Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "hidden communication" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Animal mimicry for covert communication with arbitrary output distribution: beyond the assumption of ignorance
Autorzy:
Zuber, Krzysztof Władysław
Opieliński, Krzysztof J.
Powiązania:
https://bibliotekanauki.pl/articles/128063.pdf
Data publikacji:
2019
Wydawca:
Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:
animal mimicry
covert communication
hidden Markov model
mimikra zwierzęca
komunikacja ukryta
ukryty model Markowa
Opis:
The paper describes a new method of embedding human communication in acoustic sequences mimicking animal communication. This is done to ensure a low probability of detection (LPD) transfer of covert messages. The proposed scheme mimics not only individual sounds, but also the imitated species’ communication structure. This paper presents a step forward in animal communication mimicry - from pure vocal imitation without regard for the plausibility of communication’s structure, through Zipf’s law-preserving scheme, to the mimicry of a known communication structure. Unlike previous methods, the updated scheme does not rely on third parties’ ignorance of the imitated species’ communication structure beyond Zipf’s law - instead, the new method enables one to encode information in a known zeroth-order Markov model. The paper describes a method of encoding an arbitrary message in a syntactically plausible, species-specific sequence of animal sounds through evolutionary means. A comparison with the previous iteration of the method is also presented.
Źródło:
Vibrations in Physical Systems; 2019, 30, 1; 1-8
0860-6897
Pojawia się w:
Vibrations in Physical Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czynniki społeczne w genezie nieprawidłowego rozwoju i zachowania
Social factors in the genesis of an impaired development and behaviour
Autorzy:
Siwek, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/2139682.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
social environment: family – school – contemporaries
characteristics and typology of family systems
developmental and behavioral disorders – pathological mechanism of disorders – localization: personality traits and parental attitudes
interpersonal relations–collusion relationships
communication systems
hidden loyalty
delegation to roles
Opis:
The paper deals with the impact of the social background for developmental disorders, searching for unfavorable factors in the three most important surroundings – family, school, contemporary group. Hence the analysis was made with signs of improper interpersonal relations and life conditions encroaching on mental balance that can be found in social agencies (school, family), responsible for personal development and behavior. Basing upon selected theoretical works and my diagnostic and therapeutic experience, various negative effects on personal development were illustrated, given the ill-adapted familial and educational systems, as well as informal roles played in contemporary groups. The paper got its material focused on the familial environment where personality traits and parental attitudes, ways of communication and pathological mechanisms permanently generate factors that appear unfavorable for personal social development (toxic messages, enforced loyalty, role delegation,collusion relationships). A particular emphasis was put on the role of social factors in the origins of both primary and secondary disorders, and on the fact that signs of difficulties and disorders a youngster meets may be an indirect reaction to factors infringing on his/her psychological balance or else – actualized belatedly when assuming new social roles.
Źródło:
Acta Universitatis Lodziensis. Folia Psychologica; 2010, 14; 19-43
2353-4842
Pojawia się w:
Acta Universitatis Lodziensis. Folia Psychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Steganographic algorithm of hiding information in sound based on Fourier transform and masking
Autorzy:
Kozieł, G.
Powiązania:
https://bibliotekanauki.pl/articles/206286.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
keywords steganography
hidden communication
Fourier transform
Opis:
A new steganographicmethod based on Fourier transform is proposed. Data is attached in the frequency domain within the limits of the audible band. Masked frequencies are used to conceal information in order to make the changes inaudible for human ear. This approach allows for modification in the sound frequency band only, and does not require any additional modifications. It also allows for concealing information efficiently, minimizing the number of changes and gaining robustness with respect to popular sound transformations.
Źródło:
Control and Cybernetics; 2011, 40, 4; 1231-1247
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Peculiarities of use of speech acoustic environment while embedding into it of hidden message codes
Autorzy:
Korostil, Y.
Afanasyeva, O.
Powiązania:
https://bibliotekanauki.pl/articles/360624.pdf
Data publikacji:
2013
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
communication channel
model
message
hidden message
acoustic message
Opis:
The problems of embedding of message codes into Acoustic environment of speech are researched. The peculiarities of speech perception by human hearing are analyzed. As an example of acoustic Messager environment and codes of hidden messages embedded into it is reviewed a channel of mobile Communications in the part of transformations which are implemented with acoustic signals. Approach to build a model of process of transmission of speech via non-linear channel basing on imagination about speech signals spectrum is developed. The proposals on methods of use of such models for analysis and interpretation of distortions of signals made by transformations, implemented in example channel are presented.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 33 (105); 46-50
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies