农业信贷资金配置的经济效应——基于面板数据单位根检验、协整检验及误差修正模型

利用Cobb-Douglas生产函数建立农业信贷投入与农业经济增长的模型,基于中部地区1978-2007年的面板数据,运用单位根检验、协整检验以及误差修正模型对中部地区农业信贷投入与农业经济增长之间的关系进行短期和长期的分析.结果显示:中部地区农业信贷投入与农业经济增长存在长期双向因果关系,在短期只存在农业经济增长引导农业信贷投入的单向因果关系,即农村金融发展为需求导向型,农业信贷的投入并没有成为促进农业经济增长的原因.在此基础上,提出了农村金融体制改革的相关政策和建议.     

我国西部地区特色农业发展策略

西部大开发的实施虽然成效显著,但是东西部差距仍在扩大.如何促进西部农业增效和农民增收,提高西部地区农产品市场竞争力,特色农业是一项战略性选择.西部地区要实现农业经济的腾飞并与东部地区协调发展,必须发挥区域比较优势,发展特色农业.在分析我国西部地区发展特色农业的优势、必要性、开发现状及存在问题的基础上,探讨了组建特色农业基地的战略构想,并提出了加快西部地区特色农业发展的主要措施.对实施农业结构调整,加快农业产业化进程,实现农业和农村经济可持续发展,具有重要的指导价值.     

西部地区农业可持续发展的实证分析

运用农业可持续增长方式评价的理论模型对西部地区农业可持续增长进行了实证分析.结果表明,西部地区现有农业增长方式是不可持续的,指出转变农业增长方式才是实现西部地区农业可持续发展的必经之路.     

河北省科技投入与农业经济增长的关系研究

通过协整分析,对河北省科技投入与农业经济增长的关系进行实证分析,结果表明,科技经费投入与农业经济增长之间存在长期稳定关系,科技经费投入每增长1%,带动农业经济平均增长0.45%.因此,在当前条件下,加大农业科技投入是促进河北省农业经济增长的重要途径.     

试论我国农村金融发展与农村经济增长

造成农村经济增长缓慢的原因之一就是农村金融的供给瓶颈.我国农村金融存在农村金融组织不完善、农村信用社资产质量差等问题,农业再生产资金匾乏.要促进农村经济的发展,农村金融改革势在必行.解除金融抑制、促进农村经济发展需要整个系统的配套推进和完善,只有这样金融与经济才能走上良性循环的轨道.     

农业产业化水平与农村金融供给的关系研究——以河南省为例

笔者利用因子分析方法,探讨了河南省农业产业化发展水平与农村金融供给的关系,结论表明,在农业产业化水平高的地区,农业产业化水平与金融供给存在一定的正向变化趋势,而在农业产业化水平低的地区则没有表现出正向互动关系.在此基础上,提出促进农业产业化发展的金融政策建议.     

河北省农村居民人均收入与消费水平影响因素分析——基于协整检验

对1999～2008年河北省农村居民人均收入和消费支出的有关数据进行了协整检验,通过两者之间的动态关系研究发现,农村居民人均收入与消费支出有长期的均衡关系,据此建立了农民人均收入和消费支出之间的长期均衡模型.结果显示,收入是决定居民消费需求的基本因素,且现在收入的增长对消费的增长具有很重要的影响;政府应制定合理的政策,建立社会保障网,改变消费观念等方式从根本上解除农民的后顾之忧,最终达到增加农民收入的结果,促进农村地区经济的持续稳定健康发展.     

股权分置改革前后股票市场与经济增长关系的实证研究

利用Johansen协整模型,对股权分置改革前后我国股票市场与经济增长的关系进行检验,实证检验结果显示,股权分置改革前后股票市场与经济增长均存在某种长期均衡关系.对比分析发现,股权分置改革后股票市场与经济增长的相关性更为明显,即股权分置改革作为政策变迁因素显著地提高了股票市场对经济增长的影响.     

西北少数民族地区乡镇企业发展的制约因素及对策

本文阐述了自改革开放至西部大开发以来,我国西北少数民族地区乡镇企业的发展现状(人民的发展心态、政府的发展计划和各地方公共政策金融制度).包括在政策、市场体系、经济总量、经济规模、非农产业等方面.探讨了通过对西北少数民族地区发展的制约因素.     

1952～2008年全国农业生产对经济增长推动作用的实证研究

为探讨农业生产对经济增长的推动作用,选取1952～2008年全国历年农业产值和国内生产总值数据,利用Eviews软件对其进行诸如单位根检验、协整检验、误差修正模型(ECM)的建立、Granger因果关系检验、向量自回归(VAR)模型、脉冲响应函数以及方差分解的一系列研究.结果表明,农业生产对经济增长的贡献较为显著,其推动作用较为明显.     

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。     

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.     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

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.