我国粮食安全预警系统研究

粮食是一种极其重要的商品,又是一种极其重要的经济资源,并且也是一种极其重要的“生命资源”和战备资源。建立我国粮食安全预警系统的对策是：建立全国耕地与农业生产遥感监测与预警系统;建立组织机构;加强粮食安全动态监测;形成系统网络;加强粮食现代物流体系建设。     

When do B2B brands influence the decision making of organizational buyers? An examination of the relationship between purchase risk and brand sensitivity

The dominant perspective on organizational buying behavior suggests that buyers tend to rely on objective criteria when making product choice decisions and that the potential influence of subjective cues, such as brands, on buyer decision making decreases with increasing risk. An alternative perspective, confirmed in this study by in-depth interviews with various managers, suggests that brands serve as a risk-reduction heuristic, whereby the influence of brands on decision making increases as a function of risk. Building on risk and information processing theories, this research builds on these complementary perspectives to propose that risk and brand sensitivity relate in a U-shaped manner, where brand sensitivity is highest in relatively low- or high-risk situations. The results of scenario- and survey-based field studies—involving 206 and 180 members of buying centers, respectively—suggest that both perspectives have merit and support the proposed nonlinear relationship. Moreover, the findings reveal that the risk-brand sensitivity relationship is moderated by competitive intensity, such that the linear (negative) and quadratic (positive) effects are stronger when competitive intensity is low.     

Assessing cross-cultural marketing theory and research

A content analysis of 99 articles focuses on the comparative cross-cultural marketing research in 14 leading marketing and business journals from 1990 to 2008. The content analysis indicates strong growth in cross-cultural studies, especially in terms of studies on consumer attitudes and behavior and on promotion-related topics. This study classifies articles according to a series of conceptual (e.g., cultural dimensions employed in the study) and methodological (e.g., use of analytical technique) criteria. Although researchers have advanced in both conceptual and methodological respects, the studies still focus strongly on the dimensions from Hofstede (2001); methodologically, the dominance of two-country studies is problematic. Further, survey data from North America and Europe and researchers based and trained in North America and Europe are still dominant in the research field.     

Assessing cross-cultural marketing theory and research: A commentary essay

Cross-cultural research (CCR) is extremely important for advancing understanding of the range and limits of theoretical constructs and frameworks across different cultural contexts. CCR also provides an important understanding of the differences between countries and cultures. This commentary essay examines the review conducted by Engelen and Brettel (2010) and comments on shortcomings, as well as identifying areas where more needs to be done. A critical first step is to properly define the unit of analysis. This step is particularly critical as the concept of “national culture” is becoming increasingly less relevant and the appropriate culture unit for examination is often a smaller, more homogeneous grouping within a given geographic location. This view allows more meaningful inferences to be made and controls for possible contextual confounds, as well as providing a richer understanding of the limits of national culture in an increasingly global economy.     

企业研发管理的现状及分析

研发是一个企业不断创新以获取和维持核心竞争力的重要途径,也是企业生存和发展的需要。目前,我国企业在研发管理方面的表现并不十分乐观,存在的诸多问题已经成为企业研发管理的瓶颈。研发是一条充满艰辛和风险的道路。研发活动不但需要投入大量的资源、打造强大的职业化的研发队伍,更关键的是要建立一个高效的研发管理体系。在总体规划上,需要以一流企业为标杆,制定研发管理水平不断提高的长期计划。主要包括局部优化、部门级研发组织及流程变革、企业级平台变革、跨企业创新变革等方面。     

中国乡村振兴研究评述与展望

目的 乡村振兴对助力中国特色社会主义现代化强国建设意义重大。通过对乡村振兴已有研究回顾梳理,从文献特征、演进路径、主题热点等方面进行分析,进而展望未来的发展趋势,为进一步推动乡村振兴提供理论指导和实践借鉴。方法 文章将2007—2022年中国知网（CNKI）期刊中文数据库发表的以“乡村振兴”为主题的3 532篇论文作为样本,借助科学计量分析工具CiteSpace软件,对中国乡村振兴研究主题脉络和研究热点进行全面剖析。结果 （1）乡村振兴文献数量呈现上升趋势,研究历程可以分为起始发展期和蓬勃发展期2个阶段,核心研究机构之间存在一定的合作交流,但学者和研究机构之间的合作强度不大,尚未形成联系紧密的学术共同体和高产作者集群。（2）已有研究主要集中在脱贫攻坚与乡村振兴的有效衔接、乡村治理体系的转型与创新、乡村产业的融合发展、乡村振兴与精准扶贫联动发展机制等方面。（3）关键词聚类呈现出4个核心主题,包括乡村振兴的科学内涵、发展模式、成效测度和发展对策。结论 完善乡村振兴理论体系构建、促进乡村振兴发展模式改革创新、精准测度乡村振兴成效、共助乡村振兴持续高速发展是未来乡村振兴的重要研究方向。     

防火涂料研究及其应用

本文介绍了防火涂料的基本属性及研究、应用情况，同时详细的介绍了饰面型防火涂料，钢结构防火涂，电缆防火涂料等几种防火涂料。     

防污涂料的应用和技术进展

本文对防污涂料的发展历史进行了介绍,综述了近代防污涂料的种类,重点论述了各种低毒和无毒防污涂料的研究进展,对我国防污涂料的发展现状和目前存在的问题进行了总结,并对防污涂料的发展趋势作了概括。     

再生式通信卫星转发器的研究进展

随着星上高速数据处理与交换的需求不断增加,再生式通信卫星转发器逐渐成为研究 热点。概述了几种典型的再生式转发器国内外最新研究进展,指出了其信息处理、交换技术 发 展中存在的主要问题,包括多载波解调、吞吐量较低以及微波/光调制等,在此基础上提出 了合适的补偿技术、星上半透明突发交换、光副载波调制以及波分复用等针对性的解决方法 ,可为我国卫星转发器设计以及星上信息处理、交换等关键技术研究提供参考。