Browsing CSEM Archive by Title
Now showing items 733-752 of 983
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Quantifying and Modeling the Impact of Interconnection Failures on the Electrical Performance of Crystalline Silicon Photovoltaic Modules
(2018)We present an electrical model developed with LT SPICE that simulates the performance of a string of cells with disconnections in the electrical circuit. In a previous contribution, we quantified experimentally how the ... -
Quantifying and modeling the impact of interconnection failures on the electrical performance of crystalline silicon photovoltaic modules
(2019)Failures in the metallic interconnections are among the main degradation modes for photovoltaic modules. Fatigue accumulation due to thermomechanical stresses can result in deterioration of the solder joints or in broken ... -
Quantifying competitive grain overgrowth in polycrystalline ZnO thin films
(2019)The grain size evolution of polycrystalline thin films, which form by competitive grain overgrowth as commonly interpreted using the van der Drift model, is understood to follow a power-law scaling of the average grain ... -
Quantifying the potential of smart heat pump control to increase the self consumption of photovoltaic electricity in buildings
(2018)Energy management systems that efficiently use self-produced renewable energy are becoming popular. However, quantifying their benefits in terms of self-consumption increase and associated financial benefits, is difficult ... -
Quantitative Micro-Raman Spectroscopy for Partial Pressure Measurement in Small Volumes
(2017-12-01)We demonstrate the quantitative capabilities of Raman confocal microscopy as a nondestructive method to measure the partial pressure of molecular gases in mm3 range sealed volume having an optical access. Thanks to a ... -
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 ...