Showing papers by "Oklahoma State University–Stillwater published in 2008"
TL;DR: In this article, the authors examined the causal relationships among destination image, tourist attribute and overall satisfaction, and proposed a research model in which seven hypotheses were developed, and the theoretical and managerial implications were drawn based on the study findings.
1,934 citations
Stephen Richards1, Richard A. Gibbs1, George M. Weinstock1, Susan J. Brown2 +187 more•Institutions (47)
TL;DR: Tribolium castaneum is a member of the most species-rich eukaryotic order, a powerful model organism for the study of generalized insect development, and an important pest of stored agricultural products.
Abstract: Tribolium castaneum is a member of the most species-rich eukaryotic order, a powerful model organism for the study of generalized insect development, and an important pest of stored agricultural products. We describe its genome sequence here. This omnivorous beetle has evolved the ability to interact with a diverse chemical environment, as shown by large expansions in odorant and gustatory receptors, as well as P450 and other detoxification enzymes. Development in Tribolium is more representative of other insects than is Drosophila, a fact reflected in gene content and function. For example, Tribolium has retained more ancestral genes involved in cell-cell communication than Drosophila, some being expressed in the growth zone crucial for axial elongation in short-germ development. Systemic RNA interference in T. castaneum functions differently from that in Caenorhabditis elegans, but nevertheless offers similar power for the elucidation of gene function and identification of targets for selective insect control.
1,248 citations
TL;DR: The New Environmental Paradigm (NEP) Scale as mentioned in this paper has become the most widely used measure of environmental concern in the world and has been employed in hundreds of studies in dozens of nations.
Abstract: The New Environmental Paradigm (NEP) Scale, published in The Journal of Environmental Education by R. E. Dunlap and K. D. Van Liere (1978), has become the most widely used measure of environmental concern in the world and been employed in hundreds of studies in dozens of nations. This article tells the story of the NEP Scale, beginning with how the author developed the notion of an environmental paradigm and then decided to measure it. The author describes the original NEP Scale and its 3 revisions, 1 of which is rapidly replacing the 1978 version in most studies. The author then reviews current uses of the various NEP Scales and examines major criticisms of them. Last, the author discusses the failure of an ecological worldview to become institutionalized in the United States, stemming from intense opposition to it since the 1990s, and the need to understand the sources of this opposition and monitor the situation.
819 citations
TL;DR: The factor structure and correlates of the ICU scale in a sample of juvenile offenders between the ages of 12 and 20 are tested and confirmatory factor analyses are consistent with the presence of three independent factors that relate to a higher-order callous-unemotional dimension.
669 citations
TL;DR: The molecular characterization of the tick-pathogen interface is rapidly advancing and providing new avenues for the development of novel control strategies for both tick infestations and their associated pathogens.
Abstract: Ticks (Acari: Ixodidae) transmit a wide variety of pathogens to vertebrates including viruses, bacteria, protozoa and helminthes. Tick-borne pathogens are believed to be responsible for more than 100,000 cases of illness in humans throughout the world. Ticks are considered to be second worldwide to mosquitoes as vectors of human diseases, but they are the most important vectors of disease-causing pathogens in domestic and wild animals. Infection and development of pathogens in both tick and vertebrate hosts are mediated by molecular mechanisms at the tick-pathogen interface. These mechanisms, involving traits of both ticks and pathogens, include the evolution of common and species-specific characteristics. The molecular characterization of the tick-pathogen interface is rapidly advancing and providing new avenues for the development of novel control strategies for both tick infestations and their associated pathogens.
645 citations
TL;DR: This article found that over 92% of these books, most published in the US since 1992, are linked to conservative think tanks (CTTs) and found that 90% of them espouse environmental scepticism.
Abstract: Environmental scepticism denies the seriousness of environmental problems, and self-professed ‘sceptics’ claim to be unbiased analysts combating ‘junk science’. This study quantitatively analyses 141 English-language environmentally sceptical books published between 1972 and 2005. We find that over 92 per cent of these books, most published in the US since 1992, are linked to conservative think tanks (CTTs). Further, we analyse CTTs involved with environmental issues and find that 90 per cent of them espouse environmental scepticism. We conclude that scepticism is a tactic of an elite-driven counter-movement designed to combat environmentalism, and that the successful use of this tactic has contributed to the weakening of US commitment to environmental protection.
619 citations
TL;DR: In this article, the authors report the advances in the state of the art considering the relationships between the properties of functional surfaces, their applications and the technologies to engineer surfaces, and their applications in many advanced fields, such as: electronics, information technology, energy, optics, tribology, biology and biomimetics.
593 citations
TL;DR: In this article, the authors present a synthesis of rotational and continuous grazing on rangelands and conclude that rotational grazing is superior to continuous grazing in terms of ecological effectiveness.
591 citations
Baylor College of Medicine1, University of Illinois at Chicago2, University of Texas Health Science Center at San Antonio3, St. Joseph's Hospital and Medical Center4, University of Rochester5, University of California, San Francisco6, Washington University in St. Louis7, Eastern Maine Medical Center8, University of Michigan9, University of Connecticut10, Boston Children's Hospital11, Oklahoma State University–Stillwater12, University of Toronto13, University of Arkansas for Medical Sciences14
TL;DR: It is proposed that recurrent reciprocal microdeletions and microduplications within 1q21.1 represent previously unknown genomic disorders characterized by abnormal head size along with a spectrum of developmental delay, neuropsychiatric abnormalities, dysmorphic features and congenital anomalies.
Abstract: Chromosome region 1q21.1 contains extensive and complex low-copy repeats, and copy number variants (CNVs) in this region have recently been reported in association with congenital heart defects, developmental delay, schizophrenia and related psychoses. We describe 21 probands with the 1q21.1 microdeletion and 15 probands with the 1q21.1 microduplication. These CNVs were inherited in most of the cases in which parental studies were available. Consistent and statistically significant features of microcephaly and macrocephaly were found in individuals with microdeletion and microduplication, respectively. Notably, a paralog of the HYDIN gene located on 16q22.2 and implicated in autosomal recessive hydrocephalus was inserted into the 1q21.1 region during the evolution of Homo sapiens; we found this locus to be deleted or duplicated in the individuals we studied, making it a probable candidate for the head size abnormalities observed. We propose that recurrent reciprocal microdeletions and microduplications within 1q21.1 represent previously unknown genomic disorders characterized by abnormal head size along with a spectrum of developmental delay, neuropsychiatric abnormalities, dysmorphic features and congenital anomalies. These phenotypes are subject to incomplete penetrance and variable expressivity.
562 citations
TL;DR: An experimental system based on starvation for isoleucine, which could be applied to both wild‐type Escherichia coli and the multiauxotrophic relA spoT mutant, presents a model that expands and functionally integrates the ppGpp‐mediated stringent response to include control of virtually all macromolecular synthesis and intermediary metabolism.
Abstract: The stringent response to amino acid starvation, whereby stable RNA synthesis is curtailed in favor of transcription of amino acid biosynthetic genes, is controlled by the alarmone ppGpp. To elucidate the extent of gene expression effected by ppGpp, we designed an experimental system based on starvation for isoleucine, which could be applied to both wildtype Escherichia coli and the multi-auxotrophic relA spoT mutant (ppGpp0). We used microarrays to profile the response to amino acid starvation in both strains. The wildtype response included induction of the general stress response, down regulation of genes involved in production of macromolecular structures, and comprehensive restructuring of metabolic gene expression, but not induction of amino acid biosynthesis genes en masse. This restructuring of metabolism was confirmed using kinetic Biolog assays. These responses were profoundly altered in the ppGpp0 strain. Furthermore, upon isoleucine starvation, the ppGpp0 strain exhibited a larger cell size and continued growth, ultimately producing 50% more biomass than the wildtype, despite producing a similar amount of protein. This mutant phenotype correlated with aberrant gene expression in diverse processes including DNA replication, cell division, and fatty acid and membrane biosynthesis. We present a model that expands and functionally integrates the ppGpp-mediated stringent response to include control of virtually all macromolecular synthesis and intermediary metabolism.
499 citations
TL;DR: In this article, the authors synthesized available information on patterns of bat fatalities from a review of 21 postconstruction fatality studies conducted at 19 facilities in 5 United States regions and one Canadian province.
Abstract: Wind has become one of the fastest growing sources of renewable energy worldwide, but widespread and often extensive fatalities of bats have increased concern regarding the impacts of wind energy development on bats and other wildlife. We synthesized available information on patterns of bat fatalities from a review of 21 postconstruction fatality studies conducted at 19 facilities in 5 United States regions and one Canadian province. Dominance of migratory, foliage- and tree-roosting lasiurine species (e.g., hoary bat [Lasiurus cinereus]) killed by turbines was consistent among studies. Bat fatalities, although highly variable and periodic, consistently peaked in late summer and fall, coinciding with migration of lasiurines and other species. A notable exception was documented fatalities of pregnant female Brazilian free-tailed bats (Tadarida brasiliensis) in May and June at a facility in Oklahoma, USA, and female silver-haired bats (Lasionycteris noctivagans) during spring in Tennessee, USA, and...
TL;DR: The limiting effects of varying the thickness of a dielectric overlayer on planar double split-ring resonator (SRR) arrays are studied by terahertz time-domain spectroscopy and the bounds of resonance shifting are discussed.
Abstract: The limiting effects of varying the thickness of a dielectric overlayer on planar double split-ring resonator (SRR) arrays are studied by terahertz time-domain spectroscopy. Uniform dielectric overlayers from 100 nm to 16 µm thick are deposited onto fixed SRR arrays in order to shift the resonance frequency of the electric response. We discuss the bounds of resonance shifting and emphasize the resulting limitations for SRR-based sensing. These results are presented in the context of typical biosensing situations and are compared to previous work and other existing sensing platforms.
TL;DR: Deep sequencing proved to be an effective strategy that allowed the discovery of 23 low-abundance new miRNAs and 40 candidate mi RNAs in rice, mostly derived from a unique locus in rice genome.
Abstract: Small RNA-guided gene silencing at the transcriptional and post-transcriptional levels has emerged as an important mode of gene regulation in plants and animals. Thus far, conventional sequencing of small RNA libraries from rice led to the identification of most of the conserved miRNAs. Deep sequencing of small RNA libraries is an effective approach to uncover rare and lineage- and/or species-specific microRNAs (miRNAs) in any organism. In order to identify new miRNAs and possibly abiotic-stress regulated small RNAs in rice, three small RNA libraries were constructed from control rice seedlings and seedlings exposed to drought or salt stress, and then subjected to pyrosequencing. A total of 58,781, 43,003 and 80,990 unique genome-matching small RNAs were obtained from the control, drought and salt stress libraries, respectively. Sequence analysis confirmed the expression of most of the conserved miRNAs in rice. Importantly, 23 new miRNAs mostly each derived from a unique locus in rice genome were identified. Six of the new miRNAs are conserved in other monocots. Additionally, we identified 40 candidate miRNAs. Allowing not more than 3 mis-matches between a miRNA and its target mRNA, we predicted 20 targets for 9 of the new miRNAs. Deep sequencing proved to be an effective strategy that allowed the discovery of 23 low-abundance new miRNAs and 40 candidate miRNAs in rice.
Michigan State University1, Oak Ridge National Laboratory2, Purdue University3, Brown University4, Marine Biological Laboratory5, University of Illinois at Urbana–Champaign6, Colorado State University7, United States Department of Agriculture8, University of California, Davis9, Iowa State University10, Ecological Society of America11, Amazon.com12, Agricultural Research Service13, University of Wisconsin-Madison14, University of São Paulo15, H. John Heinz III Center for Science, Economics and the Environment16, Oklahoma State University–Stillwater17, University of Arkansas18, University of Oklahoma19, Institute of Ecosystem Studies20, University of Nebraska–Lincoln21
TL;DR: Science-based policy is essential for guiding an environmentally sustainable approach to cellulosic biofuels and it is important to have a strategy that acknowledges the role of science in promoting sustainability.
Abstract: Science-based policy is essential for guiding an environmentally sustainable approach to cellulosic biofuels.
TL;DR: The authors compared results from three waves of the World Values Survey (WVS) to those of the Gallup's 24-nation "Health of the Planet" (HOP) survey conducted in 1992, as the HOP found highly inconsistent and often negative correlations between national affluence and environmental concern.
Abstract: Conventional wisdom has long held that widespread citizen concern for environmental quality is limited to wealthy nations. Both academics and policymakers assume that residents of poor nations are too preoccupied with satisfying their “material” needs to support the “postmaterialist” value of environmental protection. This view was challenged by results of Gallup's 24-nation “Health of the Planet” (HOP) survey conducted in 1992, as the HOP found highly inconsistent and often negative correlations between national affluence and environmental concern. The current article compares results from three waves of the “World Values Survey” (WVS) to those of the HOP. When appropriate measures of environmental concern are employed, the WVS results generally replicate those of the HOP, as in all three waves such concern correlates inconsistently with national affluence. The overall results suggest that citizen concern for the environment is not dependent on national affluence, nor on affluence-based postmaterialist values.
TL;DR: In the quest for building long-term successful brands, many marketers have become increasingly interested in how to create and foster successful communities of brand users as discussed by the authors. But the psychological underpinnings of a customer's perception of community with other users of the brand remain unexplored.
TL;DR: By combining the expression analysis with the computational approach, it is found that 6 miRNAs and 2 small RNAs that have been identified only in Arabidopsis thus far, are also conserved in Brassica spp.
Abstract: Background
MicroRNAs (miRNAs) are recently discovered small non-coding RNAs that play pivotal roles in gene expression, specifically at the post-transcriptional level in plants and animals. Identification of miRNAs in large number of diverse plant species is important to understand the evolution of miRNAs and miRNA-targeted gene regulations. Now-a-days, publicly available databases play a central role in the in-silico biology. Because, at least ~21 miRNA families are conserved in higher plants, a homology based search using these databases can help identify orthologs or paralogs in plants.
TL;DR: This paper examined the constructs of entrepreneurial orientation (EO) versus small business orientation (SBO), their impact on small business performance, and whether these effects are moderated by longevity, and found that the structural paths connecting EO and SBO to performance are not the same in these groups: for the younger group, EO significantly predicts performance while for the older group, only SBO significantly predicted performance.
Abstract: This study examines the constructs of entrepreneurial orientation (EO) versus small business orientation (SBO), their impact on small business performance, and whether these effects are moderated by longevity. A sample of 267 small business owners from 11 small–medium downtowns was used in structural equation modeling (SEM) testing of the measurement, structural and moderation hypotheses. The measurement confirmatory factor analyses models of the two constructs revealed that EO and SBO are unique constructs. Then a structural model predicting performance was tested. Finally, a two-group model split on “below 11 years” versus “11+ years” demonstrated that the structural paths connecting EO and SBO to performance are not the same in these groups: for the younger group, only EO significantly predicts performance while for the older group, only SBO significantly predicts performance.
TL;DR: The authors examined in 4 studies whether correlations between implicit and explicit tests were influenced by the similarity in task demands and, hence, the processes engaged by each test, and proposed a solution that uses procedures to maximize structural fit.
Abstract: Implicit and explicit attitude tests are often weakly correlated, leading some theorists to conclude that implicit and explicit cognition are independent. Popular implicit and explicit tests, however, differ in many ways beyond implicit and explicit cognition. The authors examined in 4 studies whether correlations between implicit and explicit tests were influenced by the similarity in task demands (i.e., structural fit) and, hence, the processes engaged by each test. Using an affect misattribution procedure, they systematically varied the structural fit of implicit and explicit tests of racial attitudes. As test formats became more similar, the implicit-explicit correlation increased until it became higher than in most previous research. When tests differ in structure, they may underestimate the relationship between implicit and explicit cognition. The authors propose a solution that uses procedures to maximize structural fit.
TL;DR: Construction and analysis of a small RNA library led to the identification of 20 conserved and 35 novel miRNA families in soybean and enable investigation of the role of miRNAs in rhizobial symbiosis.
Abstract: Small RNAs regulate a number of developmental processes in plants and animals. However, the role of small RNAs in legume-rhizobial symbiosis is largely unexplored. Symbiosis between legumes (e.g. soybean) and rhizobia bacteria (e.g. Bradyrhizobium japonicum) results in root nodules where the majority of biological nitrogen fixation occurs. We sought to identify microRNAs (miRNAs) regulated during soybean-B. japonicum symbiosis. We sequenced ~350000 small RNAs from soybean roots inoculated with B. japonicum and identified conserved miRNAs based on similarity to miRNAs known in other plant species and new miRNAs based on potential hairpin-forming precursors within soybean EST and shotgun genomic sequences. These bioinformatics analyses identified 55 families of miRNAs of which 35 were novel. A subset of these miRNAs were validated by Northern analysis and miRNAs differentially responding to B. japonicum inoculation were identified. We also identified putative target genes of the identified miRNAs and verified in vivo cleavage of a subset of these targets by 5'-RACE analysis. Using conserved miRNAs as internal control, we estimated that our analysis identified ~50% of miRNAs in soybean roots. Construction and analysis of a small RNA library led to the identification of 20 conserved and 35 novel miRNA families in soybean. The availability of complete and assembled genome sequence information will enable identification of many other miRNAs. The conserved miRNA loci and novel miRNAs identified in this study enable investigation of the role of miRNAs in rhizobial symbiosis.
TL;DR: In this article, a review of the current scientific evidence of wild boar as a TB reservoir host is presented, with the aim of expanding the list of wildlife species that act as natural reservoirs of TB in different parts of the world and suggest the need to control the infection in wild Boar populations for the complete eradication of the disease in Spain.
TL;DR: This paper explored the antecedents and consequences of family-centered businesses' socially responsible behavior in the context of socially responsible business practices, and found that family businesses may have unique perspectives of social responsible behavior due to family involvement and ties to the community.
Abstract: Family‐centered businesses may have unique perspectives of socially responsible behavior due to family involvement and ties to the community. This research explored the antecedents and consequences...
TL;DR: In this article, the impact of firm reputation on consumers' evaluation of e-tailers' market response outcomes (satisfaction, trust, and loyalty) in two cultures, the USA (individualism, low uncertainty avoidance, low context, and high trust society) and South Korea (collectivism, high uncertainty, high context and low trust society).
Abstract: Purpose – The purpose of this paper is to empirically compare the impact of firm reputation on consumers' evaluation of e‐tailers' market response outcomes (satisfaction, trust, and loyalty) in two cultures, the USA (individualism, low uncertainty avoidance, low context, and high‐trust society) and South Korea (collectivism, high uncertainty, high context, and low‐trust society).Design/methodology/approach – Two sets of data were collected, one in the USA and the other in Korea, using a mall intercept method. Males and females over 18 who had online purchase experience were chosen as respondents.Findings – The results with 385 usable questionnaires (182 from the USA and 203 from Korea) revealed that firm reputation contributes to customer loyalty by increasing customer satisfaction, and this effect is stronger in Korea than in the USA. However, contrary to the expectations, no cultural differences were found in reputation‐trust and trust‐loyalty links. That is, firm reputation leads to customer loyalty th...
TL;DR: A basic phenomenological model for OSL is presented and the key processes affecting the outcome of an OSL measurement are discussed, and open questions and future challenges in OSL dosimetry are highlighted as a guide to the research needed to further advance the field.
Abstract: This paper reviews fundamental and practical aspects of optically stimulated luminescence (OSL) dosimetry pertaining to applications in medicine, having particularly in mind new researchers and medical physicists interested in gaining familiarity with the field. A basic phenomenological model for OSL is presented and the key processes affecting the outcome of an OSL measurement are discussed. Practical aspects discussed include stimulation modalities (continuous-wave OSL, pulsed OSL and linear modulation OSL), basic experimental setup, available OSL readers, optical fiber systems and basic properties of available OSL dosimeters. Finally, results from the recent literature on applications of OSL in radiotherapy, radiodiagnostics and heavy charged particle dosimetry are discussed in light of the theoretical and practical framework presented in this review. Open questions and future challenges in OSL dosimetry are highlighted as a guide to the research needed to further advance the field.
TL;DR: The observation that some of the small RNAs are up- or down-regulated in response to stress implies that these smallRNAs have a role in stress tolerance and a better understanding of such processes will lead to new strategies to improve plant stress tolerance.
TL;DR: In this article, a multi-level hierarchical linear modeling (HLM) model was developed to integrate social exchange, workplace friendship, and climate research to develop a multilevel model for interpersonal exchange between supervisors, subordinates, and coworkers at work.
Abstract: This paper seeks to advance research on interpersonal exchange relationships between supervisors, subordinates, and coworkers at work by integrating social exchange, workplace friendship, and climate research to develop a multi-level model. We tested the model using hierarchical linear modeling (HLM) with data obtained from a sample of 215 manager–employee dyads working in 36 teams. At the individual level, leader–member exchange (LMX) was found to be related to workplace friendship. Further, workplace friendship was positively related to team–member exchange (TMX) and mediated the LMX–TMX relationship. At the team level, HLM results indicated that the relationship between LMX and workplace friendship was moderated by affective climate. These findings suggest that high-quality LMX relationships are associated with enhanced workplace friendship between employees, especially when the affective climate is strong.
TL;DR: In this paper, the authors review the major managerial causes for low NUE, including (1) poor synchrony between fertilizer N and crop demand, (2) uniform field applications to spatially variable landscapes that commonly vary in crop N need, and (3) failure to account for temporally variable influences on crop N needs.
TL;DR: In this article, a measurement of the inclusive jet cross section in p (p) over bar collisions at a center-of-mass energy root s = 1.96 TeV using data collected by the D0 experiment at the Fermilab Tevatron Collider corresponding to an integrated luminosity of 0: 70 fb(-1).
Abstract: We report on a measurement of the inclusive jet cross section in p (p) over bar collisions at a center-of-mass energy root s = 1.96 TeV using data collected by the D0 experiment at the Fermilab Tevatron Collider corresponding to an integrated luminosity of 0: 70 fb(-1). The data cover jet transverse momenta from 50 to 600 GeV and jet rapidities in the range -2.4 to 2.4. Detailed studies of correlations between systematic uncertainties in transverse momentum and rapidity are presented, and the cross section measurements are found to be in good agreement with next-to-leading order QCD calculations.
TL;DR: The purpose of this review is to summarize different strategies employed to identify essential genes in Arabidopsis, an important component of the minimal gene set in plants, to present an overview of the datasets and specific genes identified to date, and to discuss the prospects for future saturation of this important class of genes.
TL;DR: In this article, the authors demonstrate that the trust in the salesperson and exchange inefficiency both mediate the effect of relationship marketing on seller financial outcomes, and customers' relationship orientation moderates the impact of marketing on both trust and exchange efficiency.
Abstract: Relationship marketing research and practice operate according to the paradigm that firms should invest in relationship marketing to build better relationships, which will generate improved financial performance. However, findings that relationship marketing efforts vary in their effectiveness across customers and may even be detrimental to performance challenge this belief. This article, therefore, offers a theoretical model that addresses three key issues: 1) what factors determine a customer’s need for relational governance (relationship orientation); 2) what mediating mechanism captures the negative effects of relationship marketing on performance (exchange inefficiency); and 3) how does a customer’s relationship orientation determine the effectiveness of relationship marketing, thus allowing for effective segmentation. The authors demonstrate in an empirical study that the trust in the salesperson and exchange inefficiency both mediate the effect of relationship marketing on seller financial outcomes. In addition, customers’ relationship orientation moderates the impact of relationship marketing on both trust and exchange inefficiency.