Self-Serving Attributions in Corporate Annual Reports: A Replicated Study

This study is a replication of Bettman and Weitz (1983) in the Singapore context. Data from Letters to Shareholders in 208 annual reports published in 1985 and 1994 were used to analyse the patterns of causal explanations for corporate performance outcomes. The general self-serving pattern of attributions found in the original study was also identified in this study. However, the data of the original study do not unequivocally support either the motivational or informational explanation for the existence of self-serving attributions, whereas the latter explanation is strongly supported by the data of this study. This finding is consistent with the growing evidence provided by cross-cultural psychological research indicating East Asians' greater sensitivity to situational influences when making causal attributions. In short, the present study clearly illustrates the important role of replication in the knowledge accumulation and theory development of strategy research.     

The physical Properties of marine sediments as inferred from Wavelet Correlation Analysis

Seismic waves traveling in the water/sediment or sub-bottom sediment interface have been the subject of considerable interest in underwater acoustics in recent years. Some progress has been made in understanding the propagation and attenuation characteristics of interface waves in different geological environments. However, the generating mechanisms are poorly understood. In particular, what is the acoustic-seismic energy conversion process? As seismic waves involve both time and space parameters it should be able to relate directly the propagation characteristics of the ocean bottom interface waves to the shear properties of the sediments over the propagation area. To address these problems we have applied the wavelet correlation method (WCR) to examine the variations of bottom characteristics and their role in coupling waterborne sound into the sea bottom. To confirm the validity of the developed modeling technique, we applied the wavelet correlation analysis for synthetic seismograms and field data. In this discussion paper we present images of the first and second shear modes and the interface wave component as a function of arrival time and frequency. We also discuss the possibility of inverting phase and group velocity information directly from the wavelet cross-correlation function and propose the way of using the WCR method to predict physical dynamic parameters of marine sediments.     

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.     

Interactive visualization of 3D mantle convection

The current availability of thousands of processors at many high performance computing centers has made it feasible to carry out, in near real time, interactive visualization of 3D mantle convection temperature fields, using grid configurations having 10–100 million unknowns. We will describe the technical details involved in carrying out this endeavor, using the facilities available at the Laboratory of Computational Science and Engineering (LCSE) at the University of Minnesota. These technical details involve the modification of a parallel mantle convection program, ACuTEMan; the usage of client–server socket based programs to transfer upwards of a terabyte of time series scientific model data using a local network; a rendering system containing multiple nodes; a high resolution PowerWall display, and the interactive visualization software, DSCVR. We have found that working in an interactive visualizastion mode allows for fast and efficient analysis of mantle convection results.     

川蔓藻的重要生态服务功能评述

川蔓藻是一种分布于全世界的沉水植物,对维持河口海岸湿地生态系统健康起着举足轻重的作用。但近几十年来川蔓藻正面临着人类活动带来的严重威胁,种群衰退严重。文章对川蔓藻海草床的重要生态服务功能进行了分析和评述,以期提高公众对川蔓藻重要性的认识,加强对川蔓藻的有效保护与管理。     

THEMEQUAL—Adapting the SERVQUAL Scale to Theme Park Services: A Case of Hong Kong Disneyland

Faced with keen competition in the theme park operating environment, operators have realized the necessity of maintaining a high standard of service quality in order to survive. Because of the scarcity of literature on theme park service quality, the present study adapts the SERVQUAL model and modifies it as the THEMEQUAL model to measure the gap between perceived service quality and expected service quality from visitors under the theme park setting. The Hong Kong Disneyland is selected due to its importance to the Hong Kong tourism industry. The impact of the dimensions of the model on visitor satisfaction is also examined. Results expressed visitor satisfaction in terms of physical environment, but signified dissatisfaction on employee performance. Among the six dimensions of the model, “responsiveness and access,” “assurance,” and “empathy” are the critical predictors of visitor satisfaction. Discussions on the findings are presented and managerial implications are explained in detail.     

Experiments in scientific computation on the PlayStation 3

The Sony PlayStation 3 (PS3) offers the computational power of a parallel processor at low cost, which makes it a great starter unit for development in parallel programming. To explore the capabilities of the unit, we took a simple ray tracing program and extended it to render triangulated height field data across the PS3’s 6 synergistic processing units (SPUs). We also implemented the heat averaging equation as a precursor to CFD analysis on the PS3. In our studies, we found the Cell engine in the PS3 to be a powerful machine, however great care must be taken while developing because its unique platform calls for many levels of optimization to ensure efficiency.     

REIT Institutional Ownership Dynamics and the Financial Crisis

Collectively, institutional investors hold large ownership stakes in REITs. The traditional view is that institutions are both long-term and passive investors. The financial crisis beginning in 2007 provides an opportunity to analyze the investment choices of institutional investors before, during, and after the crisis. Our results indicate that institutional ownership increased prior to the financial crisis, declined significantly during the period of market stress, but rebounded after. These results hold for four institutional investor subtypes: mutual funds/investment advisors, bank trusts, insurance companies, and other institutions, with mutual funds/investment advisors and bank trusts most clearly exhibiting this pattern. We also find evidence that institutions actively manage their REIT portfolios, displaying a “flight to quality” after the market downturn by reducing beta and individual risk exposure, and by increasing ownership in larger REITs.