Chinoiseries2014

中国高铁的优势: 行价比+质量好
1. 速度快: 350 km / h (但因空气阻力, 机械寿命和安全, 限制在 300 km/h)
2. 整建制 (End-to-End Integrated Build)
3. 低价 : RMB 1.8 亿 / 公里 (日本是2.4 亿/公里)

中国高铁技术达世界一流:
◇ 2007 引进德国技术,
◇ 中国再创新 1,000 个世界标准

中国高铁策略和目标:
1. 全国个大省到北京: 8 小时
2. 市到省会: 4 小时
3. 高铁站多建在市外, 把城市发展中心拉近高铁。

高铁营业模式: 以货运为主, 客运为副:
客运亏本, 货运赚钱 (高铁代替汽车, 大货车运货)

“北京 -上海”(1,318 km) = RMB 2,500 亿
(公司每年能赚300亿还给国家, 10年可以还清)

中国2百万铁路工人的薪金低, 但终身工作稳定, 有医疗福利: 年薪北京 (RMB 7万 ) / 上海 (8~9万) / 江西 (5万)。

高铁人才培训注重: 品德问题, 业务问题, 把复杂问题简单化。

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山东大娘 “汉字笔划”大脑心算

Chinoiseries 《汉瀚》［中/英/日/韩/法］

赵大娘的脑海看汉字就能算出它的笔划。5次挑战, 4次成功。其实她应该是全胜,误在 “捭” 的”卑”字的一个特别 “撇”划:

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Prof ST Yau’s 邱成桐 Talk to Chinese Youth on Math Education

Math Online Tom Circle

Prof ST Yau邱成桐, Chinese/HK Harvard Math Dean, is the only 2 Mathematicians in history (the other person is Prof Pierre Deligne of Belgium) who won ALL 3 top math prizes: Fields Medal (at 27, proving Calabi Conjecture), Crafoord Prize(1994),Wolf Prize(2010).

Key Takeaways:

1. On Math Education:
◇ Compulsary Math training for reasoning skill applicable in Economy, Law, Medicine, etc.
◇ Study Math Tip: read the new topic notes 1 day before the lecture, then after it do the problems.
◇ Read Math topics even though you do not understand in first round, re-read few more times, then few days / months / years / decades later you will digest them. (做学问的程序).
◇ Do not consult students in WHAT to teach, because they don’t know what to learn.
◇ Love of Math beauty is the “pull-factor” for motivating students’ interest in Math.
◇ Parental…

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Founder of Alibaba Jack Ma Interview by Charlie Rose & Bill Clinton

Chinoiseries 《汉瀚》［中/英/日/韩/法］

(Jan 2017) Interview by Charlie Rose

Key take-aways:

Q1. Why called Alibaba ?
JM: I like “Alibaba, open sesame”. Internet is also opening opportunities.

Q2. What is your business philosophy?
JM: Customer #1, Employees #2, Shareholders #3. The conventional companies reverse these 3 priorities. When your company business hits difficulties, shareholders run first, but loyal employees and loyal customers stay with you.

Q3: Where are the business opportunities ?
JM: Today opportunities are everywhere if companies can solve problems faced by the customers. Alibaba’s value is helping the few hundred million SME (Small-Medium Entreprises) to sell their goods to the world. By helping customers (SME), they in turn help Alibaba growing.

Q4: Will Alibaba surpass Microsoft or Walmart one day ?
JM: Yes. Microsoft & Walmart are B-2-C business model, but Alibaba is bigger: C-2-B, bringing billion of customers together to force companies change their way of operating business.

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Chinese Remainder Theorem (韩信点兵) “The Problem of 6 Professors”

Math Online Tom Circle

How to formulate this problem in CRT (Chinese Remainder Theorem, aka“韩信点兵”dated since 3rd century in China.) ?

Let d = week days {1, 2, 3, 4, 5, 6, 7} for {Monday (Prof M), tuesday (Prof t), Wednesday (Prof W), Thursday (Prof T), Friday (Prof F), saturday (Prof s), Sunday (Prof S)}

d : 1 2 3 4 5 6 [7] 1 2 3 4 5 6 [7] 1 2
M: m 0 m 0 m 0 [m] ==> fell on 1st sunday
t: - t 0 0 t 0 [0 ] t 0 0 t 0 0 [t ] ==> fell on 2nd sunday
W: – - w 0 0 0 [w] 0 0 0 w 0 0 [0] ==> fell on 1st sunday
T: - - - T T T [T] ==> fell on 1st sunday (TRIVIAL CASE!)
F: - - - - f 0…

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