935 resultados para condition of hydrolysis


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Mode of access: Internet.

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Mode of access: Internet.

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A scaling law is presented that provides a complete solution to the equations bounding the stability and rupture of thin films. The scaling law depends on the fundamental physicochemical properties of the film and interface to calculate bounds for the critical thickness and other key film thicknesses, the relevant waveforms associated with instability and rupture, and film lifetimes. Critical thicknesses calculated from the scaling law are shown to bound the values reported in the literature for numerous emulsion and foam films. The majority of critical thickness values are between 15 to 40% lower than the upper bound critical thickness provided by the scaling law.

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Government agencies responsible for riparian environments are assessing the combined utility of field survey and remote sensing for mapping and monitoring indicators of riparian zone condition. The objective of this work was to compare the Tropical Rapid Appraisal of Riparian Condition (TRARC) method to a satellite image based approach. TRARC was developed for rapid assessment of the environmental condition of savanna riparian zones. The comparison assessed mapping accuracy, representativeness of TRARC assessment, cost-effectiveness, and suitability for multi-temporal analysis. Two multi-spectral QuickBird images captured in 2004 and 2005 and coincident field data covering sections of the Daly River in the Northern Territory, Australia were used in this work. Both field and image data were processed to map riparian health indicators (RHIs) including percentage canopy cover, organic litter, canopy continuity, stream bank stability, and extent of tree clearing. Spectral vegetation indices, image segmentation and supervised classification were used to produce RHI maps. QuickBird image data were used to examine if the spatial distribution of TRARC transects provided a representative sample of ground based RHI measurements. Results showed that TRARC transects were required to cover at least 3% of the study area to obtain a representative sample. The mapping accuracy and costs of the image based approach were compared to those of the ground based TRARC approach. Results proved that TRARC was more cost-effective at smaller scales (1-100km), while image based assessment becomes more feasible at regional scales (100-1000km). Finally, the ability to use both the image and field based approaches for multi-temporal analysis of RHIs was assessed. Change detection analysis demonstrated that image data can provide detailed information on gradual change, while the TRARC method was only able to identify more gross scale changes. In conclusion, results from both methods were considered to complement each other if used at appropriate spatial scales.

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Kutatásukban a szerzők a sikeres innovációs-növekedési stratégiák beazonosítására törekedtek két dimenzió mentén: növekedési erőfeszítés és innovációs erőfeszítés. A sikert mint a radikális innováció piaci bevezetéseként definiálták. A szakirodalom áttekintése és kvalitatív kutatási eredményeink alapján azt találták, hogy a siker feltételei a következők: (1) „felkészültség”, azaz biztos szakmai tudás (know-what); a (2) „gyakorlás”, azaz a folyamatok tökéletes ismerete (know-how); a (3) „tehetséggondozás”, azaz a megfelelő kapcsolati tőke a hiányzó képességek, erőforrások és információk megszerzéséhez (know-who); és végül a (4) „tehetség”, azaz kreativitás, magas asszociációs készség, és innovatív ötletek. A vezető feladata annak felismerése, hogy mikor szükséges lassítania a szervezetre nehezedő növekedési nyomáson. A nyugalmi időszakban továbbra is fontos az innovációs képességek fejlesztése. Következetesen fel kell ismernie, hogy mikor lesz nagyobb a szétaprózott erőforrások és a megosztott figyelem költsége, mint a potenciális hozadéka. _______ In present research the successful innovation-growth strategies are identified along two dimensions: growth effort and innovation effort. The success is defined as the introduction to the market of a radical innovation. After reviewing the literature and conducting a qualitative research, authors found that the threshold condition of success are the followings: (1) “preparation”, that is expertise (know-what); (2) “practice”, that is deep understanding of processes (know-how); (3) “talent support”, that is access to missing resources; and finally (4) “talent”, that is creativity, innovative idea, and high association capability. This is the role of the manager to decide when the organizational growth should be slowed down. While the development of innovation capability is still important in times of slow growth periods, the manager must recognize that the cost of divided attention and fragmented resources is higher, than the potential return of the innovation.

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Annual Condition of Education Report provides a rich tapestry of information about Iowa's Education system. The data presented in the report examines longitudinal trends about our students, our teacher and our schools from many perspectives. Information such as demographic characteristics, assessment results, college readiness, college readiness measures, courses taken, and financial health are just a few examples.