Results 11 to 20 of about 1,764 (110)
Experimental study on dynamic response and residual compressive strength of composite sandwich panel with PVC foam core under single-point low-velocity impact [PDF]
ObjectivesIn this paper, an orthogonal braided glass fiber composite sandwich panel with a PVC foam core and dimensions of 150 mm×100 mm×26 mm is selected as the research object in order to study the impact mechanical properties of composite sandwich ...
Chongyi CHEN +6 more
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Environmental racism and air pollution: Pre and post the COVID‐19 economic shutdown
Review of Policy Research, Volume 42, Issue 4, Page 949-981, July 2025.Abstract Decades of research demonstrates that minoritized groups are disproportionately affected by swathes of harmful pollutants, including air pollution, even controlling for low income. Would significantly reducing individual car traffic help reduce the EJ gap?
Heather E. Campbell +3 more
wiley +1 more source
Social protection and resilience in protracted crises
International Social Security Review, Volume 78, Issue 2-3, Page 173-190, April-September 2025.Abstract This article critically examines perspectives on social protection’s role in strengthening resilience capacities in protracted crises – contexts where conflict and displacement persist for five years or longer. These crises shape how stakeholders navigate their mandates to provide support, while influencing how affected communities seek to ...
Carolina Holland‐Szyp, Jeremy Lind
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Shocks in economic fluctuations in China ——based on a DSGE model [PDF]
, 2012 摘要 长期以来，“中国奇迹”被人津津乐道，但在近三十年的高速增长过程中，中国经济的脆弱也表露无遗。毫无疑问，现阶段中国经济是不平衡的，过度依赖投资和出口的发展模式并没有发生根本性转变。对投资和出口的过度依赖意味着来自投资和出口的冲击将造成中国经济的较大波动。 那么，中国的实际经济数据是否支持上面的论断呢？这是一个有趣的问题。本文构建了一个带“金融加速器”的动态随机一般均衡模型。在校准部分参数的基础上，利用中国数据，通过贝叶斯方法，对模型参数进行了估计 ...
刘照坤
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International Social Security Review, Volume 78, Issue 2-3, Page 145-171, April-September 2025.Abstract Public works programmes (PWPs) are pervasively used to tackle poverty and unemployment, and to build infrastructure and skills in low‐ and middle‐income countries. While their impacts on poverty, food security and labour outcomes have been widely documented, there is little research focusing on the role of PWPs in supporting household climate ...
Francesco Burchi +3 more
wiley +1 more source
Channel Capacity Analysis of Distributed MIMO Systems in Cabin [PDF]
, 2011 采用自主搭建的信道测量平台测得了机舱环境下分布式MIMO系统的信道冲击响应矩阵。根据实测的信道矩阵分别计算了4种具有不同收发天线数目的分布式MIMO系统的信道容量。为了便于比较,SISO系统的信道容量也通过实测数据进行了计算。计算结果表明:在机舱环境下,采用分布式MIMO系统和采用SISO系统相比能够显著提高系统信道容量,说明分布式MIMO系统可以充分满足未来机舱内无线通信高速率数据传输的需求。With the self-built channel measurement platform,the ...
周春晖 +5 more
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Food insecurity and coping strategies of low‐income households in Tshwane, South Africa
Poverty &Public Policy, Volume 16, Issue 4, Page 388-406, December 2024.Abstract This study used principal component analysis to provide targeted policy interventions in response to livelihood coping strategies adopted by low‐income households in Tshwane (Pretoria), South Africa. The empirical findings are categorized into four food‐coping strategy groups.
Adrino Mazenda, Tinashe Mushayanyama
wiley +1 more source
Research on Impact Load Inversion Based on Compressive Sampling and Model Analysis [PDF]
, 2017 近年来，许多学者针对大型结构的冲击载荷识别进行研究，以期提高这些结构的安全性、降低维护费用、延长使用寿命。在大型结构健康监测中，如何快速、准确地获得冲击力是一个值得深入研究的问题。本文提出了基于压缩采样信号的模态分析方法，取代基于有限元分析的模态分析方法，克服传统冲击载荷反演需要依赖结构有限元模型的问题。同时，基于压缩采样理论提出了一种冲击载荷识别方法，其中包含了稀疏模型和重构优化模型。该方法能够克服存储及传输的响应信号数据量过于庞大的问题。最后，以大型航空铝板仿真实验举例验证该冲击载荷反演方法的可行性。
范志锋
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Complicated grief and posttraumatic stress after loss and separation under terror conditions
Journal of Traumatic Stress, Volume 37, Issue 1, Page 154-165, February 2024.Abstract The lives of people in conflict areas are often characterized by the experience of traumatic events frequently accompanied by loss and separation. These can equally trigger symptoms of posttraumatic stress disorder (PTSD) and complicated grief (CG).
Philipp Jann +3 more
wiley +1 more source
Flirting with a basic income in Canada: Were the lessons worth the risk of popular backlash?
International Social Security Review, Volume 77, Issue 1-2, Page 67-83, January-June 2024.Abstract Canada responded to the COVID‐19 pandemic with a series of supports, including direct payments to workers displaced by public health measures. While not a true basic income, the experience highlighted a number of issues including challenges with implementation and intergovernmental relations that affected public opinion and must be dealt with ...
Evelyn L. Forget, Sid Frankel
wiley +1 more source