关于LPIC考试

叫嚣LPIC考试已经很久了,迟迟没有行动。很多人都是短时间突击就过了这个考试,我则是时间被切割的七零八落,完全没法连续起来学习。我很讨厌的一个人说,只要你想学,怎么样都能学进去,非常不幸的是他说对了。我已经很久没早起学习,或者连续做什么有意义的事,这种恶性循环导致了更多的挫败感。

但是,即使是如此仍然不能忘记鼓励自己,绝对不能破罐子破摔。搜集了一些能鼓舞士气的要素,如下:

  • 参加这个考试,经济上完全没有压力。LPIC全程下来大概要10万日元,这个在大学时代几乎不可能完成的任务。或者说我来日本就是为了结束连考个试都要跟家里要钱的怪现象。
  • 硬件上也没有压力,有太多的机器可以随时调动。
  • 考点很多,坐电车17分钟就到。
  • 收益大,只要是有计算机的地方就会受到认同

计划一周内拿到LPIC的101,必须给自己一些压力!

未完待续

发表在 进度报告 | 标签为 , | 关于LPIC考试已关闭评论

模型飞机遥控器笔记兼推荐

入门级直升机用遥控器,售价2万日圆左右。

国产V911,即便是日本人都承认是目前最具性价比的遥控模型直升机,7000日圆(弄这么便宜能挣到钱么我说?)

这个叫XG6的遥控器套装我完全没有见过,是一个叫日本远隔控制的公司做的,既然有日本俩字,估计不会太差,最大的优点是比T6J还便宜,1万6的样子。

另外发现一个地方卖kk2很便宜,甚至比某宝还便宜 http://hobbyshop-gamu.jp/SHOP/GMAFC14215.html 5000日圆不含运费

尽管跟三轴飞行器计划不太沾边,但是作为玩具已经无懈可击了,Q版直升机,真特么会飞,震惊了,而且便宜的狠,只要3000日圆……

最后发个京商的,作为老牌帝国主义遥控模型厂商,必须给新兴土包子国家上一课,到底什么是真正的低成本遥控模型灰机

发表在 三轴飞行器 | 模型飞机遥控器笔记兼推荐已关闭评论

移动硬盘推荐

数字地上电视砖用,墙裂推荐

发表在 杂谈 | 移动硬盘推荐已关闭评论

建立三轴飞行器砖题

研究三轴飞行器已经有几个月,有了一定的感官认识。之前一直比较难以接受传统的遥控器设备,更倾向于用wifi和PC进行控制,逐渐发现实际上有现成产品,几乎达到自己动手组装调试一下即可飞行的程度。

本砖题的目标是做一个有实时摄像头,通过wifi传输视频和控制信号,GPS森么的作为可选件。

机载计算机:毫无悬念的用raspberry pi,淘宝价240,买四个,让同学从国内捎回来,需要摄像头配件。

舵机控制器:这个比较关键,简单的说就是把计算机的串口信号转换为舵机能识别的pwm信号,pololu maetro 6通道即可,貌似国内没有卖的,日本雅虎也没有,但是可以通过网站直通订货,含运费要300多。题外话,应该试着多买几个,在雅虎上卖卖看。

电动机和电池:完全没有概念应该买什么样的,需要调查。目标是全重1000g的飞行器滞空时间超过半小时。貌似国内比较便宜,可以试试。

电子调速器:淘宝,最经济的方法,买6个,配套比较麻烦,需要先知道电机的型号。

三轴飞行协调器:对这个的了解也很少,觉得是不是应该写个程序,直接在raspberry上实现这个功能,貌似比较有难度,就先算了吧。

机架,3D打印,没什么好说的。

发表在 三轴飞行器 | 标签为 , , , | 建立三轴飞行器砖题已关闭评论

Ubuntu 12.04 xRDP finally working, too

Things went wrong when I attempted to log on ubuntu desktop with xrdp about 1 year ago, I gave up and use ssh instead, today I tried again, problem solved easily, here is the link:

http://look-nomore.blogspot.jp/2012/09/ubuntu-1204-xrdp-finally-working.html

发表在 技术 | 标签为 , , , | Ubuntu 12.04 xRDP finally working, too已关闭评论

Considering quit current part time job in IT company

I started a part time job in IT company since last November. I thought it will increase my experence on Android programming, but they asigned me to work as a network engineer, while there is little work to do. After strugling more than half a year, I felt tired of do nothing, by the way, we just go to the company for meeting on Tuesday, on other days they just sit in home and programming, while I have nothing to do. I think it is my problem for feeling have nothing to do, beacuse I rarely can, 6 years ago I came to Japan to learn more, but now I cant tell you what I learnt, I still counldnt even write hello world wihtout googleing, or set up network in Ubuntu by command line.

Another reason that I want to quit this job is, this is my 2nd year of PhD course, I am supposed to graduate on September 2015, but now I am still working on my Janal paper, which takes more than 6 months for reviewing and publish. I have to concetrate to my research, and, I felt pressure becasue other students making progress significanly.

There is accutely one more reason: I found new way to make living, selling old PCs on auction site, it is not that much, but more effitient than working in McD, and of course, lots of fun, I feel good when these Junk PCs go back to work instead pay someone to take them apart.

A lot of things I planed before I came to Japan, some of them dreams come true, but most of them are yet to be done, while time as a student is getting less and less, I must hurry. In April we had a big party for new face of lab, and the Assoc.Prof said he was not able to program when he entered graduate school, and now he has a PhD and serval paper published on IEEE trans, I would like to know that on my day of coming to this lab 3 years ago, but it is never too late, I believe.

发表在 进度报告 | 标签为 , , , , | Considering quit current part time job in IT company已关闭评论

Infor about tc in ubuntu

This is just a memo of my own research, please skip this log if you a not intersted in network.

http://laddumishra.wordpress.com/2011/12/27/traffic-control-using-tc-in-linuxubuntu/

by the way, this article was found in wordpress.com, I readly should use title as http address.

发表在 进度报告 | Infor about tc in ubuntu已关闭评论

How to sell old book in Japan with BookOff ?

If you are a foreign student in Japan, just like me, you must have a lot of book to throw away when you move of go back to home country. Although we can sell them on Amazon.co.jp, but :

  • It takes a lot of time
  • Over 20% of profit will be taken by amazon
  • You cant sell them in one package

There happen to be a old book dealer called BookOff in Japan, who can help us out in better way.

First you need to log on to bookoff.co.jp

Screenshot 13:07:18 14:49

 You need only 4 steps: Put books into the box, apply for package collecting, hand out the package,  receive the money.

There are simple rules for selling your books to bookoff. You need to sell at least 20 books a time, or 3 CDs. After you made the application, postman will come the the address to collect the box for free, then bookoff will send you results,you made the confirmation and transaction is done. Bookoff saves us time to go to its stores, although you get less than selling books on amazon by your own.  For those books might worth less than a YEN, bookoff will send you confirmation for recycle, if you disagree you can get these books back, but I never did, who wants these books anyway?

Beware that that they are offering free box :

Screenshot 13:07:18 15:00

Because you need application number for empty boxes, and sometimes you will never able to send books without them, so you need to make the application little earlier, maybe 3 days.

Here is an example of my books to bookoff

bookoff-result

 I sold 30 SLAM DUNK comics for 2700 YEN, 1 novel was labeled worthless, and I agree. Other than book, wan also sell games to bookoff too. Hope this will help you have a better time in Japan.

发表在 杂谈 | 标签为 , , , , | How to sell old book in Japan with BookOff ?已关闭评论

松下GM,索尼 HDR-CX535 研究有感

上个月把NEX5R给摔裂了,尽管完全不影响拍摄,但还是调查了一下替代机型。

回顾在日本这六年,几乎主题就是更新换代各种相机,建议入管增设一个相机签证,笑

我一直觉得相机应该越造越小,貌似宾得就是这个理念,尽管他们运作的不咋地

微单是我登陆之后才出现的一种新结构相机,没有数码时代这个结构不可能实现。尽管我很反感用屏幕取景,因为看起来特别业余,然而这股歪风一下就那么兴起,搞得单反也开始支持屏幕取景,佳能还努力的把这个功能用到了正路上去,弄出入门单反的转屏这个设计,你造在人群中举着相机拍俯瞰角度没有这个转屏的话几乎就是不可能的吗?真的很有创意。回到越来越小的话题上,微单几乎是尺寸和成像素质的最佳搭配(就不用那个被屌丝和科盲用滥了的画质来描述了)。

松下GM就算这么一台越造越小的相机,我第一次看到这台机器以为是个固定镜头的卡片机,而且这么小的机身里还内置了闪光灯,让你不由得耻笑sony把闪光灯卸下来装在背带上的小聪明。

发个GM的链接,,有兴趣日亚的朋友可以看看,有四种配色,个人比较倾向于棕色,有早期日系旁轴的风采。BTW,LUMIX系列一直用莱卡专利的镜头,也算一个卖点。题外话是,当初佳能靠仿制莱卡发迹,现在莱卡却给佳能的小对手打工,非常有趣。GM套机在日亚的售价大概2800人民币。

Panasonic デジタル一眼カメラ ルミックス GM1 レンズキット 標準ズームレンズ付属 オレンジ DMC-GM1K-D

 

之所以当初买了NEX,不仅仅是为了照相,还是为了摄影。我总觉得电影要比静止的相片更有表现力。相机也不过是最近几年才在我朝流行的消费产品,玩法还很单一,大多数人仅仅是因为别人买了个单反,自己也买了一个。而在日本,像手持式摄影机这种东西是从胶片时代就开始流行的,去卖场看看,DV永远都是跟相机分庭抗礼的,而且带动经济推进的绝对是DV而不是照相机,原因很简单,DV需要大量的耗材和配套设备:存储装置,处理用计算机,甚至带动了网络的发展,因为播放视频需要很大的带宽,而且数码时代后的DV结构简单成本很低,商家非常乐意赚这个钱,我看国内貌似有这个苗头,在相机领域没怎么抓住机遇的国产厂商,可以试试这个DV的新领域,国内完全有这个消费需求。

扯了这么远,帖一个日本价格网上销量和关注度都是排名第一的HDR-CX535的链接,有最新式的眼球防抖功能,尽管笔者反复墙调在牛逼的防抖不如三脚架,但是不得不佩服这个眼球防抖,已经超越了三脚架的应用范畴,比方说在高速行进的舰艇上都能获得稳定的图像。除了防抖,CX535还内置32GB的内存,整机在日亚的售价不到3000人民币。

ソニー デジタルHDビデオカメラレコーダー「HDR-CX535」(ピンク)内蔵メモリー:32GB HDR-CX535-P

 

发表在 摄影 | 标签为 , , , , | 松下GM,索尼 HDR-CX535 研究有感已关闭评论

一些关于建站的点子

貌似建立这个网站已经一周年了,ISP给我来了新的域名账单是一个标志。

这一年断断续续的帖了一些文章,做了一些摸索,不知道是否像预计的那样帮助到了对日本留学有兴趣的学生。有的时候我在想,在帮助别人之前要先自己过硬,不需要帮助,曲解一下就是眼下我主要的目标是用网络赚钱,只要赚钱就该做,不用管什么主题。我不知道这个想法有什么问题,但是很显然不利于liuxue.jp的建设,而且往深里想一点就会知道,没有主题的网站很难有建树,或者说人生的其他的什么事也是一样。

不过确实应该考虑一下变革。很显然国内的流量明显不足,每次点击的收入也明显比英文圈低很多。有鉴于我比日本人英语强那么一点点,又知道一些日本留学的细节,这些应该写成英文。

最近一个月的目标是靠点击月收入100刀。

发表在 杂谈 | 一些关于建站的点子已关闭评论