Pub Date : 2014-12-04DOI: 10.1109/GHTC.2014.6970352
Kendall S. Thacker, McCall Barger, C. Mattson
Over 100 improved cookstove projects have been initiated since the late 1990s. However, despite the improvements in burn efficiency, such projects have been met with low adoption rates. A leading reason for this is that improved cookstoves often do not meet the needs of the user. This research answers the question: What are the end user needs for a successful cookstove and how do these needs vary across different regions and with differing household preferences? A review of published literature was performed to ascertain the requirements necessary for a successful improved cookstove. The results reveal there exists a set of primary end user needs and a set of secondary end user needs that must be met for users to be satisfied. Additionally, the use and expectations of a cookstove are influenced by a variety of regional, community, and household factors. The successful design of a cookstove requires an understanding of these factors and how they vary with time and circumstance. Given the large variability in cookstove use around the world, it is unlikely that a single rigid stove design will satisfy all the requirements for a successful cookstove. It is recommended that adaptable cookstoves be developed, thus increasing accompanying adoption rates.
{"title":"A global review of end user needs: Establishing the need for adaptable cookstoves","authors":"Kendall S. Thacker, McCall Barger, C. Mattson","doi":"10.1109/GHTC.2014.6970352","DOIUrl":"https://doi.org/10.1109/GHTC.2014.6970352","url":null,"abstract":"Over 100 improved cookstove projects have been initiated since the late 1990s. However, despite the improvements in burn efficiency, such projects have been met with low adoption rates. A leading reason for this is that improved cookstoves often do not meet the needs of the user. This research answers the question: What are the end user needs for a successful cookstove and how do these needs vary across different regions and with differing household preferences? A review of published literature was performed to ascertain the requirements necessary for a successful improved cookstove. The results reveal there exists a set of primary end user needs and a set of secondary end user needs that must be met for users to be satisfied. Additionally, the use and expectations of a cookstove are influenced by a variety of regional, community, and household factors. The successful design of a cookstove requires an understanding of these factors and how they vary with time and circumstance. Given the large variability in cookstove use around the world, it is unlikely that a single rigid stove design will satisfy all the requirements for a successful cookstove. It is recommended that adaptable cookstoves be developed, thus increasing accompanying adoption rates.","PeriodicalId":310396,"journal":{"name":"IEEE Global Humanitarian Technology Conference (GHTC 2014)","volume":"407 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132086921","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 : 2014-12-04DOI: 10.1109/GHTC.2014.6970259
G. Clifford, C. Arteta, T. Zhu, Marco A. F. Pimentel, Mauro D. Santos, João S. Domingos, M. A. Maraci, J. Behar, J. Oster
Barriers to effective screening and management of NCDs in resource-constrained regions include limited availability of trained personnel, access to affordable automatic medical devices, and longitudinal clinical data. We present an end-to-end mHealth system which takes advantage of the almost universal availability of smartphones in order to address these barriers in a scalable and affordable manner. Our system includes simple, low-cost ($5-$20) and open-source peripherals that allow a minimally trained person to collect high-quality medical data at the point-of-care through a standard smartphone; allows the reliable transmission of clinical data even in the case of high-latency network connections; stores data in a cloud-based system, making patient records accessible anywhere; and enables both crowdsourced diagnostics and generation of annotated data for the research and development of automatic decision support and risk assessment systems. We show examples of the different elements of the system tailored for the management of cardiovascular disease and chronic obstructive pulmonary disease, which includes prototypes of the low-cost peripherals. In a validation study (of 40 volunteers), our smartphone-based blood pressure (BP) monitor was shown to measure BP, heart rate and respiration rate with a mean-absolute-error of less than 5 units from the reference values for 80% of the measurements.
{"title":"A scalable mHealth system for noncommunicable disease management","authors":"G. Clifford, C. Arteta, T. Zhu, Marco A. F. Pimentel, Mauro D. Santos, João S. Domingos, M. A. Maraci, J. Behar, J. Oster","doi":"10.1109/GHTC.2014.6970259","DOIUrl":"https://doi.org/10.1109/GHTC.2014.6970259","url":null,"abstract":"Barriers to effective screening and management of NCDs in resource-constrained regions include limited availability of trained personnel, access to affordable automatic medical devices, and longitudinal clinical data. We present an end-to-end mHealth system which takes advantage of the almost universal availability of smartphones in order to address these barriers in a scalable and affordable manner. Our system includes simple, low-cost ($5-$20) and open-source peripherals that allow a minimally trained person to collect high-quality medical data at the point-of-care through a standard smartphone; allows the reliable transmission of clinical data even in the case of high-latency network connections; stores data in a cloud-based system, making patient records accessible anywhere; and enables both crowdsourced diagnostics and generation of annotated data for the research and development of automatic decision support and risk assessment systems. We show examples of the different elements of the system tailored for the management of cardiovascular disease and chronic obstructive pulmonary disease, which includes prototypes of the low-cost peripherals. In a validation study (of 40 volunteers), our smartphone-based blood pressure (BP) monitor was shown to measure BP, heart rate and respiration rate with a mean-absolute-error of less than 5 units from the reference values for 80% of the measurements.","PeriodicalId":310396,"journal":{"name":"IEEE Global Humanitarian Technology Conference (GHTC 2014)","volume":"6 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132694579","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 : 2014-12-04DOI: 10.1109/GHTC.2014.6970351
Cameron M. Quist, Randy S. Lewis, M. Jones
Biomass cookstoves are used extensively throughout the developing world. Many improved cookstoves are being developed to minimize health hazards, maximize efficiency, and reduce fuel consumption. Commonly, cookstoves have been assessed using the Water Boiling Test (WBT), the Controlled Cooking Test (CCT), the Kitchen Performance Test (KTP), and combustion/particulate analysis. However, there is also an opportunity to expand traditional testing to assess heat loss from the cookstove using infrared thermography. Accurate mappings of the temperature field on the surface of the cookstove provide information that would enable optimization of the thermal efficiency of cookstove designs. This paper presents the results of a preliminary study designed to map the time-dependent surface temperatures of a traditional Peruvian cookstove. The time-dependent analysis of the temperature field provides new insights regarding heat losses. In addition to IR analysis, the WBT and combustion/particulate analysis were performed. Key results showed a negative correlation between burning rate and thermal efficiency, thermal efficiencies increase between phases of the water boiling test, and large thermal gradients between the center of the cookstove and the sides. Infrared thermography is instrumental in identifying areas of heat loss that are not made apparent with traditional cookstove testing methods. Thus, including infrared thermography in cookstove testing protocols provides significant information to improve cookstove designs.
{"title":"Utilization of infrared photography to assess heat losses in a Peruvian cookstove","authors":"Cameron M. Quist, Randy S. Lewis, M. Jones","doi":"10.1109/GHTC.2014.6970351","DOIUrl":"https://doi.org/10.1109/GHTC.2014.6970351","url":null,"abstract":"Biomass cookstoves are used extensively throughout the developing world. Many improved cookstoves are being developed to minimize health hazards, maximize efficiency, and reduce fuel consumption. Commonly, cookstoves have been assessed using the Water Boiling Test (WBT), the Controlled Cooking Test (CCT), the Kitchen Performance Test (KTP), and combustion/particulate analysis. However, there is also an opportunity to expand traditional testing to assess heat loss from the cookstove using infrared thermography. Accurate mappings of the temperature field on the surface of the cookstove provide information that would enable optimization of the thermal efficiency of cookstove designs. This paper presents the results of a preliminary study designed to map the time-dependent surface temperatures of a traditional Peruvian cookstove. The time-dependent analysis of the temperature field provides new insights regarding heat losses. In addition to IR analysis, the WBT and combustion/particulate analysis were performed. Key results showed a negative correlation between burning rate and thermal efficiency, thermal efficiencies increase between phases of the water boiling test, and large thermal gradients between the center of the cookstove and the sides. Infrared thermography is instrumental in identifying areas of heat loss that are not made apparent with traditional cookstove testing methods. Thus, including infrared thermography in cookstove testing protocols provides significant information to improve cookstove designs.","PeriodicalId":310396,"journal":{"name":"IEEE Global Humanitarian Technology Conference (GHTC 2014)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128829217","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 : 2014-12-04DOI: 10.1109/GHTC.2014.6970296
Jineet Doshi
Knowledge is power. In today's Information age, education is the de facto tool which enables thinking by transforming information into knowledge. It is valued to such an extent that the right to education is considered to be one of the fundamental rights of the people. However education is often disparaged. According to the United Nations, India is home to a staggering 287 million illiterate adults [1]. 50% Indian children in the age group of 6-18 years do not go to school [2]. On the other hand, Information and Communication Technology (ICT) has become ubiquitous in today's world with an ever increasing adoption rate. This paper showcases the promising results of an experiment done in some schools of rural India and the tremendous potential of ICT to help solve the problem of mass illiteracy. The methodology used is described in detail in modular form with the significance of each part highlighted. The proposed model is cost effective, robust, easily implementable and highly scalable. This novel approach is flexible and 5 times less expensive than the model currently being used by many Governments and Non-Governmental Organisations to disseminate ICT for education. It also takes lesser time to deploy and is more efficient in facilitating learning among children. The later part of the paper covers possible extensions and describes adjustments to the proposed model which will facilitate implementation in other geographic regions, thus empowering developing countries marred by mass illiteracy.
{"title":"ICT based solutions for education in rural India- A case study","authors":"Jineet Doshi","doi":"10.1109/GHTC.2014.6970296","DOIUrl":"https://doi.org/10.1109/GHTC.2014.6970296","url":null,"abstract":"Knowledge is power. In today's Information age, education is the de facto tool which enables thinking by transforming information into knowledge. It is valued to such an extent that the right to education is considered to be one of the fundamental rights of the people. However education is often disparaged. According to the United Nations, India is home to a staggering 287 million illiterate adults [1]. 50% Indian children in the age group of 6-18 years do not go to school [2]. On the other hand, Information and Communication Technology (ICT) has become ubiquitous in today's world with an ever increasing adoption rate. This paper showcases the promising results of an experiment done in some schools of rural India and the tremendous potential of ICT to help solve the problem of mass illiteracy. The methodology used is described in detail in modular form with the significance of each part highlighted. The proposed model is cost effective, robust, easily implementable and highly scalable. This novel approach is flexible and 5 times less expensive than the model currently being used by many Governments and Non-Governmental Organisations to disseminate ICT for education. It also takes lesser time to deploy and is more efficient in facilitating learning among children. The later part of the paper covers possible extensions and describes adjustments to the proposed model which will facilitate implementation in other geographic regions, thus empowering developing countries marred by mass illiteracy.","PeriodicalId":310396,"journal":{"name":"IEEE Global Humanitarian Technology Conference (GHTC 2014)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128918341","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 : 2014-12-04DOI: 10.1109/GHTC.2014.6970321
Amy E. Wood, C. Wood, C. Mattson
Design for Manufacture and Assembly (DFMA) principles form an established framework used to design products in the modern developed world. These principles are assumed to be universal in the design process; however, they are not universally applicable when designing for the developing world for several reasons. First, because the physical conditions in which a product is manufactured are very different, and second, because things such as culture, traditions, and customs in the developing world affect how the product can be produced. Because of these differences, the standard DFMA principles can be categorized into two groups: those we could find a reasonable counter example for and those we could not. For simplicity of presentation, those principles for which a counter example is found are called contingent, because they are contingent on the context. The principles for which a counter example is not found are called universal. Modifications are given for each of the contingent principles that make their use more appropriate in designing for the developing world. Additional modifications also include alternative interpretations of subjective words used in the traditional DFMA principles. A case study of a pineapple juicer for the Amazon region of Brazil is given that demonstrates the principles, both contingent and universal.
{"title":"Application and modification of Design for Manufacture and Assembly principles for the developing world","authors":"Amy E. Wood, C. Wood, C. Mattson","doi":"10.1109/GHTC.2014.6970321","DOIUrl":"https://doi.org/10.1109/GHTC.2014.6970321","url":null,"abstract":"Design for Manufacture and Assembly (DFMA) principles form an established framework used to design products in the modern developed world. These principles are assumed to be universal in the design process; however, they are not universally applicable when designing for the developing world for several reasons. First, because the physical conditions in which a product is manufactured are very different, and second, because things such as culture, traditions, and customs in the developing world affect how the product can be produced. Because of these differences, the standard DFMA principles can be categorized into two groups: those we could find a reasonable counter example for and those we could not. For simplicity of presentation, those principles for which a counter example is found are called contingent, because they are contingent on the context. The principles for which a counter example is not found are called universal. Modifications are given for each of the contingent principles that make their use more appropriate in designing for the developing world. Additional modifications also include alternative interpretations of subjective words used in the traditional DFMA principles. A case study of a pineapple juicer for the Amazon region of Brazil is given that demonstrates the principles, both contingent and universal.","PeriodicalId":310396,"journal":{"name":"IEEE Global Humanitarian Technology Conference (GHTC 2014)","volume":"25 3S 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124282810","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 : 2014-12-04DOI: 10.1109/GHTC.2014.6970268
R. Larsen, Derek G. Welbourn, Daniel Wessner, R. Podmore, Michelle Lacourciere, A. A. Larsen, Patrick Lee, Ronald Moulton, S. Myers, M. Niboh, Patrick Ryan, Michael Wilson
Sustainable provision of off-grid solar electricity for Less Developed Countries (LDC) is a basic first step toward enabling a range of Beyond the Light Bulb initiatives. The off-grid electricity program of the Community Solutions Initiative (CSI), still at an early stage of development in several countries, is focused now on demonstrating sustainability and scalability. Initial steps to incubate ideas as well as design, deploy, and lease SunBlazer units have honed CSI's understanding of more holistic approaches to community empowerment. Effective product design requires in-country value chain economics whereby local franchisees demonstrate added value in their own context and marketplace. Lessons learned from the process of incubating and demonstrating the success of businesses owned by and for LDC communities contributes critically to a learning platform to educate on just and sustainable development practices. Thus the guiding principle of CSI is to incubate, demonstrate, and educate (I-D-E) across age groups to grow human capacity and community empowerment. This paper describes CSI accomplishments in sustainable community entrepreneur-based businesses to date and describes the need for broader INGO and community partnerships for “learning beyond the light bulb”.
{"title":"“Learning beyond the Light Bulb” among Least Developed Countries based on a sustainable PV solar utility model","authors":"R. Larsen, Derek G. Welbourn, Daniel Wessner, R. Podmore, Michelle Lacourciere, A. A. Larsen, Patrick Lee, Ronald Moulton, S. Myers, M. Niboh, Patrick Ryan, Michael Wilson","doi":"10.1109/GHTC.2014.6970268","DOIUrl":"https://doi.org/10.1109/GHTC.2014.6970268","url":null,"abstract":"Sustainable provision of off-grid solar electricity for Less Developed Countries (LDC) is a basic first step toward enabling a range of Beyond the Light Bulb initiatives. The off-grid electricity program of the Community Solutions Initiative (CSI), still at an early stage of development in several countries, is focused now on demonstrating sustainability and scalability. Initial steps to incubate ideas as well as design, deploy, and lease SunBlazer units have honed CSI's understanding of more holistic approaches to community empowerment. Effective product design requires in-country value chain economics whereby local franchisees demonstrate added value in their own context and marketplace. Lessons learned from the process of incubating and demonstrating the success of businesses owned by and for LDC communities contributes critically to a learning platform to educate on just and sustainable development practices. Thus the guiding principle of CSI is to incubate, demonstrate, and educate (I-D-E) across age groups to grow human capacity and community empowerment. This paper describes CSI accomplishments in sustainable community entrepreneur-based businesses to date and describes the need for broader INGO and community partnerships for “learning beyond the light bulb”.","PeriodicalId":310396,"journal":{"name":"IEEE Global Humanitarian Technology Conference (GHTC 2014)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124048566","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 : 2014-12-04DOI: 10.1109/GHTC.2014.6970324
Anshul Dhankher, G. Drake, Jinie Haytko, Yatindra Patel, Christine Sidoti, Gi-Won Song
Hospitals in the developing world lack effective methods of sterilizing surgical equipment, leading to a high prevalence of surgical site infections. The device, Helios, is a solar-powered system that sterilizes surgical equipment and provides potable water in areas without grid electricity. The system is designed as a preassembled unit that is ready to use within minutes of delivery. A pressure cooker autoclave sterilizes surgical equipment and emits pure steam that a heat exchanger condenses into potable water. The heat exchanger also preheats a separate batch of water for subsequent cycles, increasing the number of potential surgeries performed per day. The Helios design is based on needs identified in Nicaragua to maximize sunlight absorption and heat retention while requiring fewer, complex components than competing products. Moreover, the design utilizes materials that are inexpensive and locally available. Testing has shown that the heat exchanger component function as desired. The current design is near completion, and future work in the project will test the device's ability to both capture sunlight and function effectively as an autoclave.
{"title":"A solar sterilization and distillation unit for water in resource-poor settings","authors":"Anshul Dhankher, G. Drake, Jinie Haytko, Yatindra Patel, Christine Sidoti, Gi-Won Song","doi":"10.1109/GHTC.2014.6970324","DOIUrl":"https://doi.org/10.1109/GHTC.2014.6970324","url":null,"abstract":"Hospitals in the developing world lack effective methods of sterilizing surgical equipment, leading to a high prevalence of surgical site infections. The device, Helios, is a solar-powered system that sterilizes surgical equipment and provides potable water in areas without grid electricity. The system is designed as a preassembled unit that is ready to use within minutes of delivery. A pressure cooker autoclave sterilizes surgical equipment and emits pure steam that a heat exchanger condenses into potable water. The heat exchanger also preheats a separate batch of water for subsequent cycles, increasing the number of potential surgeries performed per day. The Helios design is based on needs identified in Nicaragua to maximize sunlight absorption and heat retention while requiring fewer, complex components than competing products. Moreover, the design utilizes materials that are inexpensive and locally available. Testing has shown that the heat exchanger component function as desired. The current design is near completion, and future work in the project will test the device's ability to both capture sunlight and function effectively as an autoclave.","PeriodicalId":310396,"journal":{"name":"IEEE Global Humanitarian Technology Conference (GHTC 2014)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131088453","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 : 2014-12-04DOI: 10.1109/GHTC.2014.6970348
S. Figueira, Kelsey Dedoshka, Katie Le, Kaitlin Kirasich, D. Levine
An estimated 2.5 million youth, ages 16-24, experience homelessness in the US each year. These young individuals, particularly women, are considered high-risk for serious health problems, including HIV, STDs, teen pregnancy and teen dating violence. Healthcare providers can play a critical role in providing appropriate care to homeless youth and in linking them to other health services. Research suggests that linking healthcare with other services needed by homeless adolescents, such as shelter or food, may help improve their continuity of care. In this paper, we describe Youth StreetConnect, a tool formed by two mobile apps, which will connect young homeless women to local healthcare providers. Considering that cellular phones are common among homeless individuals, particularly teenagers, our tool has the potential to make an impact on these women's lives.
{"title":"Youth StreetConnect - Helping homeless young women","authors":"S. Figueira, Kelsey Dedoshka, Katie Le, Kaitlin Kirasich, D. Levine","doi":"10.1109/GHTC.2014.6970348","DOIUrl":"https://doi.org/10.1109/GHTC.2014.6970348","url":null,"abstract":"An estimated 2.5 million youth, ages 16-24, experience homelessness in the US each year. These young individuals, particularly women, are considered high-risk for serious health problems, including HIV, STDs, teen pregnancy and teen dating violence. Healthcare providers can play a critical role in providing appropriate care to homeless youth and in linking them to other health services. Research suggests that linking healthcare with other services needed by homeless adolescents, such as shelter or food, may help improve their continuity of care. In this paper, we describe Youth StreetConnect, a tool formed by two mobile apps, which will connect young homeless women to local healthcare providers. Considering that cellular phones are common among homeless individuals, particularly teenagers, our tool has the potential to make an impact on these women's lives.","PeriodicalId":310396,"journal":{"name":"IEEE Global Humanitarian Technology Conference (GHTC 2014)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131723734","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 : 2014-12-04DOI: 10.1109/GHTC.2014.6970307
C. Batunlu, M. Musallam
Energy is vital for continual progress of human civilization. Accessing to low-cost, environmental friendly, renewable energy sources are keys to economic future for developing countries and around the globe. Wind energy systems are one of the most adequate option where power electronic converters are used for monitoring and conditioning the energy flow; however operating environmental conditions such as variable wind speed cause temperature fluctuations that derive degradation and failures in these systems. Therefore, proper thermal management and control are necessary to monitor their reliability and lifecycle. Besides, power capacity of these devices is being increased by new technological improvements such as multichip designs. Meanwhile, the heat path through the devices has also become more complex due to the heat coupling effect among several chips and it is not possible to be estimated by conventional methods found in literature. In this paper, a three dimensional finite element model (FEM) is implemented for accurate estimation of thermal profile of a power module. Based on the thermal characteristic obtained by the FEM, an electro thermal model was developed to predict the temperatures of each layer of the power module that cannot be measured during service. The work is essential as it solves massive heat transfer issues and it is important to provide health management of power electronics embedded in wind systems.
{"title":"3D thermal model of power electronic conversion systems for wind energy applications","authors":"C. Batunlu, M. Musallam","doi":"10.1109/GHTC.2014.6970307","DOIUrl":"https://doi.org/10.1109/GHTC.2014.6970307","url":null,"abstract":"Energy is vital for continual progress of human civilization. Accessing to low-cost, environmental friendly, renewable energy sources are keys to economic future for developing countries and around the globe. Wind energy systems are one of the most adequate option where power electronic converters are used for monitoring and conditioning the energy flow; however operating environmental conditions such as variable wind speed cause temperature fluctuations that derive degradation and failures in these systems. Therefore, proper thermal management and control are necessary to monitor their reliability and lifecycle. Besides, power capacity of these devices is being increased by new technological improvements such as multichip designs. Meanwhile, the heat path through the devices has also become more complex due to the heat coupling effect among several chips and it is not possible to be estimated by conventional methods found in literature. In this paper, a three dimensional finite element model (FEM) is implemented for accurate estimation of thermal profile of a power module. Based on the thermal characteristic obtained by the FEM, an electro thermal model was developed to predict the temperatures of each layer of the power module that cannot be measured during service. The work is essential as it solves massive heat transfer issues and it is important to provide health management of power electronics embedded in wind systems.","PeriodicalId":310396,"journal":{"name":"IEEE Global Humanitarian Technology Conference (GHTC 2014)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126837665","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 : 2014-12-04DOI: 10.1109/GHTC.2014.6970298
B. Anand, A. Venus, M. Srinivasan, Arun Noel Victor, K. Madhuri, S. P. S. Rakshaa, Vineeth Vijayaraghavan, Kartik Kulkarni
As a result of diverse elements like outdated learning methodology and imbalance of theoretical and experimental knowledge, over 75% of engineering graduates in India are not readily employable. They do not possess real-world skills needed by the corporations. This research discusses strategies for a combined approach of project based learning (PBL) and student social responsibility (SSR) to reinforce real-world skills among undergraduate students. A comprehensive case study carried out by IEEE Madras Section Special Interest Group on Humanitarian Technology (SIGHT) on students from multiple institutions based on these strategies have been illustrated in this paper. Furthermore, the outcomes of the case study relating to student proficiency development and its social implications are presented.
{"title":"Real-world proficiency augmentation among learners through merger of project based learning (PBL) and student social responsibility (SSR): IEEE Madras Section SIGHT case study","authors":"B. Anand, A. Venus, M. Srinivasan, Arun Noel Victor, K. Madhuri, S. P. S. Rakshaa, Vineeth Vijayaraghavan, Kartik Kulkarni","doi":"10.1109/GHTC.2014.6970298","DOIUrl":"https://doi.org/10.1109/GHTC.2014.6970298","url":null,"abstract":"As a result of diverse elements like outdated learning methodology and imbalance of theoretical and experimental knowledge, over 75% of engineering graduates in India are not readily employable. They do not possess real-world skills needed by the corporations. This research discusses strategies for a combined approach of project based learning (PBL) and student social responsibility (SSR) to reinforce real-world skills among undergraduate students. A comprehensive case study carried out by IEEE Madras Section Special Interest Group on Humanitarian Technology (SIGHT) on students from multiple institutions based on these strategies have been illustrated in this paper. Furthermore, the outcomes of the case study relating to student proficiency development and its social implications are presented.","PeriodicalId":310396,"journal":{"name":"IEEE Global Humanitarian Technology Conference (GHTC 2014)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114156522","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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