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2007 International Conference on Information and Communication Technologies and Development最新文献

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Usage models of classroom computing in developing regions 发展中地区课堂计算机的使用模式
Rabin K. Patra, J. Pal, S. Nedevschi, M. Plauché, U. Pawar
This paper examines low-cost computing projects for education in developing regions, and presents some of the common entrepreneurial and technical problems faced by past and current initiatives. In particular, we look at various models of computer usage, and evaluate their appropriateness according to their effectiveness in education, their socio-cultural suitability, and economic feasibility. Based on detailed field studies and interviews conducted in rural Indian classrooms and economic analysis, we show that shared rather than single-user devices constitute a more realistic and sustainable approach for low-cost computing projects targeting children's education.
本文考察了发展中地区用于教育的低成本计算项目,并提出了过去和现在的倡议所面临的一些共同的企业和技术问题。特别是,我们研究了各种计算机使用模式,并根据它们在教育中的有效性、社会文化适用性和经济可行性来评估它们的适当性。根据在印度农村教室进行的详细实地研究和访谈以及经济分析,我们表明,对于以儿童教育为目标的低成本计算项目来说,共享而不是单一用户设备是一种更现实、更可持续的方法。
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引用次数: 44
Evaluation of a single radio rural mesh network in South Africa 对南非单一农村无线电网状网络的评估
David Johnson
This paper evaluates the ability of a low cost wireless mesh network to provide Internet access to a rural area in South Africa with limited broadband connectivity. The network was installed in a mountainous area with a wide range of distances between nodes ranging from long range 5.5 km links to short hops between buildings of only 30 to 50 m. Due to this combination of distances, a mix of unplanned node placement with omni-directional antennas and planned nodes using directional antennas was used. The current network consists of 9 nodes spread over an area of about 15 square kilometers. There is electricity at all the sites but power outages are common, occurring at average intervals of one outage in 7 days, lasting between 3 and 24 hours. The network provides a good service to the satellite based Internet with throughput rates ranging between 300 kbps for 4 hops and 11000 kbps for 1 hop and an average throughput rate of 2324 kbps. The paper evaluates the throughput and delay performance of the OLSR routing protocol being used in the mesh network as well as giving an overview of usage patterns and social behavioural patterns of the users. The users range from first time users in poorer areas of the network to fairly accustomed Internet users in wealthier farming areas.
本文评估了低成本无线网状网络为南非农村地区有限宽带连接提供互联网接入的能力。该网络安装在山区,节点之间的距离范围很广,从5.5公里的长距离连接到仅30至50米的建筑物之间的短跳。由于这种距离组合,使用了带有全向天线的非计划节点放置和使用定向天线的计划节点的混合。目前的网络由9个节点组成,分布在约15平方公里的面积上。所有地点都有电力供应,但经常停电,平均每7天停电一次,持续时间为3至24小时。该网络为基于卫星的互联网提供了良好的服务,吞吐量在4跳300 kbps和1跳11000 kbps之间,平均吞吐量为2324 kbps。本文评估了网状网络中使用的OLSR路由协议的吞吐量和延迟性能,并概述了用户的使用模式和社会行为模式。用户范围从较贫穷地区的首次用户到较富裕的农业地区相当习惯的互联网用户。
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引用次数: 53
Performance models for virtual scanning keyboards: Reducing user involvement in the design 虚拟扫描键盘的性能模型:减少用户在设计中的参与
S. Bhattacharya, A. Basu, D. Samanta
Virtual scanning keyboards are augmentative communication systems used by people with speech and motor impairments. Each of these systems consists of (a) a virtual keyboard and (b) a scanning input method. Designers of these systems need to choose from a large number of design alternatives, which requires evaluating alternate designs. Evaluation of alternate virtual scanning keyboard designs with disabled users is problematic due to the difficulties in (a) getting sufficient number of users for evaluation, particularly in countries like India where social conditions prevent many potential users from participating in the design process and (b) collecting sufficiently large data for analysis due to users' physical disabilities. The problems can be alleviated with the use of model based design methods. In model based design, models of user performance are employed to evaluate designs automatically, thus reducing the need for extensive user testing. Existing performance models of motion impaired users, however, do not consider scanning input methods. This limits the applicability of the existing models to the design of virtual scanning keyboards. To address the limitation, we developed performance models of virtual scanning keyboards. The models are validated by comparing the model predictions with results from user trials. Development and validation of the performance models are described in this paper.
虚拟扫描键盘是语言和运动障碍患者使用的辅助通信系统。这些系统由(a)虚拟键盘和(b)扫描输入法组成。这些系统的设计者需要从大量的设计备选方案中进行选择,这就需要对备选设计进行评估。对残障用户的虚拟扫描键盘设计进行评估是有问题的,因为难以(a)获得足够数量的用户进行评估,特别是在印度等社会条件阻止许多潜在用户参与设计过程的国家;(b)由于用户的身体残疾,收集足够大的数据进行分析。采用基于模型的设计方法可以缓解这些问题。在基于模型的设计中,使用用户性能模型来自动评估设计,从而减少了大量用户测试的需要。然而,现有的运动障碍用户的性能模型并没有考虑扫描输入法。这限制了现有模型对虚拟扫描键盘设计的适用性。为了解决这一限制,我们开发了虚拟扫描键盘的性能模型。通过将模型预测结果与用户试验结果进行比较,验证了模型的有效性。本文描述了性能模型的开发和验证。
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引用次数: 2
Welfare, agency and “ICT for Development” 福利、机构和“资讯及通讯科技促进发展”
Aishwarya Ratan, S. Bailur
This paper deconstructs the term ldquodevelopmentrdquo in ldquoICT for Developmentrdquo - does it imply welfare or agency? Using a framework of individual capability expansion and social choice theory, we illustrate how these two approaches may conflict, and present a simple model to explore how sometimes the Provider's intention in providing an ICT artifact and the User's ultimate usage differ. We analyze our case studies of Our Voices and Hole in the Office against this and find that the User is likely to gain a tangible, immediate return on using agency-enhancing applications (particularly involving entertainment content), while the impact of welfare-enhancing applications is harder to achieve, given the complex contextual determinants of converting information on ldquopotentialrdquo welfare outcomes to ldquoactualrdquo welfare gains. We recommend further research on the welfare-agency tension, and on assessing paternalism in ldquoICT for developmentrdquo interventions.
本文解构了ldquoICT for development中的ldquodevelopmtrdquo一词——它意味着福利还是机构?使用个人能力扩展和社会选择理论的框架,我们说明了这两种方法是如何冲突的,并提出了一个简单的模型来探讨有时提供者提供ICT工件的意图和用户的最终使用是如何不同的。我们分析了我们的“我们的声音”和“办公室里的洞”案例研究,并发现用户可能会在使用代理增强应用程序(特别是涉及娱乐内容)时获得切实的、即时的回报,而福利增强应用程序的影响则更难实现,因为将有关潜在福利结果的信息转换为实际福利收益的复杂背景决定因素。我们建议进一步研究福利机构之间的紧张关系,以及评估社会发展干预措施中的家长式作风。
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引用次数: 33
A survey of information systems reaching small producers in global agricultural value chains 对全球农业价值链中涉及小生产者的信息系统的调查
Tapan S. Parikh, Neil Patel, Y. Schwartzman
Smallholder farmers face many challenges competing in the global marketplace. One major constraint is the lack of access to information and communications, which could be used to make decisions and reach new markets. In this paper, drawing from our experiences designing agricultural information systems in India and Central America, we provide a framework for understanding inter-stakeholder communications within agricultural value chains, focusing on the needs of small producers. First, we outline the major types of stakeholders - including farmers, consumers, intermediaries and various supporting organizations. Then, we survey the major categories of information systems supporting communication between stakeholders, focusing on those reaching small farmers. Based on this survey, we provide the following categorization of information flows within agricultural value chains: 1) link-to-link (L2L): those information flows required to coordinate the sale, movement, and distribution of produce along the value chain, 2) peer-to-peer (P2P): communications required to share knowledge and experiences between members of the same stakeholder group, and the expert community serving that stakeholder group and 3) end-to-end (E2E): communications between producers and consumers, for example, to facilitate exchange of non-economic values to be used as external inputs to market pricing (e.g, certification). We outline some reasons why current information systems have had difficulty in reaching small producers, and highlight a few technology trends that could contribute to increasing the fidelity and accessibility of communications, both between producers and consumers, as well as within their respective stakeholder communities.
小农在全球市场竞争中面临许多挑战。一个主要的制约因素是缺乏获取信息和通信的途径,这些信息和通信可用于决策和开拓新市场。在本文中,根据我们在印度和中美洲设计农业信息系统的经验,我们提供了一个框架,用于理解农业价值链中利益相关者之间的沟通,重点关注小生产者的需求。首先,我们概述了利益相关者的主要类型——包括农民、消费者、中介机构和各种支持组织。然后,我们调查了支持利益相关者之间沟通的信息系统的主要类别,重点关注那些涉及小农的信息系统。基于这项调查,我们对农业价值链中的信息流进行了以下分类:1)链接到链接(L2L):协调价值链上农产品的销售、移动和分配所需的信息流;2)点对点(P2P):同一利益相关者群体成员之间分享知识和经验所需的通信,以及为该利益相关者群体服务的专家社区;3)端到端(E2E)。生产者和消费者之间的联系,例如,促进非经济价值的交换,作为市场定价的外部投入(例如,核证)。我们概述了当前信息系统难以覆盖小生产者的一些原因,并强调了一些技术趋势,这些趋势可能有助于提高生产者和消费者之间以及各自利益相关者社区内通信的保真度和可及性。
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引用次数: 83
Electoral competition and digital development in India and South Africa 印度和南非的选举竞争和数字发展
Jennifer Bussell
In the last decade many developing country governments made efforts to improve service delivery and access to information through the use of new information and communication technologies (ICTs). The character of these efforts, however, varies widely both across and within countries, resulting in continued inequality to access. What incentives influenced the initiation of these projects? How might variation in these incentives have affected the projects themselves? To answer these questions I compare the efforts of sub-national governments in India and South Africa to implement ICT-enabled service centers. In particular I consider what factors led to the implementation of ICT initiatives in urban versus rural areas. I find that politicians use ICT projects to achieve specific electoral goals and thus electoral conditions, specifically the character of political competition and ruling party support bases, can help to explain decisions to implement service centers for rural or urban populations. I use the cases of Gujarat, Tamil Nadu and Andhra Pradesh in India and the Western Cape and Gauteng in South Africa to illustrate this argument.
在过去十年中,许多发展中国家政府通过使用新的信息和通信技术(ict)努力改善服务提供和信息获取。然而,这些努力的性质在国家之间和国家内部差别很大,导致获得服务的不平等现象持续存在。是什么激励因素影响了这些项目的启动?这些激励措施的变化如何影响到项目本身?为了回答这些问题,我比较了印度和南非地方政府实施信息通信技术服务中心的努力。我特别考虑了导致在城市和农村地区实施ICT举措的因素。我发现政治家使用ICT项目来达到特定的选举目标,因此选举条件,特别是政治竞争的性质和执政党的支持基础,可以帮助解释为农村或城市人口设立服务中心的决定。我以印度的古吉拉特邦、泰米尔纳德邦和安得拉邦以及南非的西开普省和豪登省为例来说明这一论点。
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引用次数: 7
Devising neutral tools for development decision-making: The Poverty Assessor 为发展决策设计中立的工具:贫困评估器
C. Heffernan, Jun Yu
Pro-poor decision-making demands that the communication channels between development actors and the poor are strengthened. However, effective decision-making also requires that the complexities and inter-relationships between household livelihood, demographic, and economic factors are understood. Therefore, the following paper describes the design and implementation of the Poverty Assessor, a software programme to aid practitioners, policy makers and researchers in visualizing the direct poverty impacts of specific livelihood factors and events among populations of poor livestock keepers. The software enables users to profile individuals in relation to the national poverty line in each of the countries involved by selecting from a range of demographic and livelihood indicators. The tool operates by retrieving information from a database derived from the voices of 5,372 poor households in Kenya, India and Bolivia. The paper begins by offering a brief background to the issues involved and the creation of the tool. In the second section, results are presented utilizing examples from the Bolivian study set.
有利于穷人的决策要求加强发展行动者与穷人之间的沟通渠道。然而,有效的决策还需要了解家庭生计、人口和经济因素之间的复杂性和相互关系。因此,本文描述了贫困评估器的设计和实施,这是一个软件程序,旨在帮助从业者、政策制定者和研究人员可视化特定生计因素和事件对贫困牲畜饲养者群体的直接贫困影响。该软件使用户能够通过从一系列人口和生计指标中进行选择,就每个有关国家的国家贫困线对个人进行概况分析。该工具通过从肯尼亚、印度和玻利维亚的5372个贫困家庭的声音数据库中检索信息来运行。本文首先简要介绍了所涉及的问题和该工具的创建的背景。在第二节中,利用玻利维亚研究集的例子介绍了结果。
{"title":"Devising neutral tools for development decision-making: The Poverty Assessor","authors":"C. Heffernan, Jun Yu","doi":"10.1109/ICTD.2007.4937411","DOIUrl":"https://doi.org/10.1109/ICTD.2007.4937411","url":null,"abstract":"Pro-poor decision-making demands that the communication channels between development actors and the poor are strengthened. However, effective decision-making also requires that the complexities and inter-relationships between household livelihood, demographic, and economic factors are understood. Therefore, the following paper describes the design and implementation of the Poverty Assessor, a software programme to aid practitioners, policy makers and researchers in visualizing the direct poverty impacts of specific livelihood factors and events among populations of poor livestock keepers. The software enables users to profile individuals in relation to the national poverty line in each of the countries involved by selecting from a range of demographic and livelihood indicators. The tool operates by retrieving information from a database derived from the voices of 5,372 poor households in Kenya, India and Bolivia. The paper begins by offering a brief background to the issues involved and the creation of the tool. In the second section, results are presented utilizing examples from the Bolivian study set.","PeriodicalId":299790,"journal":{"name":"2007 International Conference on Information and Communication Technologies and Development","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132914662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Community radio for development in South Asia: A sustainability study 南亚社区广播促进发展:可持续性研究
F. Hussain, Rahul Tongia
Community radio (CR) is a participatory medium and a subset of radio broadcasting. It is an inexpensive and popular way for disseminating content (information, news, entertainment, etc.) CR is designed to increase availability of localized information, media access and empowerment, and even market based growth and societal resource distribution for the community. We examine the sustainability of CR as a tool towards achieving the overall development in the South Asian region. A cross-country comparison of CR in areas including people's participation, regulatory scenarios, human resource development, technology usage trends, financial practices etc. shows a wide variety of CR applications and challenges. An indepth analysis of financial data and practices of several Nepalese CR stations (rural, urban, and semi-urban) alongside regulatory and anecdotal references from India and Bangladesh shows potential viability through advertising and other mechanisms. Even with an advertisement cap of 5 minutes per hour, every station shows the potential of achieving financial sustainability by selling a fraction of the allotted ad time (7%-46%). Our model shows that the monthly operating expenditure of types of stations turns out to be more significant than the annualized capital expenditure. In our analysis (and borne out in the real world), of the three considered stations, the semi-urban station has the highest cost per listener. Stochastic cost modeling of real world CR data show the trend of increased cost for content development is a trade-off for expanding the listener base and transmission time. We conclude with a proposed set of policy and operating recommendations to enable CR to play a significant role in overall South Asian development.
社区广播是一种参与性媒体,也是无线电广播的一个子集。它是传播内容(信息、新闻、娱乐等)的一种廉价且流行的方式。CR旨在增加本地化信息、媒体访问和授权的可用性,甚至是基于市场的增长和社区的社会资源分配。我们研究了社会责任作为实现南亚地区整体发展的工具的可持续性。对各国企业责任的比较,包括人民参与、监管情景、人力资源开发、技术使用趋势、金融实践等,显示了企业责任的广泛应用和挑战。对几个尼泊尔CR站(农村、城市和半城市)的财务数据和实践的深入分析,以及来自印度和孟加拉国的监管和轶事参考,表明通过广告和其他机制具有潜在的可行性。即使每小时的广告时间上限为5分钟,每个电台都显示出通过出售分配的广告时间的一小部分(7%-46%)来实现财务可持续性的潜力。我们的模型显示,不同类型加油站的月运营支出比年化资本支出更显著。在我们的分析中(并在现实世界中得到证实),在考虑的三个电台中,半城市电台的每位听众成本最高。现实世界CR数据的随机成本模型显示,内容开发成本增加的趋势是扩大听众基础和传播时间的权衡。最后,我们提出了一套政策和操作建议,以使CR在整个南亚发展中发挥重要作用。
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引用次数: 14
Design of early warning flood detection systems for developing countries 发展中国家洪水预警探测系统的设计
Elizabeth Basha, D. Rus
In developing countries, flooding due to natural disasters such as hurricanes and earthquakes results in massive loss of life and property. Warning communities of the incoming flood provides an effective solution to this by giving people sufficient time to evacuate and protect their property. However, the range of early warning system solutions introduces a tangle of conflicting requirements including cost and reliability, and creates several interesting problems from factors as diverse as technological, social, and political. The complexity of these systems and need for autonomy within the context of a developing country while remaining maintainable and accessible by non-technical personnel provides a challenge not often solved within developed countries, much less the developing. After describing this problem, the paper discusses a proposed solution for the problem, initial experiments in implementing the solution, and lessons learned through that work.
在发展中国家,飓风、地震等自然灾害引发的洪水造成了巨大的生命财产损失。警告社区即将到来的洪水提供了一个有效的解决方案,让人们有足够的时间撤离和保护他们的财产。然而,早期预警系统解决方案的范围引入了一系列相互冲突的要求,包括成本和可靠性,并从技术、社会和政治等多种因素中产生了一些有趣的问题。这些系统的复杂性和在发展中国家范围内的自主性需要,同时保持非技术人员的可维护性和可访问性,这在发达国家内往往得不到解决,更不用说发展中国家了。在描述了这个问题之后,本文讨论了该问题的建议解决方案,实现该解决方案的初步实验,以及通过该工作获得的经验教训。
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引用次数: 126
Digital Green: Participatory video for agricultural extension 数字绿色:农业推广的参与式视频
R. Gandhi, R. Veeraraghavan, K. Toyama, Vanaja Ramprasad
Digital green is a research project that seeks to disseminate targeted agricultural information to small and marginal farmers in India using digital video. The unique components of digital green are (1) a participatory process for content production, (2) a locally generated digital video database, (3) human-mediated instruction for dissemination and training, and (4) regimented sequencing to initiate a new community. Unlike some systems that expect information or communication technology alone to deliver useful knowledge to marginal farmers, digital green works with existing, people-based extension systems and aims to amplify their effectiveness. While video provides a point of focus, it is people and social dynamics that ultimately make digital green work. Local social networks are tapped to connect farmers with experts; the thrill of appearing "on TV" motivates farmers; and homophily is exploited to minimize the distance between teacher and learner. In a four-month trial involving 16 villages (1070 households), digital green was seen to increase adoption of certain agriculture practices by a factor of six to seven times over classical person-only agriculture extension. The hardware investment was a TV and a DVD-player per village, and one digital camera and PC shared among all 16 villages. These results are very preliminary, but promising.
数字绿色是一个研究项目,旨在通过数字视频向印度的小农和边缘农民传播有针对性的农业信息。数字绿色的独特组成部分是(1)内容生产的参与性过程,(2)本地生成的数字视频数据库,(3)传播和培训的人为指导,以及(4)启动新社区的有条理的排序。与一些指望仅靠信息或通信技术向边缘农民提供有用知识的系统不同,数字绿色与现有的、以人为本的推广系统一起工作,旨在扩大其有效性。虽然视频提供了一个焦点,但最终使数字绿色发挥作用的是人和社会动态。利用当地的社交网络将农民与专家联系起来;出现在“电视”上的兴奋刺激了农民;同质性被用来最小化老师和学生之间的距离。在一项涉及16个村庄(1070户)的为期4个月的试验中,数字绿色被视为将某些农业实践的采用率提高了6到7倍,而不是传统的个人农业推广。硬件投资是每个村庄一台电视和一台dvd播放机,16个村庄共用一台数码相机和一台个人电脑。这些结果是非常初步的,但很有希望。
{"title":"Digital Green: Participatory video for agricultural extension","authors":"R. Gandhi, R. Veeraraghavan, K. Toyama, Vanaja Ramprasad","doi":"10.1109/ICTD.2007.4937388","DOIUrl":"https://doi.org/10.1109/ICTD.2007.4937388","url":null,"abstract":"Digital green is a research project that seeks to disseminate targeted agricultural information to small and marginal farmers in India using digital video. The unique components of digital green are (1) a participatory process for content production, (2) a locally generated digital video database, (3) human-mediated instruction for dissemination and training, and (4) regimented sequencing to initiate a new community. Unlike some systems that expect information or communication technology alone to deliver useful knowledge to marginal farmers, digital green works with existing, people-based extension systems and aims to amplify their effectiveness. While video provides a point of focus, it is people and social dynamics that ultimately make digital green work. Local social networks are tapped to connect farmers with experts; the thrill of appearing \"on TV\" motivates farmers; and homophily is exploited to minimize the distance between teacher and learner. In a four-month trial involving 16 villages (1070 households), digital green was seen to increase adoption of certain agriculture practices by a factor of six to seven times over classical person-only agriculture extension. The hardware investment was a TV and a DVD-player per village, and one digital camera and PC shared among all 16 villages. These results are very preliminary, but promising.","PeriodicalId":299790,"journal":{"name":"2007 International Conference on Information and Communication Technologies and Development","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124540494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 218
期刊
2007 International Conference on Information and Communication Technologies and Development
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