A Bibliography of Periodical Literature Relating to the Law of Historic Preservation

  We evaluated the trade-off between foraging activity and predation risk for larvae of an anuran species presented with different types of food resources. In the laboratory we examined the effects of benthic and phytoplankton resources and the two types combined on the activity and mortality of larvae of the common frog, Rana temporaria, exposed to predatory larva, Dytiscus marginalis. Predation mortality of tadpoles increased with the duration of the experiment and was highest in the presence of the phytoplankton resource alone. This was explained by a decrease in prey activity in the benthic- and combined-resource treatments when the predator was present, whereas in the phytoplankton treatment, the activity of the tadpoles were similar in the presence or absence of the predator. In the presence of the predator, prey mainly used the bottom of the aquarium in the benthic- and combined-resource treatments. In contrast, in the phytoplankton treatment they used the water column more than in the other treatments. In the presence of the predator, the prey had a lower consumption rate in the phytoplankton treatment than in the other treatments. Predator activity did not change among treatments. The results suggest that the trade-off between foraging activity and predation mortality for anuran larvae is strongly affected by the types of food resources present in the environment.  

Sydneys humanister och Göteborgs medlare - En kvalitativ studie om enhetschefers uppfattning av konflikter i samband med lönesättning

Denna uppsats behandlar enhetschefers uppfattning av konflikter i samband med lönesättning. Studien har tre syften i form av att beskriva enhetschefers uppfattning, relatera uppfattningen till olika ledarstilar, om möjligt utveckla dessa ledarstilar samt att jämföra Göteborgs och Sydneys enhetschefers uppfattning av konflikter i samband med lönesättning. Specifika frågeställningar i form av hur enhetschefer för äldreboende uppfattar konflikter i samband med lönesättning samt vilka likheter och skillnader som finns gällande hur enhetschefer för äldreboende i Göteborg respektive Sydney uppfattar konflikter i samband med lönesättning har studerats på plats i både Göteborg och Sydney. Kvalitativa intervjuer har skett med fyra enhetschefer i respektive stad med en semistrukturerad intervjuguide som har kompletterats med litteraturstudier. Studiens teoretiska referensramar utgörs av en triangulering i form av Blake och Moutons ledarstilsteori och konfliktteori. Ledarstilsteorin upplevs av oss författare som normativ, därför presenterar uppsatsen en utveckling av teorin. Utvecklingen innebär bland annat förslag i form av en numerisk kategorisering av ledarstilar men även en kategorisering med svagt positivt laddade begrepp i form av beskyddaren, den målmedvetne, humanisten, medlaren och kombineraren. Uppsatsens resultat och analys presenteras under olika teman med rubrikerna ledarstilar, konfliktstilar, kommunikation som ett redskap vid konflikter samt hur enhetscheferna önskar hantera konflikter. Enhetschefernas uppfattning av konflikter har relaterats till Blake och Moutons ledarstilsteori och konfliktteori, men även till tidigare forskning. Ett av studiens resultat är att enhetschefernas uppfattning av konflikter i samband med lönesättning är övervägande negativ, men ibland även positiv då konflikter ses som en möjlighet till förbättring. Flertalet informanter önskar en verksamhet utan konflikter, men har strategier för hur konflikter kan hanteras. Enhetscheferna använder kommunikation som ett hjälpmedel vid konflikter på olika sätt och samtliga informanter har en önskan om att hantera konflikter på ett annorlunda sätt än vad de gör i dagsläget

The capability of Transmission Kikuchi Diffraction technique for characterizing nano-grained oxide scales formed on a FeCrAl stainless steel

This letter focuses on the capability of Transmission Kikuchi Diffraction (TKD) in Scanning Electron Microscope (SEM) for obtaining microstructural and micro-textural information from nano-grained oxide scales formed on a FeCrAl alloy. Orientation maps, with an indexing rate of 85%, showed the formation of grains in the range 20-300 nm. TKD revealed the existence of an orientation relationship at the alloy/oxide interface as well as the presence of a single grain (40 nm) with spinel structure in the alumina scale. A pre-tilted sample holder was designed for 110 investigations at short working distances with minimized mechanical drift of the thin foils. (C) 2015 The Authors. Published by Elsevier B.V

An improved sampling tube for in-duct fan sound measurement

A number of researchers have shown that the currently available commercial sampling tube (microphone turbulence screen) suffers from excessive self-noise, poor turbulence rejection and non-smooth frequency response. This paper describes the development of an improved sampling tube by Baade. In particular, it discusses the difficulties encountered by Halvarsson and Davy when measuring the pure tone frequency response of sampling tubes in an anechoic room. This research is still in progress, but results to date are presented. It is planned that the design resulting from this research will be included in ASHRAE Standard 68 and ISO 5136

A 20 kA Test Bench for High-Precision Current Measurements

The d.c. currents in the LHC dipole and quadrupole chains will require settings and adjustments with a precision of a few ppm. For an ultimate current level of 13 kA this represents an unprecedented accuracy. Compared to the requirements of previous accelerators at CERN, such as the LEP, this is a factor of ten better in accuracy at more than twice the current. State-of-the-art, zero-flux current transducers from Industry will be used for the precision measurements. As no existing laboratory would be capable of performing the calibrations of these transducers to the required precision, a major upgrading of the current Standards laboratory at CERN was decided. The paper describes the various phases of the project, from field calculations and design to construction and final commissioning of this unique test bench. The highly automated facility allows determination of off-sets, linearity and drift of transducers up to 20 kA but provides equally the means to study the sensitivity of the transducers to external stray fields as generated by currents in adjacent busbars

Noise Reduction on the LEP bunch current measurement system

The lifetimes of coasting beams in LEP are computed from the difference of the bunch currents measured during a time interval of a few seconds. The quality of these measurements is presently limited by the noise figure of the bunch to bunch aquisition system. This paper describes comparative studies on the aquisition system in order to improve the noise figure by one order of magnitude. For this purpose three different principles, i.e. integrating measurements, peak hold circuits with internal timing (autotrigger) or peak hold circuits with external timing were studied. This paper describes the results of these studies

Trends in Atomic Adsorption on Titanium Carbide and Nitride

Extensive density-functional calculations on atomic chemisorption of H, B, C, N, O, F, Al, Si, P, S, and Cl on the polar TiC(111) and TiN(111) yield similar adsorption trends for the two surfaces: (i) pyramid-like adsorption-energy trends along the adatom periods; (ii) strongest adsorption for O, C, N, S, and F; (iii) large adsorption variety; (iv) record-high adsorption energy for O (8.4-8.8 eV). However, a stronger adsorption on TiN is found for elements on the left of the periodic table and on TiC for elements on the right. The results support that a concerted-coupling model, proposed for chemisorption on TiC, applies also to TiN.Comment: 5 pages, 4 figures, 2 tables, conference proceeding presented at ECOSS-23 (Berlin, 2005), submitted to Surf. Sci. (2005

Navigating the PDF/A Standard: A Case Study of Theses in Oxford's Institutional Repository

The PDF/A (Portable Document Format–Archival) was established by the International Organization of Standardization as the ISO 19005 standard for long-term preservation of electronic documents. In a case study of the Oxford institutional repository theses collection, PDF/A was evaluated as a possible format for standardizing theses disseminated online. While the ISO requirements of a well-formed PDF/A promises sustainability and easy recovery of content, the case study uncovered that the standard restricts some document features from being incorporated into a well-formed PDF/A. Non-conformances to the standard are found across electronic theses and dissertations, from non-Latin glyphs used in scientific and language papers to embedded content, such as images. A further complication for achieving ISO 19005 compliance is that, despite non-conformance to the ISO standard, validation tools do not always catch non-conformance errors in documents which claim to conform to PDF/A. While PDF/A is a logical solution for long-term digital preservation, the stringent standard prevents some content which is frequently used in academic research from conforming to the ISO 19005 standard

Researching Lean: Methodological implications of loose definitions

Recently, Lean Production (Lean) has become a prevailing management concept in Sweden. However, previous research seems to show that the Lean concept and the impact of Lean vary considerably between organizations. This paper illustrates some key methodological issues that need to be considered when researching loosely defined management concepts such as Lean. The paper is based on a review of the literature and five comparative Swedish cases studies. Our study indicates that Lean has changed over time and that operationalization and interpretations of the concept vary considerably. This study concludes that future Lean studies should include a thorough assessment of the Lean interventions, study settings, and in particular non-Lean factors mediating the outcomes of Lean-inspired change programs

High-current performance evaluation of DCCTs

The evaluation of high performance DCCT's to the ppm level has never been an easy task. With the LHC demanding currents up to 13 kA, a whole series of problems has arisen in the accurate measurement of these devices. In order to tackle these problems, new facilities have been designed for laboratory measurements under full power operating conditions. These include a high performance low voltage 20 kA power converter, quasi-coaxial bus-bar structures, Kusters Bridge range extenders and a novel bipolar 0 - 10 A current calibrator with resolution and linearity better than ± 0.5 ppm. This paper will present an overview of the complete facility and give more detail on the new current calibrator. Initial results will be presented, along with application areas which advance the state of the art in this field of measurements