四川省加油站多元化经营探析

面对世界各大知名石油公司陆续登陆中国成品油市场，国内加油站纷纷开展多元化经营以应对新的市场竞争，多元化经营成了各加油站的未来发展趋势。针对四川省加油站多元化经营现状，在对四川省加油站非油品市场进行SWOT分析的基础上，指出四川省加油站非油品业务尚处于过渡阶段，市场还未成熟，缺乏竞争力和控制力，并提出了符合四川省加油站特色的、实现多元化经营的6点具体建议，对四川省加油站多元化经营的健康快速发展，抵御外来市场的冲击具有重要的现实意义。     

基于CORS的网络RTK矿山开采沉陷监测方法研究

首先提出基于CORS的网络RTK技术在矿山地表沉降监测中的应用，并对其在矿山沉陷监测中的应用方法及误差进行了分析，提出一种网络RTK与静态GPS观测相结合的空间修正模型用以提高网络RTK技术在矿山沉陷监测中的精度。应用此种方法对网络RTK的定位精度进行探讨分析，其结果表明：在技术措施制定合理和外业观测条件良好的情况下，基于CORS的网络RTK技术使用此种空间修正模型用于提高矿山沉陷监测的精度是可行的，能够极大地拓展工作范围，提高工作效率，具有广阔的应用前景。     

流动青少年生殖健康的家庭影响

流动青少年的生殖健康知识、态度和行为存在明显的弱质性:总体知识水平较低,尤其是性病与避孕知识缺乏严重;对早恋和对婚前性行为的态度日渐开放;性活动与性行为趋向活跃,意外妊娠和人工流产成为流动未婚青年生殖健康的严重问题。流动青少年家庭客观生存环境较差、父母主观重视不够、家庭教育能力不足、亲子关系欠佳、交流沟通不畅等因素,成为影响流动青少年的生殖健康的重要因素。必须要重视流动人口的家庭发展权,丰富家庭教育支持资源,逐步建立全方位、开放性的性教育和服务模式,促进流动青少年性与生殖健康发展。     

An Intercultural Competence Model of Strategic Public Relations Management in the Peru Mining Industry Context

This study develops and tests an intercultural competence model of strategic public relations management in the Peruvian mining industry. The model proposes that public relations practitioners' trait-level intercultural competence (empathy, open-mindedness, and flexibility) affect their perceptual-level competence (anxiety and uncertainty management), which in turn influence their behavioral-level competence (public relations practices) and the consequent relational quality with the publics. Structural equal modeling was used to analyze the data from 90 practitioners with rich intercultural public relations experiences. Results indicated that trait competence components worked differently in reducing practitioners' uncertainty and anxiety. Such distress reduction enhanced the use of symmetrical and two-way public relations. Finally, symmetrical public relations and lowered anxiety increased practitioners' perceptions of trust and control mutuality in the relationships their organizations had with the publics. The model's theoretical and practical implications are discussed.     

文化落差:京津冀一体化发展过程中必须面对的事实

本文从文化软实力的角度分析了京津冀一体化发展中文化发展的作用,指出文化的同源性为京津冀一体化发展打下了良好的基础,但是改革开放以来,由于经济发展的不同步,导致京津冀文化的发展形成较大的落差,如在政治氛围、教育资源和信息资源、市场意识和理念以及服务意识等方面存在明显的落差,针对存在的差异提出了相应的对策。     

《太平广记》对元人宗教信仰的影响

《太平广记》是一部笔记小说总集，包含有大量的佛、道、民间神祗的内容，具有很高的宗教文化价值，历经两宋的传播，进入元代社会。元代是一个多元的社会，宗教平等，信仰自由，宗教文化繁荣，《广记》中的宗教信仰元素与这一时期包容性的社会特点相契合，影响grz-~的思想、行为，使得元朝时期的宗教民俗文化愈加丰富、灿烂。     

A semidefinite programming study of the Elfving theorem

The theorem of Elfving is one of the most important and earliest results which have led to the theory of optimal design of experiments. This paper presents a fresh study of it from the viewpoint of modern semidefinite programming. There is one-to-one correspondence between solutions of the derived semidefinite programming problem (SDP) and c-optimal designs. We also derive a uniqueness theorem which ensures a unique optimal design without assuming the linear independence property over the largest set of supporting points. The SDP can also be cast as an ?₁‐convex program which has recently been extensively studied and often yields sparse solutions. Our numerical experiments on the trigonometric regression model confirm that the SDP does produce a sparse optimal design.     

Return Migration of Foreign Students

Using administrative panel data, this paper presents a comprehensive empirical analysis of the return of recent foreign students in the Netherlands. We focus on how individual labour market changes and marriage formation influence their decision to leave. Our model allows for correlated unobserved heterogeneity across the migration, the labour market and the marriage formation processes. The large size of the data permits us to stratify the analysis by five groups based on the country of birth. The empirical analyses reveal that when students become unemployed they leave faster. The effect of finding a job on return is more ambiguous. For students from developed (including EU) countries it hardly affects their return, while students from less developed countries and Antilles/Surinam are more prone to leave after finding a job. Marriage in the Netherlands makes the students more prone to stay.     

后摩尔时代数字经济的创新方向

长期以来,数字经济的兴起与发展一直得益于摩尔定律的作用.然而,随着消费互联网阶段摩尔定律日益趋近极限,后摩尔时代悄然来临.后摩尔时代集成电路芯片的技术轨道跃迁将推动数字技术经济范式跨越转折期、进入拓展期.延续技术驱动数字经济发展的演进逻辑,数字经济在技术基础、创新重心、产业发轫、产权结构、组织结构、金融资本和制度支持等方面将面临新的创新方向.把握好后摩尔时代芯片的技术跃迁机遇和数字经济发展新方向,对中国实现经济总量的"变道超车"具有重大战略意义.     

基于文献回顾与讨论的农民政治参与特征、因素与影响

政治参与是民主政治的组成部分,提高民众的政治参与水平是推动民主政治发展的重要途径。改革开放以来,中国将发展基层民主作为推动民主政治建设的重要举措,广大农民的政治参与获得了前所未有的发展。农民的政治参与呈现出制度化和非制度化并存的特征。在农民政治参与的政治活动中,经济的发展、社会的变迁和政治体系的结构等因素都对于农民的政治参与产生了重要的影响,展现了这些因素与农民政治参与之间的复杂性关系。农民的政治参与对推动国家的民主政治发展,改善农村的基层治理水平具有推动作用。