论科学发展观与中国和平发展

中国政府在国际社会一直高举和平、发展、合作的旗帜,强调要走和平发展的道路。科学发展观坚持了我国一贯的外交思想,坚持走和平发展道路,并揭示了中国和平发展的内在规律。     

A Rationale and Method for Examining Reasons for Linkages Among Adolescent Risk Behaviors

A large volume of research has investigated interrelations among adolescent risk behaviors. Although several theoretical accounts have been proposed, researchers have not directly examined hypotheses for why risk behaviors are linked. In the present paper, a distinction is drawn between predictive factors that explain variance in risk behaviors and “linkage factors” which may provide an explanation for why risk behaviors are interrelated. The relevance of linkage factors to risk behavior research, theory, and practice is described. Further, a simple to use and easy to interpret analytic technique for exploring linkage-related issues is illustrated. Using this technique, hypotheses regarding the role of predictors in explaining linkages among risk behaviors can be tested directly. The proposed line of inquiry will provide valuable input for intervention efforts and theoretically relevant information concerning linkages among adolescent risk behaviors. Research Associate at the Brock Research Institute for Youth Studies at Brock University, Ontario, Canada. He received his M.A. in Clinical Psychology from the University of North Dakota. His major research interests are adolescent risk behavior involvement and youth activity involvement as a context for positive development. Professor in the Department of Child and Youth Studies at Brock University, Ontario, Canada. She received her Ph.D. in Developmental Psychology from the University of Waterloo. Her major research interests include adolescent risk taking and resilience, including academic underachievement and media/technology influences on lifestyle choices and learning. Assistant Professor in the Department of Child and Youth Studies at Brock University, Ontario, Canada. She received her Ph.D. in Developmental Psychology from Brock University. Her major research interests are adolescent risk-behavior involvement, particularly related to gambling, and risk and resilience.     

从澳大利亚“警察管理发展培训项目”引发的对高级警官培训方式的思考

澳大利亚"警察管理发展培训项目"是培训、选拔高级警官的一项专门培训。分析该项目的实施过程,我们可以在教学设计、组织形式、教官选择和学员管理等方面吸收借鉴其成功的做法,不断加以改进,完善我们现有的培训方式,提高培训的效率和质量。     

试论清末民初的经济制度改革

清末民初虽然时间跨度不到 2 0年 ,但却是一个社会经济变迁较大时代。甲午战败 ,民族危机严重 ,以“振兴工商”为中心的“新政”成了濒临倾覆的清王朝挽救危机的主要手段。辛亥革命后 ,袁世凯政府也以“振兴实业”作为稳固其政权的重要方针。为此 ,相继颁行了一系列的经济政策。笔者运用新制度经济学理论探讨这一时期中国实行的由上而下的一系列经济制度改革 ,对中国资本主义的发展产生的作用和影响 ,由此揭示推进和制约近代中国资本主义发展的原因所在。     

血管内皮细胞生长因子的研究及应用

血管内皮细胞生长因子(VEGF)是一种特异作用于血管内皮细胞的多功能细胞因子,它促使血管内皮细胞分裂增殖、增生、转移,增加血管通透性并促进新血管生成,参与体内的多种生理、病理过程,在临床医学上已获得较多应用,在法医病理学方面将有广泛的应用前景。     

发展生态经济是实现西部地区经济社会协调发展的必由之路

西部大开发面临着严重的生态危机。发展生态经济是西部地区经济社会协调发展的现实选择。     

病毒性心肌炎心肌碱性成纤维生长因子的实验研究

用 8只小鼠接种柯萨奇 B3病毒（ Coxsackie B3 viral CVB3）,形成病毒性心肌炎动物模型。用免疫组织化学方法对心肌碱性成纤维生长因子（ basic Fibroblast Growth Factor:bFGF）的变化进行了研究。目的是观察 CVB3对心肌的损害。结果发现小鼠感染病毒第 3天病变心肌中即有 bFGF阳性表达,并且随病程的延长其阳性程度随之增加。常规 HE染色通常在感染病毒 5天后才出现明显的镜下改变。本研究提示 bFGF可以为病毒性心肌炎早期轻微病变的判定提供帮助。     

Assessing Stability and Change in Criminal Offending: A Comparison of Random Effects, Semiparametric, and Fixed Effects Modeling Strategies

An important theoretical problem for criminologists is an explanation forthe robust positive correlation between prior and future criminaloffending. Nagin and Paternoster (1991) have suggested that the correlationcould be due to time-stable population differences in the underlyingproneness to commit crimes (population heterogeneity) and/or thecriminogenic effect that crime has on social bonds, conventionalattachments, and the like (state dependence). Because of data andmeasurement limitations, the disentangling of population heterogeneityand state dependence requires that researchers control for unmeasuredpersistent heterogeneity. Frequently, random effects probit models havebeen employed, which, while user-friendly, make a strong parametricassumption that the unobserved heterogeneity in the population follows anormal distribution. Although semiparametric alternatives to the randomeffects probit model have recently appeared in the literature to avoid thisproblem, in this paper we return to reconsider the fully parametric model. Viasimulation evidence, we first show that the random effects probit modelproduces biased estimates as the departure of heterogeneity from normalitybecomes more substantial. Using the 1958 Philadelphia cohort data, we thencompare the results from a random effects probit model with a semiparametricprobit model and a fixed effects logit model that makes no assumptions aboutthe distribution of unobserved heterogeneity. We found that with this dataset all three models converged on the same substantive result—evenafter controlling for unobserved persistent heterogeneity, with models thattreat the unobserved heterogeneity very differently, prior conduct had apronounced effect on subsequent offending. These results are inconsistentwith a model that attributes all of the positive correlation between priorand future offending to differences in criminal propensity. Sinceresearchers will often be completely blind with respect to the tenabilityof the normality assumption, we conclude that different estimationstrategies should be brought to bear on the data.     

准噶尔盆地南缘区域羊鼻蝇的发生世代调查

以新疆准噶尔盆地南缘区域为调查点,应用昆虫系统调查法进行羊鼻蝇生活史调查,并对其各虫态期进行了测算和分析。结果发现：羊鼻蝇幼虫的百分比曲线呈不等称双峰型,发育速率时快时慢,冬季有滞育现象;该地区羊鼻蝇的发生世代为１ ａ ２ 代,２ 代所用时间不等,且世代重叠