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曾经的拳王遭到陷害，在比赛场上打死了对手。后来被判入狱，好不容易出来后，却不敢和自己亲生女儿相认。在当地做了一个保安，陪伴在女儿身边，没想到女儿居然做起了扒手和小偷的勾当。他装作朋友的身份接近她，给她指引。却发现她陷入一场毒品相关的事件中，拳王为拯救女儿，独闯龙潭。为庆祝改革开放40周年，展示改革开放的历程，由中央宣传部、中央改革办、中央党史和文献研究院、国家发展改革委、国家广播电视总局、新华社、中央广播电视总台、中央军委政治工作部联合拍摄的8集政论专题片《必由之路》，从12月11日起在中央电视台综合频道播出。该片以改革开放是坚持和发展中国特色社会主义的必由之路为主题，回顾改革开放40年历程，揭示中国特色社会主义是建立在中国共产党长期奋斗基础上，是由党带领人民取得的，改革开放是决定当代中国命运的关键，也是决定实现“两个一百年”奋斗目标、实现民族复兴的关键。　　一次一次对立的任务，让他们慢慢的了解对方，慢慢的欣赏对方，各自在完成任务的同时，也在进行着相互策反。唐伯虎点秋香，套上武侠喜剧，再由周星河来出演，这是什么鬼？这还能看吗？会不会辣眼睛，把眼睛辣瞎？对。SYN attack is a kind of DOS attack. It takes advantage of TCP protocol defects and consumes CPU and memory resources by sending a large number of semi-connection requests. SYN attacks can not only affect hosts, but also harm network systems such as routers and firewalls. In fact, SYN attacks can be implemented as long as these systems turn on TCP services no matter what systems are targeted. As can be seen from the above figure, the server receives the connection request (syn=j), adds this information to the unconnected queue, and sends the request packet to the client (syn=k, ack=j+1), then enters the SYN_RECV state. When the server does not receive an acknowledgement packet from the client, it retransmits the request packet and does not delete this entry from the non-connection queue until the timeout. With IP spoofing, SYN attacks can achieve good results, Typically, clients forge a large number of non-existent IP addresses in a short period of time, SYN packets are continuously sent to the server, and the server replies to the confirmation packets and waits for the confirmation of the customer. Since the source address does not exist, the server needs to continuously resend until it timeout. These forged SYN packets will occupy the unconnected queue for a long time, normal SYN requests will be discarded, the target system will run slowly, and in serious cases, the network will be blocked or even the system will be paralyzed.在一个大家未知的时空里，有着百年建校史的魔法校园魔女乌龙院里，培养着魔力各异的魔女团体。尚未发现魔力的女主角贝贝在入学后这段时间里却发生了一系列匪夷所思的事件--吸血鬼重现人间、魔女离奇失联，全校唯一的男教师--杰克老师行踪神秘，疑似和魔女们的死对头--吸血鬼女王菲奥娜有着不可告人的秘密。杰克老师的真实身份究竟是什么？努力成为魔女的贝贝能否和魔女们一起打败吸血鬼的邪恶势力？一场魔女与吸血鬼的世纪之战即将拉开帷幕。Information Theory: I forget which publishing house it was. It is a very thin book and it is very good. There is a good talk about the measurement of information, the understanding of entropy and the Markov process (there is no such thing in the company now, I'll go back and find it and make it up). Mastering this knowledge, it is good for you to understand the cross entropy and relative entropy, which look similar but easy to confuse. At least you know why many machine learning algorithms like to use cross entropy as cost function ~