10 results on '"Vlad, A."'
Search Results
2. Save Money to Lose Money? Implications of Opting Out of a Voluntary Audit Review for a Firm's Cost of Debt*.
- Author
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Porumb, Vlad-Andrei, Zengin-Karaibrahimoglu, Yasemin, Wang, Shuo, and Lobo, Gerald J.
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CORPORATE debt financing ,CAPITAL costs ,EARNINGS management ,FINANCIAL statements ,BUSINESS enterprises ,EXTERNAL debts ,ACCOUNTING - Abstract
An audit review (AR) is a mechanism used by boards to assess the quality of interim financial reports on a timely basis. In Canada, the AR is voluntary, with listed firms mandated to disclose when they choose to not purchase additional audit verification. Given the relatively low cost of an AR, opting out of it can be regarded as a negative signal, especially in the context of lenders' sensitivity to downside risk. Using a sample of 7,585 firm-year observations from 1,616 public firms in Canada over the period 2004-2015, we document that firms without a voluntary AR have a higher cost of debt than firms with an AR. Furthermore, after firms opt out of the AR, the increase in the cost of debt is accompanied by a rise in discretionary abnormal accruals and managers' stock-based compensation. Moreover, no-AR firms are more likely to reduce post-switch private borrowing and have lower equity analyst following. Our study is the first to document that although listed borrowers that opt out of an AR have a higher cost of debt financing, they are concurrently able to engage in more earnings management and grant their managers higher stock-based compensation because of lower external monitoring. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
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3. VOCATIONAL KNOWLEDGE TRANSFER OF CRAFT MASTER SKILLS IN POST-INDUSTRIAL ERA.
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VECKIE, Vlad Walter and VECKIE, Edward Anthony
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APPRENTICESHIP programs , *ABILITY , *SERVICE economy , *KNOWLEDGE transfer , *MENTORING , *TWENTIETH century , *TECHNOLOGICAL revolution , *TECHNOLOGY transfer - Abstract
Post-industrial era can be described as a time of transition from primarily manufacturing of physical goods to service economy, due to technological revolution conversion in the last decades of the 20th century. This decline from industrial manufacturing has led to higher unemployment and demise of traditional craft skills vocational training. Economies of developed world is confronted with the shortage of the skilled industrial trade, as well in qualified home trade service i.e. cabinetmakers, plumbers and electricians. Shrinking availability of trained crafts people requires implementation of more practical apprenticeship programs, ensuring these skills don't get lost. This paper points out the importance of mentoring in manufacturing, as well as for service companies and presents results of survey on mentoring in three medium-sized companies in Canada. [ABSTRACT FROM AUTHOR]
- Published
- 2021
4. Validation of the Withdrawal Assessment Tool–1 in Adult Intensive Care Patients.
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Capilnean, Anissa, Martone, Amanda, Rosu, Vlad A., Sandu, Patricia R., Murgoi, Paul, Frenette, Anne Julie, Williamson, David, Lecavalier, Annie, Jayaraman, Dev, Rico, Philippe, Bellemare, Patrick, Gélinas, Céline, and Perreault, Marc M.
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ANALGESICS ,ARTIFICIAL respiration ,CRITICALLY ill ,DRUG withdrawal symptoms ,INTENSIVE care units ,LONGITUDINAL method ,RESEARCH methodology ,CLASSIFICATION of mental disorders ,NARCOTICS ,SCIENTIFIC observation ,PATIENTS ,RESEARCH evaluation ,RESEARCH funding ,PILOT projects ,INTER-observer reliability ,RESEARCH methodology evaluation ,DATA analysis software ,DESCRIPTIVE statistics - Abstract
Background The Withdrawal Assessment Tool–1 (WAT-1) has been validated for assessing iatrogenic withdrawal syndrome in critically ill children receiving mechanical ventilation, but little is known about this syndrome in critically ill adults. Objective To evaluate the validity and reliability of the WAT-1 in critically ill adults. Methods A prospective, observational, open-cohort pilot study of critically ill adults receiving mechanical ventilation and regular administration of opioids for at least 72 hours. Patients were assessed for withdrawal twice daily on weekdays and once daily on weekends using the WAT-1 after an opioid weaning episode. The presence of iatrogenic withdrawal syndrome was evaluated once daily using modified Diagnostic and Statistical Manual of Mental Disorders (Fifth Edition) (DSM-5) criteria. All evaluations were blinded and performed independently. The criterion validity of the WAT-1 and the interrater reliability for WAT-1 and DSM-5 evaluations were determined. Results During 8 months, 52 adults (median age, 51.5 years) were enrolled. Eight patients (15%) had at least 1 positive assessment during their intensive care unit stay using the DSM-5, compared with 19 patients (37%) using the WAT-1. The overall sensitivity of the WAT-1 was 50%, and its specificity was 65.9%. Agreement between WAT-1 and DSM-5 assessments was poor (κ = 0.102). The interrater reliability for the WAT-1 was 89.1% and for the DSM-5 was 90.1%. Conclusion Despite showing reliability, the WAT-1 is not a valid tool for assessing the presence of iatrogenic withdrawal syndrome in adults. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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5. Deterministic Models of Growth and Mortality for Jack Pine in Boreal Forests of Western Canada.
- Author
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Strimbu, Vlad C., Bokalo, Mike, and Comeau, Philip G.
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JACK pine ,TREE growth ,TREE mortality ,TREE height ,PLANT competition ,TAIGA ecology - Abstract
We developed individual tree deterministic growth and mortality models for jack pine (Pinus banksiana Lamb.) using data from permanent sample plots in Alberta, Saskatchewan and Manitoba, Canada. Height and diameter increment equations were fitted using nonlinear mixed effects models. Logistic mixed models were used to estimate jack pine survival probability based on tree and stand characteristics. The resulting models showed that (1) jack pine growth is significantly influenced by competition; (2) competitive effects differ between species groups; and (3) survival probability is affected by tree size and growth, stand composition, and stand density. The estimated coefficients of selected growth and mortality functions were implemented into the Mixedwood Growth Model (MGM) and the simulated predictions were evaluated against independently measured data. The validation showed that the MGM can effectively model jack pine trees and stands, providing support for its use in management planning. [ABSTRACT FROM AUTHOR]
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- 2017
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6. Contingent workers: needs, personality characteristics, and work motivation.
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Vlad Vaiman, Jeanette Lemmergaard, and Ana Azevedo
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CONTINGENT employment ,EMPLOYEE motivation ,INDUSTRIAL management ,INTERNET surveys ,BUSINESS consultants ,PERSONNEL management ,BUSINESS planning - Abstract
Purpose - This paper seeks to challenge the claim that traditional and non-traditional employees differ significantly in terms of their needs, personality characteristics, and work motivation patterns, by surveying management consultants in Canada. Design/methodology/approach - The study is based on a quantitative online survey undertaken among 204 Canadian management consultants in 2008, representing both traditional employed consultants, contingent consultants, and company representatives. Findings - The study demonstrated no significant differences with regard to needs, motivation, and personality characteristics between traditional and non-traditional employed management consultants, which means that no significant changes to existing human resource management policies seem to be needed. Originality/value - The existing literature on contingent employees' needs, personality characteristics and work motivation has mainly been devoted to the study of differences between traditional and non-traditional work arrangements seen as single groups. This study extends and complements the understanding of the underlying dimensions of both the explicit and the implicit contract within the contingent management consultant-organization relationship in order to explain the influence of these dimensions on the human resource management strategies. The underlying assumption is that non-traditional work arrangements vary according to the type of job and the context in which the job is performed. [ABSTRACT FROM AUTHOR]
- Published
- 2011
7. Immunogenicity and safety of a tri-antigenic versus a mono-antigenic hepatitis B vaccine in adults (PROTECT): a randomised, double-blind, phase 3 trial.
- Author
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Vesikari, Timo, Langley, Joanne M, Segall, Nathan, Ward, Brian J, Cooper, Curtis, Poliquin, Guillaume, Smith, Bruce, Gantt, Soren, McElhaney, Janet E, Dionne, Marc, van Damme, Pierre, Leroux-Roels, Isabel, Leroux-Roels, Geert, Machluf, Nathalie, Spaans, Johanna N, Yassin-Rajkumar, Bebi, Anderson, David E, Popovic, Vlad, Diaz-Mitoma, Francisco, and PROTECT Study Group
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HEPATITIS B vaccines , *ADULTS , *HEPATITIS B , *HEPATITIS B virus , *INJECTIONS , *HEPATITIS B prevention , *VIRAL antigens , *RESEARCH , *IMMUNIZATION , *RESEARCH methodology , *MEDICAL cooperation , *EVALUATION research , *MEDICAL protocols , *COMPARATIVE studies , *RANDOMIZED controlled trials , *BLIND experiment , *VIRAL antibodies - Abstract
Background: The seroprotection rate (SPR) of hepatitis B vaccination in adults is suboptimal. The aim of this study was to compare the SPR of a tri-antigenic hepatitis B vaccine (TAV), with a mono-antigenic vaccine (MAV) in adults of all ages.Methods: This was a multicentre, double-blind, phase 3, randomised controlled trial (PROTECT) comparing the immunogenicity and safety of TAV with MAV in 28 community and hospital sites in the USA, Finland, Canada, and Belgium. Adults (aged ≥18 years) seronegative for hepatitis B virus (HBV), including those with well-controlled common chronic conditions, were randomly assigned (1:1) and stratified by study centre and age according to a web-based permuted blocked randomisation. Participants received either TAV or MAV which were administered as an intramuscular dose (1 mL) of TAV (10 μg; Sci-B-Vac, VBI Vaccines [SciVac, Rehovot, Israel]) or MAV (20 μg; Engerix-B [GlaxoSmithKline Biologicals, Rixensart, Belgium]) on days 0, 28, and 168 with six study visits and 24 weeks of follow-up after the third vaccination. Participants, investigators, and those assessing outcomes were masked to group assignment. The co-primary outcomes were to show non-inferiority of the SPRs 4 weeks after the third vaccination with TAV versus MAV in adults aged 18 years and older, as well as superiority in adults aged 45 years and older. SPR was defined as the percentage of participants attaining anti-HBs titres of 10 mIU/mL or higher. Non-inferiority of TAV to MAV was concluded if the lower limit of the 95% CI for the between-group difference was greater than -5%. Non-inferiority was assessed in the per-protocol set of participants (aged ≥18 years) and superiority was assessed in all participants (aged ≥45 years) who received at least one vaccination and had at least one evaluable immunogenicity sample after baseline (full analysis set). Safety analyses were a secondary outcome and included all participants who received at least one injection. This trial is registered at Clinicaltrials.gov (NCT03393754) and EudraCT (2017-001819-36) and is closed to new participants.Findings: Between Dec 13, 2017, and April 8, 2019, 1607 participants (796 allocated to TAV and 811 allocated to MAV) were randomly assigned and distributed across age cohorts of 18-44 years (299 of 1607; 18·6%), 45-64 years (716 of 1607; 44·6%), and 65 years and older (592 of 1607; 36·8%). In participants aged 18 years and older, SPR was 91·4% (656 of 718) in the TAV group versus 76·5% (553 of 723) in the MAV group (difference 14·9%, 95% CI 11·2-18·6), showing non-inferiority in the per-protocol set. In participants aged 45 years and older, SPR was 89·4% (559 of 625) in the TAV group versus 73·1% (458 of 627) in the MAV group (difference 16·4%, 95% CI 12·2-20·7), showing superiority in the full analysis set. TAV was associated with higher rates of mild or moderate injection site pain (63·2% [503 of 796] in TAV vs 36·3% [294 of 811] in MAV), tenderness (60·8% [484 of 796] in TAV vs 34·8% [282 of 811] in MAV), and myalgia (34·7% [276 of 796] vs 24·3% [197 of 811] in MAV). Otherwise, the safety profile of TAV was similar to that of MAV.Interpretation: The safety and efficacy of TAV shows its usefulness for the prevention of HBV infection in adults, including those with stable and controlled chronic conditions.Funding: VBI Vaccines. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
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8. In-depth genome analyses of viruses from vaccine-derived rabies cases and corresponding live-attenuated oral rabies vaccines.
- Author
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Pfaff, Florian, Müller, Thomas, Freuling, Conrad M., Fehlner-Gardiner, Christine, Nadin-Davis, Susan, Robardet, Emmanuelle, Cliquet, Florence, Vuta, Vlad, Hostnik, Peter, Mettenleiter, Thomas C., Beer, Martin, and Höper, Dirk
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ORAL vaccines , *RABIES vaccines , *REVERSE genetics , *RABIES , *RABIES virus , *CENTRAL nervous system - Abstract
Live-attenuated rabies virus strains such as those derived from the field isolate Street Alabama Dufferin (SAD) have been used extensively and very effectively as oral rabies vaccines for the control of fox rabies in both Europe and Canada. Although these vaccines are safe, some cases of vaccine-derived rabies have been detected during rabies surveillance accompanying these campaigns. In recent analysis it was shown that some commercial SAD vaccines consist of diverse viral populations, rather than clonal genotypes. For cases of vaccine-derived rabies, only consensus sequence data have been available to date and information concerning their population diversity was thus lacking. In our study, we used high-throughput sequencing to analyze 11 cases of vaccine-derived rabies, and compared their viral population diversity to the related oral rabies vaccines using pairwise Manhattan distances. This extensive deep sequencing analysis of vaccine-derived rabies cases observed during oral vaccination programs provided deeper insights into the effect of accidental in vivo replication of genetically diverse vaccine strains in the central nervous system of target and non-target species under field conditions. The viral population in vaccine-derived cases appeared to be clonal in contrast to their parental vaccines. The change from a state of high population diversity present in the vaccine batches to a clonal genotype in the affected animal may indicate the presence of a strong bottleneck during infection. In conclusion, it is very likely that these few cases are the consequence of host factors and not the result of the selection of a more virulent genotype. Furthermore, this type of vaccine-derived rabies leads to the selection of clonal genotypes and the selected variants were genetically very similar to potent SAD vaccines that have undergone a history of in vitro selection. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
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9. Joint interpretation of AEM and aeromagnetic data acquired over the Drybones kimberlite, NWT (Canada).
- Author
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Di Massa, Domenico, Fedi, Maurizio, Florio, Giovanni, Vitale, Andrea, Viezzoli, Andrea, and Kaminski, Vlad
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JOINTS (Engineering) , *KIMBERLITE eruptions , *ELECTROMAGNETIC fields , *POLARIZATION (Electricity) , *STRUCTURAL geology , *BAYS - Abstract
We present the joint interpretation of airborne electromagnetic and aeromagnetic data, acquired to study kimberlite pipes. We analyse the data surveyed in 2005 over Drybones Bay, Archean Slave Province of the Northwest Territories, northern Canada. This area hosts a recently discovered kimberlite province with >150 kimberlite pipes. Magnetic and electromagnetic data were each one modelled by 1D inversion. For magnetic data we inverted vertical soundings built through upward continuations of the measured data at various altitudes. The validity of the method was prior verified by tests on synthetic data. Electromagnetic data were processed and inverted using the modified AarhusINV code, with Cole-Cole modelling, in order to take into account induced polarization effects, consisting in negative voltages and otherwise skewed transients. The integrated study of the two kinds of data has led to a better understanding of the structures at depth, even though the comparison between the magnetic and the electromagnetic models shows the different sensitivity of the two methods with respect to the geological structure at Drybones Bay. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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10. Gender-specific associations between psychological distress and injecting risk behaviours among people who inject drugs in Montreal, Canada.
- Author
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Minoyan, Nanor, Høj, Stine Bordier, Jutras-Aswad, Didier, Vlad, Dragos, Martel-Laferrière, Valérie, Sylvestre, Marie-Pierre, and Bruneau, Julie
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PSYCHOLOGICAL distress , *INTRAVENOUS drug abusers , *MENTAL health , *PARTICIPANT observation , *HIV infections , *NEEDLE sharing , *RISK-taking behavior , *RESEARCH , *INTRAVENOUS drug abuse , *RESEARCH methodology , *MEDICAL cooperation , *EVALUATION research , *COMPARATIVE studies , *DRUGS , *RESEARCH funding , *LONGITUDINAL method - Abstract
Background: Psychological distress is common among people who inject drugs (PWID) and may be associated with HCV-related risk behaviours. Previous studies have documented increased vulnerability to both psychological distress and HCV infection among female relative to male PWID. It is, however, unclear whether behavioural responses to distress differ by gender. This study estimated gender-specific associations between psychological distress and i) binge drug injection, and ii) sharing of injection materials.Methods: Data were drawn from HEPCO, a longitudinal cohort study involving three-monthly interviews with active PWID in Montreal, Canada. Past-month psychological distress was assessed with the Kessler (K10) scale, categorized for descriptive analyses as minimal (score 10-15), moderate (16-21), high (22-29), or severe (30-50). Binge was defined as injecting large quantities of drugs until participants could no longer continue (past 3 months). Sharing was defined as injection with previously-used needles or equipment (past 3 months). Generalized additive models were fit to estimate smooth, nonlinear associations between K10 scores and risk behaviours, by gender. Models were adjusted for known determinants of drug-related harms and included random intercepts to model within-subject correlation.Results: 805 individuals (82% male) provided 8158 observations (2011-2020). High to severe levels of distress were common and more frequent among women (55% vs 37%). Among men, the odds of binge and sharing monotonically and non-linearly increased with increasing scores of psychological distress. Associations for binge among women were attenuated relative to men but nevertheless increased with distress, albeit in a linear fashion. Sharing was not associated with distress among women.Conclusion: Psychological distress was differentially associated with injecting risk behaviours among men and women who inject drugs. Assessment of distress may provide novel prevention opportunities for select PWID. Further investigation into gender differences is warranted to inform development and tailoring of interventions. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
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