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    Wyświetlanie 1-22 z 22
    Tytuł:
    Epstein-Barr Virus - pathogenesis, latency and cancers
    Autorzy:
    Kliszczewska, Ewa
    Jarzyński, Adrian
    Boguszewska, Anastazja
    Pasternak, Justyna
    Polz-Dacewicz, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/972458.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    latency
    infection
    cancer
    EBV
    Opis:
    The Epstein-Barr virus (EBV) was discovered in 1964 by Michael Anthony Epstein and Yvonne Barr, who discovered a herpesvirus-like infectious agent in a biopsy specimen from a patient with Burkitt’s lymphoma. This virus belongs to the Herpesviridae family (subfamily Gammaherpesvirinae, genus Lymphocryptovirus). EBV is a ubiquitous herpesvirus that is causally associated with various malignant tumours. According to the current nomenclature, it was named human herpesvirus type 4 (human herpesvirus 4 – HHV-4). Primary infection usually occurs in childhood. In developing countries, the infection rate among young children is higher than in developed countries. It was the first human tumour virus and it is currently categorized as a group-1 carcinogen due to its association with various cancers. It is estimated that over 90% of the adult population has been infected with this pathogen, but only a minority will develop the disease. EBV establishes latent infection characterized by the expression of a limited number of viral genes called latent genes. Moreover, during its life cycle, EBV periodically reactivates and can be transmitted to other susceptible hosts. The oral cavity is the main site of EBV occurrence and the most common source of infection. This study discusses EBV frequency and its association with the occurrence of malignant tumours and the pathways of tumour progression.
    Źródło:
    Journal of Pre-Clinical and Clinical Research; 2017, 11, 2; 142-146
    1898-2395
    Pojawia się w:
    Journal of Pre-Clinical and Clinical Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Web server latency reduction study
    Badania redukcji opóźnień serwera WWW
    Autorzy:
    Mbarek, F.
    Mosorov, V.
    Wojciechowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/408273.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
    Tematy:
    web server
    latency
    thread
    opóźnienie
    wątek
    Opis:
    This paper investigates the characteristics of web server response delay in order to understand and analyze the optimisation techniques of reducing latency. The analysis of the latency behavior for multi-process Apache HTTP server with different thread count and various workloads, was made. It was indicated, that the insufficient number of threads used by the server handling the concurrent requests of clients, is responsible for increasing latency under various loads. The problem can be solved by using a modified web server configuration allowing to reduce the response time.
    W artykule opisano badania charakterystyk czasowych serwera WWW w celu zrozumienia i analizy technik optymalizacyjnych powodujących redukcję opóźnienia. Dokonano analizy czasów opóźnień dla wieloprocesowego serwera Apache dla różnej liczby wątków i obciążeń. Wskazano, że niewystarczająca liczba wątków wykorzystywanych przez serwer, obsługujących jednoczesne żądania klientów, wpływa znacząco na zwiększenie opóźnień dla różnych obciążeń. Problem może być rozwiązany za pomocą modyfikacji ustawień serwera WWW, pozwalających na skrócenie czasu reakcji.
    Źródło:
    Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2017, 7, 3; 51-55
    2083-0157
    2391-6761
    Pojawia się w:
    Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Web server latency reduction study
    Badania redukcji opóźnień serwera WWW
    Autorzy:
    Mbarek, F.
    Mosorov, V.
    Wojciechowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/407708.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
    Tematy:
    web server
    latency
    thread
    serwer www
    opóźnienie
    wątek
    Opis:
    This paper investigates the characteristics of web server response delay in order to understand and analyze the optimization techniques of reducing latency. The analysis of the latency behavior for multi-process Apache HTTP server with different thread count and various workloads, was made. It was indicated, that the insufficient number of threads used by the server handling the concurrent requests of clients, is responsible for increasing latency under various loads. The problem can be solved by using a modified web server configuration allowing to reduce the response time.
    W artykule opisano badania charakterystyk czasowych serwera WWW w celu zrozumienia i analizy technik optymalizacyjnych powodujących redukcję opóźnienia. Dokonano analizy czasów opóźnień dla wieloprocesowego serwera Apache dla różnej liczby wątków i obciążeń. Wskazano, że niewystarczająca liczba wątków wykorzystywanych przez serwer, obsługujących jednoczesne żądania klientów, wpływa znacząco na zwiększenie opóźnień dla różnych obciążeń. Problem może być rozwiązany za pomocą modyfikacji ustawień serwera WWW, pozwalających na skrócenie czasu reakcji.
    Źródło:
    Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2017, 7, 2; 19-23
    2083-0157
    2391-6761
    Pojawia się w:
    Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Saccadometry – new possibility for monitoring brain functional status
    Autorzy:
    Ober, Jan
    Dylak, Jacek
    Gryncewicz, Wojciech
    Przedpelska-Ober, Elżbieta
    Powiązania:
    https://bibliotekanauki.pl/articles/703646.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    saccade latency
    brain concussion
    mountain sickness
    Huntington
    Alzheimer
    Parkinson
    Opis:
    Authors present an overview of hierarchical control of saccades, explaining why the saccadic refixation response is a cortically mediated activity. The time structure of saccadix refixation is discussed focusing on the long latency of response, which cannot be justified by physiological transmission delays. Cortical saccades procrastination is described based on the Professor Carpenter LATER Model. It is followed by the discussion of bioengineering aspects of saccadometry covering the selection of appropriate measurement technology and the expert system based eye movement signal analysis, aimed on extracting physiologically valid information about the brain functional status. Several examples are presented of the potential applicatio ns of saccadometry, including monitoring of severity and recovery from brain concussion, head exposure to high accelerations happening in contact sports, monitoring adaptation to high altitude and controlling mountain sickness, monitoring the neurodegenerative processes taking place in Huntington and Alzheimer diseases, as well as the possibility to optimize the placement of electrodes for deep brain stimulation. The concluding remark is: that the high sensitivity but low specificity of saccadic disturbances, usually considered as being disadvantageous for differential neurological diagnosis, should be seen as saccades main advantage, allowing to detect broad spectrum of brain dysfunctions at their earliest stage of development.
    Źródło:
    Nauka; 2009, 4
    1231-8515
    Pojawia się w:
    Nauka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimizing Delay Using Dynamic Blocking Expanding Ring Search Technique for Ad Hoc Networks
    Autorzy:
    Mhatre, Kavita
    Khot, Uday
    Powiązania:
    https://bibliotekanauki.pl/articles/1844446.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    AODV
    BERS
    ERS
    BERS+
    DBERS
    MANET
    latency
    energy efficiency
    routes discovery
    Opis:
    Energy and latency are the significant Quality of Service parameters of ad hoc networks. Lower latency and limited energy expenditure of nodes in the ad hoc network contributes to a prolonged lifetime of the network. Reactive protocols determine the route to the destination using a route discovery process which results in increased delay and increased energy expenditure. This paper proposes a new technique of route discovery, Dynamic Blocking Expanded Ring Search (DBERS) which minimizes time delay and energy required for route discovery process. DBERS reduces energy expenditure and time delay occurring in the existing route discovery techniques of reactive protocols. The performance of DBERS is simulated with various network topologies by considering a different number of hop lengths. The analytical results of DBERS are validated through conduction of extensive experiments by simulations that consider topologies with varying hop lengths. The analytical and simulated results of DBERS are evaluated and compared with widely used route discovery techniques such as BERS, BERS+. The comparison of results demonstrates that DBERS provides substantial improvement in time efficiency and also minimizes energy consumption.
    Źródło:
    International Journal of Electronics and Telecommunications; 2020, 66, 4; 723-728
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effects of radio-frequency radiation (RFR) exposure on the analgesic efficacy of morphine in healthy rats and rats with inflammation
    Autorzy:
    Bodera, Paweł
    Antkowiak, Bożena
    Paluch, Małgorzata
    Sirav, Bahriye
    Siwicki, Andrzej K.
    Stankiewicz, Wanda
    Powiązania:
    https://bibliotekanauki.pl/articles/2161960.pdf
    Data publikacji:
    2019-07-15
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    inflammation
    rats
    morphine
    pain perception
    radio-frequency radiation
    paw withdrawal latency
    Opis:
    Objectives The aim of this study, conducted at the Military Institute of Hygiene and Epidemiology in Warsaw in 2017, was to evaluate the effects of a single (15 min) and repeated (5 times for 15 min) radio-frequency radiation (RFR) exposure of 1800 MHz frequency on the analgesic efficacy of morphine in healthy rats and rats with complete Freund’s adjuvant (CFA) induced inflammation. Material and Methods Rats were injected intraperitoneally with morphine (MF) in the dose of 8 mg/kg or drug vehicle 15 min before RFR exposure. The authors used the plantar analgesia meter and the radiant heat paw-withdrawal test to assess the pain threshold. Results A single RFR exposure slightly influenced paw withdrawal latency (PWL) in healthy rats in the single exposure baseline group, and influenced PWL, 30 and 60 min after morphine or vehicle injection, in the repeated exposure group. There were differences between the sham-exposed groups (vehicle), 30, 60 and 90 min after injection, both in the single and repeated RFR-exposure groups. The antinociceptive effect of morphine in healthy rats was slightly decreased by RFR exposure at 60 and 90 min, both in the single and repeated exposure groups. The PWL was slightly decreased, both in the single and repeated exposure groups with inflammation (CFA and CFA/MF), at 30, 60 and 90 min, and PWL was increased in the sham-exposed groups (CFA and CFA/MF), both in the single and repeated exposure groups, at 30, 60 and 90 min. The antinociceptive effect of morphine in healthy rats was significantly increased by RFR exposure at 30 min after drug injection in the single exposure group, and increased at 30 and 60 min in the repeated exposure group. Conclusions The authors observed a minor influence of RFR exposure on the antinociceptive effects of morphine in healthy rats after repeated exposures and a statistically significant influence of repeated exposure on morphine mediated antinociceptive effects in the inflammation group. Int J Occup Med Environ Health. 2019;32(4):465–74
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2019, 32, 4; 465-474
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Smart mobile P2P communication optimization for close range by an automatic interface switch
    Autorzy:
    Gajewski, B.
    Martyn, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/114541.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    Peer-to-Peer Wi-Fi
    minimize latency
    mobile communication
    off-range connectivity
    Opis:
    The efficiency of peer-to-peer data connection for mobile applications is still an issue, and an essential problem for their users. The newest 4G LTE networks, though offering high throughput, still do not allow a direct peer-to-peer communication. Moreover, the users of cellular networks are still charged for each megabyte of data transfer. Much better connection parameters and smaller latencies are ordered by Wi-Fi networks. However, setting up hotspot Wi-Fi networks still requires some effort, as it must be done manually in most cases. In this paper, we propose a solution based on a technique of automatic switching between a Wi-Fi hotspot and a cellular network. Our method allows one to minimize latency and maximize throughput. It also lowers the time and effort needed to establish a Wi-Fi connection.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 7; 317-319
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Task jitter measurement under RTLinux operating system
    Autorzy:
    Moryc, P.
    Černohorský, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/384605.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    real-time
    jitter
    latency
    measurement
    RT-Linux
    benchmark
    workload effects
    saturation method
    Opis:
    This paper deals with real-time task jitter measurement under RTLinux operating system. In the first part, it describes methods and tools developed to measure jitter in the RTLinux environment. In the second part, it is focused on discussion of results, obtained on PC hardware, and their interpretation.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 1; 62-65
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection of specific lytic and latent transcripts can help to predict the status of Epstein-Barr virus infection in transplant recipients with high virus load
    Autorzy:
    Zawilinska, Barbara
    Kosinska, Anna
    Lenart, Marzena
    Kopec, Jolanta
    Piatkowska-Jakubas, Beata
    Skotnicki, Aleksander
    Kosz-Vnenchak, Magdalena
    Powiązania:
    https://bibliotekanauki.pl/articles/1040672.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    bone marrow transplantation
    Epstein-Barr virus
    latency
    EBV-lymphoproliferative disorder
    productive infection
    Opis:
    Epstein-Barr virus (EBV), a member of the family Herpesviridae, is widely spread in the human population and has the ability to establish lifelong latent infection. In immunocompetent individuals the virus reactivation is usually harmless and unnoticeable. In immunocompromised patients productive infection or type III latency may lead to EBV-associated post-transplant lymphoproliferative disorder (PTLD). The aim of our research was to investigate the utility of PCR-based methods in the diagnosis and monitoring of EBV infections in bone marrow transplant recipients. Thirty-eight peripheral blood leukocyte samples obtained from 16 patients were analysed, in which EBV DNA was confirmed by PCR. We used semi-quantitative PCR to estimate the viral load and reverse-transcription PCR (RT-PCR) to differentiate between latent and productive EBV infection. In 14 patients we confirmed productive viral infection. We observed a correlation between higher number of EBV genome copies and the presence of transcripts specific for type III latency as well as clinical symptoms.
    Źródło:
    Acta Biochimica Polonica; 2008, 55, 4; 693-699
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fixed-latency System for High-speed Serial Transmission Between FPGA Devices with Forward Error Correction
    Autorzy:
    Kruszewski, Michał
    Zabołotny, Wojciech Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/226360.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    data transmission
    fixed-latency transmission
    forward error correction
    orthogonal concatenated coding
    FPGA
    Opis:
    This paper presents the design of a compact protocol for fixed-latency, high-speed, reliable, serial transmission between simple field-programmable gate arrays (FPGA) devices. Implementation of the project aims to delineate word boundaries, provide randomness to the electromagnetic interference (EMI) generated by the electrical transitions, allow for clock recovery and maintain direct current (DC) balance. An orthogonal concatenated coding scheme is used for correcting transmission errors using modified Bose–Chaudhuri–Hocquenghem (BCH) code capable of correcting all single bit errors and most of the double-adjacent errors. As a result all burst errors of a length up to 31 bits, and some of the longer group errors, are corrected within 256 bits long packet. The efficiency of the proposed solution equals 46.48%, as 119 out of 256 bits are fully available to the user. The design has been implemented and tested on Xilinx Kintex UltraScale+ KCU116 Evaluation Kit with a data rate of 28.2 Gbps. Sample latency analysis has also been performed so that user could easily carry out calculations for different transmission speed. The main advancement of the work is the use of modified BCH(15, 11) code that leads to high error correction capabilities for burst errors and user friendly packet length.
    Źródło:
    International Journal of Electronics and Telecommunications; 2020, 66, 3; 545-553
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pleural mesothelioma in household members of asbestos-exposed workers in Friuli Venezia Giulia, Italy
    Autorzy:
    D'Agostin, Flavia
    de Michieli, Paola
    Negro, Corrado
    Powiązania:
    https://bibliotekanauki.pl/articles/2161879.pdf
    Data publikacji:
    2017-05-08
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    latency time
    asbestos workers
    family members
    household exposure
    pleural mesothelioma
    mesothelioma register
    Opis:
    Objectives Malignant mesothelioma is closely associated to asbestos exposure. One such exposure may occur through contact with occupationally exposed household members and their belongings. This study examines the features of pleural mesothelioma attributable only to asbestos brought home by another family member. Material and Methods The data sources were 1063 mesothelioma cases diagnosed between 1995 and 2014, from the Friuli Venezia Giulia Mesothelioma Register. In all cases the diagnosis of mesothelioma was based on the pathology report. Exposure information and demographic data were acquired by an occupational medical standardized questionnaire/interview. Results Household-exposure mesothelioma cases included 33 women and 2 men. Relationships were: wives (N = 22), daughters (N = 9), sons (N = 2), and mothers (N = 2). Asbestos exposure in the workers predominantly occurred in shipyards. Out of the 35 pleural cases, 19 were epithelial, 9 biphasic, 3 sarcomatoid, and 4 not specified. The mean age at diagnosis was 77 years old. The mean latency was 59 years, with wives having a significant shorter latency than offspring. Latency was not significantly related to morphology and asbestosis. The overall mean survival was 16 months (median 11 months) but treatment was beneficial (mean 16 months vs. 7 months). Biphasic/sarcomatoid histology and presence of asbestosis were associated with a decreased survival, although not with statistical significance. Conclusions Our data confirms that household exposure increases the risk for pleural mesothelioma amongst women with no history of occupational asbestos exposure. This is an ongoing problem in many countries, as well as in Italy, where the evaluation of a framework for the compensation of these cases is under debate. Int J Occup Med Environ Health 2017;30(3):419–431
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2017, 30, 3; 419-431
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mutism – one of the research areas of applied linguistics
    Niemówienie – jeden z obszarów badań lingwistyki stosowanej
    Autorzy:
    Solak, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/459193.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
    Tematy:
    mutism
    lack of speech
    pause
    latency
    niemówienie
    milczenie
    przemilczenie
    pauza
    latencja wypowiedzi
    Opis:
    Niniejszy artykułu definiuje jeden z obszarów badań lingwistyki stosowanej, jakim jest „niemówienie”. W jego obrębie umieszczono następujące zjawiska: milczenie, przemilczenie i pauzę. Artykuł zawiera ich charakterystykę, a także autorską definicję „niemówienia”, które rozpatrywane jest z jednaj strony jako niezbędny warunek zaistnienia wypowiedzi i jej właściwego odbioru, z drugiej przejaw zaburzeń komunikacji językowej lub innych nieprawidłowości występujących podczas tworzenia wypowiedzi słownej.
    Źródło:
    Annales Universitatis Paedagogicae Cracoviensis. Studia Linguistica; 2018, 13; 139-148
    2083-1765
    Pojawia się w:
    Annales Universitatis Paedagogicae Cracoviensis. Studia Linguistica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimization of Energy and Service Latency Computation Offloading using Neural Network in 5G NOMA System
    Autorzy:
    Suprith, P. G.
    Ahmed, Mohammed Riyaz
    Powiązania:
    https://bibliotekanauki.pl/articles/27311932.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    Mobile edge computing
    Deep Q Network Algorithm
    latency optimized
    computation offloading
    5G
    Opis:
    The future Internet of Things (IoT) era is anticipated to support computation-intensive and time-critical applications using edge computing for mobile (MEC), which is regarded as promising technique. However, the transmitting uplink performance will be highly impacted by the hostile wireless channel, the low bandwidth, and the low transmission power of IoT devices. Using edge computing for mobile (MEC) to offload tasks becomes a crucial technology to reduce service latency for computation-intensive applications and reduce the computational workloads of mobile devices. Under the restrictions of computation latency and cloud computing capacity, our goal is to reduce the overall energy consumption of all users, including transmission energy and local computation energy. In this article, the Deep Q Network Algorithm (DQNA) to deal with the data rates with respect to the user base in different time slots of 5G NOMA network. The DQNA is optimized by considering more number of cell structures like 2, 4, 6 and 8. Therefore, the DQNA provides the optimal distribution of power among all 3 users in the 5G network, which gives the increased data rates. The existing various power distribution algorithms like frequent pattern (FP), weighted least squares mean error weighted least squares mean error (WLSME), and Random Power and Maximal Power allocation are used to justify the proposed DQNA technique. The proposed technique which gives 81.6% more the data rates when increased the cell structure to 8. Thus 25% more in comparison to other algorithms like FP, WLSME Random Power and Maximal Power allocation.
    Źródło:
    International Journal of Electronics and Telecommunications; 2023, 69, 4; 661--667
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evidence for a Causal Relationship Between Mach’s Principle and the Quantitative Latency for Universal Entanglement
    Autorzy:
    Persinger, M. A.
    Koren, S. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/412579.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Mach’s principle
    entanglement latency
    1023 m•s-1
    inertial frame dragging
    gravitationalelectromagnetic differentiation
    Opis:
    Support for Mach’s principle of the Prominence or the Immanence of the Universe which states that the behavior of any part of the Cosmos is determined by all of its parts requires quantitative convergence from the appropriate combination of universal parameters. Applications of recent calculations based upon a diffusivity with a real value (~1023 m•s-1) revealed solutions that are consistent with the concept of dragging inertial frames and geodetic (Lense-Thirring) precession. The latency for non-local entanglement around the earth is similar to frame dragging as measured by Ciufolini. The independent solution for this real value to capture Mach’s “whole universe” requires the contribution from quantum-level Zero Point Fluctuations. Consideration of this value for solar-terrestrial distances could explain the non-local “gravitational” effects upon biological reactions that appear to precede electromagnetic effects. The verification of the “entanglement latency” by independent methods could produce the validation for Mach’s principle.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 15; 80-86
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Discrepancies Between Predicted and Observed Intergalactic Magnetic Field Strengths from the Universe’s Total Energy: Is It Contained Within Submatter Spatial Geometry?
    Autorzy:
    Persinger, M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/412513.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    gravitational energy
    magnetic energy
    electric energy
    energy equivalence
    spatial geometry
    entanglement latency
    Mach’s Principle
    Opis:
    Although the gravitational energy within the distance of the radius of a singularity for a current estimated mass of the universe is equal to ~1069 Joules, congruent solutions for different ages of the universe reflect changes by a factor of π or 8π for identities. The total energy value is equal to the product of primary constants G·μ·ε·ħ·σ·c2 (which results in power, W) when divided by the area of smallest unit of space (area of a circle with a radius of Planck’s Length) and then multiplied by the universe’s current surface area and age. The conspicuous discrepancies of ~2∙103 between the predicted average magnetic intensity within the universe from that total energy and contemporary measurements can be accommodated by the quantitative product of 21.3π4 derived from the classic four-dimensional metric. The equivalent electric field potential divided by the predicted magnetic intensity results in a velocity that has been suggested to reflect the latency for excess correlations to occur across the universe. The most parsimonious explanation for these results is that a large component of the magnetic manifestation of energy in the universe is recondite or occluded within its submatter spatial structure and that the required cohesion or “diffusivity” throughout the volume involves the electric field component. These quantifications may facilitate understanding of Mach’s principle that any part of the universe is influenced by all of its parts.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 11, 1; 18-23
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pomiary wartości opóźnień w torze audio urządzeń z systemem Android
    Measurement of latency in the Android audio path
    Autorzy:
    Blaszke, M.
    Weber, D.
    Zaporowski, S,
    Powiązania:
    https://bibliotekanauki.pl/articles/267507.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
    Tematy:
    urządzenia mobilne
    system Android
    tor foniczny
    aplikacja multimedialna
    przetwarzanie dźwięku
    Android
    latency
    measurement
    audio engineering
    Opis:
    Poniższy artykuł opisuje metody pomiarów wartości opóźnienia w torze fonicznym urządzeń pracujących na różnych wersjach systemu Android. W pierwszej części artykułu podano krótką charakterystykę środowiska Android w kontekście opóźnień w torze fonicznym. Następnie przedstawiono sposób pomiaru opóźnienia w torze fonicznym za pomocą aplikacji SuperPowered Latency oraz Dr. Rick O’Rang Loopback. W końcowej części pracy podano wyniki przeprowadzonych pomiarów i ich porównane z wynikami dostępnymi na stronach producenta systemu Android. Zawarto również wnioski dotyczące możliwości implementacji aplikacji wykorzystujących tor foniczny i problemy powodowane przez opóźnienia sygnału.
    This paper provides a description of experimental investigations concerning comparison between the audio path characteristics of various Android versions. First, information about the changes in each system version in the context of latency caused by them is presented. Then, a measurement procedure employing available applications to measure latency is described comparing to results contained in the Internet. Finally, a comparison between tested systems and results of tests are presented along with conclusions on possible audio processing implementations on the Android platform.
    Źródło:
    Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2018, 60; 11-14
    1425-5766
    2353-1290
    Pojawia się w:
    Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Latency-Aware Network Slicing in 5G Packet xHaul Networks
    Autorzy:
    Klinkowski, Mirosław
    Powiązania:
    https://bibliotekanauki.pl/articles/27311921.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    5G
    radio access networks
    packet-switched xHaul
    latency-sensitive network
    network slicing
    traffic prioritization
    network optimization
    Opis:
    Packet-switched xHaul networks are a scalable solution enabling convergent transport of diverse types of radio data flows, such as fronthaul / midhaul / backhaul (FH / MH / BH) flows, between remote sites and a central site (hub) in 5G radio access networks (RANs). Such networks can be realized using the cost-efficient Ethernet technology, which enhanced with time-sensitive networking (TSN) features allows for prioritized transmission of latency-sensitive fronthaul flows. Provisioning of multiple types of 5G services of different service requirements in a shared network, commonly referred to as network slicing, requires adequate handling of transported data flows in order to satisfy particular service / slice requirements. In this work, we investigate two traffic prioritization policies, namely, flowaware (FA) and latency-aware (LA), in a packet-switched xHaul network supporting slices of different latency requirements. We evaluate the effectiveness of the policies in a networkplanning case study, where virtualized radio processing resources allocated at the processing pool (PP) facilities, for two slices related to enhanced mobile broadband (eMBB) and ultra-reliable low latency communications (URLLC) services, are subject to optimization. Using numerical experiments, we analyze PP cost savings from applying the LA policy (vs. FA) in various network scenarios. The savings in active PPs reach up to 40% − 60% in ring scenarios and 30% in a mesh network, whereas the gains in overall PP cost are up to 20% for the cost values assumed in the analysis.
    Źródło:
    International Journal of Electronics and Telecommunications; 2023, 69, 2; 335--340
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ultra-wide-angle Wireless Endoscope with a Backend-camera-controller Architecture
    Autorzy:
    Shim, D.
    Yi, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/226144.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wireless endoscope
    ultra wide-angle
    plastic lens
    backend camera controller
    serial image sensor
    ultra wideband
    Wi-Fi
    latency
    Opis:
    This paper presents a wireless endoscope with an ultra-wide FOV (Field of View) of 130° and HD resolution (1280x720 pixels). The proposed endoscope consists of a camera head, cable, camera controller, and wireless handle. The lens module with a 150° degrees AOV (Angle of View) is achieved using the plastic injection-molding process to reduce manufacturing costs. A serial CMOS image sensor using the MIPI (Mobile Industry Processor Interface) CSI-2 (Camera Serial Interface-2) interface physically separates the camera processor from the camera head. The camera head and the cable have a compact structure due to the BCC (Backend-Camera-Controller) architecture. The size of the camera head and the camera controller is 8x8x26 mm and 7x55 mm, respectively. The wireless handle supports a UWB (Ultra-Wide-Band) or a Wi-Fi communication to transmit video data. The UWB link supports a maximum data transfer rate of ~37 Mbps to transmit video data with a resolution of 1280x720 pixels at a frame rate of 30 fps in the MJPEG (Motion JPEG) format. Although the Wi-Fi link provides a lower data transfer rate (~8 Mbps Max.), it has the advantage of flexible interoperability with various mobile devices. The latency of the UWB link is measured to be ~0.1 sec. The Wi-Fi link has a larger latency (~0.5 sec) due to its lower data transfer rate. The proposed endoscope demonstrates the feasibility of a high-performance yet low-cost wireless endoscope using the BCC architecture. To the best of the author’s knowledge, the proposed endoscope has the largest FOV among all presently existing wireless endoscopes.
    Źródło:
    International Journal of Electronics and Telecommunications; 2017, 63, 1; 19-24
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Virtual Acoustics at the Service of Music Performance and Recording
    Autorzy:
    Woszczyk, W.
    Ko, D.
    Leonard, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/177293.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    virtual acoustics
    active acoustic architecture
    room acoustics
    room impulse respons
    low-latency convolution
    performer-room interaction
    music recording
    acoustic enhancement
    active acoustics
    Opis:
    Virtual or active acoustics refers to the generation of a simulated room response by means of elec- troacoustics and digital signal processing. An artificial room response may include sound reflections and reverberation as well as other acoustic features mimicking the actual room. They will cause the listener to have an impression of being immersed in virtual acoustics of another simulated room that coexists with the actual physical room. Using low-latency broadband multi-channel convolution and carefully measured room data, optimized transducers for rendering of sound fields, and an intuitive touch control user in- terface, it is possible to achieve a very high perceived quality of active acoustics, with a straightforward adjustability. The electroacoustically coupled room resulting from such optimization does not merely produce an equivalent of a back-door reverberation chamber, but rather a fully functional complete room superimposed on the physical room, yet with highly selectable and adjustable acoustic response. The utility of such active system for music recording and performance is discussed and supported with examples.
    Źródło:
    Archives of Acoustics; 2012, 37, 1; 109-113
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena przydatności funkcji latencja-natężenie odpowiedzi ABR w diagnostyce słuchu pacjentów z zespołem Downa
    Assessment of the Usefulness of the Latency-Intensity Function ABR Responses in Hearing Diagnosis Patients with Down’s Syndrome
    Autorzy:
    Sienkiewicz, Katarzyna
    Kochanek, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2180510.pdf
    Data publikacji:
    2022-02-22
    Wydawca:
    Polskie Towarzystwo Logopedyczne
    Tematy:
    zespół Downa (ZD)
    zaburzenia mowy
    zaburzenia słuchu
    słuchowe potencjały wywołane pnia mózgu – ABR
    funkcja latencja-natężenie (FLN)
    Down syndrome
    speech disorders
    hearing impairment
    ABR (Auditory brainstem responses)
    intensity-latency functions
    Opis:
    W artykule została omówiona przydatność funkcji latencja-natężenie w odpowiedziach ABR w diagnostyce słuchu u pacjentów z zespołem Downa. Celowość zastosowanie odmiennych parametrów FLN (funkcja latencja-natężenie) w przypadku zespołu Downa w diagnostyce różnicowej zaburzeń słuchu ma istotne znaczenie. Wyniki badań w niniejszej pracy pokazały, że nachylenie FLN u osób z ZD (Zespół Downa) jest inne niż w grupie kontrolnej, w związku z tym do diagnostyki różnicowej zaburzeń słuchu w ZD, konieczne jest stosowanie FLN dla osób z ZD, a nie dla osób w normie słuchowej bez ZD. Zaburzenia słuchu w przypadku osób z zespołem Downa wpływają istotnie na rozwój kompetencji językowych, komunikacyjnych i społecznych, dlatego tak ważna jest wczesna diagnostyka audiologiczna, wyposażenie w protezy słuchowe i opieka logopedyczna z uwzględnieniem treningu słuchowego u dzieci z zespołem Downa.
    The article discusses the usefulness of the latency-intensity function in ABR responses in the diagnosis of hearing in patients with Down’s syndrome. It is expedient to use different FLN parameters (latency-intensity function) in the case of Down syndrome in the differential diagnosis of hearing disorders. The results of the research in this study showed that the FLN slope in people with DS (Down’s syndrome) is different than in the control group, therefore, for the differential diagnosis of hearing disorders in DS, it is necessary to use FLN for people with DS and not for people with DS. auditory norm without DS. Hearing disorders in people with Down syndrome significantly affect the development of linguistic, communicative and social competences, which is why early audiological diagnostics, equipment with hearing prostheses and speech therapy, including auditory training in children with Down syndrome, are so important.
    Źródło:
    Logopedia; 2022, 51, 2; 193-210
    0459-6935
    Pojawia się w:
    Logopedia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decentralized device authentication for cloud systems with blockchain using skip graph algorithm
    Autorzy:
    Sammy, F.
    Vigila, S. Maria Celestin
    Powiązania:
    https://bibliotekanauki.pl/articles/38700867.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Podstawowych Problemów Techniki PAN
    Tematy:
    blockchain
    cloud computing
    edge computing
    fog computing
    latency
    power consumption
    ID algorithm
    single point failure
    skipgraph
    łańcuch bloków
    chmura obliczeniowa
    przetwarzanie brzegowe
    mgła obliczeniowa
    czas oczekiwania
    pobór energii
    algorytm ID
    awaria jednego punktu
    przeskok
    Opis:
    Cloud computing provides centralized computing services to the user on demand. Despite this sophisticated service, it suffers from single-point failure, which blocks the entire system. Many security operations consider this single-point failure, which demands alternate security solutions to the aforesaid problem. Blockchain technology provides a corrective measure to a single-point failure with the decentralized operation. The devices communicating in the cloud environment range from small IoT devices to large cloud data storage. The nodes should be effectively authenticated in a blockchain environment. Mutual authentication is time-efficient when the network is small. However, as the network scales, authentication is less time-efficient, and dynamic scalability is not possible with smart contract-based authentication. To address this issue, the blockchain node runs the skip graph algorithm to retrieve the registered node. The skip graph algorithm possesses scalability and decentralized nature, and retrieves a node by finding the longest prefix matching. The worst time complexity is O(log n) for maximum n nodes. This method ensures fast nodal retrieval in the mutual authentication process. The proposed search by name id algorithm through skip graph is efficient compared with the state-of-art existing work and the performance is also good compared with the existing work where the latency is reduced by 30–80%, and the power consumption is reduced by 32–50% compared to other considered approaches.
    Źródło:
    Computer Assisted Methods in Engineering and Science; 2023, 30, 2; 203-221
    2299-3649
    Pojawia się w:
    Computer Assisted Methods in Engineering and Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The motif of the window and the experience of latency in the work of Tadeusz Kantor
    Figura okna i doświadczenie latencji w twórczości Tadeusza Kantora
    Autorzy:
    Szalewska, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/2089368.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Polish experimental theatre
    the object in theatre and in performance
    theatre and space
    Tadeusz Kantor (1915–1990)
    The Theatre of Death
    Hans-Ulrich Gumbrecht (b. 1948)
    latency
    latencja
    Tadeusz Kantor
    Teatr Śmierci
    figury spacjalne
    przestrzeń w sztuce
    Opis:
    The window is a recurring image in the imaginarium and the art of Tadeusz Kantor. Fixed in his memory at an early age, it resurfaced in the spectacle Wielopole, Wielopole (1980) as a plain object "of the reality of the lowest kind", and in the 'cricotage' A Very Short Lesson (1988) as a quasi stage prop charged with metaphysical meaning. The window motif is also a persistent feature of his graphic art. Most notably, it appears in the drawing Man and window (1971), a picture for the Dead Class (Window) from 1983, an autothematic cycle of paintings You cannot look inside through the window with impunity (1988-1990), and Kantor's last dated drawing of pigeons being watched through a window. Kantor's fascination with the window as an objet d'art can be explained by his philosophical aesthetics (especially the use of objects as markers of the 'spaces' of the stage action). This article analyzes the image of the window as a 'site' of special significance in Kantor's art (an object that encapsulates the antynomy of inside/outside, or a claustrophobic incarceration/a barrier to entry) in the context of Hans-Ulrich Gumbrecht's theory of latency (i.e. the inability of throwing off the past, the suspension of time symbolized by artistic constructs of imprisonment).
    Źródło:
    Ruch Literacki; 2019, 5; 563-575
    0035-9602
    Pojawia się w:
    Ruch Literacki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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