Relocation of Uppermost Mantle Earthquakes in the Atlas Mountains, Morocco

Upper mantle earthquakes are usually associated with plate boundary tectonics, but rarely occur beneath intracontinental orogenic belts. In the Moroccan Atlas Mountains, earthquakes determined at subcrustal depths are a controversial topic because they are few in number compared to subduction zones and are not related to plate boundary tectonics. A recent increase of broadband stations in Morocco has revealed numerous events below the Atlas belts, thought to occur from the upper mantle. Using additional available stations, these Atlas events were relocated and new epicenter resolutions were acquired following rigorous depth and RMS error criteria. 309 events were reprocessed and epicenter depths obtained were between 31 and 240 km during the last 23 years. Temporal variations of High Atlas events appear to be continually dipping while Anti Atlas events show no temporal variation trends. In addition, a recent strong event M6.8 occurred in September 2023 at the transition crust-uppermost mantle followed by several aftershocks which have been relocated at uppermost mantle depths. These events support delamination model under the High-Middle Atlas which could flow southward beneath the Anti Atlas lithosphere, and explain the large variation observed in lithosphere thickness between the High-Middle Atlas, and the Anti Atlas. Subcrustal events beneath the Atlas may be related to upper mantle earthquakes beneath the neighboring Canary Islands which have experienced recent swarms and eruptions. This possible correlation cannot be excluded since descending and ascending material is necessary for a regional geodynamic balance.

The 2023 Turkey earthquake doublet: Earthquake relocation, seismic tomography, and stress field inversion

On February 6,2023,two earthquakes with magnitudes of M_(W) 7.8 and M_(W) 7.5 struck southeastern Turkey,causing significant casualties and economic losses.These seismic events occurred along the East Anatolian Fault Zone,a convergent boundary between the Arabian Plate and the Anatolian Subplate.In this study,we analyze the M_(W) 7.8 and M_(W) 7.5 earthquakes by comparing their aftershock relocations,tomographic images,and stress field inversions.The earthquakes were localized in the upper crust and exhibited steep dip angles.Furthermore,the aftershocks occurred either close to the boundaries of low and high P-wave velocity anomaly zones or within the low P-wave velocity anomaly zones.The East Anatolia Fault,associated with the M_(W) 7.8 earthquake,and the SürgüFault,related to the M_(W) 7.5 earthquake,predominantly experienced shear stress.However,their western sections experienced a combination of strike-slip and tensile stresses in addition to shear stress.The ruptures of the M_(W) 7.8 and M_(W) 7.5 earthquakes appear to have bridged a seismic gap that had seen sparse seismicity over the past 200 years prior to the 2023 Turkey earthquake sequence.

From Poverty to Prosperity How relocation to Aktas Town is a living-standards leap for Xinjiang people

"3,000 yuan per month,"proclaimed Abdulaziz Mehmet,a Uygur worker at Dena Shoes Factory in Kargilik County of Xinjiang Uygur Autonomous Region.Why is it noteworthy?Bangkok's minimum wage in 2024 is US$327.65,while Jakarta is US$332.92.Mehmet is earning significantly more than what he would getin either of the national capitals.

Enhancing the synchronizability of networks by rewiring based on tabu search and a local greedy algorithm

By considering the eigenratio of the Laplacian matrix as the synchronizability measure, this paper presents an efficient method to enhance the synchronizability of undirected and unweighted networks via rewiring. The rewiring method combines the use of tabu search and a local greedy algorithm so that an effective search of solutions can be achieved. As demonstrated in the simulation results, the performance of the proposed approach outperforms the existing methods for a large variety of initial networks, both in terms of speed and quality of solutions.

Smart Rewiring:Improving Network Robustness Faster

Previous work puts forward a random edge rewiring method which is capable of improving the network robustness noticeably, while it lacks further discussions about how to improve the robustness faster. In this study, the detailed analysis of the structures of improved networks show that regenerating the edges between high-degree nodes can enhance the robustness against a targeted attack. Therefore, we propose a novel rewiring strategy based on regenerating more edges between high-degree nodes, called smart rewiring, which could speed up the increase of the robustness index effectively. The smart rewiring method also explains why positive degree-degree correlation could enhance network robustness.

Contagion dynamics on adaptive multiplex networks with awareness-dependent rewiring

Over the last few years,the interplay between contagion dynamics of social influences(e.g.,human awareness,risk perception,and information dissemination)and biological infections has been extensively investigated within the framework of multiplex networks.The vast majority of existing multiplex network spreading models typically resort to heterogeneous mean-field approximation and microscopic Markov chain approaches.Such approaches usually manifest richer dynamical properties on multiplex networks than those on simplex networks;however,they fall short of a subtle analysis of the variations in connections between nodes of the network and fail to account for the adaptive behavioral changes among individuals in response to epidemic outbreaks.To transcend these limitations,in this paper we develop a highly integrated effective degree approach to modeling epidemic and awareness spreading processes on multiplex networks coupled with awareness-dependent adaptive rewiring.This approach keeps track of the number of nearest neighbors in each state of an individual;consequently,it allows for the integration of changes in local contacts into the multiplex network model.We derive a formula for the threshold condition of contagion outbreak.Also,we provide a lower bound for the threshold parameter to indicate the effect of adaptive rewiring.The threshold analysis is confirmed by extensive simulations.Our results show that awareness-dependent link rewiring plays an important role in enhancing the transmission threshold as well as lowering the epidemic prevalence.Moreover,it is revealed that intensified awareness diffusion in conjunction with enhanced link rewiring makes a greater contribution to disease prevention and control.In addition,the critical phenomenon is observed in the dependence of the epidemic threshold on the awareness diffusion rate,supporting the metacritical point previously reported in literature.This work may shed light on understanding of the interplay between epidemic dynamics and social contagion on adaptive networks.

Enhancing synchronizability by rewiring networks

According to different forms of synchronized region, complex networks are divided into type Ⅰ （unbounded synchronization region） and type Ⅱ （bounded synchronization region） networks. This paper presents a rewiring algorithm to enhance the synchronizability of type Ⅰ and type Ⅱ networks. By utilizing the algorithm for an unweighted and undirected network, a better synchronizability of network with the same number of nodes and edges can be obtained. Numerical simulations on several different network models are used to support the proposed procedure. The relationship between different topological properties of the networks and the number of rewirings are shown. It finds that the final optimized network is independent of the initial network, and becomes homogeneous. In addition the optimized networks have similar structural properties in the sense of degree, and node and edge betweenness centralities. However, they do not have similar cluster coefficients for type Ⅱ networks. The research may be useful for designing more synchronizable networks and understanding the synchronization behaviour of networks.

Three Gorges Project:Relocating People

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Relocating 1 Million People

The yangtze River Three Gorges Project is the largest water-conservancy project in the world. After its completion in 2009, its total installed capacity Will be 18.25 million kW With an annual power generation of 84. 7 billion kWh. The total storage capacity will be 39.3 billion cubic meters, and the anti-flood storage capacity Will be 22. 15 billion cubic meters. The project will effectively control flooding along the Y8ngtZe River protect 1.53 million hectares of land, protect the life and property of 15 million people in the middle and lower reaches of the Yangtze River and improve the river’s transportation capacity Many are concerned about the inhabitants in the reservoir area who have to be relocated. According to statistics, over the 17-year construction period, 1.038 million Chongqing people will be relocated, comprising 85 percent of the total number of people who have to be relocated. Such grand scale relocation has rarely been seen in the history of China and the world. To gain a better understanding of the relocation process, staff reporter Wang Xin visited some relocated settlements and interviewed Gan Yuping, vice mayor of Chongqing Municipality and head of the relocation project.

Influence Mechanism for Assessment of Implementation Effect of Policy of Relocating the Poor

Based on survey data of nine poverty-stricken counties in Wumen mountainous area,using the ordinal Probit model,this paper analyzed the influence mechanism for the assessment of the implementation effect of the policy of relocating the poor. It obtained the following results.( i) Material security and social environment have a positive influence on the assessment of the policy of relocating the poor.( ii) In terms of material security,there is no significant relationship between the employment environment and the assessment of the policy of relocating the poor. Per capita annual income,per capita housing,income-increasing channels,and endowment insurance have significant effects on the assessment of the policy of relocating the poor.( iii) In social environment,public services,infrastructure,neighborhood relations,and environmental sanitation have significant effects on the assessment of the policy of relocating the poor,while there is no significant relationship between the awareness of poverty alleviation policies and the effect assessment of the policy of relocating the poor.( iv) The severer the poverty,the more significant the assessment of the implementation effect of the policy of relocating the poor. In accordance with the above results,it came up with recommendations for targeted poverty alleviation.

Adaptive Route Sink Relocation Using Cluster Head Chain Cycling Model in WSN

Wireless Sensor Networks(WSN)have revolutionized the processes involved in industrial communication.However,the most important challenge faced by WSN sensors is the presence of limited energy.Multiple research inves-tigations have been conducted so far on how to prolong the energy in WSN.This phenomenon is a result of inability of the network to have battery powered-sensor terminal.Energy-efficient routing on packetflow is a parallel phenomenon to delay nature,whereas the primary energy gets wasted as a result of WSN holes.Energy holes are present in the vicinity of sink and it is an important efficient-routing protocol for WSNs.In order to solve the issues discussed above,an energy-efficient routing protocol is proposed in this study named as Adaptive Route Decision Sink Relocation Protocol using Cluster Head Chain Cycling approach(ARDSR-CHC2H).The proposed method aims at improved communica-tion at sink-inviting routes.At this point,Cluster Head Node(CHN)is selected,since it consumes low energy and permits one node to communicate with others in two groups.The main purpose of the proposed model is to reduce energy con-sumption and define new interchange technology.A comparison of simulation results demonstrates that the proposed algorithm achieved low cluster creation time,better network error and high Packet Delivery Rate with less network failure.

征迁改造居民的“知情意”——风险感知、政府信任及焦虑情绪对政策支持意愿的影响

以人为核心、关注民情、尊重民意是推进新型城镇化征迁改造的核心理念。已有研究主要关注居民的多元理性认知对征迁改造意愿的影响,对于情绪在认知与意愿的关系中发挥何种作用仍缺乏解释。运用质性研究方法,开发涵盖生计风险、适应风险和利益风险3个维度的征迁改造风险感知多维构念,以焦虑情绪为中介,建立征迁改造风险感知和政府信任对政策支持意愿影响的“知-情-意”模型。通过对18个新型城镇化改造试点地区居民的大规模实证调查发现:焦虑情绪在征迁改造风险感知对支持意愿的负向影响路径中发挥部分中介作用;政府信任通过直接方式以及减弱焦虑情绪的间接方式正向影响支持意愿,且直接效应显著大于间接效应。将焦虑情绪这一重要中介因素纳入居民意愿形成的分析框架,从及时评估并缓解居民焦虑情绪、面向不同群体实施差异化征迁改造政策、打通民意的“最先和最后一公里”以及提升基层政府公信力等方面为推动新型城镇化建设、避免群体性事件提供政策启示。

The Reciprocal and Symbiotic Effects of Industrial Relocation between China and BRI Countries

Reciprocity and symbiosis are essential to the creation of“a community with a shared future for mankind”,and industrial relocation is a key strategy for implementing the Belt and Road Initiative(BRI).This paper investigates the reciprocal and symbiotic effects of industrial relocation between China and BRI countries,and performs an empirical test using the Eora global supply chain database of 2002-2020.Our findings suggest that there has been an increasing level of industrial reciprocity and symbiosis between China and BRI countries,but great differences exist across sectors and regions;industrial relocation between China and BRI countries is conducive to two-way industrial reciprocity and symbiosis primarily through regional value chain cooperation and an increasing level of industrial agglomeration.The most substantial effects have been observed in industrial relocation involving developed BRI countries,in medium-and high-tech sectors,and following the announcement of the BRI.

2023年12月18日甘肃积石山6.2级地震震源参数和破裂特征

2023年12月18日23时59分(北京时间)甘肃积石山发生6.2地震。中国地震局地球物理研究所在震后启动快速响应,组织相关领域研究人员对此次地震的震源参数、震源机制、破裂过程和地震辐射能量等进行了估计,余震序列进行了重定位,基于震源模型进行了震动图模拟、同震形变场模拟。结果表明,此次地震发生在拉脊山东侧,以逆冲机制为主,能量集中在前约8 s内释放;极震区震动烈度可能达Ⅷ度以上,可能的受灾范围近6 000 km~2;此次地震引起了显著的同震位移,最大水平向位移达到7.8 cm、垂直向位移达到15.8 cm。

Narratives of Traumatic Memory and Relocation of Victims in The Lotus and the Storm

Since the 1990s,an increasing number of 1.5 generation Vietnamese-American writers who were raised and educated in America have emerged.Their writings have explored the devastating effects of the Vietnam War on immigrants,offering American literature an alternative angle on the conflict.Lan Cao,a Vietnamese-American,is the author of The Lotus and the Storm which set in war-torn Vietnam.The novel’s main characters go through the excruciating anguish of losing families and displacement.Meanwhile,they suffered from everlasting trauma although they immigrated to the United States.This essay examines the novel’s ongoing war trauma and post-war memories,illustrates the post-traumatic syndrome brought on by the Vietnam War in the Vietnamese people as a whole,and investigates how practitioners heal the trauma.

在华外资企业外迁的动因、影响及应对策略

近年来,部分行业的外资企业外迁有所增加,引发了社会各界比较广泛的关注。外资企业外迁的动因涉及综合商务成本上升、国际环境和地缘政治影响、其他国家营商环境与招商引资吸引,以及国内企业竞争等多重因素。对外资企业外迁的利弊要综合分析,既要看到外迁带来的外贸出口份额减少、对GDP和税收增长的不利影响、给社会就业带来的压力等消极影响,也要看到外迁对国内产业转型升级和提升中国在全球价值链中的地位具有一定积极作用。针对部分行业外资企业的外迁现象,建议相关政府部门采取持续优化营商环境、进一步落实“负面清单”、鼓励外资企业在国内异地搬迁转移等措施,最大限度地减少外资企业外迁的数量与规模,促进外资企业在中国经济高质量发展中发挥出更大的推动作用。

城乡融合发展进程中跨县搬迁社区运行逻辑及反思——基于社区行动主体性视角

跨县搬迁社区秩序重建是一个涉及主体、空间、要素和制度的动态复杂过程。本研究以云南省昭通市J安置区为例,基于社区行动主体性理论视角,构建“主体-空间-要素-制度”四位一体分析框架,考察跨县搬迁社区的运行逻辑。“断根”阶段的行动目标是“断穷根”,此阶段社区行动更多指向迁出地传统行动机制延续及再生产;“融入”阶段的行动目标是“能融入”,此阶段社区行动主要包括就业生计、社区治理、社会适应、民族融合行动等。现实经验看,安置区内多元行动主体因受多种因素影响,一方面延续传统生计的行动逻辑,另一方面“融入”行动重塑也面临就业生计重塑难、社区治理重塑难、社会适应重塑难和民族融合重塑难四重困境,由此使跨县搬迁社区运行呈现“搬迁未断根”与“安置难融入”共存的实践特征。破解上述困境必须从衔接新型城镇化和城乡融合发展战略出发,一方面聚焦大型搬迁安置区的现实问题,健全以属地为主、迁出地为辅的协同工作机制,完善县域公共服务,避免安置区陷入社会化“孤岛”;另一方面重塑共同体意识,健全安置区自治体系,强化搬迁群众内生动力,提前谋划过渡期结束后的社会融合议题,切实规避“扶而不退”的负面效应。

新时代全面推进乡村振兴阶段易地搬迁政策的逻辑转换

在传统因贫移民的历史根基上,历经40余年的演变发展,党中央围绕易地搬迁统筹部署,形成了一套具有深厚历史底蕴和鲜明制度特色的工作逻辑,孕育了丰硕的实践成果。在新时代全面推进乡村振兴阶段,易地搬迁政策面临如何应对后续帮扶和“三农”工作战略转型的双重考验,需要实现搬迁目标由脱贫向振兴、搬迁对象由贫困群体向五类村庄、搬迁方式由扶贫集中搬迁向统筹搬迁撤并、搬迁机制由聚力攻坚向高质量发展的逻辑转变。由此,应以历史视域和开放视野分析新时代全面推进乡村振兴阶段易地搬迁政策的逻辑转换问题,接续推进从全面小康迈向共同富裕的新征程。

以整体搬迁为契机,推动化学实验教学中心高质量发展——以中山大学化学国家级实验教学示范中心为例

为配合学校“三校区五校园”办学格局的整体部署,中山大学化学国家级实验教学示范中心积极推进整体搬迁,在学校和化学学院的大力支持下,完成了新的空间布局和实验室优化升级,全面提升了综合实力。中心搬迁调整历时2年,硬件条件得到了飞跃式提升,并结合学校新形势、新布局,与时俱进,构建简洁高效科学的管理系统,推动实验教学中心持续发展,开创了中心“高质量办学”新发展格局。

云南盐津地区两种地震序列的地震活动性分析

2020年9月—2021年1月,云南盐津地区出现了密集中小地震活动。为获取更完备的地震目录和更准确的震源参数,利用2020年1月—2021年2月云南及其邻区地震台网记录到地震事件的观测报告和连续波形,采用匹配定位方法检测到了1340次地震事件。利用联合波形互相关的双差地震定位方法进行重定位,获得了检测目录中351次地震的精确位置,对精定位后的地震活动时空分布特征进行分析研究,结果表明:盐津地区发生的密集中小地震活动为先后发生的2种不同类型的地震序列,沿两条不同走向和倾角的断裂分布,其中2020年9—10月的M_(L)3.9震群型地震序列发生在NNW走向、倾角约为75°的盐津—筠连断裂;2021年1月的M_(L)5.2孤立型地震序列发生在近SN走向、断层线与盐津—筠连断裂呈约30°夹角且倾角约为50°的隐伏断裂。