Feller Property and Infinitesimal Generator of the Exploration Process

We consider the exploration process associated to the continuous random tree (CRT) built using a Lévy process with no negative jumps. This process has been studied by Duquesne, Le Gall and Le Jan. This measure-valued Markov process is a useful tool to study CRT as well as super-Brownian motion with general branching mechanism. In this paper we prove this process is Feller, and we compute its infinitesimal generator on exponential functionals and give the corresponding martingale. The research of the second author was partially supported by NSERC Discovery Grants of the Probability group at Univ. of British Columbia.     

The relationship between exploration and exploitation strategies,manufacturing flexibility and organizational learning: An empirical comparison between Non-ISO and ISO certified firms

The markets in which organizations currently operate require them to use behaviour based on both exploitation strategy and exploration strategy, each of which contributes fundamental benefits for the firm’s success. Exploitation strategy attempts to obtain the maximum advantage from existing abilities, whereas exploration strategy searches for new ways for the organization to adapt. Further, since manufacturing markets are characterized by short product life, they require a high level of manufacturing flexibility, which can play a crucial role in the development of the exploitation and exploration strategies. This study analyses the relationship of manufacturing flexibility to exploitation and exploration strategies, taking into account an issue of maximum international scope: the implementation of ISO standards. In many international markets, ISO implementation is crucial in enabling organizations to be competitive. However, no consensus has been reached concerning the real benefits that these systems provide to the organizations that implement them. The main goal of our study is to analyse whether there are significant differences in the relationship of manufacturing flexibility to exploitation and exploration strategies in ISO 9001:2000 certified organizations and non-certified organizations. Our results show that most of the relationships analysed are only significant in ISO certified organizations. As an added value, the study analyses the relationship of exploitation and exploration strategies to organizational learning orientation and finds this relationship to be significant in all cases.     

高中生物课堂教学“生活化”有效性的探究

生物教学要密切联系现实生活及社会发展.高中生物"生活化"的教学是在提高学生的素质为前提,"生活化"将生活与生物教学密切联系在一体,从生活导入、运用和延伸课堂教学,活跃课堂教学气氛,调动他们学习生物的积极性,激发他们的学习兴趣,提高课堂教学的效率,培养他们的多元化能力.     

成都市统筹城乡发展的实践探索及启示

2003年以来,成都市以"三个集中"为核心,以市场化为动力,以规范化服务型政府建设和基层民主政治建设为保障,在统筹城乡经济社会发展、推进城乡一体化方面进行了积极的探索。成都市城乡统筹发展的实践探索给了中西部地区很多有益的启示。     

最优化阻尼最小二乘法重力二维反演方法及其应用

地球物理反演是已知场求场源的过程。本文首先描述了最优化选择法中的阻尼最小二乘法的原理和方法技术,然后通过模型试验得到了良好的效果,最后将该方法应用到安徽某铁矿区的重力资料处理中,其反演结果与地质上的推断,以及大功率激电解释结果吻合,证明了重力反演在固体矿产勘探资料处理中的效果是明显的且有实用价值。     

创造思路的探索及其在无链传动自行车设计中的应用

论述了以新产品的产生为目标的一套全新的创造思路及其在无链传动自行车设计中的应用     

共沉淀-感耦等离子体质谱法测定地质样品中的超痕量金铂钯

本工作研究提出了共沉淀富集结合ICP-MS测定地质样品中的金、铂、钯的方法,研究了仪器的最佳化和内标元素的选择。在本工作的实验条件下获得的方法测定下限以6倍标准偏差计分别为Au:0.23 ng·g-1,Pt:0.19 ng·g-1,Pd:0.16 ng·g-1;方法精密度(RSD)Au:1.4％-18.2％,Pt:0.2％-16.4％,Pd:0.4％-13.6％。采用本工作制定的分析方法,测定了国家一级地球化学标准物质中的痕量Au,Pt,Pd,测定值与标准值相吻合。     

鄂尔多斯盆地延长探区页岩气

通过对中生界页岩气、中生界浅层气、上古生界天然气和周边盆地的生物成因气等多种成因气的地球化学特征(包括组分和碳同位素)对比,探讨鄂尔多斯盆地中生界页岩气的成因.鄂尔多斯盆地中生界页岩气甲烷体积分数为46.08%~94.56%,重烃体积分数为2.86%~37.61%,甲烷碳同位素为-52.0‰~-46.4‰.通过天然气组分及碳同位素对比分析,确定鄂尔多斯盆地延长组页岩气的成因既不是来自上古生界煤型气,也不是生物成因气,而是和盆地浅层气地球化学特征相似,属于偏腐泥型源岩热解形成的原油伴生气,源岩为延长组腐泥型烃源岩.考虑到热演化成熟度特征,认为吴旗—庆阳—富县一带中生界烃源岩热演化程度高,为页岩气勘探有利区.     

小矿地质勘查报告质量问题探讨及提高

通过对小矿地质勘查报告质量现状存在的问题、质量下滑可能造成的危害性的研究;从市场、地质研究程度、管理及野外工作质量等方面分析产生原因,提出提高小矿地质勘查报告质量的方法和建议。