首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 93 毫秒
1.
教育功能就是教育系统内部各要素之间以及教育系统与其他社会系统之间相互联系和作用的能力,传统的教育功能观将教育功能分为个体发展功能和社会发展功能.本文分析了传统教育功能观带有主观价值判断的倾向,并且忽略了教育系统自身的发展潜能,横向列举教育功能忽略了外部环境教育功能发挥的影响作用.最后指出教育对人的影响作用才是教育最为基本的功能,在此基础上才产生了对社会的作用的衍生功能.  相似文献   

2.
探讨了河钢邯钢CSP连铸机的二级系统升级改造的部分设想及其实践,在对原有二级系统的功能应用分析后,结合原系统在使用过程中出现的问题和与后续信息化、自动化系统的匹配问题,并在考虑连铸工序生产、设备和质量管理对自动化和信息化系统的功能需求基础上,对传统连铸二级系统功能进行了扩展和创新,提出了维修车间功能扩展和关键设备管理等功能,并成功在改造过程中进行了实施,取得了良好效果。  相似文献   

3.
根据深圳华美板材有限公司冷轧机AGC改造项目,简要描述了现代冷轧机AGC系统的组成、系统功能和控制原理。针对原系统在控制精度和生产管理功能上的不足,在冷轧机AGC改造中,全面优化了辊缝控制、厚度监控和加减速段厚度补偿,新增加了流量控制功能、油缸自动调偏功能以及实时生产数据记录、历史曲线查询、生产报表功能、道次轧制质量跟踪等生产管理功能。改造后,本冷轧AGC系统有效地改善了带材生产精度和成品率,提高了产品生产管理和质量管理的能力。  相似文献   

4.
介绍了热轧平整机电控系统的供配电系统、主传动系统、辅助传动系统、基础自动化系统、硬件的组成和软件的功能,重点介绍了电控系统的软件功能,对学习和初步设计平整机电控系统有一定的参考意义。  相似文献   

5.
张峥 《冶金自动化》2001,25(6):47-49
介绍了马钢炼钢厂在线吹氩站自动控制系统的组成结构,并详细阐述了控制系统实现的各种功能,给出了应用软件开发方法,系统运行情况和功能特点。其三电一体系统在功能分配上为分级式层次结构,由过程控制级和基础自动化级组成,提高了系统的控制水平。  相似文献   

6.
申德荣 《黄金学报》2001,3(2):145-148
本文介绍了某一高档住宅园区自动化系统的构成,具有的特点及其实现的功能,系统由电话系统、园区计算机网络系统和宽带ADSL接入系统三部分组,成实现了园区的内话音,数据及多媒体等信息传输及宽带接入园区网和INTERNET功能。  相似文献   

7.
本文详细论述了微机配料系统补偿重量的基本原理以及控制系统硬件的组成和软件的主要、辅助功能。系统软件中还介绍了监控程序的其他功能,如制表功能、人机联系功能、设备诊断和自诊断功能等等。另外还介绍了本系统的几种抗干扰措施。  相似文献   

8.
采区生产系统广义模糊可靠性分析   总被引:2,自引:0,他引:2  
应用广义可靠性理论,引进模糊功能状态的概念,考虑系统功能状态的变化和系统各单元的能力利用系数,建立了系统能力有效度计算模型  相似文献   

9.
批评话语分析是通过分析语言的特点来揭示语篇中潜在的语言,权利和意识形态的关系.批评话语分析的理论基础和方法相当一部分吸收了韩礼德的系统功能语法理论.本文主要用系统功能语法三个元功能:概念功能、人际功能、语篇功能来分析广告语篇的特征,从中揭示广告语篇中的语言,权利和意识形态的关系,同时也说明了系统功能语法在话语批评中的实用性.  相似文献   

10.
在研究烧结过程专家系统的结构和特点的基础上,提出了用面向对象的方法来建造烧结过程专家系统骨架,并实现了骨架系统的两大功能:外壳功能和语言功能,系统提供了原型系统的生成平台和用于专家系统开发的类代码。应用该骨架系统,开发了由化学成分控制、烧结过程状态控制、能耗控制、异常诊断四个子系统组成的烧结过程控制专家系统,取得了良好的效果。  相似文献   

11.
12.
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)  相似文献   

13.
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.  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
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.  相似文献   

17.
The constructs of intelligence and ego-resiliency are discussed. The personality implications of "pure intelligence" and "pure ego-resilience" were identified. Intelligence (IQ) was indexed by the Wechsler Adult Intelligence Scale-Revised (WAIS—R) and ego-resiliency by an inventory scale. Residual scores measuring "pure intelligence" and "pure ego-resilience" were correlated with the items of the observer based California Q-sort, used to describe participants. Persons relatively high on ego-resilience tend to be more competent and comfortable in the "fuzzier" interpersonal world; persons defined primarily by raw IQ tend to be effective in the "clearer" world of structured work but tend also to be uneasy with affect and less able to realize satisfying human connections. Gender differences exist in the relations of ego-resilience and intelligence and in their adaptive relevance. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

18.
Investigated the effects of modeling and corrective feedback on the conservation of equalities and inequalities, with items spanning 3 stimulus dimensions (length, number, and 2-dimensional space). Ss were 48 kindergartners (24 boys, 24 girls). Brief observation of a model, briefer correction training (joining positive feedback with verbal rule provision), and the combination of observation and correction were all successful in producing learning and, without further training, transfer and retention of conservation. Unlike the controls (who also never correctly answered any equality items), the trained experimental Ss gave evidence of spontaneously generalizing their new learning to a task that required nonverbal behavior to manifest conservation. (17 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

19.
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。  相似文献   

20.
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,  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号