Construction and Application of Vegetables Intelligent Expert System based on the Internet of Things Technology

Taking the intelligent expert system of an agricultural company in internet of things in Beijing as an example,this paper discusses construction of a new generation of expert systems and its application.The paper describes the system structure of intelligent expert system and its 9 function modules.This system includes mainly three function modules as follows: the module of real-time environment display with function of showing the live video pictures and greenhouse environment parameters,the module of pest warning with function of warning pest outbreak probabilities,the module of vegetables mature degree with function of showing vegetables' mature degree number.The two main functions in the course of practical application are automatic alarm of system and management assistances.The article later makes a brief summary of the problems encountered by the expert system in the process of application and popularization.The paper last listed the cost reduction measures and the improvements to increase extension effect.     

混业经营:我国金融业的发展趋势

随着入世的临近 ,关于我国金融业是采用分业经营还是混业经营模式问题 ,再次成为理论界和实务界讨论的焦点。本文探讨了两种模式的利弊 ,以及我国分业经营模式形成的原因 ,提出在新的形势下 ,混业经营是我国金融业发展的必然趋势。     

番禺工业转型分析

一、番禺工业转型的必要性及其方向。1．番禺工业转型的必要性。首先，是工业用地、劳工、环保成本上升。番禺工业用地成本上升太快，在珠三角竞争力减弱。而且用地报批程序复杂、税费较高，土地置换、调配工作任务重、难度大，因此，工业用地供不应求的现象较为突出。此外，随着劳工成本上升以及省市区对环保标准的提高和执法力度的加强，传统产业面临较大的成本压力，转型或外迁势在必行。     

男护士心理健康研究初探

传统上护理工作大多由女性承担,男性选择护理工作将会承受着巨大的心理压力,文章通过分析造成男护士心理压力的来源,并提出相应对策,使男护士生理、心理均衡发展,以充分发挥男护士的优势,为其职业规划提供依据。     

旁地产价格增长是否阻碍城镇化进程——基于我国31个省级单位面板数据的经验分析

通过对我国31个省级单位面板数据进行实证研究，发现从全国整体来看，房地产价格上涨对城镇化进程体现出正向促进作用，但是根据地区层级上的分析，在中西部地区房地产价格增长对城镇化具有显著的负向抑制作用。可见，现阶段房地产价格显然在阻碍城乡间劳动力要素流动方面扮演了重要角色。不断增长的房价增加了城镇化成本，对于农村劳动力转移起到阻碍作用。因此，为了保障新型城镇化的实现，必须通过土地、财政、金融等制度变革与其他市场化手段相结合，遏制房地产价格继续过快上涨，从而实现房地产市场与新型城镇化的协调发展。     

交通基础设施影响下的物流业与区域经济的关联研究

鉴于通过物流业发展来解释我国区域经济发展这一主题存在的一些不足,文章在综述相关研究的基础上提出了二者之间存在非线性关系的观点。利用门槛回归模型,分别以铁路和高速公路路网密度作为交通基础设施门槛变量,证实了其在物流业提升区域经济发展水平这一运行机制上存在着非线性的调节作用。研究结果表明:2004-2013年间,铁路基础设施作为门槛,二者作用机制表现出了"由强转弱"的相关关系;高速公路基础设施作为门槛,二者作用机制表现出了显著的"倒U"型相关关系;在发展低水平阶段,铁路作为物流业的主要运输方式,对区域经济影响作用强大,随后作用逐渐减弱;公路在中等水平阶段明显高于低水平阶段;在其高水平发展阶段,促进作用略低于中等水平阶段。由于交通基础设施门槛效应的存在,文章建议应系统、动态地看待我国交通基础设施作用和因地制宜地制定物流业发展政策,推动区域经济的有效发展。     

稻壳循环流化床热风炉的炉膛结构设计

作者在循环流化床锅炉传热理论和设计研究的基础上，提出一种稻壳流化燃烧的热风炉的计算方法，以60万大卡热风炉为例，主要介绍了流化床锅炉炉膛的几何尺寸确定、布风板及风帽的选型设计等，为其他系列稻壳循环流化床热风炉设计提供依据。     

Is the future static or dynamic? The role of culture on escalation of commitment in new product development

Escalation of commitment in new product development has been studied extensively for the last four decades but the impact of culture on the escalation phenomenon remains largely unexplored. This study investigates how culture impacts the decision to escalate or deescalate commitment to new products. Americans are analytic thinkers whereas Chinese tend to be holistic thinkers. When it comes to decision making, analytic thinkers focus on field independent and abstract factors and believe that future is linear and static, whereas holistic thinkers focus more on contextual factors and believe that future is dynamic and nonlinear. Hence, Chinese are more likely to escalate their commitment relative to Americans on receiving a negative performance report in the new product development process. A lab experiment using weekend MBA students and managers was used to test this underlying hypothesis. The findings confirmed that analytical thinkers use fewer factors than holistic thinkers in making new product decisions, and that Chinese managers are more likely to escalate their commitment relative to American managers. The decision to escalate or de-escalate was moderated by perceived product innovativeness.     

Expiration‐day effects on individual stocks and the overall market: Evidence from Taiwan

On expiration days of the MSCI‐TW index futures, the Taiwan spot market is associated with abnormally large volume and high index volatility, along with mild index reversal. The effects concentrate only in the last five minutes of expiration days and appear to be strengthened by the adoption a call auction closing procedure by the Taiwan Stock Exchange. Individual index stocks show high volatility and strong tendency of price reversal, with large‐ and small‐cap stocks being affected more than the medium‐sized stocks. The highest‐weighted stocks exhibit excessive volume and volatility, which is disproportionate to the impact on all other index stocks, indicating that the expiration‐day effects may have been amplified by the attempt of price manipulation using large‐cap stocks. © 2009 Wiley Periodicals, Inc. Jrl Fut Mark 29:920–945, 2009     

OFDM系统采样钟补偿算法及其FPGA实现

利用数字内插滤波器完成全数字域采样钟同步已广泛应用于OFDM数字接收机中.文中利用两个Farrow结构的内插滤波器,同时提高工作时钟对过采样信号进行数字域内插,完成接收端和发送端之间的采样时钟的完全匹配,并且根据硬件器件的特性和算法结构,逐级进行模块变量定点处理.基于实测数据的分析表明,该FPGA数字域采样钟补偿算法不仅有稳定的性能,而且其模块化设计也有利于更高阶算法或多通道系统的实现.