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    Tytuł:
    The development of telephone services in Poland (1989-1996)
    Autorzy:
    Wilk, Waldemar
    Powiązania:
    https://bibliotekanauki.pl/articles/2027699.pdf
    Data publikacji:
    1989-06-01
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Źródło:
    Miscellanea Geographica. Regional Studies on Development; 1998, 8; 171-178
    0867-6046
    2084-6118
    Pojawia się w:
    Miscellanea Geographica. Regional Studies on Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fibonacci and Telephone Numbers in Extremal Trees
    Autorzy:
    Bednarz, Urszula
    Włoch, Iwona
    Powiązania:
    https://bibliotekanauki.pl/articles/31342435.pdf
    Data publikacji:
    2018-02-01
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
    Tematy:
    edge colouring
    tripod
    Fibonacci numbers
    telephone numbers
    Opis:
    In this paper we shall show applications of the Fibonacci numbers in edge-coloured trees. In particular we determine the successive extremal graphs in the class of trees with respect to the number of (A, 2B)-edge colourings. We show connections between these numbers and Fibonacci numbers as well as the telephone numbers.
    Źródło:
    Discussiones Mathematicae Graph Theory; 2018, 38, 1; 121-133
    2083-5892
    Pojawia się w:
    Discussiones Mathematicae Graph Theory
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The development of an underwater telephone for digital communication purposes
    Autorzy:
    Schmidt, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/331641.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Akustyczne
    Tematy:
    digital signal processor
    spread spectrum
    DDC
    DUC
    STANAG 1074/1475
    Opis:
    The underwater telephone HTL-10 has been designed to provide voice and data communication between helicopter and submarines using acoustic waves. It works in a halfduplex mode and uses analogue power-efficient modulation in the form of a single side-band, suppressed carrier, in a wide range of frequencies. It generates the transmitted signal, and processes the received signals. It is implemented with the use of digital signal processing techniques. Although it was designed several years ago, the flexible structure of the underwater telephone ensures a convenient platform for the implementation of various types of communication, as well as testing. This ability is due to the particular characteristics of the digital signal-processing module, which was designed by the author, both in hardware and software. The main elements of the module consist of the fixed-point signal processor, and the floating-point high performance digital signal processor. The article demonstrates the ability to adapt HTL-10 to implement digital communication in shallow waters, with a robust low data rate spread spectrum approach.
    Źródło:
    Hydroacoustics; 2016, 19; 341-352
    1642-1817
    Pojawia się w:
    Hydroacoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Note about sequences of extrema \((A,2B)\)-edge coloured trees
    Autorzy:
    Bednarz, Urszula
    Włoch, Iwona
    Powiązania:
    https://bibliotekanauki.pl/articles/747039.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Tematy:
    Edge colouring
    trees
    Fibonacci numbers
    telephone numbers
    Opis:
    In this paper we determine successive extremal trees with respect to the number of all \((A,2B)\)-edge colourings.
    Źródło:
    Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica; 2017, 71, 2
    0365-1029
    2083-7402
    Pojawia się w:
    Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The wireless transmission system for medical evidences collections
    Autorzy:
    Sapota, G.
    Wróbel, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/333993.pdf
    Data publikacji:
    2003
    Wydawca:
    Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
    Tematy:
    system transmisji telefonu GPRS
    jednoukładowy kontroler
    data transmission system GPRS telephone
    single-chip controller
    Opis:
    This work introduces a cheap system of data sending through the internet services using the telephone installed in GPRS system. The system enables sending data with the speed up till 115,2 kbps, where only the quantity of data instead of the time of connection with net is to be paid for. The basis of an introduced system is the Time Port Motorola Telephone as well as the system based on the processor 8051. The described device is universal and may serve for sending such data as: the current position (of persons, vehicles etc), meteorological data, data records of working devices in a given place, biomedical information in monitoring of treated patients or persons undergoing clinical tests in movement.
    Źródło:
    Journal of Medical Informatics & Technologies; 2003, 6; IT111-116
    1642-6037
    Pojawia się w:
    Journal of Medical Informatics & Technologies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Historical Perspectives of Development of Antique Analog Telephone Systems
    Autorzy:
    Patil, V. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/308813.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    antique telephones
    common battery systems
    cross-bar switches
    PSTN
    voice band communication
    voice communication
    strowger switches
    Opis:
    Long distance voice communication has been always of great interest to human beings. His untiring efforts and intuition from many years together was responsible for making it to happen to a such advanced stage today. This paper describes the development time line of antique telephone systems, which starts from the year 1854 and begins with the very early effort of Antonio Meucci and Alexander Graham Bell and ends up to the telephone systems just before digitization of entire telecommunication systems. The progress of development of entire antique telephone systems is highlighted in this paper. The coverage is limited to only analog voice communication in a narrow band related to human voice.
    Źródło:
    Journal of Telecommunications and Information Technology; 2015, 3; 70-98
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of the socio-demographic characteristics of the young on mobile telephone payment usage levels
    Autorzy:
    Wiercioch, Magdalena
    Powiązania:
    https://bibliotekanauki.pl/articles/2108161.pdf
    Data publikacji:
    2021-06-29
    Wydawca:
    Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
    Tematy:
    electronic banking
    electronic mobile payment
    financial awareness
    high school
    students
    Opis:
    The study aims to determine the impact of high school students’ socio-demographic characteristics from Podkarpackie Voivodeship on the level of use of modern forms of payment and banking services and to assess the security levels of these tools. The data was obtained through a survey where the research tool was a questionnaire conducted among students. The study of the literature on the subject and reports from other studies on similar topics were used. Research has shown that socio-demographic characteristics influence the level of use of some modern payment and banking services such as secure online payments, mobile applications for online shopping and electronic banking. Young male respondents expressed higher ratings for mobile banking security as well as for electronic payments. Similarly, the level of parents’ education was associated with an increase in students’ positive assessment of the security of mobile banking and electronic payments. The results suggest a need to increase financial knowledge and awareness among young people and their parents in modern forms of payment and banking services.
    Źródło:
    Przedsiębiorczość - Edukacja; 2021, 17, 1; 234-243
    2083-3296
    2449-9048
    Pojawia się w:
    Przedsiębiorczość - Edukacja
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recognition of speaker’s age group and gender for a large database of telephone-recorded voices
    Autorzy:
    Staroniewicz, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/2202432.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    speech processing
    automatic age recognition
    przetwarzanie mowy
    automatyczne rozpoznawanie wieku
    Opis:
    The paper presents the results of the automatic recognition of age group and gender of speakers performed for the large SpeechDAT(E) acoustic database for the Polish language, containing recordings of 1000 speakers (486 males/514 females) aged 12 to 73, recorded in telephone conditions. Three age groups were recognised for each gender. Mel Frequency Cepstral Coefficients (MFCC) were used to describe the recognized signals parametrically. Among the classification methods tested in this study, the best results were obtained for the SVM (Support Vector Machines) method.
    Źródło:
    Vibrations in Physical Systems; 2022, 33, 2; art. no. 2022203
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enzymatic activity and biotypes of Candida fungi isolated from the surfaces of mobile phones and hands
    Autorzy:
    Kordecka, A.
    Krajewska-Kułak, E.
    Łukaszuk, C.
    Kraszyński, M.
    Kraszyńska, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1918454.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Medyczny w Białymstoku
    Tematy:
    Candida
    hands
    telephone
    API Zym
    Opis:
    Introduction: The secretion of hydrolytic enzymes is a factor facilitating pathogenic fungi invasion into the tissues. Purpose: To assess hydrolytic activity and biotypes of Candida strains isolated from samples collected from the surfaces of mobile phones and the hands of their owners. Materials and methods: The study included 175 mobile telephones and hands. The API ZYM test was used to assess enzymatic activity; biotyping was performed according to Williamson’s classification. Results: Among the strains isolated from hand surfaces, the highest activity was shown for C. albicans (acid phosphatase, esterase), C. glabrata (leucine arylamidase, acid phosphatase, esterase), and C. krusei (acid phosphatase). Of the strains isolated from phone surfaces, the highest activity was shown for C. albicans (leucine arylamidase, acid phosphatase), C. glabrata (esterase, leucine arylamidase, esterase lipase), and C. krusei (acid phosphatase). Biotypes G, B and F were dominant for all types of fungi, both for strains isolated from phones and hand surfaces. Additionally, biotype A was dominant for C. krusei. Conclusions: C. albicans, C. glabrata, and C. krusei showed activity for all hydrolytic enzymes. The strongest correlation between the hydrolytic activity of fungi isolated from hand and phone surfaces was shown for C. albicans.
    Źródło:
    Progress in Health Sciences; 2017, 7(1); 18-30
    2083-1617
    Pojawia się w:
    Progress in Health Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Periodic health examinations during a pandemic
    Autorzy:
    Janus, Justyna
    Kołton, Daria
    Kępowicz, Nikoletta
    Kobos, Magdalena
    Jurkiewicz, Beata
    Powiązania:
    https://bibliotekanauki.pl/articles/2098273.pdf
    Data publikacji:
    2021-09-30
    Wydawca:
    Państwowa Wyższa Szkoła Zawodowa w Tarnowie
    Tematy:
    badanie okresowe
    teleporada
    porada lekarska
    pandemia COVID-19
    periodic health examination
    telephone advice
    medical adivice
    COVID-19 pandemic
    Opis:
    Introduction: The coronavirus pandemic has changed daily lives. These changes affect many aspects of lives including periodic health examinations. Specialists warn that in the era of the pandemic people abandon examinations. This is a very dangerous phenomenon, which can negatively affect health and general well-being. The aim of this study was to determine the frequency of periodic health examinations during the pandemic period including the use of telephone advice services.Material and methods: The study was carried out in March 2021 among 147 people (120 women and 27 men), in the age range of 18-76 years. The study was carried out by the method of diagnostic survey, with the use of questionnaire technique (authors’ questionnaire). Questions included knowledge of prevention, frequency of periodic health examinations, and health services received by the respondents during the pandemic. Analysis of the survey results provided information on current health problems, time of diagnosis, and course of treatment to date. Results: During the pandemic, the majority of respondents had the opportunity to use a telephone advice, with women more likely to use the telephone advice than men (64.2% vs. 37.0%; p = 0.010). 36.9% of the respondents were satisfied with the service. The main reasons for dissatisfaction with the telephone advice included: inability to examine (33.3%), short telephone advice time (24.2%), misdiagnosis or ineffective treatment (21.2%), long waiting time, difficult contact with the facility (15.2%). Among telephone advice users, 39.1% had chronic diseases; among non- telephone advice users, the percentage was lower at 18.3%. Telephone advice users were significantly less likely to say they did not have periodic health examinations or did not remember when they had them done compared to non- telephone advice users (p = 0.019).Conclusions: During the pandemic, the majority of respondents had the opportunity to use telephone advice. Only 1/3 were satisfied with the telephone advice, and the main reasons for dissatisfaction were as follows: inability to examine, short telephone advice time, misdiagnosis or ineffective treatment. Telephone advice users were significantly less likely to say they did not have periodic examinations or could not remember when they had them done compared to non-telephone advice users.
    Źródło:
    Health Promotion & Physical Activity; 2021, 16, 3; 26-31
    2544-9117
    Pojawia się w:
    Health Promotion & Physical Activity
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessing the information flows and established their effects on the results of driver’s activity
    Autorzy:
    Afanasieva, I.
    Galkin, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/223488.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    EEG
    driver
    telephone
    billboard
    road advertisement
    driving behaviour
    kierowca
    telefon
    bilbordy
    reklamy drogowe
    zachowanie kierowcy
    Opis:
    The modern person in an era of information breakthrough faces the problem of choosing and processing information coming to her. Human activities in the systems "driver - vehicle - road - environment" - not an exception. The role and importance of information in all spheres of human activity have increased significantly. The paper aims to find and assess the patterns of information flow impact on the driver performance in the "driver - vehicle - road - environment" system. Electroencephalography (EEG) method using the Neurocom hardware and software complex used to determine the change in the electrical activity of the driver's brain during the processing of input information; electrocardiography method using the hardware and software complex «Cardiosens», used to determine the fatigue level of the driver during research; tabular method of double letter cancelation test, involved in determining the time of distraction from the performance of the driver's core activity in laboratory experiments. Using mathematical modelling methods and methods, mathematical models of EEG and ECG parameters influence on the time of distraction from execution by the driver of the main activity were obtained. Regression models of the influence of the aggregate of the quantitative characteristics of the intensity of fast (beta-rhythm – β and gamma-rhythm – γ ) and slow (delta- rhythm – δ and theta-rhythm –θ) EEG signals are proposed. The regression equations obtained for determining the regularities of the influence of information flow on the results of activity of road users are defined. Set up that the time of the driver's distraction from performing the core activity can reach from 0,94 s to 4,77 s depending on particular conditions. Information flows arising from the location of noticeable advertising in the driver's field of vision when driving a vehicle, distract his attention from 0,23 s to 2,81 s. The practical significance of obtained results is the possibility to use them in coordinating the location of advertising structures and organizing the work of drivers while driving a vehicle.
    Źródło:
    Archives of Transport; 2018, 45, 1; 7-23
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Separation of Copper from Telephone Cables by Gravity Concentration
    Separacja miedzi z kabli telefonicznych za pomocą metody wzbogacania grawitacyjnego
    Autorzy:
    Bedekovic, G.
    Sobota, I.
    Lasic, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/318244.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    e-odpady
    kable UTP / STP
    recykling
    miedź
    wzbogacanie grawitacyjne
    e-waste
    UTP/STP cables
    recycling
    copper
    gravity concentration
    Opis:
    Waste electric and electronic equipment (WEEE) is the fastest growing waste stream compared to other types of waste and thus there is an increasing need for its efficient management. Disposal at landfills is not desired by the fact that this type of waste contains a number of useful materials that can be used again, as well as dangerous substances for which disposal is not desirable. This paper presents the results of laboratory tests of separating copper from telephone (UTP and STP) cables that are an integral part of electronic equipment. Testing was carried out by method of gravity concentration using Wilfley shaking table and Humphreys spiral concentrator. The results showed that these devices can be used successfully to obtain copper concentrate whereby better results were obtained at the shaking table.
    Zużyty sprzęt elektryczny i elektroniczny (WEEE) to najszybciej rosnący strumień odpadów w porównaniu do innych rodzajów odpadów, a tym samym powstaje zapotrzebowanie na jego skuteczne zarządzanie. Unieszkodliwianie odpadów na składowiskach odpadów nie jest pożądane z uwagi na to, że ten rodzaj odpadów zawiera wiele użytecznych materiałów, które można wykorzystać ponownie, a także substancje niebezpieczne, których składowanie wymaga spełniania rygorystycznych wymagań. W artykule przedstawiono wyniki badań laboratoryjnych separacji miedzi z kabli telefonicznych (UTP i STP), które stanowią integralną część sprzętu elektronicznego. Separację przeprowadzono metodą wzbogacania grawitacyjnego na stole wytrząsającego Wilfley i Humphreys oraz separatorze spiralnym. Uzyskane wyniki wykazały, że te urządzenia mogą być z powodzeniem stosowane do uzyskania koncentratu miedzi.
    Źródło:
    Inżynieria Mineralna; 2018, R. 19, nr 1, 1; 67-72
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stealthy Information Transmission in the Terrestrial GMDSS Radiotelephone Communication
    Autorzy:
    Shishkin, A. V.
    Koshevoy, V. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/116053.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Maritime Distress and Safety System (GMDSS) Audio Watermarking (AW)
    Automatic Radio Telephone Identification System (ARTIS) Very High Frequency (VHF)
    Terrestrial GMDSS Radiotelephone Communication Radiocommunication
    Intersymbol Interference (ISI)
    Orthogonal Frequency Division Multiplexing (OFDM)
    Opis:
    Audio watermarking (AW) technology is considered for stealthy information embedding directly into audio signal. Inherent in analog radiotelephone channel interferences against watermarks are analyzed. Robust encoding/decoding algorithms are presented and appropriate project of AW system named as Automatic Radio Telephone Identification System (ARTIS) is proposed. Experimental results for the practical VHF radio channel are presented. Relating on processing complexity the designed system enables imperceptibly transmit data on a rate up to 260 bit/sec in the standard VHF radio channel. ARTIS provides the full compatibility with the existing radio installation, and doesn’t require replacement of standard VHF transceivers and operational procedures. Besides, automatic identification the system may be used in the special applications, for example, under the threat of terrorist attack; generally contributes to navigation safety and information security.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 4; 541-548
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the History of Communication Development: the First Intercontinental Connection
    ДО ІСТОРІЇ РОЗВИТКУ КОМУНІКАЦІЙ: ПЕРШІ МІЖКОНТИНЕНТАЛЬНІ ЗВ’ЯЗКИ
    Autorzy:
    Zernetska, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/894395.pdf
    Data publikacji:
    2016
    Wydawca:
    National Academy of Sciences of Ukraine. Institute of World History
    Tematy:
    traditional and new (telegraph, telephone, radio) communications, World War I, tactical and strategic purposes, international relations’ system
    традиційні та нові (телеграф, телефон, радіо) комунікації, Перша світова війна, стратегічні і тактичні міжнародно-політичні цілі, система міжнародних відносин
    Opis:
    Вперше в історичній та політичній науках системно досліджується початок електричного міжконтинентального зв’язку в історії розвитку комунікації, що охоплює період з середини ХІХ ст. до кінця Першої світової війни. Особлива увага приділяється використанню телеграфу Британською Імперією, котра була першою країною в світі, що проклала трансатлантичний та транстихоокеанський підводні телеграфні кабелі. США були другими у цьому змаганні. Це означало, що ці країни здолали останній бар’єр на шляху до створення світових комунікацій на початку ХХ ст. Розглядаються політичні, дипломатичні, економічні, комерційні аспекти цього домінування Британської Імперії та США до та під час Першої світової війни. Здійснюється комплексний аналіз застосування цих комунікацій (телеграф, телефон, радіо) країнами-учасниками цієї війни у стратегічних, тактичних і міжнародно-політичних цілях.
    The first intercontinental links in the history of communication development that encompass the period between 1850’s and the end of World War I have been systematically detected for the first time in historical and political sciences. Special attention has been given to the global usage of telegraph by the British Empire which was the first country in the world to lay transatlantic and transpacific cables. The USA was the second in this competition. This means that these countries overcame the last barrier to world communications at the very beginning of the XXth century. Political, diplomatic, economic, commercial aspects of this dominance by the British Empire and the USA before and during World War I have been observed. A complex analysis of these communications usage (telegraph, telephone, radio) by the countries – main participants of this war for tactical, strategic, international and political purposes has been conducted.
    Źródło:
    Проблеми всесвітньої історії; 2016, 1; 183-198
    2707-6776
    Pojawia się w:
    Проблеми всесвітньої історії
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Is making the conclusion of contracts for the provision of broadband internet access service conditional upon the conclusion of a contract for telephone services prohibited? Case comment to the preliminary ruling of the Court of Justice of 11 March 2010 Telekomunikacja Polska SA v President of Office of Electronic Communications (Case C-522/08)
    Autorzy:
    Pisarkiewicz, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/530387.pdf
    Data publikacji:
    2011-11-30
    Wydawca:
    Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
    Źródło:
    Yearbook of Antitrust and Regulatory Studies; 2011, 4(5); 235-240
    1689-9024
    2545-0115
    Pojawia się w:
    Yearbook of Antitrust and Regulatory Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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