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Waiting for Gravity

Gravitational waves could give astronomers an unprecedented view into acts of astronomical violence

15 min read
Waiting for Gravity
Image: J. Hester and A. Loll/ArIzona State UniversIty/NASA/ESA

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imgSecrets of the Crab: The crab nebula (top) is perhaps the most conspicuous and well-known gaseous remnant of a supernova in themilky way galaxy. chinese astronomers first observed it on 4 July 1054. astronomers hope the laser interferometer Gravitational wave observatory (bottom) will be able to detect gravitational waves created by cosmic events like supernova explosions and galactic collisions.Image, Top: J. Hester and A. Loll/ArIzona State UniversIty/NASA/ESA; Photo, Bottom: LIGO

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Chameleon Skins Slash Building Energy Use

Investment of a small amount of energy can deliver big returns in energy savings

3 min read
looking up to high rise buildings and blue sky
iStock

Heating and cooling buildings consumes around 15 percent of the world’s energy supply, and this use is slated to go up in coming decades. The International Energy Agency predicts that the energy demand for cooling will more than triple by 2050 if nothing is done to address energy efficiency.

Now, taking inspiration from the color-changing skins of chameleons, two research groups have made dynamic, color-changing materials for building facades that could significantly reduce the energy footprint of air-conditioning and heating.

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Learn How Global Configuration Management and IBM CLM Work Together

In this presentation we will build the case for component-based requirements management

2 min read

This is a sponsored article brought to you by 321 Gang.

To fully support Requirements Management (RM) best practices, a tool needs to support traceability, versioning, reuse, and Product Line Engineering (PLE). This is especially true when designing large complex systems or systems that follow standards and regulations. Most modern requirement tools do a decent job of capturing requirements and related metadata. Some tools also support rudimentary mechanisms for baselining and traceability capabilities (“linking” requirements). The earlier versions of IBM DOORS Next supported a rich configurable traceability and even a rudimentary form of reuse. DOORS Next became a complete solution for managing requirements a few years ago when IBM invented and implemented Global Configuration Management (GCM) as part of its Engineering Lifecycle Management (ELM, formerly known as Collaborative Lifecycle Management or simply CLM) suite of integrated tools. On the surface, it seems that GCM just provides versioning capability, but it is so much more than that. GCM arms product/system development organizations with support for advanced requirement reuse, traceability that supports versioning, release management and variant management. It is also possible to manage collections of related Application Lifecycle Management (ALM) and Systems Engineering artifacts in a single configuration.

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