bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of a memory‐based prefilter supplementing a robust PID control system
Authors: Takao Kenji , Yamamoto Toru , Hinamoto Takao 
Published: August 2008

AbstractFor systems with uncertainties, lots of PID parameter tuning methods have been proposed from the view point of the robust stability theory. However, the control performance becomes conservative using robust PID controllers. In this paper, a new two‐degree‐of‐freedom (2DOF) controller, which can improve the tracking properties, is proposed for nonlinear systems. According to the proposed method, the prefilter is designed as the PD compensator whose control parameters are tuned by the idea of a memory‐based modeling (MBM) method. Since the MBM method is a type of local modeling methods for nonlinear systems, PD parameters can be tuned adequately in an online manner corresponding to nonlinear properties. Finally, the effectiveness of the newly proposed control scheme is numerically evaluated on a simulation example. Copyright © 2008 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society
Experimental Investigation on the Holdup Distribution of Oil‐Water Two‐Phase Flow in Horizontal Parallel Tubes
Authors: Xu J. , Wu Y. , Chang Y. , Guo J. 
Published: August 2008

AbstractAn experimental investigation was conducted to study the holdup distribution of oil and water two‐phase flow in two parallel tubes with unequal tube diameter. Tests were performed using white oil (of viscosity 52 mPa s and density 860 kg/m3) and tap water as liquid phases at room temperature and atmospheric outlet pressure. Measurements were taken of water flow rates from 0.5 to 12.5  m3/h and input oil volume fractions from 3 to 94 %. Results showed that there were different flow pattern maps between the run and bypass tubes when oil‐water two‐phase flow is found in the parallel tubes. At low input fluid flow rates, a large deviation could be found on the average oil holdup between the bypass and the run tubes. However, with increased input oil fraction at constant water flow rate, the holdup at the bypass tube became close to that at the run tube. Furthermore, experimental data showed that there was no significant variation in flow pattern and holdup between the run and main tubes. In order to calculate the holdup in the form of segregated flow, the drift flux model has been used here.
Attitudes and beliefs about hypnosis: A multicultural study
Authors: Capafons Antonio , Mendoza M. Elena , Espejo Begoña , Green Joseph P. , Lopes‐Pires Carlos , Selma M. Luisa , Flores Daniela , Morariu Marcela , Cristea Ioana , David Daniel , Pestana José , Carvallho Claudia 
Published: August 2008

AbstractThe aim of this study is to examine the effects of having personal experience and information about hypnosis over the beliefs and attitudes toward hypnosis, using a sample of students from Spain, United States, Portugal and Romania. The factor structure of the Revised Valencia Scale of Attitudes and Beliefs toward Hypnosis‐Client Version, as well as its psychometric properties are also analyzed. An exploratory factor analysis of the scale was conducted and an 8‐factor model solution similar to the one found in other versions of this scale was obtained: Help, Personal Control, Magical Solution, Interest, Collaboration, Fear, Memory/Trance and Marginal. Results also indicated that participants who had previously experienced hypnosis and/or based their knowledge of hypnosis on scientific sources scored, in general, higher in factors indicating positive attitudes and correct beliefs about hypnosis. Copyright © 2008 British Society of Experimental & Clinical Hypnosis. Published by John Wiley & Sons, Ltd.
The prognostic impact of dedifferentiation in retroperitoneal liposarcoma
Authors: Mussi Chiara , Collini Paola , Miceli Rosalba , Barisella Marta , Mariani Luigi , Fiore Marco , Casali Paolo G. , Gronchi Alessandro 
Published: August 2008

AbstractBACKGROUND.A series of patients with well differentiated (WD)/dedifferentiated (DD) retroperitoneal liposarcoma (RLS) was studied to evaluate the prognostic value of the presence, extension, and grade of the DD component.METHODS.Among 148 patients with RLS who underwent surgery over 20 years, the authors retrieved data on patients who had localized WD/DD RLS. For the current analysis, patients were included only if they had primary disease or a first recurrence at their initial presentation. The DD component, when present, was graded according to National Federation of Centers in the Fight Against Cancer (FNCLCC) criteria, and the extension of the DD component was described as a percentage. Univariate and multivariate analyses were carried out for local recurrence‐free survival (LRFS), event‐free survival (EFS), and disease‐specific survival (DSS).RESULTS.Of 93 patients who were identified, 36 patients (39%) had WD RLS, and 57 patients (61%) had DD RLS. The median follow‐up was 71 months (range, 28‐132 months). Seven patients (7.5%) developed distant metastases, including 5 patients who had DD RLS. The 5‐year DSS rate was 42% in patients with DD RLS and 71.6% in patients with WD RLS (P = .018). The corresponding rates for LRFS were 22% and 43.3%, respectively (P = .007). The presence of the DD component and its FNCLCC grade were independent prognostic factors for DSS and LRFS. The administration of radiation therapy was associated independently with better LRFS.CONCLUSIONS.Patients with high‐grade DD RLS had a worse prognosis in terms of both DSS and LRFS. The extension of the DD component and its mitotic index were relevant for EFS. The results indicated that radiation therapy may improve LRFS. These data may help stratify the risk of recurrence for patients with RLS. Clinical studies on new multimodality approaches are warranted. Cancer 2008. © 2008 American Cancer Society.
Estradiol and progesterone differentially regulate the dendritic arbor of neurons in the hypothalamic ventromedial nucleus of the female rat (Rattus norvegicus)
Authors: Griffin Gerald D. , Flanagan‐Cato Loretta M. 
Published: August 2008

AbstractThe ventromedial nucleus of the hypothalamus (VMH), with its major subdivisions, the dorsomedial and ventrolateral VMH (dmVMH and vlVMH, respectively), has been studied extensively for its role in female sexual behavior. This behavior is controlled by the vlVMH through the cellular actions of estradiol combined with progesterone. Although the effects of treatment with estradiol alone on neuronal morphology in the vlVMH have been examined, much less is known about the combined effects of estradiol and progesterone on neuronal structure. The present study employed Golgi impregnation to investigate the effects of estradiol treatment alone vs. estradiol combined with progesterone treatment on dendritic arbor of VMH neurons. The dendritic arbor of VMH neurons was somewhat different in the vlVMH vs. the dmVMH, with longer and more dendrites in the vlVMH. Estradiol treatment alone caused a marked reduction in the length of long primary dendrites in the vlVMH, but not in the dmVMH. The estradiol‐induced retraction of long primary dendrites in the vlVMH was reversed within 4 hours of progesterone treatment. The differences in the dendritic arbors of dmVMH and vlVMH provide further support for the notion that these two regions have different patterns of neural connectivity. In addition, this study is the first to report opposing effects of estradiol alone vs. estradiol plus progesterone on the dendritic arbor of neurons in the vlVMH. These results suggest a structural mechanism for estradiol alone to have a modest effect on mating behavior while setting the stage for its ample expression. J. Comp. Neurol. 510:631–640, 2008. © 2008 Wiley‐Liss, Inc.
Self‐Assembled Au Nanoparticles as Substrates for Surface‐Enhanced Vibrational Spectroscopy: Optimization and Electrochemical Stability
Authors: Fan Meikun , Brolo Alexandre G. 
Published: August 2008

AbstractThree‐dimensional nanostructured metallic substrates for enhanced vibrational spectroscopy are fabricated by self‐assembly. Nanostructures consisting of one to 20 depositions of 13 nm‐diameter Au nanoparticles (NPs) on Au films are prepared and characterized by means of AFM and UV/Vis reflection–absorption spectroscopy. Surface‐enhanced polarization modulation infrared reflection–absorption spectroscopy (PM‐IRRAS) is observed from Au NPs modified by the probe molecule 4‐hydroxythiophenol. The limitation of this kind of substrate for surface‐enhanced PM‐IRRAS is discussed. The surface‐enhanced Raman scattering (SERS) from the same probe molecule is also observed and the effect of the number of Au‐NP depositions on the SERS efficiency is studied. The SERS signal from the probe molecule maximizes after 11 Au‐NP depositions, and the absolute SERS intensities from different batches are reproducible within 20 %. In situ electrochemical SERS measurements show that these substrates are stable within the potential window between −800 and +200 mV (vs. Ag/AgCl/sat. Cl−).
Monetary costs associated with bulimia
Authors: Crow Scott J. , Frisch Maria J. , Peterson Carol B. , Croll Jillian , Raatz Susan K. , Nyman John A. 
Published: August 2008

AbstractObjective:The direct monetary costs for food and laxatives, diet pills, and diuretics used by individuals with bulimia nervosa (BN) have not been studied.Method:Ten participants with a presenting clinical diagnosis of BN completed a 7‐day food record at the outset of treatment in order to provide estimates of weekly and yearly monetary costs for food and associated symptoms.Results:Participants reported means of 3.6 purge episodes, 2.5 objective binge episodes, and 2.4 subjective binge eating episodes per week. Mean total food costs were $106.98/week (SD = $53.88) or $5,581.79/year (SD = $2,811.58). Costs associated with binge eating and purging were 32.7% of all food costs (average: $1,599.45/year).Conclusion:Financial costs of bulimia symptoms are significant, and appear to constitute a substantial minority of all food spending by individuals with BN. © 2008 by Wiley Periodicals, Inc. Int J Eat Disord 2009
Vomiting and feeling fat—Coincidence of achalasia and bulimia nervosa
Authors: Teufel Martin , Lamprecht Georg , Zipfel Stephan , Schrauth Markus , Rapps Nora , Martens Ute , Gross Gaby 
Published: August 2008

AbstractObjective:In clinical practice it is often difficult to distinguish between organic and psychological vomiting.Method:We present a case of a 34‐year‐old woman with an 18‐month history of vomiting with the initial diagnosis of bulimia nervosa (BN). However, the patient showed an unusual vomiting behavior. Therefore, further somatic diagnostic procedures were carried out leading to the additional diagnosis of achalasia. After successful interventional and surgical treatment for achalasia, further psychotherapeutic interventions were necessary because of worsening of the BN symptoms. A certain disturbed eating behavior seemed to persist at 3‐year follow‐up, while the medical condition had improved.Conclusion:It needs to be emphasized that careful diagnostic steps are indispensable to distinguish between psychological vomiting and organic vomiting. In case of two separate diseases a suitable treatment regime for each is required. © 2008 by Wiley Periodicals, Inc. Int J Eat Disord 2009
Rhabdomyolysis and drug abuse in a patient with bulimia nervosa
Authors: García‐Gómez María del Castañar , González Javier Ordóñez , del Barrio Andrés Gómez , García Natalia Arrechea 
Published: August 2008

AbstractObjective:Eating disorders, particularly bulimia nervosa, have long been associated with alcohol and illicit drug abuse. Impulsivity has been linked to substance abuse, but there are other explanations for this association. This comorbidity could be very harmful, even deadly, because of the medical consequences of drug abuse.Method:This article reports on the case of a 23‐year‐old woman with bulimia nervosa, severe alcohol and illicit drug abuse, and impulsive behavior who developed rhabdomyolysis. One of the reasons for her drug addiction was the effect of these substances in appetite suppression.Results:The patient successfully recovered after medical and psychological treatment.Conclusion:This article presents the case of a patient with bulimia nervosa and a serious medical complication of illicit drug abuse. It is important to be aware of the increased risk of morbidity and mortality for this patient group. © 2008 by Wiley Periodicals, Inc. Int J Eat Disord 2009
A probabilistic framework for quantification of aftershock ground‐motion hazard in California: Methodology and parametric study
Authors: Yeo Gee Liek , Cornell C. Allin 
Published: August 2008

AbstractThis paper presents a proposed method of aftershock probabilistic seismic hazard analysis (APSHA) similar to conventional ‘mainshock’ PSHA in that it estimates the likelihoods of ground motion intensity (in terms of peak ground accelerations, spectral accelerations or other ground motion intensity measures) due to aftershocks following a mainshock occurrence. This proposed methodology differs from the conventional mainshock PSHA in that mainshock occurrence rates remain constant for a conventional (homogeneous Poisson) earthquake occurrence model, whereas aftershock occurrence rates decrease with increased elapsed time from the initial occurrence of the mainshock. In addition, the aftershock ground motion hazard at a site depends on the magnitude and location of the causative mainshock, and the location of aftershocks is limited to an aftershock zone, which is also dependent on the location and magnitude of the initial mainshock. APSHA is useful for post‐earthquake safety evaluation where there is a need to quantify the rates of occurrence of ground motions caused by aftershocks following the initial rupture. This knowledge will permit, for example, more informed decisions to be made for building tagging and entry of damaged buildings for rescue, repair or normal occupancy. Copyright © 2008 John Wiley & Sons, Ltd.
High spatial resolution data acquisition for the geosciences: kite aerial photography
Authors: Smith Mike J. , Chandler Jim , Rose James 
Published: August 2008

AbstractThis paper highlights the requirement for very high resolution (<0·25 m) elevation data for quantitative and qualitative morphometric analyses. Traditional techniques for high resolution data capture (e.g. airborne, heliborne) are prohibitively expensive for small studies and therefore a kite‐based platform was developed, in conjunction with a consumer non‐metric digital camera, for data capture. The combination of kite and digital camera is more generally termed kite aerial photography (KAP). The accuracy of data derived by digital photogrammetry and imagery acquired using a kite based non‐metric camera is assessed by three experiments: one on smooth terrain, one on tor terrain and one on a glaciofluvial esker. Ground control targets were surveyed at all three sites, with the imagery subsequently processed using the Leica Photogrammetry Suite. The results demonstrate that the method can extract a high number of sampling points at high accuracy, provided that there is suitable image texture across the site. However, final judgment concerning the suitability of derived data is dependent upon an understanding of measurement variability and user quantification of acceptable accuracy. Copyright © 2008 John Wiley & Sons, Ltd.
Campanile trevorjacksonisp. nov. (Mollusca: Gastropoda) from the Eocene of Jamaica: at last, a name for the first fossil used in intercontinental biostratigraphic correlation (de la Beche 1827)
Authors: Portell Roger W. , Donovan Stephen K. 
Published: August 2008

AbstractA new species of giant fossil gastropod belonging to the genusCampanile,Campanile trevorjacksonisp. nov., is described from the Lower Eocene Stettin Formation of the Yellow Limestone Group of Jamaica. Over 180 years ago, internal moulds of these giant gastropods were first reported from the Eocene of Jamaica and referred to asCerithium; it is only with the discovery of an external mould of the shell spire that it can now be removed from open nomenclature. The ornate shell ofC. trevorjacksonihas flat‐sided to slightly rounded whorls; straight, impressed sutures; seven beaded, spiral cords per whorl and a nodose subsutural ridge in the more adapertural part of the shell. This sculpture differentiatesC. trevorjacksonifrom other PaleogeneCampanilespecies. In 1827, de la Beche includedC. trevorjacksoni(asCerithium) in a list of over 20 taxa with which he correlated his white limestone formation (including the Yellow Limestone Group of modern use) with the (Eocene)Calcaire grossierof the Paris Basin. These specimens are lost, but re‐examination of de la Beche's list suggests his identifications were mostly reasonable. Copyright © 2008 John Wiley & Sons, Ltd.
Cost and technical efficiency of German hospitals: does ownership matter?
Authors: Herr Annika 
Published: August 2008

AbstractThis paper is the first to investigate both the technical and cost efficiency of more than 1500 German general hospitals. More specifically, it deals with the question how hospital efficiency varies with ownership, patient structure, and other exogenous factors, which are neither inputs to nor outputs of the production process. The empirical results for the years from 2001 to 2003 indicate that private and non‐profit hospitals are on average less cost efficient and less technically efficient than publicly owned hospitals. The hospital rankings based on estimated efficiency scores turn out to be negatively correlated with average length of stay, which is highest in private hospitals. The results are derived by conducting a Stochastic Frontier Analysis assuming both Cobb–Douglas and translog production technologies and using a newly available and multifaceted administrative German data set. Copyright © 2008 John Wiley & Sons, Ltd.
The quantile regression approach to efficiency measurement: insights from Monte Carlo simulations
Authors: Liu Chunping , Laporte Audrey , Ferguson Brian S. 
Published: August 2008

AbstractIn the health economics literature there is an ongoing debate over approaches used to estimate the efficiency of health systems at various levels, from the level of the individual hospital – or nursing home – up to that of the health system as a whole. The two most widely used approaches to evaluating the efficiency with which various units deliver care are non‐parametric data envelopment analysis (DEA) and parametric stochastic frontier analysis (SFA). Productivity researchers tend to have very strong preferences over which methodology to use for efficiency estimation. In this paper, we use Monte Carlo simulation to compare the performance of DEA and SFA in terms of their ability to accurately estimate efficiency. We also evaluate quantile regression as a potential alternative approach. A Cobb–Douglas production function, random error terms and a technical inefficiency term with different distributions are used to calculate the observed output. The results, based on these experiments, suggest that neither DEA nor SFA can be regarded as clearly dominant, and that, depending on the quantile estimated, the quantile regression approach may be a useful addition to the armamentarium of methods for estimating technical efficiency. Copyright © 2008 John Wiley & Sons, Ltd.
Sentinel node biopsy in patients with cutaneous melanoma of the head and neck: Recurrence and survival study
Authors: Gomez‐Rivera Fernando , Santillan Alfredo , McMurphey Andrea Barber , Paraskevopoulos George , Roberts Dianna B. , Prieto Victor G. , Myers Jeffrey N. 
Published: August 2008

AbstractBackground.Controversy remains regarding the benefits of sentinel lymph node (SLN) biopsy for predicting survival in cutaneous melanoma of the head and neck (CMHN).Methods.We analyzed the factors associated with the recurrence and survival of CMHN patients treated in our institution.Results.One hundred thirteen patients underwent SLN biopsy for CMHN in a 12‐year period. SLN identification was successful in 96%, with a median of 3 SLNs per patient. Positive‐SLNs were identified in 21%. With a median follow‐up of 34 months, 28% recurred. Disease‐free survival (DFS) and overall survival (OS) rates were 66% and 78% in patients with SLN‐negative, and 39% and 62% in SLN‐positive disease. In multivariate analysis, greater Breslow‐thickness was associated with decreased DFS rate (HR 2.07, CI 1.04–4.09), and age >60 years (HR 3.53, CI 1.32–9.4) with lower 5‐year OS rate.Conclusion.Primary tumor thickness and age were associated with decreased survival, whereas SLN status showed a trend for prognostic significance in CMHN. © 2008 Wiley Periodicals, Inc. Head Neck, 2008
Survivin and epidermal growth factor receptor expression in surgically treated oropharyngeal squamous cell carcinoma
Authors: Preuss Simon Florian , Weinell Antje , Molitor Markus , Semrau Robert , Stenner Markus , Drebber Uta , Wedemeyer Inga , Hoffmann Thomas K. , Guntinas‐Lichius Orlando , Klussmann Jens Peter 
Published: August 2008

AbstractBackground.The epidermal growth factor receptor (EGFR) and the inhibitor of apoptosis protein survivin play important roles in the regulation of cellular proliferation and survival in squamous cell carcinomas. Their correlation in oropharyngeal squamous cell carcinoma (OSCC) has not been evaluated yet.Methods.In this multicenter study, we analyzed the expression of survivin and EGFR in tissue specimens from 73 selected patients with OSCC using immunohistochemistry.Results.Higher cytoplasmic survivin scores were significantly correlated with high scores of EGFR expression (p = .013). Nuclear survivin expression was associated with a poor overall survival rate with an estimated 3‐year overall survival probability of 17.3% versus 87.4% for non‐nuclear expression of survivin (p <.001). Multivariate analysis revealed that nuclear survivin expression was an independent negative prognostic factor (p = .008).Conclusion.Considering the strong impact of nuclear survivin expression on survival, the survivin expression should be prospectively evaluated to select patients with an increased risk for disease recurrence. © 2008 Wiley Periodicals, Inc. Head Neck, 2008
Definitive radiotherapy in the management of paragangliomas arising in the head and neck: A 35‐year experience
Authors: Hinerman Russell W. , Amdur Robert J. , Morris Christopher G. , Kirwan Jessica , Mendenhall William M. 
Published: August 2008

AbstractBackground.An evaluation of the treatment results for 104 patients with 121 paragangliomas of the temporal bone, carotid body, and/or glomus vagale who were treated with radiation therapy (RT) at the University of Florida between 1968 and 2004.Methods.Eighty‐nine paragangliomas (86%) were treated with conventional megavoltage techniques, 15 (14%) patients with stereotactic fractionated radiation therapy, 6 (6%) patients with stereotactic radiosurgery (SRS), and 11 (11%) patients with intensity‐modulated radiation therapy (IMRT).Results.There were 6 local recurrences. One recurrence was salvaged with additional RT. The actuarial local control and cause‐specific survival rates at 10 years were 94% and 95%. The overall local control rate for all 121 lesions was 95%; the ultimate local control rate was 96%. The incidence of treatment‐related complications was low.Conclusion.Fractionated RT offers a high probability of tumor control with minimal risks for patients with paragangliomas of the temporal bone and neck. © 2008 Wiley Periodicals, Inc. Head Neck, 2008