农业供给侧改革与精准扶贫衔接机制研究

农业供给侧改革与精准扶贫具有逻辑关联性,适合构建二者的衔接机制。农业供给侧改革具有制度供给与改革对象明确化的需求,而精准扶贫在制度典范、数据共享、产能化解以及内向监控方面可与农业供给侧改革形成具体的衔接领域。同时,农业供给侧改革也为精准扶贫的纵深发展提供了机遇空间。农业供给侧改革中配置型资源和权威型资源的下移使精准扶贫的内在动力发生明显变化,而因农业供给侧改革市场化原则的引入,扶贫治理规则也发生变动。农业供给侧改革和精准扶贫衔接机制的建立,表明政府应在双方协同关系的基础上实施“整体性治理”,以此克服碎片化的制度和政策对农业供给侧改革与扶贫治理时机的延误。     

供给侧改革视角下管理会计的创新

供给侧改革的实质是通过产业结构调整来解决中国经济现阶段存在的供需错配的问题。管理会计的供给侧改革,则是企业在适应新常态下价值管理的创新战略。管理会计的创新即以信息决策和内部控制为工具和基础,以价值增量为目的,在微观层面上为国家的供给侧改革提供实践依据,促使企业在管理层面上能够和国家改革目标一致,为经济发展做出贡献。     

Business model diversification: Demand relatedness,entry sequencing,and curvilinearity in the diversification-performance relationship

This study integrates research on business model diversification (BMD) and demand-side theory to examine the relationship of BMD to performance and the sequencing of business model additions. We begin by explaining and demonstrating that the overall degree of BMD has an inverted U-shaped relationship with firm performance. We next highlight the particular role that demand relatedness plays in BMD. We first provide evidence that the inverted U-shaped relationship flattens in times of financial shocks, consistent with arguments that the benefits of BMD from consumers’ willingness-to-pay for simultaneous use of multiple business models may diminish during shocks. Second, we argue that firms tend to sequence the addition of new business models based on demand relatedness, and we provide evidence that the degree of demand relatedness between a core and a target business model enhances the likelihood of diversification into that target business model.     

海峡西岸港口发展对经济支撑力研究

分析了海峡西岸港口对区域经济发展的影响因素,通过对海峡西岸港口现状,以及海峡西岸港口与产业、腹地互动发展的分析,提出了海峡西岸港口建设支撑经济持续发展的对策建议:(1)加快海峡西岸港口产业发展;(2)拓展海峡西岸港口与腹地经济的融合。     

防范边信道攻击的等功耗编码实现算法

介绍了边信道攻击的概念和研究背景,以及幂剩余算法和公钥密码体制抗边信道攻击的主要思路;指出目前公钥密码边信道攻击防范方法的主要问题是以牺牲算法效率为代价。针对目前存在的问题,以消除运算单元之间的功耗差异为目的,提出幂剩余运算的等功耗编码实现算法;通过对新方法的论证,证明等功耗编码实现算法已达到了抗计时和能量攻击的预期目标;通过进一步分析,得到提高算法抗攻击能力不必以牺牲算法效率为代价的结论。     

图像处理技术在乘用车侧面碰撞试验中的应用

多媒体计算机序列图像运动分析系统与摄影测量学理论相结合,成为较完善的非接触动态测量系统.在乘用车侧面碰撞试验中采用图像采集和数字图像处理技术,结合直接线性变换(direct liner transformation,DLT)算法,分析碰撞试验中标示点的变形量,提高乘用车侧面碰撞强度,为汽车被动安全性研究提供依据.     

Discrete time-varying demand lot-sizing models with learning and forgetting effects

This paper deals with the problem of incorporating both learning and forgetting effects into discrete timevarying demand lot-sizing models to determine lot sizes. Forgetting is retrogression in learning which causes a loss of labour productivity due to breaks between intermittent production runs. Formulae are derived for calculating the production cost required to produce the first unit of each successive lot over a finite planning horizon. An optimal lotsizing model and three heuristic models are developed by extending the existing models without learning and forgetting considerations. Numerical examples and computational experience indicate that larger lot sizes are needed when the phenomenon of learning and forgetting exists. Several important conclusions are drawn from a comparison of the three heuristic solutions with the optimal solution, and suggestions for future research and for lot-size users to choose an appropriate lot-sizing technique are made.     

Aliternative methods for estimating long-run responses with applications to australian import demand

This paper compares and contrasts a number of single-equation and systems estimators of long-run responses with application to a three-variable import demand model. Two variants of Box and Tiao's (1977) canonical estimator are developed and associated tests for the number of cointegrating vectors are introduced. A simulation study indicates that, while both Box-Tiao estimators have empirical distributions with fatter tails than the normal, there is evidence that the incidence of extreme values is even greater with Johansen's (1988) ML procedure.     

Neglected Method of Separating Demand and Supply in Time Series Regression

This article argues that in many markets, quantity is demand determined in the short run but price is supply determined, and that the dynamic restrictions between price and quantity implied by the model have been widely neglected in empirical research. Two examples illustrate our point—the demand and supply relationships between inflation and unemployment and between the terms of trade and the trade balance. In both, specifying quantity as a function of lagged prices in demand and price as a function of lagged quantities in supply (rather than concentrating on exogenous shift determinants) is sufficient to separate demand and supply.     

试析框架边梁与次梁约束力矩

按照边框架梁与次梁的空间受力状态，阐述钢筋混凝土框架边梁与楼面次梁整体现浇时相互之间的约束影响，并提出了框架边粱与次粱约束力矩的实用计算方法。