bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quality of integrated care for patients with head and neck cancer: Development and measurement of clinical indicators
Authors: Ouwens Mariëlle M. M. T. J. , Marres Henri A. M. , Hermens Rosella R. P. , Hulscher Marlies M. E. , van den Hoogen Frank J. A. , Grol Richard P. , Wollersheim Hub C. H. 
Published: November 2006

AbstractBackground.To improve the quality of integrated care, we developed indicators for assessing current practice in a large reference center for head and neck oncology.Methods.We defined a set of indicators based on integrated care literature, national evidence‐based guidelines for patients with head and neck cancer, and the opinions of professionals and patients. We tested this set regarding assessement of current practice and clinimetric characteristics.Results.The final set consisted of 8 integrated care indicators and 23 specific indicators for patients with head and neck cancer. Current practice assessment produced high scores for the integrated care indicators, but the specific indicators showed room for improvement. The practice test showed that 9 indicators had good applicability.Conclusions.The indicators, while based on evidence‐based guidelines and the principles of integrated care, should incorporate patients' opinions and include a practice test. Our results show that the quality of integrated care for patients with head and neck cancer could be improved. © 2006 Wiley Periodicals, Inc. Head Neck, 2007
Screening for local and regional cancer recurrence in patients curatively treated for laryngeal cancer: Definition of a high‐risk group and estimation of the lead time
Authors: Ritoe Savitri C. , Verbeek André L. M. , Krabbe Paul F. M. , Kaanders Johannes H. A. M. , van den Hoogen Frank J. A. , Marres Henri A. M. 
Published: November 2006

AbstractBackground.All patients treated for laryngeal cancer are offered the same follow‐up schedule to detect asymptomatic locoregional recurrences. In this study, we evaluated the prognostic profile of patients for cancer recurrence and estimated the lead time.Methods.A cohort study was performed between 1990 and 1995. Cox proportional hazards model was used to analyze the prognostic factors. The effect of altering the follow‐up for asymptomatic recurrence detection was determined after estimating the lead time.Results.The variables cT classification, smoking, and histologic grade proved to be prognostic factors. The risk of locoregional failure was 15% in the low‐risk group versus 29% in the high‐risk group. The estimated lead time was 2 to 4 weeks.Conclusion.Risk profiles for locoregional relapse were defined. Intensifying the follow‐up schedule is not advisable because the lead time is very short. An excessively high number of routine visits would have to be performed to increase the detection rate for asymptomatic recurrences. © 2006 Wiley Periodicals, Inc. Head Neck, 2007
The effect of human resource management practices on the job retention of former welfare clients
Authors: Deckop John R. , Konrad Alison M. , Perlmutter Felice Davidson , Freely Joshua L. 
Published: November 2006

AbstractWhy should an employer hire a former welfare client?What human resource management practices can help employers retain former welfare clients? This study addresses these questions against the backdrop of changes in welfare legislation in the United States that have lessened support to welfare clients and their families and emphasized movement into the workplace. We conducted a large‐scale empirical study of the effectiveness of a wide range of HRM practices and found that higher wages, better financial and health benefits, and development opportunities were positively associated with job retention. Unexpectedly, supervisory training had no relationship to retention, and appraising supervisors on providing a supportive and inclusive work environment showed a negative relationship. We provide suggestions to employers for improving the job retention of former welfare recipients along with directions for additional research. © 2006 Wiley Periodicals, Inc.
Workforce reduction and job‐seeker attraction: Examining job seekers' reactions to firm workforce‐reduction policies
Authors: Kammeyer‐Mueller John , Liao Hui 
Published: November 2006

AbstractEmpirical research and narrative reports from working managers suggest that employee attitudes can be negatively influenced by organizational downsizing, but the potential impact of downsizing on applicants is not well documented. In this study, we investigate the effect of organizational downsizing on job‐seeker attraction to an organization. Respondents were given descriptions of two organizations, coupled with information on workforce reductions in the two organizations. We found that workforce reductions reduced job‐seeker attraction. However, companies that downsized but provided assistance and adequate communication to employees were nearly as attractive to applicants as companies that had not downsized. Managerial implications of these results are provided. © 2006 Wiley Periodicals, Inc.
Organizationally sensible versus legal‐centric approaches to employment decisions
Authors: Roehling Mark V. , Wright Patrick M. 
Published: November 2006

AbstractMany managers and human resource professionals view the law increasingly as an overly restrictive influence on their ability to manage employees effectively. This article is intended to alert HR professionals to the risk that they are unnecessarily contributing to the impact that legal considerations have on the management of employees as a result of “legal‐centric decision making.” We introduce the construct of legal‐ centric decision making, present a model of the primary factors contributing to legal‐centric decision making, provide support for the model from diverse literatures (e.g., behavioral decision making, management, and law), and identify several keys to avoiding legal‐ centric decision making. © 2006 Wiley Periodicals, Inc.
Modelling climate change impacts in the Peace and Athabasca catchment and delta: I—hydrological model application
Authors: Toth Brenda , Pietroniro Alain , Conly F. Malcolm , Kouwen Nicholas 
Published: November 2006

AbstractThe Peace–Athabasca Delta (PAD) is an extensive freshwater delta fed by the confluence of the Peace and Athabasca rivers. The Peace River, with regulation at the W.A.C. Bennett Dam, has a direct influence on the hydrology and eco‐hydrology of the PAD. To investigate the relative roles of climate variability and flow regulation, the Peace and Athabasca watershed and delta were simulated using a distributed hydrologic model, WATFLOOD. The model was forced using historical, station‐observed data as well as climate change scenario temperature and precipitation data. The modelled hydrographs over the 24‐year simulation period were compared with measured values at the 14 streamflow stations with generally good agreement for volume and timing of flow, monthly estimates having a Nash–Sutcliffe (R2) of 0·76 and 0·72 for the Peace and Athabasca Rivers, respectively. However, the total of the monthly runoff estimates were positively biased by 19% and 29%, respectively (Peace River at Peace Point, Dv = 19%, Athabasca River at Ft. McMurray Dv = 29%). A comparison between estimated current and future climate scenarios revealed a significant shift towards an earlier melt season as well as elevated winter flows for both river systems. The uniform application of temperature and precipitation change yields a non‐uniform response. The lower elevations of the Athabasca system show trends towards increased streamflow volumes; however, the higher elevations of the Peace River system may experience increased evaporative flux which will more fully compensate for higher precipitation resulting in only slightly increased streamflow under changed climate. The degree and direction of estimated change in streamflow are heavily dependant on the climate change scenario. Copyright © 2006 Crown in the right of Canada. Published by John Wiley & Sons, Ltd.
Modelling climate change impacts in the Peace and Athabasca catchment and delta: III—integrated model assessment
Authors: Pietroniro Alain , Leconte Robert , Toth Brenda , Peters Daniel L. , Kouwen Nicholas , Conly F. Malcolm , Prowse Terry 
Published: November 2006

AbstractThis study utilized the hydrodynamic model, ONE‐D, coupled to the distributed hydrological model WATFLOOD, to evaluate the potential effects of a shift in climate on the hydrological regimes of three large lakes (Athabasca, Claire, and Mamawi), and two important sources of inflow (the Peace and Athabasca rivers) in the Peace‐Athabasca Delta (PAD). The coupled WATFLOOD/ONE‐D system was forced by current climatology and downscaled climate change scenarios from five selected general circulation models (GCMs).Under the selected climate change scenarios, water levels in Lakes Athabasca, Claire, and Mamawi peaked, on average, 40–50 days earlier than at present. Some GCM scenarios predicted an increase in peak lake levels while others predicted suppressed lake levels. Inter‐annual water level variability was also sensitive to predicted changes in precipitation and temperature, increasing in winter and decreasing in summer.Water level fluctuations in the major input rivers of the PAD were found to be more variable under the climate change simulations. Moreover, spring freshet peaks were estimated to occur earlier (20–30 days) and to be considerably reduced (up to 1·0 m reductions).Although the simulations converged towards the same general results in seasonality shift, flow level amplitude was GCM‐dependent. Simple downscaling methods may well be too coarse to adequately address the important spatial variations that can occur in the long‐term climate signal. It is therefore important to understand the sensitivity of this regime to local climatic influences to produce more reliable, quantitative results. An ensemble of approaches that provide meaningfully downscaled results should be considered to confirm the results presented. Copyright © 2006 Crown in the right of Canada, and John Wiley & Sons, Ltd.
Expression of vascular endothelial growth factor and its receptors in the porcine corpus luteum during the estrous cycle and early pregnancy
Authors: Kaczmarek Monika M. , Kowalczyk Anna E. , Waclawik Agnieszka , Schams Dieter , Ziecik Adam J. 
Published: November 2006

AbstractThe present study was undertaken to determine the expression of vascular endothelial growth factor (VEGF) and its receptors, fms‐like tyrosine kinase (Flt‐1) and fetal liver kinase‐1/kinase insert domain‐containing receptor (Flk‐1/KDR), in the porcine corpus luteum (CL) during the estrous cycle and early pregnancy. Immunohistochemical studies localized proteins of VEGF ligand‐receptor system in the cytoplasm of luteal cells and in some blood vessels. Western blot analysis revealed significantly higher levels of VEGF protein during early and mid‐luteal phase (vs. late luteal phase; P < 0.001 and P < 0.01, respectively). Quantification of VEGF mRNA in the CL showed increased mRNA levels during entire luteal phase (vs. Days 16–17; P < 0.05). Expression of Flt‐1 protein remained high during luteal phase (P < 0.001), but the mRNA levels tended to increase from the early to the late luteal phase. Elevated protein expression of Flk‐1/KDR was found in the mid‐luteal phase (vs. Days 16–17; P < 0.05). However, induction of Flk‐1/KDR mRNA expression occurred earlier, in early luteal phase. The lowest VEGF, Flt‐1 and Flk‐1/KDR mRNA and protein levels were observed in regressed CL (P < 0.001). During pregnancy, VEGF, Flt‐1 and Flk‐1/KDR mRNA and protein expression was comparable to the mid‐luteal phase. In conclusion, the present study has demonstrated dynamic expression of VEGF and its receptors in the porcine CL during the estrous cycle and early pregnancy. These data suggest that the VEGF ligand‐receptor system may play an important role in the development and maintenance of the CL in pigs. Mol. Reprod. Dev. 74: 730–739, 2007. © 2006 Wiley‐Liss, Inc.
Elastic waves at a corrugated interface between two dissimilar fibre‐reinforced elastic half‐spaces
Authors: Sarat Singh Sanasam , Tomar S. K. 
Published: November 2006

AbstractThe reflection and transmission phenomena of elastic waves incident at a corrugated interface between two dissimilar fibre‐reinforced elastic half‐spaces have been analysed. Using Rayleigh method of approximation, the expressions of the reflection and transmission coefficients are obtained in closed form for the plane interface as well as for the first order approximation of the periodic interface ζ = d cos px. All these reflection and transmission coefficients of regular and irregular waves are found to be the functions of angle of incidence and elastic parameters of the media. Moreover, the coefficients of irregularly reflected and transmitted waves are found to be proportional to the amplitude of the corrugated interface and are functions of the frequency of the incident wave. Numerical computations have been performed for a specific model to compute these coefficients and results obtained are shown graphically. The results of Singh and Singh (Sadhana 2004; 29:249–257) and Ben‐Menahem and Singh (Seismic Waves and Sources. Springer: New York) have been derived from our analysis as particular cases. Copyright © 2006 John Wiley & Sons, Ltd.
Interpretation of dilatometer tests in a heavy oil reservoir
Authors: Dano Christophe , Hicher Pierre‐Yves , Rangeard Damien , Marchina Philippe 
Published: November 2006

AbstractThis paper presents a prospective study for identifying selected parameters of the modified Cam‐Clay model representing the behaviour of heavy oil reservoirs. The first part shows that the plastic compressibility, which controls the main recovery mechanism of such reservoirs, can be accurately determined, simultaneously with other parameters, by an inverse analysis of pressure–strain curves. The conditions of the identification procedure mainly involve two tests conducted under different drainage conditions or at different strain rates. The numerical study also establishes the sequence of an original in situ experimental program, in which three dilatometer tests at a relatively great depth (several hundreds of metres) were carried out. The comparison of the experimental data with the numerical computations reveals a significant over‐consolidation ratio which does not allow the plastic compressibility to be determined but supports the findings regarding the geological erosion of the site. Copyright © 2006 John Wiley & Sons, Ltd.
M2mediated contractions of human bladder from organ donors is associated with an increase in urothelial muscarinic receptors
Authors: Braverman Alan S. , Lebed Brett , Linder Mitchell , Ruggieri Michael R. 
Published: November 2006

AbstractAimsPrevious studies have shown increased density of M2receptors in hypertrophied rat bladders that possess an M2contractile phenotype. The aim of the current study is to determine whether human bladders with an M2contractile phenotype also have a greater density of bladder M2receptors.Materials and MethodsHuman bladders were obtained from 24 different organ transplant donors. Darifenacin and methoctramine affinity was determined by the rightward shift of cumulative carbachol concentration contractile response curves for each bladder. Radioligand binding and immunoprecipitation was used to quantify M2and M3subtypes in isolated detrusor muscle and urothelium. In addition, pig bladder muscle and urothelial receptors were quantified for comparison.ResultsIn the human urothelium total, M2and M3muscarinic receptor density is significantly negatively correlated with the affinity of darifenacin for inhibition of contraction of the detrusor muscle. In the detrusor muscle there is no correlation between receptor density and darifenacin affinity for inhibition of contraction. Muscarinic receptor density is greater in the muscle than in the urothelium in human bladders whereas in the pig bladder the density is greater in the urothelium than in the muscle.ConclusionsThe greater density of urothelial muscarinic receptors in human bladders with lower darifenacin affinity, indicative of a greater contribution of M2receptors to the contractile response, points towards a possible role of the urothelium in controlling M2mediated contractile phenotype. In comparison between human and pig bladders, the distribution of muscarinic receptor subtypes in the muscle and urothelium are quite different. Neurourol. Urodynam. © 2006 Wiley‐Liss, Inc.
Approximation algorithm for the group Steiner network problem
Authors: Penn Michal , Rozenfeld Stas 
Published: November 2006

AbstractIn this article we study the group Steiner network problem, which is defined in the following way. Given a graph G = (V,E), a partition of its vertices into K groups and connectivity requirements between the different groups, the aim is to find simultaneously a set of representatives, one for each group, and a minimum cost connected subgraph that satisfies the connectivity requirements between the groups (representatives). This problem is a generalization of the Steiner network problem and the group Steiner tree problem, two known NP‐complete problems. We present an approximation algorithm for a special case of the group Steiner network problem with an approximation ratio of min {2(1 + 2x),2I}, where I is the cardinality of the largest group and x is a parameter that depends on the cost function. © 2006 Wiley Periodicals, Inc. NETWORKS, Vol. 49(2), 160–167 2007
Fabrication and characterization of microdisk resonators with In(Ga)As/GaAs quantum dots
Authors: Rastelli A. , Ulhaq A. , Deneke Ch. , Wang L. , Benyoucef M. , Coric E. , Winter W. , Mendach S. , Horton F. , Cavallo F. , Merdzhanova T. , Kiravittaya S. , Schmidt O. G. 
Published: November 2006

AbstractWe report on the fabrication and characterization of GaAs‐based microdisk resonators containing lowsurface‐density self‐assembled In(Ga)As quantum dots. Microdisks of different sizes are obtained by optical and electron‐beam lithography followed by a two‐step wet chemical etching. The use of wet etching results in smooth disk edges. The optical properties of the quantum dots and microdisks are studied by microphotoluminescence spectroscopy as a function of excitation power. Disks with quality factors larger than 12000 (resolution limited spectral width) are easily obtained with the described approach even with optical lithography. Laser heating of microdisks is also discussed. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Entangled photon pairs from a quantum dot source
Authors: Stevenson R. M. , Young R. J. , Atkinson P. , Cooper K. , Ritchie D. A. , Shields A. J. 
Published: November 2006

AbstractWe present the results of recent experiments designed to manipulate the splitting in quantum dots, to eradicate the which‐path information that prevents entangled photon emission. We demonstrate that dots with splitting within the homogeneous linewidth can be grown directly by carefully controlling the thickness of the dot layer. Polarization dependent correlation measurements on these dots show characteristic features of entanglement, only present for dots with small splitting. Our results indicate that for the first time, we have observed triggered entangled photon pair emission from a quantum dot. The ability to trigger the emission of just one photon pair has advantages over other schemes to generate entangled photons, including scalability of the applications. Finally, we note that the device, once optimized, could be implemented by a simple LED‐like structure. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Pauli blockade transport in the cotunneling regime through a double quantum dot
Authors: Liu H. W. , Fujisawa T. , Hayashi T. , Hirayama Y. 
Published: November 2006

AbstractPauli spin blockade in the cotunneling transport through an effective two‐electron double quantum dot (™10 electrons in each dot) has been presented. In the cotunneling regime where the two‐electron (1,1) and (0,2) states (ordered pairs denote the effective electron numbers in each dot) are far below the Fermi energy of the leads, we can concentrate on the two‐electron tunnelling transitions and detect singlet‐triplet splitting arising from the exchange interaction between the two electron spins with improved resolution. We discuss the cotunneling transport by considering the coherent and incoherent coupling between the dots in connection with the singlet‐triplet splitting. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
CdSe/ZnSe quantum dots coupled to modes of monolithic II‐VI pillar microcavities: tunability and Purcell effect
Authors: Lohmeyer H. , Kruse C. , Sebald K. , Gutowski J. , Hommel D. 
Published: November 2006

AbstractThe emission properties of CdSe/ZnSe quantum dots embedded in high‐Q all‐epitaxial ZnSe‐based pillar microcavities are studied. Temperature variable experiments show a strong enhancement of the detected photoluminescence signal of single quantum dots when tuned in resonance with modes of the cavity. The Purcell effect is reflected in a pronounced enhancement of the spontaneous emission rate of quantum dots coupling to the fundamental modes of the cavities. The dependence of the enhancement on the pillar diameter is discussed in detail. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
1.3–1.6 µm broadband polarization‐independent luminescence by columnar InAs quantum dots on InP(001)
Authors: Kawaguchi Kenichi , Ekawa Mitsuru , Yasuoka Nami , Akiyama Tomoyuki , Ebe Hiroji , Sugawara Mitsuru , Arakawa Yasuhiko 
Published: November 2006

AbstractColumnar InAs quantum dots (QDs) with polarization‐independent luminescence were formed on InP(001) by metalorganic vapor‐phase epitaxy. Self‐assembled small QDs with lateral sizes of around 20 nm were formed by using a low growth temperature of 430 °C. Columnar QDs with heights comparable to their lateral sizes were formed by closely stacking the small QDs with tensile‐strained InGaAsP barriers. Polarized‐independent photoluminescence was obtained for a broadband of 1.3–1.6 µm at room temperature. These QDs promise to provide polarization‐insensitive semiconductor optical amplifiers. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Fock‐Darwin spectrum of a single InAs/GaAs quantum dot
Authors: Babinski A. , Potemski M. , Raymond S. , Lapointe J. , Wasilewski Z. R. 
Published: November 2006

AbstractMagnetospectroscopic study of a highly excited single InAs/GaAs quantum dot is reported. Optical emission from the s‐ and p‐shells is identified and investigated in magnetic fields up to 20T. The zero‐field splitting and the Zeeman orbital splitting of the p‐shell‐related emission lines in magnetic field are observed. The evolution of spectra in magnetic field resembles a classical Fock‐Darwin energy diagram, although effects of the electron‐electron interaction and asymmetry of localizing potential can be clearly observed. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Phonon‐assisted transport through a double quantum dot: magnetic field dependence in a spin blockade regime
Authors: Iñarrea Jesús , Platero Gloria , MacDonald Allan H. 
Published: November 2006

AbstractWe analyze the electronic transport through a double quantum dot in the regime where spin blockade occurs. Experiments of current rectification by Pauli exclusion principle in double quantum dots are discussed. Our model includes a self‐consistent description of inelastic transitions where the energy is exchanged through interactions with acoustic phonons in the environment. It accounts for spontaneous emission of phonons which results in additional features in the current characteristics as observed experimentally due to the opening of new current channels. We show as well how a magnetic field applied parallel to the current allows excited states to participate in the electronic current and removes spin blockade. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)