bluuebunny/crossref_metadata_2025 huggingface dataset:
The future of work: Remote work in the emerging new normal
Authors:   Medgar Evers College, City University of New York, USA, J. Best Simon
Published: September 2021

What HRM structures and schedules are most likely to characterize the post-pandemic period? This paper, taking a multidisciplinary approach to the analysis of the future of work and hybridized workforces, straddles the fields of HRM, business economics, and organizational behavior. It seeks to provide insights into the evolving post-pandemic’s new normal. The gains from the vaccination efforts in the US, in particular, are leading to shifts from the pandemic’s dismissal as a short-term phenomenon, to one that is now manageable. This paper, hence, analyzes the emerging trends and patterns that will most likely influence and shape the use of the human resource in companies, especially within the United States of America. It highlights the various discovered types, intensities, modalities, related to a range of worker types and work conditions associated with hybridized HRM, and the expected patterns and changes in employer-employee relationships likely to be maintained or expanded, that, informed by the Gratton framework of time and place. The paper maintains that not all work types are suitable for remote work. Additionally, certain gender biases are retained in the pandemic induced HRM hybrid models, while some are even reinforced. New work-life balance issues have also entered into work structuring and scheduling arrangements, with implications for the education attainment of the young, especially if, for example, hybrid education delivery becomes more widespread. The paper concludes with suggested research recommendations prompted by the pandemic’s activated sectoral labor supply challenges.
The energy-environmental efficiency of the existing building stock through morphological-constructive solutions: the case study of a single family building in Sicily
Authors: F. Blundo  , F. Foti  , F. Leone  , F. Nocera  , L. Savoca
Published: September 2021

The protection of environmental resources, both energy and natural, is a current and urgent necessity for contemporary society. Since the building sector is responsible for a large part of energy and environmental consumption, the possibilities for savings in this sector are vast, starting with improving the quality of buildings. Therefore, the ecological orientation of the construction sector today represents a valid and necessary response to the sustainable development requirement to reduce the pressure on the environment in terms of impacts and consumption of resources. This is especially true if applied to the recovery and energy-environmental efficiency of the existing building stock. The aim of this study is to propose a methodology of "good practices" for the rehabilitation of non-historic buildings in terms of formal, functional, comfort and environmental quality, a methodology that combines the theme of architectural quality with that of environmental sustainability. In particular, the aim is to demonstrate how morphological-constructive solutions can be a valid response to the requirements of energy performance, environmental sustainability and occupant wellbeing. To this end, a case study of the renovation of a single-family building from the 1970s in the municipality of Ispica is reported, in which the proposed methodology is applied.
Bi6Te2-xRxO13 (R=Ti, Si, Ce) Systems: A Investigation for Fuel Cell Applications
Authors: K. D. Ferreira  , G. Gasparatto  , G.P. Viajante  , J.F. Carvalho
Published: September 2021

In recent years, the increase of economic and environmental problems related to energy generation has increased researches at renewable energy sources. Among others, the fuel cells excel as promising alternative technology of electricity generation and materials science is an ally in the search for better and more efficient materials for this application. In particular, solid-state ionic conductors represent functional materials with promising advantages for fuel cells, as is the case of Bi2O3-based oxygen ion conductors, however, they need to have its cubic phase stabilized at room temperature. This paper presents a study of the Bi6Te2-xRxO13 (R = Ti, Si and Ce) systems for such an application. Solid state reaction was used to materials synthesis. The 3Bi2O3:2TeO2 system present two phases, an orthorhombic one (Bi6Te2O15) stable at room temperature and another high temperature cubic (Bi6Te2O13). Experiments of substitution of Te ions by Ti, Si and Ce ions using the Bi6Te2- xRxO13 matrix were done intending to stabilize the cubic phase at room temperature and the results are presented as well as discussed here.
Solar Energy as an alternative source in boiler economizers
Authors: A. Daniel Pereira de Oliveira  , B. Aylton José Alves  , C. Bárbara Morais Arantes
Published: September 2021

This study sought to analyze the viability of the use of solar energy, for the operation in boiler economizers, in the replacement of the thermal energy of the exhaust gases. The experiment was divided in two steps: analysis of the boiler yield with different feed water temperatures and addition of the solar field to the initial set. For the modeling of the economizer-boiler set, the software used was Engineering Equation Solver (Software F-Chart, Wisconsin, USA). The technology chosen for the second stage was the high-pressure vacuum solar collector, installed at the inlet of the feed water heater. The thermal power of 2014W (per plate) and the solar radiation peak of 1000W / m² were standardized, taking into account the calculations for a steady state system at noon. The variable was the number of solar panels to be used at the plant. After analyzing the data, it was verified that the efficiency varied by approximately 7.4%, when the feed water temperature was increased by 20 ° C, close to 48 ° C. In order for this variation to occur, it was necessary to use 50 plates.
Adaptive Notch Filter based WECS for Unbalance Mitigation
Authors: M.K. Abbas  , M. Mokhtar  , M. I. Marei  , A.A.El-Sattar
Published: September 2021

The accelerating spread of distributed energy resources among the LV networks has revealed their adverse impact on voltage profiles, power quality and protections along the network. On the contrary, since they are essentially interfaced with the network through power electronic converters that can be exploited to enhance power quality. Voltage regulation, unbalance and harmonics mitigation are some examples of the functions that can be implemented through these converters. This paper presents a wind energy conversion system (WECS) with a back-to-back converter performing its mere function of maximizing wind energy capture and regulating output active and reactive power. Added to these basic functions, ancillary services are provided to a local load and MV grid. Voltage regulation of the load voltage at different loading conditions is achieved. Extraction of load unbalance is investigated through different algorithms. Adaptive Notch Filter (ANF) has demonstrated a leading response over the conventional methods in detecting the symmetrical components under different unbalance conditions. Unbalance in grid currents is then effectively managed and the currents from/to the MV grid are ensured to be balanced. The system is simulated using PSCAD/EMTDC and results are presented to confirm validity of the proposed methods.
Study of the second‐generation of CdTe and CIGS thin film PV modules under natural sunlight conditions
Authors: K. Dyndał  , J. Sanetra  , K.W. Marszalek
Published: September 2021

There is a significant amount of research in the literature concerning the performance of solar panels operating during outdoor exposure, but the full topic is not yet exhausted. One of the reasons is that the photovoltaic cell technology is constantly evolving. In this paper, a comparison of two types of CdTe and CIGS modules operated with a nominal power of 80 W and 140 W, respectively is studied. The module tests were performed under external conditions during autumn, winter, spring, and summer from October 2019 to July 2020 in the temperate climate of Miękinia, South Poland. The photovoltaic panels were connected to the electric grid via microinverters. During the tests, the temperature of the panels was monitored. To determine the influence of solar radiation on the energy conversion efficiency of photovoltaic panels, a pyranometer installed in the plane of the panels was used. Based on the monitoring of the atmospheric conditions and the measurement of instantaneous power, the efficiency of the modules is determined.
Analysis of an automotive thermoelectric generator coupled to an electric exhaust heater to reduce NOx emissions in a Diesel-powered Euro VI Heavy Duty vehicle
Authors: A. Massaguer  , E. Massaguer  , J. Ximinis  , T. Pujol  , M. Comamala  , L. Montoro  , J.R. Gonzalez  , P. Fernández-Yañez  , O. Armas
Published: September 2021

This study presents a new approach to minimize the amount of NOx emitted by diesel engines of Heavy-Duty Vehicles during low engine regimes and low gases temperature conditions. We propose the addition of an electric Exhaust Gas Heater (EGH) to make the SCR system inject the urea solution at low engine regimes. The second part of this study focuses on the viability to use an Automotive Thermoelectric Generator (ATEG) to generate the energy required by the EGH and thus avoiding the need to consume electrical energy from the vehicle’s system. This EGH-ATEG system is designed to be energetically closed, so there is no extra consumption of fuel. Experimental results show that NOx emissions reduce up to 80% when an EGH is added to a standard diesel-powered Euro VI Heavy Duty truck configuration. Simulations show that an ATEG installed downstream of the aftertreatment system can produce the energy required by the EGH. This system can improve SCR efficiency up to 55% during low engine regimes.
Permanent Closed-Loop Operation as a Measure for Improving Power Supply Reliability in a Rural Medium Voltage Distribution Network
Authors: G. Štumbrger  , M. Rošer  , B. Polajžer
Published: September 2021

Power supply reliability is one of the critical elements of power quality. Its improvement in medium voltage distribution systems in urban areas is typically achieved by cabling. Unfortunately, this approach is often too expensive to be applied in rural areas. One of the possible alternative solutions that can be used in rural medium voltage distribution networks is permanent closed-loop operation. It requires the introduction of additional reclosers with properly parametrized protection relays enabling directional protection. This paper focuses on the case study performed in the 20 kV rural distribution network of Elektro Celje d.d.. Two feeders, where the reliability of the power supply was low, were analyzed. Results of techno-economical evaluation eliminated cabling as a viable solution. The permanent closed-loop operation was selected and implemented after proper placement and parameterization of relays with directional protection functions. The results of two years operation in permanent closedloop arrangement of feeders show substantial improvement in the reliability of power supply.
Comparative study of photovoltaic self-consumption alternatives considering the Spanish legal framework
Authors: S. de la Torre  , J. Á. Lagos
Published: September 2021

This work presents a comparative study focusing on the alternatives that a small photovoltaic self-generating group of consumers face within the new legal framework in Spain. Several alternatives are presented, simulated and discussed for a representative photovoltaic generating plant serving a group of consumers that could be associated. Conclusions are duly drawn, showing which options are most favourable for the consumers. Also, a brief description of the most important features of the new legislation is presented.
IoT Monitoring System for Applications with Renewable Energy Generation and Electric Drives
Authors: Maria G. Ioannides  , Anastasios Stamelos  , Stylianos A. Papazis  , Athanasios Papoutsidakis  , Vasilios Vikentios
Published: September 2021

Internet of Things IoT developed for monitoring, control, and management of sectors such as Smart Cities, Energy, Environment, Transport, Manufacture, Industrial Automation, Maritime, Healthcare, Education, etc, by interconnecting devices over internet. New sectors emerged in renewable energy systems, industrial motion drives, sensors and actuators. This article presents the design, and development of specific IoT applications for wind energy generating units, and electric drives. IoT technologies in the control systems of electric machines, mainly in applications of motor drives, and wind energy generating systems, contribute to improved monitoring, and management of performance, and to possible savings of energy. The experimental configurations upgrade laboratory infrastructure and offer new teaching and research perspectives to engineering education.
Improving the overall thermal performance of parabolic trough solar collectors using porous media
Authors: Maria G. Ioannides  , A. Cammi  , L. Savoldi
Published: September 2021

The use of a porous insert constituted by a metalmatrix of copper Raschig Rings is proposed here for parabolictrough solar collectors. The CFD analysis, based on a well-established numerical model, allows computing a significantincrease in the thermal performance of the tube considered in theanalysis, when equipped with the porous insert, with respect to asmooth pipe. The useful power grows up to ~96 % of theabsorbed incident power. A reduction of a factor of s in theradiative and convective losses is computed, due to a large dropin the pipe surface temperature. The length of the porous inserthowever,should be carefully evaluated in view of the significantadditional pressure drop caused by the insert.
Techno-Economic Assessment of Concentrated Solarand Photovoltaic Power Plants in Brazil
Authors: Guilherme de Sousa Torres  , Tulio Andre Pereira de Oliveira  , Anesio de Leles Ferreira Filho  , Fernando Cardoso Melo  , Elder Geraldo Domingues
Published: September 2021

The need for a diverse energy matrix has been promotinga favorable environment for integrating new renewable energy sources,such as Concentrated Solar Power plants (CSPs). Nonetheless, as aconsequence of the incipient solar generation via CSPs in Brazil,there is a unsatisfactory number of researches that handle technicaland economic assessments of CSP plants performance on this country.Given this scenario, this study proposes an assessment of the techno-economic viability of the implementation of 100 MW CSP plants inBrazil, considering the Solar Tower (ST) systems, Parabolic TroughCollectors (PTC), Linear Fresnel (LFR) Reflectors and Dish Stirling(DS) Systems, and comparing the results to a photovoltaic (PV) plant.This study utilizes project data of power plants collected from therelevant literature and applies it to the city of Bom Jesus da Lapa,Brazil. The CSP techno-economic viability is evaluated through theanalysis of the annual energy generated, as well as the economicviability indicators, such as the Net Present Value, the Internal Rate ofReturn, the Discounted Payback and the Levelized Cost of Energy, andthrough a single-variable sensitivity analysis. This analysis employs thediscounted cash flow model, considering the energy trade in a RegulatedContracting Environment.
Determination PV Module Technical Condition
Authors: M. Belik  , O. Rubanenko
Published: September 2021

The paper focuses on the determination of technical conditions and degradation of photovoltaic modules installed in grid-on operated photovoltaic systems in Ukraine and the Czech Republic. Detected malfunctions of PV modules are classified and Fault Tree Analyses (FTA) is created for particular PV modules. For assessment of the technical condition of the PV modules it is proposed to use residual resource index (RRI), that is being successfully used for determination of technical condition of transformers, breakers and synchronous generators. The main contribution is the method for the detection of photovoltaic modules condition with the use of a neuro-fuzzy network based on the experience of operational (maintenance) staff of particular plants.
Wind energy system in Ambocas-Ecuador: distributed generation and energy quality
Authors: O. Cabeza-Gras  , V. Jaramillo-García
Published: September 2021

n this communication we present the construction ofa wind farm,WF,with 10 MW of nominal power.This WF will increase the quantity and quality of electricity in the area of Ambocas, Loja, Ecuador, strengthen a systemwithmanyvoltagedrops. The place chosen is ideal, because it is long from population, in a hill side near an existing road. Wind is persistent andhas aconstant orientationall along the year. The generated power will be connected with the electricity system in the Portovelo Substation, which is about 12 km from the WF site. We have calculated the expected electricity production all along the year taking into account allimportant data to simulate successfullythe WF operationin real conditions.We have also modelledthe interconnexion of the WF with the substationand itseffect in the 69 kV bar.Finally, a brief economical analysis of the project gives an annual average profit higher than3.5USDmillionwithout taxes, while the inversion would be cancelledin less than 5 years of the 20 ones planned for the WF infull operation.
The Inclusion of Power Gyrator Topologies as Energy Processing Cells in Photovoltaic Solar Conversion
Authors: Herminio Martínez-García  , Encarna García-Vílchez
Published: September 2021

This paper will provide a classification of high efficiency switching power-gyrator structures and their use as cells for energy processing in photovoltaic solar facilities. Having into account the properties of these topologies presented in the article, their inclusion in solar facilities allows increasing the performance of the whole installation. Therefore, the design, simulation and implementation of a Gtype power gyrator are carried out throughout the text. In addition, in order to obtain the maximum power from the photovoltaic solar panel, a maximum power point tracking (MPPT) is mandatory in the energy processing path. Therefore, the practical implementation carried out includes a control loop of the power gyrator in order to track the aforementioned maximum power point of the photovoltaic solar panel.
Effects of Pulse Frequency on Performance of Electrochemical Cooling Water Treatment for Cooling Tower of Water-Cooled Chiller
Authors: Le Minh Nhut  , Duong Huynh Minh Nhut
Published: September 2021

Due to the rapid economic development in recent years, water-chiller is being used more and more in hotels, restaurants, resorts, and industrial zones in Vietnam. The cooling tower’s cooling water quality is an important factor in determining the effect on electrical consumption and the coefficient of performance of a water-cooled chiller. Therefore, it is necessary to maintain the quality of cooling water during the operation time of the water-cooled chiller. The aim of this work is to investigate the effects of the pulse frequency and operational parameters such as current density, pulse duty cycle, and energy consumption on the performance of removing hardness ion of electrochemical cooling water treatment for the cooling tower of the water-cooled chiller. The results show that the highest efficiency of the total hardness removal corresponding to a pulse frequency of 1 kHz, a pulse duty cycle of 0.7, and a current density of 80A/m2.
VARIATION OF RIAU MALAY LANGUAGE IN ROKAN HILIR REGENCY
Authors: . Nurmayana . , Saragih Amrin . , Murni Sri Minda
Published: September 2021

ABSTRACTLanguage variation is the study of those features of language that differ systematically as compare different groups of speaker or the same speaker in different situation. As a multicultural country, Indonesia has so much variety of language. In addition to the official language, Indonesian people also have regional languages in each region. Rokan Hilir is one of them. Rokan Hilir, where the majority of the population is Malay, has a special regional language, namely the Malay language. This descriptive qualitative study identifies the variation of Riau Malay language in Rokan Hilir Regency review by analyze realizations of variation Riau Malay language in Rokan Hilir Regency. To understand the Realization of variation Riau Malay language in Rokan Hilir observation and interview were used in this study. The result indicates that realization of language variation were found there, phonology that is found as the most kinds of realization of  language variation for about 21 times appearing or (53.8 %). Followed by Lexical 16 times or 41.1%, then grammar only found 2 times or 5.1% Keywords: Language Variation, Riau Malay Language, Rokan Hilir
Environmental training and management at Federal Institute of Education
Authors: Borges Aurélio Ferreira , Stein Clever Reis , Moraes Raquel Nogueira de , Borges Marco Túlio Silva
Published: September 2021

The objective was to characterize the Environmental Formation received by undergraduate students from the Federal Institute of Education. The adaptation of the Environmental Training Questionnaire (ETQ) was developed, translated into Portuguese. The ETQ was administered to a sample of 166 undergraduates. In this, the reliability and sociodemographic variables were evaluated. The psychometric properties found attest to the quality of the Environmental Training measurement instrument. The results revealed that the Environmental Education of students, in the curricula of undergraduate courses, varies according to the undergraduate course and the age of the university students.
Social responsibility during the COVID-19 pandemic (The Republic of Bashkortostan)
Authors: Gaisina Lyutsiya Mugtabarovna , Shayakhmetova Rimma Rafaelevna , Mingazetdinova Rimma Flyurovna , Minakov Ilya Рavlovich , Shakirova Elvira Venerovna , Rakhimkulova Leysan Askhatovna
Published: September 2021

Analysis of modern prevention concepts makes it possible to single out individual-oriented preventive concepts, and concepts of socio-political orientation. Individually oriented prevention involves the use of professional assistance at the earliest stage. The consequences of a social problem or individual disturbance must be promptly counteracted, which requires knowledge about the social space and living conditions of the individual, since such knowledge provides current planning and/or strategic intervention in the situation. Most western concepts of socio-political prevention are based on the competence model. Therefore, individually focused preventive strategies are aimed at correcting, regulating life goals and actions of individuals in accordance with the standards of normativity prevailing in society. Socio-political prevention is aimed at forming structures that should involve the individual in constructive, autonomous interaction with the environment and within it. The article below is devoted to the analysis of these problems.
Changes in the ethnic picture and its impact on the internal political situation in the Bosporus after Rheskuporis VI
Authors: Astakhov Ivan Alekseevich
Published: September 2021

The article examines the influence of ethnic change in the North Black Sea region on the internal political situation in the Bosphorus kingdom in the mid-6th century – the first quarter of the 6th century AD. The main ethnic groups that appeared in the Bosphorus at the specified time, the degree of their influence on the state institutions of the kingdom and the nature of political changes are determined. It is assumed that, as a result of the movement of barbarian groups throughout the North Black Sea region, representatives of these groups have taken power in the Bosphorus kingdom. We can refer to these Sarmatian-Alan representatives and Gothic nobility. With the appearance of the Huns in the North Black Sea region, the Bosphorus falls into the sphere of influence of the Huntribal union, under the de facto rule of the Gothic nobility. With the appearance in the Northern Black Sea region of the Huns-Utigurtribes, power in the Bosphorus returns to the hands of the pro-Roman nobility, to which King Diuptun can be assigned.
Do Fund Size, Style and Rating Explain Performance?
Authors:   Colorado Mesa University, USA, Ongaki Jacob M
Published: September 2021

The purpose of this quantitative investigation was to examine whether performance (1-Year, 3-Year, and 5-Year annual returns) differences exist among fund categories by size and style (large-cap growth, large-cap blend, mid-cap growth, and small-cap growth) and fund ratings (5-Star and 4-Star) controlling covariate variables (standard deviation, turnover rate, and top-10 holding) of the United States equity MFs. Morningstar Inc. provided an insightful measure of fund performance annual returns and fund efficacy ratings. The study utilized the Analysis of Covariance and Multivariate Analysis of Covariance methods. The investigation revealed that the large-cap growth fund category produced superior annual returns than other fund families. The five-star-rated funds performed better than the four-star-rated funds. Turnover and top-10 percentage asset holdings had a statistically significant effect on fund annual performance. Investors and asset managers should consider the fund style, size, fund ratings for making short-term, medium, and long-term financial investment decisions. Keywords: mutual fund, fund style, fund size, fund ratings, market return
The Miles and Snow Business Strategy Typology and the Adoption of Management Accounting Practices
Authors:   Faculty of Accountancy, Universiti Teknologi MARA, Malaysia, Tuan Mat Tuan Zainun , Subri Ammar Syafiq ,   KPJ Perlis Specialist Hospital, Perlis, Malaysia, Mohd Fahmi Fadzlina ,   Faculty of Accountancy, Universiti Teknologi MARA, Malaysia
Published: September 2021

Changes in the business environment requires that a company adopts a more adaptive strategy. A business strategy is not just about planning, but it needs to be supported with meaningful information. Management accounting complements a business strategy by providing crucial information, not just limited to cost efficiency, but customer satisfaction and quality management. However, the adoption of management accounting practices (MAPs) is believed to be influenced by strategy. Using the Miles and Snow (1978) business strategy typology model, this study examined the influence of business strategy on the adoption of MAPs, focusing on how the different types of business strategies used in organizations may influence the adoption of MAPs. Data was collected from manufacturing companies in Malaysia. The result showed that most Malaysian manufacturing companies utilized three major classifications of strategies, i.e., defender, prospector, analyzer, and only a few were classified as reactors. The result showed that the adoption level of both traditional and advanced MAPs is also high. Findings from this study indicated an influence of the defender and analyzer types towards adopting traditional MAPs, whereas the prospector type had influenced the adoption of advanced MAPs. Keywords: management accounting practices, business strategy, defender, prospector, analyzer, reactor
Internet das coisas na gestão de resíduos sólidos: revisão sistemática com análise bibliométrica da literatura
Authors: Aragão Júnior Wilson Ramos , Oliveira Júnior Antônio Italcy de
Published: September 2021

A Internet das Coisas (IoT) é uma tecnologia da Indústria 4.0 que vem sendo apontada na atualidade como um mecanismo capaz de auxiliar na construção das cidades inteligentes e sustentáveis. Dentro deste contexto, a gestão de resíduos sólidos (RS) é um dos problemas das cidades a serem solucionados. Assim, este artigo realizou uma revisão sistemática com análise bibliométrica, buscando compreender a relação e a aplicação da IoT na gestão de RS. O trabalho foi organizado em quatro etapas: Busca de artigos em base de dados, Meta-análise, Análises Bibliométrica e Sistemática. A busca de dados foi realizada na base da Scopus, selecionando os artigos usando o método PRISMA. Na meta-análise foram extraídos os dados bibliométricos e específicos das publicações. A etapa de análise bibliométrica foi realizada quantitativamente e qualitativamente usando os softwares VOSviewer e Microsoft Excel. Na análise sistemática, a informação contida nos estudos foi sintetizada. Os 28 artigos incluídos na análise foram publicados entre 2013 e 2020. A maioria dos autores e das instituições é originária de países da Ásia e da Europa, demonstrando a necessidade de ampliação global de estudos. Nas redes de coautoria e de citação, observou-se pouca relação entre os autores dos documentos. Em relação as redes de coocorrência entre as palavras, notou-se enfoque na utilização de tecnologias de IoT para automatização de lixeiras com intuito de melhorar o gerenciamento dos RS. Ficou evidente a grande relevância do emprego da IoT na gestão de RS para construção de cidades inteligentes e sustentáveis.
EDITORIAL: New Academic Year and New Beginnings
Authors: Czerkawski Betül
Published: September 2021

This volume introduces three especially enlightening and astute works that aid in our navigation and understanding of learning technologies. First is Rebecca Smith’s article, which determines that technology is compelling in its ability to increase teacher confidence. The second is by Donna Hess, which exemplifies that instructional design principles backed by a theoretical approach are critical in conceiving compelling foreign language practices. The third, by Megan Motto, establishes that routine practice and contemplation with a coaching peer facilitates more efficient technology use within the classroom. These three papers come to the conclusion that technology within the classroom does not assure achievement unless that technology is used alongside a theoretical and pedagogical foundation. Furthermore, our journal will be undergoing important changes, as I am stepping down as editor and Dr. Gerald Ardito will assume my position in January of 2022.
Connecting political ecology of health and disease with ‘structural stigmatization’: Declining use of forest foods and medicines in Kédougou, Senegal
Authors: Lucey Taylor Keach , Grimm Kerry
Published: September 2021

Recent political ecology (PE) frameworks have evolved to identify power disparities that have consequences for human health and disease development. These power disparities can lead to unequal access to health information, natural resources (e.g. farmland, clean water), micronutrients, healthcare, and other elements necessary to maintain healthy bodies and reduce risk of disease. While many PE and political ecology of health and disease (PEHD) frameworks examine access in terms of limitations, few examples highlight effects from increased access to resources. This article uses a PEHD lens to examine how diets and health in rural Kédougou, Senegal are influenced by increased access to globalized foodstuffs and stigmatization of local foods and medicines. A better understanding of dietary decision-making is critical in understudied regions such as Senegal because West Africa has a rapidly expanding population and is projected to be among regions of the world that are most burdened with non-communicable diseases (NCD). We used qualitative methods to: 1) describe current and historic diets in Kédougou; 2) identify perceived changes about diet, health, and access to resources; and 3) understand what might be influencing these changes. Our article shows that increased access and limited access are interconnected because increased, regular access to globalized foods and medicines could factor into reduced access to local foods and medicines. We found that social context strongly influenced use of local forest foods and medicines, even leading to a gradual stigmatization of using these resources.
Assessment of right ventricle in pulmonary arterial hypertension with three-dimensional echocardiography and cardiovascular magnetic resonance
Authors: Lattanzio Mariangela , Scelsi Laura , Golino Michele , Lattuada Maddalena , Raineri Claudia , Turco Annalisa , Giuntini Chiara , Ceriani Francesca , Curti Marco , Bonelli Andrea , Piacentino Filippo , Venturini Massimo , Ghiringhelli Sergio , Morandi Fabrizio , De Ponti Roberto , Ghio Stefano
Published: September 2021

Aim

To correlate 3-D Echo and CMR RV parameters and to verify whether they are similarly related to the clinical conditions of patients with pulmonary arterial hypertension (PAH), a disease in which the RV plays a crucial prognostic role.

Methods

We enrolled 34 consecutive PAH patients followed by our PAH clinics. All patients underwent a 3-D Echo and CMR assessment of RV volumes and functions in the same day. The presence or absence of correlation between major findings was investigated; functional RV parameters were also analyzed in relation to 6-min walking test (6MWT) results and BNP/Nt-proBNP plasma levels. Twenty-four subjects served as controls.

Results

Good agreement was found between 3-D Echo and CMR measures of RV volumes [RV-end-diastolic volume (r = 0.72, P < 0.0001), RV-end-systolic volume (ESV) (r = 0.80, P < 0.0001)] and function [RV-EF (r = 0.73, P < 0.0001), RV-ESV/SV (r = 0.83, P = 0.001)] for all the subjects of the study. These correlations were stronger in PAH patients than in control subjects. Importantly, 3-D Echo and CMR RV-EF and RV to pulmonary arterial coupling (RV-ESV/SV) similarly correlated with BNP/Nt-proBNP levels and with functional capacity measured at 6MWT in the PAH patients group.

Conclusions

3-D Echo demonstrated a significant agreement with CMR in the assessment of RV volume and function in PAH patients. Both techniques showed a similar correlation with clinical and prognostic parameters. The use of 3-D Echo should be amply boosted in the real-world clinical evaluation of PAH patients.
The effect of different medium-chain fatty acids, calcium butyrate, and salinomycin on performance, nutrient utilization and gastrointestinal tract of chicken of Polish Green-Legged Partridge hen
Authors: Perz Katarzyna , Kaczmarek Sebastian , Józefiak Damian , Nowaczewski Sebastian , Bogucka Joanna , Ziółkowska Ewa , Górecki Marcin , Hejdysz Marcin
Published: September 2021

The present study aimed to determine the effect of diets supplemented by feed additives, on the growth performance and digestive tract functioning in chicken of Green-Legged Partridge hen (GLPH). Two types of diets were used. Both the “low-digestible” (LD) diet characterized by high level of crude fiber and lard, and the “high-digestible” (HD) diet characterized by low content of crude fiber and soybean oil were supplemented by different additives such as 0.34% DM (dry matter) salinomycin, 0.30% DM medium-chain triglycerides (MCT), 1.00% DM calcium butyrate (CB), or 0.85% DM medium-chain fatty acids (MCFA). The experiment was conducted on 960 one-day-old male chickens of GLPH, randomly divided into 10 treatment groups. One group consisted of 12 replications (each with 8 birds). Chickens fed HD diet presented significantly higher body weight gain (BWG) in 15–56 days and also 0–56 days of experiment and lower feed conversion ratio (FCR) during whole time (0–56 days) of experiment (P<0.05). Addition of CB and MCFA did not affect the differences in BWG (15–56; 0–56 days) and FCR (15–56 days) in comparison with the control diet. Significant interaction between the type of diet and additives (P<0.05) was observed for feed intake (FI) throughout the experiment. The highest FI was found on LD diet with CB. On LD diet, all additives resulted in significantly worse nitrogen retention, however, on HD diet, it was observed only for salinomycin. The additives had no impact on fat digestibility when chickens were fed HD diet. There was significant (P<0.05) lower-fat digestibility when LD diet with MCT, CB, and MCFA was used. The greatest value of nitrogen-corrected apparent metabolizable energy (AMEN) was found on HD diet (P<0.05). The addition of MCT, CB, and MCFA increased the percentage share of ileum, and MCT also significantly increased the percentage share of the liver. The lactic acid bacteria and C. perfringens counts were lower on HD diet (P<0.05). The addition of MCT and CB increased the count of lactic acid bacteria in caeca (P<0.05). Many interactions between experimental factors in this experiment showed that the efficacy of using different feed additives depends on the type of diet. The results suggest that MCFA may be the most beneficial feed additive for GLPH chicken as an alternative for antibiotic growth promoters (AGP).
Great Power, Great Responsibility: Addressing the Underestimated Issue of Central Bank’s Social Responsibility
Authors: Vallet Guillaume
Published: September 2021

This paper deals with the neglected issue of central banks’ social responsibility. Since central banks exert the “structural power” on economies as well as on societies, their power should be regulated and controlled by society through a reliable framework of social responsibility. To that aim, this article sheds light on the ‘why’ and the ‘how’ of central bank’s social responsibility: I suggest reforms in order to increase central banks’ social legitimacy, while being consistent with the mapping out of a new framework of social responsibility.
Prospects of Artificial Intelligence and Machine Learning Application in Banking Risk Management
Authors: Milojević Nenad , Redzepagic Srdjan
Published: September 2021

Artificial intelligence and machine learning have increasing influence on the financial sector, but also on economy as a whole. The impact of artificial intelligence and machine learning on banking risk management has become particularly interesting after the global financial crisis. The research focus is on artificial intelligence and machine learning potential for further banking risk management improvement. The paper seeks to explore the possibility for successful implementation yet taking into account challenges and problems which might occur as well as potential solutions. Artificial intelligence and machine learning have potential to support the mitigation measures for the contemporary global economic and financial challenges, including those caused by the COVID-19 crisis. The main focus in this paper is on credit risk management, but also on analysing artificial intelligence and machine learning application in other risk management areas. It is concluded that a measured and well-prepared further application of artificial intelligence, machine learning, deep learning and big data analytics can have further positive impact, especially on the following risk management areas: credit, market, liquidity, operational risk, and other related areas.
The Evaluation of Block Chain Technology within the Scope of Ripple and Banking Activities
Authors: Kaygin Erdogan , Zengin Yunus , Topcuoglu Ethem , Ozkes Serdal
Published: September 2021

Technological developments have always led to changes in all aspects of our lives. Crypto currency is one of those changes. As a result of those changes, thousands of currencies such as bitcoin, ripple, litecoin and ethereum have evolved and have found a use in business. The present study focuses upon Ripple and tries to explain its effects on banks and business theoretically. It has been stated that the money transfer performed through Ripple is faster and more economical when compared to present systems. Additionally, it has been realised that the present SWIFT system has been influenced by that speed and economy, and therefore taken considerable technologic steps with an effort to improve its system.
تقنية الذكاء الاصطناعي: مقاربة تعليمية من وجهة نظر الأدبيات والنظريات المفسرة للذكاء الاصطناعي
Authors: الزعبوط سُمية
Published: September 2021

هدف البحث إلى الكشف عن أوجه المقاربة بين الذكاء الاصطناعي والعملية التعليمية، واعتمدت وجهات نظر عدد من الأدبيات والنظريات المفسرة للذكاء الاصطناعي بوصفها مشاركة في استقراء المقاربة التعليمية لتقنية الذكاء الاصطناعي، ولتحقيق الأهداف، تم اعتماد نهج النظرية المجذرة للبحث النوعي، باستخدام الأسلوب التفسيري. وأظهرت أبرز النتائج، أن أوجه المقاربة بين الذكاء الاصطناعي والعملية التعليمية تتمثل في إنجاز بعض المهام التعليمية ، وإنجاز مهام المعلم الإدارية، وتغيير المناهج الدراسية وتطويرها، وتقييم الطلبة وتتبع تجاربهم ، وتغيير دور المعلم من ملقن للمعارف، إلى مُعد لخبرات المتعلم داخل البيئة الصفية ومنظم لها. وتمثلت أبرز التوصيات: أن يتفهم المسؤولون أهمية التخطيط لاستخدامات الذكاء الاصطناعي بعناية، مع إشراك الجهات الفاعلة في مجال التعليم، مثل: المعلم والمتعلم.
فاعلية مديري المشروعات في ادارتها تحت الظروف الصعبة للعمل
Authors: الحمدي عبدالكريم , القحطاني فيصل
Published: September 2021

إنّ لإدارة المشاريع أهمّية كبيرة، حيث تساهم في تحويل الأفكار إلى واقع عمليّ من شأنه تعزيز وسائل الإدارة، وتفعيل الاستخدام الأمثل للموارد، وتجزئة الأنشطة الربحيّة، والخدميّة. تعرف إدارة المشاريع Project Management على أنها عملية تنظيم وإدارة الموارد المتاحة في المشاريع، مثل: الموارد البشريّة أو الموارد المادية، بطريقة يمكن من خلالها إنجاز المشروع بنجاح في ظل مراعاة عوامل الجودة والوقت والتكلفة المتاحة. والهدف من ادارة المشاريع: زيادة الانتاجية، تقليل التكاليف، والحد من المصاريف، إنهاء المشروع في الوقت المحدد المتفق عليه، إنجاز المشروع حسب الميزانية المقررة، تنفيذ جميع المتطلبات مثل: ضمان الجودة، إرضاء جميع أطراف المشروع من العميل إلى فريق المشروع. ولكن هناك تحديان رئيسيان يواجهان أي عملية لإدارة المشاريع، تجعلان عملية ادارة المشروع صعبة للغاية، حيث يعتبر إتمام إنجاز المشروع بالتكاليف والوقت المحدد من أول التحديات التي تواجه أي مدير مشروع، بالإضافة إلى تحقيق الوضع الأمثل والأنسب للمشروع، وهو من أكبر التحديات وأكثرها طموحاً، حيث يقصد بالوضع الأمثل والأنسب هو القدرة على تخصيص المدخلات المطلوبة بهدف تحقيق الأهداف المحددة مسبقاً. وامام تلك التحديات يلزم أي مشروع ناجحة مدير كفء ذو خبرة، يعمل بفاعلية وجهد كبير من اجل تحقيق اهداف المشروع الذي يقوم بإدارته ويعتبر مدير المشروع من أهم العناصر الفعالة في نجاح المشروع، لأنه يتحمل مسؤولية تخطيط، وتنظيم، وتنفيذ، ومراقبة، وإنهاء وإتمام المشروع.)
الدور التمويلي للمساهم في شركات المساهمة
Authors: حباني عبد الرزاق , غيث ربيعة
Published: September 2021

تعتبر شركة المساهمة ميكانيزم قانوني واقتصادي قادر على استقطاب الأشخاص وجلبهم إلى استثمار أموالهم[1]، ولقد نظمها المشرع المغربي بمقتضى القانون رقم 17.95[2] والذي عدل وتمم بالقانون رقم 20.05 والقانون رقم 78.12 والقانون رقم 20.19، فشركة المساهمة هي الاداة الرائعة للرأسمالية وآلية قانونية لتجميع الأموال عن طريق الاكتتاب الكامل في الرأسمال[3] وتحرير الأسهم النقدية[4] بما لا يقل عن الربع من قيمتها الإسمية وتحرير الباقي دفعة واحدة أو عدة دفعات حسن قرار يتخذه مجلس الإدارة أو مجلس الإدارة الجماعية داخل أجل لا يتجاوز ثلاث سنوات ابتداء من تقييد الشركة في السجل التجاري[5]، مع التحرير الكامل للحصص العينية عند إصدارها وتقييمها بناءا على تقرير ملحق بالنظام الأساسي بعده تحت مسؤوليتهم مراقب أو مراقبي الحصص يعينهم المؤسسون[6]. وإذا كان الدور التمويلي للمساهم هو الذي يحدد مركزه، فإن نسبة الرأسمال المملوكة هي التي تعطي حق الاستثمار بسلطات الإدارة والتسيير وصناعات القرارات المتعلقة بمصير الشركة، الامر الذي ينتج عنه أغلبية صاحبة القرارات الحاسمة في الشركة بحكم مركزها وقدرتها المالية واقلية لا يسعفها دورها التمويلي حتى في المشاركة في صنع القرار، بل يصل الأمر إلى حد حرمانها من الحق المادي الذي هو أساس تجسيد رغبة الاكتتاب في شركة المساهمة. ولقد عمل المشرع المغربي بمقتضى القانون رقم 17.95 المتعلق بشركات المساهمة والذي عدل وتمم بالقانون رقم 20.05 والقانون رقم 78.12 والقانون رقم 19.20 على تحقيق التوازن بين أغلبية مستبدة صاحبة القرار وأقلية متضررة تسعى إلى إيجاد آليات حمائية لحقوقها.
تأثير أشعة المايكروويف في بعض البكتريا الملوثة للحليب
Authors: محمد شيماء , مهدي منال
Published: September 2021

هدف البحث الى معرفة مدى فعالية استخدام أشعة المايكرويف وتأثيره في القضاء او تقليل أعداد بعض الانواع الجرثومية الممرضة وغير الممرضة الموجودة في الحليب الطازج , اذ عرض الحليب لأشعة المايكرويف لفترات زمنية مختلفة ( 0 , 10 , 20 , 40 , 60 , 80 , 100 ) ثانية , وتبين من النتائج انه كان هناك تأثيرا معنويا لأشعة المايكرويف على أعداد البكتريا الموجودة في الحليب , اذ وجد ان تعريض الحليب لمدة 40 ثانية لأشعة المايكرويف كان كافيا للقضاء على كل من بكتريا القولون وبكتريا Salmonella وبكتريا E. coli , وان مدة 60 ثانية كان كافيا للقضاء على كل من بكتريا Shigella و Staphylococcus aureus , وقد كان لأشعة المايكرويف تأثيرا غير معنوي في تقليل الاعداد الكلية للبكتريا لتصل الى معدل 3 x 10 5وحدة تكوين الخلية / مل عند تعريض الحليب لأشعة المايكرويف لمدة 100 ثانية.
Food-induced anaphylaxis in early childhood and factors associated with its severity
Authors: Aydogan Metin , Topal Erdem , Yakıcı Nalan , Acar Hazal Cansu , Demirkale Zeynep Hızlı , Arga Mustafa , Uysal Pınar , Aydemir Sezin , Simsek Isıl Eser , Tamay Zeynep , Cekic Sükrü , Cavkaytar Ozlem , Kaplan Fatih , Kıykım Ayca , Cogurlu Müjde Tugba , Süleyman Ayse , Yücel Esra , Akkelle Emre , Hancıoglu Gonca , Yasar Adem , Tuncel Tuba , Nacaroglu Hikmet Tekin , Aydogmus Cigdem , Güler Nermin , Cokugras Haluk , Sapan Nihat , Yüksel Hasan , Sancak Recep , Erdogan Mehmet Sarper , Ozdemir Oner , Ozdemir Cevdet , Orhan Fazıl
Published: September 2021

Background:Several factors that increase the risk of severe food-induced anaphylaxis have been identified.Objective:We aimed to determine the demographic, etiologic, and clinical features of food-induced anaphylaxis in early childhood and also any other factors associated with severe anaphylaxis.Methods:We carried out a medical chart review of anaphylaxis cases from 16 pediatric allergy and immunology centers in Turkey.Results:The data of 227 patients with 266 food-induced anaphylaxis episodes were included in the study. The median (interquartile range) age of the first anaphylaxis episode was 9 months (6‐18 months); 160 of these patients were boys (70.5%). The anaphylaxis episodes were mild in 75 cases (28.2%), moderate in 154 cases (57.9%), and severe in 37 cases (13.9%). The most frequent food allergens involved were cow's milk (47.4%), nuts (16.7%), and hen's egg (15.8%). Epinephrine was administered in only 98 (36.8%) of these anaphylaxis episodes. A logistic regression analysis revealed two statistically significant factors that were independently associated with severe anaphylaxis: the presence of angioedema and hoarseness during the anaphylactic episode. Urticaria was observed less frequently in patients who developed hypotension. In addition, confusion and syncope were associated with 25.9- and 44.6-fold increases, respectively, in the risk of concomitant hypotension.Conclusion:Cow's milk, nuts, and hen's egg caused the majority of mild and moderate-to-severe anaphylaxis episodes. The presence of angioedema and hoarseness in any patient who presents with a history of food-induced anaphylaxis should alert clinicians that the reaction may be severe. In addition, the presence of confusion, syncope, or stridor probably indicates concomitant hypotension.
Diálogos: desarrollo sostenible a través de los Derechos Humanos y el territorio en el marco de conflicto armado colombiano
Authors: Cano Cuevas Diego Fernando , Hernández Cubides Jairo Andrés , Acosta Valencia Luis Felipe , Torres Guarnizo Mauricio Antonio , Páez Ramírez Daniel Felipe , Viloria Vélez Sheyla Margarita , Comellas Angulo Paula , Fernández Barreto David Iván , Calderón Bocanegra Camilo Alberto
Published: September 2021

Este libro, resultado de la investigación denominada Diálogos: desarrollo sostenible a través de los Derechos Humanos y el territorio dentro del marco de conflicto armado colombiano, desarrolla diferentes temáticas que analizan y reflexionan acerca de temas como los modelos y las políticas de atención de sustitución de cultivos ilícitos y restitución de tierras en Colombia, la mediación y su lugar en la prevención de conflictos ambientales, y la implementación de políticas con enfoque de género a la luz del desarrollo sostenible. La presente obra expone productos resultado de investigación del proyecto de investigación Construcción de paz y desarrollo sostenible: una mirada desde los Derechos Humanos y el DICA, que hace parte de la línea de investigación Memoria Histórica, Construcción de Paz, Derechos Humanos, DIH y DICA, del grupo de investigación Memoria Histórica, Construcción de Paz, Derechos Humanos, DICA y Justicia, reconocido y categorizado en (C) por Colciencias, registrado con el código COL0141423, vinculado a la Maestría en Derechos Humanos y Derecho Internacional de los Conflictos Armados, adscrito y financiado por la Escuela Superior de Guerra “General Rafael Reyes Prieto” (ESDEG).