一种Link16信号的检测识别算法

在Link16信号侦察中,Link16信号的检测识别是实现信号分选的基础和关键。设计了一种基于双滑动窗的自适应双门限Link16信号检测识别算法,具有检测识别准确率高、实时性好、易于工程实现的特点。仿真结果表明,当信噪比在7 dB以上时,脉冲检测识别正确率均在95〖WT《Times New Roman》〗%〖WTBZ〗以上。     

Compositional data analysis and zeros in micro data

The application of compositional data analysis methods in economics has some attraction. The methodology relies upon the use of 'log-ratios' in the statistical analysis. Such an approach is not possible when the data to be analysed include observations where the observed budget share is zero. We, therefore, consider and extend the methods of compositional data analysis in the situation where the data to be analysed include observations where the observed budget share is zero. The modified compositional data methods are discussed both in statistical terms and through potential economic interpretations of the method. Further, the modified methodology is applied to the 1988-89 Australian Household Expenditure Survey yielding estimates for a system of Engel curves.     

The Political Economy of Addressing the Climate Crisis in the Earth System: Undermining Perverse Resilience

The Earth system is a complex adaptive system, characterised by non-linear change and with significant capacity for surprise. In times of systemic crisis, such as dangerous anthropogenic climate change, perverse resilience (for example the structural power of fossil fuel interests in the global economy) can threaten overall Earth system stability. Critical political economic analysis recognises climate change as a threat with significant political economic characteristics and implications. However, key dimensions of climate change as a globally coherent phenomenon, including the important implications of Earth system dynamism and non-linear change, can remain unrecognised, mischaracterised or underestimated. In contrast, resilience approaches describe social-ecological systems but neglect the significance of norms and power relations in human societies. This article builds theory by linking key concepts – hegemony and resilience – from neo-Gramscian political economic analysis and resilience approaches to social-ecological systems. Our objective is to generate a new conceptual framework to improve understanding of the role of politics in social-ecological systems. We use climate change and its mitigation to demonstrate the new framework's potential.     

复杂适应系统理论在股市模拟中的应用

资本市场是由金融产品提供者(如上市公司)、交易所和投资者组成的系统。随着经济的不断发展,股票市场已成为我国资本市场中最活跃、发展最快速的市场,因此它也成为众多专家学者研究的焦点。传统的金融学理论对于股票市场中许多普遍存在的特征性事实,如尖峰胖尾、波动聚集等现象难以解释。与此同时,传统的线性数学分析方法也陷入了前所未有困境。在环境的要求下,复杂适应系统理论在金融学中的应用所具备的优势逐渐显露出来。     

交叉极化干扰消除技术研究

针对双极化频率复用系统中的交叉极化干扰问题,提出了全数字交叉极化干扰消除 器的设计方案,研制了具有交叉极化干扰消除、解调功能的一体化工程样机。测试结果表明 ,该设备对交叉极化干扰的消除效果明显。     

1 kW微波源机箱电磁耦合的并行FDTD模拟

微波源机箱的不同面板上开有不同数量和大小的矩形孔缝和散热通风孔,电磁脉冲可以通过机箱上的孔缝耦合进入微波源内部,对内部电路和设备造成干扰。通过自动网格剖分技术实现了1 kW微波源的快速建模,采用并行时域有限差分（FDTD）算法模拟了不同极化方向下高斯脉冲正入射1 kW微波源机箱的耦合问题,分析了微波源机箱的电磁脉冲耦合规律。研究结果表明,数值计算结果与电磁软件仿真结果吻合得比较好,电磁脉冲的极化方向对耦合进入微波源箱体内的电场强度影响不大,微波源机箱中心点的谐振特性明显。     

基于自适应模糊PID控制的中央空调冷冻水系统仿真研究

定风量空调系统的调节是通过调节冷冻水流量实现的,建立了各个部件的数学模型,通过调节水泵转速来调节冷冻水流量。由于空调系统参数的时变性,常规PID控制存在局限性,本文建立自适应模糊PID控制器,并与常规PID控制器进行比较,表明自适应模糊PID控制调节效果更好,简单易行。     

DEVELOPING A FRAMEWORK FOR ASSESSING RESILIENCE OF TOURISM SUB-SYSTEMS TO CLIMATIC FACTORS

Some researchers have argued that resilience is a useful concept for understanding impacts on social-ecological systems, such as tourist destinations. This paper presents the development of a resilience framework for tourist destinations with a particular focus on climatic disturbances or stress, and their impacts on tourism activity sub-systems. Building on the model of a ‘stability landscape’, this research uses primary data from the Queenstown-Wanaka destination in New Zealand to evaluate the concept of resilience and to formulate surrogates that describe the factors that shape resilience. Challenges for future research, including the proactive building of resilience, are outlined. This research represents a good example of an interdisciplinary approach that transcends existing epistemologies in tourism.     

The Impact of Salesperson Perception of Firm Market Orientation on Behaviors and Consulting Effectiveness

The purpose of this study was to study market orientation as an antecedent of salespersons' behaviors that should, in turn, influence the ability of the salesperson to add value to the product or service. There have been many studies of personal antecedents of salespersons behaviors and performance, with little predictive success. But there are few studies of firm-level influences on salesperson behaviors and their outcomes. A survey was sent to non-retail salespeople utilizing previously validated scales for all constructs of interest. The survey responses were analyzed using structural equation modeling to test hypotheses. Results suggest that market orientation has an indirect influence on salesperson consulting through adaptive selling and active listening behaviors. Active listening fully mediates the relationship between customer orientation and salesperson consulting, while salesperson consulting fully mediates the relationship between active listening and consulting effectiveness. Half of the influence of market orientation on salesperson consulting effectiveness is direct, while the other half of its influence is indirect through those salesperson behaviors. The author provides explanations for these results and implications for managers and researchers.     

品牌联盟组织间协作的构成及路径的案例研究

基于复杂适应系统理论,采用案例研究方法,探究品牌联盟组织间协作的构成维度及路径.协作目标、协作契约、组织结构和组织间相互作用为品牌联盟组织间协作的4个关键构成维度.其中,协作目标体现了品牌联盟的需求;协作契约以及组织结构组成协作具体内容;组织间相互作用形成协作方式;协作内容及协作方式共同决定着协作模式的形成.品牌联盟组...