小麦面筋含量测定影响因素分析

面筋含量是影响小麦和小麦粉品质的重要因素,面筋吸水率是小麦储存品质的重要指标。本文对小麦面筋含量测定中的关键步骤和重点环节进行了分析,探讨不同因素对试验结果造成的影响及应注意的事项,以期为各基层试验人员提供借鉴,为未来标准的修订提供参考。     

基于贫困人口发展的旅游扶贫效应评估--以安徽省铜锣寨风景区为例

本文以安徽省铜锣寨风景区旅游扶贫开发为例，基于旅游扶贫开发对贫困人口的经济影响和非经济影响，从实际效应——贫困人口在旅游扶贫开发中实际受益和发展情况，感知效应——贫困人口对景区旅游业发展及由此产生的生活变化的感知和态度，效应的可持续性3个方面对旅游扶贫效应中贫困人口的受益和发展情况进行评估。     

一种基于差分相干积累的扩频信号开环同步捕获方法

将全数字接收机的结构引入到扩频接收机中,用一种前向的并行处理结构来代替传统码延迟锁定环的反馈结构,采用差分相干积累的方法捕获低信噪比扩频信号的伪码相位.仿真结果表明,这种方法能快速可靠地捕获低信噪比扩频信号的码同步,可以应用于开环的全数字扩频接收机中.     

融资理论的实践效应及其验证——基于中国上市公司的数据分析

融资理论是企业制订融资政策的理论基础.不同的融资理论及管理思想将会导致企业采用不同的资金管理策略与政策.因此,融资理论及其实践效应又是预测企业资金管理政策的重要参数.本文以中国上市公司为基础,重点探讨优序融资理论和权衡融资理论在中国企业管理实践中的应用情况.研究表明,这两种理论在中国企业管理实践中都得到了不同程度的应用,但是比较而言,优序融资理论的受支持程度要高于权衡理论的受支持程度.     

基于分布式数据挖掘的连锁商业企业经营决策分析

分布式经营系统是大型连锁商业企业发展的基础,采用分布式数据挖掘辅助连锁商业企业决策是一种理想选择。连锁商业企业经营决策可以通过基于分布式数据挖掘的全局控制站点决策模式和分站点决策模式,各站点的独立和全局的综合来实行;基于分布式数据挖掘的决策机制与集中式数据挖掘的决策机制相比有划分粒度小、分析与综合性强、面向顾客的灵活度高等特点;并实现了一个客户细分的决策过程。     

经济发展阶段划分理论研究述评

经济发展阶段划分理论是经济发展理论研究的重要内容。该理论包括两个基本问题:一是经济发展阶段划分的标准;二是经济发展阶段划分的内容。本文对学术界在这两方面的主要研究成果作了简要评析     

企业集群内社会资本演进的动力机制研究

本文从经济社会学的视角指出,企业集群内社会资本是一种摄取稀缺资源并由此获益的能力,它随着企业集群这一产业组织的成长发展而不断演进,据此提出了企业集群内社会资本演进的一般过程.对其演进过程,运用动态博弈模型分析了企业集群内社会资本演进的动力机制--声誉机制.     

基于TCP/IP的嵌入式WebServer网络测控系统设计

本文研究基于TCP/IP协议栈的嵌入式系统在网络智能设备中的测控应用设计。以Rabbit2000网络微处理器和Dynam ic C软件开发环境为例,阐述构建嵌入式W ebServer的具体技术及相关的实现方案;详细介绍了实现TCP、UDP报文进行网络通信、串行口数据通信和对网络智能设备的测控技术等,并给出系统硬件原理框图和有关软件实现的程序代码及流程图。     

Climate adaptation in ‘new world’ cultural landscapes: The case of Bay of Fundy agricultural dykelands (Nova Scotia,Canada)

North America has few cultural agricultural landscapes, and often commensurately poor governance arrangements for managing change in such settings. This research uses the Acadian dykelands of Nova Scotia, Canada, as an opportunity to explore the social and governance limits to coastal climate adaptation in ‘new world’ cultural agricultural landscapes, as well as inform local decision-making. Approximately half of Nova Scotia’s coastal wetlands were converted to dykeland in the 1600s, lowering local resilience to the increased frequency and storm severity anticipated with climate change. Today, dykelands protect a diversity of public and private interests, meanings and values, yet are controlled by the agricultural sector, which can no longer afford to maintain them all to 2050 climate projections. We report here on a representative online Q-methodology survey of 183 adult Nova Scotians in the spring of 2015. Respondents sorted 34 statements along a normal distribution about whether they prefer dykeland maintenance or wetland restoration, and under what governance arrangements. Four factors were derived: the dominant discourse was local, female and strongly pro-dykeland, indicating the likelihood for local resistance to dykeland removal on for cultural, recreational and farming reasons. The second factor was supportive of wetland restoration for reasons of efficiency, not wetland affinity, but characterized by those in positions of management power. The two minority viewpoints were less informed about dykelands, characteristic of outsiders, and concerned more with governance. More education is needed about the challenges facing dykelands, the benefits of coastal wetlands, and the management options, but this research shows proposals to change landscape should emphasize flood mitigation over cost-saving. Cultural values and status quo bias are clearly barriers to adaptation planning, even when discussing the removal of man-made structures. The factors were surprisingly polarized, suggesting the forced-normal distribution affects the space available to convey nuanced perspectives. Large p-set Q-method of this kind is likely most useful for characterizing the emergent discourses demographically, and understanding their prevalence; the same discourses had emerged within a much smaller pilot study.     

火力发电厂中基于光纤传感技术的火灾报警系统设计

针对国内外电厂对缆式线型感温的设计要求,突出了线型感温探测的重要性。从光纤感温探测的原理开始,对整套系统进行了结构性研究。主要研究了系统结构、探测光缆、控制器等组件。结合拉曼散射原理,剖析温度变化引起探测光缆的吸收和反吸收效应;强调了光学感温探测系统的应用优势和安装条件等。最后结合实体项目,分析对比了传统感温电缆和光学感温探测系统在实际工程应用中的优缺点,并提出了优化方案,以提高火灾报警系统的工作效率。