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Topic: Structural stability

	Structural stability - Wikipedia, the free encyclopedia
		Structural stability is a mathematical concept concerning whether a given function is sensitive to a small perturbation.
		The general idea is that a function or flow is structurally stable if any other function or flow close enough to it has similar dynamics (from the topological viewpoint), which essentially means that the dynamics will not change under small perturbations.
		The concept of structural stability may be generalized to other spaces of functions with other topologies.
	en.wikipedia.org /wiki/Structural_stability (281 words)

	PlanetMath: structural stability (Site not responding. Last check: 2007-10-15)
		is structurally stable if there is a neighborhood
		Cross-references: small perturbations, function, spaces of functions, generated by, flow, generates, field, topologically equivalent, stable, vector field, topology, diffeomorphism, smooth manifold, compact, topologically conjugate, compact-open topology, mapping, neighborhood, homeomorphism, metric space
		This is version 5 of structural stability, born on 2003-07-29, modified 2003-07-29.
	www.planetmath.org /encyclopedia/StructuralStability.html (150 words)

	Functionalism (sociology) - Wikipedia, the free encyclopedia
		The whole of functionalism, originating as an alternative to historical explanations, was one of the first twentieth century anthropological theories, until it was superseded by structural functional analysis or structural-functionalism.
		Structural functionalism, a theoretical concept developed by other anthropologists like Claude Lévi-Strauss and Edmund Leach, takes the view that society consists of parts (e.g.
		In the 1960s, functionalism was criticized for being unable to account for social change or structuralist contradictions and conflict and thus often called "consensus theory." However, Durkheim used a radical form of guild socialism along with functionalist explanations.
	en.wikipedia.org /wiki/Functionalism_(sociology) (781 words)

	Using n Value as an Indicator of Soil Structural Stability
		Soil structure one of the most important soil physical properties is known as an indicator of the productivity of a given soil and also controls the severity of soil erosion.
		The objective of this study was to determine whether n value might be used as an indicator of soil structural stability or not.
		Structural stability index (SSI) by the sum of the difference between mechanical and aggregate analyses of silt plus clay fractions was introduced as a rapid technique for estimating structural stability of soils by Leo (1963).
	www.toprak.org.tr /isd/can_23.htm (2028 words)

	GLOSSARY OF JOIST AND STRUCTURAL TERMS
		Structural members which are inclined and are usually carrying axial load which enable a structural frame to behave as a truss to resist horizontal loads.
		A condition reached when a structure or structural member is loaded in which continued deformation results in a decrease in its load-resisting capacity.
		A structural member which is usually perpendicular to a joist and attaches under the outstanding leg of one of the joist top chord angles.
	www.hancockjoist.com /glossary.htm (12988 words)

	OSHA Steel Erection eTool: Structural Stability
		Since structural collapse is second only to falls as a cause of fatalities in this industry, stability is essential to the successful erection of any steel structure, including single- story, multi-story, bridges, etc. This section of the standard outlines the work practices that will prevent collapse due to lack of stability.
		Structural stability must be maintained at all times during the steel erection process [1926.754(a)].
		When plumbing-up equipment is used, it must be in place and properly installed before the structure is loaded with construction material such as loads of joists, bundles of decking, or bundles of bridging [1926.754(d)(2)].
	www.osha.gov /SLTC/etools/steelerection/structural.html (2898 words)

	Structural Stability of Hybrid Systems - Simic, Johansson, Lygeros, Sastry (ResearchIndex) (Site not responding. Last check: 2007-10-15)
		Structural stability for hybrid systems is introduced and analyzed in this framework.
		In particular, it is shown that a Zeno state is locally structurally stable and that a standard equilibrium on the boundary of a domain implies structural...
		6 Structural stability of two-dimensional manifolds (context) - Peixoto - 1962
	citeseer.ist.psu.edu /688669.html (541 words)

	[No title]
		Jointly sponsored with the Structural Stability Research Council, the course material was developed specifically for this presentation by a team of widely recognized educators and professional practitioners utilizing the specifications and codes detailed in the text Stability of Metal Structures, A World View, Second Edition, 1991.
		Structural engineers, designers, project managers, contractors, consultants and educators who either are currently or may become engaged in the international design and construction of steel structures.
		He is also a past chairman of the Structural Stability Research Council, and a member of ASCE, serving on several national technical committees, including a term as chairman of the Committee on Metals.
	www.uwm.edu /Dept/CCEE/8427.htm (803 words)

	dialog-discovery : live article (Site not responding. Last check: 2007-10-15)
		Chemical and thermal denaturation assays revealed that the stability of the protein is increased significantly in the presence of metal ions, said I. Benzaghou and colleagues, University of Sherbrooke, Faculty of Medicine.
		Structural analyses clearly established that metal ion binding increases hydrophobic exposure on the RNA polymerase surface.
		This mutational study underscores a strict requirement for each of the residues for metal binding, indicating that the active center of the HCV RNA polymerase is intolerant to virtually any perturbations of the metal coordination sphere, thereby highlighting the critical role of the enzyme-bound metal ions, said investigators.
	www.bioportfolio.co.uk /cgi-bin/dialogserver.exe?CMD=hit.displayMdoc&ID=41135&HITNO=7&MSIZE=359&LANGUAGE=en&FILE=doc.NEWSFEED&SAVEQUERY00=&SAVEDB=news_trial&SAVEORGANISE_CODED=R:date&SAVEB=G0NewsRxHepatitis&R=41135&THISHREF=file:/D:/newsedge/newsedge_07_02_2005/nitf/St_Nitf_Metal_ions_give_structural_sta_c0203010.8ws.xml&THEHOST= (521 words)

	13
		Following the success of the First and Second International Conferences on Structural Stability and Dynamics held in 2000 (Taipei) and 2002 (Singapore), this third Conference continues to provide an international forum for presentation of recent advances on various aspects of theories, analyses, experiments and designs related to structural stability and dynamics.
		Both abstracts and final papers will be fully reviewed by experts in the areas of structural stability and dynamics and the procedure will conform to the standards required for refereed conference papers.
		Please note that by submitting a paper, you are committing to have at least one author to register for the conference if the paper is accepted.
	ceprofs.tamu.edu /jreddy/icssd2005 (368 words)

	STRUCTURAL STABILITY AND DYNAMICS
		ICSSD 2002 is the second in the series of International Conferences on Structural Stability and Dynamics, which provides a forum for the exchange of ideas and experiences in structural stability and dynamics among academics, engineers, scientists and applied mathematicians.
		From the technical sessions, it is evident that well-known structural stability and dynamic theories and the computational tools have evolved to an even more advanced stage.
		All these papers are peer-reviewed, with excellent quality, and cover the topics of structural stability, structural dynamics, computational methods, wave propagation, nonlinear analysis, failure analysis, inverse problems, non-destructive evaluation, smart materials and structures, vibration control and seismic responses.
	www.worldscibooks.com /engineering/5180.html (408 words)

	Structural stability (Site not responding. Last check: 2007-10-15)
		Mutations of these residues destabilize the protein structure, which results in lower specific activity of the mutant enzymes, while affinity to chitosan substrate is almost unaffected.
		Other three residues that seem to be important for structural stability have been identified recently (57).
		The examination of the x-ray crystal structure reveals that Arg-205 is localized very closely to the catalytic residue Glu-22 and is involved in a network of interactions with Asp-145 and Arg-190.
	callisto.si.usherb.ca /~rbrzezin/stability.htm (206 words)

	pH Dependence of structural stability of interleukin-2 and granulocyte colony-stimulating factor -- Ricci et al. 12 ...
		The stability of IL-2 was determined by measuring the secondary
		In contrast, this increase in stability is not observed
		Cleland, J.L. and Wang, D.I.C. Equilibrium association of a molten globule intermediate in the refolding of bovine carbonic anhydrase.
	www.proteinscience.org /cgi/content/full/12/5/1030 (4663 words)

	Semiconductor device including a capacitor having improved structural stability and enhanced capacitance, and method of ... (Site not responding. Last check: 2007-10-15)
		In a method of manufacturing a semiconductor device including a capacitor having improved structural stability and enhanced capacitance, a contact region is formed on a surface portion of a semiconductor substrate.
		[0011] Impurities are implanted into portions of the semiconductor substrate 40 by an ion implantation process using the gate structures 60 as masks, thereby forming source/drain regions 50 and 55 at the portions of the substrate 40 between the gate structures 60.
		Further, the additional insulation layer 125 may not be precisely formed between the capacitors 120 having the complex structure so that the capacitors 120 may be inadvertently electrically connected to an upper wiring formed on the capacitors 120.
	www.freshpatents.com /Semiconductor-device-including-a-capacitor-having-improved-structural-stability-and-enhanced-capacitance-and-method-of-manufacturing-the-semiconductor-device-dt20050224ptan20050040448.php (1578 words)

	Post-Doctoral Positions Available (Site not responding. Last check: 2007-10-15)
		The environment for structural biology at the school is outstanding, with a new X-ray crystallographic facility, and protein analysis facility with ready access to instruments for calorimetry, circular dichroism, fluorescence, dynamic light scattering, and surface plasmon resonance.
		Study the structural biology of membrane proteins, membranes and biomimetic membranes using neutron reflectometry as part of a collaboration between the CSMB, the SNS and the CNS.
		Our structural studies will aim to determine how this fold recognizes such a large variety of structural motifs, and how this recognition event is translated into a signal in the cell that elicits an immune response.
	www.sdsc.edu /Xtal/ACA/Jobs/pd.html (9216 words)

	The Williams Lab
		Equilibrium Fluctuations and the Prediction of Structural Stability, Physics Colloquium, University of Illinois, September 1998.
		Equilibrium Fluctuations and the Prediction of Structural Stability, Physics Colloquium, Princeton University, March 1999.
		Equilibrium Fluctuations and the Prediction of Structural Stability, Physics Colloquium, Vanderbilt University, February 2000.
	www.physics.umd.edu /spg/talks.htm (812 words)

	Structural Stability ....
		Using total energy, force and stress minimization we optimize the structure and estimate ground state structural parameters.
		By calculating the cohesive energies and heat of formation for the optimized structure we are able to predict the structural stability of materials.
		Electronic structure, phase stability, equation of state and pressure dependent superconducting properties of Zr Al, Physical Rev.
	folk.uio.no /ravi/activity/structural/stability.html (94 words)

	Guiding Metaphors and Configuring Choices (Part II) (Site not responding. Last check: 2007-10-15)
		Whilst transforming simplistic structures, like conference agendas and organization charts, may pose little challenge, the transformation of the complex structures described earlier is quite another matter.
		The challenge in a policy-making environment is not to focus on this particular structure, but rather to use it as an example to persuade topologists to locate other transformational systems of this kind so as to build up a library of possibilities on which to draw.
		It is this meta-policy which is the appropriate and stable response to the complexity of the problematique, not the essentialy unstable policies which compose it (Judge, 1984a).
	www.laetusinpraesens.org /docs/guidmet2.php (6285 words)

	The structural stability of the HIV-1 protease. (Site not responding. Last check: 2007-10-15)
		A successful optimization of these strategies requires an accurate knowledge of the energetics of structural stabilization and binding, and the identification of those regions in the protease molecule that are critical to stability and function.
		The stability of the protease is pH-dependent and due to its dimeric nature is also concentration-dependent.
		At pH 5, the Gibbs energy of stabilization is 14.5 kcal/mol at 25 degreesC, consistent with a dissociation constant of 2.3x10(-11) M. The pH dependence of the Gibbs energy of stabilization indicates that between pH 3.4 and pH 5 an average of 3-4 ionizable groups per dimer become protonated upon unfolding.
	www.aegis.com /aidsline/1999/jan/A9910463.html (671 words)

	Structural Stability (Site not responding. Last check: 2007-10-15)
		Accomplishing this objective requires that the property enhancing microstructures of the laminates are stable under the severe operating conditions found in advanced jet engines.
		We are investigating the structural stability of refractory microlaminates using thermal and mechanical loading cycles and Nb/Nb Si
		The stability of the laminates during each of the tests is then assessed using a combination of pre and post-test structural characterizations.
	www.jhu.edu /matsci/people/faculty/weihs/group/group/StructStab.html (415 words)

	Structural Stability Testing (Site not responding. Last check: 2007-10-15)
		Tests for the structural stability of the parameters and the overidentifying restrictions can be performed by selecting the Stability entry, under the Testing field.
		Therefore, prior of performing a structural stability test, you need to use the GMM-GUI to get the full sample estimates.
		Recall that during the estimation you are asked to select a name under which your output will be saved (field: Output will be saved as); the name that you selected during the full sample GMM estimation is what you should input here.
	www4.ncsu.edu /~kkyriak/help/strstab.htm (464 words)

	New Guidelines On Structural Stability: News from David Ball Group
		With public access structures such as car parks and bridges coming under ever closer scrutiny for safety and stability, Concrete Bridge Development Group has set up a working group to produce a guide on "Testing Durability of Concrete Structures".
		A guidance manual for testing concrete structures will be produced which will enable asset managers to determine the remaining service life of their structures.
		The cost of testing should be viewed firstly as a safety measure and as a sound, long-term investment in the light of the serious consequences and costs involved should a structural collapse occur.
	www.buildingtalk.com /news/dav/dav104.html (339 words)

	The Role of Acidic Amino Acid Residues in the Structural Stability of Snake Cardiotoxins
		Comparison of the relative potencies of TFE and GdmHCl to induce structural changes suggests that the amino acid residue located at position 17 plays a role in the structural stability.
		In conclusion, the perturbed structural stability of CTXs may partially explain the lower activity CTX exhibits at acidic pH.
		A structural model to account for the unfolding and refolding of CTX molecules without the breaking of disulfide bonds is also proposed.
	pubs.acs.org /cgi-bin/abstract.cgi/bichaw/1996/35/i28/abs/bi960077t.html (348 words)

	Structural stability in uranium (Site not responding. Last check: 2007-10-15)
		The ground-state crystal structure of uranium is orthorhombic with three structural parameters: the axial ratios b/a and c/a, and an internal parameter y measuring the displacement, along the b-axis, of alternate planes.
		The experimental and theoretical results reported here indicate that one of these parameters, c/a, is substantially more sensitive to pressure than the other two, changing by as much as 5%, while b/a and y are constant within 1% within the pressure range studied.
		Theory suggests that electrostatic contributions to the total energy drive the variation in the c/a ratio as a function of pressure, and a simple model is utilized to show this.
	stacks.iop.org /0953-8984/9/L549 (351 words)

	JHT :: Evil, Structural Stability, and Predisposed Movements
		the molecular structure) starts to absorb energy from the universe, say for example, the employees start to argue with each other, wherein such friction leads to a strike, which leads to bankruptcy, then many employees (electrons) will subsequently both receive demotions (transfers to higher floor jobs) and/or lose their jobs (i.e.
		Here we see a connection between group structural integrity, stability, and what we might call the development of evil. Furthermore, as many have intuited through observation, these connected interactions are a cold yet inherent part of the natural process. A point in case is South African naturalist
		Using this technique, although she was a poor orphan at the age of six, her original use of jersey fabric to create a “poor girl” look attracted the attention of influential wealthy women who were ‘predisposed’ towards her fashion, seeking relief from prevalent corseted styles of their time.
	www.humanthermodynamics.com /JHT-evil-types.html (2604 words)

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