18 research outputs found
Use of citric acid-plasticized polyvinyl alcohol for cotton warp yarns cold sizing
No full text241-250The properties of pure and citric acid-plasticized polyvinyl alcohol sizes in terms of viscosity, cohesive power, adhesive capacity, mechanical properties, and hairiness of sized yarns have been studied. Furthermore, pure and plasticized polyvinyl alcohol films are characterized by FTIR spectroscopy to describe intermolecular interactions. The morphology of sized yarns is studied by SEM images. It is confirmed that citric acid could enhance film properties, adhesion ability of polyvinyl alcohol to cotton fibres, hairiness, and mechanical properties of sized yarns. The desizeability of the prepared sizes is also checked and found high and efficient, which indicates that the citric acid-plasticized polyvinyl alcohol possess the application potential to cotton warp cold sizing
Radar Based Human Vital Sign Detection In Cars: A System Analysis
No full textThis thesis analyses different radar systems for sensing chest movement to detect human presence inside a car. The detection in this thesis is limited to sensing breathing rate, although heartbeat detection is considered a possibility. A comparison is made between CW-, FMCW-, pulsed- and UWB pulsed radar. UWB pulsed radar was chosen to be a suitable technology for this application. As a benchmark, the Xethru X4 SoC by Novelda is used. The parameters and the working of Xethru X4 are investigated. A suitable antenna for Xethru is designed and simulated. Different detection techniques are discussed. The feasibility of the Xethru X4 is tested by means of calculations in different settings. Based on these tests, the Xethru X4 is evaluated and concluded to be suitable for detecting human presence inside a car by means of vital sign detection.EE3L11 Bachelor graduation project Electrical EngineeringElectrical Engineerin
A comparative Study of the mobile learning approaches
No full textInternational audienceWith the emergence of mobile devices (Smart Phone, PDA, UMPC, game consoles, etc.), and the growth of offers and needs of a company under formation in motion, multiply the work to identify relevant new learning platforms to improve and facilitate the process of distance learning. The next stage of distance learning is naturally the port of e-learning to new mobile systems. This is called m-learning (mobile learning). Because of the mobility feature, m-learning courses have to be adapted dynamically to the learner’s context. Several researches addressed this issue and implemented a mobile learning environment. In this paper, we compare a list of mobile learning architectures with methods presented in the literature. The evaluation presents a set of criteria specifically identified to qualify m-learning architectures dedicated to the context-change management
Educational Assessment: Pupils’ Experience in Primary School (Arabic Grammar in 7th Year in Tunisia)
No full textThe effect of prolonged drought on a coastal aquifer in water scarcity regions: A case study of Lebna (Cap Bon, Northeast Tunisia)
No full textInternational audienc
3D Integration for Modular Quantum Computer based on Diamond Spin Qubits
No full textQuantum computer chip based on spin qubits in diamond uses modules that are entangled with on-chip optical links. This enables an increased connectivity and a negligible crosstalk and error-rate when the number of qubits increases onchip. Here, 3D integration is the key enabling technology for a large-scale integration of the diamond spin qubits with photonic and electronic circuits for routing, control and readout of qubits. There are several engineering challenges to integrate the large number of spins in diamond with the on-chip circuits operating at a cryogenic temperature. In this paper we will address challenges, present recent results and discuss future outlook of the integration technology for realization of a scalable quantum computer based on diamond spin qubits.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.QID/Ishihara LabQuantum Circuit Architectures and Technolog
Comparative Study of the Mobile Learning Architectures
No full textInternational audienceWith the emergence of mobile devices (Smart Phone, PDA, UMPC, game consoles, etc.), learning is changing from electronic learning (e-Learning) to mobile learning (m-learning). In fact, due to the mobility feature, it seems that the m-learning have to be adapted with the change within the context. Several researches addressed this issue and implemented a mobile learning environment to prove its usefulness and feasibility in various domains. In this article, we conduct a comparative study between a list of mobile learning architectures and methods that are presented in the literature. The performance of these architectures is evaluated based on several criteria, such as the adaptation management, which is an important parameter for the management and customization of the learning resources for the learners, as well as the environment, which is a core part of mobile learning systems
