台湾农业产业化支持政策及其运作

台湾在土地资源十分匮乏的情况下,只用了短短二三十年的时间,便在落后的传统农业基础上,实现了农业产业化与现代化,并推动农业产业化不断升级。其非常重要的原因,就是台湾当局根据不同时期农业发展的需要,制定出一系列支持农业发展的政策,并采取相应的配套措施,使政府的宏观政策得以成功实施。主要措施是:土地改革政策;市场促进政策;农业科技投入政策;产业组织优化政策;结构升级政策。     

试论农民分化与新农村建设

改革开放以来，由于生产资料所有制的变化、市场经济的发展以及城乡二元结构的松动，原来同质性很高的农民群体发生了严重的分化。新农村建设必须要充分地考虑到农民分化的现状，努力化解农民分化带来的问题，只有如此才能建设一个和谐的新农村。     

The “war on cops,” retaliatory violence,and the murder of George Floyd*

The police murder of George Floyd sparked nationwide protests in the summer of 2020 and revived claims that public outcry over such high-profile police killings perpetuated a violent “war on cops.” Using data collected by the Gun Violence Archive (GVA) on firearm assaults of U.S. police officers, we use Bayesian structural time series (BSTS) modeling to empirically assess if and how patterns of firearm assault on police officers in the United States were influenced by the police murder of George Floyd. Our analysis finds that the murder of George Floyd was associated with a 3-week spike in firearm assaults on police, after which the trend in firearms assaults dropped to levels only slightly above that which were predicted by pre-Floyd data. We discuss potential explanations for these findings and consider their relevance to the contemporary discussion of a “war on cops,” violence, and officer safety.     

群体性事件的根源分析及其化解——基于社会运行机制的分析

当前我国群体性事件频发,成为影响社会稳定和发展的突出问题。以社会运行机制为分析视角,比较传统社会和现代社会发展运行机制,我国现代社会单纯依靠经济发展作为社会控制力的唯一支撑,这种社会运行机制所导致的社会结构性压力严重和社会控制力低下是当前群体性事件多发的根本原因。因此,必须实现社会制度的公正,重建社会信仰体系,实现科学发展。     

He Did It First! A Path Model of Interactions in the Aggressive Behaviors of Elementary School Boys During Three Successive Recess Periods

Abstract

This exploratory study uses observations of the aggressive behavior of elementary school boys during three successive recess periods to test the hypothesis that aggressive behavior can spread between recess periods through peer contagion. If this hypothesis is correct, aggressive behaviors during the second recess period should mediate any correlation between aggressive behaviors during the first and third periods. Structural equation modeling supports the mediating role of the second period. This finding suggests that peer contagion in aggressive behaviors can occur quite rapidly and adds theoretical support to the use of proactive interventions within schools that curtail aggressive behaviors before they have the opportunity to spread. Implications for schools related to supervision in unstructured settings throughout the school day are discussed.     

互联网企业市场支配地位认定的理论反思与制度重构

随着互联网市场的发展,我国司法实践中适用的判断经营者市场支配地位的方案受到了严峻挑战。在互联网市场上,市场份额的计算方法受到质疑,市场份额对衡量经营者市场竞争力的判断作用已经退化。在我国对市场份额证据严格限制的实证法背景下,我国司法实践中推行的"单一市场结构方案"既不能适用于互联网市场中的垄断行为规制,也不符合我国反垄断的立法规定,是必须摈弃的一种落后观念。因应互联网市场的形成,根据我国《反垄断法》的立法宗旨和基本精神,应当在反垄断司法实践中贯彻"综合标准方案",既不简单反对可以根据市场份额推定经营者的市场支配地位,又充分考虑市场进入壁垒、市场竞争状况等其他因素对经营者市场支配地位的影响。     

建设幸福广东的社会转型挑战与治理模式重构

广东社会发展面临贫富差距拉大、社会矛盾复杂、社会诚信缺失等社会转型之痛的突出问题。其形成的根本原因在于结构变迁与治理模式相对滞后,具体包括：治理模式出现功能性失调;公共服务供给能力不足;制度创新短缺,多元治理格局尚未形成;经济社会地缘环境特殊;教育失误和社会舆论导向异化,出现信仰真空。在迈向幸福广东的征程中,需要社会治理模式创新与重构,需求新对策：进一步解放思想,着力发展＂开明政治＂和打造＂阳光政府＂;强化以民生为重点的社会事业建设,全面提高广东基本公共服务整体水平;实现治理模式的结构性转型,形成良好的社会治理格局;加强和完善公共安全体系建设,维护社会安定有序;提升文化软实力,重构社会伦理和主流价值。     

Paving the (Hard) Way for Regional Partnerships: Evidence from Portugal

A fundamental dilemma which troubles advocates of interinstitutional partnerships in regional development pertains to the extent to which partnerships enhance the effectiveness of governance processes and outcomes. This dilemma is particularly relevant in contexts that lack strong cohesive regional development alliances, such as the Portuguese case. This article aims to shed light on the debate regarding the role of partnerships in regional development, drawing on a unique collaborative interinstitutional partnership. It explores the responses to complexity across the different stakeholders, as well as its effects at the formulation and implementation stages of the strategic plans devised to apply for EU funding. Findings suggest that interinstitutional partnerships induce significantly different allocative choices at the agenda-setting. However, the established partnership was unable to cope with the several obstacles that emerged during the implementation, suggesting several vulnerabilities of partnerships, which are explored. Findings suggest the need to reinforce governance mechanisms during the implementation stage.     

Household Energy Consumption and Housing Choice in the U.S. Residential Sector

Energy use in residential buildings accounted for 21% of U.S. CO₂ emissions in 2013. Efforts to reduce energy use in the residential sector have been overly focused on improving energy efficiency of buildings. This article incorporates housing policy debate into energy policy, hoping to provide new opportunities for planners to participate in residential energy policy. Using data from the latest Residential Energy Consumption Survey, structural equation modeling has been applied to isolate the direct and indirect effects of household and housing characteristics on residential energy use. Results show that more than 80% of a household's indirect effect on energy consumption happens through the building characteristics, which is characterized as the housing choice effect on energy consumption. Planners can participate in residential energy management efforts by influencing housing needs and priorities of communities towards more sustainable compact housing units.     

固相微萃取结合气质联用测定血浆中敌草快

目的采用固相微萃取结合气相色谱-质谱联用方法快速测定血浆中的敌草快含量。方法采用硼氢化钠/氯化镍还原反应和顶空固相微萃取处理样本,气质联用检测方法,以乙基百草枯为内标,检测血浆中敌草快的含量,对还原反应和萃取的温度、时间等实验条件进行优化,并对方法学进行评价。结果采用m/z 194作为定性定量离子,在0.1~50μg/mL浓度范围内线性关系良好（Y=0.076 9X＋0.274 8,r2=0.997 5）,日内和日间精密度分别小于3.99%、5.64%。回收率为92.59%~101.27%,最低定量限为50ng/mL。敌草快还原产物1,1’-乙基-2,2’-联哌啶存在顺式和反式两种同分异构体,两者比率为1∶5.3,相对标准偏差为13.1%（n=17）。结论本文方法准确、快速、重现性好,可以在血浆等生物样品敌草快含量测定中选用。