全力打造辽宁东部生态旅游基地

桓仁满族自治县地处辽宁东部山区,位于辽宁、吉林两省,本溪、抚顺、丹东、通化四市,本溪、新宾、通化、集安、宽甸五县结合处。县域面积3547平方公里,其中水域面积39.8万亩,林地面积435万亩,森林覆盖率76.6%,是辽宁东部重点水源涵养区,被誉为"辽东绿色屏障"。目前,贯穿境内的通灌铁路、丹通高速公路、永桓高速公路全线竣工通车,田桓铁路、桓集铁路、桓集高速公路即将开工建设,原本交通闭塞的桓仁,一跃成为东北东部的重要交通枢纽。     

D-1,2,4-丁三醇的绿色合成

D-1,2,4-丁三醇(D-1,2,4-butanetriol,BT)是四碳的手性多羟基醇,同时也是极具价值的有机合成中间体,应用十分广泛,特别是在医药和军事工业领域。目前D-1,2,4-丁三醇的工业化生产仍以化学合成法为主,该方法存在反应条件苛刻、产率低、副产物多,易引发环境污染等弊端。目前,利用合成生物学技术,安全高效的生物合成该化学品成为研究的热点。本文评述了D-1,2,4-丁三醇的化学合成和生物合成,以期为D-1,2,4-丁三醇的绿色合成提供理论基础。     

Analysis of dependently truncated data in Cox framework

Truncation is a known feature of bone marrow transplant (BMT) registry data, for which the survival time of a leukemia patient is left truncated by the waiting time to transplant. It was recently noted that a longer waiting time was linked to poorer survival. A straightforward solution is a Cox model on the survival time with the waiting time as both truncation variable and covariate. The Cox model should also include other recognized risk factors as covariates. In this article, we focus on estimating the distribution function of waiting time and the probability of selection under the aforementioned Cox model.     

低压欠平衡钻井—勘探钻井技术发展新动向(待续)

从世界石油经济和供求前景分析出发,得到了石油工业上游领域必须重视难拿储量、重视改造挖潜、重视增产增效、重视提高探井水平的结论。从这些必须要重视的技术领域出发,分析了地质特点、储层特点和经济技术特点,指出了完成这些艰巨任务必须要采用低压欠平衡钻井技术。最后介绍了国外低压欠平衡钻井技术发展的现状及存在问题,结合西南石油学院近7年的储备研究成果,介绍了我国低压欠平衡钻井技术发展的重点和方向。     

粤港澳大湾区西部核心产业创新空间提升规划思考 ——以顺德为例

在粤港澳大湾区一体化发展背景下,顺德以土地换产值的传统增长模式难以为继,制造业面临巨大的下行压力,根本原因是城市创新空间系统性、产学研协同创新转化、优质服务的创新空间不能匹配顺德日益增长的发展需求.本文结合产业创新空间相关基础研究,从内外部创新空间格局视角,重点梳理顺德产业创新空间方面的规划探索.从区域创新合作、多元创新协同、提升空间供给等方面总结既有经验并提出新的思考.     

5-6岁幼儿分享行为和分享动机研究

本研究以厦门市某幼儿园的40名5-6岁幼儿为被试，运用实验法和访谈法，探讨“偶得物品”和“拥有性物品”下幼儿分享行为及其分享动机的特点。结果如下：（1）百分之百的幼儿具有正确的分享判断，但绝大部分幼儿并不愿意分享，“偶得物品”和“拥有性物品”之间的分享行为并没有明显差异。（2）愿意分享的幼儿中，被动分享占主导，其中一大部分是伪分享行为。（3）分享动机中，“同伴倾向”占主导，尤其是“偶得物品”的分享动机；“权威/规则倾向”和“移情倾向”也占有重要地位。     

邓小平社会主义核心价值观教育思想探析

以泰州某大跨度连续梁桥的静动载试验为例，建立ANSYS和桥梁博士模型进行静动力有限元数值计算。将试验结果与模型计算值进行比较，试验结果表明,该桥结构刚度和承载能力满足设计要求。     

Bayesian penalized B-spline estimation approach for epidemic models

Ordinary differential equations (ODEs) are normally used to model dynamic processes in applied sciences such as biology, engineering, physics, and many other areas. In these models, the parameters are usually unknown, and thus they are often specified artificially or empirically. Alternatively, a feasible method is to estimate the parameters based on observed data. In this study, we propose a Bayesian penalized B-spline approach to estimate the parameters and initial values for ODEs used in epidemiology. We evaluated the efficiency of the proposed method based on simulations using the Markov chain Monte Carlo algorithm for the Kermack–McKendrick model. The proposed approach is also illustrated based on a real application to the transmission dynamics of hepatitis C virus in mainland China.     

中泰铁路面临的挑战及对策分析

从英拉政府时期的"高铁换大米"方案到巴育军政府时期的新铁路方案,中泰铁路前后经历了中泰高铁缘起、中泰高铁曲折发展、中泰高铁向中泰铁路转变、中泰铁路发展筹备、中泰铁路发展陷入困境和中泰铁路发展缓慢推进等六个阶段的波折变化.中泰两国关于方案本身的分歧,日本高铁的外部竞争和冲击,以及泰国国内政权更迭频繁等因素是造成中泰铁路一波三折的主要原因.基于对中泰铁路建设"好事多磨"的全面探讨和研究,提出构建政治风险评估和预警机制、创新企业投融资合作模式、加强舆论宣传作用等建议,助力中泰铁路项目平稳推进.     

Exploring the role of the Senate Majority Leader's political public relations efforts

Grounded in first- and second-level agenda building, this study explored the role of the U.S. Senate Majority Leader in shaping the salience of issues and issue attributes in news media coverage and policymaking in 2011. A total of 358 public relations messages, 164 newspaper articles, and 83 policymaking documents were analyzed. Significant correlations were found supporting agenda-building linkages at both levels. Different types of information subsidies were explored, including press releases, blog posts, Facebook posts, and Twitter messages.