scholarly journals Una introducción a los estudios de atribución de autoría en el ámbito disciplinario de la Lingüística Forense y al programa de análisis de textos ALTXA

2021 ◽  
Vol 6 ◽  
pp. 13-21
Author(s):  
Juan Antonio Latorre García
Keyword(s):  
William Shakespeare ◽  
Computational Linguistics ◽  
Authorship Attribution ◽  
General Definition ◽  
Forensic Linguistics ◽  
Palabras Clave ◽  
N Gram ◽  
Para Determinar ◽  
Definition Of ◽  
Intuitive Interface

RESUMEN Este artículo presenta un caso de atribución de autoría en el ámbito de la lingüística forense a partir de la herramienta ALTXA. Primeramente, se aportará una definición general de la lingüística forense y una breve explicación de sus principales áreas de estudio con el propósito de acotar progresivamente el foco de la investigación hasta llegar a los estudios de atribución de autoría, los cuales serán abordados con mayor profundidad. En segundo lugar, el artículo evaluará las principales herramientas computacionales empleadas para determinar de forma cuantitativa la autoría de textos anónimos o disputados y presentará el software ALTXA, el cual ha sido creado por el presente grupo investigador. Dicha herramienta computacional pretende aunar las funcionalidades de distintos programas informáticos en una interfaz accesible que permita la implementación de los estudios de atribución de autoría en contextos educativos y facilite la labor del lingüista forense. El artículo concluirá con una demostración práctica de ALTXA en la que se realizará un estudio de atribución de autoría de un fragmento indubitado de William Shakespeare para demostrar la validez del programa, así como de los estudios de n-grams, una de las funcionalidades que ofrece dicha herramienta y que constituyen un procedimiento metodológico consolidado en el campo de la lingüística forense. PALABRAS CLAVE Lingüística forense, lingüística computacional, atribución de autoría, William Shakespeare, n-grams. ABSTRACT This article will present a case of authorship attribution within the framework of forensic linguistics with the computational tool ALTXA. For such end, a general definition of forensic linguistics and an explanation of its main areas of study will be offered with the aim of narrowing down progressively the scope of the article until authorship attribution studies are presented and discussed in more depth. Afterwards, a review of the main computational tools with which the authorship of disputed or anonymous texts are analysed will be provided, and ALTXA, a software that has been developed by the researcher, will be presented. Such tool combines many of the functionalities offered by other programs in an intuitive interface that allows for the implementation of authorship attribution studies in educational settings and facilitates the labour of the forensic linguist. Lastly, the article will provide a practical demonstration of ALTXA in which the authorship of an undisputed text written by William Shakespeare will be analysed to prove its reliability. Such analysis will consist of an n-gram study, which is one of the functionalities of ALTXA and constitutes a solid methodological procedure within the framework of forensic linguistics. KEYWORDS Forensic linguistics, computational linguistics, authorship attribution, William Shakespeare, n-grams.

scholarly journals A remark on local fractional calculus and ordinary derivatives

2016 ◽  
Vol 14 (1) ◽  
pp. 1122-1124 ◽  
Author(s):  
Ricardo Almeida ◽  
Małgorzata Guzowska ◽  
Tatiana Odzijewicz
Keyword(s):  
Fractional Calculus ◽  
Fractional Derivative ◽  
Short Note ◽  
General Definition ◽  
Local Fractional Derivative ◽  
Fundamental Properties ◽  
Local Fractional Calculus ◽  
Definition Of

AbstractIn this short note we present a new general definition of local fractional derivative, that depends on an unknown kernel. For some appropriate choices of the kernel we obtain some known cases. We establish a relation between this new concept and ordinary differentiation. Using such formula, most of the fundamental properties of the fractional derivative can be derived directly.

scholarly journals AB0677 REVISING THE DEFINITION OF REACTIVE ARTHRITIS AND DIFFERENTIATION FROM UNDIFFERENTIATED SPONDYLOARTHRITIS

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1633.2-1634
Author(s):  
F. Cosan ◽  
O. M. Gedar
Keyword(s):  
Causative Agent ◽  
Reactive Arthritis ◽  
Case Reports ◽  
Experimental Studies ◽  
Classification Criteria ◽  
General Definition ◽  
Parasitic Infections ◽  
Undifferentiated Spondyloarthritis ◽  
Classical Definition ◽  
Definition Of

Background:Reactive arthritis (ReA) is defined by 1999 ACR criteria as arthritis preceding a bacterial genitourinary (GUS) or gastrointestinal (GIS) infection in 3 days-6 weeks and evidence of triggering infection. Recently, ReA is classified as SpA and patients who do not fulfill SpA criteria are classified as undifferentiated spondyloarthritis (USpA) according to ASAS/EULAR SpA classification criteria.Objectives:In several case reports which are associated with other infective agents are reported and the definition is extended for some clinicians so that SpA which is occurred after any infection is called as ReA. On the other hand, some researchers still accept the classical definition of ReA. The problem with the heterogeneity of opinions and unstandardized definition of ReA hinders studies about pathogenesis and standardization of treatments. In this study, we aimed to determine the spectrum of the use of the definition of reactive arthritis in publications in PubMed between 2009-2019.Methods:The ReA keyword is searched in PubMed for the years between 2009-2019. 248 different publications have been identified and included in this research. 89 articles, 47 reviews, 108 case reports, 2 guidelines, and 2 editorials reviewed for the definition of ReA.Results:Only 42.7% (106 patients) of these publications meet the classical definition which suggests ReA after only GIS and GUS infections. In 4 (1.6%) of the publications ReA was defined after GIS, GUS and oropharyngeal infections; in 3 (1,2%) of the publications after any bacterial infection; in 9 (3.6%) of the publications after any infection. In 8 (3.2%) of the publications, ReA and USPA was used correspondingly. In 39 (15,7%) of the publications the term agent related, ReA was used without making a general definition for ReA. 79 publications (31,9%) have not defined ReA.According to causative agent and ReA relationship, in 64 (24,6%) general infective agents, in 75 (30,2%) classical agents, in 22 (8,9%) other bacterial agents, in 23 (9,3%) streptococcus, in 10(4%) intravesical BCG, in 6 (2.4%) HIV, in 6 (2.4%) tuberculosis, in 12 (4,8%) clostrudium difficle, in 2 (0.8%) parasites were reported. In 31 (12,5%) of the publications the causative agent for the ReA was unknown, the diagnosis was made clinically.Conclusion:In this study, it is aimed to draw attention terminology intricacy and the need for the standardization of the definition of ReA and USpA. It is clear that to standardize the definition of Rea and USpA is necessary. Between 2009-2019 there are reported cases diagnosed as ReA associated with bacterial infections (especially with Clostridium difficile, streptococcus and tuberculosis infections), and viral infections (by a majority with HIV), and parasitic infections. It is not clear if we need to define them classically or define them as USPA. Another important consideration is the necessity of extended laboratory investigations to find out the real causative agent even if the patient is clinically diagnosed with ReA. The requirement of the differentiation between ReA and USpA must be revealed for therapeutic researches.References:[1]A proposal for the classification of patients for clinical and experimental studies on reactive arthritis. Pacheco-Tena C, Burgos-Vargas R, Vázquez-Mellado J, Cazarín J, Pérez-Díaz JA. J Rheumatol. 1999 Jun;26(6):1338-46.[2]The Assessment of SpondyloArthritis International Society classification criteria for peripheral spondyloarthritis and for spondyloarthritis in general. Rudwaleit M, van der Heijde D, Landewé R, Akkoc N, Brandt J, Chou CT, Dougados M, Huang F, Gu J, Kirazli Y, et al. Ann Rheum Dis. 2011;70:25–31.Disclosure of Interests:None declared

scholarly journals A lattice-theoretic characterization of pure subgroups of Abelian groups

2021 ◽  
Author(s):  
M. Ferrara ◽  
M. Trombetti
Keyword(s):  
Abelian Group ◽  
Abelian Groups ◽  
Subgroup Lattice ◽  
General Definition ◽  
Short Paper ◽  
Theoretic Characterization ◽  
Definition Of

AbstractLet G be an abelian group. The aim of this short paper is to describe a way to identify pure subgroups H of G by looking only at how the subgroup lattice $$\mathcal {L}(H)$$ L ( H ) embeds in $$\mathcal {L}(G)$$ L ( G ) . It is worth noticing that all results are carried out in a local nilpotent context for a general definition of purity.

scholarly journals Proportional lumpability and proportional bisimilarity

2021 ◽  
Author(s):  
Andrea Marin ◽  
Carla Piazza ◽  
Sabina Rossi
Keyword(s):  
Markov Chain ◽  
Markov Chains ◽  
Upper And Lower Bounds ◽  
General Definition ◽  
Performance Indices ◽  
State Aggregation ◽  
Structural Regularity ◽  
Original Definition ◽  
Aggregation Technique ◽  
Definition Of

AbstractIn this paper, we deal with the lumpability approach to cope with the state space explosion problem inherent to the computation of the stationary performance indices of large stochastic models. The lumpability method is based on a state aggregation technique and applies to Markov chains exhibiting some structural regularity. Moreover, it allows one to efficiently compute the exact values of the stationary performance indices when the model is actually lumpable. The notion of quasi-lumpability is based on the idea that a Markov chain can be altered by relatively small perturbations of the transition rates in such a way that the new resulting Markov chain is lumpable. In this case, only upper and lower bounds on the performance indices can be derived. Here, we introduce a novel notion of quasi-lumpability, named proportional lumpability, which extends the original definition of lumpability but, differently from the general definition of quasi-lumpability, it allows one to derive exact stationary performance indices for the original process. We then introduce the notion of proportional bisimilarity for the terms of the performance process algebra PEPA. Proportional bisimilarity induces a proportional lumpability on the underlying continuous-time Markov chains. Finally, we prove some compositionality results and show the applicability of our theory through examples.

What Is Fatigue?

2002 ◽  
Vol 27 (1) ◽  
pp. 42-55 ◽  
Author(s):  
Brian R. Macintosh ◽  
Dilson E. Rassier
Keyword(s):  
Contractile Response ◽  
Initial Response ◽  
Calcium Sensitivity ◽  
General Definition ◽  
Light Chains ◽  
Posttetanic Potentiation ◽  
Tetanic Contraction ◽  
First Response ◽  
Definition Of ◽  
Regulatory Light Chain Phosphorylation

Fatigue and potentiation are two forms of force modulation. A general definition of fatigue is "a circumstance where less than the anticipated contractile response is obtained." Fatigue is associated with depressed Ca2+ release and possibly decreased Ca2+ sensitivity. Potentiation results from increased Ca2+ sensitivity due to regulatory light chain phosphorylation. Muscle fatigue and potentiation can coexist, making it difficult to quantify these processes. With repetitive 10 Hz stimulation, the developed tension first increases, then decreases. Is fatigue present when developed tension first begins to decrease or when it falls below the developed tension of the first response? Intermittent incompletely fused tetanic contractions for which peak developed tension first decreases, then increases, is another unusual example of fatigue. A third example is when twitch contractions following a tetanic contraction decrease to a level below the pretetanic twitch amplitude, indicating that fatigue may have been coexistent with posttetanic potentiation. These observations illustrate the complexity of detecting fatigue, based on the simple, but commonly accepted definition presented above. Care must be taken in interpreting "before vs. after" contractile responses. Even when the contraction amplitude is greater than the initial response, there is no guarantee that mechanisms associated with fatigue are not present. Key words: calcium sensitivity, staircase, posttetanic potentiation, myosin light chains, skeletal muscle

scholarly journals General Definition of Gravitational Tension

2004 ◽  
Vol 2004 (05) ◽  
pp. 043-043 ◽  
Author(s):  
T Harmark ◽  
N.A Obers
Keyword(s):  
General Definition ◽  
Definition Of

Mean Diameters in Parallel-Flow and Counter-Flow Aerosol Systems

1976 ◽  
Vol 98 (2) ◽  
pp. 297-302 ◽  
Author(s):  
K. G. T. Hollands ◽  
K. C. Goel
Keyword(s):  
Mass Transfer ◽  
Continuous Phase ◽  
General Concept ◽  
Parallel Flow ◽  
General Definition ◽  
Single Pair ◽  
Counter Flow ◽  
Mean Diameter ◽  
The Mean ◽  
Definition Of

The general concept of the mean diameter of the disperse phase of an aerosol system, first introduced by Mugele and Evans in 1951, has proven to be a very useful one. In this concept, the proper mean diameter, xp,q, is characterized by a single pair of indices, p and q, which are dependent on the actual type of aerosol system under consideration. This paper re-examines the validity of this concept of mean diameter in heat and mass transfer aerosol systems. The concept is found to be applicable only under a very narrow range of conditions. Attention is then given to a more general definition of a mean diameter, applicable to aerosol heat or mass exchangers. Analyses of these devices shows that the more general mean diameter is a function of the capacity rate ratio, R, and effectiveness of the heat exchanger, ε. Solutions to the governing equations have permitted the mean diameter to be presented graphically as a function of these variables. These solutions are given for two types of particle size distributions, the Rosin-Rammler and the log-probability, and for both parallel-flow and counter-flow heat exchangers. The solutions are, however, restricted to cases where the resistance to heat or mass transfer lies exclusively in the continuous phase.

Compare and Analyze of the Definition and Development of Distributed Generation in China and Abroad

2014 ◽  
Vol 953-954 ◽  
pp. 925-928 ◽  
Author(s):  
Bi Bin Huang
Keyword(s):  
Climate Change ◽  
Power Generation ◽  
Energy Conservation ◽  
Distributed Generation ◽  
Basic Characteristic ◽  
Large Scale ◽  
General Definition ◽  
Development Status ◽  
Incentive Policy ◽  
Definition Of

As the positive and important supplement to large-scale power generation, distributed generation (DG) will become key measure to promote energy conservation and solve the problems of climate change in China. Due to absence of universal authoritative definition of DG, this paper summarizes the basic characteristic of DG based on the definitions in typical countries (or organizations) and carried out general definition of DG considering our national conditions and power grid features. From the views of resource, incentive policy and industry, this paper analyzed the fundamental for DG development and compared the development status in typical countries.

DISC HERNIA - DIFFERENTIAL DIAGNOSTICS, OPTION OF PSEUDOTUMOROUS FLOW

Vestnik ◽  
2021 ◽  
pp. 97-101
Author(s):  
М.А. Алиев ◽  
М.Ж. Мирзабаев ◽  
В.С. Караваев
Keyword(s):  
Clinical Medicine ◽  
Clinical Symptoms ◽  
Final Diagnosis ◽  
Herniated Disc ◽  
General Definition ◽  
Differential Diagnostics ◽  
Common Disease ◽  
Physical And Mental Health ◽  
Imaging Results ◽  
Definition Of

Грыжа диска (ГД) является распространенным заболеванием и наносит большой вред как физическому, так и психическому здоровью пациентов, страдающих этим заболеванием. Главным этиологическим фактором заболевания служит дегенерация диска. В настоящее время общее определение грыжи межпозвонкового диска в клинической медицине довольно запутанно. В настоящее время общее определение грыжи межпозвонкового диска в клинической медицине довольно запутанно. Окончательный диагноз ГД основывается на совокупности анамнеза, клинических симптомов и результатах визуализации. Herniated disc is a common disease and causes great harm to both the physical and mental health of patients suffering from this disease. The main etiological factor of the disease is disc degeneration. Currently, the general definition of a herniated disc in clinical medicine is quite confusing. Currently, the general definition of a herniated disc in clinical medicine is quite confusing. The final diagnosis of HD is based on a combination of anamnesis, clinical symptoms, and imaging results.

DETERMINACIÓN DEL RIESGO DE MORTALIDAD UTILIZANDO EL SCORE GRACE EN PACIENTES CON SÍNDROME CORONARIO AGUDO, AREQUIPA 2021

SCIENTIARVM ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 39-42
Author(s):  
José M. Rojas Durand ◽  
◽  
Gladys E. Nuñez Zevallos ◽  
Mercedes H. Nuñez Zevallos ◽  
◽  
...  
Keyword(s):  
Palabras Clave ◽  
Las Mujeres ◽  
Para Determinar

La presente investigación tiene como objetivo determinar el riesgo de mortalidad de pacientes de la población arequipeña que acudió Hospital Nacional Carlos Alberto Seguin Escobedo (HNCASE) usando el score GRACE y hallar la relación del sexo con el resultado de obtener un riesgo alto del score. El estudio fue diseñado con carácter descriptivo correlacional y transversal, para la recolección de datos se acudió a los departamentos de estadística y cardiología del HNCASE, se elaboró una base de datos en el programa Excel 2019, utilizando como herramienta el score GRACE, un score validado al nivel internacional, se calculó el riesgo de muerte de los pacientes con SCA. Con el mismo programa, se elaboraron tablas de frecuencias y promedios para elaborar el informe y, para relacionar el riesgo alto del score GRACE con el sexo de los pacientes, se usó la prueba estadística del Chi Cuadrado. No se consideró a la angina estable ni a la de Prinzmetal en este estudio. Se registraron 234 casos de SCA entre Infartos y Angina Inestable. Varones 76.5%, Mujeres 23.5%. La edad media de mujeres fue de 73 y de varones 67. Los casos más presentados fueron de Infarto agudo de miocardio sin elevación del segmento ST (IAMNSTE) 154 (67%) seguido de Angina inestable 44 casos (18%) e Infarto agudo de miocardio con elevación del segmento ST (IAMSTE) 36 casos (15%). La mayoría de casos tuvieron un score GRACE con riesgo Alto (59% en todos los casos de SCA y 66% en los casos de Infarto Agudo de Miocardio) No hubo diferencia en el número de atenciones realizadas de casos de SCA antes de la pandemia por SARSCOV2 vs. durante la pandemia. Los fallecidos fueron 22 (9.4%). En este estudio se encontró una relación significativa entre el sexo y la probabilidad de obtener un score GRACE con riesgo ALTO de mortalidad, estando en la población arequipeña las mujeres más propensas a obtener un puntaje ALTO a diferencia de los varones. Se concluye que muchos de los resultados obtenidos se parecen a los que se encontraron en estudios hechos en España y Cuba. Se recomienda utilizar un score validado al nivel internacional para determinar el riesgo de mortalidad y así dar un tratamiento ideal, pero no se debe dejar de lado el criterio médico. Palabras clave: Síndrome coronario agudo, Población Arequipeña, score GRACE, riesgo de mortalidad.

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