基于CiteSpace的中国情境下绩效管理研究知识图谱与展望

厘清中国情境下的绩效管理研究知识图谱对绩效管理的深入研究具有重要的价值与指导意义。采用科学文献计量方法,运用CiteSpace可视化工具,通过关键词共现、聚类分析等,定量地展示自1975年以来中国情境下绩效管理领域研究的演进过程。基于该主题年度发文量将该领域研究划分为两个阶段：探索阶段(1975—2014年)、系统深化与同步创新阶段(2015—2022年)。对中国情境下绩效管理研究两个阶段的论文进行关键词聚类,通过关键词聚类时间线视图和关键词战略图,定量地展示中国情境下绩效管理研究随时间变化的动态过程;基于近10年来该领域研究文献关键词战略图和关键词突现图谱,对中国情境下绩效管理研究热点的未来趋势进行展望。     

Integrating competency modeling in talent management: Framework for implications in a disruptive environment

This research explores the challenges encountered in integrating competency modeling (CM) in talent management (TM) and proposes a framework for this integration. Using CM practices and TM implementation perspectives, a framework was developed for integrating CM in TM. Furthermore, this research used a multiple cross-case study design approach involving organizations practicing CM. In-depth interviews with practicing HR managers helped identify the challenges and issues related to CM integration in TM. To address these challenges, a framework involving multiple alignments with TM was developed. The dimensions of this alignment comprise functionality, information system, capability, governance, and contextual integration. The integration aspects of CM in TM, which have been discussed in detail, will assist researchers and practitioners.     

对地面数字测图管理工作的探索与思考

在分析地面数字测图工作的特点和流程的基础上,结合地面数字测图的具体实践和数字测图管理工作的现状,对地面数字测图的作业方法和工程管理如工程方案设计、工作人员、产品质量的管理进行了探讨,提出了具体的建议和管理措施。     

京津冀研究的热点与前沿*——基于CiteSpace的知识图谱分析

[目的]近年来,京津冀问题广受学术界关注,相关研究成果大量涌现,正逐步发展成为一个新的知识领域。分析京津冀领域现有文献,识别京津冀研究的知识聚类与研究网络,以从整体把握其研究动态和发展趋势,并为今后相关研究提供新的思路和参考。[方法]文章利用科学计量工具Cite Space对京津冀研究的基本特征、研究力量、研究热点、研究前沿等进行了可视化分析。[结果]京津冀研究大致经历了萌芽(1992—2005年)、缓慢发展(2006—2013年)和迅猛增长(2014—2017年) 3个阶段;研究群体主要来自京冀,学者间的合作交流较少,且缺乏京津冀之外研究者的参与;研究内容主要集中在京津冀协同发展、区域经济、生态环境等方面,其中"京津冀协同发展"受关注度最高;协同发展、环境治理、产业转移、雄安新区等是近年来的研究前沿领域。[结论]在京津冀现有研究的基础上,未来有必要突破"协同发展"的框架,拓展研究范畴,创新研究方法,构建研究网络,从更广泛的视角进行多元研究。     

分布式属性相似空间插值算法及其对流域土壤属性插值的计算性能评估

目的 如何准确、高效地实现点源数据向面源数据的空间拓展,是现代数字土壤制图技术实现由中小尺度制图转向大尺度、乃至全球尺度制图所需解决的关键问题之一。方法 依托前期提出的局部属性相似性加权回归空间插值算法（LASWR）,文章构建了一种基于云计算技术Hadoop的分布式空间插值算法（DLASWR）,以应对大规模数字土壤制图的海量数据处理需要。DLASWR算法是基于Hadoop的MapReduce框架结构。算法的核心思想在于：（1）将待插值数据集分割成多个子数据集,由单个Map任务使用集中式LASWR算法对一个子数据集进行插值;（2）由Reduce任务归并所有Map任务的插值结果,并作为最终结果输出。结果 对实际土壤样点属性的空间插值实验结果表明DLASWR算法具有良好的加速性能,与集中式LASWR算法相比显著提高了空间插值的计算效率。结论 DLASWR算法可为数字土壤制图领域当前应用的空间插值方法由传统的集中式计算拓展成分布式计算提供技术参考。     

用于旋转映射信号的多天线联合Turbo均衡算法

旋转映射信号将编码比特旋转移位后映射为符号,同时采用了隐性交织、加扰等技术,具有交织复杂度低、信道效率高等特点,是一种典型且使用较为广泛的短波通信信号。针对第三方接收条件下,频率选择性衰落造成该类信号难以有效接收的问题,推导了该类信号的软符号解映射、映射方法,提出了一种针对该类信号的多天线联合Turbo均衡算法,实现了软信息在均衡与译码之间的迭代交换。典型短波信道下的仿真结果表明,迭代4次后的两天线联合Turbo均衡在10-5误码率时相对两天线硬判决译码提供了约4 dB的增益,相对两天线软判决译码提供了约1 dB的增益,在10-4误码率时相对单天线Turbo均衡提供了约5.5 dB的增益。     

认知能力、社会互动方式与家庭金融资产选择

本文运用CFPS2016数据,研究认知能力与社会互动方式对家庭资产选择的影响.研究发现,认知能力对家庭参与正规金融市场和持有风险资产占比有显著的正向作用,对家庭参与非正规金融市场有显著的抑制作用;线上社会互动对家庭参与正规金融市场和持有风险资产占比的促进作用要显著大于线下社会互动,并对线下社会互动有挤出效应;而线下社会...     

Cognitive and Non-Cognitive Impacts of High-Ability Peers in Early Years*

The sorting of students into ability groups is one of the most common, controversial and long-examined educational practices. Ability grouping also mechanically changes peer groups. We provide novel evidence on the cognitive and non-cognitive impacts in early years, of being exposed to higher-ability classroom peers through being assigned to the top within-class ability group. We exploit panel data from the UK Millennium Cohort Study, which allows us to construct trajectories of the cognitive and non-cognitive development of children from birth to entry into primary school. The data also record school grouping policies and the specific within-class group assignment of each child, by subject. We combine these rich data with an instrumental variable design using child-level variation in group assignment due to month of birth, in order to measure the local average treatment effect (LATE) of being assigned to the highest-ability peer group. We find that if a marginal student is assigned higher-ability peers, this significantly reduces their cognitive achievement in mathematics, and has no impact on literacy. There are countervailing impacts on non-cognitive outcomes for the marginal student assigned higher-ability peers: although they are more motivated to study and parents respond with an improved home learning environment, these children have more study-related difficulties and their relations with their peers significantly worsen. These findings have important policy implications for the use and design of within-class ability grouping in early years.     

Stock price synchronicity,cognitive biases,and momentum

The momentum anomaly is widely attributed to investor cognitive biases, but the trigger of cognitive biases is largely unexplored. In this study, inspired by psychology studies linking cognitive biases to the noisiness of information, we examine whether momentum returns are associated with high stock price synchronicity, a manifestation of noisy firm-specific information. Our results demonstrate that momentum is more pronounced in the presence of high stock price synchronicity. This finding is robust to other explanations and firm characteristics. We also find that stock price synchronicity boosts the profitability of momentum by amplifying investor underreaction to new information.     

Seismic vulnerability assessment of historical urban centres: case study of the old city centre of Faro,Portugal

The necessity of implementing seismic vulnerability assessment procedures to the Portuguese building stock has become urgent as recent predictions indicate the possibility of the occurrence of an earthquake similar to the well-known 1755 Lisbon earthquake within the next 50 years. Obviously, at first instance, large-scale procedures should be used rather than more extensive and accurate methodologies suited for individual buildings assessment. Moreover, it is fundamental to operate in the most vulnerable areas in our built environment, typically, the historical urban centres. As it is recognised, it is within these areas, that old masonry buildings are generally concentrated, being both the most representative and vulnerable constructive typology. Comprising 354 buildings, the case study of the old city centre of Faro is herein presented aiming at analysing and evaluating the seismic vulnerability of its old masonry building stock. In order to achieve these objectives, a vulnerability-index-based methodology was used for the assessment of the seismic vulnerability of the old masonry buildings belonging to the historical centre of Faro (Ribeirinha area) carried out through detailed inspection and survey. The results obtained were analysed using a geographical information system tool. The integration of such vulnerability and loss results represents a valuable tool for city councils and/or regional authorities to plan interventions, on the basis of a global view of the site under analysis, leading this way to more accurate and comprehensive risk mitigation strategies which comply with the requirements of safety and emergency planning. The application of this large-scale scoring methodology has confirmed moderate-to-high values for the vulnerability of this particular area, which combined with its high seismicity, may be quite alarming.