936 resultados para math.NA


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Relatório de Estágio apresentado à Escola Superior de Educação de Lisboa para obtenção de grau de mestre em Ensino do 1.º e do 2.º Ciclo do Ensino Básico

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Relatório da UC Seminário de Apoio à Prática Profissional Supervisionada Mestrado em Educação Pré-Escolar

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Dissertação apresentada para obtenção do grau de Mestre em Educação Matemática na Educação Pré-Escolar e nos 1.º e 2.º Ciclos do Ensino Básico

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Dissertação apresentada à Escola Superior de Educação de Lisboa para obtenção de grau de mestre em Educação Matemática na Educação Pré- Escolar e nos 1º e 2º Ciclo do Ensino Básico

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The year 2012 was the “boom year” in MOOC and all its outstanding growth until now, made us move forward in designing the first MOOC in our Institution (and the third in our country, Portugal). Most MOOC are video lectured based and the learning analytic process to these ones is just taking its first steps. Designing a video-lecture seems, at a first glance, very easy: one can just record a live lesson or lecture and turn it, directly, into a video-lecture (even here one may experience some “sound” and “camera” problems); but developing some engaging, appealing video-lecture, that motivates students to embrace knowledge and that really contributes to the teaching/learning process, it is not an easy task. Therefore questions like: “What kind of information can induce knowledge construction, in a video-lecture?”, “How can a professor interact in a video-lecture when he is not really there?”, “What are the video-lectures attributes that contribute the most to viewer’s engagement?”, “What seems to be the maximum “time-resistance” of a viewer?”, and many others, raised in our minds when designing video-lectures to a Mathematics MOOC from the scratch. We believe this technological resource can be a powerful tool to enhance students' learning process. Students that were born in digital/image era, respond and react slightly different to outside stimulus, than their teachers/professors ever did or do. In this article we will describe just how we have tried to overcome some of the difficulties and challenges we tackled when producing our own video-math-lectures and in what way, we feel, videos can contribute to the teaching and learning process at higher education level.

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Background Mobilization with movement (MWM) has been shown to reduce pain, increase range of motion (ROM) and physical function in a range of different musculoskeletal disorders. Despite this evidence, there is a lack of studies evaluating the effects of MWM for hip osteoarthritis (OA). Objectives To determine the immediate effects of MWM on pain, ROM and functional performance in patients with hip OA. Design Randomized controlled trial with immediate follow-up. Method Forty consenting patients (mean age 78 ± 6 years; 54% female) satisfied the eligibility criteria. All participants completed the study. Two forms of MWM techniques (n = 20) or a simulated MWM (sham) (n = 20) were applied. Primary outcomes: pain recorded by numerical rating scale (NRS). Secondary outcomes: hip flexion and internal rotation ROM, and physical performance (timed up and go, sit to stand, and 40 m self placed walk test) were assessed before and after the intervention. Results For the MWM group, pain decreased by 2 points on the NRS, hip flexion increased by 12.2°, internal rotation by 4.4°, and functional tests were also improved with clinically relevant effects following the MWM. There were no significant changes in the sham group for any outcome variable. Conclusions Pain, hip flexion ROM and physical performance immediately improved after the application of MWM in elderly patients suffering hip OA. The observed immediate changes were of clinical relevance. Future studies are required to determine the long-term effects of this intervention.

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RATIONALE: A dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis is a well-documented neurobiological finding in major depression. Moreover, clinically effective therapy with antidepressant drugs may normalize the HPA axis activity. OBJECTIVE: The aim of this study was to test whether citalopram (R/S-CIT) affects the function of the HPA axis in patients with major depression (DSM IV). METHODS: Twenty depressed patients (11 women and 9 men) were challenged with a combined dexamethasone (DEX) suppression and corticotropin-releasing hormone (CRH) stimulation test (DEX/CRH test) following a placebo week and after 2, 4, and 16 weeks of 40 mg/day R/S-CIT treatment. RESULTS: The results show a time-dependent reduction of adrenocorticotrophic hormone (ACTH) and cortisol response during the DEX/CRH test both in treatment responders and nonresponders within 16 weeks. There was a significant relationship between post-DEX baseline cortisol levels (measured before administration of CRH) and severity of depression at pretreatment baseline. Multiple linear regression analyses were performed to identify the impact of psychopathology and hormonal stress responsiveness and R/S-CIT concentrations in plasma and cerebrospinal fluid (CSF). The magnitude of decrease in cortisol responsivity from pretreatment baseline to week 4 on drug [delta-area under the curve (AUC) cortisol] was a significant predictor (p<0.0001) of the degree of symptom improvement following 16 weeks on drug (i.e., decrease in HAM-D21 total score). The model demonstrated that the interaction of CSF S-CIT concentrations and clinical improvement was the most powerful predictor of AUC cortisol responsiveness. CONCLUSION: The present study shows that decreased AUC cortisol was highly associated with S-CIT concentrations in plasma and CSF. Therefore, our data suggest that the CSF or plasma S-CIT concentrations rather than the R/S-CIT dose should be considered as an indicator of the selective serotonergic reuptake inhibitors (SSRIs) effect on HPA axis responsiveness as measured by AUC cortisol response.

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Contient : 1 Journal autographe de JEHAN DE LA FOSSE, où sont notés mois par mois les principaux événements des années 1557 à 1590, arrivés en France et particulièrement à Paris, où vivait l'auteur, curé de St-Leu et de St-Barthélemy ; 2 Recueil d'épitaphes ; « Cavendish,... general Norris,... docter Story,... mylord Treasurer,... Frier Andrew,... Ellis,... earle of Essex, beheaded in the tower », Joannes Rekingale, episcopus Cicestriensis, Gulielmus de Blitz, archidiaconus Nodovicensis ; Thomas Linaerus, regis Henrici VIII medicus, Antonius Riccius Faventiae, « Mr Hofkins », Lucretia Borgia, Honorius P. M., Johannes Riberius ; Galfridus Chaucer, Corythus, filius Oenones et Paridis, Ninus, Assyriae monarcha, Pyramis, lateritia Asychis, Aegypti regis ; Bartholomaeus Platina, Petrus Pomponatius, Pompeius Magnus, Capys, Ennius, Hannibal ; Marcus Antonius Turrianus, Marcus Antonius Coccius, Marcus Antonius Casanova, Sardanapalus, Rufus, Julius Caesar, Augustus Caesar ; Petrus Ciaconius, Nicolaus Macchiavellus, Gulielmus Rondeletus, medicus, Anicia, foemina romana, Callicratea ; Johannes Coletus, Rembertus Dodonaeus, medicus Maximiliani II et Rodolphi imperatorum, Alcaeus poeta, Scipio Africanus ; Paracelsus, Gerardus Noviomagus et Andreas Hyperius, Didacus de Valdes, Albericus de Vere et Gulielmus, primus comes Oxoniensis, Robertus Buc ; Hieronymus Cagnolus Vercellensis, Johannes Stofflerus, mathematicus Tubingae, Remigius Bellaqueus, Pallas, Evandri filius, Zarmanochegas indus, de Bargosa ; Johannes Rivius Attbend, Petrus Bembus, Lucius P. M. Veronae, Gulielmus Norselez, decanus quondam ecclesiae S. Pauli Londini, Mathias Corvinus, rex Pannoniae ; Philippus Callimachus Cracoviae, in aede S. Trinitatis, Ludovicus Bologninus, Bononiae, Rachel, uxor Jacobi Bethleem, Aratus, Plato, Aeschylus ; Joannes Zonaras, Homerus, Menander, Epictetus ; Berengarius, archidiaconus Andegavensis, Andreas Fanzonius, Cyrus, Persarum monarcha, Midas ; Hugo S. Victoris Parisiensis, S. Bernardus, abbas claraevallensis, Petrus de Toledo, Psittacus, Musaeus poeta, Linus, thebanus poeta, Orpheus ; Petrus Lombardus, Petrus Comestor, Pallas, libertus Romae, Megista, Spartanus vates ; Aegidius de Roma, archiepiscopus Bituricensis, Johannes Gerson, Aristocrates, perfidus in Lycaei Jovis luco, Setho, sacerdos Vulcani et Aegypti rex, Rosamunda Cliffordensis, Petrus Aretinus ; Nicolaus de Lyra, Jacobus Pisaurus, Paphi episcopus, Cedwalla, rex Sussexiae ; Alphonsus Tostadus, hispanus, Abulensis episcopus, Albertus Pius de Sabaudia, princeps Carporum, Similis, praefectus praetorianorum, Jupiter, Osyris, Isis ; Aeneas Sylvius, Christophorus Colombus, Hermes, Apollo, Timon, Darius ; Robertus Gaguinus, Johannes de Sacro Busto, Darius, Hystaspis filius, Simandius, Aegypti rex, Idomeneus et Myrio, filii Deucalionis, Semiramis ; Alexander Piccolomineus, Justina, pulchra foemina, quam maritus zelotypus nefarie decollavit, Claudia, nobilis foemina Romae, Carolus Magnus, Carolus V, imperator ; Actius Plautus, Johannes Boccacius, Franciscus Ximenes, cardinalis Hispaniae, Federicus imperator, Sylla, Ricardus I, rex Anglorum ; Johannes Stadius, math. belga, C. Manlia camertina, Johannes de Mandeville, Patricius, Brigida et Columda in Hibernia, la reine d'Angleterre, femme de Jacques Ier ; Johannes Glandorp, Jodocus, medicus Romae, Urandus, sive Durandus, Johannes Jacobus Trivultius, Ludovicus VIII, rex Francorum ; Antonius quidam italus, Fin dal Finale, Battistina Senensis, puella elegantissima ; Chalonerus Dubliniae, Askew Lincolniensis, Christophorus Hatton, Robertus, comes Leicestriae ; Johannes Chidley, Walterus Ralegh, Arturus Gorges, Johannes Parkar, Maria Stafford, Charitas et Carolus Ho., Thomas Wals, Sylvanus Scorus, Johannes Horo et Edwardus Nymark, Edwardus Stanhop, Franciscus Wal ; Philippus Sydney, Franciscus Walsinghan, N. Marsonius, jurisconsultus, Christophorus H, Gulielmus, comes Penbrok, Angliae marescallus, Antonius Deny, frater Lubinus ; Fratislaus, dux Bohemiae, countess of Penbrok, Edward Spenser, Henry Abyngdon, Thomas Nash, N. Dobson ; Dr Hugh a price, Johannes Vitulus, Dr Bently, Hor. Pallavicin, Margaret Ratcliff ; Howlet, Elian, Henry Barron ; James Stuart, Thomas Sackville, Penelope d'Evreux, uxor domini Bar. Rich, pellicis comitis Devonshire, Robert Cecil, Ricardus Bancroft, archiepiscopus Cantuariensis ; Godefridus de Bulion, Balduinus, rex Jerusalem, Allicia, pulchra foemina anglica et forte meretrix, Theobaldus, comes Campaniae, qui vixit tempore regis Angliae Stephani ; Fernandus de Castro, hispanus in Anglia exulans et moriens ob fidem in Dominum Petrum, regem Castellae, Johannes Taylor de Colman street, usurarius, Petrus Miago Vallisoleti, in templo Sancti Stephani, Franciscus Duarte de Mendico, a proveedor de los exercitos y armadas del emperador Carlo V, Henricus, Walliae princeps ; Milo, comes de Anglera, pater Rolandi, a Mauris juxta ripam Ceae occisus, Hecuba, S. Edmundus, rex et martyr, Pindarus, poeta lyricus, Stesichorus, Anacreon, poeta vinosus, Leonidas, dux Lacedemoniorum ad Thermopylas occisus contra Persas, Timotheus, citharedus milesius ; Timocreon Rhodius, Laïs, meretrix Corinthia, sepulta in Thessalia, juxta Peneum fluvium, Acron, antiquissimus medicus Agrigentinus

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Professor of Chemistry and former Dean of Math and Sciences.

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This study is a secondary data analysis of the Trends in Mathematics and Science Study 2003 (TIMSS) to determine if there is a gender bias, unbalanced number of items suited to the cognitive skill of one gender, and to compare performance by location. Results of the Grade 8, math portion of the test were examined. Items were coded as verbal, spatial, verbal /spatial or neither and as conventional or unconventional. A Kruskal- Wallis was completed for each category, comparing performance of students from Ontario, Quebec, and Singapore. A Factor Analysis was completed to determine if there were item categories with similar characteristics. Gender differences favouring males were found in the verbal conventional category for Canadian students and in the spatial conventional category for students in Quebec. The greatest differences were by location, as students in Singapore outperformed students from Canada in all areas except for the spatial unconventional category. Finally, whether an item is conventional or unconventional is more important than whether the item is verbal or spatial. Results show the importance of fair assessment for the genders in both the classroom and on standardized tests.

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We explored the potential mediating influence of physical fitness on the relationship between academic performance and motor proficiency in children. 1864 students (F:926, M:938, age 11.91 (SD:0.34). Academic achievement was derived from an average of standardized tests of reading, writing, and math. The Bruininks-Oseretsky Test of Motor Performance (short-form) determined motor proficiency. Fitness (peak oxygen uptake) was established with the Léger 20-m Shuttle Run Test. OLS regression identified several significant predictors of academic performance. After controlling for age (p=0.0135), gender (p<0.0001), and parental education (p<0.0001), motor proficiency (p<0.0001), was significant. After adding physical fitness (p=0.0030) to the model the effect of motor proficiency remained significant however the point estimate was reduced from 0.0034 (p<0.0001) to 0.0026 (p<0.0001). These results suggest that physical fitness plays a mediating role on the relationship between academic performance and motor proficiency although both aerobic fitness and motor proficiency have independent roles.