bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bayesian spatial interpolation as an emerging cognitive radio application for coverage analysis in cellular networks
Authors: Sayrac Berna , Galindo‐Serrano Ana , Jemaa Sana Ben , Riihijärvi Janne , Mähönen Petri 
Published: October 2013

ABSTRACTCoverage prediction is one of the most important aspects of cellular network optimisation for mobile operators due to the highly competitive market conditions and the obligations towards the regulatory authorities. Although wireless communications research is considerably diversifying, including new areas, problems and concepts with a notable pace, cellular coverage still remains as a core subject of research for operators because of the obligation to adapt to the continuously evolving wireless ecosystem, with new radio access technologies/architectures, emerging applications and innovative cellular concepts. This paper presents the application of a powerful mathematical tool coming from spatial statistics, Bayesian kriging, to construct a radio environment map (REM) for the purpose of cellular coverage prediction as an emerging application of cognitive radio techniques in cellular networks. The proposed approach provides an efficient alternative to the conventional manual coverage prediction on the basis of drive tests, which are expensive, polluting and slow solutions for obtaining the ‘ground‐truth’ information. Bayesian kriging‐based REMs allow to estimate the coverage situation in those regions where the operator lacks direct information. Our approach can be directly used by operators for the cellular network coverage optimisation. We evaluate the accuracy of the proposed REM construction approach for a long term evolution network with two mesh sizes using highly realistic data sets. Results show that the Bayesian kriging interpolation technique has a good accuracy for cellular coverage prediction, and this accuracy is directly related with the mesh size. Copyright © 2013 John Wiley & Sons, Ltd.
Initial Preparation and Characterization of Single Step Fabricated Intermediate Temperature Solid Oxide Fuel Cells (IT‐SOFC)
Authors: Sivasankaran V. , Combemale L. , Pera M. C. , Caboche G. 
Published: October 2013

AbstractIn this study, facile tape casting process has been successfully carried out to fabricate an unit anode supported intermediate temperature solid oxide fuel cell (IT‐SOFC) with four different layers: a composite cathode which is a mix of La0.6Sr0.4Co0.2Fe0.8O3 (LSCF48) and Gd0.1Ce0.9O1.9 (GDC10), GDC10 as thin electrolyte layer, NiO‐GDC10 without pore former as thin anode functional layer (AFL), and anode support layer of NiO‐GDC10 with carbon pore former. The multi‐layer was sintered once to produce an unit planar cell. An OCV of 1.002 V at 500 °C, and maximum power density of 466 mW cm–2 at 648 °C are obtained. These results indicate negligible leakage of fuel through electrolyte. Furthermore scanning electron microscope (SEM) revealed crack free dense electrolyte. The single step sintering process gives an unit planar cell, which exhibits good performance without use of sintering aids, co‐pressing, and lamination of green tape.
The faces of pain: A cluster analysis of individual differences in facial activity patterns of pain
Authors: Kunz M. , Lautenbacher S. 
Published: October 2013

AbstractBackgroundThere is general agreement that facial activity during pain conveys pain‐specific information but is nevertheless characterized by substantial inter‐individual differences. With the present study we aim to investigate whether these differences represent idiosyncratic variations or whether they can be clustered into distinct facial activity patterns.MethodsFacial actions during heat pain were assessed in two samples of pain‐free individuals (n = 128; n = 112) and were later analysed using the Facial Action Coding System. Hierarchical cluster analyses were used to look for combinations of single facial actions in episodes of pain. The stability/replicability of facial activity patterns was determined across samples as well as across different basic social situations.ResultsCluster analyses revealed four distinct activity patterns during pain, which stably occurred across samples and situations: (I) narrowed eyes with furrowed brows and wrinkled nose; (II) opened mouth with narrowed eyes; (III) raised eyebrows; and (IV) furrowed brows with narrowed eyes. In addition, a considerable number of participants were facially completely unresponsive during pain induction (stoic cluster). These activity patterns seem to be reaction stereotypies in the majority of individuals (in nearly two‐thirds), whereas a minority displayed varying clusters across situations.ConclusionThese findings suggest that there is no uniform set of facial actions but instead there are at least four different facial activity patterns occurring during pain that are composed of different configurations of facial actions. Raising awareness about these different ‘faces of pain’ might hold the potential of improving the detection and, thereby, the communication of pain.
Use of Magnetic Nanoparticles and a Microplate Reader with Fluorescence Detection to Detect C‐reactive Protein
Authors: Yang Jian‐Ying , Lin Yi‐Jyun , Su Mei‐Yu , Li Wen‐Jie , Liu Mine‐Yine 
Published: October 2013

AbstractTwo approaches based on magnetic nanoparticles (MNPs) have been compared to analyze C‐reactive protein (CRP). Both the non‐eluted and eluted MNP‐1°Ab‐CRP‐2°Ab/FITC bioconjugates were measured by a microplate reader with fluorescence detection. The linear ranges for the non‐elution and elution methods were 10‐200 and 0.1‐2.0 μg/mL, respectively. The concentration limits of detection for the nonelution and elution methods were 2.91 and 0.04 μg/mL, respectively. The non‐ elution method gave better precision and recovery than the elution method, and also showed comparable results to that of ELISA assay. The non‐elution method is simple and only needs minute volumes of sample and buffer. There is no need to dissociate the fluorescence probes from the bioconjugates, and the fluorescence signals can be directly measured on the MNP‐1°Ab‐CRP‐2°Ab/FITC bioconjugates. Meanwhile, samples with high CRP concentrations are not necessarily to be diluted before analysis.
Vacuum Ultraviolet and Soft X‐ray Photoelectron Spectroscopy of Liquid Beams Using a Hemispherical Photoelectron Spectrometer with a Multistage Differential Pumping System
Authors: Nishizawa Kiyoshi , Ohshimo Keijiro , Suzuki Toshinori 
Published: October 2013

AbstractWe present photoelectron spectroscopy of liquid beams using a high‐resolution hemispherical photoelectron spectrometer with a multistage differential pumping system developed in our laboratory. Intense soft X‐ray synchrotron radiation (500‐1200 eV) at SPring‐8 and a relatively large detection solid angle (1.5 × 10−2 π sr) of the spectrometer enable highly efficient measurements of X‐ray photoelectron spectra of liquids. Vacuum ultraviolet photoelectron spectroscopy using the same spectrometer provides sufficiently high spectral resolution to resolve rotational isomers of gas‐phase molecules.
Tips and troubleshooting for transpapillary metal stenting for distal malignant biliary obstruction
Authors: Hamada Tsuyoshi , Isayama Hiroyuki , Nakai Yousuke , Kogure Hirofumi , Yamamoto Natsuyo , Koike Kazuhiko 
Published: October 2013

Abstract Endoscopic placement of a self‐expandable metal stent (SEMS) has become a mainstream treatment to relieve non‐resectable distal malignant biliary obstructions—its longer patency and cost‐effectiveness were demonstrated in comparison with plastic biliary stents in several randomized controlled trials. Despite advances in ERCP devices and SEMSs themselves to enable safe and effective biliary drainage via a SEMS, several significant aspects of the endoscopic placement of SEMS must be considered; otherwise, SEMS‐related complications and early SEMS dysfunction may occur. Also, SEMS dysfunction, including occlusion and migration, occurs at a certain frequency in the long term, and appropriate reintervention is necessary to preserve the quality of life of the patient. Here, we present tips for endoscopic transpapillary SEMS placement for distal malignant biliary obstruction and reintervention for SEMS dysfunction.
Value of diffusion‐weighted and gadolinium‐enhanced MRI for the diagnosis of pelvic recurrence from colorectal cancer
Authors: Colosio Alban , Soyer Philippe , Rousset Pascal , Barbe Coralie , Nguyen Francis , Bouché Olivier , Hoeffel Christine 
Published: October 2013

PurposeTo prospectively assess the added value of gadolinium‐enhanced and diffusion‐weighted (DWI) MRI for the diagnosis of pelvic recurrence from colorectal cancer (CRC).Materials and MethodsFifty‐two patients with suspected pelvic recurrence from CRC underwent pelvic MRI with T2‐weighted (“T2”), gadolinium‐enhanced fat‐suppressed T1‐weighted (“gadolinium”) and DWI MR sequences. Three readers (senior radiologist: R1, two residents: R2, R3) scored the likelihood of recurrence on “T2,” “T2 + DWI,” and “T2 + Gadolinium.”ResultsTwenty‐seven patients had 42 sites of pelvic recurrence. On “T2,” R1 achieved AUC of .95, sensitivity 88.4%, specificity 95.2%. For R2, these figures were .89, 81.4%, 90.5%, for R3 .90, 83.7%, 76%. Both Gadolinium injection and DWI significantly improved AUCs for residents but not for the senior radiologist: up to .988 (R2, P = 0.006) and to .98 (R3, P = 0.01) with DWI and to .96 (R2, P = 0.04), .98 (R3, P = 0.01) after gadolinium. All readers achieved slightly better AUCs with “T2 + DWI” than with “T2+Gadolinium” but not significantly (P = 0.68, P = 0.11, P = 0.3; respectively).ConclusionFor diagnosis of pelvic recurrence from CRC, both DWI and gadolinium‐enhanced MRI significantly increase diagnostic performances compared with “T2” MRI for residents. DWI may be helpful in patients with contra‐indications to intravenous administration of gadolinium. J. Magn. Reson. Imaging 2014;40:306–313. © 2013 Wiley Periodicals, Inc.
Apparent diffusion coefficient (ADC) measurement in endometrial carcinoma: Effect of region of interest methods on ADC values
Authors: Inoue Chie , Fujii Shinya , Kaneda Sachi , Fukunaga Takeru , Kaminou Toshio , Kigawa Junzo , Harada Tasuku , Ogawa Toshihide 
Published: October 2013

PurposeTo investigate the influence of different‐shaped regions of interest (ROIs) on tumor apparent diffusion coefficient (ADC) measurements and interobserver variability in endometrial carcinoma.Materials and MethodsSixty‐nine patients (age range, 32–92 years; mean, 61 years) were evaluated in this retrospective study. Patients had undergone magnetic resonance (MR) examinations including diffusion‐weighted imaging (DWI) using a 3.0‐T MR system. Two readers measured tumor ADCs using four ROI methods: freehand ROI; square ROI; round ROI; and five small, round ROIs. Minimum and mean ADCs were obtained. The interclass correlation coefficient (ICC) was statistically analyzed to assess measurement reliability. Repeated‐measures analysis of variance was used for comparisons of ADCs measured with each ROI method.ResultsICCs were 0.93 (minimum ADC) / 0.93 (mean ADC) for freehand ROIs, 0.94/0.95 for square ROIs, 0.94/0.95 for round ROIs, and 0.95/0.96 for five small, round ROIs. All ROI methods indicated excellent correlations. Each minimum ADC was significantly different except between square ROI and round ROI (P < 0.001). Mean ADCs showed significant differences only between freehand ROI and the other ROI methods (P < 0.001).ConclusionROI shape has no marked influence on ICC in endometrial carcinoma. Compared with minimum ADCs, mean ADCs are suggested to provide more stable results regardless of the ROI method. J. Magn. Reson. Imaging 2014;40:157–161. © 2013 Wiley Periodicals, Inc.
Multiparameter MRI analysis of the time course of induced muscle damage and regeneration
Authors: Feng Shu , Chen Daniel , Kushmerick Martin , Lee Donghoon 
Published: October 2013

PurposeTo test the ability of different magnetic resonance imaging (MRI) modalities to discriminate the time course of damage and regeneration in a model of acute, toxin‐induced muscle damage.Materials and MethodsWe analyzed the time course of tissue and cellular changes in mouse lower limb musculature following localized injection of myotoxin by T2, magnetization transfer (MT), and diffusion‐weighted MRI. We also used T1‐weighted imaging to measure leg muscle volume. In addition, postmortem histological analysis of toxin‐injected muscles was compared to uninjected controls.ResultsThe damages detected by the MRI modalities are transient and recover within 3 weeks. Muscle water diffusivity and edema measured by leg volume increased within the first hours after injection of the toxin. The rate constant for volume increase was 0.65 ± 0.11 hr−1, larger than the increase in T2 (0.045 ± 0.013 hr−1) and change in MT ratio (0.028 ± 0.021 hr−1). During repair phase, the rate constants were much smaller: 0.022 ± 0.004 hr−1, 0.013 ± 0.0019 hr−1 and 0.0042 ± 0.0016 hr−1 for volume, T2, and MT ratio, respectively. Histological analyses confirmed the underlying cellular changes that matched the progression of MR images.ConclusionThe kinetics of change in the MRI measurements during the progression of damage and repair shows MRI modalities can be used to distinguish these processes. J. Magn. Reson. Imaging 2014;40:779–788. © 2013 Wiley Periodicals, Inc.
Clinical application of the Provox NiD voice prosthesis: A longitudinal study
Authors: Lewin Jan S. , Portwood Martha A. , Wang Yijia , Hutcheson Katherine A. 
Published: October 2013

Objectives/HypothesisTo evaluate the indications, complications, and device life of the Provox NiD in a large cohort at a tertiary US cancer center.Study DesignLongitudinal retrospective cohort study.MethodsWe reviewed the records of patients who used the NiD prosthesis (2005–2011) for general indicators, device life, and complications.ResultsOne hundred eighty‐six patients who used the NiD were included (median follow‐up: 21.4 months). The NiD was placed at initial fit in 41 (22%) patients, whereas 145 (78%) tried an NiD after using another type of prosthesis. Most patients used the NiD similarly to an indwelling device. Median NiD device life was significantly longer than that of other nonindwelling prostheses (45 vs. 29 days, P = .0061), and did not significantly differ from that of standard indwelling devices (45 vs. 50 days, P = .4263). Thirty‐eight percent (71 of 189) of NiD users had a history of early leakage (<8 weeks) using a different prosthesis before trying the NiD. Among patients with a pre‐existing history of early leakage, almost 90% of NiD prostheses outperformed the device life of other products.ConclusionsThe NiD prosthesis offers satisfactory device life on a par with indwelling prostheses in our cohort of NiD users. Coupled with favorable published airflow characteristics and satisfactory tracheoesophageal voice, these data suggest that the NiD offers a durable, low‐cost prosthetic alternative in contemporary practice. A unique indication for NiD may be improved device life in some patients with a history of early leakage.Level of Evidence4. Laryngoscope, 124:1585–1591, 2014
Decreasing incidence of nasal adenocarcinoma in Wycombe woodworkers
Authors: Rourke Thomas , Grover Sharon , Wager Nadia , Capper John 
Published: October 2013

Objectives/HypothesisThe association between adenocarcinoma of the ethmoid sinuses and woodworkers was identified in the 1960s. Working conditions were poor, and epidemiological studies suggested the carcinogenic agent was hardwood dust created during furniture production. The objectives of this article were to describe the declining incidence of this disease in High Wycombe woodworkers between 1965 and 2012 and to explore the potential reasons for this occurrence.Study DesignProspective case series performed at Wycombe General Hospital.MethodsData were collected for all cases of nasal adenocarcinoma presenting in woodworkers to Wycombe General Hospital between 1965 and 2012. Statistical analysis was performed by calculating the Spearman rank correlation coefficient when comparing different variables from the data.ResultsA total of 105 reported cases of nasal adenocarcinoma were identified among woodworkers working in High Wycombe. Between 1965 and 2012, there was a statistically significant reduction in the incidence of the disease. Statistical analysis suggests that the declining incidence is not solely due to the reducing numbers of workers in the industry. Further analysis suggests a significant relationship between the individuals' ages at which diagnosis was made and the year in which they were diagnosed. Importantly, diagnoses made since 1980 were increasingly among people in their retirement years.ConclusionsThis article describes a statistically significant overall reduction in the incidence of nasal adenocarcinoma in Wycombe woodworkers. This is thought to not solely be due to declining numbers of workers within the industry but also improvements in working conditions following government legislation.Level of Evidence4 Laryngoscope, 124:1078–1082, 2014
Aircraft wind measurements to assess a coupled WRF‐CALMET mesoscale system
Authors: Gioli Beniamino , Gualtieri Giovanni , Busillo Caterina , Calastrini Francesca , Gozzini Bernardo , Miglietta Franco 
Published: October 2013

ABSTRACTLong term aircraft observations of wind magnitude along an ∼250 km flight track in central Italy, performed over 1.5 years, are compared with the output of an existing mesoscale prognostic‐diagnostic (WRF‐CALMET) model chain aimed at assessing wind potential maps at regional scale. Aircraft measurements are used to evaluate model performance along spatial and temporal transects at moderate altitude from the ground (∼75 m), where observational frameworks are rarely available. Spatial wind analysis was capable of assessing overall model performance, while highlighting some limitations: the implemented models have better performance in inland areas with respect to coastal areas, while they are capable of representing diurnal variability in all regions correctly. Overall agreement is within 3% in the cold season and 16% in the warm season, while the greatest differences, above 30%, are obtained in coastal areas in the summer. The hypothesis supporting these results is that summer sea breeze regimes that develop consistently from the coast through the interior land are not entirely resolved from mesoscale modelling. Finally, the model performance and limitations related to complex orography are highlighted. This study demonstrates the added value that may derive from aircraft wind measurements as an additional observational framework for applied meteorology studies.
A proximal point method for the sum of maximal monotone operators
Authors: Xiao Hongying , Zeng Xueying 
Published: October 2013

AbstractIn this paper, we concentrate on the maximal inclusion problem of locating the zeros of the sum of maximal monotone operators in the framework of proximal point method. Such problems arise widely in several applied mathematical fields such as signal and image processing. We define two new maximal monotone operators and characterize the solutions of the considered problem via the zeros of the new operators. The maximal monotonicity and resolvent of both of the defined operators are proved and calculated, respectively. The traditional proximal point algorithm can be therefore applied to the considered maximal inclusion problem, and the convergence is ensured. Furthermore, by exploring the relationship between the proposed method and the generalized forward‐backward splitting algorithm, we point out that this algorithm is essentially the proximal point algorithm when the operator corresponding to the forward step is the zero operator. Copyright © 2013 John Wiley & Sons, Ltd.
REV‐ERB‐ALPHA circadian gene variant associates with obesity in two independent populations: Mediterranean and North American
Authors: Garaulet Marta , Smith Caren E. , Gomez‐Abellán Purificación , Ordovás‐Montañés María , Lee Yu‐Chi , Parnell Laurence D. , Arnett Donna K. , Ordovás José M. 
Published: October 2013

ScopeDespite the solid connection between REV‐ERB and obesity, the information about whether genetic variations at this locus may be associated with obesity traits is scarce. Therefore our objective was to study the association between REV‐ERB‐ALPHA1 rs2314339 and obesity in two independent populations.Methods and resultsParticipants were 2214 subjects from Spanish Mediterranean (n = 1404) and North American (n = 810) populations. Anthropometric, biochemical, dietary, and genotype analyses were performed. We found novel associations between the REV‐ERB‐ALPHA1 rs2314339 genotype and obesity in two independent populations: in Spanish Mediterranean and North American groups, the frequency of the minor‐allele‐carriers (AA+ AG) was significantly lower in the “abdominally obese” group than in those of the “nonabdominally obese” group (p < 0.05). Minor allele carriers had lower probability of abdominal obesity than noncarriers, and the effect was of similar magnitude for both populations (OR ≈ 1.50). There were consistent associations between REV‐ERB‐ALPHA1 genotype and obesity‐related traits (p < 0.05). Energy intake was not significantly associated with REV‐ERB‐ALPHA1 rs2314339. However, physical activity significantly differed by genotype. A significant interaction between the REV‐ERB‐ALPHA1 variant and monounsaturated‐fatty‐acids (MUFA) intake for obesity was also detected in the Mediterranean population.ConclusionThis new discovery highlights the importance of REV‐ERB‐ALPHA1 in obesity and provides evidence for the connection between our biological clock and obesity‐related traits.
Formulation and Characterization of a New Nitroglycerin‐Free Double Base Propellant
Authors: Reese David A. , Groven Lori J. , Son Steven F. 
Published: October 2013

AbstractDouble base propellants composed of nitrocellulose (NC) and nitroglycerine (NG) are widely used. However, the inclusion of liquid NG presents both stability and performance problems: the NG may migrate from the propellant in storage, and it softens the propellant at high inclusion levels. In this work, the novel nitrate ester 1,4‐dinitrato‐2,3‐dinitro‐2,3bis(nitratomethylene) butane (SMX) is considered as a replacement for NG in a double base propellant. Thermochemical calculations indicate improved performance when compared with the common double base propellant JA2 at SMX loadings above 40 wt‐%. Also, since SMX is a room temperature solid, migration may be mitigated. Both unplasticized and plasticized propellants were formulated to enable the study of the interaction of SMX with nitrocellulose. Thermal analysis of unplasticized propellant showed a distinct melt‐recrystallization curve, which indicates that a solid phase solution is being formed between SMX and NC, and that SMX would not act as plasticizer. Analysis of propellant prepared with diethyleneglycol dinitrate (DEGDN) plasticizer indicates that the SMX is likely dissolved in the DEGDN. The plasticized material also showed similar hardness and modulus to JA2. Safety characterization showed that sensitivity is similar to JA2. In short, replacing NG with SMX results in a new family of propellants with acceptable safety characteristics and which may also offer improved theoretical performance.