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-1. The cancellation of the meeting is due to the rain. due to= caused by -2. Thank you for considering my request. I will be grateful for the help. I hope you will be able to provide the information. Instead of ‘thank you in advance’. -3. If there is any question, please let me know. Should you have any question, please let me know. Read More

-1. Can I get a drip coffee, please?/May I have a drip coffee, please? Do you have drip coffee?/Can I order a drip coffee? 手冲咖啡 -2. Can I get this to go? I’d like the Spaghetti and Meatballs, to go please. Can I have the Fried Rice and Egg Rolls? Take out. For here or to go? For here, please -3. Is that all you’ll be ordering?/ Would you l... Read More

Installing Jekyll Install Ruby Use Ruby –version to check Install Bundler gem install bundler Install Jekyll Write the following in Gemfile source ‘https://rubygems.org’ gem ‘github-pages’ Then use the command to run jekyll in the local server. bundle exec jekyll serve http://localhost:4000 Problem 1: Please add the following to your ... Read More

On the cutting stock problem under stochastic demand. Read More

四舍六入五成双/单 ieee754 round(1.315,2) = 1.31 round(7.55,1) = 7.5 python判断某个模块是否有某个方法 import requests hasattr(requests,'get') 查看方法 import typing help(typing.List) print(dir(typing)) typing.__file__ print(typing.__doc__) 查看对象 object.dit 查看源代码 inspect 一个Python内置的标准库 drill 是一个第三方库 import inspect from bs4 import BeautifulSoup 先看看Be... Read More

DOR: -1. objective function the summation of bivariate function with a knapsack constraint develop a DP state, stage, recursion, value function What if add another term \(x_n x_1\) -2. what the relation between \(\min cx s.t. Ax \geq b\) and \(\max cx s.t. Ax \leq b\) when these two LPs have finite optimal solutions. In fact, they will... Read More

-1. Finite states markov chain Irreducible. You should know the difference between recurrent and transient. -2. M/M/2/n 2 : servers. n : Waiting space. -3. \(M/M/\infty\) Birth and death process. Define the correct states. -4. Notice the difference between simple random walk and gambler ruin problem. The probability of a before b. The ex... Read More

1、低价股不要进！只有强者恒强，少有弱者转强，股价低于6元，要么是业绩不行，要么是主力不喜欢，总之都没有上涨的逻辑，很难出现黑马股，形态再好不要进！ 2、高位出利好的票不要进！当一只股票涨幅超过80%以上，然后再出利好的大多数是吸引散户跟风接盘，因为消息主力已经提前知晓，如果跟风的人不多可能还会拉一波再诱多，如果跟风人过多主力直接出货造成股价大跌！ 3、偏离均线过远的票不要进！任何一只股票的上涨都会依托某根均线，比如10日或者20日均线，但当连续大阳线上涨偏离这根均线过远的时候不要着急介入，因为他往往会回调到均线附近再二次上攻，势必给你更好的点位！ 4、跳空三连阳的票不要进！当一只股票连续跳空高开高走，出现2个没有回补的缺口的3根阳线后，大概率是主力拉一波就跑，后市通常会跌的，所... Read More

Feeling some nervousness before giving a speech is natural and even beneficial. But too much nervousness can be detrimental. Here are some proven tips on how to control your butterflies and give better presentations: -1. Know your material Pick a topic you intersted in. Know more about it than you include in your speech. -2. Practice. Practic... Read More

Shit Take a shit Oh shit! (surprising) The shit (Great) Piece of shit (Bad) Give a shit (care about) Eat shit (if you fall down then you ate shit) Shitty (Terrible) Fuck Fuck (Unhappy) Fuck this (Give it up, 去你的) Fuck off (get off) F... Read More