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Search Results: 1 - 10 of 32874 matches for " Monika Thomas "
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The Effect of Different Movement Exercises on Cognitive and Motor Abilities  [PDF]
Monika Thomas
Advances in Physical Education (APE) , 2012, DOI: 10.4236/ape.2012.24030
Abstract: The influence of physical activity on motor and cognitive performance has been approved in several studies. However, it is still unclear which functions are affected, and why. It also remains unknown what type of physical training is best suitable. The present study focuses on special movement aspects based on the Brain Gym? program. Four groups of subjects (n = 64) participated in two experiments with pre-post intervention design. In experiment 1 two groups of subjects were exposed to a sensorimotor adaptation study design by executing center out pointing movements under distorted visual feedback conditions with their dominant and non-dominant arm to test for intermanual transfer (IMT) as pre- and posttest. The intervention in both groups consisted of specified movement exercises with the right and left extremities: participants of Experimental group executed movements crossing the body midline and participants of Control group movements without crossing the body midline. Results showed a decreased retention of adaptation but larger IMT for Experimental group during posttest. We conclude that movements crossing the body midline impede retention but enhance IMT of sensorimotor adaptation. A potential relationship to an improvement of communication between the cerebral hemispheres evoked by the movement exercises crossing the body midline is rather speculative. In experiment 2 two groups were exposed to the d2-test measuring concentration and attention and a dice-test testing for visual-spatial abilities as pre- and posttest. The interventions were similar to experiment 1. Results yielded no differences between groups such that different effects of both interventions could not have been shown.
Unconscious Priming of Focused Attention Reduces the Attention Deficits of ADHD Patients  [PDF]
Elaheh Hosseini, Otmar Bock, Monika Thomas
Psychology (PSYCH) , 2016, DOI: 10.4236/psych.2016.76084

We have shown before that attention deficit hyperactivity disorder (ADHD) children suffer from deficits of sustained attention, while divided, selective and distributed attention is largely spared. The present study explores whether these deficits can be ameliorated by unconscious priming of attention. Sixty children diagnosed with ADHD participated, their age ranged between eight and twelve years. Participants were primed with the scrambled sentence task: under the pretext of a language comprehension task, they were exposed to words referring to focused attention (group “focused”) or scattered attention (group “scattered”), or were not exposed to attention-related words (group “control”). All three groups were then assessed with the same battery of attention tests used in our earlier study. We found that compared to the “control” group, performance was higher in the “focused” group on tests of sustained, divided and distributed attention, and was lower in the “scattered” group on all four tests. From this we conclude that unconscious priming can modify the attention of ADHD children, and that this modification extends to the one attention component that is most affected by ADHD. Unconscious priming might therefore be an expedient supplementary method for ADHD treatment, as it can be administered at virtually no cost anytime, anywhere.

Thomas Salzberger,Monika Koller
REMark : Revista Brasileira de Marketing , 2010, DOI: 10.5585/remark.v9i1.2148
Abstract: The concept of cognitive dissonance has been an important construct in consumer behaviour research ever since it was first suggested. However, longitudinal studies on dissonance related to other post-purchase constructs such as satisfaction, loyalty and complaint behaviour are still scarce. In part, this is due to difficulties in the actual measurement of dissonance. Building upon recent contributions, the current study is concerned with the relationship between dissonance and satisfaction and their impact on loyalty and complaint behaviour. One hundred and twenty-five consumers who purchased consumer electronics or household goods were interviewed twice: at the time of purchase and three months afterwards. The results suggest that dissonance and satisfaction are complementary constructs describing different facets of the mental state of the customer after the purchase. Cognitive dissonance and satisfaction govern a different array of actions. While satisfaction has an impact on loyalty, i.e. future purchase intention and word of mouth, cognitive dissonance contributes to the explanation of complaint behaviour. Desde a primeira vez que foi sugerido, o conceito de dissonancia cognitiva tem sido uma ferramenta importante no estudo do comportamento do consumidor. Entretanto, estudos longitudinais de dissonancia relacionados a outras ferramentas pós-compra como satisfa o, lealdade e comportamento pós-insatisfa o ainda s o escassos. Isto é devido, em parte, às dificuldades em quantificar concretamente a dissonancia. Baseando-se em contribui es recentes, o presente estudo trata da rela o entre dissonancia e satisfa o e de seu impacto na lealdade e no comportamento pós-insatisfa o. Cento e vinte e cinco consumidores que compraram eletr nicos e produtos domésticos foram entrevistados duas vezes: no momento da compra e três meses depois. Os resultados sugerem que dissonancia e satisfa o s o ferramentas complementares, que descrevem diferentes faces do estado mental do consumidor depois da compra. A dissonancia cognitiva e a satisfa o governam um conjunto de a es. Enquanto a satisfa o tem um impacto na lealdade, i.e. inten o de compra futura e boca a boca, a dissonancia cognitiva contribui para explicar o comportamento pós-insatisfa o.
Schulische und nicht-schulische Pr diktoren für die Studienplatzzusage an der Universit t Witten / Herdecke - Ergebnisse einer QUEST-Analyse [Academic and non-academic predictors for acceptance to medical studies at Witten/Herdecke University - findings of a QUEST-analysis]
Hofmann, Marzellus,Rieger, Monika A.,Ostermann, Thomas
GMS Zeitschrift für Medizinische Ausbildung , 2007,
Abstract: [english] Aims: Changes within the German Higher Education Framework act increasingly attract notice to the fact that the debate on different methods of selecting students lies in the responsibility of german medical schools. For more than 20 years the University of Witten/Herdecke has adhered to its own concept and procedure relating to its choice of students. Since 2005 this application procedure consists of a written and an oral application phase (assessment center). Within this study a retrospective classification of all applicants in the year 2005 was conducted, with the objective of finding academic and non-academic predictors for acceptance at Witten/Herdecke. Methods: All 172 applicants of the assessment center received a questionnaire asking for: age, gender, high school graduation mark, type of school, main school subjects, intended career, attendance at open house, parent graduation and profession. All duly completed questionnaires were classified according to the QUEST model from the viewpoint of acceptance versus refusal to medical studies at Witten/Herdecke. Outcomes: The QUEST model classifies the items of the questionnaire in sequence of declining power and in coherence to the targeted variable (acceptance). Affiliated with an increased probability of acceptance were: high school mark = 1.3, Steiner and Montessori schools, absence at open house, intended career as researcher and natural/social sciences and languages as main school subjects. Predictor sensitivity was 0.53, specificity reached 0.92. The positive predictive value accounted for 0.77, whereas the negative predictive value was 0.83. Conclusions: The high school graduation mark shows to be of high significance for the admission process at the University of Witten/Herdecke. Furthermore factors such as type of school, intended career and main school subjects play a major role. The high negative predictive value points out that the QUEST analysis is not suitable for replacing the existing admission process, but might be used for pre-selecting candidates. Further studies have to show whether the found effects are specific to the investigated group (applicants 2005) or whether they can be seen as representative for other cohorts of applicants at Witten/Herdecke. [german] Zielsetzung: Die Auseinandersetzung mit unterschiedlichen Verfahren der Studierendenauswahl rückt durch die Novellierung des Hochschulrahmengesetzes zunehmend in den Verantwortungsbereich deutscher Fakult ten. Als private Universit t führt die Universit t Witten/Herdecke (UWH) seit 20 Jahren universit tseigene Auswah
Zosteriform verrucous epidermal nevus
Thomas Emy,Singla Monika,Shekhawat Satpal
Indian Journal of Dermatology , 2005,
Two Blind Adaptive Equalizers Connected in Series for Equalization Performance Improvement  [PDF]
Monika Pinchas
Journal of Signal and Information Processing (JSIP) , 2013, DOI: 10.4236/jsip.2013.41008

A variable step-size parameter is usually used to accelerate the convergence speed of a blind adaptive equalizer with N1 + N2 -1 coefficients where N1 and N2 are odd values. In this paper we show that improved equalization performance is achieved when using two blind adaptive equalizers connected in series where the first and second blind adaptive equalizer have N1 and N2 coefficients respectively compared with the case where a single blind adaptive equalizer is applied with N1 + N2 -1 coefficients. It should be pointed out that the same algorithm (cost function) is used for updating the filter taps for the different equalizers and that a fixed step-size parameter is used. Simulation results show that for the low signal to noise ratio (SNR) environment and for the case where the convergence speed is slow due to the channel characteristics, the new method has a faster convergence speed with a factor of approximately two while leaving the system with approximately the same or lower residual intersymbol interference (ISI).

Under What Condition Do We Get Improved Equalization Performance in the Residual ISI with Non-Biased Input Signals Compared with the Biased Version  [PDF]
Monika Pinchas
Journal of Signal and Information Processing (JSIP) , 2015, DOI: 10.4236/jsip.2015.62008
Abstract: Recently, closed-form approximated expressions were obtained for the residual Inter Symbol Interference (ISI) obtained by blind adaptive equalizers for the biased as well as for the non-biased input case in a noisy environment. But, up to now it is unclear under what condition improved equalization performance is obtained in the residual ISI point of view with the non-biased case compared with the biased version. In this paper, we present for the real and two independent quadrature carrier case a closed-form approximated expression for the difference in the residual ISI obtained by blind adaptive equalizers with biased input signals compared with the non-biased case. Based on this expression, we show under what condition improved equalization performance is obtained from the residual ISI point of view for the non-biased case compared with the biased version.
Convolutional Noise Analysis via Large Deviation Technique  [PDF]
Monika Pinchas
Journal of Signal and Information Processing (JSIP) , 2015, DOI: 10.4236/jsip.2015.64024
Abstract: Due to non-ideal coefficients of the adaptive equalizer used in the system, a convolutional noise arises at the output of the deconvolutional process in addition to the source input. A higher convolutional noise may make the recovering process of the source signal more difficult or in other cases even impossible. In this paper we deal with the fluctuations of the arithmetic average (sample mean) of the real part of consecutive convolutional noises which deviate from the mean of order higher than the typical fluctuations. Typical fluctuations are those fluctuations that fluctuate near the mean, while the other fluctuations that deviate from the mean of order higher than the typical ones are considered as rare events. Via the large deviation theory, we obtain a closed-form approximated expression for the amount of deviation from the mean of those fluctuations considered as rare events as a function of the system’s parameters (step-size parameter, equalizer’s tap length, SNR, input signal statistics, characteristics of the chosen equalizer and channel power), for a pre-given probability that these events may occur.
Convergence Curve for Non-Blind Adaptive Equalizers  [PDF]
Monika Pinchas
Journal of Signal and Information Processing (JSIP) , 2016, DOI: 10.4236/jsip.2016.71002
Abstract: In this paper a closed-form approximated expression is proposed for the Intersymbol Interference (ISI) as a function of time valid during the entire stages of the non-blind adaptive deconvolution process and is suitable for the noisy, real and two independent quadrature carrier input case. The obtained expression is applicable for type of channels where the resulting ISI as a function of time can be described with an exponential model having a single time constant. Based on this new expression for the ISI as a function of time, the convergence time (or number of iteration number required for convergence) of the non-blind adaptive equalizer can be calculated. Up to now, the equalizer’s performance (convergence time and ISI as a function of time) could be obtained only via simulation when the channel coefficients were known. The new proposed expression for the ISI as a function of time is based on the knowledge of the initial ISI and channel power (which is measurable) and eliminates the need to carry out any more the above mentioned simulation. Simulation results indicate a high correlation between the simulated and calculated ISI (based on our proposed expression for the ISI as a function of time) during the whole deconvolution process for the high as well as for the low signal to noise ratio (SNR) condition.
The Psychosocial Risks in Workplace as a Category in Research. Comparative Diagnosis  [PDF]
Monika Budnik
Open Journal of Social Sciences (JSS) , 2019, DOI: 10.4236/jss.2019.72004
Abstract: Article presents the issue of psychosocial risks from perspective diversity on culture context. This context is socially appointed through the meanings by using and conceptualization notions, legitimizing these concepts of notion in the law and through studying phenomena through tools to adequately measure the scale of occurrence of a given psychosocial threat. The main idea of this article focuses on the social constructing concepts and definitions reproduced in the society through: using the notion of psychosocial hazards, different methods and research techniques in the social sciences themselves to explore these phenomena, the different scale of the declared occurrence of social threats to the culturally diverse dimensions of national cultures. Presented areas of psychosocial risks from European perspective, contain differentiated standards which are used in theory and research. Moreover the short article presents the diverse needs of measurement methods adequate for the broad frameworks of psychosocial risks such as mobbing, harcèlement moral, stress and presenteeism.
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