全文获取类型
收费全文 | 323篇 |
免费 | 4篇 |
国内免费 | 3篇 |
专业分类
电工技术 | 1篇 |
综合类 | 9篇 |
化学工业 | 16篇 |
机械仪表 | 3篇 |
建筑科学 | 40篇 |
能源动力 | 4篇 |
轻工业 | 28篇 |
无线电 | 4篇 |
一般工业技术 | 25篇 |
冶金工业 | 179篇 |
自动化技术 | 21篇 |
出版年
2024年 | 2篇 |
2023年 | 4篇 |
2022年 | 8篇 |
2021年 | 10篇 |
2020年 | 6篇 |
2019年 | 8篇 |
2018年 | 5篇 |
2017年 | 7篇 |
2016年 | 3篇 |
2015年 | 5篇 |
2014年 | 8篇 |
2013年 | 12篇 |
2012年 | 7篇 |
2011年 | 37篇 |
2010年 | 30篇 |
2009年 | 35篇 |
2008年 | 14篇 |
2007年 | 19篇 |
2006年 | 21篇 |
2005年 | 21篇 |
2004年 | 14篇 |
2003年 | 20篇 |
2002年 | 14篇 |
2001年 | 6篇 |
2000年 | 1篇 |
1998年 | 2篇 |
1994年 | 1篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1981年 | 1篇 |
1976年 | 1篇 |
1966年 | 1篇 |
1963年 | 1篇 |
1962年 | 1篇 |
1957年 | 1篇 |
1956年 | 1篇 |
排序方式: 共有330条查询结果,搜索用时 0 毫秒
71.
归结了城市边缘大型居住区在飞速扩张的过程中存在的问题及其解决策略,同时结合大连新型集团龙畔金泉居住区二期、三期规划设计,对城市边缘大型居住区规划设计中生活空间营造以及生活模式引导进行了研究和探索。 相似文献
72.
Banu Tomruk 《Architectural Design》2010,80(1):46-51
Banu Tomruk investigates the post-1980s transformation of the built environment of medium-scale Anatolian cities. She examines the subject through a conceptual and physical framework that places as much emphasis on populist rhetoric – ‘identity crisis’, ‘historicisation’, ‘the making of a tourist city’ – as on the built structures themselves and their realisation as standardised apartment blocks and gated communities. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
73.
Serena Dato Paolina Crocco Patrizia D’Aquila Francesco de Rango Dina Bellizzi Giuseppina Rose Giuseppe Passarino 《International journal of molecular sciences》2013,14(8):16443-16472
Oxidative stress is both the cause and consequence of impaired functional homeostasis characterizing human aging. The worsening efficiency of stress response with age represents a health risk and leads to the onset and accrual of major age-related diseases. In contrast, centenarians seem to have evolved conservative stress response mechanisms, probably derived from a combination of a diet rich in natural antioxidants, an active lifestyle and a favorable genetic background, particularly rich in genetic variants able to counteract the stress overload at the level of both nuclear and mitochondrial DNA. The integration of these factors could allow centenarians to maintain moderate levels of free radicals that exert beneficial signaling and modulator effects on cellular metabolism. Considering the hot debate on the efficacy of antioxidant supplementation in promoting healthy aging, in this review we gathered the existing information regarding genetic variability and lifestyle factors which potentially modulate the stress response at old age. Evidence reported here suggests that the integration of lifestyle factors (moderate physical activity and healthy nutrition) and genetic background could shift the balance in favor of the antioxidant cellular machinery by activating appropriate defense mechanisms in response to exceeding external and internal stress levels, and thus possibly achieving the prospect of living a longer life. 相似文献
74.
为了实现从大量的医学数据中获取有效的知识并形成规则和做出正确的推理,提出了一种基于粗糙集和距离型模糊推理进行生活方式病检查的模型.采用改进的依赖度属性约简算法研究属性约简,去掉不必要属性,减小规则库规模,提高粗糙集知识发现方法在医疗健康数据上的分类效率和准确性.采用距离型模糊推理方法匹配知识库中已有规则,计算规则和给定事实的距离进行推理检查,构建距离型模糊推理的检查系统.通过实验数据描述了知识库的构建过程,并验证了模型的有效性. 相似文献
75.
朱利兰 《徐州建筑职业技术学院学报》2009,9(3):91-93
大学生体育社团作为一种新型的课余体育组织形式,在促进校园文化发展方面发挥着重要作用.通过问卷调查,对学生体育社团会员参与社团活动情况进行分析并对发现的问题提出了相关建议. 相似文献
76.
Lisspers Jan; Sundin ?rjan; ?hman Arne; Hofman-Bang Claes; Rydén Lars; Nygren ?ke 《Canadian Metallurgical Quarterly》2005,24(1):41
This study evaluated the effects of a behaviorally oriented cardiac rehabilitation and secondary prevention program on lifestyle changes and on coronary recurrence rates. Patients recently treated with percutaneous coronary intervention (PCI) were randomized to an intervention with an aggressive focus on lifestyle changes (smoking, diet, exercise, and stress; n = 46) or to a standard-care control group (n = 42). Results showed that the intervention group had significantly larger overall lifestyle changes than the control group after 12, 24, 36, and 60 months. The intervention group had significantly lower rates of all coronary events (acute myocardial infarction, coronary artery bypass graft, PCI, cardiac death; 30.4% vs. 53.7%), and of cardiovascular mortality (2.2% vs. 14.6%). The need for future large-scale and long-term evaluations of lifestyle-oriented secondary prevention interventions of this kind is emphasized. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
77.
Babcock Julia C.; Green Charles E.; Webb Sarah A.; Yerington Timothy P. 《Canadian Metallurgical Quarterly》2005,114(3):444
On the basis of studies finding heart rate deceleration among severely violent (SV) batterers (J. M. Gottman et al., 1995) and unsuccessful psychopaths (S. S. Ishikawa, A. Raine, T. Lencz, S. Bihrle, & L. Lacasse, 2001), this study compares the physiological reactivity of SV batterers (n = 35) with low-level violent (LLV) batterers (n = 37) and nonviolent men (n = 21) during 2 laboratory tasks. Men's heart rate and skin conductance level were recorded during baseline, a conflict discussion, and a standardized anger induction. Results suggest that autonomic hyporeactivity is a risk marker for antisocial features among SV men, whereas autonomic hyperreactivity is a risk marker among LLV men. Psychophysiological responding appears to be a stronger correlate of general antisocial behavior than of intimate partner abuse. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
78.
The authors examined the relationship between personality disorders, as measured by a self-report screening instrument, and psychopathy as measured by the Psychopathy Checklist (PCL-R; R. D. Hare, 1991) in female inmates. Participants included 136 women from a maximum security state prison. There was a positive relationship between the Antisocial Personality Disorder (APD) scale, which measures conduct disorder before age 15, and the Factor 2 scale of the PCL-R; no other significant relationships with other personality scales were obtained, and there were no evident relationships between any of the personality scales and the Factor 1 scale of the PCL-R. A discriminant function analysis and follow-up receiver operating characteristics analysis indicated that the use of a criterion of 3 endorsed conduct disorder items from the 15-item APD scale was sufficient to correctly identify 71.9% of the women who had been identified as meeting the criterion for psychopathy using the PCL-R interview. However, the scale evidenced poor prediction of nonpsychopaths (specificity = 52.8%). Results indicate the value of using the self-report of conduct disorder items as part of a screening procedure in concert with other measures to select inmates who require further assessment of psychopathy. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
79.
Nigg Joel T.; Glass Jennifer M.; Wong Maria M.; Poon Edwin; Jester Jennifer M.; Fitzgerald Hiram E.; Puttler Leon I.; Adams Kenneth M.; Zucker Robert A. 《Canadian Metallurgical Quarterly》2004,113(2):302
One component of individual risk for alcoholism may involve cognitive vulnerabilities prodromal to alcoholism onset. This prospective study of 198 boys followed between 3 and 14 years of age evaluated neurocognitive functioning across three groups who varied in familial risk for future alcoholism. Measures of intelligence, reward-response, and a battery of neuropsychological executive and cognitive inhibitory measures were used. Executive functioning weaknesses were greater in families with alcoholism but no antisocial comorbidity. IQ and reward-response weaknesses were associated with familial antisocial alcoholism. Executive function effects were clearest for response inhibition, response speed, and symbol-digit modalities. Results suggest that executive deficits are not part of the highest risk, antisocial pathway to alcoholism but that some executive function weaknesses may contribute to a secondary risk pathway. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
80.
快节奏的今日社会中日渐产生与成长着行色各异的文化群体,而他们各异的生活方式注定了他们对设计风格化的要求,设计也在此过程中更富于人性化,源于生活与文化的设计更对文化群体、生活风貌的构建起到了不可忽略的作用。 相似文献