提高新闻节目制作效率的方法

文章围绕如何建立简洁实用的新闻节目采编、制作、传输的方式来展开。介绍了前方记者拍摄完新闻事件后快速剪辑素材需要用到的软件、硬件，以及如何根据需要对素材进行有效压缩，然后通过互联网传送回总部等一系列的方法。     

A profit-maximizing model of Federal Home Loan Bank behavior

In this article the price-setting behavior of the district Federal Home Loan Banks (FHLBs) is investigated. Previous studies have viewed the FHLB system as a policy authority that sets the interest rate on FHLB advances in an attempt to stabilize mortgage and housing markets. In this study a profit-maximizing model of FHLB behavior is developed and empirically tested, and the results compared to a model of the FHLB system as a policy authority. The empirical results offer support for the hypothesis of profit-maximizing behavior and indicate that, in addition to the FHLB's cost of funds, factors that influence thrift demand for FHLB advances, deposits, and capital stock are important in explaining FHLB choice variables.     

Indoctrination or education? Intention of unqualified teachers to transfer consumption norms in home economics teaching

Almost two thirds of home economics (HE) teachers in Sweden are formally unqualified (FU). Historically, HE has focused more on fostering and prescribing the ‘right’ choices whereas the modern (2011‐) curriculum focuses on teaching consequences of choices and giving students tools for assessing alternatives. Restraining from prescribing norms requires a high degree of professionalism. The objective of this study was to empirically investigate the prevalence of intentions of FU teachers to prescribe consumption norms not supported by the curriculum. Furthermore, to investigate to what extent these intentions are correlated with years of experience as a teacher, personal preferences, or personal consumption. The intention to transfer norms were measured using the concept of intentional misalignment applied to a survey distributed to a sample of FU teachers attending complementary teacher education. A two part survey was used. The first part consisted of multiple choice questions asking the teachers how important they saw it to transfer different consumption norms to their students (e.g. to consume local or organic food). These responses were evaluated quantitatively (Spearman rank correlation, Wilcoxon rank sum test and Kruskal‐Wallis analysis of variance). The second part consisted of an open‐ended question asking teachers to describe what they saw as the most important take‐home message for students in HE. The answers were compared to the national curriculum to identify intentions to transfer unsupported norms. The study indicates that more than a third of the FU HE teachers in Sweden express the intention to prescribe specific types of consumption or to transfer consumption norms that are not supported by the curriculum. The prevalence is correlated to personal preferences and thus indicates difficulties with keeping a professional perspective. These teachers must be given collegial support and opportunities for continued education–to ensure high‐quality HE education for future generations.     

Econometric analysis of price index for home video cassette recorders in the U.S., 1978-1987

This paper conducts an empirical analysis on the U.S. VCR market using a hedonic approach. The paper finds that quality-adjusted price indices decline at 11-12% per year, with a large annual drop of about 18% from 1982-85. Estimation and data analysis reveal interesting aspects of the evolution of quality and price in the VCR market. As a result of the exclusion of the VCR category until 1986, the paper estimates a bias of 2.4% per year in the CPI electronics subindex.     

The Innovative Performance Of The World'S Largest Firms: Some New Evidence ‡

Data on R & D expenditures and US patenting in the world's 660 largest, technologically active firms both show a linear relation between firm size and the volume of innovative activities, despite some inconsistencies between the two measures. Technological diversity increases with firm size, but relatively weakly, especially in R & D-intensive sectors. Sectoral variations in the comparative technological advantage of large firms based in Japan, the USA and W. Europe are better explained by variations in rivalry in their home market than by variations in their size.     

Migrants' Home Town Associations and Local Development in Mali

We explore the impact of migrants' Home Town Associations (HTAs) on the provision of public goods in Mali. We combine an original dataset on all the HTAs created by Malian migrants in France from 1981 with census data on public goods in all Malian villages since 1976, and we run double‐difference estimations to compare villages with and without an HTA, before and after the creation of the HTAs. We find robust evidence that the provision of schools, health centers, and, to a lesser extent, water amenities has increased significantly faster in villages targeted by an HTA between 1987 and 2009 than in control villages.     

Examining artificial intelligence (AI) technologies in marketing via a global lens: Current trends and future research opportunities

Artificial intelligence (AI) has captured substantial interest from a wide array of marketing scholars in recent years. Our research contributes to this emerging domain by examining AI technologies in marketing via a global lens. Specifically, our lens focuses on three levels of analysis: country, company, and consumer. Our country-level analysis emphasizes the heterogeneity in economic inequality across countries due to the considerable economic resources necessary for AI adoption. Our company-level analysis focuses on glocalization because while the hardware that underlies these technologies may be global in nature, their application necessitates adaptation to local cultures. Our consumer-level analysis examines consumer ethics and privacy concerns, as AI technologies often collect, store and process a cornucopia of personal data across our globe. Through the prism of these three lenses, we focus on two important dimensions of AI technologies in marketing: (1) human–machine interaction and (2) automated analysis of text, audio, images, and video. We then explore the interaction between these two key dimensions of AI across our three-part global lens to develop a set of research questions for future marketing scholarship in this increasingly important domain.     

Pro-market institutions and outward FDI of emerging market firms: An institutional arbitrage logic

We offer new theory and evidence regarding the effects of pro-market institutions on outward foreign direct investment (FDI) of emerging market firms (EMFs). Drawing on the logic of institutional arbitrage, we integrate the escapism and exploitation mechanisms of EMF internationalization into a unified theoretical context. We propose an inverted U-shaped relationship between host market-supporting institutions (MSI) and the investment scale of an EMF’s FDI project in the country, showing an escape-driven upward slope for low-to-medium MSI levels and an exploitation-driven downward slope for medium-to-high MSI levels. We supplement this main argument with two boundary conditions: the alleviating effect of home market liberalization (HML) and the strengthening effect of home government subsidies (HGS), demonstrating the coexistence and variation of pro- and anti- market institutions in an emerging market. Using information on 1,450 FDI projects conducted by 288 Chinese listed firms in 116 host countries, we obtain supportive evidence for the predicted relationships between the three institutional forces. This study enriches the literatures on institutional arbitrage and pro-market institutions with evidence from EMFs.     

Legal evolution of the concept of ‘home base’ for the purpose of determining labour and social security law applicable to European aircrew members

This paper has a dual aim: (1) to outline the legal evolution of the ‘home base’ concept and (2) to map the role of this concept in determining the law applicable (both employment law and social security law) to employment contracts of European aircrew members. An in-depth analysis of the relevant portions of (1) Reg. (EEC) No 3922/91, (2) Reg. (EU) No 465/2012, (3) Reg. (EU) No 83/2014, (4) EASA's 2014 Certification Specifications, and (5) the European Court of Justice's preliminary ruling on joined cases C-168/16 and C-169/16 is conducted.What emerges is that (1) the ‘home base’ definition, due to its subjectivity, has traditionally been susceptible to multiple interpretations and (2) due to regulatory ambiguity, the use of ‘home base’ to identify the labour laws applicable to airline workers has for a long time been inconsistent, ranging from one extreme (being considered a key element for this purpose) to the other (being assigned a secondary role). It was only in the last few years that some improvements were made, with Reg. (EU) No 465/2012 first and the European Court of Justice's 2017 preliminary ruling then, clarifying that the ‘home base’ concept must be assigned a central role in the determination of the law (both social security law and employment law) applicable to employment contracts in the aviation industry.     

Video-based pedestrian grouping model considering long-span space in a big hall

Pedestrian group detection is a challenging but significant issue in pedestrian flow control and public safety management. To address the issue that most conventional pedestrian grouping models (PGMs) can only identify a pedestrian group at a limited distance of less than 2 m, this study extended the pedestrian distance constraint of conventional PGMs with a reconstruction of the normal group detection criterion and development of a novel group detection criterion suitable for long-span space. To measure the movement behavior similarity with normal distance, five necessary constraints: velocity difference, moving direction offset, distance limitation, distance fluctuation, and group-keeping duration were studied quantitatively to form the criterion to detect normal groups. Meanwhile, a long-span group detection criterion was proposed with extended distance and direction consistency constraints. Therefore, this study proposed an improved PGM that considers long-span spaces (PGMLS). In the PGMLS workflow, the MMTrack algorithm was used to obtain pedestrian trajectories. A difference measurement method based on sequential pattern analysis (SPA) was adopted to analyze the velocity similarity of pedestrians. To validate the proposed grouping model, experiments based on pedestrian movement videos in the exit hall of the Shanghai Hongqiao International Airport were conducted. The results indicate that the proposed model can detect both normal and widely separated pedestrian groups, with a long span range of 2–12 m.