Search results for "testing."
showing 10 items of 1654 documents
Circulating markers of retinal and optic nerve lipids
2013
Purpose Blood lipids are frequently used as a surrogate of lipid composition of peripheral tissues. Even if it is well accepted, such a relationship has never been clearly demonstrated for the eye. The aim of this study was to determine in human samples whether a lipidomic approach based on red blood cells could reveal associations between circulating and ocular lipid profiles. Methods Red blood cells, retinas and optic nerves were collected from 9 human donors. The lipidomic analyses on these tissues were done by both, gas chromatography and liquid chromatography coupled to an electrospray ionization source-mass spectrometer (LC-ESI-MS/MS). Results Gas chromatographic approach did not show…
Développement de méthodes de référence pour les biomarqueurs du bilan lipidique : application au contrôle qualité en biologie clinique
2013
Reliable measurements in medical biology are essential for early screening and appropriate follow-up of patients. Ensuring metrological traceability of clinical measurements to higher order reference methods or certified reference materials enables to obtain comparable results over time and between different laboratories that could use different methods to quantify the same biomarker.In this study, reference methods were developed and validated for lipid profile biomarkers (total cholesterol, triglycerides, HDL-C, and LDL-C). Their value added in proficiency testing schemes was demonstrated against consensus mean. They were also used to characterize a certified reference material (CRM) that…
Les évaluations nationales en France : outils pédagogiques et outils de pilotage, intérêts, limites et nouvelles perspectives
2006
06035; L'objectif principal des évaluations nationales est de permettre l'observation des compétences des élèves en début de cycle, elles fournissent aux enseignants des repères exploitables quant aux types d'erreurs fréquemment produites par les élèves au cours de leur apprentissage. Même si la dimension diagnostique reste prioritaire, ces évaluations peuvent également constituer un outil de pilotage au niveau national et local, mais des précautions doivent être prises en vue d'une interprétation correcte des résultats. Deux faiblesses principales caractérisent les épreuves nationales : la première porte sur l'échelle de mesure du niveau de connaissances scolaires, la seconde sur la défini…
Kehitysvammaisten aikuisten kestävyyskunnon taso ja muutos ikääntyessä : kahden kävelytestin vertaaminen
2015
Eveliina Keinonen (2015). Kehitysvammaisten aikuisten kestävyyskunnon taso ja muutos ikääntyessä: Kahden kävelytestin vertaaminen. Liikuntakasvatuksen laitos, Jyväskylän yli-opisto, liikuntapedagogiikan pro gradu –tutkielma, 66 s., 3 liitettä. Tutkimuksen tavoitteena oli tarkastella keski-ikäisten kehitysvammaisten naisten ja miesten kestävyyskunnon tasoa vammattomaan väestöön sekä Suomessa yleisesti käytössä oleviin terveysliikunnan suosituksiin verrattuna. Tarkastelun kohteena oli myös kehitysvammaisten kestävyyskunnossa esiintyvät muutokset seitsemän vuoden aikana. Lisäksi tutkimus pyrki selvittämään onko samanaikaisesti suoritettujen UKK-instituutin 2 kilometrin kävelytestin ja Rockport…
Diferencias de opinión sobre el uso de los test: su relación con la edad el género y el sector laboral
2021
Tests are important tools that help psychologists to make decisions about people. In order to propose actions aimed at improving the use of tests, it is important to determine what factors relate to psychologists’ opinions about testing practices. In this study we assess the role of three factors: gender, age, and job sector (public vs. private). In addition, we compare practitioners’ opinions with those reported by professors of test-related subjects (psychometrics, and psychological and psycho- educational assessment). After analyzing a sample of 1,248 members of the Spanish Psychological Association and 95 professors from different universities, results show some differences in opinions …
Prediction model for aneuploidy in early human embryo development revealed by single-cell analysis.
2014
Aneuploidies are prevalent in the human embryo and impair proper development, leading to cell cycle arrest. Recent advances in imaging and molecular and genetic analyses are postulated as promising strategies to unveil the mechanisms involved in aneuploidy generation. Here we combine time-lapse, complete chromosomal assessment and single-cell RT–qPCR to simultaneously obtain information from all cells that compose a human embryo until the approximately eight-cell stage (n=85). Our data indicate that the chromosomal status of aneuploid embryos (n=26), including those that are mosaic (n=3), correlates with significant differences in the duration of the first mitotic phase when compared with e…
Środowisko a antybiotykooporność izolatów Escherichia coli
2017
Pula farmaceutyków w środowisku powiększa się w wyniku kontaminacji wód, gruntów, ścieków, a także surowców pochodzenia zwierzęcego. Obecność antybiotyków w środowisku wpływa nie tylko na zahamowanie rozwoju mikroorganizmów, ale w stężeniu subinhibicyjnym może stymulować ekspresję genów wywołujących zjawisko antybiotykooporności. Celem pracy było porównanie wrażliwości na antybiotyki pałeczek Escherichia coli wyizolowanych z surowego mleka i zmieszanych odpadów drobiarskich. Materiał badawczy stanowiły szczepy E.coli wyizolowane z surowca mleczarskiego i zmieszanych odpadów drobiarskich. Ocenę wrażliwości izolatów na antybiotyki przeprowadzono metodą Kirby-Bauera. Profil oporności E. coli u…
Puhetta arvioinnista : yleisten kielitutkintojen arvioijien käsityksiä arvioinnista
2016
This paper focuses on raters’ beliefs and views of assessment and the factors influencing their judgments and performance as raters in the National Certificates of Language Proficiency (NCLP) Finnish language test. Data were collected using semi-structured interviews (N=18) and content analysis was used to classify the responses. Findings suggest that raters’ experience and training have positive effects on rater performance and the use of assessment criteria. Experienced raters seem to be more familiar with different language proficiency levels and their view of language is more holistic today than during the first years of their rating experience. There are some external factors and lingu…
Towards Automatic Testing of Reference Point Based Interactive Methods
2016
In order to understand strengths and weaknesses of optimization algorithms, it is important to have access to different types of test problems, well defined performance indicators and analysis tools. Such tools are widely available for testing evolutionary multiobjective optimization algorithms. To our knowledge, there do not exist tools for analyzing the performance of interactive multiobjective optimization methods based on the reference point approach to communicating preference information. The main barrier to such tools is the involvement of human decision makers into interactive solution processes, which makes the performance of interactive methods dependent on the performance of huma…
Acceptance test-driven development
2011
Acceptance Test-Driven Development (ATDD) is meant to bring customers, engineers, testers and software developers together and help them understand each other. ATDD is not an automatic testing technique but rather a precise requirement management and software development convention, which helps to avoid misunderstandings between stakeholders and leads to production of program code satisfying only the real requirements making it more simple and clear. Conclusions about benefits and common problems emerging during adoption of ATDD are based on results of a software project which took place while this work was being written. They also concur very well with other case studies. A large framework…