Okinawa Churaumi Aquarium Kouri Bridge - The Longest Bridge in Okinawa Week1821 (05/0425) 網路文章 Students are being prepared for jobs that no longer exist. Here’s how that could change. NBC關於美國高中教育的深入報導, 提到現在的教育方式已經無法保證讓學生找到理想的工作，尤其是技職生. 文中提到几個點: 高中準時畢業的人有84%, 後來70%直升大學. 雖然學校盡力教導讓學生面對未來, 但學校也不知將來會是如何, 因為計劃跟不上變化. “We’re preparing kids for these jobs of tomorrow, but we really don’t even know what they are,” 2016年的調查, 只有34%的高中生(12th-graders) 對學習感到興趣. 公立大學(University of Massachusetts Lowell)1年的學費大約37萬台幣($12,496USD), 私立大學(Elmhurst College)學費約140萬台幣($47,121USD), 另一所公立大學(University of Minnesota)學費約91萬台幣($30,514USD). 另外自己查了一下哈佛大學每年學費138萬台幣(46,340USD), 以上都是只有學費, 如果加上宿舍及雜費大約是202萬台幣($67,580USD). 至2017年底美國的學貸已高達1.38兆美元, 房貸8.88兆美元, 信用卡債8340億美元. 53%大學生有學貸. Ref: https://www.newyorkfed.org/newsevents/news/research/2018/rp180213 醫護助理平均年薪67萬台幣($22,600USD), 2017年金融保險業年薪中位數約306萬台幣($102，510), 科技業約303萬台幣($101，430), 政府單位約295萬台幣($98,830), 所有職業中位數約113萬台幣($37,690). Ref: https://www.bls.gov/ooh/math/actuaries.htm#tab-5 網路資源 Linux Syscall Reference ...

Algorithm, Blockchain, Coursera 真心推Coursera上的Data Structures and Algorithms Specialization, 挑有興趣的就好. 2017年底至今拿了4張Certifications, Algorithms on Graphs是比較有趣的課程. 其它3張是Algorithmic Toolbox, Data Structures, Algorithms on Strings Week14 (04/06) 讀書心得 Burrows-Wheeler Transform - data compression Cyclic rotation Sorting Last column Inverting Burrows-wheeler transform Mark the occurrence of characters Putting sorted bwt string to frist column Knuth–Morris–Pratt - string searching algorithm (or KMP algorithm) Suffix array - a sorted array of all suffixes of a string. Week15 (04/13) Week16 (04/20) Week17 (04/27) 網路文章 World’s first IOTA Smart Charging Station 哦哦哦！M2M. ...

Debug, Debug, Debug…, Muscle Up Tips Week9 (03/02) 讀書心得 FBI談判協商術 積極聆聽, 鏡像模仿, 極端錨點, 開放型/測試型/校準型問題, 對事不對人, 每個人都怕失去, 成見使人盲目, 假設提供指引. The power of “No”, Three types of “Yes”, The power of “Right”, Emotion is one of the keys, Be Honest. Thinking fast and slow. Week10 (03/09) 網路資源 Chris Voss: Never Split the Difference Week11 (03/16) 網路文章 Android Treble: blessing or trouble? Diving into SDCardFS: How Google’s FUSE Replacement Will Reduce I/O Overhead ...

Android, Chinese New Year, blockchain, Cache miss Week5 (02/02) 這個月雖然有年假但比平常更忙！ 結論: 放假不一定放鬆, 想專心做事 :-) 網路文章 Processor Pipeline Gallery of Processor Cache Effects Using Streamline to Guide Cache Optimization 參考這篇分析Kodi17.6影片播放時的L1/L2 cache access情況, 播放2160p影片時L1/L2 data ratios不高分別在0.046/0.18, 使用Kodi18更少分別為0.041/0.16. 另外Kodi18在記憶體使用上比17.6減少3.6%, cache miss 減少47~55%. Cache Refill Ratios算法 L1 data ratio: $CacheDataRefill/$CacheDataAccess L2 data ratio: $CacheL2DataRefill/$CacheL2DataAccess 網路資源 Blockchain Demo 大略的介紹blockchain, 簡單明瞭.

Android, Algorithms Week1 (01/05) 讀書心得 Algorithms on Graphs - Week5 給出座標上n個點: 找出最短路徑(the shortest path) 分群(Clustering) 為Minimun Spanning Tree相關問題, 可以使用Kruskal’s MST Algorithm 及Disjoint-set 來解. for all u ∈ V : MakeSet(v ) X ← empty set // a set with solution edges sort the edges E by weight for all {u, v } ∈ E in non-decreasing weight order: if Find(u) != Find(v): add {u, v } to X Union(u, v ) return X Week2 (01/12) 網路文章 Android编译系统中的Android.bp、Blueprint与Soong ...

SEAndroid, Algorithms, Numpy Android N -> O 被自己的石頭砸到腳 對於晶片廠來說Android決解了軟體開發的問題, 也加速了ODM/OEM的開發時程. 沒錯…但對於手機/電視之外的應用..存在些問題. 另外差異化及客制帶來些不定時炸彈. Sepolicy for Android Treble 使用numpy array修改pixel values. 網路資源 Machine Learning 101 - Jason Mayes New year’s resolutions IELTS overall 6.5 Data Structures and Algorithms Specialization Master of Computer Science in Data Science

A Note about sepolicy in Android Oreo. First thing first SELinux documents: SELinux for Android 8.0 What is SELinux? What is SEAndroid? SELinux Policy Concepts and Overview Android sepolicy files Policy path: /system/sepolicy BOARD_SEPOLICY_DIR (device/$VENDOR/$DEVICE/sepolicy/, device/$VENDOR/$DEVICE/common/sepolicy/) Policy Macros: system/sepolicy/public/te_macros system/sepolicy/public/global_macros system/sepolicy/public/ioctl_macros system/sepolicy/public/neverallow_macros system/sepolicy/private/mls_macros system/sepolicy/reqd_mask/mls_macros Security Context: file_contexts, labeling files infilesystem. property_contexts, labeling android system/vendor properties genfs_contexts, Pre-file labeling for /proc files, generic filesystem security contexts. seapp_contexts, used by zygote and installd via libselinux, mapping app UID andseinfofor /data/data directory hwservice_contexts, for hwservice manager to check vndservice_contestx, for vndservice manager to check service_contexts, for service manager to check Type Enforcement *.te Composing Policy for Android trebel Add domains for a service ...