1,912 research outputs found
Lost in Transition? The returns to education acquired under communism 15 years after the fall of the Berlin Wall
Using data for 23 economies in Eastern and Western Europe, we find evidence that having studied under communism is relatively penalized in the economies of the late 2000s. This evidence, however, is limited to males and to primary and secondary education, and holds for eight CEE economies but not for the East Germans who have studied in the former German Democratic Republic. We also find that post-secondary education acquired under communism yields higher, not lower, payoffs than similar education in Western Europe.
Lost in Transition? The Returns to Education Acquired under Communism 15 Years after the Fall of the Berlin Wall
Using data for 22 economies in Eastern and Western Europe, we find evidence that having studied under communism is relatively penalized in the economies of the late 2000s. This evidence, however, is limited to males and to primary and secondary education, and holds for eight CEE economies but not for the East Germans who have studied in the former German Democratic Republic. We also find that post-secondary education acquired under communism yields higher, not lower, payoffs than similar education in Western Europe.returns to education, Eastern Europe
Lost in transition? The returns to education acquired under communism 15 years after the fall of the Berlin Wall
Using data for 22 economies in Eastern and Western Europe, we find evidence that having studied under communism is relatively penalized in the economies of the late 2000s. This evidence, however, is limited to males and to primary and secondary education, and holds for eight CEE economies but not for the East Germans who have studied in the former German Democratic Republic. We also find that post-secondary education acquired under communism yields higher, not lower, payoffs than similar education in Western Europe
Mental health and education decisions
Mental health problems - and depression in particular - have been rising internationally. The link between poor mental health and poor educational outcomes is particularly interesting in the case of the UK which has a low international ranking both on measures of child wellbeing and the probability of early drop-out from the labour market and education. We study this issue using a large longitudinal study of a recent cohort of teenagers in England. We use the General Health Questionnaire to derive measures of poor mental health. We find a large negative association between mental health problems and educational outcomes - where we consider examination results before leaving compulsory education and the probability of being not in education, employment or training at a young age. The association is large even after including a very rich set of controls. Results are stronger for girls and also vary according to the different components of the mental health measure. We also explore the potential role of intermediary mechanisms (truancy and risky behaviors)
Electrophysiological manifestations in adults with HIV/AIDS submitted and not submitted to antiretroviral therapy
TEMA: os potenciais evocados auditivos (PEA) avaliam a atividade neuroelétrica na via auditiva, desde o nervo auditivo até o córtex cerebral, em resposta a um estímulo ou evento acústico. Estudos demonstram anormalidades eletrofisiológicas em indivíduos com HIV/AIDS. OBJETIVO: caracterizar as manifestações eletrofisiológicas da audição em adultos com HIV/AIDS, comparando os resultados obtidos no grupo exposto a tratamento anti-retroviral com os obtidos no grupo não exposto a tratamento. MÉTODO: realizada avaliação eletrofisiológica da audição (PEATE, PEAML e P300) em 56 indivíduos portadores do HIV/AIDS, sendo 24 do Grupo I (não expostos ao tratamento anti-retroviral) e 32 do Grupo II (expostos ao tratamento). RESULTADOS: foram encontradas alterações em todos os PEA nos indivíduos com HIV/AIDS, principalmente no PEATE; sendo que neste, o grupo exposto ao tratamento antiretroviral apresentou mais alterações. CONCLUSÃO: indivíduos com HIV/AIDS podem apresentar alterações no sistema nervoso auditivo periférico e central, sendo que o grupo exposto a tratamento anti-retroviral apresenta mais alterações na via auditiva em tronco encefálico.BACKGROUND: auditory evoked potentials (AEP) assess the neuroelectric activity on the auditory pathway -from the auditory nerve to the cerebral cortex - in response to an acoustic stimulus or event. Studies have demonstrated electrophysiological abnormalities in individuals with HIV/AIDS. AIM: to characterize the hearing electrophysiological manifestations in adults with HIV/AIDS by comparing the results obtained in the group exposed to antiretroviral therapy with those obtained in the group not exposed to such treatment. METHOD: electrophysiological evaluation of hearing (Auditory Brainstem Response - ABR, Auditory Middle Latency Reponse - AMLR and P300) was conducted in 56 individuals with HIV/AIDS: 24 participants composed group I (not exposed to antiretroviral treatment) and 32 participants composed group II (exposed to treatment). RESULTS: alterations in every AEP were observed in individuals with HIV/ AIDS, especially in the ABR. Indeed, the group exposed to antiretroviral treatment presented more alterations. CONCLUSION: individuals with HIV/AIDS may present alterations on the central and peripheral auditory nervous system. The group exposed to antiretroviral therapy presents more alterations on the brainstem auditory pathway
Auditory evoked potentials and multiple sclerosis
Multiple sclerosis (MS) is an inflammatory, demyelinating disease that can affect several areas of the central nervous system. Damage along the auditory pathway can alter its integrity significantly. Therefore, it is important to investigate the auditory pathway, from the brainstem to the cortex, in individuals with MS. Objective: the aim of this study was to characterize auditory evoked potentials in adults with MS of the remittent-recurrent type. Method: the study comprised 25 individuals with MS, between 25 and 55 years, and 25 age- and gender-matched healthy controls (research and control groups). Subjects underwent audiological and electrophysiological evaluations. Results: Statistically significant differences were observed between the groups regarding the results of the auditory brainstem response and the latency of the Na and P300 waves. Conclusion: Individuals with MS present abnormalities in auditory evoked potentials indicating dysfunction of different regions of the central auditory nervous system.Univ São Paulo FMUSP, Auditory Evoked Potentials Lab, Sch Med, Speech Pathol & Audiol Course, São Paulo, BrazilUniv São Paulo FMUSP, Speech Pathol & Audiol Course, São Paulo, BrazilUniversidade Federal de São Paulo, São Paulo Hosp, São Paulo, BrazilFMUSP, Rehabil Sci Program, São Paulo, BrazilUniversidade Federal de São Paulo, São Paulo Hosp, São Paulo, BrazilWeb of Scienc
Virtual reality navigation system for prostate biopsy
Prostate cancer is the most common non-cutaneous cancer in America. Tumor detection involves non-invasive screening tests, but positive results must be confirmed by a prostate biopsy. About twelve random samples are obtained during the biopsy, which is a systematic procedure traditionally performed with trans-rectal ultrasound (TRUS) guidance to determine prostate location. Recently, methods of fusion between TRUS and preoperative MRI have been introduced in order to perform targeted biopsies aimed to reduce the number of samples to few suspicious areas. Since the TRUS displaces the prostate during the procedure, the preoperative MRI does not match patient anatomy. Therefore, complex MRI deformation algorithms are needed. However, despite the substantial increase in complexity and cost, there is no strong evidence that the TRUS-MRI fusion actually improves accuracy and surgical outcomes. This paper presents an innovative virtual reality surgical navigation system for performing targeted prostate biopsies, without the need of the uncomfortable TRUS. Both biopsy needle and patient anatomy are constantly tracked by an electromagnetic tracking system that provides their 3D position and orientation with respect to the surgical bed. Multiple fiducial markers are placed on the patient skin (at the iliac crest and pubic bone) during MRI scanning. Once in the operative room, the surgeon is presented a stereoscopic 3D volumetric rendering and multiple orthogonal views of the patient anatomy, as well as a virtual representation of the tracked needle. After a simple registration process between the MRI and the tracker coordinate system, the navigation system guides the needle insertion in the patient perineum through several anatomical layers towards the biopsy targets
Audiological manifestations in children and adults with AIDS
BACKGROUND: according to the literature, the incidence of hearing impairment in patients with HIV / AIDS might be caused by alterations in external, middle and / or internal ear. AIM: to characterize and to compare the results of audiological assessment and Auditory Brainstem Response in children and adults with AIDS. METHOD: audiological and electrophysiological (Auditory Brainstem Response) assessment of hearing was carried out in 51 children and 22 adults with HIV/AIDS (research groups I and II, respectively) and in 50 healthy children and 25 healthy adults (control groups I and II, respectively). Participants ranged in age between 3 and 10 years (children) and between 18 and 50 years (adults). RESULTS: the most frequent observed alteration for children with AIDS was related to the middle ear whereas for adults with AIDS it was related to the internal ear. Higher occurrence of abnormal results was observed for adults with AIDS as compared to children with AIDS. CONCLUSION: children and adults with AIDS present alterations in audiological assessment and Auditory Brainstem Response. This suggests the involvement of peripheral and central auditory pathways. Findings of the present study emphasize the effectiveness of using electrophysiological hearing measures in order to better identify the brain injury level in patients with AIDS, besides allowing the monitoring of the development rate of the disease.TEMA: a literatura relata a ocorrência de alteração auditiva em pacientes com HIV/AIDS, podendo esta ser decorrente de comprometimentos na orelha externa, média e/ou interna. OBJETIVOS: caracterizar e comparar os resultados da avaliação audiológica e do Potencial Evocado Auditivo de Tronco Encefálico de crianças e adultos com AIDS. MÉTODOS: foram submetidos à avaliação audiológica e eletrofisiológica (Potencial Evocado Auditivo de Tronco Encefálico) 51 crianças e 22 adultos com AIDS (grupos pesquisa I e II respectivamente) e 50 crianças e 25 adultos saudáveis (grupos controle I e II respectivamente), com idade entre três e 10 anos (crianças) e entre 18 e 50 anos (adultos). RESULTADOS: nas crianças com AIDS foram mais frequentes as alterações de orelha média e nos adultos as de orelha interna, bem como maior ocorrência de resultados alterados no potencial evocado auditivo de tronco encefálico nos adultos quando comparados às crianças. CONCLUSÃO: crianças e adultos com AIDS apresentam alterações na avaliação audiológica e no potencial evocado auditivo de tronco encefálico, sugestivas de comprometimento das vias auditiva periférica e central. Os resultados enfatizam a eficácia da utilização dos testes eletrofisiológicos da audição para melhor definição do grau de lesão encefálica em pacientes com AIDS, permitindo ainda a monitorização da velocidade de evolução da doença.Universidade Federal de São Paulo (UNIFESP)FMUSP Departamento de Fisioterapia, Fonoaudiologia e Terapia OcupacionalUNIFESPSciEL
The Suceava oak chronology: A new 804 years long tree-ring chronology bridging the gap between central and south Europe
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