ANALYSIS OF A FIN DRAG FORCE IN A BIOMIMETIC UNDERWATER VEHICLE

This article presents the analysis of fin drag force in a Biomimetic Underwater Vehicle (BUV). To carry out numerical simulations Incompressible Computational Fluid Dynamics (ICFD) solver was used. The simulation model was verified in the designed laboratory test stand. The laboratory test stand was equipped with specialized sensors for force measurements and control of fluid velocity. An average value of fluid velocity in the water tunnel was measured by specialized high accuracy ultrasonic flowmeter. A vision system was used for analysis of laminar and turbulent flows in the fluid structure interaction area. The research of fluid-structure interaction phenomena was depicted using dimensional analysis

Negative affectivity moderates the relationship between attentional control and focused skin picking

Very little is known about the cognitive functioning of people with body-focused repetitive behaviours and the few existing studies provide mixed findings. The aim of this study was to investigate the interplay between attentional control, negative affectivity, and focused skin picking. We hypothesized that the control of attention is associated with focused style of skin picking and that this relationship is moderated by negative affectivity. The final sample consisted of 273 non-clinical subjects (79% women) aged 18 to 54 years; study variables were assessed using questionnaires. Moderation analysis was conducted, followed by a simple slope analysis, and the Johnson-Neyman technique was used to probe the interaction effect. We found that at the low level of negative affectivity, the relationship between attentional control and focused skin picking is negative, but not at the higher levels of this trait. Interestingly, when negative affectivity reaches very high intensity, the association between attentional control and skin picking becomes positive. This relationship seems to be quite complex and may depend on the way that cognitive abilities are used by the individual, as well as on the stage of cognitive processing that they are applied to. Further studies using behavioural measures of attention are needed to better understand this issue

Detection of discoloration in diesel fuel based on gas chromatographic fingerprints

In the countries of the European Community, diesel fuel samples are spiked with Solvent Yellow 124 and either Solvent Red 19 or Solvent Red 164. Their presence at a given concentration indicates the specific tax rate and determines the usage of fuel. The removal of these so-called excise duty components, which is known as fuel "laundering", is an illegal action that causes a substantial loss in a government's budget. The aim of our study was to prove that genuine diesel fuel samples and their counterfeit variants (obtained from a simulated sorption process) can be differentiated by using their gas chromatographic fingerprints that are registered with a flame ionization detector. To achieve this aim, a discriminant partial least squares analysis, PLS-DA, for the genuine and counterfeit oil fingerprints after a baseline correction and the alignment of peaks was constructed and validated. Uninformative variables elimination (UVE), variable importance in projection (VIP), and selectivity ratio (SR), which were coupled with a bootstrap procedure, were adapted in PLS-DA in order to limit the possibility of model overfitting. Several major chemical components within the regions that are relevant to the discriminant problem were suggested as being the most influential. We also found that the bootstrap variants of UVE-PLS-DA and SR-PLS-DA have excellent predictive abilities for a limited number of gas chromatographic features, 14 and 16, respectively. This conclusion was also supported by the unitary values that were obtained for the area under the receiver operating curve (AUC) independently for the model and test sets

Validation and psychometric properties of the Polish version of the Skin Picking Scale-Revised

The Skin Picking Scale-Revised (SPS-R) is an 8-item self-report measure of skin picking behaviors. It includes two subscales related to skin picking symptom severity and picking-related impairments. The study aimed to assess the psychometric properties of the Polish version of the SPS-R in a sample of adults reporting skin picking. The sample of 764 participants was recruited from the general population through an online survey. Among them, 159 meet the criteria of pathological skin picking applied in the original SPS-R validation study, and 57 endorsed all of the DSM-5 criteria for excoriation disorder. The SPS-R was back-translated into Polish. Factor structure, reliability, convergent and divergent validity, and diagnostic accuracy were assessed. Confirmatory factor analyses revealed a two-factor structure of the scale. High internal consistency and convergent and divergent validity were confirmed for the total score as well as for the subscales. High prognostic ability of the SPS-R total score was also demonstrated using ROC analysis: ≥5 was accepted as an optimal cut-off point for distinguishing skin picking sufferers from healthy controls. The Polish version of the SPS-R shows good psychometric properties and appears to be a reliable measure of skin picking symptoms and picking-related impairment

Wokół rekodyfikacji prawa cywilnego. Prace jubileuszowe

Praca recenzowana / Peer-reviewed paperPrezentowana książka to głos w debacie nad stanem naszej kodyfikacji cywilnej. Jubileusz 50-lecia uchwalenia Kodeksu cywilnego, Kodeksu rodzinnego i opiekuńczego oraz Kodeksu postępowania cywilnego zbiega się z jubileuszem Profesora Janusza Szwai1. Profesor, wybitny cywilista, obchodzi swoje 80. urodziny, mija także 50 lat od obrony przez Niego doktoratu. Jest to doskonała okazja by przyjrzeć się propozycjom zmian prawa cywilnego płynących z różnych środowisk akademickich. Wszak dużą część swojego życia Profesor Szwaja poświęcił pracom legislacyjnym, ich komentowaniu czy krytykowaniu. Sam aktywnie w zmianach różnych kodyfikacji uczestniczył. Jego poglądy zawsze były wyważone. Dziś właśnie taki wyważony głos w dyskusji nad kształtem polskiego prawa cywilnego stał się niezbędny

Observation of tW production in the single-lepton channel in pp collisions at root s=13 TeV

A measurement of the cross section of the associated production of a single top quark and a W boson in final states with a muon or electron and jets in proton-proton collisions at root s = 13 TeV is presented. The data correspond to an integrated luminosity of 36 fb(-1) collected with the CMS detector at the CERN LHC in 2016. A boosted decision tree is used to separate the tW signal from the dominant t (t) over bar background, whilst the subleading W+jets and multijet backgrounds are constrained using data-based estimates. This result is the first observation of the tW process in final states containing a muon or electron and jets, with a significance exceeding 5 standard deviations. The cross section is determined to be 89 +/- 4 (stat) +/- 12 (syst) pb, consistent with the standard model.Peer reviewe

Discutindo a educação ambiental no cotidiano escolar: desenvolvimento de projetos na escola formação inicial e continuada de professores

A presente pesquisa buscou discutir como a Educação Ambiental (EA) vem sendo trabalhada, no Ensino Fundamental e como os docentes desta escola compreendem e vem inserindo a EA no cotidiano escolar., em uma escola estadual do município de Tangará da Serra/MT, Brasil. Para tanto, realizou-se entrevistas com os professores que fazem parte de um projeto interdisciplinar de EA na escola pesquisada. Verificou-se que o projeto da escola não vem conseguindo alcançar os objetivos propostos por: desconhecimento do mesmo, pelos professores; formação deficiente dos professores, não entendimento da EA como processo de ensino-aprendizagem, falta de recursos didáticos, planejamento inadequado das atividades. A partir dessa constatação, procurou-se debater a impossibilidade de tratar do tema fora do trabalho interdisciplinar, bem como, e principalmente, a importância de um estudo mais aprofundado de EA, vinculando teoria e prática, tanto na formação docente, como em projetos escolares, a fim de fugir do tradicional vínculo “EA e ecologia, lixo e horta”.Facultad de Humanidades y Ciencias de la Educació

Social functioning of adolescents with physical disability - mental resistance and body image.

Niepełnosprawność ruchowa jest zjawiskiem, które może dotknąć człowieka w każdym momencie jego życia i, najczęściej, nie jest czymś, co można przewidzieć. Od wielu różnych czynników zależy, co stanie się z osobą dalej, w jaki sposób poradzi sobie (lub nie) z tą trudnością. Natomiast co dzieje się w przypadku dziecka, które rodzi się niepełnosprawne? Na to właśnie pytanie stara się odpowiedzieć niniejsza praca. Poniżej zaprezentowano opisi charakterystykę młodzieży z wrodzoną niepełnosprawnością ruchową ze szczególnym uwzględnieniem ich odporności psychicznej, obrazu ciała oraz rozwoju społecznego.Praca składa się z trzech części. W pierwszej z nich przedstawiono tło teoretyczne dotyczące takich zjawisk jak niepełnosprawność, głównie ruchowa, obraz ciała, rozwój społeczny oraz odporność psychiczna. Wszystkie te elementy są charakteryzowane w szerokim kontekście rozwojowym, ze szczególnym uwzględnieniem teorii rozwoju psychospołecznego Erika Eriksona oraz z naciskiem na adolescencję jako kluczowy, dla rozwoju tożsamości, etap rozwojowy. Druga część dotyczy metodologii prowadzonych badań, przedstawia ich cel i pytania badawcze, a także charakteryzuje badaną grupę oraz zastosowane narzędzia. W części trzeciej zawarta jest analiza uzyskanego materiału empirycznego, podsumowanie oraz dyskusja.Badania prowadzone na potrzeby niniejszej pracy miały charakter jakościowy. Wzięło w nich udział pięć dziewcząt poruszających się na wózkach w wieku od 12 do 16 roku życia. Ich niepełnosprawność jest wrodzona i wynika z przepukliny oponowo – rdzeniowej oraz mózgowego porażenia dziecięcego. Respondentki należą do Fundacji Aktywnej Rehabilitacji w Krakowie, gdzie uczestniczą w różnego rodzaju zajęciach i tam też były prowadzone badania. Uzyskane wyniki wskazują na wysoki poziom odporności psychicznej u dziewcząt,a wśród czynników składających się na resilience najwyższym u wszystkich okazało się poczucie humoru i otwartość na nowe doświadczenia. Badane posiadają raczej pozytywny obraz własnego ciała, a jednocześnie wszystkie oceniają przynajmniej jedną część kończyn dolnych jako sprawiającą trudności. W zakresie rozwoju społecznego można zaobserwować pozytywne przystosowanie, aczkolwiek wyniki w zakresie rozwiązania kryzysów właściwych dla aktualnego etapu rozwojowego są mieszane.Innate physical disability has an influence to whole development of a person. This study aimed to describe specifics of adolescents with physical disability, especially their social development, body image and mental resistance (resilience). Five females aged between 12 and 16 years participated in this study: four participants with spinal cord herniation and one with cerebral palsy. The respondents belong to Foundation for Active Rehabilitation in Cracow. The results showed that adolescents with physical disability have high mental resistance and the strongest factor in this area is sense of humor and openness to new experiences. Body image is mostly positive, although young girls reports that some parts of their lower limbs cause problems. Positive adaptation can be observed in the area of social development, however the results concerning the crisis related to this stage of development are ambivalent

The role of expressive suppression in hallucinatory-like and delusion-like experiences : findings in a non-clinical sample

Introduction: previous works concerning emotion regulation in psychosis highlighted the relationship between expressive suppression and negative psychotic symptoms, as well as between expressive suppression and auditory hallucinations. However, a direct association between suppression and delusions has not been observed. In the study we examined whether expressive suppression is associated with psychotic-like experiences and whether it may influence delusion-like experiences by changing the impact of cognitive biases on delusional beliefs. Methods: two hundred and twenty-one healthy individuals never diagnosed with psychiatric disorders completed self-report questionnaires measuring: delusion-like experiences, hallucinatory-like experiences, cognitive biases and expressive suppression. Regression and moderation analyses were performed. Results: regression analyses revealed that the overall level of suppression predicts hallucinatory-like experiences, but not delusion-like experiences. Suppression of anxiety and suppression of sadness were significant predictors of hallucinatory-like experiences, whereas suppression of anxiety predicted delusion-like experiences. A moderation analysis indicated that both the overall level of suppression and suppression of sadness moderate the relationship between belief inflexibility and delusion-like experiences in such a way that belief inflexibility increases delusion-like experiences only among individuals reporting a low level of suppression. Conclusions: our findings confirmed that expressive suppression has a direct impact on hallucinatory-like experiences and suggest that the use of suppression may influence delusion-like experiences by moderating the impact of belief inflexibility on delusional thinking