基于宏程序的椭圆轮廓的数控车加工

宏程序在数控编程中有着广泛的应用。文章结合两种椭圆曲线宏程序编程实例,介绍了宏程序在非圆曲线中的编制方法和技巧,分析表明:宏程序数控编程具有编程快捷和程序短小精悍的显著特点,尤其适用于一些含非圆曲线零件的数控编程加工。     

挤扩支盘灌注桩技术及其应用研究

挤扩支盘灌注桩是最新的一种土建施工方法,为了能够很好地推广应用此方法,文章首先对分析了挤扩支盘灌注桩的结构模型和其形成机理,其次对其桩身的受力原理进行了详细分析,然后结合施工案例得出了挤扩支盘灌注桩在施工过程中的注意要点和挤扩支盘灌注桩的优点。     

地下室墙板环境温度应力有限元分析

建立地下室墙板有限元模型,并且地下室外墙四周和底板底部受到土壤的弹性约束,研究了在气候变化下地下室外墙和底板引起的温度应力。通过有限元分析,绘制出气候变化过程中温度应力的分布情况,以及定性的总结出温度应力随墙体长度和底板厚度变化的规律。     

中国和印度规范荷载组合的对比

改革开放三十年来,中国经济发生翻天覆地的变化,各行各业也得到了蓬勃发展,工程建设行业纷纷走向国际市场。印度是一个巨大的市场,基础设施的建设存在很大发展空间。在国内各大公司进军印度市场的设计市场时,不免会遇到印度规范的问题。本人参与多年的印度电厂的设计工作,对印度结构规范有了一些了解,本文就中印两国规范的荷载组合进行对比分析,希望对大家在进军印度设计市场时有点帮助。     

商业银行信用风险与宏观经济——基于压力测试的研究

本文采用压力测试框架,研究了宏观经济波动对商业银行信用风险的影响。文章以不良贷款率度量信用风险,以名义GDP增长率、广义货币供应量（M2）增速、居民消费价格指数（CPI）以及房地产销售价格指数作为宏观经济变量,建立了合适的宏观压力测试模型。在GDP增速放缓、CPI上升、M2增速下降的压力情景下,预测了2011年第一季度到第四季度的不良贷款率的变化路径。实证结果表明在压力情景下商业银行的不良贷款率将会显著上升。     

宏观统计数据质量规范研究

根据国内外宏观统计数据质量规范演变的历程,在界定宏观统计数据质量新内涵的基础上,依据国际货币基金组织评价数据质量的规范,本文对我国宏观数据质量的规范进行了实证研究。我国宏观数据质量在金融统计数据、社会人口统计数据上与国际货币基金组织制定的数据公布通用系统(GDDS)一致,而财政统计数据与对外经济数据与GDDS尚存在差距;我国数据公布系统在金融统计和人口统计上与GDDS一致,在对外统计与财政统计上与GDDS存在一定差异。     

Investigating the immediate and long-term effects of job stressors on frontline service employees

Two studies investigate the immediate and long-term effects of job stressors on frontline service employees (FSEs). Using cognitive appraisal theory, we develop and test a conceptual model of two job stressors (crowding and emotional labor) that affect coping strategies and job outcomes. Study 1, which is a field experiment, investigates the immediate effects of crowding in a single firm. Study 2 extends the findings of Study 1 and investigates the long-term effects of emotional labor and crowding on FSEs across multiple firms. The results show that crowding has a negative impact on coping strategies and job-related outcomes. In addition, emotional labor can lead to long-term negative outcomes, such as emotional exhaustion and decreased job retention, for some FSEs. Consequently, service organizations should consider strategies or tactics that prevent high levels of customer crowding and help FSEs deal with emotional labor.     

浅析宏观调控下地产金融的新渠道

纷至沓来的地产融资的新渠道,犹如一场变革前奏,正在激荡着国内地产金融模式的发展之路。在宏观调控下,银行贷款和上市融资这两种主要融资渠道的受制,房企如何解决资金链的问题,未雨绸缪积极开拓多种融资方式、保持领先的市场竞争力,成为房企亟待解决的问题,同时也是金融学术界研究的焦点。本文首先从地产金融的历史沿革展开,通过分析宏观调控政策下地产金融的现状入手,进一步探讨宏观调控对地产融资渠道的影响,最后研究和解决房企目前存在的融资难题,开拓多元化的融资新渠道。     

Patient- and clinician-reported satisfaction with pharmacological stress agents for single photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI)

Abstract

Objective:

The objective of this study was to compare clinician and patient measures of satisfaction with two pharmacological stress agents (PSA), regadenoson and dipyridamole, used in Single Photon Emission Computed Tomography (SPECT) Myocardial Perfusion Imaging (MPI).

Methods:

This observational study included patients who had undergone SPECT MPI with regadenoson or dipyridamole, as well as the clinician/clinical technologist who performed the test. Mean scores for individual item and domain scores of the main outcome measures were computed as well as the effect sizes (ES) of the mean difference in scores between treatment groups. Statistical significance of the mean item and domain score differences were assessed via Mann-Whitney tests.

Main outcomes measures:

Two self-report questionnaires which had beeb previously developed and validated: Patient Satisfaction/Preference Questionnaire (PSPQ) and Clinician Satisfaction/Preference Questionnaire (CSPQ).

Results:

A total of 87 patients (68 received regadenoson, 19 received dipyridamole) and nine clinicians/clinical technologists took part in the study. Patients had a mean age of 66.8?±?12.2 years, and 56.3% were male. Compared to dipyridamole, use of regadenoson was associated with greater clinician satisfaction on all items and domains of the CSPQ (p?<?0.001 for all comparisons). Among patients, regadenoson was associated with less bother and greater satisfaction than dipyridamole for all items on the PSPQ. These patients reported less stinging at the injection site (ES?=??0.66) and less nervousness during injection (ES?=??0.60). The PSPQ found that regadenoson patients were more satisfied with their PSA than dipyridamole patients in all areas.

Limitations:

This study utilized a relatively small sample size of dipyridamole patients and lacked an adenosine group. A broader sampling of professionals would also help demonstrate generalizability.

Conclusion:

Both patients and clinicians reported higher satisfaction with regadenoson compared to dipyridamole for SPECT-MPI. Clinicians were particularly satisfied with the preparation and administration aspects of the drug, while patients rated it highly on convenience and reduced incidence of side-effects.     

大学生足球裁判员心理压力成因及对策研究

大学生初步担任足球裁判员,面临较大的心理压力,这种心理压力产生的外在因素有来自比赛球员、教练员、观众、天气状况、场地等因素的压力;内在因素有业务水平、体能、职业道德、思想动机气质与性格等因素的压力.过大的心理压力不得于大学生做好足球执法工作,就当通过提高理论水平、实践能力、心理素质和身体素质,以消除大学生足球裁判员的心...