Over the past three decades the Town of Hull, MA has solidified its place in U.S. wind energy history through its leadership in community-based generation. This is illustrated by its commissioning of the first commercial-scale wind turbine on the Atlantic coastline, the first suburban-sited turbine in the continental United States, pursuit of community-based offshore wind, and its push toward creating an energy independent community.

关键词：风能；风电；风力涡轮机

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Shaft guide is detected mainly by a static test method,but it need much time to detect and practical experience of the technical person for most of the mine.This paper designs a testing system based on matlab to solve this problem and introduces the system's survey principle.The dynamic parameters of shaft is measured by tilt sensors,acceleration transducer and displacement sensor separately,the relations between the shaft rigid's parameters and breakdown is analysed.The selection and design of hardware system is rational as well as software's function,the system has strong practicability.

关键词：轴向导；传感器；检测

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The uncertainty and variability associated with photovoltaic (PV) generation make it very challenging to balance power system generation and load, especially for high penetration cases. Higher reserve requirements and more cycling of conventional generators are generally anticipated for large-scale PV integration. However, whether the existing generation fleet is flexible enough to handle the variations and how well the system can maintain its control performance are difficult to predict. The goal of this project is to develop a software program that can perform intra-hour dispatch and automatic generation control (AGC) simulation, by which the balancing operations of a system can be simulated to answer the questions posed above. The simulator, named Electric System Intra-Hour Operation Simulator (ESIOS), uses the NV Energy southern system as a study case, and models the systems generator configurations, AGC functions, and operator actions used to balance system generation and load. Actual dispatch of AGC generators and control performance under various PV penetration levels were assessed by running ESIOS. The results could provide system operators with more insights on what to expect with different amount of PV generation in the system. This report describes the design of the simulator and presents the study results.

关键词：电力系统；光伏电源；配置；可再生能源

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β-type titanium alloys comprising low cost elements such as Fe, Mn, Cr, Sn, Al, O and N and having low Young's modulus are currently being developed. Examples of such alloys include Ti-10Cr-Al, Ti-Mn, Ti-Mn-Fe, Ti-Mn-Al, Ti-Cr-Al, Ti-Sn-Cr, Ti-Cr-Sn-Zr, Ti-(Cr, Mn)-Sn, and Ti-12Cr. Ti-5Fe-3Nb-3Zr belongs to that class of titanium alloys in which rare metals such as Nb, Ta, and Zr have been reduced using Fe. Ti-5Fe-3Nb-3Zr has a Young's modulus of around 76 GPa and has greater strength than that of Ti-6Al-4V ELI for biomedical applications. The characteristics of Ti-5Fe-3Nb-3Zr and other low-cost beta-type titanium alloys with low Young's moduli are discussed from the viewpoint of biomedical applications.

关键词：β型钛合金；低杨氏模量；;廉价的元素；普通金属；间隙元素

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With the constant expansion of the power system and the popularity of WAMS system,to analyze the stability of power system based on WAMS data has become a hotspot studied at present.This paper researches the methods to rapidly extract the critical electrical characters of the power system in fault condition.Principal component analysis is used to extract transient characters of power system,and the results are used in the transient stabilityassessment,proving the effectiveness of this method.

关键词：电力系统；主成分分析；暂态稳定评估

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The Coverage and Analysis Group at the Centers for Medicare and Medicaid Services (CMS) requested that the Technology Assessment Program (TAP) of the Agency for Healthcare Research and Quality (AHRQ) conduct an update of genetic tests for cancer condition

关键词：遗传学；癌症；技术评估；遗传检测；临床医学

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Epilepsy is a common, disabling problem in patients with tuberous sclerosis complex (TSC) and is usually intractable to available treatments. This Exploration-Hypothesis Development Award investigates the hypothesis that inflammation contributes to epileptogenesis in an animal model of TSC and that anti-inflammatory drugs may represent rational, effective therapies for epilepsy in TSC. In the first grant year, we have identified a series of inflammatory cytokines and chemokines, such as interferon IL1-beta and CXCL10, based on polymerase chain reaction, western blotting, and immunohistochemistry, which are elevated in a mouse model of TSC. Furthermore, these inflammatory markers could be reversed by the mammalian target of rapamycin (mTOR) inhibitor, rapamycin. These findings suggest that these inflammatory mediators could be involved in epileptogenesis in the mouse model and support the testing of anti-inflammatory agents that inhibit these mediators as potential treatments for epilepsy in the mice.

关键词：癫痫；炎症；抗炎剂；链反应；细胞因子

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This work derives the Cramer-Rao lower bound (CRLB) for an acoustic target and sensor localization system in which the noise characteristics depend on the location of the source. The system itself has been previously examined, but without deriving the CRLB and showing the statistical efficiency of the estimator used. Two different versions of the CRLB are derived, one in which direction of arrival (DOA) and range measurements are available (full-position CRLB), and one in which only DOA measurements are available (bearing-only CRLB). In both cases, the estimator is found to be statistically efficient; but, depending on the sensor-target geometry, the range measurements may or may not significantly contribute to the accuracy of target localization.

关键词：探测器；效率；噪声；统计

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NREL and Solar Power Industries will cooperate to evaluate technology for producing solar grade silicon from industrial waste of the phosphorus industry, as developed by the Institute of Physics and Technology (IPT), Kazakhstan. Evaluation will have a technical component to assess the material quality and a business component to assess the economics of the IPT process. The total amount of silicon produced by IPT is expected to be quite limited (50 kg), so evaluations will need to be done on relatively small quantities (5 kg/sample). Department of Energy (DOE) laboratories, including NREL, have been placing subcontracts for research and development services with scientific institutes in the Newly Independent States (NIS) under various DOE programs for many years.

关键词：硅太阳能电池；研究及开发；太阳能；技术评估

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Localization is a fundamental and essential issue for wireless sensor networks (WSNs).In this paper,we present a range-free region localization (RFRL) algorithm for static WSNs,in which each unknown node collects the location information of anchors within its two-hop distance,and then some location information of its one-hop anchors and two-hop anchors are chosen to implement a grid-scan algorithm.Analysis and simulation results show that our algorithm outperforms the other Grid-Scan schemes even when the communication radius is irregular.

关键词：无线传感器网络；定位；锚；网格扫描算法

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