bluuebunny/crossref_metadata_2025 huggingface dataset:
Experiences of epistemic racism among occupational therapists
Authors: Beagan Brenda L. , Sibbald Kaitlin R. , Pride Tara M. , Bizzeth Stephanie R.
Published: April 2022

Abstract Objective Epistemic racism establishes the knowledges and ways of knowing of a dominant group as legitimate, invalidating those of groups marked by racialization. Professions are demarcated by their knowledge claims, making epistemic racism a powerful mechanism of exclusion within professions. This paper examines experiences of epistemic racism in occupational therapy across Canada. Method Using a critical interpretive qualitative approach, ten therapists from racialized groups were interviewed (in-person or telephone), with transcripts coded and analyzed iteratively. Results Participants routinely experienced epistemic ‘mis/fit’ with the profession, rarely seeing themselves reflected in the profession’s knowledge base, leadership, values or assumptions. Racialized therapists were routinely denied expertise and authority, by students, clients and colleagues. They walked a tightrope between professional assimilation and marginalization. Conclusion The presence of racialized therapists is insufficient, when their authority is consistently delegitimized and they are required to assimilate. Leadership roles for racialized therapists must be accompanied with epistemological multiplicity, destroying the domination of whiteness.
¿RECONOCE EL MERCADO LA RESPONSABILIDAD SOCIAL CORPORATIVA?
Authors: Sanchez-Lopez Juan Camilo , Bejarano Jesús María Godoy
Published: April 2022

RESUMEN Este artículo examina el impacto sobre el valor de mercado de las novedades en el Dow Jones Sustainability Index (DJSI) y su relación con los esfuerzos de difusión de esas novedades por parte de las empresas. A partir del análisis de 77 eventos de 13 empresas colombianas en el período 2009-2018, se muestra que los eventos relacionados con el DJSI generan retornos anormales insignificantes a los accionistas, y propone como explicación el exiguo esfuerzo de divulgación por parte de las empresas colombianas de este tipo de eventos.
DOES THE MARKET RECOGNIZE CORPORATE SOCIAL RESPONSIBILITY?
Authors: Sanchez-Lopez Juan Camilo , Bejarano Jesús María Godoy
Published: April 2022

ABSTRACT This article examines the impact of the Dow Jones Sustainability Index (DJSI) announcements that are prepared annually by RobecoSAM on the market value of Colombian firms. The analysis of 77 events and their impact on 13 firms for the 2009-2018 period found that DJSI-related events lead to insignificantly abnormal returns being generated for shareholders. The study suggests that this happens because Colombian companies do not widely disclose these types of event.
Early flowering, genetic dissimilarity and clustering of lettuce cultivars with thermoinhibition tolerant seeds
Authors: Catão Hugo Cesar RM , Gomes Luiz Antonio Augusto , Azevedo Alcinei M , Siquieroli Ana Carolina S , Maciel Gabriel M , Freitas Pamela GN
Published: April 2022

ABSTRACT High temperatures interfere with lettuce cropping. Thermoinhibition of seed germination and early flowering cause important losses for farmers. The objectives of this work were to evaluate the tolerance to early flowering, to verify the genetic dissimilarity and to select lettuce cultivars tolerant to seed thermoinhibition. 18 cultivars were evaluated. The number of days until the first anthesis was verified for early flowering. Regarding seed thermoinhibition, the first and final germination counting and germination speed index were evaluated, using temperatures of 20, 25, 30 and 35ºC. The analyses were performed immediately after harvest and after six months under storage. The genetic dissimilarity was obtained using the Tocher Graph optimization and hierarchical UPGMA methods. Regression models were adjusted, and curves’ clustering was performed by testing the identity of the models. Early flowering was observed in cultivars Floresta, Colorado, Grand Rapids, and Everglades. Cultivars showed genetic variability and are dissimilar regarding tolerance to thermoinhibition. By clustering the regression equations, it was possible to select thermoinhibition tolerant cultivars.
Agro-economic viability of lettuce-beet intercropping under green manuring in the semi-arid region
Authors: Guerra Natan M , Bezerra Neto Francisco , Lima Jailma SS , Santos Elizangela C , Nunes Renato LC , Porto Vania CN , Queiroga Roberto CF , Lino Vitor AS , Sá Jolinda M
Published: April 2022

ABSTRACT Producers who practice intercropped systems of leafy vegetables with tuberous ones, generally seek for systems that provide high productivity, greater diversification of production, high quality products and mainly agroeconomic return. Therefore, the objective of this work was to assess whether there is agro-economic viability of lettuce bi-cropping in intercrop with beet, under different equitable amounts of Merremia aegyptia and Calotropis procera biomass (20, 35, 50 and 65 t ha-1 on dry basis) and population densities of lettuce (150, 200, 250 and 300 thousand plants of lettuce ha-1), combined with 500 thousand plants per hectare of beet in two years of cultivation in semi-arid environment. Productivity of lettuce leaves and commercial productivity of beet roots were evaluated, as well as the agronomic indices: land equivalent ratio (LER), area-time equivalent ratio (ATER), productive efficiency index (PEI), score of the canonical variable (Z), actual yield loss (AYL), and the economic indicators: gross income (GI), net income (NI), monetary advantage (MA) and rate of return (RR). The highest agro-economic returns of the lettuce-beet intercropping were achieved with LER and ATER of 2.59 and 1.39; PEI and Z of 0.97 and 2.32; and AYL of 10.66; and GI, NI and MA of 94,742.89; 59,121.45; 56,631.98 R$ ha-1 and RR of R$ 2.75 for each real invested, respectively, in the combination of 65 t ha-1 of M. aegyptia and C. procera biomass and lettuce population density 300 thousand plants per hectare. Beet was the dominant crop and lettuce the dominated one. The lettuce and beet intercropping is highly viable when properly manured with biomass of M. aegyptia and C. procera, as they express agronomic and economic viability and sustainability in semi-arid environment.
Problemas enfrentados por alunas de graduação em ciência da computação: uma revisão sistemática
Authors: Silva Uyara Ferreira , Ferreira Deller James , Ambrósio Ana Paula Laboissière , Oliveira João Lucas dos Santos
Published: April 2022

Resumo Este estudo apresenta uma revisão sistemática da literatura sobre os problemas sofridos por universitárias de cursos de ciência da computação, com o objetivo de examinar os motivos que levam à evasão de meninas desse curso. Uma gama completa de periódicos indexados foi pesquisada usando os bancos de dados da ACM Digital Library, IEEE Xplore, ScienceDirect, Scopus, Web of Science e Springer. Um total de 818 artigos foram obtidos nas bibliotecas digitais, mas apenas 24 trabalhos foram aceitos para extração de dados desta revisão. Os resultados revelam que existem vários problemas que levam as meninas a evadir dos cursos de graduação em informática. Tais problemas foram descritos e classificados em seis categorias principais. Também foram abordadas iniciativas que vêm sendo aplicadas para minimizar o abandono dos cursos pelas alunas de graduação em ciência da computação. Apontar os principais problemas das estudantes de informática e identificar as limitações das iniciativas tomadas para solucioná-los é o primeiro passo para trabalhos futuros que proponham boas formas de contorná-los e delineiem soluções específicas para a sala de aula, conscientizando profissionais da educação e até colegas sobre estes problemas. A atenção a essas questões pode despertar o interesse dos pesquisadores, enquanto fazem a pós-graduação em STEM, em trabalhar para tornar mais positivas as experiências das alunas de graduação, diminuindo suas chances de evasão. Além disso, a partir dos resultados desta pesquisa, é possível tomar decisões acadêmicas, gerenciais e administrativas com base teórica em relação às questões de gênero.
Surface control techniques for tunnels in karst areas under airport taxiways
Authors: Yan Zhijian , Zhang Junru , Dai Yi , Yan Bo , Jiang Xiaorui
Published: April 2022

Under the conditions of karst development and soft upper and hard lower strata, ground-settlement control for tunnels under airport taxiways is stricter than for ordinary tunnels. Tunnel construction methods and karst disposal measures are also important. These are engineering problems that need to be solved urgently to ensure the safe passage of tunnels under airport taxiways. Taking the intercity railway tunnel under taxiways T3 and T4 of Guangzhou Baiyun international airport as a case study, theoretical analysis and field tests on karst treatment measures and ground-settlement control measures were conducted. Karst treatment measures and a pile support plate (PSP) structure have been proposed to support the taxiways. The effect of the system was analysed numerically method and on-site surface settlement was monitored. The maximum monitored settlement of T3 and T4 taxiway surfaces was 5.90 mm and the differential settlement was 0.12‰. The numerical results provided a similar value and did not exceed the settlement control standard for airport taxiways. The key technologies for the construction of tunnels under airport taxiways in karst areas and upper soft and lower hard strata are presented, karst disposal measures are summarised and the PSP protection system is described. The results provide reference information for similar projects.
Writers and Intellectuals on Britain and Europe, 1918-2018: An Introduction
Authors: Einhaus Ann-Marie , Shaw Kristian
Published: April 2022

Introducing a Special Collection focused on exploring the engagement of artists, writers and intellectuals with Britain’s relationship to Europe, this short essay reflects on common strands and recurring themes in such engagement across a turbulent century. It draws out parallels between three time periods covered by articles included in the collection: the inter-war period, the immediate aftermath of the Second World War, and the period from the 1970s to the EU referendum.
Taxonomical and chorological notes 14 (138–152)
Authors: Süveges Kristóf , Takács Attila , Tóth Katalin , Török Péter , Vikár József , Molnár Csaba
Published: April 2022

The present part of the series provides miscellaneous new records of 15 taxa of vascular plants from Hungary. New chorological records are provided here: Androsace maxima, Helminthia echioides and Hypericum elegans are new for the ‘Közép-Tisza-vidék’, Helminthia echioides is also new to the ‘Duna-sík’, Aphanes arvensis and Medicago rigidula are new in the ‘Hajdúság’, Bolboschoenus maritimus is new for the Putnok Hills and Sajó Valley, Draba muralis is new for the Mátra Mts, Eriochloa villosa is a new alien weed in Western Hungary, Erucastrum nasturtiifolium is new for the ‘Zagyva-völgy’ microregion, Gagea minima is new for the ‘Cserhát’, Polycarpon tetraphyllum is new to the flora of the Transdanubian Mountains, a new population of Reseda inodora has been found in the Kiskunság (Harta), Sherardia arvensis is new both for ‘Nyírség’ and ’Hajdúság’, Tordylium maxmimum is new for the ‘Marosszög’ microregion, and the rare hybrid Tragopogon ×crantzii is new for the Jászság.
Investigating opportunities for integrating methodology when teaching a life science topic (meiosis) to fourth-year pre-service teachers: A case study
Authors: Kahn Robyn Raina , Nyamupangedengu Eunice
Published: April 2022

Pre-service teachers (PSTs) are expected to effectively integrate their content knowledge with their knowledge of teaching when teaching classes after qualification. This integration can, however, be challenging for PSTs because the two components are often taught separately at teacher education institutions. This qualitative case study investigated the possibilities of integrating the teaching of the two components at a South African university educating future science teachers. Data in the form of video-recorded lectures, video-stimulated recall interviews with a teacher educator, and focus group interviews with 15 PSTs were collected. Data analysis was mainly deductive informed by the topic-specific pedagogical content knowledge conceptual framework. Many opportunities for integrating methodology were created by the teacher educator while teaching meiosis content. The study concludes that integrating methodology when teaching content courses is possible. However, the integration should include explicit discussion of the pedagogical reasoning behind the visible teaching routines.
Effects of armed conflicts on teaching and learning: Perspectives of secondary school teachers in Cameroon
Authors: Agbor Michael Ntui , Etta Mercy Aki , Etonde Hannah Mbua
Published: April 2022

The ongoing armed conflict in Cameroon has resulted in thousands of attacks on schools, yet education cannot wait for conflict to stop. This study sought to determine the effects of the ongoing armed conflict on classroom activities in operational schools in affected areas in Cameroon. Using a mixed method sequential exploratory design, qualitative data were collected from 19 teachers through open-ended questions and analysed using thematic analysis. Qualitative findings were used to design a questionnaire, administered to 652 teachers, and analysed using multiple response and the chi-square and equality of proportion test. Findings presented indicate that attendance, content delivery, safety, discipline, and assessment have been significantly hampered. However, classroom attendance was most significantly (p = .001) affected, disrupting teaching and evaluation with differing effects found across locations and school types. It was concluded that teaching and learning activities are ineffective and may result in further damaging effects-requiring more practical actions on school sites.
[RETRACTED] Alpha Active Male Enhancement v1
Authors: Douglas Morris H
Published: April 2022

[RETRACTED]

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[RETRACTED] NextGen Keto Reviews - How NextGen Keto Pills Works? Living in the 20th century is no lower than a delicate task. Numerous of us don't know about numerous effects passing across the metropolises, countries, and the world. We're just apprehensive of v1
Authors: Keto Pills Reviews Express
Published: April 2022

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QIAGEN DNeasy Power Water SOP v1
Authors: Ottesen Andrea , Kocurek Brandon
Published: April 2022

QIAGEN DNeasy PowerWater SOP Purpose: For the isolation of genomic DNA from filter water samples, inculding turbid water Introduction: The DNeasy PowerWater Kit can isolate genomic DNA from a variety of filtered water samples. Utilizing Inhibitor Removal Technology® (IRT), even water containing heavy amounts of contaminants can be processed to provide DNA of high quality and yield. The DNeasy PowerWater Kit can isolate DNA equally well from any commonly used type of filter membrane. Purified DNA is ready to use in a final elution volume of 100 μl. Principle & Procedure: The DNeasy PowerWater Kit starts with the filtration of a water sample onto a filter membrane. Filter membranes may be user supplied. The membrane is then added to our special 5 ml bead beating tube containing a unique bead mix. Rapid and thorough lysis occurs through vortexing in a specially formulated lysis buffer that enhances the isolation of microorganisms from filter membranes. After the protein and inhibitor removal steps, total genomic DNA is captured on an MB Spin Column. High-quality DNA is then washed and eluted from the MB Spin Column membrane for use in downstream applications including PCR and qPCR.
Pipeline Implementation of the Unified CORDIC Algorithm in FPGA
Authors: Peréz-Holguín Wilson Javier , Limas-Sierra Robert Alexander
Published: April 2022

This work presents a pipeline implementation of the COordinate Rotation DIgital Computer (CORDIC) algorithm in VHDL. This implementation computes both the trigonometric (sine, cosine, and arctangent of two parameters) and hyperbolic (hyperbolic sine, hyperbolic cosine, and hyperbolic arctangent) fixed-point functions. The implementation was synthesized on a Xilinx ® Zynq UltraScale + ZCU102 FPGA evaluation board, reaching an operating frequency of 297.89 MHz. The results show the proper operation of the proposed architecture, achieving relative errors of less than 1.4% for a 16-bit fixed-point representation. The VHDL implementation is easily adjustable to meet the specific requirements of each system and is available as an open-source code under a Creative Commons license.
La psicología humanista en modelos convencionales: diálogos y diferencias con la psicología positiva
Authors: Correa Ramírez Cristian
Published: April 2022

La psicología positiva suele ser presentada como un nuevo paradigma dentro de la psicología, su posicionamiento y crecimiento es evidente en términos de publicaciones académicas, sin embargo, comparte marcos de interés que la vinculan con desarrollos previos asociados a la psicología humanista. En este sentido, este artículo de reflexión teórica busca interrogar los discursos de la psicología positiva como nuevo paradigma, al tiempo que pretende explicitar los diálogos y diferencias que comparte con la psicología humanista. A nivel metodológico, bajo una lógica hermenéutica, se llevó a cabo una estrategia de búsqueda documental en torno a estas cercanías y distancias expuestas en la literatura científica alrededor de estas ramas de la disciplina. El artículo destaca cómo ambas corrientes comparten un interés por lo salutogénico con visiones epistemológicas y metodológicas distintas en sus orígenes, pero con posibilidades de diálogo en su devenir actual. Si bien se establecen y se presentan diferentes distinciones entre ambos enfoques, se concluye que el momento actual de la psicología convoca a establecer discusiones fructíferas que den lugar a un marco epistemológico más amplio en lo teórico y metodológico, albergando así algunas inquietudes y focos de interés que ambos modelos comparten.
EXPERIENCIAS Y SIGNIFICADOS DEL COMPORTAMIENTO SUICIDA EN UNIVERSITARIOS DE COLOMBIA
Authors: Vélez Perez Dartiza , Julian-Usuga Andres , Mora Orejarena Laura María , Lozano León Sandrith Gisselle , Ingold-Medina Anythia , Serrano Romero Genny Marisol
Published: April 2022

El suicidio es la segunda causa de muerte en personas entre los 15 y 29 años. Este estudio tuvo como objetivos identificar la frecuencia del comportamiento suicida en universitarios y explorar sus experiencias subjetivas. Para ello, se utilizó un diseño secuencial de dos fases. En la primera, de enfoque cuantitativo descriptivo y diseño no experimental de corte transversal, 219 estudiantes respondieron una encuesta. En la segunda, de enfoque cualitativo y alcance descriptivo-fenomenológico, seis estudiantes participaron de una entrevista semiestructurada. Se encontró que el 23.3% de los participantes han tenido ideación suicida y el 9.7% un intento suicida durante su etapauniversitaria. Del análisis cualitativo surgierontres dimensiones: significaciones adscritas aL comportamiento suicida, influencia del contexto universitario y acciones autoprotectoras.
El suicidio se significó como el último recursopara librarse de situaciones extremadamente tensionantes. Los espacios de interacción saludable y apoyo en el contexto universitario aparecen como elementos protectores ante la conducta suicida.
¿Adaptación o resistencia? Una aproximación a la subjetividad de estudiantes de psicología ecuatorianos en un contexto de protesta social
Authors: Cuenca-Flores Nerie Felman , Falcones-Veloz Kerly Elizabeth , Capella-Palacios Manuel
Published: April 2022

En Latinoamérica se registraron varias movilizaciones antineoliberales durante el 2019, siendo Ecuador uno de los países donde tuvieron lugar. Desde la mirada de la psicología crítica, el presente artículo de investigación explora discursivamente algunas actitudes de un grupo de estudiantes de psicología ante las protestas en dicho país. Estas se definieron según la comprensión de su identidad profesional, en el marco de procesos de resistencia-adaptación y de sujeción- subjetivación. Se interpretaron, mediante un análisis crítico del discurso, las diversas actitudes de los participantes ante los eventos del paro nacional. Se concluyó que existen divergencias entre perspectivas respecto al rol del psicólogo, teniendo por un lado la visión de un psicólogo “imparcial”, construida a partir de la normatividad paradigmática positivista y, por otro, aquella de estudiantes que se perciben como socialmente comprometidos, influenciados por un acercamiento más emocional a su realidad. Se interpretaron diversas posiciones en torno a la capacidad de acción considerando dos tendencias, una, hacia la resistencia en aquellos participantes que tomaron una actitud empática hacia la protesta social y, otra, hacia la adaptación en aquellos que se distanciaron de dichas manifestaciones políticas, principalmente influenciados por un discurso hegemónico de rechazo hacia la violencia.
Psicometría, subjetividad y redes sociales: el estudio del lenguaje en Facebook
Authors: Gómez Barrera Juan Camilo , Arango Tobón Mauricio Alexander
Published: April 2022

Con el uso de redes sociales y las big data, la
psicometría ha implementado estudios que buscan medir el comportamiento de los individuos a través de mecanismos digitales. La operación realizada por este tipo de trabajos consiste en generar perfiles que permitan predecir y clasificar a los sujetos. Los métodos y procedimientos de estas mediciones están basados en la correlación entre signos y huellas alojados en bases de datos y valores que se les asignan y que dan cuenta de rasgos medibles. Lo problemático de estos análisis radica en que se producen afectaciones a la subjetividad, al menos, en dos aspectos: los perfiles generados subsumen a los individuos en dividuos y las subjetividades deben acoplarse a una normalidad. El presente artículo muestra todo ello a través del caso de una medición psicométrica del uso del lenguaje en mensajes instantáneos vía Facebook.
Necropolítica y psiquiatrización de la infancia en tiempos de pandemia
Authors: Caponi Sandra
Published: April 2022

Considerando la pésima gestión de la pandemia en Brasil, el artículo cuestiona la tesis según la cual después de la infección del covid-19 deberemos convivir con un nuevo brote: el de trastornos mentales, que afectará particularmente a la infancia. Argumento que, si la lógica de la psiquiatría —hoy hegemónica— se impone, corremos el grave riesgo de que, una vez superada la crisis, debamos tener que manejar una falsa propagación de diagnósticos psiquiátricos en la infancia.
Considerando el modelo de identificación de trastornos mentales adoptado por el discurso psiquiátrico dominante, es posible prever una multiplicación de diagnósticos psiquiátricos
ambiguos y un aumento de niños tratados con psicofármacos que poseen efectos iatrogénicos perjudiciales para su desenvolvimiento.
Efectos psicológicos del proyecto de memoria histórica La guerra que no hemos visto
Authors: Rodríguez Ruiz Mariana , Zuluaga Aristizábal Marda
Published: April 2022

El artículo presenta los resultados de la investigación “Efectos psicológicos del proyecto de memoria histórica La guerra que no hemos visto”, realizado durante el año 2016 y aprobado por la Universidad EAFIT. Mediante un estudio de caso y una triangulación de entrevistas se analizan narraciones de siete participantes acerca de su vínculo con el proyecto antes, durante y después de estar en contacto con él. Se abordan tres conceptos que dan cuenta del contexto del proyecto: representaciones del conflicto armado, ‘zona gris’ y memoria. También se profundiza en los efectos psicológicos encontrados: transformación, humanización, procesos de resignificación, confianza y perdón. Al final, se presenta la importancia de este proyecto y la manera como contribuye a la reparación en el marco del conflicto colombiano y la justicia transicional.
Trabajar en turnos rotativos semanales no produce alteraciones en las funciones cognitivas superiores
Authors: Barrera-Valencia Mauricio , Puerta-Guzmán Nora
Published: April 2022

Al parecer las alteraciones en el ciclo normal del sueño, tienen a producir efectos sobre el rendimiento cognitivo. Sin embargo, no es claro si en el largo plazo los efectos de cambiar los patrones de sueño-vigilia producen cambios cognitivos significativos. El objetivo presente estudio fue comparar el rendimiento cognitivo en atención, memoria y función ejecutiva de un grupo de trabajadores que laboran realizando turnos rotativos con otro grupo que labora solo en turno fijo diurno. En su desarrollo participaron 60 adultos de sexo masculino, con edades entre 20 y 60 años. Ambos grupos se equipararon por edad, escolaridad y estrato socioeconómico. Se aplicó una batería neuropsicológica para evaluar atención, memoria y función ejecutiva en ambos grupos.  Los resultados obtenidos sugieren que las funciones cognitivas no se ven afectadas en la modalidad de turnos rotativos ni a corto ni a largo plazo las funciones cognitivas en atención, memoria y función ejecutiva, excepto en el puntaje de interferencia de la prueba Stroop, en la cual se presentó menos resistencia a la interferencia en los trabajadores que realizan turno rotativo que en los que realizan turno fijo diurno. Por otro lado, se evidenció que la modalidad de rotación de turno semanal  es más sana desde el punto de vista cognitivo, pues permite mayor descanso y, por tanto, un adecuado restablecimiento del ciclo circadiano.
RECONSTRUCTION OF FULL-THICKNESS SCALP DEFECT WITH INTEGRA AFTER ROAD TRAFFIC ACCIDENT: A CASE REPORT
Authors: Majid Luqman , Raouf Vyan , Zorab Shakhawan , Raheem Mohammed
Published: April 2022

Introduction 

Reconstruction of lacerating scalp wound after a Road Traffic accident (RTA) with a sizeable full-thickness defect can pose a challenge for the surgeon. Various options are available for scalp wound reconstruction, including skin grafts and flaps but when the defect reaches the pericranium, the options become very limited

Case Presentation 

We present the case with a sizeable full-thickness scalp defect and cranial bone abrasions after RTA. Our management plan was to cover the bone with a dermal regeneration matrix (INTEGRA). However, the challenge was the absence of the pericranium, which we overcame by using an electrical saw to abrade the bed and directly apply the (INTEGRA). It was taken very well in 19 days. The newly formed dermis was covered with a meshed split-thickness skin graft.

Discussion

We found that the combination of abrading a thin layer of an exposed skull bone after trauma with pericranial loss, direct application of dermal regeneration template (INTEGRA) and skin graft are safe and effective in managing large traumatic full-thickness scalp wounds with bare bone.

Conclusion

After four months follow up the good results of this case present a practical time-expedient operative approach to overcome the challenges faced by surgeons in dealing with sizeable traumatic scalp wounds that leave behind the unhealthy bare bone.
Design Assessment and Simulation of PCA Based Image Difference Detection and Segmentation for Satellite Images Using Machine Learning
Authors: Jat Nemi Chand , Kumar Chetan
Published: April 2022

It is possible to define the quantity of temporal effects by employing multitemporal data sets to discover changes in nature or in the status of any object based on observations taken at various points in time. It's not uncommon to come across a variety of different methods for spotting changes in data. These methods can be categorized under a single umbrella term.  There are two primary areas of study: supervised and unsupervised change detection. In this study, the goal is to identify the changes in land cover.  Covers a specific area in Kayseri using unsupervised change detection algorithms and Landsat satellite pictures from various years have been gleaned through the use of remote sensing. In the meantime, image differencing is taking place.  The method will be applied to the photographs using the image-enhancing process. In the next step, Principal Component Analysis (PCA) is employed.  The difference image will be analyzed using Component Analysis. To find out which locations have and which do not. As a first step, a procedure must be in place.  We've finished registering images one after the other. Consequently, the photos are being linked together. After then, it's back to black and white.  Three non-overlapping portions of the difference image have been created. This can be done using the principal component analysis method.  From the eigenvector space, we may get to the fundamental components. As a last point, the major feature vector space fuzzy C-Means Clustering is used to divide the component into two clusters, and then a change detection technique is carried out. As the world's population grew, farmland expansion and unplanned land encroachment intensified, resulting in uncontrolled deforestation around the globe. This project uses unsupervised learning algorithm K-means clustering. In a cost-effective manner that can be employed by officials, companies as well as private groups, to assist in fighting illicit deforestation and analysis of satellite database.
Design Simulation and Assessment of Computer Based Cancer Diagnosis Accuracy using ART 1.0 Algorithm
Authors: Agrawal Amit , Tiwari Geeta
Published: April 2022

Today Cancer is spreading heavily and become the most dangerous disease in the world. This disease causes death if not diagnoses before the major stage. Small changes or illness in the human body may transform to the cancer in the body. The main thing in this disease is it is not easily detected in its earlier stage. So this causes the aim to design a computer operated system that can make distinguish between benign (non-cancerous) and malignant (cancerous) mammogram. The proposed system helps doctors to increase the diagnosis accuracy. The above propose system shall be simulated by MATLAB. The ART 1.0 algorithm shall be studied and modified to improve the accuracy of existing ART 1.0 system. The simulation shall be done by obtaining cancer data set from UCI repository. The reason behind choosing ART algorithm because of its characteristic to work on three phases i.e., Recognition, Comparison, Search Phase.  The winning neuron is obtained by finding the dot product of input and weight vector. The neuron having largest dot product be the winner.
Understanding the Concept of BIG Data Testing, Strategies and Methods
Authors: Rahim Robby
Published: April 2022

This paper explains the concept of BIG data and the process of testing BIG data technology. There are various procedures which are used to perform testing of BIG data technology. It is to make sure that all the functions of BIG data work smoothly without getting errors. This paper will explain the concept and strategies used to perform the BIG data testing.
Architectural Study of Software Engineering, Advantages and Challenges
Authors: Jajoo Palika
Published: April 2022

In order to create software application, it is necessary to understand the concept of the software engineering. This paper will describe what is software engineering and how it is followed to deliver a software application. In this paper the architecture of the software will be discussed. There are many categories of architecture of software and patterns. For each category of architecture, there are few advantages as well as challenges in the implementation of the software.
An integrated approach to the differential diagnosis of COVID-19 syndromes and symptoms
Authors: Orlova Natalia V. , Nikiforov Vladimir V.
Published: April 2022

COVID-19 is characterized by a variety of symptoms that are not pathognomonic (hyper-/hypothermia; acute intoxication syndrome; cough; sore throat; enlargement of submandibular lymph nodes; shortness of breath; dyspeptic syndrome; neurological symptoms; ageusia and anosmia, etc.), which determines the need for differential diagnosis. COVID-19 refers to acute respiratory infections, has common transmission routes and similar symptoms, simultaneous infection with other respiratory viruses is possible.
Symptoms of intoxication require differential diagnosis with other infections, cough and shortness of breath may be manifestations of cardiovascular diseases, ageusia and anosmia occur in respiratory viral infections and neurological diseases, skin manifestations are also not specific. Laboratory and radiation diagnostics in COVID-19 reveals frequent changes, which, however, are also not pathognomonic. The article discusses diseases that have similar manifestations to COVID-19.
The greatest difficulties in differential diagnosis are caused by combined conditions ― the development of COVID-19 in patients with cardiovascular diseases, cancer patients, with chronic diseases of the respiratory system and others. Crucial in the differential diagnosis is the conduct of a specific examination ― the determination of the SARS-CoV-2 antigen in smears from the nasopharynx and oropharynx by immunochemical methods.
A comparison of pretreatment with lignocaine versus dexmedetomidine in prevention of etomidate induced myoclonus- A randomised comparative trial
Authors: Khalik Mohd , Swaminathan Vigneshwaran , Arora Neeharika , Ahluwalia Pallavi , Gupta Akash , Garg Ankur
Published: April 2022

Etomidate is a short-acting non-barbiturate intravenous anesthetic with rapid induction and rapid awakening. It is frequently utilized in clinical practice, especially for patients with an unstable cardiovascular system, due to its minimal influence on hemodynamics and respiratory depression. However, Etomidate might cause side effects during anaesthetic induction, such as injection discomfort, phlebitis, hemolysis, and myoclonus. This study was, therefore, conducted in order to compare the pre-treatment with lignocaine versus dexmedetomidine in deterrence of myoclonus resulting from Etomidate.

60 patients were allocated randomly into two study groups. Each group comprising 30 patients. Patients in GroupI received injection Lignocaine (1 mg/kg)and Group II received injection Dexmedetomidine (0.5μg/kg) in 10 ml of normal saline over 10 min followed by Etomidate injection (0.3 mg/kg) over 30 s. Patients were observed for 2 minutes for occurrence of myoclonus and the intensity and time of occurrence was noted by a person blinded to the drug used.

In our study, 90% patients were myoclonus grade zero, followed by 6.7%, 3.3% and no one of myoclonus grade one, two and three in dexmedetomidine group at 1 min. 60.0%, 10.0%, 13.3% and 16.7% patients had grade zero, one, two, three of myoclonus respectively in lignocaine group at 1 min. 80.0% patients were myoclonus grade zero, followed by 13.3%, 3.3%, 3.3% of patients had myoclonus grade one, two, three respectively in dexmedetomidine group at 2mins. 53.3%, 10.0%, 16.7%, 20.0% patients were myoclonus grade zero, one, two and three respectively in lignocaine group at 2mins. On the whole 46.7% patients in lignocaine group developed Myoclonus; but 20.0% in dexmedetomidine group shows the myoclonus.

We conclude that the prevalence of Etomidate-induced myoclonus was significantly decreased in patients who were pre-treated with dexmedetomidine in comparison with lignocaine.
Comparative analysis of intrathecal low dose dexmedetomidine and clonidine as an adjuvant to bupivacaine in gynaecological surgeries
Authors: Dangi Vimal , Gour Vinayak , Verma Sushil Chand
Published: April 2022

: Adjuvants play an important role in the intraoperative and post-operative analgesia. Spinal Anaesthesia is very common among gynaecological surgeries. Bupivacaine is the most common drug used for in gynaecological surgeries. So, addition of Clonidine or Dexmedetomidine as adjuvant can decrease post-operative analgesia.

A randomised controlled trial was done to compare the two groups of Dexmedetomidine and Clonidine along with Bupivacaine. A total of 100 patients were divided into 50 each randomly into two groups and intrathecal medication were given as per the group allotted.

: Time of onset of sensory and motor block was much faster in Dexmedetomidine group than Clonidine group. The two segment regression was slower in Dexmedetomidine group compared to Clonidine group. The time taken for two segment regression was 590 ±15 minutes and 361± 18 minutes respectively and was found to be statistically significantOnset of motor block according to Bromage grade 3 was 4.3 ±1.2 minutes and 5.14 ±1.4 among Dexmedetomidine and Clonidine group respectively. The mean values of mean arterial pressures and heart rate were similar throughout the inter operative and post-operative time duration.

Planning and managing postoperative analgesia starts from pre anaesthetic evaluation. So Dexmedetomidine when used along with Bupivacaine intrathecally has better postoperative pain relief as compared with Clonidine and Bupivacaine.
Effects of clonidine premedication on perioperative hemodynamic response, anesthetic requirements and postoperative analgesia for patients undergoing laparoscopic gynecological surgeries: A randomized study
Authors: Abraham Liya , J Ramki
Published: April 2022

The creation of carbon dioxide (CO) pneumoperitoneum is frequent in laparoscopy, but has significant effect on the cardiopulmonary function of the patient. Clonidine by its central sympatholytic action reduces perioperative hemodynamic instability and has several advantages in the postoperative period, hence we consider it to be an effective premedication to contain the stress response to intubation and laparoscopy.

With informed consent, 56 patients scheduled for elective laparoscopic gynecological surgeries under general anesthesia were randomly allocated into two groups to receive premedication with either oral Clonidine 100 µg (Group I, n = 28) or Vitamin C as placebo (Group II, n = 28) 90 minutes prior to induction. A balanced general anesthesia was used to manage these patients. Hemodynamic parameters, Sevoflurane concentration, pain and sedation scores, time to request analgesics, 24hr cumulative analgesic requirements and adverse effects between the two groups were collected as data and compared using Two sample t-test and Fisher’s exact test.

When compared to the control group, oral Clonidine was found to be considerably superior significantly (p =0.00) in terms of maintaining stable hemodynamics (i.e. In group I, Mean HR ranged from 76.11±12.21 to 94.57±13.75, while in group II, it ranged from 79.04±7.11 to 112.00±12.75 and MAP ranged from 83.07±6.50 to 93.64±14.09 in group I, while in group II, it ranged from 88.04±9.03 to 116.14±13.23), having a Sevoflurane sparing effect and having a longer time (6.5 ± 1.6 hours) between the first request for analgesia postoperatively. In patients undergoing laparoscopic gynecological surgeries, administration of oral Clonidine 100µg as a premedication improves perioperative hemodynamic stability and reduces the intraoperative anesthetic and post-operative analgesic requirements.
Perioperative management of congenital hyperinsulinism (CHI)
Authors: Kaushik Parul , Hayaran Nitin , Goel Ishan
Published: April 2022

Congenital hyperinsulinism (CHI) is one of the common causes of recurrent or persistent hypoglycemia. It is marked by islet cell dysfunction leading to insufficient suppression of insulin secretion in the presence of serious hypoglycemia. CHI is genetic in origin, where children present with symptoms of hypoglycemia like irritability, listlessness, nausea, vomiting, tachypnoea, seizure or with long-term sequelae such as developmental delay and focal neurologic deficits, thus making it a medical emergency. Surgical management becomes essential in most of the cases with challenging perioperative management. We successfully managed three such cases with favorable postoperative outcome.
"Triangle" China – USA – Russia and Africa
Authors: Batyuk Vladimir
Published: April 2022

The growing interest of the United States, China and the Russian Federation in Africa in the recent years seems completely understandable. The natural resources of the Black continent, the high rates of economic growth of a number of African countries - all this cannot but attract the attention of Moscow, Beijing and Washington. The leaders of the three great Powers reasonably believe that the place and the role of theirs countries in the international arena will largely be determined by the ability to establish mutually beneficial cooperation with the leading regions of the planet, including the African continent. Currently, Russia's influence in Africa is significantly inferior to the American and Chinese presence on the continent, but in recent years Moscow has been making considerable efforts to restore its positions there, which it had during the Cold War.
The Growing Ineffectiveness of US Federal Stimulus Programs
Authors: Vasiliev Vladimir
Published: April 2022

The effectiveness of the anticrisis programs of the US federal government to bring the American economy out of the 2020 crisis is analyzed. It is noted that the 2020 crisis was unprecedented in its scale and causes of occurrence, which practically did not occur in American economic history in the period after the end of World War II. The unusual nature of the crisis found its expression in the policy of introducing lockdowns as the main tool in the fight against the coronavirus pandemic, which led to unprecedented drops in the reduction and increase in real GDP over the course of six months. From the very beginning of the implementation of anticrisis fiscal programs, they were characterized by inefficiency in spending budget funds, which was due to several reasons. The main one was political, expressing in the fact that the crisis fell on the year of the Presidential elections. The Republican administration of D. Trump, who is in power, virtualy wasted budget funds «from helicopter» for the speedy overcoming of the crisis, the volume of which significantly exceeded the magnitude of the fall in real GDP. As a result, most of the funds went to support the incomes and, accordingly, the consumer demand of families, individuals, small and medium-sized businesses that received “free” funds that did not require reciprocal labor efforts on the part of  payments and benefits’ recipients. In the US economy, a syndrome of unprecedented cash pumping has formed, which by the beginning of 2021 naturally led to an “inflationary overheating” of the economy. Gradually, by the beginning of 2022, inflation, measured by the consumer price index, actually got out of control, which led the Federal Reserve System (FRS) to the decision to switch to a policy of raising the federal fund rate in 2022, which will certainly complicate the US exit to trajectory of sustainable economic growth. 
The Democratic administration of J. Biden, which took office in January 2021, put forward an ambitious program to overcome the crisis, called "Build Back Better." Initially, the total cost of the program was estimated at  $7.8 trln, however, as the program began to acquire legislative status, its cost started decrease sharply precisely because the negative elements of the program, which are reflected in the huge growth of budget deficits and the gross debt pyramid, began to clearly outweigh the costs associated with accelerating economic growth and increasing employment. As a result, in 2021, the US Congress refused to accept those components of the Build Back Better   program, which were aimed for a sharp expansion of the block of social programs, mainly in the field of health and education, as well as combating climate change and preserving environmental quality. A year after the publication of the Build Back Better program, a fairly stable stereotype of its public rejection has formed in American society as causing more harm to the American economy than providing tangible socio-economic benefits.
Spatio-Temporal Analysis of Dry Spell for Agricultural Decision Support in North-Central Nigeria
Authors: Usman Ahmad Aboki , Mamman Mustapha Baba Aji
Published: April 2022

This study aims to examine the trend and geospatial variability of dry spells for agricultural decision support. Daily precipitation data spanning from 1981 to 2020 was analyzed using the Instat climatic software to calculate rainfall onset, onset plus 50, length of the growing season, cessation, dry spell 1, and dry spell 2. Multiple regression analysis was used to analyze the trend in maximum dry spell length. Kriging method in Surfer 13 software was used to interpolate and plot dry spell distribution into a spatial grid in the study region. Based on records of daily rainfall data obtained from eight meteorological stations, the spatial distribution of dry spells was generated for the beginning and end of the season. The results obtained revealed a decreasing trend for maximum dry spell length during onset, meaning its recurrence is declining except in Bida, Minna, and Jos that show a positive trend. While the trend for maximum dry spell length at end of the season appears to be positive except for Lafia and Minna that shows a negative trend. The result further indicates that dry spells towards the end of the season are more severe than dry spells at beginning of the season.
EFL Teachers' Beliefs and ICT Integration Practices During Distance Learning: Employing Replacement, Amplification, and Transformation Framework
Authors: Lestarina Anggi Purwa , Nurkamto Joko Nurkamto , Ngadiso Ngadiso Ngadiso
Published: April 2022

Technology is successfully integrated when technology makes learning effective, efficient, and creative. It cannot be denied that technology positively contributes to teaching and learning. Moreover, in the current pandemic conditions where the learning process must be carried out remotely, technology helps this teaching and learning process more accessible. The objective of the study is to see the EFL teachers’ beliefs and ICT integration practices during distance learning. This study investigates teachers' beliefs of ICT integration based on the current theory and situation. The researchers used a qualitative approach in this case study; three EFL teachers were interviewed and observed. The finding of the study is all EFL teachers had positive beliefs about ICT use for teaching and learning and student-centered belief orientation for pedagogical belief. One of three had low-self efficacy to utilize ICT. ICT was integrated for effective and efficient learning, which means teachers' level of ICT integration was Amplification based on the RAT (Replacement, Amplification, and Transformation) framework. However, overall, teachers' beliefs orientation were positive belief about ICT integration, high self-efficacy belief, student-centered belief. Still, they could not reach the high level of ICT integration linked to creativity in teaching. They also faced some barriers in integrating ICT, such as students' engagement and the learning in the distance still incomplete. They missed the motivation or stimulation stage for their students and the students' learning process was lack of speaking and listening enhancement activities. Additional research should address more people as data objects to corroborate research results.Keywords: ICT integration, RAT framework, Teachers' Beliefs, Self-efficacy beliefs, Pedagogical beliefs