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Development of mobile-based hand vein biometrics for global health patient identification 基于移动的手部静脉生物识别技术的发展,用于全球健康患者的识别
Pub Date : 2014-12-04 DOI: 10.1109/GHTC.2014.6970336
R. Fletcher, Varsha Raghavan, Rujia Zha, Miriam Haverkamp, P. Hibberd
For many health services in developing countries, patient identification is a fundamental need. In countries where no standard form of identification is available, this problem is exacerbated by a lack of literacy and also frequent errors in spelling and consistency. To address this need, we implemented two low-cost hand vein scanner devices for use with mobile devices. The first scanner device employs the internal camera of the an Android smart phone along with a rechargeable infrared light (850nm) and an external optical filter; and the second scanner device employs a low-cost webcam, with integrated LEDs (940nm) and optical filter, which is powered directly from the Android tablet. A single mobile app was developed for use with both scanner devices with the ability to adjust scanner settings, capture hand palm images, and annotate patient data. As an initial test of our scanner designs, we collected hand scans from 51 university students aged 18-34 using an IRB-approved protocol, and data was processed using a 2D-PCA biometric algorithm implemented on a PC using MATLAB software. Using the standard FAR-FRR curve for biometric analysis, we were able to achieve an Equivalent Error Rate (EER) of 6.3% for the phone camera scanner, and 4.2% for the webcam scanner design. These results compare favorably with other published biometrics studies and demonstrate the potential of low-cost biometric devices that can be integrated with mobile phones and tablets.
对于发展中国家的许多卫生服务机构来说,患者身份识别是一项基本需求。在没有标准身份识别形式的国家,由于缺乏读写能力以及拼写和一致性方面的频繁错误,这一问题更加严重。为了满足这一需求,我们实施了两种低成本的手部静脉扫描设备,用于移动设备。第一种扫描器装置采用Android智能手机的内部摄像头以及可充电红外光(850nm)和外部滤光片;第二个扫描设备采用低成本的网络摄像头,集成了led (940nm)和光学滤光片,直接由安卓平板电脑供电。开发了一个移动应用程序,用于两种扫描仪设备,具有调整扫描仪设置,捕获手掌图像和注释患者数据的能力。作为我们扫描仪设计的初步测试,我们使用irb批准的协议收集了51名18-34岁大学生的手部扫描,并使用MATLAB软件在PC上实现的2D-PCA生物识别算法处理数据。使用标准FAR-FRR曲线进行生物识别分析,我们能够实现手机摄像头扫描仪的等效错误率(EER)为6.3%,网络摄像头扫描仪设计为4.2%。这些结果与其他已发表的生物识别研究结果相比较有利,并展示了可与移动电话和平板电脑集成的低成本生物识别设备的潜力。
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引用次数: 15
Scalable DC Micro Grids provide cost effective electricity in regions without electric infrastructure 可扩展的直流微电网在没有电力基础设施的地区提供具有成本效益的电力
Pub Date : 2014-12-04 DOI: 10.1109/GHTC.2014.6970255
F. Sharp, D. Symanski, Mark S. Dudzinski
More than 1.2 billion people around the world live without electricity. The traditional utility approach to providing electricity using central generation, transmission and distribution is expensive. The World Bank estimates that it will take a trillion dollars through 2030 to solve this energy poverty. There is no economic model that will support this level of investment. DC Micro Grids are a cost effective way to provide the basic functions of electricity at a fraction of the cost of traditional electric delivery. This paper describes a scalable DC micro-grid. It is designed to be deployed in an individual residence/building. These buildings can then be interconnected into a self-sufficient larger DC grid. Long term, this larger DC grid holds the potential of being connected to existing utilities distribution systems. It includes renewable generation and energy storage assets which can provide sufficient electricity to power LED Lighting, cell phone charging, radio, TV, portable computers, water pumping and cooking. The DC micro-grid architecture, operation, performance and limitations are currently described and quantified. System cost is compared to traditional electric power delivery models in undeveloped regions.
全世界有超过12亿人没有电。通过集中发电、输电和配电来提供电力的传统公用事业方法是昂贵的。世界银行估计,到2030年,解决这一能源贫困问题将需要1万亿美元。没有任何经济模式能够支持这种投资水平。直流微电网是一种具有成本效益的方式,以传统电力输送成本的一小部分提供电力的基本功能。本文描述了一种可扩展的直流微电网。它被设计为部署在个人住宅/建筑物中。然后,这些建筑可以相互连接成一个自给自足的更大的直流电网。从长远来看,这个更大的直流电网具有连接到现有公用事业配电系统的潜力。它包括可再生能源发电和能源存储资产,可以为LED照明、手机充电、收音机、电视、便携式电脑、抽水和烹饪提供足够的电力。目前对直流微电网的结构、运行、性能和局限性进行了描述和量化。将系统成本与欠发达地区的传统电力输送模式进行了比较。
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引用次数: 14
Potentials of biogas production and GHG mitigation in Guatemalan dairy farms 危地马拉奶牛场沼气生产和温室气体减排的潜力
Pub Date : 2014-12-04 DOI: 10.1109/GHTC.2014.6970328
Nicole D. Miranda, Andres Chicol, M. Mcculloch
This work presents results of a survey of case studies to quantify the potential energy production and GHG emission changes of anaerobically digesting (AD) cattle manure in three Guatemalan dairy farms. Livestock inventory and energy consumption data were collected and used to define three scenarios for each farm: baseline, AD with condensing boiler (AD-boiler) and AD with combined heat and power unit (AD-CHP). The estimated emissions account for enteric fermentation, manure/digestate handling, import/export of thermal energy and electricity and use of fossil fuels for transport. The AD systems result in a production of 100±37 kgCH4 · head-1 · yr-1. If this CH4 is combusted in the AD-boiler scenarios, 5.00±1.59 GJ · head-1 · yr-1 of thermal energy is generated and emissions from baseline scenarios are offset by 600±280 kgCO2e · head-1 · yr-1. The generated heat is sufficient to operate digesters (308 K) and export 2.90±0.62 GJ · head-1 · yr-1. Challenges are found to use that thermal power because domestic heating is inessential. ADCHP is found to be more suitable because it produces sufficient thermal energy for the digesters (2.50±0.80 GJ · head-1 · yr-1) while generating electric power (1.80±0.57 GJ · head-1 · yr-1). This scenario could promote the welfare of neighboring communities by making sustainable electricity available. AD-CHP could offset 400±320 kgCO2e ·head-1 · yr-1 from the baselines.
这项工作提出了一项案例研究的调查结果,以量化危地马拉三个奶牛场厌氧消化(AD)牛粪的潜在能源生产和温室气体排放变化。收集牲畜存栏和能源消耗数据,并用于确定每个农场的三种情景:基线情景、使用冷凝锅炉(AD-boiler)的AD情景和使用热电联产机组(AD- chp)的AD情景。估计的排放量包括肠道发酵、粪便/消化物处理、热能和电力的进出口以及运输使用化石燃料。AD系统的产量为100±37 kgCH4·头-1·年-1。如果这些CH4在ad-锅炉情景下燃烧,将产生5.00±1.59 GJ·head-1·年-1的热能,基线情景的排放将被600±280 kgCO2e·head-1·年-1抵消。产生的热量足以运行蒸煮器(308 K),输出2.90±0.62 GJ·水头-1·年-1。人们发现使用这种热能存在挑战,因为家庭供暖并不重要。ADCHP在产生电能(1.80±0.57 GJ·水头-1·年-1)的同时为蒸煮池提供足够的热能(2.50±0.80 GJ·水头-1·年-1),因此更适合ADCHP。这种情况可以通过提供可持续的电力来促进邻近社区的福利。AD-CHP可从基线抵消400±320 kgCO2e·head-1·year -1。
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引用次数: 2
Field technical surveys: An essential tool for improving critical infrastructure and lifeline systems resiliency to disasters 实地技术调查:改善关键基础设施和生命线系统抗灾能力的重要工具
Pub Date : 2014-12-04 DOI: 10.1109/GHTC.2014.6970264
A. Kwasinski
This paper explores critical infrastructure resiliency. The discussion initially introduces concepts and notions that are important for the analysis. Disasters are not seen as a single event but rather as cycles with distinct phases. These concepts and notions support the conclusion that critical infrastructures are cyber-physical-social systems that have not only interconnected physical components but also include processes as an integral constituting part. The discussion also indicates that the reliability concept of availability can be used as a metric for resiliency and for characterizing degree of dependence among infrastructures. Such metric allows a quantifiable approach for critical infrastructures planning and operation. Field technical surveys are then seen as a key tool to be able to quantify availability and, thus, assess resiliency. Finally, this paper explains approaches to conduct field technical surveys and their steps.
本文探讨了关键基础设施的弹性。讨论首先介绍了对分析很重要的概念和概念。灾害不被视为单一事件,而是具有不同阶段的循环。这些概念和概念支持这样的结论:关键基础设施是网络-物理-社会系统,不仅具有相互连接的物理组件,而且还包括作为一个整体组成部分的过程。讨论还表明,可用性的可靠性概念可以用作弹性和表征基础设施之间依赖程度的度量。这样的度量为关键基础设施的规划和操作提供了可量化的方法。然后,现场技术调查被视为能够量化可用性并因此评估弹性的关键工具。最后,阐述了开展现场技术调查的方法和步骤。
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引用次数: 17
Effective utilization of low cost incineration and its by-products in India 印度低成本焚烧及其副产品的有效利用
Pub Date : 2014-12-04 DOI: 10.1109/GHTC.2014.6970356
S. Nigam, A. Usman, B. Divakar
The waste material collection is piling up every day in almost all the cities of India and creating hazardous situation in terms of pollution. Due to this the average life span of living beings has deteriorated to a great extent. Our main aim is to utilize these waste materials in an effective way to help mankind by the process of incineration and have a clean recycle. Incineration is the best process of combustion of Organic materials present in the waste and giving useful byproducts. The by-products of incineration are heat, flue gases and ash. This paper has made an attempt in highlighting the proper use of those products. The effective use of these by products can be generation of electricity, growth in the production of crops, producing Liquefied Petroleum Gas and other construction purpose which have been laid stress by the authors taking under consideration some metro cities of India. The attempt as an assessment has been made to bring in awareness about the effective utilization of low cost incineration.
在印度几乎所有的城市,垃圾收集每天都在堆积,造成了污染的危险局面。因此,生物的平均寿命在很大程度上恶化了。我们的主要目的是利用这些废物,以有效的方式帮助人类通过焚烧的过程,并有一个干净的回收。焚烧是燃烧废物中存在的有机物质并产生有用副产品的最佳方法。焚烧的副产品是热量、烟道气和灰。本文试图突出这些产品的正确使用。这些副产品的有效利用可以用于发电、增加作物产量、生产液化石油气和其他建设目的,作者在考虑印度的一些地铁城市时强调了这一点。作为一项评估,已试图提高人们对低成本焚烧的有效利用的认识。
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引用次数: 5
Using tablets and satellite-based internet to deliver numeracy education to marginalized children in a developing country 利用平板电脑和卫星互联网为发展中国家的边缘儿童提供算术教育
Pub Date : 2014-12-04 DOI: 10.1109/GHTC.2014.6970295
I. Zualkernan, Shirin Lutfeali, Asad Karim
The intervention presented in this paper is premised on a theory of change that stipulates that learning outcomes in marginalized communities can be improved by a holistic just-in-time approach with a tight feedback loop that addresses children, parents and the community simultaneously. In this intervention a satellite-enabled traveling van visits a cluster of schools once every two weeks. During this visit, teachers in cluster schools are provided numeracy training through remote tutoring. In addition, each teacher is provided with an Android tablet containing content and assessments for children. During the two weeks, the teacher collects assessment data from the children using the Android tablet. In addition, Stalling's videos of teacher's classroom behavior are recorded and analyzed by master trainers on a monthly basis. Teachers and school committees are kept informed about their children's progress via SMS messages. The intervention targeted 24 schools in four clusters for one academic year in Pakistan. EGMA type tests were used to establish baseline and endline results for Grade 2 students. The results are that medium learning effects were achieved.
本文提出的干预措施以变革理论为前提,该理论规定,边缘化社区的学习成果可以通过一种全面的及时方法得到改善,这种方法具有紧密的反馈循环,同时针对儿童、父母和社区。在这项干预中,一辆搭载卫星的旅行面包车每两周访问一组学校。在访问期间,通过远程辅导的方式对集群学校的教师进行了算术培训。此外,每位教师都配备了一个Android平板电脑,其中包含针对儿童的内容和评估。在两周的时间里,老师使用安卓平板电脑收集孩子们的评估数据。此外,斯托林的教师课堂行为视频,每月由培训师进行记录和分析。教师和学校委员会通过短信随时了解他们孩子的进展情况。在巴基斯坦的一个学年里,该干预措施针对四组24所学校。采用EGMA型测验建立二年级学生的基线和终点结果。结果表明:学习效果达到中等。
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引用次数: 6
Process modeling and evaluation of a pilot healthcare technology solution in slum communities 贫民窟社区试点医疗保健技术解决方案的过程建模和评估
Pub Date : 2014-12-04 DOI: 10.1109/GHTC.2014.6970286
Sudipto Banerjee, A. Zalzala, Laura Zalzala
This paper reports on modeling, analyzing and evaluating a technology healthcare solution deployed for a slum community in Gujarat, India, and allows for electronic records management and tracking of patients using identification cards. The study focuses on understanding the field processes associated with the healthcare solution and the involved activities and participants. The paper presents detailed models of all processes, along with data requirements including different factors and rules associated with data organization. The analysis highlighted the major pros and cons associated with various processes, and reports on operational costs, cycle time, people skills, community confidence, and medical and technical education.
本文报告了为印度古吉拉特邦贫民窟社区部署的技术医疗保健解决方案的建模、分析和评估,并允许使用身份证进行电子记录管理和跟踪患者。本研究的重点是了解与医疗保健解决方案相关的现场流程以及所涉及的活动和参与者。本文给出了所有过程的详细模型,以及数据需求,包括与数据组织相关的不同因素和规则。分析强调了与各种流程相关的主要利弊,并报告了业务成本、周期时间、人员技能、社区信心以及医疗和技术教育。
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引用次数: 0
Consumer investment in watt-scale energy products 消费者对瓦级能源产品的投资
Pub Date : 2014-12-04 DOI: 10.1109/GHTC.2014.6970280
D. Soto
1.3 Billion people will remain without electricity without significant investment in new energy services. The IEA shows that about half of these services need to be distributed energy to reach those beyond the grid. Current investment focuses on centralized power plants and grid expansion. In the absence of public funding, the unelectrified rural populations must rely on private financing. In this paper, I compare the financial returns from watt-scale consumer products for lighting and mobile phone charging and the available financing for consumers from microfinancing. A comparison of the avoided cost in kerosene or phone charging and the monthly payment for a product shows that microfinance loan payments often exceed the avoided cost. Many customers are not able to tolerate these higher recurring payments even though in the future they will have no payments. In the developed world, innovators create instruments that eliminate upfront costs for energy services and immediately reduce consumer energy expenses. Equivalent innovation in this space could speed adoption of these technologies in the developing world as well.
如果不大力投资新能源服务,13亿人仍将无电可用。国际能源署表示,这些服务中约有一半需要分布式能源才能到达电网以外的地区。目前的投资主要集中在集中式发电厂和电网扩建上。在缺乏公共资金的情况下,未通电的农村人口必须依靠私人融资。在本文中,我比较了瓦特级照明和移动电话充电消费产品的财务回报以及小额信贷为消费者提供的可用融资。煤油或手机充电所避免的成本与产品的月付款的比较表明,小额信贷贷款的支付往往超过了避免的成本。许多客户无法忍受这些更高的经常性付款,即使在未来他们将没有付款。在发达国家,创新者创造的工具消除了能源服务的前期成本,并立即降低了消费者的能源支出。这一领域的同等创新也可以加速发展中国家对这些技术的采用。
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引用次数: 1
Remote labs in developing countries an experience in Brazilian public education 发展中国家的远程实验室是巴西公共教育的一个经验
Pub Date : 2014-12-04 DOI: 10.1109/GHTC.2014.6970267
J. Simão, J. P. A. Lima, Willian Rochadel, J. B. Silva
This paper presents a study case about the application of low cost remote experiments in physics classes in Brazilian public schools. Practical activities are extremely important in teaching sciences; however, most Brazilian public schools do not have laboratories. Thus, remote experiments can be an efficient way to meet this need. The use of open source tools is an alternative to proprietary technologies, turning possible remote labs cheaper than hands-on labs or other modalities of remote labs. The architecture proposed allows access via computers or mobile devices making use of PHP, HTML5 and JavaScript. The user can control variables of the experiments, and see the results in real-time via video streaming. This technology was applied experimentally in physics classes of two public basic schools in Brazil.
本文介绍了在巴西公立学校物理课堂上应用低成本远程实验的研究案例。实践活动在科学教学中极为重要;然而,大多数巴西公立学校没有实验室。因此,远程实验是满足这一需求的有效途径。开源工具的使用是专有技术的一种替代方案,可以使远程实验室比动手实验室或其他形式的远程实验室更便宜。该架构允许使用PHP、HTML5和JavaScript通过计算机或移动设备访问。用户可以控制实验变量,并通过视频流实时查看实验结果。该技术在巴西两所公立基础学校的物理课堂上进行了实验应用。
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引用次数: 3
An Interactive Nutritional Guide to develop low-cost healthy meals while sustaining indigenous foods 互动式营养指南,开发低成本健康膳食,同时维持土著食物
Pub Date : 2014-12-04 DOI: 10.1109/GHTC.2014.6970274
Krista Liguori, A. Nassar, Khanjan Mehta
In much of the developing world, indigenous crops are being replaced by non-indigenous varieties. Though potentially more profitable for large, commercial farms, these non-indigenous crops require unsustainable agricultural practices, are less resistant to pests and disease, result in less crop diversity and are less nutritious. This hurts local livelihoods and health while threatening the survival of culture. To encourage the adoption and use of indigenous ingredients, we have developed a framework for a software application: the Interactive Nutritional Guide. This tool identifies crops indigenous to the user's location, presents last-known pricing data, promotes recipes utilizing indigenous foods and suggests indigenous replacements for non-indigenous ingredients. With the intention of launching the application in East Africa, indigenous crops have been identified from literature and consultations with locals. A preliminary database of indigenous recipes and algorithms for ingredient substitution has also been developed along with a strategy for price updates based on user feedback. The Interactive Nutritional Guide is transferable into a mobile application, of significant implication in the developing world where cellphones are increasingly popular. In this article, we present our developments along with a vision aimed at empowering local entrepreneurs to consciously select local, nutritious, and environmentally friendly foods.
在许多发展中国家,本土作物正被非本土品种所取代。虽然对大型商业农场来说,这些非本地作物可能更有利可图,但它们需要不可持续的农业做法,对病虫害的抵抗力较差,导致作物多样性减少,营养不足。这损害了当地的生计和健康,同时威胁到文化的生存。为了鼓励采用和使用本土食材,我们开发了一个软件应用框架:交互式营养指南。该工具可以识别用户所在地的本地作物,提供最新的价格数据,推广使用本地食品的食谱,并建议用本地替代非本地成分。为了在东非启动应用程序,已经从文献和与当地人的磋商中确定了本地作物。还建立了一个土著食谱和配料替代算法的初步数据库,并制定了根据用户反馈更新价格的战略。互动式营养指南可转换为移动应用程序,这对手机日益普及的发展中国家具有重要意义。在这篇文章中,我们展示了我们的发展,并提出了一个愿景,旨在使当地企业家能够有意识地选择当地的、有营养的、环保的食品。
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引用次数: 1
期刊
IEEE Global Humanitarian Technology Conference (GHTC 2014)
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