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    Wyświetlanie 1-12 z 12
    Tytuł:
    Transition of emotions from the negatively excited state to positive unexcited state: an ERP perspective
    Autorzy:
    Singh, Moon Inder
    Singh, Mandeep
    Powiązania:
    https://bibliotekanauki.pl/articles/2106415.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    EEG
    emotion
    emotion transition
    arousal
    valence
    Opis:
    The cognitive aspects like perception, problem-solving, thinking, task performance, etc., are immensely influenced by emotions making it necessary to study emotions. The best state of emotion is the positive unexcited state, also known as the HighValence LowArousal (HVLA) state of the emotion. The psychologists endeavour to bring the subjects from a negatively excited state of emotion (Low Valence High Arousal state) to a positive unexcited state of emotion (High Valence Low Arousal state). In the first part of this study, a four-class subject independent emotion classifier was developed with an SVM polynomial classifier using average Event Related Potential (ERP) and differential average ERP attributes. The visually evoked Electroencephalogram (EEG) signals were acquired from 24 subjects. The four-class classification accuracy was 83% using average ERP attributes and 77% using differential average ERP attributes. In the second part of the study, the meditative intervention was applied to 20 subjects who declared themselves negatively excited (in Low Valence High Arousal state of emotion). The EEG signals were acquired before and after the meditative intervention. The four-class subject independent emotion classifier developed in Study 1 correctly classified these 20 subjects to be in a negatively excited state of emotion. After the intervention, 16 subjects self-assessed themselves to be in a positive unexcited (HVLA) state of emotion (which shows the intervention accuracy of 80%). Testing a four-class subject independent emotion classifier on the EEG data acquired after the meditative intervention validated 13 of 16 subjects in a positive unexcited state, yielding an accuracy of 81.3%.
    Źródło:
    Metrology and Measurement Systems; 2022, 29, 2; 405--423
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enhancing grammar and valence resources for Akan and Ga
    Autorzy:
    Beermann, Dorothee
    Hellan, Lars
    Linde-Usiekniewicz, Jadwiga
    Storch, Anne
    Powiązania:
    https://bibliotekanauki.pl/chapters/1040110.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
    Tematy:
    digital resources
    lexicon
    valence
    corpus annotation
    Akan
    Ga
    Opis:
    We present a case study in valence comparison between closely related Kwa languages, assessing frames and meanings of the verb ba (‘come’) in Akan with a homophonous corresponding item in Ga. The discussion draws on the Akan dictionary (Christaller 1881), a Ga valence dictionary based on (Dakubu 2009), and an online annotated corpus of Akan hosted in TypeCraft (Beermann & Mihaylov 2014). With a view to the possibility of making use of resources for one language in the development of resources for another, we demonstrate how digital resources and linguistic specifications can inform each other.
    Źródło:
    West African languages. Linguistic theory and communication; 166-185
    9788323546313
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Emotional Arousal and Valence and the Effects of Civic Education
    Autorzy:
    Wawrzyński, Patryk
    Marszałek-Kawa, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/2191735.pdf
    Data publikacji:
    2023-03-31
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    arousal
    valence
    civic education
    prosocial behaviour
    attitude change
    Opis:
    The paper discusses the influence of FaceReader-coded emotional arousal and valence on the effectiveness of civic education. The experimental design allowed the authors to observe relationships between emotional responsiveness and memorisation, attitude change, and prosocial behaviour. In the study with 90 adult participants, we video-recorded facial expressions while watching three parallel versions of a narrative on anti-communist opposition in Poland. The analysis of collected data suggested that emotional arousal is associated with prosocial behaviour and the valence of signalling with an attitude change, while cognitive effects are not related to emotional responsiveness. Moreover, civic education depends on the triad of emotions: sadness, happiness, and disgust.
    Źródło:
    The New Educational Review; 2023, 71; 168-179
    1732-6729
    Pojawia się w:
    The New Educational Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of impact of coherent light on resistance of plants growing in unfavourable environmental conditions
    Autorzy:
    Śliwka, M
    Powiązania:
    https://bibliotekanauki.pl/articles/123687.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    laser stimulation
    biostimulation
    plants resistance
    stress factors
    ecological valence
    Opis:
    The results of experiments on the effect of the coherent light emitted by lasers on plant material show that properly selected laser stimulation parameters, such as: wavelength, power, time and type of exposure, allow to obtain a greater growth of plant biomass, changes in the content of elements in the biomass and increasing plant resistance to unfavorable environmental conditions. The aim of this study was to determine the effect of laser stimulation on selected plant species (Iris pseudoacorus L., Lemna minor L.) to increase their resistance to low temperatures and the ability to adapt to an environment polluted by mining activities (Phelum pratense L.). Plants from experimental groups (Iris pseudoacorus L., Phelum pratense L., Lemna minor L.) were stimulated with coherent light with specific characteristics. To irradiate plants from experimental groups different algorithms of stimulation parameters, differentiating the method and time of exposure were used. Plants group without the stimulation, were the reference group. The article discusses the results of preliminary experiments carried out on a laboratory scale and pot experiments.
    Źródło:
    Journal of Ecological Engineering; 2014, 15, 2; 112-118
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The psycholinguistic world of “zdziwienie” - “astonishment” and “zaskoczenie” - “surprise”
    Autorzy:
    Jasielska, Aleksandra
    Powiązania:
    https://bibliotekanauki.pl/articles/430487.pdf
    Data publikacji:
    2015-09-01
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    surprise
    astonishment
    psycholinguistics
    denotative and connotative meaning
    emotional valence
    conventional sound symbolism
    Opis:
    The aim of the study was to answer the question whether the words “zaskoczenie” [phon. zaskɔˈʧ̑ɛ̃ɲɛ]- “surprise” and “zdziwienie” [phon. ʑʥ̑iˈvjɛ̇̃ɲɛ]- “astonishment”, which are treated in the Polish language as synonyms, possess a fixed pattern of application, and whether the colloquial context of using these words differs in terms of its emotional valence. The theoretical background for this investigation was the triadic approach to language cognition that includes perception, conceptualization and symbolization, and corresponding to this approach concept of mental representation of emotions. The obtained results have shown that people tend to use the word “zaskoczenie” to describe emotions that occur in positive situations, whereas the word “zdziwienie” is more frequently applied in negative situations. The observed emotive connotation of the investigated words has been explained by the rules of phonetic symbolism and implicative meaning of the words preserved in the popular/colloquial understanding.
    Źródło:
    Polish Psychological Bulletin; 2015, 46, 3; 384-392
    0079-2993
    Pojawia się w:
    Polish Psychological Bulletin
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Features of Emotional Experiences in Individuals with Personality Disorders
    Autorzy:
    Trzebińska, Ewa
    Gabińska, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/430758.pdf
    Data publikacji:
    2014-06-01
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    personality disorders
    emotional experience
    emotional sensitivity
    emotional valence
    components of emotions
    Opis:
    Personality disorders (PDs) are marked by significant disturbances in the way of experiencing oneself, others and the world around. Yet there is paucity of research on the nature of emotional experiences in these disorders. The aim of this study was to examine whether and how emotional experience of individuals with ten distinct forms of PDs distinguished in DSM differs from those without PDs. The study was conducted via the Internet on a large nonclinical sample (N = 3509). Participants were administered a PDs measure and a performance task assessing three features of emotional experiences: emotional sensitivity, the valence of experienced emotions and the profile of five components constituting an emotion. As predicted, PDs sufferers experienced emotions differently from controls. Results demonstrated that individuals with all PDs were more receptive to emotional elicitation and displayed higher negative emotionality and a deficiency in the affective component of experienced emotions.
    Źródło:
    Polish Psychological Bulletin; 2014, 45, 2; 147-155
    0079-2993
    Pojawia się w:
    Polish Psychological Bulletin
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Copper extraction by wet chemical method
    Autorzy:
    Kugeria, P. M.
    Mwangi, I.
    Wachira, J.
    Njoroge, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/91906.pdf
    Data publikacji:
    2018
    Wydawca:
    Główny Instytut Górnictwa
    Tematy:
    hydrazones
    in situ
    reduction
    zero valence
    chicken dung
    hydrazony
    redukcja
    wartościowość zerowa
    nawóz kurzy
    Opis:
    In many countries large deposits of copper with no locally established copper based industries occur because known methods for extraction are prohibitively expensive and unaffordable. This study reports on an affordable and sustainable method for the extraction of copper. This was achieved through the use of a wet chemical method which makes use of hydrazones prepared in situ from chicken dung leached solution. The method involves the reduction of copper (II) ions leached from copper ore to zero valence using chlorine treated solution prepared from chicken droppings at a temperature range of 60-70 °C. The ore samples were pulverized to 250 micro millimetres and leached with hydrochloric acid to obtain leachate containing copper ions. The dissolved copper was reduced to copper metal and obtained by filtration. It was confirmed by XRFS analysis that, the metal purity was found to range between 60 and 80% depending on the ore used. In another experiment, chicken waste solution was used to extract copper from the ore. To the mixture, chlorine gas was then bubbledthrough a glass delivery tube to prepare the hydrazone in situ at a temperature range of 60-70 °C and a pure copper metal was obtained. The findings from this study have shown that there is great potential for the production of copper at low cost and this could be applied in both small-scale cottage industries and large industries using readily available resources such as chicken dung.
    Źródło:
    Journal of Sustainable Mining; 2018, 17, 4; 202-208
    2300-1364
    2300-3960
    Pojawia się w:
    Journal of Sustainable Mining
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Microscopic Approach for THz Intersubband Challenges
    Autorzy:
    Pereira, M. F.
    Powiązania:
    https://bibliotekanauki.pl/articles/308177.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    band structure engineering
    coupled valence bands
    intersubband laser
    intersubband transitions
    lasing without inversion
    terahertz radiation
    Opis:
    The main candidate to be a practical and low cost high power THz source is the intersubband-based quantum cascade laser, which can have a tremendous impact in many practical applications, including last mile and indoor telecommunication systems. In this review we discuss current challenges for THz intersubband device development from a microscopic point of view. Next summarize the search for new mechanisms and structure designs that can lead to intersubband gain without population inversion. This is a very important topic of current research, since is both an extremely elegant phenomenon from the basic physics of view and crucial for effective lasing in the THz range. The reason is that scattering phenomena can lead to level broadenings of the same order of magnitude of the lasing transitions, making population inversion by carrier injection in upper lasing subbands extremely difficult. Previous work in the literature is compared and contrasted with a new scheme that may lead to high temperature lasing by engineering the nonequilibrium population inversion with a combination of band structure and many body effects mediated by a k-space filter.
    Źródło:
    Journal of Telecommunications and Information Technology; 2009, 4; 118-123
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reaching the Uninterested by Referring to Valence Traits during Electoral Campaigns
    Docieranie do niezainteresowanych przez odwoływanie się do cech walencyjnych podczas kampanii wyborczych
    Autorzy:
    Rafałowski, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/2163352.pdf
    Data publikacji:
    2022-09-30
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    competence
    honesty
    valence campaigning
    political sophistication
    interest in politics
    kompetencja
    uczciwość
    kampania walencyjna
    wyrobienie polityczne
    zainteresowanie polityką
    Opis:
    Successful communication requires the sender of the message to adjust its content to the cognitive abilities of the receiver. Messages that are too complex or not interesting can be easily ignored. Failing to reach the voters with a message during a campaign is troubling for the parties competing in the election. In this study, I explore whether parties in countries in which the voters are less politically sophisticated are more inclined to emphasize their valence traits during campaigns – as these are deemed to be more cognitively accessible – at the expense of discussions of their policy propositions. The results obtained using data collected in ten European democracies show that parties in countries where the general public is less interested in politics tend to devote more attention to exhibiting their valence traits, especially honesty. The level of education of the electorate is not relevant to the relative salience of valence.
    Efektywna komunikacja wymaga od nadawcy dostosowania wiadomości do możliwości poznawczych odbiorcy. Wiadomości, które są zbyt złożone lub mało interesujące, mogą łatwo zostać zignorowane. Niemożność dotarcia z przekazem do wyborców podczas kampanii stanowi problem dla startujących w wyborach partii. W niniejszym opracowaniu badam, czy partie w krajach, w których wyborcy są mniej wyrobieni politycznie, są bardziej skłonne do eksponowania swoich cech walencyjnych podczas kampanii, które uważa się za bardziej dostępne poznawczo, kosztem ich propozycji politycznych. Wyniki uzyskane na podstawie danych zebranych w dziesięciu demokracjach europejskich pokazują, że partie w krajach, w których opinia publiczna jest mniej zainteresowana polityką, poświęcają więcej uwagi cechom walencyjnym, zwłaszcza uczciwości. Poziom wykształcenia elektoratu nie ma znaczenia dla eksponowania cech walencyjnych.
    Źródło:
    Athenaeum. Polskie Studia Politologiczne; 2022, 75; 7-36
    1505-2192
    Pojawia się w:
    Athenaeum. Polskie Studia Politologiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrodermal activity measurements for detection of emotional arousal
    Autorzy:
    Kołodziej, M.
    Tarnowski, P.
    Majkowski, A.
    Rak, R. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/200323.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electrodermal activity
    EDA
    galvanic skin response
    GSR
    skin conductance response
    SCR
    feature selection
    arousal
    valence
    classification
    regression
    Opis:
    In this article, we present a comprehensive measurement system to determine the level of user emotional arousal by the analysis of electrodermal activity (EDA). A number of EDA measurements were collected, while emotions were elicited using specially selected movie sequences. Data collected from 16 participants of the experiment, in conjunction with those from personal questionnaires, were used to determine a large number of 20 features of the EDA, to assess the emotional state of a user. Feature selection was performed using signal processing and analysis methods, while considering user declarations. The suitability of the designed system for detecting the level of emotional arousal was fully confirmed, throughout the number of experiments. The average classification accuracy for two classes of the least and the most stimulating movies varies within the range of 61‒72%.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 4; 813-826
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electronic structures of CdSe quantum dots embedded in ZnSe
    Autorzy:
    Jayawardhana, M. R. P. I.
    Wijewardena Gamalath, K. A. I. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1178287.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    LCAO method
    Quantum dot
    Sparse matrices
    adjacency matrix
    folded spectrum method
    optical matrix elements
    strain effects
    valence band offset
    Opis:
    The electronic structures and optical matrix elements of CdSe semiconductor quantum dots of near cubical, hemispherical and cylindrical shape embedded in ZnSe were calculated. Bulk Hamiltonian matrices were obtained using the empirical tight binding method including spin-orbital coupling and relativistic effects. All quantum dots were simulated in reciprocal space and the number of atoms in each quantum dot was kept nearly equal for the comparison purpose. An adjacency matrix was produced which indicates the adjacencies of unit cells and the bulk Hamiltonian was included for each adjacency point in order to obtain the quantum dot Hamiltonians. The strain effects, valence band offset and spin orbital coupling were included in the calculations. The quantum dot Hamiltonian was solved to obtain the highest and lowest eigenvalues from which the electronic structure was obtained. Then eigenvalues near integers ranging from the lowest eigenvalue to highest eigenvalue was generated for the point.
    Źródło:
    World Scientific News; 2017, 86, 3; 205-225
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Xe and Kr bonding abilities in the single crystal oxygen vacancies of the uranium based fuel
    Autorzy:
    Dąbrowski, L.
    Szuta, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/147880.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    noble gases
    chemical bond
    UO2 single crystal
    valence electron density distribution
    atomic force constants
    bond energy
    crystal lattice
    Opis:
    The valence electron density distribution of krypton and xenon located in the oxygen vacancy and in its nearest neighbourhood was performed by application of the method “ab initio”. The results are presented on the graphs. The bonding energies of krypton and xenon in the uranium dioxide crystal lattice were calculated. It was found also that krypton and xenon cause a local increase of UO1.75Xe0.25 and UO1.75Kr0.25 unit cell and cause its deformation what is presented in tables. The force constants of krypton and xenon were also assigned what gives evidence about the strong bond of krypton and xenon with the UO1.75Xe0.25 and UO1.75Kr0.25 single crystal lattice. Obtained results are compared with the analogical studies of He atom incorporation into UO2 single crystal lattice.
    Źródło:
    Nukleonika; 2012, 57, 1; 95-100
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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