Showing papers by "York University published in 2004"

Review: the resource-based view and information systems research: review, extension, and suggestions for future research

Abstract: Information systems researchers have a long tradition of drawing on theories from disciplines such as economics, computer science, psychology, and general management and using them in their own research. Because of this, the information systems field has become a rich tapestry of theoretical and conceptual foundations. As new theories are brought into the field, particularly theories that have become dominant in other areas, there may be a benefit in pausing to assess their use and contribution in an IS context. The purpose of this paper is to explore and critically evaluate use of the resource-based view of the firm (RBV) by IS researchers. The paper provides a brief review of resource-based theory and then suggests extensions to make the RBV more useful for empirical IS research. First, a typology of key IS resources is presented, and these are then described using six traditional resource attributes. Second, we emphasize the particular importance of looking at both resource complementarity and moderating factors when studying IS resource effects on firm performance. Finally, we discuss three considerations that IS researchers need to address when using the RBV empirically. Eight sets of propositions are advanced to help guide future research.

Bilingualism, Aging, and Cognitive Control: Evidence From the Simon Task.

Abstract: Previous work has shown that bilingualism is associated with more effective controlled processing in children; the assumption is that the constant management of 2 competing languages enhances executive functions (E. Bialystok, 2001). The present research attempted to determine whether this bilingual advantage persists for adults and whether bilingualism attenuates the negative effects of aging on cognitive control in older adults. Three studies are reported that compared the performance of monolingual and bilingual middle-aged and older adults on the Simon task. Bilingualism was associated with smaller Simon effect costs for both age groups; bilingual participants also responded more rapidly to conditions that placed greater demands on working memory. In all cases the bilingual advantage was greater for older participants. It appears, therefore, that controlled processing is carried out more effectively by bilinguals and that bilingualism helps to offset age-related losses in certain executive processes.

Attention and inhibition in bilingual children: evidence from the dimensional change card sort task

Abstract: In a previous study, a bilingual advantage for preschool children in solving the dimensional change card sort task was attributed to superiority in inhibition of attention (Bialystok, 1999). However, the task includes difficult representational demands to encode and interpret the task stimuli, and bilinguals may also have profited from superior representational abilities. This possibility is examined in three studies. In Study 1, bilinguals outperformed monolinguals on versions of the problem containing moderate representational demands but not on a more demanding condition. Studies 2 and 3 demonstrated that bilingual children were more skilled than monolinguals when the target dimensions were perceptual features of the stimulus and that the two groups were equivalent when the target dimensions were semantic features. The conclusions are that bilinguals have better inhibitory control for ignoring perceptual information than monolinguals do but are not more skilled in representation, confirming the results of the original study. The results also identify the ability to ignore an obsolete display feature as the critical difficulty in solving this task.

The Complex Resource-Based View: Implications for Theory and Practice in Strategic Human Resource Management

Abstract: I consider the implications for research and practice in strategic human resource management (SHRM) of a complex, living-systems extension of the resource-based view (RBV). I do so by demonstrating that concepts from complexity align well with the RBV, and I extend the RBV by considering critical but difficult aspects commonly identified in the RBV strategy literature. An integrated framework for SHRM is presented, allowing an application of complexity principles at the appropriate level of abstraction in the HR system.

High dynamic range display systems

Abstract: The dynamic range of many real-world environments exceeds the capabilities of current display technology by several orders of magnitude. In this paper we discuss the design of two different display systems that are capable of displaying images with a dynamic range much more similar to that encountered in the real world. The first display system is based on a combination of an LCD panel and a DLP projector, and can be built from off-the-shelf components. While this design is feasible in a lab setting, the second display system, which relies on a custom-built LED panel instead of the projector, is more suitable for usual office workspaces and commercial applications. We describe the design of both systems as well as the software issues that arise. We also discuss the advantages and disadvantages of the two designs and potential applications for both systems.

Uncertainty, Opportunism and Governance: The Effects of Volatility and Ambiguity on Formal and Relational Contracting

Abstract: Volatility and ambiguity are generally thought to create exchange situations more conducive towards opportunism. We examine the effectiveness of contractual and relational governance in constraining opportunism under volatility and ambiguity. We hypothesize that relational contracts will be robust to volatility but not ambiguity, whereas formal contracts will be robust to ambiguity but not volatility. The hypotheses are supported using data from 125 interorganizational relationships involving R&D for new product development. Our findings suggest that formal and relational contracts each may have advantages and disadvantages relative to the other in specific situations, so that they are not simply substitutes. The results have important implications for transaction cost and relational contracting theory, and challenge the view that relational contracts are not so susceptible to opportunism. A revised comparative governance schema is theorized for future research.

Detection of oxygen and carbon in the hydrodynamically escaping atmosphere of the extrasolar planet HD209458b

Abstract: Four transits of the planet orbiting the star HD209458 were observed with the STIS spectrograph on board HST. The wavelength domain (1180-1710A) includes HI as well as CI, CII, CIV, NV, OI, SI, SiII, SiIII and SiIV lines. During the transits, absorptions are detected in HI, OI and CII (5+/-2%, 13+/-4.5% and 7.5+/-3.5%, respectively). No absorptions are detected for other lines. The 5% mean absorption over the whole HI Lyman alpha line is consistent with the previous detection at higher resolution (Vidal-Madjar et al. 2003). The absorption depths in OI and CII show that oxygen and carbon are present in the extended upper atmosphere of HD209458b. These species must be carried out up to the Roche lobe and beyond, most likely in a state of hydrodynamic escape.

Inventory Management with Asset-Based Financing

Abstract: Most of the traditional models in production and inventory control ignore the financial states of an organization and can lead to infeasible practices in real systems. This paper is the first attempt to incorporate asset-based financing into production decisions. Instead of setting a known, exogenously determined budgetary constraint as most existing models suggest, we model the available cash in each period as a function of assets and liabilities that may be updated periodically according to the dynamics of the production activities. Furthermore, our models allow different interest rates on cash balance and outstanding loans, which is an enhancement over most traditional models in that inventory financed by a loan may be more expensive than that by out-of-pocket cash. We demonstrate the importance of joint consideration of production and financing decisions in a start-up setting in which the ability to grow the firm is mainly constrained by its limited capital and dependence on bank financing. We then explain the motivation for asset-based financing by examining the decision making at a bank and a set of retailers in a newsvendor setting.

Rigidity, computation, and randomization in network localization

Abstract: We provide a theoretical foundation for the problem of network localization in which some nodes know their locations and other nodes determine their locations by measuring the distances to their neighbors. We construct grounded graphs to model network localization and apply graph rigidity theory to test the conditions for unique localizability and to construct uniquely localizable networks. We further study the computational complexity of network localization and investigate a subclass of grounded graphs where localization can be computed efficiently. We conclude with a discussion of localization in sensor networks where the sensors are placed randomly.

Customer Knowledge Development: Antecedents and Impact on New Product Performance

Abstract: By enhancing the fit between new product features and customer preferences, the customer knowledge development process fosters new product success. Despite this significant benefit, there is considerable variance in the extent to which firms engage in this process in their new product development projects. This is because not all firms can meet the resource, strategic flexibility, and motivational requirements of the process. In this research, the authors develop a nomological network wherein they identify (1) the organizational actions that enable effective implementation of the customer knowledge development process, (2) the characteristics of new product development projects that moderate the effects of these actions, and (3) the outcomes that are generated by the process. The results from a survey of 165 marketing managers who had recently participated in new product development projects provide substantial support for the nomological network. The authors explore the theoretical and manageria...

Impaired disengagement of attention in young children with autism

Abstract: Background: The present study examined the disengage and shift operations of visual attention in young children with autism. Methods: For this purpose, we used a simple visual orienting task that is thought to engage attention automatically. Once attention was first engaged on a central fixation stimulus, a second stimulus was presented on either side, either simultaneously or successively. Latency to begin an eye movement to the peripheral stimulus served as the main dependent measure. The two stimulus conditions (simultaneous and successive) provided independent measures of disengaging and shifting attention, respectively. Performance of children with autism was compared to that of children with Down syndrome and a normal group. Results: The main finding was that relative to both comparison groups, children with autism had marked difficulty in disengaging attention. Indeed, on 20% of trials they remained fixated on the first of two competing stimuli for the entire 8-second trial duration. Evidence is also provided for a more subtle problem in executing rapid shifts of attention. Conclusions: Our findings on disengagement in autism parallel those reported in normal 2month-olds, in whom attention has been described as ‘obligatory’. Discussion focuses on the potential role of general versus domain-specific processes in producing some of the core features of autism.

Prevalence and correlates of successful transfer from pediatric to adult health care among a cohort of young adults with complex congenital heart defects.

Abstract: Objectives. More than 85% of children born today with chronic medical conditions will live to adulthood, and many should transfer from pediatric to adult health care. The numbers of adults with congenital heart defects (CHDs) are increasing rapidly. Current guidelines recommend that just over half of adult CHD patients should be seen every 12 to 24 months by a cardiologist with specific CHD expertise at a regional CHD center, because they are at risk for serious complications (eg, reoperation and/or arrhythmias) and premature mortality. The present study aimed to determine the percent of young adults with CHDs who successfully transferred from pediatric to adult care and examine correlates of successful transfer. Design. Cross-sectional study with prevalence data from an entire cohort. Setting and Patients. All patients ( n = 360) aged 19 to 21 years with complex CHDs who, according to current practice guidelines, should be seen annually at a specialized adult CHD center were identified from the database of the cardiology program at the Hospital for Sick Children in Toronto, Canada, a pediatric tertiary care center. Of these patients, 234 completed measures about health beliefs, health behaviors, and medical care since age 18 years. Main Outcome Measure. All 15 specialized adult CHD centers in Canada formed the Canadian Adult Congenital Heart (CACH) Network. Attendance for at least 1 follow-up appointment at a CACH center before the age of 22 years was ascertained for all eligible patients. Attendance at a CACH center provides a clear criterion for successful transfer. Results. In the total cohort, 47% (95% confidence interval [CI]: 42–52) had transferred successfully to adult care. There was no difference in rates of successful transfer between patients consenting to complete questionnaires (48%) and those who declined (47%). More than one quarter (27%) of the patients reported having had no cardiac appointments since 18 years. In multivariate analyses of the entire cohort, successful transfer was significantly associated with more pediatric cardiovascular surgeries (odds ratio [OR]: 2.47; 95% CI: 1.40–4.37), older age at last visit to the Hospital for Sick Children (OR: 1.29; 95% CI: 1.10–1.51), and documented recommendations in the medical chart for follow-up at a CACH center. In multivariate analyses of the patients completing questionnaires, successful transfer was significantly related to documented recommendations and patient beliefs that adult CHD care should be at a CACH center (OR: 3.64; 95% CI: 1.34–9.90). Comorbid conditions (OR: 3.13; 95% CI: 1.13–8.67), not using substances (eg, binge drinking; OR: 0.18; 95% CI: 0.07–0.50), using dental antibiotic prophylaxis (OR: 4.23; 95% CI: 1.48–12.06), and attending cardiac appointments without parents or siblings (OR: 6.59; 95% CI: 1.61–27.00) also correlated with successful transfer. Conclusions. This is the first study to document the percent of young adults with a chronic illness who successfully transfer to adult care in a timely manner. Patients were from an entire birth cohort from the largest pediatric cardiac center in Canada, and outcome data were obtained on all eligible patients. Similar data should be obtained for other chronic illnesses. There is need for considerable improvement in the numbers of young adults with CHDs who successfully transfer to adult care. At-risk adolescents with CHDs should begin the transition process before their teens, should be educated in the importance of antibiotic prophylaxis, should be contacted if a follow-up appointment is missed, and should be directed to a specific CHD cardiologist or program, with the planned timing being stated explicitly. Adult care needs to be discussed in the pediatric setting, and patients must acquire appropriate beliefs about adult care well before transfer. Developmentally appropriate, staged discussions involving the patient, with and without parents, throughout adolescence may help patients acquire these beliefs and an understanding of the need for ongoing care. Improved continuity of pediatric care and provision of clear details for adult follow-up might be sufficient to cause substantive improvements in successful transfer. An understanding of why patients drop out of pediatric care may be needed to improve the continuity of care throughout adolescence. Almost one quarter of the patients believed adult care should be somewhere other than at a CACH center despite opposite recommendations. For these patients, a single discussion of adult care during the final pediatric visit may be too little, too late. In addition to earlier discussions, multiple mechanisms such as referral letters and transition clinics are needed. Similarly, patients engaging in multiple risky or poor health behaviors such as substance use may need more intensive programs to make substantial changes in these behaviors, which hopefully would lead to successful transfer. Overall, these data support the view that transition to adult care (a planned process of discussing and preparing for transfer to an adult health center) is important and should begin well before patients are transferred. The future health of adults with chronic conditions may depend on our ability to make these changes.

Attention and the subjective expansion of time.

Abstract: During brief, dangerous events, such as car accidents and robberies, many people report that events seem to pass in slow motion, as if time had slowed down. We have measured a similar, although less dramatic, effect in response to unexpected, nonthreatening events. We attribute the subjective expansion of time to the engagement of attention and its influence on the amount of perceptual information processed. We term the effect time's subjective expansion (TSE) and examine here the objective temporal dynamics of these distortions. When a series of stimuli are shown in succession, the low-probability oddball stimulus in the series tends to last subjectively longer than the high-probability stimulus even when they last the same objective duration. In particular, (1) there is a latency of at least 120 msec between stimulus onset and the onset of TSE, which may be preceded by subjective temporal contraction; (2) there is a peak in TSE at which subjective time is particularly distorted at a latency of 225 msec after stimulus onset; and (3) the temporal dynamics of TSE are approximately the same in the visual and the auditory domains. Two control experiments (in which the methods of magnitude estimation and stimulus reproduction were used) replicated the temporal dynamics of TSE revealed by the method of constant stimuli, although the initial peak was not apparent with these methods. In addition, a third, control experiment (in which the method of single stimuli was used) showed that TSE in the visual domain can occur because of semantic novelty, rather than image novelty per se. Overall, the results support the view that attentional orienting underlies distortions in perceived duration.

Neuroanatomical correlates of aesthetic preference for paintings.

Abstract: A study was conducted to determine the neuroanatomical correlates of aesthetic preference for paintings using fMRI. Subjects were shown representational and abstract paintings in different formats (original, altered, filtered), and instructed to rate them on aesthetic preference. Our primary results demonstrated that activation in right caudate nucleus decreased in response to decreasing preference, and that activation in bilateral occipital gyri, left cingulate sulcus, and bilateral fusiform gyri increased in response to increasing preference. We conclude that the differential patterns of activation observed in the aforementioned structures in response to aesthetic preference are specific examples of their roles in evaluating reward-based stimuli that vary in emotional valence.

The neurotic citizen

Abstract: Over the last three decades we have witnessed the birth of a subject that has constituted the foundations of a regime change in state societies: the neoliberal subject. As much as neoliberalism came to mean the withdrawal of the state from certain arenas, the decline of social citizenship, privatization, downloading, and so forth, it also meant, if not predicated upon, the production of an image of the subject as sufficient, calculating, responsible, autonomous, and unencumbered. While the latter point has been a topic of debate concerning the rational subject, I wish to argue that the rational subject has itself been predicated upon and accompanied by another subject: the neurotic subject. More recently, it is this neurotic subject that has become the object of various governmental projects whose conduct is based not merely on calculating rationalities but also arises from and responds to fears, anxieties and insecurities, which I consider as ‘governing through neurosis’. The rise of the neurotic citizen...

Mixed-Gender Groups, Dating, and Romantic Relationships in Early Adolescence

Abstract: This study examined dating-stage and developmental-contextual models of romantic relationships during early adolescence. Same-gender friendships, affiliation with mixed-gender groups, dating, and romantic relationships were investigated in a sample of 1,284 young adolescents of diverse ethnocultural backgrounds. Data were collected cross-sectionally in Grades 5 through 8, as well as longitudinally in the fall and spring of an academic year. Consistent with a stage model, affiliation with mixed-gender groups and dating were qualitatively distinct activities that were sequentially organized and facilitated the progression from same-gender friendships to dyadic romantic relationships. The results also provide insights on how the developmental context may alter stage pathways: Dating activities were incorporated with mixed-gender affiliations, group-based romantic stages showed more stability than other stages, and the ethnocultural context influenced romantic timing. Finally, results indicated that participation in romantic activities heightened adolescents' future interest in having a romantic relationship.

Modelling strategies for controlling SARS outbreaks

Abstract: Severe acute respiratory syndrome (SARS), a new, highly contagious, viral disease, emerged in China late in 2002 and quickly spread to 32 countries and regions causing in excess of 774 deaths and 8098 infections worldwide. In the absence of a rapid diagnostic test, therapy or vaccine, isolation of individuals diagnosed with SARS and quarantine of individuals feared exposed to SARS virus were used to control the spread of infection. We examine mathematically the impact of isolation and quarantine on the control of SARS during the outbreaks in Toronto, Hong Kong, Singapore and Beijing using a deterministic model that closely mimics the data for cumulative infected cases and SARS-related deaths in the first three regions but not in Beijing until mid-April, when China started to report data more accurately. The results reveal that achieving a reduction in the contact rate between susceptible and diseased individuals by isolating the latter is a critically important strategy that can control SARS outbreaks with or without quarantine. An optimal isolation programme entails timely implementation under stringent hygienic precautions defined by a critical threshold value. Values below this threshold lead to control, but those above are associated with the incidence of new community outbreaks or nosocomial infections, a known cause for the spread of SARS in each region. Allocation of resources to implement optimal isolation is more effective than to implement sub-optimal isolation and quarantine together. A community-wide eradication of SARS is feasible if optimal isolation is combined with a highly effective screening programme at the points of entry.

Mirrors of Masculinity: Representation and Identity in Advertising Images

Abstract: Through explication of a visual research method, this paper theorizes how masculine identity interacts with consumption - of imagery, products, desires, and passions in advertising and consumer culture. We analyze the male body as a discursive 'effect' created at the intersection of consumption and several marketing discourses such as advertising, market segmentation, and visual communication, balancing between brand strategy - what the marketer intends - and brand community - the free appropriation of meaning by the market. The paper's contribution rests in extending previous work on male representation into historical, ontological, and photographic realms, providing a necessary complement between understanding advertising meaning as residing within managerial strategy or wholly subsumed by consumer response. We argue that greater awareness of the connections between the traditions and conventions of visual culture and their impact on the production and consumption of advertising images leads to enhanced ability to understand how advertising works as a representational system and signifying practice.

Ownership Types and Strategic Groups in an Emerging Economy

Abstract: Existing strategic group studies have rarely examined ownership type as a variable to classify firms in an industry. Using Chinese firms of different ownership types, we suggest that ownership type can be a parsimonious and important variable that managers use to cognitively classify firms into different strategic groups. While ownership itself is an objective variable, we contend that different ownership types lead to different managerial outlook and mentality due to a number of macro and micro foundations giving rise to various managerial cognitions. Employing the Miles and Snow typology, we find that state-owned enterprises (SOEs) and privately-owned enterprises (POEs) tend to adopt defender and prospector strategies, respectively, while collectively-owned enterprises (COEs) and foreign-invested enterprises (FIEs) exhibit an analyser orientation that falls between defenders and prospectors on the strategy continuum. Three statistical tests suggest that ownership types can be used to successfully predict strategic group memberships in China’s emerging economy.

Technology Adaptation in E-Commerce: Key Determinants of Virtual Stores Acceptance

Abstract: The emergence of the virtual store has paved the way for the diffusion of E-commerce. Understanding key determinants for successful virtual stores will provide important theoretical and practical implications for developing E-commerce strategies. Expanding the Technology Acceptance Model and Innovation Diffusion Theory, we propose a theoretical model for studying a wide array of issues involved in E-commerce strategies. We test the model using a Web-based survey, and identify factors that have impacted acceptance of virtual store, including product offerings, information richness, usability of storefront, perceived trust and perceived service quality. We discuss the implications for research and practice on how to remain competitive in the volatile electronic marketplace.

A review of primary and secondary influences on sport expertise

Abstract: Sport scientists have examined numerous factors influencing the acquisition and manifestation of high levels of performance. These factors can be divided into variables having a primary influence on expertise and variables that have a secondary influence through their interaction with other variables. Primary influences on expertise include genetic, training, and psychological factors while secondary influences include socio-cultural and contextual elements. This paper reviews the factors affecting the development of expert performance in sport and suggests directions for future research.

Against the current—stemming the tide: the nostalgic ideology of the contemporary radical populist right

Abstract: Since the 1980s, a growing number of radical right‐wing populist parties have managed to establish themselves permanently in the party systems of advanced liberal capitalist democracies. Initially dismissed as ephemeral reflections of a general debasement of politics in recent years, they represent today one of the most serious challenges to liberal democracy in Western Europe and elsewhere. Unlike the traditional postwar radical right, the contemporary populist right has developed an ideology that, albeit fundamentally anti‐liberal, is compatible with the basic formal principles of democracy. Radical right‐wing populist ideology is anti‐elitist, appealing instead to the common sense of ordinary people; exclusionary, appealing to the right to cultural diversity and identity; and openly discriminatory, appealing to the right to ‘national preference’. The larger goal behind the radical right‐wing populist political project is to halt and reverse the erosion of the established patterns of ethnic political an...