2018 4th International Conference on Science and Technology (ICST)最新文献

Blade Depth Investigation on Cross-flow Turbine by Numerical Method 横流涡轮叶片深度的数值研究

2018 4th International Conference on Science and Technology (ICST) Pub Date : 2018-11-08 DOI: 10.1109/ICSTC.2018.8528291

D. Adanta, Richiditya Hindami, Budiarso, Warjito, A. I. Siswantara

{"title":"Blade Depth Investigation on Cross-flow Turbine by Numerical Method","authors":"D. Adanta, Richiditya Hindami, Budiarso, Warjito, A. I. Siswantara","doi":"10.1109/ICSTC.2018.8528291","DOIUrl":"https://doi.org/10.1109/ICSTC.2018.8528291","url":null,"abstract":"In 2016, more than 1060 million people in the world lived in areas that are difficult to access, causing insufficient access to electricity. To overcome the problem, a pico hydro cross-flow turbine is considered to be a proper solution because it has a simple design, has few civil works, is easy to maintain, and can operate at a medium head with high variation of discharge. To increase the turbine's performance, this study aims to find the effect of blade depth on performance and to investigate the possibility of a cross-flow turbine being a reaction turbine. The CFD method was selected because it can represent the flow pattern in a turbine with more detail than other methods. The blade depth variation in this study consists of 0 mm, 3 mm, 6 mm and 9 mm, and the pressure inlet boundary conditions are varied with heads of 2.7 m and 5 m. The model turbulence RNG k-є standard has been used to predict turbulent flow. From the 2.7 m head, the average efficiency with the ratio U/V 0.42-0.5 produced by blade depth are: 0 mm is 41.9%, 3 mm is 45.8%, 6 mm is 34.4% and 9 mm is 36.7%. Meanwhile, the variations from the 5 m head are: 0 mm is 49.8%, 3 mm is 57.3%, 6 mm is 53.7% and 9 mm is 49.6%. A two-factor ANOVA without replication was performed to determine the relationship of blade depth to performance, and the results showed there is an effect because the F-critical was higher than F. In addition, the blade does not entirely convert the water's kinetic energy to power. Thus, the reaction turbine concept cannot be used in cross-flow turbines because there is no lift force produced by any blade in the two conditions.","PeriodicalId":196768,"journal":{"name":"2018 4th International Conference on Science and Technology (ICST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134126098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

A Proposed Model for Aligning Maintenance Strategy to Business Strategies in Engineering Asset Management 工程资产管理中维护策略与业务策略的匹配模型

2018 4th International Conference on Science and Technology (ICST) Pub Date : 2018-08-01 DOI: 10.1109/ICSTC.2018.8528659

Cahyo, Winda Nur

{"title":"A Proposed Model for Aligning Maintenance Strategy to Business Strategies in Engineering Asset Management","authors":"Cahyo, Winda Nur","doi":"10.1109/ICSTC.2018.8528659","DOIUrl":"https://doi.org/10.1109/ICSTC.2018.8528659","url":null,"abstract":"A well-managed maintenance system may provide a competitive advantage for the business. To get to this point, the business must treat maintenance as one of its strategic partner instead of seeing maintenance from a traditional perspective. Many businesses have difficulties on initiating this process. This paper proposes a preliminary guideline for business, researchers, and practitioners in the area of maintenance and asset management to start this challenging process. The main idea of the guideline is that the business should align the strategy of its maintenance department to comply with the business strategy. The evolution of maintenance function is also presented in this paper so it can be used by the business to benchmark the position of their maintenance department to the recent perspective. There are two suggested steps in the guideline: (1) implementation of asset management system, and (2) to develop a clear model understandable by all personnel in the organization about how the maintenance strategy can be aligned to the business strategy and how their work can contribute to this process. For the second step, the system matrix is proposed in this paper.","PeriodicalId":196768,"journal":{"name":"2018 4th International Conference on Science and Technology (ICST)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115708982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Basic Analysis of Logistics Cost for Indonesian Fishery Commodities 印尼渔业商品物流成本基本分析

2018 4th International Conference on Science and Technology (ICST) Pub Date : 2018-08-01 DOI: 10.1109/ICSTC.2018.8528693

K. H. Widodo, Teny Sylyia

{"title":"Basic Analysis of Logistics Cost for Indonesian Fishery Commodities","authors":"K. H. Widodo, Teny Sylyia","doi":"10.1109/ICSTC.2018.8528693","DOIUrl":"https://doi.org/10.1109/ICSTC.2018.8528693","url":null,"abstract":"Fisheries commodities are categorized as high perishables products, therefore these products need a specific handling to keep the quality until delivered to processing industries or used by end consumer. For this we need a logistics and supply chain approach to manage the products flow and cost and information as well. We consider integrated logistics activities along the supply chain so that the fisheries commodities reach the destination on the right time, on the right quality and on the right quantity. These logistics activities, however, will be a trigger of cost and will be a contributor of products price. Therefore we need analysis of fisheries logistics cost to measure the proportion of logistics cost so that we could obtain an appropriate solution for minimizing the cost. In this paper we identify a basic fisheries logistics cost in Indonesia by using a systematic review. Based on the result, we conclude that there are two kinds of logistics models, i.e. wild fisheries dan aquaculture. These two models have different supply chain pattern of commodities flow, cost and financial flow and information flow as well. Besides, as a result the proportion of logistics cost for every tier along the chain is different.","PeriodicalId":196768,"journal":{"name":"2018 4th International Conference on Science and Technology (ICST)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116882891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Requirements Analysis of Elisa Business Architecture with Education Enterprise Architecture Perspective 教育企业架构视角下Elisa业务架构需求分析

2018 4th International Conference on Science and Technology (ICST) Pub Date : 2018-08-01 DOI: 10.1109/ICSTC.2018.8528701

Gunadi Emmanuel, S. Kusumawardani, R. Ferdiana

{"title":"The Requirements Analysis of Elisa Business Architecture with Education Enterprise Architecture Perspective","authors":"Gunadi Emmanuel, S. Kusumawardani, R. Ferdiana","doi":"10.1109/ICSTC.2018.8528701","DOIUrl":"https://doi.org/10.1109/ICSTC.2018.8528701","url":null,"abstract":"The rapid development of information and communication technology provides many changes in the implementation of eLearning. Now, the model of collaborative learning business process becomes the implementation orientation of eLearning. Changes in the orientation of business processes also affect the business architecture. In an educational institution, eLearning business process design needs to involve elements of the institution's internal resources. It aims to anticipate the development of ICT, support the achievement of educational institution goals, and accommodate the diversity of student learning needs. This research proposes perspective of Education Enterprise Architecture (EEA) business architecture to analyze the needs of eLisa business architecture design, Universitas Gadjah Mada. Describing the design of eLisa learning process currently using modeling process data flow diagrams and use case diagrams. Process modeling analysis uses the comparison of instructional processes of eLisa learning with the instructional process of the EEA business architecture. From the comparison of the current eLisa learning process with the EEA instructional process it is evident that the development of the eLisa learning process model requires the involvement of the Directorate of Education and Teaching, Directorate of Research, Directorate of Business Development and Incubation, Directorate of Community Services, Publishers and Publications Board, Library, and Centre for Innovation and Academic Policy.","PeriodicalId":196768,"journal":{"name":"2018 4th International Conference on Science and Technology (ICST)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127436432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Linear Oscillation Diagnosis of Process Variable in Control Loop Based on Variational Mode Decomposition 基于变分模态分解的控制回路过程变量线性振荡诊断

2018 4th International Conference on Science and Technology (ICST) Pub Date : 2018-08-01 DOI: 10.1109/ICSTC.2018.8528654

Gilang Raka Rayuda Dewa, Awang N. I. Wardana, S. Hawibowo

{"title":"Linear Oscillation Diagnosis of Process Variable in Control Loop Based on Variational Mode Decomposition","authors":"Gilang Raka Rayuda Dewa, Awang N. I. Wardana, S. Hawibowo","doi":"10.1109/ICSTC.2018.8528654","DOIUrl":"https://doi.org/10.1109/ICSTC.2018.8528654","url":null,"abstract":"Controller tuning fall and harmonic external disturbances are big problems in industrial automation and control systems. One of the indicators that represents the problems is the presence of linear oscillations in the process variables. Diagnosis of linear oscillations in the process variables becomes an important step before increasing performance of control loops. On the other hand, the industry is being stretched towards Industry 4.0 era. The evolution of industry has had a significant impact on various aspects including the diagnosis of linear oscillations. Diagnosis of linear oscillations which were originally intended only to find out the presence of linear oscillations changed to a diagnosis method with the Industry 4.0 paradigms. This paper presents a diagnosis method for linear oscillation of process variable in a control loop based on variational mode decomposition. The proposed method will be implemented on a set of industry data to provide validation. The results prove that the proposed method can diagnose the multiple linear oscillation of process variable into 3 (three) different problems, i.e. controller tuning fall, harmonic external disturbances and nonlinear oscillation.","PeriodicalId":196768,"journal":{"name":"2018 4th International Conference on Science and Technology (ICST)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125386536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Satellite-based Estimation of Above Ground Carbon Stock Estimation for Rubber Plantation in Tembir Salatiga Central Java 基于卫星的中爪哇Tembir Salatiga橡胶林地上碳储量估算

2018 4th International Conference on Science and Technology (ICST) Pub Date : 2018-08-01 DOI: 10.1109/ICSTC.2018.8528702

W. Anurogo, M. Lubis, L. R. Sari, M. Mufida, Wikan Java Prihantarto

{"title":"Satellite-based Estimation of Above Ground Carbon Stock Estimation for Rubber Plantation in Tembir Salatiga Central Java","authors":"W. Anurogo, M. Lubis, L. R. Sari, M. Mufida, Wikan Java Prihantarto","doi":"10.1109/ICSTC.2018.8528702","DOIUrl":"https://doi.org/10.1109/ICSTC.2018.8528702","url":null,"abstract":"The concentration of CO2 content in the atmosphere needs to be reduced in order to reduce the greenhouse effect. The effective way of CO2 absorption in the air is through photosynthesis performed by vegetation. Through photosynthesis, the CO2 absorbed by vegetation and converted into organic carbon stored in biomass. This research was conducted in a rubber plantation at Tembir Salatiga Central Java. This research aims to determine aboveground carbon stocks that exist in the research area by utilizing remote sensing data This research uses the image generated by the TERRA satellite sensors, that produced by the project's partnership between the Japan - USA to resolve the problems concerned with natural resources and environmental issue that is the image of the ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer). The method used in this research is remote sensing data extraction and statistical analysis. The data is the correlation between biomass data at each sample plots with vegetation index value (MSAVI). The value of R is the correlation between those two data that is used to find out how big the relations between both variables that be correlated. the results of this research are the relationship between vegetation index transform (MSAVI) with biomass content obtained from allometric calculation. The relationship of these two variables indicated by the value of the linear regression which of these research produced a regression between MSAVI and biomass content is y = 1683.9x - 423.87 with R2 0.681 (68%). From these results can be seen that the content of the biomass resulting from the extraction of remote sensing data able to represent 68% of the biomass conditions contained in the study sites. The research results show that carbon stocks contained in the research sites were 875227.25 TonC.","PeriodicalId":196768,"journal":{"name":"2018 4th International Conference on Science and Technology (ICST)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125557589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The Comparison of Canopy Density Measurement Using UAV and Hemispherical Photography for Remote Sensing Based Mapping 基于遥感制图的无人机与半球面摄影冠层密度测量的比较

2018 4th International Conference on Science and Technology (ICST) Pub Date : 2018-08-01 DOI: 10.1109/ICSTC.2018.8528670

D. Umarhadi, P. Danoedoro, P. Wicaksono, P. Widayani, Wahvu Nurbandi, A. Juniansah

引用次数: 8

Resource Endowments Strategy for Sustainable E-Government 可持续电子政务的资源禀赋战略

2018 4th International Conference on Science and Technology (ICST) Pub Date : 2018-08-01 DOI: 10.1109/ICSTC.2018.8528680

N. Nurdin

引用次数: 2

Effects of Heat Treatments on Mechanical Properties, Specific Wear and Corrosion Rate of HQ 809 Steel for Machinery Components Application 热处理对机械零部件用hq809钢力学性能、比磨损和腐蚀速率的影响

2018 4th International Conference on Science and Technology (ICST) Pub Date : 2018-08-01 DOI: 10.1109/ICSTC.2018.8528600

V. Malau, Wildan Ihsan Fauzi

{"title":"Effects of Heat Treatments on Mechanical Properties, Specific Wear and Corrosion Rate of HQ 809 Steel for Machinery Components Application","authors":"V. Malau, Wildan Ihsan Fauzi","doi":"10.1109/ICSTC.2018.8528600","DOIUrl":"https://doi.org/10.1109/ICSTC.2018.8528600","url":null,"abstract":"HQ (High Quality) 809 steel is a HSLA (High Strength Low Alloy) steel and it is equivalent to AISI 4140, JIS SCM440, DIN 42CrMo4. HQ 809 is a chromium molybdenum alloy steel for applications requiring a high tensile strength, good hardenability, ductility, toughness, wear resistance and good fatigue strength. HQ 809 is commonly used for heavy-duty shafts, gears, axles, couplings, pins, bolts, nuts, impellers of centrifugal compressors. The objective of this research is to characterize the effects of heat treatment such as quenching and tempering processes on mechanical properties (hardness, impact energy), specific wear and corrosion rate of HQ 809 steel in 3.5 % NaCI solution. Quenching process has been conducted by heating the samples at the austenite temperature of 950 °C with a soaking time of 2 hours and then these samples were cooled rapidly in oil medium. Tempering processes were done at temperatures of 150, 200, 250, 300, 350, 400, 450, 500, 550 and 600 °C with a holding time of 2 hours. The sample properties such as hardness, impact energy, specific wear and have been characterized by a micro Vickers hardness test, Charpy impact, disk-on-block wear test respectively. Corrosion rate was characterized by potential polarization. All tests were performed at room temperature and test parameter was tempering temperature variations. The results show that the tempering temperature variations generate significant effect on HQ 809 properties. In general, the Vickers microhardness decreases, however, the specific wear and impact energy increase if tempering temperatures of the samples increase. The raw material of HQ 809 has a hardness of 270 VHN (Vickers Hardness Number) and the quenched sample has the highest hardness of 370 VHN. But, tempering temperatures do not have significant effects on the corrosion rate of HQ 809. The tempering temperature of 500 °C produces a more cathodic sample compared to other tempering temperatures.","PeriodicalId":196768,"journal":{"name":"2018 4th International Conference on Science and Technology (ICST)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122192438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Stepper Motor Driven Solar Tracker System for Solar Panel 用于太阳能电池板的步进电机驱动太阳能跟踪系统

2018 4th International Conference on Science and Technology (ICST) Pub Date : 2018-08-01 DOI: 10.1109/ICSTC.2018.8528571

S. Hawibowo, Imadudin Ala, Rachmana Berlindo Citra Lestari, Fahmy Rinanda Saputri

引用次数: 3