bluuebunny/crossref_metadata_2025_split huggingface dataset:
Free Internal Mammary Artery Graft Reimplantation on the Same Vessel in Repeat Coronary Revascularization
Authors: Vivirito Mario , Conocchia Massimo , Patanè Rosario , Micalizzi Ezio 
Published: April 2015

We describe the case of a 62-year-old man who needed a 3-vessel coronary artery bypass reoperation and mitral valve replacement. The patient's existing free left internal mammary artery graft was not functioning because of a critical stenosis in the native vessel just after the distal anastomosis. The free graft itself was in perfect condition, and we decided to reuse it. Because the course of the graft was so tortuous, we concluded that skeletonization would yield the extra length needed for reimplantation. After reimplanting the graft, we performed venous grafting and mitral valve replacement. The patient was well and had no signs of ischemia at 29 months postoperatively.
There have been few reports on recycling internal mammary artery grafts in repeat coronary artery bypass grafting. To our knowledge, ours is the first report of the reimplantation of a free internal mammary artery graft on the same vessel. We describe the procedure and our decision-making process.
Left Atrial Wall Dissection: A Rare Sequela of Native-Valve Endocarditis
Authors: Saad Marwan , Isbitan Ahmad , Roushdy Alaa , Shamoon Fayez 
Published: April 2015

Left atrial wall dissection is a rare condition; most cases are iatrogenic after mitral valve surgery. A few have been reported as sequelae of blunt chest trauma, acute myocardial infarction, and invasive cardiac procedures. On occasion, infective endocarditis causes left atrial wall dissection.
We report a highly unusual case in which a 41-year-old man presented with native mitral valve infective endocarditis that had caused left atrial free-wall dissection. Although our patient died within an hour of presentation, we obtained what we consider to be a definitive diagnosis of a rare sequela, documented by transthoracic and transesophageal echocardiography.
Transcatheter Aortic Valve Implantation Despite Challenging Vascular Access
Authors: Nascimbene Angelo , Azpurua Federico , Livesay James J. , Fish R. David , Krajcer Zvonimir 
Published: April 2015

We describe transcatheter aortic valve implantation in a patient who had severe peripheral artery disease. The patient's vascular condition required additional preliminary peripheral intervention to enable adequate vascular access.
A 78-year-old man with severe aortic stenosis, substantial comorbidities, and severe heart failure symptoms was referred for aortic valve replacement. The patient's 20-mm aortic annulus necessitated the use of a 23-mm Edwards Sapien valve inserted through a 22F sheath, which itself needed a vessel diameter of at least 7 mm for percutaneous delivery. The left common femoral artery was selected for valve delivery. The left iliac artery and infrarenal aorta underwent extensive intervention to achieve an intraluminal diameter larger than 7 mm. After aortic valvuloplasty, valve deployment was successful, and the transaortic gradient decreased from 40 mmHg to less than 5 mmHg. The patient was discharged from the hospital 4 days postoperatively. We conclude that transcatheter aortic valve implantation can be successfully performed in patients with obstructed vascular access, including stenosis of the infrarenal aorta and the subclavian and coronary arteries.
Anthracycline Treatment and Ventricular Remodeling in Left Ventricular Assist Device Patients
Authors: Segura Ana Maria , Radovancevic Rajko , Demirozu Zumrat T. , Frazier O.H. , Buja L. Maximilian 
Published: April 2015

Nonischemic cardiomyopathy can complicate antineoplastic therapy and lead to irreversible heart failure. We evaluated structural changes at the time of left ventricular assist device implantation in heart failure patients who had been exposed to anthracycline, and we correlated those changes with clinical presentation.
We retrospectively studied left ventricular core samples taken at implantation of the HeartMate II left ventricular assist device in 12 heart failure patients (mean age, 46 ± 16 yr) who had histories of anthracycline exposure. We evaluated those samples for hypertrophy, myocytolysis, and fibrosis. Histopathologic findings showed moderate-to-severe myocyte hypertrophy, moderate myocytolysis, and perivascular and interstitial fibrosis with areas of replacement fibrosis. Ultrastructural studies revealed marked decreases in myofibrils, diffuse mitochondrial swelling, and disorganization of the sarcoplasmic reticulum. The interval between anthracycline therapy and heart failure was a mean of 6.8 ± 5.7 years; duration of heart failure symptoms, 38 ± 47 months; and duration of device support, 414 ± 266 days. Four patients are continuing on device support, 3 have undergone transplantation, 3 have undergone device explantation, and 2 have died. The time of heart failure onset and the duration of symptoms did not correlate with the severity and extent of the histopathologic changes.
The histopathologic findings and the clinical course varied in heart failure patients with anthracycline exposure. No correlation was observed between anthracycline therapy and the development or duration of heart failure symptoms, severity of histopathologic changes, or outcomes.
Die Basis der Erzählung. Das historische Detail in der persischen Historiographie des 16. Jahrhunderts
Authors: Trausch Tilmann 
Published: April 2015

Abstract
Since the very beginnings of modern Middle Eastern Studies, chronicles have formed one of its most intensively used genres of sources. This is especially true for the Iranian World, which has left particularly few textual remains. Whereas the respective approaches to pre-modern Persian chronicles changed substantially within the last one and a half centuries of research, the approach to one aspect of these texts has remained comparably stable: the historical detail, the most bitsy information these texts contain, forming the very basis of the normative narrative of the chroniclers’ patron’s rule. While the end of the age of scientism is debated more than ever, the handling of the historical detail has stayed remarkably untouched – it is still presumed true all too often. Subject of this article are the chronicles written at the courts of Herat and Qazvin within the first decades of the 16th century under early Safavid rule. The study deals with the question of how stable these historical details really are, since the texts actually differ considerably in detail with respect to their stylising descriptions of one and the same historical event. In my view, these details are not stable, but, quite the contrary, surrounded by an aura of coincidence, which has to be taken into account when writing the political history of early modern Iran.
Noise or News? Learning about the Content of Test-Based School Achievement Measures
Authors: Javdani Mohsen 
Published: April 2015

Abstract
Test-based measures of school performance are increasingly used to inform both education policy and families’ school choice decisions. There are, however, concerns about the reliability of these measures. This paper assesses the extent to which cross-sectional differences in schools’ average achievement on standardized tests reflect transitory factors, using data from a 1999–2006 panel of public and private schools in British Columbia, Canada. Sampling variation and one-time mean reverting shocks are shown to be significant sources of cross-sectional variation in schools’ mean test scores. The results therefore suggest that public dissemination of information about schools’ average achievement on standardized tests could potentially mislead or confuse parents. These results should also encourage caution in the design of policies that attach monetary or nonmonetary rewards or sanctions to schools on the basis of test-based achievement and suggest a need for more sophisticated measures of school performance.
Critical values of Rankin–Selberg L-functions for GL
n
× GL
n-1 and the symmetric cube L-functions for
GL2
Authors: Raghuram A. 
Published: April 2015

Abstract
In a previous article we had proved an algebraicity result for the central critical value for L-functions for GL
n
× GL
n-1 over ℚ assuming the validity of a nonvanishing hypothesis involving archimedean integrals.
The purpose of this article is to generalize that result for all critical values for L-functions for GL
n
× GL
n-1 over any number field F while using certain period relations proved by Freydoon Shahidi and the author, and some additional inputs as will be explained below. Thanks to some recent work of Binyong Sun, the nonvanishing hypothesis has now been proved. The results of this article are unconditional. Applying this to GL3 × GL2, new unconditional algebraicity results for the special values of symmetric cube L-functions for GL2 over F have been proved. Previously, algebraicity results for the critical values of symmetric cube L-functions for GL2 have been known only in special cases by the works of Garrett–Harris, Kim–Shahidi, Grobner–Raghuram, and Januszewski.
The Haitian language: defying odds and opening possibilities
Authors: Cerat Marie Lily 
Published: April 2015

AbstractBy examining the question of language in Haiti, this article aims at broadening the debate and dialogue among language policymakers and language rights advocates, scholars, researchers and educators about the effects of “linguistic imperialism” (Phillipson 1992) on the development of Haitian Creole and its impact on Haitian children's educational experience. Drawing from theoretical approaches in history (James 1989 [1963]; Fouron 2010; Dubois 2012), linguistics (Calvet 1974; DeGraff 2001; Dejan 2006), language planning and language policy research (Blommaert 2006; Spolksy 2004), and education (Madhere 2010; Plaisir 2010; Shor 1992) has helped shape the scope of this analysis, while also garnering various critical insights from the field of oral literature. In sum, this work reflects an interdisciplinary effort that highlights the impact of linguistic and cultural agents and historical events as it also sheds light on the lived experiences of Haitians within the larger Haitian democratic project begun in 1791 (James 1989; Dupuy 1997; Dubois 2004).
Task Decomposition and Grouping for Customer Collaboration in Product Development
Authors: Zhang Xuefeng , Yang Yu , Bao Beifang 
Published: April 2015

AbstractDecomposing product development project into various tasks and grouping them are important activities in product development. Many scholars devoted their efforts to solving this problem and proposed some useful methods. However, the research work of task decomposition and grouping for customer collaboration in product development is still lacking. Therefore, this study first decomposes product development tasks and analyzes its executability. Then, by using an integrated numerical design structure matrix and adaptive genetic algorithm (AGA) approach, tasks are divided into different groups, tasks in the same group have high correlation degree, and tasks in the different groups have low correlation degree. To illustrate the process of task decomposition and grouping methods proposed in this paper, a mobile phone structural development case is applied. Moreover, standard generic algorithm (SGA) and particle swarm optimization (PSO) are used to compare with AGA to verify the effectiveness of AGA.
Erosion characteristics of Teflon under different operating conditions
Authors: Debnath Uttam Kumar , Chowdhury Mohammad Asaduzzaman , Nuruzzaman Dewan Muhammad , Rahman Md. Mostafizur , Roy Biplov Kumar , Kowser Md. Arefin , Islam Md. Monirul 
Published: April 2015

Abstract
The present study investigated the solid particle erosion characteristics of Teflon under different impingement angles (15–90°), impact velocities (30–50 m/s), erodent sizes (300–600 μm) and stand-off distances (15–25 mm) at ambient temperature. The Teflon showed ductile erosion behavior exhibited a peak erosion rate at a 30° impact angle. The design of experiments approach utilizing Taguchi’s orthogonal arrays was applied to test the specimens on a compressed air jet type erosion test rig. Erosion efficiency (η) values were 0.29–16.7%, which indicates micro-plugging, plastic deformation and micro-cutting action as dominating erosion mechanisms. The experimental results are closer to the theoretical model. An optimal parameter combination was determined, which leads to minimization of erosion rate. Analysis of variance (ANOVA) was performed on the measured data and signal-to-noise (S/N) ratios. A mathematical correlation, consistent with the experimental observations, is proposed as a predictive equation for estimation of erosion rate of tested material. The morphology of erodent surfaces was examined by using scanning electron microscopy (SEM). Possible erosion mechanisms are discussed.
The morphology-pragmatics interface in Modern Greek compounding
Authors: Charitonidis Chariton 
Published: April 2015

AbstractThis study deals with the morphology-pragmatics interface in Modern Greek compounding. The object of investigation are 64 compounds explicitly marked for stance. It is shown that the linking of denotational (semantic and/or categorial) and socioexpressive (pragmatic) heads defines the different classes of compounds in a highly restrictive manner. The threefold negative socio-expressive structure of the verbal derivatives in -(i)áz(o) shows up in the compounds as well. It is concluded that, in both verbal derivation and compounding, the morphology-pragmatics interface recruits specific denotational structures for its expression.
Hyperspectral image unmixing involving spatial information by extending the alternating least-squares algorithm
Authors: Bauer Sebastian , Stefan Johannes , Puente León Fernando 
Published: April 2015

Abstract
Hyperspectral images, in contrast to common RGB images, offer the
possibility to not only determine the pure materials present in
a scene, but also material abundances in mixtures. The calculation of
the material fractions with the so-called linear mixing model is not
unique, an infinite number of solutions exists. Therefore, additional
constraints should be incorporated. Some algorithms involve spatial
constraints explicitly, e. g., they assume that the abundances mostly
do not change considerably from one pixel to another. Recently, we
presented such algorithms. The calculation time with spatial
constraints included, however, is rather long, so it was checked if
there is a faster way to include the spatial information. In this
paper, we extend the well-known alternating least-squares algorithm to
implicitly include the previously used spatial information in
a slightly different way, namely by adding an extra image denoising
step to the calculation. The extended algorithm is called ALSmooth. We
compare the computing time and the results of the ALSmooth and the
previously presented algorithms. For this purpose, laboratory data of
mixtures with known ground truth had been acquired. Both the
previously investigated algorithms and the ALSmooth algorithm are
quite sensitive towards parameter value changes; the ALSmooth
algorithm is even more sensitive. For certain applications with
defined environment and endmembers, however, it can be a faster
alternative.
A design automation approach for task-specific intelligent multi-sensory systems – Lab-on-spoon in food applications
Authors: Thongpull Kittikhun , Groben Dennis , König Andreas 
Published: April 2015

Abstract
In this work, we present a general design automation concept for the
rapid and effort-reduced design of intelligent integrated
multi-sensory self-x systems, as needed for sportive or health
oriented devices, Ambient Assisted Living systems, general Internet of
Things (IoT), or even for Industry 4.0, and demonstrate it for the
case of mobile liquid food analysis by our lab-on-spoon system. In
particular, we apply dimensionality reduction and hierarchical
classification to the rapid creation of powerful yet lean system
solutions. For selected food classification tasks significant
reductions down to 0.58% of the original data size and
increase of classification accuracy up to 100% have been
achieved. The measurement time could be reduced down to 0.4%.
Messtechnische Expositionswertbestimmung zur elektromagnetischen Sicherheit im Automobil
Authors: Wehrmann Christof , Rickers Maximilian , Schilling Meinhard 
Published: April 2015

Zusammenfassung
Als Folge der steigenden Anzahl an Fahrzeugen im
europäischen Raum mit Hybrid- und Elektroantrieb wird der Thematik der
elektromagnetischen Sicherheit zukünftig eine immer bedeutendere Rolle
zukommen. Im Rahmen des EU-Forschungsprojekts ,,EM-Safety“ wurde ein
Messsystem entwickelt, welches Fahrzeuge nach ICNIRP geltenden
Richtlinien überprüft, um somit die Gesundheit der Insassen zu
schützen. Die Aufgaben des Projekts, erste Messungen sowie die dabei
aufgetretenen Signale innerhalb und außerhalb des Fahrzeugs werden
hier in kurzer Form erläutert.
Dynamische Netzwerksimulation eines überlastfesten Drucksensors mit verteilten Parametern
Authors: Tang Linbo , Kober Timo , Werthschützky Roland 
Published: April 2015

Zusammenfassung
Ein ölgefüllter Drucksensor stellt ein
mechanisch-akustisches System dar. Die Beschreibung des dynamischen
Übertragungsverhaltens von mechanischen und akustischen Systemen
erfolgt im Zeitbereich mit Hilfe von partiellen
Differentialgleichungen. Im Frequenzbereich ist das vereinfacht durch
Anwendung der Modellbildung der Netzwerktheorie möglich. Mithilfe der
verteilten Netzwerktheorie können die dynamischen Eigenschaften eines
solchen Drucksensors analysiert werden. Die Modellbildung wird anhand
eines Beispiels eines neuartigen überlastfesten Differenzdrucksensors
beschrieben.
Text und soziale Wirklichkeit
Authors: Lemke Matthias , Stulpe Alexander 
Published: April 2015

Abstract
Text mining methods applied in social sciences research are based on the premise that the analysis of texts leads to valid conclusions about social reality. The paper examines the theoretical and empirical aspects of this premise: first, it shows by recourse to the tradition of hermeneutics and the sociology of knowledge, how the relationship between text and social reality can be determined. Subsequently, it illustrates the heuristic performance of various text mining methods, using the bigram ‚social market economy‘ (ger. ‚Soziale Marktwirtschaft‘) as an example. The conclusion leads to the important analytical finding that only the constant procedural entanglement of Close and Distant Reading, referred to, in accordance with Moretti’s terminology, as Blended Reading, will allow the researcher to produce viable knowledge.
Pediatric Hospitalist Perceptions Regarding Trainees’ Effects on Cost and Quality of Care
Authors: Johnson David P. , Browning Whitney L. , Gay James C. , Williams Derek J. 
Published: April 2015

Objective:
To determine pediatric hospitalists’ perceptions about residents’ effects on cost and quality of care and their own ability to provide and teach cost-effective, high-quality care.

Methods:
A 15-item survey assessing hospitalist perceptions of resident impact on costs/quality and their role in teaching cost-effectiveness was developed and sent to 180 hospitalists from 113 institutions in the United States.

Results:
Of 180 hospitalists surveyed, 127 completed surveys (71%). Overall, 76 (60%) and 91 (72%) hospitalists believed that residents increase quality and cost of care, respectively. Respondents who worked with residents all the time were more likely to state that residents increase quality (50 of 70 [71%]) compared with those who worked with residents sometimes (18 of 42 [43%]) or never (8 of 15 [53%]; P = .01). Similarly, academic hospitalists were more likely than community hospitalists to believe that residents increase quality (67 of 103 [65%] vs 9 of 24 [38%]; P = .03). Although only 28 (22%) respondents reported receiving formal cost-effectiveness training, 116 (91%) believed that they provided cost-effective care, and 103 (81%) believed that they were qualified to teach this topic. Most respondents (n = 115 [91%]) believed that residents should participate in a cost-effectiveness curriculum.

Conclusions:
Most respondents felt trainees increase both the costs and quality of care for hospitalized children. The perception of increased quality was associated with increased resident interaction, whereas cost perceptions were similar across groups. Pediatric hospitalists report a lack of formal cost-effectivesness training, but nearly all respondents supported the incorporation of such training into graduate medical education programs.
Voluntary Implementation of Critical Congenital Heart Disease Screening in Washington Hospitals
Authors: McDermott Traci L. , Vernon Margaret M. , Schultz Amy H. 
Published: April 2015

Objectives:
To determine the extent of voluntary implementation of pulse oximetry screening for critical congenital heart disease (CCHD) in Washington. At the time of the study, there was no state legislative or regulatory mandate for CCHD screening in Washington.

Methods:
A Web-based survey was sent to the nurse manager or nurse educator of the well newborn unit at each of the 64 Washington hospitals with active delivery services in May and June 2013. Telephone follow-up was conducted for incomplete surveys. The survey assessed awareness and implementation of the recommendation, the protocol followed, staffing and equipment issues, pediatric cardiology support services, and the availability of prostaglandin E1 at each birth hospital. A brief follow-up was performed in December 2013 for hospitals not screening at the time of the initial survey.

Results:
As of December 2013, 89% of Washington birth hospitals (accounting for 91.4% of births) had active CCHD screening programs. The recommended protocol is used in 95% of screening hospitals. Screening programs were instituted in 96% of hospitals using existing staff, but 52% of hospitals purchased new durable equipment to institute screening.

Conclusions:
There has been widespread voluntary adoption of pulse oximetry screening for CCHD in Washington birth hospitals. Quality assurance efforts are needed to assess the quality of the screening programs.