准确反映房地产价格水平的难点与对策研究

 房地产是一种有别于日常消费品的特殊商品：从经济形态看,既具有投资属性又具有消费属性;从物质形态看,具有固定性、耐久性和唯一性。房地产价格作为房地产经济运行中重要、敏感的市场信号,其价格水平及波动越来越受到社会各界的高度关注。但由于影响房地产价格水平的因素多而复杂,准确反映房地产价格水平及其变化的工作在全球范围都面临着严峻的挑战,我国也不例外。 基于不同类型商品价格指数必须遵从共同的基本规律和要求,以及房价问题的社会关注度和敏感性,本文在理清当前我国房地产价格统计工作现状并分析所存在难点及问题的基础上,重点探讨准确反映新建商品房销售价格水平的思路,提出进一步改革和完善我国房地产价格统计制度和方法、改进房地产价格统计各环节的工作和规范房地产价格信息发布,以更加准确地反映房地产价格水平及其波动的对策和可行性建议。     

Feral pigeon (Columba livia var. domestica) management in low-density urban areas: prevention is better than cure

Urban Ecosystems - Currently, there are naturalized populations of feral pigeon (Columba livia var. domestica) worldwide with an estimated global population between 165 and 330 million individuals....     

Recognizing nurse stakeholder dissonance as a critical determinant of patient safety in new healthcare information technologies

Proper identification of all stakeholders and the comprehensive assessment of their evolving and often conflicting Needs, Wants, and Desires (NWDs) is a fundamental principle of human factors science and human-centered systems engineering; it is not yet a consistent element in development and deployment of new health information technologies (HIT). As the single largest group of healthcare professionals, nurses are critical stakeholders for these new technologies. Careful analysis can reveal nurse stakeholder dissonance (NSD) when integrating new technologies into the healthcare environment. Stakeholder dissonance is a term that describes the conflict between the NWDs of different stakeholders which, if left unresolved, can result in dissatisfaction, workarounds, errors, and threats to patient safety. Three case studies drawn from the authors' experience in a variety of acute-care settings where new HITs have been recently deployed are examined to illustrate the concept of NSD. Conflicting NWDs, other stakeholders, and possible root causes of the NSD are analyzed and mapped to threats to patient safety. Lessons learned, practical guidance for anticipating, identifying, and mitigating NSD, future research and implications for HFE and nursing practice are discussed.     

Webster‐Stratton Incredible Years Basic Parent Programme (IY) in child care placements: residential staff carers' satisfaction results

The aim of the present study was to investigate residential child care staff satisfaction with their involvement in the Webster‐Stratton Incredible Years Basic Parent Programme (IY). In an exploratory, not randomized study, 27 professionals from two different short‐term Portuguese residential child care centres (IG1, n = 15; IG2; n = 12) completed weekly IY evaluations and an overall satisfaction questionnaire at the end of their participation in the IY intervention. The weekly level of satisfaction was assessed with regard to each of the programme's components (content, DVDs, group leaders, group discussion). At the last session, they filled out a questionnaire aimed to evaluate the levels of satisfaction regarding the programme overall, the teaching format, the group leader(s) and the usefulness of specific educational techniques they learned. Data indicated that residential staff carers were highly satisfied with the weekly sessions and with the overall usefulness of the intervention programme. Results are discussed in terms of implications and future research directions.     

Internal and External Social Capital for Radical Product Innovation: Do They Always Work Well Together?

We examine the role of internal and external relational social capital (SC) as determinants of radical product innovation (RPI). By analysing both sides of SC, we provide interesting insights on their relative influence and their interaction effect on this type of innovation. Besides, traditional assumptions on SC and innovation are questioned. In our empirical study using a sample of 142 manufacturing and service companies we found that, of the two types of SC analysed, internal SC is the most relevant predictor of RPI in relation to either technological or market dimensions. The influence of external SC is not as strong as the internal one. Regarding their interaction effect, external SC reduces the positive effect of internal SC on the market dimension of RPI. Interesting implications arise for practitioners, who should pay special attention to the higher impact of internal SC on RPI and the need to carefully manage the difficulties that emerge when it is combined with external SC.     

Brownian Bridge and Other Path-dependent Gaussian Processes Vectorial Simulation

The iterative simulation of the Brownian bridge is well known. In this article, we present a vectorial simulation alternative based on Gaussian processes for machine learning regression that is suitable for interpreted programming languages implementations. We extend the vectorial simulation of path-dependent trajectories to other Gaussian processes, namely, sequences of Brownian bridges, geometric Brownian motion, fractional Brownian motion, and Ornstein–Ulenbeck mean reversion process.