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自从计算机问世以来，人类一直希望能让计算机理解和合成人类的自然语言，即的日常语言，这就是“自然语言理解”，机器翻译、人机对话、语音识别和语音合成、汉字的识别，都是自然语言理解关心的问题。其中最核心的目标是让计算机理解和合成自然语言，即教会计算机听话的说话。如果这一核心目标能够达到，人类将从人工翻译、计算机编程语言的学习等大量工作中解放出来，人类也将从计算机理解和合成自然语言的过程中观察到人类心智活动的机制。不少专家曾经估计，实现计算机理解和合成自然语言不会是一个遥远的路程。 相似文献
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从分析高等职业教育和计算机专业各自的特点入手，总结出在高职院校中发展计算机专业的特点，提出发展高职计算机专业过程中遇到的问题和相应的改革措施和方法。 相似文献
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从创新思维概念入手，阐述了其具体的内涵和特点，并就目前大学生在计算机学习中面临的问题，结合计算机编程类课程的特点，提出了具体措施。通过这些措施，一方面解决当前大学生在学习计算机编程中遇到的问题；另一方面通过这些方法来提高大学生的创新思维能力，为大学生将来就业和工作奠定良好的基础。 相似文献
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随着互联网技术的发展，现代社会对计算机专业人才的要求越来越高，不仅要求学生具有较强的理论知识和操作能力，还要学生具备一定的信息素养和创新能力。文章分析中职计算机专业教学中存在的问题，提出任务驱动法在中职计算机专业教学中的应用策略。 相似文献
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在当前形式下计算机实验教学应如何的改革才能适应现代化的计算机教学的发展，本文针对实验教学中出现的一些弊端，从课程内容、体系结构和教学模式几个方面谈一点自己对计算机教学改革的几点意见和看法： 相似文献
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近年计算机社会培训机构的成功动作，让高校计算机教育的公信力不断打折，导致这一非正常现象的主要因素是高校教育中计算机实践教学的质量。本文就这计算机实践教学的必要性，及其存在的问题，进行了深入的剖析和阐述，且有针对性的提出几点对策。 相似文献
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计算机辅助教学（Copmuter Assisted Instruction）作为一种现代化的教学技术，已越来越受到人们的重视。而且计算机辅助教育已发挥出越来越大的作用，但就当前计算机辅助教学的实际使用和效果上，反映却不尽人意。为此，就当前计算机辅助教学在实际应用中存在的一些问题作初步分析和探索。 相似文献
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Coronary artery disease (CAD) remains the major cause of mortality and morbidity in the entire world population. The conventional risk factors of CAD include hypertension, hyperlipidemia, diabetes mellitus, family history, smoking etc. These factors contribute only 50 % of the total risk of CAD. For providing a complete risk assessment in CAD, it is mandatory to have well-planned clinical, biochemical and genetic studies in patients with CAD and subjects who are at risk of developing CAD. In this review an attempt is made to critically evaluate the conventional and emerging risk factors which predispose the individual to CAD. Specifically, the molecular basis of CAD including high oxidative stress, low antioxidant status and increased DNA damage are covered. A comprehensive and multifactorial approach to the problem is the better way to reduce the morbidity and mortality of the disease. 相似文献
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中小企业深化CAD技术应用的战略构想 总被引：1，自引：0，他引：1
分析了影响中小企业促进ＣＡＤ技术应用的若干症结问题,阐述了深化ＣＡＤ技术应用的主要内容,对中小企业深化ＣＡＤ技术应用的战略构想进行了探讨。 相似文献
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CAT技术是独立于一般CAD、CAM技术发展的，如何有效的实现CAT与CAD的集成是一个重要的问题。传统上我们采用直接对CAT数据源操作的方式来集成CAD／CAT，这存在着软件扩展性和重用性差的缺点。如果在CAD与CAT之间建立一个统一数据接口，则可以避免这些缺陷。本文利用COM技术建立统一数据接口，实现了CAD／CAT新的集成方式。 相似文献
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V. K. Verma V. Ramesh Satyendra Tewari R. K. Gupta Nakul Sinha C. M. Pandey 《Indian journal of clinical biochemistry : IJCB》2005,20(2):68-74
A study has been carried out on 250 CAD patients to see how the serum levels of three antioxidants i.e., Vitamin C, Bilirubin
and Ceruloplasmin are related to the CAD risk factors and characteristics in these patients. The number of severe category
CAD patients declined by 7–18% with increasing serum levels of the three antioxidants and, triple vessel disease declined
by 14–20%. A decline of 39% in Myocardial Infarction (MI) occurred with increasing serum Ceruloplasmin. Serum Ceruloplasmin
was significantly lower in the MI group compared to the non MI group CAD patients. There was a steady and a significant decline
in the mean values of serum levels of cholesterol, Triglyceride, VLDL cholesterol along with BMI with increasing serum level.
The study indicates that with increasing serum levels of the three antioxidants studied, the % MI along with % Triple vessel
disease and severity of CAD goes down suggesting that the modifiable risk factors have to be suitably modified in order to
maintain a reasonably high level of these antioxidants, as the risk factors are inversely related to the serum antioxidant
levels. 相似文献
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随着计算机及网络技术的发展和应用,企业已经广泛使用CAD／CAPP／CAM等技术,但它们相互独立,无法实现企业内部产品CAD信息沟通和分享。然而,企业产品信息需要统一管理,尤其是CAD图纸信息等技术文件的管理,或大到总部和各分支机构,小到各技术员之间的信息沟通和资源共享。为满足需求,针对性的推出了一套适合制造企业的CAD信息集成和资源共享的方案。 相似文献
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Murali Krishna Madisetty Konda Kumaraswami Shivakrishna Katkam Kankanala Saumya Y. Satyanarayana Raju Naval Chandra Maddury Jyotsna Sujatha Patnaik Vijay Kumar Kutala 《Indian journal of clinical biochemistry : IJCB》2016,31(3):278-285
We aimed to assess whether measuring carotid intima-media thickness (CIMT) and oxidative stress markers such as protein carbonyls, malondialdehyde, nitrate and glutathione in plasma of elderly patients without and with coronary artery disease (CAD) identifies early risk for CAD. A total of 50 cases with cardiovascular risk factors over the age of 60 years without CAD, and 50 patients with angiographically documented CAD over the age of 60 years were included in the study. Control group consists of 200 healthy individuals without the risk factors. Demographic details were obtained from all the subjects and CIMT measured by high frequency ultrasound and oxidative stress markers such protein carbonyls, malondialdehyde and total glutathione were determined in plasma by spectrophotometric methods. The distribution of cardiovascular risk factors in without CAD and CAD cases were smokers (16 vs 56 %), hypertension (26 vs 64 %), diabetes (16 vs 56 %) and dyslipidemia (18 vs 58 %) and positive family history (4 vs 38 %). None of the control group had any cardiovascular risk factors. Among the CAD cases, 16 % had single vessel disease, 44 % had double vessel disease and 40 % had triple vessel disease. The CIMT was significantly increased in CAD cases as compared to cases without CAD and healthy controls. On the other hand, CIMT was significantly increased in cases without CAD as compared to healthy controls. CIMT also increased with the duration of diabetes in patients without CAD and severity of disease in CAD cases. The levels of oxidants like plasma malondialdehyde, protein carbonyls, were significantly elevated and antioxidant glutathione levels and nitrate levels were significantly reduced in cases with and without CAD as compared to healthy controls. Oxidative stress markers and CIMT was found to be significantly increased in patients with cardiovascular risk factors like diabetes, family history of CAD, dyslipidemia, hypertension and smoking when compared to patients without risk factors. In patients with diabetes, CIMT increased as duration of disease increases and also in poorly controlled diabetes. In CAD group, when number of vessel involvement (severity of coronary disease) increases, the CIMT also increases confirming that CIMT is a quantifiable risk factor for CAD. 相似文献
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在教育蓬勃发展的今天．对建筑制图及CAD课程的研究却比较滞后。本文通过CDl0教育改革的理念,即培养学生基础知识、个人能力、人际团队能力和工程系统能力四个层面的能力,对建筑制图及CAD实践课程进行了教学改革。 相似文献
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本文通过对机械制图与CAD的关系分析,指出三维几何造型是制图课程教改的内容之一,利用多媒体在机械制图几何画法和绘制组合体三视图等教学过程中运用CAD软件三维几何造型,充分发挥学生想象力,提高学生识图和绘图能力,培养设计和创新意识等;通过CAD二维辅助和三维几何造型训练,学生不仅了解了CAD软件,且能够认识到这种现代工具进行工程设计的便捷、准确性,以及CAD技能对工科大学生的重要性。 相似文献
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G. K. Bhatti J. S. Bhatti R. Vijayvergiya B. Singh 《Indian journal of clinical biochemistry : IJCB》2017,32(2):163-170
Angiotensin-1-converting enzyme (ACE) gene has established substantial attention in the recent years as a candidate gene for hypertension, cardiovascular diseases and type 2 diabetes. The aim of the present study was to investigate the association of ACE (I/D) polymorphism with coronary artery disease (CAD) in a north Indian population. A total of 662 subjects (330 CAD patients and 332 healthy controls) were examined for association of ACE gene (I/D) polymorphism and environmental risk factors. The mean age of the CAD patients and control subjects was 60.53 ± 8.6 years and 56.55 ± 7.7 years, respectively (p = 0.000). Anthropometric and demographic data showed BMI values significantly higher among CAD patients and control subjects (26.98 ± 4.9 vs 24.04 ± 4.7, p = 0.000). We observed pronounced central obesity in both CAD patients and controls, even at the lowest BMI values (<23 kg/m2). Dyslipidemia was highly prevalent in CAD patients compared to control subjects. Genotypic data showed significantly higher frequency of DD genotype in CAD patients than that of control subjects (40 vs 28.3 %). No significant difference was observed in the distribution of ID genotypes between CAD patients and control subjects. Logistic regression analysis of data demonstrate that DD genotype was associated with 1.8 fold increased risk of development of CAD in Asian Indians (OR 1.8; 95 % CI 1.22–2.66; p = 0.003). The frequency of D allele was significantly higher in CAD patients (p = 0.001). No significant difference was observed in the clinical and biochemical characteristics of CAD patients and controls when the data was stratified according to the genotypes of ACE gene. In conclusion, DD genotype of ACE gene may be associated with increased risk of CAD in Asian Indian population. 相似文献
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Seema P. Todur Tester F. Ashavaid 《Indian journal of clinical biochemistry : IJCB》2013,28(2):116-123
There is an increasing interest to understand the molecular basis of high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) subfractions and their association with coronary artery disease (CAD). The formation of these subfractions is greatly influenced by hepatic lipase (HL) and cholesteryl ester transfer protein (CETP) enzymes. To identify genetic markers influencing LDL and HDL subfractions and their role in CAD we performed a case–control genetic association study on 117 healthy controls and 119 angiographically verified CAD patients. Biochemical analysis was performed using standard assays. HDL-C and LDL-C subfractions were estimated using precipitation methods. Genotyping of C-514T (rs1800588) in the LIPC gene for HL and I405V (rs5882) in the CETP gene was done using PCR-based restriction enzyme analysis and sequencing. Both the polymorphisms were not associated with CAD. The C-514T was associated with increased HDL3-C levels in controls (P = 0.049). The I405V polymorphism was found to be associated with low levels of small dense, LDL (P = 0.038). A multiple regression analysis showed that the effects were dependent on gender and triglyceride levels. We conclude that these polymorphisms are not associated with CAD but are important determinants of HDL-C and small dense LDL particles in our population. 相似文献