bluuebunny/crossref_metadata_2025_split huggingface dataset:
Untersuchungen zum Korrosionsschutz von Kanten an Stahlkonstruktionen – Problemstellung und Versuchsdurchführung (Teil 1)
Authors: Buchbach Sascha , Plagemann Peter , Momber Andreas W. 
Published: January 2011

AbstractIm Rahmen von Laborprüfungen wurde die Korrosionsschutzwirkung organischer Beschichtungssysteme an Kanten von Stahlkonstruktionen untersucht. Die Kanten waren mit verschiedenen mechanischen und thermischen Verfahren vor dem Beschichten gerundet worden. Es kamen drei verschiedene Beschichtungssysteme zum Einsatz, darunter ein sogenanntes kantenfreundliches System. Für die Beurteilung der Korrosionsschutzwirkung wurden drei Kennwerte herangezogen: Kantenüberdeckungsgrad, Ohmscher Widerstand der Beschichtung und Antikorrosiv‐ Effekt. Die Prüfungen umfassten Messungen der Trockenschichtdicken an Kanten und Flächen, Untersuchungen mittels elektrochemischer Impedanzspektroskopie (EIS) und beschleunigte Alterungsprüfungen in einer Wellentank‐Simulationskammer. Im vorliegenden Beitrag werden Konzeption und Durchführung der Prüfungen sowie die verwendeten Prüfkörper und Korrosionsschutzsysteme beschrieben. Über die Ergebnisse der Prüfungen wird in weiteren Beiträgen berichtet.Investigations into the corrosion protection on edges of steel constructions – Introduction and test scenario (Part 1). Based on laboratory tests, the corrosion protection capability of organic coating systems on edges of steel constructions was investigated. The edges were rounded with different mechanical and thermal tools. Three different coating systems were considered, whereby one of the systems was a so‐called edge retentive system. Three criteria were utilized in order to assess the corrosion protection capability: edge coverage degree, Ohmic resistance of the coating systems, and an anticorrosive effect. The tests included DFT measurements on edges and areas, electrochemical impedance spectroscopy (EIS) measurements and accelerated ageing tests in a wave tank simulation chamber. This paper covers the general experimental design and details of the experimental procedure, whereas following papers deal with the results of the test programme.
Das freie Spiel der Flächen und Stäbe
Authors: Schober Hans , Werwigk Michael , Kürschner Kai 
Published: January 2011

AbstractAuf dem Konzerngelände eines weltweit tätigen Pharmakonzerns in Basel wurde ein vom Architekten Frank O. Gehry entworfenes skulpturales Bürogebäude geplant und fertiggestellt. Besonderes Augenmerk ist die transparente Stahl‐Glas‐Hülle, die aus verschieden zusammengesetzten Fassadenflächen besteht. Um die freie Geometrie dieses Gebäudes möglichst nahe an der Entwurfsidee in die Realität umzusetzen, wurde für alle Planungsbeteiligten verbindlich das CAD‐Programm CATIA in den Planungsprozess integriert. Das Ingenieurbüro schlaich bergermann und partner hat die komplette Tragwerksplanung (Entwurf, Ausführung, Bauüberwachung) erstellt. Dieser Beitrag beschreibt die Besonderheiten bei Entwurf, Konstruktion sowie Herstellung und Montage der ungewöhnlichen Stahl‐Glas‐Hülle.The free operation of surfaces and steel bars. On the premises of a worldwide operating pharmaceutical company in Basle, Suisse a sculptural office building designed by Frank O. Gehry has been planned and completed. An outstanding charm is given by the transparent steel‐glass‐envelope covering the relatively shifted and rotated slabs as a free formed folded structure consisting of steel bars. To realize the free building geometry very close to the design idea for all project members the CAD‐software CATIA was integrated into the planning process. schlaich bergermann und partner has covered the full scope of structural engineering from schematic design to execution phase. This paper describes the specialties during design, engineering, fabrication and erection of the unusual envelope made of steel and glass.
Steuerbare Einwirkungen auf Kranbahnen
Authors: Thoß Reiner 
Published: January 2011

AbstractWährend beim Nachweis einer Kranbahn auf der Einwirkungsseite Spielräume vom Kran her bestehen, ist die Beanspruchbarkeit einer bestehenden Kranbahn ohne konstruktive Veränderungen festgeschrieben. Gerade wenn auf bestehende Kranbahnen neue Krane, oft mit erhöhter Tragfähigkeit, gesetzt werden sollen, müssen die Tragreserven nicht nur in der Kranbahn, sondern primär im Kran selbst bzw. seinen Parametern gesucht werden.Änderungen der Kranparameter und konstruktive Anpassungen der Krane, wie erhöhter Radstand, horizontale Führungsrollen, weichere Puffer usw. schaffen vorteilhaftere Einwirkungen auf die Kranbahn. Breiten Raum nimmt dabei die horizontale Kraftwirkung auf die Kranbahn ein, sind doch damit deutliche Einsparungen möglich, aber auch Gefährdungen werden aufgezeigt.Hinweise und Ausführungsbeispiele sowie Schäden und Einsatzerfahrungen, einschließend häufig auftretende Fehler in Konstruktion und Berechnung, schaffen eine neue Betrachtungsweise für die Auslegung von Kranbahnen für Brücken‐ und Portalkrane.Controlling the actions on crane gantries. When analysing the actions on a crane gantry, there is some leeway on the crane side, but the actions that may be applied to an existing crane gantry are fixed unless constructional changes are made. In particular, when new cranes, often with higher safe working loads, are to be mounted on existing crane gantries, the loadbearing reserves should not be sought solely in the gantry, but instead primarily in the crane itself, or rather its parameters.Changing the crane parameters and adapting the crane design, e.g. longer wheelbase, horizontal guide wheels, softer buffers, etc., are better for the crane gantry. The horizontal forces acting on the crane gantry constitute the principal effects, and significant savings are possible here. But the risks must also be addressed.Advice and case studies plus damage and practical experience, including the mistakes that frequently occur in design and calculations, add up to a new approach to the design of crane gantries for overhead travelling and portal gantry cranes.
A Targeted NKX2.1 Human Embryonic Stem Cell Reporter Line Enables Identification of Human Basal Forebrain Derivatives
Authors: Goulburn Adam L. , Alden Darym , Davis Richard P. , Micallef Suzanne J. , Ng Elizabeth S. , Yu Qing C. , Lim Sue Mei , Soh Chew-Li , Elliott David A. , Hatzistavrou Tanya , Bourke Justin , Watmuff Bradley , Lang Richard J. , Haynes John M. , Pouton Colin W. , Giudice Antonietta , Trounson Alan O. , Anderson Stewart A. , Stanley Edouard G. , Elefanty Andrew G. 
Published: January 2011

Abstract
We have used homologous recombination in human embryonic stem cells (hESCs) to insert sequences encoding green fluorescent protein (GFP) into the NKX2.1 locus, a gene required for normal development of the basal forebrain. Generation of NKX2.1-GFP+ cells was dependent on the concentration, timing, and duration of retinoic acid treatment during differentiation. NKX2.1-GFP+ progenitors expressed genes characteristic of the basal forebrain, including SHH, DLX1, LHX6, and OLIG2. Time course analysis revealed that NKX2.1-GFP+ cells could upregulate FOXG1 expression, implying the existence of a novel pathway for the generation of telencephalic neural derivatives. Further maturation of NKX2.1-GFP+ cells gave rise to γ-aminobutyric acid-, tyrosine hydroxylase-, and somatostatin-expressing neurons as well as to platelet-derived growth factor receptor α-positive oligodendrocyte precursors. These studies highlight the diversity of cell types that can be generated from human NKX2.1+ progenitors and demonstrate the utility of NKX2.1GFP/w hESCs for investigating human forebrain development and neuronal differentiation.
Dynamics of offshore floating wind turbines—analysis of three concepts
Authors: Jonkman J. M. , Matha D. 
Published: January 2011

AbstractThis work presents a comprehensive dynamic–response analysis of three offshore floating wind turbine concepts. Models were composed of one 5  MW turbine supported on land and three 5  MW turbines located offshore on a tension leg platform, a spar buoy and a barge. A loads and stability analysis adhering to the procedures of international design standards was performed for each model using the fully coupled time domain aero‐hydro‐servo‐elastic simulation tool FAST with AeroDyn and HydroDyn. The concepts are compared based on the calculated ultimate loads, fatigue loads and instabilities. The loads in the barge‐supported turbine are the highest found for the three floating concepts. The differences in the loads between the tension leg platform–supported turbine and spar buoy–supported turbine are not significant, except for the loads in the tower, which are greater in the spar system. Instabilities in all systems also must be resolved. The results of this analysis will help resolve the fundamental design trade‐offs between the floating‐system concepts. Copyright © 2011 John Wiley & Sons, Ltd.
Coping with high dimensionality in massive datasets
Authors: Kettenring Jon R. 
Published: January 2011

AbstractA massive dataset is characterized by its size and complexity. In its most basic form, such a dataset can be represented as a collection ofnobservations onpvariables. Aggravation or even impasse can result if either number is huge. The more difficult challenge is usually associated with the case of very high dimensionality or ‘bigp’. There is a fast growing literature on how to handle such challenges, but most of it is in a supervised learning context involving a specific objective function, as in regression or classification. Much less is known about effective strategies for more exploratory data analytic activities. The purpose of this article is to put into historical perspective much of the recent research on dimensionality reduction and variable selection in such problems. Examples of applications that have stimulated this research are discussed along with a sampling of the latest methodologies to illustrate the onslaught of creative ideas that have surfaced. From a practitioner's perspective, the most effective strategy may be to emphasize the role of interdisciplinary teamwork with decisions on how best to grapple with high dimensionality emerging from a mixture of statistical thinking and consideration of the circumstances of the application.WIREs Comp Stat2011 3 95–103 DOI: 10.1002/wics.141This article is categorized under:Statistical Learning and Exploratory Methods of the Data Sciences > Exploratory Data AnalysisData: Types and Structure > Massive DataStatistical and Graphical Methods of Data Analysis > Multivariate Analysis
Cancer of the Gastric Cardia is Rising in Incidence in an Asian Population and is Associated with Adverse Outcome
Authors: Deans Chris , Yeo Matthew S. W. , Soe Mu Yar , Shabbir Asim , Ti T. K. , So Jimmy B. Y. 
Published: January 2011

AbstractBackgroundTumors arising from the esophagogastric junction (OGJ) are increasing in incidence in the west, but data from Asian populations are conflicting. Singapore has a mixed‐Asian population with an international lifestyle. This study was designed to examine the changing trends in incidence of gastric cardia cancer (type III) within this population and to compare the clinicopathological characteristics and outcome of these tumors with gastric tumors.MethodsTrends in cancer incidence were obtained from the Singapore Cancer Registry. Clinicopathological data were prospectively collected from patients undergoing surgery for gastric cancer who presented to the National University Hospital between 2000 and 2005. Patients underwent surgery with or without (neo)adjuvant therapy. Survival duration was analyzed.ResultsThe incidence of cardia tumors has increased each decade since 1968 (1968–1982, 6.3%; 1983–1992, 7.6%; 1993–1997, 8.4%; 1998–2002, 9.1%; 2003–2007, 16.2%). Among the study population (n = 159) cardia tumors were associated with male sex (p < 0.01) and dysphagia (p < 0.01). Although R0 resection rates were similar, systemic recurrence rates were higher among patients with cardia cancer (p = 0.031) and survival was reduced compared with patients with non‐cardia gastric cancer (median survival 26 vs. 69 months; p < 0.001). Cardia location of the tumor and metastatic lymph node ratio were identified as independent adverse prognostic indicators on multivariate analysis.ConclusionsSimilar to western societies, the incidence of proximal gastric cancer is increasing in Singapore. Cardia tumors are associated with poorer outcomes, suggesting that cardia cancer is a distinct disease from true gastric cancer requiring different management strategies to improve the outcome for these patients.
Mobilizing Communities for Implementing Evidence‐Based Youth Violence Prevention Programming: A Commentary
Authors: Fixsen Dean L. , Blase Karen A. , Van Dyke Melissa K. 
Published: January 2011

AbstractEvidence‐based programs have struggled for acceptance in human service settings. Information gleaned from these experiences indicates that implementation is the missing link in the science to service chain. The science and practice of implementation is progressing and can inform approaches to full and effective uses of youth violence prevention programs nationally. Implementation Teams that know (a) innovations, (b) implementation best practices, and (c) improvement cycles are essential to mobilizing support for successful uses of evidence‐based programs on a socially significant scale. The next wave of development in implementation science and practice is underway: establishing infrastructures for implementation to make implementation expertise available to communities nationally. Good science, implemented well in practice, can benefit all human services, including youth violence prevention.
Community Readiness for Change and Youth Violence Prevention: a Tale of Two Cities
Authors: Parker Robert Nash , Alcaraz Roxanna , Payne Pedro R. 
Published: January 2011

AbstractThis case study identifies a situation in which there exists a set of preconditions for the successful application of evidence based practice to bear on the community based problem of youth violence. The concept of readiness to change and its impact on the success or failure of interventions designed to change harmful or dangerous behavior among individuals is well established and understood in intervention research. In recent years this concept has been discussed and developed in the community intervention and harm reduction literatures. The current study is one of a community where an attempt was made to identify community levels of harm, develop a strategic plan to reduce the source of harm, and develop, implement, and evaluate youth violence prevention interventions. Over more than 5 years of involvement by university based researchers and community partners, the effort was largely unsuccessful. The events of this project are discussed within the context of the Community Readiness Model Edwards et al. (J Community Psychol 28(3): 291–307, 2000) and we present a narrative that helps to highlight the reasons for the relative lack of success of the effort. We suggest additional strategies and actions that might have helped to overcome the lack of readiness of this particular community to reduce the harms associated with youth violence. Suggestions that may improve chances for a more successful set of outcomes for other communities in similar states of readiness to change and with similar challenges are given.
Imaging the spine in arthritis—a pictorial review
Authors: Jurik Anne Grethe 
Published: January 2011

AbstractSpinal involvement is frequent in rheumatoid arthritis (RA) and seronegative spondyloarthritides (SpA), and its diagnosis is important. Thus, MRI and CT are increasingly used, although radiography is the recommended initial examination. The purpose of this review is to present the typical radiographic features of spinal changes in RA and SpA in addition to the advantages of MRI and CT, respectively. RA changes are usually located in the cervical spine and can result in serious joint instability. Subluxation is diagnosed by radiography, but supplementary MRI and/or CT is always indicated to visualise the spinal cord and canal in patients with vertical subluxation, neck pain and/or neurological symptoms. SpA may involve all parts of the spine. Ankylosing spondylitis is the most frequent form of SpA and has rather characteristic radiographic features. In early stages it is characterised by vertebral squaring and condensation of vertebral corners, in later stages by slim ossifications between vertebral bodies, vertebral fusion, arthritis/ankylosis of apophyseal joints and ligamentous ossification causing spinal stiffness. The imaging features of the other forms of SpA can vary, but voluminous paravertebral ossifications often occur in psoriatic SpA. MRI can detect signs of active inflammation as well as chronic structural changes; CT is valuable for detecting fracture.
Uterine Adenocarcinoma with Abdominal Metastases in an Ovariohysterectomised Cat
Authors: Anderson Claire , Pratschke Kathryn 
Published: January 2011

Surgical findings An adenocarcinoma of the uterine stump with abdominal metastases is described in a 12.5-year-old incompletely ovariohysterectomised domestic shorthair cat. At the time of presentation, the adenocarcinoma had metastasised to the right perirenal lymph node, the abdominal aorta and the right ureter, resulting in the formation of a large cystic structure. This had compressed and displaced surrounding structures, including the abdominal vena cava and the right kidney, and formed multiple adhesions to the body wall and adjacent abdominal structures. Metastatic extension to the aorta had resulted in its regression into a 2 mm diameter non-pulsatile vessel. Practical relevance Only one case of uterine adenocarcinoma has previously been reported in an ovariohysterectomised cat. As such, this represents a very unusual and severe complication following an incomplete ovariohysterectomy. Invasion of the tumour tissue into surrounding structures created further complications.
Cadaveric Study of Locked Thumb Metacarpophalangeal Joint Caused by Entrapment of Radial Sesamoid Bone
Authors: Sze-Chung Cheng , Chi-Hung Yen , Wing-Cheung Wong , Pak-Cheong Ho , Wing-Lim Tse , Leung-Kim Hung 
Published: January 2011

Purpose To identify the anatomical basis of entrapment of radial sesamoid bone of thumb into intercondylar notch of first metacarpal head and to reproduce radiographic “overlapping sign” on sesamoid subluxation. Methods Ten human cadaveric hands were dissected to measure the anthropometric parameters of radial sesamoid bone and intercondylar notch of first metacarpal head. Radiographs were taken to identify and to reproduce “overlapping sign” on sesamoid subluxation into intercondylar notch. Results Intercondylar notch of first metacarpal head was consistently larger than radial sesamoid bone, which allowed the entrapment. Radiographic “overlapping sign” was reproducible when such subluxation occurred. Conclusion This anatomical study identifies sesamoid subluxation into intercondylar notch as the cause of first metacarpophalangeal joint rotary subluxation. Radiographic “overlapping sign” is diagnostic of this clinical entity and is an important consideration for open reduction.
Canadian Political Science and the City: A Limited Engagement
Authors: Taylor Zack , Eidelman Gabriel 
Published: January 2011

Abstract.This paper expands on the work of Higgins, whose 1979 review remains the only synthetic overview of the field, by presenting an updated analysis of the study of municipal, local and urban issues in Canadian political science. We conclude that despite several discursive shifts—from the descriptive works of the 1950s and 1960s, through to the blossoming of interdisciplinary research in the 1980s and 1990s—Higgins' principal conclusion, that the various streams of urban politics continue to be studied in relative isolation from each other, still rings true. Despite the recent broadening of the literature, productive scholarly debates within and across research clusters are rare, and where debates do emerge, they are more often driven by current events and normative claims than by theoretical innovations. To remedy these deficiencies, we propose several bases for a new urban research agenda that is more methodologically and theoretically diverse and connected to work in other disciplines.Résumé.Dans la foulée des travaux de Higgins, cet article présente une mise à jour sur les enjeux municipaux, locaux et urbains en science politique canadienne. Higgins publia en 1979 la seule synthèse des travaux dans ce domaine disponible à ce jour. Il y concluait que les diverses problématiques associées aux politiques urbaines étaient étudiées de manière isolée les unes par rapport aux autres. Cette conclusion nous apparaît encore juste, malgré les nombreux changements de discours qu'a connus ce domaine d'études. En effet, les travaux descriptifs des années 1950 et 1960 ont fait place, dans les décennies 1980 et 1990, à un foisonnement de recherches interdisciplinaires. Or, malgré ce récent élargissement de la littérature, les débats productifs dans et entre les différents champs de recherche sont rares. De plus, lorsque des débats émergent, ils sont plus souvent motivés par les événements de l'actualité et les opinions émises que par l'innovation théorique. Pour combler ces lacunes, nous proposons plusieurs avenues ouvrant sur un nouvel agenda de recherche en politiques urbaines à la fois plus diversifié sur le plan méthodologique et théorique et davantage connecté aux travaux réalisés à l'extérieur de la science politique.
Exploring Complex Judicial–Executive Interaction: Federal Government Concessions in Charter of Rights Cases
Authors: Hennigar Matthew A. 
Published: January 2011

Abstract.This article analyzes the federal government's concessions before the Supreme Court of Canada that its own laws are unconstitutional under the Charter of Rights, marking the first time that concessions have been analyzed empirically in Canada. Using data from 1984–2004, the author finds that full concessions of unconstitutionality are exceptionally rare but that partial concessions are not uncommon. There is weak support for the hypothesis that governments are more willing to concede laws passed by previous governments of a different party, but, on the whole, the federal government appears committed to defending its laws in court. The author explores the implications of this for the relationship between the judiciary and the executive, including judicial activism, Charter dialogue and government use of the courts to advance policy goals.Résumé.Cet article analyse les concessions du gouvernement fédéral devant la Cour suprême du Canada que ses propres lois violent laCharte canadienne des droits et libertés. Il s'agit, en fait, de la première analyse empirique de ces concessions au Canada. S'appuyant sur des données des années 1984 à 2004, l'auteur constate que les concessions complètes d'inconstitutionnalité sont exceptionnellement rares, mais que les concessions partielles ne sont pas inhabituelles. On donne peu d'appui à l'hypothèse que les gouvernements sont plus disposés à concéder les lois passées par des gouvernements précédents représentant un autre parti, et, dans l'ensemble, le gouvernement fédéral semble être engagé à défendre ses lois devant les cours. L'auteur explore l'incidence de cette situation sur les relations entre le pouvoir judiciaire et le pouvoir exécutif, abordant, entre autres, la question de l'activisme judiciaire, du dialogue sur la Charte et de l'utilisation des tribunaux par le gouvernement pour promouvoir certaines politiques.