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Tytuł:
Detection of Conspiracy Narratives Using the Information Marker Method. A Study in the Methodology and Philosophy of Information
Autorzy:
Szynkiewicz, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/29433369.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Conspiracy narratives
marker method-based detection of conspiracy narratives
CONSPIR Model
information ethics
Opis:
The article will present the main assumptions of the information marker method, which can be used for recognizing the characteristics of conspiracy theories conveyed in the content of informational messages – texts, statements, recordings, etc. The proposed method draws on the conspiracy thinking model CONSPIR (Lewandowsky & Cook 2020) and has a practical component. However, the technique presented in the paper constitutes a modification and addition to the original proposal. First, it deals with a problem frame that is different from that of CONSPIR, since it is applied to formulated information messages. Hence the marker method is not an instrument for analyzing cognitive attitudes or patterns of conspiracy thinking. Secondly, the proposed tool is profiled in terms of content focused on scientific issues (mainly pertaining to the natural and applied sciences). Third, given the characteristics and structure of the communication under consideration, I replace the widely used term “conspiracy theory” with the more universal concept of “conspiracy narrative,” which seems to reflect more adequately the specific features of such information messages. Fourth, given the more specific purpose of the marker method compared to that of the CONSPIR model, I will try (where possible) to refrain from citing specific examples of conspiracy narratives, referring to singular events and personal examples. Consequently, to use a phrase widely used in methodology, the presented technique can be applied to all cases of a given type.
Źródło:
Ethics in Progress; 2023, 14, 2; 77-89
2084-9257
Pojawia się w:
Ethics in Progress
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The corridor method: a dynamic programming inspired metaheuristic
Autorzy:
Sniedovich, M.
Viß, S.
Powiązania:
https://bibliotekanauki.pl/articles/970877.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
programowanie dynamiczne
metaheuristics
dynamic programming
curse of dimensionality
very large neighborhoods
corridor method
global optimization
move-based
method-based
traveling salesman problem
Opis:
This paper presents a dynamic programming inspired metaheuristic called Corridor Method. It can be classified as a method-based iterated local search in that it deploys method-based neighborhoods. By this we mean that the search for a new candidate solution is carried out by a fully-fledged optimization method and generates a global optimal solution over the neighborhood. The neighborhoods are thus constructed to be suitable domains for the fully-fledged optimization method used. Typically, these neighborhoods are obtained by the imposition of exogenous constraints on the decision space of the target problem and therefore must be compatible with the optimization method used to search these neighborhoods. This is in sharp contrast to traditional metaheuristics where neighborhoods are move-based, that is, they are generated by subjecting the candidate solution to small changes called moves. While conceptually this method-based paradigm applies to any optimization method, in practice it is best suited to support optimization methods such as dynamic programming, where it is easy to control the size of a problem, hence the complexity of algorithms, by means of exogenous constraints. The essential features of the Corridor Method are illustrated by a number of examples, including the traveling salesman problem, where exponentially large neighborhoods are searched by a linear time/space dynamic programming algorithm.
Źródło:
Control and Cybernetics; 2006, 35, 3; 551-578
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An approach to improveselected risk assessment methods in seaports
Autorzy:
Guze, Sambor
Powiązania:
https://bibliotekanauki.pl/articles/2068698.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
risk assessment
AHP
scenario-based method
improving
Opis:
The scope of the paper is to introduce the solution for improving the risk management methods for seaports. First, the paper presents general information about ports and their main business scope. Next, we introduce the definition of critical infrastructure (CI) according to the EU directive, and we apply it to seaports. The paper also presents the basic concepts of dependencies and interdependencies and introduces a general classification of natural hazards and threats of influencing ports. Moreover, the multiple criteria decision analysis, particularly the application of the AHP method, is presented as the solution for improving seaports risk assessment based on scenarios. Finally, some examples of different approaches for risk assessment improving are presented.
Źródło:
Journal of Polish Safety and Reliability Association; 2019, 10, 1; 71--78
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Post-method Pedagogy in Moroccan EFL Classrooms: Public High Schools in Meknes City as a Case
Autorzy:
Aymane, Sbai, Mohamed
Powiązania:
https://bibliotekanauki.pl/articles/890519.pdf
Data publikacji:
2019-07-12
Wydawca:
Akademia Pedagogiki Specjalnej im. Marii Grzegorzewskiej. Wydawnictwo APS
Tematy:
Post-method Pedagogy
Method-based pedagogy
Action Research
Teacher Education
Eclecticism
Critical Pedagogy
Teacher’s Development
Reflective Teaching
Opis:
The ultimate goal of this paper is to investigate the pedagogical views and attitudes of Moroccan high school teachers towards Method-based pedagogy. It attempts to investigate the extent to which teachers are satisfied with and committed to conventional methods. Also, the paper aims at investigating the alternative practices teachers are more likely to resort to in order to compensate for the limitations of conventional methods. In addition to this, a further objective of this study is to investigate the extent to which pre-service teacher training programs in Morocco are aware of the challenges of the post-method era. This is measured through their awareness of the requirements of the post-method era and the extent to which teacher trainers concern themselves with equipping the prospective teachers with the necessary skills to be reflective researchers and responsibly eclectic teachers. In this respect, the data collection instruments opted for in the present study ranged from quantitative to qualitative in nature. The findings reveal that the vast majority of Moroccan high school teachers (P=78%) are dissatisfied with conventional methods and - (P=96%) of them- are not committed to one or two teaching methods. The vast majority report that they resort to an eclectic approach to language teaching due to the impracticality and inflexibility of the established methods. Most teachers (P=80%) admit that they use a random eclecticism as they rely mainly on their intuitive rather than principled judgments. In this regard, interviews with teacher trainers and supervisors also reveal that pre-service teacher training programs in Morocco limit themselves only to training the prospective teachers to use methods and approaches without training them to be responsibly eclectic. The findings also show that the majority of teachers do, to some extent, know about classroom research; however, they - (P=72%) of them- have never conducted it inside their classrooms. The teachers (P=57%) attribute this to the lack of financial support and to the fact that they are not well-trained to conduct research inside their classrooms. Finally, the results of this study imply many suggestions of which we mention: the introduction of a post-method pedagogy in the Moroccan pre-service teacher training programs, equipping teachers with the methodological tools necessary as well as supporting them financially to conduct classroom-research for the purpose of constructing teaching methodologies that suit the needs to the very specific students and contexts within which they work.
Źródło:
International Journal of Pedagogy, Innovation and New Technologies; 2019, 6(1); 71-93
2392-0092
Pojawia się w:
International Journal of Pedagogy, Innovation and New Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat transfer in compact cross-flow mini heat exchanger
Autorzy:
Prończuk, Mateusz
Pabiś, Aleksander
Powiązania:
https://bibliotekanauki.pl/articles/27315660.pdf
Data publikacji:
2023
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
heat transfer
cross-flow
mini heat exchanger
optimization based method
Opis:
This paper presents the results of an analysis of heat transfer in a cross-flow mini heat exchanger (CFMHE). The purpose of the paper was to analyze the results of the experimental measurements presented in the previous work in order to determine dimensionless correlations that allow for the calculation of heat transfer coefficients for the CFMHE. Analyzed CFMHE consisted of a brass cylindrical core, in which 2 mm circular holes were drilled. A method based on an optimization procedure was used to determine the correlations describing the heat transfer coefficients, allowing the correlations to be determined without the need of measuring the mini channel wall temperature. Overall heat transfer coefficients calculated using the proposed correlations typically did not deviate by more than ±10% from the corresponding experimental results, which was a significant improvement in the quality of the fit compared to the results presented in previous work.
Źródło:
Polish Journal of Chemical Technology; 2023, 25, 3; 79--88
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A two-step fall detection algorithm combining threshold-based method and convolutional neural network
Autorzy:
Xu, Tao
Se, Haifeng
Liu, Jiahui
Powiązania:
https://bibliotekanauki.pl/articles/1848958.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wearable
fall detection
MPU6050
threshold-based method
convolutional neural network
Opis:
Falls are one of the leading causes of disability and premature death among the elderly. Technical solutions designed to automatically detect a fall event may mitigate fall-related health consequences by immediate medical assistance. This paper presents a wearable device called TTXFD based on MPU6050 which can collect triaxial acceleration signals. We have also designed a two-step fall detection algorithm that fuses threshold-based method (TBM) and machine learning (ML). The TTXFD exploits the TBM stage with low computational complexity to pick out and transmit suspected fall data (triaxial acceleration data). The ML stage of the two-step algorithm is implemented on a server which encodes the data into an image and exploits a fall detection algorithm based on convolutional neural network to identify a fall on the basis of the image. The experimental results show that the proposed algorithm achieves high sensitivity (97.83%), specificity (96.64%) and accuracy (97.02%) on the open dataset. In conclusion, this paper proposes a reliable solution for fall detection, which combines the advantages of threshold-based method and machine learning technology to reduce power consumption and improve classification ability.
Źródło:
Metrology and Measurement Systems; 2021, 28, 1; 23-40
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Schlüsselwörter in Grundgesetzen. Ein korpusbasierter Vergleich am Beispiel der Verfassung der Republik Polen und des Grundgesetzes für die Bundesrepublik Deutschland
Keywords in Basic Laws. A corpus-based comparison using the example of the Constitution of the Republic of Poland and the Basic Law for the Federal Republic of Germany
Autorzy:
Cirko, Lesław
Powiązania:
https://bibliotekanauki.pl/articles/28409189.pdf
Data publikacji:
2022-12-28
Wydawca:
Oficyna Wydawnicza ATUT – Wrocławskie Wydawnictwo Oświatowe
Tematy:
Constitutions
keywords
similarities
hierarchy of content
limitations of the corpus-based method
Opis:
In the article, a hierarchy of values set in keywords is presented using the example of the Constitution of the Republic of Poland and the Basic Law for the Federal Republic of Germany. The second objective is the practical verification of the research method using text word frequencies (tokens) and the so-called TTR (Type-Token-Ratio). Keywords are understood in their colloquial sense as conspicuous carriers of certain contents against the background of the text as a whole. Constitutions have a broad identity of function and form, contain a similar message, are similarly located in the legal order as a legal act of the highest rank, are characterised by a similar content structure and exhibit a high stylistic level in the field of legal language. It is thus investigated whether the aforementioned similarities also apply to the hierarchy of content implied in keywords. The investigation confirmed that differences in the form of government (Germany as a federal state, Poland as a unitary state) do not lead to clear differences at the level of keywords. However, the analysis revealed some limitations in the application of the corpus-based method.
Źródło:
Beiträge zur allgemeinen und vergleichenden Sprachwissenschaft; 2022, 11; 33-46
2299-4122
2657-4799
Pojawia się w:
Beiträge zur allgemeinen und vergleichenden Sprachwissenschaft
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Traditional teaching method versus simulation-based teaching method in the prevention of medication errors among nursing students
Autorzy:
Ramamurthy, Rohini
Chitra, Felicia
Kavitha
Powiązania:
https://bibliotekanauki.pl/articles/38695719.pdf
Data publikacji:
2024-03-30
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
nursing students
prevention of medication error
simulation-based teaching method
traditional teaching method
Opis:
Introduction and aim. The effective and safe administration of medication is the responsibility of every health care provider involved in patient care. One of the biggest problems with nursing education is the gap between theory and practice, which pave ways for medication errors to occur at any level of the medication administration process. This can be rectified by using an efficient teaching strategy that harmoniously blends nursing theory and practical skills. The aim of the study was to evaluate the effectiveness of the traditional teaching method versus simulation-based teaching method on level of knowledge, attitude, and practice on prevention of medication errors among nursing students in selected colleges, Puducherry. Material and methods. The research approach and design used for the study were quantitative approach and quasi-experimental pre and post-test control group design respectively. The study settings were selected 4 nursing colleges in Puducherry. The sample size was 100 (50 in experimental group I and 50 in experimental group II) which was selected by using simple random and stratified sampling technique. pre-test was done to assess the level of knowledge, attitude and practice on prevention of medication error for both experimental groups utilizing the self-administered knowledge, attitude questionnaire and checklist. The experimental group I received traditional teaching method and experimental group II received simulation-based teaching method. Post-test was done after one week using the same tool. Results. The study results revealed that out of 100 nursing students, majority 35 (70%) and 38 (76%) of the nursing students were in the age group of 20–21 years, 40 (80%) and 39 (78%) of them were female, 50 (100%) and 41 (82%) of them were staying as day scholars, 40 (80%) and 41 (82%) had one attempt to clear the pharmacology subject in the experimental group I and II respectively. The level of knowledge, attitude, practice showed a statistically significance difference at p<0.05 between the pre and post-test within the experimental group I and II respectively. The effective mean scores of knowledge, attitude and practice showed a statistically significance difference at p<0.05 between the experimental group I and II respectively, revealed that the simulation-based teaching method was more effective over the traditional teaching method. There was a significant positive correlation at p<0.05 exist between the level of knowledge and attitude, knowledge and practice in the experimental group I. The association between the post-test level of attitude and the gender variable showed a statistically significant at p<0.05 in the experimental group II. Conclusion. The study concluded that the simulation-based teaching method was effective which can be utilized as a means to educate the nursing students during their academic performance.
Źródło:
European Journal of Clinical and Experimental Medicine; 2024, 22, 1; 17-29
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ensemble-based Method of Fraud Detection at Self-checkouts in Retail
Autorzy:
Vitynskyi, P.
Tkachenko, R.
Izonin, I.
Powiązania:
https://bibliotekanauki.pl/articles/410756.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
classification
Ensemble-based method
Random Forest
fraud detection
retail
Ito decomposition
imbalanced dataset
Opis:
The authors consider the problem of fraud detection at self-checkouts in retail in condition of unbalanced data set. A new ensemble-based method is proposed for its effective solution. The developed method involves two main steps: application of the preprocessing procedures and the Random Forest algorithm. The step-by-step implementation of the preprocessing stage involves the sequential execution of such procedures over the input data: scaling by maximal element in a column with row-wise scaling by Euclidean norm, weighting by correlation and applying polynomial extension. For polynomial extension Ito decomposition of the second degree is used. The simulation of the method was carried out on real data. Evaluating performance was based on the use of cost matrix. The experimental comparison of the effectiveness of the developed ensemble-based method with a number of existing (simples and ensembles) demonstrates the best performance of the developed method. Experimental studies of changing the parameters of the Random Forest both for the basic algorithm and for the developed method demonstrate a significant improvement of the investigated efficiency measures of the latter. It is the result of all steps of the preprocessing stage of the developed method use.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2019, 8, 2; 3-8
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metoda projektowania systemów smart cities bazowana na case based reasoning
Smart cities system design method based on case based reasoning
Autorzy:
Orłowski, Cezary
Sitek, Tomasz
Ziółkowski, Artur
Kapłański, Paweł
Orłowski, Aleksander
Pokrzywnicki, Witold
Powiązania:
https://bibliotekanauki.pl/articles/1827561.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska
Tematy:
Smart Cities
Case Based Reasoning Method
decision support systems
knowledge management
Opis:
The objective of this paper is to present the results of research carried out to develop a design method for Smart Cities systems. The method is based on the analysis of design cases of Smart Cities systems in cities, the selection of the city appropriate to the requirements for implementation and application. The Case Based Reasoning method was used to develop the proposed design methodology, along with mechanisms of the conversion of project processes and roles to Rational Unified Processes (RUP). The prerequisite for the proposed method is that the enterprise manager must be knowledgeable about high-level Smart Cities system architecture and the design framework applied. The authors, being themselves knowledgeable about architecture of this kind and about project environments which implement KPI models, propose a generic solution applicable to any environments and system architectures.
Celem artykułu jest prezentacja wyników badań nad opracowaniem metody projektowania systemów Smart Cities. Metoda ta bazuje na analizie przypadków projektowania systemów Smart Cities w miastach, wyborze spełniającego wymagania zdecydowanego na wdrożenie ośrodka i zastosowaniu. Do budowy proponowanej metody projektowania wykorzystano Case Based Reasoning oraz mechanizmy konwersji procesów i ról projektowych do procesów zunifikowanych RUP. Warunkiem stosowania proponowanej metody jest wiedza kierującego przedsięwzięciem o wysokopoziomowej architekturze systemu Smart Cities oraz stosowanych ramach projektowych. Autorzy posiadając wiedzę o takiej architekturze, a także o środowiskach projektowych implementujących modele KPI, proponują rozwiązanie generyczne, które mogą być wykorzystywane dla dowolnych środowisk i architektur systemów.
Źródło:
Przedsiębiorstwo we współczesnej gospodarce - teoria i praktyka; 2015, 2-3, 13; 41-61
2084-6495
Pojawia się w:
Przedsiębiorstwo we współczesnej gospodarce - teoria i praktyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An energy-based method in phenomenological description of mechanical properties of nonlinear materials under plane stress
Autorzy:
Wegner, T.
Kurpisz, D.
Powiązania:
https://bibliotekanauki.pl/articles/279443.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
energy-based method
nonlinear material
phenomenological description
strain energy density function
Sylvester’s theorem
Opis:
A method based on energy is a very useful tool for description of mechanical properties of materials. In the current paper, on the base of geometrical interpretation of a deformation process, the strain energy density function for isotropic nonlinear materials has been constructed. On account of hydrostatic interpretation of the volumetric deformation, the elastic part of energy has been extracted. The initiation of the damage process due to plastic flow of the material under plane stress has been determined and the stability conditions have been formulated by using in the stability analysis the strain energy density function in addition to Sylvester’s theorem and assumption of zero volume change during pure plastic deformations. This concept is an original part of the work and continuation of the investigations previously carried out by Wegner and Kurpisz. The theoretical investigations have been illustrated on the example of aluminium.
Źródło:
Journal of Theoretical and Applied Mechanics; 2017, 55, 1; 129-139
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CT/SPECT image fusion in patients treated with iodine-131
Autorzy:
Psiuk-Maksymowicz, K.
Borys, D.
Gorczewski, K.
Steinhof, K.
d'Amico, A.
Powiązania:
https://bibliotekanauki.pl/articles/333051.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
połączenie obrazu
emisyjna tomografia komputerowa pojedynczego fotonu
image fusion
SPECT-CT overlay
point-based method
Opis:
Computer tomography gives visualization of anatomical structures and abnormalities, but it lacks of functional information. On the other hand, single photon emission tomography provides the missing information about the tumour function, but it has relative low resolution and the localization of the visible focus may be difficult, especially when iodine ¹³¹I is used. Thus, several methods of image fusion are applied. We present an algorithm of image fusion based on affine transformation. On the base of a phantom study, we showed that the created program can be a useful tool to fuse CT and SPECT images and then applied to patients' datasets. External marker method was used to align patient functional and anatomical data. Image alignment quality depends on appropriate marker placement and acquisition protocol. The program estimates maximal misalignment in a volume between the markers. Created acquisition protocol minimizes misalignment of patient placement on both CT and gamma camera, however misalignment derived from respiratory movements cannot be avoided. The proposed technique is simple, low-cost and can be easily adopted in any hospital or diagnostic centre equipped with gamma camera and CT. Fusion of morphology and function can improve diagnostic accuracy in many clinical circumstances.
Źródło:
Journal of Medical Informatics & Technologies; 2004, 8; II7-12
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Supporting Analogy-based Effort Estimation with the Use of Ontologies
Autorzy:
Kowalska, J.
Ochodek, M.
Powiązania:
https://bibliotekanauki.pl/articles/384110.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
ontology
data is modeled using Semantic Web
method of supervised case-based reasoning
Opis:
The paper concerns effort estimation of software development projects, in particular, at the level of product delivery stages. It proposes a new approach to model project data to support expert-supervised analogy-based effort estimation. The data is modeled using Semantic Web technologies, such as Resource Description Framework (RDF) and Ontology Language for the Web (OWL). Moreover, in the paper, we define a method of supervised case-based reasoning. The method enables to search for similar projects’ tasks at different levels of abstraction. For instance, instead of searching for a task performed by a specific person, one could look for tasks performed by people with similar capabilities. The proposed method relies on ontology that defines the core concepts and relationships. However, it is possible to introduce new classes and relationships, without the need of altering the search mechanisms. Finally, we implemented a prototype tool that was used to preliminary validate the proposed approach. We observed that the proposed approach could potentially help experts in estimating non-trivial tasks that are often underestimated.
Źródło:
e-Informatica Software Engineering Journal; 2014, 8, 1; 53-64
1897-7979
Pojawia się w:
e-Informatica Software Engineering Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
State Space-Based Method for the DOA Estimation by the Forward-Backward Data Matrix Using Small Snapshots
Autorzy:
Liu, J.
Powiązania:
https://bibliotekanauki.pl/articles/227085.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
state space-based method
DOA estimation
small snapshots
array signal
antenna elements
forward-backward data Matrix
Opis:
In this presentation, a new low computational burden method for the direction of arrival (DOA) estimation from noisy signal using small snapshots is presented. The approach introduces State Space-based Method (SSM) to represent the received array signal, and uses small snapshots directly to form the Hankel data matrix. Those Hankel data matrices are then utilized to construct forward-backward data matrix that is used to estimate the state space model parameters from which the DOA of the incident signals can be extracted. In contrast to existing methods, such as MUSIC, Root-MUSIC that use the covariance data matrix to estimate the DOA and the sparse representation (SR) based DOA which is obtained by solving the sparsest representation of the snapshots, the SSM algorithm employs forward-backward data matrix formed only using small snapshots and doesn't need additional spatial smoothing method to process coherent signals. Three numerical experiments are employed to compare the performance among the SSM, Root-MUSIC and SR-based method as well as Cramér–Rao bound (CRB). The simulation results demonstrate that when a small number of snapshots, even a single one, are used, the SSM always performs better than the other two method no matter under the circumstance of uncorrelated or correlated signal. The simulation results also show that the computational burden is reduced significantly and the number of antenna elements is saved greatly.
Źródło:
International Journal of Electronics and Telecommunications; 2017, 63, 3; 315-322
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On application of some artificial intelligence methods in ship design
Autorzy:
Meler-Kapcia, M.
Zieliński, S.
Kowalski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/259171.pdf
Data publikacji:
2005
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
artificial intelligence
expert system
neural networks
relational database
case-based reasoning method
aided ship design
Opis:
In the paper were presented examples of use of some intelligence tools such as a neural network, expert system and relational database to ship design. The neural network of back-propagation of errors was applied to select required power of ship main propulsion system on the basis of ship main parameters. Results obtained by using the network were compared with resulting values for similar ships found in Access database application. To aid design of the main propulsion system and ship power plant automation fuzzy logic was applied as an element of Case Based Reasoning (CBR) method in Exsys expert system as well as a few methods for selection of similar ships, elaborated by the authors.
Źródło:
Polish Maritime Research; 2005, 1; 14-20
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
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