西安f7地裂缝发展变化的预测研究

论文首先分析和总结了影响西安地裂缝发展变化的主要人为因素。随后,利用三维非稳定渗流分析方法研究了人类活动对地下水位的影响;根据西安市新增固定资产投资的变化,预测了地面荷载的变化;以时间、地下水位和地面荷载为基本变量,建立了预测f 7地裂缝活动趋势的BP神经网络模型;最后,借助MATLAB语言进行编程,利用训练稳定的网络模型,预测了f 7地裂缝的活动趋势以及年平均的垂直位移沉降量,为进一步研究西安地铁2号线安全运行和防护提供参考依据。     

Fundamental Moral Attitudes to Animals and Their Role in Judgment: An Empirical Model to Describe Fundamental Moral Attitudes to Animals and Their Role in Judgment on the Culling of Healthy Animals During an Animal Disease Epidemic

In this paper, we present and defend the theoretical framework of an empirical model to describe people’s fundamental moral attitudes (FMAs) to animals, the stratification of FMAs in society and the role of FMAs in judgment on the culling of healthy animals in an animal disease epidemic. We used philosophical animal ethics theories to understand the moral basis of FMA convictions. Moreover, these theories provide us with a moral language for communication between animal ethics, FMAs, and public debates. We defend that FMA is a two-layered concept. The first layer consists of deeply felt convictions about animals. The second layer consists of convictions derived from the first layer to serve as arguments in a debate on animal issues. In a debate, the latter convictions are variable, depending on the animal issue in a specific context, time, and place. This variability facilitates finding common ground in an animal issue between actors with opposing convictions.     

Impacts of Suburbanization on Urban Eco-environment of Xi’an in China

Suburbanization in large cities is an important phenomenon in the process of urbanization development in China in recent decades,which plays a very important role in promoting city development,whereas some side effects on the eco-environment appeared at the same time.This paper,taking Xi’an City in China as a case study site,analyzed the features of population suburbanization and industry suburbanization and pointed out the impacts of suburbanization on urban eco-environment.Based on the research,suggestions of countermeasures for urban planning and municipal management of Xi’an City in protecting urban eco-environment and conserving natural ecology were put forward in the end.     

地方协调发展的政府财政保障分析——以三亚市实施全面建设小康社会战略为例

将全面建设小康社会置于实施可持续发展战略的大背景下研究政府财政特别是地方政府财政的保障作用,具有非常强的实践意义和理论意义.文章立足于全面建设小康社会监测指标体系,充分利用现行有关监测全面小康社会实现程度的测算结果,同时引入发展协调度的应用.在梳理政府财政与经济社会发展间的理论关系基础上,文章明确了地方政府财政保障经济社会发展中的协调作用.通过综合运用了加权平均、回归拟合、主成分分析等方法进行实证,不但验证了发展的协调能力与发展的综合能力的高度相关性,还验证了财政保障地方协调发展的有效性.亦即,地方政府财政通过发挥协调功能,可以以更快的速度促进全面小康社会的实现.在结合三亚实际进行分析的基础上提出了地方政府在实施全面建设小康社会的协调发展战略中应采取优化财政支出结构优先保障提供公共产品和服务,建立财政保障长效机制调整既有的利益格局等一系列有益的政策建议.     

经济快速发展地区土地利用结构的时空演变——以苏锡常地区为例

利用1996～2007年苏锡常地区土地利用变更数据，从土地利用变化幅度、动态度、变化强度、相对变化率及景观生态学角度，对区域土地利用结构的动态变化及区域差异进行分析。研究结果表明：近十多年来，由于区域经济快速发展，工业用地扩展迅猛，城镇加速蔓延，从而导致区内耕地面积锐减，居民点及工矿用地、交通用地所占比例则逐年上升，交通用地的变化幅度及动态度最大；各用地类型的变化强度在此期间呈一定波动，除牧草地外，交通用地历年的变化强度之和最大，其次为园地、居民点及工矿用地、水利设施用地、耕地、其他农用地、林地、未利用地；区域土地利用结构逐渐向均衡状态发展，用地结构的均质性逐渐增强，地区土地利用结构渐趋稳定；各市耕地、居民点及工矿用地、其他农用地的变化幅度及相对变化率差别不大，而园地、林地、牧草地、交通用地、水利设施用地及未利用地的变化幅度及相对变化率区域差异较大，且三市园地、牧草地及未利用地的变化方向不一致。     

基于GPR-TOPSIS方法的充填配比多目标多属性优化

为获得某金矿尾砂胶结充填材料最优配比,基于试验结果,以海水比例、灰砂比和料浆质量浓度为输入参数,以充填体强度、塌落度及泌水率为输出参数,建立了充填配比与其响应量的高斯过程回归模型,分析了不同因素对充填性能的影响程度;采用遗传算法对高斯过程回归模型进行多目标参数优化,获得了Pareto非劣解,在此基础上,引入多属性决策的TOPSIS法对Pareto非劣解进行方案优选,确定了充填最优配比。研究结果表明:高斯过程回归模型相对误差值均小于6%,可靠性高;灰砂比及料浆质量浓度对充填性能影响较为显著,采用海水作为充填水源将降低充填体的强度;经优化后的充填配比与试验结果相符。     

云南普洱6.4级地震震害分析

2007年6月3日云南普洱发生6.4级地震,震源深度仅5km。地震对当地各类建筑物和构筑物造成不同程度的破坏。本文根据此次地震现场调研,介绍了地震烈度分布与震区破坏等级划分,归纳了土木、砖木、砖混、框架结构房屋等建筑结构的震害情况,同时对供排水、交通、电力、通讯系统及水利工程等基础设施的破坏状况加以概括,并对各类结构的破坏原因进行了分类分析。总结了此次地震的震害特点,提出了未来村镇防震减灾工作的若干建议。     

Use of sensitive methods for detection of DNA damage on human lymphocytes exposed to p,p′-DDT: Comet assay and new criteria for scoring micronucleus test

Wide distribution, stability and long persistence in the environment of dichlorodiphenyltrichloroethane (DDT), probably the best-known and most useful insecticide in the world, imposes the need for further examination of the effect of this chemical on human health and especially on the human genome. In this study, peripheral blood human lymphocytes from a healthy donor were exposed to 0.025 mg/L concentration of p,p′-DDT at different time periods (1, 2, 24 and 48 h). For the assessment of genotoxic effect, the new criteria for scoring micronucleus test and alkaline comet assay were used. Both methods showed that p,p′-DDT induces DNA damage in low concentration used in this research. Results of micronucleus test showed a statistically significant (p < 0.05) genotoxic effect of p,p′-DDT on human lymphocytes compared with corresponding control and a different exposure time. A comet assay also showed increased DNA damage caused in p,p′-DDT-exposed human lymphocytes than in corresponding control cells for the tail length. Results obtained by measuring the level of DNA migration and incidence of micronuclei (MN), nucleoplasmic bridges (NPBs) and nuclear buds (NBUDs) indicate the sensitivity of these tests and their application in detection of primary genome damage after long-term exposure to establish the effect of p,p′-DDT on human genome.     

主题公园的体验化设计模式研究——以西安大唐芙蓉园为例

主题公园成功的关键是根据游客的需要为其提供足够的体验,吸引与留住游客并且增加游客的重游率。从体验经济的角度,提出主题公园产品的核心就是体验。分析了主题公园体验的影响因素、类型和体验化设计模式,指出主题公园的体验化设计能力将是主题公园核心竞争力所在,探讨了西安大唐芙蓉园的体验化设计模式。     

西部特大城市FDI比较研究——以西安、成都、重庆为例

自1993年开始,中国连续18年成为FDI流人量最大的发展中国家,并在地区上呈现出“东多西少”的不平衡现象。自2004年以来,我国FDI逐渐向西部地区转移,相关研究尚不多见。以我国西部地区吸引FDI的主要城市西安市、成都市和重庆市为研究对象,从引资规模、投资质量、产业分布、投资来源地和投资方式五个方面进行比较分析,并运用SPSS软件比较了FDI对当地经济增长、产业结构和城市发展等方面的影响。结论为：①重庆市引资规模最大,西安市利用FDI质量最高;西安市的FDI主要投资于第二产业,重庆市和成都市集中于第三产业;三大城市的投资来源地和方式基本相同。②西安市的FDI对经济的拉动作用和对地区资本形成的影响最大,但溢出效应最小,落后于成都市和重庆市。③FDI对西安市城市规模的促进作用最大,而对成都市的城市化水平提升最显著。