德国矿山安全健康管理与标准体系及其特征

概述了德国矿山安全健康管理体系，阐述了政府部门和矿业公会各自职责、相互关系及其监管特点；从标准层次和标准制定与管理两个方面，介绍了德国矿山安全健康标准体系，揭示了德国矿山安全健康标准体系的特征；为我国矿山安全健康管理与标准体系建设提供参考。     

Optimal investment,derivative demand,and arbitrage under price impact

This paper studies the optimal investment problem with random endowment in an inventory‐based price impact model with competitive market makers. Our goal is to analyze how price impact affects optimal policies, as well as both pricing rules and demand schedules for contingent claims. For exponential market makers preferences, we establish two effects due to price impact: constrained trading and nonlinear hedging costs. To the former, wealth processes in the impact model are identified with those in a model without impact, but with constrained trading, where the (random) constraint set is generically neither closed nor convex. Regarding hedging, nonlinear hedging costs motivate the study of arbitrage free prices for the claim. We provide three such notions, which coincide in the frictionless case, but which dramatically differ in the presence of price impact. Additionally, we show arbitrage opportunities, should they arise from claim prices, can be exploited only for limited position sizes, and may be ignored if outweighed by hedging considerations. We also show that arbitrage‐inducing prices may arise endogenously in equilibrium, and that equilibrium positions are inversely proportional to the market makers' representative risk aversion. Therefore, large positions endogenously arise in the limit of either market maker risk neutrality, or a large number of market makers.     

Building subsidiary local responsiveness: (When) does the directionality of intrafirm knowledge transfers matter?

The present study focuses on effects of subsidiary internal knowledge-based activities—knowledge transfer and reverse knowledge transfer—and absorptive capacity on local responsiveness. We also examine whether absorptive capacity, shared values, and psychological safety, representing constituents of the motivation-opportunity-ability model of behavior, moderate relationships of subsidiary internal knowledge-based activities with responsiveness. Based on a sample of 173 Chinese subsidiaries, the results suggest knowledge transfer and absorptive capacity facilitate local responsiveness. Shared values moderates positively and absorptive capacity negatively, the relationship between knowledge transfer and responsiveness. Psychological safety strengthens the link between reverse knowledge transfer and local responsiveness.     

On the “Invisible Inventory Conundrum” in RFID‐Equipped Supply Chains: A Data Science Approach to Assessing Tag Performance

Recent trade reports suggest that RFID implementation continues to lag lofty projections. A primary concern is that, despite the high cost of implementing RFID systems, realized read‐rates fall short of expectations. This results in the invisible inventory conundrum whereby tagged merchandise may still not be accurately represented in inventory records. Drawing from data science to address this issue, we ask: How can directed data mining models be used to identify laboratory test performance criteria for RFID tags that operate reliably across the idiosyncratic facilities (i.e., unique DCs, warehouses, and stores) that comprise apparel retailers’ supply chains? We investigate this question by advancing a methodology that integrates laboratory test performance data, field tests of RFID tags fixed to apparel items and scanned under normal operating conditions, and the application of five directed data mining models to the integrated data set of laboratory and field test results. Our analyses of 45,416 observations show that two directed data mining models may identify—with near‐100% accuracy—laboratory test criteria that discriminate tags having 99% or greater read‐rates in the field. Accordingly, our study validates a generalizable methodology for identifying technical performance standards for tags that operate reliably within apparel retailers’ supply chains.     

High-speed rail and inventory reduction: firm-level evidence from China

Using a balanced panel of manufacturing firms from China between 2007 and 2013, we estimate that being connected to a high-speed rail (HSR) system leads to 9.5% reduction in local firms’ input inventory spending. The effect is stronger for downstream industries and private enterprises. A back-of-envelope calculation suggests that each dollar of HSR investment reduces input inventory stock by 12 cents, which is significantly larger than the effects found in previous studies based on highway or road investment. Declines in transportation and communication cost, as well as agglomeration effect, are identified as plausible mechanisms. Our findings reveal a micro channel through which improved transport infrastructure brings about economic gains, and contribute to the cost-benefit assessment of HSR investment.     

浅析物联网技术在建筑工程施工安全管理中的应用

随着我国社会经济的发展,工程技术的不断进步,越来越多的新技术投入工程施工中来,使得施工安全环境愈加复杂。传统的施工安全管理形式面临严峻挑战。为了应对复杂严峻的挑战,需要新的管理形式。在社会高度信息化背景下,物联网技术正在蓬勃发展,将其引入施工安全管理中恰逢其时。论文讨论了新技术环境下施工安全存在的问题,并探讨了物联网技术在施工安全管理中的应用。     

Using the past to map out the future of occupational health and safety research: where do we go from here?

Abstract

The purpose of this study is to take stock of the extant research on occupational health and safety (OHS) with the aim of identifying gaps and mapping out a future research agenda for human resource management (HRM) scholars. A comprehensive review of OHS research from 1956 to 2019 was first conducted. A total of 564 articles from 17 leading journals were then identified and categorized into five distinct, yet inter-related, themes: (1) antecedents and work-related factors influencing OHS; (2) industrial policy and regulations surrounding OHS; (3) OHS management practices; (4) approaches to, and models of, managing OHS and (5) outcomes of OHS management. The review also discusses OHS research methodologies and design foci. Overall, we found that OHS research is poorly integrated into the field of HRM, and we identify a plethora of opportunities for HR researchers to add value to this field of research. A future agenda is formulated, encompassing new OHS theory-building, novel directions for empirical research, and innovations in research design and methodology.     

Factors contributing to injury severity in work zone related crashes in New Zealand

Roadworks take place frequently on existing roads in New Zealand. The adverse effects of poor road conditions and reduced road width due to the presence of a work zone on the safety of road users and workers at the work zone have been a matter of concern. Several studies have been conducted to examine the risk factors contributing to the occurrence of road crashes in work zones in different countries. Slow-moving and stopped vehicles near work zones have been found to be the primary cause of crashes and casualties in the work zones. Excessive speed of passing traffic has also been recognized as a crucial factor contributing to work zone related crashes in New Zealand. This study examined the effect of possible risk factors contributing to severe injury and fatality in work zone related crashes in New Zealand. A multinomial logistic regression model was established to determine the association between crash severity and factors such as road environment, vehicle attributes, driver behavior, and crash circumstances, based on the information available on 453 road crashes during the period from 2008 to 2013. The results indicated that the time period, vehicle involvement, and presence of vulnerable road users were the factors that determined the crash severity in work zones. This implies that improvements are required in traffic control and management measures in work zones to enhance road safety in the long run.     

Total factor productivity growth in Central and Eastern Europe before,during and after the global financial crisis

This article presents growth accounting results for 11 EU countries from Central and Eastern Europe for the years 1996–2016. Its contributions include the estimation of new capital stock series and adjustment for the utilisation of capital stock. Before the crisis, growth in total factor productivity (TFP) was the main contributor to output growth in Slovenia, Hungary and Slovakia, while capital deepening was more important in the Czech Republic, Croatia and Poland. During the global financial crisis the contributions of TFP and capital growth differed markedly across the countries, reflecting the very diverse dynamics of the crisis. After the crisis the contribution of TFP growth has been negligible in all of the sample countries coinciding with generally weak output growth. The results are generally robust to changes in estimation methods and parametrisations, but some assumptions regarding the construction of the capital stock series are critical for the results.     

浅谈标准化管理对提升海外工程项目安全执行力的作用

有效的管理,是保障项目顺利开展的必要条件。其中安全管理的落实,更是作为项目进度计划得以保证的前提和基本要素。俗话说,无规矩,无以成方圆。在海外项目业主及业主委派咨询(监理)公司不断关注和提升施工中安全、健康管理要求的当前背景下,承包商需要如何应对并展开相关工作,显得尤为重要。本文以中国港湾卡塔尔多哈新港项目为参考,浅析海外施工项目中标准化管理模式对提升整体项目安全执行力的作用。