23 resultados para covert recordings

em Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland


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Julkaisumaa: 530 AN ANT Alankomaiden Antillit

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Artikkeli on julkaistu Hymnologi - Nordiskt tidskirft -lehden numerossa 3-4 / 2012.

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Vapaakappalekartuntaan perustuva tilasto Suomessa julkaistuista musiikkiäänitteistä vuodesta 1995 lähtien

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Vapaakappalekartuntaan perustuva tilasto Suomessa julkaistuista puheäänitteistä vuodesta 1995 lähtien

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There is increasing evidence to support a significant role for chronic non-bacterial, prostatic inflammation in the development of human voiding dysfunction and prostate cancer. Their increased prevalence with age suggests that the decrease of testosterone concentration and/or the ratio of testosterone-to-estradiol in serum may have a role in their development. The main objective of this study was to explore prostatic inflammation and its relationship with voiding dysfunction and prostate carcinogenesis by developing an experimental model. A novel selective estrogen receptor modulator (SERM), fispemifene, was tested for the prevention and treatment of prostatic inflammation in this model. Combined treatment of adult Noble rats with testosterone and estradiol for 3 to 6 weeks induced gradually developing prostatic inflammation in the dorsolateral prostatic lobes. Inflammatory cells, mainly T-lymphocytes, were first seen around capillaries. Thereafter, the lymphocytes migrated into the stroma and into periglandular space. When the treatment time was extended to 13 weeks, the number of inflamed acini increased. Urodynamical recordings indicated voiding dysfunction. When the animals had an above normal testosterone and estradiol concentrations but still had a decreased testosterone-to-estradiol ratio in serum, they developed obstructive voiding. Furthermore, they developed precancerous lesions and prostate cancers in the ducts of the dorsolateral prostatic lobes. Interestingly, inflammatory infiltrates were observed adjacent to precancerous lesions but not in the adjacency of adenocarcinomas suggesting that inflammation has a role in the early stages of prostate carcinogenesis. Fispemifene, a novel SERM tested in this experimental model, showed anti-inflammatory action by attenuating the number of inflamed acini in the dorsolateral prostate. Fispemifene exhibited also antiestrogenic properties by decreasing expression of estrogen-induced biomarkers in the acinar epithelium. These findings suggest that SERMs could be considered as a new therapeutic possibility in the prevention and in the treatment of chronic prostatic inflammation

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This thesis is an experimental study regarding the identification and discrimination of vowels, studied using synthetic stimuli. The acoustic attributes of synthetic stimuli vary, which raises the question of how different spectral attributes are linked to the behaviour of the subjects. The spectral attributes used are formants and spectral moments (centre of gravity, standard deviation, skewness and kurtosis). Two types of experiments are used, related to the identification and discrimination of the stimuli, respectively. The discrimination is studied by using both the attentive procedures that require a response from the subject, and the preattentive procedures that require no response. Together, the studies offer information about the identification and discrimination of synthetic vowels in 15 different languages. Furthermore, this thesis discusses the role of various spectral attributes in the speech perception processes. The thesis is divided into three studies. The first is based only on attentive methods, whereas the other two concentrate on the relationship between identification and discrimination experiments. The neurophysiological methods (EEG recordings) reveal the role of attention in processing, and are used in discrimination experiments, while the results reveal differences in perceptual processes based on the language, attention and experimental procedure.

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Chorioamnionitis is known to be an important risk factor underlying preterm delivery, and it has also been suggested to associate with brain lesions and deviant neurological development in both preterm and term infants. Cytokines are believed to be the link causing the deleterious effects of inflammation to the nervous system. Their genetic regulation has also been suggested to play a role, as interleukin (IL)-6 -174 and -572 genotypes, which partly regulate IL-6 synthesis responses, have been connected with deviant neurological development in preterm infants. We evaluated the association of histological chorioamnionitis with brain lesions, regional brain volumes, and the functioning of the auditory pathway in very low birth weight/very low gestational age (VLBW/VLGA) infants. In addition, we investigated the association between IL-6 -174 and -572 genotypes and histological chorioamnionitis, neonatal infections, and brain lesions and regional brain volumes in VLBW/VLGA infants. This study is a part of a larger multidisciplinary project PIPARI (Development and Functioning of Very Low Birth Weight Infants from Infancy to School Age), in which the survivors of a 6-year cohort of VLBW/VLGA infants (n=274) are being followed until school age in Turku University Central Hospital, Finland. Placental samples were collected in the delivery room, and were analyzed for histological inflammatory findings. Blood samples from the infants were collected and DNA was genotyped for IL-6-174 and -572 polymorphisms (GG/GC/CC). Brain ultrasound examinations were performed repeatedly in the neonatal intensive care unit and at term age, and were analysed for structural brain lesions. Brain magnetic resonance imaging was performed at term age, and was analysed for regional brain volumes. In addition, diffusion tensor imaging was performed at term, and was used to analyse fractional anisotrophy and the apparent diffusion coefficient of inferior colliculus. The brainstem auditory evoked potential recordings were carried out according to the routine clinical procedure at median age of 30 days after term age. In our study, we found that histological chorioamnionitis was not an independent risk factor for brain lesions, reduced regional brain volumes or abnormal functioning of the auditory pathway in VLBW/VLGA infants. In addition, we found that IL-6 -174 GG and -572 GC genotypes were associated with a higher incidence of histological chorioamnionitis, and that -174 CC genotype associated with higher incidence of septicaemia. The analysed IL-6 genotypes were not associated with other brain lesions, but a reduced volume of basal ganglia and thalami was associated with IL-6 -174 CC and -572 GG genotypes. In conclusion, our findings suggest that histological chorioamnionitis is not an independent risk factor for the brain development of VLBW/VLGA infants, or that the risk caused by inflammation does not exceed the risks attributed to other underlying pathologies behind preterm deliveries. In addition, our findings give reason to propose that IL-6 promoter genotypes have a role in the defence against serious infections and in the brain development of VLBW/VLGA infants.

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Vanhemmat keskoslasten kivun lievittäjinä Tutkimuksen tarkoituksena oli kehittää uusi kivunlievitysmenetelmä, Vanhempien käsikapalo, keskoslasten kivunhoitoon vastasyntyneiden teho-osastolla. Vanhempien käsikapalon tehokkuutta verrattiin kahdessa satunnaistetussa kontrolloidussa crossover-tutkimusasetelmassa ei-lääkkeelliseen näyttöön perustuvaan hoitoon (P.O. glukoosiliuos), lääkkeelliseen menetelmään (I.V. oksikodoni) ja lumeeseen (P.O. vesi) tai kontrolli hoitoon kantapääpiston ja hengitysteiden imemisen aikana. Lisäksi mitattiin kivunhoidon lyhytaikaisia sivuvaikutuksia (hapetuksen- ja pulssinlasku) ja pidempiaikaisia vaikutuksia uneen. Tutkittujen lasten ikä oli 28 raskausviikkoa (n = 20) ja 28 1/7 (n = 20). Toimenpidekipua arvioitiin Premature Infant Pain Profile (PIPP) -kipumittarilla. Interventioiden jälkeen unen rakenne analysoitiin 13 tunnin polysomnografia-rekisteröinneistä. Viimeisessä vaiheessa haastateltiin äitejä (n = 23), jotka olivat käyttäneet vanhempien käsikapaloa 2–4 viikkoa vastasyntyneiden teho-osastolla, strukturoidulla the Clinical Interview for Parents of High-Risk Infants -haastattelulla, johon oli lisätty kysymyksiä lapsen kivunhoidosta. Kantapääpiston aikana PIPP–pisteet olivat merkitsevästi matalampia P.O. glukoosiliuoksella (ka 4,85 ± 1,73, p ≤ 0,001) ja vanhempien käsikapalolla (ka 5,20 ± 1,70, p = 0,004) verrattuna lumeeseen (ka 7,05 ± 2,16). Hengitysteiden imemisen yhteydessä PIPP–pisteet olivat matalampia P.O. glukoosiliuoksella (ka 11,05 ± 2,31, p = 0,014) ja vanhempien käsikapalolla (ka 11,25 ± 2,47, p = 0,034) verrattuna lumeeseen (ka 12,40 ± 2,06). Oksikodonin teho oli verrattavissa lumeeseen kummankin toimenpiteen aikana. P.O. glukoosiliuoksen (21,3 %) ja lumeen (12,5 %) annosteluun liittyi merkittävästi enemmän lyhytaikaisia sivuvaikutuksia verrattuna oksikodoniin (5 %) tai vanhempien käsikapaloon (5 %). Oksikodoni muutti keskoslasten unen rakennetta vähentämällä merkittävästi aktiivisen unen määrää verrattuna muihin hoitoihin. Vanhemmat suhtautuivat positiivisesti käsikapalon käyttöön. Äitien osallistuminen kivunhoitoon voitiin jaotella kolmeen eri tyylin, jotka selittyivät äidin kiintymyksen tunteilla ja lapsen tehohoitoon liittyvällä stressillä. Vanhempien käsikapalo on suositeltavampi lyhyen toimenpidekivun lievittäjä kuin P.O. glukoosiliuos tai I.V. oksikodoni, kun tehokkuus, turvallisuus ja perhe otetaan huomioon.

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This research is a phenomenological-hermeneutic case-study based on the methods of action research in which narrative methods are used to examine a process drama carried out in a day-care centre, focusing on its dialogicality and possibilities of offering children and adults ethical problems to examine and solve. A process drama built around a story was carried out in a Finnish day-care centre in 1999 with the aim of bringing ethical education to the level of conscious consideration and action. The research consists of two case-studies. The first focuses on Risto, one of the children who participated in the process, his actions in group situations, his commitment to the rules set by the leaders, his attitude towards the group and its members as well as the common agreements concerning the group, and his solutions to fictive dilemmas in relation to Lawrence Kohlberg’s and Carol Gilligan’s concepts of justice and care. On this basis conclusions are made on how drama can be applied to dealing with ethical dilemmas with children aged four to seven. The second case-study searches for ethical themes and signs of dialogicality in the story that was created together by the children and leaders, and in the action that took place in the drama sessions. The subjects of this study consist of two groups participating in the process drama, both consisting of seven children aged four to seven. Narratives were written on each child based on his/her participation in four drama sessions selected to be used in this study. The narratives include the writer’s interpretations of the dialogicality of the drama and the ethical themes observed and recognised in the videos and in the transcriptions of the video recordings. The description and interpretation of the dialogicality and the ethical themes observed in the drama sessions is based on the researcher’s dialogue with the writings of Georg Henrik von Wright, Martin Buber and Mihail Bahtin, as well as Nicholas C. Burbules’ definitions of the basic conditions for dialogical teaching. As a result of the study, drama activity proved to be a means by which dialogically abstract ethical questions and conflicts could be dealt with even with young children and which revealed the zone of proximal development of both children and adults. Drama became a stage for ethical growth and dialogicality, and the common play of children and adults could be seen as an indicator of deep dialogicality. On the basis of this study, it can be said that drama is a very suitable way of establishing a shape and form of ethical education in which it is possible to make planned, target-oriented progress and which can be consciously observed by following the development of both the child and the educator.

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Kirjallisuusarvostelu

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Preattentive perception of occasional deviating stimuli in the stream of standard stimuli can be recorded with cognitive event-related potential (ERP) mismatch negativity (MMN). The earlier detection of stimuli at the auditory cortex can be examined with N1 and P2 ERPs. The MMN recording does not require co-operation, it correlates with perceptual threshold, and even complex sounds can be used as stimuli. The aim of this study was to examine different aspects that should be considered when measuring discrimination of hearing with ERPs. The MMN was found to be stimulusintensity- dependent. As the intensity of sine wave stimuli was increased from 40 to 80 dB HL, MMN mean amplitudes increased. The effect of stimulus frequency on the MMN was studied so that the pitch difference would be equal in each stimulus block according to the psychophysiological mel scale or the difference limen of frequency (DLF). However, the blocks differed from each other. The contralateral white noise masking (50 dB EML) was found to attenuate the MMN amplitude when the right ear was stimulated. The N1 amplitude was attenuated and, in contrast, P2 amplitude was not affected by contralateral white noise masking. The perception and production of vowels by four postlingually deafened patients with a cochlear implant were studied. The MMN response could be elicited in the patient with the best vowel perception abilities. The results of the studies show that concerning the MMN recordings, the stimulus parameters and recording procedure design have a great influence on the results.

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Personalised ubiquitous services have rapidly proliferated due technological advancements in sensing, ubiquitous and mobile computing. Evolving societal trends, business and the economic potential of Personal Information (PI) have overlapped the service niches. At the same time, the societal thirst for more personalised services has increased and are met by soliciting deeper and more privacy invasive PI from customers. Consequentially, reinforcing traditional privacy challenges and unearthed new risks that render classical safeguards ine ective. The absence of solutions to criticise personalised ubiquitous services from privacy perspectives, aggravates the situation. This thesis presents a solution permitting users' PI, stored in their mobile terminals to be disclosed to services in privacy preserving manner for personalisation needs. The approach termed, Mobile Electronic Personality Version 2 (ME2.0), is compared to alternative mechanisms. Within ME2.0, PI handling vulnerabilities of ubiquitous services are identi ed and sensitised on their practices and privacy implications. Vulnerability where PI may leak through covert solicits, excessive acquisitions and legitimate data re-purposing to erode users privacy are also considered. In this thesis, the design, components, internal structures, architectures, scenarios and evaluations of ME2.0 are detailed. The design addresses implications and challenges leveraged by mobile terminals. ME2.0 components and internal structures discusses the functions related to how PI pieces are stored and handled by terminals and services. The architecture focusses on di erent components and their exchanges with services. Scenarios where ME2.0 is used are presented from di erent environment views, before evaluating for performance, privacy and usability.

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Reliable detection of intrapartum fetal acidosis is crucial for preventing morbidity. Hypoxia-related changes of fetal heart rate variability (FHRV) are controlled by the autonomic nervous system. Subtle changes in FHRV that cannot be identified by inspection can be detected and quantified by power spectral analysis. Sympathetic activity relates to low-frequency FHRV and parasympathetic activity to both low- and high-frequency FHRV. The aim was to study whether intra partum fetal acidosis can be detected by analyzing spectral powers of FHRV, and whether spectral powers associate with hypoxia-induced changes in the fetal electrocardiogram and with the pH of fetal blood samples taken intrapartum. The FHRV of 817 R-R interval recordings, collected as a part of European multicenter studies, were analyzed. Acidosis was defined as cord pH ≤ 7.05 or scalp pH ≤ 7.20, and metabolic acidosis as cord pH ≤ 7.05 and base deficit ≥ 12 mmol/l. Intrapartum hypoxia increased the spectral powers of FHRV. As fetal acidosis deepened, FHRV decreased: fetuses with significant birth acidosis had, after an initial increase, a drop in spectral powers near delivery, suggesting a breakdown of fetal compensation. Furthermore, a change in excess of 30% of the low-to-high frequency ratio of FHRV was associated with fetal metabolic acidosis. The results suggest that a decrease in the spectral powers of FHRV signals concern for fetal wellbeing. A single measure alone cannot be used to reveal fetal hypoxia since the spectral powers vary widely intra-individually. With technical developments, continuous assessment of intra-individual changes in spectral powers of FHRV might aid in the detection of fetal compromise due to hypoxia.

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Konserteissa esiintyvät pianistit: Sanni Antikainen, Jarmo Eerikäinen, Laura Iacovache-Pana, Elisa Järvi, Tiina Karakorpi, Annikka Konttori-Gustafsson, Matilda Kärkkäinen, Juhani Lagerspetz, Maria Männikkö, Eduardo Palomares, Anna Ramstedt, Ilmo Ranta, Johan von Schantz, Erik T. Tawaststjerna, Hui-Ying Tawaststjerna, Emma Teronen, Stefanie Tuurna, Anu Vehviläinen.