告别月光族 理财软件&工具新年大推荐

俗话说,“你不理财,财不理你“,很多朋友可能都清楚自己的收入,但却不知道自己的消费和支出,所以每个月下来都是“月光族“。这就是由于头脑中没有“理财“的概念引起的,在新的一年开始时,我们有必要共同来探讨一下个人理财的问题,广义的理财不但包括财产资金的管理,还包括利用现在的资金“生财“,但是由于投资顶目有风险,各行各业差别也很大,因此在市专题中,我们主要探讨狭义的理财,那就是对资金的管理,让账目更明确,让消费更理性,日常生活中不但要开源,更要节流,用心理财,你才能做到“心中有账,手里有财“,从此告别“月光族“!     

评刊

《数码摄影》创刊于新世纪,是本年青的杂志,有年青的感觉,年青的朝气,也有年青的躁动。杂志是智者,面对是朋友,所以我喜欢看各种杂志的卷首语,如沐春风,如听秋雨,有所闻,有所感,很难得,张韬也好,登登也好,如能再精深一些,配图收录会是很不错的图文集。     

家用车的逆袭——铃木雨燕全面改装密

正提到代步车这个词,可能很多人都会说出无数的车型,这其中就包括了早在2005年就上市的雨燕,它来自日本的小型车专业户铃木,对于当时的消费者来讲,雨燕有着得天独厚的优越条件,靓丽的外形以及超级别的配置,唯有那台G13B引擎多少有些拿不出手,不过小MINI的称号依旧换来了相当多的支持者,随着小改款的推出,引擎也从落后于时代的G13B换成了相对先进的M15A,双顶凸轮轴加上VVT,这些足以进入精品小型车的行列,将它视为改装对象的人也越来越多。用心修饰性格巨变和众多A0级小车相比较而言,雨燕的外观还是属于相当温顺的,甚至多少有些可爱,对于喜欢这种性格的女生来讲,的确是再合适不过了,不过对于那些喜欢追求速度和与众不同的男生来讲,就未必合适了,不过好在雨燕的可塑性还是很高的,通过了一些相当用心的手段进行修饰之后,一番凶悍的景象还是得到了良好的呈现,随着外观的变化,     

魔兽·社会·人

一个警察玩魔兽,后来殉职,有玩家在游戏里为他组织了葬礼,很多战友前来祭拜。重庆一个魔兽公会的会长在网上卖号,打算凑两三千块钱给妻子治病,结果无数玩家慷慨解囊。还有一些让人哭笑不得的妙人。比如三季稻,人称三哥,他是国服里的一个传奇人物,独来独往,专杀小号。他不参加任何公会,也不参加任何活动,没有人知道他的真实身份。有个联盟玩家给自己的ID起名叫部落不是东西,然后到处躲避部落的追杀,历尽艰辛,乐此不疲。还有一玩家一根筋要当大奸商,不练级,不打怪,只是在不同种族之间倒买倒卖,囤货居奇,最终控制整个服务器的经济命脉。其实,游戏和现实世界一样.不管是谁,总有点追求。在《魔兽世界》里,有人求升级,有人求装备,有人享受打到BOSS的过程,有人追求领导公会的快感,但也有BJ这样的游侠——他最大的乐趣是发掘游戏里面各种稀奇古怪的地方。他会一个人去爬山、游泳、客串做奸商,躲在没人的地方钓鱼,或者和小妹妹在山顶看日出。为了抓一只宠物,他可以在树下连续盯上40多个小时,如痴如醉,跟谈恋爱一样。走出游戏,又觉得自己很傻。BJ今年33岁,是一个程序员,家住南京,有家庭,有事业,热爱生活。     

读者来函

办刊的初衷未变在四月前,我是决不会向杂志社回寄问卷调查,我一向认为,回函很多.我的一份声音很可能会被众多声音淹没,因而没寄。后来在好奇心的驱使下,我做出常识,结果便打破了固有的看法,消除了顾虑,我的建议被考虑甚至是被采纳了,这是对于我的回函的肯定,所以我从此期期回寄。令我欣喜的是,我幸运成为8月号的中奖者,并于昨晚收到奖品,在此表示我由衷的谢意!     

网络谱写轻松传奇

高楼万丈平地起,在网络化和电子商务的时代,信息系统最重要的基础设施包括各种服务器和终端,以及网络设备等。它们是实现办公自动化的先决条件。有了这些设备,您每天坐在PC前,用鼠标指指点点,就可以完成各种日常工作,远到合作伙伴,近至邻桌同仁,不分时间和地点,可以随时沟通。因此,您的方案和计划,通过服务器,得以准确地展现,通过网络,得以快速地发送,最终得到完美地实现。的确,现代办公让人拥有从未有过的巨大能力,不由您赞叹现代办公的魅力和轻松!IT的发展日新月异,促使您的办公也越来越轻松。下面,让我们走到信息系统的后台,看看里面发生了什么变化。     

站在更高起点

品牌、广告、LOGO;视觉、形象、感性。当读图时代不可避免地到来,企业的形象识别,已跳离了标志的属性,无不关乎企业品质,俨然成为企业的精神图腾和价值地图。在消费时代,并不缺乏视觉饕餮,但是,我们觉得,珍馐美馔,更适合用细嚼慢咽的方式,来咂摸滋味,吸取营养。以后每周,我们将奉上一道精心烹饪的视觉大菜,色、香、味、营养,一应俱全。当然我们也希望您,把让自己齿颊留芳的菜品,写一纸小文,推荐给我们,与更多的读者分享。     

来吧！属于Geek的黄金周

今年的国庆长假,加上中秋节,黄金周长假多达8天!如果再加上年假、婚假等各种假期,真是想想都美啊!金秋是一年最适合出行的季节,这个季节里,许多地方展现的是一年中仅此一次的美好,大自然似乎要把全部力量都用在这个季节,然后再进入冬天的休养,于是,到处都呈现着五彩斑斓的美景。收获的霞浦,繁忙的涠洲岛,塞上的草原,婺源的红叶,拉萨河畔的秋风,梅里雪山的冰峰,还有广袤的大漠,春华秋实,哪种美景更让你倾心？     

无限延伸的音乐 深圳车乐汇改英菲尼迪

正工作的繁忙,城市的喧哗,生活的紧压,总会让我们不经意间忘记享受,忘记享受音乐,忘记音乐带来的快乐,忘记音乐给生活带来的意义。人生就像一场不知道终点的赛跑,一味的狂跑只会错过沿途美丽的风景,适时的放慢脚步,美丽的风景就会陪伴左右,悄悄的关上车门,将繁杂的世俗拒之门外,播放喜爱的音乐,这时,终点其实已经在你眼前,用自己喜欢的声音为到达终点而欢呼,用音乐取悦自己的耳朵,用音乐缓解生活的压力,假如你     

愈强愈精英 商务赛亚人大变身

喜欢漫画的朋友相信都知道赛亚人,这个《七龙珠》中的战斗民族,从骨子里就留着好战的血液,他们越战越强,当他们突破极限,就成为超级赛亚人,拥有世界上最强大的战斗力,是最强的勇士。商务精英的追求无止境,他们同样向往胜利,期待成功。当他们获得神秘的武器时,仿若变身成为商务赛亚人,拥有更强、更快、更高的能量。让工作更高效,让成功更快捷。     

一种适用于嵌入式系统的P2P下载模型*

提出了一种基于BitTorrent协议的嵌入式BT下载模型。该模型对BitTorrent思想进行了深化和应用,针对于快速BT网络,在嵌入式系统应用中进行了改进,有效提高了下载速度,甚至可以在嵌入式系统上快速下载多媒体视频文件进行播放。     

IP组播在BitTorrent中的应用研究

针对BitTorrent(BT)应用会占用大量网络带宽的问题,通过改进BT协议,提出一种应用IP层组播技术优化传输的MBitTorrent(MBT)协议。该协议引入基于区域和优先级的Peer阻塞策略,适用于组播域分离的网络环境。仿真结果表明,与BT协议相比,MBT显著降低了网络流量,提升了整体下载性能。     

BitTorrent协议Choking／Unchoking机制的度量和分析

BitT0rrent是一个用于内容分发的P2P协议,现在已经发展成为互联网的一项重要的应用.本文从性能的角度,度量BitTorrent的行为,解释BitTorrent协议的关键元素,分析BitTorrent是否是高效的.本文有以下贡献:①提出一种有效度量BitTorrent式的内容分发协议的方法.②确认BitTorrent的Choking/Unchoking机制存在缺陷,不是高效的.③设计ShareStorm协议,证明BitTorrent的缺陷可以避免.经初步验证,在下载完成时间这个最主要的性能指标上,ShareStorm比BitTbrrent至少减少50 %.     

一种基于Netfilter的BitTorrent流量测量方法

BitTorrent是目前互联网上广泛使用的一种基于P2P的文件共享协议。它使用了动态端口,这给BitTorrent流量的准确测量带来了很大的困难。本文在分析BitTorrent协议基础上,给出了一种基于应用层特征匹配的BitTorrent流量测量方法。首先提取出BitTorrent流的应用层特征,利用Linux Netfilter／Iptables扩展架构实现数据包的应用层特征匹配。将TCP流分成了BitTorrent流和非BitTorrent流,对BitTorrent流进行统计。实验表明,该方法能实时准确地测量BitTorrent流量。     

PS2P网络中视频点播系统的设计与实现*

结合视频点播应用的具体需求,对BitTorrent协议中的分片选择策略、激励机制进行改进,并融合媒体服务器对资源的下载支持,实现了基于PS2P的视频点播系统HyBT。性能分析表明,HyBT能在保证音/视频内容高速传输的前提下,减少点播缓冲时间,使音/视频内容流畅播放,让用户获得良好的视听体验和服务质量。     

Enhancing tit-for-tat for incentive in BitTorrent networks

BitTorrent achives great success in its high performance for file distribution. It is commonly believed that this owes to Tit-for-Tat strategy adopted in choking algorithm for incentive in BitTorrent protocol. But there are still many issues in incentive mechanism in BitTorrent. In this paper, we study Tit-for-Tat strategy by constructing a game model in P2P environments and deducing the constraint under which the strict Tit-for-Tat is an equilibrium strategy. We then enhance and adapt the Tit-for-Tat strategy to the dynamic property in P2P networks, and deduce the constraint under which it is still an equilibrium strategy. We also study through simulations the performance improvement of the enhanced Tit-for-Tat, and give suggestion on how to choose proper system parameters under different network conditions. Finally, based on the enhanced Tit-for-Tat strategy, we propose a method to improve incentive in BitTorrent networks to cope with free-riding and fairness issues.     

WuKong: a practical video streaming service based on native BitTorrent and scalable video coding

Many researches on peer-to-peer video streaming have focused on dealing with highly dynamic, high-churn P2P environment. Most of P2P streaming protocols were modified from a P2P file sharing protocol. Inspired by the high performance on peer-to-peer file sharing of BitTorrent, we propose an overlaying streaming mechanism on the native BitTorrent protocol and realize a practical P2P video streaming service, called WuKong. WuKong not only takes advantages of BitTorrent but also combines the video scalability of layered video coding. In this paper, we depict an overlaid streaming mechanism in WuKong and an adaptive layer-downloading process to balance between the video quality and bandwidth utilization on heterogeneous peers. WuKong is carried out by using an open-sourced library of the BitTorrent protocol, coding schemes of the Windows Media Video (WMV), and the Scalable Video Coding (SVC). We measured and compared the service quality of end-users served by WuKong on heterogeneous peers. In addition, we evaluated the effectiveness of WuKong with peers that are randomly joining and leaving the P2P network. The results show that WuKong not only provides high quality P2P video streaming services but also supports different scaling abilities over heterogeneous devices.     

BitTorrent网络主动测量技术与特性分析*

对BitTorrent进行了系统的研究,详细阐述了一种用于测量BitTorrent网络拓扑的爬虫设计与实现,并通过主动测量所获取的信息分析研究了BitTorrent的网络节点分布情况、在线节点周期特性、扩散跟踪、做种节点变化趋势,研究结果为BitTorrent网络的监管提供了良好的依据。     

BitTorrent packet traffic features over IPv6 and IPv4

At present, BitTorrent protocol packets constitute a large part of peer-to-peer application traffic on the Internet. Due to the increasing amount of BitTorrent traffic, it has become inevitable to take into account its effects on network management. Generally, studies on BitTorrent traffic measurement have involved analysis with packets transmitted via IPv4 protocol. However, with several facilities provided by IPv6 protocol, its traffic volume in operational networks is increasing day by day. New features of IPv6 enhance packet processing speeds over routers, switches and end systems. We consider that traffic features and packet traffic characteristics are likely to be affected with increasing amount of IPv6 protocol traffic. Therefore, it becomes significant to explore IPv6 packet traffic characteristics and application traffic features over IPv6. In this study, we investigate the IPv6 BitTorrent packet traffic characteristics in terms of autocorrelation, power spectral density and self similarity of packet size and packet interarrival time. We also perform distribution modeling for IPv4 and IPv6 BitTorrent packet traffic. With these models, efficient packet traffic traces are generated for network simulation studies. A detailed comparison is performed to determine differences between IPv4 and IPv6 BitTorrent packet traffic.     

Downloading trace study for BitTorrent P2P performance measurement and analysis

With the increasing client population and the explosive volume of Internet media content, the peer-to-peer networking technologies and systems provide a rapid and scalable content distribution mechanism in the global networks. The BitTorrent protocol and its derivatives are among the most popular peer-to-peer file sharing applications, which contribute a dominant fraction of today??s Internet traffic. In this paper, we conduct the performance measurement and analysis of BitTorrent systems with an extensive volume of real trace logs. We use several downloading-side metrics, including overall downloading time, maximum of downloading bandwidth, average bandwidth utilization, maximum of downloading connections, and average number of active connections, to derive various interesting results from the downloading-side aspect of network resource usage. Performance examination learns many new observations and characteristics into the virtue of BitTorrent protocols and systems, thereby providing beneficial information for bandwidth allocation and connection control in BitTorrent client applications. Therefore, this study is complementary to many previous research works that mainly focused on system-oriented and uploading-side performance measurements.