bluuebunny/crossref_metadata_2025 huggingface dataset:
Cryogenic pumps of mobile machinery
Authors: Babikova D , Kalugina M , Petrov A , Protopopov A
Published: May 2020

Cryogenic pumps are of particular importance in mobile machinery, in particular in wheeled and tracked vehicles. This is due to the development of hydrogen energy. In the nearest future, we will see hydrogen powered mobile cars. In this regard, it would be useful to have an up-to-date overview of modern cryogenic pumps. This article discusses the main types of cryogenic pumps, identifies problems encountered in the design and operation of pumping units and formulates the requirements for these devices. A brief overview of the most common designs of cryogenic pumps of foreign and Russian production is presented.
Analysis of the centrifugal pump operation inunsteady modeas apart of a mobile machine
Authors: Protopopov A , Anisimova A , Mukhlaeva A , Kalugina M , Babikova D
Published: May 2020

Mobile vehicles, both tracked and wheeled, are often used to refuel/unload stationary tanks. In this case, the unsteady mode of operation of such centrifugal pumps is often observed. A constant change of operation conditions, in particular the static component of the pump head, leads to a change in its operating mode, as a result of which most of the time the pump operates in off-design mode. A methodology has been developed for determining the actual pump efficiency for a tank filling-draining cycle with two variable parameters: the distance from the level of the pumped fluid in the well to the bottom of the tank (to the on float) and the tank height (or the distance between on and off floats).
Contribution of Activated Carbon Based on Cacao Peels (Theobroma cacao L.) to Improve the Well Water Quality (COLOR, BOD, and COD)
Authors: Yetril Yuli , Marantika Dwi Astuti , Alamsyah Takdir , Alif Matlal Fajri , Zein Rahmiana
Published: May 2020

In this research, we have made activated carbon from the cacao peels (Theobroma cacao L.) for the purpose of water purification. The cacao peels activated using 50% H3PO4at the temperature of 400 °C for 1 hour. Scanning Electron Microscopy was applied for a surface analysis of activated carbon, and the functional groups identified by Fourier Transform Infra-Red (FTIR). The adsorption process was carried out by a column methodwith a flow rate variation of 5 mL/min and 10 mL/min. The results showed that by using 2 grams of actived carbon with a flow rate of 5 mL/min is the optimum condition, with the obtained absorption efficiency of 91.8% BOD, 90.2% COD, and 96.5% color. Morphological analysis has determinedthe changes in pore on the surface of activated carbon. Analysis of functional groups showed that the produced activated carbon hada pattern of absorption with OH, CH, and CO type of bond. Based on the results, it can be concluded that the activated carbon of cacao peels can improve the quality of dirty well water, and make it consumable for the daily use.
The Implementation Of Sound Output Image Processing With Wireless Based On Control To Vehicle Identification
Authors: Aulia Siska , Maria Popy , Asri Aprinal A. , Dewi Ratna
Published: May 2020

Vehicle license plate identification is a system that utilizes image processing techniques to identify vehicles automatically from the vehicle license plate image. This system can be applied in various applications such as tracking stolen cars in homes or parking lots, automatic parking ticket payments, and collecting traffic statistics. Parking space as a facility to park motorists’ vehicles to be more organized. Parking space is currently still done conventionally. The development of technology, conventional control systems developed into electronic access systems, one of which is a monitoring system. The monitoring system using CCTV is a monitoring device, but it is expensive at the cost of electrical, network installation and limited mobility of device placement. In this study a Raspberry Pi-based room control system was designed. Raspberry Pi to build inexpensive monitoring systems and electricity-saving technology. This study aims to create a remote-based IP camera control system wirelessly for processing image plates of vehicle sound output with Raspberry Pi. The system starts by capturing the vehicle license plate with a Raspberry Pi-based camera or webcam. The control system is created using a motion program, and plate image processing uses digital image processing techniques and the Optical Character Recognition (OCR) method. The results of the system research can identify a Raspberry Pi server-based vehicle plate. The result is the vehicle license plate or text and voice output with text to speech technology. The results of implementing image processing from nine plate tests are 90.278%.
IoT: Heart Rate Monitoring Tool Using Android with Alert Messanger Telegram System
Authors: Yuhefizar  , Nasution Anggara , Putra Roni , Asri Ervan , Satria Deni
Published: May 2020

Patients with symptoms of arrhythmias must live a healthy lifestyle and routinely conduct consultations and control the heart rate with the doctor. The most important of these is an integrated health monitoring tool. In this study a portable heart rate monitoring tool is proposed for patients at risk of low-cost IoT-based alert systems using a telegram messager. The ESP8266 Wifi module functions for communication to the web server gateway and pulse sensor to detect heart rates that converted to Bits per Minute (BPM). The heart rate data is then stored in the database server using TCP / IP communication — heartbeat information in realtime with Android display. The system alert will send to the doctor/health worker and family if the heart rate is below 60 BPM and above 100 BPM, the time required for sending system alerts with a telegram messager is around 6 to 7 seconds. Test results show an average error of the heart rate measurement of 4.75% and the entire system is running well. With this tool the patient is at risk of being able to work more safely, and the doctor and family are easier to supervise the patient.
The Detecting of Damage Conductor with Guided Image filter
Authors: Ismail  , Hawari Kamarul , Yondri Surfa , Firdaus  , Yefriadi  , Harun Nasrul
Published: May 2020

The Damage of electrical conductor of high voltage transmission system is very common. This problem effected the distribution of electrical power from the sources into the costumer place. The main cause of this problem if come from the damage of electrical conductor. There were many ways to detect damage conductor so far. The most common is through compute the impedance of transmission line. This method is accurate, but it needs to switch of the line for a while. This disruption contribute losses for the costumers and energy provider. In order to handle this problem, our proposed method is to detect the damage conductor with Guided Image Filter. The input image is a visible image and the reference image is invisible image. The processing is very simple. The result obtained has high accuracy. The accuracy is shown on the detecting map.
Tajweed Segmentation Using Pattern Recognition, Extraction and SURF descriptor Algorithms
Authors: Zuraiyah T A , Madenda S , Salim R A , Noviana R
Published: May 2020

This paper proposes a method of detection and recognition algorithms and recitation of the Qur’an. The methods and algorithms are packaged into a software system application to allow a person to learn recitation and how pronunciation is good and right and real-time. Any recitation of the Qur’an written in a different color of the letters and punctuation instead of recitation and tajweed each have different shapes. Variable color is used as a reference for the segmentation process forms of recitation and SURF algorithm used for feature extraction process forms. Feature any form of recitation is stored in the data base (knowledge base) accompanied by explanatory text recitation of data and audio pronunciation files. In the process of recognition when the user enters a query tajweed image, Euclidian distance is used to measure the similarity between the query and the shape feature tajweed recitation shape features that exist in the database.
E-Green Jukebox: The Development of an Electronic Jukebox That Accept Aluminium Can as Token
Authors: Taib Wan Mohd Rumaizi Wan , Omar Nor Haizat , Jalani Nur Anizah , Yusoff Zakiah Mohd , Abidin Amar Faiz Zainal
Published: May 2020

Jukebox has been part of the outside dining experience in the western family restaurant in the year 1940s to 1990s. The progression of technology in entertainment industry makes the jukebox become obsolete due to the relatively expensive price to play a song from the jukebox. At the same time, most of the shopping mall food court in Malaysia required the customers to self-service and self-clean after dinning. One of the problem encountered is the customers do not usually separate the waste when throwing the waste. This project aims to revitalize the jukebox by reintroducing the song machine with a slight twist, the token used is aluminum can. This is to encourage the customers who purchase can drink in the shopping mall food court to recycle the aluminum can and in the same time to enjoy the retro feeling of dining experience with song played by jukebox. This paper presented the development of this jukebox called Green Jukebox. The result shows the potential of the prototype for the real application.
A Wideband Rectangular Patch Microstrip Antenna using Quad-Slotted Ground Plane
Authors: Fernandez Rudy , Ilham Muhammad Aulia , Andre Hanalde , Firdaus
Published: May 2020

This research proposes the use of a quad-slotted ground plane in enhancing the bandwidth of rectangular patch microstrip antenna. A feeding line is used for exciting the antenna patch. On the ground plane, there are 4 slots which are designed in a rectangular form with the same dimension. Each slot has a height of 22.5 mm and a width of 15.4 mm. The antenna is designed on FR4 epoxy which has a dielectric constant of 4.4 and a thickness of 1.67 mm. The result shows that the return loss of -14.51 dB in the operating frequency of 1,810 MHz in the LTE Band 3 Frequency, VSWR is 2.19 and the gain is 3.2 dBi. The achieved bandwidth of 200 MHz can cover the frequency range of the LTE Band 3.
Bioethanol Producing Equipment Prototype Using Cassava Peel Using Microcontroller-Based Destilation Principles
Authors: Yefriadi  , Alfitri Nadia , Hidayat Anton , Efendi  , Nasrul  , Maulana Yohanda Putera
Published: May 2020

Bioethanol is a biochemical liquid in the process of fermentation of sugars from carbohydrate sources using the help of microorganisms followed by the distillation process. Bioethanol can be used as a substitute for fuel oil depending on its purity. Bioethanol with 95-99% content can be used as premium substitution (gasoline), while 40% content is used as a substitute for kerosene. Cassava peel obtained from cassava plant products (Manihot esculenta Cranz or Manihot utilissima Pohl) is the main food waste in developing countries. Each kilogram of cassava can usually produce 15-20% of tuber skin. The cassava skin starch content is quite high, allowing it to be used as a source of bioethanol feedstock. In this research, the distillation process to produce bioethanol is carried out by controlling the temperature and pressure in the distillator so that the bioethanol produced can be maintained.
Ad8232 Sensor Implementation To Detect Fatigue
Authors: Yuliza Milda , Angraini Tuti , Susanti Roza , Effendi  , Isma Teguh Wijaksana
Published: May 2020

Fatigue is a protection mechanism to avoid further damage, so that recovery occurs after a break. Fatigue (fatigue) is a subjective feeling. Work fatigue is a condition that is accompanied by a decrease in efficiency and the need to work. the effects of excessive activity result in fatigue. lack of knowledge results in excessive effects of fatigue. the way to overcome this problem is by utilizing an electrocardiograph (ECG) sensor. The use of electrocardiograph sensors (ECG) to determine the fatigue of smartphone users based on heart rate rhythm. The sensor used as a fatigue detection is the AD8232 type. The result of this process is safe or unsafe when using a smartphone. When BPM is worth 60 <BPM <120, the condition of smartphone users is safe, whereas when BPM <60 or BPM> 120, the condition of smartphone users is unsafe. Based on the results that have been tested on four samples there was a change in heart rate rhythm (BPM) during one hour and fifteen minutes of testing.
Design System Integrated Licensing Service - Based Information Technology
Authors: Batara Chris
Published: May 2020

The government management system, which has been a pointed and long hierarchical system of authority and command, must be developed into a network organization management system that can reduce decision making lines and broaden the span of control. Development of E-Government, it needs an in-depth concept to study and determine the workflow of a government process that will be developed and use technical standards and recommendations as a reference. In general, the objectives of this study are: (1) The establishment of quality, fast, and affordable network of public information and services to the wider community, (2) Formation of an interactive relationship with the business world to deal with changes and international trade competition. (3) Establishment of mechanisms and channels of communication with State institutions and the provision of public dialogue facilities. (4) Establishment of management systems and work processes that are transparent and efficient.

In this research specifically, the concept of e-government will be elaborated, which focuses on technological issues and then discusses the modelling of a one-stop licensing service system using the Unified Modeling Language approach which is one of the standard components in the e-government concept language in this study. To achieve these objectives, a method with several stages of activities is carried out as follows, namely: observing the licensing process and observations in several North Toraja District Offices, analyzing the requirements specifications in e-government development, creating a model of the one-stop licensing service mechanism that will be applied, making designs and making applications in the form of prototypes, after that implementation. The benefits obtained from this research are to increase the effectiveness and efficiency of work from the government, the bureaucracy path is more concise, the relationship between the government and the community and business people is increased, has greater opportunities and is open to join the global community.
Heavy metal toxicity and the influence of water quality in watershed for enhancing fisheries food security
Authors: Ujianti R M D , Androva A
Published: May 2020

This study investigated the toxicity of heavy metals such as Cu, Fe, Cr, Zn and Mn and the influence of water quality in Garang Watershed Semarang (Banjir Kanal Barat River), Central Java Indonesia for enhancing fisheries food security. The fish biomarker in this research is Nile Tilapia (Oreochromis niloticus). The range of Cu, Fe, Cr, Zn and Mn in aquatic environment were 0,15 mg/L; 0,82 mg/L; 0,025 mg/L; 0,562 mg/L and 0,01mg/L. The range of Cu, Fe, Cr, Zn and Mn in Nile Tilapia were 2,547 mg/kg; 306,3 mg/kg; 0,36 mg/kg; 16,69 mg/kg and 35,6 mg/kg. Toxicity in fish is exceeded the limits of food security regulation in WHO and BPOM, and water quality regulation in Government Regulation of Indonesia No 82/2001 on Water Quality And Water Pollution Management. Management in water quality is and toxicity is important for enhancing fisheries food security. Maintaining food security in the fishery sector is very important for the stability of community nutrition because with good food public health will be guaranteed.
Implementation of Supply Chain Risk Management (SCRM) Using House of Risk (HOR): Case Study on Supply Chain of Craft Bag Industry
Authors: Rizqi Z U , Khairunisa A
Published: May 2020

The length of supply chain at Ajeng Gallery causes emergence of risks that can harm the company. Moreover, the company has not implemented risk management properly so that the purpose of this study is to implement supply chain risk management properly. By using House of Risk, it is obtained 10 risk events and 9 risk agents. 2 risk agents that have the largest percentage are mitigated. There are 4 priority mitigation strategies to overcome risk agents. The implementation of mitigation strategy can reduce risk levels in risk map based on previous research that discusses the same mitigation plan.
Analysis of Time Lapse Microgravity Anomaly Data Case Study in Kota Lama Tourism Area Semarang Indonesia
Authors: Supriyadi S , Khumaedi K , Sugiyanto S , Setiawan Fajar , Yani M. , Teguh T
Published: May 2020

Time lapse microgravity survey has been carried out in Kota Lama Semarang using the Gravimeter Scintrex CG5 on January 2019 and July 2019 with a total of 75 points spread evenly at research field. There are three possible values of gravity anomaly between time, positive, negative, and zero does not change. The results which is an anomaly which is known as time lapse microgravity anomaly show that maximum positive 0,29 mGal in the north and south, and minimum negative -0,11 mGal in northeast and southwest. For the time lapse microgravity vertical gradient anomaly show that maximum positive 0,0013 mGal in west, center, east, and minimum negative -0,0082 mGal in north and south. Conclusion are rainfall data throughout the study range show a downward trend and calculation of groundwater reduction using this data obtained a groundwater level decrease an average of - 3.63 mm.
Comparative Analysis of Mean Variance Efficient Frontier and Resampled Efficient Frontier For Optimal Stock Portfolio Formation
Authors: Siswanah Emy
Published: May 2020

One way to form an optimal stock portfolio is to use the mean-variance efficient frontier (MVEF) method. However, the MVEF method is susceptible to changes in input. An optimal stock portfolio formation method has been developed to overcome this problem, known as the Resampled Efficient Frontier (REF) method. The REF method is a refinement of the MVEF method. REF is done by generating data repeatedly using the Montecarlo simulation. The parameters needed to form a stock portfolio using REF are the average input return μ and the covariance variance matrix Σ. The calculation results show that the weight of the REF portfolio is not negative (there is no short selling strategy). The Sharpe ratio of the REF portfolio is also higher than the MVEF. A larger Sharpe ratio indicates that the REF portfolio has a better performance compared to MVEF. However, empirically based on a case study simulation, the MVEF method experienced a smaller loss compared to the REF method.
Reducing the High Temperature of Water Radiator Dump Truck (HD 785-7 Type) by Making Special Tool
Authors: Manurung Vuko A.T , Joko Yohanes Tri , Santosa Agus
Published: May 2020

The high temperature of the engine in the dump truck vehicle will cause a decrease in the performance. Therefore, it is necessary to monitor and analysis the causes high temperature by creating a program called Intelligence Availability. This program is monitor and control the critical engine conditions and to make sure the engine coolant temperature can’t exceed 85 °C. In March 2018, 50 units HD 785-7 type have temperature above 85 °C. The main cause is the dirty core of the radiator and the absence of tools to clean the cores, so it is necessary to make a special tool to clean the radiator cores by flushing method. This flushing method can reduce the high temperature to be normal.
Formulation of Hand Sanitizer Gel of A-Pinene Isolated from Turpentine Oil and its Antibacterial Activity
Authors: Wijayati Nanik , Widiyastuti Anisa , Mursiti Sri , Rakainsa Senda Kartika
Published: May 2020

Research on the antibacterial assay of the α-pinene and turpentine oil in hand sanitizer gel formulation has been carried out. Antibacterial activity assay using the disc diffusion method showed that turpentine oil has the highest antibacterial activity with a inhibition zone of 13.8 mm against Staphylococcus aureus and 8.83 mm against Escherichia coli, whereas α-pinene has the highest antibacterial activity with a 2.2 mm inhibition zone against S. aureus and 2.34 mm against E. coli.
Planning the New Factory Layout of PT Hartekprima Listrindo using Systematic Layout Planning (SLP) Method
Authors: Gozali L , Widodo L , Nasution S.R. , Lim N
Published: May 2020

PT Hartekprima Listrindo is a manufacturer that produces silent, open and mobile/trailer types of diesel-powered generators, along with AMF/ATS panels and synchronous panels with the HARTECH brand. The generators produce eight Kva power variants up to 3000 Kva power. PT Hartekprima Listrindo plans to increase the production capacity by relocating its factories to a new place. The production capacity of the new plant is planned to achieve 20 generators/year in a 5184 m2 total land area of production. This relocation design uses Systematic Layout Planning (SLP) method, and the layout design is simulated. The SLP method is carried out by describing material flow in the production process using a Multi-Product Process Chart (MPPC), and then continued by using Activity Relationship Chart (ARC) which illustrates the relationship among the activities of the departments. The next stage of layout design is describing the Activity Relationship Diagram (ARD) and Area Allocation Diagram (AAD). The comparison layout design resulted in 2 alternative layouts that are better than the initial layout. The chosen layout design is alternative design 1 because it reduces transportation time and increases movement efficiency.
The use of FMEA for the Quality Control Analysis of Greige Fabrics (case study in the Weaving Department of PT. Unitex, Tbk)
Authors: Fithri P , Jovie Andra D , Wirdianto E , Taufik
Published: May 2020

PT Unitex, Tbk, is a textile company in Bogor. The problem that is found in this company is the number of defects that occur in the weaving section, namely reaching. If conditions like this are allowed, it will cause losses to the company. With these conditions, PT Unitex wants to reduce the number of defects to a minimum.For this reason, the main problem raised in this study is how to control the quality of defective fabrics produced by PT Unitex, Tbk, to support and evaluate the quality control policies implemented by PT Unitex, Tbk by using Pareto diagram tools, and fishbone diagrams later in analysis using the Failure Mode And Effect Analysis (FMEA) method. The results of this research are obtained: In the period July -December 2018, 5 types of fabric defects were most dominant, namely OSA TOSHI, NIHON DOSHI, USUDAN, TATE GIRE, and ATSUDAN. Analysis of Failure Mode and Effect Analysis of the causes of failure obtained from the fishbone diagram obtained the highest severity value for human factors, the highest occurrence value for less precision and control, and the highest detection value for engine maintenance.
Greedy Heuristics for the Maximum Covering Location Problem: A case study of Optimal Trashcan Location in Kampung Cipare – Tenjo – West Java
Authors: Sekar Amarilies Harummi , Perwira Redi A A N , Mufidah Ilma , Nadlifatin Reny
Published: May 2020

Having a rapidly growing economy without proper waste handling system and infrastructure has made Indonesia one of the top contributors of plastic marine debris in the world: 3.22 million metric tons of mismanaged plastic waste per year. The mismanagement of waste is worse in the rural area where the number of available public trashcan is limited and the people have no idea where their trash actually ends up. In this research, a case study of waste management in Kampung Cipare - Tenjo, a small village 80 kilometers away from Jakarta, is conducted. The biggest purpose of the research is to educate people about sanitation and waste management, initiated by computing the most optimum number and locations of the public trashcans. The problem is addressed as Maximum Covering Location Problem (MCLP) to determine a set of facility locations that maximizes the total demand population served by the facilities within a prespecified maximum service distance. Two greedy heuristics algorithms: Greedy Adding Algorithm (GAA) and Greedy Adding with Substitution Algorithm (GAAS) are utilized to solve the problem. A sensitivity analysis is also done to check the result on the effect of trashcan number and maximum service distance to demand coverage. Out of the 26 location candidates, it is concluded that the final 10 locations are the most optimum in terms of demand coverage and service distance. The result of the research has been implemented in Kampung Cipare-Tenjo.
Prototype Design of Plastic Waste Processing Equipment
Authors: Parwati N , Nurdina R , Purwandari A T , Tanjung W N
Published: May 2020

Garbage is the remnants of human daily activities or natural processes that are solid or semi-solid, in the form of organic or inorganic substances, and are biodegradable or non-biodegradable which are considered to be no longer useful and thrown into the environment [2]. Therefore, it is necessary to develop a plastic waste processing device in order to produce an effective output and use of time efficiently. In this research, the development of plastic waste processing equipment products is done by integrating the chopper and heating machine into one tool, then can produce various kinds of recycle products. This plastic waste processor can process thermoplastic plastic types. Thermoplastic is a type of plastic that can be recycled or reprinted by reheating processes, such as Polyethylene (PE), Polystyrene (PS), ABS, Policarbonate (PC), High Density Polyethylene (HDPE) and Polypropylene (PP). To make a prototype design of a plastic waste processing device, a product architecture is carried out for the arrangement of the functional parts of a product in the form of a scheme, then an industrial design is carried out to see the level of importance of the product based on the application of aesthetic and ergonomic art. Product design was designed using Autodesk Inventor software. Then the last process, which is making prototypes of plastic waste processing equipment in accordance with consumer needs. By doing this research it is hoped to be one alternative in dealing with the problem of plastic waste through the creativity of its users in producing recycle products in order to be useful and have a sale value.
Web-Based Application of Reliability Availability Maintainability and Cost of Unreliability Method to Analyze Performance of the Machine
Authors: Alhilman Judi , Fadhil Habibie Muhammad , Tripiawan Wawan
Published: May 2020

Maintenance is important to do in order to maintain or improve the function of the equipment to work optimally. One factor that support the maintenance activities is machine reliability. Higher reliability can reduces process costs. Conversely, engine failure can reduce production output also the business benefits for the community. In business terms, the problem of controlling the Cost of Unreliability (COUR) of equipment and process failure is just a waste of money. Unreliable index costs are simple and practical reliability tools for converting failure data into costs. A long stage in manual calculation of COUR and RAM analysis with more than one applications used as work tool, therefore designed a web-based application with more complete features that can be used to analyze COUR and RAM. This application will simplify the calculation process, analysis, and results management, so it will helps maintenance analysts in doing their work. This application can determine the maintenance policy, predict the performance of machine’s reliability, availability and maintenance capabilities. As well as calculating costs from reliability issues.
A Multi-objective model for a Chemical Industry considering economic risk and environment
Authors: Yu James , Retno Purwaningsih Sri , Ming Wee Hui
Published: May 2020

The research proposes a multiple objective model considering economic risk and environment in the chemical industry. The economic order quantity (EOQ) model is used for the economic aspect which considers the transportation modes and all unit quantity discount. The objective of this research is to optimize economic, safety and green performance in terms of cost minimization, risk control, and carbon emission reduction. A solution approach to obtain the optimal solution is proposed. A numerical example is performed to demonstrate the applicability and efficacy of the procedures.
Analysis of Overall Effectiveness on Hall Separator Punching Machine at PT. DNIA
Authors: Kumala Sriwana Iphov , Syauqillah Nadya
Published: May 2020

PT. DNIA is a company engaged in manufacture of automotive parts, one of which is condenser. Manufacture of condenser components requires small parts produced using a hole separator punching machine. However, it deals with high downtime of the machine, resulting in low production performance. This research aimed to identify the extent of hole separator punching machine performance using analysis of Overall Equipment Effectiveness (OEE) and to analyse six big loses which impact on machine downtime. Calculation results show that OEE value obtained, 48.54%, was still below the standard, and therefore continuous improvement attempt is essential to perform. The low OEE value was a result of low performance efficiency which was caused by idling and minor stoppages of 24.54%. In order to improve the performance and carry out idling and minor stoppages loss, it is important to perform improvement attempt in a number of aspects, such as man aspect by training operators to carry machine-related works, machine aspect by repairing abnormal ups and downs of dies, and material aspect by fixing inappropriate position of header tank (material).
Improved YM Laser Machine Performance with Overall Equipment Effectiveness and Fault Tree Analysis Methods Implementation at PT. XYZ
Authors: Suwandi Arief , Naufal Aulia Zulhilmi
Published: May 2020

In the development of the shoe-making industry, demanding companies continue to improve the quality and quality of production. PT. XYZ responded by improving the performance of the YM Laser machine which is the main engine in the sports shoe production line. The approach is carried out using the entire Equipment Effectiveness Method and Error Tree Analysis. The purpose of this study is to measure the ratio of value availability, performance ratio, quality ratio, total value of OEE on YM Laser machines, identify the root causes of problems and make improvement plans to improve machine performance. YM Laser Machines have a Overall Average Equipment Effectiveness Value of 75.89%. After researching with the OEE method, it was found that the root of the problem was to reduce speed. Furthermore, the investigation using a cause and effect diagram, obtained the main cause is a machine factor. All problems found were solved using Fault Tree Analysis on engine factors and their improvement efforts to make standard lens replacement so that the lens is always in optimal condition, changing the quality of the switch so that it is not easily damaged again, and regularly updating software and replacing standard bolts.
Environmental Management System (EMS) within Construction Site: A case study in Kelantan State, Malaysia
Authors: Omran A , Yahya SHS
Published: May 2020

An Environmental Management System (EMS) was introduced to meet the environmental needs and an organization should have an understanding of what those environmental needs are. In a construction industry, the awareness about the environment performance is improving and the need to protect the environment quality is growing good in order to maintain the sustainability of the development in a country.Spirit of sustainable development embodied and endorsed in the medium- and long-term development strategies such as Third Malaysian Plan (1976-1980) and thereafter, e.g. Seventh Malaysian Plan (1996-2000). Thus, the construction players that involved in the construction projects have to take the responsibility to accept all the regulation related to the environment protection during construction processes. This study concluded that the awareness of EMS among the construction players in Kelantan State is very low. Most of the construction players understand an EMS. However, although they understood what EMS is, yet they did not implement and apply the system within the construction sites. They understand an EMS and its obligation, but some of them, indicated that it is not important to be implemented, as they are doing projects just to get the profit. Although, the construction players understand an EMS, but they do not have any skills and experiences in implementing EMS within construction site.
A conceptual framework for Servitisation of the manufacturing companies to deliver Product–Service Systems solutions: A study case of the Indonesian Motorcycle Industry
Authors: Dewi D R S , Pittayachawan S , Tait E
Published: May 2020

This study develops a framework for the servitisation of manufacturing that covers area of upstream and downstream supply chain to provide a bundling of product and service. An integration of upstream and downstream supply chain is essential to support the Product–Service Systems. However, a research of integrating the upstream and downstream supply chain is still nascent. A Dynamic capability is used as underpinning theoretical framework for this research. Six hypotheses are developed to build the conceptual framework particularly to investigate the relationship between the supply chain capabilities and sustainability performance of Product– service systems in the Indonesian motorcycle industry.
Ergonomic Intervention to Improve The Productivity of Brick Press Tool in Small and Medium Entreprise (SME) Akheng Kobar
Authors: Widodo Lamto , Ariyanti Silvi , Jason Andreas
Published: May 2020

Akheng Kobar is one of the small and medium enterprises (SMEs) that is growing, which produces concrete blocks manually. The brick making process has an ergonomic problem, because the posture of workers in a squatting and bending position for a long time during work. Based on interviews with workers, there were complaints of pain in the back, arms, wrists, calves and thighs. Other complaints include the neck, hands and ankles. In this study, an analysis of initial working conditions, tool design, implementation and results analysis were carried out. Analysis of current conditions using REBA (Rapid Entire Body Assessment), obtained a score of 11, and the JSI (Job Strain Index) analysis score was 39. The results indicate that the process of bricks production must be changed and improved. Furthermore, it was carried out to design a concrete brick press, with the aim of reducing the level of ergonomic risk and increasing productivity. Tool design based on operator complaints, body posture analysis and anthropometric data. Of the several alternatives, obtained the best design alternatives and then made a prototype. Implementation results show a decrease in REBA Score from 11 to 7. Ergonomic Risk Factor decreased from 9 to 5, Job Strain Index scores decreased from 39 to 6.8, and standart time of process decreased by 44, 38%.
Inventory and Order System Development at PT.X
Authors: Ratanadewi Steffi , Bachtiar Marsellinus
Published: May 2020

PT X is Indonesian cutting tools importer, which sells various kinds of cutting tools, such as Carbide End Mill and Reamer. This company is facing two problems. The first is inefficient order process. The second problem is inefficient inventory update, which takes about eight minutes. Logistic Manager double checks the product quantity by counting physical product, to make sure that the quantity is updated. This process affects both order and procurement process. The objective of this study is to propose a new system, which will be able to perform simpler business process and reduce completion time. Modified Waterfall Approach of System Development Life Cycle (SDLC) was chosen, as it is suitable for well – understood processes, where doing overlapping phases is permitted. This study develops UML Diagrams, also medium and high-fidelity prototypes. User Interface Testing, (consists of learnability, error, memorability, and satisfaction measurement) was done to examine system performance. Result shows that the proposed system performs better than current system. The completion time of create order is reduced 27.51% to 3.11 minutes, availability check is reduced 75.99% to 2.3 minutes, incoming inventory update is reduced 99.67% to 7.69 seconds, and outgoing inventory update is reduced 94.95% to 12.46 seconds.
Reducing Waste in Manufacturing Industry using Cost Integrated Value Stream Mapping Approach
Authors: Kosasih Wilson , Doaly C O , Shabara
Published: May 2020

In recent years, every manufacturing industry has tried to eliminate various wastes in its operations. The effect of wastes will have a direct impact on increasing costs. Therefore, the cost approach is integrated into the value stream mapping to obtain an illustration of the cost losses incurred. This paper describes how to apply integrated value stream mapping with the cost approach. Finally, this approach is considered effective in mapping the amount of cost losses incurred due to the wastes that occur along the value stream.
Vehicle Routing Problem with Heterogeneous Fleet, Split Delivery, Multiple Product, Multiple Trip, and Time Windows: A Case study in fuel distribution
Authors: Nugroho S M , Nafisah L , Khannan M S A , Mastrisiswadi H , Ramdhani M N
Published: May 2020

The distribution of fuel in Pertamina co. Ltd Yogyakarta region is carried out using three types of vehicles, namely vehicles with a capacity of 32 kl, 24 kl, and 16 kl. In determining the distribution route, the operator chooses the gas station based on the first order and the type of vehicle determined based on the vehicle’s ability to maneuver at the gas station. The determination of the route has not taken into account the time that affects the distribution, such as average speed, loading time, discharging time, and the time limit for completing the tour. So when in the high demand for fuel distribution, three gas stations are delayed from 29 gas stations in cluster I. This study analyzes the distribution of fuel in cluster 1 for Premium and Bio-Solar products. In determining the distribution route and distribution time using the VRP method by considering Heterogeneous Fleet, Split Delivery, Multiple Products, Multiple Trips, and Time Windows. The calculation is done using sequential insertion, where the selected customer is based on the smallest CT. The results of this study indicate that after processing, it was found that late customers were reduced to 1 in 3 late customers. Total mileage was reduced to 693.3 km from 701.5 km. The total tour completion time was reduced to 71, 819 hours from 81, 819 hours, and distribution costs increased to Rp. 20, 754, 119, 875.00 from Rp. 18, 511, 210, 625.00.
Development of Low-Cost Multi-Input Automated Storage and Retrieval System (AS/RS) for Educational Purposes
Authors: Theopilus Y , Tjandra S S , Sagara B
Published: May 2020

Nowadays, learning about automation technology in higher education is important to produce graduates who are ready to work. However, in developing countries, this learning is often constrained by the problem of limited costs and places to procure practice tools. To overcome this problem, this research focuses on developing automation technology learning tools that are inexpensive and less space. The object is Automated Storage and Retrieval System (AS / RS) which is commonly used in various industries for material handling but is too expensive and large for learning. The AS / RS developed is an Arduino based AS / RS with multi-input modes that are pendant, coordinate, and RFID. The AS / RS is designed to facilitate students to learn the work system, electrical circuit, and programming algorithm. The research was held in several stages: problem identification, electrical hardware design, mechanical design, algorithm and programming design, prototyping and testing. The AS / RS prototype only costs $ 230 and requires 600 x 400 x 550 mm space. The testing was carried out on functionality, usability, and educational ability using task completion and essay post-test method. Based on the test, the three aspects of the designed AS / RS were very satisfying.
A System Performance Analysis of Ship to Shore Operation Considering Crane Availabilities using Simulation Approach
Authors: Aqsha BD , Siswanto N , Suparno  , Tama M I
Published: May 2020

Indonesia which consists of many islands has difficulty in establishing national distribution logistics. Because of the sea traffic expansion in Eastern part of Indonesia, the existing port is limited and cannot handle such a problem. To accommodate this problem, new port is built in Surabaya, East Java, Indonesia. However, the new port usually faces to handle an unlimited demand with limited resources. This paper evaluates the port productivity of container loading and unloading activities. Equipments used in container loading and unloading at this port include cranes and other equipments. Because of many complexities in the observed system, discrete event simulation is used to evaluate the terminal operation performance. The simulation results show that STS crane quantities and formations for loading and unloading activities are affecting the new port productivity.
Workload and Fatigue Assessment on Air Traffic Controller
Authors: Triyanti V , Azis H A , Iridiastadi H , Yassierli
Published: May 2020

Workload experienced during certain work periods may cause fatigue. In Air Traffic Control work, a high air traffic rate may increase the workload and fatigue, especially during rush hour and may lead to risky situations. This study intended to estimate the value of the mental workload and fatigue of an Air Traffic Controller (ATCo) in airport X during their work period. The NASA-TLX and Samn Perelli Scale were used to quantify mental workload and fatigue. The questionnaires were distributed to ATCo and 257 questionnaires were obtained. Results showed the value of the mental load at airport X tended to be higher than other airports (average 66.53), especially for mental demand, time pressure, and effort. The value of fatigue before and after work also increased (average 1, 749 to 3, 506) included in the safe category. However, there was no convincing evidence that differences in mental load values affect the value of fatigue. These results indicated that although the workload of ATCO was relatively high, the ATCo in Airport X still can handle it and did not cause excessive fatigue.
The Application of Soft System Methodology to design the Conceptual Model for Intelligent Supply Chain Model of Natural Fibre Agroindustry
Authors: Nurhasanah N , Machfud  , Mangunwidjaja D , Romli M
Published: May 2020

Soft system methodology in designing an intelligent supply chain is defined as a system-based method that is holistically constructed without reduction, according to representation from the real world, coming from stakeholders interacting one to another to gain value added and improve profits through data training and data saving on cloud presented from human to system of real-world database. This study aimed to apply a soft system methodology approach in designing an intelligent supply chain model of natural fibre agroindustry. A conceptual model was successfully developed and produced eight activities which were compared though assessment criteria of efficiency, efficacy, and effectiveness. The eight activities mentioned are productivity improvement, data mining to predict demand and stock, development of a collaborative planning forecasting and replenishment model, development of an intelligent decision support system, digital platform construction, value added improvement, enhancement of efficiency and response to buyers, as well as improvement in supply chain performance. This study has not yet carried out the stages of taking action to improve the problem situation, and will be carried out in further study.
Development of chitosan-hyaluronic acid nanoparticles and study of their physico-chemical properties for targeted delivery of anticancer drugs
Authors: Akentieva N P , Gizatullin A R , Silvestre O , Savchuk O , Shkondina N I , Prichodchenko T P , Mitschenko D V , Zhilenkov A V , Troshin P A , Sanina N A , Dremova N H , Torbov V I , Aldoshin S M , Nieder J B
Published: May 2020

Nanoparticles from chitosan and hyaluronic acid were obtained using ionotropic gelation technology. The size of the nanoparticles was investigated using electron microscopy and dynamic light scattering. Nanoparticles were obtained of an optimal size of ∼ 100 nm. A physical association method has been developed of encapsulating nanoparticles with doxorubicin, a well-known antitumor drug, and dinitrosyl iron complex (donor of nitric oxide). The surface potential of nanoparticles was determined by dynamic light scattering. It was shown that HA-DOX: CS {6: 1} nanoparticles were stable and had a potential of -45.6 meV. The localization of nanoparticles in the cancer cells has been studied by confocal and FLIM microscopy. It was found that nanoparticles with doxorubicin are located in the cell near and inside the nucleus. It was shown that the encapsulation of DNIC in the composition of nanoparticles significantly increases the stability of DNIC, prolongs the formation and increases the yield of nitric oxide. A unique nano-system has been created for the delivery of anticancer drugs into the cell.
The impact of the lead on the physicochemical and optical properties of the fluorophosphate glasses doped by Nd3+ ions
Authors: Bogdanov O , Kolobkova E
Published: May 2020

Fluorophosphate glasses of the composition 5Ba (PO3) 2- (38-x) AlF3-57RF2-xNdF3 were obtained, where R = Ba, Ca, Sr, Mg, Pb; x = 0.5, 3, 5 mol%. It was found that the introduction of lead fluoride reduces the glass transition and crystallization temperatures. It has been shown that for all systems containing MgF2, the formation of a uovite phase is characteristic. The UV-cutoff has shifted from 200 nm to 250 nm.
Synthesis, photoluminescence and thermal properties of nanostructured organosilicon luminophore based on 2,2’-bithienyl and 4,7-diphenyl-2,1,3-benzothiadiazole
Authors: Borshchev O V , Skorotetcky M S , Svidchenko E A , Surin N M , Ponomarenko S A
Published: May 2020

Annotation

In this work, novel nanostructured organosilicon luminophore (NOL) containing four 2, 2’-bithienyl donor units connected via silicon atoms to 4, 7-diphenyl-2, 1, 3-benzothiadiazole acceptor unit was synthesized. Photophysical measurements of the NOL revealed the effect of solvents polarity on its photoluminescence quantum yield (PLQY). In THF solution the efficiency of photoluminescence was only 4%, whereas in toluene solution PLQY increased up to 76% without any changing the spectral characteristics. Under the normal conditions, the NOL synthesized is a viscous fluid, which contributes to its good solubility in various solvents. The NOL is thermostable up to 415 °C in argon atmosphere.
New method of obtaining heat-resistant biomorphic composites with carbide reinforcement
Authors: Ershov A E , Prokhorov D V , Stroganova T S , Shmytko I M
Published: May 2020

In this work, an original method of obtaining biomorphic composites of the Me – MeCx type, consisting of several stages, has been proposed. One of the steps is the Infiltration through Nonreactive Solvent (INS) method, which consists in converting biomorphic carbon preforms into porous microchannel MeCx ceramics by transferring a carbide-forming element to carbon through a solvent that does not react with carbon. The interaction of biomorphic alder-based carbon templates with melts of Cu – Ti and Sn – Ti systems has been investigated. It has been shown that as a result of the interaction of biocarbon templates with Cu-10Ti and Cu-20Ti alloys, carbon walls turn into TiC grains of micron and nanometer sizes, which partially repeat the template microstructure. The mechanism of formation of such a structure has been proposed. It has been demonstrated that, upon the interaction with Sn – Ti system, TiC and Ti2SnC layers are formed on the surface of the microchannels with good preservation of the initial template structure.