102 research outputs found

    Antecedents and postcedents of satisfaction in business relationships in Canada

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    This paper reports the findings of an investigation of whether trust and commitment influence satisfaction, and whether satisfaction then influences specific investments, opportunism, and formalisation. Using data collected in a survey of Canadian managers and executives, a model derived from marketing theory and previous empirical research was tested. The model includes both relationship marketing concepts and transaction cost theory concepts, an approach rarely encountered in existing studies. Satisfaction in an exchange relationship is formed by keeping promises in an iterative process, and serves as a safeguard against possible future risks (e.g., opportunism). Finally, we discuss the limitations of the study

    Inter-relationships among focal dimensions in relationship quality: a quantitative and exploratory approach

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    It is generally agreed that the relationship quality (RELQUAL) in business exchange situations is important. However, there does not appear to be a consensus on the conceptualisation and measurement of the many dimensions of this construct. This may be due to the difficulty in measuring many dimensions in one empirical study. This raises a concern regarding the understanding of the interaction among the various dimensions. Using data gathered in a survey of Canadian managers and executives the present study investigates how focal dimensions pertaining to RELQUAL inter-relate. A model consisting of the following ten dimensions derived from RELQUAL literature was tested: continuity, satisfaction, trust, commitment, opportunism, cooperation, coordination, formalisation, dependence, specific assets. All recommended guidelines for convergent, discriminant and nomological validity, as well as construct reliability, were met

    Properties of quality constructs in Canadian business relationships

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    This paper investigates whether satisfaction, in B2B relationships, is a mediating construct between the antecedents, trust and commitment, and subsequent outcomes. Using data from a survey of Canadian managers and executives, the study tested a structural equation model, the trust, commitment, satisfaction (TCS) model, where the antecedent constructs, trust and commitment, are mediated by the satisfaction construct, which in turn influences coordination, cooperation and continuity or ‘consequence’ constructs. The tested model indicated an acceptable fit, validity and reliability. The analysis in the present study reinforces the argument that satisfaction plays a mediating role in creating enduring relationships in business contexts

    Developments in Business Gaming A Review of the Past 40 Years

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    This article examines developments in business simulation gaming during the past 40 years. Covered in this article are a brief history of business games, the changing technology employed in the development and use of business games, changes in why business games are adopted and used, changes in how business games are administered, and the current state of business gaming. Readers interested in developments in other areas of simulation gaming (urban planning, social studies, ecology, economics, geography, health, etc.) are encouraged to look at other articles appearing during the 40th anniversary year of Simulation & Gaming and at the many fine articles that appeared in the silver anniversary issue of Simulation & Gaming (December 1995)

    Towards a Model of Conscientious Corporate Brands: A Canadian Study

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    Purpose – This paper attempts to validate a conceptual model for conscientious corporate brands (CCB) by exploring environmental and climate change issues together with perceptions of the internal and external effectiveness of corporate codes of ethics as dimensions of CCBs. Design/methodology/approach – By surveying organizations, the paper attempts to extend and validate previous research in ethical branding by proposing an additional empirically grounded conceptual model of “the conscientious dimension” of corporate brands. Research limitations/implications – The CCB model was tested on a sample of small-, medium- and large-sized companies in Canada, which may indicate less generalizability to larger companies or in other countries and contextual settings. Practical implications – The CCB-framework provides insights into the relationship between the natural environment, climate change and corporate codes of ethics, which organizational managers might relate to their organization. Originality/value – This empirical study extends previous research by studying the willingness among business managers to support aspects of conscientious corporate brands (CCBs) in business-to-business relationships: when considering the impact of their brands on the natural environment and climate change, and when considering their corporate codes of ethics. Such findings imply that ethical conscientiousness is not just a rider to brand value; rather, it is an integral dimension in the manufacturer-supplier relationship

    The BARRIERS scale -- the barriers to research utilization scale: A systematic review

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    <p>Abstract</p> <p>Background</p> <p>A commonly recommended strategy for increasing research use in clinical practice is to identify barriers to change and then tailor interventions to overcome the identified barriers. In nursing, the BARRIERS scale has been used extensively to identify barriers to research utilization.</p> <p>Aim and objectives</p> <p>The aim of this systematic review was to examine the state of knowledge resulting from use of the BARRIERS scale and to make recommendations about future use of the scale. The following objectives were addressed: To examine how the scale has been modified, to examine its psychometric properties, to determine the main barriers (and whether they varied over time and geographic locations), and to identify associations between nurses' reported barriers and reported research use.</p> <p>Methods</p> <p>Medline (1991 to September 2009) and CINHAL (1991 to September 2009) were searched for published research, and ProQuest<sup>® </sup>digital dissertations were searched for unpublished dissertations using the BARRIERS scale. Inclusion criteria were: studies using the BARRIERS scale in its entirety and where the sample was nurses. Two authors independently assessed the study quality and extracted the data. Descriptive and inferential statistics were used.</p> <p>Results</p> <p>Sixty-three studies were included, with most using a cross-sectional design. Not one study used the scale for tailoring interventions to overcome identified barriers. The main barriers reported were related to the setting, and the presentation of research findings. Overall, identified barriers were consistent over time and across geographic locations, despite varying sample size, response rate, study setting, and assessment of study quality. Few studies reported associations between reported research use and perceptions of barriers to research utilization.</p> <p>Conclusions</p> <p>The BARRIERS scale is a nonspecific tool for identifying general barriers to research utilization. The scale is reliable as reflected in assessments of internal consistency. The validity of the scale, however, is doubtful. There is no evidence that it is a useful tool for planning implementation interventions. We recommend that no further descriptive studies using the BARRIERS scale be undertaken. Barriers need to be measured specific to the particular context of implementation and the intended evidence to be implemented.</p

    Pleistocene Climate, Phylogeny, and Climate Envelope Models: An Integrative Approach to Better Understand Species' Response to Climate Change

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    Mean annual temperature reported by the Intergovernmental Panel on Climate Change increases at least 1.1°C to 6.4°C over the next 90 years. In context, a change in climate of 6°C is approximately the difference between the mean annual temperature of the Last Glacial Maximum (LGM) and our current warm interglacial. Species have been responding to changing climate throughout Earth's history and their previous biological responses can inform our expectations for future climate change. Here we synthesize geological evidence in the form of stable oxygen isotopes, general circulation paleoclimate models, species' evolutionary relatedness, and species' geographic distributions. We use the stable oxygen isotope record to develop a series of temporally high-resolution paleoclimate reconstructions spanning the Middle Pleistocene to Recent, which we use to map ancestral climatic envelope reconstructions for North American rattlesnakes. A simple linear interpolation between current climate and a general circulation paleoclimate model of the LGM using stable oxygen isotope ratios provides good estimates of paleoclimate at other time periods. We use geologically informed rates of change derived from these reconstructions to predict magnitudes and rates of change in species' suitable habitat over the next century. Our approach to modeling the past suitable habitat of species is general and can be adopted by others. We use multiple lines of evidence of past climate (isotopes and climate models), phylogenetic topology (to correct the models for long-term changes in the suitable habitat of a species), and the fossil record, however sparse, to cross check the models. Our models indicate the annual rate of displacement in a clade of rattlesnakes over the next century will be 2 to 3 orders of magnitude greater (430-2,420 m/yr) than it has been on average for the past 320 ky (2.3 m/yr)

    Complete Genome Viral Phylogenies Suggests the Concerted Evolution of Regulatory Cores and Accessory Satellites

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    We consider the concerted evolution of viral genomes in four families of DNA viruses. Given the high rate of horizontal gene transfer among viruses and their hosts, it is an open question as to how representative particular genes are of the evolutionary history of the complete genome. To address the concerted evolution of viral genes, we compared genomic evolution across four distinct, extant viral families. For all four viral families we constructed DNA-dependent DNA polymerase-based (DdDp) phylogenies and in addition, whole genome sequence, as quantitative descriptions of inter-genome relationships. We found that the history of the polymerase gene was highly predictive of the history of the genome as a whole, which we explain in terms of repeated, co-divergence events of the core DdDp gene accompanied by a number of satellite, accessory genetic loci. We also found that the rate of gene gain in baculovirus and poxviruses proceeds significantly more quickly than the rate of gene loss and that there is convergent acquisition of satellite functions promoting contextual adaptation when distinct viral families infect related hosts. The congruence of the genome and polymerase trees suggests that a large set of viral genes, including polymerase, derive from a phylogenetically conserved core of genes of host origin, secondarily reinforced by gene acquisition from common hosts or co-infecting viruses within the host. A single viral genome can be thought of as a mutualistic network, with the core genes acting as an effective host and the satellite genes as effective symbionts. Larger virus genomes show a greater departure from linkage equilibrium between core and satellites functions

    Speciation in little: the role of range and body size in the diversification of Malagasy mantellid frogs

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    <p>Abstract</p> <p>Background</p> <p>The rate and mode of lineage diversification might be shaped by clade-specific traits. In Madagascar, many groups of organisms are characterized by tiny distribution ranges and small body sizes, and this high degree of microendemism and miniaturization parallels a high species diversity in some of these groups. We here investigate the geographic patterns characterizing the radiation of the frog family Mantellidae that is virtually endemic to Madagascar. We integrate a newly reconstructed near-complete species-level timetree of the Mantellidae with georeferenced distribution records and maximum male body size data to infer the influence of these life-history traits on each other and on mantellid diversification.</p> <p>Results</p> <p>We reconstructed a molecular phylogeny based on nuclear and mitochondrial DNA for 257 species and candidate species of the mantellid frog radiation. Based on this phylogeny we identified 53 well-supported pairs of sister species that we used for phylogenetic comparative analyses, along with whole tree-based phylogenetic comparative methods. Sister species within the Mantellidae diverged at 0.2-14.4 million years ago and more recently diverged sister species had geographical range centroids more proximate to each other, independently of their current sympatric or allopatric occurrence. The largest number of sister species pairs had non-overlapping ranges, but several examples of young microendemic sister species occurring in full sympatry suggest the possibility of non-allopatric speciation. Range sizes of species included in the sister species comparisons increased with evolutionary age, as did range size differences between sister species, which rejects peripatric speciation. For the majority of mantellid sister species and the whole mantellid radiation, range and body sizes were associated with each other and small body sizes were linked to higher mitochondrial nucleotide substitution rates and higher clade diversity. In contrast, small range sizes were unexpectedly associated with a slow-down of mitochondrial substitution rates.</p> <p>Conclusions</p> <p>Based on these results we define a testable hypothesis under which small body sizes result in limited dispersal capabilities and low physiological tolerances, causing smaller and more strongly fragmented ranges. This can be thought to facilitate reproductive isolation and thus favor speciation. Contrary to the expectation of the faster speciation of such microendemic phenotype species, we only found small body sizes of mantellid frogs to be linked to higher diversification and substitution rates, but not small range sizes. A joint analysis of various species-rich regional anuran radiations might provide enough species with all combinations of range and body sizes for a more conclusive test of this hypothesis.</p

    Identification of a sex-linked SNP marker in the salmon louse (Lepeophtheirus salmonis) using RAD sequencing

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    The salmon louse (Lepeophtheirus salmonis (Kr&oslash;yer, 1837)) is a parasitic copepod that can, if untreated, cause considerable damage to Atlantic salmon (Salmo salar Linnaeus, 1758) and incurs significant costs to the Atlantic salmon mariculture industry. Salmon lice are gonochoristic and normally show sex ratios close to 1:1. While this observation suggests that sex determination in salmon lice is genetic, with only minor environmental influences, the mechanism of sex determination in the salmon louse is unknown. This paper describes the identification of a sex-linked Single Nucleotide Polymorphism (SNP) marker, providing the first evidence for a genetic mechanism of sex determination in the salmon louse. Restriction site-associated DNA sequencing (RAD-seq) was used to isolate SNP markers in a laboratory-maintained salmon louse strain. A total of 85 million raw Illumina 100 base paired-end reads produced 281,838 unique RAD-tags across 24 unrelated individuals. RAD marker Lsa101901 showed complete association with phenotypic sex for all individuals analysed, being heterozygous in females and homozygous in males. Using an allele-specific PCR assay for genotyping, this SNP association pattern was further confirmed for three unrelated salmon louse strains, displaying complete association with phenotypic sex in a total of 96 genotyped individuals. The marker Lsa101901 was located in the coding region of the prohibitin-2 gene, which showed a sex-dependent differential expression, with mRNA levels determined by RT-qPCR about 1.8-fold higher in adult female than adult male salmon lice. This study's observations of a novel sex-linked SNP marker are consistent with sex determination in the salmon louse being genetic and following a female heterozygous system. Marker Lsa101901 provides a tool to determine the genetic sex of salmon lice, and could be useful in the development of control strategies
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