This test was conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project. This project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. Several turbines were selected for testing at the National Renewable Energy Laboratory's (NREL) National Wind Technology Center (NWTC) as a part of the Small Wind Turbine Independent Testing project. Acoustic noise testing is one of up to five tests that may be performed on the turbines. Other tests include duration, safety and function, power performance, and power quality. Viryd Technologies, Inc. of Austin, Texas, was the recipient of the DOE grant and provided the turbine for testing.

关键词：风能；风力发电机；声学噪声发生器；噪声测量

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Access Point (AP) selection is an important problem in WLANs as it a ects the throughput of the joining station (STA). Existing approaches to AP selection predominantly use received signal power and as such, do not take into account interference and collisions at each STA, and transmit opportunities (TXOPs) at APs. In this paper, we propose a class of AP selection algorithms based on the joining STA's ex- pected throughput by taking into account the above factors. Speci cally, we collect a binary-valued local channel occupancy signal, called busy-idle (BI) signal, at each node and require the APs to periodically broadcast their BI signal together with a quantity that represents TXOPs at the APs. This enables the joining STA to estimate expected throughput for each candidate AP before it selects one. To capture TXOPs at each AP, we propose a few di erent quantities, including the number of associated STAs, sum of inverse of MAC rates, and the average waiting and idle times. We use NS-2 simulations to demonstrate the e ectiveness of our algorithms. For a random topology consisting of 24 APs and 60 STAs, our algorithms can increase average throughput of the joining STA by as much as 52% as compared to the tradi- tional signal power based AP selection approach (rxpwr). In this case, the achieved average throughput is 97% of that obtained via the optimal selection. We also show that, in contrast to rxpwr, the throughput of our proposed algorithms remain close to optimal with the increase in AP density or STA density.

关键词：无线局域网;接入点;常态接合站;吞吐量

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A dual flow-path inlet system is being tested to evaluate methodologies for a Turbine Based Combined Cycle (TBCC) propulsion system to perform a controlled inlet mode transition. Prior to experimental testing, simulation models are used to test, debug, and validate potential control algorithms. One simulation package being used for testing is the High Mach Transient Engine Cycle Code simulation, known as HiTECC. This paper discusses the closed loop control system, which utilizes a shock location sensor to improve inlet performance and operability. Even though the shock location feedback has a coarse resolution, the feedback allows for a reduction in steady state error and, in some cases, better performance than with previous proposed pressure ratio based methods. This paper demonstrates the design and benefit with the implementation of a proportional-integral controller, an H-Infinity based controller, and a disturbance observer based controller.

关键词：进气道流；控制器；反馈控制；计算机仿真；涡轮发动机

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The TDOA localization algorithm for wireless sensor networks can help us measure the time differences of an unknown node to more anchor nodes,which establish nonlinear equation of the differential distance between unknown node and anchor node.Newton iteration is the crucial method for nonlinear equation numerical solutions,so using the Newton iterative method can better achieve nonlinear optimization in TDOA location.The simulation results indicate that the algorithm can meet the requirement of localization and possesses the preferable localization precision.

关键词：无线传感器网络；牛顿迭代；非线性；到达时差定位

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With the development of the computer wireless communication technology,wireless sensor detection is being widely applied to engineering practice.Combined with the advantages and disadvantages of the two algorithms LEACH and PEGASIS,this paper proposes a new algorithm BEAHR algorithm.At the same time,this paper establishes mathematical model algorithm of wireless network detection energy consumption for BEAHR algorithm.Finally,this paper calculates the numerical value of the three algorithms LEACH,PEGASIS and BEAHR by using the general numerical simulation software of MATLAB software.Through the numerical simulation experiments,it is found that with the increase of time,the average energy consumption of three algorithms will also be increased.Among them,the fastest increase of energy consumption is LEAC.However,the energy consumption of BEAHR algorithm is small.When the time is 1000 s,power consumption is 0.5 J,which verifies the validity and reliability of BEAHR algorithm and proves that BEAHR algorithm has the excellent performance to save energy and improve the network life cycle.

关键词：无线传感器；BEAHR算法；能耗模型；无线检测网络；MATLAB软件；网络生命周期

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According to the comparability between the process of the multi-sensor information fusion and the human information disposal,the psycho-physical factor and its effect on the uncertainties of driving behavior are considered.The psycho-physical integrated cognitive topological structure is researched,and the cognitive activity chain of driving task-centralization is studied in the multi-resource information fusion,as well as discussed the driving decision-making behavior and the running mechanism of vehicle.The aim of researching the driving cooperative mechanism can offer the he theory guidance for the microscopic simulation and the intelligent vehicle development of intelligent transportation systems.

关键词：信息融合；综合认知拓扑结构；驱动；多源

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A comparison of satellite-derived solar resource with nine high-quality, ground-based solar radiation measurements from NOAA's Surface Radiation (SURFRAD) Network, the Integrated Surface Insolation Study (ISIS) Network, the Solar Radiation Research Laboratory (SRRL) at NREL, and DOE's Solar Resource and Meteorological Assessment Project (SOLRMAP) program was conducted. The comparison was made using data from 2009 for various locations. Our results showed that the satellite-based method underpredicted both global horizontal irradiance (GHI) and direct normal irradiance (DNI). GHI values were underestimated by about 13to 22for the stations located in a desert environment, such as Desert Rock, Nevada, and SOLRMAP stations located around southwest Nevada and Arizona. We found that the Satellite Algorithm for Shortwave Radiation Budget (SASRAB) radiative transfer model caused the underprediction of GHI and DNI, especially in clear-sky situations and low zenith angles (around solar noon). Using other radiative transfer algorithms reduced the bias from SASRAB, and it is expected that the accuracy of the satellite-based product will significantly improve with the introduction of a high-quality, radiative transfer model. Future work will aim to reduce the biases by using better input parameters and applying these parameters to a better, simple, clear-sky radiative transfer model that properly accounts for the parameters.

关键词：太阳辐射；辐射传输；太阳能；参数

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This technical memorandum is to summarize the Formulation Study conducted during fiscal year 2012 on the High Temperature Boost (HTB) Power Processing Unit (PPU). The effort is authorized and supported by the Game Changing Technology Division, NASA Office of the Chief Technologist. NASA center participation during the formulation includes LaRC, KSC and JPL. The Formulation Study continues into fiscal year 2013. The formulation study has focused on the power processing unit. The team has proposed a modular, power scalable, and new technology enabled High Temperature Boost (HTB) PPU, which has 5-10X improvement in PPU specific power/mass and over 30in-space solar electric system mass saving.

关键词：电力系统；耐高温；硅碳化物；阳能系统

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This test was conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project. This project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small wind turbines. Five turbines were tested at the National Wind Technology Center (NWTC) at the National Renewable Energy Laboratory (NREL) as a part of round one of this project. Duration testing is one of up to five tests that may be performed on the turbines, including power performance, safety and function, noise, and power quality. Test results will provide manufacturers with reports that can be used to fulfill part of the requirements for small wind turbine certification.

关键词：风能;风力发电机;持续时间测试;绩效评估;可再生能源

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Most cancer-related deaths arise from metastasis produced by circulating tumor cells (CTCs). A new concept of this research is that circulating cancer stem cell (CSC)-platelet aggregates (CSCPA) represent the most aggressive subset of CTCs responsible for breast cancer metastasis. The goal of this proposal is to identify and count CSCPAs in vivo in preclinical models of metastatic breast cancer, and to define the correlation of CSCPA amount with metastasis development. We developed a novel, in vivo multicolor photoacoustic (PA) flow cytometry (PAFC) platform for the detection of CSCPAs using the principle of flow cytometry, negative and positive PA contrasts, multispectral high-pulse-repetition-rate lasers, bioconjugated nanoparticles and a mouse model of human breast cancer. Using this approach, we provided a proof-of-concept for highly sensitive detection of CSCPAs and individual CSCs in real biological environments in a whole body in vivo. For the first time, we demonstrated the ability of CSCs to form aggregates with platelets (CSCPAs) in blood circulation of tumorbearing mice. Furthermore we showed that the number of CSCPAs increased during development of metastatic disease. Obtained preclinical results can advance general understanding of cancer stem cell biology and metastasis progression as well as will be used as the basis for initiating highly innovative clinical research in cancer patients.

关键词：医药；血小板；乳腺癌；临床医学

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