bluuebunny/crossref_metadata_2025 huggingface dataset:
About extremely allowable deformations of polymetallic rods during bending by focused loads
Authors: Немировский Юрий Владимирович
Published: June 2020

Исследованы возможные предельно допустимые состояния слоистых полиметаллических стержней постоянного сечения при воздействии произвольно расположенных в пролете сосредоточенных нагрузок. Рассматриваются три возможных предельных состояния: первое (предельно упругое), второе (состояние предразрушения) и третье (состояние разрушения). Сформулированы условия их реализации, определены соответствующие уровни предельных нагрузок и намечены пути управления параметрами нагружающих устройств для обеспечения благоприятных процессов деформирования.

Possible maximum permissible states of layered polymetallic rods of constant cross section under the influence of concentrated loads arbitrarily located in the span are studied. Three possible limiting states are considered: the first (extremely elastic), the second (pre-fracture state) and the third (fracture state). The conditions for their implementation are formulated, the corresponding levels of ultimate loads are determined, and ways to control the parameters of loading devices to ensure favorable deformation processes are outlined.
An approximate solution of the one class third order onlinear differential equation in the analyticity domain
Authors: Орлов Виктор Николаевич , Разакова Рио-Рита Вадимовна
Published: June 2020

В работе рассмотрен класс нелинейных дифференциальных уравнений третьего порядка с полиномиальной правой частью шестой степени. Доказана теорема существования и единственности решения в области аналитичности. Построено аналитическое приближенное решение. Предложен вариант оптимизации априорных оценок с помощью апостериорных. Проведен численный эксперимент.

There is a class of third-order nonlinear differential equations with polynomial right part of the sixth degree considered in the paper. The existence and uniqueness theorem of a solution in the domain of analyticity is proved by authors. There is an analytical approximate solution which was constructed by V. Orlov and R. Razakova. A variant of optimization of a priori estimates using posterior ones is proposed by authors. A numerical experiment is carried out too.
Methods of hepatic vascular control for liver resection
Authors: Ninh Viet Khai
Published: June 2020

Controlling and reduction of the bleeding are one of the key factors in liver resection, to ensure a safe resection, and to reduce post-operative complication, especially post-operative liver failure. Hepatic vascular clamping helps to reduce intra-operative bleeding. Each method of controlling hepatic vascular needs to be applied accordingly to each injury, liver parenchymal condition. Understanding of hepatic vascular control techniques in liver resection is very useful for surgeons when conducting hepatectomy.
Nghiên cứu kết quả điều trị viêm nướu có hỗ trợ laser diode trên bệnh nhân Hemophilia
Authors: Nguyễn Duy Thăng
Published: June 2020

RESULT OF GINGIVITIS TREATMENT WITH LASER DIODE SUPPORT
IN HEMOPHILIA PATIENTS

Back ground: Gingivitis is among the most prevalent oral disease. The inflammation and congestion of periodontal tissue increases the risk of bleeding in patients with hemophilia. Using laser diode to support periodontal treatment has been shown to have good results.
Aim: To determine the clinical features of gingivitis in patients with hemophilia and evaluation of the
results of gingivitis treatment on this patients with laser diode support.
Materials and methods: This is a descriptive, prospective study with uncontrolled clinical intervention in 32 patients with chronic gingivitis, hemophilia is being treated in Hue Central Hospital from March 2017 to May 2018.
Results: All of 32 patients were male, the average age of patients is 26.62 ± 8.15, over 90% patients have clinical symptoms of gingivitis, periodontal index GI, PLI, SBI, CI were mainly poor level before treatment. Periodontal index improve well when compared before with after treatment. But at 3 months, periodontal index increase when compared with 1 month.
Conclusion: The periodontal status of patients with hemophilia is not good. It is necessary to improve the knowledge of dental care for patients and there should be combination between Hematology and Odonto-stomatology in order to examination, consultative and treatment of oral diseases for patients with hemophilia.
Laser diode has been shown good results in the treatment of chronic gingivitis.
Key words: Periodontal, hemophilia, gingival index, plaque index, sulcus bleeding index, calculus index.
Đánh giá kết quả điều trị phình động mạch não bằng phẫu thuật kẹp clip vi phẫu
Authors: Võ Bá Tường
Published: June 2020

EVALUATION OF THE RESULT OF INTRACRANIAL ANEURYSM MICROSURGICAL
TREATMENT BY CLIPPING

Objective: To describe of clinical features, imaging finding and evaluate the results of intracranial aneurysm microsurgical treatment by clipping.
Methods: Prospective described study of 41 cases of cranial aneurysm indicated to surgical treatment at Neurosurgery Department - Hue central hospital from March - 2017 to June - 2019.
Results: The outcome at the time discharged from hospital, 65,8% had good recovery (GOS 4-5), 7.3% had moderate outcome (GOS 3) and 26.9% had bad outcome (GOS 1-2), 10 patients died (24.4%). The proportion of better recovery after 3 months was 29%, and1 patient died at home. Checked DSA after surgery, 96.9% of aneurysm was completely removed Conclusions: The proportion of ruptured intracranial aneurysm is very low, but the outcome is often bad. Nowadays, there are many method treatment for intracranial aneurism, but microsurgical treatment still remains its important roles and is improvement for better outcome.
Key words: intracranial aneurysm, microsurgical treatment by clipping
FACTORS INFLUENCING INDIVIDUALS’ DECISION-MAKING AND CAUSING FINANCIAL CRISIS
Authors: Jurevičienė Daiva , Skvarciany Viktorija , Lagunavičiūtė Austė
Published: June 2020

It is essential to look at financial crises from both theoretical and practical aspects,
as this is an old and recurring phenomenon. However, it is still unknown how to manage their formation.
The article aims at assessing the influence of individuals’ financial decisions on financial crisis formation.
The interface between economic decisions made by individuals and financial crises is assessed using expert
evaluation method. The multi-criteria estimation performed using the TOPSIS method to evaluate when individuals
make the most irrational decisions. Moreover, finally, economic decisions rationality index is concluded,
evaluating when individuals make ridiculous decisions. The rationality index of economic decisions measures
the number of irrational decisions during the economic expansion. Economic decisions rationality index divided
into three groups: economic factors, financial sector and psychological factors. Assessment of the irrational
decisions made during the economic expansion demonstrates that during the first period (2001–2006) the least
irrational decisions were made in 2001 and the most in 2004; while during the second period (2010–2017), the
least irrational decisions were made in 2011 and the most in 2015. The limitation of the research is that
the data is accessible only for the US; hence, the results could differ in other countries.
Sensitivity Analyses of Exoplanet Occurrence Rates from Kepler and
Gaia
Authors: Shabram Megan I. , Batalha Natalie , Thompson Susan E. , Hsu Danley C. , Ford Eric B. , Christiansen Jessie L. , Huber Daniel , Berger Travis , Catanzarite Joseph , Nelson Benjamin E. , Bryson Steve , Belikov Ruslan , Burke Chris , Caldwell Doug
Published: June 2020

We infer the number of planets per star as a function of orbital period and
planet size using Kepler archival data products with updated stellar properties
from the Gaia Data Release 2. Using hierarchical Bayesian modeling and
Hamiltonian Monte Carlo, we incorporate planet radius uncertainties into an
inhomogeneous Poisson point process model. We demonstrate that this model
captures the general features of the outcome of the planet formation and
evolution around GK stars and provides an infrastructure to use the Kepler
results to constrain analytic planet distribution models. We report an increased
mean and variance in the marginal posterior distributions for the number of
planets per GK star when including planet radius measurement uncertainties. We
estimate the number of planets per GK star between 0.75 and 2.5
R
⊕ and with orbital periods of
50–300 days to have a 68% credible interval of 0.49–0.77 and
a posterior mean of 0.63. This posterior has a smaller mean and a larger
variance than the occurrence rate calculated in this work and in Burke et al.
for the same parameter space using the
Q1−Q16 (previous Kepler planet
candidate and stellar catalog). We attribute the smaller mean to many of the
instrumental false positives at longer orbital periods being removed from the
DR25 catalog. We find that the accuracy and precision of our hierarchical
Bayesian model posterior distributions are less sensitive to the total number of
planets in the sample, and more so for the characteristics of the catalog
completeness and reliability and the span of the planet parameter space.
Coupled Thermal and Compositional Evolution of Photoevaporating Planet Envelopes
Authors: Malsky Isaac , Rogers Leslie A.
Published: June 2020

Photoevaporative mass loss sculpts the atmospheric evolution of tightly orbiting sub-Neptune-mass exoplanets. To date, models of the mass loss from warm Neptunes have assumed that the atmospheric abundances remain constant throughout the planet’s evolution. However, the cumulative effects of billions of years of escape modulated by diffusive separation and preferential loss of hydrogen can lead to planetary envelopes that are enhanced in helium and metals relative to hydrogen. We have performed the first self-consistent calculations of the coupled thermal, mass-loss, and compositional evolution of hydrogen–helium envelopes surrounding sub-Neptune-mass planets. We extended the Modules for Experiments in Stellar Astrophysics stellar evolution code to model the evolving envelope abundances of photoevaporating planets. We demonstrate that H–He fractionation can lead to planetary envelopes that are significantly enriched in helium and metals compared to their initial primordial compositions. A subset of our model planets—having R
p ≲ 3.00 R
⊕, initial f
env < 0.5%, and irradiation flux ∼101–103 times that of Earth—obtain final helium mass fractions in excess of Y = 0.40 after several billion years of mass loss. GJ 436b, the planet that originally inspired Hu et al. to propose the formation of helium-enhanced planetary atmospheres, requires a primordial envelope that is too massive to become helium enhanced. Planets with envelope helium fractions of Y = 0.40 have radii that are between 0.5% and 10% smaller (depending on their mass, irradiation flux, and envelope mass fraction) than similar planets with solar composition (Y = 0.24) envelopes. The results of preferential loss of hydrogen may have observable consequences for the M
p − R
p relations and atmospheric spectra of sub-Neptune populations.
Three-dimensional Distribution Map of H i Gas and Galaxies around an Enormous Lyα Nebula and Three QSOs at z = 2.3 Revealed by the H i Tomographic Mapping Technique
Authors: Mukae Shiro , Ouchi Masami , Cai Zheng , Lee Khee-Gan , Prochaska J. Xavier , Cantalupo Sebastiano , Ono Yoshiaki , Zheng Zheng , Nagamine Kentaro , Suzuki Nao , Silverman John D. , Misawa Toru , Inoue Akio K. , Hennawi Joseph F. , Matsuda Yuichi , Mawatari Ken , Sugahara Yuma , Kojima Takashi , Shibuya Takatoshi , Harikane Yuichi , Fujimoto Seiji , Chiang Yi-Kuan , Zhang Haibin , Kakuma Ryota
Published: June 2020

We present an IGM H i tomographic map in a survey volume of

(cMpc3) centered at MAMMOTH-1 nebula and three neighboring quasars at z = 2.3. The MAMMOTH-1 nebula is an enormous Lyα nebula (ELAN), hosted by a type-II quasar dubbed MAMMOTH1-QSO, that extends over

cMpc with no clear physical origin. Here we investigate the H i-gas distribution around MAMMOTH1-QSO with the ELAN and three neighboring type-I quasars, making the IGM H i tomographic map with a spatial resolution of 2.6 h
−1 cMpc. Our H i tomographic map is reconstructed with H i Lyα forest absorption of bright background objects at z = 2.4–2.9: one eBOSS quasar and 16 Keck/LRIS galaxy spectra. We estimate the radial profile of H i overdensity for MAMMOTH1-QSO, and find that MAMMOTH1-QSO resides in a volume with fairly weak H i absorption. This suggests that MAMMOTH1-QSO may have a proximity zone where quasar illuminates and photoionizes the surrounding H i gas and suppresses H i absorption, and that the ELAN is probably a photoionized cloud embedded in the cosmic web. The H i radial profile of MAMMOTH1-QSO is very similar to those of three neighboring type-I quasars at z = 2.3, which is compatible with the AGN unification model. We compare the distributions of the H i absorption and star-forming galaxies in our survey volume, and identify a spatial offset between density peaks of star-forming galaxies and H i gas. This segregation may suggest anisotropic UV background radiation created by star-forming galaxy density fluctuations.
VERITAS Discovery of VHE Emission from the Radio Galaxy 3C 264: A Multiwavelength Study
Authors: Archer A. , Benbow W. , Bird R. , Brill A. , Buchovecky M. , Buckley J. H. , Carini M. T. , Christiansen J. L. , Chromey A. J. , Daniel M. K. , Errando M. , Falcone A. , Feng Q. , Fortin P. , Fortson L. , Furniss A. , Gent A. , Georganopoulos M. , Gillanders G. H. , Giuri C. , Gueta O. , Hanna D. , Hassan T. , Hervet O. , Holder J. , Hughes G. , Humensky T. B. , Kaaret P. , Kertzman M. , Kieda D. , Krennrich F. , Lang M. J. , Lin T. T. Y. , Lister M. L. , Lundy M. , Maier G. , Meyer E. , Moriarty P. , Mukherjee R. , Nieto D. , Nievas-Rosillo M. , O’Brien S. , Ong R. A. , Pfrang K. , Pohl M. , Prado R. R. , Pueschel E. , Quinn J. , Ragan K. , Ramirez K. , Reynolds P. T. , Ribeiro D. , Richards G. T. , Roache E. , Rulten C. , Ryan J. L. , Sadun A. , Santander M. , Scott S. S. , Sembroski G. H. , Shahinyan K. , Shang R. , Stevenson B. , Vassiliev V. V. , Wakely S. P. , Weinstein A. , Wilcox P. , Wilhelm A. , Williams D. A. , Williamson T. J
Published: June 2020

The radio source 3C 264, hosted by the giant elliptical galaxy NGC 3862, was observed with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) between 2017 February and 2019 May. These deep observations resulted in the discovery of very high energy (VHE; E > 100 GeV) γ-ray emission from this active galaxy. An analysis of ∼57 hr of quality-selected live time yields a detection at the position of the source, corresponding to a statistical significance of 7.8 standard deviations above background. The observed VHE flux is variable on monthly timescales, with an elevated flux seen in 2018 observations. The VHE emission during this elevated state is well characterized by a power-law spectrum with a photon index Γ = 2.20 ± 0.27 and flux F(>315 GeV) = (

cm−2 s−1, or approximately 0.7% of the Crab Nebula flux above the same threshold. 3C 264 (z = 0.0217) is the most distant radio galaxy detected at VHE, and the elevated state is thought to be similar to that of the famously outbursting jet in M87. Consequently, extensive contemporaneous multiwavelength data were acquired in 2018 at the time of the VHE high state. An analysis of these data, including Very Long Baseline Array, Very Large Array, Hubble Space Telescope, Chandra, and Swift observations in addition to the VERITAS data, is presented, along with a discussion of the resulting spectral energy distribution.
Bridging between the Integrated and Resolved Main Sequence of Star Formation
Authors: Hemmati Shoubaneh , Mobasher Bahram , Nayyeri Hooshang , Shahidi Abtin , Capak Peter , Darvish Behnam , Chartab Nima , Jafariyazani Marziye , Sattari Zahra
Published: June 2020

The position of galaxies on the stellar mass, star formation rate (SFR) plane with respect to the star-forming main sequence at each redshift is a convenient way to infer where the galaxy is in its evolution compared to the rest of the population. We use Hubble Space Telescope high-resolution images in the GOODS-S field from the the Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS) and fit multiwavelength lights in resolution elements of galaxies with stellar population synthesis models. We then construct resolved kpc-scale stellar mass, SFR surface density curves for galaxies at z ∼ 1. Fitting these resolved main sequence curves with Schechter functions, we parameterize and explain the multiwavelength structure of galaxies with three variables: ϕ*, α, and M*. For quenched galaxies below the main sequence, we find an average high-mass slope (α) of the resolved main sequence curves to be ∼−0.4. The scatter of this slope is higher among the lower mass star-forming galaxies and those above the main sequence compared to quenched galaxies, due to lack of an evolved bulge. Our findings agree well with an inside-out quenching of star formation. We find that the knee of the Schechter fits (M*) for galaxies below the main sequence occurs at lower stellar mass surface densities compared to star-forming galaxies, which hints at how far quenching has proceeded outward.
L’histoire populaire : label éditorial ou nouvelle forme d’écriture du social ?
Authors: Ruiz Émilien
Published: June 2020

S’il fallut plus de deux décennies pour que l’ouvrage d’Howard Zinn, People’s History of the United States (Harper Collins, 1980), fût traduit en français sous le titre Une histoire populaire des États-Unis (Agone, 2002), les années 2010 ont vu se multiplier les histoires dites « populaires ». Il s’agit, pour partie, de traductions de people’s history of… qui offrent ainsi au lectorat francophone des histoires populaires de l’humanité, des sciences ou encore du sport. Mais depuis trois ou quatre ans, l’historiographie française s’est aussi enrichie de multiples « histoires populaires », qu’il s’agisse, par exemple, de Nantes, du football ou, bien entendu, de la France avec les parutions successives, en 2016 et 2018, des sommes de Michelle Zancarini-Fournel et Gérard Noiriel. Cette multiplication interroge : relève-t-elle d’une simple labellisation éditoriale ? Le succès commercial des travaux d’Howard Zinn et de ses déclinaisons (en BD, documentaires, versions abrégées, pour enfants, etc.) aurait ainsi conduit des éditeurs à tenter, sinon de reproduire le phénomène, de profiter de « la marque » que représente le titre. À moins que la lecture des ouvrages ainsi publiés nous conduise à observer l’émergence d’une nouvelle forme d’écriture du social ? Fruit de renouvellements historiographiques conduisant à renoncer à des formulations plus classiques, au premier rang desquelles « une histoire sociale de… ».
Visualización mediática de la ciencia: tipología de la infografía científica de prensa
Authors: Montes-Rojas Mª. Luisa , García-Gil Juanjo , Alonso Leija-Román David
Published: June 2020

Este artículo explora el tratamiento informativo de la infografía de la prensa internacional para emprender de manera eficaz procesos de comunicación y divulgación de los hechos relativos a la Ciencia y Tecnología (CyT). La integración de un método de análisis de contenido, aplicado a una muestra seleccionada de mejores prácticas en materia de infografía de periódicos y revistas que han recibido reconocimiento internacional a través de los premios Malofiej (N=149), fueron codificadas y analizadas para identificar características y patrones detallados con base a tres ejes de estudio: el planteamiento informativo (¿qué se dice?), los objetos gráficos y su correspondencia (¿cómo se dice?) y la función que desempeñan los infográficos (¿para qué se dice?). Los resultados indican que estas piezas informativas emplean distintos planteamientos informativos que reflejan en sus mensajes, los cuales conllevan al uso particular de determinados recursos de expresión (objetos gráficos), desempeñando de manera conjunta, diversas funciones comunicativas por parte del emisor con respecto al público al que se dirige; lo anterior, llevó a la conformación y descripción de tres modelos de infografía científica de prensa.
Comparación de la eficiencia científica entre Colombia y México a través de indicadores relativos de producción y calidad científica
Authors: Gómez-Velasco Nubia , Jiménez-González Ana , Rodríguez-Gutiérrez Julieth , Romero-Torres Mauricio
Published: June 2020

Con indicadores relativos analizamos la dinámica de la producción y calidad científica de Colombia y México en el área de Ciencias Sociales (CS). Entre 2006 a 2017 estimamos la producción científica, la inversión en I+D, la cantidad de doctores graduados, la calidad científica por medio del porcentaje de revistas Q1 con autorías nacionales y el porcentaje de citaciones en revistas prestigiosas visibles en Scopus. Encontramos que la inversión en I+D, la producción científica y los graduados doctores de México son superiores a Colombia; sin embargo, Colombia superó a México en la eficiencia de la investigación. Ni Colombia ni México reportaron revistas en Q1 para CS, lo cual reflejó sus bajos niveles de indicadores de citación. Mostramos que el uso de indicadores relativos complementa al análisis bibliométrico tradicional.
Actualidad en estudios LibQUAL+®: paradigmas de la biblioteca informativa y social-creadora y cuestión de género como reflejos de la realidad social
Authors: Lázaro-Rodríguez Pedro , López-Gijón Javier , Alonso Sergio , Herrera-Viedma Enrique
Published: June 2020

Los objetivos de este artículo son cuatro: analizar las principales diferencias en torno a las dimensiones mejor valoradas de tres estudios sobre satisfacción de personas usuarias basados en LibQUAL+® llevados a cabo en bibliotecas universitarias de España, Argentina y Chile; analizar las diferencias atendiendo a la variable de género (hombres y muje­res); determinar si las diferencias en cuanto a género son estadísticamente significativas; y discutir y reflexionar sobre los resultados hallados en el ámbito concreto de las bibliotecas como reflejo de la realidad social en general. Los resultados per­miten concluir que en España las personas usuarias están menos satisfechas con la dimensión de la biblioteca como espacio, mientras que en Latinoamericana se percibe menor grado de satisfacción también con el control de la información. El mayor grado de satisfacción en todos los estudios se da en el valor afectivo del servicio. Las mujeres en España muestran menor satisfacción y mayor exigencia que los hombres en el valor afectivo del servicio. Además, se hallaron diferencias estadísti­camente significativas en el análisis de las medias por género. En la discusión se ponen en relación los resultados hallados con la literatura existente, definiendo los paradigmas posibles de la biblioteca informativa frente al de la social-creadora y la percepción de la satisfacción por géneros según el contexto social en que se hallan las bibliotecas. La limitación principal del artículo es que se basa en tres estudios concretos; y su principal valor y originalidad, que puede considerarse como punto de partida para futuras investigaciones sobre la cuestión de género en lo que a bibliotecas y los servicios que ofrecen se refiere.
Los rankings académicos y la distribución por género de las universidades
Authors: Luque-Martínez Teodoro , Faraoni Nina , Doña-Toledo Luis
Published: June 2020

Este trabajo examina la distribución por género de las universidades, a través de un porcentaje de mujeres dentro del alumnado, y comprueba si tal distribución tiene alguna relación con la posición de las universidades en los rankings universitarios. Se han seleccionado siete rankings, globales y sintéticos, disponiendo de datos de la distribución por género del alumnado para 924 universidades. Los resultados confirman que las universidades con una equilibrada distribución entre hombres y mujeres presentan mayores puntuaciones, por tanto, mejores posiciones en los rankings. Las universidades con mayor presencia femenina en el alumnado son las de ratio más alto de estudiantes por profesor y las que alcanzan mayores valoraciones medias en los indicadores de internacionalización. En los indicadores de premios Nobel y medallas Fields, e ingresos procedentes de la industria, las universidades con mayor presencia masculina tienen mayores puntuaciones medias. Los resultados pueden contribuir a la mejora de las políticas de igualdad en las universidades, así como a orientar las decisiones estratégicas y de gestión de las mismas.
Algorithms in the IoT
Authors: Koller Mark , Ploder Christian , Bernsteiner Reinhard C. , Dilger Thomas
Published: June 2020

As a result of globalization and a surplus of goods, the pressure on companies in terms of price and time, increases continuously. To meet the new requirements, it is necessary to decrease expenses on resources and gain knowledge through data. Therefore, this chapter identifies scenarios of how to implement algorithms into an internet of things, ways to evaluate different scenarios, and shows how algorithms can be implemented in the device, gateway, or a cloud service. In conclusion, it gives an evaluation model which supports every company implementing IoT.
A Framework for the Evaluation of NoSQL Databases for Big Data Use Cases
Authors: Endres Julian , Bernsteiner Reinhard C. , Ploder Christian
Published: June 2020

This article provides a comprehensive use case-based comparison framework for the selection of the most suitable database for specific requirements and application domains. The concept of a NoSQL Enterprise Readiness Index which is a comparable numeric measurement for the fitness of a NoSQL database in enterprise use cases is proposed. It is calculated by the fulfillment of a comprehensive set of weighted criteria distilled from comprehensive research. The goal of the developed NoSQL Enterprise Readiness Index (NERI) is to provide a numeric index value for the comparison and benchmarking of NoSQL databases in enterprise use cases. The calculation of NERI is based on 43 criteria in which the single database product is evaluated. To be reproducible with more products and to guarantee a consistent evaluation among the products, a fulfillment matrix is used. The fulfillment matrix describes for each of the 43 criteria the four different levels of fulfillment in a mostly qualitative way and therefore guides the evaluator in choosing the right point value.
Development of Accurate and Timely Students' Performance Prediction Model Utilizing Heart Rate Data
Authors: Wong Mu Lin , S. Senthil
Published: June 2020

Academic Performance Prediction models mustn't be accurate only, but timely too, to identify at-risk students at the earliest to provide remedy. Heart rate data of 50 students in 3 main courses are collected, processed, and analyzed to distinguish the difference between excellent students and at-risk students. Three of the 12 heart rate attributes were chosen to calculate the threshold values, which are used to predict at-risk students. Half of the at-risk students were identified after week 5. Later, the datasets were rebalanced. Using four Data Mining classifiers, six attributes were identified to be the best attributes for prediction model development. The datasets were then dimensionally reduced. Applying classification, half of the at-risk students were identified earliest around week 5 of the 12-week semester. J48 is the most robust classifier, compared to JRip, Multi-Level-Perceptron, and RandomForest, making accurate prediction on at-risk students earlier most of the time.
Sentiment Analysis of Game Review Using Machine Learning in a Hadoop Ecosystem
Authors: Panwar Arvind , Bhatnagar Vishal
Published: June 2020

Internet, & more unambiguously the creation of WWW in the early 1990s, helped people to build an interconnected global platform where information can be stored, shared, and consumed by anyone with an electronic device which has the ability to connect to the Web. This provides a way of putting together lots of information, ideas, and opinion. An interactive platform was born to post content, messages, and opinions under one roof, and the platform is known as social media. Social media has acquired massive popularity and importance that why today almost everyone can't stay away from it. Social media is not only a medium for people to express their thoughts, moreover, but it is also a very powerful tool which can be used by businesses to focus on new and existing customers and increase profit with the help of social media analytics. This paper starts with a discussion on social media with its significance & pitfalls. Later on, this paper presents a brief introduction of sentiment analysis in social media and give an experimental work on sentiment analysis in a social game review.
Contemporary Biometric System Design
Authors: Purohit Himanshu , Ajmera Pawan K
Published: June 2020

Individual's Identity Authentication depends on physical traits like face, iris, and fingerprint, etc., or behavioral traits like voice and signature. With the rapid advancement in the field of biometrics, multimodal biometric systems are replacing unimodal biometric systems. As the application of molecular biometric system removes certain errors like noisy data, interclass variations, spoof attacks, and unacceptable error rates as compared to unimodal biometric systems. Even the possibilities of multiple scenarios present in multimodal biometric systems are quite helpful for the consolidation of information using different levels of fusion. In this chapter, the authors try to analyze the technological change which is present due to growing field of biometrics with artificial intelligence and undergone a thorough research for multimodal biometric systems for effective authentication purpose. This study is quite helpful for getting different perception for the use of biometrics as a highest level of network security due to the fusion of many different modalities.
A Survey on Different Approaches to Automating the Design Phase in the Software Development Life Cycle
Authors: Shankar Sahana Prabhu , Agrawal Harshit , E. Naresh
Published: June 2020

Software design is a basic plan of all elements in the software, how they relate to each other in such a way that they meet the user requirements. In software development process, software design phase is an important phase as it gives a plan of what to do and how to do it during the implementation phase. As the technology is evolving and people's needs in the technological field are increasing, the development of software is becoming more complex. To make the development process somewhat easy, it is always better to have a plan which is followed throughout the process. In this way, many problems can be solved in the design phase, for which a number of tools and techniques are present. One is known as Design Patterns. In software engineering, a design pattern is a general solution to commonly occurring problems in software design. A design pattern isn't a finished design that can be transformed directly into code.
Knowledge Management in Academics
Authors: Ananthaswamy Prabhakar , Shankar Sahana Prabhu
Published: June 2020

The present learning teaching process is a transition from ignorance to knowledge. Manifested beings operate in three modes, namely I don't know, I learn, and I know mode. The learning teaching model assumes that the teachers, books, and internet are the sources of knowledge. It is believed that the teacher is imparting the knowledge to the students who are ignorant about the subject of study. The irony is that even though it is the same teacher, same environment, some learn and some fail to learn. This has left many educators and teachers baffled. Sometimes the barrier between a teacher and learner has become a major issue in the learning process. At the end, unfortunately, students are being labeled based on their abilities. From time immemorial, this model is being adopted. Teaching and learning is happening with the primordial ignorance and with limited awareness about the learner. A human being can be considered as an ideal natural learning engine.
Small-Scale Sport Event Planning
Authors: Mombeuil Claudel
Published: June 2020

Event planning remains one of the core elements for the success of small-scale sports events. In the case of for-profit organizations, a small-scale sport event may be planned to increase awareness of a new product or service, whereas a small-scale sport event may be organized by not-for-profit organizations to raise concerns or awareness of social and environmental issues. However, it is important that the sporting event that is being organized is in sync with the mission of the organization and must meet the expectation of the target audience. Therefore, substantial information regarding the target audience is needed. More importantly, the sport event managers must ensure that the objectives and the expected outcomes of the small-scale sporting event are smart. By developing smart small-scale event objectives and outcomes, sport event managers can distribute roles and responsibilities to team members more efficiently. During the planning phase, sport event managers also needs to take into consideration the venue to host the event, the third-party service providers, and a contingency plan.
Efficient Strategies of VMs Scheduling Based on Physicals Resources and Temperature Thresholds
Authors: Dad Djouhra , Belalem Ghalem
Published: June 2020

Cloud computing offers a variety of services, including the dynamic availability of computing resources. Its infrastructure is designed to support the accessibility and availability of various consumer services via the Internet. The number of data centers allow the allocation of the applications, and the process of data in the cloud is increasing over time. This implies high energy consumption, thus contributing to large emissions of CO2 gas. For this reason, solutions are needed to minimize this power consumption, such as virtualization, migration, consolidation, and efficient traffic-aware virtual machine scheduling. In this article, the authors propose two efficient strategies for VM scheduling. SchedCT approach is based on dynamic CPU utilization and temperature thresholds. SchedCR approach takes into consideration dynamic CPU utilization, RAM capacity, and temperature thresholds. These approaches have efficiently decreased the energy consumption of the data centers, the number of VM migrations, and SLA violations, and this reduces, therefore, the emission of CO2 gas.
Moral Distress, Mattering, and Secondary Traumatic Stress in Provider Burnout: A Call for Moral Community
Authors: Epstein Elizabeth G. , Haizlip Julie , Liaschenko Joan , Zhao David , Bennett Rachel , Marshall Mary Faith
Published: June 2020

Burnout incurs significant costs to health care organizations and professionals. Mattering, moral distress, and secondary traumatic stress are personal experiences linked to burnout and are byproducts of the organizations in which we work. This article conceptualizes health care organizations as moral communities—groups of people united by a common moral purpose to promote the well-being of others. We argue that health care organizations have a fundamental obligation to mitigate and prevent the costs of caring (eg, moral distress, secondary traumatic stress) and to foster a sense of mattering. Well-functioning moral communities have strong support systems, inclusivity, fairness, open communication, and collaboration and are able to protect their members. In this article, we address mattering, moral distress, and secondary traumatic stress as they relate to burnout. We conclude that leaders of moral communities are responsible for implementing systemic changes that foster mattering among its members and attend to the problems that cause moral distress and burnout.
Ore mineralogy and mineral chemistry of the Whale Tail zone, Amaruq gold deposit, Nunavut
Authors: Lauzon M -C , Mercier-Langevin P , Valette M , Beaudoin G , De Souza S , Côté-Mantha O , Simard M
Published: June 2020

The 6 Moz Au (190 metric t Au) Amaruq deposit is hosted in a sequence of complexly deformed and metamorphosed chert, graphitic argillite, silicate-facies banded iron formation and mafic-ultramafic volcanic rocks of the Archean Woodburn Lake group in the Kivalliq
region of Nunavut. The region was affected by Archean and Paleoproterozoic orogeneses and most Au occurrences are interpreted to be associated with the ca 1.91-1.81 Ga Trans-Hudson event. However, new work indicates that some of the Au may be Early Paleoproterozoic or perhaps even Archean, raising
uncertainty about the timing of the Au ore-forming event(s) versus the tectonometamorphic evolution of the region.
The arsenopyrite- and pyrrhotite-dominant Au mineralization of the Whale Tail zone of the Amaruq deposit was sampled from representative drill core to determine the timing of Au introduction relative to the main deformation and associated metamorphism in the study area. Petrography and
micro-analyses indicate that the sulphides underwent a complete prograde-retrograde metamorphic cycle, with pre-peak metamorphism Au-rich arsenopyrite being replaced by an assemblage of syn-peak prograde Au-rich löllingite and pyrrhotite. This was followed by retrogression of löllingite to
Au-poor secondary arsenopyrite and native Au and electrum inclusions.
Protective role of a melon superoxide dismutase combined with gliadin (GliSODin) on the status of lipid peroxidation and antioxidant defense against azoxymethane-induced experimental colon carcinogenesis
Authors: Baba-Ahmed Fedia , Guedri Kamilia , Trea Fouzia , Ouali Kheireddine
Published: June 2020

Background:

Azoxymethane (AOM) is a potent carcinogenic agent commonly used to induce colon cancer in rats and mice, with the cytotoxicity of AOM mediated by oxidative stress.

Aim of Study:

This study investigated the protective effect of a natural antioxidant (GliSODin) against AOM-induced oxidative stress and carcinogenesis in rat colon.

Methods:

Twenty male Wistar rats were randomly divided into four groups (five rats/group). The control group was fed a basal diet. AOM-treated group (AOM) was fed a basal diet and received intraperitoneal injections of AOM for 2 weeks at a dose of 15 mg/kg. The GliSODin treatment group (superoxide dismutase [SOD]) received oral supplementation of GliSODin (300 mg/kg) for 3 months, and the fourth combined group received AOM and GliSODin (AOM + SOD). All animals were continuously fed ad libitum until the age of 16 weeks when all rats were sacrificed. The colon tissues were examined microscopically for pathological changes and aberrant crypt foci (ACF) development, oxidant status (lipid peroxidation-LPO), and enzyme antioxidant system (glutathione [GSH], GSH-S-transferase, catalase, and SOD).

Results:

Our results showed that AOM induced ACF development and oxidative stress (GSH depletion and lipid peroxidation) in rat colonic cells. The concomitant treatment of AOM with GliSODin significantly ameliorated the cytotoxic effects of AOM.

Conclusion:

The results of this study provide in vivo evidence that GliSODin reduced the AOM-induced colon cancer in rats, through their potent antioxidant activities.
Contribution of radiobiphosphonates bone scan in multifocal tuberculous osteomyelitis
Authors: Nabih Salah , Sahel Omar , Benameur Yassir , Doudouh Abderrahim
Published: June 2020

We share the case of a 86-year-old male patient, followed up for recent left hip pain. Interrogation revealed a fever, nocturnal shivering, and bone pains. Standard radiographs and computed tomography centered on both shoulders and pelvis showed osteoarthritis of the left hip and multiple lytic lesions in both humeral heads and clavicles, suggestive of chronic infectious, metabolic, or secondary disease. Bone scan with radiobiphosphonates showed intense and diffuse uptake in the clavicles, the two humeral heads, and at the cervical and dorsal spine. Biopsy of the left humeral head confirmed the diagnosis of tuberculous osteomyelitis, showing an aspect of caseo-follicular tuberculosis. Bone scan with radiobiphosphonates can be used in our context to search other localizations falling within the framework of a polystotic form, and also to guide nonrisk biopsy in such group of patients.
Synchronous osseous metastasis, degenerative changes, and incidental multifocal Paget's disease in a case of newly diagnosed prostatic carcinoma
Authors: Devita Robert , Chagarlamudi Kaushik , Kardan Arash
Published: June 2020

Tc-99m methylene diphosphonate bone scintigraphy (bone scan) is a highly sensitive technique for the evaluation of osseous pathology. However, the nonspecificity of the method can present diagnostic challenges in differentiating benign from malignant processes. Often, Paget's disease and osseous metastasis can coexist in elderly patients. Therefore, it is important to accurately distinguish the two pathologies, as each has a different prognosis and impacts clinical management. Obtaining the appropriate clinical diagnosis often involves a combination of laboratory, radiographic, and clinical data. We present a case of newly diagnosed prostatic carcinoma presenting with synchronous osseous metastasis, degenerative changes, and incidental multifocal Paget's disease.
Diagnostic value of the rim sign on hepatobiliary scintigraphy
Authors: Shikare Vinod Shekhar
Published: June 2020

The most commonly accepted pathophysiologic mechanism for the appearance of the “hot rim” sign is inflammatory changes from the gallbladder spreading to and affecting the surrounding liver. The “hot rim” sign has clinical relevance, because it is associated with a high incidence of perforated or gangrenous cholecystitis. The presence of these above-mentioned conditions increases the likelihood of complications and warrants urgent surgical evaluation. We present present the findings of on hepatobiliary scintigraphy and adjunct single-photon emission computed tomography/computed tomography-fused imaging in a case of acalculous cholecystitis, which has been confirmed on histopathology (marked degree of acute gangrenous cholecystitis).
Faltings extension and Hodge-Tate filtration for abelian varieties over p-adic local fields with imperfect residue fields
Authors: He Tongmu
Published: June 2020

Let K be a complete discrete valuation field of characteristic
$0$
, with not necessarily perfect residue field of characteristic
$p>0$
. We define a Faltings extension of
$\mathcal {O}_K$
over
$\mathbb {Z}_p$
, and we construct a Hodge-Tate filtration for abelian varieties over K by generalizing Fontaine’s construction [Fon82] where he treated the perfect residue field case.
Growth of frequently hypercyclic functions for some weighted Taylor shifts on the unit disc
Authors: Mouze Augustin , Munnier Vincent
Published: June 2020

For any
$\alpha \in \mathbb {R},$
we consider the weighted Taylor shift operators
$T_{\alpha }$
acting on the space of analytic functions in the unit disc given by
$T_{\alpha }:H(\mathbb {D})\rightarrow H(\mathbb {D}),$

$$ \begin{align*}f(z)=\sum_{k\geq 0}a_{k}z^{k}\mapsto T_{\alpha}(f)(z)=a_1+\sum_{k\geq 1}\Big(1+\frac{1}{k}\Big)^{\alpha}a_{k+1}z^{k}.\end{align*}$$
We establish the optimal growth of frequently hypercyclic functions for
$T_\alpha $
in terms of
$L^p$
averages,
$1\leq p\leq +\infty $
. This allows us to highlight a critical exponent.
Resolvent degree, Hilbert’s 13th Problem and geometry
Authors: Farb Benson , Wolfson Jesse
Published: June 2020

We develop the theory of resolvent degree, introduced by Brauer [Brau2] in order to study the complexity of formulas for roots of polynomials and to give a precise formulation of Hilbert’s 13th Problem. We extend the context of this theory to enumerative problems in algebraic geometry, and consider it as an intrinsic invariant of a nite group. As one application of this point of view, we prove that Hilbert’s 13th Problem, and his Sextic and Octic Conjectures, are equivalent to various enumerative geometry problems, for example problems of nding lines on a smooth cubic surface or bitangents on a smooth planar quartic.
الأبنية الصرفية "يَفْتَعِل" "تَفَاعَل" "مَفْعَل" ودورها الدلالي في الكلمة القرآنية دراسة تحليلية استقرائية
Authors: د. علي خليفة عطوة عبداللطيف د. علي خليفة عطوة عبداللطيف
Published: June 2020

تظهر مشكلة الدراسة من خلال وجود خلاف بين كتب تفسير القرآن الكريم حول الأبنية الصرفية الثلاثة: "يَفْتَعِل"، و"تَفَاعَل"، و"مَفْعَل"، ودورها الدلالي في الكلمة القرآنية، ومن ثم هدفت الدراسة إلى استقراء مواضع هذه الأبنية، ومعرفة ما بها من إعلال وإبدال، ثم تحليل دلالاتها الصرفية في مواضع ورودها في القرآن الكريم، سعيًا إلى فهم دلالة الكلمة القرآنية من خلال المعاني الصرفية للأبنية. واتبعت الدراسة المنهج التحليلي الاستقرائي، وجاءت في مقدمة وتمهيد وثلاثة مباحث: تضمن التمهيد مصطلحات الدراسة والتعريفات الإجرائية، وخُصصت المباحث لدراسة الأبنية الثلاثة -كل على حدة- واستقراء مواضعها، وما حدث فيها من حذف وقلب وإدغام، مع تحليل دلالاتها الصرفية. ومن أهم نتائج البحث أنه يمكن حصر معاني بنية "يَفْتَعِل" التي وردت في القرآن الكريم في خمسة معانٍ هي: المطاوعة، و المشاركة أو (التفاعلية)، و الاتخاذ، و الخطفة، و زيادة معنى الافتعال. ومعاني بنية "تَفَاعَل" في خمسة معانٍ هي: المشاركة أو (التفاعلية)، و التظاهر، و الدلالة على التدرج، والمطاوعة، و المبالغة. وأن بنية "مَفْعَل" تحتمل معنى المصدرية والزمانية والمكانية في كل مواضعها في القرآن الكريم، إلا في خمسة مواضع فقط، فلا تحتمل إلا معنى المصدرية؛ هي: {مَيْسَرَة}، و{مَعْشَر}، و{مَفَرُّ}، و{مَعَاش}، و{مَيْمَنَة}.
"البحرين من الخكيكرة إلى قزقز 1811م – 1828م"
Authors: د. عبدالله بن علي آل خليفة د. عبدالله بن علي آل خليفة
Published: June 2020

تتمتع البحرين بموقع له الأثر الكبير في تبوئها مركزاً اقتصادياً كبيراً في مجال التجارة في الخليج العربي والدول المطلة عليه، فيما أتاح لها موقعها الذي يتوسط دول الخليج العربي ميزة تفوق أهمية أي بلد في الخليج العربي، فكان أهل البحرين يقومون بدور الوسيط بين دول الخليج العربي فيما اكتسبوا من خلال اتصالاتهم خبرة تجارية واسعة، وأصبحت مركز التقاء الحضارات المتقدمة، وقد اكتسبت ذلك من شهرة تجارية ممتدة لعصور قديمة غابرة، والتي كانت كمركز تجاري بين حضارات الشرق والغرب. ظلت البحرين محتفظة بمكانتها التجارية حتى بعد عصر الاكتشافات الجغرافية الغربية، وحفر قناة السويس في النصف الثاني من القرن التاسع عشر، في الوقت الذي فقدت فيه الكثير من المراكز التجارية مكانتها. لقد كانت البحرين مسرحاً للنزاعات بين القوى الأجنبية المختلفة فيما لم تسلم البحرين من محاولات التوسع العربية الإقليمية أيضاً، وذلك راجع لما تحتويه من ثروة طائلة تمثلت في صيد اللؤلؤ. أظهر العتوب المهارة والحكمة في تعاملهم مع المعتدين، فحافظوا على البحرين بالتزامن مع فرض سيطرتهم على البحر ومحافظتهم على ثرواتها الطبيعية، وبخاصة تجارة اللؤلؤ التي كانت تمثل العمود الفقري للبحرين ولدول الخليج العربي في القرن التاسع عشر، وقد استمر إلى بداية ظهور النفط واندثار مهنة الغوص وصيد اللؤلؤ.
موقف أئمة الزيدية من المخالفين (عبدالله بن حمزة نموذجاً)
Authors: د. عبدالرحمن بن علي بن أحمد الزهراني د. عبدالرحمن بن علي بن أحمد الزهراني
Published: June 2020

يدرس هذا البحث موقف فرقة الزيدية ممن خالفهم من الفرق ، وذلك من خلال دراسة أحد أهم أئمتهم وأبرزهم وهو عبدالله بن حمزة. وقد خلص البحث إلى أن الزيدية تكفّر مخالفيها وتدعوا إلى قتلهم وقتالهم واستباحة أموالهم وسبي نسائهم وذراريهم، ووصل بهم الغلو إلى أن وقفوا من الصحابة رضوان الله عليهم موقف الرفض ، وقالوا ببطلان إمامة المشايخ الثلاثة رضي الله عنهم، وكفروا كل من لم يقل بحصر الإمامة في البطنين. كما أنهم يكفّرون من أثبت الصفات الإلهية ؛ وخلق أفعال العباد، ومن لم يعتقد اعتقادهم في الإمامة ، ويرون إعمال السيف فيهم. وقد أثبت البحث غلو الزيدية في موقفهم من المخالف، وتنزيلهم الآيات التي نزلت في الكفر الأكبر على المسلمين لمجرد مخالفتهم في مسألة الإمامة .
فلسفة الأصل النّحويّ دراسة تحليليّة مقارنة
Authors: د. توفيق بن زايد محمّد الفهمي د. توفيق بن زايد محمّد الفهمي
Published: June 2020

نظريّة الأصل عبارة عن كيان منفصل بين الثّنائيّات، لها ملامحها وأبعادها الخاصّة، أو لنقل: لها خصائص عليا تجريديّة؛ تنطبق على جزئيّات لا حصر لها، وفي طريق الوصول إلى إدراك مؤصَّل لفلسفة الأصل النّحويّ كانت عمليّة تجريد ثنائيّة الأصل والفرع الحقيقيّ ضرورة لنجاح هذه الدّراسة المقارنة، ومعرفة نقاط التّماسّ بين الأصليْن: العقليّ، والنّحويّ، وهل حصل اجترار من النّحويّ لهذا المنجز العقليّ بحذافيره، أم إنّه في استعانته بهذه النّظريّة قام بعمل ما يلزم من تعديلات عليها حتى ترعى خصوصيّته الفنّيّة؟