105 research outputs found

    The Effects Of Information Technology Innovativeness On Audit Efficiencies

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    Information technology (IT) has been identified as an important component of a company’s internal control and general business environment (COSO 2009).  This paper examines how IT innovativeness can create value in the accounting domain through its role in improving efficiencies associated with the audit process by reducing overall inherent risks and business risks.  To test the relationship between IT innovativeness and audit efficiencies, we use a sample of IT firms recognized by the publication InformationWeek as innovative users of IT and compare those firms with a control group.  For the dependent variables measuring audit efficiencies, we focus on audit fees and audit delays.  Our research suggests that firms recognized as IT innovators pay lower audit fees and receive their audit reports in a timelier manner than the control firms.  Our results are consistent with the idea that investments in IT can provide significant benefits for firms in terms of audit efficiencies

    Assessing the association between oral hygiene and preterm birth by quantitative light-induced fluorescence

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    The aim of this study was to investigate the purported link between oral hygiene and preterm birth by using image analysis tools to quantify dental plaque biofilm. Volunteers (η = 91) attending an antenatal clinic were identified as those considered to be “at high risk” of preterm delivery (i.e., a previous history of idiopathic preterm delivery, case group) or those who were not considered to be at risk (control group). The women had images of their anterior teeth captured using quantitative light-induced fluorescence (QLF). These images were analysed to calculate the amount of red fluorescent plaque (ΔR%) and percentage of plaque coverage. QLF showed little difference in ΔR% between the two groups, 65.00% case versus 68.70% control, whereas there was 19.29% difference with regard to the mean plaque coverage, 25.50% case versus 20.58% control. A logistic regression model showed a significant association between plaque coverage and case/control status (Ρ = 0.031), controlling for other potential predictor variables, namely, smoking status, maternal age, and body mass index (BMI)

    Using a Trait Approach to Analyze the Impact of Global Information Technology Applications

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    The objective of this study is to investigate how global IT applications are being used and to develop a means of assessing their impact. Building on the prior work of Palvia (1997), Sethi and King (1994), and Mahmood and Soon (1991), a multi-factor global IT impact model is developed. This model exhibits a high degree of reliability and validity. From a theoretical perspective, this study develops a measurement model that can be used to evaluate the use and impact of IT in a global environment. From a practitioner’s point of view, the study provides a better understanding of the factors that influence the use and impact of global IT applications

    Predatory Organisms with Untapped Biosynthetic Potential:Descriptions of Novel Corallococcus Species C. aberystwythensis sp. nov., C. carmarthensis sp. nov., C. exercitus sp. nov., C. interemptor sp. nov., C. llansteffanensis sp. nov., C. praedator sp. nov., C. sicarius sp. nov., and C. terminator sp. nov

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    Corallococcus spp. are common soil-dwelling organisms which kill and consume prey microbes through the secretion of antimicrobial substances. Two species of Corallococcus have been described previously (Corallococcus coralloides and Corallococcus exiguus). A polyphasic approach was taken to characterise antimicrobial, biochemical and phenotypic properties of eight Corallococcus spp. strains and the two type strains. We also report here the genome sequence of the C. exiguus type strain (DSM 14696T). The genomes of the eight candidate strains, C. exiguus DSM 14696T and C. coralloides DSM 2259T, had an average nucleotide identity below 95% and digital DNA-DNA hybridisation scores less than the 70% lower bound for species identity, indicating they belong to distinct species. All ten strains, including the two type strains, were thoroughly characterised, including biochemical analysis of their fatty acid methyl esters, substrate utilisation and sugar assimilation. Each strain gave a distinct profile of properties, which together with their genomic differences supports the proposal of the eight candidate strains as novel species: Corallococcus exercitus sp. nov. (AB043AT = DSM 108849T = NBRC 113887T), Corallococcus interemptor sp. nov. (AB047AT = DSM 108843T = NBRC 113888T), Corallococcus aberystwythensis sp. nov. (AB050AT = DSM 108846T = NBRC 114019T), Corallococcus praedator sp. nov. (CA031BT = DSM 108841T = NBRC 113889T), Corallococcus sicarius sp. nov. (CA040BT = DSM 108850T = NBRC 113890T), Corallococcus carmarthenensis sp. nov. (CA043DT = DSM 108842T = NBRC 113891T), Corallococcus llansteffanensis sp. nov. (CA051BT = DSM 108844T = NBRC 114100T) and Corallococcus terminator sp. nov. (CA054AT = DSM 108848T = NBRC 113892T)

    Can the bacterial community of a High Arctic glacier surface escape viral control?

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    Glacial ice surfaces represent a seasonally evolving three-dimensional photic zone which accumulates microbial biomass and potentiates positive feedbacks in ice melt. Since viruses are abundant in glacial systems and may exert controls on supraglacial bacterial production, we examined whether changes in resource availability would promote changes in the bacterial community and the dynamics between viruses and bacteria of meltwater from the photic zone of a Svalbard glacier. Our results indicated that, under ambient nutrient conditions, low estimated viral decay rates account for a strong viral control of bacterial productivity, incurring a potent viral shunt of a third of bacterial carbon in the supraglacial microbial loop. Moreover, it appears that virus particles are very stable in supraglacial meltwater, raising the prospect that viruses liberated in melt are viable downstream. However, manipulating resource availability as dissolved organic carbon, nitrogen, and phosphorous in experimental microcosms demonstrates that the photic zone bacterial communities can escape viral control. This is evidenced by a marked decline in virus-to-bacterium ratio (VBR) concomitant with increased bacterial productivity and number. Pyrosequencing shows a few bacterial taxa, principally Janthinobacterium sp., dominate both the source meltwater and microcosm communities. Combined, our results suggest that viruses maintain high VBR to promote contact with low-density hosts, by the manufacture of robust particles, but that this necessitates a trade-off which limits viral production. Consequently, dominant bacterial taxa appear to access resources to evade viral control. We propose that a delicate interplay of bacterial and viral strategies affects biogeochemical cycling upon glaciers and, ultimately, downstream ecosystems

    Establishment of the first humpback whale fibroblast cell lines and their application in chemical risk assessment

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    This paper reports the first successful derivation and characterization of humpback whale fibroblast cell lines. Primary fibroblasts were isolated from the dermal connective tissue of skin biopsies, cultured at 37°C and 5% CO in the standard mammalian medium DMEM/F12 supplemented with 10% fetal bovine serum (FBS). Of nine initial biopsies, two cell lines were established from two different animals and designated HuWa1 and HuWa2. The cells have a stable karyotype with 2n=44, which has commonly been observed in other baleen whale species. Cells were verified as being fibroblasts based on their spindle-shaped morphology, adherence to plastic and positive immunoreaction to vimentin. Population doubling time was determined to be ~41h and cells were successfully cryopreserved and thawed. To date, HuWa1 cells have been propagated 30 times. Cells proliferate at the tested temperatures, 30, 33.5 and 37°C, but show the highest rate of proliferation at 37°C. Short-term exposure to para,para'-dichlorodiphenyldichloroethylene (p,p'-DDE), a priority compound accumulating in southern hemisphere humpback whales, resulted in a concentration-dependent loss of cell viability. The effective concentration which caused a 50% reduction in HuWa1 cell viability (EC value) was approximately six times greater than the EC value for the same chemical measured with human dermal fibroblasts. HuWa1 exposed to a natural, p,p'-DDE-containing, chemical mixture extracted from whale blubber showed distinctively higher sensitivity than to p,p'-DDE alone. Thus, we provide the first cytotoxicological data for humpback whales and with establishment of the HuWa cell lines, a unique in vitro model for the study of the whales' sensitivity and cellular response to chemicals and other environmental stressors

    Understanding interventions and outcomes in supported employment and individual placement support : A qualitative evidence synthesis

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    Economically developed economies continue to display large and long-standing disability employment gaps. Train-then-place activation models have traditionally dominated efforts to support non-working disabled people to gain employment but recently there has been increasing interest in place-then-train Supported Employment (SE) activation models. Evidence regarding the effectiveness of SE approaches is growing. However, authors have called for greater understanding of the mechanisms underpinning these interventions. We therefore carried out a systematic review of qualitative research to understand the processes operating. We carried out a systematic review of qualitative research around SE interventions carried out in developed countries since 2000 in any population excepting those with severe mental illness. We used thematic synthesis and logic modelling methods and assessed the quality of the body of literature. We identified and included 13 relevant source studies containing qualitative data. Key aspects of the programmes reported were the nature of the support, the employment advisor, and the type of employment. Influencing factors were client-related, employer and employment-related, programme-related, and system-related. Effects beyond the gaining of employment included a changed attitude to work, different outlook, increased skills and/or confidence. Suggested longer-term impacts were on health and wellbeing, financial security, independence, contribution to society and sense of belonging. This review adds to the growing evidence regarding the value of SE interventions for disabled people. It adds insights regarding the key elements of the programmes, and suggests outcomes beyond the measures typically considered within quantitative studies. [Abstract copyright: Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.

    Understanding interventions and outcomes in supported employment and individual placement support: A qualitative evidence synthesis

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    Background Economically developed economies continue to display large and long-standing disability employment gaps. Train-then-place activation models have traditionally dominated efforts to support non-working disabled people to gain employment but recently there has been increasing interest in place-then-train Supported Employment (SE) activation models. Objective Evidence regarding the effectiveness of SE approaches is growing. However, authors have called for greater understanding of the mechanisms underpinning these interventions. We therefore carried out a systematic review of qualitative research to understand the processes operating. Methods We carried out a systematic review of qualitative research around SE interventions carried out in developed countries since 2000 in any population excepting those with severe mental illness. We used thematic synthesis and logic modelling methods and assessed the quality of the body of literature. Results We identified and included 13 relevant source studies containing qualitative data. Key aspects of the programmes reported were the nature of the support, the employment advisor, and the type of employment. Influencing factors were client-related, employer and employment-related, programme-related, and system-related. Effects beyond the gaining of employment included a changed attitude to work, different outlook, increased skills and/or confidence. Suggested longer-term impacts were on health and wellbeing, financial security, independence, contribution to society and sense of belonging. Conclusions This review adds to the growing evidence regarding the value of SE interventions for disabled people. It adds insights regarding the key elements of the programmes, and suggests outcomes beyond the measures typically considered within quantitative studies

    Does stress induce salt intake?

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    Psychological stress is a common feature of modern day societies, and contributes to the global burden of disease. It was proposed by Henry over 20 years ago that the salt intake of a society reflects the level of stress, and that stress, through its effect on increasing salt intake, is an important factor in the development of hypertension. This review evaluates the evidence from animal and human studies to determine if stress does induce a salt appetite and increase salt consumption in human subjects. Findings from animal studies suggest that stress may drive salt intake, with evidence for a potential mechanism via the sympatho-adrenal medullary system and/or the hypothalamo&ndash;pituitary&ndash;adrenal axis. In contrast, in the few laboratory studies conducted in human subjects, none has found that acute stress affects salt intake. However, one study demonstrated that life stress (chronic stress) was associated with increased consumption of snack foods, which included, but not specifically, highly salty snacks. Studies investigating the influence of chronic stress on eating behaviours are required, including consumption of salty foods. From the available evidence, we can conclude that in free-living, Na-replete individuals, consuming Na in excess of physiological requirements, stress is unlikely to be a major contributor to salt intake.<br /
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