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Wyszukujesz frazę "Fudała, M." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
PFS scheme for forcing better service in best effort IP network
Autorzy:
Fudała, M.
Burakowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/308195.pdf
Data publikacji:
2004
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
IP-based network
better than best effort service
priority forcing scheme
Opis:
The paper presents recent results corresponding to a new strategy for source traffic generating, named priority forcing scheme (PFS), allowing Internet users for getting better than best effort service in IP network. The concept of PFS assumes that an application, called PFS application, sends to the network a volume of additional traffic for the purpose of making the reservations for the data traffic in the overloaded router queues along the packet path in the IP network. The emitted redundant packets, named R-packets, should be rather of small size comparing to the data packets, named D-packets. The PFS scheme assumes that the R-packets waiting in a queue can be replaced by the arriving D-packets and belonging to the same flow. In this way, the D-packets can experience a prioritised service comparing to the packets produced by a non-PFS application. Notice that the proposed solution does not require any quality of service (QoS) mechanisms implemented in the network, like scheduler, dropping, marking etc., except R- and D-packets identification and replacing. We discuss the PFS efficiency for forcing priority in the overloaded conditions. Moreover simple system analysis is also presented. Finally, the profits of using PFS scheme are illustrated by examples corresponding to FTP (TCP controlled traffic) and VoIP (UDP streaming traffic) applications.
Źródło:
Journal of Telecommunications and Information Technology; 2004, 2; 23-28
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
AQUILA network architecture: first trial experiments
Autorzy:
Bąk, A.
Bęben, A.
Burakowski, W.
Dąbrowski, M.
Fudała, M.
Tarasiuk, H.
Kopertowski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/309191.pdf
Data publikacji:
2002
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
IP QoS
pomiary
measurements
Opis:
The paper presents trial experiments with IP QoS network services (NS) defined and implemented in the AQUILA pilot installation. The AQUILA NSs (premium CBR, premium VBR, premium multimedia and premium mission critical) provide a framework for supporting a variety of applications generating both streaming and elastic traffic. The measurement experiments confirm that AQUILA architecture differentiates the QoS offered to these NSs. The presented numerical results were obtained in the test network installed in the Polish Telecom (Warsaw) consisting of 8 CISCO routers.
Źródło:
Journal of Telecommunications and Information Technology; 2002, 2; 3-13
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal disintegration as a process supporting sewage sludge utilization
Autorzy:
Remiszewska-Skwarek, A.
Szopińska, M.
Łuczkiewicz, A.
Kasinath, A.
Fudala-Książek, S.
Powiązania:
https://bibliotekanauki.pl/articles/1191815.pdf
Data publikacji:
2019
Wydawca:
Gdańska Szkoła Wyższa
Tematy:
sewage sludge
thermal disintegration
methane fermentation
biogas production
Opis:
Highly effective methods of biological and chemical wastewater treatment applied in Poland resulted in an increased amount of generated sewage sludge, which pose serious problem related to its utilization. The purpose of this studies was to determine the impact of the thermal disintegration process (in low temperatures < 100°C) on the biodegradation of excess sludge, and then on the methane fermentation process. It was found that the method of thermal disintegration under the aforementioned conditions allows to achieve a very high degree of the excess sludge disintegration (> 70%) already at a temperature of 45°C. At the same time, the concentration of volatile fatty acids (VFAs) increases more than 55 times, which can significantly shorten the fermentation process.
Źródło:
Eco-Energetics: technologies, environment, law and economy; 2019, 2; 93--96
2657-5922
2657-7674
Pojawia się w:
Eco-Energetics: technologies, environment, law and economy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Clinicopathological significance of Epo, EpoR, Ki-67 and Bax expression in colorectal cancer
Autorzy:
Lopmerta, K.
Grudzinska, M.
Jakubowska, K.
Samocik, P.
Kozlowski, L.
Fudala, A.
Wincewicz, A
Koda, M.
Powiązania:
https://bibliotekanauki.pl/articles/1918787.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Colon cancer
erythropoietin
erythropoietin receptor
Opis:
Introduction: Expression of Epo, a glycoprotein secreted by the fetal liver and the adult kidney in response to cellular hypoxia and its receptor have been described in human solid tumors, such as colon and breast cancer. Purpose: Since activation of Epo-EpoR signaling pathway in erythroid progenitor and precursor cells leads to promotion of proliferation and differentiation or prevention of programmed cell death through Bcl-xl and Bcl-2 it was of interest to investigate expression of Epo, EpoR, apoptosis regulator – Bax and marker of proliferating cells - Ki-67 and assess correlation between them, with regard to clinicopathological variables of colorectal cancer. Materials and methods: The correlations between expression of Epo, EpoR, Bax and Ki-67 in colorectal cancer were analyzed in regard to patient age, sex, primary localization, histopathological type, grading, staging and lymph node invasion. Statistical analyses were performed by using the Spearman rank correlation test applying a significance level of p<0,05. Results: Correlation between Bax and EpoR is positive and statistically significant at all groups of patients except group pT1+pT2. Positive correlation between Bax and Epo is statistically significant at following groups of patients: all patients, age 60, age >60, male, female , primary localization in rectum, primary localization in colon, adenocarcinoma, G2, G3. Statistical analysis revealed no significant correlations between expression of neither Ki-67 with Epo nor Ki-67 with EpoR in all groups of patients. Conclusions: Epo seems to be a pleiotropic cytokine, which can exert its biological effect on several cell types, including neoplastic cells. The effect of Epo-EpoR signaling can differ in various cells and conditions.
Źródło:
Progress in Health Sciences; 2018, 8(2); 112-117
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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