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“去主持人化”——网络时代电视节目的极简选择 被引量:12
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作者 谷岩 胡哲 《南方电视学刊》 2016年第1期86-88,共3页
为了留住打开电视的观众,电视媒体唯一的选择就是保持节目高强度的吸引力,不能让任何环节的信息弱化。"去主持人化"是电视媒体在网络平台强劲冲击下做出的极简选择,是一种压力之下的激变。
关键词 去主持人化 极简选择 原因 利弊
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Characterization of Photovoltaic Modules under Arid Environments
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作者 Abubaker Younis Esam Elsarrag +1 位作者 Yousef Alhorr Mahmoud Onsa 《Journal of Energy and Power Engineering》 2018年第1期44-56,共13页
Performance characteristics data of solar photovoltaic (PV) cell/module are conventionally obtained under standard testing conditions. In the present work, the performance of PV modules under extreme temperatures an... Performance characteristics data of solar photovoltaic (PV) cell/module are conventionally obtained under standard testing conditions. In the present work, the performance of PV modules under extreme temperatures and insolations experienced in State of Qatar was utilized to aid presenting a simplified characterization approach for the special case of arid environmental conditions. The chosen model was the well-known single diode model with both series and parallel resistors for greater accuracy. The modeling technique was validated by comparing the numerically calculated electrical characteristics with experimentally obtained data using two approaches: a single indoor fixed monocrystalline PV module inside a solar simulation chamber which physically simulated different weather scenarios by changing irradiation intensities and temperature, and a set of outdoor fixed polycrystalline PV modules. The result of the indoor experiment was presented in form of performance curves, and the outdoor experiment results in a monthly accumulated power production chart format. Both illustration types showed acceptable tolerance. 展开更多
关键词 Photovoltaics electrical characterization mathematical modeling.
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