bluuebunny/crossref_metadata_2025 huggingface dataset:
Continuation of Teletherapy After the COVID-19 Pandemic: Survey Study of Licensed Mental Health Professionals (Preprint)
Authors: Gangamma Rashmi , Walia Bhavneet , Luke Melissa , Lucena Claudine
Published: July 2021

BACKGROUND

The use of teletherapy has exponentially increased in the context of the ongoing COVID-19 pandemic. Studies on teletherapy documented substantial benefits of accessibility and convenience even before the start of the pandemic. Although recent studies show that this modality of therapy delivery is here to stay, few have studied who will most benefit from this trend.

OBJECTIVE

In this paper, we report predictors of continued teletherapy usage in a sample of licensed mental health professionals in the United States during a time period when pandemic-related restrictions began diminishing. As such, it is one of the first studies to examine factors related to continued benefits of teletherapy postpandemic.

METHODS

Participation from licensed mental health professionals was sought on listservs of national organizations of multiple mental health organizations. Data were collected via an anonymous link to a survey on Qualtrics between January 2021 and April 2021. Participants responded to questions on therapist demographics, practice setting, experiences of shifting to teletherapy, perspectives on continued use of teletherapy, and their client characteristics. Findings related to client characteristics that predicted continued teletherapy usage are presented here.

RESULTS

A total of 186 individuals consented to participate in the survey, with a final sample of 114 with complete data. A majority of participants identified as female (92/114, 80.7%), White (94/114, 82.5%), and having a master's degree (75/114, 65.5%) from a nationally accredited program (106/114, 93%). Data were analyzed using heteroskedastic regression modeling with client-related factors as predictors. Two models were run with and without distance travelled by clients as a control variable. Model estimates from both models showed that continued use of teletherapy postpandemic was predicted by the following factors: higher percentage of clients from rural areas, younger and older adult clients, clients with Medicare, and clients with marginalized gender and religious/spiritual identities. Significantly, having a higher percentage of clients from lower socioeconomic status, a higher percentage of those with Medicaid coverage, and a higher percentage of couples and families as clients predicted decreased use of teletherapy postpandemic.

CONCLUSIONS

Findings from the study suggest that while some groups of clients are more likely to continue to receive benefits of teletherapy, vulnerable groups such as those in lower socioeconomic conditions, Medicaid beneficiaries, and those who seek couple and family therapy may be less likely to be served by it. These differences point to a need to address factors driving telehealth care disparities such as access to technology, housing, and childcare issues, as well as the need for continued training for licensed professionals.
The Use of Cremation Data for Timely Mortality Surveillance During the COVID-19 Pandemic in Ontario, Canada: Validation Study (Preprint)
Authors: Postill Gemma , Murray Regan , Wilton Andrew S , Wells Richard A , Sirbu Renee , Daley Mark J , Rosella Laura
Published: July 2021

BACKGROUND

Early estimates of excess mortality are crucial for understanding the impact of COVID-19. However, there is a lag of several months in the reporting of vital statistics mortality data for many jurisdictions, including across Canada. In Ontario, a Canadian province, certification by a coroner is required before cremation can occur, creating real-time mortality data that encompasses the majority of deaths within the province.

OBJECTIVE

This study aimed to validate the use of cremation data as a timely surveillance tool for all-cause mortality during a public health emergency in a jurisdiction with delays in vital statistics data. Specifically, this study aimed to validate this surveillance tool by determining the stability, timeliness, and robustness of its real-time estimation of all-cause mortality.

METHODS

Cremation records from January 2020 until April 2021 were compared to the historical records from 2017 to 2019, grouped according to week, age, sex, and whether COVID-19 was the cause of death. Cremation data were compared to Ontario’s provisional vital statistics mortality data released by Statistics Canada. The 2020 and 2021 records were then compared to previous years (2017-2019) to determine whether there was excess mortality within various age groups and whether deaths attributed to COVID-19 accounted for the entirety of the excess mortality.

RESULTS

Between 2017 and 2019, cremations were performed for 67.4% (95% CI 67.3%-67.5%) of deaths. The proportion of cremated deaths remained stable throughout 2020, even within age and sex categories. Cremation records are 99% complete within 3 weeks of the date of death, which precedes the compilation of vital statistics data by several months. Consequently, during the first wave (from April to June 2020), cremation records detected a 16.9% increase (95% CI 14.6%-19.3%) in all-cause mortality, a finding that was confirmed several months later with cremation data.

CONCLUSIONS

The percentage of Ontarians cremated and the completion of cremation data several months before vital statistics did not change meaningfully during the COVID-19 pandemic period, establishing that the pandemic did not significantly alter cremation practices. Cremation data can be used to accurately estimate all-cause mortality in near real-time, particularly when real-time mortality estimates are needed to inform policy decisions for public health measures. The accuracy of this excess mortality estimation was confirmed by comparing it with official vital statistics data. These findings demonstrate the utility of cremation data as a complementary data source for timely mortality information during public health emergencies.
Preparation and Characterization of Sulfonated Carbon Cryogel Doped Zinc as a Catalyst for Glucose Ethanolysis to Ethyl Levulinate
Authors: Zainol Muzakkir Mohammad , Roslan Mohamad Nor Fitri , Asmadi Mohd , Amin Nor Aishah Saidina
Published: July 2021

In this study, sulfonated carbon cryogel (CC) doped with zinc was prepared and used as a solid catalyst. Carbon cryogel was prepared by mixing urea and furfural, freeze-drying, and calcination. The CC was then sulfonated and impregnated with zinc (II) nitrate for ethyl levulinate production from ethanolysis of glucose. Experiment results showed that different types of catalyst prepared from CC precursor had different catalytic effects on the ethanolysis of glucose. Sulfonated carbon cryogel doped with zinc (SCC-Zn) which prepared at a calcination temperature of 300 °C showed better performance as a catalyst for the ethanolysis reaction of glucose. In addition, the 10 wt.% of Zn was recommended as optimum loading for the impregnation on the catalyst. The ethyl levulinate yield of 19.6 mol% was obtained at 180 °C for 6 h with 0.15 g catalyst loading and 0.4 g of glucose feed. The selected SCC-Zn catalyst was further characterized by using FTIR, TGA XRD, and SEM-EDX to evaluate its physical and chemical properties as a catalyst.
Stepwise Methanolysis of Waste Cooking Oil Using Immobilized Thermomyces lanuginose Lipase within Ultrasonic-assisted Condition
Authors: Abdul Manab Nur Sabrina , Veny Harumi , Gusniah Azianna , Sulaiman Sarina , Aziz Noorhaliza
Published: July 2021

Biodiesel or fatty acid methyl ester is a fuel derived from vegetable oil and animal fat. In this study, biodiesel is produced from transesterification of waste cooking oil and methanol (methanolysis), using immobilized Thermomyces lanuginose (TLIM) within ultrasonic-assisted conditions. The enzymatic transesterification is used due to environmental concerns and also the high yield of biodiesel. The limitations in the mass transfer rate of the product and longer reaction time have drawn attention to more efficient technology. One of them is ultrasonic-assisted to reduce reaction time and increase the catalytic activity of the enzyme. Various parameters have been examined in this study, such as reaction time, methanol to oil ratio, the effect of temperatures, and temperature dependency of immobilized Thermomyces lanuginose (TLIM). The highest biodiesel yield of 69.3% was obtained after 6 hours of reaction at a temperature of 35°C and using three step-wise addition of methanol to oil ratio 3:1. Our study showed that the TLIM is sensitive to methanol to oil molar ratio above 1:1. Further research on the temperature dependence found that the TLIM activation energy in the reaction is 11.9 kcal/mol, which is within activation energy for an enzymatic reaction.
Nanocellulose Production from Empty Palm Oil Fruit Bunches (EPOFB) Using Hydrolysis Followed by Freeze Drying
Authors: Hidayatulloh Irwan , Widyanti Emmanuela Maria , Kusumawati Endang , Elizabeth Lidya
Published: July 2021

Empty palm oil fruit bunches (EPOFB) are lignocellulose which is abundantly available in Indonesia. EPOFB has big potential as raw materials to substitute wood in nanocellulose manufacture. The production of nanocellulose from EOPFB consists of various stages, such as preparation by grinding and sizing, α-cellulose isolation, acid hydrolysis, and freeze-drying. α-cellulose isolate from POEFB through delignification using 17.5% NaOH (w / v) at 80oC for 30 minutes and bleaching using 10% H2O2 (v / v) at 70oC for 15 minutes. The bleached cellulose was then hydrolyzed by acid hydrolysis process using 64% H2SO4 for 45 minutes with temperature variations to determine the effect of temperature on the size of nanocellulose. Obtained nanocellulose then dried with the freeze-drying method at a temperature of 50oC for 6 hours. The nanocellulose morphology was characterized using SEM analysis, and FTIR analysis was done to determine the presence of cellulose and lignin.  The smallest average diameter obtained at 50oC temperature is 86.8 nm with a 51.5 – 66.5 nm distribution range.
Drying Kinetics and Modelling of Convective Drying of Kedondong Fruit
Authors: Ee Cheak Theng , Khaw Yee Jian , Hii Ching Lik , Chiang Choon Lai , Djaeni Mohamad
Published: July 2021

Kedondong is an underutilized fruit cultivated in a small scale in Malaysia and it contains nutrients that can be preserved through drying. The dried product can be sold as a premium fruit snack that could generate revenue for the producer. We studied the drying of peeled and unpeeled kedondong fruits using hot air (60-80°C). This study aims to investigate the drying kinetics (drying rates and effective diffusivities) of kedondong fruits and model the drying curves using thin layer models. Ten thin layer models were employed and solved using non-linear regression. Drying kinetics showed that only falling rate periods were observed, which implied that internal diffusion was the dominant mechanism for moisture release. Mathematical models showed that Modified Hii et al. (I) and (II) models were able to predict the drying curve well with the highest R2 (0.9992-0.9999), the lowest RMSE (8.0 x 10-4 - 2.5 x 10-3) and the lowest χ2 (4.0 ×10-5 - 2.0 x 10-4). Peeled  samples showed higher effective diffusivities (average 3.2 x 10-11 m2/s)  than unpeeled samples (average 2.7 x 10-11 m2/s). The activation energy was lower in peeled samples (25.8 kJ/mol) as moisture diffusion could occur more easily than unpeeled samples (32.1 kJ/mol). Results from this study provide kinetic information that can be used in scaling up of dryer and optimizing dryer performances.
The Effect of Reaction Time and Temperature on the Synthesis of Methyl Ester Sulfonate Surfactant from Palm Oil as a Feedstock using Microwave-Assisted Heating
Authors: Qadariyah Lailatul , Sahila Sahiba , Mahfud Mahfud
Published: July 2021

Methyl ester sulfonate is an anionic surfactant that can be synthesized from palm oil as a raw material with the addition of sodium bisulfite and calcium oxide catalyst through transesterification and sulfonation process using microwave-assisted heating. The effect of microwave-assisted heating in the transesterification-sulfonation process was investigated in this study. The transesterification process was carried out using a microwave power of 300 watts for 10 minutes with an addition of a KOH catalyst of 1%. The transesterification process gave a result of palm oil methyl ester with a yield of up to 98% and density of 0.8546 gr/ml, and kinematic viscosity of 3.19 cSt. The sulfonation process is carried out using palm oil methyl ester and sodium bisulfite with a mole ratio of 1:3 and calcium oxide catalyst of 1.5% with the microwave power of 300 watts while varying the sulfonation time and temperature. The physicochemical properties of methyl ester sulfonate were analyzed, and the sulfonate group was characterized using FTIR. The optimum condition gave a yield of up to 98.68%, the density of 0.8657 gr/ml, viscosity of 3.75 cSt, pH of 2.12, and surface tension of up to 27.34 dyne/cm at a temperature of 100oC and sulfonation time of 40 minutes.
Mathematical Model for Water Flooding and HPAM Polymer Flooding in Enhanced Oil Recovery
Authors: Yuliansyah Ahmad Tawfiequrahman , Murachman Bardi , Purwono Suryo
Published: July 2021

The need for energy, especially the petroleum-based one, is steadily increasing along with population growth and technological advancement. Meanwhile, oil exploitation from oil reservoirs using primary and secondary techniques can only obtain about 30%-50 % out of the original oil in place. Enhanced Oil Recovery (EOR) is a method for increasing oil recovery from a reservoir by injecting materials that are not found in the reservoir, such as surfactant, polymer, etc. This research aims to develop a mathematical model representing two-phase flow through porous media in the EOR process. This model was extended from mass balance and fluid flow in porous media equations. The reliability of the model was then validated by water flooding and polymer flooding experiment. A porous media, constituted by a silica sand pack, was saturated with 2 % brine and sequentially flooded with HPAM polymer solution at various concentrations (5,000-15,000 ppm). The volume of the oil coming out from the media at any time intervals was measured. Validation of the model was carried out by optimizing the model parameters to obtain the best curve-fitting on the plot of the percentage of cumulative recovered oil against time. The results showed that the proposed mathematical model was reliable enough to express both water and polymer-flooding processes.
Kinetics Study of Paracetamol Production from Para-Aminophenol and Acetic Anhydride
Authors: Kurnianto Rifki Wahyu , Fahrurrozi Muhammad , Ismail Hilda , Lukitaningsih Raden Rara Endang , Nugraha Indah Tri , Pudjono Pudjono , Rochmadi Rochmadi , Sudarmanto Ari , Susidarti Ratna Asmah
Published: July 2021

In the last decade, Indonesia intensifies the efforts to reduce pharmaceutical imports. One of the initiatives is establishing a paracetamol production facility to start operating in 2024. Kinetics study is needed as a basis to design the paracetamol reactor. This study investigated the optimal temperature, reactant mole ratio, and agitation speed in the reactor for paracetamol production. In this study, aqueous solution of para-aminophenol was reacted with acetic anhydride. The mole ratio of para-aminophenol to acetic anhydride was varied to 1:1, 1:1.2, 1:1.5, and 1:2 while the temperature was varied to 80 °C, 90 °C, and 110 °C. However, due to uncontrolled heat of the reaction and limitation of the mixture’s boiling point, the actual reaction temperatures were 86 °C, 90 °C, and 108 °C. In addition, the agitation speed of 250 RPM and 350 RPM were also studied. Thin layer chromatography (TLC) and densitometry were used to determine the concentration of paracetamol in the reacting mixture. The optimum temperature, reactant mole ratio, and agitation speed in this study were 108 °C, 1:1.5, and 350 RPM, respectively. In addition, a reaction performed under those operating parameters gave the reaction rate constant of 1.95 L mol-1 min-1.Keywords: acetic anhydride; kinetics; para-aminophenol; paracetamol; pharmaceutical industry A B S T R A KDalam sepuluh tahun terakhir ini, Indonesia bertekad mengurangi impor bahan baku farmasi. Salah satu upaya yang dilakukan adalah membangun fasilitas produksi parasetamol yang akan mulai beroperasi pada tahun 2024. Studi kinetika diperlukan sebagai dasar perancangan reaktor parasetamol. Oleh karena itu, penelitian ini mengkaji kondisi operasi optimal pada reaksi produksi parasetamol yang akan dibutuhkan sebagai dasar perancangan pabrik. Pada percobaan ini, para-aminofenol direaksikan dengan anhidrida asetat dengan media air. Rasio mol para-aminofenol terhadap asetat anhidrida divariasikan 1:1 1:1,2, 1:1,5, dan 1:2 sedangkan temperatur divariasikan 80 °C, 90 °C, dan 110 °C. Akan tetapi, karena panas reaksi yang tidak dikontrol dan batasan berupa titik didih dari campuran reaksi, temperatur aktual reaksi menjadi 86 °C, 90 °C, dan 108 °C. Selain itu, kecepatan putaran pengadukan juga divariasikan pada angka 250 RPM dan 350 RPM. Kromatografi lapis tipis (KLT) dan densitometri digunakan untuk menentukan konsentrasi parasetamol dalam campuran reaksi. Temperatur, rasio mol reaktan, dan kecepatan putaran pengadukan yang optimum pada penelitian ini masing-masing adalah 110 °C, 1:1,5, dan 350 RPM. Selain itu, reaksi yang dilakukan dengan kondisi operasi tersebut menghasilkan konstanta laju reaksi 1,95 L mol-1 menit-1.Kata kunci: anhidrida asetat, industri farmasi, kinetika, para-aminofenol, parasetamol
Patterns of Geographical Mobility of Researchers from Six Western Balkan Countries in Regional and European Mobility Based Training Programmes
Authors:   ZSI - Centre for Social Innovation, Schuch Klaus
Published: July 2021

The aim of this paper is to analyse the mobility of researchers from the six Western Balkan Countries, Albania, Bosnia and Herzego-vina, Kosovo*1, Montenegro, North Macedonia, and Serbia (abbr. WB6) within structured regional and European mobility programmes. We want to identify geographical patterns with a view on mobility-based training from the WB6 region to the EU, but also within the WB6 region. The following structured regional European programmes provide the basis for this comparative analysis • CEEPUS • ERASMUS + • Marie Skłodowska-Curie Actions (MSCA) • COST
РЕНТГЕНОВСКИЙ КОНТРОЛЬ ЭЛЕКТРОННОЙ КОМПОНЕНТНОЙ БАЗЫ
Authors: Алыков А. , Корбанкова Т. , Кулибаба А. , Сашов А. , Суконкин М.
Published: July 2021

Рентгеновский контроль внутренней структуры электронных компонентов является перспективным методом диагностического неразрушающего контроля для выявления потенциально ненадежных или обладающих признаками контрафакта изделий. Эффективность метода рассмотрена на примере испытаний танталовых чип-конденсаторов.
РЕЗИСТОРЫ – ОСНОВНЫЕ ТИПЫ И ХАРАКТЕРИСТИКИ. Часть 2
Authors: Горбачёв В. , Кочемасов В.
Published: July 2021

Рассмотрены резисторы различных типов. Приведена информация об особенностях, характеристиках и технологиях производства таких компонентов.
Los Rodeos de burros
Authors: Cladera Jorge Luis
Published: July 2021

Through the analysis of first-hand ethnographic material and its discussion with certain documentary sources and with contemporary historiographic advances, we study a practice of collective work that is still in force in the 21st century among the rural communities of Puna and Quebrada regions, in the province of Jujuy: the rodeos de burros (donkey rodeos). Three aspects of this practice are addressed: firstly, the conceptual and symbolic specificities that asinine cattle acquire in the local ontological system. Secondly, the system of collective work organization that is displayed in the activity of rodeos, thus identifying two different mechanisms of social cooperation and territorial coordination in contemporary practices. Finally, the mutual enchainments of these practices, thus producing different chains of supra-community regional identity. Through the approach of two documentary sources from the 19th century, we study how these three characteristics acquired their current form as a mechanism for the reordering of collective identities and territories in the context of the ethnic and juridical de-structuring suffered by the indocolonial communities in the face of the advances of the liberal state system.
Anomalías y mecanismos de transporte de mercurio en un sistema hidrotermal asociado a fallas normales en Araró, Michoacán (occidente de México)
Authors: Pérez-Martínez Isabel , Villanueva-Estrada Ruth Esther , García-Martínez Rocío , Rodríguez-Díaz Augusto , Canet Carles
Published: July 2021

En este trabajo se infieren los mecanismos de transporte y movilidad del mercurio en el sistema geotérmico Araró-Simirao, que se asocian a un sistema de fallas de tipo normal y orientación general NE-SW, a través de la modelación hidrogeoquímica del Hg en agua y suelos y su relación con la concentración de Hg en el aire. Se realizó un muestreo de agua termal y suelos, y se comparó con las emanaciones de gases de mercurio elemental. Las especies predominantes de Hg en agua son Hg0(ac), HgCl2 y HgCl3-, aunque la abundancia de Hg0 (ac) es menor con respecto a Hg2+. En suelo se encontraron minerales de alteración hidrotermal como barita y partículas con contenidos de Hg. De forma general, se deduce que los procesos geoquímicos que se llevan a cabo para el transporte de Hg entre los compartimentos ambientales agua, suelo y atmósfera son: volatilización, oxidación, complejación y depósito. El sistema hidrotermal a profundidad favorece el transporte de mercurio elemental en estado gaseoso, de probable origen magmático, hacia la superficie por las zonas de mayor permeabilidad, como es la falla Araró-Simirao; en su ascenso interacciona con el acuífero sub-superficial, enriqueciéndolo en Hg y formando complejos clorurados que son transportados en el medio acuoso. Al descargarse a la superficie el agua termal enriquecida en Hg, éste se volatiliza como Hg0(g) y permanece en la atmósfera o puede depositarse en los suelos aledaños a los manantiales, adhiriéndose a partículas de materia orgánica o arcillas y formando aureolas de anomalías de Hg en superficie. De acuerdo con la distribución espacial de estas aureolas, la zona más cercana a los fluidos geotérmicos (ascenso vertical de los gases) es la parte sur del sistema.
Conductas sexuales de riesgo para embarazos no deseados e infecciones de transmisión sexual en estudiantes universitarios
Authors: Tapia-Martínez H. , Hernández-Falcón J. , Pérez-Cabrera I. , Jiménez-Mendoza A.
Published: July 2021

Introducción: Los adolescentes como grupo vulnerable al tratar de satisfacer su sexualidad se exponen a conductas sexuales de riesgo (CSR) que contribuyen al incremento de Embarazos No Deseados (END) e Infecciones de Transmisión Sexual (ITS).

Objetivo: Describir las conductas de riesgo sexual en jóvenes universitarios de la Escuela Nacional de Enfermería y Obstetricia, Universidad Nacional Autónoma de México

Métodos: Estudio cuantitativo, descriptivo, transversal y correlacional; población, 580 estudiantes de primer semestre (febrero-junio 2017); muestra, 144 sujetos elegidos al azar; análisis con estadística descriptiva e inferencial; la participación de los estudiantes fue anónima, voluntaria y los datos totalmente confidenciales.

Resultados: 78% fueron mujeres y 72% con edades de 18-19 años; presencia de CSR: cuatro de cada cinco han tenido vida sexual; 80% 2-3 o más veces; 81% sexo sin protección, 48% 2 o más veces; 60% uso de anticonceptivos naturales, 35% dos o más ocasiones; 50% sexo bajo la ingestión de alcohol o drogas, 43% una, dos o más veces y; 39% errores en el uso de métodos anticonceptivos, 11% dos o más ocasiones. Existe una correlación significativa entre la actividad sexual y la experiencia con anticonceptivos, así como de actividad sexual con la conducta sexual en condiciones de riesgo.

Discusión y Conclusiones: Los resultados coinciden con estudios previos. Resulta importante identificar las CSR en los estudiantes universitarios para priorizar estrategias de salud sexual. Los profesionales de enfermería responsables de la Consejería Sexual tienen un rol fundamental en la educación sexual.
Sentido de Coherencia asociado con los Eventos Estresantes de la Vida en adultos mayores
Authors: Salazar-Moreno C.A. , Alonso-Castillo M.M. , Guzmán-Facundo F.R. , López-García K.S.
Published: July 2021

Introducción: Los Adultos Mayores (AM) se consideran una población vulnerable debido a la experiencia constante de Eventos Estresantes de la Vida (EEV), es decir, acontecimientos que generan angustia, preocupación y mortificación en el AM, los cuales al no ser resueltos pueden derivar en una problemática de salud de mayor complejidad. La respuesta a este fenómeno puede estar en el Modelo Salutogénico y su constructo principal el Sentido de Coherencia (SOC por sus siglas en inglés), el cual permite al individuo hacer frente al estrés y alcanzar la salud; sin embargo, aún no hay un consenso respecto al efecto del SOC sobre los EEV en los AM.

Objetivo: Conocer la relación entre los EEV y el SOC en AM del norte de México.

Método: Se realizó un estudio descriptivo correlacional, con un muestreo probabilístico en 108 AM. Los instrumentos utilizados fueron el Inventario de Estrés en la Vida de Adultos Mayores y el Cuestionario de Orientación Hacia la Vida (SOC-13).

Resultados: 77.8% pertenece al sexo femenino, los eventos más experimentados en los últimos doce meses fueron el deterioro de la memoria (54.6%) y la presencia de una lesión o enfermedad (50%). El Modelo de Regresión Simple reveló que el SOC fue predictor negativo de los EEV (β = -.652, p = .001).

Conclusión: El SOC podría ayudar al AM a comprender, manejar y dar significado a los EEV que experimenta y de esta forma percibir su entorno como menos amenazante.
¿Dependencia bicéfala o autonomía? América Latina en el espacio de la movilidad estudiantil internacional
Authors: Montoya Víctor
Published: July 2021

Se propone en este artículo analizar la movilidad estudiantil internacional latinoamericana a partir de un marco teórico que articula la teoría de la dependencia y el concepto de campo de Bourdieu. Se realiza un análisis factorial de la correspondencia de la movilidad estudiantil internacional para describir ese espacio y luego se ubica y se detalla la posición de América Latina. El principal resultado es que la región constituye un polo relativamente autónomo que articula movilidades Norte-Sur-Sur, sin embargo, la región se encuentra en una relación de dependencia bicéfala con los países anglosajones y Europa.
El trabajador digital, entre la inclusión y la exclusión protectoria
Authors: Ospina Torres Edward F.
Published: July 2021

En este artículo se analiza la naturaleza jurídica del trabajo prestado a través de la plataforma digital Uber, así como las diferentes problemáticas que presenta. Para ello, se revisará en detalle la Sentencia Uber BV and others (Appellants) v Aslam and others (Respondents) (Suprema Corte del Reino Unido, caso: UKSC 2019/0029, 2021), extrapolando el alcance de sus considerandos al contexto colombiano, planteando que, dadas las condiciones sui generis de este tipo de ocupación, resulta necesaria la revisión de las normas que regulan el trabajo humano dependiente e independiente.
Seismic Response of Retrofitting for High Rise R.C. Structure by Using R.C.C Jacketing and Steel Wrapping
Authors: Motghare Sachin
Published: July 2021

A seismic design depends on mix of solidarity and pliability. Incessant seismic aggravations, the structure are relied upon to stay in the flexible reach. By thinking about the real powerful nature of ecological unsettling influences, more upgrades are required in the plan methodology. What's more, some development procedures are utilized to fortify the current structures i.e. distinctive retrofitting methods. All these technique shave their own benefits. The principle objective of the current examination is to dissect the conduct of Retrofitted fabricating i.e. provision of steel jacketing in expanding the presentation of building. The current examination targets checking the adequacy of multi-story outline structures utilizing retrofitting strategies for the seismic excitations. The Retrofitted building for example arrangement of steel jacketing is investigated and contrasted and exposed edge structure by utilizing time history and sucker examination strategy by utilizing Commercial programming SAP2000 v16 is utilized for examination. The responses of the structure are compared by considering various boundaries i.e. displacement, base shear, plastic pivots, time-frame of mode shapes from FEMA – 356. The outcome shows that plastic pivot formation during quake at shaft section intersection can further developed execution with use retrofitting strategy for example steel jacketing.
A Study on Impact of Covid-19 on Indian Education System
Authors: Kashyap Sonia
Published: July 2021

The spread of pandemic COVID-19 has drastically disrupted every aspects of human life including education. It has created an unprecedented test on education. In many educational institutions around the world, campuses are closed and teaching-learning has moved online. Internationalization has slowed down considerably. In India, about 32 crores learners stopped to move schools/colleges and all educational activities brought to an end. Despite of all these challenges, the Higher Education Institutions (HEIs) have reacted positively and managed to ensure the continuity of teaching-learning, research and service to the society with some tools and techniques during the pandemic. While we all know that the entire world is facing the tough time due to impact of COVID 19. It has hampered almost all the sector in more than 200+ countries. India is also facing the major impact of it from the March 2020 till today due to the reason that the whole India is facing the challenge of Lockdown. It has also have the major impact on the Indian Education society and all the academic work is put on hold by the apex body UGC for the safety measures of students and faculties. In this paper, we have focused on to check the impact of COVID 19 on the Indian Education working pedagogy and its positive and negative impact in terms of student and faculty perspective. For this purpose the primary study has been conducted by structuring questionnaire by asking open ended and close ended questions to the respondent and our major stakeholders associated with the Indian education for the survey such as Students, faculties and Parents. The study is descriptive and analytical in nature where the information has been collected from the various official websites, newspapers, online news articles, and discussions. The study mainly focused on the recent adaption by the faculties to teach their students through the Virtual classroom instead of physical classroom teaching. The paper will give the final outcome of the benefits and drawbacks of Virtual classrooms in the opinion of faculties, students and parent’s opinion. The paper will also let us know that due to coronavirus impact the Virtual classroom is now the integral part of Indian Education society or not. The higher education plays a key role for socio- economic development of the people in any country and with the implementation of these suggestive measures, the country will move forward and ensure the overall progress in education sector. Some fruitful suggestions are also pointed to carry out educational activities during the pandemic situation.
Home Automation Using Gestures
Authors: Gauns Rajesh
Published: July 2021

The proposed system “Home Automation models using gestures” is designed for providing ease of control of home appliances to the people, especially elderly or those who are physically unable to efficiently perform day-to-day activities. Initially the images of the gestures are captured in real time using a camera placed in the room and are processed to be compared with the existing set of gestures. Based on the gesture shown, the image is then processed to attain the actual meaning of the gesture. So if the gestures match, then the particular appliance in that room is switched on or off by which it helps the user to stay at his place in the room and doesn't need to actually move to the switchboard to turn on the appliances.
Isolation of Pseudomonas Species from Rhizospheric Soil and its Antagonistic Effect on Plant Pathogen
Authors: Vadivu G Nadana Raja
Published: July 2021

The pathogen attack on plants (such as tubers and small plants) has substantially progressed by 60% irrespective of even when the plants have strong immune system for the past five decades. It drastically affects the plant growth, yield and production. Certain pesticides and fertilizers have been tried to control the progressing pathogenic microorganisms. Although these measures have proved worthless due to the resistance shown by those pathogens and resulted in environmental pollution over a period of time. Bio control measures are well appreciated as it is ecofriendly. Antagonist microorganism (bacteria, fungi) will be used to suppress the growth of the invading pathogens. In this study, Pseudomonas species , were screened from rhisozpheric soill from the local region of Srivilliputhur. Eleven isolates from rhizospheric soil were screened and characterized by Gram staining, catalase test, Voges-Proskauer test, and oxidase test. The morphological studies of all the screened Pseudomonas isolates were observed as Gram negative. Further, all the isolates were found to be catalase positive and negative for VP test. The isolates were subjected to antagonistic effect on plant fungal pathogen such as Rhizoctonia solani. Among eleven Pseudomonas isolates four isolates showed antagonistic effect against R.solani. In the present investigation, four isolates showed potent antagonistic effect and could be used as effective bio-control agent against plant fungal pathogen R.solani.
What makes a green citizen in Taiwan's restaurant industry?
Authors: Han Hua , Yang Yi-Chun
Published: July 2021

Generating employees' altruistic behaviors toward green activities is important. We sought to understand what factors influence green organizational citizenship behavior of employees in the restaurant industry in Taiwan by examining the relationships among green human resource management
practices, employee commitment toward the environment, and green organizational citizenship behaviors. We used convenience sampling to collect data from 512 frontline staff of restaurant chains in Taiwan. Structural equation modeling was conducted to test our hypotheses, and the results show
that five green human resource management practices were positively related to employee commitment toward the environment, which, in turn, positively affected green organizational citizenship behavior. Managers of restaurants can adopt this understanding of the relationships of green human
resource management practices with employees' commitment toward the environment and green citizenship behavior.
The relationships among mobile travel application attributes, customer engagement, and brand equity
Authors: Tian Zemin , Lu Mengyuan , Cheng Qian
Published: July 2021

In this study we investigated the relationships among mobile travel application (app) attributes, customer engagement, and brand equity with 518 participants who were current users of these apps. Results show that perceived usefulness, perceived price advantage, and user interface attractiveness
positively influenced customer engagement with mobile travel apps, whereas perceived ease of use had no significant effect. Additionally, mobile travel app engagement was found to be significantly and positively related to brand awareness and brand loyalty. Finally, mobile travel app engagement
mediated the effects of perceived usefulness, perceived price advantage, and user interface on both brand awareness and brand loyalty. Our findings indicate that improving travel app attributes enhanced customer engagement with these apps, and this, in turn, increased brand equity.
Peer phubbing and selfie liking: The roles of attention seeking and gender
Authors: Hao Lujie , Liu Dan , Yin Jie , Lin Bingkun , Zhang Xiaosan , Jiang Qingquan
Published: July 2021

We explored the relationship between being phubbed by one's peers and selfie liking, and examined the mediating effect of attention seeking and the moderating effect of gender in this relationship. An online survey was conducted with 427 university students. The results reveal that
peer phubbing was positively related to attention seeking and selfie liking. Further, attention seeking was positively related to selfie liking, and attention seeking mediated the relationship between peer phubbing and selfie liking. The indirect pathways involved gender differences, with
a stronger indirect effect for men compared to that for women. Thus, gender moderated the relationship between peer phubbing and attention seeking, as well as the relationship between attention seeking and selfie liking. These findings illustrate that selfierelated behaviors may function as
a buffer for being phubbed. Moreover, phubbed individuals are prone to engage in attentionseeking behavior and frequent selfie liking.
Impact of college students' academic procrastination on subjective well-being
Authors: Bu Xiaodong , Wu Lin , Wang Hongchun
Published: July 2021

We used mindfulness as a mediating variable and self-efficacy as a moderator to examine the relationship between academic procrastination and subjective well-being. Participants comprised 512 college students from Hangzhou, Xiamen, and Huizhou in China. Results show that academic procrastination
had a negative impact on subjective well-being, and that mindfulness was a mediator in this relationship. In addition, self-efficacy played a moderating role in the academic procrastination–mindfulness relationship, and, to a certain extent, regulated the relationship between academic
procrastination and subjective well-being. Thus, the stronger the self-efficacy of college students, the weaker was the negative predictive effect of academic procrastination on mindfulness. The significance of mindfulness and self-efficacy regarding subjective well-being among procrastinators
is discussed.
GÊNERO E SAÚDE: um olhar para a mulher estomizada no contexto social e familiar
Authors: Cetolin Sirlei Favero , Wackerhagen Simone Kelly Cetolin , Beltrame Vilma , Soares Jorge Fernando
Published: July 2021

This article presents results of a qualitative research, carried out with the objective of identifying aspects of overcoming in the family and social life of ostomized women. The information was collected through an interview during the monthly withdrawal of collection bags and accessories, provided by the Unified Health System (SUS), during 2019. Participated in the study, ostomized women living in municipalities covered by the 1st Management Regional Health Department of the State of Santa Catarina. Among the results, it was noticed that living with the ostomy caused significant changes related to the affective and loving relationships of women. Insecurity and fear of family and social rejection were highlighted as the main generators of negative feelings. These feelings were also evident in gender relations, due to the historical construction focused on the importance of appearance for the female sex. On the other hand, the adequacy to the condition of ostomized women was demonstrated by strong reports of the recovery of self-esteem and “option for life”. Carrying out the study enabled important reflections, among which, the responsibility of health professionals, to contribute so that the whole process that involves the condition of ostomy, is reduced and humanized.
Quantum walk-based portfolio optimisation
Authors: Slate N. , Matwiejew E. , Marsh S. , Wang J. B.
Published: July 2021

This paper proposes a highly efficient quantum algorithm for portfolio optimisation targeted at near-term noisy intermediate-scale quantum computers. Recent work by Hodson et al. (2019) explored potential application of hybrid quantum-classical algorithms to the problem of financial portfolio rebalancing. In particular, they deal with the portfolio optimisation problem using the Quantum Approximate Optimisation Algorithm and the Quantum Alternating Operator Ansatz. In this paper, we demonstrate substantially better performance using a newly developed Quantum Walk Optimisation Algorithm in finding high-quality solutions to the portfolio optimisation problem.
Defining the elements of the communication paradigm in higher education under the influence of social media: Literature review
Authors: Babić Tihana
Published: July 2021

Although social media provide many opportunities to improve teaching processes, and today’s students do not know the world without them, there is still a trend of non-adaptation of new technologies in higher education institutions. The existing communication paradigm of social media is multidimensional, and thus complex and covers a wide theoretical and practical area. The main objective of this paper, based on the literature overview, is the conceptual foundation of social media and their main characteristics; to determine general elements of the existing communication paradigm in higher education under the influence of social media, and to identify gaps which can serve as an impetus for future research aimed at a holistic approach to changing the communication paradigm in higher education under the influence of social media.
A Multitask Deep-Learning System to Classify Diabetic Macular Edema for Different Optical Coherence Tomography Devices: A Multicenter Analysis
Authors: Tang Fangyao , Wang Xi , Ran An-ran , Chan Carmen KM , Ho Mary , Yip Wilson , Young Alvin L. , Lok Jerry , Szeto Simon , Chan Jason , Yip Fanny , Wong Raymond , Tang Ziqi , Yang Dawei , Ng Danny S , Chen Li Jia , Brelén Marten , Chu Victor , Li Kenneth , Lai Tracy HT , Tan Gavin S , Ting Daniel SW , Huang Haifan , Chen Haoyu , Ma Jacey Hongjie , Tang Shibo , Leng Theodore , Kakavand Schahrouz , Mannil Suria S , Chang Robert T , Liew Gerald , Gopinath Bamini , Lai Timothy YY , Pang Chi Pui , Scanlon Peter H , Wong Tien Yin , Tham Clement C , Chen Hao , Heng Pheng-Ann , Cheung Carol Y
Published: July 2021

Objective: Diabetic
macular edema (DME) is the primary cause of vision loss among individuals with
diabetes mellitus (DM). We developed, validated, and tested a deep-learning
(DL) system for classifying DME using images from three common commercially available
optical coherence tomography (OCT) devices.

Research
Design and Methods: We trained and validated two versions of
a multi-task convolution neural network (CNN) to classify DME (center-involved
DME [CI-DME], non-CI-DME, or absence of DME) using three-dimensional (3D)
volume-scans and two-dimensional (2D) B-scans respectively. For both 3D and 2D
CNNs, we employed the residual network (ResNet) as the backbone. For the 3D
CNN, we used a 3D version of ResNet-34 with the last fully connected layer
removed as the feature extraction module. A total of 73,746 OCT images were
used for training and primary validation. External testing was performed using 26,981
images across seven independent datasets from Singapore, Hong Kong, the US,
China, and Australia.

Results: In
classifying the presence or absence of DME, the DL system achieved area under
the receiver operating characteristic curves (AUROCs) of 0.937 (95% CI 0.920–0.954),
0.958 (0.930–0.977),
and 0.965 (0.948–0.977) for
primary dataset obtained from Cirrus, Spectralis, and Triton OCTs respectively,
in addition to AUROCs greater than 0.906 for the external datasets. For the
further classification of the CI-DME and non-CI-DME subgroups, the AUROCs were
0.968 (0.940–0.995),
0.951 (0.898–0.982),
and 0.975 (0.947–0.991) for
the primary dataset and greater than 0.894 for the external datasets.

Conclusion: We
demonstrated excellent performance with a DL system for the automated
classification of DME, highlighting its potential as a promising second-line screening
tool
for patients with DM, which may
potentially create a more effective triaging mechanism to eye clinics.
The Trend of Fermented Foods
Authors: Shue Wang Shue
Published: July 2021

Fermented food is one of the traditional human diet cultures. In early human history, it is mainly used in food preservation and taste increases. Western medicine has long been less help for some difficult chronic diseases. Some studies have shown that the gastrointestinal tract is directly related to immunity, nerves, metabolism, and the like. The microbiota of the gastrointestinal tract is closely related to health. Turning the unbalanced into balanced microbiota can often reverse the diseases and restore health, especially for chronic or degenerative diseases that are currently difficult to have drug effects, such as Parkinson's disease (PD), Alzheimer's disease (AD), depression, and cancer, etc. The discovery and research of probiotics have demonstrated their health effects by helping balance or formation of beneficial microbiota in gastrointestinal tract. Supply of probiotics has become a good way of health care in people's daily life. Fermented foods not only provide important nutrients, functional active ingredients, but also provide a group of active microorganisms that are beneficial to the body health, which can repair, balance or maintain the healthy microbiota of the gastrointestinal tract. Driven by the health care trend, fermented food has become an option for people to maintain health. Scientists have begun to interest in the feasibility of using single or combined natural herbal ferments for use in difficult diseases. Initial results have also shown significant effectiveness and they are expected to be an improvement or resolution of unresolved ill diseases in the future. In spite of fermented food or herbal medicine, it is necessary to construct a good quality of fermented food or herbal ferment. In the fermentation process, selected specific microbe or microbiota, and developed chemical and biological analysis methods to confirm the quality of the food after fermentation, and clarified the microbial population in the food after fermentation are necessary. The final products are confirmed the beneficial microbe or microbiota and show the evidence of clinical safety and efficacy. In order to widely promote the fermented foods in market in the future, the products should be cheaper than that of the current market products. One approach is researched to shorten the fermentative process which can increase inventory turnover