信息时代青年政工干部能力构成的新变化

在信息时代,社会生活对青年政工干部的能力构成要求正在悄然发生变化,其中包括理性生活的能力、控制情绪的能力、克服偏见的能力、待人以善的能力、信任同志的能力、寻找需求的能力、正视付出的能力、把握机会的能力。关注信息时代青年政工干部能力构成的微妙变化具有积极的现实意义。     

相位差变化率的快速高精度测量及精度分析

由于阵元间相位差变化率这一观测量与通道不一致性关系不大,信号到达两阵元间的相位差变化率常用于无源定位测量中。提出了一种新的快速高精度的相位差变化率测量方法,利用分时间片思想,首先通过对无模糊相位差进行一次相位平移,得到各个时间片含模糊的相位差值;然后对得到的各个时间片的含模糊相位差进行一次相位平移,得到各时间片间相对无模糊的相位差;最后对相对无模糊相位差采用最小二乘算法求得相位差变化率。理论分析和仿真实验表明,本算法可以很好地解决测量中由于相位模糊造成的相位差抖动问题,能够在短时间内得到高精度相位差变化率信息,可以满足定位要求。     

Rose-tinted lenses: how American functionalist strategy inhibits our appreciation of complex conflicts

Strategists and military professionals have previously questioned many of the methodological (theoretical underpinnings, the principles, and rules applied by the discipline) decisions associated with American military strategy, but the direction this essay takes is above and beyond the common methodological rivalries in how we pursue strategic desired future states. To get beyond methodological disputes entirely, we must consider thinking about our thinking as an organization on American strategy. Thus, this article hovers between philosophies, organizational theory, as well as our usually unquestioned belief in something called “strategy”. Questioning things about our basic understanding of the world tends to trigger strong organizational defense mechanisms, for good reason. Critical reflection at deep levels puts our worldview, and our role within it at stake. Nonetheless, as strategic disappointment emerges over multiple complex conflict developments, even the most cherished and guarded choices on how the world ought to work are ripe for critical inquiry. This essay examines the limited single strategic paradigm of the US defense industry and how the latest American National Security Strategy and Army Future Operating Concept (Win in a Complex World through 2030) presents a flawed strategic position. This essay presents valid alternative strategies that operate within different paradigmatic constructs.     

C^I体系下图像目标毁伤效果评估模型的研究

目标毁伤评估系统是C^4I的重要组成部分,图像变化检测是目标毁伤效果评估系统中的一种重要手段。分析了图像处理技术的必要性,据此设计了基于图像变化检测的目标毁伤评估系统模型,并对其关键技术及评估准则进行了深入分析。结果表明,基于图像变化检测的目标毁伤估计可以提高评估效率,提高评估精度和优化评估效果。     

悬空管道固有频率的计算

在地质灾害作用下,输油管道下方的土层下陷或流失会造成管道悬空。当悬空管道发生弯曲变形时,两端埋地管道要对悬空管道产生影响。利用埋设段和悬空管道的受力平衡条件联立求解出两段管道的弯曲变形,并且讨论了不同土壤刚度和管道轴向力条件下悬空管道振动的固有频率,并和工程上推荐使用的简支梁和两端固支梁的静动态特性进行比较。管道大幅振动或共振是管道破坏的重要原因,准确计算悬空管道的固有频率,对悬空管道的静力分析、振动分析以及输油管道的完整性评价都有非常重要的意义。     

嬗变与发展——从装饰艺术到工业设计进程中设计观念的改变

在设计的发展历程中,从手工业文明进入工业化文明,外在环境对设计观念的影响,起着决定的作用.并随着外在物质的变化和人类情感的丰富,使其观念不断的变化和发展.     

URBAN FORTRESSES

One of the consequences of the state's inability to protect the life and property of all its citizens—especially in developing countries—is the formation of private alternatives to crime prevention and control. Gated communities, or enclosed neighbourhoods, are one such popular alternative. This article compares the phenomenon of gated communities in two developing countries: South Africa and Brazil. Both countries are plagued by violent crime and share key human development indicators. The article also explores key issues that have been raised around gated communities in both countries. Gated communities can contribute to spatial fragmentation in urban areas, and reflect increased polarisation, fragmentation and diminished solidarity within society. By excluding other urban residents and people from surrounding neighbourhoods, gated communities can contribute to social exclusion, inhibiting the construction of social networks that form the basis of social and economic activities.     

The challenge and meaning of justice in northern Uganda

Even though the peace talks in northern Uganda have faltered, attempts at negotiations between the Ugandan government and the rebel Lord's Resistance Army are continuing. The current rapprochement between the two sides is the most significant move towards peace in the twenty-year civil war in northern Uganda. Even though the war has been extreme in its brutality, it is little known of outside the region—with reports on the conflict often portraying a protective government pitted against a crazed rebel group. But the issues are much more complex. The article examines the history of abuses and atrocities committed by both sides; the wider implications of the conflict for the north; why the rest of Uganda are seemingly disinterested in the conflict; and the politics behind why northern civil society have little trust in the Ugandan government or the International Criminal Court (ICC). The current prospect of peace has also stirred up the debate around justice and the forms of justice for victims of both rebel and government atrocities. And this is where the biggest cleft between the northern civil society and officialdom (government and international NGOs) resides. The article further examines the implications of the ICC's work in Uganda, and why there has been such widespread hostility towards it from northern civil society. The article also asks if—beyond the end of fighting and terror—peace will really mean that northern Uganda can finally partake in the prosperity the rest of the country has almost taken for granted.     

Cognitivism,prospect theory,and foreign policy change: a comparative analysis of the politics of counterinsurgency in Malaya and Afghanistan

This article investigates the cognitive limitations on policy change in counterinsurgency (COIN) efforts by examining why American decision-makers failed to revise their government strategy substantially while fighting the insurgency in Afghanistan in 2003–2014 and why their British counterparts were more successful in adjusting their policies in the Malayan insurgency in 1948–1954. Unlike most of the COIN literature that concentrates on military strategy and tactics, the analysis of government policy-making in Malaya holds some important political lessons for American leaders today despite differences between the insurgencies in Afghanistan and British Malaya. As a response to the criticism of COIN studies in general that they lack theoretical guidance, this article utilizes an integrated cognitivist-prospect theory framework. It is argued that some of the COIN literature mistakenly suggests that a more difficult strategic situation was primarily responsible for American failure in Afghanistan. Instead, American decision-makers faced a more difficult task cognitively than their British counterparts, as policy change in Afghanistan would have required greater ideational change. American principals were much more attached to their beliefs emotionally, had no alternative problem representation, and had to shift between frames in order to engineer a response that was more in line with events on the ground in Afghanistan. Regarding prospect theory, findings indicate that gains frames appear to be unhelpful in monitoring progress until catastrophic failure endangers the reference point, and that decision-makers often have more than one reference point to attune their policies to, which often results in suboptimal choices with regard to at least one reference point.     

火炮整体动态分析与土壤的耦合作用

本文以85加农炮为实例,根据实测结果,估计了土壤的物理参数,从而确定了火炮的边界条件;用塑性杆元及线性阻尼器模拟了驻退机、复进机的作用;在此基础上,建立了火炮整体的有限元模型。所得计算结果与实测结果符合较好。