bluuebunny/crossref_metadata_2025_split huggingface dataset:
Complexité économique et croissance
Authors: Poncet Sandra , de Waldemar Felipe Starosta 
Published: May 2013

Dans cet article, nous étudions l’effet de la complexité économique sur la croissance du revenu par tête des villes chinoises. Nous construisons une mesure de la complexité économique pour chaque ville en suivant la méthode des réflexions d’Hidalgo et Hausmann [2009]. Notre indicateur reflète la diversité et l’ubiquité de connaissances présentes dans la localité. Nos estimateurs portent sur un panel de 221 villes entre 1997 et 2009 et indiquent que plus une ville dispose d’une structure productive complexe, plus la croissance à venir de son pib par habitant est élevée.
Migration permanente, vente de terre et gestion informelle des risques de subsistance
Authors: Promsopha Gwendoline 
Published: May 2013

Cet article traite de la vente des terres agricoles au sein d’une population de migrants permanents de l’exode rural en Thaïlande. L’impact de la transition structurelle sur les marchés fonciers d’achat/vente en milieu rural a en effet été peu étudié dans la littérature. À partir de données collectées dans la région de Bangkok, l’article teste alors l’impact potentiel de la fonction « filet de sécurité sociale » de la terre sur la décision des migrants de vendre ou, au contraire, de garder leurs terres. Les résultats indiquent que les ménages migrants les plus vulnérables vendent moins fréquemment leurs terres, afin de conserver une opportunité de retour et de bénéficier de la fonction « filet de sécurité sociale » offerte par la propriété foncière. Les résultats suggèrent ainsi des liens étroits entre la protection sociale des migrants et les réformes foncières dans des contextes de transition avec une forte émigration.
Trappes résultant d'externalités négatives dues à la répartition territoriale inégale des activités innovatrices
Authors: Ricci Francesco 
Published: May 2013

The leader-follower model of Barro and Sala-i-Martin [1997] is modified by assuming that as the technological distance increases the productivity of R&D (i) in the follower region first increases then falls, and (ii) it falls in the leader region for extreme distance. The model predicts the possible emergence of two stable steady state equilibria. The economy can potentially get stuck in an equilibrium characterized by higher inter-regional inequality and a permanent common long-run growth rate below its potential. Free factors movement exacerbates this problem. Classification JEL : R11, O30, O41, F43
Une estimation des coûts d'efficience des tarifs actuels des services publics de l'eau en France
Authors: Porcher Simon 
Published: May 2013

Un résultat communément accepté dans la littérature sur la régulation des services publics (Coase [1946]) est que l’efficience du marché exige un recours à des tarifs binômes avec, d’une part, un prix marginal égal au coût marginal et, d’autre part, un prix fixe correspondant à la part de coûts fixes prise en charge par chaque abonné. En France, les usagers des services d’eau payent un prix marginal qui est en moyenne 8 % plus élevé que le coût marginal. Selon nos estimations de l’élasticité-prix, qui sont similaires à celles obtenues dans les précédentes études, les coûts d’efficience représentent une perte de près de 8 millions d’euros en 2008. Même si la distorsion demeure relativement faible, les consommateurs pourraient bénéficier de ces gains d’efficience.
Krachs financiers ou trappe à liquidité
Authors: Pottier Antonin , Giraud Gaël 
Published: May 2013

Cet article examine les politiques monétaires non conventionnelles dans un modèle d’équilibre général à deux périodes. Les agents échangent, par l’intermédiaire de monnaie, des biens et également des actifs financiers collatéralisés. Une politique non conventionnelle d’augmentation de la quantité de monnaie entraîne l’existence de seulement trois scénarios compatibles avec les conditions d’équilibre : 1) l’économie rencontre une trappe à liquidité ; 2) la création monétaire rend possibles les échanges, au prix de l’inflation ; 3) la création monétaire alimente une bulle qui provoque un krach financier. Ce trilemme met en valeur les canaux de transmission des politiques monétaires aux échanges réels. Il donne une fondation rigoureuse à la distinction entre déflation fishérienne par la dette et trappe à liquidité keynésienne.
Debunking Health IT Usability Myths
Authors: Xiao Y. , Chapman L. , Staggers N. 
Published: May 2013

SummaryPoor usability is a threat to patient safety and linked to productivity loss, workflow disruption, user frustration, sub-optimal product use and system de-installations. Although usability is receiving more attention nationally and internationally, myths about usability persist. This editorial debunks five common myths about usability (1) usability only concerns the look and feel of a product and is, therefore, only a minor concern, (2) usability is not measurable, (3) usability stifles innovation, (4) vendors are solely responsible for product usability, and (5) usability methods are not practical for use in healthcare.
Explantation and Rotation of Intracorneal Ring Segments with the Support of Femtosecond Laser: An Asymmetrical Version
Authors: Levinger E , Levinger S , Hirsh A 
Published: May 2013

ABSTRACT

Purpose
To report a 25-year-old man who presented with advance keratoconus in the right eye with uncorrected visual acuity (UCVA) of 0.2 and best spectacle-corrected visual acuity (BSCVA) of 0.33 with +0.50 −9.25 × 45°.

Materials and methods
Clinical examination and corneal topography revealed grade III keratoconus in the right eye. Intracorneal ring segments (INTACS SK; Addition Technology, Des Plaines, IL) were implanted without surgical complications at 400 µm, with the 450 µm segments implanted superiorly and inferiorly using the femtosecond laser (Intralase®, Advanced Medical Optics, Inc, Abbott Park, IL).

Results
For 3 months postoperatively, BSCVA remained at 0.5 with plano −4.50 × 25°. The patient was complaining of foreign body sensation in the upper part of the eye and glare asking the surgeon to remove the two segments. The superior segment was removed and the lower segment was rotated 30° counter clockwise. Three months later, UCVA was 0.67 and remained stable for 24 months of follow-up.

Conclusion
This report shows that implanting the thicker segment inferiorly provides better visual results.

How to cite this article
Levinger E, Levinger S, Hirsh A. Explantation and Rotation of Intracorneal Ring Segments with the Support of Femtosecond Laser: An Asymmetrical Version. Int J Kerat Ect Cor Dis 2013;2(1):40-42.
How to Measure Wear following Total Hip Arthroplasty
Authors: Grillini Laura , Affatato Saverio 
Published: May 2013

Total hip arthroplasty has yielded excellent results in decreasing pain and enhancing function in patients with hip degenerative disease. However, the problems associated with prosthetic failure and the consequent need for revision surgery still represent a major clinical issue. The most common reasons for revision surgery include implant loosening, periprosthetic osteolysis, infection, malalignment, stiffness, implant failure or fracture, and wear. The need for eliminating or reducing wear plays a crucial role in refining prosthesis composition and design. In this regard, it is important to develop new techniques for more accurate and reproducible measurement of wear. This should allow earlier detection of increased wear and thus permit earlier identification of patients who are at risk, and also help to identify faulty implant designs. This work is aimed at discussing the most common in vivo and in vitro methods used for evaluating the wear of hip prosthesis components.
ADAMTS13 activity and genetic mutations in Japan
Authors: Kokame K. , Matsumoto M. , Fujimura Y. , Miyata T. 
Published: May 2013

SummaryThrombotic thrombocytopenic purpura (TTP), a life threatening disease, can be induced by congenital or acquired deficiency of plasma metalloprotease ADAMTS13. Since the publication of the first genetic analysis in patients with congenital ADAMTS13 deficiency in 2001, more than 100 genetic defects in the ADAMTS13 gene have been reported worldwide. Genetic analysis in patients with ADAMTS13 deficiency has greatly contributed to the understanding of the etiology of TTP. A rapid and quantitative assay method for the plasma ADAMTS13 activity was developed recently in 2005 and opened a new area of TTP research – namely genetic research using a general population to evaluate age and gender differences of ADAMTS13 activity as well as phenotype – genotype correlations of genetic polymorphisms and estimation of a homozygote or a compound heterozygote ADAMTS13 deficiencies. The Japanese general population study included 3616 individuals with an age between 30 – 80 years confirming other studies that while ADAMTS13 activity decreased with age, VWF antigen increased and VWF antigen levels are lowest in blood group O indviduals, whereas ADAMTS13 activity levels were not associated with the AB0 blood group. 25 polymorphisms with a minor allele frequency of more than 0.01 were found, among them 6 missense mutations and 19 synonymous mutations, except P475S missense polymorphisms that was only idenitified in an East Asian population, characterized by reduced ADAMTS13 activity. Prevalence of congenital ADAMTS13 deficiency in the Japanese population was estimated about one individual in 1.1 × 106 to be homozygote or compound heterozygote for ADAMTS13 deficiency. So far more than 40 mutations in Japanese congenital TTP patients were found, but R193W, Q449*, C754Afs*24 (c.2259delA) and C908Y were identified in more than four patients suggesting the precipitaion of these mutations in the Japanese population.
Health Coaching and Genomics—-Potential Avenues to Elicit Behavior Change in those at Risk for Chronic Disease: Protocol for Personalized Medicine Effectiveness Study in Air Force Primary Care
Authors: Vorderstrasse Allison A. , Ginsburg Geoffrey S. , Kraus William E. , Maldonado Maj Carlos J. , Wolever Ruth Q. 
Published: May 2013

Background: Type 2 diabetes (T2D) and coronary heart disease (CHD) are prevalent chronic diseases from which military personnel are not exempt. While many genetic markers for these diseases have been identified, the clinical utility of genetic risk testing for multifactorial diseases such as these has not been established. The need for a behavioral intervention such as health coaching following a risk counseling intervention for T2D or CHD also has not been explored. Here we present the rationale, design, and protocol for evaluating the clinical utility of genetic risk testing and health coaching for active duty US Air Force (AF), retirees, and beneficiaries. Primary Study Objectives: Determine the direct and interactive effects of health coaching and providing genetic risk information when added to standard risk counseling for CHD and T2D on health behaviors and clinical risk markers. Design: Four-group (2 X 2 factorial) randomized controlled trial. Setting: Two AF primary care clinical settings on the west coast of the United States. Participants: Adult AF primary care patients. Intervention: All participants will have a risk counseling visit with a clinic provider to discuss personal risk factors for T2D and CHD. Half of the participants (two groups) will also learn of their genetic risk testing results for T2D and CHD in this risk counseling session. Participants randomized to the two groups receiving health coaching will then receive telephonic health coaching over 6 months. Main Outcome Measures: Behavioral measures (self-reported dietary intake, physical activity, smoking cessation, medication adherence); clinical outcomes (AF composite fitness scores, weight, waist circumference, blood pressure, fasting glucose, lipids, T2D/CHD risk scores) and psychosocial measures (self-efficacy, worry, perceived risk) will be collected at baseline and 6 weeks, and 3, 6, and 12 months. Conclusion: This study tests novel strategies deployed within existing AF primary care to increase adherence to evidence-based diet, physical activity, smoking cessation, and medication recommendations for CHD and T2D risk reduction through methods of patient engagement and self-management support.
The Impact of Telephonic Health Coaching on Health Outcomes in a High-risk Population
Authors: Lawson Karen L. , Jonk Yvonne , O'connor Heidi , Riise Kirsten Sundgaard , Eisenberg David M. , Kreitzer Mary Jo 
Published: May 2013

Background: Health coaching is a client-centric process to increase motivation and self-efficacy that supports sustainable lifestyle behavior changes and active management of health conditions. This study describes an intervention offered as a benefit to health plan members and examines health and behavioral outcomes of participants. Methods: High-risk health plan enrollees were invited to participate in a telephonic health coaching intervention addressing the whole person and focusing on motivating health behavior changes. Outcomes of self-reported lifestyle behaviors, perceived health, stress levels, quality of life, readiness to make changes, and patient activation levels were reported at baseline and upon program completion. Retrospectively, these data were extracted from administrative and health coaching records of participants during the first 2 full years of the program. Results: Less than 7% of the 114 615 potential candidates self-selected to actively participate in health coaching, those with the highest chronic disease load being the most likely to participate. Of 6940 active participants, 1082 fully completed pre- and post- health inventories, with 570 completing Patient Activation Measure (PAM). The conditions most often represented in the active participants were depression, congestive heart failure, diabetes, hyperlipidemia, hypertension, osteoporosis, asthma, and low back pain. In 6 months or less, 89% of participants met at least one goal. Significant improvements occurred in stress levels, healthy eating, exercise levels, and physical and emotional health, as well as in readiness to make change and PAM scores. Discussion: The types of client-selected goals most often met were physical activity, eating habits, stress management, emotional health, sleep, and pain management, resulting in improved overall quality of life regardless of condition. Positive shifts in activation levels and readiness to change suggest that health coaching is an intervention deserving of future prospective research studies to assess the utilization, efficacy, and potential cost-effectiveness of health coaching programs for a range of populations.
A Novel Decision Tree Approach Based on Transcranial Doppler Sonography to Screen for Blunt Cervical Vascular Injuries
Authors: Purvis Dianna , Aldaghlas Tayseer , Trickey Amber W. , Rizzo Anne , Sikdar Siddhartha 
Published: May 2013

ObjectivesEarly detection and treatment of blunt cervical vascular injuries prevent adverse neurologic sequelae. Current screening criteria can miss up to 22% of these injuries. The study objective was to investigate bedside transcranial Doppler sonography for detecting blunt cervical vascular injuries in trauma patients using a novel decision tree approach.MethodsThis prospective pilot study was conducted at a level I trauma center. Patients undergoing computed tomographic angiography for suspected blunt cervical vascular injuries were studied with transcranial Doppler sonography. Extracranial and intracranial vasculatures were examined with a portable power M‐mode transcranial Doppler unit. The middle cerebral artery mean flow velocity, pulsatility index, and their asymmetries were used to quantify flow patterns and develop an injury decision tree screening protocol. Student t tests validated associations between injuries and transcranial Doppler predictive measures.ResultsWe evaluated 27 trauma patients with 13 injuries. Single vertebral artery injuries were most common (38.5%), followed by single internal carotid artery injuries (30%). Compared to patients without injuries, mean flow velocity asymmetry was higher for single internal carotid artery (P = .003) and single vertebral artery (P = .004) injuries. Similarly, pulsatility index asymmetry was higher in single internal carotid artery (P = .015) and single vertebral artery (P = .042) injuries, whereas the lowest pulsatility index was elevated for bilateral vertebral artery injuries (P = .006). The decision tree yielded 92% specificity, 93% sensitivity, and 93% correct classifications.ConclusionsIn this pilot feasibility study, transcranial Doppler measures were significantly associated with the blunt cervical vascular injury status, suggesting that transcranial Doppler sonography might be a viable bedside screening tool for trauma. Patient‐specific hemodynamic information from transcranial Doppler assessment has the potential to alter patient care pathways to improve outcomes.
Renal Duplex Sonographic Evaluation of Type 2 Diabetic Patients
Authors: Mancini Marcello , Masulli Maria , Liuzzi Raffaele , Mainenti Pier Paolo , Ragucci Monica , Maurea Simone , Riccardi Gabriele , Vaccaro Olga 
Published: May 2013

ObjectivesThe purpose of this study was to evaluate the renal volume and intrarenal hemodynamics with duplex sonography in a group of diabetic patients with normal renal function in comparison to nondiabetic controls.MethodsThe renal volume and resistive index (RI) of segmental arteries were assessed by duplex sonography in 88 diabetic patients (44 male and 44 female; median age, 58 years [range, 37–69 years]) and 73 nondiabetic control participants (48 male and 25 female; median age, 53 years [range, 27–75 years]) without renal artery stenosis.ResultsBoth renal volume and RI values in the diabetic patients were significantly higher compared to the controls (mean volume ± SD: diabetic patients, 197.3 ± 47.6 mL; controls, 162.5 ± 35.2 mL; P < .0001; RI: diabetic patients, 0.70 ± 0.05; controls, 0.59 ± 0.06; P < .0001). Renal hypertrophy was present even in diabetic patients without proteinuria (renal volume: patients without proteinuria, 198.3 ± 45.9 mL; controls, 162.5 ± 35.2 mL; P < .005). Patients with higher RI values had significantly greater proteinuria (RI <0.75, 15.9 mg/g [range, 4.2–1718.9 mg/g]; RI >0.75, 37.9 mg/g [range, 11.34–2087.0 mg/g]; P < .02).ConclusionsChanges in renal volume and hemodynamics are detectable on sonography in diabetic patients. Those changes are also present in patients without proteinuria or signs of renal atherosclerosis and with both normal and increased glomerular filtration rates. These results indicate a potential role of duplex sonography in the early identification of morphologic and hemodynamic renal changes in type 2 diabetic patients.
Accuracy of 3‐Dimensional Sonography for Diagnosis and Classification of Congenital Uterine Anomalies
Authors: Moini Ashraf , Mohammadi Sedigheh , Hosseini Reihaneh , Eslami Bita , Ahmadi Firoozeh 
Published: May 2013

ObjectivesCongenital abnormalities of the müllerian ducts are not very common, yet they contribute to the problem of infertility. The purpose of this study was to determine the sensitivity and specificity of 3‐dimensional (3D) sonography for diagnosis of congenital uterine abnormalities.MethodsThis study was performed in 214 women with fertility problems who were suspected to have müllerian anomalies at Arash Hospital from April 2010 to April 2011. All patients underwent 3D sonography to assess for uterine anomalies during the luteal phase of the spontaneous cycle. Sonography was performed by one radiologist, after which one surgeon performed a hysteroscopy and a laparoscopy in each of the patients while under general anesthesia. The 3D sonographic results were not available to the surgeon. Finally, the results were compared to determine the sensitivity, specificity, and accuracy of 3D sonography.ResultsFinal evaluations of 204 patients showed uterine anomalies in 84.3% of the patients. For diagnosis of uterine anomalies, the sensitivity of 3D sonography was 86.6%, and specificity was 96.9%. The positive predictive value was 99.3%, and the negative predictive value was 54.4%, with an 88.2% accuracy rate. For classification, the positive predictive value of 3D sonography was 82.3%, and accuracy was 76%; without short septa and arcuate uteri, accuracy was 95%.ConclusionsIt seems that 3D sonography has a high level of accuracy for most uterine anomalies. In the case of an arcuate uterus and short septa, more precision and increased experience will improve accuracy.
Two‐Dimensional Sonographic Cine Imaging Improves Confidence in the Initial Evaluation of the Fetal Heart
Authors: Poole Patricia Sims , Chung Romy , Lacoursiere Yvette , Palmieri Carolina Rossi , Hull Andrew , Engelkemier Dawn , Rochelle Michele , Trivedi Neha , Pretorius Dolores H. 
Published: May 2013

ObjectivesInitial screening sonography of the fetal heart with static images is often inadequate, resulting in repeated imaging or failure to detect abnormalities. We hypothesized that the addition of short cine clips would reduce the need for repeated imaging.MethodsTwo‐dimensional (2D) static sonograms and short 2D cine clips of the 4‐chamber view and left and right ventricular outflow tracts were obtained from 342 patients with gestational ages of greater than 16 weeks. A diagnostic radiologist and a perinatologist retrospectively reviewed the static and cine images independently and graded them as normal, abnormal, or suboptimal.ResultsA statistically significant increase in the number of structures called normal was seen when 2D cine clips were added to static imaging for both observers (P < .05); the radiologist called 86.5% normal with combined static and cine images versus 61.9% with static images alone, whereas the perinatologist recorded 68.1% as normal versus 58.8%, respectively. The radiologist called 77.8% of structures normal with cine images only versus 61.9% with static images only (P < .001), whereas the perinatologist called fewer structures normal with cine images alone (38.9%) versus static images alone (58.8%). The use of cine loops alone resulted in no significant increase in the ability to clear the heart as normal. The maternal body mass index was inversely associated with the ability to clear structures when 2D cine images were added to static images (P < .05).ConclusionsThe addition of 2D cine clips to standard 2D static imaging of the fetal heart significantly improves the number of structures cleared as normal. Two‐dimensional cine clips are easily obtained, add little time to a study, and require minimal archival space.