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      "author": "nishuxr",
      "body": "the picture is so good,,wow!!!,\"Cherry Blossom festival \"\nthanks for sharing,,scenery is too good,,\nAs a new user on steemit platform\nMy first blog on steemit::\n(check it if possible)\nhttps://steemit.com/introducemyself/@nishuxr/new-walkway-of-nishuxr-s-on-steemit",
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    {
      "author": "jxcwu",
      "body": "# The Oldest Library in Wuhan University(武汉大学老图书馆)\n![07-05_134728-3.jpg](https://steemitimages.com/DQmcznHUYb3y9WciD2vsw3XSMcrgPJTos9NmtEQzhYMX2BR/07-05_134728-3.jpg)\n\n#The most Beautiful University in China（中国最美大学）\n![C10AB9117012EF37EF5A565321CF6C51.jpg](https://steemitimages.com/DQmdov3Np4NRFr5NTaGU1ytPaZdNYZi63k3p4jWBMrNTEcM/C10AB9117012EF37EF5A565321CF6C51.jpg)\n\n# Cherry Blossom Festival(樱花节)\n![1237716107728_mthumb.jpg](https://steemitimages.com/DQmV2TEc5yR126x66QfuQz6Q1WMVmMa5hHCqfm4nU6UfJNB/1237716107728_mthumb.jpg)\n\n\n\n# Sakura Castle(樱花城堡)\n![weire8980100922518.jpg](https://steemitimages.com/DQmNYdLLD1R4WxzddJdy7oFFqxVzo8geUoMYq2AYaxcKm15/weire8980100922518.jpg)\n\n\nThank you for reading. Your comment, upvote, and resteem are my biggest motivation to post :\n谢谢您花时间看这篇帖子。您的点赞评论和转发是我持续发帖的动力 :-)\n\nPlease follow me https://steemit.com/@leftbank !\n请关注我：https://steemit.com/@leftbank",
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      "body": "BTCC formerly known as BTC China, was founded in 2011 by Kai-Yuan Li, the terms of the sale of the company has not yet been open. BTCC announced that it will shift its business focus to the international market and its three major products, the \"National Pool\" of BTCC Pool, the Mobi Digital Asset Wallet and the USD Spot Trading Platform from BTCC. They are respectively provided by Zhao Qianjie, Senior Vice President of BTCC Pool, BTCC Ma Shi Yuan, vice president of Mobi, and Cai Minjie, vice president of the BTCC trading platform.\n![](https://steemitimages.com/DQmfZvxYQ4YhomRnaQvGLcx7EewxXCjRvPrww7zjmE2z4h1/image.png)\n\"We now have better resources to realize our vision of maintaining and stabilizing digital assets and blockchain networks,\" said Zhao Qianjie, senior vice president of BTCC Pool, \"In the future, the BTCC pool will be dedicated to providing global users Provide more fair, transparent, one-stop mining services. \"\n\nReported earlier this month, China stepped up its crackdown on encrypted currency transactions. People familiar with the matter told Bloomberg China plans to crack down on off-market focused trading of virtual currencies, including bitcoin, against Web sites and mobile apps that offer services similar to those of exchanges. It is learned that last year China began to take measures against this market by first banning the first tokens issue and then ordering the domestic exchanges to stop encrypting the currency transactions.\n\n\"Today's acquisition represents a milestone for BTCC and affirms and rewards our performance in recent years,\" said Li Qiyuan, co-founder of BTCC. \"The introduction of this resource will help BTCC to strengthen its position from 2018 I am very excited about the positive development of our business. \"",
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      "body": "![](https://steemitimages.com/DQmbe3dN398QcnKFi9qV94uznQ9eG3M5koEMJZimizj51Ma/image.png)\n\n最近一种新型僵尸网络正在全世界各地疯狂增长，主要瞄准没有保护的IoT设备，其中大部分是IP摄像头。\n\nA recent new type of botnet is growing wildly around the world, targeting mostly unprotected IoT devices, most of which are IP cameras.\n\n这款新型僵尸网络名为Hide'N Seek(NHS)，首次出现在1月10号，中间几天时间消失踪迹，于上周末20号回归，实力更加强劲。从最开始感染的12个设备到如今的超过1万4千台设备。\n\nThe new botnet, Hide'N Seek (NHS), first appeared on January 10 and disappeared in the middle of a few days and returned to strength on the 20th of last weekend. From the first 12 infected devices to today's more than 14,000 devices.\n\n## 与Mirai无关\n与最近几周出现的IoT僵尸网络不同，HNS的源代码并非是去年网上泄露的Mirai源代码的修改版。\n\n事实上，根据安全研究员调查，HNS僵尸网络更像Hajime。\n\nHNS是继臭名昭著的Hajime僵尸网络之后，至今为止，第二大知名的僵尸网络，具有去中心化、点对点的结构。然而，Hajime的P2P（点对点）结果是建立在BitTorrent协议上，HNS有自己定制的P2P通讯机制。\n\n每个bot都包含一系列其他受感染bot病毒的IP列表， 随着僵尸网络的增长，这个IP列表会进行实时调整。\n\nNHS的网络病毒依赖于彼此之间的指令和命令，这个和P2P协议的原理类似。HNSbot能够接受的指令包括：数据渗透、代码执行、影响其他设备的操作。\n## Having nothing to do with Mirai\n\nUnlike the IoT botnets that have emerged in recent weeks, the source code for HNS is not a modified version of the Mirai source code leaked online last year.\n\nIn fact, HNS botnets are more like Hajime, according to security researchers.\n\nHNS is the second most well-known botnet ever since the notorious Hajime botnet, with a decentralized, point-to-point structure. However, Hajime's P2P (Peer to Peer) result is based on the BitTorrent protocol, which has its own custom P2P communication mechanism.\n\nEach bot contains a list of IPs for a list of other infected bot viruses, and as the botnet grows, the IP list is adjusted in real time.\n\nNetwork viruses of the NHS rely on instructions and commands from each other, which is similar to the principle of P2P protocols. HNSbot acceptable instructions include: data infiltration, code execution, affect the operation of other devices.\n\n\n## 目前尚不能进行DDoS攻击\n\n目前安全研究员尚未发现DDoS攻击的功能，说明HNS僵尸网络打算部署为代理网络。\n\n## Currently   DDoS attacks are not currently available\n\nCurrently, security researchers have not discovered the function of DDoS attacks, indicating that the HNS botnet is going to be deployed as a proxy network.\n\n\n## HNS目前仍在发展中\n\nHNS在IoT恶意软件领域还是新生，HNS仍然处于不断发展变化的阶段。\n\n这些“新生”的僵尸网络都会逐渐消失，让我们祈祷HNS的作者会厌倦然后放弃他的“实验”吧。\n\n\n## HNS is still under development\n\nHNS is still new in IoT malware, and HNS is still in a phase of constant change.\n\nThese newborn botnets will gradually disappear, let us pray HNS authors will be tired and then give up his experiment.",
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      "body": "![](https://steemitimages.com/DQmP6Ko6eZJUd3zyRAj2bYczNzEnYFp87gCrZW1YfFevFZV/image.png)\n\n那次邂逅之后，我开发了一个小系统（工具），用于感知和预测。这里记那段经历。\n\n从实验室里出来，关上门，漆黑的走廊里非常安静。前方一个未知的女性身影静静前行。我继续思索着，一边跟着她向电梯走去。电梯附近的墙壁上，背景灯光透过前景散发出白色的炫丽光线，像舞台一样。逐渐清晰的流水声也为这里增加了一些美好的气氛。而她的身影也渐渐清晰。\n\n是她！我突然紧张起来，颤抖的我已经完全忘记是怎么走过去的......\n我希望更多地了解她，却苦于无任何理由靠近。是否可以通过多次相遇接触来逐渐加深印象？\n\n所幸对她以及环境我并非一无所知。虽然我们在同一个楼层的不同实验室，但处于同一个局域网。\n\n之前发现一个主机名的规律：以“xxx-pc”为主机名的电脑其用户名一般是“xxx”；而且拥有这台电脑的那个人的名字拼音或拼音首字母也是“xxx”；该电脑administrator被禁用，以“管理员权限运行”得到超级权限。\n\n打开我的电脑，在网络里看到很多主机的名字：有desktop、win开头的；有看起来像字母随机组合的；当然也有一定数量的“xxx-pc”。我一个一个地仔细比对，搜索一个叫作“yll-pc”的主机——我知道她的名字——竟然找到了！运气真是好。\n\n我迫不及待地ping了一下这台电脑，通了，也发现了它的IP。但是等等，虽然我发现存在一台叫“yll-pc”的电脑，也知道她的样子、她的名字、她有一台电脑，但这意味着“yll-pc”这一台就是她所有的那一台吗？同一个楼层有不少人，虽然似乎没有同名人，但也无法排除其他人使用“yll-pc”。\n\n如何验证这是否是她？\n\n一般来说：实验室是做事的地方，电脑是必须使用的工具；电脑开了就意味着要做事了；电脑关了就意味着暂时不做事了，要离开了（要去哪呢？）；夜深后的关机更加可能意味着离开实验室而回宿舍。作息规律的人在特定时刻开始或结束做事；三点一线的人行为模式较固定。这样来看的话，她应该很有可能在关机后从实验室出来？像那天晚上的21:30那样？那一刻的1分钟前，她是否正在关机？\n\n我尝试使用ping命令来确定这台电脑的开关机状态。如果直接ping的话，虽然能得到重要信息，但会被太多无用信息淹没。也可以像下面一过滤无用信息，但还有一个问题：提醒机制不友好，我仍然需要一直盯着这个黑窗口。而且这个管道操作在Windows下不正常。\n\n>  ping yll-pc -t | grep 超时\n\n更好的方案是：直接使用Java调用ping；使用正则匹配并转换pong（ping的返回）；使用Java逻辑过滤提供0到1的跳变（0不通；1通）；使用putty弹出一个顶层窗口给予明显提醒。提醒方式其实有很多，比如：弹出一个Java确定窗口；弹出js的alert()；向手机发现消息，控制其振动等等。但都需要较多的编程量，而我只需要一个尽快能给出明显提醒的机制，而且当时在我增加提醒机制的时候，时间已经接近21:30了。\n\n匆匆加入提醒机制，经过测试OK后，时间已经快到了。我紧绷的身体也松了一口气。接下来就是见证奇迹的时刻！当时刻即将到来时我又开始小紧张起来。我的程序有没有问题呢？天呐！那天晚上是21:30遇到她的，难道就能说她总是21:30离开吗？她一定会关机吗？谁说她一定要关机的！而且如果那台电脑根本不是她的呢......\n\n事实上21:30已经过了，都没有弹出窗口。就在我快要放弃时，门外传来两个女孩的声音，其中之一就是她！而也就在这时，黑色的putty窗口弹了出来！我稳住怦怦直跳的内心，静默了30秒......立即关上显示器；背上包；打开门出去；看到她在电梯前等着；今夜白色的灯光又开了，楼下的河水也在流淌......那天她说她想当老师......\n\n当时的情况应该是这个样子的：\n\n![](https://steemitimages.com/DQmbahuCUQ5aE14rxv5BxpXeZNmkL463yhbfqyJ14GbbHRP/image.png)\n\n\n她结束了一天的工作，要离开实验室了；当她按下电源键一段时间后，yll-pc就不会响应pong了；01-My-Name发现了这个跳变，于是弹出窗口；感知到一事件的我立即作出了反应。\n\n01-My-Name是我电脑的名字，为的是在主机列表里排第一而便于被发现，而且我Guest共享了所有的电影。因为也许我们会有机会聊聊喜欢的电影？\n\n因为兴奋而辗转反侧的我发现这个系统还不够完美。用于提醒的黑色putty窗口体验并不好；虽然不用盯着特定窗口，但需要在电脑盯着屏幕。\n\n可以使用手机振动的方式：01-My-Name检测到hop（跳变）后通过外网服务器；外网服务器转发给手机；通过移动网络连接的手机接收到消息后振动提醒。\n\n想法虽然好，不过仍然涉及到大量编程（尽管可行），而且手机振动提醒有时并不那么明显。另一方面：入手小米手环后，我发现它的来电提醒、短信提醒、通知提醒非常好用；很多网站都有短信验证功能（登陆时、改密时等）；curl可以模拟http/https请求。更加兴奋的我彻夜难眠，第二天一早就开始新系统的改进（如下），也是现在最终的样子。\n\n\n![](https://steemitimages.com/DQmPuJoYeAkBX9jRkb8E1zdGSEQTsJG2xurDxW4tfBcqXhw/image.png)\n\n由01-My-Name开始修改：程序检测到hop后，仍然是调用putty通过ssh连接QCloud，但执行命令变了；QCloud执行curl指令，请求广东移动登陆短信验证接口；广东移动接口向我的手机发送一个短信验证码；我的手机mi2s通过蓝牙向手环发出指令；手环振动我的手腕；感觉到振动的我作出反应。\n\n当然01-My-Name可以直接调用curl，不过Windows版curl不支持https（可能是我版本找没对吧）。总体来讲改动量并不大。最终的效果是每次她按一下power键我就会感觉到一次手环振动，按一下，振动一下......\n\n无论我是在实验室写程序，在图书馆看资料，在宿舍休息，还是在市内和同学聚餐，甚至在出差的火车上都能感知到她的动向。是否有点上帝的感觉呢？无论天涯海角......但有一次她敲门而入，白色的毛衣带着芬芳经过我的身后，此时黑色的窗口弹了出来，我一惊。\n\n事实上问题没有那么简单：她关机后不一定会立即走出实验室；网络抖动也会触发hop；很多不会优化电脑的人关机速度很慢，当收到hop时，人早已不知所踪；从其实验室到电梯前要20秒，等电梯要10秒，要如何在这短短的30秒里与她的时间重合？哪怕重合1秒！假如关机后未发现她，那么她是在身后，还是早已走在了前面？也许她选择了另一边的楼梯？\n\n我会在晚上跑步，然后洗澡、睡觉，这样的安排很完美不是吗？令人意外的是在络绎不绝、比肩接踵的操场上总会遇到令人心动不止的倩影——大学生活真好啊！那么问题来了：如果我以二倍于该倩影的速度，每一圈能遇见她几次？三倍呢？四倍呢？\n\n经过分析、计算和总结，我发现：如果我与她的速度一样，那么就像地球同步卫星一样，如果能看到她就一直能看到，如果看不到就会一直看不到；若我的速度是她的N倍，当我跑完第一圈时，她在我前方1/N圈处，那么这是一个相距1/N圈的追击问题，然后是2/N圈的追求问题......最终她每跑一圈，可与其相遇N-1次。\n\n如果我反向跑又会怎样？那么问题变成距离为1圈的相向问题。如果速度一样，则每跑半圈相遇一次；如果我是其N倍，每当其跑1/(N+1)圈相遇一次。\n\n这段经历给我的启发是：如果我逆向与她相向，则必相遇！有次在去实验室的路上，我的手环振动了一下，刚疑惑“这什么情况”就与她打个了照面。还有一次：我计算她从实验室到食堂要10分钟，绕过食堂到伸缩门要5分钟；而我从宿舍到伸缩门也要5分钟；当收到跳变时，我开始计时10分钟；然后向伸缩门走去；五分钟后在伸缩门看到了我的一群同学，问我去哪里，正奇怪怎么没看到她，难道我算错了，就发现了人群中的她，我并没有向她打招呼，回答去取钱；然后就真的去取了100块钱！\n\n我将期间收集到的数据保存了下来：\n### Nov 29 20:48:23 CST 20.. GETTING OUT\n###  Nov 30 09:25:07 CST 20.. GOT IN\n ### Nov 30 11:47:13 CST 20.. GETTING OUT\n### Nov 30 14:32:40 CST 20.. GOT IN \n### Nov 30 22:03:53 CST 20.. GETTING OUT\n\n用折线图画出来是这样的：![](https://steemitimages.com/DQmYzbJmEdhkk16hSJwhdrLpc4e3LtfvZgsJLKCxZrp6xSy/image.png)\n\n\n###   Dec 01 10:07:30 CST 20.. GOT IN \n\n用折线图画出来是这样的：\n\n![](https://steemitimages.com/DQmPuJoYeAkBX9jRkb8E1zdGSEQTsJG2xurDxW4tfBcqXhw/image.png)\n\nIn为-1，Out为1。第一个正跳变是她离开实验室回宿舍；接下来的负跳变是第二天来到实验室；上午短暂的工作后的第三个跳变是离开实验室午休......从中可以看出她有时午休，有时不午休（午休时间太长，应该不会开着机吧？）。\n\n如果不考虑午休的话，折线图会是一个接一个的S型。总体来看，她的作息是规律的。偶尔的不规律可能是她有其它活动。比如有一次感知她的不规律活动时，透过朋友的示意，跟着人群的我看到了玻璃墙那边的她。\n![](https://steemitimages.com/DQmXp3mrHNiVa5Pqpce3JVeL6qhJjzhxdcJ6xCnMuWj7ipD/image.png)\n\n\n实这种规律这也是源于二点一线（工作-休息）或三点一线（工作-饮食-休息）的作息习惯，使得她的生活状态在这二点或三点间切换、转换、跳变、波动。也正是这种迷人的波动令人心动。我喜欢她的作息规律；喜欢她的勤俭节约（关机）；喜欢她的安静和芬芳。\n\n根据记忆中所有与她接触（并非只有文中提到的这些）的相关样本以及这些数据来看:She is the one。也许像着了魔一样，每次手环振动我都会想起她，甚至之后也无法忘却。\n\n智控老师在讲到反应型和深思型人工智能时谈到“......这就像是追女孩子——喜欢就去追啊！难不成还思前想后制订好万无一失的计划！到时黄花菜都凉了......”我成功地加了她的微信、她的QQ、她的支付宝，关注了她的微博。看了她的空间、她的朋友圈、她的微博。\n\n看着她发的旅游照片，她保存的美食、励志、工具文章等，我发现越是了解她也就越是喜欢她。那一段时间真的是挺快乐！\n\n但，这些都不重要了。那一次是21:00，并未想过会与其不期而遇的我站在电梯前，当手环振动时，我心想“不会吧”，然后刚一回头就看到她来到我身边。我们一起走向宿舍，她说她要结婚了。最终“她像天使一样美丽，又像流星一样一闪而过”。\n\n以上纯属虚构，哈哈自娱自乐，欢迎大咖follow我",
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