“碎片化”时代微电影广告的营销策略探析

微电影广告传播迎合了"碎片化时代"被碎片化的受众对"碎片化"信息的需求,她的繁荣源于政策、技术、市场竞争、受众多方面的原因。微电影广告的传播现状不容乐观,其营销策略主要包括:以人为本,内容为主;注重整合营销;健全监督制度。     

CAFTA边界地区就业增长研究——基于地区就业的动态偏离份额分析

本文采用动态偏离份额分析法,运用中国-东盟自由贸易区(CAFTA)边界地区广西和云南2003-2011年的经济数据,详细考察了总体就业增长情况,以及与就业相关的国家增长效应(NGE)、产业综合效应(IME)和地区竞争效应(CE)。结果显示,边界地区的就业增长并没有像理论预测的那样显著区别于其它地区,而且边界地区自身产业发展差异很大。本文认为国家先期于1992年实施的沿边开放政策以及2000年实施的西部大开发战略提前释放了CAFTA一体化效应对边界地区就业增长的作用,导致一体化效应在边界地区被稀释。此外边界地区各自禀赋条件不同,造成各自的优势产业部门差异很大。     

Forecasting Chinese GDP Using Online Data

Because big data are widely used today, whether and how to use big data in macroeconomic forecasting has become a new field of economic research. In macroeconomic analyses, two types of data can be applied, namely, structured data and unstructured information. Statistical government data are well-structured, whereas Internet search behavior information, which is representative of online data, is unstructured. This article explores whether Internet search behavior information can facilitate the forecasting of macroeconomic aggregates and components and analyzes the use of feasible methods of structured data and unstructured information. This study is based on the macroeconomic forecasting model and verifies the effect of the two-step method. We find that Internet search behavior information can help forecast the macro economy, and we determine that the best method for variable selection using structured and unstructured data is the two-step method. First, only statistical government data are used, and temporary optimal models are selected. Second, Internet search behavior information are added to these models, and the optimal model is then determined.     

Vertical Contracts That Reference Rivals

Review of Industrial Organization - We study two types of vertical contracts that reference rivals: the “vertical price constraint” (VPC) requires retail prices for a...     

气相色谱法在食品及饲料质量检测中的应用

近年来,随着人民对食品及饲料质量安全的关注度日益提高,越来越多先进的分析技术被应用于食品及饲料质量检测中。气相色谱仪作为可分离复杂样品组分的精密化学分析仪器,应用也日趋广泛。气相色谱法、气相色谱-质谱联用法、毛细管柱气相色谱-质谱联用法、气相色谱-质谱-核磁共振联用等方法的应用,提高了传统食品及饲料质量检测的效率、灵敏度与范围,为食品及饲料中目标成分的分析提供了技术支撑,有利于我国食品及饲料质量安全的监督与管控。     

Responsive relationship between energy-related carbon dioxide emissions from the transportation sector and economic growth in Beijing—Based on decoupling theory

Decoupling theory is effective to analyze the interdependence between variables and has been applied in environmental economics. However, most of the previous literature focus on “decoupling” and “recoupling” analysis, while rarely consider their driving factors. This study aims to explore the relationship between transportation CO₂ emissions and economic growth in Beijing from 1995 to 2014 by an extended Tapio elastic analysis, considering the contribution from industrial emission reduction, industrial energy saving, industrial operating efficiency, and industrial development. The entire decoupling state between transportation CO₂ emissions and economic growth changed with time. From 1995 to 2005, the decoupling relationship between transportation CO₂ emissions and economic growth exhibits a fluctuation among expansive negative decoupling, weak decoupling, and expansive coupling. Since decoupling elasticity values among industrial energy saving, industrial operating efficiency and industrial development were variably large and neutralized with each other, interaction of these decoupling elasticities may explain the fluctuation of the entire decoupling effect during this period. During the period from 2006 to 2008, the negative impact of industrial energy-saving elasticity overtook the positive one from industrial operating efficiency elasticity, which leads to worsening in the decoupling state between transportation CO₂ emissions and economic growth. The decoupling state was improved from expansive negative decoupling to weak decoupling after 2008, which can be attributed to policy-oriented practices supporting energy conservation.     

Nilotinib versus dasatinib as second-line therapy in patients with Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase who are resistant or intolerant to imatinib: a cost-effectiveness analysis based on real-world data

Objective: To evaluate the cost-effectiveness of second-line nilotinib vs dasatinib among patients with Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase (Ph+?CML-CP) who are resistant or intolerant to imatinib, from a US third-party perspective.

Methods: A lifetime partitioned survival model was developed to compare the costs and effectiveness of nilotinib vs dasatinib, which included four health states: CP on treatment, CP post-discontinuation, progressive disease (accelerated phase [AP] or blast crisis [BC]), and death. Time on treatment, progression-free survival, and overall survival of nilotinib and dasatinib were estimated using real-world comparative effectiveness data. Parametric survival models were used to extrapolate outcomes beyond the study period. Drug treatment costs, medical costs, and adverse event costs were obtained from the literature and publicly available databases. Utilities of health states were derived from the literature. Incremental cost-effectiveness ratios, including incremental cost per life-year (LY) gained and incremental cost per quality-adjusted life-year (QALY) gained, were estimated comparing nilotinib and dasatinib. Deterministic sensitivity analyses were performed by varying patient characteristics, cost, and utility inputs.

Results: Over a lifetime horizon, nilotinib-treated patients were associated with 11.7 LYs, 9.1 QALYs, and a total cost of $1,409,466, while dasatinib-treated patients were associated with 9.5 LYs, 7.3 QALYs, and a total cost of $1,422,122. In comparison with dasatinib, nilotinib was associated with better health outcomes (by 2.2 LYs and 1.9 QALYs) and lower total costs (by $12,655). Deterministic sensitivity analysis results showed consistent findings in most scenarios.

Limitations: In the absence of long-term real-world data, the lifetime projection could not be validated.

Conclusions: Compared with dasatinib, second-line nilotinib was associated with better life expectancy, better quality-of-life, and lower costs among patients with Ph+?CML-CP who were resistant or intolerant to imatinib.     

我国跨境外贸电商平台模式比较分析与选择

电子商务正成为我国中小外贸企业拓展国际市场的重要方式,通过对敦煌网、速卖通、米兰网、兰亭集势网等小额跨境外贸电子商务交易平台及其运作模式的深入研究和比较分析,旨在提高中小企业电子商务应用水平,引导企业从传统的"线下外贸"到"在线外贸"的商务模式转变,帮助中小企业对跨境电商平台进行合理选择。     

产权实现程度影响农户林业收入的机制研究——采用云南省集体林改监测数据的实证检验

新一轮集体林权制度改革改变了农户的产权结构及其实现程度,产权实现程度的变化会促使农户改变要素配置结构,进而带来林业收入的变化。利用2009—2018年“云南省集体林权制度改革跟踪监测”项目对10县500户农户的抽样调查数据,分析发现：集体林地使用权实现程度的提高会使农户减少对林业生产经营的劳动和资本投入,进而导致林业收入降低,反映出当前林业生产的比较收益较低;集体林收益权实现程度的提高会促进农户林业收入的增长,但这种促进效应更多地直接源于减税降费及生态补偿,并非由要素投入的增加引起;集体林处置权实现程度的提高则会促使农户增加对林业生产经营的劳动和资本投入,进而有利于林业收入的增长。因此,单纯的林地“三权”分置并不一定能带来林业的高质量发展和农户林业收入的增长,必须通过技术创新和政策扶持等提高林业生产的比较收益,才能使更多要素流向林业生产;要重视林业发展的生态效应,提高生态补偿标准,引导农户将更多要素持续投入林业生产经营;要进一步增强农户的集体林处置权,适当放松生态管制,建立和完善林业生态产品的价值实现机制,激发农户发展林业的积极性,在促进林业高质量发展的同时有效增加农户林业收入。