bluuebunny/crossref_metadata_2025_split huggingface dataset:
Environmental responses to Lateglacial climatic fluctuations recorded in the sediments of pre‐Alpine Lake Mondsee (northeastern Alps)
Authors: Lauterbach Stefan , Brauer Achim , Andersen Nils , Danielopol Dan L. , Dulski Peter , Hüls Matthias , Milecka Krystyna , Namiotko Tadeusz , Obremska Milena , Von Grafenstein Ulrich ,   Declakes Participants
Published: March 2011

AbstractInvestigation of the sedimentary record of pre‐Alpine Lake Mondsee (Upper Austria) focused on the environmental reaction to rapid Lateglacial climatic changes. Results of this study reveal complex proxy responses that are variable in time and influenced by the long‐term evolution of the lake and its catchment. A new field sampling approach facilitated continuous and precisely controlled parallel sampling at decadal to sub‐annual resolution for µ‐XRF element scanning, carbon geochemistry, stable isotope measurements on ostracods, pollen analyses and large‐scale thin sections for microfacies analysis. The Holocene chronology is established through microscopic varve counting and supported by accelerator mass spectrometry 14C dating of terrestrial plant macrofossils, whereas the Lateglacial age model is based on δ18O wiggle matching with the Greenland NGRIP record, using the GICC05 chronology. Microfacies analysis enables the detection of subtle sedimentological changes, proving that depositional processes even in rather large lake systems are highly sensitive to climate forcing. Comparing periods of major warming at the onset of the Lateglacial and Holocene and of major cooling at the onset of the Younger Dryas reveals differences in proxy responses, reflecting threshold effects and ecosystem inertia. Temperature increase, vegetation recovery, decrease of detrital flux and intensification of biochemical calcite precipitation at the onset of the Holocene took place with only decadal leads and lags over a ca. 100 a period, whereas the spread of woodlands and the reduction of detrital flux lagged the warming at the onset of the Lateglacial Interstadial by ca. 500–750 a. Cooling at the onset of the Younger Dryas is reflected by the simultaneous reaction of δ18O and vegetation, but sedimentological changes (reduction of endogenic calcite content, increase in detrital flux) were delayed by about 150–300 a. Three short‐term Lateglacial cold intervals, corresponding to Greenland isotope substages GI‐1d, GI‐1c2 and GI‐1b, also show complex proxy responses that vary in time. Copyright © 2011 John Wiley & Sons, Ltd.
Validation of a chrysophyte stomatocyst‐based cold‐season climate reconstruction from high‐Alpine Lake Silvaplana, Switzerland
Authors: De Jong Rixt , Kamenik Christian 
Published: March 2011

AbstractFor the reliable assessment of past climate variability, quantitative reconstructions of seasonal temperatures are required. Currently, reconstructions of cold‐season temperatures are scarce, because most biological proxies are biased towards the growing season. Here we test the potential of chrysophyte stomatocysts (or simply ‘cysts’; siliceous resting stages of the golden‐brown algae) as a proxy for cold‐season temperature. Climate reconstructions based on biological proxies are commonly constructed using transfer functions derived from calibration in space. However, the performance of these reconstructions is rarely tested by direct comparison with meteorological data due to limitations of sample resolution or chronological control. We compare a cyst‐based near‐annual reconstruction of ‘date of spring mixing’ from the varved sediments of Lake Silvaplana (Swiss Alps) spanning AD 1870–2004 with climate variables from the same period measured at the lake shore. The high correlation between cyst‐based ‘date of spring mixing’ and cold‐season temperature demonstrates the ability of chrysophyte cysts to archive cold‐season temperature variability. Lake eutrophication, which was extensive during the last 50 years, had no obvious effect on the cyst‐based reconstruction. This study underlines the high potential of chrysophyte cysts as a quantitative proxy for cold‐season climate reconstructions. Copyright © 2011 John Wiley & Sons, Ltd.
Exotic pollen as an indicator of variable atmospheric circulation over the Labrador Sea region during the mid to late Holocene
Authors: Jessen Catherine A. , Solignac Sandrine , Nørgaard‐Pedersen Niels , Mikkelsen Naja , Kuijpers Antoon , Seidenkrantz Marit‐Solveig 
Published: March 2011

AbstractVariability in the abundance of exotic (non‐native) pollen in sediment cores has long been considered as a potential proxy for changing atmospheric circulation, but the difficulty of gaining sufficient total exotic pollen and the incomplete understanding of atmospheric pollen transport patterns has hindered its application. In light of recent advances in the study of pollen transport, we present an exotic pollen record from two fjord sediment cores taken from the west (Placentia Bay, Newfoundland) and east (Narsaq Sund, Greenland) Labrador Sea as a basis for studying variations in regional atmospheric circulation. The two cores cover the last ca. 5500 years and indicate a shift in dominant spring/summer air masses at ca. 2000 (southern Greenland) and 3000 cal a BP (Newfoundland) transporting reduced concentrations of pollen from southerly and south‐westerly vegetation zones. This may suggest a shift away from more dominantly zonal atmospheric circulation (a feature of positive North Atlantic Oscillation years) to more frequent meridional circulation. These results support sea ice/sea‐surface temperature proxy reconstructions from Newfoundland, investigated as part of the same project, which also suggest increased winter atmospheric circulation during the early part of the time period studied. In this region, more positive North Atlantic Oscillation years, and therefore more zonal atmospheric circulation, are associated with increased atmospheric circulation in both the winter and the summer seasons. Copyright © 2011 John Wiley & Sons, Ltd.
Determination of carbethopendecinium bromide in eye drops by capillary electrophoresis with capacitively coupled contactless conductivity detection
Authors: Petrů Klára , Jáč Pavel , Šindelková Martina , Polášek Miroslav 
Published: March 2011

AbstractAntiseptic agent carbethopendecinium bromide (septonex) was determined by capillary electrophoresis with capacitively coupled contactless conductivity detection. Optimal separation of this quaternary ammonium ion was achieved in BGE of pH 7.0 containing 30 mM 2‐(N‐morpholino)ethanesulfonic acid, 12.5 mg/mL of 2‐hydroxypropyl‐β‐cyclodextrin and 20% v/v of acetonitrile. The separation was performed at 25°C in an uncoated fused silica capillary (50 μm id; total length, 60.5 cm; effective length, 50 cm) at 30 kV. Samples were injected hydrodynamically at 50 mbar for 6 s. For quantitative analysis, L‐arginine (500 μg/mL) was used as internal standard. The calibration curve was rectilinear for 25–400 μg/mL of septonex (y=0.0113x−0.0063; r2=0.9992). The LOD was 7 μg/mL of septonex (at S/N=3). The run‐to‐run repeatability (n=6) was characterized by the RSDs of 0.18% for the migration time and 1.96% for the analyte/internal standard peak area ratio. Accuracy tested by recovery experiments at three concentration levels gave recoveries of 100.27–104.22% with RSD ≤2.19%. The method was successfully applied to the assay of carbethopendecinium bromide in eye drops. Quaternary ammonium ions having structure and size close to that of carbethopendecinium may not be resolved from the analyte.
Place Attachment and Tourism Marketing: Investigating International Tourists in Singapore
Authors: Tsai Shu‐pei 
Published: March 2011

ABSTRACTThe notion of place attachment has been evidenced impactful on enhancing the performance of tourism marketing. However, the theoretical development of place attachment characterizes obvious diversities. The current study integrates and reconfigures these diversities to propose the Strategic Management of Place Attachment model. According to the model, a comprehensive attachment‐nurturing foundation is constituted by holistic tourist experience, which contains emotional pleasure, cognitive stimulation, psychological growth, self‐expressiveness and communal awareness. Place attachment, nurtured upon such foundation, converts into a powerful driver of the tourist's revisit behavior. Noteworthy insights and implications are provided to put the notion of place attachment to best use for tourism marketing. Copyright © 2011 John Wiley & Sons, Ltd.
The effect of capillary pressure on the saturation equation of two‐phase flow in porous media
Authors: Goumiri Imène R. , Prévost Jean H. , Preisig Matthias 
Published: March 2011

SUMMARYA complete and accurate simulation of two‐phase flow in porous media requires knowledge of all the controlling physics (and values of physical parameters) that play a relevant role and an understanding of the effects of each one on the solution. Of particular concern here is the effect of capillary pressure and the length scale over which it is relevant. The goal of this paper is to provide guidance onto when to include the effects of capillary pressure in the model, and onto what are the resulting length scale restrictions if those effects are to be included. Copyright © 2011 John Wiley & Sons, Ltd.
Incidence of interstitial lung disease in patients with mesothelioma in the west part of Japan
Authors: Nojiri Shuko , Gemba Kenichi , Aoe Keisuke , Kato Katsuya , Yamaguchi Takuhiro , Sato Tsugumichi , Kubota Kiyoshi , Kishimoto Takumi 
Published: March 2011

ABSTRACTPurposeIn order to evaluate the incidence of an adverse event encountered when using a new therapeutic intervention, it is essential to know the background rate of this adverse event in the same patient population. Interstitial lung disease (ILD) often develops in Japanese patients receiving treatment with anti‐neoplastic agents or other drugs. In our study, we estimated the background rate of ILD in patients with malignant mesothelioma (MM).MethodsWe conducted a retrospective cohort study of 328 Japanese patients diagnosed with MM during the period between 1996 and 2006.ResultsAfter the diagnosis of MM had been made, 21 (15 new and 6 exacerbation) of the 328 patients developed ILD. The crude baseline rate of ILD was estimated to be 0.023 (95%CI, 0.009–0.054) per patient‐year, and the baseline rate using the Poisson regression model was estimated to be 0.032 (95%CI, 0.017–0.059) per patient‐year where major therapeutic interventions were incorporated in the model. The risk of ILD was increased by surgical excision (rate ratio, 8.87; 95%CI, 2.39–33.0), pleurodesis with picibanil (rate ratio, 5.14; 95%CI, 1.63–16.3), and systemic chemotherapy using vinorelbine (rate ratio, 5.95; 95%CI, 1.22–29.0).ConclusionsOur results have implications for evaluating the safety outcomes of future studies in patients receiving treatment for MM. The development of ILD in such studies at an incidence rate higher than 0.02–0.03 per patient‐year might indicate an excess occurrence as a result of a therapeutic intervention. Copyright © 2011 John Wiley & Sons, Ltd.
Associations between benefit finding and adjustment outcomes in thyroid cancer
Authors: Costa Rachel V. , Pakenham Kenneth I. 
Published: March 2011

AbstractObjective: Few studies have examined psychological adjustment in thyroid cancer (TC) patients and no published studies have investigated benefit finding (BF) in this population. This study examined the relationship between BF and adjustment in TC using an expanded conceptualisation of adjustment that incorporated higher order cognitive and motivational states (HOCMS) and health behaviour changes, and a BF measure that accounted for positive and negative changes. Partner ratings of patient's BF and health behaviour changes were examined as sources of external validity for these constructs.Methods: 154 TC patients and 32 partners completed questionnaires.Results: Findings supported the prediction that BF would be associated with greater positive affect and positive health behaviour change, and better outcomes on the HOCMS of adjustment. After controlling for demographics and cancer stress, BF evidenced associations with greater positive affect, wisdom, spiritual wellbeing, and lifestyle changes.Conclusions: Results suggest that BF is related to health behaviour change that is corroborated by significant others and is strongly related to the existentially oriented adjustment outcomes. Copyright © 2011 John Wiley & Sons, Ltd.
Porous silicon in low moisture content dry gas by impedance spectroscopy
Authors: Islam T. , Hussain S. , Gangopadhyay A. , Islam S. S. , Harsh  
Published: March 2011

AbstractThe present work is aimed to develop porous silicon (PS)‐based sensor to measure very low humidity concentration with possible industrial applications. This work is in continuation of our previous results reported (Islam et al., Sens. Lett. 6, 746 (2008)) that the PS layer with pore morphology above 10 nm shows good response above 50 ppmV. To obtain improved sensitivity in the lower range below 50 ppmv, the porous structure with pore dimensions below 10 nm is fabricated by controlling the anodization parameters using precision Solatron Electrochemical Cell (1280C). The sensor based on capacitive principle has porous top metal electrode having pores above 1 µm formed on the porous layer by screen printing technique. The mesh structure increases the area of the electrodes and allows the moisture molecules penetrating through the mesh thus improving both sensitivity and ohmic nature of the contacts. The electrical properties were evaluated by impedance spectroscopy for different contents of water vapour in N2 gas with Agilent 4294A Impedance Analyzer.
Temperature‐dependent Raman spectroscopy of anilinium chloride near phase transition
Authors: Vishwakarma Ashok K. , Ghalsasi Pallavi , Ghalsasi Prasanna S. 
Published: March 2011

AbstractThe existence of various solid phases of organic ammonium halides, due to the presence of hydrogen bonding, has long been established but is limited to alkyl ammonium halides. On the other hand, the presence of such phase transitions was eluded in case of anilinium chloride. In the present work, we have undertaken a systematic temperature dependent Raman spectroscopic study on anilinium chloride, in the range 300–100–350 K. Spectral variation in the low frequency (100–400 cm−1) and high frequency (2500–3700 cm−1) regions around 350 and 260 K shows the signature of the phase transitions in this compound. These phase transitions were reversible in nature. The latter transition is in agreement with DSC measurements.magnified image
Leaving our comfort zone: Integrating established practices with unique adaptations to conduct survey‐based strategy research in nontraditional contexts
Authors: Kriauciunas Aldas , Parmigiani Anne , Rivera‐Santos Miguel 
Published: March 2011

AbstractAccepted practices for survey research in medium and large firms in developed economies are well established. However, as scholars explore fine‐grained phenomena in nontraditional contexts, sampling, survey design, and administration tasks may need adjusting. Through three case studies and an analysis of a decade of published work, we find that sample frame creation and survey administration require the greatest degree of adaptation, while survey instrument creation most closely follows established practices. We recommend using context‐specific sampling frames and administration techniques, though established survey instruments and scales may be used. The conclusions highlight the importance of overlaying unique adaptations onto established practices to achieve acceptable response rates, obtain accurate and robust data, and provide the basis for subsequent meaningful analysis. Copyright © 2011 John Wiley & Sons, Ltd.
Fast and expensive: the diffusion of a disappointing innovation
Authors: Greve Henrich R. 
Published: March 2011

AbstractFirms seek to imitate innovations that yield competitive advantage, but imitation can presage disappointment when the innovation value is below expectations. Empirical research has only rarely examined the diffusion of such disappointing innovations, and it is not known whether negative information from past adopters will halt the diffusion process. Likewise, the effect of heterogeneity in the innovation value on its spread has not been systematically investigated. Here, a unique dataset on a disappointing innovation is used to examine how adoption decisions are imitated, but actual use and subsequent abandonment can yield information that reduces the likelihood that others will adopt. The findings show imitation of the adoptions of other firms, but avoidance of the innovation once these firms start using the innovation or abandon it. Copyright © 2011 John Wiley & Sons, Ltd.
Choosing software metrics for defect prediction: an investigation on feature selection techniques
Authors: Gao Kehan , Khoshgoftaar Taghi M. , Wang Huanjing , Seliya Naeem 
Published: March 2011

AbstractThe selection of software metrics for building software quality prediction models is a search‐based software engineering problem. An exhaustive search for such metrics is usually not feasible due to limited project resources, especially if the number of available metrics is large. Defect prediction models are necessary in aiding project managers for better utilizing valuable project resources for software quality improvement. The efficacy and usefulness of a fault‐proneness prediction model is only as good as the quality of the software measurement data. This study focuses on the problem of attribute selection in the context of software quality estimation. A comparative investigation is presented for evaluating our proposed hybrid attribute selection approach, in which feature ranking is first used to reduce the search space, followed by a feature subset selection. A total of seven different feature ranking techniques are evaluated, while four different feature subset selection approaches are considered. The models are trained using five commonly used classification algorithms. The case study is based on software metrics and defect data collected from multiple releases of a large real‐world software system. The results demonstrate that while some feature ranking techniques performed similarly, the automatic hybrid search algorithm performed the best among the feature subset selection methods. Moreover, performances of the defect prediction models either improved or remained unchanged when over 85were eliminated. Copyright © 2011 John Wiley & Sons, Ltd.
Synthese und Kristallstruktur der N3–‐armen Nitridselenide des Formeltyps M5NSe6 (M = La–Pr) mit isolierten Tetraederdoppeln [N2M6]12+
Authors: Schurz Christian M. , Lissner Falk , Janka Oliver , Schleid Thomas 
Published: March 2011

AbstractLong a‐axes are a particularity of the crystal structures of the N3–‐poor lanthanide(III) nitride selenides with the composition M5NSe6 (monoclinic, C2/c, Z = 16; M = La: a = 5177.2(3), b = 1271.58(9), c = 785.49(5) pm, β = 89.386(7)°; M = Ce: a = 5128.4(3), b = 1260.24(8), c = 778.03(5) pm, β = 90.002(7)°; M = Pr: a = 5096.1(3), b = 1252.47(8), c = 772.61(5) pm, β = 90.705(7)°). Two [NM4]9+ tetrahedra sharing a common edge by forming angled [N2M6]12+ double units represent the main structural feature. These edge‐shared bitetrahedra reside in between layers of the defect Th3P4‐ like structure of the C‐type lanthanide sesquiselenides (M2Se3). An alternative description of the structure points out the half‐occupied cation positions (M10)3+. The discrete [N2M6]12+ units are linked with each others via four different selenide anions building up cationic$^2_{\infty}${[(N2M6)4Se14]20+} slabs. In the [100] direction they are stacked alternatingly with anionic $^2_{\infty}${[(M14Se34)(M10)2]20–} layers formed by Se2– polyhedra about the M3+ cations without any N3– ligands. Furthermore, these anionic layers offer channels filled up with (M10)3+ cations under half‐occupation conditions. The site occupation factor of 1/2 for (M10)3+ is plausible, because a full occupation of this site would reveal to high negative valence values for all Se2– anions (Se4, Se10, Se11 and Se13) that show contacts with (M10)3+.
Subgrid stabilization of Galerkin approximations of monotone operators
Authors: Guermond J.‐L. 
Published: March 2011

AbstractThis paper presents a stabilized Galerkin technique for approximating monotone linear operators in a Hilbert space. The key idea consists an introducing an approximation space that is broken up into large scales and small scales so that the bilinear form associated with the problem satisfies a uniform inf‐sup condition with respect to this decomposition. An optimal Galerkin approximation is obtained by introducing an artificial diffusion on the small scales.
Direct Multidomain Spectral Method for the Computation of Various Fluid Dynamic Problems
Authors: Raspo I. , Bontoux P. 
Published: March 2011

AbstractThis paper presents a spectral multidomain algorithm based on the influence matrix technique. This algorithm leads to a direct method without any iterative process. We show that domain decomposition allows us to use efficiently spectral approximations for the computation of problems exhibiting a singular solution or a complex geometric configuration.
Simple model for turbulent two‐phase combustion with fast chemistry
Authors: Borghi R. , Burluka A. A. 
Published: March 2011

AbstractThe principle of a sample model for atomisation and vaporisation in two‐phase flows is developed and presented. It is based on use of two quantities which are the average liquid mass fraction and the average area of the gas‐liquid interface, both taken per unit mass of two‐phase media. This model can easily be used in combustion modelling when the chemistry is very fast that is when the atomisation, vaporisation and the micro‐scale turbulent mixing are the controlling phenomena. The practical use of this model needs the values of a few constants which are determined from the comparison with the experiments.
Response Surfaces and Robust Design
Authors: Schoofs A. J. G. 
Published: March 2011

AbstractResponse surface methods can be applied for building both global and mid‐range approximation models, to be used in structural optimization as an interface between analysis tools and optimization algorithms. This approach is particularly promising in those areas, where the structural behaviour or analysis process exhibits noise, because conventional optimization strategies often fail in such situations. This capability, together with the flexible approximation interface between analysis and optimization, results in a robust optimum structural design tool. The method is illustrated by means of a car crash safety problem.
Design‐of‐Experiments Methods and their Application to Robust Multicriteria Optimization Problems
Authors: Lautenschlager U. , Eschenauer H. A. , Mistree F. 
Published: March 2011

AbstractDesign‐of‐experiments (DOE) methods are utilized to explore the design space and to build response surface models in order to facilitate the effective solution of multiobjective optimization problems. Response surface models provide an efficient means to rapidly model the trade‐off between conflicting goals. For robust design applications these approximation models are used efficiently and effectively to calculate variances due to noise factors using Taylor series expansions. This combined‐army approach is compared to Taguchi's original crossed‐array approach. The shape optimization of a flywheel with two conflicting design goals is used to illustrate the approach.