The system presented in this paper is designed to manage medical services at the Center for Rehabilitation and Cosmetology operating at the University of Computer Science and Skills in Lodz. The Center provides rehabilitation services and medical cosmetology. The purpose of the system is to create and modify the schedule of services provided by the Centre, including the availability of the resources, the preferences provided by the patient and the conditions resulting from the specific nature of these services. The system consists of the following components: a repository of resources, the databases describing the current schedule, the language of description of the relationships between the resources, a query language, with the editor supporting the query creation, and the two applications, the first generates a sequence of services required by the patient and the second modifies the current schedule to take account of the requested services.
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Internet of Things solutions typically involve interaction between sensors, actuators, the cloud, embedded systems and user applications. Often in such cases, there are time constraints specifying the maximum response time to a request. This time depends on the calculation time and transmission time. Existing Internet communication solutions do not ensure the implementation of transmissions in a way that guarantees meeting the set time constraints. This paper proposes a new model of Internet communication dedicated to real-time Internet of Things systems, which includes a communication protocol, as well as a transmission scheduling and routing method. The protocol takes into account information about transmission time constraints, which is used for packet scheduling by routers, allowing to increase quality of service. In addition, the proposed static routing mechanism makes it possible to parallelize transmissions if time constraints are still exceeded. Also presented are preliminary results of experiments showing to what extent the proposed methods allow improving the quality of service in real-time Internet of Things systems.
W referacie zdefiniowano odpowiednik sterowalności w krótkim czasie, naturalnie opisywany w przestrzenie konfiguracyjnej, na przestrzeni zadaniowej. Podano algebraiczną charakteryzację tego warunku i jego praktyczne implikacje. Szczególną uwagę zwrócono na konfiguracje osobliwe. Rozważania zilustrowano dwoma przykładami obliczeniowymi.
EN
In this paper the concept of a small time local controllability, well defined in a configuration space, has been transferred into the task-space via Jacobian of the output function. An algebraic characterization of this type of controllablity and its practical implications have been provided. A special attention has been paid to singular configurations. Also other definitions and concepts, known in the configurations space, have got their counterparts in the task-space. Theoretical considerations have been illustrated on two examples of mobile robots.
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W artykule omówiono algorytm szacowania czasu trwania przedsięwzięcia metodą PERT. Ze względu na fakt niepewności dotyczącej oceny czasów trwania poszczególnych zadań tworzących dane przedsięwzięcie, przyjęto do ich reprezentacji liczby rozmyte. Przedstawiono również wariant oceny czasów trwania zadań przez wielu ekspertów oraz możliwość uwzględnienia różnego zaufania do poszczególnych ekspertów. W celu wyrażenia niepewności co do stopnia zaufania do reprezentacji wykorzystano liczby rozmyte.
EN
An article discusses algorithm estimate to last a venture with method PERT basis of fuzzy evaluation time to last task. For the sake of uncertainty with regard to time to last particular task forming this venture, accepted to this representation fuzzy number. Present too, variant evaluation time to last tasks by a few expert, also possibility take into account difficult confidence to experts. For the purpose of expression of uncertainty with regard to confidence, to representation used fuzzy number.
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