基于Panzar-Rosse模型的中国银行业市场结构与竞争的实证检验

文章基于Panzar-Rosse模型研究了2000年到2007年之间中国金融业中银行市场结构和竞争状态,利用H统计值法,测定H值在0.147 491～0.895 820之内,研究表明中国的银行业仍处于垄断竞争状态,并且从垄断过渡到适度竞争阶段,银行业需要更多的竞争政策,以确保在中国金融市场的适度竞争并促进其发展.     

大间距无底柱分段崩落采矿法的研究和应用

大间距采矿是国家"十五"攻关课题"大间距集中化无底柱采矿新工艺研究"的核心内容.文章指出了传统理论的不足,提出了新的理论和数学模型,并已在实验室和矿山工业试验中验证.目前这种新采矿方法已在梅山铁矿全面应用,它将使我国无底柱分段崩落法在结构参数、装备、工艺技术上发生重大变革,并带来巨大的经济效益.     

关于农民培训模式与培训体系的研究综述

总结分析近年来国内外关于农民培训模式与培训体系的理论研究,并进行归纳总结,简要评析,并指出当前需要进一步深入研究的问题,以促进我国农民职业教育的发展和完善.     

铝电解新型电解槽述评

就铝电解用新型电解槽进行了评述,说明新型电解槽的优点和国外关于新型电解槽的研究现状,指出为实现新型电解槽必须研究和解决的课题。     

粤港澳区域科技创新:社会资本视角的研究现状与思考

本文通过对国内外有关研究文献的分析,揭示现有研究存在的不足,指出基于社会资本对粤港澳区域科技创新进行研究的必要性,并指出构建一个科学、严谨、结构合理的关于粤港澳区域社会资本及其与科技创新能力关系的理论分析框架是一项刻不容缓的工作.     

浅谈煤焦油加工发展趋势

本文介绍了国内煤焦油加工现状及存在的问题和国外煤焦油加工工艺概况，指出今后煤焦油加工将向集中化、大型化、效益化及化产品深加工化方向发展。     

中国与欧盟纺织品国际竞争力比较研究

从中国和欧盟纺织品的贸易现状出发,选取纺织品的贸易竞争力指数、出口产品相似度指数和显示性比较优势指数三个指标对中、欧纺织品国际竞争力进行实证研究.研究表明:从整体上看,我国与多数欧盟国家产品竞争程度并不高,但与一些国家产品相似度指数极高,存在较强的竞争性;与欧盟大多数国家相比,中国纺织品具有很强的国际竞争力.     

现代企业信息化建设研究与探讨

企业信息化建设是一项长期、复杂的系统工程,也是企业在全球化和信息化环境下提升企业竞争力的利器和手段.文章在分析国内外企业信息化发展现状的基础上,指出我国企业信息化水平与国外的差距,并对未来一段时间企业信息化发展趋势进行预测,最后提出企业信息化建设的相关措施与建议.     

基于软件方法对电信行业用户流失的实证研究与预测

本文通过对移动通信运营商用户流失相关数据的定量分析,研究导致运营商用户流失的主要因素,并通过软件方法发现具有类似流失前行为的用户,预测流失规模.实证研究结果表明,通信网络质量对于用户流失的影响作用明显,应用软件模型预测用户流失准确率可达83%以上.以上初步研究结论和结果,对于帮助移动通信运营商在日趋激烈的市场竞争环境中及时监测用户流失率和保持竞争优势有重要的理论和实践应用意义.     

铜板带进口替代相关研究分析

尽管我国已经成为铜板带生产大国,但仍不是生产强国.目前我国铜板带行业出现了低端产品过剩,高端产品不足的产品结构性过剩局面,而国外先进企业一直以技术、装备优势和高精尖产品抢占国内高端市场.在出口形势不乐观的背景下,作为既能拉动并满足市场需求又能避开同质化竞争的一种有效手段,进口替代无疑是当前铜板带企业最优的竞争策略之一.通过统计分析进出口数据,简单介绍了我国铜板带行业进出口基本情况,指出了当前进口替代进展缓慢的主要原因,并进一步对铜板带企业加快进口替代进程提出了一些建议,以期能帮助其更好地应对激烈的市场竞争.     

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。