bluuebunny/crossref_metadata_2025 huggingface dataset:
El rol de enfermería en cuidados paliativos: una revisión de literatura
Authors: Llerena Cruz Carmen Alicia , Ramírez Gavilanes Gloria Isabel , Morales Mayorga Silvia Graciela , Simbaña Quishpi María Aurora
Published: July 2022

Introducción: Los cuidados paliativos son un enfoque que mejora la calidad de vida de los pacientes y sus familias que se enfrentan a los problemas asociados a las enfermedades potencialmente mortales. Objetivo: Investigar cómo el personal de enfermería, en diversos sistemas de salud, describen su papel en la prestación de cuidados paliativos a los pacientes con enfermedades potencialmente mortales. Métodos:  Una revisión sistemática cualitativa de estudios. Resultados: En base al análisis, según varios autores concuerdan que el personal de enfermería cumple un papel fundamental en los cuidados paliativos. Además de hacer lo necesario para manejar una enorme amplitud de actividades, siempre en un marco holístico de comprensión. Así mismo, de estar presente de forma atenta y dedicada, como también utilizar métodos flexibles y poco tradicionales. Conclusión: Esta revisión muestra que el personal de enfermería, en todas las instituciones sanitarias, tienen una posición única en los cuidados paliativos. El papel principal de la enfermera abarca la disponibilidad y la coordinación de los servicios sanitarios.
Contribution of marine biological emissions to gaseous methylamines in the atmosphere: an emission inventory based on satellite data
Authors: Zhang Qi , Jia Shiguo , Chen Weihua , Mao Jingying , Yang Liming , Krishnan Padmaja , Sarkar Sayantan , Shao Min , Wang Xuemei
Published: July 2022

Abstract. Methylamines can readily react with acidic gases in the atmosphere, which consequently has an important impact on the atmospheric environment. It is difficult to measure amines in field studies due to their high reactivity, and therefore, numerical modelling is an effective tool to study ambient amines. However, the contribution of marine biological emissions (MBE), an important source of methylamines (MA), has been insufficiently investigated in the current emission inventory. Therefore, this study utilized satellite data such as Sea Surface Temperature (SST), Chlorophyll-a (Chla), Sea Surface Salinity (SSS) and model simulation data (Wind Speed, WS) to establish a more reasonable MBE inventory of amines. Spatial and temporal distribution of methylamine emissions indicates that MBE fluxes of monomethylamine (MMA) and trimethylamines (TMA) can be comparable with or even higher than that of terrestrial anthropogenic emissions (AE), while for dimethylamines (DMA), the ocean acts as a sink. The method used in this study can better reflect the exchange direction of amines between ocean and atmosphere, and reflect the emission characteristics of different amines. From WRF-Chem simulation results, the concentration of amines in the coastline was found to increase significantly due to the contribution of MBE. Wind and Chla were potentially the most important factors affecting MBE fluxes. WS is directly used in the calculation of ocean-atmosphere exchange coefficient Kg, and the direction of the prevailing winds in different seasons affects the area of influence of the MBE. Chla indirectly influences the calculation results of exchange flux by affecting the calculation of pH. In addition, the emission fluxes and spatial distribution of AE and wet deposition also affect the simulation of amines.
A non-stationary extreme-value approach for climate projection ensembles: application to snow loads in the French Alps
Authors: Le Roux Erwan , Evin Guillaume , Eckert Nicolas , Blanchet Juliette , Morin Samuel
Published: July 2022

Abstract. Anticipating risks related to climate extremes often relies on the quantification of large return levels (values exceeded with small probability) from climate projection ensembles. Current approaches based on multi-model ensembles (MMEs) usually estimate return levels separately for each climate simulation of the MME. In contrast, using MME obtained with different combinations of general circulation model (GCM) and regional climate model (RCM), our approach estimates return levels together from the past observations and all GCM–RCM pairs, considering both historical and future periods. The proposed methodology seeks to provide estimates of projected return levels accounting for the variability of individual GCM–RCM trajectories, with a robust quantification of uncertainties.
To this aim, we introduce a flexible non-stationary generalized extreme value (GEV) distribution that includes (i) piecewise linear functions to model the changes in the three GEV parameters and (ii) adjustment coefficients for the location and scale parameters to adjust the GEV distributions of the GCM–RCM pairs with respect to the GEV distribution of the past observations. Our application focuses on snow load at 1500 m elevation for the 23 massifs of the French Alps. Annual maxima are available for 20 adjusted GCM–RCM pairs from the EURO-CORDEX experiment under the scenario Representative Concentration Pathway (RCP) 8.5. Our results show with a model-as-truth experiment that at least two linear pieces should be considered for the piecewise linear functions. We also show, with a split-sample experiment, that eight massifs should consider adjustment coefficients. These two experiments help us select the GEV parameterizations for each massif. Finally, using these selected parameterizations, we find that the 50-year return level of snow load is projected to decrease in all massifs by −2.9 kN m−2 (−50 %) on average between 1986–2005 and 2080–2099 at 1500 m elevation and RCP8.5. This paper extends the recent idea to constrain climate projection ensembles using past observations to climate extremes.
Theoretical and numerical considerations of rivers in a tectonically inactive foreland
Authors: Hergarten Stefan
Published: July 2022

Abstract. Modeling the dynamics of alluvial rivers is theoretically and numerically
more challenging than modeling erosion of bedrock channels in active
mountain ranges. As a consequence, the majority of the approaches developed in the
context of alluvial rivers are one-dimensional. However, recent advances in the
numerics of fluvial landform evolution models allow for two-dimensional simulations
of erosion and sediment transport over time spans of several million years.
This study aims at
finding out fundamental properties of rivers in a tectonically
inactive foreland of a mountain range by investigating a simple
reference scenario theoretically and numerically. This scenario consists
of a mountain range
and a foreland in a quasi-steady state wherein the material eroded
in the mountain range is routed through the foreland. In order to
understand the properties of foreland rivers, a subdivision into
two classes – carriers and redistributors – is introduced.
Carriers originate in the mountain range and are thus responsible
for the large-scale sediment transport to the ocean. In turn,
redistributors are rivers whose entire catchment is located
in the foreland. Using the concept of carriers and redistributors,
it is shown that the drainage network in the foreland permanently
reorganizes so that a steady state in the strict sense is impossible.
However, the longitudinal profiles of carriers are described well by
a steady-state approximation. Their concavity index is considerably
greater than that of rivers in the mountain range. Carriers
predominantly deposit sediment at high rates, while redistributors
erode at much lower rates. Despite the low erosion rates,
the sediment flux from
redistributors into carriers is a major component of the overall sediment
budget and finally the main driver of the highly dynamic behavior of
the carriers.
Probabilistic estimation of depth-resolved profiles of soil thermal diffusivity from temperature time series
Authors: Brunetti Carlotta , Lamb John , Wielandt Stijn , Uhlemann Sebastian , Shirley Ian , McClure Patrick , Dafflon Baptiste
Published: July 2022

Abstract. Improving the quantification of soil thermal and physical properties is key to achieving a better understanding and prediction of soil hydro-biogeochemical processes and their responses to changes in atmospheric forcing. Obtaining such information at numerous locations and/or over time with conventional soil sampling is challenging. The increasing availability of low-cost, vertically resolved temperature sensor arrays offers promise for improving the estimation of soil thermal properties from temperature time series, and the possible indirect estimation of physical properties. Still, the reliability and limitations of such an approach need to be assessed. In the present study, we develop a parameter estimation approach based on a combination of thermal modeling, sliding time windows, Bayesian inference, and Markov chain Monte Carlo simulation to estimate thermal diffusivity and its uncertainty over time, at numerous locations and at an unprecedented vertical spatial resolution (i.e., down to 5 to 10 cm vertical resolution) from soil temperature time series. We provide the necessary framework to assess under which environmental conditions (soil temperature gradient, fluctuations, and trend), temperature sensor characteristics (bias and level of noise), and deployment geometries (sensor number and position) soil thermal diffusivity can be reliably inferred. We validate the method with synthetic experiments and field studies. The synthetic experiments show that in the presence of median diurnal fluctuations ≥ 1.5 ∘C at 5 cm below the ground surface, temperature gradients > 2 ∘C m−1, and a sliding time window of at least 4 d the proposed method provides reliable depth-resolved thermal diffusivity estimates with percentage errors ≤ 10 % and posterior relative standard deviations ≤ 5 % up to 1 m depth. Reliable thermal diffusivity under such environmental conditions also requires temperature sensors to be spaced precisely (with accuracy to a few millimeters), with a level of noise ≤ 0.02 ∘C, and with a bias defined by a standard deviation ≤ 0.01 ∘C. Finally, the application of the developed approach to field data indicates significant repeatability in results and similarity with independent measurements, as well as promise in using a sliding time window to estimate temporal changes in soil thermal diffusivity, as needed to potentially capture changes in bulk density or water content.
The Immediate Effects of Rigid Taping on Physical Performance in Women with Hallux Valgus Deformity
Authors: DEMİRDEL Ertuğrul , KARADUMAN Aynur Ayşe
Published: July 2022

Purpose: The aim of the study was to investigate the immediate effects of taping on physical performance in women with flexible hallux valgus. Material and Methods: Forty voluntary women with hallux valgus included in the study. Individuals carried out the timed-performance activities barefoot. The 10-meter walk test was used to reflect walking speed and 10 stairs ascent time was recorded. Each measurement was repeated three times and the average of three measurements were recorded. Individuals performed the timed-performance tests before and after taping and the differences between the measurements were compared. Participants were divided into groups according to the variables age and Body Mass Index, and timed-performance test results were also analyzed in this way. Results: Walking speed of all individuals increased (p
Perceived Social Support and Psychological Distress among Healthcare Professionals during COVID-19
Authors: Nazim Dr Abia , Nazim Dr Tauqeer , Suneel Dr Ivan
Published: July 2022

The Coronavirus disease (COVID-19) has brought an array of problems affecting people everywhere. Healthcare professionals were under immense work and emotional pressure since the advent of COVID-19 outbreak which exposed them to physical and psychological vulnerabilities. Current study was designed to investigate social support and psychological distress defined as depression, anxiety and stress in healthcare professionals serving during COVID-19. Sample comprised 321 healthcare professionals including male (n=57%) and female (n= 42%) professionals from various healthcare facilities. Majority of the participants had poor social support. Depression mean score (11.86, SD= 5.81) was in mild severity range, whereas mean score of anxiety (11.81, SD=5.76) indicated moderate severity. Mean score on stress (14.01, SD= 7.37) was towards the high side of the normal range. Data revealed gender differences in terms of mean scores on depression, anxiety, stress (p<0.05) and social support (p>0.05). Female healthcare professionals scored significantly lower (p<0.05) on all components of psychological distress namely depression, anxiety and stress than males. Those with high scores on any of the three dimensions of psychological distress also showed to have poor social support. Healthcare professionals noted to have experienced mild to moderate levels of psychological distress and showed differences in level of psychological distress based on relative exposure to patients, perceived social support and gender.
Surgical and functional impact of nerve-sparing radical hysterectomy for parametrial deep endometriosis: a single centre experience
Authors: Rosati A , Pavone M , Campolo F , De Cicco Nardone A , Raimondo D , Serracchioli R , Scambia G , Ianieri M.M.
Published: July 2022

Background: Deep endometriosis (DE) usually creates a distortion of the retroperitoneal anatomy and may infiltrate the parametria with an oncomimetic pathway similar to cervical cancer. The condition represents a severe manifestation of endometriosis that may result in a functional impairment of the inferior hypogastric plexus.
An extensive surgical resection may be required with an associated risk of increased neurogenic postoperative pelvic organ dysfunction.

Objectives: To evaluate the post-operative function and complications following hysterectomy with posterolateral parametrial resection for DE.

Materials and Methods: In total, 23 patients underwent radical hysterectomy for DE with the parametria involved. The severity of pain was assessed by the Visual Analogue Scale (VAS) score. The KESS, GQLI, BFLUTS and FSFI were used to examine the gastrointestinal, urinary and sexual functions respectively. Intra and post-operative complications were recorded.

Main outcome measures: The main outcomes were gastrointestinal, urinary and sexual function and intra and post-operative complications.

Results: Dyschezia, dyspareunia and chronic pelvic pain were significantly reduced following hysterectomy. Furthermore, an improvement of gastrointestinal function was observed, while sexual functions, examined by FSFI and urinary symptoms, examined by BFLUTS, was not shown to be significant.

Conclusion: The modified nerve-sparing radical hysterectomy for DE results in an improvement of symptoms. Nevertheless, despite the nerve-sparing approach, this procedure may be associated with a not-negligible risk of post-operative bladder voiding deficit.

What is new? This is the first study that focuses on parametrial endometriosis using validated questionnaires to assess functional outcomes following radical hysterectomy for DE.
Initial experience with vNOTES hysterectomy for benign conditions in a French university hospital
Authors: Baron C , Netter A , Tourette C , Pivano A , Agostini A , Crochet P
Published: July 2022

Background: Natural orifice transluminal endoscopic surgery by the vaginal route (vNOTES) is a new approach to performing hysterectomy. Clinical outcomes must be evaluated in centres that have started performing this technique.

Objectives: To compare operative outcomes between vNOTES hysterectomy and laparoscopic hysterectomy during the introduction of the vNOTES approach in a teaching hospital.

Material and Methods: A retrospective study was conducted from November 2019 to May 2021 at a French academic hospital in Marseille. The included patients underwent total hysterectomy for benign indications by vNOTES or conventional laparoscopy.

Main Outcome Measures: Operative time, uterus weight, intraoperative complications, and postoperative complications according to the Clavien-Dindo classification.

Results: Eighty-six patients underwent hysterectomy according to the selected criteria: 36 procedures were performed by vNOTES and 50 by laparoscopy. The mean operative time was shorter in the vNOTES group than in the laparoscopy group [116 min versus 149 min; p=0.003]. The mean uterus weight was not different between the vNOTES group and the laparoscopy group (238g versus 281g; p=0.572). Laparo-conversion occurred in one case in the vNOTES group (2.7%) and three cases in the laparoscopy group (3.4%). One Grade III postoperative complication occurred in the laparoscopy group, and no severe complication occurred in the vNOTES group.

Conclusion: Operative outcomes of the vNOTES hysterectomy were favourable and support good feasibility without additional morbidity compared to laparoscopy.

What is new? During the introduction period of the vNOTES hysterectomy technique in a teaching hospital, reassuring operative outcomes and a low rate of complications were observed.
3D transvaginal ultrasound diagnosis of uterine septa according to different classifications: are there other measurements that correlate to reproductive outcome in small indentation length?
Authors: Russo C , Conway F , Siciliano T , Selntigia A , Giuseppe Martire F , Soreca G , Ticconi C , Exacoustos C
Published: July 2022

Background: High discrepancy between current classifications was observed in the definition of uterine septa, especially for indentation lengths >5 <10mm.

Objectives: To assess the discrepancy between current classifications in the diagnoses of septate uterus and to correlate them with reproductive outcomes; to detect 3D transvaginal ultrasound (TVS) additional measurements, which can better correlate small indentation lengths >5 <10mm to reproductive failures.

Material and methods: Observational study enrolling 664 women of reproductive age with 3D ultrasound diagnosis of an indentation length ≥3mm. For each patient a detailed reproductive history was taken before performing 3D transvaginal examination. Patients with previous uterine surgery or metroplasty were excluded.

Main Outcome Measure(s): Indentation lengths >5 <10mm showed high discrepancy in the diagnosis of uterine septum between different classifications. For these small indentations additional 3D measurements (indentation angle, septal width and septal length/ fundal myometrial thickness (L/M) ratio) were correlated to infertility and recurrent miscarriage.

Results: Among the cohort, 215 patients showed an indentation length >5 <10mm; 136 tried to conceive: 69 (51%) were infertile, 38 (28%) had recurrent miscarriages (≥2) and 5 (4%) had at least one delivery. Recurrent miscarriage significantly correlated to an indentation angle >134°; whereas infertility to an indentation width <32mm and a L/M ratio >75%.

Conclusions: Wide discrepancies between different classifications are more evident in indentation lengths >5 <10mm. Additional measurements on 3D coronal section may help to evaluate the risk of infertility or recurrent miscarriage.

What is new? Additional 3D TVS measurements, beyond septal lengths, in particular for small fundal indentation, may help in predicting the risk of developing adverse reproductive outcomes.
Factors influencing pregnancy outcome with special attention to modified slow-release insemination and a patient-centred approach in a donor insemination programme: a prospective cohort study
Authors: Ombelet W , Van der Auwera I , Bijnens H , Kremer C , Bruckers L , Mestdagh G , Dhont N , Campo R
Published: July 2022

Introduction: A higher pregnancy rate after slow-release insemination instead of bolus injection was described in previous studies. Besides an effective medical treatment most patients wish to receive a patient-centred approach with sufficient emotional support.

Study question: Does a patient-friendly approach with slow-release insemination (SRI) increase the clinical pregnancy rate (CPR) after intrauterine insemination (IUI) with donor semen?

Study design, size, duration: The data of an ongoing prospective cohort study were analysed investigating the results of 1995 donor inseminations in 606 women from July 2011 until December 2018. As from January 2016 the insemination procedure was performed by midwives instead of medical doctors. Instead of bolus injection of sperm a slow-release IUI was done together with a more patient-centred approach.

Materials and Methods: The data of 1995 donor inseminations were analysed to study the importance of different covariates influencing IUI success. Generalized estimating equations (GEEs) were used for statistical analysis. Results of two periods (2011-2015 and 2016-2018) were examined and compared.

Results: Clinical pregnancy rates (with foetal heartbeat) following donor inseminations increased from 16.6 % to 20.8 % per cycle, a non-significant increase (p=0.061).

Conclusion: A more patient-friendly approach with slow-release of processed semen resulted in a non-significant higher clinical pregnancy rate of 4.2 % per cycle after donor insemination.
Formando al profesorado para la inclusión: evaluación de un sistema de acciones.
Authors: Herreros Hernández Ana Luisa , Batista Sardain Patricia
Published: July 2022

INTRODUCCIÓN. La inclusión en la educación es el paradigma que desde hace varios años han asumido las entidades internacionales y de muchos países del mundo. Defiende y legitima la diversidad para construir sistemas de enseñanza que ajusten sus funciones a las demandas de un estudiantado diverso, garantizando oportunidades educativas efectivas. En Cuba, las políticas de educación son coherentes con estos propósitos. El rol del docente es relevante en las acciones de perfeccionamiento, incluyendo su proceso de formación inicial y continua. Esta investigación tiene como objetivo evaluar el diseño de un sistema de acciones de intervención dirigido a profesores para fortalecer su preparación como propulsor de la inclusión. MÉTODO. La metodología seguida se basa en la evaluación de programas de intervención, específicamente en uno de los momentos del proceso (evaluación del diseño), a partir de su implementación en el colectivo docente de una escuela pedagógica de La Habana, Cuba. RESULTADOS. La valoración de cada uno de los componentes del sistema de acciones demostró sus fortalezas y funcionamiento, así como elementos sujetos a mejoras para futuras ediciones. Lo cual demuestra que la propuesta constituye una alternativa posible para fortalecer la preparación de los docentes. DISCUSIÓN. La intervención escolar constituye un verdadero reto. La apuesta por una educación inclusiva prepara el camino para la transformación escolar pero las prácticas educativas cotidianas tienen sus propios ritmos. En un escenario actual, marcado por los efectos de la Covid-19, la educación debe reafirmar su compromiso y sus acciones por lograr ser inclusiva, desarrolladora y capaz de ofrecer a todos los estudiantes una formación integral de calidad y significativa para la vida.
Las guías docentes de las facultades de comunicación en España: una práctica del profesorado con escasa perspectiva de género
Authors: Martínez-García Luisa , Ferrer Iliana
Published: July 2022

La investigación sobre la introducción de la perspectiva de género en la educación superior -específicamente en el ámbito de los grados de la Comunicación en España- es escasa, teniendo en cuenta el papel fundamental de los contenidos mediáticos en la promoción de estereotipos de género en la sociedad. Actualmente, la adopción de dicha perspectiva en la formación universitaria es una exigencia del Espacio Europeo de Educación Superior, de las políticas universitarias españolas y del marco legal del Estado español.  
El objetivo de este artículo es estudiar, a través de la técnica del análisis de contenido cuantitativo, la presencia y expresión de la perspectiva de género en las guías docentes de los grados de Comunicación Audiovisual, Periodismo y Publicidad de 6 universidades españolas. La muestra de la investigación la integraron 812 guías docentes de los cursos 2018-2019 y 2019-2020.
Los resultados señalan que en 2 de cada 8 guías docentes se incluyen aspectos relacionados con la perspectiva de género y se concentran mayoritariamente en asignaturas especializadas en género por lo que su alcance no es transversal al plan docente de los grados analizados. Además, las mujeres están infrarrepresentadas como referentes en las bibliografías y en su mayoría son las profesoras quienes intentan corregir este sesgo. Se concluye que las guías docentes analizadas carecen de perspectiva de género. Se espera que los resultados de esta investigación contribuyan a la visibilización de la necesidad de incluirla de manera transversal en los planes docentes de los grados universitarios españoles.
"And though our dreams may be shattered to pieces, I will resist”: digital storytelling to analyze emotional impact of the pandemic on university students
Authors: Cruz-González Cristina , Mula-Falcón Javier , Domingo Segovia Jesús , Lucena Rodríguez Carmen
Published: July 2022

La Covid-19 generó un importante impacto en la salud mental de los estudiantes universitarios. En este contexto, surge una doble necesidad: analizar los efectos de este impacto y trabajar la educación emocional con este sector educativo. Este estudio forma parte de un proyecto más amplio de innovación educativa centrado en trabajar la educación emocional de los estudiantes universitarios. En este caso, el principal objetivo del presente estudio fue analizar las experiencias de los estudiantes universitarios (N=6) durante la pandemia a través de Digital Storytellings. Los resultados muestran aspectos reveladores sobre la influencia que tuvo la pandemia en los estudiantes: las carencias de la virtualidad en la enseñanza, el desarrollo de estrategias de afrontamiento, las lecciones aprendidas de la pandemia, etc. Por último, se exponen una serie de implicaciones para la educación superior, como la promoción de planes de educación emocional, la optimización de los recursos educativos en línea y el aumento de la formación del profesorado en temas digitales y de apoyo emocional.
Factor Affecting Secondary School Students' Level of School Attachment: School Burnout
Authors: KARAKAYA Mustafa , SARIASLAN Erdem , KAHRAMAN Berrin
Published: July 2022

The aim of this study is to examine the school burnout factors that affect the level of school attachment of secondary school students. The research was carried out with a total of 326 secondary school students studying in the eighth grade in a secondary school in a province of the Central Anatolia Region. In the research, "School Attachment Scale for Children and Adolescents" developed by Savi (2011) to measure students' school attachment levels, and "Primary Education II. “School Burnout Scale for Level 1 Students” was used. Multiple linear regression analysis was used to examine school burnout as the level of school attachment. SPSS was used in the analysis of the research data. As a result of the research, it was determined that school burnout factors are important factors that predict school attachment. Suggestions for different stakeholders were developed in line with the findings obtained from the research.
Development of Low-Temperature Block Type Facility for Sea Water Desalination
Authors:   Odessa National Academy of Food Technologies, Ukraine, Burdo Oleg , Terziev Sergey ,   PRJSC “ENNI FOODS”, Ukraine, Mordynsky Vsevolod ,   Odessa National Academy of Food Technologies, Ukraine, Sirotyuk Ilya ,   Odessa National Academy of Food Technologies, Ukraine, Fateeva Yana ,   Odessa National Academy of Food Technologies, Ukraine, Molchanov Mikhail ,   Odessa National Academy of Food Technologies, Ukraine
Published: July 2022

This work is devoted to the fresh water deficit analysis. The importance of the research concerning water treatment is emphasized. A comparative analysis of water demineralization traditional methods is given and prospects for low-temperature desalination methods are shown. The increase in the world interest to the research of the block freezing innovative technologies was established, the priority in which belongs to the authors of this work. The aim of the work is to improve the block freezing devices during their transferring to a continuous operation mode. Achievement of this aim lies in a proposed universal design of the apparatus, in which the processes of crystallization, separation and melting of ice are sequentially implemented. A module for a continuous seawater desalination facility was developed. The energy and operational advantages of the proposed method were described. The system modeling of this equipment was carried out. The target function of the modeling determined the key parameters of the process of the ice block gravitational separation — energy and salinity. It was proposed to correct the traditional calculation principles for the outflow in channels by the “capillary drag” coefficient, which takes into account the relief surface of the ice capillaries. A technique for the engineering calculation of ice block salinity during separation was offered. The most significant result of the work lied in the fact of possibility to transfer the block freezing facilities to the continuous mode of sea water desalination with guaranteed salinity indicators. The significance of the work was that an energy-efficient freezing facility with ice recycling for the sea water demineralization in the flow was created.
The Sufficient Condition for Ensuring the Reliability of Perception of the Steganographic Message in the Walsh-Hadamard Transform Domain
Authors:   Odessa Polytechnic National University, Ukraine, Kobozeva Alla , Sokolov Artem ,   Odessa Polytechnic National University, Ukraine
Published: July 2022

In view of the high compatibility of the Walsh-Hadamard transform to the architecture of modern computing facilities, it is sensible to use it in methods of steganography and steganalysis. Now, there are some efficient steganographic methods that use the Walsh-Hadamard transform domain for information embedding presented in the literature. It is known that to ensure the reliability of the steganographic message perception, information should be embedded in its high-frequency components; nevertheless, the issues of the correspondence of the Walsh-Hadamard transformants to the frequency components of the original matrix of the cover image are poorly researched. The purpose of this paper is to develop a formal sufficient condition for ensuring the reliability of perception of steganographic messages in the Walsh-Hadamard transform domain. This purpose was achieved by establishing the relationship between the Walsh-Hadamard transformants and the discrete cosine transform transformants, which was theoretically substantiated in two ways, and also experimentally confirmed. Based on the established relationship between the Walsh-Hadamard transform and the discrete cosine transform, as well as the components of the singular value decomposition of the corresponding matrices, a sufficient condition has been developed to ensure the reliability of the perception of steganographic messages in the Walsh-Hadamard transform domain. The sufficient condition consists in the fact that after embedding of additional information using any steganographic method, those WalshHadamard transformants that correspond to the singular triples of the matrix corresponding to small (smallest) in value singular numbers, should change.
Fluidized Bed Seed Dewatering System
Authors:   Institute of Power Engineering, Republic of Moldova, Tîrșu Mihai , Balan Mihail ,   State Agrarian University of Moldova, Popescu Victor ,   State Agrarian University of Moldova, Kurdov Igor ,   State Agrarian University of Moldova, Balan Tatiana ,   State Agrarian University of Moldova, Rotari Viorel ,   State Agrarian University of Moldova
Published: July 2022

The aim of this work is to improve the efficiency of the dehydration process of seeds of agricultural plants by applying the fluidized bed treatment method. In order to achieve the aim of the work, an experimental plant for the dehydration of seeds in fluidized layer was developed, based on which the research was carried out. Convection and SHF were used as sources of fluidized bed seed treatment. The efficiency of the dehydration process with the application of the developed experimental plant was estimated for 3 types of seeds of agricultural alleaginous plants: grape seeds, flax seeds and white buckthorn seeds. These types of seeds were selected for research because at present their dehydration is a problem and they have a great potential for the food industry, traditional medicine, cosmetic industry, pharmaceutical industry, etc. The main results obtained in the application of the developed plant to the treatment of seeds of agricultural plants in a fluidized layer are: increase of the dehydration process speed, reduction of the treatment time, reduction of electricity consumption, increase of the seed quality and reduction of the processing costs. Again, the plant is simple in terms of construction, easy to use, low in cost and during operation has demonstrated a high level of operational safety. The significance of the results obtained lies in the efficiency of the process of dehydration of oilseeds of agricultural plants, based on fluidized bed treatment, mainly with a reduction in the cost of technological processing and an increase in the quality of these seeds, for subsequent use in the food industry, traditional medicine, cosmetics industry, pharmaceutical industry, etc.
知识产权保护对国际贸易的影响基于2002年至2020年我国省级技术创新水平的实证分析
Authors: 张 颖
Published: July 2022

近几年受经济全球化浪潮席卷，加之我国国际贸易模式升级调整的内部需求，导致我国知识产权结构的变革，国内与外部的知识产权交流与摩擦也达到历史的高峰；知识产权保护国际贸易迈出新步伐，但也暴露出我国知识产权的保护方面依然存在诸多问题。本文以技术创新水平为主要影响因子，来探究近年来知识产权保护力度对我国国际贸易的影响，并以国内近年来具体的数据和趋向为切口，分析我国从传统经济模式转型为新模式之后，开展国际贸易工作对于知识产权保护新的需求变化。本文将大陆地区分为三大模块，比较不同模块之间技术创新水平体现出来的知识产权需求差异，具体分析各个模块的知识产权保护，探寻有差别、有选择的知识产权保护措施，对我国产业发展及进出口贸易的重要意义。
Design and optimization of transparent scattering solar concentrator based on SiO2 aerogel
Authors: Zhang Feng , Bao Jun , Gao Chen ,   National Synchrotron Radiation Laboratory & Collaborative Innovation Center of Chemistry for Energy Materials, University of Science and Technology of China, Hefei 230029, China,   School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Published: July 2022

Scattering solar concentrators (SSCs), an important component of transparent/translucent photovoltaic devices, can concentrate large-area sunlight on small-area solar cells while allowing some sunlight to pass through the devices. However, owing to the lack of suitable scattering materials, there have been few reports on SSCs in recent years. In this study, we fabricated SiO2 aerogel-based SSCs and tested their performances. The photoelectric performance was found to be moderate. Additionally, the results demonstrated excellent transmittance and color rendering index, which meet the lighting requirements of the windows. A Monte Carlo ray tracing program was developed to simulate an SSC and analyze the fate of all photons. We also analyzed the multiple scattering mechanism in SSCs that damages the photoelectric efficiency of a device via theoretical simulation. Finally, we proposed an anisotropic scattering device that can increase the primary scattering and suppress multiple scattering, resulting in excellent photoelectric efficiency.
The Correlation of Angkola, Mandailing, and Nias Languages
Authors: Afriani Siagian Beslina , Widayati Dwi
Published: July 2022

Historically and geographically, there is a correlation between the Nias ethnic and the Mandailing ethnic. On the other hand, the Angkola and Mandailing ethnic have been clearly correlated from a long time ago. That is the basic of this research, to measure the level of correlation of the Angkola, the Mandailing, and the Nias language. The data in this study were analyzed by referring to Crowley's formula, such as calculating the correlation vocabulary, calculating the percentage of correlation, and calculating the separation time. Based on this reference, the following results were obtained: First, The Angkola and Nias language correlation level is 39.5%. Second, languages ​​are in one family or family with a separation time of about 500 - 2500 years. Second, the correlation level of Nias and Mandailing languages ​​is 33%. The two languages ​​are also in the same family or family with a separation time of about 500 - 2500 years. Third, the kinship level of the Mandailing and Angkola languages ​​is 71.5. The two languages ​​are also classified in one family or family with a separation time of about 500 - 2500 years.

Keywords: Angkola, Correlations, Language Mandailing, Nias, .
Effect of Advertising, Product Price, and Discount on Consumer Purchase Decision in Online Shopping During the COVID-19 Pandemic at PT Map Aktif Adiperkasa, Tbk
Authors: Khymel Sheren , Situmeang Rosinta Romauli , Sari Winda
Published: July 2022

The research objective is to analyze effect of advertising, product price, and discount on consumer purchase decision in online shopping during the COVID-19 pandemic at PT Map Aktif Adiperkasa, Tbk. This type of research is a type of quantitative research. The population in this study were online shoppers PT Map Aktif Adiperkasa, Tbk. which is located in Medan City and Central Jakarta during the corona virus disease 2019 (COVID-19) pandemic 2020-2021. For this reason, samples taken from the population must be truly representative. So the sample in this study was 100 respondents. The method of analysis in this study using multiple linear regression analysis. Multiple linear regression analysis consists of partial hypothesis testing (t test), simultaneous (F test), and coefficient of determination (R2). The results showed that partially advertising has no significant effect on consumer purchase decision in online shopping during the COVID-19 pandemic at PT Map Aktif Adiperkasa, Tbk. Product price has significant effect on consumer purchase decision in online shopping during the COVID-19 pandemic at PT Map Aktif Adiperkasa, Tbk. Discount has significant effect on consumer purchase decision in online shopping during the COVID-19 pandemic at PT Map Aktif Adiperkasa, Tbk. Simultaneously, advertising, product price, and discount have significant effect on consumer purchase decision in online shopping during the COVID-19 pandemic at PT Map Aktif Adiperkasa, Tbk. The coefficient of determination found that 13.6% of consumer purchase decision could be explained by the relationship between advertising, product price, and discount, while the other 86.4% were not explained by the variables studied in this study.

Keywords: Advertising, Product Price, Discount, Consumer Purchase Decision.
Factors Affecting Firm Value with Dividend Policy as a Moderating Variable in Manufacturing Companies Listed on the Indonesia Stock Exchange
Authors: Permata Sari Sinaga Dewi Indah , Arif Nasution Abdillah , Abubakar Erwin
Published: July 2022

Firm value is the market value of a company's equity plus the market value of debt. The value of the company can describe the state of the company. Many factors affect the company's value, including investment decisions, company size, profitability, and institutional ownership.
This study is a quantitative study that aims to determine the effect of investment decisions, firm size, profitability, and institutional ownership on firm value. The research population is manufacturing companies listed on the Indonesia Stock Exchange. Determination of the sample using inclusive criteria means 26 companies x 10 years = 260 issuers. The data collection method uses a documentation study based on the company's financial statements, and data analysis uses a panel data regression program (Eviews). The results of research and data analysis using the Eviews program prove that investment decisions (Price to Earnings Ratio), Company Size (Ln total assets), Profitability (Return On Equity), and Institutional Ownership (INSWN) have a simultaneous effect on a firm value (p = 0.000< 0.05). Investment decisions (Price to Earnings Ratio) partially affect the firm value (p=0.018<0.05). Total assets partially affect firm value (p=0.013>0.05). Profitability (Return On Equity) has a partial effect on firm value (p = 0.000 <0.05). Institutional ownership partially affects firm value (p=0.000<0.05). Dividend policy is proven to moderate the effect of investment decisions (Price to Earnings Ratio), Firm Size (Ln total assets), Profitability (Return On Equity), and Institutional Ownership (INSWN) on firm value (p<0.05). This research suggests that the manufacturing companies listed on the Indonesia Stock Exchange pay more attention to aspects that affect the firm value so that the firm value can be further increased.

Keywords: Investment Decision (PER), Company Size, Profitability (ROE), Institutional Ownership (INSWN), Firm Value (PBV) .
Strengthening Digital Communication in the Era of the COVID-19 Pandemic and its Implementation in Indonesian Society
Authors: Suhita Damayanti
Published: July 2022

In a pandemic situation since March 2020, everyone has to do all activities at home or stay at home, starting from work, study, literacy, and others. In fact, mobility is now increasingly limited, and this makes people unable to travel arbitrarily. This has an impact on the way people live, such as with the economy, health, and education. Now that technology is here to make it easier for Indonesian people to be literate, we don't need to go out to go to the offline library, just sit back and relax at home. In Indonesia, digital literacy was initiated by the Ministry of Education and Culture under Muhadjir Effendy in 2017 to counter hoaxes, but digital literacy has begun to be felt by the benefits since the pandemic rocked the world. But there are still those who are ignorant or don't even know what to pay attention to in digital literacy. This paper would like to discuss about how to strengthen digital communication in the era of the covid 19 pandemic and its implementation in Indonesian society. The purpose of this study is to describe the strengthening of digital literacy, its development, and its implementation in Indonesian society. The method used in this research is descriptive qualitative with a literature study approach. The results of the study show that there are various elements in digital literacy, namely cultural, cognitive, constructive, communicative, confident, creative, critical, and responsible. In addition, through photo-visual literacy, reproductive literacy, branched literacy, information literacy, emotional social literacy, and real-time thinking literacy.

Keywords: pandemic, digital literacy, millennial generation, challenges, stay at home.
Analysis of Effect of Work Discipline, Compensation, and Work Culture on Employee Performance at PT Hannochs Medan
Authors: Tania Kimberly Clementin , Nazmi Hendra , Manik Heri Samuel
Published: July 2022

The purpose of this study is to analyze analysis of effect of work discipline, compensation, and work culture on employee performance at PT Hannochs Medan. The type of research used is explanatory. The population in this study were 256 representatives. To determine the sample size, the researcher used the slovin’s formula. According to the results of slovin's formula, the number of samples was 156 respondents. The analysis used in this study using multiple linear regression analysis. Multiple linear regression analysis using partial (t) test and simultaneous (F) test. The results show that partial (t), work discipline has a significant effect on employee performance. Compensation has a significant effect on employee performance. Work culture has a significant effect on employee performance. Simultaneous (F) test shows that work discipline, compensation, and work culture have a significant effect on employee performance.

Keywords: Work Discipline, Compensation, Work Culture, Employee Performance.
The Effect of Leverage, Liquidity, Profitability, and Growth on Dividend Policy with Firm Size as a Moderating Variable at Consumer Goods Industry Manufacturing Companies Listed on the Indonesia Stock Exchange 2015-2020
Authors: Agnes Sagala Ratih Febby , Maksum Azhar , Abubakar Erwin
Published: July 2022

This study examines and analyses the effect of Leverage, Liquidity, profitability, and growth on dividend policy with firm size as a moderating variable in consumer goods industrial manufacturing companies listed on the Indonesia Stock Exchange from 2015 to 2020. This study uses the purposive sampling method to use secondary data with the sample of 39 manufacturing companies in the consumer goods industry sector. The data analysis technique used moderation regression analysis using the SPSS 21 application program.
The regression results from this study showed that leverage partially did not affect dividend policy. Meanwhile, Liquidity, Profitability, and Growth partially have a significant positive effect on dividend policy. Furthermore, Leverage, Liquidity, Profitability and Growth significantly affect companies' dividend policy in the consumer goods sector listed on the IDX in 2015-2020. Firm size can moderate leverage's negative influence on dividend policy. Firm size can also moderate the positive effect of Liquidity, Profitability, and Growth on the dividend policy of consumer goods sector companies listed on the IDX in 2015-2020.

Keywords: Leverage, Liquidity, Profitability, Growth, dividend policy, Firm Size.
The Effect of Independent Commissioners, Audit Committee, Audit Quality, and Leverage on Financial Statements Integrity with Firm Size as a Moderating Variable in Banking Companies Listed on the Indonesia Stock Exchange
Authors: Putra Dedi Ansyah , Yahya Idhar , Fachrudin Khaira Amalia
Published: July 2022

A financial statement's integrity is the extent to which the financial statements presented show accurate and honest information. The research objective was to analyze the effect of the independent commissioners, audit committee, audit quality, and leverage on financial statement integrity in banking companies listed on the Indonesia Stock Exchange. This study will also examine firm size variables used as moderating variables in the research model. The population in this research are banking companies listed on the Indonesia Stock Exchange period 2015 to 2019. The method used in determining the sample is a purposive sampling method based on specific criteria and selected as many as 31 companies. The total of observations used was 155 observations. The type of data used is secondary data. Data analysis techniques used are Panel data regression analysis with multiple regression test and moderating interaction Test with the help of Eviews.
The results of this study indicate in alpha five percent (0.5%), audit committee, audit quality, and leverage have a significant positive effect on financial statement integrity.
In contrast, independent commissioners have no significant effect on financial statement integrity. The results of this study also show that firm size can moderate the impact of the audit committee and audit quality on financial statement integrity. However, firm size cannot moderate the effect of independent commissioners and leverage financial statement integrity.

Keywords: Independent Commissioners, Audit Committee, Audit Quality, Leverage, Financial Statement Integrity.