Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "multiple" wg kryterium: Temat

  Lista filtrów

Dostawca treści

Wyrównaj
Wyświetlanie 1-15 z 886
Tytuł:
Multiple Endpoints
Wielokrotne punkty krańcowe
Autorzy:
Parys, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/906882.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
multiple comparisons
multiple endpoints
bootstrap approach
Opis:
In ANOVA we are mainly based on inter-treatment comparisons. Another common problems arising in biometric studies (especially in biomedical studies) is that of comparing two groups of patients (treatment and a control group) based on multiple response (called multiple endpoints). In this paper we present the continuos and discrete approaches to multiple endpoints. In the case of continuous multiple endpoints we have common assumption in that the covariance matrices in group of the control and observation are equal. Let ρ be the correlation coefficient between Y₁, and Yj endpoints and ρ₁, be the raw ρ-value obtained using some tests statistics for the i-th endpoints. We can also proposed a general bootstrap approach which can be used to estimate the ρ-value without making any parametric and distributional or correctional assumptions. Binary outcomes are common in medical studies. We present the modified Bonfferroni procedures and permutational procedures and we compare these procedures to each other.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2007, 206
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of an LSTM-based NOMA Detector Over Time Selective Nakagami-m Fading Channel Conditions
Autorzy:
Shankar, Ravi
Bangare, Jyoti L.
Kumar, Ajay
Gupta, Sandeep
Mehraj, Haider
Kulkarni, Shriram S.
Powiązania:
https://bibliotekanauki.pl/articles/2142313.pdf
Data publikacji:
2022
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
deep learning
DL
multiple-input multiple-output
MIMO
non-orthogonal multiple access
NOMA
orthogonal multiple access
OMA
Opis:
This work examines the efficacy of deep learning (DL) based non-orthogonal multiple access (NOMA) receivers in vehicular communications (VC). Analytical formulations for the outage probability (OP), symbol error rate (SER), and ergodic sum rate for the researched vehicle networks are established Rusing i.i.d. Nakagami-m fading links. Standard receivers, such as least square (LS) and minimum mean square error (MMSE), are outperformed by the stacked long-short term memory (S-LSTM) based DL-NOMA receiver. Under real time propagation circumstances, including the cyclic prefix (CP) and clipping distortion, the simulation curves compare the performance of MMSE and LS receivers with that of the DL-NOMA receiver. According to numerical statistics, NOMA outperforms conventional orthogonal multiple access (OMA) by roughly 20% and has a high sum rate when considering i.i.d. fading links.
Źródło:
Journal of Telecommunications and Information Technology; 2022, 3; 17--24
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Closed Bootstrap Multiple Test Procedure
Wielokrotny bootstrapowy test domknięcia
Autorzy:
Domański, Czesław
Parys, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/905267.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
closed multiple tests
bootstrap technique
multiple comparisons
Opis:
In this paper we present how to apply the ideas of bootstrap and closed testing procedures on a multiple comparison test. We consider L samples of size n2, ..., n, from L distributions, with expected values uv u2, ..., uL, are to be compared. We consider the stepwise procedures introduced by Ho l m (1977). The test in each step is performed by means of the bootstrap technique. This procedures are always closed, but just the fact that a procedure is stepwise does not guarantee that it is closed. We discuss whether the appropriate conditions are met to make our bootstrap procedure closed. When the test is performed on very few observations the significance level is sometimes only approximately kept. However, since the approximation are due to the bootstrap, and not to the test procedure itself, the multiple test discussed in this paper is likely to keep the multiple level of significance.
W pracy zaprezentowano zastosowania idei bootstrapowej i domkniętych procedur testowych we wnioskowaniu dotyczącym porównań wielokrotnych. Rozważmy L prób o liczebnościach nlt n2, ..., nL, odpowiednio pochodzących z L populacji. Porównuje się wartości oczekiwane //,, /i2, ..., p.L. W procedurze kroczącej dla porównań wielokrotnych zaproponowana przez Holma (1977) zastosowano technikę bootstrapową. Procedura jest niezależna od rozkładów badanych populacji, liczby badanych hipotez, równej liczby prob. Jest procedurą domkniętą, przez co utrzymany jest wielokrotny poziom istotności a na poziomie z góry ustalonym.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2003, 164
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transmit Diversity in the Downlink for the TETRA-TEDS System
Autorzy:
Rutkowski, D. A.
Możdżonek, S.
Powiązania:
https://bibliotekanauki.pl/articles/308120.pdf
Data publikacji:
2014
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
multiple-input multiple-output (MIMO)
TETRA Enhanced Data System
Opis:
In the paper a proposal for the improvement of performance for the TETRA Enhanced Data System (TEDS) employing transmit diversity based on two antennas in the downlink is described. The key idea of the considerations relies on using the space-frequency coding algorithm. The proposal described required some relatively simple changes to the existing TEDS’s Single Input Single Output (SISO) interface but the original number of payload and signaling symbols in the normal downlink burst is preserved. The simulation results obtained indicate a significant improvement in performance. The Eb/No parameter could be reduced from 5 to 8 dB with respect to Frame Error Rate (FER), compared to a single antenna transmission for the same FER = 10−3.
Źródło:
Journal of Telecommunications and Information Technology; 2014, 1; 49-53
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonlinear multiple model particle filters algorithm for tracking multiple targets
Autorzy:
Sebbagh, A.
Tebbikh, H.
Powiązania:
https://bibliotekanauki.pl/articles/229441.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
estimation
particle filter
multiple targets tracking
multiple model approach
Opis:
The paper addresses multiple targets tracking problem encountered in number of situations in signal and image processing. In this paper, we present an efficient filtering algorithm to perform accurate estimation in jump Markov nonlinear systems, which we aim to contribute in solving the problem of multiple targets tracking using bearings-only measurements. The idea of this algorithm consists of the combination between the multiple model approach and particle filtering methods, which give a nonlinear multiple model particle filters algorithm. This algorithm is used to estimate the trajectories of multiple targets assumed to be nonlinear, from their noisy bearings.
Źródło:
Archives of Control Sciences; 2011, 21, 1; 37-60
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of Multiple Access Techniques Applicable for Maritime Satellite Communications
Autorzy:
Ilcev, S. D.
Powiązania:
https://bibliotekanauki.pl/articles/116635.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Maritime Distress and Safety System (GMDSS)
Maritime Mobile Satellite Communications (MMSC)
Multiple Access (MA)
Multiple Access Techniques
Code Division Multiple Access (CDMA)
Time Division Multiple Access (TDMA)
Frequency Division Multiple Access (FDMA)
Random (Packet) Division Multiple Access (RDMA)
Opis:
In this paper are introduced fundamentals, characteristics, advantages and disadvantages of Multiple Access (MA) employed as transmission techniques in the Maritime Mobile Satellite Communications (MMSC) between ships and Coast Earth Station (CES) via Geostationary Earth Orbit (GEO) or Not-GEO satellite constellations. In fixed satellite communication, as a rule, especially in MMSC many users are active at the same time. The problem of simultaneous communications between many single or multipoint mobile satellite users can be solved by using MA technique, such as Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), Space Division Multiple Access (SDMA) and Random (Packet) Division Multiple Access (RDMA). Since the resources of the systems such as the transmitting power and the bandwidth are limited, it is advisable to use the channels with complete charge and to create a different MA to the channel. This generates a problem of summation and separation of signals in the transmission and reception parts, respectively. Deciding this problem consists in the development of orthogonal channels of transmission in order to divide signals from various users unambiguously on the reception part.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 4; 529-540
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Availability of WDM Multi Ring Networks
Autorzy:
Rados, I.
Rados, K.
Powiązania:
https://bibliotekanauki.pl/articles/309294.pdf
Data publikacji:
2015
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
algebraic
availability
multiple
WDM
Opis:
This paper presents a new approach to modeling the availability of the networks composed of multiple interconnected rings in two nodes. For availability modeling method algebraic formulation is used. Using this method, through the availability of multiple ring networks consisting of two and three-rings connected to two nodes, a general expression for the availability between two terminals of multiple ring networks is derived. To perform the expression some real assumptions were taken and the analytical calculation showed that the use of these expressions under these assumptions provides real values for availability between the two terminals of multiple ring networks. Information on the availability of links and nodes is taken from previously published works.
Źródło:
Journal of Telecommunications and Information Technology; 2015, 1; 53-58
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficient (j,k)-domination
Autorzy:
Rubalcaba, Robert
Slater, Peter
Powiązania:
https://bibliotekanauki.pl/articles/743411.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
efficient domination
multiple domination
Opis:
A dominating set S of a graph G is called efficient if |N[v]∩ S| = 1 for every vertex v ∈ V(G). That is, a dominating set S is efficient if and only if every vertex is dominated exactly once. In this paper, we investigate efficient multiple domination. There are several types of multiple domination defined in the literature: k-tuple domination, {k}-domination, and k-domination. We investigate efficient versions of the first two as well as a new type of multiple domination.
Źródło:
Discussiones Mathematicae Graph Theory; 2007, 27, 3; 409-423
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The massive nodular cutaneous and soft tissues lesions of the right shoulder and the arm as the extramedullary manifestation of the advanced stage of multiple myeloma
Autorzy:
Drobiecki, Arkadiusz
Pasiarski, Marcin
Stelmach-Gołdyś, Agnieszka
Garus, Bartosz
Powiązania:
https://bibliotekanauki.pl/articles/773404.pdf
Data publikacji:
2017
Wydawca:
Medical Education
Tematy:
cutaneous involvement
multiple myeloma
Opis:
Cutaneous and soft tissue involvement is a very rare manifestation of multiple myeloma. We are describing a woman with the huge multiple plasma cells infiltrations of the soft tissues and the skin of the right shoulder and the arm that had occurred 2.5 years after the diagnosis of multiple myeloma. In the case of the described patient there is a distinct correlation between the appearance of the nodular lesions in soft tissues and the underlying osteolytic changes found in the skeleton. We assumed that the fracture of the right humerus in the past was the beginning of the plasma cells dissemination in the adherent tissues. The skin changes in our patient appeared in the advanced stage of multiple myeloma. There was only transient improvement of cutaneous changes after the chemotherapy, despite the complete remission of the underlying disease in the bone marrow. Despite of the intensive treatment (chemotherapy, radiotherapy) the patient died 7 months after the first appearance of the skin changes.
Źródło:
OncoReview; 2017, 7, 4; 180-183
2450-6125
Pojawia się w:
OncoReview
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examples of Objectified Multiple Criteria Ranking in the Selection of Infrastructural Projects
Autorzy:
Klimasara, E.
Wierzbicki, A. P.
Powiązania:
https://bibliotekanauki.pl/articles/308171.pdf
Data publikacji:
2018
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
multiple criteria ranking
objectified multiple criteria ranking
objectified ranking method
subjective ranking
Opis:
The paper addresses the issue of multiple criteria rankings of infrastructural projects (buildings, roads, etc.). Although the amount of literature devoted to this subject is considerable, all methods proposed produce subjective rankings, dependent on a direct or indirect definition of weighting coefficients applicable to subsequent evaluation criteria. Infrastructural projects are usually selected and approved collegially, however, by a group of decision makers with preferences that may potentially differ significantly. Therefore, an objectified ranking, independent from subjectively defined weighting coefficients, is needed for infrastructural projects. Such a ranking is proposed, analyzed and applied by the authors of this paper. This ranking depends originally only on the multiple objective evaluation data, i.e. the values of evaluation criteria related to decision scenarios or alternatives. Such an approach does not render a fully objective ranking, since one of this kind does not exist at all. Even the choice of the ranking method is a subjective decision, but it is objectified to the extent possible. The paper presents several examples of multiple criteria evaluation of infrastructural projects, derived from literature, and compares subjective rankings published in literature with objectified rankings that are independent of weighting coefficients.
Źródło:
Journal of Telecommunications and Information Technology; 2018, 4; 18-25
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pathogenesis of selected multiple primary neoplasms
Autorzy:
Witek, Marcin Kazimierz
Skrzynecka, Sabina
Bartoszek, Mateusz
Michalik, Julia
Pudźwa, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/29519506.pdf
Data publikacji:
2023-09-30
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
pathogenesis
multiple primary neoplasms
multiple primary tumors
oncogenetics
personalized medicine
tumor biology
Opis:
Introduction and aim. Multiple primary tumors are defined as having more than one primary tumor in a different organ location in the same person. Therefore, it is important to know pathogenesis of multiple primary neoplasms to discover new forms of primary prevention and secondary prevention, especially connected with genetic tests which are important for the future of medicine as a part of personalized medicine. The aim of the study is to present selected aspects of the pathogenesis of multiple primary neoplasms. Material and methods. PubMed databases and Google Scholar were searched. Analysis of the literature. The rising risk of developing multiple primary cancers is a consequence of the progressive growth and ageing of the population and development of cancer in patients previously treated for cancer. The formation of secondary neoplasms may be multifactorial – to a large extent it is associated with genetic factors that may facilitate neoplastic transformation, for example as a result of radiation therapy, chemotherapy, inherited syndromes, environmental factors such as tobacco or alcohol, sometimes random somatic mutations. Conclusion. Knowledge of the pathogenesis of multiple primary tumors can contribute to a better understanding of the problem, as well as help in the prevention or early diagnosis of multiple primary tumors (primary and secondary prevention)
Źródło:
European Journal of Clinical and Experimental Medicine; 2023, 3; 605-616
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bibliometric analysis of multiple criteria decision making in agriculture
Autorzy:
Francik, S.
Pedrycz, N.
Knapczyk, A.
Wójcik, A.
Francik, R.
Łapczyńska-Kordon, B.
Powiązania:
https://bibliotekanauki.pl/articles/298286.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
Multiple Criteria Decision Making
Multiple Criteria Decision Analysis
bibliometric analysis
research trends
agriculture
Opis:
Development trends (Research Trends) in scientific research on the methods of Multiple Criteria Decision Making (MCDM) and Multiple Criteria Decision Analysis (MCDA) in agriculture are analyzed. Established bibliometric techniques are applied. MCDA/MCDM methods are being very intensively developed in recent years, as evidenced by the number of scientific papers published annually in renowned scientific journals indexed in the Web of Science (WoS) database. In the years 1979-2015 a total of 1,355 scientific articles were collected in the database. The number of articles published annually increased rapidly after 2005. Besides, the annual number of citations of the publications is increasing. Research on MCDA/MCDM is conducted in many research areas. In the years 1984-2015 the Web of Science database accumulated 27 scientific publications on MCDA/MCDM in agriculture area. Therefore, it can be concluded that the MCDA/MCDM issues are currently not sufficiently analyzed in relation to agriculture. In the future this subject will probably be further developed, an increasing number of scientists will conduct research on the MCDA/MCDM and the annual number of articles published in the field will increase.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2017, 20(1); 17-30
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiple myeloma – cancer among elderly people
Autorzy:
Januszewska, Joanna
Świderska-Kołacz, Grażyna
Zmorzyński, Szymon
Powiązania:
https://bibliotekanauki.pl/articles/472516.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
multiple myeloma
etiology of multiple myeloma
epidemiology
prognostic factors
genetic mutations
chromosomal abberration
Źródło:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Biologiae Pertinentia; 2016, VI; 52-61
2083-7267
2450-3487
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Biologiae Pertinentia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Controlling the effect of multiple testing in Big Data
Autorzy:
Denkowska, Sabina
Powiązania:
https://bibliotekanauki.pl/articles/585035.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
multiple testing
FDR
Big Data
Opis:
Big Data poses a new challenge to statistical data analysis. An enormous growth of available data and their multidimensionality challenge the usefulness of classical methods of analysis. One of the most important stages in Big Data analysis is the verification of hypotheses and conclusions. With the growth of the number of hypotheses, each of which is tested at significance level, the risk of erroneous rejections of true null hypotheses increases. Big Data analysts often deal with sets consisting of thousands, or even hundreds of thousands of inferences. FWER-controlling procedures recommended by Tukey [1953], are effective only for small families of inferences. In cases of numerous families of inferences in Big Data analyses it is better to control FDR, that is the expected value of the fraction of erroneous rejections out of all rejections. The paper presents marginal procedures of multiple testing which allow for controlling FDR as well as their interesting alternative, that is the joint procedure of multiple testing MTP based on resampling [Dudoit, van der Laan 2008]. A wide range of applications, the possibility of choosing the Type I error rate and easily accessible software (MTP procedure is implemented in R multtest package) are their obvious advantages. Unfortunately, the results of the analysis of the MTP procedure obtained by Werft and Benner [2009] revealed problems with controlling FDR in the case of numerous sets of hypotheses and small samples. The paper presents a simulation experiment conducted to investigate potential restrictions of MTP procedure in case of large numbers of inferences and large sample sizes, which is typical of Big Data analyses. The experiment revealed that, regardless of the sample size, problems with controlling FDR occur when multiple testing procedures based on minima of unadjusted p-values ( ) are applied. Moreover, the experiment indicated the serious instability of the results of the MTP procedure (dependent on the number of bootstrap samplings) if multiple testing procedures based on minima of unadjusted p-values ( ) are used. The experiment described in the paper and the results obtained by Werft, Benner [2009] and Denkowska [2013] indicate the need for further research on MTP procedure.
Źródło:
Mathematical Economics; 2014, 10(17); 5-16
1733-9707
Pojawia się w:
Mathematical Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solving multi-objective production scheduling problems with Tabu Search
Autorzy:
Loukil, T.
Teghem, J.
Fortemps, P.
Powiązania:
https://bibliotekanauki.pl/articles/206202.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
multiple criteria
scheduling
tabu search
Opis:
Most of multiple criteria scheduling problems are NP-hard, so that exact procedures can only solve small problems and with two criteria. The complexity and the diversity of multiple criteria scheduling problems resulted in many alternative approaches to solve them. Exact and approximate procedures proposed in the literature are mainly dedicated to the problem to be solved and their performance depends on the problem data, on the criteria optimized, and are generally difficult to implement. We propose in this paper a Tabu Search approach to multiple criteria scheduling problems. The proposed procedure is a general flexible method, able to solve hard multiple criteria scheduling problems, easy to implement, and providing a set of potential efficient schedules. The criteria are any combination chosen from (C[sub max],T[sub max], L, N[sub T] and F).
Źródło:
Control and Cybernetics; 2000, 29, 3; 819-828
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 886

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies