2013/08/24 LLまつり 天文学におけるLL利用の過去と現在
Download as pptx, pdf2 likes1,324 views
1 of 23
Download to read offline
Ad
Recommended
気候モデル放射カーネルの骋笔鲍への移植と高速化
気候モデル放射カーネルの骋笔鲍への移植と高速化Takateru Yamagishi
?
近年数値シミュレーション研究において、本来グラフィック処理用のGPU（Graphics Processing Unit）を演算用途に用いることが進んでいる。GPUは、CPUに比べて高い演算性能、プロセッサ-メモリ間での高いデータ転送速度に加えて高い電力効率といった特徴を持つことから、米国オークリッジ国立研究所のTitan（2012年11月に世界最高演算性能を記録）、東京工業大学のTSUBAME2.0などGPUを用いた大規模スーパーコンピュータ（以下スパコン）の割合が増加している。
気象?気候モデルへのGPUの適用では、先進的な事例としてShimokawabe et al. (2010)による気象モデルASUCAのGPUへの移植とTSUBAME2.0での大規模実行がある。しかしながら、気象?気候学からの研究成果を創出するほどにはGPUは普及していない状況である。考えられる理由としては、GPUはCPUに比べてコア数が多く超並列でのプログラミングが求められること、CPUとGPUの複合アーキテクチャとなること、GPU用言語（CUDA）の利用、コードのポータビリティの問題に加え先行事例が少ないために知見の蓄積が不十分であることが挙げられる。
その一方国外では NIM（NOAA）またはCAM-SE（NCAR）など、気象?気候モデルのGPUへの移植が進行中であり、GPUの高い性能を生かした気象?気候学としての成果がTitan等の大規模GPUスパコンを用いて得られることが見込まれている。今後国内でも気象?気候モデルのGPUへの適用を検討する重要性は高い。
また、2018 年頃を目標 に京コンピュータの100倍の性能を目指して開発が進むエクサスケール規模のスパコンでは、数百の計算コアを持つプロセッサの採用が見込まれている。GPUにて気象?気候モデルの超並列計算を研究することは、エクサスケール規模のスパコンで必須となる超並列計算に向けた基礎研究としての意味を持つ。
以上を踏まえ、気象?気候モデルのGPUへの適用性の検討と適用に必要な知見の蓄積を目標に、気候モデル放射カーネルのGPUへの移植とその高速化を試みた。Analysis on Solar Radiation Distribution in a city with GIS Data , Part 7 Rep...
Analysis on Solar Radiation Distribution in a city with GIS Data , Part 7 Rep...Taro Mori
?
GISデータを用いた都市内における日射量分布解析 その7 ALOSデータを用いた都市形状の再現 Scikit learnで学ぶ機械学習入門
Scikit learnで学ぶ機械学習入門Takami Sato
?
勉强会で话した、厂肠颈办颈迟-濒别补谤苍の入门资料です。蝉辫别补办别谤诲别肠でも共有しましたが、蝉濒颈诲别蝉丑补谤别一本化のためこちらにも上げます2024 Trend Updates: What Really Works In SEO & Content Marketing
2024 Trend Updates: What Really Works In SEO & Content MarketingSearch Engine Journal
?
The document outlines key SEO and content marketing trends for 2024, emphasizing the impact of AI, the importance of E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness), and a shift towards user-centric content strategies. It advises against focusing on outdated trends like voice search and stresses the need for creating value-driven, authoritative content. Additionally, it highlights the need to leverage AI as a supportive tool rather than relying solely on it for content creation.Protect Your IoT Data with UbiBot's Private Platform.pptx
Protect Your IoT Data with UbiBot's Private Platform.pptxユビボット 株式会社
?
Our on-premise IoT platform offers a secure and scalable solution for businesses, with features such as real-time monitoring, customizable alerts and open API support, and can be deployed on your own servers to ensure complete data privacy and control.PGConf.dev 2025 参加レポート (JPUG総会併設セミナー2025 発表資料)
PGConf.dev 2025 参加レポート (JPUG総会併設セミナー2025 発表資料)NTT DATA Technology & Innovation
?
PGConf.dev 2025 参加レポート
(JPUG総会併設セミナー2025 発表資料)
2025年6月14日(土)
NTTデータ
OSSビジネス推進室
貞弘 泰輔、池田 凛太郎Storytelling For The Web: Integrate Storytelling in your Design Process
Storytelling For The Web: Integrate Storytelling in your Design ProcessChiara Aliotta
?
The document outlines a livestream presentation by Chiara Aliotta on integrating storytelling into web design to enhance user experiences. It covers the storytelling process for designers, emphasizing aspects such as understanding the audience, structuring narratives, and creating emotional connections. The presentation also includes case studies and practical examples to demonstrate effective storytelling in UX/UI design.Artificial Intelligence, Data and Competition – SCHREPEL – June 2024 OECD dis...
Artificial Intelligence, Data and Competition – SCHREPEL – June 2024 OECD dis...OECD Directorate for Financial and Enterprise Affairs
?
This presentation by Thibault Schrepel, Associate Professor of Law at Vrije Universiteit Amsterdam University, was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
How to Leverage AI to Boost Employee Wellness - Lydia Di Francesco - SocialHR...
How to Leverage AI to Boost Employee Wellness - Lydia Di Francesco - SocialHR...SocialHRCamp
?
The document discusses leveraging AI to enhance employee wellness through data analytics, automating tasks, and personalized wellness apps, emphasizing the shared responsibility of employee well-being between leaders and organizations. It outlines best practices for using AI in wellness strategies, including ensuring data privacy and security, understanding employee needs, and promoting inclusivity. Lydia Di Francesco, a wellness specialist, shares insights to optimize workplace wellness strategy using AI-driven data analytics and encourages collaboration and transparency.2024 State of Marketing Report – by Hubspot
2024 State of Marketing Report – by HubspotMarius Sescu
?
The State of Marketing 2024 report highlights the transformative impact of AI and automation, emphasizing the importance of personalization and engagement to drive growth in a competitive landscape. Marketers are focusing on optimizing budgets, leveraging social media for brand awareness, and utilizing AI tools to enhance efficiency across tasks. Key trends for 2024 include the rise of experiential marketing, content creation that meets user needs, and strengthened connections through personalized customer experiences.Everything You Need To Know About ChatGPT
Everything You Need To Know About ChatGPTExpeed Software
?
ChatGPT is an AI chatbot developed by OpenAI, built on advanced language models to facilitate human-like conversational interactions. Launched in November 2022, it utilizes a transformer architecture to understand and generate text, with applications ranging from content creation to customer service. Despite its capabilities, there are concerns about potential misuse and biases in its responses, which OpenAI aims to mitigate through moderation and user feedback.Product Design Trends in 2024 | Teenage Engineerings
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
?
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.How Race, Age and Gender Shape Attitudes Towards Mental Health
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
?
The November 2023 mental health report indicates that 70% of respondents rate their mental health as 'good' or 'excellent,' with higher diagnoses reported among African Americans and non-Hispanic whites compared to Hispanics and Asians. Younger generations, particularly Gen Z and millennials, are more likely to experience mental health challenges, seek information online, and report that their mental health impacts their work and relationships. Half of the respondents feel comfortable discussing their mental health with professionals, although Gen Z shows the least comfort in this area.AI Trends in Creative Operations 2024 by Artwork Flow.pdf
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
?
Creative operations teams expect increased AI use in 2024. Currently, over half of tasks are not AI-enabled, but this is expected to decrease in the coming year. ChatGPT is the most popular AI tool currently. Business leaders are more actively exploring AI benefits than individual contributors. Most respondents do not believe AI will impact workforce size in 2024. However, some inhibitions still exist around AI accuracy and lack of understanding. Creatives primarily want to use AI to save time on mundane tasks and boost productivity.Skeleton Culture Code
Skeleton Culture CodeSkeleton Technologies
?
Organizational culture includes values, norms, systems, symbols, language, assumptions, beliefs, and habits that influence employee behaviors and how people interpret those behaviors. It is important because culture can help or hinder a company's success. Some key aspects of Netflix's culture that help it achieve results include hiring smartly so every position has stars, focusing on attitude over just aptitude, and having a strict policy against peacocks, whiners, and jerks.PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024Neil Kimberley
?
PepsiCo provided a safe harbor statement noting that any forward-looking statements are based on currently available information and are subject to risks and uncertainties. It also provided information on non-GAAP measures and directing readers to its website for disclosure and reconciliation. The document then discussed PepsiCo's business overview, including that it is a global beverage and convenient food company with iconic brands, $91 billion in net revenue in 2023, and nearly $14 billion in core operating profit. It operates through a divisional structure with a focus on local consumers.Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)contently
?
This document provides an overview of content methodology best practices. It defines content methodology as establishing objectives, KPIs, and a culture of continuous learning and iteration. An effective methodology focuses on connecting with audiences, creating optimal content, and optimizing processes. It also discusses why a methodology is needed due to the competitive landscape, proliferation of channels, and opportunities for improvement. Components of an effective methodology include defining objectives and KPIs, audience analysis, identifying opportunities, and evaluating resources. The document concludes with recommendations around creating a content plan, testing and optimizing content over 90 days.How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024Albert Qian
?
The document provides guidance on preparing a job search for 2024. It discusses the state of the job market, focusing on growth in AI and healthcare but also continued layoffs. It recommends figuring out what you want to do by researching interests and skills, then conducting informational interviews. The job search should involve building a personal brand on LinkedIn, actively applying to jobs, tailoring resumes and interviews, maintaining job hunting as a habit, and continuing self-improvement. Once hired, the document advises setting new goals and keeping skills and networking active in case of future opportunities.Social Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie InsightsKurio // The Social Media Age(ncy)
?
The 2024 social media marketing trends report highlights significant shifts influenced by generative AI, including the emergence of personalized content, the rise of virtual influencers, and a stronger focus on user-generated content. Insights were gathered from 33 experts across 23 leading independent agencies, providing a perspective that emphasizes creativity and authenticity in marketing strategies. Key trends also include the blending of B2B and B2C approaches, reflecting changes in consumer behavior and the evolving landscape of social media engagement.Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
?
The document discusses trends in paid search for 2024, highlighting changes in user behavior, the implications for financial services, and privacy challenges. It emphasizes the importance of adapting search strategies, utilizing AI-driven tools like performance max and smart bidding, and leveraging first-party data for better marketing efficacy. Key takeaways include holistic SEO and SEM approaches, monitoring shifting user intents, and the need for continuous performance evaluation.More Related Content
Recently uploaded (8)
Protect Your IoT Data with UbiBot's Private Platform.pptx
Protect Your IoT Data with UbiBot's Private Platform.pptxユビボット 株式会社
?
Our on-premise IoT platform offers a secure and scalable solution for businesses, with features such as real-time monitoring, customizable alerts and open API support, and can be deployed on your own servers to ensure complete data privacy and control.PGConf.dev 2025 参加レポート (JPUG総会併設セミナー2025 発表資料)
PGConf.dev 2025 参加レポート (JPUG総会併設セミナー2025 発表資料)NTT DATA Technology & Innovation
?
PGConf.dev 2025 参加レポート
(JPUG総会併設セミナー2025 発表資料)
2025年6月14日(土)
NTTデータ
OSSビジネス推進室
貞弘 泰輔、池田 凛太郎Featured (20)
Storytelling For The Web: Integrate Storytelling in your Design Process
Storytelling For The Web: Integrate Storytelling in your Design ProcessChiara Aliotta
?
The document outlines a livestream presentation by Chiara Aliotta on integrating storytelling into web design to enhance user experiences. It covers the storytelling process for designers, emphasizing aspects such as understanding the audience, structuring narratives, and creating emotional connections. The presentation also includes case studies and practical examples to demonstrate effective storytelling in UX/UI design.Artificial Intelligence, Data and Competition – SCHREPEL – June 2024 OECD dis...
Artificial Intelligence, Data and Competition – SCHREPEL – June 2024 OECD dis...OECD Directorate for Financial and Enterprise Affairs
?
This presentation by Thibault Schrepel, Associate Professor of Law at Vrije Universiteit Amsterdam University, was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
How to Leverage AI to Boost Employee Wellness - Lydia Di Francesco - SocialHR...
How to Leverage AI to Boost Employee Wellness - Lydia Di Francesco - SocialHR...SocialHRCamp
?
The document discusses leveraging AI to enhance employee wellness through data analytics, automating tasks, and personalized wellness apps, emphasizing the shared responsibility of employee well-being between leaders and organizations. It outlines best practices for using AI in wellness strategies, including ensuring data privacy and security, understanding employee needs, and promoting inclusivity. Lydia Di Francesco, a wellness specialist, shares insights to optimize workplace wellness strategy using AI-driven data analytics and encourages collaboration and transparency.2024 State of Marketing Report – by Hubspot
2024 State of Marketing Report – by HubspotMarius Sescu
?
The State of Marketing 2024 report highlights the transformative impact of AI and automation, emphasizing the importance of personalization and engagement to drive growth in a competitive landscape. Marketers are focusing on optimizing budgets, leveraging social media for brand awareness, and utilizing AI tools to enhance efficiency across tasks. Key trends for 2024 include the rise of experiential marketing, content creation that meets user needs, and strengthened connections through personalized customer experiences.Everything You Need To Know About ChatGPT
Everything You Need To Know About ChatGPTExpeed Software
?
ChatGPT is an AI chatbot developed by OpenAI, built on advanced language models to facilitate human-like conversational interactions. Launched in November 2022, it utilizes a transformer architecture to understand and generate text, with applications ranging from content creation to customer service. Despite its capabilities, there are concerns about potential misuse and biases in its responses, which OpenAI aims to mitigate through moderation and user feedback.Product Design Trends in 2024 | Teenage Engineerings
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
?
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.How Race, Age and Gender Shape Attitudes Towards Mental Health
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
?
The November 2023 mental health report indicates that 70% of respondents rate their mental health as 'good' or 'excellent,' with higher diagnoses reported among African Americans and non-Hispanic whites compared to Hispanics and Asians. Younger generations, particularly Gen Z and millennials, are more likely to experience mental health challenges, seek information online, and report that their mental health impacts their work and relationships. Half of the respondents feel comfortable discussing their mental health with professionals, although Gen Z shows the least comfort in this area.AI Trends in Creative Operations 2024 by Artwork Flow.pdf
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
?
Creative operations teams expect increased AI use in 2024. Currently, over half of tasks are not AI-enabled, but this is expected to decrease in the coming year. ChatGPT is the most popular AI tool currently. Business leaders are more actively exploring AI benefits than individual contributors. Most respondents do not believe AI will impact workforce size in 2024. However, some inhibitions still exist around AI accuracy and lack of understanding. Creatives primarily want to use AI to save time on mundane tasks and boost productivity.Skeleton Culture Code
Skeleton Culture CodeSkeleton Technologies
?
Organizational culture includes values, norms, systems, symbols, language, assumptions, beliefs, and habits that influence employee behaviors and how people interpret those behaviors. It is important because culture can help or hinder a company's success. Some key aspects of Netflix's culture that help it achieve results include hiring smartly so every position has stars, focusing on attitude over just aptitude, and having a strict policy against peacocks, whiners, and jerks.PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024Neil Kimberley
?
PepsiCo provided a safe harbor statement noting that any forward-looking statements are based on currently available information and are subject to risks and uncertainties. It also provided information on non-GAAP measures and directing readers to its website for disclosure and reconciliation. The document then discussed PepsiCo's business overview, including that it is a global beverage and convenient food company with iconic brands, $91 billion in net revenue in 2023, and nearly $14 billion in core operating profit. It operates through a divisional structure with a focus on local consumers.Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)contently
?
This document provides an overview of content methodology best practices. It defines content methodology as establishing objectives, KPIs, and a culture of continuous learning and iteration. An effective methodology focuses on connecting with audiences, creating optimal content, and optimizing processes. It also discusses why a methodology is needed due to the competitive landscape, proliferation of channels, and opportunities for improvement. Components of an effective methodology include defining objectives and KPIs, audience analysis, identifying opportunities, and evaluating resources. The document concludes with recommendations around creating a content plan, testing and optimizing content over 90 days.How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024Albert Qian
?
The document provides guidance on preparing a job search for 2024. It discusses the state of the job market, focusing on growth in AI and healthcare but also continued layoffs. It recommends figuring out what you want to do by researching interests and skills, then conducting informational interviews. The job search should involve building a personal brand on LinkedIn, actively applying to jobs, tailoring resumes and interviews, maintaining job hunting as a habit, and continuing self-improvement. Once hired, the document advises setting new goals and keeping skills and networking active in case of future opportunities.Social Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie InsightsKurio // The Social Media Age(ncy)
?
The 2024 social media marketing trends report highlights significant shifts influenced by generative AI, including the emergence of personalized content, the rise of virtual influencers, and a stronger focus on user-generated content. Insights were gathered from 33 experts across 23 leading independent agencies, providing a perspective that emphasizes creativity and authenticity in marketing strategies. Key trends also include the blending of B2B and B2C approaches, reflecting changes in consumer behavior and the evolving landscape of social media engagement.Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
?
The document discusses trends in paid search for 2024, highlighting changes in user behavior, the implications for financial services, and privacy challenges. It emphasizes the importance of adapting search strategies, utilizing AI-driven tools like performance max and smart bidding, and leveraging first-party data for better marketing efficacy. Key takeaways include holistic SEO and SEM approaches, monitoring shifting user intents, and the need for continuous performance evaluation.5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summarySpeakerHub
?
The document outlines five public speaking tips from Chris Anderson, TED Talks curator, emphasizing the importance of eye contact, vulnerability, humor, humility, and storytelling. These skills are presented as essential for engaging audiences effectively and are increasingly valuable in today's economy. The article posits that mastering these techniques can enhance speakers' ability to communicate ideas powerfully.ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
?
The document provides an overview of generative AI, particularly focusing on ChatGPT and its implications for business and the job market. It discusses the rapid growth of generative AI, its applications in marketing, and the skills needed for the AI era while addressing potential job displacement and the need for adaptation. The agenda includes a Q&A session and emphasizes rethinking work in collaboration with AI technology.Getting into the tech field. what next
Getting into the tech field. what next Tessa Mero
?
The document provides career advice for getting into the tech field, including:
- Doing projects and internships in college to build a portfolio.
- Learning about different roles and technologies through industry research.
- Contributing to open source projects to build experience and network.
- Developing a personal brand through a website and social media presence.
- Networking through events, communities, and finding a mentor.
- Practicing interviews through mock interviews and whiteboarding coding questions.Google's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search IntentLily Ray
?
1. Core updates from Google periodically change how its algorithms assess and rank websites and pages. This can impact rankings through shifts in user intent, site quality issues being caught up to, world events influencing queries, and overhauls to search like the E-A-T framework.
2. There are many possible user intents beyond just transactional, navigational and informational. Identifying intent shifts is important during core updates. Sites may need to optimize for new intents through different content types and sections.
3. Responding effectively to core updates requires analyzing "before and after" data to understand changes, identifying new intents or page types, and ensuring content matches appropriate intents across video, images, knowledge graphs and more.How to have difficult conversations
How to have difficult conversations Rajiv Jayarajah, MAppComm, ACC
?
The document provides essential tips on how to handle difficult conversations in a workplace setting, emphasizing the importance of preparation, environment, and timing. It highlights that many employees dread such conversations, often leading to avoidance and worsening situations. Ultimately, the guide aims to promote positive outcomes while maintaining professional relationships.Introduction to Data Science
Introduction to Data ScienceChristy Abraham Joy
?
The document discusses the rise and importance of data science and machine learning, highlighting the growing demand for data scientists and the challenges they face. It explains machine learning concepts such as supervised and unsupervised learning, along with various real-world applications and the necessary steps involved in a machine learning workflow. Additionally, the document emphasizes the iterative process of model improvement and feature engineering used to enhance machine learning outcomes.Artificial Intelligence, Data and Competition – SCHREPEL – June 2024 OECD dis...
Artificial Intelligence, Data and Competition – SCHREPEL – June 2024 OECD dis...OECD Directorate for Financial and Enterprise Affairs
?
Ad
2013/08/24 LLまつり 天文学におけるLL利用の過去と現在
- 1. 天文学におけるLL利用の過去と現在 東京大学カブリ数物連携宇宙研究機構 (Kavli IPMU, Univ of Tokyo) 下農 淳司 (@himorin)
- 2. Agenda ? 観測天文学ってなにやってるの？ – “ソフトウェア”的にそんなに特殊ではないで す！ ? 観測データの処理?解析 – 写真の時代から電算処理 – 最近のトレンドとLLへのながれ ? 観測のための装置 – 望遠鏡から観測装置まで
- 4. 観測天文学って？ 大雑把にいうと – 望遠鏡 (光を集めるバケツ) で天体の光を集める ? より大口径の方がバケツの効率がいい！が、年に数日 しか使えないより占有の中口径望遠鏡がトータルでは いいかも – 集まった光を装置に流して加工(フィルター?分 光) – 加工した光を検出器に入れて電子データ化する ? もっとも、大昔は眼視とか写真乾板だったわけです ? デジカメの親玉みたいなもん（サイズは桁で違います が – 観測で得たデータを解析ソフトで物理量に解析 ? 基本的に生データは公開なので捏造できない – たとえばすばるでは18ヵ月後から、太陽観測だと即時、と か ? とはいえ、見えた！と思った天体を追観測したらノイ
- 7. 天文データ取得の歴史 D. E. Groom, SPIE 4008-70, 2000 A. Tyson, AJ, 96, 1988
- 8. 観測の電子化によるデータ解析の変化 IRAF : Image Reduction and Analysis Facilities 1980年代初頭からNOAOで開発が始まった、画像?データ処 理のためのソフトウェアパッケージ群＋コマンド?スクリプ ト機能 IDL : Interactive Data Language 1970年代後半から開発が始まった、ベクトル型数値データを 大量処理することに最適化された対話型のスクリプト実行環 境 組込?別途で配布されている、または作成したデータ 解析モジュールを呼び出す形で動作し、対話型処理と その内容をスクリプトとして記述して自動的に処理す る機能を持つ、のが基本。
- 10. 2000年～の画像データの大規模化と解析環境の変 化 とはいえ、大規模化といってもしょせん画像なので素粒 子業界ほどのデータにはなりません。(ただし、光量が捨 てるほどあってかつ大きい太陽や、電波?光学干渉計を 除く。) 1998 SDSS @ APO (120M pixel) 1999 Suprime @ Subaru (80M pixel) 2013 HSC @ Subaru (832M pixel)
- 11. 2000年～の画像データの大規模化と解析環境の変 化 2000年頃からイメージサイズの大容量化と自動化され た大規模観測(サーベイ)が行われるようになり、デー タ処理方式にも影響。 – 大容量画像を高速に扱えるようにという要望が – サーベイが数十～数百晩分のデータになり自動解析へ IRAFよりも高機能で移行しやすいLL処理系が出て、移 行する人も出てきた – 自動解析環境を構築する上でやりやすい – PythonとIRAFのモジュールの統合というpyrafパッケージ – さまざまな基本的な処理をまとめたastropyパッケージ 使い勝手がいいのがでたから利用しよう！というだけ、ともいうかも
- 12. PyRAF http://www.stsci.edu/institute/software_hardware/pyraf ? IRAFのコマンドライン(CL)をリプレース – Pythonのネイティブのコマンドラインに、ではない (!) – IRAFのコマンド群はCLと同様に実行できる ? スクリプト機能はPythonに – “import iraf”でコマンド群を関数として読み込む – PyRAFのコマンドライン内でなくても利用可能
- 13. astropy http://arxiv.org/abs/1307.6212 astro-ph/1307.6212 : Astropy: A Community Python Package for Astronomy http://www.astropy.org/ Pythonがデータ解析やそれ以外にも幅広く利用されるよう になり、さまざまな人がPythonモジュールを作成?公開す るようになったので、インターフェースなどを統一的にし て、かつ一つのパッケージにしよう、というコラボレー ション。 天文業界では誰もが使うようなモジュールが数多く入って いる。 逆に、ふつーは使わないからこうでもしないと不便ともい
- 14. astropy astropy.time : 時間の取り扱い UTC : 協定世界時 TT : 地球時 TAI : 国際原子時 TCG : 地心座標時 TDB : 太陽系力学時 TCB : 太陽系座標時 astropy.cosmology : 宇宙論パラメータの計算 cosmology.H(0) : デフォルトでは7year WMAPの観測結 果 FlatLambdaCDM : 曲率なしFLRWモデル
- 15. 観測のための装置 "In addition, changing to a 2.4-meter mirror would lessen fabrication costs by using manufacturing technologies developed for military spy satellites.“ (Marshall Space Flight Center, Power to Explore, Chap.12 The Hubble Space Telescope)
- 16. 天文”光学”観測 いろいろな方式の観測を行えるよう、一つの望遠 鏡に複数の”観測装置”がつけられることが多い → 望遠鏡と観測装置は別制御 全体をまとめて制御するシステムも必要 それぞれの”観測装置”自体は – メカもの (シャッター?フィルターや焦点合わせ機構) – 検出器本体とその真空冷却装置 が主な構成要素です。
- 17. システムとしての望遠鏡の例 APO (USA) 3.5m 望遠鏡の制御システム構造図 すばる望遠鏡の観測制御室モニター
- 18. システム構築としての観測装置制御 大学?研究所での自家開発がかなり多い – それぞれの機関ごとの趣味が反映される 地上?宇宙ではやはり違う – 打ち上げたらオンサイトデバッグできないですし – とはいえ4000mの高地でデバッグするのってのも意外と大 変 – 地上屋さんが打ち上げたり、打ち上げ屋さんが地上やると 大変 ? 真面目に”It’s not a rocket science!”と叫んだこともあります。。 ? そもそも文化とか大前提が違うので感覚が、、、 制御機械のすべてがネットワークにつながる時代 – 装置?OS依存というのはあまりない – とはいえ、いまだに検出器周りはそれなりに大変です ? いろんな意味で。。
- 21. カメラ?検出器制御とデータの 扱い Images from Teledyne Catalogue (Cleared for Public Release by the DoD‘s Office of Security Review, Case 12-S-1869 / Case 12-S-1870)
- 22. お?し?ま?い
- 23. (backup)