CAPITALIZATION OF GOVERNMENT SUPPORT IN AGRICULTURAL LAND PRICES: WHAT DO WE KNOW?

Abstract.  The objective of this paper is to provide an overview of existing literature, both theoretically and empirically, on the extent to which agricultural subsidies do translate into higher land values and rents and finally benefit landowners instead of agricultural producers. Our review shows that agricultural support policy instruments contribute to increasing the rental price of farmland, and that the extent of this increase closely depends on the level of the supply price elasticity of farmland relative to those of other factors/inputs on the one hand, and on the range of the possibilities of factor/input substitution in agricultural production on the other hand. The empirical literature shows that land prices and rents have in general a significant positive and inelastic response to government support. Such inelastic response is thought to reflect the uncertain future of the farm programmes. And in general, studies have indicated that land prices are more responsive to government-based returns than to market-based returns.     

观赏渔业:部市型水产业的新亮点--上海发展观赏渔业的思考和建议

观赏渔业是都市型水产业发展的经济增长点，本文从观赏鱼需求和供应两方面分析了发展观赏渔业的潜力和存在的问题，在发展观赏渔业的理论和实践措施方面作了积极的探索。     

新土地分类在1∶1000大比例尺土地利用现状调查中的应用

研究目的:探讨新土地分类体系在1∶1000大比例尺下的适用性,提出修订建议。研究方法:文献分析法,实例验证法。研究结果:(1)分析了新土地分类产生的背景及意义;(2)阐述了新土地分类在使用中存在的分类层次数目少且略显粗糙以及界线不严谨等问题;(3)提出了增加分类层次,清晰表达地类涵义,统一分类标准等修订新土地分类体系的建议。研究结论:新土地分类体系是符合我国国情、适应经济发展的土地利用分类体系。     

基于线性相位近似的SOQPSK-TG信号同步算法

SOQPSK-TG （Telemetry Group version of Shaped Offset Quadrature Phase Shift Key）具有良好的频率利用率和功率利用率,广泛应用于无线通信系统当中。在连续通信模式下,SOQPSK-TG信号的同步主要采用直接判决算法。为进一步降低算法复杂度,推导了基于线性相位近似的最大似然估计误差鉴别器,理论上分析了算法估计性能,并搭建了简化的接收模型。通过仿真证明了算法在估计性能上优于脉冲幅度调制方法,算法误码率接近理论性能。     

Carbon Management Systems and Carbon Mitigation

This article proposes a carbon management system (CMS). The system comprises 10 essential elements from four broad perspectives: carbon governance, carbon operation, emission tracking and reporting, and engagement and disclosure. The proposed new approach focuses on cross‐functional integration, enforcement of proactive strategies and group rather than individual accountability. We then use Carbon Disclosure Project reports to examine empirically the implementation of systems by large Australian firms. Overall, we find that firms with higher quality CMS have achieved better carbon mitigation. Further, adequate assessment of carbon risk and opportunity, the presence of reduction targets, the strength of carbon programs and enhanced external disclosures appear to be the most effective elements in our sample firms. We present evidence that, by combining governance, internal process, carbon dioxide‐footprint tracking and communication activities, a CMS helps managers improve decision making. We discuss the implications of the findings for accounting practice and education.     

责任导向会促进年长员工知识分享吗？基于主动动机模型

全球劳动力老化的严峻形势下,年长员工能否主动分享知识经验,对充分开发年长人力资本、促进企业可持续发展具有重要意义。基于主动动机模型,本文从责任导向视角探讨了年长员工知识分享行为的促发机制和边界条件。通过线性回归和蒙特卡洛拔靴法对200份40岁以上在职员工三时点配对数据进行分析,结果表明：责任导向会通过提升年长员工的建设性责任知觉进而激发其知识分享;反年龄歧视氛围感知对这一作用过程具有权变影响。本文丰富了年长员工知识分享行为的前因研究,对企业如何积极应对职场老龄化与年长员工知识传承具有启示意义。     

Assessing Systemic Importance With a Fuzzy Logic Inference System

Three metrics are designed to assess Colombian financial institutions' size, connectedness and non-substitutability as the main drivers of systemic importance: (i) centrality as net borrower in the money market network; (ii) centrality as payments originator in the large-value payment system network; and (iii) asset value of core financial services. An aggregated systemic importance index is calculated based on expert knowledge by using a fuzzy logic inference system. We use principal component analysis to calculate a benchmark index for comparison purposes. Overall similarities between both indexes put forward that expert knowledge aggregation is consistent with that based on a purely quantitative standard approach. Specific non-negligible differences concur with the nonlinear features of an approach whose intention is to replicate human reasoning. Both indexes are complementary and provide a comprehensive relative assessment of each financial institution's systemic importance in the Colombian case, in which the choice of metrics pursues the macroprudential perspective of financial stability. Copyright © 2015 John Wiley & Sons, Ltd.     

食品中单核细胞增生李斯特氏菌改良增菌液的研究

本文通过改变丙酮酸钠以及酵母浸膏添加量,对李氏增菌肉汤(LB₁)进行了改良。通过吸光度法以及平板计数法测定不同优化条件下单核细胞增生李斯特氏菌生长曲线,并采用实时荧光PCR对增菌结果进行特异性验证。得到改良后的增菌液配方为:在商品化李氏增菌肉汤(LB₁)的基础上,添加1 g·L^-1的丙酮酸钠,15 g·L^-1的酵母浸膏,此时前增菌时间可缩短至8 h,且经过验证,特异性良好。使用改良后的李氏增菌肉汤(LB₁)大大缩短了增菌时间,特异性良好,值得推广和应用。