Search results for " APR"

showing 10 items of 924 documents

Zvaigžņotā Debess: 2010, Rudens (209)

2010

Contents: G.Carevsky, I.Daube. Comet Bennett ; E.Fogels. Srinivasa Ramanujan ; M.Krastiņš. Smallest Planet of the Solar System: a Riddle of Centuries (1st part) ; A.Alksnis, Z.Alksne. Hot Jupiters and Their Retrograde Motion ; V.Karitāns. James Webb Space Telescope. What will it Be? ; K.Salmiņš. GFZ CHAMP Laser Tracking Award to SLR Station Riga ; J.Jansons. Vladimir Afanasjev, Officer of the Baikonur Cosmodrom in the 1970s (concluded) ; J.Limansky. International Year of Astronomy 2009 in Philately. Series EUROPA (2nd sequel) ; J.Dambītis. Centenary of Prominent Latvian Mathematician Ernests Fogels (1910-1985) ; J.Klētnieks. Sketches of History of Astronomy (concluded) ; M.Gills. Public Sun…

Matemātiķim Ernestam Fogelam – 100Starptautiskais astronomijas gads 2009 filatēlijā – sērija EUROPA (2.turpin.)Pirmie cilvēki uz Mēness – pastmarkasAstronomijas profesoram Kārlim Kaufmanim – 100GFZ Atzinība LU AI par CHAMP lāzernovērojumiemKarstie jupiteriPubliskie saules pulksteņi LatvijāMerkurs – gadsimtu mīklaArvīdam Lūsim – 110Trešais debess vērotāju salidojumsZenta Kauliņa (16.02.1914.-18.03.2010.)Astronomijas vēsture – komētu aprakstiIlgonim Vilkam – 50Citplanēta HD 209458b ar komētas astiDžeimsa Veba kosmiskais teleskops JWSTKrišjānim Baronam – 175Astronomiskās parādības - 2010Baikonuras kosmodroma virsnieks Vladimirs AfanasjevsMarss – vēju erozijaSkaitļu 1234589 pieraksti senajās kultūrāsLeonora Roze (5.08.1928-2.07.2010.)Lielo Greizo Ratu spožāko zvaigžņu attālumiLatvijas atklātā skolēnu astronomijas olimpiādeAsteroīds Lutetia un ESA’s Rozeta

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Calibration of a thermoluminescent dosimeter worn over lead aprons in fluoroscopy guided procedures

2018

Fluoroscopy guided interventional procedures provide remarkable benefits to patients. However, medical staff working near the scattered radiation field may be exposed to high cumulative equivalent doses, thus requiring shielding devices such as lead aprons and thyroid collars. In this situation, it remains an acceptable practice to derive equivalent doses to the eye lenses or other unprotected soft tissues with a dosimeter placed above these protective devices. Nevertheless, the radiation backscattered by the lead shield differs from that generated during dosimeter calibration with a water phantom. In this study, a passive personal thermoluminescent dosimeter (TLD) was modelled by means of …

Materials scienceeye lens doseTLDImaging phantom030218 nuclear medicine & medical imaging03 medical and health sciences0302 clinical medicineOpticsProtective Clothingfashionbackscatter correction factorCalibrationmedicineDosimetryFluoroscopylead apronWaste Management and DisposalDosimetermedicine.diagnostic_testRadiation Dosimetersbusiness.industryEquivalent dosePublic Health Environmental and Occupational HealthEquipment DesignGeneral MedicinefluoroscopyLeadFluoroscopy030220 oncology & carcinogenesisfashion.garmentCalibrationLead apronThermoluminescent DosimetryThermoluminescent dosimeterbusinessJournal of Radiological Protection

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Assessing the competence learning to learn: a methodological proposal

2012

En este artículo se presenta un procedimiento para diseñar instrumentos para evaluar la competencia de Aprender a Aprender. Analizamos la secuencia de trabajo y los conceptos implicados. Se trata de una línea de trabajo que pretende diseñar instrumentos de evaluación referidos a estándares, para evaluar las competencias básicas en la educación obligatoria, y las genéricas o transversales en las titulaciones de grado universitarias (el sistema de instrumentos para universitarios se denomina ESCOGE). Se ilustra la reflexión acerca de esta propuesta con la definición teórica realizada para el diseño de instrumentos que permitan evaluar esta competencia en egresados universitarios del área de C…

MeasurementConstruct validityEvaluaciónAprendizaje a lo largo de la vidaLong life learningLearning to learnAprender a aprenderMediciónEvaluationValidación de constructoStandards settingDeterminación de estándares

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Los efectos a largo plazo de las competencias emocionales y la autoestima sobre los síntomas internalizantes de los adolescentes

2021

Internalizing symptoms such as depressive mood, somatic complaints and anxiety among adolescents are a major and global concern for parents, educators and professionals. Empirical research suggests that high level of self-esteem during adolescents is associated with psychological adjustment and emotional well-being. This study examines self-esteem as a potential mediator in the interplay between emotional competencies and internalizing symptoms during adolescence. Self-report data from 855 Spanish adolescents (Mage = 13.6, SD = 1.09, 52% girls) were collected in two waves, using a longitudinal design. The mediation model was estimated using structural equation modelling (SEM). Results show …