951 research outputs found
Commercial Fishing Port Development in North Florida
The author has identified the following significant results. Seven major counties were examined: Escambia, Bay, Gulf, Franklin, Wakulla, Nassau, and Duval. Population and economic activity were reviewed, along with commercial fishing and port facilities. Recommendations for five northwest Florida counties were based on interpretation of aerial photographs, satellite imagery, an aerial survey site visit, and published data. Major needs in Pensacola included docking, ice supply, and net and engine repair services. Costs for additional docks, an ice plant, and gear storage were estimated at 2,860,000. Added docking, gear storage, and ice supply, as well as gear electronics and diesel repair were needed in Port St. Joe. Costs were calculated at 1,107,000 for docks and gear storage, Eastpoint - 2,824,100 for docks, gear storage, and ice plant)
In-Plane Conductivity Anisotropy in Underdoped Cuprates in the Spin-Charge Gauge Approach
Applying the recently developed spin-charge gauge theory for the pseudogap
phase in cuprates, we propose a self-consistent explanation of several peculiar
features of the far-infrared in-plane AC conductivity, including a broad peak
as a function of frequency and significant anisotropy at low temperatures,
along with a similar temperature-dependent in-plane anisotropy of DC
conductivity in lightly doped cuprates. The anisotropy of the metal-insulator
crossover scale is considered to be responsible for these phenomena. The
obtained results are in good agreement with experiments. An explicit proposal
is made to further check the theory.Comment: 5 pages, 3 figures, to appear in Phys. Rev.
Information theory analysis of Australian humpback whale song
Songs produced by migrating whales were recorded off the coast of Queensland, Australia, over six consecutive weeks in 2003. Forty-eight independent song sessions were analyzed using information theory techniques. The average length of the songs estimated by correlation analysis was approximately 100 units, with song sessions lasting from 300 to over 3100 units. Song entropy, a measure of structural constraints, was estimated using three different methodologies: (1) the independently identically distributed model, (2) a first-order Markov model, and (3) the nonparametric sliding window match length (SWML) method, as described by Suzuki et al. [(2006). “Information entropy of humpback whale song,” J. Acoust. Soc. Am. 119, 1849–1866]. The analysis finds that the song sequences of migrating Australian whales are consistent with the hierarchical structure proposed by Payne and McVay [(1971). “Songs of humpback whales,” Science 173, 587–597], and recently supported mathematically by Suzuki et al. (2006) for singers on the Hawaiian breeding grounds. Both the SWML entropy estimates and the song lengths for the Australian singers in 2003 were lower than that reported by Suzuki et al. (2006) for Hawaiian whales in 1976–1978; however, song redundancy did not differ between these two populations separated spatially and temporally. The average total information in the sequence of units in Australian song was approximately 35 bits/song. Aberrant songs (8%) yielded entropies similar to the typical songs
Insights Developed Into the Damage Mechanism of Teflon FEP Thermal Control Material on the Hubble Space Telescope
Metalized Teflon FEP (DuPont; fluorinated ethylene propylene) thermal control material on the Hubble Space Telescope (HST) has been found to degrade in the space environment. Teflon FEP thermal control blankets retrieved during the first servicing mission were found to be embrittled on solar-facing surfaces and to contain microscopic cracks (the FEP surface is exposed to the space environment). During the second servicing mission, astronauts noticed that the FEP outer layer of the multilayer insulation blanketing covering the telescope was cracked in many locations. Large cracks were observed on the light shield, forward shell, and equipment bays. A tightly curled piece of cracked FEP from the light shield was retrieved during the second mission. This piece was severely embrittled, as witnessed by ground testing. A Failure Review Board was organized by NASA Goddard Space Flight Center to determine the mechanism causing the multilayer insulation degradation. This board included members of the Electro-Physics Branch of the NASA Glenn Research Center at Lewis Field. Density measurements of the retrieved materials obtained under the review board's investigations indicated that FEP from the first servicing mission was essentially unchanged from pristine FEP but that the second servicing mission FEP had increased in density in comparison to pristine FEP (ref. 1). The results were consistent with crystallinity measurements taken using x-ray diffraction and with results from solid-state nuclear magnetic resonance tests (see the table and ref. 1). Because the second servicing mission FEP was embrittled and its density and crystallinity had increased in comparison to pristine FEP, board researchers expected that the first servicing mission FEP, which was also embrittled, would also have increased in crystallinity and density, but it did not. Because the retrieved second servicing mission material curled while in space, it experienced a higher temperature extreme during thermal cycling (estimated at 200 C) than the first servicing mission material (estimated at 50 C). Therefore, Glenn initiated and conducted an investigation of the effects of heating pristine FEP and FEP that had been exposed on the Hubble Space Telescope. Samples of pristine and first and second servicing mission FEP were heated to 200 C and evaluated for changes in density and morphology. We hoped that the results would help explain why FEP degrades in the Hubble Space Telescope space environment
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Managing ‘academic value’: the 360-degree perspective
The raison d'etre of all universities is to create and deliver ‘academic value’, which we define as the sum total of the contributions from the 360-degree ‘angles’ of the academic community, including all categories of staff, as well as external stakeholders (e.g. regulatory, commercial, professional and community interests). As a way to conceptualise these complex relationships, we present the ‘academic wheel’ to illustrate the structural nature of them. We then discuss the implications of the different – and sometimes difficult – perspectives of academic, professional and administrative groups in the context of a number of important social psychological processes. We ask whether it is possible to reconcile, what is sometimes perceived as, managerial Taylorism with the academic freedom of (Laurie) Taylorism. We conclude that recognition and active management of these processes are required for each university to optimise its own brand of core academic value
(Dis)connected communities and sustainable place-making
Why, despite a recent surge in the UK in “sustainable communities” policy discourse, do so many community-led sustainability initiatives remain fragmented, marginal and disconnected from local government strategies? How can community- and government-led sustainability initiatives be better integrated such that they add significantly to a denser matrix and cluster of sustainable places? These questions, we argue, lie at the heart of current sustainable place-making debates. With particular reference to two spatial scales of analysis and action, the small town of Stroud, England and the city of Cardiff, Wales, we explore the twin processes of disconnection and connection between community sustainability activists and local state actors. We conclude that whilst there will always remain a need for community groups to protect the freedom which comes from acting independently, for community activists and policy-makers alike, there are nevertheless a series of mutual benefits to be had from co-production. However, in setting out these benefits we also emphasise the dual need for local government to play a much more nuanced, integrative and facilitatory role, in addition to, but separate from, its more traditional regulatory role
Exploring the use of technology designed to support the supervision process in teacher training placements
The practicum supervision process in teacher education comprises various cyclic experiential learning activities (e.g. planning, observation and supervision conversation). Research has documented considerable challenges relating to this process, but also that digital technology can help.
In the study, a software program designed for practicum supervision (MOSO) is tested in three Scandinavian teacher education programmes in which groups of student teachers are supervised by a mentor teacher. Throughout this process, the participants continuously alternate between individual reflection, and analogue/digital collaborative reflection. The aim of the study is to contribute knowledge about the experiences of using this technology, and data was collected through qualitative survey and focus groups.
The software contributed to improving the quality of the practicum supervision process, for example by: safeguarding supervision on lesson planning; improving observations, feedback and recollection; and facilitating more reflective and collaborative student teachers. The study also identifies important challenges when using such technology
Environment change, economy change and reducing conflict at source
At a time when fossil fuel burning, nationalism, ethnic and religious intolerance, and other retrograde steps are being promoted, the prospects for world peace and environmental systems stability may appear dim. Yet now is it the more important to continue to examine the sources of conflict. A major obstacle to general progress is the currently dominant economic practice and theory, which is here called the economy-as-usual, or economics-as-usual, as appropriate. A special obstacle to constructive change is the language in which economic matters are usually discussed. This language is narrow, conservative, technical and often obscure. The rapid changes in the environment (physical and living) are largely kept in a separate compartment. If, however, the partition is removed, economics -as-usual, with its dependence on growth and its widening inequality, is seen to be unsustainable. Radical economic change, for better or worse, is to be expected. Such change is here called economy change. The change could be for the better if it involved an expansion of the concept of economics itself, along the lines of oikonomia, a modern revival of a classical Greek term for management or household. In such an expanded view, not everything of economic value can be measured. It is argued that economics-as-usual is the source of much strife. Some features are indicated of a less conflictual economy - more just, cooperative and peaceful. These features include a dignified life available to all people as of right, the word 'wealth' being reconnected with weal, well and well-being, and 'work' being understood as including all useful activity
Fragmentarisk partnerskap i lærerstudenters FoU-veiledning: En studie av studenter og lærerutdanneres erfaringer
Samhandlingen mellom campus- og skoledelen av lærerutdanningen har tradisjonelt vært svak. Derfor hevdes det internasjonalt at utvikling av partnerskap mellom universiteter og skoler er avgjørende for å styrke lærerutdanningens kvalitet, og i senere tiår er det lansert mange intervensjoner for å utvikle partnerskap. En av disse er den nylig innførte «FoU-oppgaven» i norsk lærerutdanning, der studentene veiledes av lærerutdannere fra begge kontekster. Det er behov for kunnskap om hvordan samhandlingen mellom partene i denne veiledningen fungerer, og denne undersøkelsens formål er å bidra med dette.Gjennom studien i en grunnskolelærerutdanning undersøkes det hvordan lærerstudenter, praksislærere og universitetslærere erfarer samhandlingen med hverandre i FoU-veiledningen. Fokusgrupper ble gjennomført med hver av partene, og dette gav materiale til en tematisk analyse. Studien viser at partene erfarer fragmenterte partnerskap med variert, distansert, begrenset, fraværende, tilfeldig og kunstig samhandling. Studien gir spesifikk kunnskap om utfordringene ved triadisk FoU-veiledning som involverer parter fra begge lærerutdanningskontekstene. Mer generelt viser studien behovet for å klargjøre felles forståelse i samarbeidstiltak, og å belyse forholdet mellom ambisiøse partnerskapsintensjoner og begrensede ressurser i lærerutdanning
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