Showing papers by "Boston College published in 2004"

Review: information technology and organizational performance: an integrative model of it business value

Abstract: Despite the importance to researchers, managers, and policy makers of how information technology (IT) contributes to organizational performance, there is uncertainty and debate about what we know and don't know. A review of the literature reveals that studies examining the association between information technology and organizational performance are divergent in how they conceptualize key constructs and their interrelationships. We develop a model of IT business value based on the resource-based view of the firm that integrates the various strands of research into a single framework. We apply the integrative model to synthesize what is known about IT business value and guide future research by developing propositions and suggesting a research agenda. A principal finding is that IT is valuable, but the extent and dimensions are dependent upon internal and external factors, including complementary organizational resources of the firm and its trading partners, as well as the competitive and macro environment. Our analysis provides a blueprint to guide future research and facilitate knowledge accumulation and creation concerning the organizational performance impacts of information technology.

Resilient Individuals Use Positive Emotions to Bounce Back From Negative Emotional Experiences.

Abstract: Theory indicates that resilient individuals “bounce back” from stressful experiences quickly and effectively. Few studies, however, have provided empirical evidence for this theory. The broaden-and-build theory of positive emotions (B. L. Fredrickson, 1998, 2001) is used as a framework for understanding psychological resilience. The authors used a multimethod approach in 3 studies to predict that resilient people use positive emotions to rebound from, and find positive meaning in, stressful encounters. Mediational analyses revealed that the experience of positive emotions contributed, in part, to participants’ abilities to achieve efficient emotion regulation, demonstrated by accelerated cardiovascular recovery from negative emotional arousal (Studies 1 and 2) and by finding positive meaning in negative circumstances (Study 3). Implications for research on resilience and positive emotions are discussed.

Learning to detect natural image boundaries using local brightness, color, and texture cues

Abstract: The goal of this work is to accurately detect and localize boundaries in natural scenes using local image measurements. We formulate features that respond to characteristic changes in brightness, color, and texture associated with natural boundaries. In order to combine the information from these features in an optimal way, we train a classifier using human labeled images as ground truth. The output of this classifier provides the posterior probability of a boundary at each image location and orientation. We present precision-recall curves showing that the resulting detector significantly outperforms existing approaches. Our two main results are 1) that cue combination can be performed adequately with a simple linear model and 2) that a proper, explicit treatment of texture is required to detect boundaries in natural images.

Return on Marketing: Using Customer Equity to Focus Marketing Strategy

Abstract: The authors present a unified strategic framework that enables competing marketing strategy options to be traded off on the basis of projected financial return, which is operationalized as the change in a firm’s customer equity relative to the incremental expenditure necessary to produce the change. The change in the firm’s customer equity is the change in its current and future customers’ lifetime values, summed across all customers in the industry. Each customer’s lifetime value results from the frequency of category purchases, average quantity of purchase, and brand-switching patterns combined with the firm’s contribution margin. The brand-switching matrix can be estimated from either longitudinal panel data or cross-sectional survey data, using a logit choice model. Firms can analyze drivers that have the greatest impact, compare the drivers’ performance with that of competitors’ drivers, and project return on investment from improvements in the drivers. To demonstrate how the approach can be implemented in a specific corporate setting and to show the methods used to test and validate the model, the authors illustrate a detailed application of the approach by using data from the airline industry. Their framework enables what-if evaluation of marketing return on investment, which can include such criteria as return on quality, return on advertising, return on loyalty programs, and even return on corporate citizenship, given a particular shift in customer perceptions. This enables the firm to focus marketing efforts on strategic initiatives that generate the greatest return.

Psychological Resilience and Positive Emotional Granularity: Examining the Benefits of Positive Emotions on Coping and Health

Abstract: For centuries, folk theory has promoted the idea that positive emotions are good for your health. Accumulating empirical evidence is providing support for this anecdotal wisdom. We use the broaden-and-build theory of positive emotions (Fredrickson, 1998; 2001) as a framework to demonstrate that positive emotions contribute to psychological and physical well-being via more effective coping. We argue that the health benefits advanced by positive emotions may be instantiated in certain traits that are characterized by the experience of positive emotion. Towards this end, we examine individual differences in psychological resilience (the ability to bounce back from negative events by using positive emotions to cope) and positive emotional granularity (the tendency to represent experiences of positive emotion with precision and specificity). Individual differences in these traits are examined in two studies, one using psychophysiological evidence, the second using evidence from experience sampling, to demonstrate that positive emotions play a crucial role in enhancing coping resources in the face of negative events. Implications for research on coping and health are discussed.

Intellectual Capital Profiles: An Examination of Investments and Returns

Abstract: Using data collected from executives in 208 organizations, this study takes a configurational approach to examine how human, social, and organizational capital coexist to form distinct intellectual capital profiles across organizations. We then examine how investments in human resource management (HRM), information technology (IT), and research and development (R&D) differ across these intellectual capital profiles and investigate differences in financial returns and Tobin's q between the profiles. Results indicate that a relatively small group of superior performing organizations exhibit high levels of human, social, and organizational capital. Most firms, however, tend to focus primarily on only one form of intellectual capital, and a small group of underperforming organizations have very low levels of all three types of intellectual capital. At a general level, HRM and IT investments appear to influence intellectual capital development more than R&D investments. More specifically, HRM investments tend to be higher in firms with profiles high in human and social capital, while IT investments are stronger in firms with profiles high in social capital. Further, HRM, IT, and R&D investments are all very high in the group of superior performing organizations that have high levels of human, social, and organizational capital.

Particle Morphology and Density Characterization by Combined Mobility and Aerodynamic Diameter Measurements. Part 1: Theory

Abstract: Different on-line submicron particle sizing techniques report different “equivalent diameters.” For example, differential mobility analyzers (DMAs) report electrical mobility diameter (dm ), while a number of recently developed instruments (such as the Aerodyne aerosol mass spectrometer, or AMS) measure vacuum aerodynamic diameter (dva ). Particle density and physical morphology (shape) have important effects on diameter measurements. Here a framework is presented for combining the information content of different equivalent diameter measurements into a single coherent mathematical description of the particles. We first present a review of the mathematical formulations used in the literature and their relationships. We then show that combining dm and dva measurements for the same particle population allows the placing of constraints on particle density, dynamic shape factor (x), and fraction of internal void space. The amount of information that can be deduced from the combination of dm and dm measurement...

Individual differences in working memory capacity and dual-process theories of the mind.

Abstract: Dual-process theories of the mind are ubiquitous in psychology. A central principle of these theories is that behavior is determined by the interplay of automatic and controlled processing. In this article, the authors examine individual differences in the capacity to control attention as a major contributor to differences in working memory capacity (WMC). The authors discuss the enormous implications of this individual difference for a host of dual-process theories in social, personality, cognitive, and clinical psychology. In addition, the authors propose several new areas of investigation that derive directly from applying the concept of WMC to dual-process theories of the mind.

The Theoretical Underpinnings of Customer Asset Management: A Framework and Propositions for Future Research

Abstract: Most research in customer asset management has focused on specific aspects of the value of the customer to the company. The purpose of this article is to propose an integrated framework, called CUSAMS (customer asset management of services), that enables service organizations (1) to make a comprehensive assessment of the value of their customer assets and (2) to understand the influence of marketing instruments on them. The foundation of the CUSAMS framework is a careful specification of key customer behaviors that reflect the length, depth, and breadth of the customer-service organization relationship: duration, usage, and cross-buying. This framework is the starting point for a set of propositions regarding how marketing instruments influence customer behavior within the relationship, thereby influencing the value of the customer asset. The framework and propositions provide the impetus for a research agenda that identifies critical issues in customer asset management.

Qualitative Metasynthesis: Reflections on Methodological Orientation and Ideological Agenda

Abstract: In an era of pressure toward evidence-based health care, we are witnessing a new enthusiasm for qualitative metasynthesis as an enterprise distinct from conventional literature reviews, secondary analyses, and the many other scholarly endeavors with which it is sometimes confused. This article represents the reflections of five scholars, each ofwhom has authored a distinct qualitative metasynthesis strategy. By providing the reader a glimpse into the tradition of their various qualitative metasynthesis projects, these authors offer a finely nuanced examination of the tensions between comparison and integration, deconstruction and synthesis, and reporting and integration within the metasynthesis endeavor. In so doing, they account for many of the current confusions about representation and generalization within the products of these inquiries. Through understanding the bases of their unique angles of vision, the reader is invited to engage in their commitment to scholarly integrity and intellectual credibility in this emerging methodological challenge.

The corporate governance mosaic and financial reporting quality

Abstract: The purpose of this paper is to review research on corporate governance and its impact on financial reporting quality This review will serve three purposes: (1) to suggest a corporate governance mosaic(ie, the interactions among the actors and institutions that affect corporate governance) that encompasses a broader view of governance than has been considered in prior accounting research; (2) to provide an overview of the principal findings of prior research; and (3) to identify important gaps in the research that represent promising avenues for future study

Paternal postpartum depression, its relationship to maternal postpartum depression, and implications for family health

Abstract: Background. Much attention has been paid to the problem of postpartum depression in women. However, there is some indication that men also experience depression after the birth of a child, and that paternal depression is linked to maternal depression. Aims. The purpose of this integrative review was to examine current knowledge about postpartum depression in fathers. Specific aims were (1) to examine the incidence of paternal depression in the first year after the birth of a child, (2) to identify the characteristics and predictors of paternal postpartum depression, (3) to describe the relationship between maternal and paternal postpartum depression, and (4) to discuss the influence of paternal depression on the family and infant. Methods. A literature search from 1980 to 2002 was carried out using the CINAHL, PsychInfo, and Medline electronic databases. Twenty research studies were identified that included incidence rates of paternal depression during the first year postpartum. These were further examined and synthesized regarding onset, severity, duration, and predictors of paternal depressive symptoms, and for information about the relationship between maternal and paternal depression. Findings. During the first postpartum year, the incidence of paternal depression ranged from 1·2% to 25·5% in community samples, and from 24% to 50% among men whose partners were experiencing postpartum depression. Maternal depression was identified as the strongest predictor of paternal depression during the postpartum period. The implications of parental depression for family health were discussed. Conclusions. Postpartum depression in men is a significant problem. The strong correlation of paternal postpartum depression with maternal postpartum depression has important implications for family health and well-being. Consideration of postpartum depression in fathers as well as mothers, and consideration of co-occurrence of depression in couples, is an important next step in research and practice involving childbearing families.

Parallel Universes: Companies, Academics, and the Progress of Corporate Citizenship

Abstract: No abstract available.

Globalisation and the university: Myths and realities in an unequal world

Abstract: Much has been said about the impact of globalisation on higher education. Some have argued that globalisation, the Internet and the scientific community will level the playing field in the new age of knowledge interdependence. Others claim that globalisation means both worldwide inequality and the McDonaldisation of the university. It is argued that all of the contemporary pressures on higher education, from the pressures of massification to the growth of the private sector, are the results of globalisation. There is a grain of truth in all of these hypotheses ‐ and a good deal of misinterpretation as well. The purpose of this essay is to “unpack” the realities of globalisation and internationalisation in higher education and to highlight some of the ways in which globalisation affects the university. Of special interest here is how globalisation is affecting higher education in developing countries ‐ the nations that will experience the bulk of higher education expansion in the coming decades.

African higher education: Challenges for the 21st century

Abstract: African higher education, atthe beginning of the new millennium, facesunprecedented challenges. Not only is thedemand for access unstoppable, especially inthe context of Africa's traditionally lowpostsecondary attendance levels, but highereducation is recognized as a key force formodernization and development. Africa'sacademic institutions face obstacles inproviding the education, research, and serviceneeded if the continent is to advance.Generalizing about a continent as large anddiverse as Africa is difficult. Yet there aresome common elements – and there are certainlysome common challenges. In our discussion, weare not generally optimistic either inanalyzing the current reality in much of Africaor in pointing to future prospects. The fact isthat African universities currently function invery difficult circumstances, both in terms ofthe social, economic, and political problemsfacing the continent and in the context ofglobalization, and the road to future successwill not be an easy one.

Manganese clusters with relevance to photosystem II.

Abstract: ion model is not a true H-abstracting process but rather a special case of proton-coupled electron transfer where reduction of YZ by the Mn4 cluster occurs with the proton emanating from solvent water. These two theories will now be described briefly. A hydrogen atom abstraction process by the YZ residue in conjunction with a dimer-of-dimers structural template has led to an interesting hypothesis wherein an O atom is proposed as a terminal ligand to Mn (see Figure 8 (top)).175,188 The Clion is proposed to migrate in S1 to S2 and S2 to S3 state transitions while YZ serves as the H atom abstractor and Ca2+ ion binds to Clin the lower S states. In another proposal two dinuclear Mn complexes perform diverse functions: one oxidizes H2O to peroxide while the other converts peroxide to water.16,189-191 The final O-O bond forming step in the S4 state is predicted to result from attack of the hydroxo group bound to Ca2+ to a strongly electrophilic MnVdO species. In a similar hypothesis, a Clbridging between a Mn and a Ca2+ is responsible for modulating the nucleophilic attack of the hydroxide ion.181,192 This was first predicted from mass spectrometric studies.176 The product of this step has been argued to be similar to the ferric hydroperoxide in oxyhemerythrin. Oxygen release is envisioned in a manner similar to that of oxyhemerythrin concomitant with reduction of Mn and protonation of μ-oxo bridges.192 On the basis of XAS and EPR data, another mechanism incorporating a “C-shaped” cluster has also been suggested recently involving one redox-active Mn per [Mn2(μ-O)2] dimeric moiety (see Figure 8 (bottom)).17,193,194 Here, the O-O bond is formed between an oxyl radical and a μ-oxo atom. A hybrid density functional theory has been utilized to put forward a triangular Mn moiety closely coupled by μ-oxo groups as a potential model for the WO site. The previously suggested oxyl radical mechanism14 has been reexamined in this work with an oxyl radical placed in a bridging fashion between two Mn atoms. Consistent with earlier studies, only one Mn is redox active in this model and the Ca2+ ion has been shown as playing the role of a bridging metal Manganese Clusters with Relevance to Photosystem II Chemical Reviews, 2004, Vol. 104, No. 9 3991

The Role of Affective Experience in Work Motivation

Abstract: Based on psychological and neurobiological theories of core affective experience, we identify a set of direct and indirect paths through which affective feelings at work affect three dimensions of behavioral outcomes: direction, intensity, and persistence. First, affective experience may influence these behavioral outcomes indirectly by affecting goal level and goal commitment, as well as three key judgment components of work motivation: expectancy judgments, utility judgments, and progress judgments. Second, affective experience may also affect these behavioral outcomes directly. We discuss implications of our model.

Going Beyond the Dominant Paradigm for Information Technology Innovation Research: Emerging Concepts and Methods ∗

Abstract: Research on information technology (IT) innovation is concerned with identifying the factors that facilitate or hinder the adoption and diffusion of new IT-based processes or products. Most of this research has been conducted within the confines of a dominant paradigm wherein innovations are assumed to be beneficial, and organizations that have greater innovation-related needs and abilities are expected to exhibit a greater amount of innovative activity. This essay suggests that the dominant paradigm may be reaching the point of diminishing returns as a framework for supporting ground-breaking research, and urges researchers to adopt a more innovative approach to the study of IT innovation itself. Toward this end, I present seven opportunities for conducting new kinds of research that go beyond the dominant paradigm.

Training Counseling Psychologists as Social Justice Agents Feminist and Multicultural Principles in Action

Abstract: Despite recent calls for counseling psychology to embrace social justice-oriented work, there has been little discussion about what such work actually looks like. The first part of this article derives a set of principles from feminist and multicultural counseling theories that counseling psychologists should consider as they engage in social justice work. These include (a) ongoing self-examination,(b) sharing power, (c) giving voice, (d) facilitating consciousness raising, (e) building on strengths, and(f) leaving clients the tools to work toward social change. The second part of the article describes a program designed to integrate social justice work into the core curriculum of the Boston College doctoral program. The authors discuss ways in which the above principles have shaped students; activities, and some of the ethical dilemmas that have emerged. Finally, the article under-scores professional obstacles that counseling psychologists doing social justice work are likely to face, and offers recommen...

Real Options and IT Platform Adoption: Implications for Theory and Practice

Abstract: The decision processes surrounding investments in innovative information technology (IT) platforms are complicated by uncertainty about expected payoffs and irreversibilities in the costs of implementation. When uncertainty and irreversibility are high, concepts from real options should be used to properly structure the evaluation and management of investment opportunities, and thereby capture the value of managerial flexibility. However, while innovation researchers have posited that option value can influence the motivations of early adopters, and options researchers have identified emerging IT as a promising area for application of options valuation techniques, there has yet to be a systematic theoretical integration of work on IT innovation and real options.This paper seeks to fill this gap by developing a model of the determinants of option value associated with investments in innovative IT platforms. In so doing, the model addresses a central question in the innovation field: When should a firm take a lead role in innovation with emerging technologies? The analysis begins with an explanation of real options analysis and how it differs from conventional approaches for evaluating new technologies. Then a set of 12 factors--drawn from 4 complementary perspectives on organizational innovation (technology strategy, organizational learning, innovation bandwagons, and technology adaptation)--is synthesized into a model of the option value of IT platform investments. Rationales are provided to explain the direct effects of these factors on option value, and selected interactions among the factors are also considered. Finally, the implications of the model are presented in three areas: predicting IT platform initiation and adoption, valuing IT platform options, and managing IT platform implementation.

Does Disclosure Deter or Trigger Litigation

Abstract: Securities litigation poses large costs to firms. The risk of litigation is heightened when firms have unexpectedly large earnings disappointments. Previous literature presents mixed evidence on whether voluntary disclosure of the bad news prior to regularly scheduled earnings announcements deters or triggers litigation. We show that the counterintuitive finding in prior literature that disclosure triggers litigation could be driven by the endogeneity between disclosure and litigation. Using a simultaneous equations methodology, we find no evidence that disclosure triggers litigation. In fact, consistent with economic arguments, our evidence suggests that disclosure potentially deters certain types of litigation.

Child Care and Low‐Income Children's Development: Direct and Moderated Effects

Abstract: A large literature has documented the influence of child care on young children's development, but few studies have examined low-income children in community care arrangements. Using data from Welfare, Children, and Families: A Three-City Study (N = 204), this study examined the influence of child care quality and the extent of care on low-income children's (ages 2-4 years) cognitive and socioemotional development over time. Higher levels of child care quality were modestly associated with improvements in children's socioemotional development, and extensive hours in child care were linked to increases in children's quantitative skills and decreases in behavior problems. Analyses suggest that child care quality may be particularly salient for subgroups of children from low-income families.

Loss of C. elegans BBS-7 and BBS-8 protein function results in cilia defects and compromised intraflagellar transport

Abstract: Bardet-Biedl syndrome (BBS) is a genetically heterogeneous developmental disorder whose molecular basis is largely unknown. Here, we show that mutations in the Caenorhabditis elegans bbs-7 and bbs-8 genes cause structural and functional defects in cilia. C. elegans BBS proteins localize predominantly at the base of cilia, and like proteins involved in intraflagellar transport (IFT), a process necessary for cilia biogenesis and maintenance, move bidirectionally along the ciliary axoneme. Importantly, we demonstrate that BBS-7 and BBS-8 are required for the normal localization/motility of the IFT proteins OSM-5/Polaris and CHE-11, and to a notably lesser extent, CHE-2. We propose that BBS proteins play important, selective roles in the assembly and/or function of IFT particle components. Our findings also suggest that some of the cardinal and secondary symptoms of BBS, such as obesity, diabetes, cardiomyopathy, and learning defects may result from cilia dysfunction.

In search of peptide-based catalysts for asymmetric organic synthesis.

Abstract: The discovery of short peptide sequences that function as asymmetric catalysts for a variety of reactions is documented. The evolution of the project from an exercise in rational design to an endeavor that combines combinatorial screening with various mechanism-based experiments is presented. The specific development of catalysts for enantioselective acylation, phosphorylation, conjugate addition, and Morita-Baylis-Hillman reactions is described.