广东生猪生产坝状与发展对策研究

广东是全国最大的猪肉消费大省,也是生猪生产大省。广东生猪生产的规模化程度和生产效率都发展迅速,但也存在在生猪数量安全、猪肉质量安全和环境压力等问题。本文通过对广东生猪生产现状、所存在的问题的分析,针对性地给出了发展广东生猪产业的相关建议。     

基于限制因素组合序列的耕地质量提升潜力研究*——以什邡市为例

[目的]通过分析什邡市耕地质量现状,充分把握影响耕地质量的主导因素并进行质量提升分区,测算不同质量提升区的提升潜力,以期为全市耕地质量的建设与发展指明方向。[方法]依据农用地分等理论,构建2014年什邡市耕地质量限制性指数评价体系,采用限制性指数模型测算耕地质量限制性指数,结合因素组合法、耕地质量潜力测算法,分别进行耕地质量提升分区及其提升潜力评价。[结果]什邡市耕地质量现状差异显著,地域分布特征明显;因素限制程度以中限制为主,多因素共同主导限制耕地比重大;各质量分区限制特征明显,各区耕地质量提升潜力在时序上和空间上也存在差异。高等别耕地集中分布于南部平原,受土壤酸碱度中等限制和剖面构型高程度限制为主;北部丘陵区以及南部河谷低洼地带主要为低等别耕地,表现为坡度与灌溉因素较高程度限制为主;综合提升潜力较大的耕地集中于北部丘陵区与南部河谷低洼地带。[结论]什邡市范围内耕地质量差异明显,存在普遍限制且分区限制特征明显,各区提升潜力空间差异明显。     

口服液中粗多糖提取方法的改进

为了考察改进苯酚-硫酸法测定保健品口服液中粗多糖提取方法的可行性,以某保健品口服液为样品,对采用苯酚-硫酸法测定粗多糖含量时的多糖的不同提取条件与测定进行一个较为详细、系统的研究。结果表明:样品经改进提取条件后测定,试验结果表明有良好的线性关系,精密度RSD值为0.69%,稳定性良好,平均加标回收率为101.0%。该方法改进后提高了该实验的精密度和准确度,重现性高,并使结果更加可靠和稳定。     

城乡一体化进程中乡村土地利用效益评价

文章在实地(河北省邢台市)调研基础上,通过文献分析与成本分析相结合的方法对城乡一体化进程当中乡村土地利用效益进行系统的评价,并在此基础上揭示出目前我国在城乡一体化进程当中乡村土地利用过程当中存在的问题,并给予相应的建议。研究结果表明:我国城乡一体化进程当中,对我国乡村土地利用效益影响较大的主要因素有政府政策不合理、对于土地利用效益缺乏足够认识,这些原因直接导致在城乡一体化进程当中乡村土地耕地边际化现象严重、城市建设用地规模过大、土地生态效益低下及乡村土地配置不合理等现象的出现。基于对土地效益评价与我国目前乡村土地利用状况的深入分析,该文认为应从土地的经济效益、社会效益及生态效益对于目前城乡一体化进程当中存在的土地利用效益偏低的现象进行整改,例如提高土地的集约度,实行大规模的机械化生产进而提高土地的经济效益;通过合理规划商业用地、居民住房用地及农业用地的比例提高土地的社会效益;发展多种形式的生态养殖与特色旅游业促进土地生态效益的提高。     

辽宁省高职专科毕业生就业率低的原因与对策

就业是民生之本,做好高校毕业生就业工作,不仅关系到人民群众的切身利益和高等教育的改革发展,而且关系到科教兴国战略的实施,关系全社会的政治稳定。本文根据高职院校招生就业工作的实践经验,客观、全面、概括地分析了辽宁省高职专科毕业生就业率低的原因并提出了相应的可行对策。     

略论二元经济的实质与转化——基于信息和知识视角

二元经济是发展中国家在发展过程中最基本的经济特征.从信息和知识的角度看,任何经济系统、组织、个人都是信息和知识生产、收集、传递及利用的装置,二元经济形成的关键在于不同区域在信息和知识的生产、收集、传递及利用能力及效率上的差异.因此,二元经济如何发展和转换完全取决于该区域内与信息和知识利用相关能力的形成和发展.     

Environmental Governance of Enterprises and their Economic Upshot through Corporate Reputation and Customer Satisfaction

Drawing on resource‐advantage and signalling theories, we investigate two mechanisms, namely corporate reputation and customer satisfaction, by which the environmental governance of enterprises can benefit their economic performance. Based on secondary data from the 500 largest US enterprises compiled from multiple sources, our findings contribute to the literature by establishing the link between corporate reputation and green reputation. We also establish the economic performance paths of environmental governance via corporate reputation and customer satisfaction. This study expounds on why ‘green’ matters and identifies the performance roles of two corporate strategic resources extractable from the environmental governance of enterprises. Copyright © 2012 John Wiley & Sons, Ltd and ERP Environment     

A two-stage technology foresight model with system dynamics simulation and its application in the Chinese ICT industry

Technology foresight is a process that identifies the critical technologies a country or industry needs to develop in order to shape a desired future. In this paper, a two-stage technology foresight approach is proposed. During the first stage, critical technologies are identified and evaluated by nationwide experts through Delphi surveys. In the second stage, a system dynamics simulation model is used to estimate how critical parameter values are likely to impact the attainment of foresight goals. A detailed illustration of this two-stage process is provided by a technology foresight case study in the Chinese information and communication technologies (ICT) industry. Because it was identified by the first-stage Delphi method as a critical technology, the diffusion of 4th generation wireless telecommunication technology (4G) was simulated, and experimentation was conducted. Suggestions are provided regarding how the Chinese information industry would need to expand the IP network infrastructure in order to support technology foresight goals under different scenarios.     

The effects of rational and habitual factors on mode choice behaviors in a motorcycle-dependent region: Evidence from Taiwan

This paper aims to explore the effects of rational and habitual factors on mode choice behaviors in a motorcycle-dependent region. Both a discrete choice model and theory of planned behavior (TPB) are employed to examine mode choice behaviors. A sample was obtained from two major cities in Taiwan to examine the contextual effect of public transport development. The empirical results reveal that psychological (rational and habitual) factors have stronger influences on mode choice behaviors than socio-economic factors, and furthermore that habitual factors explain traveler mode choice behaviors better than rational ones. The contextual effect with regard to public transport development is found to be significant for motorcyclists' mode choice behaviors. The practical implications of the results of this study are discussed.     

华庆油田产能建设“1822”提单产系统工程应用实践

针对华庆超低渗油田实际情况,在总结、借鉴、改进、实践、提高的基础上,研究编制并科学组织以实现1个提单产目标、实施8个子系统工程及严格控制相关22个应用节点为主要内容的产能建设"1822"提单产系统工程,获得了理想的提高单井产量效果。该提单产系统工程方法对其他超低渗油田提升新井产量具有实际指导意义。