Temat: range determination - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Automation of determining the range of values for MEMS resistive parameters
Autorzy:: Teslyuk, V.
Beregovska, K.
Pukach, A.
Ivantsiv, R. A.
Powiązania:: https://bibliotekanauki.pl/articles/410744.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:: MEMS
resistor
range determination
automation
Opis:: This paper is devoted to the development of automating methods of the ranges determination process of the resistance values measurements for the investigated MEMS resistive parameters (strain gauges, piezoresistors, thermistors, magnetoresistors and photoresistors, etc.), electric resistance of which is changing during functioning of MEMS, in order to improve the accuracy of investigated resistive parameter value determining and optimization of the entire measuring process in general. The developed method for automation of values range determination of the MEMS resistive parameters measurand is based on the designed models and algorithm of automation for the process of an exemplary resistor value determination. A measurand of the investigated MEMS resistive parameter is located in a neighborhood of this exemplary resistor value. The abovementioned method is also based on the developed model and algorithm for automation of the values range determination of the MEMS resistive parameters measurand.
Źródło:: ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 2; 105-112
2084-5715
Pojawia się w:: ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The Alive-in-Range Medium Access Control Protocol to Optimize Queue Performance in Underwater Wireless Sensor Networks
Autorzy:: Raina, V.
Jha, M. K.
Bhattacharya, P. P.
Powiązania:: https://bibliotekanauki.pl/articles/308608.pdf
Data publikacji:: 2017
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: Alive-in-Range MAC
effective path determination
mobile sink
optimum throughput path determination
underwater wireless sensor network
Opis:: Time synchronization between sensor nodes to reduce the end-to-end delay for critical and real time data monitoring can be achieved by cautiously monitoring the mobility of the mobile sink node in underwater wireless sensor networks. The Alive-in-Range Medium Access Control (ARMAC) protocol monitors the delay of sensitive, critical and real-time data. The idea evolves as it involves reduction in duty cycle, precise time scheduling of active/sleep cycles of the sensors, monitoring the mobility of the sink node with the selection of appropriate queues and schedulers. The model for the path loss due to attenuation of electromagnetic wave propagation in the sea water is explained. The three-path reﬂection model evaluating reﬂection loss from the air-water and watersand interfaces as a function of distance between sensors and water depth is introduced. The algorithms for eﬀective path determination and optimum throughput path determination are elaborated. The results verify that implementation of the Alive-in-Range MAC protocol has reduced the total number of packets dropped, the average queue length, the longest time in queue, the peak queue length and the average time in queue signiﬁcantly, making it relevant for critical and real-time data monitoring.
Źródło:: Journal of Telecommunications and Information Technology; 2017, 4; 31-46
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:: Investigation of the Accuracy of Photogrammetric Point Determination Using Amateur/Non-Metric Cameras
Autorzy:: Akinade, B. A.
Powiązania:: https://bibliotekanauki.pl/articles/1030964.pdf
Data publikacji:: 2020
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: 3D models
Amateur cameras
Digital close-range photogrammetry
Point determination
RMSD
RWPs
Opis:: With the rapid development in the production of digital cameras and low cost of these amateur cameras, it is important to determine the possibility of using them in digital close-range photogrammetry. The main objective of this work is to investigate the accuracy attainable by using these amateur cameras for point determination, with the accuracy of point determination by total-station instrument as a reference. For this purpose, a building façade was surveyed and processed by photogrammetric and conventional survey methods. The photogrammetric survey was done using four different amateur cameras, and the conventional survey was carried out using total-station. Thirty-seven (37) points within an opened traverse were established on the exterior walls of the structure to serve as standard geo-reference points for all accuracy comparisons and they are referred to as Reference wall points (RWPs). Twenty-eight (28) of these RWPs were used as checkpoints while the other nine (9) points were used as the control points for the models. The 3D coordinates of these reference wall points were then measured with a total-station instrument. After photographs were taken, they were processed with Agisoft PhotoScan photogrammetric software, where different 3D models were constructed for the four set of photographs taken with the amateur cameras. The photogrammetric coordinates of the reference wall points were determined from the respective models. The coordinates measured from each model were then compared with the ones obtained with the total-station to determine their relative discrepancies and accuracies. The accuracy of each model was determined using the Root Mean Square Deviation (RMSD) approach. Based on the type of amateur cameras used, this work has shown that close-range photogrammetric procedure can provide accurate enough result to be used as an alternative to measurements by total station in as-built surveys or other relatively small works of similar accuracy requirements.
Źródło:: World Scientific News; 2020, 145; 298-312
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Wpływ rozwoju eksploatacji w jednej z kopalń JSW na wartości parametrów teorii wpływów Budryka - Knothego
Impact of exploitation development in one of "Jastrzębska Spółka Węglowa" coal mines on parameters values of the Budryk-Knothe theory
Autorzy:: Mielimąka, R.
Orwat, J.
Powiązania:: https://bibliotekanauki.pl/articles/166561.pdf
Data publikacji:: 2016
Wydawca:: Stowarzyszenie Inżynierów i Techników Górnictwa
Tematy:: parametry teorii wpływów W. Budryka — S. Knothego
wyznaczanie wartości parametrów
zakres i rozwój eksploatacji
pomierzone i teoretyczne obniżenia terenu górniczego
parameters of the Budryk-Knothe impacts theory
determination of parameters values
range and development of exploitation
measured and theoretical subsidences of mining area
Opis:: W artykule przedstawiono sposób wyznaczenia wartości parametrów teorii wpływów W. Budryka - S. Knothego z rozszerzeniem wzorów zaproponowanych przez prof. Jana Białka (współczynnika osiadania skał stropowych a, tangensa kąta β określającego zasięg wpływów głównych tgβ oraz parametru obrzeża eksploatacyjnego Aobr) oraz zmianę ich wartości w zależności od zwiększania zakresu eksploatacji. Wartości parametrów charakterystyczne dla danego górotworu określono na podstawie wyników obserwacji geodezyjnych przeprowadzonych na linii pomiarowej i reprezentujących obniżenia terenu górniczego spowodowane łączną eksploatacją pokładów 338/2 i 358/1 oraz 338/2, 358/1 i 341. Parametry teorii wpływów dla górotworu naruszonego tylko i wyłącznie eksploatacjąjednego pokładu (p.341) wyznaczono na podstawie różnicy wartości obniżeń wywołanych eksploatacją kolejno dwóch i trzech pokładów.
This paper presents the method of determining the parameters values of The Budryk-Knothe Theory, with the enlargement of the model proposed by prof. Jan Białek ('a' - a coefficient of roof rocks subsidence, 'tgβ' - determining the range of the main impacts, 'Aobr' - a parameter of exploitation periphery), and of changing their values depending on the growing exploitation range. The values of parameters characteristic for this rock mass were determined on the basis of the results of the geodetic measurements, carried out on the measuring line and representing the subsidences of mining area caused by combined exploitation of 338/2, 358/1, 338/2, 358/1 and 341 coal beds. The parameters of impacts theory for the rock mass disturbed due to exploitation were calculated only for one coal bed (341) on the basis of difference between the values of subsidences induced successively in line with the exploitation of the second and third coal bed.
Źródło:: Przegląd Górniczy; 2016, 72, 1; 36-42
0033-216X
Pojawia się w:: Przegląd Górniczy
Dostawca treści:: Biblioteka Nauki

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