Pub Date : 2015-12-01DOI: 10.1109/WCST.2015.7415121
Victor Olalekan Adebayo
Green Public Procurement (GPP) is a public policy tool that facilitates the embedding of the Triple Bottom Line (TBL) goals of sustainable development. Several research studies have examined the embedding of sustainability into state procurement decisions; however, in the main, empirical studies on the incorporation of sustainability into public procurement processes, frameworks and decision-making in Sub-Saharan Africa (SSA) countries have been overlooked. Using data gathered from a questionnaire survey, this paper aims to examine the embedding of sustainability into public procurement decisions in Nigeria. Specifically, the research measures the impact of procurement policy, lifecycle analysis (LCA), procurement processes and supplier relationships in the implanting of sustainability in public procurement. Results were obtained from a questionnaire sent to 103 respondents working in procurement departments in the Nigerian public sector. 58 responses were returned representing a 57% response rate. The findings show that, cumulatively, there are inadequate policy measures to address the TBL of sustainability. The research outcomes also show that supplier relationships are not optimized and LCA is not sufficiently utilised in the public procurement decision making process in Nigeria. In terms of policy, the study will enable governments in developing countries to formulate and implement effective GPP policies.
{"title":"Examining the implantation of sustainability into state procurement decision models: An experiential overview of the Nigerian public sector","authors":"Victor Olalekan Adebayo","doi":"10.1109/WCST.2015.7415121","DOIUrl":"https://doi.org/10.1109/WCST.2015.7415121","url":null,"abstract":"Green Public Procurement (GPP) is a public policy tool that facilitates the embedding of the Triple Bottom Line (TBL) goals of sustainable development. Several research studies have examined the embedding of sustainability into state procurement decisions; however, in the main, empirical studies on the incorporation of sustainability into public procurement processes, frameworks and decision-making in Sub-Saharan Africa (SSA) countries have been overlooked. Using data gathered from a questionnaire survey, this paper aims to examine the embedding of sustainability into public procurement decisions in Nigeria. Specifically, the research measures the impact of procurement policy, lifecycle analysis (LCA), procurement processes and supplier relationships in the implanting of sustainability in public procurement. Results were obtained from a questionnaire sent to 103 respondents working in procurement departments in the Nigerian public sector. 58 responses were returned representing a 57% response rate. The findings show that, cumulatively, there are inadequate policy measures to address the TBL of sustainability. The research outcomes also show that supplier relationships are not optimized and LCA is not sufficiently utilised in the public procurement decision making process in Nigeria. In terms of policy, the study will enable governments in developing countries to formulate and implement effective GPP policies.","PeriodicalId":259036,"journal":{"name":"2015 World Congress on Sustainable Technologies (WCST)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116800792","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}
Pub Date : 2015-12-01DOI: 10.1109/WCST.2015.7415120
B. Solanke, J. Fapohunda
Sustainable building construction has become essential in the construction industry with the aim of satisfying the present and future needs of construction stakeholders. Selection and procurement of appropriate materials that satisfies the principles of sustainability is paramount in construction. To this end, the traditional method of materials procurement has been found to be inefficient considering the increased innovations and diversity of materials available for construction. This paper explores the implementation of E-commerce especially e-procurement as a strategy for improving the process of materials procurement in the South African construction industry. This study obtained data quantitatively through questionnaires administered to 150 construction professionals in the Western Cape Province of South Africa. A total of 93 responses were retrieved and analysed. Findings indicated: building cost reduction, enhanced environmental protection and enhanced implementation of government policies as benefits of sustainability in materials procurement towards sustainable building production. However, e-procurement implementation during materials procurement are hindered by (a) lack of awareness, (b) resistance to change, (c) high cost of installation and operation and (d) Internet fraud. Given the benefits and impacts of e-commerce, adequate implementation of these findings should proffer a suitable strategy in addressing the challenges of materials procurement towards sustainable building construction.
{"title":"Impacts of E-commerce on construction materials procurement for sustainable construction","authors":"B. Solanke, J. Fapohunda","doi":"10.1109/WCST.2015.7415120","DOIUrl":"https://doi.org/10.1109/WCST.2015.7415120","url":null,"abstract":"Sustainable building construction has become essential in the construction industry with the aim of satisfying the present and future needs of construction stakeholders. Selection and procurement of appropriate materials that satisfies the principles of sustainability is paramount in construction. To this end, the traditional method of materials procurement has been found to be inefficient considering the increased innovations and diversity of materials available for construction. This paper explores the implementation of E-commerce especially e-procurement as a strategy for improving the process of materials procurement in the South African construction industry. This study obtained data quantitatively through questionnaires administered to 150 construction professionals in the Western Cape Province of South Africa. A total of 93 responses were retrieved and analysed. Findings indicated: building cost reduction, enhanced environmental protection and enhanced implementation of government policies as benefits of sustainability in materials procurement towards sustainable building production. However, e-procurement implementation during materials procurement are hindered by (a) lack of awareness, (b) resistance to change, (c) high cost of installation and operation and (d) Internet fraud. Given the benefits and impacts of e-commerce, adequate implementation of these findings should proffer a suitable strategy in addressing the challenges of materials procurement towards sustainable building construction.","PeriodicalId":259036,"journal":{"name":"2015 World Congress on Sustainable Technologies (WCST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123605224","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}
Pub Date : 2015-12-01DOI: 10.1109/WCST.2015.7415140
Hariraj Singh, B. Mishra
Globalization, industrialization, mining, and uncontrolled population growth have fostered a shortage of potable water. Thus, it has become imperative to understand an effective and reasonable water purification technique. A renewed interest in electrocoagulation has been spurred by the search for reliable water-treatment processes. This paper has elucidated a technical approach for getting rid of heavy metals and total suspended solids from water using an aluminum electrode. The effect of operational parameters, i.e. current density, inter-electrode distance, operating time, and pH, were studied and evaluated for maximum efficiency. The study corroborates the correlation between current density and removal efficiency. Neutral pH and a low electrode gap have been found to aid the efficacy of the electrocoagulation. The results shows a maximum TSS removal efficiency of 76.6 % at a current density of 5.3 mA/cm2 and contact time of 30 minutes. In the heavy metal remediation, 30 min of process time has exhibited extreme reduction rates of 99 %, 59.2%, and 45.8%, for Cu, Cr, and Zn, respectively. During the experiments, electrical conductivity and dissolved solids were found to fluctuate by 5-6 % of the original value. Moreover, kinetic study has also demonstrated for pollutants removal follows first and second order model.
{"title":"Performance evaluation of the electro-coagulation treatment process for the removal of total suspended solids and metals from water","authors":"Hariraj Singh, B. Mishra","doi":"10.1109/WCST.2015.7415140","DOIUrl":"https://doi.org/10.1109/WCST.2015.7415140","url":null,"abstract":"Globalization, industrialization, mining, and uncontrolled population growth have fostered a shortage of potable water. Thus, it has become imperative to understand an effective and reasonable water purification technique. A renewed interest in electrocoagulation has been spurred by the search for reliable water-treatment processes. This paper has elucidated a technical approach for getting rid of heavy metals and total suspended solids from water using an aluminum electrode. The effect of operational parameters, i.e. current density, inter-electrode distance, operating time, and pH, were studied and evaluated for maximum efficiency. The study corroborates the correlation between current density and removal efficiency. Neutral pH and a low electrode gap have been found to aid the efficacy of the electrocoagulation. The results shows a maximum TSS removal efficiency of 76.6 % at a current density of 5.3 mA/cm2 and contact time of 30 minutes. In the heavy metal remediation, 30 min of process time has exhibited extreme reduction rates of 99 %, 59.2%, and 45.8%, for Cu, Cr, and Zn, respectively. During the experiments, electrical conductivity and dissolved solids were found to fluctuate by 5-6 % of the original value. Moreover, kinetic study has also demonstrated for pollutants removal follows first and second order model.","PeriodicalId":259036,"journal":{"name":"2015 World Congress on Sustainable Technologies (WCST)","volume":"34 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133662173","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}
Pub Date : 2015-12-01DOI: 10.1109/WCST.2015.7414851
M. Saiepour, Kokil Jain, Yuhang Lou
Within a European collaborative research project aimed at improving resource efficiency and environmental sustainability in steelmaking plants, simulations have been applied to evaluate integrated solutions for water recycling, reuse and treatment at a blast furnace gas wash plant. The blast furnace gas washing process, in steelworks, is a major water consumer and significant contributor to water pollution. A two paper series describes the research undertaken at a Tata Steel blast furnace plant (UK) in collaboration with Process Integration Limited (UK) to model and simulate process integration options for improving water quality, increasing water conservation by reuse, maximising energy efficiency and reducing treatment and operating costs. This paper constitutes the first part which introduces the system and describes the underlying issues and opportunities that have been considered in this study. It also provides a methodological framework and defines the base case for the study. Thereafter simulation results for recycle-reuse analysis (without treatment) are discussed and it has been concluded that some form of treatment is essential in order to achieve the stated objectives. Reverse osmosis and magnetic filtration treatment are identified as the suitable options in this regard. Their field trials and subsequent analysis of various regeneration-reuse scenarios and their techno-economic evaluation have been discussed in the second part of the paper.
{"title":"Integrated optimisation of blast furnace gas wash water treatment, reuse and cost savings Part I: Methodological approach","authors":"M. Saiepour, Kokil Jain, Yuhang Lou","doi":"10.1109/WCST.2015.7414851","DOIUrl":"https://doi.org/10.1109/WCST.2015.7414851","url":null,"abstract":"Within a European collaborative research project aimed at improving resource efficiency and environmental sustainability in steelmaking plants, simulations have been applied to evaluate integrated solutions for water recycling, reuse and treatment at a blast furnace gas wash plant. The blast furnace gas washing process, in steelworks, is a major water consumer and significant contributor to water pollution. A two paper series describes the research undertaken at a Tata Steel blast furnace plant (UK) in collaboration with Process Integration Limited (UK) to model and simulate process integration options for improving water quality, increasing water conservation by reuse, maximising energy efficiency and reducing treatment and operating costs. This paper constitutes the first part which introduces the system and describes the underlying issues and opportunities that have been considered in this study. It also provides a methodological framework and defines the base case for the study. Thereafter simulation results for recycle-reuse analysis (without treatment) are discussed and it has been concluded that some form of treatment is essential in order to achieve the stated objectives. Reverse osmosis and magnetic filtration treatment are identified as the suitable options in this regard. Their field trials and subsequent analysis of various regeneration-reuse scenarios and their techno-economic evaluation have been discussed in the second part of the paper.","PeriodicalId":259036,"journal":{"name":"2015 World Congress on Sustainable Technologies (WCST)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127561072","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}
Pub Date : 2015-12-01DOI: 10.1109/WCST.2015.7415127
Asif Iqbal, C. Pattinson, A. Kor
Simple Network Management Protocol (SNMP) is the protocol which has the capability to monitor the performance of IP based devices. Also it can monitor components installed on these devices to determine whether they are working or not. In an environment with hundreds of installed servers, it is not possible to check if each machine is working properly. SNMP can also be a used in cloud computing environment for the monitoring of the hardware, infrastructure or virtual machines. To date, not much work has been done on cloud computing monitoring with SNMP. In this research, empirical results of using SNMPv3 to monitor Virtual Machines configured on Type I and II hypervisors and the hypervisor itself vmware ESXi 5.5 resources. Additionally, this research involved the exploration of efficient ways for monitoring the resources and this will lead to the customisation of MIB with Agent X to provide some management features using SNMPv3. The completed research work will consists of four components: (1). Network Management System (NMS), where Zabbix will be used as NMS; (2). SNMP Agent, which will be installed on the devices which need to be monitored; (3). Virtual Machines; (4). Type I and II Hypervisor.
{"title":"Performance monitoring of Virtual Machines (VMs) of type I and II hypervisors with SNMPv3","authors":"Asif Iqbal, C. Pattinson, A. Kor","doi":"10.1109/WCST.2015.7415127","DOIUrl":"https://doi.org/10.1109/WCST.2015.7415127","url":null,"abstract":"Simple Network Management Protocol (SNMP) is the protocol which has the capability to monitor the performance of IP based devices. Also it can monitor components installed on these devices to determine whether they are working or not. In an environment with hundreds of installed servers, it is not possible to check if each machine is working properly. SNMP can also be a used in cloud computing environment for the monitoring of the hardware, infrastructure or virtual machines. To date, not much work has been done on cloud computing monitoring with SNMP. In this research, empirical results of using SNMPv3 to monitor Virtual Machines configured on Type I and II hypervisors and the hypervisor itself vmware ESXi 5.5 resources. Additionally, this research involved the exploration of efficient ways for monitoring the resources and this will lead to the customisation of MIB with Agent X to provide some management features using SNMPv3. The completed research work will consists of four components: (1). Network Management System (NMS), where Zabbix will be used as NMS; (2). SNMP Agent, which will be installed on the devices which need to be monitored; (3). Virtual Machines; (4). Type I and II Hypervisor.","PeriodicalId":259036,"journal":{"name":"2015 World Congress on Sustainable Technologies (WCST)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129360525","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}
Pub Date : 2015-12-01DOI: 10.1109/WCST.2015.7415116
M. Larsson
Process Integration is a common name for system oriented methods and integrated approaches to complex industrial process plant design. In Process Integration, interactions in the industrial system are taken into account during process design and optimization via their material and energy flows. The use of systematic methodologies is a very effective approach to improve the energy and material efficiency of large and complex industrial facilities. In this paper an analysis of an integrated steel plant together with a new methodology to represent the resource efficiency is presented. The paper shows the importance of process integration as a methodology for the industry in their continued strive to strengthen its long-term sustainability.
{"title":"Process integration in steelmaking experiences and challenges from the PRISMA excellence centre","authors":"M. Larsson","doi":"10.1109/WCST.2015.7415116","DOIUrl":"https://doi.org/10.1109/WCST.2015.7415116","url":null,"abstract":"Process Integration is a common name for system oriented methods and integrated approaches to complex industrial process plant design. In Process Integration, interactions in the industrial system are taken into account during process design and optimization via their material and energy flows. The use of systematic methodologies is a very effective approach to improve the energy and material efficiency of large and complex industrial facilities. In this paper an analysis of an integrated steel plant together with a new methodology to represent the resource efficiency is presented. The paper shows the importance of process integration as a methodology for the industry in their continued strive to strengthen its long-term sustainability.","PeriodicalId":259036,"journal":{"name":"2015 World Congress on Sustainable Technologies (WCST)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117202313","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}
Pub Date : 2015-12-01DOI: 10.1109/WCST.2015.7415135
Nithika Sailesh, Vikas V. Shinde
As urbanization grips the booming cities of India, the problem of waste is rapidly becoming an enormous, vicious repercussion. In a country as vast as India, with cities as spread out as Mumbai, decentralization is the most effective solution for a fast approaching waste management crisis. Treating the household organic waste at source can help reduce the problem of waste drastically. This paper discusses the research and development of a home composter designed for city households, which can manage, dispose and utilize the organic kitchen and food waste at the source of waste generation. This automatic, dual chamber composter ensures easy usage, easy maintenance and user friendly interface. The output compost is free flowing, earthy smelling and ready to use for plant application. The home composter hence effectively replaces the kitchen waste bin with significant value addition.
{"title":"Home composter: Domestic use composter","authors":"Nithika Sailesh, Vikas V. Shinde","doi":"10.1109/WCST.2015.7415135","DOIUrl":"https://doi.org/10.1109/WCST.2015.7415135","url":null,"abstract":"As urbanization grips the booming cities of India, the problem of waste is rapidly becoming an enormous, vicious repercussion. In a country as vast as India, with cities as spread out as Mumbai, decentralization is the most effective solution for a fast approaching waste management crisis. Treating the household organic waste at source can help reduce the problem of waste drastically. This paper discusses the research and development of a home composter designed for city households, which can manage, dispose and utilize the organic kitchen and food waste at the source of waste generation. This automatic, dual chamber composter ensures easy usage, easy maintenance and user friendly interface. The output compost is free flowing, earthy smelling and ready to use for plant application. The home composter hence effectively replaces the kitchen waste bin with significant value addition.","PeriodicalId":259036,"journal":{"name":"2015 World Congress on Sustainable Technologies (WCST)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114884548","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}
Pub Date : 2015-12-01DOI: 10.1109/WCST.2015.7415141
Prasenjit Adak, S. P. Elumalai, Ravi Sahu
Present study attempts to quantify the effect shared auto-rickshaws (SAs) assert on driving pattern of motorcycles (MCs) and passenger cars (PCs) in terms of fuel consumption and exhaust emission. A three day long SA strike was used to compare the driving pattern of MCs and PCs with that of a regular busy day. Driving cycles (DCs) for all three vehicle classes were generated using on-board measurement of speed profiles prior the strike. Similarly, DCs for MCs and PCs were generated during the strike. About 88% reduction in idle time period and 50% reduction in cruising period were observed for MCs during the strike. For PCs the reductions were about 71% and 36% respectively. Average speeds were increased by 42% and 23% for MCs and PCs respectively, which contributes in significant amount of fuel savings. Efficiency of a separate SA lane as an alternative way to improve the fuel consumption scenario was also evaluated in this study. It was seen that about 48% fuels can be saved by the SAs if a separate lane is used and if they follow strict rules about pick up and drop services.
{"title":"Study on impacts of auto-rickshaws on fuel consumption and delay of personal vehicles","authors":"Prasenjit Adak, S. P. Elumalai, Ravi Sahu","doi":"10.1109/WCST.2015.7415141","DOIUrl":"https://doi.org/10.1109/WCST.2015.7415141","url":null,"abstract":"Present study attempts to quantify the effect shared auto-rickshaws (SAs) assert on driving pattern of motorcycles (MCs) and passenger cars (PCs) in terms of fuel consumption and exhaust emission. A three day long SA strike was used to compare the driving pattern of MCs and PCs with that of a regular busy day. Driving cycles (DCs) for all three vehicle classes were generated using on-board measurement of speed profiles prior the strike. Similarly, DCs for MCs and PCs were generated during the strike. About 88% reduction in idle time period and 50% reduction in cruising period were observed for MCs during the strike. For PCs the reductions were about 71% and 36% respectively. Average speeds were increased by 42% and 23% for MCs and PCs respectively, which contributes in significant amount of fuel savings. Efficiency of a separate SA lane as an alternative way to improve the fuel consumption scenario was also evaluated in this study. It was seen that about 48% fuels can be saved by the SAs if a separate lane is used and if they follow strict rules about pick up and drop services.","PeriodicalId":259036,"journal":{"name":"2015 World Congress on Sustainable Technologies (WCST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130191116","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}
Pub Date : 2015-12-01DOI: 10.1109/WCST.2015.7415125
R. Uda
Anonymity in SNS is one of the important things for protecting privacy. We proposed a method in which nouns are replaced with other nouns in consideration of semantic relations. For example, some nouns in the sentence "I go to Tokyo University of Technology with Alice" are replaced such as "I go to university with her". The method prevents the author from leaking privacy of his/her friends to the third party. Levels of obscurity are decided by the relationship between the author and readers. When the relationship is weaker than that in the example above, the message changes such as "I go to school with a friend". In the method, proper nouns and some specific nouns are automatically replaced with other appropriate nouns by hi-speed filtering with Bloom filter. We also proposed an additional method in which messages are authenticated. In the method messages are signed with sanitizable signature since some nouns have possibility to be replaced. The combination of the two proposals provides anonymity and integrity and authentication at the same time. However, I found the latter method has vulnerability. If attackers have knowledge of privacy of victims, original nouns can be specified with one hundred percent correctness. Therefore, in this paper, I propose an improve method for anonymity. The method provides perfect obscurity with anonymity although messages are authenticated.
社交网络的匿名性是保护隐私的重要手段之一。我们提出了一种考虑语义关系的名词替换方法。例如，“I go to Tokyo University of Technology with Alice”这句话中的一些名词被替换为“I go to University with her”。这种方法可以防止作者将自己朋友的隐私泄露给第三方。晦涩程度由作者和读者之间的关系决定。当这种关系比上面的例子弱时，信息就会改变，比如“我和一个朋友一起上学”。该方法通过布隆过滤器的高速过滤，将专有名词和某些特定名词自动替换为其他适当名词。我们还提出了另一种验证消息的方法。在该方法中，由于某些名词有可能被替换，因此使用可消毒签名对消息进行签名。这两种方案的结合同时提供了匿名性、完整性和认证。然而，我发现后一种方法有漏洞。如果攻击者知道受害者的隐私，则可以百分之百正确地指定原始名词。因此，本文提出了一种改进匿名性的方法。虽然消息是经过身份验证的，但该方法提供了完全的匿名性。
{"title":"Method for anonymity of authenticated messages in SNS","authors":"R. Uda","doi":"10.1109/WCST.2015.7415125","DOIUrl":"https://doi.org/10.1109/WCST.2015.7415125","url":null,"abstract":"Anonymity in SNS is one of the important things for protecting privacy. We proposed a method in which nouns are replaced with other nouns in consideration of semantic relations. For example, some nouns in the sentence \"I go to Tokyo University of Technology with Alice\" are replaced such as \"I go to university with her\". The method prevents the author from leaking privacy of his/her friends to the third party. Levels of obscurity are decided by the relationship between the author and readers. When the relationship is weaker than that in the example above, the message changes such as \"I go to school with a friend\". In the method, proper nouns and some specific nouns are automatically replaced with other appropriate nouns by hi-speed filtering with Bloom filter. We also proposed an additional method in which messages are authenticated. In the method messages are signed with sanitizable signature since some nouns have possibility to be replaced. The combination of the two proposals provides anonymity and integrity and authentication at the same time. However, I found the latter method has vulnerability. If attackers have knowledge of privacy of victims, original nouns can be specified with one hundred percent correctness. Therefore, in this paper, I propose an improve method for anonymity. The method provides perfect obscurity with anonymity although messages are authenticated.","PeriodicalId":259036,"journal":{"name":"2015 World Congress on Sustainable Technologies (WCST)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127332091","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}
Pub Date : 2015-12-01DOI: 10.1109/WCST.2015.7414847
C. Shoniregun
The idea of writing a sustainable research paper or developing a topic of research interest that can lead to a PhD/Doctorate degree or proposal is always an endless thinking of where, when, why, what and who. Therefore, becoming an experienced researcher and writer in any field or discipline takes a great deal of practice. This Keynote Lecture will highlights the possible solutions in response to the lack of competence demonstrated by young researchers and PhD / Doctorate students, and the understanding of what contributes to knowledge gap.
{"title":"PhD and doctorate consortium: Writing a sustainable research paper","authors":"C. Shoniregun","doi":"10.1109/WCST.2015.7414847","DOIUrl":"https://doi.org/10.1109/WCST.2015.7414847","url":null,"abstract":"The idea of writing a sustainable research paper or developing a topic of research interest that can lead to a PhD/Doctorate degree or proposal is always an endless thinking of where, when, why, what and who. Therefore, becoming an experienced researcher and writer in any field or discipline takes a great deal of practice. This Keynote Lecture will highlights the possible solutions in response to the lack of competence demonstrated by young researchers and PhD / Doctorate students, and the understanding of what contributes to knowledge gap.","PeriodicalId":259036,"journal":{"name":"2015 World Congress on Sustainable Technologies (WCST)","volume":"35 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123405721","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}
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