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    Wyświetlanie 1-12 z 12
    Tytuł:
    Methods for assessment and testing students’ learning outcomes in cooperative teaching
    Metody oceniania i testowania efektów kształcenia studentów w nauczaniu we współpracy
    Autorzy:
    Nguyen, Thi Thanh
    Powiązania:
    https://bibliotekanauki.pl/articles/551311.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    assessment and testing methods
    cooperative teaching
    method of implementation
    cooperative behaviors
    cooperative learning skills
    metody oceniania i testowania
    nauczanie kooperatywne
    metody realizacji
    zachowania kooperatywne
    umiejętności kooperatywnego uczenia się
    Opis:
    This article presents some methods for assessing and testing student learning outcomes in cooperative teaching in order to help lecturers to assess objectively as well as to clearly present the results achieved by various groups and individuals. Understanding the basics of assessment can have a positive impact on every student. It is essential to adjust the methods of assessment to teaching and create incentives that will increase students’ interest in learning
    Artykuł prezentuje kilka metod oceniania i testowania efektów kształcenia studentów w ramach nauczania opierającego się na współpracy w grupie. Przykłady metod zaprezentowanych w tekście mogą pomoc wykładowcom w obiektywnym ocenianiu, a także w jasnym prezentowaniu efektów osiąganych przez poszczególne grupy i osoby. Wyjaśnienie podstaw oceniania może wpłynąć pozytywnie na każdego studenta. Podstawą jest dostosowanie metod oceniania do nauczania, a także tworzenie zachęt, które zwiększą zainteresowanie studentów uczeniem się.
    Źródło:
    Relacje. Studia z nauk społecznych; 2016, 2; 209-215
    2543-5124
    Pojawia się w:
    Relacje. Studia z nauk społecznych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cooperative adaptive driving for platooning autonomous self driving based on edge computing
    Autorzy:
    Chang, Ben-Jye
    Hwang, Ren-Hung
    Tsai, Yueh-Lin
    Yu, Bo-Han
    Liang, Ying-Hsin
    Powiązania:
    https://bibliotekanauki.pl/articles/330778.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    mobile edge computing
    active safe driving
    cooperative platoon driving
    cooperative adaptive cruise control
    przetwarzanie mobilne
    bezpieczna jazda
    tempomat adaptacyjny
    Opis:
    Cooperative adaptive cruise control (CACC) for human and autonomous self-driving aims to achieve active safe driving that avoids vehicle accidents or traffic jam by exchanging the road traffic information (e.g., traffic flow, traffic density, velocity variation, etc.) among neighbor vehicles. However, in CACC, the butterfly effect is encountered while exhibiting asynchronous brakes that easily lead to backward shock-waves and are difficult to remove. Several critical issues should be addressed in CACC, including (i) difficulties with adaptive steering of the inter-vehicle distances among neighbor vehicles and the vehicle speed, (ii) the butterfly effect, (iii) unstable vehicle traffic flow, etc. To address the above issues in CACC, this paper proposes the mobile edge computing-based vehicular cloud of the cooperative adaptive driving (CAD) approach to avoid shock-waves efficiently in platoon driving. Numerical results demonstrate that the CAD approach outperforms the compared techniques in the number of shock-waves, average vehicle velocity, average travel time and time to collision (TTC). Additionally, the adaptive platoon length is determined according to the traffic information gathered from the global and local clouds.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2019, 29, 2; 213-225
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A generalization of the graph Laplacian with application to a distributed consensus algorithm
    Autorzy:
    Zhai, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/331278.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    graph Laplacian
    generalized graph Laplacian
    adjacency weights
    distributed consensus algorithm
    cooperative control
    Opis:
    In order to describe the interconnection among agents with multi-dimensional states, we generalize the notion of a graph Laplacian by extending the adjacency weights (or weighted interconnection coefficients) from scalars to matrices. More precisely, we use positive definite matrices to denote full multi-dimensional interconnections, while using nonnegative definite matrices to denote partial multi-dimensional interconnections. We prove that the generalized graph Laplacian inherits the spectral properties of the graph Laplacian. As an application, we use the generalized graph Laplacian to establish a distributed consensus algorithm for agents described by multi-dimensional integrators.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2015, 25, 2; 353-360
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cooperative driving at isolated intersections based on the optimal minimization of the maximum exit time
    Autorzy:
    Wu, J.
    Abbas-Turki, A.
    Perronnet, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/331216.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    cooperative driving
    wireless communication
    autonomous intersection management
    dynamic programming
    komunikacja bezprzewodowa
    zarządzanie autonomiczne
    programowanie dynamiczne
    Opis:
    Traditional traffic control systems based on traffic light have achieved a great success in reducing the average delay of vehicles or in improving the traffic capacity. The main idea of these systems is based on the optimization of the cycle time, the phase sequence, and the phase duration. The right-of-ways are assigned to vehicles of one or several movements for a specific time. With the emergence of cooperative driving, an innovative traffic control concept, Autonomous Intersection Management (AIM), has emerged. In the framework of AIM, the right-of-way is customized on the measurement of the vehicle state and the traffic control turns to determine the passing sequence of vehicles. Since each vehicle is considered individually, AIM faces a combinatorial optimization problem. This paper proposes a dynamic programming algorithm to find its optimal solution in polynomial time. Experimental results obtained by simulation show that the proper arrangement of the vehicle passing sequence can greatly improve traffic efficiency at intersections.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2013, 23, 4; 773-785
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modern approaches to modeling user requirements on resource and task allocation in hierarchical computational grids
    Autorzy:
    Kołodziej, J.
    Xhafa, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/907798.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    przetwarzanie siatkowe
    szeregowanie
    bezpieczeństwo
    computational grids
    scheduling
    non-cooperative games
    user behavior
    security
    meta-heuristics
    Opis:
    Tasks scheduling and resource allocation are among crucial issues in any large scale distributed system, including Computational Grids (CGs). These issues are commonly investigated using traditional computational models and resolution methods that yield near-optimal scheduling strategies. One drawback of such approaches is that they cannot effectively tackle the complex nature of CGs. On the one hand, such systems account for many administrative domains with their own access policies, user privileges, etc. On the other, CGs have hierarchical nature and therefore any computational model should be able to effectively express the hierarchical architecture in the optimization model. Recently, researchers have been investigating the use of game theory for modeling user requirements regarding task and resource allocation in grid scheduling problems. In this paper we present two general non-cooperative game approaches, namely, the symmetric non-zero sum game and the asymmetric Stackelberg game for modeling grid user behavior defined as user requirements. In our game-theoretic approaches we are able to cast new requirements arising in allocation problems, such as asymmetric users relations, security and reliability restrictions in CGs. For solving the games, we designed and implemented GA-based hybrid schedulers for approximating the equilibrium points for both games. The proposed hybrid resolution methods are experimentally evaluated through the grid simulator under heterogeneity, and large-scale and dynamics conditions. The relative performance of the schedulers is measured in terms of the makespan and flowtime metrics. The experimental analysis showed high efficiency of meta-heuristics in solving the game-based models, especially in the case of an additional cost of secure task scheduling to be paid by the users.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2011, 21, 2; 243-257
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Distributed model reference control for synchronization of a vehicle platoon with limited output information and subject to periodical intermittent information
    Autorzy:
    Prayitno, Agung
    Indrawati, Veronica
    Nilkhamhang, Itthisek
    Powiązania:
    https://bibliotekanauki.pl/articles/24200695.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    cooperative observer
    distributed model reference control
    intermittent information
    vehicle platoon
    obserwator współpracujący
    model rozproszony
    konwój pojazdów
    Opis:
    Vehicles involved in platoon formation may experience difficulties in obtaining full-state information that can be exchanged and used for controller synthesis. Therefore, a distributed controller based on a model reference and designed utilizing a cooperative observer is proposed for vehicle platoon synchronization. The proposed controller is composed of three main blocks, namely, the reference model, the cooperative observer and the main controller. The reference model is developed by using a homogeneous vehicle platoon that utilizes cooperative full-state information. The cooperative observer is a state estimator which is constructed based on the cooperative output estimation error. It provides state estimates to be used by the main controller. The main controller is constructed from a nominal control and a synchronization input. The nominal control has the main task of tracking the lead vehicle, while in order to reduce the synchronization error, the synchronization input is added by utilizing the cooperative disagreement error. Stability analysis is focused on the vehicle platoon when it is subjected to completely periodical intermittent information. The condition on the information rate is derived for guaranteeing the synchronization of the platoon. Numerical simulation of a vehicle platoon consisting of one leader and five followers is used to examine the performance of the controller.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2023, 33, 4; 537--551
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fusion Technology of Neural Networks and Fuzzy Systems: a Chronicled Progression from the Laboratory to Our Daily Lives
    Autorzy:
    Takagi, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/911142.pdf
    Data publikacji:
    2000
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    sieć neuronowa
    system rozmyty
    algorytmy
    cooperative models
    neural networks
    fuzzy systems
    genetic algorithms
    real world applications
    overview
    Opis:
    We chronicle the research on the fusion technology of neural networks and fuzzy systems (NN+FS), the models that have been proposed from this research, and the commercial products and industrial systems that have adopted these models. First, we review the NN+FS research activity during the early stages of their development in Japan, the US, and Europe. Next, following the classifi- cation of NN+FS models, we show the ease of fusing these technologies based on the similarities of the data flow network structures and the non-linearity realization strategies of NNs and FSs. Then, we describe several models and applications of NN+FS. Finally, we introduce some important and recently developed NN+FS patents.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2000, 10, 4; 647-673
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multilayered autoscaling performance evaluation: Can virtual machines and containers co-scale?
    Autorzy:
    Podolskiy, Vladimir
    Jindal, Anshul
    Gerndt, Michael
    Powiązania:
    https://bibliotekanauki.pl/articles/330648.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    cooperative scaling
    multilayered autoscaling
    autoscaling performance
    autoscaling evaluation
    ScaleX
    skalowanie kooperacyjne
    skalowanie automatyczne wielowarstwowe
    ocena skalowania automatycznego
    Opis:
    The wide adoption of cloud computing by businesses is due to several reasons, among which the elasticity of the cloud virtual infrastructure is the definite leader. Container technology allows increasing the flexibility of an application by adding another layer of virtualization. The containers can be dynamically created and terminated, and also moved from one host to another. A company can achieve a significant cost reduction and increase the manageability of its applications by allowing the running of containerized microservice applications in the cloud. Scaling for such solutions is conducted on both the virtual infrastructure layer and the container layer. Scaling on both layers needs to be synchronized so that, for example, the virtual machine is not terminated with containers still running on it. The synchronization between layers is enabled by multilayered cooperative scaling, implying that the autoscaling solution of the virtual infrastructure layers is aware of the decisions of the autoscaling solution on the container layer and vice versa. In this paper, we introduce the notion of cooperative multilayered scaling and the performance of multilayered autoscaling solutions evaluated using the approach implemented in ScaleX (previously known as Autoscaling Performance Measurement Tool, APMT). We provide the results of the experimental evaluation of multilayered autoscaling performance for the combination of virtual infrastructure autoscaling of AWS, Microsoft Azure and Google Compute Engine with pods horizontal autoscaling of Kubernetes by using ScaleX with four distinct load patterns. We also discuss the effect of the Docker container image size and its pulling policy on the scaling performance.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2019, 29, 2; 227-244
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Event-triggered cooperative control for high-order nonlinear multi-agent systems with finite-time consensus
    Autorzy:
    Gong, Shiyin
    Zheng, Meirong
    Hu, Jing
    Zhang, Anguo
    Powiązania:
    https://bibliotekanauki.pl/articles/24200691.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    multiagent system
    cooperative control
    event triggered control
    neuroadaptive control
    prescribed performance
    system wieloagentowy
    sterowanie wyzwalane zdarzeniami
    sterowanie neuroadaptacyjne
    Opis:
    An event-triggered adaptive control algorithm is proposed for cooperative tracking control of high-order nonlinear multiagent systems (MASs) with prescribed performance and full-state constraints. The algorithm combines dynamic surface technology and the backstepping recursive design method, with radial basis function neural networks (RBFNNs) used to approximate the unknown nonlinearity. The barrier Lyapunov function and finite-time stability theory are employed to prove that all agent states are semi-globally uniform and ultimately bounded, with the tracking error converging to a bounded neighborhood of zero in a finite time. Numerical simulations are provided to demonstrate the effectiveness of the proposed control scheme.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2023, 33, 3; 439--448
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Non-cooperative game approach to multi-robot planning
    Autorzy:
    Gałuszka, A.
    Świerniak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/908521.pdf
    Data publikacji:
    2005
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    zagadnienie projektowe
    robot wielofunkcyjny
    gra niekooperatywna
    planowanie kompleksowe
    planning problems
    multi-robot environment
    STRIPS language
    non-cooperative games
    planning complexity
    Opis:
    A multi-robot environment with a STRIPS representation is considered. Under some assumptions such problems can be modelled as a STRIPS language (for instance, a Block World environment) with one initial state and a disjunction of goal states. If the STRIPS planning problem is invertible, then it is possible to apply the machinery for planning in the presence of incomplete information to solve the inverted problem and then to find a solution to the original problem. In the paper a planning algorithm that solves the problem described above is proposed and its computational complexity is analyzed. To make the plan precise, non-cooperative strategies are used.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2005, 15, 3; 359-367
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The interval Shapley value of an M/M/1 service system
    Autorzy:
    E, C. G.
    Li, Q. L.
    Li, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/330815.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    M/M/1 service system
    cooperative interval game
    cost allocation
    Shapley value
    gra przedziałowa kooperatywna
    alokacja kosztów
    wartość Shapley'a
    Opis:
    Service systems and their cooperation are one of the most important and hot topics in management and information sciences. To design a reasonable allocation mechanism of service systems is the key issue in the cooperation of service systems. In this paper, we systematically introduce the interval Shapley value as cost allocation of cooperative interval games ,[...] arising from cooperation in a multi-server service system, and provide an explicit expression for the interval Shapley value of cooperative interval games [...]. We construct an interval game [...] of a service system which shares the same value for the grand coalition with the original interval game, by using the characteristic function which is dominated by the function of the original interval game. Finally, we prove that the interval game [...] is concave, which means that the interval Shapley value of the interval game [...] is in the interval core of this interval game, and illustrate this conclusion by using numerical examples.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2017, 27, 3; 549-562
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Neuro-adaptive cooperative control for high-order nonlinear multi-agent systems with uncertainties
    Autorzy:
    Peng, Cheng
    Zhang, Anguo
    Li, Junyu
    Powiązania:
    https://bibliotekanauki.pl/articles/2055174.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    multiagent system
    radial basis function
    RBF neural network
    sliding mode control
    cooperative control
    system wieloagentowy
    radialna funkcja bazowa
    sieć neuronowa RBF
    sterowanie ślizgowe
    Opis:
    The consensus problem for a class of high-order nonlinear multi-agent systems (MASs) with external disturbance and system uncertainty is studied. We design an online-update radial basis function (RBF) neural network based distributed adaptive control protocol, where the sliding model control method is also applied to eliminate the influence of the external disturbance and system uncertainty. System consensus is verified by using the Lyapunov stability theorem, and sufficient conditions for cooperative uniform ultimately boundedness (CUUB) are also derived. Two simulation examples demonstrate the effectiveness of the proposed method for both homogeneous and heterogeneous MASs.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2021, 31, 4; 635--645
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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