Subjects: Psychology >> Developmental Psychology submitted time 2024-03-10
Abstract： Currently, depression is increasingly prevalent among children and adolescents, thereby raising concerns about emotional dysregulation in this population. The pivotal role of emotional regulation ability in maintaining emotional stability and effectively managing one’s emotional state during adolescence is becoming more apparent. Understanding the dynamic nature of emotion regulation and its multi-stage processing is crucial for comprehensively elucidating the characteristics and causes of emotional dysregulation in depressed adolescents. To capture the dynamic nature of emotion regulation, the extended process model divides the emotion regulation process into three stages: identification stage, selection stage, and implementation stage, highlighting their mutual influence. Building upon this model, our study examines the characteristics of depressed adolescents across these three stages of emotion regulation, revealing deficiencies within each stage. Given the interconnectedness and continuity between these stages, future research can systematically investigate which specific impairments or disruptions in emotional dysregulation affect subsequent stages among depressed adolescents; to what extent they do so; and whether directive interventions can mitigate such effects. To achieve this goal more comprehensively, we propose employing the following methods: 1) integrating EEG technology with drift diffusion models to reconstruct the dynamic process of emotion regulation; 2) conducting a comprehensive investigation on individuals with varying degrees of depressive symptoms during adolescence; 3) focusing on dual aspects of abnormal emotional reactivity to explore intervention pathways and measures targeting emotional dysregulation in depressed adolescents.
Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract：【目的】文章从最基本的概念、构词、历史脉络、特征和属性等方面，探析元宇宙最基础的特点和技术基础。【方法】通过对元宇宙定义的梳理和总结，分析其应用场景和技术构成。【结果】现阶段所理解的元宇宙只是雏形，随着技术的发展，元宇宙在未来将有着更加旺盛的生命力。【结论】元宇宙的媒介技术是构成元宇宙的底层基础，而从更宏观的视角去考量，元宇宙有着更加美好的未来。
Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract：随着我国网民数量的激增和互联网覆盖范围的攀升,国内专家学者对有声读物的研究呈现井喷之势。本文运用期刊文献分析法,对中国知网中以有声读物为主题的相关期刊论文进行分析整理,了解当前我国学界对于有声读物的研究现状。在前人研究的基础之上,对现阶段此类研究内容归纳为有声读物含义、受众类型、有声读物App以及播读评价体系等不同维度。通过梳理国内学者对有声读物的研究现状,结合目前有声读物市场的实际发展情况,阐述有声读物存在的问题、解决措施,以及有声读物播读评价体系的相关问题,以期对未来有声读物在营销策略制作、产品质量标准、品牌建设、宣传策略、有声读物的播读评价体系等方面的研究提供借鉴,进一步开展我国有声读物研究。
Subjects: Geosciences >> Geography submitted time 2022-03-29
Abstract：
Regionalization is to divide a large geographic area into a number of homogenous and spatially contiguous regions. It has been widely used in fields such as geography, cartography, ecology, environment management, socio-economy, and urban planning. Since the general regionalization problem has been proven to be NP-Hard, various models and solution methods for regionalization have be proposed since 1960s. The regionalization methods can be classified into four categories: exact, clustering-based, heuristic, and tree-based. However, the commonly used regionalization algorithms are difficult to solve the problem in an effective and efficient manner simultaneously. An improved iterative local search algorithm is proposed in this paper for the regionalization problem. There are six key mechanisms in the new algorithm: the search of moving boundary units to improve the current solution; the center-based approach to accelerate the computation of solution objective; the solution perturbation to escape from the state of local optimum; the frequent update of regional centers to reevaluate the solution; the population-based search to explore larger solution space; and the region repair to keep spatially contiguous regions. The regionalization experimentations on 55 benchmark instances show that the proposed algorithms outperforms ARISEL algorithm and SKATER algorithm in terms of sum-squared errors and adjusted Rand index. A case study of the climate regionalization using 60 attributes illustrates that the improved ILS is effective to delineate climate regions that are compatible with the precipitation, temperature and landform patterns.
Peer Review Status:
Awaiting Review
Subjects: Geosciences >> Geography Subjects: Management Science >> Management Engineering submitted time 2021-06-09
Abstract： This article proposes a matheuristic algorithm for the single-source facility location problem (SSCFLP) and its variants: SSCFLP with K facilities (SSCKFLP), SSCFLP with connective service areas (CFLSAP), and SSCFLP with K facilities and connective service areas (CKFLSAP). The algorithm starts from an initial solution, and then iteratively improves the solution by searching large-scale neighborhood of current solution. The neighborhood is defined by determining a subset of candidate facilities and a subset of customers: (1) randomly select a customer; (2) select Q nearest facilities and their customers from the current solution; (3) select nearest candidate facilities of all the customers; and (4) randomly drop some candidate facilities if too many facilities are selected in previous step. The size of neighborhood is critical to the performance of the algorithm: it is hard to solve an extra-large neighborhood and it is difficult to find a better solution in a small neighborhood. The value of Q is suggested according to the number of facilities in current solution. The current solution might be improved by finishing the following steps: (1) formulate a sub-problem model using the selecting facilities and customers; (2) solve the model and update the current solution using sub-problem solution; and (3) for CFLSAP or CKFLSAP, repair the non-connective service areas, and improve solution with local search operators. Two set of instances were generated to test the algorithm. Experimentation shows that the instances of SSCFLP and its variant problems can be solved by the proposed matheuristic algorithm effectively and efficiently. The solutions found by the proposed algorithm approximate optimal solutions or the lower bounds with average gaps of 0.01% for SSCFLP, 0.22% for CFLSAP, 0.00% for SSCKFLP, and 0.08% for CKFLSAP. Solution results show that the solution objective would be slightly increased by adding the contiguity constraints on SSCFLP or SSCKFLP. The optimal facility locations of SSCFLP/SSCKFLP might be different from those of CFLSAP/CKFLSAP. " "
Peer Review Status:Awaiting Review
Subjects: Geosciences >> Geography submitted time 2021-05-19
Abstract： This article proposes a matheuristic algorithm for the classical single-source facility location problem (SSCFLP). The algorithm starts from an initial solution, and then iteratively improves the solution by searching the large-scale neighborhoods. The initial solution is generated by a Lagrangian heuristic and the large neighborhoods are explored by solving sub-problems. The performance of the algorithm was tested on 5 set of benchmark instances. Experimentation showed that the instances could be solved effectively and efficiently. For the largest set of instances, the proposed matheuristic algorithm performs better than existing methods in terms of the solution quality, the computational time, the number of optimal solutions and the number of better solutions.
Peer Review Status:Awaiting Review
Subjects: Geosciences >> Geography submitted time 2021-05-19
Abstract： This article presents a hybrid algorithm for the service area problem. The design of service areas is one of the essential issues in providing efficient services in both the public and private sectors. For a geographical region with a number of small spatial units, the service area problem is to assign the service-demand units to the service-supply units such that each facility has a service area. The basic criteria for the service areas are the highest service accessibility, the contiguous service areas, and that the service demand does not exceed the service supply in each service area. A hybrid algorithm for the service area problem is proposed by extending iterative local search (ILS) algorithm with three schemes: population-based ILS, variable neighborhood descent (VND) search, and set partitioning. The performance of the algorithm was tested using 60 well-designed instances. Experimentation showed that the instances could be solved effectively and efficiently. The solutions found by the hybrid algorithm approximate optimal solutions or the lower bounds with an average gap of 0.15%.
Peer Review Status:Awaiting Review
Subjects: Geosciences >> Geography Subjects: Mathematics >> Control and Optimization. submitted time 2021-02-24
Abstract： Districting problems have been widely applied in geography, economics, environmental science, politics, business, public service and many other areas. The equal districting problem (EDP) arises in applications such as political redistricting, police patrol area delineation, sales territory design and some service area design. The important criteria for these problems are district equality, contiguity and compactness. A mixed integer linear programming (MILP) model and a hybrid algorithm are proposed for the EDP. The hybrid algorithm is designed by extending iterative local search (ILS) algorithm with three schemes: population-based ILS, variable neighborhood descent (VND) local search, and set partitioning. The performance of the algorithm was tested on five areas. Experimentation showed that the instances could be solved effectively and efficiently. The potential applications of the EDP in emergency services are also discussed.
Peer Review Status:Awaiting Review
Subjects: Geosciences >> Geography submitted time 2021-01-19
Abstract： 空间可达性是衡量公共服务设施公平性的重要指标，在医疗、教育、休闲等公共服务的布局规划中得到广泛应用。然而，现有可达性模型难以充分反映服务供需关系，计算指标也缺乏物理意义。本文提出新的可达性计算方法取代现有方法。该方法基于最优供需分配模型，将设施服务分配给需求者，根据分配结果计算空间可达性指标。给定服务设施与需求的空间分布，以最小化旅行成本为目标，顾及设施服务能力，采用经典的运输问题模型确定最优的服务供需分配方案，进而度量服务的空间可达性。以郑州市某区社区卫生服务为例，求解 25个中心与1333个居住小区的最优服务配置。使用最优配置结果确定每个设施的服务范围、每个居住小区使用服务的旅行时间，以及特定时间阈值的服务覆盖比率。与流行的两步移动搜索法相比，新方法的计算指标具有明确的物理意义。本文提出的可达性评价方法无需参数，计算高效，结果易于解释，在公共服务评价及设施布局规划方面具有应用潜力。
Peer Review Status:Awaiting Review
Subjects: Psychology >> Management Psychology submitted time 2018-11-14
Abstract： Traditional views argued that organizational citizenship behavior (OCBs) and counterproductive work behavior (CWBs) were opposite poles of the same construct, or negatively correlated and relatively independent two-dimensional structure. However, recent studies suggested that their relations were not as simple as imagined. They might have a modestly positive correlation under certain circumstances. Firstly, the antecedents of OCBs and CWBs, as well as cognitive evolution of their relations were reviewed; Secondly, in the integrated view of emotion and cognition, the mutual mechanisms between OCBs and CWBs from the perspective of Conservation of Resource Theory and Moral Balance Theory were explored; Finally, the future research directions were also discussed, such as exploring the boundary mechanism of mutual relationship through empirical study, verifying the mutual relationship by multiple methods, analyzing the dynamic change based on latent growth model, and exploring the management practices of them. "
Subjects: Biology >> Bioengineering submitted time 2017-07-24 Cooperative journals: 《中国生物工程杂志》
Abstract：研究证明人白血病抑制因子（hLIF）是一种对多种不同类型的细胞和组织具有重要功能的细胞因子，其独特的生物学特性使其被广泛应用。本文介绍了自制的具有生物活性的hLIF，将hLIF基因克隆到pET32a中，并利用硫氧还蛋白（Trx）作为融合配体，在大肠杆菌中成功表达可溶性融合蛋白Trx-hLIF。亲和层析纯化后利用SDS-PAGE和Western blot对纯化结果进行检验。利用肠激酶（EK酶）切割融合蛋白，释放hLIF，随后通过简单的阳离子交换得到纯度高达98.1％的hLIF 4.75mg。小鼠M1髓系白血病细胞增殖分析测定纯化的rhLIF的功能与hLIF具有相似的生物活性，EC50为5ng/mL，对应的比活性为0.5×107 IU/mg。
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