领导人才素质测评探讨

把握领导人才素质的特点并对其进行分析和评测 ,是干部管理工作的一项重要内容。领导人才素质的测评不能简单地用维度的方法进行堆砌 ,而要将领导者置于特定的领导环境下 ,注重领导者完成任务的程度和质量 ,实现以任务为中心的测评     

等速肌力检测在辨别伪肢体瘫中的应用

目的：探讨等速肌力检测在法医学鉴定中辨别伪肢体瘫的应用价值,为建立规范、统一的法医学肌力评价方法提供科学依据。方法选取骨折或神经损伤者57例（损伤组）和伪装者128例（伪装组）,应用等速肌力测试系统对损伤组两侧膝关节与伪装组膝关节进行检测,对双侧膝关节屈、伸肌的峰力矩（peak torque,PT）、峰力矩角度（peak torque angle,PTA）进行比较,归纳两组膝关节的力矩-时间图特征。结果损伤组膝关节屈、伸肌的双侧PT的比较差异有统计学意义（P＜0.05）,PTA的比较差异无统计学意义（P＞0.05）;伪装组膝关节屈、伸肌的双侧PT、PTA的比较差异均有统计学意义（P＜0.05）。损伤组两侧膝关节力矩-时间图主要为单峰前置型,伪装组膝关节力矩-时间图主要为多峰型。结论在法医学鉴定中,等速肌力检测在辨别伪肢体瘫方面可以通过力矩-时间图的相关特点进行评价。     

Structural Equation Modeling of School Violence Data

SUMMARY

Methodological challenges associated with structural equation modeling (SEM) and structured means modeling (SMM) in research on school violence and related topics in the social and behavioral sciences are examined. Problems associated with multiyear implementations of large-scale surveys are discussed. Complex sample designs, part of any large-scale survey, introduce multiple methodological challenges into SEM analysis. Problems with missing data and data imputation procedures are explored, along with commonly occurring departures from normality. Hypothesis testing of models and associated fit indices are explicated. Issues surrounding the use of Lagrange Multiplier tests of constraint validity in SMM are examined. Finally, basic problems associated with developing viable models of complex social phenomena with SEM are considered.     

The Masculine Yardstick of Physical Competence: U.S. Police Academy Fitness Tests

State and local law enforcement training academies differ in a myriad of ways, including the content of their classes, the type of instruction received, and the tests mandated for graduation. The focus of this study is the physical fitness test and how it affects the proportion of women to men matriculating from these academies. A predictive model of academy completion rates is derived from a sample of 96 police training academies. The presence of gendered physical testing requirements was found to be positively related to the proportion of women to men graduating from training. In addition to the empirical models, data on the specific content of these tests are provided. The variability of tests suggests that gendered physical requirements are an illusionary panacea, as they do not address the fundamental assumptions of the tests themselves.     

A microfluidic device for presumptive testing of controlled substances

A simple microfluidic device (MFD) has been developed to perform multiple color and crystal tests for controlled substance analysis. The MFD method uses less sample and reagents and generates less waste than traditional spot plate methods while performing several tests simultaneously. This methodology provides significantly more analytical information for a single sample analysis. The current generation device is the size of a microscope slide with four analytical channels: one for microcrystal tests and three for color tests. The optimized devices were subjected to a rigorous validation study using comparative replicate analyses and several operators. Target analytes were methamphetamine, amphetamine, cocaine, and oxycodone and color test reagents used were the Marquis, Simon, and cobalt thiocyanate. For the crystal tests, platinic chloride was used. The validation study showed the MFD's limits of detection to be in the picogram range. Positive tests results were observed in complex mixtures in which the controlled substance was present at concentrations of 5-10% (w/w). The microcrystal reagents showed greater sensitivity than color test reagents when used in the device. Reagent use and waste generation using the devices was 95% less that that used and generated using the traditional methods. The device performance was also shown to be operator independent.     

Fourier-transformed infrared breath testing after ingestion of technical alcohol

The study aim was to evaluate the feasibility of a Fourier-transformed infrared (FT-IR) analyzer for out-of-laboratory use by screening the exhalations of inebriated individuals, and to determine analysis quality using common breath components and solvents. Each of the 35 inebriated participants gave an acceptable sample. Because of the metabolism of 2-propanol, the subjects exhaled high concentrations of acetone in addition to ethanol. Other volatile ingredients of technical ethanol products (methyl ethyl ketone, methyl isobutyl ketone, and 2-propanol) were also detected. The lower limits of quantification for the analyzed components ranged from 1.7 to 12 microg/L in simulated breath samples. The bias was +/-2% for ethanol and -11% for methanol. Within-day and between-day coefficients of variation were <1% for ethanol and <4% for methanol. The bias of ethanol and methanol analyses due to coexisting solvents ranged from -0.8 to +2.2% and from -5.6 to +2.9%, respectively. The FT-IR method proved suitable for use outside the laboratory and fulfilled the quality criteria for analysis of solvents in breath.     

非高血压主动脉夹层破裂猝死8例法医病理学分析

目的探讨非高血压主动脉夹层猝死的死因、临床症状及法医病理形态学特点,以期为非高血压主动脉夹层猝死的法医病理学诊断及规范尸体检验提供参考。方法对2007-2015年本司法鉴定中心受理鉴定的8例非高血压主动脉夹层猝死的案例进行统计、归纳和分析。结果非高血压主动脉夹层破裂多见于40岁以下男性,病理分型主要为De Bakey I型,临床表现多不典型,无1例临床确诊。经基因检测1例确诊为Marfan综合征,1例存在Smad3基因变异。非高血压主动脉夹层均无高血压病史,排除外伤,均未见高血压病相关病理学改变,镜下大动脉检见弹力纤维减少、平滑肌减少、囊性中膜变性、炎细胞浸润等改变,某些案例还见于中动脉。结论非高血压主动脉夹层发病机制复杂,与遗传学和炎症等多因素密切相关,常常波及全身多血管病变的特点。尸检时除了系统检验大血管的同时,还有必要对全身的中动脉进行检验,建议积极进行基因检测,探究发病机制。     

A Rapid,Confirmatory Test for Body Fluid Identification,

We have developed a technique that allows investigators to confirm the presence of blood, semen, and/or saliva in a crime scene sample. It is a confirmatory test where multiple samples can be processed in less than an hour, and it is potentially portable, permitting samples to be processed at the crime scene. Samples at a scene giving a positive result can be further processed while those failing to do so may be ignored. There is a large and growing backlog of DNA evidence in the USA, slowing down the criminal justice system. This backlog has continued to grow despite an increase in the ability to process evidence faster. This technique uses quantum dot molecular beacons to test for tissue‐specific RNA species, identifying particular body fluids. We have demonstrated the tissue specificity of molecular beacons for blood, semen, and saliva.     

汽车简易工况法排放限值的制定原则和方法

国家环保总局于2005年5月30日颁布了“点燃式发动机汽车排放污染物排放限值及测量方法”(GB18285—2005),自2005年7月1日起实施。本文详述了汽车简易工况法排放限值的制定原则和方法。     

THE DYNAMICS OF CRIME REGIMES*

Crimes have many features, and the mix of those features can change over time and space. In this article, we introduce the concept of a crime regime to provide some theoretical leverage on collections of crime features and how the collections of features can change. Key tools include the use of principal components analysis to determine the dimensions of crime regimes, visualization methods to help reveal the role of time, summary statistics to quantify crime regime patterns, and permutation procedures to examine the role of chance. Our approach is used to analyze temporal and spatial crime patterns for the city of Los Angeles during an 8‐year period. We focus on the number of violent crimes over time and their potential lethality.