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（四）组织开展主题性群众性科普活动。高校应立足学科特色与科技资源优势，在全国科普月、全国科技工作者日、全国科技活动周等重大活动期间，面向公众组织开展主题性科普活动。有条件的高校应向公众开放科技基础设施和科技资源，举办高校科学节、实验室开放日、前沿科技体验周等科普活动，以生动的科技创新科普化成果，培育和弘扬创新文化，推动形成崇尚科学、追求创新的风尚。
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数据来源：中国苹果产业协会、国家苹果产业技术体系《中国苹果产业发展报告》
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Git packfiles use delta compression, storing only the diff when a 10MB file changes by one line, while the objects table stores each version in full. A file modified 100 times takes about 1GB in Postgres versus maybe 50MB in a packfile. Postgres does TOAST and compress large values, but that’s compressing individual objects in isolation, not delta-compressing across versions the way packfiles do, so the storage overhead is real. A delta-compression layer that periodically repacks objects within Postgres, or offloads large blobs to S3 the way LFS does, is a natural next step. For most repositories it still won’t matter since the median repo is small and disk is cheap, and GitHub’s Spokes system made a similar trade-off years ago, storing three full uncompressed copies of every repository across data centres because redundancy and operational simplicity beat storage efficiency even at hundreds of exabytes.