IPv6协议对移动性的支持

网络技术和移动技术是目前的两大通信技术。随着网络技术和便携式终端的迅速发展,在网络中实现对移动性的支持变得越来越重要。IPv6作为下一代互联网协议,是针对IPv4现在面临的问题提出的,对移动性的支持是IPv6的主要新特性之一。文中对协议IPv4和IPv6进行比较,阐述了IPv6对移动性的支持,分析了它的优点、工作原理和实现的关键技术。并以此说明IPv6能够使用户在移动状态下以多种接入方式享受移动服务,它的丰富的功能为移动性的解决方案提供了诸多方便。     

21世纪中国集约持续农业的理论发展与现实抉择的分析

依据人口众多、资源短缺、经济与技术相对落后的基本国情，在持续农业与农村发展的宏观战略指导下，逐渐发展农业集约化、实现农业现代化、建立农业产业化，形成２１世纪具有中国特色的集约持续农业。将农业集约化、现代化、产业化和持续化科学地组装起来，使中国农业沿着集约化→现代化→产业化→持续化方向发展。     

难处理硫化矿生物湿法冶金研究进展Ⅱ氧化机制、强化细菌浸出与生物反应器设计

着重评述了难处理硫化矿的矿物结构、性质及表面特征与各种电化学因素、细菌氧化机制与难处理硫化矿细菌强化浸出、浸矿基因工程菌以及生物反应器等方面的研究进展。指出缩短生物氧化周期长是细菌强化氧化研究的核心；将细菌繁殖和矿物氧化两个过程分开进行的“分离器-发生器”设备设计，是一值得推广的高效生物反应器。     

Managed Care: Implications for School Psychology. Comment.

Comments on the article by Sanchez and Turner (see record 2003-03405-005) examining the implications for practice and training in psychology in the era of managed care. The current author states that Sanchez and Turner should be commended. Their article amplifies and clarifies critical issues psychologists must consider while practicing within an era increasingly shaped by health insurance policies and practices. Nevertheless, the author feels that several intriguing facets of managed care were not highlighted. Discussion focuses on the impact that reimbursement and managed care is having on school (and clinical) psychologists. The author points out that it is unknown to what extent managed care may (and has) altered psychological services delivered by school psychologists. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effectiveness of Cognitive-Behavioral Treatment for Panic Disorder Versus Treatment as Usual in a Managed Care Setting.

Eighty clients enrolled in a managed care health plan who identified panic disorder as their primary presenting problem were randomly assigned to treatment by a therapist recently trained in a manual-based empirically supported psychotherapy (M. G. Craske, E. Meadows, & D. H. Barlow, 1994) or a therapist conducting treatment as usual (TAU). Participants in both conditions showed significant change from pre- to posttreatment on a number of measures. Those receiving panic control therapy (PCT) showed greater levels of change than those receiving TAU. Among treatment completers, an average of 42.9% of those in PCT and 18.8% in TAU achieved clinically significant change across measures. The results are discussed with reference to the dissemination of PCT and other evidence-based psychotherapies to clinical practice settings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The Effectiveness of Telephone-Based Continuing Care in the Clinical Management of Alcohol and Cocaine Use Disorders: 12-Month Outcomes.

This study of continuing care for substance dependent patients compared a telephone-based monitoring and brief counseling intervention (TEL) with 2 face-to-face interventions, relapse prevention (RP) and standard 12-step group counseling (STND). The participants were graduates of intensive outpatient programs who had current dependence on alcohol and/or cocaine. Self-report, collateral, and biological measures of alcohol and cocaine use were obtained over a 12-month follow-up. The treatment groups did not differ on abstinence-related outcomes in the complete sample (N = 359) or on cocaine use outcomes in participants with cocaine dependence (n = 268). However, in participants with alcohol dependence only (n = 91), TEL produced better alcohol use outcomes than STND on all measures examined and better outcomes than RP on some of the measures. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Quantification and source characterization of volatile organic compounds from exercising and application of chlorine-based cleaning products in a university athletic center

Humans spend approximately 90% of their time indoors, impacting their own air quality through occupancy and activities. Human VOC emissions indoors from exercise are still relatively uncertain, and questions remain about emissions from chlorine-based cleaners. To investigate these and other issues, the ATHLETic center study of Indoor Chemistry (ATHLETIC) campaign was conducted in the weight room of the Dal Ward Athletic Center at the University of Colorado Boulder. Using a Vocus Proton-Transfer-Reaction Time-of-Flight Mass Spectrometer (Vocus PTR-TOF), an Aerodyne Gas Chromatograph (GC), an Iodide-Chemical Ionization Time-of-Flight Mass Spectrometer (I-CIMS), and Picarro cavity ringdown spectrometers, we alternated measurements between the weight room and supply air, allowing for determination of VOC, NH₃, H₂O, and CO₂ emission rates per person (emission factors). Human-derived emission factors were higher than previous studies of measuring indoor air quality in rooms with individuals at rest and correlated with increased CO₂ emission factors. Emission factors from personal care products (PCPs) were consistent with previous studies and typically decreased throughout the day. In addition, N-chloraldimines were observed in the gas phase after the exercise equipment was cleaned with a dichlor solution. The chloraldimines likely originated from reactions of free amino acids with HOCl on gym surfaces.     

Work-related musculoskeletal disorders in home care nurses: Study of the main risk factors

BackgroundNurses are a risk group for work-related musculoskeletal disorders (WMSDs). Several studies reveal that nurses have high prevalence rates of injuries and symptoms related to WMSDs. However, many of these studies focus mostly on hospital nurses. Worldwide, few studies include home care nurses.ObjectiveThis work aimed to identify the body region most affected by musculoskeletal complaints in home care nursing, and subsequently develop a statistical model, that includes the main risk factors, to predict the risk of having musculoskeletal complaints in the identified region.MethodsThe research method was based on the Standardised Nordic Questionnaire applied to home care nurses working at Health Centres of northern Portugal. Univariate and multivariate models of logistic regression were used to meet the goals of this work.ResultsHome care nurses have a three times greater chance of having lumbar complaints than their counterparts working only at Health Centres (OR = 3.19 (p < 0.05), with a 95% confidence interval [1.256; 8.076]). A statistical model with seven variables (forearm posture; static postures; arm posture; arm supported; bed height; job satisfaction; assistive devices) was obtained to predict lumbar complaints.ConclusionsThe lumbar region was identified as the most affected by musculoskeletal complaints. These complaints were associated with seven factors.     

基于B/S模式的孕妇儿童体检系统的设计与实现

为了改善孕妇、儿童体检流程的繁重手工管理,提高保健质量和体检效率,同时实现系统在妇幼保健等医疗单位更好地共享。参照《国家基本公共卫生服务规范(2011年)》提出基于B/S模式的孕妇儿童体检系统。介绍系统的总体结构,开发环境、数据库及功能模块设计,并以医生平台为例详细说明儿童体检模块的具体实现过程。系统基本上实现了妇幼保健机构孕妇儿童体检信息及工作考核等的无纸化、规范化和高效化管理,具有较好的实用价值。     

Work organization and Low back pain in nursing personnel

Nursing personnel are at a high risk from occupational low back injury. Work organization has been suggested as one factor playing a part in the aetiology of occupational low back pain. Baseline data for a prospective epidemiology study were gathered by means of a questionnaire. One part of the questionnaire elicited characteristics of work organization, perceived autonomy, the relationship with head nurse and satisfaction in the relationship with co-workers. Information on history of musculoskeletal problems, reported frequency of lifting and personal characteristics was also gathered. Of 787 nursing staff at two acute care hospitals, 154 (19-6%) reported troublesome low back pain occurring within the previous 6 months. From univariate analyses, such characteristics of work organization as shift, type of schedule and primary versus functional nursing were not associated with low back pain. The relationship with head nurse and perceived autonomy of the job also were not related to recent back pain. Recent low back pain was significantly associated with younger age, the job category ‘registered nurse’ and greater satisfaction in relationships with co-workers. These associations were confirmed in multivariate analysis. None of the work organization factors examined, with the exception of satisfaction with co-workers, were associated with back pain in this study. Moreover, the positive association of satisfaction with coworkers suggests that interventions to improve working relationships may not be helpful in prevention programmes. To some extent, these results are susceptible to biases resulting from selective attrition from nursing and selective participation in the study.