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the Los Angeles Police Department (LAPD) faces several pressing and interrelated challenges, with low staffing levels affecting how the Department responds to such challenges. The decline in staff levels is affecting the Department’s mission and t...
Cabo Verde — a small island economy subject to a fragile ecological system, natural hazards and the looming threat of climate change — can best safeguard and extend its social development progress by integrating it growth into a trade-based econom...
Saving rates are significantly different across countries and remain different for long periods of time. This paper provides an explanation for this phenomenon. We formalize a model of a world economy comprised of open economies inhabited by heter...
The Gambia’s economy continued its recovery in 2024, driven by agriculture and services on the supply side and by public and private consumption and investment spending on the demand side. Economic growth accelerated from 4.8 percent in 2023 to an...
在 AWS S3 等云对象存储上以 Parquet 格式存储数据已成为主流选择,不仅能用于大规模数据湖场景,还可作为轻量级特征库支撑训练推理,或充当检索增强生成(RAG)的文档存储。然而,直接从 S3 查询 PB 级至 EB 级数据湖仍然存在严重的性能瓶颈,查询延迟通常高达数百毫秒至数秒。
本文介绍如何利用 Alluxio 在超大规模数据湖上构建高性能缓存加速层,实现对 Parquet 文件的查询优化。无需专用硬件、无需修改数据格式或访问对象的URL路径、无需迁移数据,Allu...
报告聚焦“十五五”窗口期,系统分析中国低空经济治理体系的演进路径。核心观点认为,低空经济从示范试点迈向网络化运营,关键在于构建清晰、高效的“天空规则”。报告以规则为主线,梳理空域管理沿革,解析“人、机、环、管、网”五维安全体系,并诊断法规、技术、管理、市场、社会五大瓶颈。提出以“四张网”为核心的智慧空管蓝图,并规划“三步走”发展路径,辅以新基建投入产出分析与地方实施策略,为政策制定者、投资者与行业参与者提供可操作的战略建议与行动框架。