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Multi-Period Evacuation Shelter Selection considering Dynamic Hazards Assessment 考虑动态危险评估的多时段避难场所选择
Pub Date : 2019-09-30 DOI: 10.35806/ijoced.v1i2.60
M. Maghfiroh, S. Hanaoka
Natural phenomena may lead to a huge disaster that is affected by triggering phenomenon and the following phenomena that occured afterward. Nevertheless, following single scenario of disaster to create a disaster emergency plan might lead to an incomparable estimation of risk. The decision maker could reduce the risk and perform an efficient evacuation, By understanding disaster prone area based on hazard assessment. This study proposed a multi-period shelter selection and relocation by considering possible impact due to cascading effect and secondary disaster. The objective was to minimize the cost associated with transport and relocation shelter during the evacuation process. A simple yet powerful Simulated Annealing was proposed to solve the model. This study compared the cost that occurred based on two approaches, hazard assessment map, and radius based map. The result showed that model with hazard map generated a better result in comparison with radius based map.  Hazard map could offer different subsets of the shelters identified in the first stage to be selected, thereby producing a minimum number of evacuees.
自然现象可能会导致一场巨大的灾难,而这场灾难受到触发现象和随后发生的以下现象的影响。然而,遵循单一的灾难场景来制定灾难应急计划可能会导致对风险的无与伦比的估计。决策者可以通过危险评估来了解灾害易发区,从而降低风险并进行有效的疏散。本研究通过考虑级联效应和次生灾害可能产生的影响,提出了一个多周期的避难所选择和搬迁方案。目的是在疏散过程中尽量减少与运输和安置住所相关的费用。提出了一种简单而强大的模拟退火方法来求解该模型。本研究比较了基于两种方法的成本,即危险评估图和基于半径的地图。结果表明,与基于半径的地图相比,具有危险地图的模型产生了更好的结果。危险地图可以提供第一阶段确定的避难所的不同子集供选择,从而产生最小数量的撤离人员。
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引用次数: 2
Resistance to Organizational Change: A Case of Yemen National Oil and Gas Sector 对组织变革的抵制:以也门国家石油和天然气部门为例
Pub Date : 2019-04-21 DOI: 10.35806/ijoced.v1i1.31
S. Sabra, A. Aamer
The purpose of this study was to evaluate barriers in understanding different sets of culture, which can arise in an organization. This study was also done to comprehend how resistance can be managed or reduced by discussing the significance of effective communication between management and employees. Trust in management and employee participation during the process of managing changes in National Oil and Gas Company was also identified. We conducted a case study as an investigative tool. In terms of the research site, we focused on one of the national oil and gas companies to highlight some of the issues and outcomes of recent management change. To collect data, questionnaires were distributed within the company. Bivariate correlation analysis and regression analysis were then used to test the proposed hypotheses. The results empirically showed that there are several parameters involving resistance to organizational changes. These parameters can be classified as communication between management and employees, trust in management, and employee participation. These parameters gave a positive impact as employee participation has the highest impact of the three examined factors.
这项研究的目的是评估在理解一个组织中可能出现的不同文化方面的障碍。本研究还通过讨论管理层和员工之间有效沟通的重要性来理解如何管理或减少阻力。在国家石油天然气公司管理变革的过程中,对管理层和员工参与的信任也得到了确认。我们进行了一个案例研究作为调查工具。在研究网站方面,我们重点关注了一家国家石油和天然气公司,以强调最近管理层变革的一些问题和结果。为了收集数据,在公司内部分发了调查问卷。然后使用双变量相关分析和回归分析来检验所提出的假设。实证结果表明,存在几个涉及组织变革阻力的参数。这些参数可以分为管理层和员工之间的沟通、对管理层的信任和员工的参与。这些参数产生了积极的影响,因为在三个考察因素中,员工参与的影响最大。
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引用次数: 3
An Economic Evaluation on Scaling-up Production of Nano Gold from Laboratory to Industrial Scale 纳米金从实验室规模化生产到工业规模的经济评价
Pub Date : 2019-04-21 DOI: 10.35806/IJOCED.V1I1.34
G. Miftahurrahman, H. Setiarahayu, A. Nandiyanto
Gold nanoparticles are applicable in various engineering fields such as in biosensors, drug delivery, and tumor imaging. The objective of this study was to evaluate the scaling-up production of gold nanoparticles from laboratory to industrial scale. The evaluation was done from engineering and economic perspectives, in which several parameters including gross profit margin (GPM), and payback period (PBP) were analyzed. From the engineering evaluation, the result showed that the production of Nano gold is prospective using current technologies. To produce Nano gold, we could use chloroauric acid, sodium citrate, and sodium borohydride, in which these materials can be converted into gold nanoparticles. From the economic evaluation, the result showed that Nano gold production in industry scale can be profitable with a certain condition of raw material. It was shown that the breakeven point, payback period and gross profit margin could be achieved in 20 years.
金纳米颗粒可应用于各种工程领域,如生物传感器、药物输送和肿瘤成像。本研究的目的是评估金纳米颗粒从实验室到工业规模的规模化生产。从工程和经济的角度进行评价,分析了毛利率(GPM)和投资回收期(PBP)等几个参数。工程评价结果表明,利用现有技术生产纳米金是有前景的。为了生产纳米金,我们可以使用氯金酸、柠檬酸钠和硼氢化钠,这些材料可以转化为纳米金。经济评价结果表明,在一定的原料条件下,工业规模的纳米金生产是有利可图的。结果表明,在20年内可以达到盈亏平衡点、投资回收期和毛利率。
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引用次数: 9
Analyzing Physicochemical Properties of Wild Grapes (Lannea Microcarpa) Seed Oil 野生葡萄(Lannea Microcarpa)籽油理化性质分析
Pub Date : 2019-04-21 DOI: 10.35806/ijoced.v1i1.35
A. Warra
The purpose of this study was to analyze physicochemical properties of wild grape (Lannea microcarpa) seed oil. Several characterizations were conducted, including a gas chromatography and mass spectrometry (GC-MS) and cold saponification. The analyses were also supported by measuring acid, iodine, saponification, and peroxide values. Other analyses were relative density and refractive index. Experimental results showed that the oil was dark purple with the composition of oil of 59%. The qualitative GC-MS revealed the oil contained several fatty acids, including decanoic acid, palmitic acid, stearic acid, margaric acid, 1-octadecanoic  acid, oleic, and erucic acid. The soap produced from the seed oil has basic pH and relatively high foam value. When the high concentration of oil was used, the appearance of oil was very dark purple and slightly soluble in water. This is due to the fact that most of the oil compositions were non-polar structure. This result confirmed the potential use of the oil for soap and other cosmetic materials.
本研究旨在分析野生葡萄籽油的理化性质。进行了一些表征,包括气相色谱和质谱(GC-MS)以及冷皂化。通过测量酸、碘、皂化和过氧化值也支持了分析。其他分析是相对密度和折射率。实验结果表明,该油为深紫色,油的组成为59%。定性GC-MS显示,该油含有几种脂肪酸,包括癸酸、棕榈酸、硬脂酸、人造黄油酸、1-十八烷酸、油酸和芥酸。由种子油生产的肥皂具有碱性pH和相对较高的泡沫值。当使用高浓度的油时,油的外观是非常深的紫色并且微溶于水。这是由于大多数油成分是非极性结构。这一结果证实了该油在肥皂和其他化妆品材料中的潜在用途。
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引用次数: 4
Promoting Higher Education Abroad Program in Science and Engineering to Indonesian High Schools: Methods, Challenges and Recommendations 向印尼高中推广国外科学与工程高等教育项目:方法、挑战和建议
Pub Date : 2019-04-21 DOI: 10.35806/IJOCED.V1I1.33
F. Triawan, M. K. Biddinika, S. Hanaoka, B. Budiman
This paper examines the promotional activities of higher education abroad program of Tokyo Institute of Technology (Tokyo Tech), Japan, namely  Global Scientists and Engineers Program (GSEP), that was carried out in Indonesia. The objective is to document the lessons learned in the form of promotional methods, to identify the challenges, and to summarize some reccomendations. GSEP is an international Bachelor of Engineering degree program in Tokyo Tech majoring in Transdisciplicnary Scince and Engineering that is launched in 2015. This program is fully taught in English, thus it expects to attract more international students, such as from Asian countries, to  pursue  higher  education  in  Tokyo  Tech. For  this reason, the promotional activities in Indonesia was done in August 2016 by presentation in front of thirteen high schools in Jakarta and  nearby.  For  improvement  of  future  promotion  effort, participants were requested to express their evaluation regarding content  and  delivery  of  the  material  presentation  by  fulfilling questionnaire survey. The results reveal several interesting facts about Indonesian high school students, such as their willingness to study  abroad  even  without  scholarship,  and  some  important aspects on how to effectively promote higher education abroad program in science and engineering in Indonesia.
本文考察了日本东京理工学院(Tokyo Tech)在印度尼西亚开展的海外高等教育项目,即全球科学家和工程师项目(GSEP)的推广活动。目的是以宣传方法的形式记录经验教训,确定挑战,并总结一些建议。GSEP是东京理工大学2015年开设的跨学科科学与工程专业的国际工程学士学位课程。该项目完全以英语授课,因此它希望吸引更多的国际学生,如来自亚洲国家的学生,在东京理工大学接受高等教育。因此,2016年8月,印度尼西亚的宣传活动在雅加达及附近的13所高中前进行了展示。为了改进未来的推广工作,参与者被要求通过完成问卷调查来表达他们对材料介绍的内容和交付的评价。研究结果揭示了印尼高中生的一些有趣的事实,例如即使没有奖学金,他们也愿意出国留学,以及如何有效推动印尼科学与工程领域的海外高等教育计划的一些重要方面。
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引用次数: 7
Understanding Man-in-the-middle-attack through Survey of Literature 从文学考察看中间人的进攻
Pub Date : 2019-04-21 DOI: 10.35806/ijoced.v1i1.36
Avijit Mallik, Abid Ahsan, M. Shahadat, J. Tsou
These days cyberattack is a serious criminal offense and it is a hotly debated issue moreover. A man-in-the-middle-attack (MITM) is a kind of cyberattack where an unapproved outsider enters into an online correspondence between two users, remains escaped the two parties. The malware that is in the middle-attack often monitors and changes individual/classified information that was just realized by the two users. A man-in-the-middle-attack as a protocol is subjected to an outsider inside the system, which can access, read and change secret information without keeping any tress of manipulation. This issue is intense, and most of the cryptographic systems without having a decent authentication security are threatened to be hacked by the malware named MITM. This paper essentially includes the view of understanding the term of MITM; the current work is mainly emphasized to accumulate related data/information in a single article so that it can be a reference to conduct research further on this topic at college/undergraduate level. This paper likewise audits most cited research and survey articles on MITM recorded on 'Google Scholar'. The result showed that the MITM has correlation to the user behavior, in which this must be considered and careful understood for the way how to solve this problem. The motivation behind this paper is to help the readers for understanding and familiarizing the topic 'man-in-the-middle attack'.
如今,网络攻击是一种严重的刑事犯罪,也是一个备受争议的问题。中间人攻击(MITM)是一种网络攻击,一个未经批准的局外人在两个用户之间进行在线通信,然后逃离双方。处于中间攻击的恶意软件经常监视和更改两个用户刚刚实现的个人/分类信息。中间人攻击作为一种协议,在系统内部受到局外人的攻击,局外人可以访问、读取和更改秘密信息,而不需要任何操纵。这个问题非常严重,大多数没有良好身份验证安全性的加密系统都可能被名为MITM的恶意软件入侵。本文主要包括对MITM术语的理解;目前的工作主要是在一篇文章中积累相关的数据/信息,以便在学院/本科生层面上对该主题进行进一步的研究。本文同样审计了“谷歌学者”上记录的关于MITM的大多数被引用的研究和调查文章。结果表明,MITM与用户行为具有相关性,在解决这一问题的方法中,必须考虑并仔细理解这一点。本文的动机是帮助读者理解和熟悉“中间人攻击”这一主题。
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引用次数: 5
Institutional Change and the Impact Towards Innovation Competitiveness in the Industrial Development of The Batam Free Trade Zone 巴淡自由贸易区产业发展中的制度变迁及其对创新竞争力的影响
Pub Date : 2019-04-21 DOI: 10.35806/ijoced.v1i1.32
B. A. Wiryawan
The purpose of this study is to evaluate an implementation of the batam free trade zone in industrial development. A survey was conducted in 2015 involving 17 firms from different areas of the zone. Relationships between variables were established using Fischer’s Exact Test. Result indicates that there is significant relationship between institutions and innovation, judging by research, designing, and development related activities, fewer than 95% confidence level. The problem lies in the conflicts between the FTZ Authority and the local governments, as the latter continued to dominate the institutional settings. The results indicated that weak vision towards FTZ policy and zero-sum approach by key actors contributed the most to the failure in reindustrialize the zone.
本研究的目的是评估巴坦自由贸易区在工业发展中的实施情况。2015年进行了一项调查,涉及该地区不同地区的17家公司。使用Fischer精确检验建立变量之间的关系。结果表明,从研究、设计和开发相关活动来看,制度与创新之间存在显著关系,置信水平低于95%。问题在于自由贸易区管理局和地方政府之间的冲突,因为后者继续主导着体制环境。结果表明,对自由贸易区政策的软弱愿景和关键参与者的零和方法是导致该区再工业化失败的最大原因。
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引用次数: 4
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Indonesian Journal of Computing Engineering and Design
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