1,720,954 research outputs found
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
Variations on the Author
Get PDF“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
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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Сложность диагностики и лечения ребенка с мультисистемным воспалительным синдромом: клиническое наблюдение
No full textThis clinical observation is an example to show the complexity of diagnosing and treating children with SARS-CoV-2-associated multisystem inflammatory syndrome.
A 17-year-old patient who had a mild form of COVID-19 two weeks ago had a fever again and felt severe abdominal pain, and his general condition deteriorated rapidly. Moreover, on the fifth day from the onset of the disease, a child from the district hospital was admitted to the Ivano-Matreninsky Childrens Hospital in critical condition. Due to peritoneal symptoms, a diagnostic laparoscopy was performed to exclude acute surgical diseases which revealed mesadenitis and hydroperitoneum. Subsequently, the patient had a prolonged fever, severe multiple organ failure developed, including myocarditis with damage to the conduction system of the heart and a marked decrease in the left ventricular ejection fraction, bilateral pneumonia, hydroperitoneum and hydrothorax, acute kidney injury, lymphopenia, thrombocytopenia, coagulopathy, increased markers of inflammation. Non-invasive artificial lung ventilation was performed for 3 d. On day 10, an atrial temporary pacing system was installed, removed 11 d after heart rhythm normalization, and the pleural cavity was drained due to spontaneous pneumothorax. There was a gradual positive trend in respiratory status, the state of the cardiovascular system, normalization of laboratory parameters, and a decrease in inflammation markers. The patient was discharged from the hospital in a satisfactory condition on day 39.
This clinical case demonstrates a severe course of childhood inflammatory, multisystem syndrome with multiple organ failure. The peculiarities of the case include the severity of abdominal pain syndrome, requiring laparoscopy, impaired cardiac activity, and requiring a pacemaker for 11 days.На примере данного клинического наблюдения показана сложность диагностики и лечения детей с мультисистемным воспалительным синдромом, ассоциированным с SARS-CoV-2.
У пациента, 17 лет, перенесшего COVID-19 в легкой форме две недели назад, вновь поднялась температура тела, начались сильные боли в животе, общее состояние стало быстро ухудшаться, и на 5-е сутки от начала заболевания ребенок из районного стационара поступил в Городскую Ивано-Матренинскую детскую клиническую больницу в крайне тяжелом состоянии. В связи с наличием перитонеальных симптомов для исключения острых хирургических заболеваний была выполнена диагностическая лапароскопия, при которой обнаружен мезаденит и гидроперитонеум. В последующем у пациента отмечалась длительная лихорадка, развилась тяжелая полиорганная недостаточность, в том числе миокардит с поражением проводящей системы сердца и выраженным снижением фракции выброса левого желудочка, двусторонняя пневмония, гидроперитонеум и гидроторакс, острое почечное повреждение, лимфопения, тромбоцитопения, коагулопатия, повышение маркеров воспаления. В течение 3 сут проводилась неинвазивная искусственная вентиляция легких. На 10-е сутки была установлена предсердная система временной кардиостимуляции, удаленная через 11 дней после нормализации сердечного ритма, проведено дренирование плевральной полости по поводу спонтанного пневмоторакса. Отмечена постепенная положительная динамика по респираторному статусу, состоянию сердечно-сосудистой системы, нормализация лабораторных показателей и снижение маркеров воспаления. Пациент выписан из стационара в удовлетворительном состоянии на 39-е сутки.
Приведенный клинический случай демонстрирует тяжелое течение детского воспалительного мультисистемного синдрома с полиорганной недостаточностью. К особенностям наблюдения следует отнести выраженность абдоминального болевого синдрома, потребовавшего лапароскопии, и нарушение сердечной деятельности, для нормализации которой проводилась прямая кардиостимуляция на протяжении 11 сут
Лечение пациентки с COVID-19 и неблагоприятным преморбидным фоном: клиническое наблюдение
No full textBACKGROUND: In the presence of severe comorbid pathology, children get sick with coronavirus disease 2019 (COVID-19) as severe as adults.
CASE REPORT: This paper describes the treatment of a 17-year-old patient with severe bilateral pneumonia caused by severe acute respiratory syndrome coronavirus 2 that damage a large volume of the lung tissue (69% on the right, 87.1% on the left, and grade IV lung lesions according to computed tomography) with an unfavorable premorbid background (grade IV obesity with a body mass index of 54.5 kg/m2, Down syndrome, moderate mental retardation, and primary hypothyroidism). The child was admitted to the hospital on day 10 of illness in an extremely serious condition. On admission, she received artificial lung ventilation and then high-flow mask ventilation with an oxygen flow of 12 L/min. In addition to respiratory support, she received etiotropic (hydroxychloroquine), anticoagulant (enoxaparin), antibacterial, (ceftriaxone), and antihypertensive treatments. Levothyroxine sodium was administered for hypothyroidism. Permanent monitoring of the acidbase balance, general and biochemical blood tests, and coagulography were performed. Gradual positive dynamics of the respiratory status was observed, and oxygen flow decreased. The case was constantly consulted to a pulmonologist, endocrinologist, and cardiologist, who corrected antihypertensive therapy depending on blood pressure indicators. Oxygen support was given for 13 days. After receiving a double-negative PCR test for COVID-19, the patient was transferred to the pulmonology department, from which she was discharged in satisfactory condition for outpatient observation.
CONCLUSION: Our patient with COVID-19, severe lung damage with a combination of comorbid pathologies, extremely unfavorable prognosis (grade IV obesity, Down syndrome, and hypothyroidism), who received active complex treatment in accordance with modern guidelines, recovered despite late admission to the hospital.Введение. При наличии тяжелой коморбидной патологии дети болеют COVID-19 так же тяжело, как и взрослые.
Описание наблюдения. В работе представлено клиническое наблюдение за лечением 17-летней пациентки с тяжелой двусторонней пневмонией, вызванной SARS-CoV-2, при большом объеме поражения легочной ткани (справа 69 %, слева 87,1 %, IV степень поражения легких по данным компьютерной томографии) с неблагоприятным преморбидным фоном (ожирение IV степени с индексом массы тела 54,5 кг/м2, синдром Дауна, умеренная умственная отсталость; первичный гипотиреоз). Ребенок поступил в стационар на 10-е сутки заболевания в крайне тяжелом состоянии. В течение суток она находилась на искусственной вентиляции легких, затем переведена на высокопоточную масочную вентиляцию с потоком кислорода 12 л/мин. Кроме респираторной поддержки пациентка получала этиотропную (гидроксихлорохин), антикоагулянтную (эноксапарин), антибактериальную (цефтриаксон) гипотензивную терапию. По поводу гипотиреоза получала левотироксин натрия. Осуществлялся постоянный контроль кислотно-щелочного равновесия, общего и биохимического анализа крови, коагулограммы. По респираторному статусу отмечена постепенная положительная динамика, поток кислорода снижался. Постоянно консультировалась пульмонологом, эндокринологом и кардиологом, который проводил коррекцию гипотензивной терапии в зависимости от показателей артериального давления. Кислородная поддержка осуществлялась на протяжении 13 дней. После получения дважды отрицательного результата ПЦР-теста на COVID-19 пациентка переведена в отделение пульмонологии, из которого выписана в удовлетворительном состоянии под амбулаторное наблюдение.
Заключение. Пациентка с COVID-19 и тяжелым поражением легких с наличием крайне неблагоприятного в плане прогноза сочетания коморбидной патологии (ожирение 4-й степени, синдром Дауна, гипотиреоз), получив активное комплексное лечение в соответствии с современными разработками, выздоровела, несмотря на позднее поступление в стационар
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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