计算机任务驱动教学法的应用

以计算机多媒体技术和网络通讯技术为代表的现代信息技术正在飞速发展。信息化浪潮对当今世界的政治、经济和文化等多个方面都产生了巨大的影响，信息化改变着我们的生活。改变着方方面面。如今世界各国对教育的信息化建设都十分重视。其中加强中小学的信息化建设也成为各国的共识。各国都在采取有效措施．加强本国的中小学教育信息化建设，我国政府也在全国中小学基本普及信息技术教育。全面实施“校校通”工程．以信息化带动教育的现代化．努力实现基础教育的跨越式发展。许多学校也建设了良好的计算机教室。建立了校园网。不过有了良好的硬件。如何     

发展现代电炉炼钢促进我国钢铁工业可持续发展

一、提高电炉钢比例 当今世界钢铁生产主要有两种流程,一是以铁矿石为主要原料的高炉转炉长流程,二是以废钢为主要原料的电炉短流程。2006年,世界转炉钢产量8．14亿吨,占世界总钢产量的65．5％,电炉钢产量3．97亿吨,占世界总钢产量的32．0％;除中国以外的其他国家统计,电炉钢平均比例为42％,其中意大利电炉钢比例达到62％。     

世界发达国家发展钢铁工业中值得借鉴的经验

本文以大量国内外文献为依据。概述了世界工业发达国家老厂改造和新厂建设的情况，祥 述其以市场为导向，在引进消化最新技术、完善质量标准系列、建设信息网络等方面的经验。在此基础上，列举了我国在钢铁产品品种结构、产品质量以及工艺装备上与世界先进国家的主要差距，并结合企业的实际，提出了今后对策思路。     

“十一五”中国电力装机容量年增约1亿kW

12月7日国家电监会新闻发言人谭荣尧说,“十一五”期间,中国以每年新增约1亿kW发电装机的速度加快电力建设,基本解决了长期困扰中国经济社会发展的“电荒”问题,到今年底电力装机将达9．5亿kW左右。谭荣尧表示,目前中国电网规模已经超过美国跃居世界第一位,发电装机容量继续位列世界第二。     

铜陵有色金属（集团）

铜陵有色金属（集团）公司投产于1952年6月．是新中国最早建设起来的铜工业基地之一。经过半个世纪的建设．已发展成为以铜金属采、选、炼、加工为主．集经营贸易、科研设计、机械制造、建筑安装、井巷施工、旅游服务为一体的特大型联合企业集团。公司现为全国300家重点扶持和安徽省重点培育的大型企业集团之一。自1998年以来．公司主要产品阴极铜产量连续5年位居全国行业首位；2004年．阴极铜产量达到37．11万t．位居世界大型铜精炼企业第13位；2005年按销售收入排序．名列中国企业500强第174位、中国制造业500强第79位和安徽省大型工业企业第4位。     

建设世界现代田园城市理论综述

为解决城市化发展带来的城市问题,成都市创造性提出了以"自然之美、社会公正、城乡一体"为核心理念建设"世界现代田园城市".本综述对与世界现代田园城市有相关性的田团城市、生态城市、可持续发展城市等理论及相关文献进行梳理,总结了相关理论在世界田因城市建设中有价值的理论依据,并提出了世界现代田因城市的建设也应以人口、社会、经济、自然、资源五大要素为核心,应综合考虑自然与社会.城市与乡村在社会活动中存在的差异提出科学的规划理念,关注城乡空间、功能、经济的平衡等措施.     

"钢结构设计"精品课程建设与实践

“钢结构设计”是土木工程专业的一门主干专业技术课程．根据建筑钢结构技术领域的发展和需求，以教育思想和观念转变为前提，课程体系和内容改革为重点，以精品课程建设为目标．实施了“钢结构设计”课程的精品化建设。在培养学生的科技创新和工程实践能力方面成效显著．形成了结合学科特点、具有鲜明实践特点的课程体系。     

世界铁矿石供需现状

一、世界铁矿石的生产、消费现状１．世界铁矿石的生产现状世界铁矿石资源非常丰富,据１９９８年美国地质调查局资料报道,世界铁矿石储量为１６７０亿吨（铁含量为６８０亿吨）;铁矿石储量基础为２７２０亿吨（铁含量为１１２０亿吨）,俄罗斯以３４３亿吨铁矿石储量位居榜首。详细情况见表１。目前,世界铁矿石的生产主要集中在南美（巴西、委内瑞拉、智利、秘鲁等）、澳大利亚、加拿大、瑞典、南非、美国、印度、俄罗斯、乌克兰和毛里塔尼亚。１９９８年世界铁矿石产量为９．０４亿吨（其中中国的铁矿石产量按６１．５％的品位计算）,…     

国内成立第一家钛专业公司

攀枝花是国内乃至世界的钒钛专业基地．为了大力发展钛工业，攀钢专门成立了钛的专业公司——钛业公司．该公司目前拥有职工2000余人，下设边钛厂、钛白粉厂和铁基制品厂．目前该公司正拟建设10万t／a规模的高钛湾厂，规划建设4万地规模的硫酸法钛白厂和5000t／a规模的海绵钛厂．该公司希望将来能建成国内乃至世界的钛基地．可通过下列同址访问：http：／／www．pzhsteel．com．cn和http：／／tiv．yeah．net．国内成立第一家钛专业公司     

世界钢铁工业投资、生产及竞争力分析

一、目前世界原钢产能增长速度大为放慢。旧生产设备正在被废除在2009年5月27日法国斯特拉斯堡钢铁日活动中，一些专家预测世界原钢产量到2015年将增加50％，2008年世界原钢产量为13亿吨，即到2015年原钢产量将达到19亿吨左右。然而，WSD却提出不同观点，认为世界用于新增产钢能力投资几乎中止．只有建设时间为1年至2年的新增产钢能力工程项目接近完工。     

Voices of fear and anxiety and sadness and depression: The effects of speech rate and loudness on fear and anxiety and sadness and depression.

Two studies investigated the role of expressive vocal behavior (specifically, speech rate and loudness) in fear and anxiety and in sadness and depression. In the 1st study, participants spoke about personally experienced fear and anxiety-arousing and neutral events using 3 different voice styles: fast and loud, normal, and slow and soft. In the 2nd study, participants spoke about personally experienced sad or depressing and neutral events using the same 3 voice styles. In both studies, the participants' highest levels of subjective affective and cardiovascular (CV) arousal occurred when they spoke about the emotional events in a mood-congruent voice style: fast and loud in the case of fear and anxiety, and slow and soft in the case of sadness or depression. Mood-incongruent voice styles canceled the heightened levels of CV arousal normally associated with these negative emotions. The voice-style manipulation had no significant effect on the participants' levels of CV arousal during the neutral discussions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Synthesis and analysis of mixed chlorinated-fluorinated dibenzo-p-dioxins and dibenzofurans and assessment of formation and occurrence of the fluorinated and chlorinated-fluorinated dibenzo-p-dioxins and dibenzofurans

Despite the use of multimodal therapy, higher-grade glioma is still uniformly fatal in the adult population. There is a considerable difference between the length of survival in each given patient, even within the same tumor type and malignancy grade group, suggesting that there are factors that might differentially influence outcome. To identify such factors, 107 patients with anaplastic or malignant glioma were retrospectively investigated. Clinical parameters and paraclinical data on the p53, mdm2, and EGFR genes at the DNA or protein level were evaluated by univariate analysis and Cox proportional hazards regression modeling. Kaplan-Meier survival estimation demonstrated that immunohistochemical positivity for mdm2 protein in patients with anaplastic astrocytoma or with glioblastoma multiforme was associated with a shorter survival time (p = 0.02). P53 gene mutations and immunopositivity for the epidermal growth factor receptor (EGFR) protein were not significantly related to poor prognosis. The Cox proportional hazards model revealed immunohistochemical positivity for p53, mdm2, or for both of them, the presence of postoperative irradiation, and the extent of surgical resection of tumor to be variables significantly associated with prolonged survival. EGFR overexpression, age over 60 years, and Karnofsky performance score below 40 points did not significantly shorten survival time. In conclusion, the present study identified immunohistochemically detected mdm2-protein overexpression as a statistically significant negative prognostic parameter in patients bearing anaplastic or malignant glioma. Association analysis of variables revealed a possible correlation between mdm2 and p53, which is also consistent with the biological interaction mode of both proteins in vivo.     

Sexuality and aging--usual and successful

BACKGROUND: As aging research increasingly reflects an effort to dissociate true time-driven changes from those that can be improved, sexuality in later life remains largely unexplored. Several problems are evident. There is a lack of normative data, a lack of a conceptual framework relating to the biology, psychology, and sociology of sex, and an attitudinal resistance that obscures the entire topic. METHODS: We conducted a three-part instructional series on major topics involved with sexuality and aging. We surveyed our group of attendees (n 158, average age 68 for males, 65 for females) before and after the series. RESULTS: A remarkably robust sex life was evidenced by both the men and the women, even until advanced old age. Yet, a substantially decreased involvement was reported from 10 years earlier. Despite current activities, people of both sexes wished they were participating even more than they currently were. Impotency was identified as the major negative feature for the men; relationship problems were for the women. A questionnaire 6 months after the series reported improved sexual attitudes, but no change in sexual activities from the earlier survey. CONCLUSION: Sexuality is a major quality-of-life issue which persists into old age. Our study showed that the usual sexual practices reported by our group were not considered by them to be ideal. The intervention of this instructional series provided improved sexual attitudes but not performance. Additional studies are encouraged.     

Spondylolysis and spondylolisthesis and sports

Spondylolysis and spondylolisthesis occur predominantly in the lower lumbar spine. Besides congenital defects such as predisposition of spondylolysis the correlation between competitive sports activities and an increased incidence of spondylolysis is proved. In early stages, complete healing can be achieved by conservative treatment (abstinence from sports activities for 3 months, orthesis). Persistence of pain, neurologic symptoms and progression of vertebral slipping are indications for operative treatment (reconstruction of the isthmus, dorso-ventral spondylodesis). The exercise tolerance depends on the extent of instability, progression of vertebral slipping and clinical symptoms. The limits of exercise tolerance vary among the individual athletes and require the decision of the physician. Backstroke swimming, abdominal and back muscle strengthening exercises, and types of sport involving smooth movements are advisable. Sports education in school is possible without restriction in patients with stable spondylolysis and in those with spondylolisthesis without unfavourable concomitant factors.     

Larks and owls and health, wealth, and wisdom

OBJECTIVE: To test the validity of Benjamin Franklin's maxim "early to bed and early to rise makes a man healthy, wealthy, and wise." DESIGN: Cross sectional analysis of sleeping patterns in a nationally representative group of elderly people, and longitudinal investigation of mortality. SETTING: Eight areas in Britain (five in England, two in Scotland, and one in Wales). SUBJECTS: 1229 men and women aged 65 and over who in 1973-4 had taken part in a survey funded by the Department of Health and Social Security and for whom data on sleeping patterns, health, socioeconomic circumstances, and cognitive function had been recorded. MAIN OUTCOME MEASURES: Self reported income, access to a car, standard of accommodation, performance on a test of cognitive function, state of health and mortality during 23 years of follow up. RESULTS: 356 people (29%) were defined as larks (to bed before 11 pm and up before 8 am) and 318 (26%) were defined as owls (to bed at or after 11 pm and up at or after 8 am). There was no indication that larks were richer than those with other sleeping patterns. On the contrary, owls had the largest mean income and were more likely to have access to a car. There was also no evidence that larks were superior to those with other sleeping patterns with regard to their cognitive performance or their state of health. Both larks and owls had a slightly reduced risk of death compared with the rest of the study sample, but this was accounted for by the fact that they spent less time in bed at night. In the study sample as a whole, longer periods of time in bed were associated with increased mortality. After adjustment for age, sex, the presence of illness, and other risk factors, people who spent 12 or more hours in bed had a relative risk of death of 1.7 (1.2 to 2.5) compared with those who were in bed for 9 hours. The lowest risk occurred in people who spent 8 hours in bed (adjusted relative risk 0.8; 0.7 to 1.0). CONCLUSION: These findings do not support Franklin's claim. A "late to bed and late to rise" lifestyle does not seem to lead to socioeconomic, cognitive, or health disadvantage, but a longer time spent in bed may be associated with increased mortality.     

Craniometaphyseal and craniodiaphyseal dysplasia, head and neck manifestations and management

Mechanical allodynia (MA) following hand injury is a well-documented clinical problem. The purpose of this pilot study was to examine the relationship between hand MA and the upper limb tension test (ULTT). The ULTT mechanically stresses the neural structures from the C5/6/7 neural foramina to the median nerve distally. This study examined 29 subjects with unilateral hand MA before and after a 2-week neural self-mobilization programme. There was a significant difference between the subjects' affected and unaffected sides when tested using the ULTT, both in reproduction of symptoms and in reduced range of motion of the ULTT. Following the self-mobilization program, there was an improvement in the range of the ULTT, and subjects reported a reduction in their symptoms. Complete recovery was not obtained in all cases. The results of this study suggest that the ULTT is a useful tool both in assessment and treatment of subjects with hand MA.     

深云立交桥梁检测及加固改造

根据深云立交桥梁的检测结果，对该桥目前的整体状况、工作状态，及其使用情况做出综合评价，对桥的病害原因进行了分析，并提出合理的加固方案。     

关于摩尔浓度及其与硬度转换关系问题的讨论

众所周知，国际单位制物质的量采用摩尔(mol)表示，近几年出版的给排水专业书籍，为了与国际单位制接轨，逐渐将摩尔的使用频率不断提高，被给排水技术人员广泛应用的新版给排水设计手册，将表示物质浓度的单位“当量／升”或“毫克当量／升”．改为mol／l或mmol／l，虽然编者对其基本单元定义作了说明，但在实际运用上仍会出现误解，     

《儿子与情人》的语码转换与男女二元对立

劳伦斯小说《儿子与情人》一个鲜明的语言特色就是标准英语和当地方言频繁的语码转换。莫瑞尔用方言来对抗妻子,而妻子坚持用标准英语,偶尔也用方言来讽刺、挖苦丈夫。语码转换反映了劳伦斯男女二元对立的哲学思想。