605 research outputs found

    A learning laboratory approach for business improvement : the case of discontinuous innovation

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    This paper considers the current situation within Australian manufacturing SMEs and their approaches to innovation and international competitive advantage. Using the viewpoint and language of complexity theory, we consider the variety of possibilities available to SMEs in this area. We then consider a particular international project on Discontinuous Innovation, how this has been deployed in Europe and Australia and the knowledge gained from our interactions with Australian SMEs to date around this project. Finally we consider the general development of a &ldquo;Learning Laboratory&rdquo; approach to working with SMEs and the differences required to make such approach successful in Europe and in different settings in Australia.<br /

    Measuring the performance of a regional cluster in innovation facilitation

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    Regional industry clusters have been promoted for several years as effective mechanisms to assist firms become more innovative and more competitive. But do they really achieve this goal, and more importantly, just how should an assessment of cluster performance in supporting and facilitating innovation within its members, be undertaken? In this paper we report on a study of a regional IT cluster in Western Sydney, Australia, develop some criteria for assessing the innovation facilitation performance of industry clusters, and discuss the cluster in relation to these criteria. We suggest that engagement with a cluster may enhance the innovation capacity of a firm, and the type of required innovation support varies significantly with the maturity and absorptive capacity of individual firms.<br /

    Consumer experiences of Chronic Obstructive Pulmonary Disease in regional Australia: A mixed methods study and logic model to identify consumer-experience mechanisms to avoid hospital and enhance outcomes

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    The objective of this study to explore consumer experiences of their care for Chronic Obstructive Pulmonary Disease (COPD) in a regional Australian hospital and to ascertain consumer identified contexts and mechanisms that can enhance consumer-experience outcomes. A sequential, explanatory mixed methods design was employed including a retrospective audit of COPD admissions and re-admissions and semi-structured interviews with a sample of consumers (n=12). Themes were synthesised using a realist framework and the Expanded Chronic Care Model to develop a logic model. Audit data identified above national average hospital admission rates and length of stay for treatment of COPD. Interview data revealed three key themes namely contexts of care, mechanisms for providing care, and outcomes of care. A logic model was constructed to highlight the necessary contexts and consumer-identified mechanisms that can be enacted to achieve consumer-valued outcomes. The model outlined factors at individual, provider and system levels in a regional and rural setting including interaction and relationships with health care providers; consumer capability; workforce; care pathway; capacity to offer services and support; and continuity of care. This research identifies that positive and continuous relationships are one of the most important consumer-identified mechanisms for influencing COPD consumer experience of their care and capacity to self-manage to stay out of hospital. This research challenges regional and rural health services to harness relationships and connectedness to improve consumer experiences and the impact of care for COPD consumers. The logic model provides a template to assist health services to rise to this challenge. Experience Framework This article is associated with the Patient, Family & Community Engagement lens of The Beryl Institute Experience Framework. (http://bit.ly/ExperienceFramework) Access other PXJ articles related to this lens. Access other resources related to this lens

    MicroFest 2005

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    EFFECTS OF SILLIMANITE-GRADE MET AMORPHISM AND SHEARING ON Nb-Ta OXIDE MINERALS IN GRANITIC PEGMATITES: MARS(KOV, NORTHERN MORAVIA, CZECHOSLOVAKIA

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    ABSTRACT 699 The (Be,Nb,Ta)-bearing albite-muscovite pegmatites at Mar5ikov, in the Hruby Jesenik Mountains pegmatite field of northern Moravia, Czechoslovakia, were subjected to a two-stage, sillimanite-grade, regional metamorphism that reached about 600°C and 4-6 kbar, P(total) &gt; &gt; P(fluid). The first stage generated chrysoberyl at the expense of beryl, under relatively static conditions (pegmatite 1), whereas extensive shearing during a second stage produced a second generation of chrysoberyl, abundant sillimanite and a foliation (pegmatite III). The primary assemblage of the Nb-Ta oxide minerals consisted of manganocolumbite-manganotantalite displaying oscillatory zoning in terms of Nb and Ta, replaced by fersmite and rnicrolite (rarely pyrochlore). The columbite-tantalite was first recrystallized into &quot;bird&apos;s-eye&quot; oscillatory-zoned textures or heterogeneous granular aggregates. The original range of Ta/(Ta + Nb) values was commonly reduced, although locally expanded by contribution of additional Nb or Ta from incipient breakdown of fersrnite or microlite, respectively. Mn/(Mn +Fe) largely decreased, by as much as 0.40, by introduction of Fe from the host hornblende gneiss; Mg and Ti also were enriched. During the second metamorphic stage, the Ta/(Ta + Nb) value of columbite-tantalite was locally further homogenized, but Mn/(Mn +Fe) did not change. Fersmite and microlite were almost completely obliterated. Significant ordering of the originally intermediate structural state of columbite-tantalite was promoted during metamorphic recrystallization. This study documents extensive compositional and structural re-equilibration of Nb-Ta oxide minerals at medium-grade regional metamorphic conditions. This pattern of behavior contrasts with their virtual inertness in an environment of mylonitization

    Self-reported difficulty of smoking cessation among ex-smokers in the Israel Defense Force (IDF) career service personnel: observational study.

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    Introduction The smoking cessation literature focuses on assisted cessation despite evidence that most ex-smokers stopped without assistance. Professional literature, clinical guidelines and tobacco control policies suggest that smoking cessation is difficult especially if unassisted. We investigated under-researched aspects of unassisted smoking cessation, focusing on self-reported difficulty. Methods Between September 2013 and June 2015 all ex-smokers amongst IDF career personnel undergoing periodic medical examination completed a computerized questionnaire assessing their smoking cessation experience. Subjects were classified into two groups: those who found cessation difficult and those who did not. Socio-demographic characteristics and questionnaire responses were then compared. Results Of 1574 ex-smokers, 83.4% reported unassisted cessation. Cessation was reported as harder/much harder than expected by 7.1%, easier/much easier than expected by 50.0%, and as expected by 42.8%. Bedouin Israeli ex-smokers were significantly more likely than Jewish Israeli ex-smokers to report difficulty in smoking cessation (31.6% versus 6.9%, p=0.001). Ex-smokers who reduced smoking gradually before cessation were significantly more likely to report difficulty than those who stopped abruptly (10.2% versus 6.5%; p=0.025.) Ex-smokers who stopped within the last 6 months were significantly more likely to report difficulty than those who stopped over 6 months ago (13.6% versus 6.4%; p=0.025). This “memory decay” effect did not persist beyond 6 months. Conclusions The majority of ex-smokers stopped smoking unassisted and did not find cessation difficult, while 50.0% found it easier than expected. Further studies of successful cessation experiences of ex-smokers are warranted

    Stranded and equilibrated assemblages of late feldspars in two granitic pegmatites in the Pampean Ranges, Argentina

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    Late primary K-feldspar in two granitic pegmatites from the Pampean pegmatite province in Argentina shows similar patterns of growth and exsolution, but different structural states and mineral associations. (i) In El Criollo, a beryl - columbite - phosphate pegmatite in the Punilla pegmatite field, a single miarolitic cavity in the blocky zone is lined with pale rusty crystals of veinperthitic K-feldspar and quartz. The Kfs host, Or89.7 Ab7.8 Rbf0.3 LEf(? 1.1 (□Si4O8)1.2 (∌88 vol.%), corresponds to optically and XRD-monoclinic, but highly (Al,Si -ordered orthoclase (2t1 = 0.82), with only a slight incipient conversion to intermediate grid-twinned microcline along contacts with exsolved low albite, Ab98.1 An1.2 Or0.9 (∌12 vol.%). The homogeneous precursor of the perthite contained ∌22 mole % Abss. The perthitic orthoclase is overgrown, mainly on the {010} faces, by nonperthitic, gemmy, pale grey to beige orthoclase, Or91.6 Ab6.1 Rbf0.5 Cno.2 Srf0.1 LEf(?)0.2 (□Si4O8)1.5, with 2t1 equal to 0.84. Small tabular crystals of white low albite, Ab99.5 Or0.7, elongate parallel to c, are situated on the {010} faces of the orthoclase in epitactic orientation. (ii) In San Luis II, a spodumene pegmatite in El Totoral pegmatite field, crystals of coarsely perthitic K-feldspar and quartz line cavities in the core-margin zone. The mottled-grey euhedral K-feldspar, Or92.3 Ab4.1 Rbf1.1 Csf0.1 Cn0.1 Srf0.1 LEf(?)1.5 (□Si4O8)0.8 (∌92 vol.%), locally altered to muscovite and clay minerals, is very close to end-member low microcline with vein-shaped exsolution lamellae of low albite. Ab99.1 An0.1 Or0.4 Cn0.1 Srf0.1 (∌8 vol.%). The homogeneous precursor of the perthite contained ∌13 mole % Abss. All faces of the perthite crystals have an even overgrowth of pale grey, nonperthitic low microcline, Or92.8 Ab4.8 Rbf0.2 Srf0.1 LEf(? 1.8(□Si4O8)0.3. The cavity space among the crystals of the K-feldspar and primary quartz is largely filled by microcrystalline secondary quartz, "chalcedony", opal and goethite. Different subsolidus histories of the two host vugs explain the conspicuous contrast between the structural states of their cavity-lining K-feldspar. In El Criollo pegmatite, the cavity probably quickly lost residual aqueous fluid, as the orthoclase of both the primary perthitic crystals and particularly of the gemmy overgrowth show only stranded, coherent domain-scale order and twinning, and very limited alteration. In the San Luis II pegmatite, the cavity-lining K-feldspar shows considerable alteration and overgrowth by low-temperature phases, indicative of substantial hydrothermal activity, which promoted (Al,Si)-ordering to give tartan-twinned low microcline in both the primary perthitic crystals and the norperthitic overgrowths.Le feldspath potassique primaire qui s’est formĂ© tardivement dans deux pegmatites granitiques de la province pegmatitique de Pampea, en Argentine, montre des points communs en termes de croissance et d’exsolution, mais des diffĂ©rences marquĂ©es en termes du degrĂ© d’ordre et d’associations minĂ©rales. (i) A El Criollo, une pegmatite Ă  bĂ©ryl – columbite – phosphate du champ pegmatitique de Punilla, une seule cavitĂ© miarolitique de la zone Ă  cristaux polyĂ©driques est tapissĂ©e de cristaux pĂąles de couleur rouille de feldspath potassique, perthitique Ă  veines, avec quartz. L’hĂŽte dans cette perthite, Or89.7 Ab7.8 Rbf0.3 LEf(?)1.1 (Si4O8)1.2 (~88% en volume), correspond optiquement et en diffraction X Ă  une phase monoclinique (orthose) fortement ordonnĂ©e, avec 2t1 = 0.82, et un dĂ©but de conversion Ă  la microcline intermĂ©diaire avec maclage quadrillĂ© le long des contacts avec l’albite ordonnĂ©e exsolvĂ©e, Ab98.1 An1.2 Or0.9 (~12% en volume). Le prĂ©curseur homogĂšne de la perthite contenait ~22% Abss (base molaire). L’orthose perthitique est recouverte, surtout sur les faces {010}, d’une surcroissance d’orthose non perthitique, gemme, gris pĂąle Ă  beige, Or91.6 Ab6.1 Rbf0.5 Cn0.2 Srf0.1 LEf(?)0.2 (Si4O8)1.5, avec 2t1 egal Ă  0.84. De petits cristaux tabulaires blancs d’albite ordonnĂ©e, Ab99.5 Or0.7, allongĂ©s parallĂšles Ă  c, recouvrent les faces {110} de l’orthose, en relation Ă©pitactique. (ii) A San Luis II, une pegmatite Ă  spodumĂšne du champ de El Totoral, des cristaux grossiers et perthitiques de feldspath potassique et de quartz tapissent les cavitĂ©s de la zone externe du coeur du massif. Les cristaux idiomorphes de feldspath potassique sont gris nuagĂ©, Or92.3 Ab4.1 Rbf1.1 Csf0.1 Cn0.1 Srf0.1 LEf(?)1.5 (Si4O8)0.8 (~92% en volume), localement transformĂ©s en muscovite et en argiles; ils sont trĂšs prĂšs du pĂŽle microcline ordonnĂ©, avec des lamelles exsolvĂ©es en veines d’albite ordonnĂ©e, Ab99.1 An0.1 Or0.4 Cn0.1 Srf0.1 (~8% en volume). Le prĂ©curseur homogĂšne de la perthite contenait ~13% d’albite Abss (base molaire). Toutes les faces des cristaux de perthite sont recouvertes d’une surcroissance uniforme gris pĂąle de microline ordonnĂ© non perthitique, Or92.8 Ab4.8 Rbf0.2 Srf0.1 LEf(?)1.8(Si4O8)0.3. Les espaces entre les cristaux de feldspath potassique et de quartz sont surtout remplis de quartz microcristallin secondaire, “calcĂ©doine”, opale et goethite. Des diffĂ©rences dans l’évolution subsolidus des deux cavitĂ©s hĂŽtes expliquent le contraste frappant en termes du degrĂ© d’ordre du feldspath potassique sur les parois. Dans la pegmatite de El Criollo, la cavitĂ© a probablement perdu la phase fluide rĂ©siduelle rapidement; l’orthose des cristaux primaires devenus perthitiques et de la surcroissance gemme ne contient que des domaines ordonnĂ©s cohĂ©rents et maclĂ©s, conservĂ©s de façon mĂ©tastable, et trĂšs peu d’altĂ©ration. Dans la pegmatite de San Luis II, les cristaux de feldspath potassique le long des parois montrent des signes importants d’altĂ©ration et de surcroissances de phases de basse tempĂ©rature, indications d’une activitĂ© hydrothermale substantielle, qui a favorisĂ© la mise en ordre (Al,Si) du feldpath pour mener Ă  la forme Ă  maclage quadrillĂ© du microcline ordonnĂ©, aussi bien dans les cristaux perthitiques que dans les surcroissances non perthitiques.Fil: Cerny, Petr. University of Manitoba; CanadĂĄFil: Galliski, Miguel Angel. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - Mendoza. Instituto Argentino de NivologĂ­a, GlaciologĂ­a y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de NivologĂ­a, GlaciologĂ­a y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de NivologĂ­a, GlaciologĂ­a y Ciencias Ambientales; Argentina. Ministerio de Relaciones Exteriores, Comercio Internacional y Culto. Direccion Nacional del AntĂĄrtico. Instituto AntĂĄrtico Argentino. Instituto AntĂĄrtico Argentino - Sede Cricyt (Mendoza); ArgentinaFil: Oyarzabal, Julio C.. Universidad Nacional de San Luis; ArgentinaFil: Teertstra, David K.. University of Manitoba; CanadĂĄFil: Chapman, Ron. University of Manitoba; CanadĂĄFil: MacBride, Lyndsey. University of Manitoba; CanadĂĄFil: Ferreira, Karen. University of Manitoba; Canad

    Performance Optimization of Storable Bipropellant Engines to Fully Exploit Advanced Material Technologies

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    This paper summarizes the work performed to dale on the NASA Cycle 3A Advanced Chemical Propulsion Technology Program. The primary goals of the program are to design, fabricate, and test high performance bipropellant engines using iridium/rhenium chamber technology to obtain 335 seconds specific impulse with nitrogen tetroxide/hydrazine propellants and 330 seconds specific impulse with nitrogen tetroxide/monomethylhydrazine propellants. Aerojet has successfully completed the Base Period of this program, wherein (1) mission and system studies have been performed to verify system performance benefits and to determine engine physical and operating parameters, (2) preliminary chamber and nozzle designs have been completed and a chamber supplier has been downselected, (3) high temperature, high pressure off-nominal hot fire testing of an existing state-of-the-art high performance bipropellant engine has been completed, and (4) thermal and performance data from the engine test have been correlated with new thermal models to enable design of the new engine injector and injector/chamber interface. In the next phase of the program, Aerojet will complete design, fabrication, and test of the nitrogen tetroxide/hydrazine engine to demonstrate 335 seconds specific impulse, and also investigate improved technologies for iridium/rhenium chamber fabrication. Achievement of the NRA goals will significantly benefit NASA interplanetary missions and other government and commercial opportunities by enabling reduced launch weight and/or increased payload. At the conclusion of the program, the objective is to have an engine ready for final design and qualification for a specific science mission or commercial application. The program also constitutes a stepping stone to future, development, such as higher pressure pump-fed in-space storable engines
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