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41.
42.
通过对室内环境设计与装饰装修自身特点以及前存在问题的剖析。提出了室内环境设计与装饰装修的三条基本原则:以“人”为中心的原则;以“文化”为基调的原则以及与各相关系统相统一的原则。  相似文献   
43.
In this study, experimental and three-dimensional numerical studies were performed to investigate the effects of plate spacing and temperature difference on natural convection between isothermally heated upward-facing lower horizontal plate and externally insulated horizontal upper plate. Air is used as the heat transfer medium. Rayleigh number varied in the 1108–2.339 × 105 range. Several numerical simulations for three-dimensional steady laminar and turbulent flows heat transfer were carried out using a commercial CFD code Fluent 6.2. Results have shown that there is a good agreement between the numerical and present experimental results as well as with available data in literature.  相似文献   
44.
Stop-loss, take profit and price breakout strategies, though in some ways theoretically unattractive, are nonetheless popular with traders. We describe and illustrate a simple, fast, flexible and practical discrete time computational model for performing probabilistic analyses of the risks, rewards and tradeoffs associated such strategies.  相似文献   
45.
通过对酶箱模具设计和改进过程的分析,提出了企业在追求低投入高产出时,必须是在确保产品质量的前提下考虑效益最大化,否则是得不偿失的。提示设计人员在搞设计时,要把握住质量和投入的平衡。  相似文献   
46.
An iterative reweighted least squares (IRWLS) procedure recently proposed is shown to converge to the support vector machine solution. The convergence to a stationary point is ensured by modifying the original IRWLS procedure.  相似文献   
47.
The purpose of this study is to observe the disease-disability association through a cross-sectional study. Between 1994 and 1995, we conducted a questionnaire survey in 5 towns in Japan. Among the items included in the questionnaire, 5 related to ADL (bathing, feeding, dressing/undressing, toileting, and going out socially) were treated as purpose variables; and 5 related to the history of medical treatment received over the past year (diabetes, heart disease, cerebrovascular disease, neuralgia, and bone fractures) were used as explanatory variables. Multiple logistic models were applied to observe the relationship. The history of medical treatment for cerebrovascular disease greatly and unavoidably affects disability related to ADL. Bone fractures, diabetes, and heart diseases contributed to specific ADL disabilities.  相似文献   
48.
In this study, total phenolic contents and antioxidant activities of grape seed extracts obtained from twelve different grape seeds from common varieties grown in Turkey were determined. Grape seeds were extracted with 70% acetone and extraction yield of grape seed were calculated. The total phenolic content of grape seed extracts were determined by the Folin‐Ciocalteu procedure and ranged from 33 945 to 58 730 mg per 100 g extract as gallic acid equivalent. Antioxidant activities of grape seed extracts with two different free radical scavenging methods, ABTS [2,2/‐azinobis (3‐ethylbenzothiazoneline‐6‐sulfonic acid)] and DPPH (2,2‐diphenyl‐picrylhydrazyl) assays, using Trolox equivalent as standards, were investigated. Grape seed extracts exhibited antioxidant activities 2.46–4.14 and 3.55–5.76 [Trolox equivalent antioxidant capacities (TEAC) mg?1 extracts] in ABTS and DPPH assays, respectively. Compared with varieties, Muskule extracts exhibited the lowest total phenolic content, TEACABTS and TEACDPPH value while Narince extracts had the highest total phenolic content and TEACDPPH value, and Alphonse Lavalleé had the highest TEACABTS value. Total phenolic content showed that there is a significant correlation with TEACDPPH (r = 0.7974, P ≤ 0.001) and TEACABTS values (r = 0.4860, P ≤ 0.05).  相似文献   
49.
基于应用统计学知识及市场调研文献资料,通过对服装市场调研方法、工具以及问卷调研的评价指标梳理,结合服装市场问卷调研的实际案例和常见问题及误区,探析产生原因及改进方法,为从事相关工作的调查者提供借鉴。  相似文献   
50.
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