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Topic: Durability

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	Durability (computer science) - Wikipedia, the free encyclopedia
		In database systems, durability is the ACID property that guarantees that transactions that are successfully committed will survive permanently and will not be undone by system failure.
		Durability also guarantees that the system will not rollback the transaction because the seat was double-booked.
		Durability is usually implemented by flushing the transaction's log records to disk before acknowledging commitment.
	en.wikipedia.org /wiki/Durability_(computer_science) (189 words)

	Greener Buildings \| News & Columns \| Durability: A Key Component of Green Building (Site not responding. Last check: 2007-10-19)
		Durable products and materials will not need to be replaced or repaired as frequently, so the raw materials, energy, and environmental impacts invested in them can be spread out over more time.
		Durability is integral to the new LEED for Homes Rating System from the U.S. Green Building Council, which was released in a pilot version in August 2005.
		Even though steel and concrete are considered highly durable materials, 63% of the structural concrete buildings and 80% of the structural steel buildings that were demolished during this period were 50 years old or younger, while just 14% of the wood-frame buildings were in that age category.
	www.greenbiz.com /sites/greenerbuildings/news_detail.cfm?NewsID=29240 (3443 words)

	Enclosure Durability - Concepts of Durability
		The durability of the reinforcing steel is inferior to that of the concrete for the given service condition.
		When the inferior durability component reaches the end of its useful service life, the superior durability component is often replaced at the same time, resulting in an underutilization of its durability.
		Another facet of differential durability is associated with the degree of flexibility and adaptability in buildings, commonly referred to as functional obsolescence.
	www.cdnarchitect.com /asf/enclosure_durability/concepts_durability/concepts_durability.htm (1395 words)

	EPA: Federal Register: Component Durability Procedures for New Light-Duty Vehicles, Light-Duty Trucks and Heavy-Duty ...
		Component durability is a demonstration that all emission-related components are designed to operate properly for the full useful life of the vehicles in actual use.
		Requiring whole-vehicle testing for all durability groups would effectively defeat this aspect of CAP 2000 for many manufacturers, since those manufacturers that use bench aging would also be required to perform whole-vehicle testing, dramatically increasing their testing burden and it would provide only limited additional benefit in evaluating component durability.
		Durability groups are based on engine type, fuel type, fuel system, catalyst construction, type of precious metals used in the catalyst, and relative engine/catalyst size and loading rates.
	www.epa.gov /fedrgstr/EPA-AIR/2006/January/Day-17/a073.htm (10969 words)

	The Durability Factor - Precast Solutions Magazine Spring 2005
		By Gary K. Munkelt, P.E. Durability is a term that has grown in importance for several decades in the concrete industry.
		A durable product is created not because all producers adhere to available codes but because of the way the product is manufactured.
		The durability problems inherent in poured in place concrete have to do with the lack of repetition by those fabricating the structures and the lack of and sometimes absence of inspection.
	precast.org /publications/solutions/2005_spring/durability_factor.htm (1169 words)

	Durability - WoWWiki
		Durability damage is not the same as normal Damage.
		When you die, 10% durability is lost on all equipped items (that have a durability rating) This is 10% of maximum durability.
		You will not lose 10% durability if you are killed in PvP combat.
	www.wowwiki.com /Durability (337 words)

	durability aer 1982
		Durability and market structure are independent in all cases where average cost of service curves do not intersect.
		Durability is given by j-i+1 in the last period of the good’s existence.
		Since historical durability models have been put into a dichotomous model whereby the producer was assumed to either increase or not increase the durability of all units sold, we shall analyze the dichotomous ease for new-used models as well.
	www.utdallas.edu /~liebowit/knowledge_goods/durability/aer1982.html (5220 words)

	Asymmetry: Role-Playing: Earthdawn-ish: Durability
		Durability is a general ranking of how tough you are and how capable you are of surviving harsh conditions and, damage and wounds.
		The GM might occasionally call on you to make Durability checks to resist pain and that sort of this, but that's going to be fairly rare.
		Durability sub-skills indicate a greater ability to resist environments without being damaged, heal quickly and push your body beyond its normal limits.
	home.sprynet.com /~rjstevenson/rpg/earthdawn/durability.html (535 words)

	Durability (Site not responding. Last check: 2007-10-19)
		The most accurate and reliable measure of a carpet's durability is to test it under actual foot traffic.
		Although it is a time-consuming and expensive procedure, it is a proven, quantitative measure of the durability of a particular carpet style under virtual real-world conditions.
		The rating essentially shows the carpet's durability, or appearance retention, after a level of 20,000 foot-traffics.
	www.flooring-contractor.com /howtobuy/select/durability.html (119 words)

	Durability
		Whether you are building a new home or doing a small remodeling job, the more durable the materials, the less you'll have to pay in maintenance costs and the more value you'll get out of the home.
		While durability refers to materials (how long something will last in a home), quality refers to construction (how well something was installed or built).
		This paper was prepared for the National Forum on Durability Research to stimulate the thinking of the forum participants about the current state of durability of housing materials and components and about various approaches to improving durability.
	www.pathnet.org /sp.asp?id=1238 (596 words)

	Enclosure Durability - Durablity Design
		Durability, traditionally referred to as firmness, remains a cornerstone of sustainable architecture.
		Differential durability, when it is understood to include the service life of materials and assemblies, and the obsolescence of whole building systems, plays a significant role in the total building performance concept.
		It is especially important to consider the implications of premature failure, the accessibility of the component for inspection, maintenance, repair or replacement, and the consequences of premature failure.
	www.cdnarchitect.com /asf/enclosure_durability/durablitly_design/durability_design.htm (1541 words)

	Pirates, durability, and captured ships? - Flying Lab Software Forums
		My expectation is that a captured ship has one durability no matter who captures it.
		Your 15 durability ship can be captured 15 times producing 14 other ships of 1 durability each.
		Keeping durability would mean that the 15 ships from one parent would create 680 points of durability.
	www.flyinglab.com /forums/showthread.php?p=312127#post312127 (372 words)

	Concrete Technology and Construction \| Durability \| Portland Cement Association (PCA)
		Durability is the ability of concrete to resist weathering action, chemical attack, and abrasion while maintaining its desired engineering properties.
		The Specifer’s Guide for Durable Concrete is intended to provide sufficient information to allow the practitioner to select materials and mix design parameters to achieve durable concrete in a variety of environments.
		Under the heading of “Improved Durability of Concrete,” the field exposure durability studies at Treat Island have provided data useful in determining concrete’s resistance to frost attack, alkali-aggregate reaction, sulfate attack, and corrosion of steel with variable cementitious types and contents, aggregate types, chemical admixtures, and water-cementitous ratios.
	www.cement.org /tech/cct_durability.asp (889 words)

	Learning Resources
		Durability can be defined as the capacity of a product, component, system, building or structure to perform the function for which it was designed, be it aesthetic, structural or amenity for a specified period of time.
		Durability considerations are important in ensuring an appropriate life for the structure being designed.
		In Australia, there are a few timber buildings that are close to 200 years old, but in Europe there are some that are over 1000 years old.
	www.timber.org.au /NTEP/menu.asp?id=94 (169 words)

	Durability by Design: A Guide for Residential Builders and Designers (Site not responding. Last check: 2007-10-19)
		As a result, it is important to understand why certain practices have been effective (or ineffective) in the past so that they can be properly interpreted and considered in the design and construction of modern homes.
		This manual titled Durability by Design: A Guide for Residential Builders and Designers is intended to raise the awareness and understanding of building durability as a design consideration in housing.
		The contents of this Guide will help to preserve and promote ìtried-and-trueî practices and concepts related to housing durability, and present them in a manner that can be used to cost-effectively design the durable homes of the future.
	huduser.org /publications/destech/durdesign.html (297 words)

	Decking options \| Durability factors
		Unfortunately there are no precise numbers that are assigned to durability, and different testing bodies may give slightly different results for the same species.
		Under normal conditions, and not in permanent contact with water, such species can be expected to resist decay and insect attack for at least 25 years and up to 50 years.
		But there is no direct correlation between durability and resistance to termite attack so care needs to be taken in choosing the right lumber species in termite prone areas.
	www.ezydeck.net /Articles/decking-durability.htm (728 words)

	Roofing Durability (Site not responding. Last check: 2007-10-19)
		In engineering design terms, durability is the ability of a material to resist the external forces to which it is exposed during a set period.
		In the case of a roofing material, durability is the ability to resist the long-term effects of Mother Nature, including sun (UV rays), wind, hail, fire, heat, and cold.
		Other roofing products face greater challenges when making durability claims, since there are a significant number of products that need some form of UV protection, a lower water-absorption rate, or other protection to meet the higher standards for a longer life.
	www.westernroofing.net /Tile_Talk/tile_olson_7_06.htm (833 words)

	FUEL CELLS DURABILITY - 1st Edition Proceedings
		Electrocatalyst durability was examined by measuring the loss of electrochemical surface area occurring during fuel cell testing, including operation at constant voltage/current and simulating an automotive drive cycle.
		Key issues impacting the durability of catalysts and the stability of the membrane-electrode interface will be discussed and ways for improving DMFC performance durability will be suggested via the use of more stable components, modification of MEA fabrication approaches and application of various methods for performance recovery in an operating cell.
		Inadequate durability is one of the major hurdles to impede the large-scale commercialization of fuel cells.
	www.knowledgepress.com /events/4191158.htm (1401 words)

	Vinyl Institute - Environmental Attributes of Vinyl - Durability
		Finally, vinyl's toughness and durability make it the most widely used plastic for building and construction applications such as siding, windows, single-ply roofing membranes, fencing, decking, wallcoverings and flooring.
		This vinyl floor's strength and durability ensures it can withstand the toughest treatment dished out by up to 7,000 passengers hourly, and their luggage - the new capacity for which the upgraded passenger terminal was designed.
		Vinyl was chosen because it is weather resistant, durable, flexible, resistant to abrasion and has good stability in extreme temperatures.
	www.vinylinfo.org /attributes/durability.html (2147 words)

	GeosyntheticsTesting.com : Texas Research International, Inc.
		The durability of geosynthetics and geosynthetic systems is often measured to assure long-term performance.
		TRI is a world-wide leader in durability testing and offers considerable capabilities to meet regulatory-driven or product development needs.
		TRI responds to both environmental and load/construction durability concerns via large-scale and bench-scale testing of geosynthetics and their component materials.
	www.geosyntheticstesting.com /durability.php (65 words)

	Durability (Site not responding. Last check: 2007-10-19)
		Perhaps the most important consideration in choosing the lumber species to use for exterior decking is the durability characteristics of the lumber to be used.
		Sapwood of most hardwood species is non durable and will decay quite rapidly even if the heartwood itself is rated as highly durable.
		There is no direct correlation between durability and resistance to termite attack so care needs to be taken in termite prone areas.
	www.deckingtiles.com /articles/Decking_durability.htm (711 words)

	The Durability Alliance Partners
		Evaluating durability performance on a virtual prototype, before signing it off with a physical test, is the only valid alternative.
		LMS has a yearlong presence in durability CAE and embedded its advanced experience in one single environment, capable of assessing large flexible welded bodies and complex suspensions.
		LMS Virtual.Lab Durability reliably predicts the fatigue life of components and accurately identifies their critical locations, enabling you to implement design changes during the design phase.
	www.instron.com /thedurabilityalliance/partners.asp (700 words)

	Durability of pericardial versus porcine aortic valves -- Gao et al. 44 (2): 384 -- Journal of the American College of ...
		Durability of pericardial versus porcine aortic valves -- Gao et al.
		durability in the aortic position of elderly patients (8,12–15).
		Durability of porcine valves at fifteen years in a representative North American patient population.
	content.onlinejacc.org /cgi/content/full/44/2/384 (2553 words)

	Assessing Housing Durability: A Pilot Study (Site not responding. Last check: 2007-10-19)
		Durability is one of the least understood attributes of the nation's housing stock.
		The report also discusses lessons learned from the study with a view toward improved techniques should this effort be expanded to a regional or national level.
		The findings of this study not only demonstrate the feasibility of benchmarking and monitoring the durability of the nation's housing stock but also reveal the importance of certain design, construction, maintenance, and environmental factors related to durability.
	www.huduser.org /publications/destech/housing_durability.html (259 words)

	Log Home Durability
		In the “stick-built” frame construction that is standard building practice, shrinkage is not an important consideration when designing a structure; wood shrinks very little along the grain, so a stud in a wall won't change in length very much as the wood dries.
		The long-term durability of a log home also depends on a proper initial design.
		Today, the state boasts the highest concentration of log home manufacturers in the nation and is home to thousands of log buildings ranging from simple cabins to grand mansions.
	web.utk.edu /~tfpc/LogHomeDurability.htm (451 words)

	Senox Corporation - Moisture and Durability
		Moisture, in all its physical forms, is commonly regarded as the single greatest threat to the durability and long-term performance of residential homes.
		By controlling exposure to moisture, many other durability problems such as mold and indoor air quality, which can lead to unhealthy indoor living environments, can also be solved.
		It is intended to raise awareness and understanding of building durability as a design consideration in housing.
	www.senox.com /moisture.html (873 words)

	FUEL CELLS DURABILITY - Stationary • Automotive • Portable
		Further the durability of polymer electrolytes (including those designed for elevated temperature operation) in the context of its resistance to radical initiated chemical attack will be presented.
		The durability of the membrane can be enhanced via the addition of additives which result in low fluoride ion release and long MEA lifetime.
		Our NSTF catalyst offers superior durability over dispersed catalysts due to the lack of carbon as the metal support and the continuous, rather than discrete, thin film structure of the platinum, both of which contribute to a better preservation of the electrochemically active surface area of the catalyst.
	www.knowledgepress.com /events/6141444.htm (2662 words)

	The Durability Alliance Events (Site not responding. Last check: 2007-10-19)
		An integrated solution encapsulating all parts of the process - from road load data acquisition to durability load data processing, rig testing and virtual engineering - is key to accelerated durability test based engineering.
		The 2 days seminar on test based durability engineering is illustrated with solutions from the Durability Alliance, including Kistlers 6-DOF wheel force transducers, LMS' software for Durability Load Data Processing, Test Schedule Definition and CAE based Durability Engineering and Instron Structural Testing variety of rig testing solutions.
		Sessions are combined with visits to the Flanders' drive durability testing facilities for rig testing demonstrations and Lommel proving ground for real-life mobile data acquisition.
	www.instron.com /thedurabilityalliance/events.asp (139 words)

	Concrete Technology \| Concrete Durability: Treat Island Active Research \| Portland Cement Association (PCA)
		Investigate the durability of sulfur concrete (sulfur cement and fly ash are substituted for the portland cement-water paste).
		Study the effects of seawater on the corrosion of mild steel that was placed in RPC at different depths.
		Determine the durability of concrete containing aggregate larger than 1½ in.
	www.cement.org /tech/dur_treat_table.asp (445 words)

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