Temat: transit time - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Evolution of Measurement of the Single Piece Mail Transit Time
Autorzy:: Kobus, R.
Raudszus, F.
Powiązania:: https://bibliotekanauki.pl/articles/309399.pdf
Data publikacji:: 2017
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: European Standards
measurements of transit time
postal services
Opis:: The article presents the evolution of measurement of the transit time of priority mail methodology used for postal services quality assessment from the point of view of home and small business senders based on European postal standards. The paper also considers the possibility of test cost reduction by further changes in the measurements methodology.
Źródło:: Journal of Telecommunications and Information Technology; 2017, 4; 109-114
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Optimization of selected parameters of SiGe HBT transistors
Autorzy:: Zaręba, A.
Jakubowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/309306.pdf
Data publikacji:: 2000
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: heterojunction bipolar transistor
base transit time
current gain
Opis:: SiGe-base HBTs with Gaussian doping distribution are modeled including the effect of the drift field and variable Ge concentration in the base on the diffusion coefficient. Two different Ge distributions in the base are considered: a triangular one and a box one.
Źródło:: Journal of Telecommunications and Information Technology; 2000, 3-4; 15-18
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analysis of transition times of pedestrians and passengers in an interchange node
Autorzy:: Dźwigoń, W.
Powiązania:: https://bibliotekanauki.pl/articles/196492.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: public transport
transit time
interchange nodes
transport publiczny
Opis:: Accurate design of infrastructure for public transport is the basis for the efficient functioning of traffic and passenger transportation. The article presents an analysis of the availability of public transport stops. The measure of the availability relates to access times to certain stops from other stops and the surroundings of the transport hub. The article discusses the scope and the objective of measuring pedestrian and passenger traffic. It also presents an analysis of transition times for the passengers who change their means of transport and need to reach a stop. The provided measurements were carried out on a two-level interchange tram-bus hub. Thus they should be part of any assessment of the quality of passenger service in the hub.
Źródło:: Zeszyty Naukowe. Transport / Politechnika Śląska; 2016, 92; 31-40
0209-3324
2450-1549
Pojawia się w:: Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Investigation of the influence of transit time on a multistate transportation network in tourism
Autorzy:: Nguyen, Thi-Phuong
Lin, Yi-Kuei
Powiązania:: https://bibliotekanauki.pl/articles/2038005.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:: multistate transportation network
reliability
transit time
budget limitation
time threshold
Opis:: Reliability has been widely used as a potential indicator of the performance assessment for several real-life networks. Focus on a multistate transportation network in tourism (MTN), this study evaluates the reliability of the MTN as a basis for investigating the influence of transit time. Reliability is the probability to fulfill transportation demand under the given time threshold and budget limitation and evaluated at various levels of transit times. An algorithm, which employs the boundary points and recursive sum of disjoint products technique, is proposed to evaluate the MTN reliability. According to the obtained results, this paper analyzes the influence of transit times on MTN reliability. Particularly, this paper discusses and provides some suggestions about the appropriate transit time to maintain reliability. Decision-makers in the tourism industry also can predetermine the significant drops of reliability to improve the relevant transit times. Besides, the proposed investigation is indicated and proved through an illustrative example and a practical case.
Źródło:: Eksploatacja i Niezawodność; 2021, 23, 4; 670-677
1507-2711
Pojawia się w:: Eksploatacja i Niezawodność
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Investigation of the influence of transit time on a multistate transportation network in tourism
Autorzy:: Nguyen, Thi-Phuong
Lin, Yi-Kuei
Powiązania:: https://bibliotekanauki.pl/articles/2038104.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:: multistate transportation network
reliability
transit time
budget limitation
time threshold
Opis:: Reliability has been widely used as a potential indicator of the performance assessment for several real-life networks. Focus on a multistate transportation network in tourism (MTN), this study evaluates the reliability of the MTN as a basis for investigating the influence of transit time. Reliability is the probability to fulfill transportation demand under the given time threshold and budget limitation and evaluated at various levels of transit times. An algorithm, which employs the boundary points and recursive sum of disjoint products technique, is proposed to evaluate the MTN reliability. According to the obtained results, this paper analyzes the influence of transit times on MTN reliability. Particularly, this paper discusses and provides some suggestions about the appropriate transit time to maintain reliability. Decision-makers in the tourism industry also can predetermine the significant drops of reliability to improve the relevant transit times. Besides, the proposed investigation is indicated and proved through an illustrative example and a practical case.
Źródło:: Eksploatacja i Niezawodność; 2021, 23, 4; 670-677
1507-2711
Pojawia się w:: Eksploatacja i Niezawodność
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Modeling SiGe-base HBT using APSYS 2000 - a 2D simulator
Autorzy:: Linkowski, A.
Łukasiak, L.
Jakubowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/308023.pdf
Data publikacji:: 2004
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: base transit time
cut-off frequency
HBT
SiGe-base
Opis:: The paper is devoted to optimization of SiGe-base HBT with respect to operation speed by means of numerical simulation. The influence of design parameters on f(T) is studied.
Źródło:: Journal of Telecommunications and Information Technology; 2004, 1; 36-38
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Regional resting state perfusion variability and delayed cerebrovascular uniform reactivity in subjects with chronic carotid artery stenosis
Autorzy:: Szarmach, Arkadiusz
Kaszubowski, Mariusz
Sabisz, Agnieszka
Frydrychowski, Andrzej
Halena, Grzegorz
Piskunowicz, Maciej
Dzierzanowski, Jarosław
Studniarek, Michał
Szurowska, Edyta
Winklewski, Pawel
Powiązania:: https://bibliotekanauki.pl/articles/1038538.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: chronic carotid artery stenosis
computed tomography perfusion
acetazolamide test
cerebral blood flow
cerebral blood volume
mean transit time
time to peak
Opis:: The aim of this study was to assess regional perfusion at baseline and regional cerebrovascular resistance (CVR) to delayed acetazolamide challenge in subjects with chronic carotid artery stenosis. Sixteen patients (ten males) aged 70.94±7.71 with carotid artery stenosis ≥ 90% on the ipsilateral side and ≤ 50% on the contralateral side were enrolled into the study. In all patients, two computed tomography perfusion examinations were carried out; the first was performed before acetazolamide administration and the second 60 minutes after injection. The differences between mean values were examined by paired two-sample t-test and alternative nonparametric Wilcoxon's test. Normality assumption was examined using W Shapiro-Wilk test. The lowest resting-state cerebral blood flow (CBF) was observed in white matter (ipsilateral side: 18.4±6.2; contralateral side: 19.3±6.6) and brainstem (ipsilateral side: 27.8±8.5; contralateral side: 29.1±10.8). Grey matter (cerebral cortex) resting state CBF was below the normal value for subjects of this age: frontal lobe - ipsilateral side: 30.4±7.0, contralateral side: 33.7±7.1; parietal lobe - ipsilateral side: 36.4±11.3, contralateral side: 42.7±9.9; temporal lobe - ipsilateral side: 32.5±8.6, contralateral side: 39.4±10.8; occipital lobe - ipsilateral side: 24.0±6.0, contralateral side: 26.4±6.6). The highest resting state CBF was observed in the insula (ipsilateral side: 49.2±17.4; contralateral side: 55.3±18.4). A relatively high resting state CBF was also recorded in the thalamus (ipsilateral side: 39.7±16.9; contralateral side: 41.7±14.1) and cerebellum (ipsilateral side: 41.4±12.2; contralateral side: 38.1±11.3). The highest CVR was observed in temporal lobe cortex (ipsilateral side: +27.1%; contralateral side: +26.1%) and cerebellum (ipsilateral side: +27.0%; contralateral side: +34.6%). The lowest CVR was recorded in brain stem (ipsilateral side: +20.2%; contralateral side: +22.2%) and white matter (ipsilateral side: +18.1%; contralateral side: +18.3%). All CBF values were provided in milliliters of blood per minute per 100 g of brain tissue (ml/100g/min). Resting state circulation in subjects with carotid artery stenosis is low in all analysed structures with the exception of insula and cerebellum. Acetazolamide challenge yields relatively uniform response in both hemispheres in the investigated population. Grey matter is more reactive to acetazolamide challenge than white matter or brainstem.
Źródło:: Acta Biochimica Polonica; 2018, 65, 1; 151-162
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Ocena czasu oczekiwania na przystankach dla losowych zgłoszeń pasażerów
Assessment of waiting time in urban transit system for random passenger arrival at a stop
Autorzy:: Horbachov, P.
Chyghyk, V.
Powiązania:: https://bibliotekanauki.pl/articles/249121.pdf
Data publikacji:: 2014
Wydawca:: Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:: miejski system przesiadkowy
czas oczekiwania
teoria prawdopodobieństwa
urban transit system
waiting time
probability theory
Opis:: W artykule zdefiniowano problem i przedstawiono ujęcie analityczne modelowania obliczeń czasu oczekiwania na przystanku, gdy zgłoszenie pasażera na przystanek na charakter losowy. Rozważany jest szeroki zakres zmienności przebiegów tras linii – poczynając od przyjęcia pełnej zgodności interwałów kursowania linii w rozkładach jazdy do całkowicie losowych odjazdów pojazdów z przystanków pośrednich. Zostały również porównane doświadczalne i teoretyczne oszacowania czasów oczekiwania na przystankach dla podstawowych linii.
The paper presents the problem definition and analytical modeling for waiting time calculation in urban transit system when passengers arrive at a transit stop randomly. The wide range of variants of the urban transit routes operation services is considered – from full implementation of the identical headways schedule to the completely random departure time of transport units from a terminal. Also, experimental and theoretical estimates of a passenger waiting time for a certain route are compared.
Źródło:: Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne; 2014, 1(103); 87-98
1231-9171
Pojawia się w:: Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Evaluating accessibility of small communities via public transit
Autorzy:: Danesi, Antonio
Tengattini, Simone
Powiązania:: https://bibliotekanauki.pl/articles/1833639.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: public transit
travel impedance
schedule delay
time-of-day preference curves
transport publiczny
podróż
opóźnienia
krzywa preferencji pory dnia
Opis:: Accessibility to and from urban centres allows small communities’ dwellers to participate in primary activities and use essential services that are not available on-site, such as educational, work and medical services. Public transport networks are supposed to enhance accessibility and pursue equity principles, overcoming socio-economical differences among people that can exacerbate during crisis. In this paper a methodology is proposed and implemented to assess small communities’ accessibility via public transit. A metric is defined based on the calculation of total travel time, taken as a proxy of travel impedance, with consideration of in-vehicle time, schedule delay and users’ arrival and departure preference curves (i.e. time-of-day functions). A “rooftops” model is specified and implemented under the assumption that travellers cannot accept (scheduled) late arrival or early departure time penalties before and after the participation in their activities in the main urban centre, as many activities rarely admit time-flexibility. Also, a public transport specific impedance factor (PTSIF) is proposed, in order to account for travel impedance determinants, which are a consequence of service scheduling and routing decisions and not due to inherent geographical and infrastructural disadvantages affecting car users too. An application of the methodology for the city of Cesena, Italy, and 90 surrounding small communities is presented. The city is served by train and bus services. Assessment of small communities' accessibility based on both total travel time and PTSIF is presented and discussed. This practice-ready quantitative method can help transport professionals to evaluate impacts on small communities’ accessibility in light of public transport service changes or reduction. Quantitative approach to support strategic decisions is needed, for example, both to assess public transport strengthening politics against depopulation of rural and marginal mountainous areas and to mitigate the effects of possible increasing concentration of services towards high-demand lines, which may follow as a consequence of budget cuts or contingencies, such as vehicle capacity reductions required by sanitary emergencies.
Źródło:: Archives of Transport; 2020, 56, 4; 59-72
0866-9546
2300-8830
Pojawia się w:: Archives of Transport
Dostawca treści:: Biblioteka Nauki

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