3.2 QSO spectra
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

Alex Halderman, Princeton University: "Securing the Electronic Ballot"
In the wake of the 2000 Florida recount debacle, many states turned to computer voting machines to increase election accuracy and security. Many computer scientists have long been skeptical of such machines, but only recently have researchers had access to them for study. In in his talk he describes how his colleagues and he examined several widely used electronic voting systems and discovered that they were susceptible to attacks that could alter election results and compromise the secrecy of
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Alex Halderman, Princeton University: "Securing the Electronic Ballot"
In the wake of the 2000 Florida recount debacle, many states turned to computer voting machines to increase election accuracy and security. Many computer scientists have long been skeptical of such machines, but only recently have researchers had access to them for study. In in his talk he describes how his colleagues and he examined several widely used electronic voting systems and discovered that they were susceptible to attacks that could alter election results and compromise the secrecy of
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Brian Kernighan: The Changing Face of Programming
The rapid evolution of languages, tools, environments, and expectations presents major challenges and opportunities for programmers and for software engineering education. This is true across all kinds of programming, but is especially so for Web systems, which are now routinely written in untyped scripting languages and include Ajax, mashups, toolkits, frameworks like Rails and Django, and a profusion of interfaces, all operating asynchronously on distributed systems. For the past 7 or 8 years
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Brian Kernighan: The Changing Face of Programming PDF
The rapid evolution of languages, tools, environments, and expectations presents major challenges and opportunities for programmers and for software engineering education. This is true across all kinds of programming, but is especially so for Web systems, which are now routinely written in untyped scripting languages and include Ajax, mashups, toolkits, frameworks like Rails and Django, and a profusion of interfaces, all operating asynchronously on distributed systems. For the past 7 or 8 years
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John Haldon, Princeton University: History, Remote Sensing, and GIS - The Avkat Survey Project
This talk introduces briefly the Avkat Archaeological Survey, a collaborative research project in north-central Anatolia which seeks to integrate a number of different approaches to studying the past, using recent technological advances to integrate disparate datasets into a cohesive framework of analysis. From the 1980s, there has been continued development of methodologies of archaeological field survey, as well as remote sensing techniques ranging from ground-penetrating radar to airborne rad
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John Haldon, Princeton University: History, Remote Sensing, and GIS - The Avkat Survey Project PDF
This talk introduces briefly the Avkat Archaeological Survey, a collaborative research project in north-central Anatolia which seeks to integrate a number of different approaches to studying the past, using recent technological advances to integrate disparate datasets into a cohesive framework of analysis. From the 1980s, there has been continued development of methodologies of archaeological field survey, as well as remote sensing techniques ranging from ground-penetrating radar to airborne rad
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Andrea LaPaugh: Foundations and Future of Information Search - March 4, 2009
Lunch 'n Learn presentation: Everyone googles - in the U.S, about 12 billion times a month (including search engines that aren’t Google). We are mostly pleased with the results we get. How can it be that we give an automated system a couple of words and it finds reasonably relevant documents among one hundred billion or so possibilities? Will our satisfaction with these tools increase or decrease as the Web and our expectations grow? Dr. LaPaugh gives a peek “under the hood” and discuss
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Andrea LaPaugh: Foundations and Future of Information Search PDF - March 4, 2009
Lunch 'n Learn presentation: Everyone googles - in the U.S, about 12 billion times a month (including search engines that aren’t Google). We are mostly pleased with the results we get. How can it be that we give an automated system a couple of words and it finds reasonably relevant documents among one hundred billion or so possibilities? Will our satisfaction with these tools increase or decrease as the Web and our expectations grow? Dr. LaPaugh gives a peek “under the hood” and discuss
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Matthew Botvinick: Computer Modeling of the Mind and Brain - May 6, 2009
Lunch 'n Learn presentation: Brain ==> Computation ==> Behavior. Matthew Botvinick's lab works at the intersection of neuroscience, psychology and computer science, seeking to clarify the computational and neural foundations of human behavior. In pursuit of this mission, they employ a diverse set of research tools, including functional neuroimaging (fMRI), behavioral techniques (reaction time, error, and decision analyses), and computational modeling (neural networks, reinforcement learning mod
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Matthew Botvinick: Computer Modeling of the Mind and Brain - May 6, 2009 PDF
Lunch 'n Learn presentation: Brain ==> Computation ==> Behavior. Matthew Botvinick's lab works at the intersection of neuroscience, psychology and computer science, seeking to clarify the computational and neural foundations of human behavior. In pursuit of this mission, they employ a diverse set of research tools, including functional neuroimaging (fMRI), behavioral techniques (reaction time, error, and decision analyses), and computational modeling (neural networks, reinforcement learning mod
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Szymon Rusinkiewicz: "Reassembling the Wall Paintings of Thera" - September 30, 2009
Lunch 'n Learn presentation: The archaeological site of Akrotiri on the volcanic island of Thera (modern-day Santorini, Greece) has yielded an unparalleled trove of artifacts and information from the prehistoric Aegean. The ancient civilization was destroyed by a volcanic eruption, which buried the remains of a flourishing Late Bronze Age (c. 1630 B.C.) settlement in ash. Among the most significant finds are numerous wall paintings, ranging from naturalistic and narrative scenes to abstract moti
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Simulations at the Petascale and Beyond for Fusion Energy Sciences - March 10, 2010
Lunch 'n Learn presentation: Major progress in magnetic fusion research has led to ITER – a multi-billion dollar burning plasma experiment supported by seven governments (EU, Japan, US, China, Korea, Russia, and India) representing over half of the world’s population. Currently under construction in Cadarache, France, it is designed to produce 500 million Watts of heat from fusion reactions for over 400 seconds with gain exceeding 10 – thereby demonstrating the scientific and technical fea
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Simulations at the Petascale and Beyond for Fusion Energy Sciences PDF - March 10, 2010
Lunch 'n Learn presentation: Major progress in magnetic fusion research has led to ITER – a multi-billion dollar burning plasma experiment supported by seven governments (EU, Japan, US, China, Korea, Russia, and India) representing over half of the world’s population. Currently under construction in Cadarache, France, it is designed to produce 500 million Watts of heat from fusion reactions for over 400 seconds with gain exceeding 10 – thereby demonstrating the scientific and technical fea
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The Missing Dimension of Stateness
While Professor Francis Fukuyama’s changing evaluation of the arguments of his one-time Neocon colleagues has illuminated major issues about American policy and the war in Iraq, his general thinking…
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The National Interest, Strategic Non-violence, and the Independence of East Timor
Dr Fernandes provides a critical evaluation of what is often portrayed as a noble moment in Australia's history of overseas interventions. He shows that a series of Australian strategists and policymakers…
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China's Policy Response to the Global Financial Crisis
Yu Yongding will be in Australia to deliver the Productivity Commission's Richard Snape Lecture for 2009. An Academician with Chinese Academy of Social Sciences, former Director-General of Institute of World Economics and Politics (1998- ), Professor with Post-Graduate School of Chinese Academy of Social Sciences, President of the China Society of World Economics (2001- ), Editor of China and World Economy, Associate Editor of Asian Economic Policy Review. He was formerly the academic member of
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Virtual leadership - Ashridge Journal Article
In today's virtual economy, virtual teams are a fact of ife. Drawing on three years research, Ghislaine Caulat examines the skills, competences and techniques needed by managers to lead teams successfully in a virtual environment.
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Tasks for First Spacewalk of Expedition 41
NASA Spacewalk Officer Jaclyn Kagey narrates this 3-D animation depicting the events scheduled for the Oct. 7 spacewalk. Astronauts Reid Wiseman and Alexander Gerst will work outside the International Space Station to stow a failed pump module, replace a television camera and install a mobile transporter relay assembly. More info... http://go.nasa.gov/1rJvJ62
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Veilig op het internet
internet.png

Een Symbaloopagina met interessante links naar websites over cyberpesten en veilig internet. Er zijn ook een aantal links naar filmpjes over dit onderwerp.


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