Browsing CSEM Archive by Title
Now showing items 739-758 of 983
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Radiation hard mode-locked laser suitable as a spaceborne frequency comb
(2015-04-20)We report ground-level gamma and proton radiation tests of a passively mode-locked diode-pumped solid-state laser (DPSSL) with Yb:KYW gain medium. A total gamma dose of 170 krad(H2O) applied in 5 days generates minor changes ... -
Raising the one-sun conversion efficiency of III-V/Si solar cells to 32.8% for two junctions and 35.9% for three junctions
(2017)Today''s dominant photovoltaic technologies rely on single-junction devices, which are approaching their practical efficiency limit of 25-27%. Therefore, researchers are increasingly turning to multi-junction devices, which ... -
Real Time Eye Gaze Tracking for Human Machine Interaction in the Cockpit
(2022-03-02)The Aeronautics industry has pioneered safety from digital checklists to moving maps that improve pilot situational awareness and support safe ground movements. Today, pilots deal with increasingly complex cockpit environments ... -
Real-time Fall Detection Using Smartwatches
(2018-07-02) -
Real-time gait analysis with accelerometer-based smart shoes
(2017)In this paper, we present the evaluation of a new smart shoe capable of performing gait analysis in real time. The system is exclusively based on accelerometers which minimizes the power consumption. The estimated parameters ... -
Real-time monitoring of swimming performance
(2016)This article presents the performance results of a novel algorithm for swimming analysis in real-time within a lowpower wrist-worn device. The estimated parameters are: lap count, stroke count, time in lap, total swimming ... -
Rear-emitter silicon heterojunction solar cells with atomic layer deposited ZnO:Al serving as an alternative transparent conducting oxide to In2O3:Sn
(2019)Here high-efficiency (above 21%) large-area silicon heterojunction solar cells with atomic layer deposited ZnO:Al as front- or back-side transparent conducting oxide are demonstrated. Photoconductance decay measurements ... -
Reassessment of Cell to Module Gains and Losses: Accounting for the Current Boost Specific to Cells Located on the Edges
(2018)The power produced by a photovoltaic module is not simply the sum of the powers of its constituents cells. The difference stems from a number of so-called 'cell-to-module' (CTM) gain or loss mechanisms. These are getting ... -
Receiver operating characteristic analysis to determine optimal fluid management during open colorectal surgery
(2019-02)Aim The present study aimed to analyse fluid management and to define optimal fluid-related thresholds for elective open colorectal surgery. Method A retrospective analysis was made of all consecutive elective open colorectal ... -
Reconstructing Evolving Tree Structures in Time Lapse Sequences by Enforcing Time-Consistency
(2018)We propose a novel approach to reconstructing curvilinear tree structures evolving over time, such as road networks in 20 aerial images or neural structures in 3D microscopy stacks acquired in vivo. To enforce temporal ... -
Record-Efficiency n-Type and High-Efficiency p-Type Monolike Silicon Heterojunction Solar Cells with a High-Temperature Gettering Process
(2019)We report independently confirmed 22.15% and record 22.58% power conversion efficiencies for thin (130-140 mu m) p-type and n-type monolike Si solar cells, respectively. We comparatively assessed advanced n-type and p-type ... -
Redesign, manufacturing and validation testing of a space-compatible slipring rotor based on additive manufacturing
(2019-09-19)A novel design concept has been developed based on an Additive Manufacturing (AM) process, enabling the redesign of the rotor of a cylindrical Slipring Assembly (SRA) intended for space applications. The implementation of ... -
Reliability assessment and failure mode analysis of MEMS accelerometers for space applications
(2018)In the present work, the reliability assessment of capacitive MEMS accelerometers of 3 different suppliers (codenamed A, B, and C) for their use in space applications was performed. The developed reliability assessment ... -
Reliability assessment of miniaturised electromechanical RF relays for space applications
(2022-11)A test programme was developed for the reliability assessment and evaluation of radiofrequency (RF) miniaturised electromechanical relays (MEMR) as required for space application. The test programme allows to carry out the ... -
Reliability evaluation of a MEMS scanner
(2017)Previously, the realization and closed loop control of a MEMS scanner integrating position sensors made with piezoresistive sensors was presented. It consisted of a silicon compliant membrane with integrated position ...