bluuebunny/crossref_metadata_2025_split huggingface dataset:
Smoothness‐constrained time‐lapse inversion of data from 3D resistivity surveys
Authors: Loke M.H. , Dahlin T. , Rucker D. F. 
Published: October 2013

ABSTRACTThree‐dimensional resistivity surveys and their associated inversion models are required to accurately resolve structures exhibiting very complex geology. In the same light, 3D resistivity surveys collected at multiple times are required to resolve temporally varying conditions. In this work we present 3D data sets, both synthetic and real, collected at different times. The large spatio‐temporal data sets are then inverted simultaneously using a least‐squares methodology that incorporates roughness filters in both the space and time domains. The spatial roughness filter constrains the model resistivity to vary smoothly in the x‐, y‐ and z‐directions. A temporal roughness filter is also applied that minimizes changes in the resistivity between successive temporal inversion models and the L‐curve method is used to determine the optimum weights for both spatial and temporal roughness filters. We show that the use of the temporal roughness filter can accurately resolve changes in the resistivity even in the presence of noise. The L1‐ and L2‐norm constraints for the temporal roughness filter are first examined using a synthetic model. The synthetic data test shows that the L1‐norm temporal constraint produces significantly more accurate results when the resistivity changes abruptly with time. The model obtained with the L1‐norm temporal constraint is also less sensitive to random noise compared with independent inversions (i.e., without any temporal constraint) and the L2‐norm temporal constraint. Anomalies that are common in models using independent inversions and the L2‐norm and L1‐norm temporal constraints are likely to be real. In contrast, anomalies present in a model using independent inversions but that are significantly reduced with the L2‐norm and L1‐norm constraints are likely artefacts. For field data sets, the method successfully recovered temporal changes in the subsurface resistivity from a landfill monitoring survey due to rainwater infiltration, as well as from an experiment to map the migration of sodium cyanide solution from an injection well using surface and borehole electrodes in an area with significant topography.
Comparison and optimal parameter settings of reference‐based harmonic noise cancellation in time and frequency domains for surface‐NMR
Authors: Müller‐Petke Mike , Costabel Stephan 
Published: October 2013

ABSTRACTThe technique of surface nuclear magnetic resonance (surface‐NMR) provides information on porosity and hydraulic conductivity that is highly valuable in a hydrogeological context. However, the applicability of surface‐NMR is often limited due to a bad signal‐to‐noise ratio. In this paper we provide a detailed insight into the technique of harmonic noise cancellation based on remote references to improve the signal‐to‐noise ratio. We give numerous synthetic examples to study the influence of various parameters such as optimal filter length for time‐ domain approaches or the necessary record length for frequency‐domain approaches, all of which evaluated for different types of noise conditions. We show that the frequency‐domain approach is superior to time‐domain approaches. We demonstrate that the parameter settings in the frequency domain and the decision whether or not to use separated noise measurement depend on the actual noise properties, i.e., frequency content or stability with time. We underline our results using two field examples.
Assessment of ground compaction using multi‐channel analysis of surface wave data and cone penetration tests
Authors: Bitri A. , Samyn K. , Brûlé S. , Javelaud E.H. 
Published: October 2013

ABSTRACTThe construction of a new industrial and commercial area in 2009 at the Givors’ former glass factory area in France involved heavy dynamic compaction work. For the purpose of founding the new buildings, it was necessary to improve the ground mechanical properties of 7–15 m of well‐graded gravel backfill lying on geotechnical bedrock. In order to assess the quality and depth of ground compaction, cone penetration tests are often performed before and after compaction. The method is intrusive and a one‐location test. It requires a substantial amount of time to evaluate a large area and evaluation quality is quite dependent on the operation technique and soil type. In this paper, the quality and extent of ground compaction were evaluated using results from the in situ Multi‐Channel Analysis of Surface Waves (MASW) seismic method and cone penetration tests (CPT). MASW tests were used to determine shear‐wave velocity () profiles before and after compaction and CPT tests were adopted to determine the correlation between and the measured penetration resistance () improvement along profiles. The results of this study show the effectiveness of surface waves for the evaluation of compaction performance and demonstrate the potential of this technique to engineering and environmental problems.
Detection and imaging of piping sinkholes by integrated geophysical methods
Authors: Cardarelli Ettore , Cercato Michele , De Donno Giorgio , Di Filippo Gerardina 
Published: October 2013

ABSTRACTPiping sinkholes may naturally develop in the case of a thick overburden overlying calcareous bedrock. Their detection and imaging is a challenging task for geophysical methods, not only because of the required resolution and depth of penetration, but also because major pitfalls may arise, in such geologically complex areas, from the speculative interpretation of geophysical anomalies as geological features. Data integration from different geophysical methods is essential to remove these interpretation ambiguities, caused by large near‐surface gradients and heterogeneities in the soil properties, as well as by oscillations of the water table and anomalous water circulation.We present an investigation procedure consisting of the sequential application and integrated interpretation of Electrical Resistivity Tomography (ERT), Seismic Refraction Tomography (SRT) and Self Potential (SP) measurements for locating and monitoring piping sinkholes with application to a site in Central Italy. This approach is a compromise between resolution and cost‐effectiveness, and it is designed to be economically affordable by the private end user.In complex geological scenarios, it is usually not possible to rate a single geophysical technique as superior to all the others in terms of resolution, cost‐effectiveness and diagnostic capability. The independent information coming from the different geophysical methods is the key to removing interpretation ambiguity when evaluating the position and the development over time of the piping sinkholes. The application of the proposed investigation procedure allowed us to individuate a small area subject to the formation of a piping sinkhole. The geophysical results were confirmed about one year after the execution of the geophysical measurements, as the site exhibited surface evidence of a piping sinkhole, with the formation of a small pond filled with sulphurous water and gases coming from below.
p33 (gC1q Receptor) Prevents Cell Damage by Blocking the Cytolytic Activity of Antimicrobial Peptides
Authors: Westman Johannes , Hansen Finja C. , Olin Anders I. , Mörgelin Matthias , Schmidtchen Artur , Herwald Heiko 
Published: October 2013

Abstract
The innate immune system is the first line of defense against invading microbes. Its specificity relies a great deal on host pattern recognition molecules that sense pathogen-associated molecular patterns of the invading pathogen. However, full protection is not always guaranteed, and some early defense mechanisms involved in bacterial killing, such as the complement system, can also exert cytolytic activity against host cells. Although these cascades are tightly regulated, the host has to take additional precautions to prevent its cell destruction. In this study, we describe that p33, a negatively charged surface protein found on endothelial cells also known as gC1q receptor, protects host cells from a cytolytic attack by antimicrobial peptides (AMPs), such as LL37 and β-defensin 3. To this end, we characterized the interaction of p33 with AMPs by biochemical and functional means. Our data show that p33 forms a doughnut-shaped trimer that can bind up to three AMPs, and we identified a segment in p33 forming a β-sheet that mediates the binding to all AMPs. Moreover, our results show that p33 abolishes the lytic activity of AMPs at an equimolar ratio, and it protects endothelial cells and erythrocytes from AMP-induced lysis. Taken together, our data suggest a novel protective mechanism of p33 in modulating innate immune response by neutralizing cytotoxic AMPs at the host cell surface.
La institucionalización de dos prácticas de la psicología en Chile: la psicología Comunitaria y la psicología de los Derechos Humanos
Authors: Piper Isabel 
Published: October 2013

Este texto reconstruye algunos aspectos de la memoria de dos espacios críticos del ejercicio de la psicología en Chile: la Psicología Social Comunitaria y la Psicología de los Derechos Humanos. Se reflexiona sobre el carácter "crítico" de dichas prácticas, a partir de un análisis de las condiciones sociales en las que fueron efectivamente alternativas a la psicología dominante y prácticas de resistencia política a las condiciones de la época.
Configuración ideológica y estructura social: resucitando el tema desde la psicología política
Authors: Carvacho Héctor , Haye Andrés 
Published: October 2013

A partir de los resultados de una investigación longitudinal sobre la cultura política de tres generaciones de chilenos (n1=494; n2=695; n3=494) se discute la relación entre variables estructurales de la sociedad (generación y clase social) y actitudes relevantes para el posicionamiento ideológico (apoyo a la democracia y autoritarismo). Los resultados indican que entre los jóvenes de derecha el apoyo a la democracia es más alto que entre los adultos de derecha, y que la relación entre autoritarismo y nivel educacional depende de la clase social. Estos resultados sugieren que el estudio actual de la ideología debe volver a tomar en cuenta, además de las variables individuales habitualmente utilizadas en psicología social, la clásica relación entre la estructura social y la formación de las actitudes ideológicas.
Implicancias de las técnicas de medición de la actividad cerebral en la cognición: ¿El tiempo o el espacio?
Authors: Díaz Pedro 
Published: October 2013

Se propone una discusión respecto a las interpretaciones teóricas que se hacen en las ciencias cognitivas, a partir de los hallazgos permitidos por las nuevas tecnologías para medir y observar la actividad cerebral. Se exponen los promisorios avances permitidos por las últimas técnicas de neuroimagen o "Técnicas de Espacio" como el TEP, el fMRI y otros, para delimitar los circuitos y las zonas donde se concentran variadas actividades cognitivas altas. Se contrapone esto con las características de las "Técnicas de Tiempo", como el electroencefalograma (EEG) o el magneto encefalograma (MEG), y algunos avances empíricos que estas han permitido, alimentando teorías predominantemente asociadas a los sistemas dinámicos. Finalmente, se comentan las implicancias de ambos tipos de técnicas en las teorías de la cognición, llamando la atención sobre la necesidad de analizar qué estamos viendo con cada técnica, y cómo lo que estamos viendo afecta nuestras concepciones teóricas.
Revisiter le « Nihilisme »
Authors: Roy Louis 
Published: October 2013

Au cours de cet essai, nous présentons la pensée de Nishitani, à la fois praticien du zen et philosophe. Nous expliquons les thèmes sur lesquels il se concentra dans son dialogue avec Eckhart, Nietzsche et Heidegger : le grand doute (taigi), la grande mort (taishi), la religion (shūkyō) , la concentration (samādhi, sammai), l’ego (jiga), le vrai soi (jiko), l’ipséité (jitai, identité profonde), la talité (tathatā,nyojitsu), le rien (mu), la nihilité (kyomu, littéralement : le « rien creux »), la vacuité (kūéquivalent japonais du fameuxśūnyatālittéralement « ouverture céleste »). Ce penseur alla très loin dans la compréhension d’aspects importants de la philosophie occidentale, qu’il mit en rapport critique avec des convictions qui lui venaient de sa tradition bouddhiste. Cet article s’efforce donc de bien interpréter son approche vigoureuse et originale. Finalement, nous indiquons brièvement des pistes de renouveau pour une réflexion théologique de plus en plus mondialisée, soucieuse non seulement d’explorer les perspectives japonaises, mais encore de réagir avec créativité.
Relation et responsabilité
Authors: Nadeau Denise 
Published: October 2013

Qu’est-ce qui constitue une réponse éthique au dévoilement de la vérité qui s’est passé dans le contexte des auditions de la Commission de vérité et réconciliation au Québec et au Canada ? En utilisant l’autoethnographie et la structure de la théologie contextuelle, l’auteur se faufile à travers l’exemple de l’histoire de sa famille à Gespe’gewa’gi (Gaspé). L’article montre comment l’identité coloniale des colons et leur blancheur sont liées à la théologie chrétienne Euro-centrique et informent celle-ci. Après avoir considéré l’expérience autochtone de la terre et des enseignements ancestraux sur la relation, la responsabilité et les protocoles, l’article se base sur des exemples herméneutiques écologiques et la théologie féministe postcoloniale pour récupérer au coeur des Écritures chrétiennes de la responsabilité et de la réciprocité, à la fois dans l’Alliance et les traditions radicales de don. L’article invite les lecteurs à entamer un processus de décolonisation d’eux-mêmes et de leurs traditions pour aller de l’avant sur le chemin de la réconciliation, sur un pied d’égalité avec les peuples autochtones, leurs partenaires.
Co‐firing technology for the preparation of asymmetric oxygen transporting membranes based on BSCF and Zr‐doped BSCF
Authors: Pippardt U. , Böer J. , Kiesel L. , Kircheisen R. , Kriegel R. , Voigt I. 
Published: October 2013

SignificanceAsymmetric tubular membranes with a length of 450 mm were prepared in one step by co‐firing of a green support coated by slurry. BSCF (Ba0.5Sr0.5Co0.8Fe0.2O3‐δ) and Zr‐doped BSCF3Zr (Ba0.5Sr0.5(Co0.8Fe0.2)0.97Zr0.03O3‐δ) were used for the separation layer as well as for the porous support, latter one together with PMMA microspheres as a pore forming agent. The gas leakage at room temperature was below 0.003 mL STP/(cm2·min). Oxygen fluxes up to 12 mL STP/(cm2·min) were observed at 900°C in vacuo operation mode. The oxygen flux increased with growing driving force but the slope of the curve flattened at higher driving forces probably caused by limiting surface exchange and pressure losses inside the porous support. The oxygen permeation of asymmetric BSCF tubes was slightly higher compared to BSCF3Zr and exceeded the oxygen flux of a monolithic BSCF membrane by a factor of 4 at comparable operation conditions. © 2013 American Institute of Chemical Engineers AIChE J, 60: 15–21, 2014
Manual lateralization in wild redfronted lemurs (Eulemur rufifrons) during spontaneous actions and in an experimental task
Authors: Schnoell Anna V. , Huebner Franziska , Kappeler Peter M. , Fichtel Claudia 
Published: October 2013

ABSTRACTThe dominant use of one hand is a striking feature of humans, but manual lateralization can be found in a variety of other species as well. In primates, the lateralization in hand use varies among species and several theories such as the “postural origin,” “task complexity,” or “development theory” have been suggested to explain this variation. In order to contribute comparative data on this phenomenon from a basal primate, we studied manual lateralization in wild redfronted lemurs (Eulemur rufifrons). Data were collected on four groups at Kirindy Forest, western Madagascar, during spontaneous actions and by confronting them with artificial feeding boxes. The lemurs did not exhibit manual lateralization on a group level in either condition. More individuals showed a hand preference in the experimental task, and the preferences were stronger compared to spontaneous actions. The direction of individual hand preferences was not consistent across the two conditions. The results of this study show that measuring manual laterality in different contexts can yield different results. Manual lateralization in wild redfronted lemurs therefore seems to be flexible and situation dependent and probably not ecologically relevant in their natural habitat. Am J Phys Anthropol 153:61–67, 2014. © 2013 Wiley Periodicals, Inc.
Adaptive Regulation Against Unknown Narrow Band Disturbances Applied to the Flying Height Control in Data Storage Systems
Authors: Wu Zhizheng , Liu Mei 
Published: October 2013

AbstractThis paper presents an adaptive regulation approach in linear systems against exogenous narrow band inputs such as disturbances or reference signals consisting of a linear combination of biased sinusoids with unknown amplitudes, frequencies, and phases. The design of the regulator is based on considering a Q‐parameterized set of stabilizing controllers for the linear system, where an adaptive FIR filter with fixed IIR filtering is adopted as the Q parameter. The goal of the adaptation is to search within the set of stabilizing controllers for a controller, or equivalently a Q parameter, that yields regulation in the closed loop system. The proposed adaptive regulation algorithm is applied to an active suspension beam system, which is motivated by the flying height control problem in data storage systems. The experimental result of the closed loop system shows the effectiveness of the proposed adaptive regulator in achieving the desired tracking performance under unknown exogenous disturbances.
Reentrant condensation of lysozyme: Implications for studying dynamics of lysozyme in aqueous solutions of lithium chloride
Authors: Mamontov Eugene , O'Neill Hugh 
Published: October 2013

ABSTRACTRecent studies have outlined the use of eutectic solutions of lithium chloride in water to study microscopic dynamics of lysozyme in an aqueous solvent that is remarkably similar to pure water in many respects, yet allows experiments over a wide temperature range without solvent crystallization. The eutectic point in a (H2O)R(LiCl) system corresponds to R ≈ 7.3, and it is of interest to investigate whether less‐concentrated aqueous solutions of LiCl could be used in low‐temperature studies of a solvated protein. We have investigated a range of concentrations of lysozyme and LiCl in aqueous solutions to identify systems that do not show phase separation and avoid solvent crystallization on cooling down. Compared to the lysozyme concentration in solution, the concentration of LiCl in the aqueous solvent plays the major role in determining systems suitable for low‐temperature studies. We have observed interesting and rich phase behavior reminiscent of reentrant condensation of proteins. © 2013 Wiley Periodicals, Inc. Biopolymers 101: 624–629, 2014.
The Role of 2,6‐Diaminopyridine Ligands in the Isolation of an Unprecedented, Low‐Valent Tin Complex
Authors: Flock Johanna , Suljanovic Amra , Torvisco Ana , Schoefberger Wolfgang , Gerke Birgit , Pöttgen Rainer , Fischer Roland C. , Flock Michaela 
Published: October 2013

AbstractStabilization of the central atom in an oxidation state of zero through coordination of neutral ligands is a common bonding motif in transition‐metal chemistry. However, the stabilization of main‐group elements in an oxidation state of zero by neutral ligands is rare. Herein, we report that the transamination reaction of the DAMPY ligand system (DAMPY=2,6‐[ArNH‐CH2]2(NC5H3) (Ar=C6H3‐2,6‐iPr2)) with Sn[N(SiMe3)2]2 produces the DIMPYSn complex (DIMPY=(2,6‐[ArNCH]2(NC5H3)) with the Sn atom in a formal oxidation state of zero. This is the first example of a tin compound stabilized in a formal oxidation state of zero by only one donor molecule. Furthermore, three related low‐valent SnII complexes, including a [DIMPYSnIICl]+[SnCl3]− ion pair, a bisstannylene DAMPY{SnII[N(SiMe3)2]2}2, and the enamine complex MeDIMPYSnII, were isolated. Experimental results and the conclusions drawn are also supported by theoretical studies at the density functional level of theory and 119Sn Mössbauer spectroscopy.
Organizational culture evolution in temporary organizations: The case of the 2010 Olympic Winter Games
Authors: Parent Milena M. , MacIntosh Eric W. 
Published: October 2013

AbstractWe examine organizational culture evolution within a temporary organization, specifically the 2010 Olympic Winter Games organizing committee, by exploring aspects of the work environment. Analysis of organizational artifacts, ethnographic field‐notes, and member‐checking demonstrated that liminal spaces facilitated socialization and cultural crystallization, which in turn assisted members' performance. Organizational structure, socialization, and cultural evolution were parallel processes that impacted each other. The concept of time (i.e., velocity) had a direct influence on subculture crystallization. The paper further integrates stakeholder/client interactions and draws on the role of leadership and cultural infusion mechanisms to demonstrate how culture evolves in temporary organizations. Copyright © 2013 ASAC. Published by John Wiley & Sons, Ltd.
Factors associated with recovery from anorexia nervosa: A population‐based study
Authors: Keski‐Rahkonen Anna , Raevuori Anu , Bulik Cynthia M. , Hoek Hans W. , Rissanen Aila , Kaprio Jaakko 
Published: October 2013

ABSTRACTBackground To examine factors associated with the outcome of anorexia nervosa among women from the general population.Method Women (N = 2,881) from the 1975–1979 birth cohorts of Finnish twins were screened for lifetime DSM‐IV anorexia nervosa (N = 55 cases) using questionnaires and the SCID interview. Potential factors associated with the likelihood of recovery were addressed in the same assessment. Recovery was defined as restoration of weight, menstruation, and the absence of bingeing and purging for at least one year prior to assessment. Using two‐tailed t tests and Pearson's chi‐square tests, we contrasted recovered (N = 39) and unrecovered (N = 16) women. We then used logistic regression adjusted for duration of illness and Cox proportional hazard models to account for the variable lengths of illness on prognostic factors.Results Unrecovered women were more likely to suffer from depressive symptoms prior to eating disorder onset (18.8% vs. 2.6%, p = 0.04), remain unemployed (18.8% vs. 2.6%, p = 0.04), report dissatisfaction with their current partner/spouse (p = 0.02), and report high perfectionism (p = 0.05) than were recovered women. When duration of illness was accounted for in the analyses, premorbid depression was the sole factor significantly associated with decreased likelihood of recovery (hazard ratio 0.17, 95% confidence interval: 0.03–0.89).DiscussionPredicting the course of anorexia remains fraught with difficulty, but premorbid depressive symptoms are associated with poor outcome of anorexia nervosa in the general population. © 2013 Wiley Periodicals, Inc. (Int J Eat Disord 2014; 47:117–123)