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.
{"title":"Multi-Period Evacuation Shelter Selection considering Dynamic Hazards Assessment","authors":"M. Maghfiroh, S. Hanaoka","doi":"10.35806/ijoced.v1i2.60","DOIUrl":"https://doi.org/10.35806/ijoced.v1i2.60","url":null,"abstract":"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.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49476392","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}
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.
{"title":"Resistance to Organizational Change: A Case of Yemen National Oil and Gas Sector","authors":"S. Sabra, A. Aamer","doi":"10.35806/ijoced.v1i1.31","DOIUrl":"https://doi.org/10.35806/ijoced.v1i1.31","url":null,"abstract":"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.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45233497","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}
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.
{"title":"An Economic Evaluation on Scaling-up Production of Nano Gold from Laboratory to Industrial Scale","authors":"G. Miftahurrahman, H. Setiarahayu, A. Nandiyanto","doi":"10.35806/IJOCED.V1I1.34","DOIUrl":"https://doi.org/10.35806/IJOCED.V1I1.34","url":null,"abstract":"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.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42554023","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}
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.
{"title":"Analyzing Physicochemical Properties of Wild Grapes (Lannea Microcarpa) Seed Oil","authors":"A. Warra","doi":"10.35806/ijoced.v1i1.35","DOIUrl":"https://doi.org/10.35806/ijoced.v1i1.35","url":null,"abstract":"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.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48894792","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}
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.
{"title":"Promoting Higher Education Abroad Program in Science and Engineering to Indonesian High Schools: Methods, Challenges and Recommendations","authors":"F. Triawan, M. K. Biddinika, S. Hanaoka, B. Budiman","doi":"10.35806/IJOCED.V1I1.33","DOIUrl":"https://doi.org/10.35806/IJOCED.V1I1.33","url":null,"abstract":"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.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46808683","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}
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'.
{"title":"Understanding Man-in-the-middle-attack through Survey of Literature","authors":"Avijit Mallik, Abid Ahsan, M. Shahadat, J. Tsou","doi":"10.35806/ijoced.v1i1.36","DOIUrl":"https://doi.org/10.35806/ijoced.v1i1.36","url":null,"abstract":"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'.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49302355","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}
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.
{"title":"Institutional Change and the Impact Towards Innovation Competitiveness in the Industrial Development of The Batam Free Trade Zone","authors":"B. A. Wiryawan","doi":"10.35806/ijoced.v1i1.32","DOIUrl":"https://doi.org/10.35806/ijoced.v1i1.32","url":null,"abstract":"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.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47358976","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}