2013-06-26

 大学、2限のOSの講義に終了間際に行ってプリントを回収。3限は見なかったことにしてUbuntuのランチャー周りとV2Cをいじっていた。4限:ミル自由論演習。harm principleにおけるautonomyやheteronomyの話。某教授は言ってることが微妙に間違っている気がするのにこちらは論理的に問題点を指摘できる能力がなくてもやもやする。5限も見なかった振り。池袋で回転寿司食べて家に帰ってごろごろ。結局4時前までネットワーク工学のレポートをやっていた。明日はアーキテクチャやらないと。以下レポート関連のメモ。ぐちゃぐちゃだけど講義のほうのまとめはきちんとやりました。

 

<keywords memo>
・macro trends (from Wiki Answers)
 A Marco trend has a long life, a result of many forces in your community that you cannot manipulate. Like a river, you go with the current or exhaust yourself fighting it. Usually, as a strategic planning team formulates a strategy, we start with and lump trends into areas of analysis in our external environment: our market and our community.
・Macro Trends
 The Evolution of Intelligence
 Bow tie Architecture
  - 複雑な技術的生物学的システムに見られるような順序・周期構造。効率性や堅牢性を支えている。
 Virtualizes
 NetOPs(ネットワーク環境の構築) -> DevOPs(ソフトウェアとテクノロジーを結ぶ)
 Data Center
 Increasing influence of software: increasing volatility/uncertainty
・NetOps
NetOps is defined as the operational framework consisting of three essential tasks, Situational Awareness (SA), and Command & Control (C2) that the Commander (CDR) of US Strategic Command (USSTRATCOM), in coordination with DoD and Global NetOps Community, employs to operate, manage and defend the Global Information Grid (GIG) to ensure information superiority for the United States.
・DevOps
 DevOps (a portmanteau of development and operations) is a software development method that stresses communication, collaboration and integration between software developers and information technology (IT) professionals.
・complexity
 "complexity in highly organized systems arises primarily from design strategies intended to create robustness to uncertainty in their environments and component parts"
 環境や構成要素への堅牢性を創り出そうとする方針から高度に組織された複雑さが生じる
・software defined networking
 SDN problem hypothesis: It is the lack of ability to innovate in the underlying network coupled with the lack of proper network abstractions results in the inability to keep pace with user requirements to keep TCO under control.
 基礎的なネットワークを刷新する能力に欠いていて、ネットワークの適切な抽象化ができず、結果としてユーザーの要求に応えることができない
 *TCO: Total Cost of Ownership (=running cost of computer network)
・volatile
 chaging easily from one mood to another
・robustness
 Definition: a property of a system is robust if it is invariant with respect to a set of perturbations, up to some limit
 *perturbation: a small change in the quality, behaviour or movemant of sth.
・degeneracy(from wikipedia)

 Within biological systems, degeneracy refers to circumstances where structurally dissimilar components/modules/pathways can perform similar functions (i.e. are effectively interchangeable) under certain conditions, but perform distinct functions in other conditions.

 

では。

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