Database Systems Design, Implementation & Management, 13th-Carlos Coronel(2018).pdf Carlos Coronel的数据库系统设计实现与管理（13版） | 数据库入门教材 | MySQL | SQLServer

类型理论（Type theory）,E文。 作者Luca Cardelli Digital Equipment Corporation Systems Research Center

Control Systems Engineering 控制系统工程 6th Norman S. Nise 英文版第6版

In the most general meaning, a distributed computer system is identified with computer network. There are two problems with this identification. One concerns the word “computer”. Even the origins of such systems encompassed not only computers but also devices far from being computers, like missile launchers and other military objects (a brief historical outline is in Chap. 2). Let alone today’s networks that connect things of professional and everyday usage: one can hardly say that the so-called intelligent refrigerator is a computer. The other problem concerns the word “distributed”. The main feature of such architectures is lack of shared physical memory, where processors intercommunicate by message passing through data links (channels) of arbitrary length and bandwidth. So, in this meaning, a motherboard of transputers (Sect. 5.3 in Chap. 5), processors interacting by data packet exchange inside one machine, all are distributed systems too. But on the other hand, a computer surrounded by simple terminals for data input and output, multi-access computer or workstations with direct access to memory of a mainframe, are systems categorized as not distributed in the aforesaid meaning, though distributed in the common parlance, because separated spatially. Nonetheless, the distinguishing characteristic of distributed computer systems as the research and engineering domain, is inter-computer communication by message passing based on networks. However, the design, technical solutions, and appli- cation of distributed systems and general (“generic”) networks, are not identical. The conceptual difference lies in their destination. A distributed system is being often constructed as a computation environment for specific class of applications, for a company of certain activity profile, for a corporation or education center, whereas a network is a universal tool for data transmission not limited to particular applications. Thus, the constructional difference consists in softw

RF经典教材之一 (共有两册，这是第一册的Part2，本书共分为５个部分Part1~Part5,）中译本: 现代无线系统射频电路实用设计(电子工业出版社)

本书记录了基于时间触发（TT）架构的可靠的实时嵌入式系统软件开发的行业验证方法。

Chen Tongwen,Francis Bruce. December 1994

电子技术权威著作， 用系统方法研究电子系统的设计，分析

在推荐系统中，在矩阵分解中利用文本信息来减轻数据稀疏性的问题已经做出了许多努力。 最近，一些工作已经探索了神经网络，以对文本项内容进行深入的了解，并通过生成更准确的项潜在模型获得了令人印象深刻的效果。 然而，在矩阵分解中如何有效利用用户和项目的描述文档仍然存在一个未解决的问题。 在本文中，我们提出了使用深度神经网络（DRMF）进行双正则化矩阵分解的方法。 DRMF采用卷积神经网络和门控递归神经网络堆叠的多层神经网络模型，以生成用户和项目内容的独立分布式表示。 然后，表示法用于规范矩阵分解中用户和项的潜在模型的生成。 我们提出了学习DRMF中所有参数的相应算法。 实验结果证明，双向正则化策略显着提高了矩阵分解方法的评分预测准确性和前n个推荐的召回率。 而且，作为DRMF的组成部分，新的神经网络模型比单一卷积神经网络模型更好地工作。

Structure and Interpretation of Signals and Systems的课后习题答案