1,528 research outputs found
Comparison of several author indices for gauging academic productivity
No full textBackground
Many author indices exist to gauge academic productivity. Several of these indices are calculated based upon an author's scholarly publication record, but the measurement methodology to calculate each index varies considerably, and the precise function being used, as well as the end result, is often complex and difficult to assess.
Method
Two straightforward methods to weigh author productivity from the publication and citation record were evaluated as possible means for providing a clearer assessment of scholarly activity. The author characteristic index (termed c-index) assigns author rank for each publication based upon author position. The characteristic prime (c') -index normalizes author rank from author position, so that the total weight per publication is unity. The top 10 scholars with keyword 'celiac disease' in the Google Scholar database were then assessed using these metrics. Rankings according to total number of publications, h-index, and c- and c'-indices were compared, then tabulated along with total papers included for assessment, and mean values per paper for author position, number of authors, citations, and year of publication.
Results
The order of the top ten authors with keyword 'celiac disease' varied substantially depending upon whether the h-index, c-index, or c'-index was used as a gauge. The characteristic indices assign credit to authors according to their position in an author list. The affiliated metrics provided a more complete picture of scholarly activity.
Conclusions
Academic achievement by scholars, based upon quantitative publication characteristics, has recently become of interest for evaluating job candidates, for determining work performance, and for bestowing awards and honors. The characteristic indices as described herein are readily calculated and interpreted, and may improve the assessment of scholarly activity
Long-term outcomes following H-type tracheoesophageal fistula repair in infants
No full textPURPOSE:
To evaluate outcomes following repair of H-type tracheoesophageal fistula (TEF).
METHODS:
Retrospective chart review of infants with H-type TEF treated at our institution between 2000 and 2014. Patient demographics, surgical management, and postoperative function were evaluated.
RESULTS:
Of the 268 patients with esophageal atresia/TEF treated at our center, 16 (6%) had an H-type TEF (10 males). Thirteen (81%) had associated anomalies. All patients were symptomatic: choking and sputtering were the most common presentation (n = 10, 63%). Diagnosis Age at diagnosis was 8 days (1 day-34 months). All patients were diagnosed based on a single esophagogram. Prior to surgery, 12 (75%) patients underwent bronchoscopy and 11 underwent cannulation of the TEF tract. Surgery All patients underwent open repair. One was started thoracoscopically but converted to open due to esophageal sero-muscular injury. Repair was achieved in all patients via a transcervical approach (right-sided incision in 15). One patient had an unsuccessful prior attempt at repair using tissue glue. Following TEF division, 11 patients had tissue interposition grafts placed (9 muscle, 2 fat). Postoperative course Eight (50%) patients had postoperative vocal cord paresis (6 right-sided, 2 bilateral). A patient developed recurrent TEF 78 days postoperatively that was subsequently repaired. Follow-up At 41 months (8-143), there were no mortalities, all patients with vocal cord paresis were asymptomatic despite the fact that only 3 of 8 (38%) regained function, and nine (56%) patients had gastro-esophageal reflux requiring treatment.
CONCLUSIONS:
This large, single-center series demonstrates that H-type TEF can be diagnosed with esophagogram at an early age. Postoperative recurrent laryngeal nerve paresis and gastro-esophageal reflux disease are common following repair. Although most patients with vocal cord paresis eventually become asymptomatic, two-thirds do not regain vocal cord function. This reinforces the importance of routine examination of vocal cord movement following H-type TEF repai
Organic Scintillator-Fibre Sensors for Proton Therapy Dosimetry: SCSF-3HF and EJ-260
No full textIn proton therapy, the dose from secondary neutrons to the patient can contribute to side effects and the creation of secondary cancer. A simple and fast detection system to distinguish between dose from protons and neutrons both in pretreatment verification as well as potentially in vivo monitoring is needed to minimize dose from secondary neutrons. Two 3 mm long, 1 mm diameter organic scintillators were tested for candidacy to be used in a proton–neutron discrimination detector. The SCSF-3HF (1500) scintillating fibre (Kuraray Co. Chiyoda-ku, Tokyo, Japan) and EJ-260 plastic scintillator (Eljen Technology, Sweetwater, TX, USA) were irradiated at the TRIUMF Neutron Facility and the Proton Therapy Research Centre. In the proton beam, we compared the raw Bragg peak and spread-out Bragg peak response to the industry standard Markus chamber detector. Both scintillator sensors exhibited quenching at high LET in the Bragg peak, presenting a peak-to-entrance ratio of 2.59 for the EJ-260 and 2.63 for the SCSF-3HF fibre, compared to 3.70 for the Markus chamber. The SCSF-3HF sensor demonstrated 1.3 times the sensitivity to protons and 3 times the sensitivity to neutrons as compared to the EJ-260 sensor. Combined with our equations relating neutron and proton contributions to dose during proton irradiations, and the application of Birks’ quenching correction, these fibres provide valid candidates for inexpensive and replicable proton-neutron discrimination detectors
U.S. Federal panel on agency, inter-agency, and international EJ initiatives
No full textPresented at the Environmental justice in the Anthropocene symposium held on April 24-25, 2017 at the Lory Student Center, Colorado State University, Fort Collins Colorado. This symposium aims to bring together academics (faculty and graduate students), independent researchers, community and movement activists, and regulatory and policy practitioners from across disciplines, research areas, perspectives, and different countries. Our overarching goal is to build on several decades of EJ research and practice to address the seemingly intractable environmental and ecological problems of this unfolding era. How can we explore EJ amongst humans and between nature and humans, within and across generations, in an age when humans dominate the landscape? How can we better understand collective human dominance without obscuring continuing power differentials and inequities within and between human societies? What institutional and governance innovations can we adopt to address existing challenges and to promote just transitions and futures?Includes bibliographical references.Chair: Margaret HerzogA brief overview of Federal-wide Environmental Justice Policy and BIA Tribal focu
Course grades and standardized tests as predictors of successful completion of the associate degree nursing program at Lakeshore Technical College
No full textPlan BDue to the increasingly severe shortage of registered nurses, Lakeshore Technical College (LTC) is now more aware of, and more determined to deal with the issues of student recruitment and retention. Successful completion of the Associate Degree Nursing Program (A.D.N.) at Lakeshore Technical College depends on many factors, both intrinsic and extrinsic to the program. Variables that affect the learner such as family concerns, health, or program related issues might lead to problems in school related areas such as retention. Student records of 174 LTC associate degree nursing students, enrolling in the program in and after January of 1997, who graduated, failed, or withdrew from the program by May 2000, will be analyzed. Grades received in specific required general education courses, pre-nursing required science courses, and scores received on the American College Test (ACT) or Assessment of Student Skills for Entry Test (ASSET) will be studied. This data will be examined to determine if a pattern exists between grades, standardized testing scores, and retention in the LTC associate degree-nursing (A.D.N.) program. Analysis of the data obtained in this research may identify factors that could alert faculty members to academic problems and potential failure of the student. It would also allow for early intervention to aid the student through the use of guidance, faculty or peer assistance, and promote successful completion of the program
Estudios de cronología relativa: el tercer alargamiento compensatorio y la monoptongación de /ej/, /ow/
No full textInternational audienceThis paper deals with the problematic quality of the secondary long-mid vowels as a result of the third compensatory lengthening in Bartonks Doris media and Cyrenaean. The author first examines the data of these dialects in order to stablish the relative chronology between this process and the monophthongization of /ej/, /ow/; secondly, he proposes a new tripartite classification of the greek dialects as far as these two variables are concerned
Evolving Visions of Environmental Justice: An EJ Pioneer\u27s Reflection on EO 12,898 After 20 Years
No full textKeynote address on environmental justice movement and the Environmental Protection Agency\u27s efforts and activities towards environmental justice.
Charles Lee is the Deputy Associate Assistant Administrator for Environmental Justice at the U.S. Environmental Protection Agency (EPA). He is one of the first leaders of the national environmental justice movement, the author of Toxic Wastes and Race in the United States, and one of the authors of EJ 2014
Estudios de cronología relativa: el tercer alargamiento compensatorio y la monoptongación de /ej/, /ow/
No full textInternational audienceThis paper deals with the problematic quality of the secondary long-mid vowels as a result of the third compensatory lengthening in Bartonks Doris media and Cyrenaean. The author first examines the data of these dialects in order to stablish the relative chronology between this process and the monophthongization of /ej/, /ow/; secondly, he proposes a new tripartite classification of the greek dialects as far as these two variables are concerned
Estudios de cronología relativa: el tercer alargamiento compensatorio y la monoptongación de /ej/, /ow/
No full textInternational audienceThis paper deals with the problematic quality of the secondary long-mid vowels as a result of the third compensatory lengthening in Bartonks Doris media and Cyrenaean. The author first examines the data of these dialects in order to stablish the relative chronology between this process and the monophthongization of /ej/, /ow/; secondly, he proposes a new tripartite classification of the greek dialects as far as these two variables are concerned
Estudios de cronología relativa: el tercer alargamiento compensatorio y la monoptongación de /ej/, /ow/
No full textInternational audienceThis paper deals with the problematic quality of the secondary long-mid vowels as a result of the third compensatory lengthening in Bartonks Doris media and Cyrenaean. The author first examines the data of these dialects in order to stablish the relative chronology between this process and the monophthongization of /ej/, /ow/; secondly, he proposes a new tripartite classification of the greek dialects as far as these two variables are concerned
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