Evaluation of Covariance Matrix Adaptation Evolution Strategy,Shuffled Complex Evolution and Firefly Algorithms for phase stability,phase equilibrium and chemical equilibrium problems

Phase equilibrium calculations and phase stability analysis of reactive and non-reactive systems play a significant role in the simulation, design and optimization of reaction and separation processes in chemical engineering. These challenging problems, which are often multivariable and non-convex, require global optimization methods for solving them. Stochastic global optimization algorithms have shown promise in providing reliable and efficient solutions for these thermodynamic problems. In this study, we evaluate three alternative global optimization algorithms for phase and chemical equilibrium calculations, namely, Covariant Matrix Adaptation-Evolution Strategy (CMA-ES), Shuffled Complex Evolution (SCE) and Firefly Algorithm (FA). The performance of these three stochastic algorithms was tested and compared to identify their relative strengths for phase equilibrium and phase stability problems. The phase equilibrium problems include both multi-component systems with and without chemical reactions. FA was found to be the most reliable among the three techniques, whereas CMA-ES can find the global minimum reliably and accurately even with a smaller number of iterations.     

A DESIGN OF 0.25μm CMOS SWITCH

Single-Pole Double-Throw （SPDT） broadband switch has been designed in a 0.25gm Complementary Metal Oxide Semiconductor （CMOS） process. To optimize the performance of isolation and insertion loss, based on normal design, the effects of Gate Series Resistances （GSR） on insertion loss and switching time are analyzed for the first time. The compatible GSRs are chosen by the analyses. The fabricated chips were tested and the results show the switch isolation from DC （Direct Current） to 1GHz exhibits 55dB and insertion loss lower than 2.1 dB.     

Conditioning to complex stimuli.

A research program is described dealing with behavior in a classical GSR conditioning situation. The empirical program is related "to the broader perspective of psychology in general." The research "affords a slim—but I hope stable—bridge between S-R learning theory and whatever is meant by perceptual theory." A rationale of assumptions is developed and on the basis of analysis predictions are formulated. "The present results are eminently consonant with an S-S interpretation of behavior… though I have attempted to make it consonant with S-R contiguity theory by employing the notion of internalized stimuli generated by responses to the conditioned stimulus." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

宽带IP城域网发展前景分析

宽带城域网建设正逐步由技术主导向用户和业务为主导过渡,这里对电信运营商面临的挑战,宽带业务的种类,用户对宽带业务的需求做了一些分析,认为基于客户需求的宽带IP城域网解决方案是城域网建设的发展方向。     

人体创口工具残留物的扫描电镜能谱检验法

本文通过设置合适的参数,使用扫描电镜X射线能谱GSR(即FEATURE)软件检验人体附着微小可疑残留物,借以形成人体致伤工具微量残留物检验方法,为人体损伤致伤物推断研究建立重要的技术方法.结果表明使用GSR(FEATURE)软件可定量检测到人体创口内微量工具残留物；通过对人体创伤工具残留物颗粒成分进行分析,可以全面解决人体残留致伤工具成份分析问题,为人体损伤致伤物推断研究建立关键理论技术基础;GSR(FEATURE)软件对于建立法医微量物证研究方法具有重要意义.     

无线地震采集系统在不同地区的应用实例

GSR是节点式无线地震采集系统,集无线、自主、节点式采集技术于一身。本文展示了三家用户使用GSR无线地震采集系统在土耳其、利比亚、阿根廷/智利边界、印尼巴布亚等世界四种不同地理环境的野外采集实例,并通过具体的实例来分析、探讨了节点式无线地震采集系统的优缺点。     

Effect of arid environment on radiative properties of greenhouse polyethylene cover

Degradation of the radiative properties of a 200 μm-polyethylene film caused by exposure to the harsh environment of Riyadh, Saudi Arabia has been investigated over a period of 13 months. Measurements of global solar radiation (GSR), photosynthetically active radiation (PAR), air temperature and relative humidity were made inside and outside two single-polyethylene-covered model structures. Each model structure was 1 m wide, 1 m long, and 0.75 m high. The east side of each model structure was open for natural ventilation. One of the model structures was exposed to the environment during the 13-month period, while the other was kept indoor in a room to protect the polyethylene film from environment and was used as a control when measurements were carried out. Results showed that exposure to the environment reduced the polyethylene film transmittance to GSR and PAR. The reduction in solar radiation transmitted minimized air temperatures inside the structure. The average summer daytime temperature inside the exposed structure was 45.7 °C, as compared to 46.9 °C inside the control structure, while the average of outside temperature was 38.2 °C. The degradation of the polyethylene transmittance progresses rapidly during the first three months of exposure. The relative losses of GSR and PAR transmittance were 9% and 15.3%, respectively, after three months. However, the losses decreased to 5% and 8%, respectively, after 11 months due to rainfall in the area. Radiation transmittance was found to be dependent on season of the year. The averages (standard deviations) of GSR and PAR transmittance for the control film during winter months were 0.8 (0.01) and 0.75 (0.00), respectively. Whereas, during summer months, the averages (standard deviations) were 0.75 (0.02) and 0.71 (0.02), respectively. The averages (standard deviations) of GSR and PAR transmittance for the exposed film during winter months were 0.77 (0.03) and 0.70 (0.03), respectively, as compared to 0.68 (0.01) and 0.61 (0.02), respectively, during summer months.     

无线节点GSR质量控制与现场处理技术

无线节点采集系统相对有线采集系统具有不受带道能力限制、可独立采集、自动存储、体积小、施工方便、观测系统设计灵活、降低安全风险、提高生产效率、降低作业成本等优势,从理论上讲更易于实现"两宽一高"的高效采集作业。近几年来,无线节点采集技术被各油公司的认可程度正在逐步提高,并已有多个成功运作的案例,是当前地震采集的一个重要发展方向。本文以GeoSpace公司研发的自主独立存储节点采集系统GSR为例,阐述了节点数据采集系统的工作原理、质控方法与现场处理技术。     

"CS and UCS intervals and orders in human autonomic classical differential trace conditioning": Erratum.

Reports an error in "CS and UCS intervals and orders in human autonomic classical differential trace conditioning" by John J. Furedy (Canadian Journal of Psychology Revue Canadienne de Psychologie, 1970[Dec], Vol 24[6], 417-426). The diagram appearing in this erratum should be substituted for the diagram appearing as Figure 2 on p. 423 of the article. (The following abstract of the original article appeared in record 1971-24206-001.) Measured the GSR and digital volume-pulse change in 4 groups of 80 Ss each with light and tone as CS and shock as UCS. For Groups I and II, the CS-UCS interval was .75 and 7.5 sec., respectively; for Groups III and IV, the UCS-CS interval was .75 and 7.5 sec., respectively. Group III showed 'backward' differential conditioning in the GSR; Group II yielded reliable conditioning of 'multiple responses' occurring before UCS onset; the magnitude and extent of conditioning was greater in Group I than in Groups II and III, which did not differ; some evidence for 'reverse' conditioning was suggested in Group IV, with slightly greater responding to the CS not paired with the UCS; instructions which distracted 1/2 the Ss from the CS did not affect responding to those stimuli. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relationship between GSR and anxiety indexes in projective drawings.

96 male college students drew a man, a woman, and an automobile while continuous GSRs were obtained. A significant difference was found in the degree of anxiety for the 3 drawings. The auto yielded the lowest level of anxiety, and the woman drawing the highest level of anxiety. Adaptation differences were found for 7 of the graphic anxiety indexes. For the man drawing, secondary sexual body parts yielded the most anxiety, followed by the sexual body area. The sequence was the opposite for the woman drawing. Low but significant correlations were found between 10 of the 23 possible graphic indexes and either GSR frequency or conductance. (PsycINFO Database Record (c) 2010 APA, all rights reserved)