Informacja

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

Wyszukujesz frazę "space/communication network" wg kryterium: Wszystkie pola


Wyświetlanie 1-2 z 2
Tytuł:
Integrated character of information technology and educational space
Autorzy:
Osmańska-Furmanek, Wielisława
Powiązania:
https://bibliotekanauki.pl/articles/47426334.pdf
Data publikacji:
2003-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
educational space
information technologies
network communication
multimedia
network communities
lifelong education
distance education
Opis:
Influence that information and communication technologies exert forces changes on educational system and at the same time education is searching for new, modern and innovative solutions. Integration processes that go along with this are additional force that makes responding to new challenges inevitable. It is impossible for each citizen to create his/her own, well-formed knowledge and to take responsibility for this activity without a fundamental change in education system, e.g. without resigning from teaching in aid of developing learning processes and shaping the ability to absorb future technologies. The article presents pedagogical and social aspects of changes which take place in the area of information technologies and influence they exert on extending the man's educational space both internal and external one. It touches on issues related to penetration of mediated space and cyberspace into it and formation of new forms and methods of communication.
Źródło:
The New Educational Review; 2003, 1; 189-196
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The improvement of fiber-detection method to enhance the output of amplify-received relaying on FSO communications
Autorzy:
Darusalam, Ucuk
Priambodo, Purnomo Sidi
Zulkifli, Fitri Yuli
Rahardjo, Eko Tjipto
Powiązania:
https://bibliotekanauki.pl/articles/27311966.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
amplify-received relaying
optical relaying network
free-space optical communication
noise suppression
optical spatial filter
scintillation
Opis:
The performance of free-space optical (FSO) communications that using an optical amplifier (OA) in the scheme of an amplify-received (AR)-relaying has a major drawback in the detection of input signal quality under the effects of turbulence. As an OA is based on a fiber-detection (FD) method to receive and delivers a signal at the amplification process stage, there is an opportunity to implement an optical spatial filter (OSF) to improve the quality of an input signal. In this paper, as the continuation of previous work on the direct-detection, the OSF is applied on the AR-relaying. The novelty proposed in this work is the improvement of FD method where the OSF is designed as the integration of cone reflector, pinhole and multi-mode fiber with an OA. The OSF produces an optical signal, the input of the OA, which minimizes the effects of turbulence, background noise and signal fluctuation. Thus, OA in AR-relaying produces signal output with high power and rise up below threshold level. Additionally, an OSF with a lower pinhole diameter produces the best quality of the signal spectral to be delivered into an EDFA. Through this implementation, the performance of optical relaying on FSO can be significantly improved.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 2; 325--333
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

    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