Refine
Year of publication
Document Type
- Conference Proceeding (36) (remove)
Conference Type
- Konferenzartikel (31)
- Konferenz-Abstract (2)
- Konferenz-Poster (2)
- Sonstiges (1)
Language
- English (36) (remove)
Keywords
- Couplings (3)
- Design automation (3)
- Mobile Learning (3)
- FETs (2)
- Finite difference methods (2)
- Frequency (2)
- Integrated circuit interconnections (2)
- Microwave devices (2)
- Semiconductor device packaging (2)
- Transceivers (2)
- content adaptation (2)
- device independent learning (2)
- e-learning (2)
- virtual reality (2)
- 3D User Interface (1)
- 3D displays (1)
- 3D modeling (1)
- 3D printing (1)
- 3D virtual reality (1)
- Agent based sensor (1)
- Aircraft (1)
- Algorithmus (1)
- Android (1)
- Approximation (1)
- Attenuation (1)
- Beschichtung (1)
- Blended Learning (1)
- Closed-form solution (1)
- Cloud Security (1)
- Cloud Service Provider (1)
- Cloud User (1)
- Coatings (1)
- Collaborative learning (1)
- Communication networks (1)
- Couplers (1)
- DVB-T (1)
- Data communications (1)
- Data modeling (1)
- Databases (1)
- Datenmanagement (1)
- Device independency (1)
- Differential equations (1)
- Downlink (1)
- E-Learning (1)
- Electromagnetic compatibility (1)
- Energy storage (1)
- Enhanced Security (1)
- Equivalent circuits (1)
- Eye tracking (1)
- Filters (1)
- Finite-Differenzen-Methode (1)
- Finite-Elemente-Methode (1)
- Flashcards (1)
- Gratings (1)
- In-flight entertainment (1)
- Internet Overlay networks (1)
- Joining processes (1)
- Knowledge sharing (1)
- Kupplung (1)
- Language acquisition (1)
- Language learning (1)
- M-learning (1)
- Microwave integrated circuits (1)
- Microwave integrated circuits Equivalent circuits (1)
- Mobile device (1)
- Mobile devices (1)
- Network topology (1)
- Online Student Services (1)
- Optik (1)
- Peer to peer computing (1)
- Peer to peer network (1)
- Photonik (1)
- Propagation losses (1)
- Rails (1)
- Random call model (1)
- Routing (1)
- Segmentierung (1)
- Smart grids (1)
- Student activities (1)
- Time series data (1)
- Transducers (1)
- User generated content (1)
- User interface (1)
- VR (1)
- Virtual private networks (1)
- Virtual reality (1)
- Virtuelle Realität (1)
- agent (1)
- agent based systems (1)
- approximate histograms (1)
- bio-inspired models (1)
- collaborative learning (1)
- content formatting (1)
- content synchronization (1)
- device detection (1)
- device independency (1)
- distributed computing (1)
- flashcard (1)
- generalized content (1)
- guided waves (1)
- kanal (1)
- language learning (1)
- m-learning (1)
- mobile learning (1)
- mobile web design guidelines (1)
- multidimensional flashcard (1)
- peer to peer network (1)
- reliability (1)
- remote laboratory (1)
- self-organizing networks (1)
- sensor node (1)
- time series data (1)
- wireless comunication (1)
Institute
Open Access
- Open Access (16)
- Closed (14)
- Bronze (8)
- Closed Access (6)
Structures for interconnecting active microwave semiconductor-devices, e.g. FET's and MIC's, with the electrical surrounding or with each other have to be designed more and more carefully when increasing the desired upper frequency limit. Therefore, several connecting structures for device embedding have been examined. Mainly, their applicability for the frequency range from 10 GHz to 100 GHz was considered. Additionally, different equivalent circuits were developed to approximately describe their behaviour for CAD-applications.
The advantages of the coupling-of-modes (COM) formalism and the transmission-matrix approach are combined to create exact and computationally efficient analysis and synthesis CAD tools for the design of SAW-resonator filters. The models for the filter components, especially gratings, interdigital transducers (IDTs). and multistrip couplers (MSCs), are based on the COM approach, which delivers closed-form expressions. In order to determine the relevant COM parameters, the integrated COM differential equations are compared with analytically derived expressions from the transmission-matrix approach. The most important second-order effects such as energy storage, propagation loss and mechanical and electrical loading are fully taken into account. As an example, the authors investigate a two-pole, acoustically coupled resonator filter at 914.5 MHz on AT quartz. Excellent agreement between theory and measurement is found.
Nowadays the processing power of mobile phones, smartphones and PDAs is increasing as well as the transmission bandwidth. Nevertheless there is still the need to reduce the content and the need of processing the data. We discuss the proposals and solutions for dynamic reduction of the transmitted content. For that, device specific properties are taken into account, as much as for the aim to reduce the need of processing power at the client side to be able to display the 3D (virtual reality) data. Therefore, well known technologies, e.g. data compression are combined with new developed ideas to reach the goal of adaptive content transmission. To achieve a device dependant reduction of processing power the data have to be preprocessed at the server side or the server even has to take over functionality of weak mobile devices.
The iSign project started in 2000 as a web-based laboratory setting for students of electrical engineering. In the meantime it has broadened into a heterogeneous learning environment offering learning material, adaptive user settings and access to a simulation tool. All these offerings can be accessed via web and wireless by different clients, such as PCs, PDAs and mobile phones. User adaptive systems offer unique and personalised environment for every learner and therefore are a very important aspect of modern e-learning systems. The iSign project aims to personalise the content structure based on the learner's behaviour, content pattern, policies, and system environment. The second aspect of the recent research and development within this project is the generation of suitable content and presentation for different clients. This generation is based additionally on the user preferences in order to obtain the desirable presentation for a given device. New, valuable features are added to the mobile application, empowering the user not only to control the simulation process with his mobile device but also to input data, view the simulation's output and evaluate the results. Experiences with students have helped to improve functionality and look-and-feel whilst using the iSign system. Our goal is to provide unconstrained, continuous and personalised access to the laboratory settings and learning material everywhere and at anytime with different devices.
This paper explores the potential of an m-learning environment by introducing the concept of mLab, a remote laboratory environment accessible through the use of handheld devices.
We are aiming to enhance the existing e-learning platform and internet-assisted laboratory settings, where students are offered in-depth tutoring, by providing compact tuition and tools for controlling simulations that are made available to learners via handheld devices. In this way, students are empowered by having access totheir simulations from any place and at any time.
In 2000 the iSign project started as a virtual web-based laboratory for students of study program electrical engineering. Continuous development in the last years led to a heterogeneous learning environment offering learning material, adaptive user settings and access to a simulation tool. Access is available via web and wireless devices such as PCs, Laptops, PDAs, smartphones and mobile phones. Our attempt to adapt the content to the user's needs and the currently used device led us to a XML based data structure. This report shows our research results about content adaptation based on XML data. The two main aspects for that process are: the device capabilities and the adaptation methods using XML data.
Nowadays the processing power of mobile phones, Smart phones and PDA is increasing, as well as the transmission bandwidth. Nevertheless there is still the need to reduce the content and the need of processing the data. Proposals and solutions for dynamic reduction of the transmitted content will be discussed. For that, device specific properties will be taken into account, aiming at reducing the need of processing power at the client side to display the 3D Virtual Reality data. Therefore, well known technologies like data compression are combined with new approaches to achieve the goal of adaptive content transmission. For device dependant reduction of processing power the data has to be pre-processed at the server side or the server itself has to take over functionality of weak mobile devices.