启动国内需求的难点与对策选择

我国围绕扩大内需出台了一系列宏观经济政策 ,但国内需求不足并未得到明显改观 ,其难点主要在于 :银行坏账巨大 ;市场准入政策制约 ;民营企业税费负担较重 ;预期收支不确定 ;消费体制改革滞后。需采取的对策是 :加大财政支持力度 ;实行公平的市场准入政策 ;拓宽民间投资领域 ;建立和完善社会保障体系等。     

浅谈公安交通管理专业综合实战技能训练

公安交通管理专业综合实战训练将过去交通管理各门专业课程训练独立运作、条块分割的形式取消,将公安交通管理专业技能进行有效规范、整合,对学生进行集中的综合性、系统性、连贯性训练。通过综合实战技能训练使实战性、可操作性、综合性、全面性的原则真正在教学环节中得以体现,从而更好地实现和达到使学生进一步增强在道路交通管理工作中的动手操作能力、解决实际问题的实践能力和对各类问题的综合判断能力。     

新经济增长周期形势下中部崛起特点分析

中部地区在改革开放后的很长一段时间里经济建设滞后于东部沿海地区,在中央实行西部大开发和振兴东北老工业等政策后,中部地区的发展问题被提上日程。在新一轮经济增长周期到来的时刻,中部地区必须抓住这一难得的历史机遇,加快经济发展力度,努力实现中部地区的崛起。     

猪用生长激素脂质体对大白鼠的促生长活性试验

对大白鼠分别腹腔注射猪用生长激素 (PST)和PST脂质体 ,第 7、14、2 8d称重 ,试验组与对照组之间差异显著 (P <0 .0 5 ) ,表明PST和PST脂质体对大白鼠具有促生长活性 ;同时显示 ,PST脂质体具有显著的缓释作用 ,缓释期可达 7d以上。     

Desire for Smart Growth: A Survey of Residential Preferences in the Salt Lake Region of Utah

As an alternative to sprawling development, smart growth combines proximity to work, proximity to shopping and other destinations, neighborhood housing mix, shared and paid parking, complete street designs, and proximity to public transit. This article uses a stated-choice experiment to determine residents' attitudes toward these various aspects of smart growth in the Salt Lake region of Utah. Utah is a conservative state, where attitudes toward auto-oriented suburbia may be more positive than in other parts of the United States. So, one might wonder whether changing national attitudes toward smart growth, documented in several surveys, apply to residents of the Salt Lake region. In this stated-choice experiment, respondents were asked to choose between pairs of housing scenarios with different attributes and different prices. Mixed logit (random parameters logit) was used to relate individuals' choices to attributes, prices, and sociodemographic characteristics of respondents. The results show that, generally, respondents have positive attitudes toward most aspects of smart growth but still express preferences for single-family neighborhoods with free parking in their own driveways or garages. Different life cycle cohorts have different preferences. Proximity to work is more important for childless young adults. Young families with children place higher value on living in a neighborhood with only single-family homes and transit access. Retired empty nesters favor a mix of housing types over single-family housing on one-acre-plus lots. The results suggest that while residents of the Salt Lake region like suburban neighborhoods with primarily single-family houses, they would also like to have improved accessibility to amenities in the suburbs.     

Mandatory Versus Incentive-Based State Zoning Reform Policiesfor Affordable Housing in the United States:A Comparative Assessment

To break the chain of exclusionary zoning and produce affordable housing, mandatory state zoning reform policies have been in place for a couple decades in the United States. Their success is often constrained by local resistance and noncompliance. Some scholars argue that the lack of incentives to communities for affordable housing production is one of the main reasons for their resistance to state mandates. At present, no incentive-based state zoning reform policy is at work except in Massachusetts. Inclusionary zoning policies do offer incentives to developers but not to communities. This article examines the strengths and weaknesses of mandatory state policies and Massachusetts's incentive-based policy and offers policy insights for the future.     

TESTING FOR TEMPORALLY DIFFERENTIATED RELATIONSHIPS AMONG POTENTIALLY CRIMINOGENIC PLACES AND CENSUS BLOCK STREET ROBBERY COUNTS

This study examined street robbery patterns in Philadelphia, Pennsylvania, from the years 2009 to 2011 to determine whether the effects of potentially criminogenic places are different across different periods of the day. Census block (N = 13,164) street robbery counts across four periods (6:45 a.m . to 9:59 a.m., 10:00 a.m . to 4:29 p.m ., 4:30 p.m . to 9:14 p.m ., and 9:15 p.m. to 6:44 a.m. ) were modeled with 12 different potentially criminogenic places, 3 measures of illicit markets, 4 compositional control variables, and spatially lagged versions of the 12 potentially criminogenic places and population using simultaneously estimated negative binomial regression models. Differences in the magnitudes of the parameter estimates across the time periods were assessed with Wald tests. Overall, the patterns across the four models were mostly consistent with the effects hypothesized based on the study's crime pattern theory and time‐geography theoretical frame; yet differences in the magnitudes of the coefficients were less pronounced than hypothesized. Overall, the results provide moderate support for the crime pattern theory and time‐geography explanation of spatial‐temporal robbery patterns; however, numerous points are raised for future crime and place research.     

An Empirical Study on the Relation Between the Critical Angle for Bullet Ricochet and the Properties of Wood

The properties of a bullet, an object, and the incidence angle determine whether the bullet will penetrate, perforate, or ricochet. In this study, the critical angle for ricochet was established for .32 Auto and 9 mm Luger bullets on Abachi, Southern Yellow Pine, Beech, and Ipe wooden boards. Results show that the critical angle differs depending on caliber and wood type. The critical angle is higher for .32 Auto bullets than for 9 mm Luger bullets and increases with increasing wood density and Janka hardness. The established critical angles for ricochet on the lightest and softest wood (Abachi) are 10.4° and 10.3° for .32 Auto and 9 mm Luger, respectively. For the heaviest and hardest wood (Ipe), the angles were 45.0° and 33.4°, respectively. The combined results on the four tested woods show a strong linear relationship between both the density and the hardness and the critical angle for both calibers.     

服务型政府建设的实践困境及其改进策略——基于政府范式转换的视角

当前我国正兴起建设服务型政府的热潮,各级地方政府都在积极进行服务型政府建设的探索和创新。但是由于理论上的不成熟以及诸多现实因素的制约,各地政府在建设实践中也存在一些困境。从政府范式转换的视角,核心是要使观念范式得以根本转型,同时要在观念范式主导下实现三大层次范式有机的整体变革,即实现观念范式的价值理念创新,规则范式的政府制度转型以及操作范式的行政方式变革。     

论物权变动的理性基础及其实现

物之支配的本质 ,是人的外在化意志对物的支配。但以法律事实为实证 ,以物之行为支配为公示的物权 ,其外在化意志对物的支配却发生断裂。为此 ,限制物上意志对峙中既存意志的排斥力 ,成为物权变动理性判断的必然选择。意思主义和折衷主义均以蕴涵双重理性意义的合意为基础 ,而形式主义则以独立的物权合意作为物权变动的理性基础。