997 resultados para Jokiranta, Harri: Se on miehen elämää


Relevância:

40.00% 40.00%

Publicador:

Resumo:

This presentation describes research at Montana Tech to improve oil recovery rates in the Elm Coulee Oil Field in the Bakken Reservoir, Richmond County, Montana. The slides display current recovery rate predictions, enhanced oil recovery methods, reservoir model building and history matching strategies. Recommended development strategies include implementing hydrocarbon gas injection operations to improve current oil recovery rates by more than 75%. The impact of increased production on Production Engineers is also described. The Principal Investigators include John Evans, Leo Heath, David Reichhardt and Burt Todd in the Petroleum Engineering Department.

Relevância:

40.00% 40.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

40.00% 40.00%

Publicador:

Resumo:

verso: parade? Church is in the 100 block (-L. Steck)

Relevância:

30.00% 30.00%

Publicador:

Resumo:

A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and Economics

Relevância:

30.00% 30.00%

Publicador:

Resumo:

OBJECTIVE: To investigate the planning of subgroup analyses in protocols of randomised controlled trials and the agreement with corresponding full journal publications. DESIGN: Cohort of protocols of randomised controlled trial and subsequent full journal publications. SETTING: Six research ethics committees in Switzerland, Germany, and Canada. DATA SOURCES: 894 protocols of randomised controlled trial involving patients approved by participating research ethics committees between 2000 and 2003 and 515 subsequent full journal publications. RESULTS: Of 894 protocols of randomised controlled trials, 252 (28.2%) included one or more planned subgroup analyses. Of those, 17 (6.7%) provided a clear hypothesis for at least one subgroup analysis, 10 (4.0%) anticipated the direction of a subgroup effect, and 87 (34.5%) planned a statistical test for interaction. Industry sponsored trials more often planned subgroup analyses compared with investigator sponsored trials (195/551 (35.4%) v 57/343 (16.6%), P<0.001). Of 515 identified journal publications, 246 (47.8%) reported at least one subgroup analysis. In 81 (32.9%) of the 246 publications reporting subgroup analyses, authors stated that subgroup analyses were prespecified, but this was not supported by 28 (34.6%) corresponding protocols. In 86 publications, authors claimed a subgroup effect, but only 36 (41.9%) corresponding protocols reported a planned subgroup analysis. CONCLUSIONS: Subgroup analyses are insufficiently described in the protocols of randomised controlled trials submitted to research ethics committees, and investigators rarely specify the anticipated direction of subgroup effects. More than one third of statements in publications of randomised controlled trials about subgroup prespecification had no documentation in the corresponding protocols. Definitive judgments regarding credibility of claimed subgroup effects are not possible without access to protocols and analysis plans of randomised controlled trials.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Opinnäytetyöni käsittelee Yleisradion edesmenneen radiokanavan uuden YleQ:n taivalta sen perustamisesta huhtikuussa 2004 kanavan päättymiseen syyskuussa 2006. Ensisijaisina pohdinnan kohteinani ovat kanavan työntekijöiden ajatukset YleQ:n merkityksestä sesen päättymisen syistä. YleQ poikkesi muista Yleisradion kanavista sisältönsä puolesta, ollen populaarikulttuuria painottanut, nuorelle aikuisyleisölle suunnattu radiokanava. Erityisesti YleQ:n musiikkitarjonta täydensi laajuutensa ja monipuolisuutensa ansiosta Yleisradion kokonaistarjontaa. Opinnäytetyöni on toteutettu henkilöstöhaastattelujen avulla. Haastattelin 21 entistä YleQ:n työntekijää muutamaa kuukautta kanavan päättymisen jälkeen. Työn edetessä tuli tarpeelliseksi myös selvittää kuuden muun haastattelun avulla mm. kysymyksiä Yleisradion uudesta strategiasta sekä populaarikulttuurin asemasta Yleisradiossa. Oman työni taustalla on autenttinen kaksivuotinen osallistuminen tutkittavaan työyhteisöön. Lähtökohtana haastatteluille ovat ne käsitykset, joita minulle oli syntynyt työskennellessäni YleQ:ssa. Tutkimuksellisesti vahvat ennakkokäsitykseni voivat olla ongelmallisia, mutta toisaalta hiljainen tieto osoittautui tarpeelliseksi haastatteluita analysoidessani. YleQ:n entiset työntekijät kokivat tulleensa pompotelluiksi ja hyväksikäytetyiksi kokeiluun, johon Yleisradiossa ei kunnolla edes panostettu. Moni haastatelluistani koki, että YleQ:n hyvä idea epäonnistui huonon toteutuksensa vuoksi. Yleisesti kuitenkin ymmärrettiin kanavan lakkauttamisen johtuneen priorisoinnista yhtiön uusiin palveluihin. Tästä huolimatta moni haastatelluistani on huolissaan populaarikulttuurin tarjonnasta Yleisradiossa YleQ:n päättymisen jälkeen.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

BACKGROUND: Different studies have shown circadian variation of ischemic burden among patients with ST-Elevation Myocardial Infarction (STEMI), but with controversial results. The aim of this study was to analyze circadian variation of myocardial infarction size and in-hospital mortality in a large multicenter registry. METHODS: This retrospective, registry-based study was based on data from AMIS Plus, a large multicenter Swiss registry of patients who suffered myocardial infarction between 1999 and 2013. Peak creatine kinase (CK) was used as a proxy measure for myocardial infarction size. Associations between peak CK, in-hospital mortality, and the time of day at symptom onset were modelled using polynomial-harmonic regression methods. RESULTS: 6,223 STEMI patients were admitted to 82 acute-care hospitals in Switzerland and treated with primary angioplasty within six hours of symptom onset. Only the 24-hour harmonic was significantly associated with peak CK (p = 0.0001). The maximum average peak CK value (2,315 U/L) was for patients with symptom onset at 23:00, whereas the minimum average (2,017 U/L) was for onset at 11:00. The amplitude of variation was 298 U/L. In addition, no correlation was observed between ischemic time and circadian peak CK variation. Of the 6,223 patients, 223 (3.58%) died during index hospitalization. Remarkably, only the 24-hour harmonic was significantly associated with in-hospital mortality. The risk of death from STEMI was highest for patients with symptom onset at 00:00 and lowest for those with onset at 12:00. DISCUSSION: As a part of this first large study of STEMI patients treated with primary angioplasty in Swiss hospitals, investigations confirmed a circadian pattern to both peak CK and in-hospital mortality which were independent of total ischemic time. Accordingly, this study proposes that symptom onset time be incorporated as a prognosis factor in patients with myocardial infarction.

Relevância:

30.00% 30.00%

Publicador: