bluuebunny/crossref_metadata_2025 huggingface dataset:
Feasibility study on the use of fast camera and recording in time-domain to characterize ESD
Authors: Ptak Szymon , Smalcerz Albert , Ostrowski Piotr
Published: December 2018

Fire and explosion protection in industrial conditions requires multidimensional approach. Usually the risk of hazardous zone creation is unavoidable, if the combustible material is processed. Therefore controlling of potential ignition sources is introduced. One of most popular sources of ignition is electrostatic discharge. Depending on the type of the discharge, as well as on exact discharge conditions, energy released might reach hundreds or even thousands of mJ, being able to ignite most of gaseous or dust-air hazardous mixtures. A dedicated methodology was created to record the discharge with fast camera with maximum speed of 1M fps and with the oscilloscope up to 25 GS/s. Dedicated test stand allows to obtain high voltage to create the conditions for electrostatic discharge. The aim of presented research was to analyze the course of electrostatic spark discharge in laboratory conditions and to place the outcomes in the context of explosion safety in the industrial conditions. The course of electrostatic discharge is dependent on various conditions: the polarity, distance between the electrodes, shape of electrodes, grounding conditions, etc. Understanding of the phenomenon is crucial from the point of view of explosion safety.
Geopolymer foam as a passive fire protection
Authors: Łach Michał , Mierzwiński Dariusz , Korniejenko Kinga , Mikuła Janusz
Published: December 2018

More than 200 firefighters and 40 fire engines were involved in battling the blaze of Grenfell Tower in June 2017. Despite the heroic efforts of fire brigades the more than 80 people died. In the expert opinion the reason such size of the tragedy were the cladding - installed on in a recent renovation - has come under scrutiny, with experts saying a more fire-resistant type could have been used. The use of such type of cladding was probably price. The main motivation of research work is to develop cheap and fire resistant material for buildings and applications in civil engineering structures. The main aim of the research was development of foamed geopolymers based on fly ash and investigation their properties. The research methods used were: coefficient thermal conductivity test, fire-resistant test, visual analyses, density measurement and compressive strength test. The results show the foamed geopolymers has low coefficient thermal conductivity between 0.068 and 0.126 W/(m·K). They have excellent fire and heat resistant facilities, including resistance of this type of materials to the erosive action of fire. Moreover, they have reasonable mechanical properties - they were characterized by compressive strength between 0.5 and 3.5 MPa depending on the density, which ranged from 250 to 700 kg/m3. The conducted research confirmed that geopolymers have the highest fire resistance classes and can be used on a wide scale as a material for protection against various types of fire and as fire-resistant insulation materials in construction.
Numerical representation of extinguishing gas discharge process
Authors: Boroń Sylwia , Wdowiak Tomasz
Published: December 2018

The aim of the work was to provide the analysis of the use of computational fluid dynamics (CFD) for modeling the stage of extinguishing gas discharge to a compartment, which is not taking into account in standard models. The CFD techniques may let to predict gas parameters in dependence of various conditions in a protected area. The investigations were carried out with software ANSYS Fluent 18.2, using Realizable k-ε model and SIMPLE algorithm. The numerical model was validated using experimental data. The subject of the study were standard and newly proposed inert gases. The results showed that adequate selection of input parameter let to simulate the gas discharge stage with high accuracy. The numerical results have a good agreement with the experimental results. The conclusions provide recommendations for the gas discharge prediction based on CFD technique.
Project of forming «culture and safety» of the airport
Authors: Ivanusa Andriy
Published: December 2018

Using the method analysis of the systems and synthesis parameters that influence on the process evacuation of people were certain. Methodological principles are used in relation to the management of people streams on the basis of the use critical path method, where the optimization synthesis of evacuation route people is considered as a topological chart of technological line, and an evacuation way is broken on separate parts. By means of probabilistic method and optimization synthesis of flexible technological lines topological case of users of airport streams frames are worked out and sometimes the evacuation. Conducted analysis of existent mathematical models, that describe motion streams of people on the objects of their mass stay showed that the stream users of the airport mutated and him mathematical description requires the synthesis of a few mathematical models. The method calculation time of evacuation users of the airport in that person informative base drawn on results other undertaken experimental studies is accordingly offered.
The use of multisimulation in determining fire hazards in buildings covered by expertise
Authors: Kubica Przemysław , Wdowiak Tomasz
Published: December 2018

The variety of architectural solutions of buildings and the multitude of purposes to which they will be used enforces the use of solutions not directly provided for in the law. To ensure an adequate level of safety are used replacement and substitution conditions. The currently functioning system of expert opinions is based on expert knowledge, which is often difficult to assess and gives divergent solutions for similar cases. Development of an objective and repeatable method of matching optimal solutions to the threat of fire is an area of current research in the field of fire safety engineering. The subject of the work covered the process of determining the scenarios causing the greatest threat while estimating the probability of its appearance. Using the multisimulation method - multiple simulations for a given object with determine variables is established the probability distribution of specific negative events. Variables are drawn based on distributions developed with statistical methods from historical data. The method is based on the known input data - British Standards and with keeping a sufficiently large number of draws gives reproducible results - probability distributions. In addition, the model can be expanded with new variables and adapted to atypical issues.
Work-related factors and depressive symptoms in firefighters - preliminary data
Authors: Konopko Magdalena , Jarosz Wojciech , Bienkowski Przemysław , Sienkiewicz-Jarosz Halina
Published: December 2018

Introduction: Firefighters participate in rescue activities with intense physical and psychological stress. The aim of the present study was to assess prevalence of depression and work-related stress in firefighters. Methods and findings: A questionnaire including items related to sociodemographic, health-related and work-related issues has been used. Depressive symptoms were assessed with PHQ-9 scale. Data were collected from 72 fire service workers (9 females). The mean age was 30.1±7.5 and 46.0±8.6 years for men and women respectively. 86.1% declared no chronic disease, 5.5% - hypertension and 4.2% - endocrine diseases. 62.5% were never smokers and 19.4% current smokers. 25% of the group declared drinking alcohol more than 2 times a week. More than 33.0% declared significant work-related stress. The main reasons were: lack of time to perform all activities (27.0%), low influence on work performance (15.3%), low pay (33%) and unequal treatment in the workplace (79.0%). Depressive symptoms were reported by 23%. Ten percent reported burnout symptoms and stress related to work. Conclusion: The occupational obligations and work-related stress may be responsible for the psychological problems experienced by firefighters.
Air flow Simulation in correlation of the Outside Engine Temperature Change with Variation of the Grill
Authors: Riza Rahmat , Puspaputra Paryana , Haryono Wajib
Published: December 2018

This research is objected to study the effect of air volume variation in the cooling process for the outer wall of vehicle engine. The results were expected to be consideration in Grill’s engineering process in term of better efficiency which is the discussion nowadays. The simulation was executed on a model rebuilt from a rough estimate of one of the existing urban vehicles in Indonesia. This model was performed in computational fluid dynamics software. Four condition of hole’s grill of the vehicle engine were prepared as the main parameters to experiment the air flow which would receive the heat from the outer wall of the engine. These parameters were study to investigate the outer wall temperature of the engine. The results showed that reducing 25% of hole’s area of the grill would increase temperature around 7.4%, the decreasing of 50% of the hole had made the increasing temperature around 28%. The last condition of the decreasing of 75% of the hole had caused the increasing temperature around 400%.
Performance Study on Solar Hybrid Air-Conditioning System for Residential Water Heating
Authors: Kaidir  , Mulyanef  , Burmawi
Published: December 2018

The Government of Indonesia has done some efforts to overcome energy crisis nationwide. Among them by issuing a policy as the Foundation for the development and improvement of the capacity of providing energy. The Government has issued a presidential instruction number 10 of the year 2005 on energy savings and last Presidential Instruction No. 2 of the year 2008 about saving energy and water. One of the implementation efforts of this energy crisis is overcome with effort saves energy consumption on the air conditioning with develop hybrids air conditioning, namely as the air conditioner at the same time to the water heating. This research is a new technology for energy saving of electricity. The purpose of this research is to produce a prototype of a hybrid energy efficient refrigeration machine that can be function simultaneously as the engine room air conditioner at the same time water heaters. Specific research targets to be achieved is the realization of a prototype of a hybrid air conditioning engine capacity 1.5 PK which can save energy around 60%. The method of research is the planning, creation, testing the performance of air conditioning machines of compression cycle steam hybrid.
Performance Experimental Study of Solar Still With Reflector To Produce Fresh Water and Salt
Authors: Mulyanef  , Duskiardi  , Sopian Kamaruzzaman , Kaidir  , Rahman Zulfika
Published: December 2018

This paper presents a study of experimental performance of solar still using reflector to produce fresh and salt water in the climate of Padang city, Indonesia. The solar collector is equipped with a reflector placed on the top of the cover with slope of 30º. Test results show that using reflector can increase temperature in the basin. Freshwater productivity also increases and speeds up time in producing salt. Average daily freshwater productivity increased by 16.8% during the testing period by adding reflector compared to solar still without reflector
Caracterization and Compressive Strength of Biocomposite Hydroxyapatite-Borosilicate with Hight Temperature Sintering
Authors: Burmawi  , Jamarun Novesar , Arief Syukri , Gunawarman
Published: December 2018

The use of Hydroxyapatite as bone graft material continues to increase. To utilize hydroxyapatite, it is often formed into biocomposite. The formation of hydroxyapatite biocomposite intended to address the fragile hydroxyapatite weaknesses. The added element in the formation of this biocomposite is borosilicate. Mixing of this material is arranged with certain composition using ball miling. To form a test specimen, it was printed with compacting force of 5 KN, 15 KN and 25 KN. Test results Compressive Strength.and XRD showed that addition of borosilicate did not change the compound that is hydroxyapatite, but the intensity of hydroxyapatite tends to decrease with addition of borosilicate amount, this is corroborated by FTIR testing. For visible compressive strength, the maximum value occurs at 75: 25 compositions, ie 45 MPa, 42.9 MPa and 52.3 MPa. This suggests that the addition of borosilicate in biocomposite formation does not alter hydroxyapatite compound and can generally increase the compressive strength and modulus of elasticity to 25% wt% borosilicate addition.
Experimental Investigation of Vibration Response of a Flexible Coupler In a Four Bar Mechanism Due to Varying Crank Length and Crank Speed
Authors: Arman Rizky , Isra Mahyuddin Andi , Marthiana Wenny , Satria Iman
Published: December 2018

Effort to increase productivity calls for increasingly higher operating speed. Consequently, many part of a machinery are made as light as possible to avoid the detrimental inertial effects. This condition means several of the elements are no longer rigid and tend to experience elastic deformation in operation. The existence of the deformation yields element possessing position dependent dynamic parameters. Mechanisms with time-varying parameter have a phenomenon known as parametric instability where the mechanism could becomes dynamically unstable at several frequency bands, even at relatively low excitation frequency. This research investigates the dynamic behaviour of a flexible coupler on an experimental four-bar mechanism setup. The study examines the coupler vibration response due to varying crank length and crank speed.
Grid Study of Mini Hydro Power Plant (MHPP) of Palangai Hulu 2x4,9 MW South Pesisir
Authors: Hidayat  , Cahayahati  , Arnita  , Jamaan Saiful
Published: December 2018

This paper presents a gridd study of Mini Hydro Power Generation (MHPP) of Palangai Hulu, 2 x 4.9 MW. It is owned by PT. Dempo Sumber Energi (DSE) located at Palangai of South Pesisir Regency. The objective is to fulfill the legal aspects, technical aspects and economic aspects to develop of MHPP. The legal aspect is one of the requirements that must be fulfilled prior to the signing of Power Purchase Agreement (PPA) between DSE and State Electricity Company that called PLN. Technical aspect is to analyze the operational impact of the distribution system after MHPP connecting to the PLN distribution system, while the economic aspect is to analyze how much result energy of MHPP can be absorbed by PLN. Uultimately, it is described the financial feasibility of MHPP. The result is, legal aspect of development of MHPP of Palangai Hulu feasible to be continued to next process to sign contract of PPA. Technically, there is no negative impact of operating the PLN distribution system after the MHPP is connected to the PLN Rayon Balai Selasa system that analyzes using ETAP. Point of Connection (POC) as the selling point of electrical energy by DSE to the most economical PLN is on substation circuit of Balai Selasa. The energy production of MHPP Palangai Hulu can be absorbed 96.4% starting in 2018. The cost of POC is Rp. 11,577,000,000.
Designing Improvement of Procurement Business Process Reengineering Approach : A Study Case of Insurance Company
Authors: Masayu Almira Rhea , Dachyar M.
Published: December 2018

Streamlining procurement process is one of the strategies to reduce cost of a company, especially in the insurance industry. This research aims to propose design improvement of procurement process in insurance company by implementing Business Process Reengineering (BPR) method. Data collection regarding procurement process was collected in one of life insurance company in Indonesia. This research uses BPR method which consist of three steps namely mapping as-is process, analyze as-is process, and modeling to-be process. Mapping as-is process using iGrafx standard Business Process Modeling and Notation (BPMN). Analyze as-is process by its process time to indicate problems. Modeling process to-be by using BPR best practices that will be prioritized using AHP method and selected using pareto analysis. Scenarios for to-be process then created based on the selected best practices, that will be inputed into the simulation model iGrafx standard BPMN. This research produces three scenarios of to-be process for procurement in Indonesian insurance company that reduce 35-76% of the process time compared to as-is process.
Scheduling for Indonesia’s Aircraft Wing Structure Design Project with Critical Path Method and Resource-Constrained Project Scheduling
Authors: Hidayat Melissa Putri , Dachyar M. , Farizal
Published: December 2018

As an archipelagic country, Indonesia has high needs for its aviation development. About 270 million people are predicted to fly from and within Indonesia in 2034, which is three times larger than current market conditions. Due to the complexity of aircraft development projects, management of a well-designed Indonesian aircraft design project needs to be implemented. This research aims to analyze the scheduling of aircraft wing structure design project made in Indonesia. Critical Path Method (CPM) and Resource-Constrained Project Scheduling (RCPS) are used to get better scheduling with a shorter duration to complete the project. Results from resource allocation using RCPS can yield a shorter project duration (730 working days) compared to the company’s normal resource allocation (950 working days).
Scheduling of Empennage Structure Design Project of Indonesia’s Aircraft with Critical Path Method (CPM)
Authors: Wulandari Arin , Dachyar M. , Farizal
Published: December 2018

Production of the aircraft becomes very important to facilitate many passengers of aircraft in Indonesia in the future. The design of a very complex aircraft requires proper project management. This study aims to perform the best scheduling project of empennage structure design of Indonesia’s aircraft with limited resources. Critical Path Method (CPM) is used to schedule the project based on activity and resource. CPM scheduling results in completion time for activity data for 400 working days. CPM scheduling after assigning human resources results in a longer completion time for 1023.47 working days. CPM scheduling is carried out by reallocating of human resources to produce a shorter completion time, and it results in completion time for 955 working days.
Implementation of Risk Management in Manufacturing of Wellhead and Christmas Tree Equipment (Risk management framework)
Authors: Hamid Abdul , Baba Ishak Bin , Hasan Sulaiman Bin Haji , Darmawan Agung Setyo , Nushatisah
Published: December 2018

Wellheads and Christmas trees are the main equipment for oil production. They are manufactured in the plant and installed on the casing head to seal the annular space between casing and tubing. They are used to transport oil to pipeline in well field. The loss of wellhead and Christmas tree integrity can result in major accidents, presenting a severe risk to the environment. Therefor a purpose of this study is to investigate of an organization perception for risk management implementation in manufacturing wellhead and Christmas tree equipment. The responses were analysed using SPSS software by using Cronbach’s α, mean-value and standard deviation. Data was collected by posting a Google link form, or sent to the email of the companies listed in the Malaysia and Batam, Indonesia. This quantification of the risk management process and a risk identification tool onto the risk management process framework. The model can support and indicate the contribution of an industrial risk manager towards achieving project objectives, as well as making comprehensive decisions regarding analysis of risk management in manufacturing project and operation.
Product Distribution Optimization in Food SMEs with Integer Linear Programming
Authors: Widiyanti Syafira Chika , Dachyar M. , Farizal
Published: December 2018

Efficient product distribution is a key driver of the overall profitability of a company. The high cost of product distribution in food SMEs is caused by the absence of a proper distribution cost calculation to obtain optimal distribution decisions. This research aims to provide SMEs with a product distribution model with the lowest cost. A Heterogenous Fleet Vehicle Routing Problem (HVRP) for SMEs product distribution is modeled in the form of Integer Linear Programming and solved using branch-and-bound algorithm to obtain an optimal route and vehicle assignment with the lowest cost. The result of this research is a model that can be used by SMEs to make daily product distribution decision.
Optimization of Production Planning Using Goal Programming Approach at Chocolate Factory
Authors: Noviyarsi  , Setiawati Lestari , Arisya Arhamna
Published: December 2018

Company X is a mini chocolate factory in West Sumatera Province. The Company produces three types of product, that is paralin chocolate, bar chocolate 75 gr and bar chocolate 20 gr. Today, production planning only based on customer demand without any analysis an optimized amount of production to maximize profit. The purposed of this research was the optimization of production planning to maximize company profit. Goal programming approach was used in this research. There were four goals that need to optimize, that are, production volume, profit, processing time and raw material. Horizon plan was set up for six periods. LINDO software was used to compute an optimized result of goal programming. The final result shows an average of production amount for six periods, that were paralin chocolate about 65,95 kg, bar chocolate 75 gr about 883 bars and bar chocolate 20 gr about 3725 bars with maximum profit about Rp. 17.806.782,-
Scale Up Production Indonesian Liquid Propolis From Raw Propolis and Wild Beehive Using Bubbling Vacuum Evaporator
Authors: Sahlan Muhamad , Akhmariadi Andhika , Pratami Diah Kartika , Hermansyah Heri , Wijanarko Anondho
Published: December 2018

The process of production propolis on a laboratory scale using a rotary evaporator with capacity one liter of ethanol extract propolis include propylene glycol as solvent medium. Ethanol is evaporated at a temperature of 65°C and reduced water content at 80°C. For the quantity of products can be increased by increasing the capacity of the ethanol extract of propolis and the medium while solvent evaporation to 12 liters and modify the rotary system with a bubbling system (bubbling vacuum evaporator). Then the solvent medium used was replaced with glycerol. The result of 8.02 kg of raw propolis produced 10.85 liters with the average of total flavonoid content 914.8 mg/l, while for 8 kg of raw material forest beehive produced 7.65 liters with the average of total flavonoid content 307.2 mg/l. With the capacity production average reaches one liter per day. The resulting product by organoleptically sweet taste, no smell and distinctive of saliva and the color of the product are brown.
Chitin and Chitosan from Green Shell (Perna Viridis): Utilization Fisheries Wastes from Traditional Market in Jakarta
Authors: Firdaus Flora Elvistia , Purnamasari Indah , Gunatama Pandu
Published: December 2018

Many advantages of burden wastes which adversely impact to the environment in the form of solid waste. Green shellfish wastes are used for resources of chitosan. The aim of this works is to identify the effectiveness of chitosan application into 2 kinds of moist foods; wet noodles and meatballs. The concentration of chitosan are 0%, 0.5%, 1%, 1.5%, and 2%. The samples are immersed for 0,15, 30, 45, and 60 minutes. The study has found the water content of chitin is 8.31% and chitosan is 6.83%. The degree of deacetylation of chitin is 37.81% and chitosan is 82%. The best concentration of chitosan for wet noodle is 1.5% -2% with the immersion of 45 -60 minutes, and for meatballs is 1.5%-2% with the immersion of 15 minutes. The organoleptic test, on day-3 noodle and meatball, is still in good condition. If no chitosan added the noodles sample is day-1 is in fair condition, while meatball should be consumed directly because in day-1 is becoming chewy with a sour taste, and on day-2 are overgrown with mushrooms.
The Effectiveness Biosorption of Durian (Durio zibhetinus) Rind Pectin on Handling Liquid Waste Containing Heavy Metal (Pb II)
Authors: Firdaus Flora Elvistia , Redella Amida , Nursabila Sintani
Published: December 2018

Heavy metal is one of the most substances occur in water pollutants. It is harmful to humans and other living things. The biosorption of pectin from durian rind is used as a heavy metal binder. However, the type of pectin presented in organic waste is generally HMP (High Methoxyl Pectin), which previously should be demethylation. Durian rind used in this study are originated from Bogor West Java. This study aims to determine the effectiveness of pectin biosorbent in reducing the concentration of heavy metal (Pb II). Pectin extraction was carried out at 80 °C within a time variation of 1; 5; and 6 hours. The results showed that the most optimum pectin is with 6 hours of extraction time where the methoxyl content is 3.46%; weight equivalent 3860 % galacturonate content; the degree of esterification 20.29%; and lead (Pb II) uptake 97%. While durian seeds do not contain pectin.
The Production of Bioethanol from Rimau Gerga Lebong (Rgl) Orange Waste as an Alternative Energy
Authors: Darliyasi Vike , Dewi Kurnia Herlina , Budiyanto
Published: December 2018

Bioethanol from Rimau Gerga Lebong (RGL) orange waste is one of the solution to overcome fuel oil problem. The aim of this research is to get the type of microorganisms and fermentation time that produce the highest ethanol from RGL orange waste. The research method used was Randomized Block Design (RBD) of two factors, namely type of microorganisms (Trichoderma viride, Saccharomyces cerevisiae, and Trichoderma viride + Saccharomyces cerevisiae) and fermentation time (3 days, 5 days, and 7 days. Within the three type of microorganisms with variations of fermentation time showed that the pH was able to carry out the fermentation process smoothly. The highest total dissolved solids were in the type of Trichoderma viride 3 days and 5 days, and the type of mix of microorganisms on the 3rd day. The highest ethanol content is in the type of Sachharomyces cerevisiae for 7 days. ANOVA result showed that the interaction between two treatments on the total dissolved solids experienced significant differences, so it continue with the DMRT test at a significant level of 0.5%. However, it is different from the results of ANOVA on ethanol content which showed that there were significant differences between ethanol content and types of microorganisms, but there was no significant difference on fermentation time
Non-Ionizing Radiation (NIR) Exposure Map Development Using GIS for Gong Badak, Terengganu, Malaysia
Authors: Hazmin S.N. , Dianah A.R.S.N. , Kamarudin M.K.A. , Umar R. , Syafiqah H.N.
Published: December 2018

Public Non-Ionizing Radiation (NIR) exposure should be monitored by the government since it has proven harmful for human. Even though some studies reported that low frequency spectrum is safe, the other says that long and repetitive exposure may affect health. Thus, this study is conducted to measure the ambient NIR exposure value in the selected Terengganu area, Malaysia. The values were then used to develop a spatial model of exposure to see the radiation exposure pattern. From the findings, we found that the value was higher nearby base stations which are normally erected around residential area where the telecommunication network user is high. Thus, this study is crucial to determine the level of exposure for future plan. This findings can be used by the government to control the radio-frequency transmission and active spectrum service provider in order to limit the radiation exposure for public health concern.
E-census Implementation: A Case study in Naikoten II, Kupang, Indonesia
Authors: Dewi Lily Puspa , Wibowo Adi , Immanuel Ngakan M.A.
Published: December 2018

Growth in human population around the world affects all people through its impact on the economy and environment. Therefore, the population in a region should always be recorded. Government as a public decision maker has a big responsibility in the welfare of the community. The government needs information about the people lives to determine what policies should be taken. Government needs census data accurately to assist in making decisions. The government of Naikoten II wants to bring this village become digital village using technologies in their public services. In Naikoten II, the population data collection process (census) still uses paper form using Canvaser method which is filled in by the census officer by visiting and interviewing residents directly. It has a big risk of data loss. The main objective of this research was to provide a viable solution that allows surveyors to conduct the census efficiently. This research also provides a web based application to help data analyst to manage the census data. These application have been designed and implemented. The testing has been conducted within the small group of stakeholder that volunteered to use this early version of the application for a specified amount of time to provide feedback for possible changes and improvements.
A block-queue based optimization method for composite structures blended with multiple templates
Authors: Zeng Jiani , Wu Wenbo , Huang Zhengdong , Fan Kuan
Published: December 2018

Maintaining the continuity (blending) of stacking sequences is very vital when the stacking sequences of a multi-region panel is being optimized. The traditional attempt simplifies the difficulty of the blending problem by designing the whole panel based on one stacking template. However, this simplification adds an unnecessary constraint that regions with the same thickness should have the same stacking sequence. In order to overcome the drawback, this paper introduces a region block queue based method to obtain the optimal manufacturable stacking sequences of composite laminates blended from multiple stacking templates. The method discussed here groups regions into blocks, forming a block queue, and designs the entire laminate panel with multiple stacking templates, which are respectively applied to different blocks. The continuity between two adjacent blocks is guaranteed by sequentially rebuilding the template of a block from the sequences of adjacent regions within its previous block in the queue. An 18-region benchmark problem is chosen to prove the effectiveness of the proposed method, and the solution obtained is 0.27kg lighter than the traditional template-based method. The reduction of mass reveals that the use of multiple templates does contribute to searching for lighter solution.
Security wire mesh weaving process modelling with artificial neural network
Authors: Wongwan Kridsada , Laosiritaworn Wimalin
Published: December 2018

This paper investigates weaving process in the production of security woven wire mesh. Weaving is a critical process of the entire production as the quality of the final product depends very much on this process. High defect rate and low production yield is now a major concern in the production. There has been no prior study of the relationship among variables such as inspection data and machine setting on production yield. Conducting experiments to investigate this relationship is not reasonable in this case, as the product targeted at premium market and scrap cost is very high. In order to investigate the effect of these parameters, artificial neural network (ANN) was applied to model the process with data from the company databases. The type of ANN used in this research was the multi-layer neural network trained with back-propagation algorithm. The results suggested that ANN can effectively be used to predict weaving process production yield. The use of ANN proposed in this research is not limit to only weaving process, but can be applied to other manufacturing process.
Tool path generation for sculptured surfaces with 4-axis machining
Authors: Garcia A , Cuan-Urquizo E , Roman-Flores A , Vazquez E
Published: December 2018

Sculpted surfaces are widely used in engineering applications in industries like aerospace, automotive and medical. Commonly, these types of surfaces are manufactured by the process of 5-axis CNC machining. 5-axis machining improves the effectiveness and reduction in machining times compared to the 3-axis process, but also increases the complexity of the operations. This paper presents a four-axis toolpath generation gouging free methodology as an alternative to the five-axis machining to reduce the complexity of the process, maintaining similar benefits respect to conventional three-axis machining. Rolling ball method is first applied to compute the most suitable tool for the surface and prevent gouging. A process procedure is the carried out to optimize the tool fixed position and compute tool location at each cutter contact point of the surface. The results show the effectiveness of the method in terms of reducing machining time and maintaining similar surface finishing compared with three-axis machining. The method can be used as a cost-effective option for multi-axis machining.
Efficient Path Planning of Secondary Additive Manufacturing Operations
Authors: McQueen Keimargeo , Darensbourg Sara , Moore Carl , Dickens Tarik , Allen Clement
Published: December 2018

We have designed a path planner for an additive manufacturing (AM) prototype that consists of two robotic arms which collaborate on a single part. Theoretically, with two nozzle equipped arms, a part can be 3D printed twice as fast. Moreover, equipping the second robot with a machining tool enables the completion of secondary operations like hole reaming or surface milling before the printing is finished. With two arms in the part space care must be taken to ensure that the arms collaborate intelligently; in particular, tasks must be planned so that the robots do not collide. This paper discusses the development of a robot path planner to efficiently print segments with two arms, while maintaining a safe distance between them. A solution to the travelling salesman problem, an optimal path planning problem, was used to successfully determine the robots path plans while a simple nozzle-to-nozzle distance calculation was added to represent avoiding robot-to-robot collisions. As a result, in simulation, the average part completion time was reduced by 45% over the single nozzle case. Importantly, the algorithm can theoretically be run on n-robots, so time reduction possibilities are large.
Cancer
Authors: Jordan Bertrand
Published: December 2018

A recent paper shows that cancer patients using complementary therapies in addition to conventional treatment have distinctly worse outcomes. Analysis of the data shows that they are much more likely to refuse one component of conventional treatment: this explains the negative effects of recourse to complementary approaches and underlines the need for great caution in approving their use while ensuring correct adherence to the anti-tumour treatment.
Leucémies à mégacaryoblastes de l’enfant
Authors: Lopez Cécile K. , Mercher Thomas
Published: December 2018

Les leucémies aiguës mégacaryoblastiques de l’enfant (ou LAM7) sont généralement associées à un mauvais pronostic et à l’expression d’oncogènes de fusion impliquant des régulateurs transcriptionnels. Des résultats récents indiquent que la fusion ETO2-GLIS2 altère l’activité de régions régulatrices de l’expression génique appelées « enhancers » et l’expression des facteurs GATA et ETS, essentiels au développement des cellules souches hématopoïétiques. Une dérégulation de l’équilibre GATA/ETS est également retrouvée dans d’autres sous-groupes de LAM7. Cette revue porte sur les bases transcriptionnelles de la transformation survenant dans les LAM7 de l’enfant et les perspectives thérapeutiques que cela ouvre.
Empowerment of Small Medium Enterprises through Student Participatory Action Research in Implementation of Accounting Information System
Authors: Widjaja Alexandra , Matitaputty Shandy
Published: December 2018

Small Medium Enterprises (SMEs) as a vast growing industry are inhibited by its lack of resources, such as capital funding, skill, and technology. It leads to the lack of business information, which is important to be used in decision making process. Accounting Information System (AIS) will enhance their business information’s availability and reliability. SMEs need to be supported on designing their AIS. This article aims to propose a learning model in AIS course that could affect both students and community through a project based learning. Project based learning model will enhance, not only student’s cognitive ability, but also give them the opportunity to empower their community. This study is expected to help the student becomes both cognitive and affective excellence under-graduate. This study was conducted using a participatory action research which is a collaborative research that equitably involves all partners. The subject of this research is students of Accounting Information System course, Faculty Economics and Business, Soegijapranata Catholic University, Semarang, and the targeted community, which is small medium enterprises in Semarang. This research is conducted through four phases, i.e (i) observation; (ii) Analyzation and Design Planning; (iii) Actuating; and (iv) Evaluation and Monitoring.
HIV/AIDS Awareness Campaign through Sports in Yangon: The Pioneering Service-Learning Program of Dagon University, Myanmar
Authors: Tun Aye Aye , Del Carmen Allen V.
Published: December 2018

Rapid sports programs and activities have served as an avenue to unify people of diverse backgrounds and persuasions. More than promoting national or local pride and contributing to friendship, sportsmanship and social unity, sports also serves as a tool to popularize certain advocacies. Dagon University in Myanmar took advantage of this value of sports when it implemented “Playing Football, Learning HIV AIDS”, ―A Football for Development” program, a pioneering Service-Learning Program focused on utilizing football training activities as a tool for social action through HIV/AIDS information and education campaign for school children in 2015. In a country where about 220 000 people are living with HIV/AIDS, including 77 000 women, sports can be used for social action to increase awareness. This paper looks into the pioneering effort of the university and how sport for social action can be expanded to further promote peace and development.
The Benefits and Constraints of Service Learning on Typography Class: Street Vendors’ Banner Design Project
Authors: Yuwono Elisabeth Christine , Damajanti Maria Nala
Published: December 2018

Typography subject focuses on exploring typefaces using typical software and applying it to an artwork, such as a poster, advertisement, etc. In 2016, Typography 2 applied service-learning for the first time. Students were divided into several groups to make banners for street vendors in Surabaya city. This paper aims to determine the benefits obtained by participants of Typography 2 with the service-learning. In addition, to know the constraints faced as an evaluation of service-learning implementation. This study used qualitative methods, by collecting data from students' reflection on Typography 2 service learning project. The students' reflection consists of the learning they get and the obstacles or constraints. The results from service-learning implementation show many benefits are obtained, both in terms of academic and non-academic. It seems that non-academic benefits reveal more than academic benefits. Obstacles and constraints also faced during the implementation can be a meaningful input for service-learning implementation in the future. Implementation of service-learning in Typography class provides the different type and enriches case study in design subject. It also provides an assertion that service-learning as a method of learning is very good and can be applied in courses or other subject areas.
The Role of Service Learning in a ‘Future University’
Authors: Chang Jekuk
Published: December 2018

In 2016, Dongseo University announced its vision of becoming a „Future University‟ in connection with a detailed plan involving ten changes for achieving that goal. This paper outlines the importance of service learning in the development path of Dongseo University. It begins with the university‟s early history, where service learning figured prominently as a founding principle. It then presents a specific example of a service learning program that has been successfully operated by Dongseo University and Petra Christian University for roughly 20 yr, namely the International Tech Corps. Next, the paper examines four potentially harmful societal trends and suggests ways they might be counterbalanced through innovative higher education. Finally, it provides an overview of some relevant aspects of Dongseo‟s vision of a Future University, including the role of service learning within that paradigm shift in the provision of higher education.
From Unity to Harmony in Diverse World through Global Service-Learning: A Case Study from Korea
Authors: Ryu Sookyoung , Kim Youngwoo
Published: December 2018

The purpose of this study is to explore the effect on the development of participant students through Global Service-Learning (GS-L) as global citizens in this diverse world. In multi-cultural and multi-racial contries people has good ways to live in harmony with others different. In Korea, they live in unity with one rational background and with the only one language. The GS-L in Malaysia allowed nine Korean students to have more involved in Malaysian real lives through homestay and cultural exchange program. This cultural exchange program contributed to the better global citizenship education which is considered very important in this global village, adding another exotic nutrient to Korean substantial culture. The experiences in Malaysia enable students to find ways to solve various problems and conflicts with differences as Korea is becoming more and more multi-cultural society.
Community Engagement Practice through Service-Learning in Public Relations Class
Authors: Vidyarini Titi Nur , Sari Yustisia Ditya
Published: December 2018

This article explores the concept of corporate social responsibility in conjunction with the service-learning method. The focus of the exploration is a corporate social responsibility class which took place in Simokerto sub-village in Surabaya, Indonesia. The researcher used secondary analysis of the relevant documents from the Service-Learning program. The collaboration between the university's department of communication science, the World Vision Indonesia (WVI) Urban Surabaya that acted as the facilitator and provider of community and the students as the agents of service learning was enabled with an objective of the application of theories, an increased students' comprehension and benefits for the community itself. The findings of the research were highlighted in three aspects, first, the theories applied in the boundaries of the community's condition, having said that service-learning is a suitable method to cultivate the concept of CSR to Public Relations students. Second, the students experienced an increased comprehension from the active application of their knowledge and a changed in perception about others. Third, the active acceptance from the community and the role of the NGO enabled an uneventful service-learning program.
Unsettling antibiosis: how might interdisciplinary researchers generate a feeling for the microbiome and to what effect?
Authors: Greenhough Beth , Dwyer Andrew , Grenyer Richard , Hodgetts Timothy , McLeod Carmen , Lorimer Jamie
Published: December 2018

Decades of active public health messaging about the dangers of pathogenic microbes has led to a Western society dominated by an antibiotic worldview; however recent scientific and social interest in the microbiome suggests an emerging counter-current of more probiotic sentiments. Such stirrings are supported by cultural curiosity around the ‘hygiene hypothesis’, or the idea it is possible to be ‘too clean’ and a certain amount of microbial exposure is essential for health. These trends resonate with the ways in which scientists too have adopted a more ‘ecological’ perspective on the microbiome. Advances in sequencing technologies and decreasing costs have allowed researchers to more rapidly explore the abundance and diversity of microbial life. This paper seeks to expand on such probiotic tendencies by proposing an interdisciplinary methodology researchers might use to generate more-than-antibiotic relations between lay participants and their domestic microbiome. The paper draws on findings from an ESRC-funded study, Good Germs, Bad Germs: Mapping microbial life in the kitchen (grant number ES/N006968/1), which sought to: (i) explore human-microbe relations in the domestic kitchen; and (ii) make scientific techniques for visualising the domestic microbiome available to non-expert publics through a form of ‘participatory metagenomics’. We examine how scientific knowledge and techniques are enroled into lay practices of making microbes sensible; how these intersect with, reinforce or disrupt previous feelings for microorganisms; and how new ways of relating with microbial others emerge. In reflecting on these findings we draw on work in animal geographies, environmental humanities and the social science of the microbiome. We examine how cultural, emotional and embodied responses to nonhuman others—their ability to affect ‘us’ humans—have implications for the ways in which public health authorities, researchers and ‘lay’ publics alike seek to engage with and govern nonhuman life. We argue that understanding and potentially generating different modes of relating to microbes—a feeling for the microbiome—offers opportunities for reconfiguring microbiopolitics and intervening into the ways in which publics respond to perceived microbial opportunities and threats.
Mutual benefit achieved by combining ultralow-field magnetic resonance and hyperpolarizing techniques
Authors: Buckenmaier Kai , Rudolph Matthias , Fehling Paul , Steffen Theodor , Back Christoph , Bernard Rebekka , Pohmann Rolf , Bernarding Johannes , Kleiner Reinhold , Koelle Dieter , Plaumann Markus , Scheffler Klaus
Published: December 2018

Ultralow-field (ULF) nuclear magnetic resonance spectroscopy (MRS) and magnetic resonance imaging (MRI) are promising spectroscopy and imaging methods allowing for, e.g., the simultaneous detection of multiple nuclei or imaging in the vicinity of metals. To overcome the inherently low signal-to-noise ratio that usually hampers a wider application, we present an alternative approach to prepolarized ULF MRS employing hyperpolarization techniques like signal amplification by reversible exchange (SABRE) or Overhauser dynamic nuclear polarization (ODNP). Both techniques allow continuous hyperpolarization of 1H as well as other MR-active nuclei. For the implementation, a superconducting quantum interference device (SQUID)-based ULF MRS/MRI detection scheme was constructed. Due to the very low intrinsic noise level, SQUIDs are superior to conventional Faraday detection coils at ULFs. Additionally, the broadband characteristics of SQUIDs enable them to simultaneously detect the MR signal of different nuclei such as 13C, 19F, or 1H. Since SQUIDs detect the MR signal directly, they are an ideal tool for a quantitative investigation of hyperpolarization techniques such as SABRE or ODNP.