WEB-IS (integrated system): an overall view

WEB-IS, Web-based Integrated System, allows remote, interactive visualization of large-scale 3-D data over the Internet, along with data analysis and data mining. In this paper, we discuss the overall structure of WEB-IS. Up until now we have developed three sub-modules geared towards geophysical problems. WEB-IS1 allows geoscientists to navigate through their 3-D geophysical data, such as seismic structures or numerical simulations, and interactively analyze the statistics or apply data-mining techniques, such as cluster analysis. WEB-IS2 lets a user control Amira (a powerful 3-D visualization package) remotely and analyze, render and view large datasets across the Internet. WEB-IS3 is an imaging service that enables the user to control the scale of features to view through interactive zooming. In the near future, we propose to integrate the three components together through a middleware framework called NaradaBrokering (iNtegrated Asynchronous Real-time Adaptive Distributed Architecture, a distributed messaging infrastructure that can be used to intelligently route data between the originators and registered consumers) without regard for time or location. As a result, WEB-IS will improve its scalability and acquire properties of fault-tolerance. WEB-IS uses a combination of Java, C++, and through the use of NaradaBrokering will seamlessly integrate the server-side processing and user interaction utilities on the client. The server takes care of the processor intensive tasks, such as visualization and data mining, and sends either the resulting bitmap image or statistical results to the middleware across the Internet for viewing. WEB-IS is an easy-to-use service, which will eventually help geoscientists collaborate from different sites in a natural manner. It will be very useful in the next 10 years because of the increasing number of space missions and geophysical campaigns.     

The implementation of computer based systems

The difficulty of implementing planned change in an organization is legend. In the last 20 years the implementation of computer based models and systems in particular has received a significant amount of attention in the form of hundreds of conference presentations, published case studies, and research reports. Yet, system implementation failures are still prevalent. p]This paper surveys the implementation literature primarily in three fields: management information systems, operations research/management science, and production-inventory management. Common difficulties are identified and managerial proverbs, consultants' insights, statistically verified procedures, research conclusions. and other such documented wisdom for improving the chances of implementation are analyzed. p]A classification scheme is developed which divides this documented material into three diverse categories of pitfalls in implementation. These categories are then discussed from the perspective of providing managers with the information needed to analyze their own organization in terms of the likelihood of successfully implementing such computer based information systems as Material Requirements Planning (MRP).     

Efficiency,Profitability, and College Football: do Bettors Overrate the Major Conferences in Interconference Play?

This article tests the efficient market hypothesis and the profitability of a simple betting strategy in college football. All games are examined that have a point spread for inter-conference matches involving a Power Five/Automatic Qualifying team from September 2003 through January 2016. The tests reject the efficient market hypothesis for these matchups, with a large subset of matches driving this result. The betting strategy evidence suggests it is nonrandom but it is not particularly profitable for the entire sample. However, there is evidence that betting on certain conferences to cover the point spread (win the bet) results in profitable returns over the period.

     

Labor Surplus in Korea: A Reassessment

The paper estimates the Korean turning point, as defined in the labor-surplus model of Lewis (1954) and Fei and Ranis (1964), using a wide variety of data. The best estimate is somewhere in the period 1964-1968. In addition, unlike previous estimation work several data series are shown to support the entire model in addition to dating the turning point. Caution is urge in the use of econometric estimations of production-function parameters as a way to time the turning point. [O5]     

Shark bytes: message sensation value and emotional appeals in shark diving websites

Websites designed to promote risky activities provide a novel context for studying the role of emotional appeals and message sensation value (MSV) in risk messages in order to ultimately understand the type of messages that motivate people to engage in risk behaviors. Framed in theories of message design and emotion, this study investigates representations of threat, efficacy, and the extent to which risk messages appeal to a range of positive and negative emotions through the examination of 53 shark diving websites using content analysis and computer generated linguistic analysis. Results indicate that few websites provide explicit threat information (i.e. severity and susceptibility) but many do present implicit threats. Efficacy-related messages were present on all websites. Positive emotion was more common than negative emotion and there is little representation of the traditional components of MSV. Implications for theory development and communication about risk-seeking are addressed.     

Product cannibalization and the role of prices

The role of brand prices in contributing to product cannibalization is examined. Price elasticities and reference price theory are used to provide a theoretical foundation and empirical test for the impact of a firm's cheap brand on one of its expensive brands. Results are consistent with the conclusion that the market share of the company's premium brand was cannibalized by a growth in sales of its cheap brand.     

Organizational communities of practice: Review,analysis, and role of information and communications technologies

Information and communications technologies (ICTs) play a key role in supporting Communities of Practice (CoPs). A review of the extant literature reveals six factors that facilitate or constrain the development, sustenance, and effectiveness of CoPs that, in turn, enable generative and degenerative structures and behaviors that affect epistemic environments within Organizational Communities of Practice (orgCoPs). OrgCoPs are accepted as beneficial organizational learning structures and need to be deliberately designed and cultivated. The materiality of ICTs that is used to support orgCoPs may play a role in supporting or opposing seeding structures. The literature review further reveals five material properties that describe the relationship between the orgCoPs and the technologies used to support it. We argue that these distinct but intersecting properties are germane to understanding the role that ICTs play in supporting orgCoPs and propose that the future work on orgCoPs could be nuanced if examined through the lens of ICTs’ materiality.     

Time-varying inflation persistence in the Euro area

This paper investigates how inflation persistence in the Euro area has evolved between 1991 and 2006. Employing an ARMA(1,11) model with time-varying autoregressive parameter, we find that inflation persistence has fallen markedly since the third stage of the EMU began in January 1999 and inflation no longer exhibits unit-root behaviour.     

China's export growth and the China safeguard: threats to the world trading system?

Abstract Is there evidence from China's pre‐WTO accession period that newly imposed U.S. or EU import restrictions deflect Chinese exports to third markets? We examine this question by drawing on a newly constructed data set of U.S. and EU product‐level import restrictions on Chinese trade imposed between 1992 and 2001, and we estimate their impact on Chinese exports to alternative markets. We find no systematic evidence that the import restrictions imposed during this period resulted in Chinese exports surging to third markets. To the contrary, there is weak evidence of a chilling effect on China's exports to third markets.