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关键词： 木材检验   木材缴库   拨付   作用  

摘要： 木材检验工作在森工企业的生产环节中,占有非常重要的地位,特别是在贮木场及山上林场的木材接验收及缴库拨付中,发挥的作用更为明显,森工企业要想实现其经济效益的最大化,就必须做好木材的检验工作。现阶段我国木材缴库和拨付中还存在很多问题,本文为着重从木材检测的角度来进行相关分析,并提出了一些具体的可行措施,以期实现森工企业生产管理水平的有效提高。

关键词： 合同结构   工程造价   总包   平行承包  

摘要： 不同的合同结构形式对工程造价有不同影响，选择哪种合同结构形式需考虑影响造价的主要因素有，业主自身的管理团队、总包单位的能力、减免税费、项目开办费等。?

关键词： INSULIN-RESISTANCE   CARDIOVASCULAR-DISEASE   COMPLICATIONS   DEFINITION   RISK   ATHEROSCLEROSIS   POLYMORPHISM   ASSOCIATION   CHOLESTEROL   MANAGEMENT  

摘要： Background. The aim of this study was to examine the prevalence of metabolic syndrome (MS) components in an urban Mexican sample. Methods. A total of 854 subjects were included. Anthropometric, blood pressure measurements, clinical data, and overnight fasting blood samples were obtained from all subjects. Results. In accordance with definitions by the American Heart Association/National Heart, Lung, and Blood Institute (AHA/NHLBI) and the International Diabetes Federation (IDF), the prevalence of MS among participants was 59.7 and 68.7%, respectively. The prevalence of MS was higher in women and in individuals older than 45 years of age. More than 40% of the subjects fulfilled four criterions of MS according to both definitions. Conclusions. There was a high prevalence of MS components in an urban Mexican sample. Therefore, strong strategies had to be developed for early detection of MS and its components to prevent DMT2 and atherothrombotic complications in these patients.

关键词： Girls in science   Science identities  

摘要： At a 5-day summer camp designed for middle-school girls (N = 50), fifth through ninth-grade students were able to identify with individual scientists and learn more about the science field. Data from the girls' journals, pictorial representations, and field notes demonstrated that these young women related to scientists who actively engaged them in hands-on, problem-based activities and had a sense of humor while doing so. Girls closely identified with science fields that offer an opportunity for travel and for interaction with animals. In addition, it is evident that the girls' personal and social interactions shaped their perceptions of scientists and helped them internalize their experiences as members of a science community in relation to their overall science identities.

关键词： 系统   应用   检验工作流程   重要数据   因素影响   检验人员   检验报告   基本职责   工作热情   责任心   工作者   临床   科室   出差  

摘要： 作为为临床提供大量重要数据的科室,提供及时准确的检验报告是检验工作者的基本职责,但仅凭检验人员的责任心和工作热情往往难以达到这一要求,传统的检验工作流程错综复杂,人为因素影响广泛,不出差错在所难免.

关键词： 温度   湿度   棉纤维  

摘要： 棉纤维的等级主要由长度、长度整齐度、纤维强度来决定。棉花在检定储存过程中温湿度对其影响非常大。温湿度计量,是提供棉花检定存储温湿度定量管理的重要依据。使用高精度的温湿度计可以提高棉纤维温湿度观测记录的准确性,是保证棉花质量水平、发挥管理效益的一个重要环节。

关键词： Multi-temporal image segmentation   Image classification   Landsat   Tropical forest   Land cover   REMOTELY-SENSED DATA   OBJECT-BASED METHOD   DEFORESTATION   EMISSIONS  

摘要： The TREES-3 project of the Joint Research Centre aims at assessing tropical forest cover changes for the periods 1990-2000 and 2000-2010 using a sample-based approach. This paper refers to the 1990-2000 assessment. Extracts of Landsat satellite imagery (20 km x 20 km) are analyzed for these reference dates for more than 4000 sample sites distributed systematically across the tropical belt. For the processing and analysis of such a large amount of satellite imagery a robust methodological approach for forest mapping and change detection has been developed. This approach comprises two automated steps of multi-date image segmentation and object-based land cover classification (based on a supervised spectral library), followed by an intense phase of visual control and expert refinement. Image segmentation is done at two spatial scales, introducing the concept of a minimum mapping unit via the automated selection of a site-specific scale parameter. The automated segmentation of land cover polygons and the pre-classification of land cover types mainly aim at avoiding manual delineation and at reducing the efforts of visual interpretation of land cover to a reasonable level, making the analysis of 4000 sample sites feasible. The importance of visual control and correction can be perceived when comparing to the initial automatic classification result: about 20% of the polygon labels were changed through expert knowledge by visual interpretation. The component of visual refinement of the mapping results had also a notable impact on forest area and change estimates: for a set of sample sites in Southeast Asia (similar to 90% of all sites of SE-Asia) the rate of change in tree cover (deforestation) was assessed at 0.9% and 1.6% before and after visual control, respectively. (C) 2011 Elsevier Inc. All rights reserved.