Wyniki wyszukiwania - BazTech

1

Distributed and collaborative product engineering for MEMS

Schmidt T., Hahn K., Mielke M., Brück R., Ortloff D., Popp J.

International Journal of Microelectronics and Computer Science

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2010

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Vol. 1, nr 3

277-286

EN

Small and inexpensive acceleration sensors, cameras, microphones, micro-mirrors, touch-panels and other products of the MNT industry are the core components of almost every new and innovative electronic appliance. Customer-tailored functions and specifications require a deep involvement of the customer throughout the whole value chain. Often the varying stages of the product engineering flow are carried out by diverse companies (or at least different departments) in different locations. With "time to market" being essential, a fast and effective product engineering approach along with comprehensive software support is required. In this paper we introduce a comprehensive methodology and based on that a concept for a distributed environment for customer-oriented product engineering of MEMS products. The development is currently carried out in an international EU research project.

2

Deterioration models for sewer networks

Schmidt T.

Prace Naukowe Instytutu Inżynierii Lądowej Politechniki Wrocławskiej. Konferencje

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2005

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Vol. 53, nr 20

363-373

EN

Sewers deteriorate sooner or later. Two types of models have been developed recently for modelling this deterioration process, using CCTV-inspection results. They are based on methods of survival analysis and Markov processes. These approaches are introduced and described. Examples illustrate the calibration of theses models and interpretation of their results. Potential problems of the two approaches are shown and discussed. The paper concludes with an introduction of further applications of the resulting deterioration model for individual sewer networks.

PL

Kanały sanitarne w trakcie eksploatacji ulegają nieuchronnemu procesowi pogarszania się ich stanu technicznego. W ostatnim czasie opracowano dwa modele opisujące proces pogarszania się stanu technicznego kanałów, bazujące na rezultatach inspekcji telewizyjnych. Podstawą tych modeli są metody matematyczne analizy niezawodności oraz procesu Markowa. Ujęcia rozpatrywanego zagadnienia zostały wprowadzone i opisane. Przykłady zawarte w pracy ilustrują kalibrację modeli oraz interpretację wyników. Wskazane zostały problemy związane z aplikacją prezentowanych modeli starzenia kanałów. W podsumowaniu pracy zaprezentowano możliwości zastosowania opisywanych modeli starzenia do określania przyszłego stanu technicznego konkretnych kanałów.

3

Extending SSM to MIPv6 – problems, solutions and improvements

Schmidt T., Wählisch M.

Computational Methods in Science and Technology

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2005

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Vol. 11, nr 2

147-152

EN

Multicast data delivery carries distinct importance in mobile wireless environments, where bandwidth is limited and transmission channels are shared between users. The development of mobile multicast protocols consequently exhibits emerging interest. As the common approach of Any Source Multicast distribution is burdened with intricate routing procedures, the spread of multicast-enabled network infrastructure remains hesitant. I t is widely believed that simpler mechanisms for group distribution in Source Specific Multicast (SSM) will lead to a pervasive dissemination of multi-cast infrastructure and services. However, SSM is designed for the a priori known and changeless addresses of multicast sources and thus withstands any easy extension to mobility. This paper reviews the state-of-the-art in current work to extend SSM to Mobile IPv6 networks. The principle conceptual problems are discussed and analysed. Propositions for improvement and possible directions to proceed further in SSM source mobility are presented.

4

Exotic phase transitions in RERhSn compounds

Łątka K., Kmieć R., Kruk R., Pacyna A., Rams M., Schmidt T., Pöttgen R.

Nukleonika

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2003

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Vol. 48,suppl.1

35-40

EN

Crystal and magnetic properties of three equiatomic ternary RERhSn compounds (where RE = Ce, Nd, Gd) have been studied by means of X-ray diffraction, ac, and dc magnetic susceptibility measurements, as well as using Mössbauer spectroscopy with 119Sn and 155Gd resonances. CeRhSn does not order magnetically down to 2 K while NdRhSn undergoes ferromagnetic transition at TC = 10.3 K and GdRhSn orders antiferromagnetically below TN = 16 K. Our CeRhSn and NdRhSn samples become superconductive below 6.5 K and 6.9 K, respectively.