Being a parent is usually all about giving of yourself to foster your child's growth and development. But what happens when this isn't the case? Some parents dismiss the needs of their children, asserting their own instead, demanding attention and reassurance from even very young children. This may especially be the case when a parent has narcissistic tendencies or narcissistic...(展开全部)

Being a parent is usually all about giving of yourself to foster your child's growth and development. But what happens when this isn't the case? Some parents dismiss the needs of their children, asserting their own instead, demanding attention and reassurance from even very young children. This may especially be the case when a parent has narcissistic tendencies or narcissistic...(展开全部)

乔希•西普（Josh Shipp） 美国畅销书作家，全球青少年励志专家，演讲家。他曾在哈佛大学、斯坦福大学、麻省理工学院等发表青少年问题的演讲，同时也是CNN、福克斯电视台、《纽约时报》等媒体机构的知名青少年专家。他因制作纪录片《青少年问题》而闻名。他创办的组织“有爱心的成年人”为父母、教育工作者等提供相关资源和培训活动，帮助成年人了解青少年，也帮助青少年了解他们自己。

《UPS电源技术及应用》主要介绍UPS各部分电路的工作原理以及典型设备的操作使用与常见故障检修。本书共分为10章：第1章介绍了UPS的功能、性能指标、基本结构形式及其发展趋势；第2章至第5章讨论了UPS常用电力电子器件、功率变换电路、控制技术以及其他主要电路；第6章介绍了蓄电池及其管理系统；第7章介绍了UPS的选型、安装、使用及维护；第8章至第10章进行了典型UPS实例剖析。UPS的生产厂家及其品牌很多，UPS实例剖析部分本着按类选取的原则，既有小功率UPS，又有中、大型UPS；既有后备式UPS，又有在线式UPS。这些实例是从较多的UPS产品中选取的，通过UPS实例剖析，读者可掌握典型UPS的技术参数与基本结构、电路工作原理及常见故障检修。本书在编写过程中力争做到注重内容的先进性与实用性，理论联系实际，图文并茂、通俗易懂，便于教学与自学。本书即可作为UPS维护与管理人员的参考图书，也可作为高等学校电气工程及其自动化、通信工程、工业自动化、机电一体化等相关专业的专业课教材。

数据中心UPS系统运维在介绍UPS基本知识的基础上，着重介绍了当前数据中心主要使用的双变换在线式UPS的电路组成和工作原理，重点讨论了蓄电池配置的计算方法和UPS针对不同负载的选型计算方法，尤其对数据中心UPS配电系统供电方案、UPS的操作方法以及UPS主机和蓄电池组的巡检及维护方法进行了重点介绍。 数据中心UPS系统运维力求理论和实践相结合，书中所列UPS供电方案及运维保养方法普遍适用于当前主流的数据中心UPS供电系统。数据中心UPS系统运维是关于数据中心UPS运维工作流程的指导性教材，对数据中心UPS运维管理从业人员大有裨益。

The leadership style described in this book is simple and direct and it works.The straightforward and easy-to-understand lessons provide a blueprint for an individual or company to build on past successes and adapt to future challenges.

数据中心UPS系统运维在介绍UPS基本知识的基础上，着重介绍了当前数据中心主要使用的双变换在线式UPS的电路组成和工作原理，重点讨论了蓄电池配置的计算方法和UPS针对不同负载的选型计算方法，尤其对数据中心UPS配电系统供电方案、UPS的操作方法以及UPS主机和蓄电池组的巡检及维护方法进行了重点介绍。 数据中心UPS系统运维力求理论和实践相结合，书中所列UPS供电方案及运维保养方法普遍适用于当前主流的数据中心UPS供电系统。数据中心UPS系统运维是关于数据中心UPS运维工作流程的指导性教材，对数据中心UPS运维管理从业人员大有裨益。

The leadership style described in this book is simple and direct and it works.The straightforward and easy-to-understand lessons provide a blueprint for an individual or company to build on past successes and adapt to future challenges.

The mesmerizing work of Dutch graphic artist M. C. Escher has fascinated viewers for more than seventy years. His illustrations constantly play with our perceptions of reality by layering multiple conflicting perspectives. Produced in association with the Escher estate, this book presents some of the artist’s most intriguing works in original three-dimensional pop-ups. These ma...(展开全部)

***THE SUNDAY TIMES BESTSELLER*** BOOK OF THE YEAR IN GUARDIAN, ECONOMIST & NEW STATESMAN 'Excellent and provocative... a passionate, timely book.' Sunday Times 'A fine new book... thoughtful, deeply reported and impeccably even-handed.' The Times Emerging from a collection of city states 150 years ago, no other country has had as turbulent a history as Germany or enjoyed so mu...(展开全部)