Wyniki wyszukiwania - BazTech

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Geometric approach to machine exploitation efficiency : modelling and assessment

Loska Andrzej, Paszkowski Waldemar

Eksploatacja i Niezawodność

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2022

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Vol. 24, no. 1

114--122

EN

This article presents a new approach to the exploitation assessment of machines and devices. A key aspect of this approach is the construction of the assessment model based on the geometric representation of measures associated with each other, which covers the full specifics of the exploitation process. This approach is successfully implemented by the Overall Equipment Effectiveness (OEE) model, which is fully susceptible to the geometric modelling process due to the three-way system of assessed exploitation aspects. The result of this approach is the vectored OEE model and its interpretation in terms of time series of changes in values of components. Methods of determining vector calculus measures were developed, including the second-order tensor and gradient. This is the subject of the variability of the reliability conditions of machines or production processes. It allows for the realisation of an exploitation assessment based on dynamic changes in the values of their components in the time domain. This is a significant difference to the classical static approach to such an assessment. The developed new geometric OEE model was confirmed by verification tests using the LabView software, based on two parallel data sets obtained with analytical and simulation methods using the FlexSim software.

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Koncepcja i opracowanie geoportalu AGH

Parkitny Ł, Lupa M., Materek K, Inglot A., Pałka P., Mazur K, Kozioł K., Chuchro M.

Roczniki Geomatyki

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2013

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T. 11, z. 3(60)

79--85

PL

W niniejszej pracy omówione zostaną szczegółowo etapy projektowania i implementacji „Geoportalu AGH”. Pierwsza część artykułu dotyczy idei, a także opisu prac przygotowawczych i projektowych Systemu. Następnie omówiony został proces pozyskiwania danych przestrzennych i opisowych, które były podstawą do utworzenia wektorowego modelu kampusu AGH. Szczególną uwagę poświęcono również bazie danych, przedstawiając jej strukturę i rozwiązania pozwalające na jej integrację z systemami przechowywania danych osobowych. W pracy przedstawiona została również metodyka tworzenia sieci dróg w przestrzeni trójwymiarowej, stanowiącej jedno z narzędzi udostępnianych w sieci, wraz z opisem działania na serwerze. Ponadto szczegółowo opisany został projekt aplikacji typu WebGIS, stanowiącej warstwę prezentacji Geoportalu, utworzony przy użyciu technologii ArcGIS API for Silverlight. Na koniec przedstawione zostaną plany dotyczące wdrożenia nowych funkcjonalności, o które ma zostać rozbudowany serwis.

EN

In this paper we present stages of design and implementation of Geoportal AGH for the AGH University of Science and Technology. First part of the paper relates to the idea of the project and description of the system design. Next, we discuss the process of acquiring spatial data and descriptive data, which provided the basis for creation of a vector model of AGH campus. Particular attention was also devoted to the database structure and solutions allowing its integration with personal data storage systems. The paper also presents methodology of creating a network of roads in three-dimensional space, which is one of the tools available in the internet together with the operation instructions. In addition, a design of WebGIS application is described, constituting a layer of Geoportal presentation, created with the use of ArcGIS API for Silverlight. Finally, we discuss future plans of implementation of new functionalities to extend our services.

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Modelowanie rzeczywistości geograficznej w systemach informacji przestrzennej

Eckes K.

Roczniki Geomatyki

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2006

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T. 4, z. 2

43-73

EN

In this paper, geographical reality is treated as topographical surface with natural objects and humancreated infrastructure. The natural objects and infrastructure occur on the earth surface and under it. So understood geographical reality is featured by a very big number of objects and large diversity of them. The projection of geographical reality in the 2-D form in order to create the map image needs the diversity to be reduced by means of object classification, object and details simplification and reduction of three-dimensional space to two-dimensional one. In order to record an image of the map in the spatial information system it should be adjusted to the logic of computer technology - and transformed to the linear form (1-D). In this paper two different ways of transformation of the map image to spatial information system (two ways of data modeling) are described .building of a vector model and building of a raster model. The first part of this paper presents the way to take control of the complexity of geographical realityusing objects classification, object shape simplification and projection of three-dimensional space (3- D) to the 2-D dimension. The second part describes five vector models: an object-oriented non-topological model, a source model as non-arranged list of vectors (model spaghetti), an elementary topological model, a chain topological model and an object-oriented topological model. In descriptions of each models the recordings of geometric structural elements, topology and objects are presented. The third part describes building of three raster models: a the global (universal) model, a global classselected model and a set of thematic layers, based on hierarchical image transformation to linear form. The last part is devoted to the digital modeling of topographical surface . to building of digital terrain models. This short chapter contains only an outline of this subject. Modeling of topographical surface is a very broad problem, which needs separate, extensive description.