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4981.离散流：一个可扩展的流处理的容错模型
[信息传输、软件和信息技术服务业] [2013-12-18]
Many “big data” applications need to act on data arriving in real time. However, current programming models for distributed stream processing are relatively low-level, often leaving the user to worry about consistency of state across the system and fault recovery. Furthermore, the models that provide fault recovery do so in an expensive manner, requiring either hot replication or long recovery times. We propose a new programming model, discretized streams (D-Streams), that offers a high-level functional API, strong consistency, and efficient fault recovery.
关键词：离散流；可扩展；容错模型；大数据；实时到达；故障恢复
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4982.探索您的InfoSphereBigInsights集群和示例应用程序
[信息传输、软件和信息技术服务业] [2013-12-18]
If you're looking to getting a quick start with "big data" projects involving IBM InfoSphere BigInsights, you'll want to become familiar with its integrated web console. Through this tool, you can explore the health of your cluster, navigate your distributed file system, launch IBM-supplied sample applications, monitor the status of jobs and workflows, and analyze data using a spreadsheet-style tool. This article takes you on a tour of the Web console, highlighting key capabilities that can help you get up to speed quickly.
关键词：大数据；spreadsheet-style；InfoSphere BigInsights集群；web控制台
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4983.开源不耐烦的大数据,第1部分:Hadoop教程:HelloWorld与Java,Pig,Hive,Flume,Fuse,Oozie和使用Informix,DB2,与MySQL的Sqoop——如何开始使用Hadoop和你最喜欢的数据库
[信息传输、软件和信息技术服务业] [2013-12-18]
This article is focused on explaining Big Data and then providing simple worked examples in Hadoop, the major open-source player in the Big Data space. You'll be happy to hear that Hadoop is NOT a replacement for Informix or DB2, but in fact plays nicely with the existing infrastructure. There are multiple components in the Hadoop family and this article will drill down to specific code samples that show the capabilities. No Elephants will stampede if you try these examples on your own PC.
关键词：Hadoop；大数据；开源播放器；开源数据
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4984.为亚波长厚的太阳能电池进行的陷光结构的电磁逆设计
[计算机、通信和其他电子设备制造业] [2013-12-18]
Light trapping in solar cells allows for increased eciency and reduced materials cost. It is well known that a 4n2 factor of enhancement in absorption can be achieved by randomly texturing the surface of the solar cell, where n is the refractive index of the material. However, this limit only holds when the thickness of the solar cell is much greater than the wavelength of light. In the subwavelength regime, the fundamental question remains unanswered: what surface texture realizes the optimal absorption enhancement? We turn to computational inverse electromagnetic design in order to nd nanoscale textures for light trapping, and observe spontaneous symmetry breaking in the creation of optimal design.
关键词：太阳能电池；电磁逆设计；陷光结构
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4985.硅纳米光电子集成
[计算机、通信和其他电子设备制造业] [2013-12-18]
Modern silicon technology offers unprecedented spatial and temporal control of electrons with high levels of integrated complexity. Integrating nanophotonic functionality onto silicon should then allow us to extend this level of control to photons. Resulting nanooptoelectronic systems will inevitably create new functionality, which not only enables next-generation technologies like optical interconnects, but also gives rise to yet unforeseen applications.
关键词：硅；纳米光电子；集成
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4986.一种可实现对话分析的高精度，低延迟，可扩展的麦克风阵列系统
[信息传输、软件和信息技术服务业] [2013-12-18]
Understanding and facilitating real-life social interaction is a high-impact goal for ubiquitous computing research. Microphone arrays offer the unique capability to provide continuous, calm capture of verbal interaction in large physical spaces, such as homes and especially open-plan offices. Most microphone array work has focused on arrays of custom sensors in small spaces, and a few recent works have tested small arrays of commodity sensors in single rooms. This thesis describes the first working scalable and cost-effective array infrastructure that offers highprecision localization of conversational speech, and hence enables ongoing studies of verbal interactions in large semi-structured spaces.
关键词：对话分析；麦克风阵列系统；普适计算
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4987.带带隧穿晶体管：可扩展性和电路的性能
[计算机、通信和其他电子设备制造业] [2013-12-18]
Continuing scaling of transistors as density approaches the terascale regime (1012 devices/cm2) requires evaluating new devices that can perform on several metrics beyond density scaling, such as cost savings, performance improvements, and energy efficiency. A comprehensive review and evaluation of potential new devices is performed. Metrics such as processing cost, plan-view area scaling, and stage delay are benchmarked. One of the most promising devices, tunneling field effect transistors, is also the most confounding, as simulation and experimental results are orders of magnitude apart.
关键词：隧穿晶体管；可扩展性；电路性能
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4988.跟随电子：商业建筑电源管理的方法
[信息传输、软件和信息技术服务业] [2013-12-18]
Commercial buildings are significant consumers of electricity. The first step towards better energy management in commercial buildings is monitoring consumption. However, instrumenting every electrical panel in a large commercial building is expensive and wasteful. In this paper, we propose a greedy meter (sensor) placement algorithm based on maximization of information gained, subject to a cost constraint. The algorithm provides a near-optimal solution guarantee. Furthermore, to identify power saving opportunities, we use an unsupervised anomaly detection technique based on a low-dimensional embedding. Further, to better manage resources such as lighting and HVAC, we propose a semi-supervised approach combining hidden Markov models (HMM) and a standard classifier to model occupancy based on readily available port-level network statistics.
关键词：电源管理；测点布置；异常检测；占用建模；商业建筑
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4989.IBM的开放云架构
[信息传输、软件和信息技术服务业] [2013-12-18]
By changing how business and society run, cloud computing is opening up huge avenues ofinnovation. Developers are now combining systems of record with systems of engagement,and a new style of cloud-based application is emerging: systems of interaction. For theseapplications to be sustainable, cloud computing needs to be built on open source and openstandards. This article lays the groundwork.
关键词：堆；软件；云架构；云计算
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4990.验证和动态转换的JSON有效载荷为基于云的应用
[信息传输、软件和信息技术服务业] [2013-12-18]
This article presents a solution architecture that facilitates JavaScript Object Notation (JSON)validation and transformation for the benefit of cloud consumers and cloud service providers.A JVAX (JSON Verification and Conversion/Transformation) system handles all incomingrequests before the cloud service receives them. JVAX is designed to address several commonproblems that can occur when JSON is the payload for an API request.
关键词：设计；模式；配置选择；云计算
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