THE EFFECTS OF PHYSIOLOGICAL FLOW WAVEFORM ON WALL SHEAR STRESS IN CAROTID BIFURCATION MODEL

Numerical models of carotid bifurcation were constructed using a combination of tuning-fork bifurcation and straight or curved common carotid. The different inlet velocity profiles of the common carotid were generated for Bloch flow waveform and Holdsworth flow waveform, respectively. The effects of the different flow waveform for the common carotid on Wall Shear Stress (WSS) and Oscillatory Shear Index (OSI) of carotid bifurcation were studied by CFD method. The results show that the physiological flow waveform of curved common carotid has a significant effect on OSI. In particular, the OSI on the outer walls of carotid sinus and external carotid becomes higher in the inward-curved common carotid for Holdsworth flow waveform. But, in both cases of low WSS and high OSI, the effects of flow waveforms are smaller than those of the curved common carotid. The study reveals that the exact knowledge of the physiological flow waveform, vascular geometry and inlet velocity profile is important for hemodynamic numerical simulation of artery bifurcation.     

TSUG, the Thomson Scientific User Group in the UK

The forerunner to the UK-based Thomson Scientific User Group (TSUG) was formed in 1990 as a professional interest group for patent information searchers using Derwent patent abstracts and related products. Although discussion and activities still revolve around this area, the group today also exchanges information on and searching experience with any other patent-related information products of interest and relevance to members. The group and its members maintain close links with Thomson Scientific for the purposes of product development and product evaluation.     

煤种燃烧稳定性试验研究

采用热重分析方法对河南地区电站应用的部分典型煤种进行了燃烧稳定性分析研究。通过分析结果与实际燃烧情况的比较，提出了煤种燃烧稳定性的判别指数G。     

W9Mo3Cr4V高速钢激光回火的研究

用正交试验优选出ＷＭｏ３Ｃｏ３Ｃｒ４Ｖ高速钢最佳激光回火工艺参数。研究表明，高速钢的激光淬火硬度和二次硬化峤同于常规淬火者，是激光回火的二次硬化值可以达到常规回火的二次硬化值。     

Development and evaluation of the Balanced Index of Psychological Mindedness (BIPM).

Psychological mindedness (PM) refers to a person's interest and ability to be in touch with and reflect on his or her psychological states and processes. In this multipart study, the authors present the Balanced Index of Psychological Mindedness (BIPM). The psychometric properties and clinical relevance of this 14-item self-report scale were examined in 2 community samples and a mental health patient sample in the Netherlands (total N = 1,211). The 7-item Interest and Insight subscales of the BIPM showed good internal consistency (Cronbach's αs = .85 and .76, respectively), test–retest reliability (r = .63 and .71, respectively), and construct validity (e.g., r > .40 with related constructs). PM was higher in women than in men. Relatively low PM was found among poorly educated people and in mental health patients (ps r = ?.21 to ?.36, p     

A comparison of the predictive validity of four sets of baseline ASI summary indices.

This study compared the long-term predictive validity of original and new baseline Addiction Severity Index summary scores in methadone patients. The indices included the original Interviewer Severity Ratings (ISRs) and the new Clinical Indices (CIs), which use both lifetime and recent problem information, and the original Composite Scores (CSs) and Evaluation Indices (EIs), based on recent problems only. Outcomes were medical hospitalization, employment, alcohol intoxication, drug hospitalization, and psychiatric hospitalization in Months 7–24 poststudy entry and criminal charges in Months 0–24. Hierarchical logistic regression analyses were used in which 1 index was entered first and the other in the 2nd step. The reverse order of entry was used in a 2nd analysis, A final analysis set compared the best predictor from each of the 2 prior analysis sets. The CIs were superior to the other indices in predicting 3 of 6 outcomes (psychiatric hospitalization, drug hospitalization, and criminal charges); the EI was the best predictor of alcohol intoxication, and the CS the best predictor of unemployment. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

评价熔窑内玻璃液澄清过程的定量指标

评价熔窑内玻璃液澄清过程的定量指标胡桅林，赵国昌，过增元（清华大学工程力学系１０００８４）张灵生，王家垠，马志斌（陕西彩色显象管总厂）ＱｕａｎｔｉｔａｔｉｖｅＥｖａｌｕａｔｉｏｎｆｏｒＲｅｆｉｎｉｎｇＰｒｏｃｅｓｓｏｆＧｌａｓｓＭｅｌｔｉｎＴａｎｋＦ...     

Spatial and temporal patterns in Arctic river ice breakup observed with MODIS and AVHRR time series

The timing of spring river-ice breakup, a major annual event for physical, biological, and human systems on Arctic rivers, has been used to infer regional climate variations over the past century or more. Most observations of ice breakup are recorded as point data taken from selected ground-based stations. It is unknown whether these point observations are fully representative of breakup patterns elsewhere along the course of a river. Here, daily time series of moderate resolution imaging spectroradiometer (MODIS) and advanced very high resolution radiometer (AVHRR) satellite images are used to remotely sense spatial and temporal patterns in ice breakup along 1600-3300 km lengths of the Lena, Ob', Yenisey, and Mackenzie Rivers. The first day of predominantly ice-free water is visually identified and mapped for ten years (1992-1993, 1995-1998, and 2000-2003), with a mean precision of ±1.75 days. The derived breakup dates show high correlation with ground-based observations, although a slight trend towards earlier satellite-derived dates can be traced to differences in the way ice breakup date is defined. Large ice jams are often observed, particularly at confluences, although smaller ice jams may not be visible due to the limited spatial resolution of the imagery used. At the watershed scale, spatial patterns in breakup seem to be primarily governed by latitude, timing of the spring flood wave, and location of confluences with major tributaries. Interestingly, channel-scale factors such as slope, width, and radius of curvature, which are known to influence ice breakup at the reach scale, do not appear to be major factors at the scale observed here. The degree of similarity between interannual trends in breakup date at distant points along a river is generally high, which supports the use of point-scale data to infer regional climate variations. This similarity does not hold true for the Mackenzie River, where substantial spatial differences in breakup trends are observed. A new variable, spatially integrated breakup date (d_i), uses weighted spatial averaging to provide a more encompassing measure of breakup timing. The Ob' and Yenisey Rivers show similar trends in spatially integrated breakup date from year to year. In contrast, the Mackenzie and Lena show a remarkably consistent negative correlation, here attributed to sea surface temperature anomalies associated with the Pacific Decadal Oscillation Index.     

浆纱质量检测技术的新进展

分析了国外浆纱检测的新指标，并在此基础上分析了国内目前浆纱检测指标的缺点，介绍了几种基于浆纱检测新指标的测试方法与仪器，对耐磨性能检测、浆纱毛羽检测、毛羽缠结倾向检测等技术进行了研究。     

Capturing the complexity of water uses and water users within a multi-agent framework

Due to the hydrological and socio-economic complexity of water use within river basins and even sub-basins, it is a considerable challenge to manage water resources in an efficient, equitable and sustainable way. This paper shows that multi-agent simulation (MAS) is a promising approach to better understand the complexity of water uses and water users within sub-basins. This approach is especially suitable to take the collective action into account when simulating the outcome of technical innovation and policy change. A case study from Chile is used as an example to demonstrate the potential of the MAS framework. Chile has played a pioneering role in water policy reform by privatizing water rights and promoting trade in such rights, devolving irrigation management authority to user groups, and privatizing the provision of irrigation infrastructure. The paper describes the different components of a MAS model developed for four micro-watersheds in the Maule river basin. Preliminary results of simulation experiments are presented, which show the impacts of technical change and of informal rental markets on household income and water use efficiency. The paper also discusses how the collective action problems in water markets and in small-scale and large-scale infrastructure provision can be captured by the MAS model. To promote the use of the MAS approach for planning purposes, a collaborative research and learning framework has been established, with a recently created multi-stakeholder platform at the regional level (Comisión Regional de Recursos Hidricos) as the major partner. Finally, the paper discusses the potentials of using MAS models for water resources management, such as increasing transparency as an aspect of good governance. The challenges, for example the need to build trust in the model, are discussed as well.