carnegieendowment
Those companies knew they had a captive audience, so they bought up as many journals as they could. Journal articles aren’t interchangeable commodities like corn or soybeans—if your science supplier starts gouging you, you can’t just switch to a new one. Adding to this lock-in effect, publishing in “high-impact” journals became the key to success in science, which meant if you wanted to move up, your university had to pay up. So, even as the internet made it much cheaper to produce a journal, publishers made it much more expensive to subscribe to one.。关于这个话题，WPS下载最新地址提供了深入分析
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НАСА откроет стартовое окно Artemis II в апреле14:57。业内人士推荐WPS官方版本下载作为进阶阅读
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