科学网

 找回密码
  注册

tag 标签: time

相关帖子

版块 作者 回复/查看 最后发表

没有相关内容

相关日志

When a speaker goes over time...
热度 1 zuojun 2012-9-20 13:40
Who's fault is it? I am not talking about going over time for 5-10 mins. I am talking about going over time for more than 20 mins! The speaker should respect his audience, so should the seminar chair. When it's one-hour seminar, the speaker should leave 15 mins for the audience. If you cannot do that, then at least do not go beyond one hour...
个人分类: Thoughts of Mine|2808 次阅读|1 个评论
It's all about timing!
热度 2 zuojun 2012-7-19 02:09
Someone needs work done fast, and someone needs work. I am six hours ahead of my clients in China, and my subcontractor on the east coast is six hours ahead of me. For the first time, I am really enjoying the time difference!
个人分类: Uniquely Hawaii|2822 次阅读|4 个评论
Enjoy your long hair
热度 1 zuojun 2012-7-11 02:51
For a long time, I had long hair, because it's easier (and cheaper) to maintain. Then, in summer 2010 I was forced to get a fashionable short haircut in Qingdao. I was glad to have short hair in hot summer in China, which also made washing easier. But, the cost to maintain it is high (if you go to a decent hair salon in Kahala). Yesterday, a friend reminded me what we looked when we were younger, seven years younger, by sending me a picture taken at the Pali Lookout in 2005. OMG, I for the first time wish I had long hair.
个人分类: Uniquely Hawaii|2719 次阅读|3 个评论
The value of time 时间的价值
whm669 2012-4-27 16:37
Whenaskedabouttime,themajorityofpeople think thattimeisthemost valuablethingintheworld.Ifwehaveplentyoftime,wecanturnalot ofideasintoreality.Nevertheless,withouttime,wecandonothingeven ifwehaveathousandbetterideas. Inrecentyears,therearegreatchangesinpeople'slife.Foodandclothes arenotanylongerthekeyproblemconcerned.Mostfamilieshavemoved intoflatswith200m 2 orso,andfamilycarsarebecominggeneraltraffic tools.AllthesechangesspentChinesepeopleabout30years,andmany scientistsspentevenalltheirlivesonresearchwork.So,wealthis valuable,buttimeismorevaluablethanwealth. Inordertoturnourcountryintoawealthierandstrongeroneinthe future,andguaranteethecominggenerationlivemorehappily,wemust cherishthepresenttime,anddoourutmosttostepintoabetterperiod. Wearefacingmanyproblems,suchasenergy,environment,safetyandthe qualityoflifeetc,whicharegoingtocostmuchtime.Timemeans productstoworkers,harveststofarmers,lifetodoctors,profitto businessmen,knowledge,intelligenceandabilitiestochildren.So, everyonemustnotwasteanytime.Wecandefinitelygetsomethingifwe havespent time in doing something. Asthesayinggoes,timeisgold,butit'sdifficultforyoutogettime withgold.Timeislimitedforeachperson.Let'senjoyourtime,anddo ourbesttomaketheworldbetter. 说起时间,大多数人认为时间是世界上最宝贵的东西。如果我们有足够的时间, 我们可以把很多理想变成现实。但是,如果没有时间,即使我们有一千种更好的想法, 也一事无成。 近些年来,人们的生活发生了巨大变化。吃穿不再是人们关心的首要问题,很多 家庭已经迁居200平米左右的套房,家庭汽车也日渐成为主要交通工具。所有这些变化 花费了中国人民约30年时间,很多科学家甚至花费了一生的时间做研究工作。所以, 财富是宝贵的,时间比财富更珍贵。 为了把我们的国家变得更加富强,为了确保下一代生活得更加幸福,我们必须珍惜 当前的时间,尽力迈进更好阶段。我们面前还有很多问题,例如,能源 问题 ,环境 问 题 ,安全和生活质量问题等等,解决这些问题都需要花费很多时间。时间对于工人来 说就是产品,对于农民来说就是丰收,对于医生来说就是生命,对于商人来说就是利 润,对于孩子们来说就是知识、才智和能力。所以,人人都不能浪费时间,只要我们 付出时间去做一些事情,我们总会有收获的。 俗话说得好,“一寸光阴一寸金,寸金难买寸光阴”。每个人的时间都是有限的, 让我们好好享用我们的时间,尽量把这个世界变得更好。
个人分类: 观点|2422 次阅读|0 个评论
You Don’t Cite Me Anymore --- 恭喜老马的PRL上首页~~
热度 4 zico 2011-12-3 12:11
【介绍一下】:老马是我师兄,数学出生,灰常牛,球也踢的很好~~ 原文地址:http://physics.aps.org/synopsis-for/10.1103/PhysRevLett.107.238701 Synopsis: You Don’t Cite Me Anymore M. Medo et al. , Phys. Rev. Lett. (2011) Temporal Effects in the Growth of Networks Matúš Medo, Giulio Cimini, and Stanislao Gualdi Phys. Rev. Lett. 107 , 238701 (2011) Published December 1, 2011 Simple models of citation statistics assume that highly cited papers have a better chance of being cited in new papers. However, this preference does not last very long, as evidenced in a new study in Physical Review Letters that examines data from American Physical Society (APS) journals. The authors show that citation models perform better when they account for the way the relevance of a paper decays with time. As scientists well know, not all papers get cited equally. An often-cited work typically attracts more citations, reflecting the economic maxim of “the rich get richer.” This so-called preferential attachment should yield a smooth power-law distribution in the number of citations to each paper, but literature studies reveal a greater complexity, in part because papers age. Classic treatises from Einstein or Hawking, for example, are no longer cited as they once were. The same is true for other growing networks like the internet, where old web pages attract fewer and fewer links. Matúš Medo and his colleagues from the University of Fribourg in Switzerland sought to address this age-dependence. They first investigated the citation statistics of 450,000 papers from APS journals that were published between 1893 and 2009. They found that a paper’s relevance—defined by how many new citations it receives over a given period—decreases dramatically a few years after its publication. By introducing a decaying relevancy factor, the team produced a generic model that could fit a wide variety of network behavior, including the citation distribution of papers from APS journals. – Michael Schirber
个人分类: 科研笔记|4896 次阅读|7 个评论
[转载]怎样提高自己的学习效率?成为一个不折不扣的时间管理专家
jiangdm 2011-11-21 15:55
怎样提高自己的学习效率 ? 成为一个不折不扣的时间管理专家 一个人的成就取决于他的行动。同时我认为一个人的成就跟他时间管理的能力成正比。 很多人时间管理做不好,因为他不够忙。时间管理好的人,第一个现象就是忙,整个人开始忙碌起来,不是瞎忙,而是很有效率的忙。 时间管理的目的是为了要达成你的目标,所以假设一开始目标没有设定好,计划没有拟定详细,事实上时间管理的效率已经不理想了。 成功就是每天进步 1% 。当你每天学习一点,行动一些,把计划做得越来越详细,不断地做检讨,你就会每天进步一点,慢慢步入成功。 时间就是生命,掌握时间就是掌握生命! 一个人的成就决定于他 24 小时做了哪些事情。时间管理的重点在于如何分配时间,在每一分每一秒都最有生产力的事情,在更短的时间达成更多的目标。书中同样用大量实践的心得分享了最棒的时间管理的十个关键。 现在,我们来学习做好时间管理的十个关键: 1 、第一关键:要有明确的目标 上次我们演习时,已经明确过每个人的目标。现在还是请你拿出纸和笔,在这张纸上,写出你明确的目标。 如果你没有明确的目标,那时间是无法管理的。 时间管理的目的,是让你在更短的时间达成更多你想要达成的目标。我们都知道成功等于目标,所以你愈能够把目标明确地设立好,依照我之前所分享的方法,你的时间管理就会愈好。 2 、第二关键:你必须要有一张“个人清单” 也就是你必须要把今年所要做的每一件事情都列出来。现在就把你要完成的每一件目标列出来,不光是主要的目标,还有一些小的目标要达成,也要把它列出来。 当你有“个人清单”之后,下一个你要做的是把目标切割。譬如为了达成今年的每一个目标,我上半年必须完成哪些事情?下一步就是把它切割成季目标。我这一季需要做哪些事情,全部列出来,如此再推出每一个月需要做哪些事情。 假设你没有办法有一个全年的“个人清单”,你至少从现在开始必须要有每个月的“月清单”。当然我们都知道一日之计不是在于晨,而是在于昨夜,所以在前一天晚上要把第二天要做的事情列出来。记住,你永远没有时间做每一件事情,但你永远有时间做对你最重要的事情。 当你列出来之后,把优先顺序排好,并且设定完成期限,这时你就已经迈向成功之路了。 3 、第三关键:也就是大家所熟悉的二十、八十定律,或八十、二十定律 你要把时间管理好,一定要知道哪些事情对你是最重要的,它赋予你最高的生产力。假如这些事情你不是很清楚,不是很了解,那你的时间管理永远不会很好。所以每一天必须花最多时间做那一件事情。 我个人一定会列出第二天要做的每一件事情,同时我会把这些事情分成小小的时段,这样我就可以百分之百地掌握我的时间了。 还有一点,就是运用视觉的力量。导致时间管理不好的原因通常就是拖延。当“马上行动”摆在你前面,你很明确地看着它,它就会刺激你的潜意识,进入你的脑海里,迫使你马上行动。所以你应该在你的书桌前面贴一个“马上行动”四个大字。 时间管理要做好,你就必须有一个明确而且详细的计划。计划愈详细愈容易管理,你也愈容易成功。 4 、第四关键:每天至少要有半小时到 1 小时的“不被干扰的时间” 假如你能有 1 小时完全不受任何人干扰,自己关在自己的房间里面,开始思考一些事情,或是做一些你认为最重要的事情,这 1 个小时可以抵过你 1 天的工作效率,甚至有时候这 1 小时比你 3 天工作的效率还要好。所以记住,不被干扰的时间至少要 30 分钟,最好的时间差不多是 60 分钟,也就是 1 个小时。 一般来讲,需要花 20 分钟才能让自己的头脑冷静下来,心定下来。假设只有 30 分钟,效率并不会太好。所以给自己 1 个小时的不被干扰的时间是非常有效的方法。 设定不被打扰的时间在早上,最好是起床的时候, 5 点到 6 点,这个时候,你一个人思考,尤其是你的头脑非常清楚,你会发挥非常非常大的力量。假如你这个时段没有办法做到,还有一个时间你可以试试,就是在中午吃饭的时间。或是在下午 3 点到 4 点的时候。我自己设立的时间则是在晚上回家之后。 5 、第五关键:你的目标和你的价值观要吻合,不可以相互矛盾。 你一定要确立你个人的价值观,假如价值观不明确,你就很难知道什么对你最重要。当价值观不明确的时候,你时间的分配一定不好。所以你一定要找一个时间把自己的价值观确定一下,什么对你才是最重要的?是健康、是事业、是家庭、是朋友,把它分配好。 记住,“时间管理”的重点不在于管理时间,而在于如何分配时间。 6 、第六关键:每天静坐一小时 你可以找一张椅子,就坐在那里,记住,一定要完全不受干扰,没有任何的音乐,没有任何的杂音,就一个人坐在椅子上。当然一开始的时候,你一定很想要动,那时候你就要鞭策自己不准动,直到满一小时。假设你每天能够静坐一小时,你工作的效率一定会提升。 7 、第七关键:所有的事情开始就把它做对 开始就把它做到完美,就把它做到最好,这样你就不需要重复去做同一件事情。 8 、第八关键:你必须控制你的电话时间 善于管理时间的人通常是由他的秘书帮他查询到底是谁打电话来,或是请他留言。留言时必须记住什么时间回电是最好的时机,不然你打电话过去,他又不在,徒劳无功。一般来讲,把电话积累到某一个时间,一次把它全部打完。 9 、第九关键:同一类的事情最好一次把它做完 当你重复去做同一件事情,你会熟能生巧,因此你的效率一定会增加 。 10 、第十关键:做“时间日志” 你花了多少时间在做那些事情,把它详细抵记录下来,每天做了什么,一一记录下来。你会发现,哎呀!浪费那么多时间。当你找到浪费时间的根源,你才有办法改变。 接下来,我们来学习做好时间管理最重要的四个秘诀: 1 、 第一秘诀:做最有生产力的事情 我把这句话“在每一分,每一秒都要做最有生产力的事情”贴在我的书房里,我发现我的时间管理的确有进步,同时也因为这句话的影响,我在 27 岁时,也成了亿万富翁。所以,请你也和我一样,把这句话贴出来,时刻提醒自己每一分、每一秒都要做最有生产力的事情。 2 、第二秘诀:“时间大于金钱” 用你的金钱去换取别人的成功经验,这是比较快的方式。 3 、第三秘诀:花最多时间做最重要可是不紧急的事情成功 我们常谈到时间管理,有所谓紧急的事情、重要的事情,然而到底应该先做哪些事情?当然第一个要做的一定是紧急又重要的事情。通常这些都是一些迫不及待要解决的问题。当你天天处理这些事情的时候,表示你的时间管理并不是那么的理想。 成功者花最多的时间在做最重要、可是不紧急的事情,这些都是所谓的高生产力的事情。然而一般人是做紧急,但不重要的事情。你必须学会如何把重要的事情变得很紧急,这时你就会立刻开始做高生产力的事情了。 4 、第四秘诀:你一定要跟顶尖的人士学习 每一个成功人士都是跟之前成功的人士学习,这几乎没有什么例外。你跟什么人接触,你的想法就会跟他接近,所以千万要仔细抵选择你所接触的对象,因为这会节省你很多时间。 假如你跟一个成功者在一起,他花了 40 年成功,你跟 10 个这样的人在一起,你是不是就浓缩了 400 年的经验?这不是时间管理,那什么才叫做时间管理呢? 一旦掌握了时间管理的秘诀,你会发现自己做事的效率竟然会这么好,你终于有了更多的时间来做自己真正想做的事情。这美好的一切都来自于你彻底的实践学到的每一个方法,从今天开始你将成为一个不折不扣的时间管理专家。
个人分类: PhD road|0 个评论
只有时间
热度 6 BlueAdagio 2011-10-26 04:29
只有时间
Enya是我最喜爱的女音乐人之一,她的作品凄美空灵,而且永远保持着一份浓郁的爱尔兰风情和忧郁。据说为了制造音乐里她的声音的那种独一无二的效果,每唱一首歌她都会录几十遍,然后她专用的录音师再一层一层把声音叠加起来。 在有歌词的作品里,我最喜欢她的Only Time,还曾经试着把它翻译成中文(歌词和译文以及MV链接在下面)。这首歌收录在Enya2000年出版的A Day without Rain里,当时非常流行,记得后来911事件发生后相当长一段时间,美国的电台电视里放得最多的可能也是这首歌。 有些感情,需要时间的沉淀。有些创伤,需要时间来埋葬。有些难题,只有时间知道答案。 音乐链接: http://www.enya.com/videos.php?vid=k Only Time Who can say where the road goes where the day flows only time And who can say if your love grows as your heart chose only time Who can say why your heart sighs as your love flies only time And who can say why your heart cries when your love lies only time Who can say when the roads meet that love might be in your heart And who can say when the day sleeps if the night keeps all your heart Night keeps all your heart Who can say if your love grows as your heart chose only time And who can say where the road goes where the day flows only time Who knows - only time 只有时间 谁可以说出 路会通向何方 时光如何流淌 只有时间 谁又可以说出 爱会不会生根发芽 如你所愿 只有时间 谁可以说出 心为什么会叹息 当爱在飞逝 谁又可以说出 为什么心会哭泣 当爱已不再真实 只有时间 谁可以说出 在路相交的一刻 或者爱 已在你心中 谁又可以说出 当白天已经睡去 夜幕降临 你的心可以依然完整 夜幕里 心依然完整 谁可以说出 爱会不会生根发芽 如你所愿 只有时间 谁又可以说出 路会通向何方 时光如何流淌 只有时间 谁会知道- 只有时间 照片来源:enya.com
个人分类: 岁月如歌|4474 次阅读|10 个评论
[转载]10 Common Time Management Mistakes
chrujun 2011-4-20 21:48
10 Common Time Management Mistakes Avoiding Common Pitfalls http://www.mindtools.com/pages/article/time-management-mistakes.htm#np How well do you manage your time? If you're like many people, your answer may not be completely positive! Perhaps you feel overloaded, and you often have to work late to hit your deadlines. Or maybe your days seem to go from one crisis to another, and this is stressful and demoralizing. Many of us know that we could be managing our time more effectively; but it can be difficult to identify the mistakes that we're making, and to know how we could improve. When we do manage our time well, however, we're exceptionally productive at work, and our stress levels drop. We can devote time to the interesting, high-reward projects that can make a real difference to a career. In short, we're happier! In this article, we're looking at ten of the most common time management mistakes, as well as identifying strategies and tips that you can use to overcome them. These ten mistakes are: Mistake #1. Failing to Keep a To-Do List Do you ever have that nagging feeling that you've forgotten to do an important piece of work? If so, you probably don't use a To-Do List to keep on top of things. (Or, if you do, you might not be using it effectively!) The trick with using To-Do Lists effectively lies in prioritizing the tasks on your list. Many people use an A - F coding system (A for high priority items, F for very low priorities). Alternatively, you can simplify this by using A through D, or by using numbers. If you have large projects on your list, then, unless you're careful, the entries for these can be vague and ineffective. For instance, you may have written down "Start on budget proposal." But what does this entail? The lack of specifics here might cause you to procrastinate, or miss key steps. So make sure that you break large tasks or projects down into specific, actionable steps - then you won't overlook something important. You can also use Action Programs to manage your work when you have many large projects happening at once. (Action Programs are "industrial strength" versions of To-Do Lists.) Mistake #2. Not Setting Personal Goals Do you know where you'd like to be in six months? What about this time next year, or even 10 years from now? If not, it's time to set some personal goals! Personal goal setting is essential to managing your time well, because goals give you a destination and vision to work toward. When you know where you want to go, you can manage your priorities, time, and resources to get there. Goals also help you decide what's worth spending your time on, and what's just a distraction. To learn how to set SMART, effective goals, read up on Locke's Goal Setting Theory . Here, you'll learn how to set clearly defined goals that will keep you motivated. You might also enjoy our Book Insight into " Long Fuse, Big Bang " by Eric Haseltine. This book teaches you how to focus on your long-term goals without overlooking your short term priorities. Mistake #3. Not Prioritizing Your assistant has just walked in with a crisis that she needs you to deal with right now, but you're in the middle of brainstorming ideas for a new client. You're sure that you've almost come up with a brilliant idea for their marketing campaign, but now you risk losing the thread of your thinking because of this "emergency." Sometimes, it's hard to know how to prioritize , especially when you're facing a flood of seemingly-urgent tasks. However, it's essential to learn how to prioritize tasks effectively if you want to manage your time better. One tool that will help you prioritize effectively is the Urgent/Important Matrix . This helps you understand the difference between urgent activities, and important activities. You'll also learn how to overcome the tendency to focus on the urgent. The Action Priority Matrix is another useful tool, which will help you determine if a task is high-yield and high-priority, or low-value, "fill in" work. You'll manage your time much better during the day if you know the difference. You might also want to go through our Bite-Sized Training Class, How to Prioritize , to further enhance your skills. Mistake #4. Failing to Manage Distractions Do you know that some of us can lose as much as two hours a day to distractions? Think how much you could get done if you had that time back! Whether they come from emails, IM chats, colleagues in a crisis, or phone calls from clients, distractions prevent us from achieving flow , which is the satisfying and seemingly effortless work that we do when we're 100 percent engaged in a task. If you want to gain control of your day and do your best work, it's vital to know how to minimize distractions and manage interruptions effectively. For instance, turn off your IM chat when you need to focus, and let people know if they're distracting you too often. You should also learn how to improve your concentration , even when you're faced with distractions. Additionally, our article on managing email effectively teaches you how to gain control of your email, so that it doesn't eat up your entire day. Mistake #5. Procrastination Procrastination occurs when you put off tasks that you should be focusing on right now. When you procrastinate, you feel guilty that you haven't started; you come to dread doing the task; and, eventually, everything catches up with you when you fail to complete the work on time. Start by taking our Procrastination Quiz to find out if procrastination is a problem in your life. If it is, then learn the strategies you need to beat procrastination . For instance, one useful strategy is to tell yourself that you're only going to start on a project for ten minutes. Often, procrastinators feel that they have to complete a task from start to finish, and this high expectation makes them feel overwhelmed and anxious. Instead, focus on devoting a small amount of time to starting. That's all! You might also find it helpful to use Action Plans . These help you break large projects down into manageable steps, so that it's easy to see everything that you need to get done, and so that you can complete small chunks at a time. Doing this can stop you from feeling overwhelmed at the start of a new project. Tip: Our Bite-Sized Training session, Overcoming Procrastination , gives you more in-depth strategies and tips for dealing with procrastination. Mistake #6. Taking on too Much Are you a person who has a hard time saying "no" to people? If so, you probably have far too many projects and commitments on your plate. This can lead to poor performance, stress, and low morale. Or, you might be a micromanager : someone who insists on controlling or doing all of the work themselves, because they can't trust anyone else to do it correctly. (This can be a problem for everyone - not just managers!) Either way, taking on too much is a poor use of your time, and it can get you a reputation for producing rushed, sloppy work. To stop this, learn the subtle art of saying "yes" to the person, but "no" to the task . This skill helps you assert yourself, while still maintaining good feelings within the group. If the other person starts leaning on you to say "yes" to their request, learn how to think on your feet , and stay cool under pressure. Mistake #7. Thriving on "Busy" Some people get a rush from being busy. The narrowly-met deadlines, the endless emails, the piles of files needing attention on the desk, the frantic race to the meeting... What an adrenaline buzz! The problem is that an "addiction to busyness" rarely means that you're effective, and it can lead to stress. Instead, try to slow down, and learn to manage your time better. Tip: "Do More Great Work", by Michael Bungay Stanier, is full of ideas and tips to reduce the "busywork" that you're doing, so that you're more excited and engaged in the work that matters. Click here for our Book Insight on it. Mistake #8. Multitasking To get on top of her workload, Linda regularly writes emails while she chats on the phone to her clients. However, while Linda thinks that this is a good use of her time, the truth is that it can take 20-40 percent more time to finish a list of jobs when you multitask, compared with completing the same list of tasks in sequence. The result is also that she does both tasks poorly - her emails are full of errors, and her clients are frustrated by her lack of concentration. So, the best thing is to forget about multitasking , and, instead, focus on one task at a time. That way, you'll produce higher quality work. Our Expert Interview with Dave Crenshaw, looking at The Myth of Multitasking , will give you an enlightening look at multitasking, and will help you explore how you can manage simultaneous projects more effectively. Mistake #9. Not Taking Breaks It's nice to think that you can work for 8-10 hours straight, especially when you're working to a deadline. But it's impossible for anyone to focus and produce really high-quality work without giving their brains some time to rest and recharge. So, don't dismiss breaks as "wasting time." They provide valuable down-time, which will enable you to think creatively and work effectively. If it's hard for you to stop working, then schedule breaks for yourself, or set an alarm as a reminder. Go for a quick walk, grab a cup of coffee, or just sit and meditate at your desk. Try to take a five minute break every hour or two. And make sure that you give yourself ample time for lunch - you won't produce top quality work if you're hungry! Mistake #10. Ineffectively Scheduling Tasks Are you a morning person? Or do you find your energy picking up once the sun begins to set in the evening? All of us have different rhythms, that is, different times of day when we feel most productive and energetic. You can make best use of your time by scheduling high-value work during your peak time, and low-energy work (like returning phone calls and checking email), during your "down" time. Our article, Is This a Morning Task? will teach you how to do this. Key Points One of the most effective ways of improving your productivity is to recognize and rectify time management mistakes. When you take the time to overcome these mistakes, it will make a huge difference in your productivity - and you'll also be happier, and experience less stress!
个人分类: 转载精品|2508 次阅读|0 个评论
What the heck are B.C. and A.D.?
zuojun 2010-12-16 07:36
Answer: It is commonly thought that BC stands for before Christ and AD stands for after death. This is only half correct. How could the year 1 B.C. have been before Christ and 1 A.D. been after death? BC does stand for before Christ. AD actually stands for the Latin phrase anno domini which means in the year of our Lord. The B.C. / A.D. dating system is not taught in the Bible. It actually was not fully implemented and accepted until several centuries after Jesus' death. It is interesting to note that the purpose of the BC / AD dating system was to make the birth of Jesus Christ the dividing point of world history. However, when the B.C. / A.D. system was being calculated, they actually made a mistake in pinpointing the year of Jesus' birth. Scholars later discovered that Jesus was actually born in around 4-6 BC, not 1 AD. That is not the crucial issue. The birth, life, ministry, death, and resurrection of Christ are the turning points in world history. It is fitting, therefore, that Jesus Christ is the separation of old and new. BC was before Christ and since His birth, we have been living in the year of our Lord. Philippians 2:10-11 , That at the name of Jesus every knee should bow, in heaven and on earth and under the earth, and every tongue confess that Jesus Christ is Lord, to the glory of God the Father. From http://www.gotquestions.org/BC-AD.html Blogger: So, scientists have lost in terms of the world's dating system.
个人分类: Thoughts of Mine|2449 次阅读|1 个评论
Time is blue
FSD 2010-6-22 11:33
Onthe bank of River Rhine I stood Blue was the distant forest I saw across the river in the opposite side From the Rhine to Ethiopian highland I traveled from the future to the past Time is blue Memory is in mist
个人分类: 未分类|2586 次阅读|0 个评论
This bank is not that bank
zuojun 2010-6-4 04:56
Everybody knows what a bank is, right? Wrong! At least I didn't know what a time bank was until a few minutes ago... A few weeks ago, I contributed to a food bank . And this morning, I walked past a blood bank booth.
个人分类: From the U.S.|3571 次阅读|0 个评论
Time is money. Save it!
xupeiyang 2010-5-26 07:15
http://www.transinsight.com/ Time is money. Save it! Transinsight provides solutions for intelligent semantic searching. Our Enterprise Semantic Intelligence product suite covers all corporate search and information handling needs of small and medium size companies up to multinational enterprises like BASF, Unilever, Roche, Statoil and RWE. Profit from the advances of Transinsight's Semantic Access and Storage Architecture and save up to 90% of your valuable time. Discover values through better accessing data and determine hidden knowledge through exceptional semantic indexing and unparalleled navigation. Improve fact-finding with federated semantic enterprise wide search and benefit from integration of structured and unstructured data. Learn more about Transinsight's Enterprise Semantic Intelligence Knowledge Suite .
个人分类: 信息资源|1470 次阅读|0 个评论
时间管理的基本认识
热度 1 ericsimon 2009-12-7 19:18
时间管理的基本认识 时间管理是一个人生的大课题。关注时间管理一段时间了,自己的时间管理还是做得不太好,虽然肤浅,但还是写出来整理一下思路。 时间管理博大精深,无论是1-5代的时间管理、精力管理、生命管理、FTF、GDT等等,不同流派不同说法,我曾经也追求这些东西,也用过些工具,但最后发现:最前沿的理念,最先进的工具亦不过如此,关键是把最基本、最简单的践行! 首先介绍个人对时间管理的一些认识: 一、 首先需要认识时间的重要性。 珍惜时间就是珍惜生命,我的对时间管理的理念比较简单: 活,就要活得精彩,活得痛快!不要浑浑噩噩就过了一生。有些名人用时间同金钱作比较,用年薪除以自己的工作时间,得到每分钟的价值,以强调它的重要性,但这一点我不敢苟同。 二、 不要以为做计划就是限定死自己的生活 我以前一直觉得,做计划好像限定死自己的生活,但其实时间管理就是对生命的管理,做好计划其实是在有限时间内提高生活的质量和工作质量等:如:缺乏计划,一个宝贵的周末就可能毁于长期形成的习惯,在无聊乱点网页或看一天电视,在这里并不是否定 上一天网或者看一天电视不好,毕竟每个人的价值观不同,但我敢肯定,你一定有比乱点了一天网页更喜欢做的事,即使你说我就喜欢这样。 一个好的计划能让你能让你克服惰性,或者更好地去享受周末去做自己认为更有意义或者更大乐趣的事甚至很久前就想去做的事! 三、 不要以为管理时间会破坏你悠闲的日子 时间管理其实就是更好地安排你的生活和工作,卓有成效地完成你要做的事,更好的安排你娱乐的优先次序,才是你悠闲生活的开始!对于不喜欢快节奏的人要注意,时间管理不是要求你匆忙完成计划里的一堆事,这是很多人犯的错,真正的时间管理是允许你耍太极的,只要你抓大放小,力求成效。做得更少不一定是坏事,只要你遵循20/80。 四、 时间管理从最简单的执行开始 我曾经用思维导图整理了几页纸时间管理的几十种小方法,也使用过不少先进的工具,看过不少大师的论著,但还是老样子死性不改。后来发现, 我们需要的不是更厉害的武林秘笈,而是随手抓起一本,把里面的基本功练透,执行!关键是把最简单的几招练透 !至于用什么剑,练九阴真经还是葵花宝典,那是后来的事了。 广告时间: 以上我是对时间管理的肤浅认识,下集将会介绍时间管理的原则和最基本方法。
个人分类: 闲谈|2660 次阅读|0 个评论
“Nobel经济奖”与“时间序列分析”
zlyang 2009-11-2 21:54
最近跟风 Nobel Prize ,去 The Nobel Foundation 的官方网站 http://nobelprize.org 看了看,发现 Nobel 经济奖与时间序列分析有关系。 在 The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel 2003 里 写着: http://nobelprize.org/nobel_prizes/economics/laureates/2003/index.html for methods of analyzing economic time series with time-varying volatility (ARCH) Robert F. Engle III ( November 10, 1942 ) for methods of analyzing economic time series with common trends (cointegration) Clive W.J. Granger (September 4, 1934 May 27, 2009) 这两位得主都是研究 analyzing economic time series 的。所以采用复杂时间序列分析新方法进行经济学研究(属于经济计量学 econometrics ),是有可能获得诺贝尔经济学奖。 Robert F. Engle III 研究的是:自回归条件异方差 (autoregressive conditional heteroskedasticity) 。 Clive W.J. Granger 研究的是:共整合 (cointegration) 。 他还是组合预测( The combination of forecasts )方法的主要提出者之一。 参考文献 : Robert F. Engle, http://weber.ucsd.edu/~mbacci/engle/index.html Clive W.J. Granger, http://www.econ.ucsd.edu/~cgranger/ The combination of forecasts, with J. Bates, Operational Research Quarterly , 20, 1969, 451-468. http://dss.ucsd.edu/~cgranger/pubs.html 欢迎补充! 欢迎纠正本博文的任何错误! 相关链接: 《什么样的人品得到诺贝尔经济奖》 http://www.sciencenet.cn/m/user_content.aspx?id=265938
个人分类: 科研|3606 次阅读|0 个评论
时间序列表达数据分析工具
anny424 2009-9-11 18:30
参考文献: Microarray data analysis and mining approaches Francesca Cordero , Marco Botta and Raffaele A. Calogero Corresponding author: Raffaele A. Calogero, Department of Clinical and Biological Sciences, University of Torino, Italy. Briefings in Functional Genomics and Proteomics 2008 6(4):265-281; doi:10.1093/bfgp/elm034 Although two-sample differential expression analysis is probably the most common experiment, multi-series time-course microarray experiments are useful approaches for exploring biological processes. In these types of experiments, the researcher is frequently interested in studying gene expression changes over time and in evaluating trend differences between the various experimental groups . The large amount of data, multiplicity of experimental conditions and the dynamic nature of the experiments pose great challenges to data analysis. A comprehensive review of research in time series expression data analysis was published by Bar-Joseph in 2004 . Recently, maSigPro Conesa has published two methods for time-course microarray data analysis . One is maSigPro , and is part of Bioconductor packages. ...This will ultimately be used to find what are the profile differences between experimental groups. ANOVA-SCA The other is ANOVA-SCA and combines ANOVA-modeling and a dimension reduction technique to extract targeted signals from data bypassing structural noise. ANOVA-SCA basically applies PCA to the estimated parameters in each source of variation of an ANOVA model. ANOVASCA seems an effective approach for separating the data variability present in a complex time course experiment to extract the signal of interest from noisy data . fully Bayesian approach Angelini and coworkers have recently described a fully Bayesian approach to detect differentially expressed genes in time-course experiments. Their approach allows to explicitly use biological prior information and deals with various technical difficulties that arise in microarray timecourse experiments such as a small number of observations, non-uniform sampling intervals, missing or multiple data and temporal dependence between observations for each gene. Authors compared their method with that implemented in R-package time course and in the EDGE software claiming that their algorithm provides results which are much closer to a biologists choice and delivers a lower percentage of false positive and negative answers than other algorithms . Fischer and coworkers have compared methods for identifying differentially expressed genes on time-series microarray data simulated from artificial gene networks. They suggest the use of ANOVA variants of Cui and Churchill on the bases of simulated data and Efron and Tibshiranis empirical Bayes Wilcoxon rank sum test in the case experimental background cannot be effectively corrected. CHPM Shi has instead proposed an approach, based on a probabilistic continuous hidden process model ( CHPM ), to identify the various biological processes involved in a specific biological experiment. This method integrates time series expression data with GO biological processes , modelling the observed gene expression levels as being generated by a combination of multiple GO biological processes whose activity levels vary over time. OTHER TOOLs: STEM Short Time-series Expression Miner (STEM) (~8 time points or fewer). STEM allows researchers to identify significant temporal expression profiles and the genes associated with these profiles and to compare the behavior of these genes across multiple conditions. STEM is fully integrated with the Gene Ontology (GO) database supporting GO category gene enrichment analyses for sets of genes having the same temporal expression pattern. STEM also supports the ability to easily determine and visualize the behavior of genes belonging to a given GO category or user defined gene set, identifying which temporal expression profiles were enriched for these genes. DREM Dynamic Regulatory Events Miner (DREM) takes as input time series gene expression data and input that associates transcription factors with the genes they regulate . This regulatory information could come from Chromatin Immunoprecipitation (ChIP)-chip experiments or transcription factor binding site motif information. The transcription-factor gene regulation input does not need to be associated with specific time points. DREM after executing a computational method described in outputs an annotated dynamic regulatory map based on the data that can be interactively explored. The dynamic regulatory map highlights bifurcation events in the time series, that is places in the time series where sets of genes which previously had roughly similar expression level diverge. Often these bifurcation events can be explained by transcription factors selectively regulation a certain subset of genes. DREM annotates these events with transcription factors potentially responsible for them. DREM is related to another time series expression analysis software the Short Time-series Expression Miner ( STEM ) . While STEM focuses on identifying independent significant patterns in short time series data , DREM provides a global map of the gene regulation of the time series . The DREM method also incorporates in transcription factor-gene regulation information. DREM also is not limited to analyzing short time series data as STEM is. Some of the input file formats and options are the same in DREM as in STEM, in particular options related to gene filtering and the Gene Ontology analysis. For these aspects of DREM which are the same as in STEM, the relevant portions of the STEM manual have been incorporated into this manual. BiGGEsTS An integrated environment for the biclustering ( Madeira and Oliveira, 2004 ) analysis of time series gene expression data . Biclusters may be analyzed with Gene Ontology annotations to find out which contain statistically relevant biological information or even filtered or sorted according to several numerical and statistical criteria. 应用举例: STEM Comprehensive transcriptional profiling of NaCl-stressed Arabidopsis roots reveals novel classes of responsive genes Yuanqing Jiang and Michael K Deyholos* Address: Department of Biological Sciences, University of Alberta, Edmonton, Canada BMC Plant Biology 2006, 6:25 doi:10.1186/1471-2229-6-25 用STEM做了聚类,然后以GOTerm为层次标注各term中包含哪些cluster,有几个。 Combined analysis reveals a core set of cycling genes Yong Lu 1 , Shaun Mahony 2 , Panayiotis V Benos 2 , Roni Rosenfeld 3 , Itamar Simon 4 , Linda L Breeden 5 and Ziv Bar-Joseph 1 ,3 1 Department of Computer Science, Carnegie Mellon University, Forbes Avenue, Pittsburgh, Pennsylvania 15213, USA 2 Department of Computational Biology, University of Pittsburgh Medical School, Lothrop Street, Pittsburgh, Pennsylvania 15213, USA 3 Machine Learning Department, Carnegie Mellon University, Forbes Avenue, Pittsburgh, Pennsylvania 15213, USA 4 Department of Molecular Biology, Hebrew University Medical School, Jerusalem, Israel 91120 5 Basic Sciences Division, Fred Hutchinson Cancer Center, Fairview Avenue N, Seattle, Washington 98109, USA Genome Biology 2007, 8 : R146 doi:10.1186/gb-2007-8-7-r146 用STEM做了GO的显著性检验,P值,似乎大材小用 实战 STEM,总结如下: 1.用已经筛出来的差异基因做为输入,另外,用gene symbol来去除冗余(多个探针组对应同一蛋白,可以用UniRef);GO注释文件也以Gene symbol为ID(GO注释本来就是 注释 蛋白的,而非基因本身),但不可带有基因列表以外的Gene symbol。 2.可选STEM Cluster Method和K-means,设定Cluster数,进行GO Term富集分析。
个人分类: bioinformatics笔记|5106 次阅读|0 个评论
当幸福来敲门的时代来临了 The time of 'Pursuit of Happiness' is coming!
吴信 2009-3-14 21:35
当幸福来敲门的时代来临了 The time of Pursuit of Happiness 历史会重演,历史也正在重演 !就好像经济危机一样,反复循环 。面对当前的形势, 电影《当幸福来敲门》正是部很符合眼下的励志片。 很多的励志影片,阿甘,美丽心灵,肖申克的救赎,等等,此片正是需要眼下看的。励志题材的故事大抵都离不开这样的模式比如窘迫的处境、艰难的奋斗、没完没了的倒霉事 然后便会出现戏剧化的一丝机遇 虽然《当幸福来敲门》也不能落入俗套,也虽然这部电影没有靓丽的男女主演,没有唯美的画面与动人的背景音乐,但却仍不乏拥有一个好故事,并且,是一个足以将人打动的好故事。 电影简介: 1981 年。旧金山。 克里斯 加德纳是个聪明的医疗器械推销员,但在次经济萧条时期,他的日子很不好过。虽然每天奔波于各家医院和诊所,卖出一台仪器,可以当一个月的伙食。但医生们对他的骨密度扫描仪根本不感兴趣,因为这台仪器要比 X 光扫描仪贵出两倍。 这种不安定的生活已经影响到家庭的和睦,最终妻子琳达忍受不了经济上的压力,无法继续忍受艰难的生活,离开了克里斯,撇下他和 5 岁的儿子克里斯托夫相依为命。但加德纳父子两人的背运还没有结束,他们因为缴不起房租而被房东扫地出门,有时甚至要在地铁的卫生间里过夜。这时候克里斯银行帐户里只剩下 21 块钱,因为没钱付房租,他和儿子被撵出了公寓。 克里斯决心转行为有机会获得高收入的证券经纪人,费尽周折克里斯赢得了在一家声名显赫的股票投资公司实习的机会。他的努力和智慧打动了证券公司的经理杰 特维斯图,通过了初试,但是实习期间没有薪水,而且最终只有一人可以成功进入股票投资公司。为了通向幸福之路,克里斯决定走下去。此后的半年实习期加德纳父子的生活将更加艰难,因为实习期没有工资,而 20 个实习生中只有一个能留下来。他们暂时还得依靠那几台骨密度扫描仪过活为了省钱,每天晚上克里斯带着儿子去住收容所,吃饭靠领救济,他因交不上房租,而不得不义务粉墙;他因没钱交汽车罚单,而不得不在警察局里过夜;他因无处可去,而不得不抱着儿子在厕所过夜;他甚至不得不在下班后狂奔,那只为排队获得进收容所的机会但这些并没有摧毁父子间的亲情与他们的信念,他相信幸福总会落到自己的身上。而在复试中,因为出师不利,克里斯不得不穿着粉刷工的衣服来到面试现场。但只念过高中的他决心极大,最终,公司的几位合伙人还是觉得给他一个机会比较好,于是,他成为 20 个实习生之一。 凭借过人的智慧,与勤恳的努力,虽然面对了太多太多的 不得不 ,最终让克里斯 加德纳在获得工作机会的那一刻感到了莫大的幸福时刻 反复含着心酸的眼泪看着影片,含着幸福的眼泪结束影片的观赏 ! 这些让 我们有理由相信: Don't ever let somebody tell you , you can't do something- 别让别人跟你说,你成不了大器; You got a dream,you have to pretend it- 你有梦想的话,就必须保护它; People can't do something themselves , they wana tell you can't do it- 那些自己没有成才的人会说你也不能成才; You want something , go get it- 你想要什么的话 , 就得努力去得到。 幸福到底是什么?人的一生能体验到多少份量的幸福,其实关键在于你对人生所持的态度。你认为尽责任是一种幸福,你就有了幸福的体验;你认为知足是一种幸福,你就有了知足常乐的幸福体验;你认为平淡简朴是一种幸福,你就有了比别人多得多的幸福体验。每个人在心中都有自己的幸福标准,只要达到了这个标准,你就是幸福的。别人的幸福不一定是你所想要的,而你的幸福别人或许也未必认同。幸福是一件私有产品,只有自己才能体会那片刻的快乐。如果非要给幸福下个定论。我觉得无非有两种:一是你拥有完美的生活;一是做你最喜欢的事情。 不管你的生活是多么的残酷,要对生活重新燃起希望!活在希望中的人们是幸福的! 面对目前的经济不乐观和政治活跃等等的形势,我们有多少幸福?此外,黑人奥巴马当选美国总统所经历的曲曲折折,也会有幸福来敲门的时刻吧!这不仅是美国历史上,也是世界上的活生生的一个教材吧! 电影当幸福来敲门: The Pursuit of Happiness 中所述的即是非常合适的场景 。 就像温家宝总理在前几天两会上说的那样:只有信心才能产生勇气和力量! 也许,你时下找工作不如意,也许你目前收到了不少挫折,也许你的学业、生活、感情等等不顺利无论如何,你不可以没有梦想,要坚定我们的信念,坚信我们的幸福,拼搏加坚持就会成功!
个人分类: 艺术审美|2990 次阅读|0 个评论
Time Table (1)
WangShanShan 2009-2-15 15:43
03/15/09preview of doctoraldissertation (doctoral thesis) oral defense 04/15/09 submit doctoral thesis 05/15/09 doctoral thesis oral defense
个人分类: 生活点滴|198 次阅读|0 个评论
一周科技新闻简评——机器时代
songshuhui 2008-9-3 15:59
wilddonkey 发表于2008-04-21 星期一 18:35 分类: 其他 | | NASA 的工程师们正在对一种巨大的机器人进行测试,这种机器人的 使命是在荒无人烟的月球上充当宇航员的坐骑。这些大家伙宽 7.5 米,有六条 6 米多长的腿,绰号运动员,最快时速 10 公里。 运动员行动起来很稳重,像一只海龟,这有些辜负了它们的绰号。但稳重是必需的,因为背上是宇航员的住所。运动员每条腿都装上了轮子,可以行驶,经过有坡度的地方,各条腿的长度会自动进行调整,以确保住所里的宇航员坐的安稳。遇到大的沟坎,或是轮子陷进土里,运动 员会把轮子变成脚,六只脚轮流抬起、放下,小心翼翼走出困境。 有了这样一个坐骑,宇航员们就不必在固定的基地里日复一日的例行公事,而是有机会过上一种自由、浪漫的游牧生活。在荒凉的月球上四处游荡,在感兴趣的地方安营扎寨,勘探研究一番后,拔寨启程,开始新的旅途。 从月球到地球,人类越来越依赖于机器,各式各样的困难都试图通过 机器来解决。比如父母们在孩子长到一定程度,确切地说是牙齿已长齐并且能够独立使用牙刷的时候,会面临一个难题,那就是如何说服他们去刷牙。孩子们不喜欢刷牙,即便你成功地引发了他们的刷牙愿望,他们也会因为技术问题刷的不尽如人意,比如 5 岁的孩子通常只能清洁到 1/4 的牙齿。 为了解决这一难题,台湾大学的一个研究小组把这项枯燥乏味的琐事改造成了一场游戏。这场游戏的参与者包括接在普通牙刷 尾部的一个长方形小盒子,盒子的四个面嵌有以不同模式排列的三个发光二极管;一个安在盥洗台上方,通过发光二极管实时跟踪牙刷移动的摄像机;一个放在盥洗台上的计算机,接收摄像机发来的牙刷实时移动数据,据此精确计算出哪颗牙正在被刷到,并在屏幕上显示出一颗虚拟的牙齿从脏兮兮的五颜六色变为了光亮白净;最后,还需要一个觉得看到屏幕上的虚拟牙齿随着自己的动作一个个变干净非常有趣,乐在其中的孩子。 这场刷牙游戏或许还能吸引更大一点的孩子,甚至成年人,不过那需要屏幕上显示出 的场景更好玩一些。 家中添置了新机器,那些比电冰箱、洗衣机更高级、更智能的机器会给我们的 生活 带 来什 么新的改变?一个盘子大小的机器人正 在家中各个阴暗角落里 辛勤工作,确切地说它是一个自动吸尘器,商品名 Roo mba , iRobot 公司生产。但它的主人 不会认同这种说法,主人给它套上了外套,另起了名 字,赋予了性别,它成为了家中的一员。人们开始对身边的机器产生感情。 在伊拉克的美国士兵承认当他们的机器人被炸弹、地雷摧毁时,他们感到非常悲伤。 2020 年后,常驻月 球的宇航员们也会对自己的坐骑生出情感。未来,人与机器将演绎出更为复杂动人的情感纠葛。 标签: machine time , news
个人分类: 其他|1350 次阅读|0 个评论

Archiver|手机版|科学网 ( 京ICP备07017567号-12 )

GMT+8, 2024-6-2 16:06

Powered by ScienceNet.cn

Copyright © 2007- 中国科学报社

返回顶部