Gregg, Dawn G. & Scott, Judy
Communications of the ACM Vol. 51, Issue 4, p. 69-74

This research shows that reputation systems serve an important function in today’s online world. Results of this study indicate that more than 97% of complaints do allege serious problems with the seller. Comments often indicate that sellers lack business training and clear commerce standards, like proper communication skills (44.2%) and appropriate return policies (10.5%). However, a greater proportion of the complaints contain allegations of fraud. This study shows that 69.7% of negative comments posted in eBay’s feedback forum indicate that the seller may have defrauded the buyer by failing to deliver the item, misrepresenting the item in the product description, selling illegal goods, by adding charges after the close of the auction, or by shill bidding. This rate of fraud is twenty times higher than the rate quoted by eBay. This makes reputation systems important to both online auction houses and to law enforcement as they try to combat rising levels of online auction fraud.

Labels: Gregg, Scott

Alidaee, Bahram, Kochenberger, Gary, Lewis, Karen, Lewis, Mark, and Wang, Haibo
European Journal of Operational Research Vol. 186, Issue 2, p. 504-512

In recent years the unconstrained quadratic binary program has emerged as a unified modeling and solution framework for a variety of combinatorial optimization problems. Experience reported in the literature with several problem classes has demonstrated that this unified approach works surprisingly well in terms of solution quality and computational times, often rivaling and sometimes surpassing special purpose methods. In this paper we report on the application of this unified framework to set packing problems with a variety of coefficient distributions. Computational experience is reported illustrating the attractiveness of the approach. In particular, our results highlight both the effectiveness and robustness of our approach across a wide array of test problems.

Labels: Kochenberger

Lewis, Mark, Kochenberger, Gary, and Alidaee, Bahram
Computers & Operations Research Vol. 35, Issue 3, p. 807-813

The set-partitioning problem (SPP) is widely known for both its application potential and its computational challenge. This NP-hard problem is known to pose considerable difficulty for classical solution methods such as those based on LP technologies. In recent years, the unconstrained binary quadratic program has proven to perform well as a unified modeling and solution framework for a variety of IP problems. In this paper we illustrate how this unified framework can be applied to SPP. Computational experience is presented, illustrating the attractiveness of the approach.

Labels: Kochenberger

Gregg, Dawn
Communications of the ACM (In Press)

Collective intelligence is a fundamentally different way of viewing how applications can support human interaction and decision making. Most pre-Web 2.0 applications have focused in improving the productivity or decision making of the individual user. The emphasis has been on providing the tools and data necessary to fulfill a specific job function. Under the collective intelligence paradigm, the focus is on harnessing the intelligence of groups of people to enable greater productivity and better decisions than are possible by individuals working in isolation. The processes involved in designing and implementing specialized collective intelligence applications are discussed in the context of DDtrac, a web-based application that allows for the easy collection and summary of special education data.

Labels: Gregg

Aguinis, Herman and Pierce, Charles A
Journal of Organizational Behavior Vol. 29, Issue 1, p. 139-145

There is a science-practice gap in organizational behavior (OB) whereby entire bodies of scholarly knowledge are ignored by practitioners. We identify research needed to improve performance management practices that is likely to enhance the relevance of OB in the eyes of practitioners and thus help reduce the science-practice gap.

Labels: Aguinis

Gregg, Dawn
Journal of Universal Computer Science (In Press)

There are many challenges developers face when attempting to reliably extract data from the web. One of these challenges is the resilience of the extraction system to changes in the web pages information is being extracted from. This paper compares the resilience of information extraction systems that use position based extraction with an ontology based extraction system and a system that combines position based extraction with ontology based extraction. The findings demonstrate the advantages of using a system that combines multiple extraction techniques, especially in environments where websites change frequently and where data collection is conducted over an extended period of time.

Labels: Gregg

Keaveney, Susan M., Huber, Frank and Herrmann, Andreas
Journal of Business Research Vol. 60, Issue 10, p. 1207-1215

This research examines how two prepurchase stages of the buyer decision process-information search and alternative evaluation–and two postpurchase stages-evaluation of product and service attributes-influence buyer regret. The study extends prior consequences of regret to include purchase intentions toward both brand and the channel. Tested in a field sample of luxury automobile purchasers, results show that higher information search and alternative evaluation lead to more buyer regret; lower evaluations of service (but not product) attributes lead to more regret; and regrets' consequences include reduced intentions to repurchase either the brand or from the dealership. Buyers who switch brands experience more regret than buyers who did not switch brands.

Labels: Keaveney

Gregg, Dawn G. and Walczak, Steven
MIS Quarterly (In Press)

Businesses can choose who they want to be online. Product and company attributes that are directly perceivable in the real world can be manipulated to make a favorable impression on online buyers. This study examines whether creating a more professional online e-image can signal consumers about unobservable product or company quality, and whether this signal influences their willingness to transact with the company, and ultimately the prices they are willing to pay for the company's goods and services. An empirical study is presented that examines two online auction businesses utilizing different company names and auction listing styles to sell items in parallel over the course of one year. The findings suggest that increasing the quality of an auction business's e-image does increase consumers' willingness to transact with the business, and increases prices received at auction. The study also demonstrates the ability to use eBay as an experimental laboratory for testing a variety of hypotheses about purchasing behavior online.

Labels: Gregg, Walczak

Jansen, Dennis W., Qi Li, Zijun Wang, and Jian Yang
Journal of Econometrics (In Press)

Using a flexible semiparametric varying coefficient model specification, this paper examines the role of fiscal policy on the US asset markets (stock, corporate and treasury bonds). We consider two possible roles: as a separate direct information variable and as a (indirect) conditioning information variable indicating binding constraints on monetary policy actions. The results show that the impact of monetary policy on the stock market varies, depending on the condition of fiscal deficits or surpluses. The impact of fiscal policy on corporate and treasury bond yields also follow similar patterns as in the equity market. The results are consistent with the notion of strong interdependence between monetary and fiscal policies.

Labels: Yang

Lane, Vicki R. and Scott, Susanne G.
Organizational Behavior & Human Decision Processes, Vol. 104, Issue 2, p. 175-192

This paper proposes the Neural Network Model of Organizational Identification; the model depicts organizational identification as an associative link within an organization member’s social knowledge structure of self as it relates to a focal organization. Within this knowledge structure, organization identification connects self to organization via an attribute sub-network that includes self-concept and organization identity and via a valance sub-network that includes organization based self-esteem and attitudinal commitment. This model draws on the principles of balance-congruity, imbalance dissonance, and differentiation [Greenwald, A. G., Banaji, M. R., Rudman, L. A., Farnham, S. D., Nosek, B. A., & Mellott, D. S. (2002). A unified theory of implicit attitudes, stereotypes, self-esteem, and self-concept. Psychological Review, 109, 3–25.] to predict relationships between these organizational constructs. The Neural Network Model of Organizational Identification is parsimonious yet it effectively integrates and synthesizes the burgeoning literature on organizational identification. By operating at a neural network level of analysis, the model departs substantially from existing organization models by (1) specifying unique construct definitions; (2) offering an alternative perspective of the affective/cognitive dimensions and interrelationships; (3) introducing the concept of implicit cognition to the literature on organizational identification, which makes apparent problems with current measures; and (4) explaining phenomena not explained in existing models. This perspective adds precision and reveals that organizational identification is interconnected within a reciprocal network of mutual causality.

Labels: Lane

Conner, Elizabeth C. and Schaefer, Michael V.
Tax Adviser Vol. 38, Issue 11, p. 653-654

The article focuses on tax treatment of compensation received as a nonprofessional representative. According the U.S. Internal Revenue Service, self-employment tax only applies for a nonprofessional executor or administrator if a trade or business is included in the assets of the estate, the executor actively participates in the business and the fees are related to operation of the business.

Labels: Conner

Guo, Hui, Robert Savickas, Zijun Wang, and Jian Yang
Journal of Financial and Quantitative Analysis (In Press)

Recent authors argue that the value premium constructed from the cross-section of stocks is a proxy for investment opportunities. We show that this conjecture sheds light on the puzzling empirical risk-return tradeoff in the stock market across time. That is, in contrast with many early authors, we find that the stock market return is positively and significantly related to its conditional variance after controlling for its covariance with the value premium. The covariance, which is negatively correlated with stock variance, is positively and significantly priced as well.

Therefore, by ignoring the effect of time-varying investment opportunities on the stock market return, the early specification might suffer from an omitted variables problem, which generates a downward bias in the estimate of the risk-return relation. Also, consistent with recent investment-based equilibrium models, we document a positive and significant relation between the value premium and its conditional variance over the post-1963 period. Overall, our empirical evidence suggests that the value premium might be a proxy for investment opportunities.

Labels: Yang

Mannino, Michael, Hong, Sa Neung and Choi, In Jun
Decision Support Systems (In Press)

We evaluate an efficiency model for data warehouse operations using data from USA and non-USA-based (mostly Korean) organizations. The analysis indicates wide dispersions in operational efficiency, industry and region differences, large differences in labor budgets between efficient and inefficient firms, few organizations efficient in both refresh processing and query production, and difficulty of providing some variables. Follow-up interviews provide insights about the value of efficiency comparisons of information technology organizations and suggestions to improve the model. Using this analysis, we propose a framework containing data warehouse characteristics and firm characteristics to explain IT operational efficiency at the subfirm level.

Labels: Mannino

In this article the author examines methods which management professionals can use to excel in their given fields. He contrasts the academic study of human resource management with the practical application of the process. Examined are the roles played by different types of professionals in the field such as management consultants, human resource managers in a corporate setting and journalists who report on personnel matters. He notes that academics use management science to create new knowledge, while practitioners are not always receptive to academic theory, preferring more practical applications. In addition the author examines human resource matters and the influence on them of evidence-based management.

Labels: Cascio

Steven Walczak
Organizational Research Methods Vol. 10, Issue 4, p. 710-712

The article reviews the book "Neural Networks in Organizational Research: Applying Pattern Recognition to the Analysis of Organizational Behavior," by David Scarborough and Mark John Somers.

Labels: Walczak

Yang, Jian, Xiaojing Su, and James W. Kolari
Journal of Banking and Finance, (In Press)

Labels: Yang

Karimi, Jahangir, Somers, Toni M., and Bhattacherjee, Anol
Journal of Management Information Systems Vol. 24, Issue 2, p. 221-260

Many enterprise resource planning (ERP) implementation projects fail despite huge investments. To explain such failures, we draw on the resource-based view (RBV) of the firm to define various dimensions of information systems (IS) resources. Using resource-picking and capability-building arguments, we examine the relationships between IS resources and ERP capabilities to find out whether they have complementary effects on outcomes. Empirical results from a survey of manufacturing firms that recently implemented ERP systems support the hypothesized model. For IS research, this study further develops the complementary and capability-building roles of IS resources, integrates RBV into our current knowledge of ERP implementation, and provides theoretical explanations for when or under what conditions building ERP capabilities has the highest impact on business process outcomes. For IS practice, it emphasizes the importance of IS resources in building ERP capabilities, provides preliminary measures for IS resource dimensions, and demonstrates their impact on firms' ERP capabilities and consequent business process outcomes.

Labels: Karimi

Alidaee, Bahram, Glover, Fred, Kochenberger, Gary and Wang, Haibo
European Journal of Operational Research Vol. 181, Issue 2, p. 592-597

The unconstrained quadratic binary program (UQP) is proving to be a successful modeling and solution framework for a variety of combinatorial optimization problems. Experience reported in the literature with several problem classes has demonstrated that this approach works surprisingly well in terms of solution quality and computational times, often rivaling and sometimes surpassing more traditional methods. In this paper we report on the application of UQP to the maximum edge-weighted clique problem. Computational experience is reported illustrating the attractiveness of the approach.

Labels: Kochenberger

Yang, Jian, and David A. Bessler
uropean Journal of Operation Research, (In Press)

Labels: Yang

Arak, Marcelle and Rosenstein, Stuart

CFA Digest Vol. 37, Issue 3, p. 77-78

The article compares the features of the Treasury Inflation-Protected Securities (TIPS) and Series I Savings Bonds, two alternatives for investors hoping to avoid the negative effects of inflation on their portfolios without incurring credit risk, to determine the better after-tax alternative for the individual investor. Results reveal that TIPS enjoyed an 80 bps real return advantage over I Bonds.

Labels: Arak

Aguinis, Herman and Branstetter, Steven A.
Journal of Management Education Vol. 31, Issue 4, p. 467-483

The authors use proven cognitive and learning principles and recent developments in the field of educational psychology to teach the concept of the sampling distribution of the mean, which is arguably one of the most central concepts in inferential statistics. The proposed pedagogical approach relies on cognitive load, contiguity, and experiential learning theories and on the integration of new knowledge within previously formed knowledge structures. Thus, the proposed approach stimulates both visual and auditory learning, engages students in the process of learning through problem solving, and presents information so that it builds on existing knowledge. Results of an experiment including introductory statistics undergraduate students indicate that students exposed to the proposed theory- based pedagogical approach enhanced their learning by approximately 60%.

Labels: Aguinis

Keaveney, Susan M.
Journal of Business Research (In Press)

Previous research related to marketing describes deep emotional bonds that develop between humans and their pets (primarily cats and dogs). Another multi-billion-dollar international market that needs exploration flows from the highly-involving bonds between humans and their horses. Horses are not pets, but the study of equine relationships with humans generates insights into animal-companion interactions. This article reports results of an interpretive phenomenological investigation of the relationship between humans and their horses, using participant observations, in-depth interviews, and written open-ended questions including the critical-incident technique. Analysis of the data first addresses a priori themes from the animal-companionship literature and identifies themes found, themes with a twist, and themes not found. The article then discusses seven emergent themes unique to human–horse relationships — including physicality, partnership, bonding through adversity, flow experience, communitas, spirituality, and life lessons.

Labels: Keaveney

Failures in large-scale information technology implementation are abundantly documented in the practitioner literature. In this study, we examine why some firms benefit more from enterprise resource planning (ERP) implementation than others. We look at ERP implementation from a technological diffusion perspective, and investigate under what contextual conditions the extent of ERP implementation has the greatest effect on business process outcomes. Using empirical data, we find that the extent of ERP implementation influences business process outcomes, and both ERP radicalness and delivery system play moderating roles. For information systems (IS) practice, this study helps managers direct their attention to the most promising factors, provides insights into how to manage their complex interactions, and elaborates on their differential effects on business process outcomes. For IS research, it integrates innovation diffusion theory into our current knowledge of ERP implementation and provides theoretical explanations for ERP implementation failures.

Labels: Karimi

Kellogg, Deborah L. and Walczak, Steven
Interfaces Vol. 37, Issue 4, p. 355-369

The scheduling of nursing staff is a long-standing problem with myriads of research models published by academia. The exploratory research that we discuss examines the models that academia has produced and the models that hospitals have actually used. We use data from many sources, including research articles, e-mail and telephone surveys, an industry database, and a software source catalog. Only 30 percent of systems that research articles discuss are implemented, and there is very little academic involvement in systems that third-party vendors offer. We examine causes for the research-application gap and discuss directions for future academic research to make it more applicable.

Labels: Kellogg, Walczak

Gregg, Dawn G.
The Learning Organization Vol. 14 Issue 4, pp. 300-312

Purpose - This paper illustrates the advantages of using intelligent agents to facilitate the location and customization of appropriate e-learning resources and to foster collaboration in e-learning environments.

Design/methodology/approach - This paper proposes an e-learning environment that can be used to provide customized learning. It utilizes a set of interacting agents that can personalize instruction based on an individual's prior knowledge as well as their cognitive and learning needs. The e-learning agents monitor the e-learning environment and improve learning and collaboration based on learners' prior knowledge, social characteristics and learning style.

Findings - e-Learning agents should allow discovery of new learning objects more easily, allow learners to customize materials presented to improve learning outcomes, and improve collaboration in the e-learning environment.

Originality/value - Little prior research has been done on the use of agents in e-learning environments. This paper proposes a set of e-learning agents that, if implemented in online education or training environments, should provide tangible benefits to organizations.

Labels: Gregg

Ruhnka, John and Bagby, John W

CPA Journal Vol. 77 Issue 5, pp. 50-56

The article offers suggestions regarding the management of electronic data discovery (EDD) in litigation in the U.S. Familiarity with EDD is necessary to conduct internal investigations, as well as to identify and disclose electronically stored information (ESI) to litigation opponents, regulators, or prosecutors. Many potential parties to a lawsuit are not knowledgeable about electronic records management (ERM) practices or their legal obligations when served with a discovery request.

Labels: Ruhnka

Wu, Chorng-Guang, Gerlach, James H., and Young, Clifford E.
Information & Management Vol. 44, Issue 3, p. 253-262

We investigated open source software (OSS) developers’ intentions to continue their involvement in future projects. The research goal was to analyze the motivations of OSS developers systematically and identify those factors that influenced their continuation. A work motivation model for OSS developers was proposed and a research model was empirically validated using data from a field survey of 148 OSS participants. The results showed that OSS developers’ feelings of satisfaction and their intentions to continue with OSS development was influenced by both helping behavior and economic incentives and also that adequate motivators existed, though OSS developers did not benefit equally and there was substantial room to improve their experiences as OSS developers.

Labels: Gerlach, Young

Aguinis, Herman and Smith, Marlene A.
Personnel Psychology Vol. 60 Issue 1, p. 165-199

We propose an integrative framework for understanding the relationship among 4 closely related issues in human resource (HR) selection: test validity, test bias, selection errors, and adverse impact. One byproduct of our integrative approach is the concept of a previously undocumented source of selection errors we call bias-based selection errors (i.e., errors that arise from using a biased test as if it were unbiased). Our integrative framework provides researchers and practitioners with a unique tool that generates numerical answers to questions such as the following: What are the anticipated consequences for bias-based selection errors of various degrees of test validity and test bias? What are the anticipated consequences for adverse impact of various degrees of test validity and test bias? From a theory point of view, our framework provides a more complete picture of the selection process by integrating 4 key concepts that have not been examined simultaneously thus far. From a practical point of view, our framework provides test developers, employers, and policy makers a broader perspective and new insights regarding practical consequences associated with various selection systems that vary on their degree of validity and bias. We present a computer program available online to perform all needed calculations.

Labels: Aguinis, Smith

Scott, Judy E.
Information Systems Management Vol. 24 Issue 2, p. 139-145

In this article, I argue that increased mobility, a continued emphasis on business process management, expanded options for the sourcing of enterprise system software, and IS maturity models are trends that will require new capabilities and skills for tomorrow's IS organization.

Labels: Scott

Gregg, Dawn G. and Walczak, Steven

IEEE Transactions on Systems, Man and Cybernetics, Part C. Vol. 37 Issue 1 pp. 109-125

The World Wide Web is an increasingly important data source for business decision making; however, extracting information from the Web remains one of the challenging issues related to Web business intelligence applications. To use heterogeneous Web data for decision making, documents containing relevant data must be located and the data of interest within the documents must be identified and extracted. Currently most automatic information extraction systems can only cope with a limited set of document formats or do not adapt well to changes in document structure, as a result, many real-world data sources with complex document structures cannot be consistently interpreted using a single information extraction system. This paper presents an adaptive information extraction system prototype that combines multiple information extraction approaches to allow more accurate and resilient data extraction for a wide variety of Web sources. The Amorphic Web information extraction system prototype can locate data of interest based on domain-knowledge or page structure, can automatically generate a wrapper for a data source, and can detect when the structure of a Web-based resource has changed and act on this to search the updated resource to locate the desired data. The prototype Amorphic information extraction system demonstrated improved information extraction accuracy when compared with traditional data extraction approaches.

Labels: Gregg, Walczak

Eckard, E. Woodrow
Explorations in Economic History Vol. 44 Issue 1, p. 131-153

This paper studies a unique 1901 data set containing prices of three products obtained from grocery stores in over 1400 cities nationwide. A striking characteristic is a high concentration of retail prices at relatively few “even” numbers. I propose a novel transactions cost explanation for this phenomenon on which existing theory is silent. In particular, grocers selected prices that simplified the task of toting up customer bills by hand and reduced related costs. As stores independently adopted this strategy across the country, prices converged to a few even numbers. Several empirical regularities for all three products are consistent with this explanation. An important implication is that preferences for computationally convenient prices would have made prices “sticky.” An independent study of price flexibility circa 1890 supports this hypothesis. The underlying data show price concentration patterns similar to the 1901 data, suggesting that the phenomenon covered a wide range of products.

Labels: Eckard

Ghosh, Biswadip and Scott, Judy E.

Information Systems Management Vol. 24, Issue 1, p. 73-84

Given the critical role of nurses as knowledge workers in a hospital environment, this study investigates the knowledge management processes and organizational enablers associated with effective knowledge management systems (KMS) for a clinical nursing setting. The interview and survey findings shed light on how to effectively design and deploy a clinical KMS in a hospital nursing environment.

Labels: Scott

O'Connor, Edward J. and Fiol, C. Marlena
Physician Executive Vol. 33 Issue 1, p. 68-70

What steps can you take as a leader to involve your people in getting these important pieces in place? Do you have to do all this yourself, or are there leadership strategies that will encourage your people to step forward and willingly carry this burden with you?

Labels: Fiol, O'Connor

Gopala, Ram D., Tripathib, Arvind K. & Walter, Zhiping D.
Decision Support Systems Vol. 42 Issue 3, p. 1366-1382

Since the advent of the Internet, email has emerged as an important new form of personal communication. The focus of this research is on commercial advertising through the email channel. We analyze the underlying economics of a business model termed admediation that facilitates effective first-contact email advertising. Admediary is a trusted third party that facilitates a mutually desirable communication between buyers and sellers via email, and operates under the ‘opt-in' mode widely supported by the consumer advocacy groups. Our analytical model examines the incentive structures for all participating entities, and derives pricing strategies, profit implications and characteristics of the email lists. We develop and model a form of price discrimination we term sequential elimination price discrimination that can be practiced via email. Our results indicate that the transactions facilitated by the admediary can create significant value whereby every participating entity realizes increased benefits. These findings underscore the potential of admediation to restore email as an effective communication media for online advertising.

Labels: Walter

GLOVER, FRED W. and KOCHENBERGER, GARY
International Journal of Information Technology & Decision Making Vol. 5 Issue 4, p. 605-609

In recent years modern methods of optimization have contributed greatly to the advances in data mining and related areas. These contributions continue today and promise to further advance the state of the art both in terms of modeling innovations and new solution methodologies. In this paper, we present a new modeling and solution methodology for unsupervised clustering. Preliminary computational experience is given to illustrate the approach. This methodology is part of our current research and offers considerable opportunity for additional investigation to be conducted by other researchers.

Labels: Kochenberger

Cascio, Wayne F.
Harvard Business Review Vol. 84 Issue 12, p. 23

This article compares Wal-Mart's Sam's Club and Costco in terms of employee benefits and wages. The author claims that managing labor costs isn't a bad idea, but stingy pay and benefits don't necessarily translate to lower costs in the long run. With 338 stores and 67,600 full-time employees, Costco is the number one wholesaler, while Sam's Club has 551 stores and 110,200 employees and is the number two wholesaler. Wages at Costco are much higher than those at Sam's, and it is also more generous with its benefits. The difference, even though Costco's practices are more expensive, is that Costco has a very low turnover and Sam's Club a high one. Therefore, the annual cost of replacing employees is nearly three times more for Sam's Club. Costco's strategy for cost containment is employee loyalty.

Labels: Cascio

Arak, Marcelle and Rosenstein, Stuart
Financial Services Review Vol. 15 Issue 4, p. 265-280

Both TIPS and Series I Bonds are adjusted for inflation, offering a real rate and an inflation adjustment. The inflation adjustment is the same on both securities, but the real portion of the interest rate on TIPS is generally much higher. Despite I Bonds' less attractive real rate, they have several features that add to their value. They may be redeemed before maturity, at par value plus accrued interest, eliminating price risk. In addition, taxes may be deferred until redemption. We estimate the value of these two features, and find that they are substantial and could potentially offset the lower real rate of I Bonds.

Labels: Arak, Rosenstein

O'Connor, Edward J. and Fiol, C. Marlena
Physician Executive Vol. 32 Issue 6, p. 78-80

The article presents the authors' views on handling individual emotional reactions to change. Individual emotional reactions to change go through several phases including naive confidence, denial, depression and informed hopefulness. It is important to understand and manage the transitions of people through these phases. After diagnosing a particular phase of emotional transition, specific actions can be taken toward the next phase of emotional transition.

Labels: Fiol, O'Connor

O'Connor, Edward J. and Fiol, C. Marlena
Physician Executive Vol. 32 Issue 6, p. 46-50

The article discusses various issues related to physician morale. According to a survey, physicians have tried to regain their autonomy in several ways. Physician attitudes and behaviors affect the cost, and quality of health services in many ways. Several clinical quality improvement initiatives launched by accreditation bodies, and government agencies are designed to address the identified quality problem.

Labels: Fiol, O'Connor

Walczak, Steven, Gregg, Dawn G. and Berrinberg, Joy

Journal of Electronic Commerce Research Vol. 7, Issue 4, p. 199-220

The purpose of this investigation is to identify factors in the decision making processes used by online auction sellers to select their online auction sales channel. Examining these decision factors will aid in creating a model of online auction seller channel evaluation mechanisms including economic and social factors and may be used by online auction services and intermediaries to maximize their market potential by increasing the perceived value of the various economic or social factors influencing seller outlet selection. An exploratory survey analysis is used to identify the components that online seller’s use for online channel selection.

Labels: Gregg, Walczak

Michael V. Mannino and Zhiping Walter
Decision Support Systems Vol. 42 Issue 1, p. 121-143

In a field study to explore influences on data warehouse refresh policies, we interviewed data warehouse administrators from 13 organizations about data warehouse details and organizational background. The dominant refresh strategy reported was daily refresh during nonbusiness hours with some deviations due to operational decision making and data source availability. As a result of the study, we developed a framework consisting of short-term and long-term influences of refresh policies along with traditional information system success variables influenced by refresh policies. The framework suggests the need for research about process design, data timeliness valuation, and optimal refresh policy design.

Labels: Mannino, Walter

Aguinis, H., & Pierce, C. A.
Applied Psychological Measurement Vol. 30, Issue 3, p. 440-442
[available at http://carbon.cudenver.edu/~haguinis/pubs.html ]

We provide a user-friendly description of a modified f 2 effect-size estimate for categorical moderator variables in multiple regression. We recommend that this modified f 2 statistic be used when the homogeneity of error variance assumption is violated. Many researchers in the social sciences may not report effect-size estimates because the tools needed to compute these estimates are not readily available. To increase researchers’ awareness of f 2 in general and to increase the accessibility of computing modified f 2 values, we also describe an on-line program that performs all computations needed and offer this program free-of-charge at the following URL: http://carbon.cudenver.edu/~haguinis/mmr/fsquared. A benefit of using this program is that, once computed, researchers are able to compare the magnitude of their modified f 2 values to values commonly observed in the social sciences as determined by Aguinis, Beaty, Boik, and Pierce's (2005) 30-year review of the size of moderating effects of categorical variables.

Labels: Aguinis

Cascio, Wayne F.
Academy of Management Perspectives Vol. 20 Issue 3, p. 26-37

Wal-Mart's emphasis on "Always low prices. Always" has made it the largest retail operation in history. However, this unrelenting mission has also created a way of doing business that draws substantial criticism regarding the company's employment practices, relationships with suppliers, and the company's impact on local economies. This paper focuses on a company that delivers low prices to consumers, but in a fundamentally different way than its competitor, Wal-Mart. That company is warehouse-retailer Costco. In the following sections we will begin by providing some background on the company, including its history, its business model, its ethical principles, core beliefs, and values. Then we will consider some typical Wall Street analysts' assessments of this approach, followed by a systematic comparison of the financial performance of Costco with that of Sam's Club, a warehouse retailer that is part of Wal-Mart.

Labels: Cascio

Aguinis, H., & Branstetter, S. A.
Journal of Management Education (In Press)
[available at http://carbon.cudenver.edu/~haguinis/pubs.html ]

We use proven cognitive and learning principles and recent developments in the field of educational psychology to teach the concept of the sampling distribution of the mean, which is arguably one of the most central concepts in inferential statistics. The proposed pedagogical approach relies on cognitive load, contiguity, and experiential learning theories and on the integration of new knowledge within previously formed knowledge structures. Thus, the proposed approach stimulates both visual and auditory learning, engages students in the process of learning through problem solving, and presents information so that it builds on existing knowledge. Results of an experiment including introductory statistics undergraduate students indicate that students exposed to the proposed theory-based pedagogical approach enhanced their learning by approximately 60%.

Labels: Aguinis

Aguinis, Herman, Sturman, M.C., & Pierce, C.A.
Organizational Research Methods (In Press)
[available at http://carbon.cudenver.edu/~haguinis/pubs.html ]

We conducted Monte Carlo simulations to compare the Hedges-Olkin (1985), Hunter-Schmidt (1990, 2004), and a refinement of the Aguinis-Pierce (1998) meta-analytic approaches for estimating moderating effects of categorical variables. The simulation examined binary moderator variables (e.g., gender--male, female; ethnicity--majority, minority). We compared the three meta-analytic methods in terms of their point estimation accuracy as well as Type I and Type II error rates. Results provide guidelines to help researchers choose among the three meta-analytic techniques based on theory (i.e., exploratory vs. confirmatory research) and research design considerations (i.e., degree of range restriction and measurement error).

Labels: Aguinis

Lewis, Mark, Kochenberger, Gary & Alidaee, Bahram
Computers & Operations Research (In Press)

The set-partitioning problem (SPP) is widely known for both its application potential and its computational challenge. This NP-hard problem is known to pose considerable difficulty for classical solution methods such as those based on LP technologies. In recent years, the unconstrained binary quadratic program has proven to perform well as a unified modeling and solution framework for a variety of IP problems. In this paper we illustrate how this unified framework can be applied to SPP. Computational experience is presented, illustrating the attractiveness of the approach.

Labels: Kochenberger

Corley, Kevin G., Harquail, Celia V., Pratt, Michael G., Glynn, Mary Ann, Fiol, C. Marlene, & Hatch, Mary Jo
Journal of Management Inquiry Vol. 15, Issue 2, p. 85-99

In this article, the authors reflect on the past two decades of research on organizational identity, looking to its history and to its future. They do not provide a review of the literature, nor do they promote a particular perspective on the concept. Instead, they advocate pluralism in studying organizational identity while encouraging clarity and transparency in the articulation of definitions and core theoretical suppositions. Believing there is no one best approach to the study of organizational identity, their intent is to establish a reference point that can orient future work on organizational identity. They focus on three questions they feel are critical: What is the nomological net that embeds organizational identity? Is organizational identity "real" (or simply metaphorical)? and How do we define and conceptualize organizational identity? Last, they try to anticipate organizational identity issues on the horizon to suggest future directions for theory and research.

Labels: Fiol

Diefendorff, James M., Richard, Erin M., & Gosserand, Robin H.
Personnel Psychology Vol. 59, Issue 2, p. 365-393

The hesitation dimension of action-state orientation refers to the behavioral capacity to start action on tasks. In this study, job characteristics (autonomy and routineness) and job attitudes (satisfaction and involvement) were examined as moderators of the relation between hesitation and supervisor ratings of work behaviors (overall job performance and self-management performance) in 2 different samples. In both samples, routineness moderated the hesitation and self-management performance relation such that individuals low in hesitation performed better than individuals high in hesitation when routineness was low, but no differences in performance were observed when routineness was high. In addition, job satisfaction and job involvement were significant moderators of the relation between hesitation and self-management performance, with individuals low in hesitation performing better than individuals high in hesitation when satisfaction or involvement was low, but no differences in performance were observed when satisfaction or involvement was high.

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Gregg, Dawn G. & Walczak, Steven

Communications of the ACM Vol. 49, Issue 5, p. 78-84

Extracting information from Web pages for internal applications is difficult. An effective Web information extraction system needs to interpret a wide variety of HTML pages and adapt to changes without breaking. An information extraction system should recognize different Web page structures and act on this knowledge to modify the information extraction techniques employed. In addition, the system should be customizable for a variety of domains and data-object types. This paper examines the characteristics of effective Web information extraction systems. This paper also presents a prototype adaptive Web information extraction system for building intelligent systems for mining information from Web pages.

Labels: Gregg, Walczak

O'Connor, Edward J.
Physician Executive Vol. 32, Issue 3, p. 76-78

The article discusses some organizational systems and structures that would support physicians executives and medical staff in implementing changes. The authors argue that traditional relics may hinder changes required in order to meet the demands of today's environment. In order to respond effectively to these demands, health care organizations must update tools and mechanisms such as budgeting, feedback, reward/compensation, clinical guidelines, and employee selection, training and retention.

Labels: O'Connor