农用地分等中不同指标区分等结果可比性实证研究——以陕西省为例

[目的]利用<农用地分等规程>中所给出的因素法进行农用地分等,研究其不同指标区间分等结果的可比性,从而为今后的农用地分等工作提供修正依据.[方法]对陕西省内分别属于不同指标区的户县和合阳县的分等结果中共同分等因素对应的分区间进行对比分析.[结果]属于关中渭河平原区的户县和属于渭北黄土旱塬的合阳县3个相同等别的农用地,其土地自然条件是不一致的.[结论]在农用地分等中,由于不同指标区的分等因素以及所占权重不同,各指标区间分等结果不可比.     

基于GIS的农用地分等·定级与估价技术

简要地介绍了农用地分等、定级与估价的意义、理论与技术方案,展示了空间数据库、空间目标缓冲区、空间数据叠加等多方面GIS技术在农用地分等、定级与估价工作中的应用,并时其成果进行分析,认为利用GIS进行农用地分等、定级与估价工作充分发挥了其图形、属性一体化的优势,在一定程度上提高了这项工作的科学性、可靠性和客观性.     

农用地分等中3个等别的相关性问题探讨

农用地分等是国土资源部新一轮的国土资源大调查的重要组成部分,目前关于农用地分等方法的研究很多.以富平县为例,对农用地分等中3个等别的相关性问题进行实证分析,得出3个等别划分结果不完全一致的结论,从而说明农用地分等规程(TD/T 1004-2003)中的等别划分方法有待改进.     

基于回归分析法的农用地分等县级数据成果检验研究——以陕西省佳县为例

以陕西省佳县为例,采用综合分析法、野外实测法、相关分析和回归分析法对农用地分等数据成果进行检验.结果表明,野外实测和计算出来的等别结果没有显著性的差异;各等指数与标准粮的关系近似线性,即随着等指数的增大,标准粮产量呈上升趋势,分等成果总体合格.     

现代测绘技术在土地开发整理中的应用

土地开发整理是一项新兴的耕地保护模式,土地开发整理作为国家耕地保护政策的重要组成部分,起到"开源"的作用,在国家建设无法避免的造成耕地减少的情况下,通过开发整理,从整体上增加耕地面积,提高耕地质量,以达成切实保护耕地的目的。而耕地面积的增加和变化,不能不借重于现代测绘技术,没有现代测绘技术的支撑,土地如何开发整理,开发整理的成果和效果都无法得以验证。文章在着重阐述现代测绘技术在土地开发整理中的应用规律和其相关内涵基础上,对土地开发整理每个阶段的测绘技术和其应用进行详细的分析,并且就土地开发整理测绘和地形测量、工程测量、地籍测量等相关专业测量的特点进行比较,最后结合土地开发整理项目测绘的工程实践,对开展土地开发整理中应用到的测绘讲几点体会和认识。     

胶州市土地利用变化及其驱动力分析

以胶州市为研究对象,根据1998和2008年土地利用现状数据,运用数理统计和GIS空间叠加方法,分析了胶州市10年来土地利用类型动态变化情况,并从人口、交通、政策和经济4个方面对胶州市土地利用变化的驱动力因素进行了分析.结果表明,10年间胶州市耕地、园地呈减少趋势,城镇工矿用地、交通水利及其他用地呈增加趋势,其中耕地的减少和城镇工矿用地的增加十分显著;主要转移方向包括耕地转化为建设用地,未利用地转化为耕地、其他农用地等;土地利用变化主要受人口、交通、政策和经济等人为驱动力因素的影响.     

露天矿采矿中土地复垦研发取得进展

露天矿的开采要占用很多土地，甚至是宝贵的耕地。因此，在开采过程中，如何少占耕地，如何进行开采过程中的“三废”治理和土地的复垦，保护和改善矿区生态环境，是露天矿开采中开发研究的一个重点课题。     

露天开采占用土地的复垦

露天开采对土地的占用和破坏是我国耕地逐渐减少的一个重要方面。本文论述了露天矿山对土地的破坏和复垦方法,并提出复垦建议。     

城市化进程中耕地保护研究——以河南省为例

以河南省为例,分析了近10年来河南省城市化发展与耕地变化的关系,并采用回归分析法进行建设占用耕地数量预测,进而研究提出了在城市化进程的加速推进阶段,如何克服大量耕地非农化,保护有限的耕地资源和保障粮食安全的对策措施.     

我国将加快改革地方税

国家税务总局局长金人庆今天在此间召开的全国税务工作会议上说,中国将加快地方税改革步伐,包括城市维护建设税、车船使用税、房产税、城镇土地使用税、土地增值税、耕地占用税等。他要求各级税务部门坚决落实地方税改革的各项措施,确保出台一项,落实一项。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Concept of freedom of infection of animal flocks

Totally negative results of epidemiological investigation of random samples do not prove the absence of the infection as the pathogen may be restricted to only a few animals in the herd for a long time. The statement "absence of infection" is critical for such situations. The question is raised, whether the statement "absence of infection" should be generally avoided. Classification of herds and flocks according to the prevalence of the pathogen would be more valid for the implementation of control measures.     

显微维氏硬度测量不确定度评定

对显微维氏硬度测量不确定度进行评定，建立了不确定度计算的数学模型，确定了影响实验结果的各项因素，计算出了各因素的标准不确定度，得出结果的扩展不确定度，并给出最终测量结果的表达式。     

Comparison of the results of surgical and conservative treatment of fractures of the diaphysis of the tibia

In this paper is treated the fundamental problematic of the fracture of the diaphysis of the tibia and the therapeutic results after the conservative and operative treatment are confronted. Among 518 patients with 433 open fractures and 35 with closed fractures of the diaphysis of the tibia, successful treatment of more 2/3 was obtained in the period from 1968 to 1972. Following our casuistics and literature, whose results are similar, we find out that the average total treatment of the osteosynthesis of the fracture of the diaphysis was shortened for 2,5 months depending upon the type and the localisation of the fracture. Apolied methods of the operative and conservative and conservative treatment in relation to the velocity of the medical cure as well as to the extreme anatomical-functional results are analised. We noticed that osteosynthesis, made by the intermedullary nail and the extension of the canals or by a small AO table, by the achieved stability makes conditions of immediate motions and an early rehabilitation. Because of that it gives the best functional results.     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.