178,443 research outputs found
Single molecule diffusion studies in nanoporous systems: From fundamental concepts to material science and nano-medicine
No full textKlippel-Feil Sendromu ve Otolojik Bulgular
Get PDFKlippel-Feil sendromu ilk kez 1912 yılında birbirinden bağımsız olarak Maurice Klippel ve Andre Feil tarafından tanımlanmıştır. Kısa geniş boyun, inferior yerleşimli ense sa ccedil; ccedil;izgisi, azalmış boyun hareketleri ana bulgularıdır. İnsidansı40000-50000 doğumda 1 rsquo;dir. Orta ve i ccedil; kulak anomalileri rapor edilmiştir. Buna sekonder sens ouml;rin ouml;ral, iletim tipi ve nadiren de mikst tip işitme kayıpları g ouml;r uuml;lebilmektedir. Bu ccedil;alışmada Klippel-Feil sendromu tanısı koyduğumuz otolojik patolojileri saptanan iki vaka sunuldu
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Predicting a prolonged air leak after video assisted thoracic surgery, is it really possible?
No full textValidation of predictive risk models for prolonged air leak (PAL) is essential to
understand if they can help to reduce its incidence and complications. This
study aimed to evaluate both the clinical and statistical performances of 4
existing models. We selected 4 predictive PAL risk models based on their
scientific relevance. We referred to these models as Chicago, Bordeaux,
Leeds and Pittsburgh model, respectively, according to the affiliation place
of the first author. These predicting risk models were retrospectively applied
to patients recorded on the second edition of the Italian Video-Assisted
Thoracoscopic Surgery Group registry. Predictions for each patient were
calculated based on the logistic regression coefficient values provided in the
original manuscripts. All models were tested for their overall performance,
discrimination, and calibration. We recalibrated the original models with the
re-estimation of the model intercept and slope. We used curve decision
analysis to describe and compare the clinical effects of the studied risk mod
els.
Better statistical metrics characterize the models developed on larger
populations (Chicago and Bordeaux models). However, no model has a valid
benefit for threshold probability greater than 0.30. The Net benefit of the
most performing model (Bordeaux model) at the threshold probability of
0.11 is 23 of 1000 patients, burdened by 333 false positive cases. One of
1000 is the Net benefit at the threshold probability of 0.3. The use of PAL
scores based on preoperative predictive factors cannot be currently used in
a clinical setting because of a high false positive rate and low positive pre
dictive valu
Síndrome de Klippel-Feil: Reporte de un caso
No full textMaurice Klippel y André Feil describieron por primera vez en 1912 este padecimiento.El síndrome de Klippel Feil es una enfermedad autosómica dominante con penetranciareducida y expresión variable, su incidencia se desconoce debido a su rarezay a que la mayoría de los pacientes son asintomáticos. Se caracteriza por la fusióncongénita de dos o más vértebras cervicales, implantación baja del cabello, cuellocorto y movilidad limitada. Es común que este síndrome se asocie con la presenciade alteraciones sistémicas y esqueléticas. El objetivo de este trabajo es presentar laimagen radiológica de una paciente con este raro síndrome de Klippel-Feil
A cross-sectional aeroelastic analysis and structural optimization tool for slender composite structures
Get PDFA fully open-source available framework for the parametric cross-sectional analysis and design optimization of slender composite structures, such as helicopter or wind turbine blades, is presented. The framework—Structural Optimization and Aeroelastic Analysis (SONATA)—incorporates two structural solvers, the commercial tool VABS, and the novel open-source code ANBA4. SONATA also parameterizes the design inputs, postprocesses and visualizes the results, and generates the structural inputs to a variety of aeroelastic analysis tools. It is linked to the optimization library OpenMDAO. This work presents the methodology and explains the fundamental approaches of SONATA. Structural characteristics were successfully verified for both VABS and ANBA4 using box beam examples from literature, thereby verifying the parametric approach to generating the topology and mesh in a cross section as well as the solver integration. The framework was furthermore exercised by analyzing and evaluating a fully resolved highly flexible wind turbine blade. Computed structural characteristics correlated between VABS and ANBA4, including off-diagonal terms. Stresses, strains, and deformations were recovered from loads derived through coupling with aeroelastic analysis. The framework, therefore, proves effective in accurately analyzing and optimizing slender composite structures on a high-fidelity level that is close to a three-dimensional finite element model
Genomic imprinting in ruminants: allele-specific gene expression in parthenogenetic sheep
No full text"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
Get PDFBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Letter from R. R. Zellick, Assistant Trust Officer, Anglo California National Bank of San Francisco, to Joseph R. Goodman, October 2, 1942
No full textLetter from R. R. Zellick, Assistant Trust Officer at The Anglo California National Bank of San Francisco, to Joseph R. Goodman, regarding property owned by Dave Tatsuno. Zellick mentions a dispute between current tenants and Tatsuno, and that Tatsuno has asked Goodman to help locate trustworthy tenants.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
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