我国风险投资发展中的障碍与对策

与一般性产业投资相比较，风险投资有其独特的性质。在我国，风险投资仍处于起步阶段，目前应借助资本市场，拓宽风险资本的来源；积极筹建“二板市场”，进一步强化政府对风险投资的激励；并加强专门人才培养和法制建设，消除风险投资发展中的障碍，促进风险投资的发展。     

On the accuracy in high‐dimensional linear models and its application to genomic selection

Genomic selection is today a hot topic in genetics. It consists in predicting breeding values of selection candidates, using the large number of genetic markers now available owing to the recent progress in molecular biology. One of the most popular methods chosen by geneticists is ridge regression. We focus on some predictive aspects of ridge regression and present theoretical results regarding the accuracy criteria, that is, the correlation between predicted value and true value. We show the influence of singular values, the regularization parameter, and the projection of the signal on the space spanned by the rows of the design matrix. Asymptotic results in a high‐dimensional framework are given; in particular, we prove that the convergence to optimal accuracy highly depends on a weighted projection of the signal on each subspace. We discuss on how to improve the prediction. Last, illustrations on simulated and real data are proposed.     

Critical Literacy as a Lens for Students’ Evaluation of Sources in an AP World History Class

Abstract

Critical literacy is an appropriate learning outcome for social studies courses because it has the potential to teach students how to critically evaluate sources of information relevant to historical texts and current news media. The purpose of this qualitative case study is to examine the process through which students learned to apply critical literacy strategies while completing an end-of-unit research project in tenth grade AP world history. This study looks as student and teacher interviews to examine how students use critical literacy approaches and perspectives to analyze texts. As a result of this study it was determined that: (1) students at the elite private school had limited experience with source evaluation and critical literacy prior to this research project, (2) critical literacy served as an effective evaluation tool for reliability and bias for some students, (3) certain students experienced challenges in using critical literacy as an evaluation tool, and (4) students believed that critical literacy would benefit them personally and academically. Results include implications for instructors who wish to teach critical literacy and source evaluation in this information age.     

国内外低压油气藏开发技术现状

针对低压油气藏的特点，介绍了国内外开发低压油气藏的一些技术现状，包括钻、完井地层保护技术，开发井网调整技术，注水（气）增压开发技术，酸化压裂等油层改造增产措施。国内外     

燃油税改革后我国普通公路融资平衡关系分析

燃油税改革规范了普通公路的融资机制,但是相应地也打破了已有的融资平衡。以政府为主导的财政支持体系主要包含了燃油税、车辆购置税和国债三大资金来源,本文的数据分析表明目前的财政支持体系不可能支持庞大的普通公路资金需求。以政府为主导的普通公路融资体系在当前阶段仍需依赖多元化的融资渠道,因此通过创新融资方式,吸引社会资金多渠道融入地方融资平台,可能是行之有效的融资困境缓解办法。     

高职校学生工作二级管理有效机制的创设

结合校系二级管理模式的运用实践,提出了学生工作实行二级管理的意义,分析了二级管理实践中存在的不足,理顺了校系二级管理的关系、目标与职责,并从管理、指导、服务等方面介绍了实施校系两级学生管理的具体措施与手段.     

The resource constrained multi-item inventory problem with price discount: a geometric programming approach

In this paper we present a geometric programming approach for determining the inventory policy for multiple items having price discount and a limit on the total average inventory of all the items. An example is solved to illustrate the method.     

城市岩溶区地铁隧道的溶洞超前探测及处治技术

以正在施工的大连地铁2号线（松江路站～东纬路站）暗挖区间工程为例，介绍了暗挖爆破法穿越富水岩溶区、溶洞发育区域时的施工工序流程和超前地质预报手段。利用地质补勘钻孔、超高密度电法跨孔电阻率CT探测、洞内超前探孔等技术手段详细探明溶洞发育位置、形态，通过洞内与地表相结合的处理方式消除或减小溶洞对暗挖施工的影响。超前地质预报手段与施工工序流程的成功应用，为类似环境下城市地铁施工提供参考及借鉴意义。     

提升卷烟价格管理信息化水平的思路探讨

本文阐述了卷烟价格信息化的含义，通过分析烟草行业卷烟价格信息化的发展阶段和发展现状，总结了卷烟价格信息化面临的问题。并根据烟草行业目前的发展环境，提出了今后卷烟价格信息化的发展思路，使卷烟价格的信息化为行业的规范经营服务，为宏观决策提供参考依据。