1,720,976 research outputs found
Characterization of LSCO/Ir and LSCO/Ru structure as diffusion barrier layers for highly integrated memory devices
No full textThe integration of ferroelectric capacitors into memory cells requires the bottom electrode material to be placed directly over a contact plug. LaSrCoO3 (LSCO) thin film was deposited using dc magnetron sputter-deposition as an electrode material and a diffusion barrier layer for Pb(Zr,Ti)O-3 (PZT) thin-film capacitors. The thermal stability and barrier property of LSCO/Ir/poly-Si and LSCO/Ru/poly-Si contact layers for oxygen diffusion were investigated by Auger electron spectroscopy to find a structure suitable for the bottom electrode of integrated ferroelectric capacitors. The LSCO/Ir/poly-Si composite stack showed lower resistivity compared to LSCO/Ru/poly-Si structure and provided good fatigue performance for PZT capacitors. From these results, the LSCO/Ir/Poly-Si is thought to be the available structure for the fabrication of high-density ferroelectric memory. (C) 2003 The Electrochemical Society
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
(A) study of children dying within 24 hours after admission
No full text의학과/석사[한글]
A STUDY OF CHILDREN DYING WITHIN 24 HOURS AFTER ADMISSION(INCLUDING SUDDEN AND
UNEXPECTED DEATH)
Han Ky Hwang
Department of Medical Science, The Graduate School Yonsei University
(Directed by Prof. Duk Jin Yun, M.D.)
Almost every practicing pediatrician has encountered the tragic enigma of
children dying within 24 hours after admission, and especially when it is a sudden
and unexpected death of a previously healthy infant.
This is the clinical report concerning the pediatric deaths within the first 24
hours after admission including sudden and unexpected deaths observed on the
pediatric ward of Severance Hospital, Yonsei University during the past 11 years
from Oct. 1, 1959 to Sept. 30, 1970.
The total number of admitted patients under 15 years of age on the pediatric ward
for the same period was 7,709, of whom 62.3% were male. Among these 238
patients(3.1%) expired within 24 hours after admission.
Data were analyzed by annual incidence, sex, age, case fatality rate by diseases,
cause of death by age group and seasonal incidence. They were compared also with
all admitted patients of the name period.
The following results were obtained:
1. Mortality rate by year; Average death rate was 3.1%, 6.7% in 1959 decreased
progressively to 1.3% in 1970.
2. 65.5% of the total of 238 deaths were less than one year of age.
3. There was no significant difference between both sex.
4. Case fatality rate by disease showed neonatal tetanus as the cause in 23.8%,
birth injury 15.6%, septicemia 8.8%, meningitis 7.8% and prematurity 7.8%
respectively.
5. Cause of death by age group were as follows;
a). In the neonatal period, neonatal tetanus was the most common one(18.6% of
total neonatal deaths) and others were premature(14.6%) and
bronchopneumonia(14.6%).
b). In infancy the most common cause of death was bronchopneumonia(34.4% of total
infancy deaths), and others were meningitis and gastroenteritis(8.6%).
c). In early childhood from one to four years of age, menigitis was(26.8% of
total early childhood age), encephalitis(17.3%) and bronchopneumona(14.6%) in that
order.
[영문]
Almost every practicing pediatrician has encountered the tragic enigma of children dying within 24 hours after admission, and especially when it is a sudden and unexpected death of a previously healthy infant.
This is the clinical report concerning the pediatric deaths within the first 24 hours after admission including sudden and unexpected deaths observed on the pediatric ward of Severance Hospital, Yonsei University during the past 11 years from Oct. 1, 1959 to Sept. 30, 1970.
The total number of admitted patients under 15 years of age on the pediatric ward for the same period was 7,709, of whom 62.3% were male. Among these 238 patients(3.1%) expired within 24 hours after admission.
Data were analyzed by annual incidence, sex, age, case fatality rate by diseases, cause of death by age group and seasonal incidence. They were compared also with all admitted patients of the name period.
The following results were obtained:
1. Mortality rate by year; Average death rate was 3.1%, 6.7% in 1959 decreased progressively to 1.3% in 1970.
2. 65.5% of the total of 238 deaths were less than one year of age.
3. There was no significant difference between both sex.
4. Case fatality rate by disease showed neonatal tetanus as the cause in 23.8%, birth injury 15.6%, septicemia 8.8%, meningitis 7.8% and prematurity 7.8% respectively.
5. Cause of death by age group were as follows;
a). In the neonatal period, neonatal tetanus was the most common one(18.6% of total neonatal deaths) and others were premature(14.6%) and bronchopneumonia(14.6%).
b). In infancy the most common cause of death was bronchopneumonia(34.4% of total infancy deaths), and others were meningitis and gastroenteritis(8.6%).
c). In early childhood from one to four years of age, menigitis was(26.8% of total early childhood age), encephalitis(17.3%) and bronchopneumona(14.6%) in that order.restrictio
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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