Table of contents

Preface

International Conference on Design, Engineering and Computer Sciences 2018 (ICDECS 2018) held on 9th August 2018 in JS Luwansa Hotel and Convention Center, Jakarta Indonesia. ICDECS 2018 was organized and hosted by Faculty of Engineering, Faculty of Computer Science and Faculty of Art and Design Universitas Mercu Buana Jakarta.

The first ICDECS 2018 aims to provide a platform for participants an interdisciplinary research and innovations from academia and industry with related topics in the field of Engineering; Computer Science; Art and Design. The conference provides a high level national and international research for scholars, scientists, researchers, and engineers to present their results in the field of engineering, computer science and art and design. The issue covers all the aspects of engineering from mechanical, electric and electronic, civil, architect, industrial engineering as well as in the filed of computer science, art and design.

The editors hope that this issue will provide the reader a broad overview of the recent and relevant field of the above disciplines. The editors would like to express their sincere appreciations and thanks to all the committee members of the ICDECS 2018 for their excellent efforts. Thanks also to IOP Conference Series for producing the issue with full articles.

Conference Chair

Dr. Setiyo Budiyanto, MT.

List of Editorial Board, Organizing Committee and Photos are available in this PDF

All papers published in this volume of IOP Conference Series: Materials Science and Engineering have been peer reviewed through processes administered by the proceedings Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.

Malware authors often use binary packers to hinder the malicious code from reverse-engineered by malware analyst. There have been many studies done on providing different approaches on unpacking the packed binary executable. Our previous works have successfully relied on the written memory section size as an indicator to extract hidden-code during the unpacking process. This paper enhances our previous work by locating executed instruction in the written memory section to provide a more precise memory location in extracting hidden code from the packed binary executable. The result of our experiments exhibits higher similarity result for all packers and benign applications compared to our previous works.

There are currently a number of key establishment protocols that have been developed with server-based as trusted third parties. However, there are still some attacks that may occur in the protocols are man-in-the-middle attack, replay attack, typing attack, and modification attack. Following this, S-NCI's key establishment protocol has been developed which claims to be immune to man-in-the-middle attacks, replay attacks, typing attacks, and modification attacks. However, the protocol has not been through formal analysis. Then, based on experiments that have been done in this study, S-NCI has not met the formal analysis criteria of Alive and Weakaggree. In addition, S-NCI also has not provided an applicable supporting procedure for the utilization of Key Translation Center that is realized until now no one has applied. The research method used in this research is a research library supported by experimenting formal analysis of protocols using Scyther Tool. This research has produced a procedure supporting the application of S-NCI protocol along with the result of modification of the protocol so that it can fulfill Alive and Weakagree criteria.

In this study, an application of Wavelet Packet Decomposi (WPD) for modal analysis of a circular cylinder supported by two elastic cantilever beams and wires was developed. The Frequency Response Functions (FRFs) analysis was typically calculated by means of Fourier transform method that worked well with linear systems but had limitations when nonlinearities were present mainly due to their inability to examine the non-stationary data. More recently, a WPD-based technique that calculates complex, time-varying FRFs for input/output relationships has been developed. This method represents a unique fundamental advance regarding time-frequency measurement techniques, since, time-varying transfer function is computed while the direct response time-frequency decomposition on wavelets is not, which have been introduced as an alternative method to FRF calculation.

Green manufacturing is a method to minimize waste and pollution caused by manufacturing processes through the management of raw materials, energy use, production processes and health and safety issues. The implementation of Green Manufacturing can be more efficient if it is implemented simultaneously with lean manufacturing. Lean manufacturing is a principle and method that focuses on systematic identification, and elimination of non-value added activities which are involved in production and customer service. One tool that can be used for lean and green manufacturing is sustainable value strapping mapping (SVSM). SVSM covers various metrics to evaluate not only economic performance but also environmental and social sustainability. This study aims to apply the concept of lean and green manufacturing through sustainable value strapping mapping (SVSM). This study is limited to current and future SVSM. Research results show that lead time at present is 1.742.5 minutes and its energy requirement is 43,695.3 Kwh. Future state shows a 15% decrease in lead time. Improvements made are SMED on the changeover process dies.

The number of limited doctors is not proportional to the number of patients so that one doctor still works in several hospitals or clinics and handles many patients at the same time. This results in many people losing the opportunity and opportunity to get information about healthy foods that are suitable for consumption, especially for people with chronic diseases. Culinary currently in great demand by many people and business people in the field of culinary can help the community in developing and encouraging national economic growth. Application of various Indonesian recipes using Visual Basic programming language. Testing using FGD, black box, and McCall. The goal is to create and design cooking applications based on the types of chronic diseases that can be used by doctors, midwives, nutritionists and the wider community who have chronic illnesses to know what foods or foods can be consumed or for anyone who just wants to know different types of cooking for people with chronic disease. The second target of the study was to assist doctors, midwives, health inspectors and nutritionists in determining healthy foods for chronic pain and nutritional adequacy for the sick. The system will convey information about the types of chronic diseases along with diet and types of dishes or foods that may be consumed by patients with chronic diseases in which case the authors prescribe them with ingredients. With this system the wider community, doctors, midwives, health inspectors and nutritionists easily obtain the required information without having to memorize one by one cooking / food for patients with chronic illness. The level of software quality decision-making system chooses to cook based on the overall type of chronic disease in the Good criteria, with a percentage of 69.90%. The highest quality factor is based on correction factor with percentage equal to 71.73%, Maintainability factor 70.07%. Reliability factor with percentage 69% and lowest quality factor is from Usability aspect with percentage 68.80%.

The biodiesel industry is a downstream palm oil industry group that is projected to continue to grow in Indonesia. In addition to meeting national needs in order to fulfill the mandatory biodiesel acceleration program B20 in Year 2020 and B40 in Year 2050, the penetration of Indonesian palm oil biodiesel export market to the EU is more open with RED enforcement. Nevertheless, Indonesia's downstream palm oil industry including biodiesel industry is faced with various negative campaign issues as it has not achieved the value of GHG Emission saving default value of 35 percent to be called an environmentally friendly product. The purpose of this study is to identify the dominant global environmental aspects and impacts of the biodiesel production process from Indonesian palm oil and to provide improvement recommendations that encourage the reduction of greenhouse gas emissions in the transportation sector of national biodiesel products. The sustainability of palm oil biodiesel industry is evaluated using life cycle impact assessment method. The research is done by combining quantitative and qualitative approach. The field survey was conducted in oil palm plantation companies, crude palm oil producers, and biodiesel producers located in North Sumatra. Improvement recommendations for improving the sustainability of Indonesia's downstream palm oil industry, especially the biodiesel industry from crude palm oil raw materials, refers to best practices and expert discussions.

In an effort to overcome the problem on raw materials for the production process in manufacturing highly complex and must be continuously strived to maintain the quantity and quality of production results so that the costs incurred due to problems in the procurement of raw materials can be pressed. Various difficulties in the risk control system in raw materials warehouse becomes an obstacle for the company to maximize its long-term profit. This research paper presents a conceptual model for risk control of failure in raw materials warehousing, which is influenced by various factors in the form of defective materials, materials deficiencies, delays and materials error. Whereas, each factor influenced by inspection variables, loading-unloading, allocated materials, retrieval, procedures, worker skills, and facilities. Conceptual modeling is done using the qualitative phase of system dynamic (SD) methodology on the network and Failure Mode and Effect Analysis (FMEA). The level of improvement in the conceptual model is given for the continuous improvement and improvement of the system of risk control in the raw materials warehouse.

The sample selection model is a combination of the regression and probit models. The models are usually estimated by Heckman's two-step estimator. However, Heckman's two-step estimator often performs poorly. In the context of the parametric method, Monte Carlo simulations are studied. The goal is to simulate and test as early as possible so that we can anticipate the problem of the accuracy of a model. The best approach is to take advantage of the tools provided by the theory of fuzzy sets. It appears very suitable for modeling vague concepts. It is difficult to determine some of the criteria and arrive at a quantitative value. Fuzzy sets theory and its properties through the concept of fuzzy number. The fuzzy function used for solving uncertain of a parametric sample selection model. Estimates from the fuzzy are used to calculate some of equation of the sample selection model. Finally, estimates of the Mean, Root Mean Square Error (RMSE) and the other estimators can be obtained by Heckman two-step estimator through iteration from some parameters and some of values.

In the industrial environment there are various factors that result in decreasing the productivity, either from the factors themselves or from factors from outside influences. One external factors of influence the productivity of work external influences is the environmental factor is the noise of the work machine, and one factor of the self is one of the wrongly. A worker can work well if supported with a good working environment as well, where a good environment can produce maximum output. So it is necessary to create a system and a good working environment in order to obtain maximum results. Noise is one of pollution that is not desired. Because in the long term noise can interfere with the work of comfort and decrease work; noise can damage the sense of hearing and can cause communication errors. So it is necessary to do the testing at the noise level, among others, aged between 40-60 db, 61-80 db, 81-100 db. This research focuses on cabin control process in CT Packer's interviews installation is the tool that is inserted into the production well. This is done to determine the effect or relationship between age and noise on the productivity of workers, performance level the performance of operators on the cabin control process and also on the level of how the operator can do the job comfortably and optimally. After analyzing the data, the results showed that the noise level of, aged between 40-60 db bothered a comfortable and optimum workspace condition with total working time of 2186 minutes or 36.4 hours from all operators totaling 16 people working. And after conducting a correlation test, at the noise level, aged between 40-60 db has the nature of weak eyes relationship between age and noise to work productivity with positive correlation.

The effect of temperature on the calendar aging of commercially available 3.25 Ah Lithium-Ion (Li-Ion) and 2.30 Ah Nickel Metal Hydride (Ni-MH) batteries were investigated. Calendar life tests were carried out using open circuit method at -20°C, 20°C and 55°C temperatures and initial state of charge (100% SOC). It is found that the aging of the batteries increases with increasing temperature and storage time.

Davies-Meyer is one scheme among 12 compression functions found through systematic analysis by Preneel et al. to be provably secure under black-box analysis. But in the development, this scheme proved to be vulnerable to fixed-point attack. With this vulnerability, it is possible to implement one of attack in an iterated hash function that exploits fixed-point weakness named faster multicollision attack. Implementing Simeck32/64 as an underlying block cipher, the attack induced by firstly searching for fixed-point collisions. To accomplish this finding stage based on Yuval's birthday attack, a sum of 2.2^n/2 different fixed-point sequences are needed. Based on that, two sets of 2¹⁶ different inputs are generated by modifying 16 bits of least significant bits from each pair of five input samples to find a collision between them. The final result makes an outstanding fact, with 4.194.304 total collisions obtained from five samples and 16 different IV values that already produced before in fixed-point collision finding stage. These facts conclude that Davies-Meyer scheme is not resistance against faster multicollision attack because of its fixed-point weakness.

Automotive industries especially car manufacture is the highest technologies at this time. Its production is increase in several years. One of car component that produced in Indonesia is automotive glass. Automotive glass that we knew is Laminated and Temperlite. The kind of glass that can show car quantity is Laminated Glass because it used only one on the car. One of material that used for Laminated Glass is PVB Films. Forecasting become important to set production capacity. In this study we use ARIMA forecasting method by MINITAB to calculate plan of consumption PVB Films based on data of 12 months consumption result on 2017. The result show that ARIMA 0-1-1 is the best model. The quantity result is higher than other ARIMA Model that are 1-1-0 and 1-1-1.

When observing an environment of open green space on campus, the author aware of something that can be exploited and is expected to become a public space where the campus community can interact. The authors try to understand first why a space can be formed by reading the book Production of Space. Henri Lefebvre. try to describe the space and its relationship with human beings. Lefebvre sees space as something produced by each community. According to Juergen Habermas, the public sphere is the space inside there is participation and the consolidation of pluralistic public. This research uses qualitative, descriptive methods, the authors want to unravelling the data on the actual state of the activities happening in the garden. This paper proposes proved that the theory is true by observing the use of open spaces These directly on the activities of the "Campus Talk" in an environment of Mercu Buana Jakarta. "Campus Talk" is an activity talk or discussion between the leadership of the campus resource person with officials, academics and practitioners dealing with the situation and educational themes that are viral at this time. This study uses two space i.e. the production spaces of Lefebvre and public spaces of Juergen Habermas, trying to describe how the production of space and atmosphere in open green space parks Edu Park "I am UMB". The results of these observations indicate that the activities of the "Campus Talk" in open green space parks Edu Park "I am UMB" as representational spaces, can create new spaces for the existence of the occupation, although not all of these parameters must be met.

LightMAC is one of MAC algorithm based on a block cipher that use two independent keys. As a MAC algorithm, it should be able to fulfill computation resistance. MAC algorithm is vulnerable to forgery attack if that property does not hold. There are three type of forgery attacks i.e., selective, rxistential, and universal forgery attack. In this paper, we do forgery attack on LightMAC scheme and use SIMECK 32/64 lightweight block cipher as the basic construction. We use Wang et al. method's for selective forgery and Fanbou & Fengmei method's for universal forgery, whereas the method of existential forgery was determined based on observation of the structure. The attack result shows that we can get the forged message for every sample. The value of the forged messages is the same for all the type of forgery attacks. So, LightMAC is vulnerable to forgery attack.

The cover layer of the pavement can be functioned as a structural layer or non-structural layer. Improvement of road surface conditions is done by overlay with additional layers above it or stripping the surface layers of the road. Reclaimed Asphalt Pavement (RAP) or asphalt stripping results into a new problem of aggregate asphalt waste. Utilization of material from the pavement surface layer can reduce environmental pollution and can save maintenance cost. Research has been done by knowing the content of asphalt and gradation of aggregate from stripping asphalt through the extraction process. A few modified asphalts as Asbuton Retona Blend-55 (Asbuton-R) and fresh aggregates have been added to obtain the aggregate bitumen mixture on the specification type of Asphalt Concrete Wearing Coarse (ACWC) mixture. Crumb Rubber (CR) of used tire rubber has been added to the new aggregate and mixed with the old asphalt mixture, and then added asphalt modified Asbuton-R. Crumb rubber (CR) of 0.5%, 1%, 1.5% and 3% were added to each variation of asphalt content ranging from 1.5%; 2%; and 4%. The result of the recycled aggregate asphalt mixture was tested with Marshall Standard and Marshall Immersions on the optimum Asbuton-R content. The deformation resistance of pavement mixture to weather changes has been simulated using Wheel Tracking Machine (WTM) at 26° C, 30° C, 35° C. The results showed that RAP content of more than 80% can still be utilized in the recycling process. The asphalt pavement mixture resistance to rutting deformation due to temperature change, with the addition of 1.5% of optimum Asbuton-R content has shown an increase.

This article presents the nonlinear analysis of inclined Concrete-Filled Steel Tube columns (CFST) under vertical cyclic loading using the Finite Element Analysis. Fifteen analysis cases with three inclination angles were investigated. All the steel tube columns were 75x75 mm. square section with 500 mm. long. The thickness of the tube was varied as either 1.8 mm. or 3.0 mm. The infilled concrete was 23 MPa and 42 MPa. The internal contact surface between the infilled concrete and the steel tube was applied. The validation of the finite element model was made through comparison with the test results. From the analysis and the test results, the ultimate cyclic compressive strength decreases with the increase of the inclination angle. However, the decrease of the ultimate load with the inclination angle (from 0 to 9 degrees) is smaller with the presence of the infilled concrete. The buckle section is perpendicular to the inclined member axis.

Decision-making process in detecting buried bodies in clandestine grave is crucial to solve criminal cases. Generally, cadaveric derived lipid is used as 'biomarkers' for biomolecular analysis to detect a clandestine grave. However, there are a few environmental factors around the grave that could help in increasing the chance of detecting the clandestine grave. The existing framework has many factors which are inefficient in locating human cadaver. For example, risk is not implemented in the framework which may affect the percentage of locating the graves. Moreover, most of the framework is not computerized which mean it requires a lot of time to locate graves. Therefore, the proposed modified framework will contain guidelines for risk management in decision-making processes. The framework is expected to illustrate guidelines that involve computerized risk and decision-making process. The chosen method is a multi-criteria decision-making (MCDM) method which is known as the Technique for Order of Preference by Similarity to the Ideal Solution (TOPSIS) where the risks that have been identified can be analysed according to their weight of priorities. Hence, it makes the forensic investigation work more efficient and helps to reduce human errors. This research demonstrates that the inclusion of risk as a fundamental component of DSS is able to improve accuracy and efficiency in the decision-making process.

The Internet is the communication path used in data exchange. Nevertheless, the delivery process is often experienced disturbance caused by outsiders who are not interested. In addressing the security disorder and abuse, then used cryptographic techniques. This research method using Hybrid cryptography with the aim to cover each other's weaknesses between symmetric and asymmetric cryptographic algorithms. The algorithms used in this research is a symmetric algorithm Triple DES (Data Encryption Standard) and ElGamal asymmetric algorithms. Triple DES is the development of the algorithm DES. Triple DES needs three keys with the length of each 56 bits to perform encryption and decryption. Messages to be encrypted is a message that has the extension *.txt. ElGamal algorithm requires the public key, and private key, as well as the ElGamal algorithm, will also perform the encryption against key Triple DES. The public key used during encryption and private keys used during the process of decryption key Triple DES. As for the results of this research is the larger the size of the message then the longer time it takes to perform the Triple DES algorithm encryption and decryption. Time needed encryption algorithm Triple DES and ElGamal for longer than the time it takes to do the decryption. After the encryption process, the number of characters in the ElGamal algorithm becomes larger.

PT IKPP is a manufacturing company engaged in the field of integrated pulp and paper industry with foreign investment status (PMA). Based on data obtained from September 2016 until February 2017 PT. IKPP has quality related issues on Jumbo Roll products. The product during September 2016 until February 2017, it was found defect of 1,162 (27%) of the total production of 4,346 (100%). The types of defects that occur in Jumbo Roll products are Thickness, Tensile Strength, Smoothness, Cobb Value, Porosity, Base Weight, Water Resistance, and so forth. Based on the results of analysis performed using pareto chart found 9 defects, then 3 of 9 defects with the total cumulative percentage is in the number 80%, which is the thickness of 51.89%, Tensile Strength of 25.90%, and Smoothness of 14.29%, so the main improvement focused on all three types of defects. Based on analysis of FTA method (Fault Tree Analyze) found cause of problem of defect Thickness, Tensile Strength, and Smoothness, that is influenced by some factor that is man, machine, and material. The proposed improvements that can be made for improvements in Thickness, Tensile Strength, and Smoothness are based on the largest RPN (Risk Priority Number) from the analysis of FMEA (Failure Mode and Effect Analysis) is the improvement of Thickness by performing regular maintenance on the refiner parts such as knives and refiner motor, Tensile Strength repair by setting for pulp composition (NBKP) in accordance with standard pulp composition (NBKP) on each type of paper, and improving Smoothness by setting the amperes on the refiner to match the ampere that has been set in accordance with the standard ampere on the type of paper.

In this paper, numerical simulation of distortion and phase transformation in laser welding process is carried out. A coupled thermal-structural and metallurgical model of laser welding process is simulated by using FEA engineering software MSC Marc/Mentat. The specimen model is simulated in the form of butt joint plate with dimension 50 mm in length and 25 mm in width with 2 mm thickness and using material low carbon steel (C15). Conical heat source model implemented in this simulation due to existing Goldak's double ellipsoid commonly used for arc welding process. Phase transformation is predicted based on Seyyfarth-Kassatkin Model and implemented in user subroutine PLOTV which is written in FORTRAN programming language. Presented results of laser welding simulation included temperature distribution, phase transformation, and estimated welding distortion.

PT. Z is a company that focus on steel industry in Indonesia. This company produces steel plates and coil. Relining roll is one kind of spare parts. The function is to reduce thickness of steel. Relining roll used in almost of machines in cold rolling mill. However, there is a problem in supply of spare parts called overstock in January-December 2017. The effect of overstock is high cost on holding inventory. The result of ABC analysis, there are seven spare parts with A category which are four spare parts with slow moving demand, two spare parts with erratic demand, and one spare parts with lumpy demand. Spare parts with slow and erratic demand use periodic review (R,s,Q) policy and spare parts with lumpy demand use periodic review (R,S) policy. The result of calculation of using periodic review in proposed condition is 99,98%. And the result of calculation of total cost inventory using periodic review (R,s,Q) and periodic review (R,S) is Rp 3.019.768 or 90,31% lower than actual condition.

Batik Kelowong Machine is an innovation in batik processing that has been invented by Agus Martoyo in 2010 and currently used at Adelia Workshop, Bekasi. Differs from other tools that still relied on artisans' craftsmanship, this machine worked full-automatically by integrating Computer Aided Manufacturing system and adopting CNC (Computer Numeric System) technology, formerly used in metal and wood engraving, into the process of 'writing the outline' or 'klowongan' in batik. This research aims to study the linkages between machine's capabilities with the characters of design elements such as dots, lines, and shapes. Focus of this research is to identify the design element's characters that were produced by computerized-batik technique, conducted by studying patterns in Adelia Workshop using qualitative-descriptive methods. It is concluded that the digitalization and mechanization in Adelia Batik have not only affects the line of process, but also batik designs. By using vector-based software in design stage, designer can experiment with various techniques digitally, such as repetition and mirroring, thus affecting batik's design. Using the machine also enhances precision, neatness, and exactness of the patterns. The workshop does not have to rely on pattern and klowongan makers, thus cut off some expenses and time. In other hand, since it can only be used in the making of main outline, not for isenisen (detail of an ornament) or tembokan (blocking the patterns with malam), batik artisans still be needed to complete the projects.

This research aims to analyze the quality of water in the industrial and residential areas. This research was conducted for two months. The parameters analyzed in this research are pH, TDS (Total Dissolved Solid), EC (Electrical Conductivity), and water temperature, using pH meter and TDS meter. The average results for industrial area (Bekasi) are pH 7.31, TDS 138.14 ppm, EC 205.63 μs, and temperature at 29.38° C. Meanwhile, the results for residential area (Depok) are pH 8.04, TDS 115.50 ppm, EC 190.40 μs, and temperature at 28.61°C. From these data, it can be concluded that water in these two regions can be consumed, compared with the quality standard in Regulation of Minister of Health No. 32, 2017.

The importance of data quality might have a major impact on the company's existing business processes. But there are still many companies that yet to understand the importance of data quality. Many cases that often occurs to the quality of data in many companies in Indonesia is that the inputted data are not filtered, so there are issues about not standardized data pattern. This case can be handled with data preprocess in which one of the methods are data profiling. Data profiling is a proses of collecting an information of a data. In this research the main focus of the analysis by conductin data profiling using data pattern method and algorithm that adopting from OpenRefine and then modified. The results of the profiling using open source tools Pentaho Data Integration, Google OpenRefine and Data Cleaner are really difference, while Pentaho Data Integration and Google OpenRefine found exactly 70 data patterns, Data Cleaner only find 31 data patterns.

Rainfall-runoff model or rainfall runoff model is used as a tool to describe hydrological processes. The runoff flow of rain is part of the rain that flows above the soil during rain and shortly thereafter that will gather in the lake or river and eventually flow into the sea. Because rainfall runoff is what will affect the flow of the river it flows. The discharge of river water is the water level of the river that is measured by the river surface measuring instrument. The purpose of this research is to compare the calculation of F.J Mock model and Nreca model using IHACRES software. Calculation begins by searching for average rainfall by arithmetic method, then calculating evapotranspiration using Penman method, followed by calculation of F.J.Mock method, Nreca method, and value input in IHACRES software. The results of the reliable debit calculations yield R² for the F.J.Mock method of 0.9417, for the Nreca R² method of 0.5152, and for the IHACRES R² software of 0.562. From the calculation results obtained F.J.Mock method most closely R2 = 1. To calculate the reliable debit in the Ciujung-Sabagi River can use the method F.J.Mock.

Magazine is an information source that is part of media industry. Other than the source of information, magazine is also acts as an entertainment source for its readers. One of the impacts of the technological development is the transition from printed magazine to digital magazine. The development of technology creates a revolution in publishing industry, for instance this occurrence changes the consumption habit and the usage of printed publication, which has fully matured today. Therefore, this transition causes changed that impacts its readers, some of the example are from the function and the visual point of view. In this work, we focuses our observation of such a transition from the visual point a view on a magazine. A study case that is used in this work is from Femina magazine, that the women magazines have the longest history in Indonesia. A qualitative method that describes the transition from visual point of view that occurs on both printed and digital version of the Femina magazine is used in this work. Such a technological transition influences the function of the magazine with respect to its readers – Indonesian women.

The purpose of this research is to identify the Shape Memory Alloy (SMA) parameters necessary for SMA actuators analysis using SMA constitutive models. The behavior of a material is primarily a function of three variables: stress, strain and temperature, and their associated rates. These variables are interdependent, and the material behavior is a non-linear function of these variables. A number of constitutive models for shape memory alloys have been proposed and found to be relatively convenient to use in predicting and describing shape memory alloys' behaviors quantitatively. However, the application of these models in designing and analyzing an actuator requires the determination of the thermomechanical properties of these materials such as transformation temperatures, thermoelastic tensor, Young's modulus, Transformation tensor) and recovery strain. This research has been conducted to identify the thermomechanical properties of a commercial NiTi SMA wire. The paper shows in details how these parameters can be identified.

This paper describes the development of heart rate and oxygen saturation (SpO₂) monitoring system using Thingsboard Internet of Things (IoT) platform. This research is part of development of IoT application for supporting mother and child health program in Indonesia. This IoT-based real time monitoring system enables preventive care and promotes automation to reduce the risk of human error. Measurement of heart rate and SpO₂ is done by pulse oximetry method using sensor module and Raspberry Pi. The Arduino-based sensor module collects, calculates and sends heart rate and SpO₂ data to Raspberry Pi for further analysis based on normal value reference table to detect abnormalities. Further heart rate, SpO₂ and its abnormality status are delivered to Thingsboard using MQTT (Message Queuing Telemetry Transport) protocol. The results show that the system is functioned as expected. Heart rate value (in beat per minute) and SpO₂ value (in percent) are presented while Photoplethysmogram signal (PPG) is presented as graphic on Thingsboard dashboard. The abnormalities status such as tachycardia, bradycardia and hypoxsemia are also featured on the dashboard. We also calculate uncertainty measurement of heart rate and SpO₂ by the sensor module which are ±2.85 bpm and ±0.28%.

The University is an educational institution that provides space and venues for cognitive and social activities and developments for students. Currently, the learning process for students can still take place in informal spaces, such as in lecture halls or in public spaces within the campus. Students can be free to study independently or in groups in various places and facilities that support it based on its choice in public spaces in the campus. In these places of education, they provide educational support facilities such as libraries, cafeterias, corridors, terraces and sitting rooms equipped with student support systems for informal learning. However, phenomena require a change in the form of a learning physical environment, which can accommodate more relaxed informal learning activities that have wider space dimensions. This study aims to explore the preferences or choices of students in the informal learning space in the campus public space. The results of this study were to obtain characteristics from the informal learning room on campus, the choice of students in choosing where to study, and the behavior of the student activities in the existing informal study. This research product is expected to be used and utilized in designing informal study room in campus public space in the future.

This research compared the use of Double Skin Façade (DSF) with its combination with 3 types of solar chimney; vertical solar chimney, slopped solar chimney, and horizontal-vertical solar chimneys on a eight-storey prototype office building in Jakarta, Indonesia. All simulations were performed by simulation using Ansys 15.0. The results are based on the air velocity and pressure flowing in the DSF gap and chimney, as well as the room. From three types of solar chimney simulations which used, it shows that the best result is DSF combination with vertical solar chimney utilization of DSF combined with solar chimney proved effective in increasing wind velocity in space.

With more challenges in competition worldwide, manufacturing industry needs more active to provide high levels of performance and commitment. To win the competition through more customer satisfaction, manufacturing companies have to opted not only high skill human resources, latest technologies but also have the reliable and modern manufacturing optimization strategy. Lean manufacturing tools have been widely used by manufacturing companies to achieve these objectives. Many researchers have researched and explained the application of these different LM tools in industry that are mostly located in developed countries, very few have examined the application of these tools in developing countries (such as Indonesia). This paper aims to evaluate LM tools implementation and their impact on manufacturing performance in the Indonesian manufacturing companies. 50 questionnaires have been taken from 15 companies, only 32 were responded and only 30 items were suitable to be processed. Data processing was performed with Smart-PLS 3.0 program. All of 8 tools/indicators was found valid and reliable to represent LM tools and have a Positive and Moderate relationship with manufacturing performance (MP) with R² = 40.6% means variability of MP 40.6% could be explained by 8 LM tools and the rest by others factors.

Alm's Giving(Zakat) is one from ve obligations of muslim. Many muslim known that regulated as well, especially for ZAkat Fitrah and ZAkat Maal. This ritual usally performed in approaching moment Idul Fitri. For many years, there are was always prob lems on those season.To overcome the problem, the use of Information system could be considered as solution, it makes ZAkat handout and distribution become organized and transparent. This paper studied the Implementation Information System of ZAkat with exible component. The combination of the technology Struts 2 Framework and hibernate was implemented to the system. This system is provided with the advantages of Struts2 MVC characterized to expansibility and maintainability.

Injection Molding Machine Type JT220RAD is one of the machines used in the production process of fuel pump module variant 860L Gasoline, 800L Gasoline and D87A Set Plate in PT ANI. The machine is having problems with too much setup time in 99.93 minutes per variant turnover. Therefore, this study was made to reduce the setup time of injection molding machine type JT220RAD by 35%. The researchers applied the SMED (Single Minute Exchange of Die) method with 5 steps, identifying setup activities and measuring setup time, separating internal and external setup activities, converting internal setup to external, performing kaizen with streamlining setup process, evaluating kaizen done. The result of this SMED implementation is decrease setup time 37.66% (38 minutes per variant turnover) and increase productivity 3.17%.

This paper is talking about comparison between Hollow Aluminum Yagi-Uda Antenna and Dipole Antenna quality based on position of the antenna using CST Microwave studio simulation which the element of Dipole antenna has a same size with the driven element of Yagi-Uda Antenna. In this research, each antenna is placed in four different places which representate high place, low place, indoor, and outdoor. While the simulation result of antenna using CST Microwave studio will be analyzed based on some characteristics of antenna that is Return Loss, VSWR, Gain, and Directivity. In the end, both results will be compared and analyzed to get a recommendation for the best type of antenna which can fit with the provision of the frequency, condition, and parameter that specified before.

PT. X is a manufacturing industry that produces household appliances especially electronic appliances. The appliances are Magic Com, Fan, Iron, Blender, Dispenser, etc. The product of this research is KAD-927 B fan, with the diameter size of 9 inches. The research took several parts, namely Front & Back Grille iron material that will be redesigned with plastic material. The method used in this study is Nigel Cross design principles, with sequential process stages: clarification of purpose, function setting, requirements setting, characteristic determination (QFD), morphological chart, alternative evaluation (AHP), and communication / improvisation . This research is also assisted with the help of CAD Autodesk Inventor and Auto Cad. The result of the design of Front & Back Grille is based on the customer needs (Engineering Staff). Specifications obtained from this research are as follows: additional function with handle, hook mounting process, spider web shape, Front & Back Grille color is white with PP (Polypropylene) material, light in weight, and with safe design so that fingers cannot get into the webs.

The enhancement of road safety is a major concern to societies due to the losses in human lives and the economic and social costs. Tremendous efforts have been dedicated by transportation researchers and practitioners to improve road safety. This paper will purpose developing new speed limiter integrated with fatigue control to improve the safety for vehicle, and also to analyse if there is an accident. The device develops and then integrated into one system fatigue control by SLIFA sleepiness scale. The testing held to prove the fatigue control base on sleepiness scale 1-9 parameter driver fatigue, and it show the system can work well and speed slow down if 6-9 scale. The next improvement for this system can be develop the server to collect data scale sleepiness scale from internet, so the driver and the vehicle owner can monitor the also the driver fatigue condition.

Ngalaksa is a traditional ceremony in Baduy Tribe, Indonesia. The ceremony serves as a substitute for the population census. This paper uses qualitative analysis methods with anthropological approaches, especially ethnography and Feldman art criticism (descriptive-formal-symbolic analysis). This study aims to identify the various forms of teke at traditional ceremony Ngalaksa in Baduy Tribe. There are four types of teke are categorized by sex and age of a person, including 1) Teke made of kiray leaf that is destined for residents of Baduy Tribe. 2) Teke goler made of kiray leaf that is intended for the residents of Baduy Tribe Outdoor. 3) Teke kanteh made of rolls of yarn and carpets (bamboo to roll the yarn) which is destined for infants in the womb of 1-6 months. 4) Teke strands made of rolls of yarn and carpets that are destined for babies within 7 months of age. In the future, this research is expected to be a reference to examine the symbols of various forms of teke to understand ethnic behavioral patterns and customs, as part of customary and cultural wealth in Indonesia.

This paper discusses the search for problem-solving product defects herbal sachets powder that occurs in the herb filling machine, using Six Sigma method with the concept of DMAIC (define, measure, Analyze, improve and control). In this study, 15% defects are found, the magnitude of this defect becomes one of the causes of the loss of production costs due to defects caused to the herbal sachets cannot be repaired or reused. Therefore, this paper will try to reduce the defects of these products using the stages of DMAIC repair. The quality tools used to solve this problem is by using Pareto, FTA (Fault Tree Analysis) and 5W + 1H. Ultimately, this study was able to provide quality improvement results by calculating the sigma level of defects of the herbal sachet product powder. The results of the improvement are: reduced sachets defect less than 2% with an increase in the sigma level value from 3.25 to 4.375. The use of this six sigma method is the right method and able to find problems, find solutions and be able to improve the quality.

Batik is cultural expression that contains symbolic meaning of philosophy and high aesthetic value for Indonesian people. The unique method makes Batik represent Indonesian unique character. As its application expanding, unfortunately, modernization has brought incorrect interpretation about history existence of Batik design and application, it leads to a major problem in philosophy meaning and design innovation of modern Batik. Most of previous researcher only focus to preserve the method in producing Batik. Focusing in Batik motif and pattern design is also required a focus. By formulating a good structural connection from the philosophy of an object and its symbolic meaning, this paper proposed new method on designing Batik motif and pattern to create a new Batik pattern which suitable for modern design application. This paper offering four design stage and steps on designing a modern batik motif, which applied philosophy, contemporary style and basic design principle approach to be able to set into a promotion poster for International Java Jazz Festival as an example design application. These proposed methods are improving the idea exploration of Batik motif design and prevent breaking the philosophy rules (pakem) of Indonesian traditional batik. New improvement on designing a new modern Batik motif design are set to applied on innovative product which contain a good philosophy in order to create a strong and consistent message to the target market. Therefore, it can brought Batik to the various application, modernization and international market with the high appreciation to Indonesian traditional culture.

Cipancuh reservoir is the only one reservoir for irrigation in Cipancuh. Volume of Cipancuh reservoir is depending on the rain fall. In previous research, mentioned that the potential of Cikandung river water source, can increase the volume of Cipancuh reservoir so as to irrigate the rain-fed rice fields around it. But in fact, the Cipancuh reservoir water release arrangement is still very manual, depending on weather and conditions. So, in this research proposed a new rule for operational Cipancuh reservoir. This rule is expected for optimum water using and can be accounted, so as water reservoir release can meet the demand according to its target. Reservoir operation is made by fuzzy logic method. This method is built on fuzzy logic which is a way to map an input space into the output space. Between input and output there is one black box that must map the input to the appropriate output. In the calculation use Sugeno's fuzzy inference system method. The results show that the release by Sugeno's fuzzy inference system method is almost the same as the required release of water in the field. The results of this research is expected to give contribution either be a new method in the optimization of reservoir operational.

The aim of this study is to determine the difference in the quality of groundwater at an industrial location in MM2100 and a residential location, both in Cibuntu, West Java, Indonesia. The parameters used to establish whether or not the water is safe are: standard acidity of the water (pH), total dissolved solid (TDS), and Electrical Conductivity (EC). The results of water tested in MM2100 revealed an average of pH 7-9.7 for acidity, 127.8ppt for total dissolved solid, and 258.5 μS for EC. The results of water tested from the residential location recorded an average of pH 8.0-10 for acidity, 89.4ppt for total dissolved solid, and 179.9 μS for EC. The quality of groundwater for both the industrial and residential locations have been found to be unsafe based on governmental and international standards.

In this study, the ISE-NH₄⁺ sensor based on hybrid membrane of the poly (vinyl chloride)/methyl methacrylate-butyl acrylate 2:8 co-polymer (PVC/MB28) has been successfully developed, where the ratio between PVC: MB28 is 9:1. Meanwhile, the plasticized material used is dioctyl sebacate (DOS) of 66.34 wt. %, the amount of lipophilic salt of the potassium tetrakis (4-chlorophenyl) borate (KTpClPB) used is 0.99 wt. %, and nonactine as much as 2.97 wt.%. The addition of the MB28 co-polymer has successfully improved the performance and mechanical strength of ISE-NH4+ especially at measurements at 40°C. The ISE-NH₄⁺ sensor based on PVC/MB28 has a Nernstian number of 55.4 and 58.7 mV/dec for measurement at 25°C and 40°C with the linear range between 0.1 - 10⁻⁵ M. While the ISE-NH4+ sensors based on PVC used as benchmarking have Nernstian numbers of 54.2 and 35.3 mV/dec for measurements at 25 ° C and 40 ° C, where the linear range is 0.1 - 10⁻⁵ M and 0.1 - 10⁻³ M. The addition of MB28 also does not cause the selectivity of the ISE-NH₄⁺ sensor to decrease, where the result of the selectivity between PVC/MB28 is comparable to PVC.

Hyacinth plant is a destructive plant because the plant has the potential to make the swamps or rivers become shallow and damaging scenery. Though hyacinth plants can be exploited as a substitute for portland cement filler on road pavement Aspalt Concrete – Wearing Course mixture. This research is to know the optimum asphalt content and how much effect to the addition of ash hyacinth to Marshall result. The test specimens in this research were made with variation of 5%, 6% and 6.5% asphalt content and using five filler variations namely portland cement, as ash hyacinth, 50% hyacinth with 50% portland cement filler, 75% water hyacinth with 25% portland cement filler, and 25% hyacinth water mixture with 75% portland cement filler. From the results on Aspalt Concrete – Wearing Course mixture with the variation of bitumen content and filler variation done in the laboratory of Mercu Buana University, it is found that the optimum asphalt content of portland cement is 6.1%, the optimum asphalt content of ash hyacinth is 5.75%, 50% hyacinth with 50% portland cement filler is 6.1%, 75% water hyacinth with 25% portland cement filler is 6.0%, and a 25% ash hyacinth mixture with 75% portland cement filler is 6.0%.

This study aims to determine the quality of industrial groundwater in Bekasi Regency and groundwater residential in the City of Bekasi. Groundwater quality was analyzed based on measurements of pH water samples, Total Disolved Solids (TDS), Temperature (T), and Electrical Conductivity (EC) using routine water sampling method every day for two months and measurement using multimeter. Average results from residential groundwater sample measurements: pH 8.22, TDS 44.6 ppm, T 30.7 ° C, EC 86.7 μs. Average yields from industrial groundwater sample measurements: pH 8.26, TDS 128.7 ppm, T 31.2 ° C, EC 262.1 μs. Based on the above data can be concluded that the quality of water in the residential and in industrial Zone is still feasible to be consumed, but not feasible to drink. This refers to the Regulation of the Minister of Health of the Republic of Indonesia No. 32 Year 2017. Differences in water quality The industrial estate is affected by industrial activities and infrastructure. While in the residential influenced household waste.

facilities is less than the number of people who need the services. This phenomenon is the result of customer arrival and service time are not balanced. In this case, we use queuing modeling to assist management in determining the optimal number of supermarket's cashiers at Saga swalayan Padang Pariaman. The problem to be reduced are at the crowded time and at the deserted time during office hour of the supermarket to provide optimal performance in service. In this research, we used multiple lines queuing system (M/M/S) for analyzing. The calculation was done manually and using the software "Quantitative for Windows" with waiting lines module. The result of the research revealed that the performances of the existing queuing system was not optimal due to the usage of the payment facility and the cashier skill are still low.

The features texture in the textured images could be extracted by using grey level co-occurence matrix (GLCM). GLCM was a such kind of good descriptor for textured images, which has two variables in observation window such as angle and distance of pixels. This research observed the results of features texture for four different observation angle in the window of GLCM such as 0°, 45°, 90° and 135°. The object in this reserach was the textured image of macroscopic jati wood (Tectona grandy), a such kind of good wood from Indonesian forest. The extracted texture features were contrast, correlation, energy and homogeneity. The results showed that contrast had a biggest value in direction of 45°, the other features correlation, energy and homogeneity had the biggest value both in direction of 0°.

Currently, the volume of waste is organic waste continues to increase. This prompted researchers to study, locate and identify cheaper and environmentally friendly waste treatment alternatives. One alternative is to cultivate Black Soldier Fly (BSF). BSF egg (Hermetia illucens) used with the right solution to decompose organic waste well, produce fertilizer and can be used as animal feed. This research aims to know how optimal amount as medium grow to egg weight and to know the optimal percentage of tofu dregs weight of maggot herbs. The analysis in this study used one way ANOVA and LSD test with a 95% confidence level. This research uses 5 observations with different percentage of tofu dregs. The results showed that the best percentage of tofu dregs in the form of wet weight and weight on medium 2, which use the medium of tofu and 2.4 kg of fish meal flour 200 gram. While the LSD test results show there is an average amount of egg weight with different treatment, and average weight average with different treatment. Treatment 5 uses the least knowing dregs media ie 0.6 kg and 200-gram fish meal.

In Computational Fluid Dynamics, fluid-fluid interaction is used to model the behaviour of two different fluids as a mixture. The numerical simulations of fluid-fluid interaction were carried out by using Smoothed Particle Hydrodynamics (SPH) method based on Navier-Stokes equation in FORTRAN programming language. Correct assumptions and other suitable conditions are needed to reach best fluid-fluid interaction simulation. The term of viscosity force equation was written to model the multiple-fluid interactions. This research uses two different fluids in density and viscosity within a three-dimensional cube container. In order to get a pure interaction of fluids, other effects and influences like chemical reaction and heat transfer are neglected. The fluids are miscible with each other. The fluid particle collisions to container are regarded as perfectly elastic collisions. The simulations of two different fluids in this research showed different particle movements in each numerical simulation, but similar to its actual behaviour.

Production line is a set of sequential operation that support refinery process product from raw material to end process into finish product. However, due to the operations have different time process to finish an item/part, it caused unbalance processing time in certain work station in a production line. This problem increases overtime to work station with heavy load tasks, in the contrary to work station with low load tasks results idle workers. Overtime is definitely cost to organization. PT. Metindo Era Sakti has overtime as their issue. To balance the process time in work stations, line balancing method is one of option to the problem. Line Balancing uses to reduce overtime by increasing production line efficiency, reducing delay time, and decreasing worker idle time [8]. By using Rank Positioned Weight (RPW) and Largest Candidate Rules (LCR) and comparing those methods was proven that production line efficiency increased by 85,63%, delay time decreased by 14,37%, and reduced idle time by 3,77 minutes. Therefore, while reducing overtime, PT. Metindo Era Sakti enable to minimize overtime cost by Rp. 4.092.000 each year.

As a company that does the production process based on orders from customers, the timeliness of completion of the product and the quality of the product is important. Companies were given a period of time to complete the order. So that the company can complete orders on time, the company must have good production planning. For scheduling was done by the method of analysis of network / PERT and SMED method. The study of literature and data collection either through observation, interviews and the collection of documentation do. Data processing is done is identify the critical path with network analysis techniques / methods PERT by collecting data while optimistic, pessimistic and then with accelerating network machine set-up time with SMED method then obtained acceleration time from 10:58 hours to 8 hours set-up compacting machine so that the time that they got 2.6 hours wane. Thus the method SMED obtain optimum results even though they can be accelerated by other methods.

A fluctuate working demands of nurses encourage the occurrence of burnout and musculoskeletal problems. This study aims to identify and to analyze the occurrence of burnout syndrome in nursing work systems in hospitals. Variables of this study consist of work factors related to work demands and work stimuli (motivation) which can minimize the burnout's level, and musculoskeletal problems. The variables of work factors related to work demands and work stimuli are assessed through Work Characteristic Survey, while the variable of musculoskeletal problems is assessed through Nordic Musculoskeletal Symptom survey. This study involved 100 nurses in three public hospitals in Banda Aceh, Indonesia, which were RSUDZA (Rumah Sakit Umum Daerah Zainoel Abidin or Regional Public Hospital of Zainoel Abidin), BLUD-RSIA (Balai Layanan Umum Daerah - Rumah Sakit Ibu dan Anak or Regional Public Health Services - Mother and Child Hospital), and RSUD Meuraxa (Rumah Sakit Umum Daerah Meuraxa or Regional Public Hospital of Meuraxa). Data obtained from the survey was analyzed by using Statistical Package for the Social Science (SPSS) and provided three results which were (1) eight dominant factors of work demands and twelve dominant factors of work stimuli in nursing work systems which need to be managed to minimize the occurrence of burnout syndrome and (2) musculoskeletal problems occurred within twelve months of working period, particularly in wrists/hand, lower back, elbows, ankles/feet, and knees. Moreover, the dominant factors are mapped by using fishbone diagram to provide cause and effect relationships between burnout and the work related factors.

The use of materials as the main component and the amount of clearance used affects the performance of punch cutting and die cutting components and also the product of it. The small clearance applied will produce a good product with a very small burr but the application of small clearance very quickly cause wear on the components used. The analysis has been performed to improve the performance of progressive dies metal stamping Yoke A plate components and its product qualityby identifying the mechanical properties of the material of the components, where the material used is SKD 11 and increasing the hardness of punch and die cuttingcomponents through heat treatment process (full hardening), quenching until reheat with tempering process, and calculating of clearance quantity used in the die set. The results of the experiments obtained hardness of 62 HRC can optimize the performance of progressive die component where punch component in one application reach 94.100 stroke and die cutting can reach 110.000 stroke. The calculation results obtained a value of 10% clearance can extend the life of the wear and also reduce the burr to 0.01 mm.

Thermal comfort at house is very influential in the comfort of the occupants of the residence. Moreover, people living in tropical areas such as Indonesia country. At the present time many factors causing temperature changes of convenience, one of which is on the building materials used. Purpose of this study is to determine which factor most affects the comfort of the room temperature in the house. This study uses quantitative methods with the processing of temperature values were analyzed using a chart with a lot of surface measurement points roof, walls, windows, floors, and the room temperature. The results of this study are the factors that most influence on the temperature of the room is located on the sun's heat flow factor horizontal (outer wall, the inner wall, and window).

Currently, the Government of Indonesia is promoting the activities of the community movement about clean and healthy life, one of the Ministry of Health programs that are Clean and Healthy Behavior (Lifestyle). Benefits of the program are learning to habituate behavior that includes the cleanliness of the environment around us, such as homes, schools, food and beverage sanitation that aims to avoid infectious diseases, such as diarrhea, types, cough, skin diseases, etc. Obviously, this will be effective if applied too early childhood, but the constraints are sometimes less optimal delivery. This is usually due to several things namely, lack of understanding, the form or manner of delivery is not appropriate, the use of language that is less appropriate, the media used less interesting. With the method of simplifying the program in a picture book that accompanied interactive activities that are easy to be done by the child, so the delivery of the message more interesting and easier to understand. After doing the design test for the students of PAUD KAYYIS kindergarten school, Ciledug Tangerang on May 15-16, 2018, and the result all enthusiastic respondents read the story and the spirit of doing the exercises correctly and understand the information submitted. In conclusion, the delivery of the Clean and Healthy Lifestyle program is easily accepted and understood if it is delivered in a picture storybook accompanied by interactive activities that are easy to work on by children.

To produce optimal production, it is necessary to adjust the placement of labor quantity, work line arrangement, facility layout and machine position, but to get accurate results as the initial calculation before production, it is necessary to schedule the right target with correct calculation, so there is no mistake in production, based on the results of previous research, the cause of cessation of production due to no production support materials, traffic jam between work stations, delay of order, and delay of delivery of goods. One of the factors that is quite influential in productivity is the production line and how many work stations. The efficiency of the production line between several related work stations is very influential in supporting the continuity of the company's production. This paper aims to analyze the cause of the delay in Line assembling so that the flow of raw materials and intermediate goods between work stations is better by using line balancing method. Delay, shortage of workers and the effectiveness of materials can be overcome. Based on the problems found in the assembling development section, it is known that there is congestion in the production process can be seen in station F because the cycle time is 6 minutes so the station G must wait for 4 minutes after the work. After the improvement cycle time reduced to 1554 seconds from the previous 1580 seconds, efficiency from 93.38% to 98.87%, with the method of line balancing obtained increased productivity and production efficiency.

Increased owners of vehicles, especially motorcycles are also directly proportional to the increasing needs for maintenance. However, users of motorcycles are not so concerned about the damage to spare parts if not done regular maintenance of the motorcycle. The owners are often ignorant of maintenance on the basic of how far within kilometers has been used. This is because there are no reminders or indicators that provide information that the motocycles has entered maintenance time. One way to overcome this, we designed a system of intelligent maintenance of periodic maintenance on a motorcycle based on the distance of mobile android based. This system brings the arduino module to read the rotary encoder sensor as the distance counter. The data obtained will be sent using GSM module to the server for further processed as a reference in providing a notification to the owner. Based on GPS, SAM also has information about the existence of the nearest workshop and queue information on the workshop. Applications built have functioned by the planning, can provide a warning when the distance has reached. Also, with the web, the application has also been able to show the location of the nearest workshop and queue conditions in the workshop.

The calculation of catfish seeds is done conventionally, by sorting the size of seed catfish using a tub hollow then manually calculate the number of seeds. Because the development of catfish is often not the same, in which some fish seeds grow faster than others, so the farmers have to sort the fish seed according to its size. On the other hand, if the size of the fish is relatively the same, sorting fish is done to avoid the possibility of large fish eats smaller fish. With these problems, a tool is developed to sort the fish seed by size. Sorting technique is done mechanically using a hole line trajectory with small, medium and large size. The prototype is made using hole sizes with diameters of 6, 8 and 10 mm. After sorted by the size, calculation is done on each size group by utilizing an electronic circuit using photodiode sensor. The calculations were performed using Arduino Uno based on information from the photodiode sensor, and the results are displayed on the LCD. To make it easier to see the results of the calculation then the calculation results are also shown on the smartphone. By using the ESP8266 Wi-Fi module, the calculated data is sent to the server to be read using application on the smartphone. Test results showed that the process of sorting the seeds of fish based on the size went accordingly and the seeds are classified according to size. Moreover, the test of electronic calculation yielding the percentage of small fish seed count error 0%, medium 1%, and big 0,64%, so that the average error is 0,56%.

The simulation is based on the experimental results obtained from German Aerospace Center (DLR) using a non-premixed swirling flow gas turbine combustor. The simulation case allows for the understanding of CFD's capabilities in modeling combustion for pre-mixed flows and adds the complexity of modeling mixing and combustion for un-mixed streams. The case is simulated in steady-state condition, with typical boundary conditions being applied. For turbulence modeling, the Reynolds Stress Model (RSM) approaches are being utilized here to study the flow and combustion processes occurring inside a combustion chamber where lean methane-air streams are burnt. For chemical kinetics calculations, the Probability Density Function (PDF) transport model and Eddy Dissipation Model (EDM) using a single-step reaction are considered. The simulation results are compared and evaluated qualitatively with the experimental data,including velocity field and temperature profile.The results of swirl flow combustor show that the adopted numerical model reproduced the trends of axial, radial and tangential velocity profiles, especially near the centerline. However, the model failed to predict the temperature and species mass fraction profiles.

Damage to lifeline system installed in a healthcare unit due to an earthquake will interrupt the medical operation. This study aims to assess the hospital resilience to the interruptions. A questionnaire was used as a tool to collect data from 362 persons working in the hospital. The data were analysed using descriptive statistics showing frequency, percentage, mean, and standard deviation. For the assessed lifeline systems, the electrical system is the most important lifeline system which will cause the operation suspension when disrupted. The estimated operable hour after the disruption of the systems was between 4.51-11.13 hrs. The information from this study can be used as a guideline for lifeline system management and readiness preparation to provide continuous medical services.

The PQ-WHO Certification (Pra Qualification) is a standard covers requirements of product quality, processes, systems, safety, and health services in pharmaceutical industries related to HIV disease, reproductive disorders and acute diarrhea of children. The PQ-WHO released by the World Health Organization. A Pharmaceutical company that meet the WHO PQ requirements deserves to apply for getting approval, certification and recognition in the production of drugs. This paper described how to overcame the gap between the ideal conditions according to PQ-WHO requirements and the actual implementation. Action plan carried out to met PQ-WHO requirements by the scheduling of job method. The results of research in a pharmaceutical industry in Bekasi showed that the improvement to met PQ-WHO requirements fulfillment mostly effective done by method of Shortest Process Time (SPT) compared to other method. It resulted the shortest average time of work completion, highest utilization rate, and lowest delay. Mean flow time about 70.09 days (90 days available), average delay about 14.57 days, and tardy jobs by 7 times, and utilization about 11.96%. This result is best compared to other methods.

PT. TMI is a company engaged in the field of automotive that has implemented Total Productive Maintenance to improve efficiency and effectiveness of manufacturing companies as a whole. But it turns out that targets that are not achieved still often occur due to engine trouble. This study aims to determine the maintenance system of Press 2A machine that has a high rate of decline in speed. This study begins by measuring the achievement of Overall Equipment Effectiveness (OEE) value by first calculating the Availability, Performance Rate and Rate of Quality, then identifying the Six Big Losses that occur. The results showed that the average value of OEE on 2A Stamping machine is 70%, the effectiveness value is moderate and still below the standard of OEE value for world class company that is 85%. While the factor of Six Big Losses most influential on the low effectiveness of Press 2A machine is Reduced Speed Loss with total loss for a year of 56.411 minutes or 53% of all losses.

Today many people communicate using video content over the internet, either one-way, two-way or even multi-way or conference-friendly communication. Skype and WhatsApp are one of them, with a huge number of users around the world. The 802.11 wireless network is still the primary choice to access on the internet, especially for users with indoor mobility. Through the mobile application platform, Skype and WhatsApp service users can move from one place to another. unfortunately, this will create a variation in signal power reception on the device used in the scope of the 802.11 network access point. So in this study, we want to know the response of Skype and WhatsApp application when there is a change of signal strength on 802.11 wireless networks, through analysis of received RTP packets. The data show to us, WhatsApp managed to stream RTP packets of nearly 12 thousand packages, compared to Skype which only revolves around 4800 packages.

Intelligent Traffic Light System with Dynamic timing control employs sensor and algorithm that has been design to solve the original problem of ordinary traffic light which is applied static timing for vehicle traffic flow control. Therefore to build a dynamic traffic light timing control system an algorithm and a sensor is a must. In this paper we proposed a Fuzzy TOPSIS algorithm to be used for traffic light timing control system based on real time quantity vehicle and vehicle classification. Using Fuzzy TOPSIS algorithm we can sets priority vehicle based on its parameter (in this paper we set to vehicle length). We can determine that the trailer truck gets more prioritize based on its length, the second priority would be bus, and the third one was car. Also using its coefficient we found the timing for each vehicle. For every trailer truck the timing would be 2.771552 seconds, for every bus the timing would be 2.581965 seconds and for every car would be 1.862602 second.

This study was aimed at clarifying whether the variables of job satisfaction and motivation significantly influence the employee performance at PT. Era Media Informasi as well as at knowing the variables that most strongly affect the employee performance. The research methods used were a survey with a quantitative approach and a questionnaire as main instrument. The data sampling method used was proportionate stratified random sampling.The data were analyzed by using qualitative and quantitative methods with five formulas: multiple regression analysis, T test, F test, the coefficient of determination, and correlation analysis. The test conducted with the aid of SPSS 24.0. The results showed that job satisfaction and motivation significantly influence the employee performance at PT. Era Media Informasi.

Ergonomics is one area of science that study on the workload and fatigue of the workers. The industry needs to increase operational time to 24 hours and 7 days, has become a necessity to meet customer satisfaction. The impact of increasing operating time, necessitated employees working at the night shift, one of which is security officer, with main task of maintaining the safety and security of the company and its employees for 24 hours. Working the night shift can lower performance and interfere of health, because it causes drowsiness, fatigue and physical sluggishness. The objectives of this research is to evaluate the workload of the security officers working the night shift. This research using SOFI, NASA-TLX, Heart Rate and Energy Expenditure method. Results of this research prove that methods can used to determine the workload, with light categories. The Security officer experience fatigue after working 5 days consecutive, be marked the emergence of drowsiness. As a recommendation, a good of work shift rotation systems is shorter rotation system, i.e. 2 days of morning shift; 2 days of day shift; 2 days of nights shift, and 2 days off, with this rotation system, security officer will only experience a mild drowsiness.

This study analyzes the effect of receivables management on the profitability of the main sector companies listed in the Indonesia Stock Exchange (IDX) in the period 2007 to 2016. Sampling research uses purposive sampling technique which the sample selected is based on certain criteria. There are 27 seals consisting of 11 agricultural sectors and 16 mining sectors that meet the criteria to be examined using Quantitative Descriptive approach. Receivables management is measured on the average collection period of receivables expressed by the average collection period. To clarify the effect of receivable management on profitability, so the data are added other independent variables such as current ratio, size, and financial debt ratio. The size of profitability is expressed by gross operating profit. Data processing is conducted by Eviews 9. To test the effect, the research used fixed effect model with feasible generalized least square approach (FGLS). From the test results, there is a significant influence between the average collection period variable, current ratio, size, and financial debt ratio on gross operating profit.

Telerobotic system is needed in several environments to perform a process in a remote system using a robot. Some peripherals are connected and used in a telerobotic system. Unfortunately, to interconnected the peripherals, control remotely and perform a task entirely in limited time is not easy. It needs a robust control architecture. Several classic and modern control has been attempted. This paper proposed a behavior-based control architecture to control a telerobotic system using Bluetooth. Several experiments have been performed in a real robot. Based on some results, the proposed system able to run a telerobotic system to perform several tasks well.

Splicing rebar with lap splices must be done in its implementation due to the influence on the methods of implementation and the availability of existing reinforcing steel length. Lap splices length (ld) serves to channel the force borne by the steel reinforcement. Lap splices length testing conducted to determine the distribution of force occurs. The test specimen lap splice using a class B which is 1.3 ld with concrete covers at least 3 cm. By using an experimental study in which the use of reinforcing steel D-10 with a lap splices length of 1.3 ld by 43 cm, 1.2 ld by 40 cm using K-400 concrete and calculation analysis produces the lap splices length 27 cm and 30 cm use quality of concrete K-400 and K-450. Tests using the tensile test equipment (Universal Testing Machine) in laboratory B2TKS BPPT. Results from this study is the length of the lap splices of 1.3 ld and 1.2 ld use quality of concrete K-400 is able to meet the mechanical properties of reinforcing steel for the collapse occurred in the reinforcing steel. With lap splices length 27 cm and 30 cm using quality of concrete K-400 occur in lap splice collapse after passing the yield stress of reinforcing steel 40 kg/mm². While the lap splices length 27 cm and 30 cm using the quality of concrete K-450 collapse there are a difference between the test specimens due to the tension that occur closer to the ultimate stress of rebar's at 57 kg / mm²

Lighting on the field of play in Aquatic Stadium includes only general lighting on above the floor of the stadium. This paper assesses types of lighting for GBK aquatic stadium, which were done in order to find the suitable lighting needs. It involves the process of designing to provide minimum requirement illuminance of FINA standard. The paper compares two lighting design proposals by illumination measurements, the values expected during the design phase, that used to fulfill a good level of lighting in Aquatic Stadium.

Toko Merah includes the Old Building which is one of the 216 cultural heritage monuments in the whole of DKI Jakarta and also one of 8 VOC monuments inherited within the walls and moats of the original Batavian city that are the conservation areas of the Old City. Compared the other old buildings, the Toko Merah is the only official residential building in the VOC's most intact and well-preserved era and retains its authenticity but has yet to be functionalized or adaptive reuse by its owner. This study focuses on Aesthetic studies on the elements of indoor space and its relation to the history of VOC building ownership into a Toko Merah with a semiotic approach. Physically Building space in the Toko Merah as an artefact has a harmony between the beauty of visual elements of decoration, and material that is interpreted socio-cultural status of past glories that have the beauty, harmony and meaning cannot be separated from the form of sign. In this study examines the aesthetics of Architecture Red Store with Roland Barthes semiotic approach as a tool to read the symbol of culture that are stored on the building. Semiotic is part of a methodology in the social science that tries to view the world as a system of sign or symbol. In this study examines the aesthetics of Architecture Red Store with Roland Barthes semiotic approach as a tool to read the symbol-a symbol of culture that are stored in the building. Semiotics is part of a methodology in social science that tries to interpret it as a system of relations that has the base unit with the sign (symbol). The application of semiotics was quite extensive including the architecture and building layout which highly influenced by social behaviour, standpoints and community's ideology. Thus aesthetics research of interior with semiotic approach as a study on visual elements and ornament as an artefact shows the symbol of the absolute presence which has linkages to the meaning in the past and the present that contains symbolic values as an interpretation of meanings that are capable of supporting research on the image of the building space in more purposeful, objective, systematic and structural history of ownership and in accordance with the functions of the building at the time. The Result found that the Architectural symbols in Toko Merah highly contextual of society in colonial period.

Klenteng is religious building of Chinese Indonesian community, with variety of Gods worshipped inside. The decision to choose the primary Gods worshipped in Klenteng will reflect social dynamics of Chinese Indonesian culture. Since their arrival in Jakarta and surrounding areas around 17^th Century, Chinese Indonesian community's shift of situations and progress will have reflected on change of community's composition, language dialects, occupation, etc. This research focused on literature and field study; combine quantitative and qualitative research.

Flood is the most frequent natural disaster, with regards to the very large area of Indonesia, flood hazard related information is urgently required especially in a Geospatial format which requires a mapping effort of flood-prone areas. This is required to address which area need detail analysis and to support projected damage and loss assessment. We utilized a simple yet robust SCS method which is a well-known method to calculate runoff composed of simple calculation formula but proven to be able to do flood-prone area mapping effectively. Satellite rainfall dataset has been given as the main forcing factor in SCS formula to generate runoff values. The results of this research experiments have been successfully produced the map of the flood-prone areas in Java Island and therefore confirm that rainfall data is the primary forcing factor to develop flood hazard map rather than solely use topographic data. A combination between runoff and the other hydrological parameter such as flow accumulation might be useful to enhance the existing Java island flood index. According to the results, we proposed to do a more in-depth study in the northern part of Java Island.

According to the Future of Jobs Report 2016, creativity will become one of the top three skills workers will need. With the avalanche of new products, new technologies and new ways of working, workers are going to have to become more creative in order to benefit from these changes. The global impact of 4^th IR had already affected various industries, such as travel and hospitality, retail, media and the entertainment businesses, customer package goods and many others. In most countries in Asian region, government policies had been written to prepare their nation in facing the impact of the 4^th IR. Most countries had plans to become the producer of high-value, diverse and complex products. So, what will happen to the small cottage industries which are run by small families through generations? Some are totally isolated from the mainstream technology and left out from the development radar. In this paper, the researcher shares a case study of an urban batik entrepreneur and some tips in preparing ourselves for the 4^th IR.

In its development, information technology has become an important in people's everyday lives. Security and confidentiality of the data on computer networks today become a very important issue and continues to grow. Some of the cases relating to computer network security today become a job that requires handling fee and security has been tremendous. Vital systems, such as the defense system, the banking system, the hospital system, and other systems, requires such a high level of security. This is mainly due to the advancement of the field of computer networks with the concept of open system so that anyone, anywhere and at any time, have the opportunity to access these vital areas. To maintain the security and confidentiality of messages, data, or information in a computer network would require some encryption to create messages, data, or information that is not read or understood by any person, except for eligible recipients.

Information hollering through electronic links occurs across organizational boundaries with interagency that allow automatic exchange of electronic data between partners in the supply chain. In digital data networks are usually sent by copying them from one place to another, one of the main problems in this case is to verify that the information received from the network is genuine and latest. Blockchain technology is considered to solve the data verification in the data authenticity problem independently, without having to take regardless of who or where the data came from. The application of blockchain fits perfectly with the digital supply chain as it leverages Internet technology as a system that connects all organizations involved in the supply chain. Blockchain consists of a set of data consisting of a chain of data packets where each block consists of several transactions in each block can be validated using cryptographic means, cryptography itself consists of two kinds of cryptographic symmetric and asymmetric cryptography. In this paper the application of blockchain uses cryptographic symmetric with Rijndael 256 algorithm which is famous for its easy resistance, speed and design. the results of discussions using technology and blockchain on the digital supply chain is still a concept of application. From the concepts, the researcher concludes the application of blockchain technology with the data structure can be applied by sharing encryption and can be applied in some cases, such as data verification for face recognition, artificial intelligence or machine learning.