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Topic: Ilities

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	[No title]
		Ilities are architectural properties that often can cut across different levels or components of a system's architecture to be properties of the whole.
		Although ilities are sometimes invisible properties of the system as a whole, they represent real (though perhaps unspoken or even unrealized) customer requirements.
		It's time for the OMG architecture to address other ilities, such as interoperability through time and space---that is, the ability to evolve to meet new demands.
	www.omg.org /docs/ormsc/97-09-01.doc (3870 words)

	Arctec Group: Strategic Technology Blueprints
		The job of the architect is to assist the ility experts in decomposing each vertical slice and synthesizing these vertical slices into a holistic foundation that elegantly supports the functional requirements and the more abstract non-functional requirements.
		In many projects, one or two ilities may get elevated to a high status (for one reason or another) and may drown out the other non-functional requirements to the detriment of the whole.
		Assuming that value proposition arguments provided by the proponents of each ility community are true, then this is not a zero sum game and elevating, say, performance to the highest priority at the cost of every other ility has impacts which should be quantified and studied.
	www.arctecgroup.net /0501.htm (1058 words)

	Compositional Software Architecture "ilities" for Wireless Networks
		It is an obvious "ility" optimization strategy to allocate the objects most frequently accessed by the mobile user to network nodes at cell sites that are the closest to her current location.
		The trade-off between the "ilities" also determine the traffic degradation around specific cell-sites and the fail-over time, should a cell-site step in to take over certain functions of a failed site in the proximity.
		Typically, the primary problem with architecting systems is not simply guaranteeing the required degree of performance, security, reliability, etc. The difficulty lies in guarantying the ability to change the weighting on their importance for specific application environments and circumstances with minimum efforts required for changing the software.
	www.objs.com /workshops/ws9801/papers/paper106.html (1023 words)

	Systemic Properties (-ilities) and Quality of Service
		This report describes the general problem area of providing ilities and QoS in component-based systems, describes several common technical themes identified by the various groups working on this problem, and describes the range of future work necessary to solve this problem.
		ilities such as reliability permeates the design and implementation of the system as a whole, and may involve detailed considerations in many of the system's components.
		Such considerations make it clear that it is difficult to draw a line between "ilities" and "QoS", and in fact increasingly these issues are being considered as part of a common problem.
	www.objs.com /aits/9901-iquos.html (10196 words)

	Because Every Complicated Technology Needs It .: Manageability :.
		I fundamentally understood that a lot of the complexities had to do with the mingling of functionality and 'ilities' into frequently an incomprehensible and inextricable mess.
		Manageability is one of those 'ilities', but it's one of the more intriguing ones.
		It was reasonably nebulous and at the same time alluded to the balance of chaos and order constantly required for any complex technology.
	www.manageability.org (528 words)

	Lorem ipsum dolor sit amet
		System “ilities” such as flexibility, adaptability, agility, robustness (the ility without ility) allow systems to face lifecycle changes and continue to provide value delivery.
		A system may be flexible, agile, adaptive and/or robust with regards to one set of changes and not have the same property with regards to other changes.
		My broad theoretical research interest is the integration of various “ilities” into design in order to enable the system to deal with potential lifecycle change.
	web.mit.edu /roshanak/www/se.htm (178 words)

	Column info : Quality: What a Fuzzy Term (Site not responding. Last check: 2007-11-03)
		The authors ilities no doubt forms a part of quality but there is nothing called good quality, bad quality and so on and the ilities can't in full terms define "Quality".
		The “ilities” referred to within the article are attributes to focus on, as hopefully, these “ilities” (Quality Requirements) are identified by the customer and end-user populations.
		Quality-the "ilities", relationship to the different factors depends on two major factors- they're -the Users perspective towards what he/she terms as quality and his/her ability to convince everybody/anybody that what they see is "THE BEST QUALITY".
	www.stickyminds.com /se/S2409.asp (3672 words)

	Column info : Revisiting the Definition of Software Quality (Site not responding. Last check: 2007-11-03)
		You’ll probably notice the ordering I’ve put on these “ilities.” If there were such a thing as a universal ordering, this would be my choice—reliability first (the software has to work), portability last (platform independence doesn’t matter for many software systems).
		In fact, ordering the “ilities” at the beginning of a project is a vital, identifiable task—and one in which your customers/users must participate.
		I suggest that Glass' ilities are not the quality itself but a model for measuring it by focusing us on values that someone, say potential customers, might believe important.
	www.stickyminds.com /sitewide.asp?Function=edetail&ObjectType=COL&ObjectId=2909 (3045 words)

	MITRE - News and Events - 2005 Technology Symposium - Enterprise and Systems Architecture and Engineering
		The team will query the systems engineering community to find example historical systems, research the design tenets that enabled positive performance, and determine the incremental cost of including the ilities in the original system design.
		The team will also research comparison systems that failed to perform well in the ilities and will then apply these concepts to current-day systems.
		This research will aid program managers to make wise short-term and long-term decisions, extend the operational lifetime of future systems as a result of adding the ilities related design tenets, and decrease initial and lifetime system costs.
	www.mitre.org /news/events/tech06/1.html (1042 words)

	E-Commerce
		As shown in Table 8.2, their list is dominated by property names suffixed with "ility," and thus the list is referred to as the ilities of architecture.
		Unlike simple functionality, ilities can include tradeoffs - for example, enhanced interoperability may have been produced at the cost of lesser security.
		The enterprise architect or system architect is responsible for ensuring such ilities, and a most appropriate task for an architectural framework is to support them." In total, these ilities create the ability to evolve and meet new demands of the business.
	www.angelfire.com /biz/khawar/ecommarch4.html (3065 words)

	Message-Oriented Middleware and the Software Engineer (Site not responding. Last check: 2007-11-03)
		In this paper, I present a broad characterization of Internet-scale messaging systems; and a characterization of 'ilities' which are promoted or inhibited by aspects of messaging systems.
		This floundering team didn't have an accurate understanding of the characteristics of its messaging systems nor how those characteristics impacted their desired 'ilities': efficiency, reliability, security, testability, and fault-tolerance.
		Generically, a message-oriented middleware layer accepts an envelope of bits to be transferred to some (set of) endpoint(s).In my model, there is further variation along three axes: the format of the artifact (bits), the namespace of endpoints, and the transfer algorithm.
	www.4k-associates.com /moma.html (4862 words)

	Introduction to Software Security > The 'ilities (Site not responding. Last check: 2007-11-03)
		Security is not a feature you can add to a system at any time.
		Security is like safety, dependability, reliability, or any other software 'ility.
		Each 'ility is a systemwide emergent property that requires advance planning and careful design.
	www.informit.com /articles/article.asp?p=23950&seqNum=6 (917 words)

	Software's Best Kept Secret: 'ilities'
		Convinced that these nonfunctional requirements are not as critical to the end product as functional requirements, ilities are rarely documented or even understood.
		If you truly want to gain a sustainable competitive advantage over your competitors, follow this simple advice: Find out which external nonfunctional requirements are critical to your specific domain or industry and then gather, document and test these ilities as if they're all that matter.
		Because once your competitors have copied all your functional secrets, ilities ARE all that matter.
	www.gantthead.com /article.cfm?ID=223170 (1126 words)

	122 Ility Lists : ICS 122 Software Specification and Quality Engineering : Thomas Alspaugh : UCI
		This problem is difficult enough now, but as machine types continue to proliferate, it will get worse and worse.’
		Boehm, Brown, and Lipow's definitions of 23 ilities
		Some of their ility descriptions are essentially lists of quantities that can be measured.
	www.ics.uci.edu /~alspaugh/2004-05/ics122/ics122-ilityLists.html (1737 words)

	Talk:Ilities - Wikipedia, the free encyclopedia
		I think a new category is needed: Category:Ilities.
		This page should be in an Ilities category, along with all the *ility articles this page links to.
		This page was last modified 19:05, 22 September 2006.
	en.wikipedia.org /wiki/Talk:Ilities (77 words)

	Advanced Distributed Learning - SCORM® General Common Questions (Site not responding. Last check: 2007-11-03)
		In the process, ADL also found that the federal government at large, the private sector and academia had similar performance and cost savings needs.
		These needs or the requirements to meet them became known as the "ilities," which are interoperability, affordability, durability, reusability and accessibility.
		These "ilities" address the needs within the DoD training/education/performance support communities, as well as in the rest of government, academia and industry.
	www.adlnet.gov /help/CommonQuestions/SCORMGeneralQuestions.cfm (3347 words)

	Non Functional Requirements
		Non Functional Requirements have also been called the 'ilities' because they are most simply expressed like this:
		Now that you can measure your success when its done, perhaps you should also have a way of predicting the ilities before you finish the product.
		I think scalability should also be considered a NonFunctionalRequirement.
	c2.com /cgi/wiki?NonFunctionalRequirements (1279 words)

	The CATS Board
		Besides, the distinction between performance and the ilities isn't so sharp: One of the easiest ways to improve the durability and reliability of a machine is to operate it at less than its design maximum output; thus, investments in performance margin ARE investments in the ilities.
		F'rinstance, rockets would be a lot simpler without regen cooling, or for that matter, without any sort of active cooling...
		but to make an engine that observes all the ilities AND maintains acceptable performance levels without any active cooling won't be easy; in fact, it'll probably require some pretty sophisticated technology at the detail level to do it.
	www.space-frontier.org /cgi-bin/BBS/CP1/read/2448 (1002 words)

	Robert Filman (Site not responding. Last check: 2007-11-03)
		Robert E. Filman, Stu Barrett, Diana Lee, and Ted Linden, "Inserting Ilities by Controlling Communications," Communications of the ACM, Vol.
		Robert E. Filman, "Managing Ilities," Component-Based Software Engineering Workshop, International Conference on Software Engineering 98, Kyoto, April 1998, pp.
		Robert E. Filman, "Injecting Ilities," Aspect-Oriented Programming Workshop, International Conference on Software Engineering 98, Kyoto, April 1998.
	ic.arc.nasa.gov /people/filman (1958 words)

	Inserting Ilities by Controlling Communications - Filman, Barrett, Lee, Linden (ResearchIndex) (Site not responding. Last check: 2007-11-03)
		If your firewall is blocking outgoing connections to port 3125, you can use these links to download local copies.
		Abstract: This paper describes a system that enables a more complete separation of ility implementations from functional components, allowing ilities to be developed, maintained, and modified with minimal impact on functional implementations.
		Filman, R. E., Barrett, S., Lee, D. D., and Linden, T. Inserting Ilities by Controlling Communications.
	citeseer.ist.psu.edu /332827.html (406 words)

	Achieving Ilities - Filman (ResearchIndex) (Site not responding. Last check: 2007-11-03)
		0.7: Inserting Ilities by Controlling Communications - Filman, Barrett, Lee, Linden
		Robert E. Filman, "Achieving Ilities," Workshop on Compositional Software Architectures, Monterey, California, Jan. 1998.
		@misc{ filman98achieving, author = "R. Filman", title = "Achieving Ilities", text = "Robert E. Filman, Achieving Ilities, Workshop on Compositional Software Architectures, Monterey, California, Jan. 1998.
	citeseer.ist.psu.edu /326610.html (325 words)

	Software Requirements: The Requirements Set > Product Constraints (Site not responding. Last check: 2007-11-03)
		Requirements Pattern, A: Succeeding in the Internet Economy
		Product constraints, in the information technology world, refer to the "ilities."
		To provide an example of different product constraints, the following six "ilities" are discussed in more detail below.
	www.informit.com /articles/article.asp?p=24470&seqNum=4 (2115 words)

	SOA in Action Blog
		Over the coming days, I will provide some snapshots and links to the interviews.
		Today, we start with Dan Foody, CTO of Progress Software, who talks about connecting SOA with all the essential "ilities" enterprises need to worry about -- reliability, scalability, manageability, flexibility -- and most importantly -- agility.
		What does it take to deliver agility through SOA?
	www.soainaction.com /blog/2006/11/connecting_soa_with_all_the_il.php (457 words)

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