bluuebunny/crossref_metadata_2025 huggingface dataset:
From Decision to Survival—Shifting the Paradigm in Entrepreneurship during the COVID-19 Pandemic
Authors: Lungu Anca Elena , Bogoslov Ioana Andreea , Stoica Eduard Alexandru , Georgescu Mircea Radu
Published: July 2021

(1) Purpose: The main objective of this research was to determine if and how the COVID-19 pandemic impacted new entrepreneurial opportunities. The study also focused on finding the means of actions that can positively affect the future entrepreneurial field. (2) Methodology: Initially, the literature review was approached, the complementary evaluation of the researchers’ interest sustaining the timeliness of the analyzed topic. The empirical analysis implied conducting a multiple statistical regression on how the new entrepreneurial opportunities can be affected by relevant variables. (3) Findings: The obtained results highlighted a potential beneficial effect of the COVID-19 pandemic on entrepreneurship, namely determining new entrepreneurial opportunities. The need to consider new directions of action in entrepreneurship was also outlined, the online migration and the adaption to new market configurations being considered essential promoters of change. (4) Practical Implications/Originality/Value: Although existing research focused, to a large extent, on analyzing the COVID-19 pandemic’s effects on entrepreneurship, few of them highlighted a future perspective that would ensure the continuity of entrepreneurial processes in extreme conditions, such as those under study. The present research could contribute to the specialty literature enrichment while serving as guidance to the entrepreneurship practitioners towards the implementation of long-term visions and processes.
Semi-Systematic Literature Review on Sustainability and Sustainable Development in Higher Education Institutions
Authors: Omazic Amila , Zunk Bernd Markus
Published: July 2021

Public sector organizations, primarily higher education institutions (HEIs), are facing greater levels of responsibility since adopting and committing to the Agenda 2030 for Sustainable Development (SD) and its 17 Sustainable Development Goals (SDGs). HEIs are expected to provide guidance for various stakeholders on this matter, but also to implement this agenda and the SDGs in their institutions. Although the role of these organizations has been recognized, the fields and issues that HEIs should address on their path towards sustainability and SD are still unclear. To provide further clarity, a semi-systematic literature review on sustainability and SD in HEIs was conducted to identify both the key concepts and main research themes that represent sustainability and SD in HEIs and to identify research gaps. This review increases our knowledge of this topic and enhances our understanding of sustainability and SD in the context of HEIs.
Effects of Resistance Training Program on Muscle Mass and Muscle Strength and the Relationship with Cognition in Older Women
Authors: Molina-Sotomayor Edgardo , Espinoza-Salinas Alexis , Arenas-Sánchez Giovanny , Pradas de la Fuente Francisco , Leon-Prados Juan Antonio , Gonzalez-Jurado Jose Antonio
Published: July 2021

The aim of this study was to study the effects of a resistance training programme on Maximal Dynamic Strength (MDS) and muscle morphology of the upper limbs (UL) and lower limbs (LL), as well as to analyse their association with cognition, in a population of older women. The study had a duration of 24 months and a total of 93 Chilean older women participated. The participants were divided into two groups: the Physical Activity Group (PAG, n = 45, age (X ± SD) 77.93 ± 3.54 years), and the Sedentary Group (SG, n = 48, age (X ± SD) 77.71 ± 3.41 years). The PAG carried out a muscle strength training routine twice per week. The following variables were evaluated: muscle function through maximal dynamic strength (1RM), muscle morphology through arm and calf circumference (AC and CC, respectively), and cognition (Mini Mental State Examination: MMSE). The results show that the SG recorded significant decreases (percent changes; p < 0.05) in the analysed variables: MMSE (−3.5%), MDS in UL (−3.3%), MDS in LL (−4.1%), AC (−4.5%), CC (−4.1%), and BMI (−3.1%). However, the PAG improved significantly in all the analysed variables except in BMI: MMSE (3.9%), MDS in UL (3.6%), MDS in LL (3.5%), AC (1.8%), and CC (2.5%). Moreover, there was a significant association (p < 0.05) between the changes in the muscle strength variables and the changes in cognition level. Therefore, it can be concluded that a two-year muscle strength training programme (load intensity between 30–55% 1RM) in older women improves Maximal Dynamic Strength in UL and LL, as well as muscle mass in arms and calves. Furthermore, it can be asserted that the changes in muscle strength levels could predict the changes in the levels of cognition in older women.
Comparing Behavioral Theories to Predict Consumer Interest to Participate in Energy Sharing
Authors: Morgan Julia , Canfield Casey
Published: July 2021

Consumer investment in distributed energy resources (DERs) is increasing the penetration of renewable energy in the grid. In some cases, DERs produce more electricity than needed by the owner and this excess electricity is sold to the utility (e.g., net metering). In contrast, energy sharing allows a facilitator, which may or may not be the utility, to redistribute excess renewable electricity to fellow community members directly. However, little is known about consumer interest in participating in this type of arrangement. This preregistered study uses structural equation modeling to compare two behavioral theories, Value-Belief-Norm and Diffusion of Innovation, to predict consumer interest in participating in energy sharing. Participants answered questions about energy sharing in the context of an energy-sharing community facilitated by the fictional company, E-topia. Survey data from 195 online participants suggest that Value-Belief-Norm is a better, although not quite acceptable, fit. This suggests that early adoption of energy sharing may be driven by appealing to core values rather than novelty-seeking. This study implies that individuals are more likely to participate in a new technology system such as energy sharing when the effects of participation align with individuals’ values.
Identifying Public Policies to Promote Sustainable Building: A Proposal for Governmental Drivers Based on Stakeholder Perceptions
Authors: Díaz-López Carmen , Navarro-Galera Andrés , Zamorano Montserrat , Buendía-Carrillo Dionisio
Published: July 2021

In recent years, research findings and pronouncements by international organisations have recognised the usefulness and timeliness of advancing public policies to promote sustainable building. However, in many parts of the world, governmental measures have limited their scope mainly to energy efficiency in housing use. In the same vein, some experiences in different countries have revealed the need to study further governmental or stimulation drivers that can boost sustainability in building, renovation, and dwellings. This paper aims to contribute to the design of public policies that promote sustainable building. Our paper seeks to identify specific drivers that can help governments boost sustainability in building, renovation, and dwellings through a multi-stakeholder survey. Our findings show the specific drivers to be of three types: fiscal, financial, and government interventions. It is the respondents’ opinion that public policies can help promote sustainable housing. Financial drivers are the most highly rated, followed by fiscal drivers and then government interventions.
A Combined Control Systems and Machine Learning Approach to Forecasting Iceberg Flux off Newfoundland
Authors: Ross Jennifer B. , Bigg Grant R. , Zhao Yifan , Hanna Edward
Published: July 2021

Icebergs have long been a threat to shipping in the NW Atlantic and the iceberg season of February to late summer is monitored closely by the International Ice Patrol. However, reliable predictions of the severity of a season several months in advance would be useful for planning monitoring strategies and also for shipping companies in designing optimal routes across the North Atlantic for specific years. A seasonal forecast model of the build-up of seasonal iceberg numbers has recently become available, beginning to enable this longer-term planning of marine operations. Here we discuss extension of this control systems model to include more recent years within the trial ensemble sample set and also increasing the number of measures of the iceberg season that are considered within the forecast. These new measures include the seasonal iceberg total, the rate of change of the seasonal increase, the number of peaks in iceberg numbers experienced within a given season, and the timing of the peak(s). They are predicted by a range of machine learning tools. The skill levels of the new measures are tested, as is the impact of the extensions to the existing seasonal forecast model. We present a forecast for the 2021 iceberg season, predicting a medium iceberg year.
Sustainable Scheduling of the Production in the Aluminum Furnace Hot Rolling Section with Uncertain Demand
Authors: Huang Yiping , Yang Qin , Liu Jinfeng , Li Xiao , Zhang Jie
Published: July 2021

In order to reduce the energy consumption of furnaces and save costs in the product delivery time, the focus of this paper is to discuss the uncertainty of demand in the rolling horizon and to globally optimize the sustainability of the production in the aluminum furnace hot rolling section in environmental and economic dimensions. First, the triples α/β/γ are used to describe the production scheduling in the aluminum furnace hot rolling section as the scheduling of flexible flow shop, satisfied to constraints of demand uncertainty, operation logic, operation time, capacity and demand, objectives of minimizing the residence time of the ingot in the furnace and minimizing the makespan. Second, on the basis of describing the uncertainty of demand in rolling horizon with the scenario tree, a multi-objective mixed integer linear programming (MILP) optimization model for sustainable production in the aluminum furnace hot rolling section is formulated. Finally, an aluminum alloy manufacturer is taken as an example to illustrate the proposed model. The computational results show that when the objective weight combination takes the value of α=0.7, β=0.3, the sustainability indicators of the environmental and economic dimensions can be optimized to the maximum extent possible at the same time. Increasingly, managerial suggestions associated with the trade-off between environmental and economic dimensions are presented. Scheduling in the rolling horizon can optimize the production process of the aluminum furnace hot rolling section globally, indicating that it is more conducive to the sustainable development of the environment and economic dimensions than scheduling in a single decision time period.
Design and Implementation of a Maximum Power Point Tracking System for a Piezoelectric Wind Energy Harvester Generating High Harmonicity
Authors: Kurt Erol , Özhan Davut , Bizon Nicu , Lopez-Guede Jose Manuel
Published: July 2021

In this work, a maximum power point tracking (MPPT) system for its application to a new piezoelectric wind energy harvester (PWEH) has been designed and implemented. The motivation for such MPPT unit comes from the power scales of the piezoelectric layers being in the order of μW. In addition, the output generates highly disturbed voltage waveforms with high total harmonic distortion (THD), thereby high THD values cause a certain power loss at the output of the PWEH system and an intense motivation is given to design and implement the system. The proposed MPPT system is widely used for many different harvesting studies, however, in this paper it has been used at the first time for such a distorted waveform to our best knowledge. The MPPT consists of a rectifier unit storing the rectified energy into a capacitor with a certain voltage called VOC (i.e., the open circuit voltage of the harvester), then a dc-dc converter is used with the help of the MPPT unit using the half of VOC as the critical value for the performance of the control. It has been demonstrated that the power loss is nearly half of the power for the MPPT-free system, the efficiency has been increased with a rate of 98% and power consumption is measured as low as 5.29 μW.
Engine Vibration Data Increases Prognosis Accuracy on Emission Loads: A Novel Statistical Regressions Algorithm Approach for Vibration Analysis in Time Domain
Authors: Žvirblis Tadas , Vainorius Darius , Matijošius Jonas , Kilikevičienė Kristina , Rimkus Alfredas , Bereczky Ákos , Lukács Kristóf , Kilikevičius Artūras
Published: July 2021

Statistical regression models have rarely been used for engine exhaust emission parameters. This paper presents a three-step statistical analysis algorithm, which shows increased prediction accuracy when using vibration and sound pressure data as a covariate variable in the exhaust emission prediction model. The first step evaluates the best time domain statistic and the point of collection of engine data. The univariate linear regression model revealed that non-negative time domain statistics are the best predictors. Also, only one statistic evaluated in this study was a statistically significant predictor for all 11 exhaust parameters. The ecological and energy parameters of the engine were analyzed by statistical analysis. The symmetry of the methods was applied in the analysis both in terms of fuel type and in terms of adjustable engine parameters. A three-step statistical analysis algorithm with symmetric statistical regression analysis was used. Fixed engine parameters were evaluated in the second algorithm step. ANOVA revealed that engine power was a strong predictor for fuel mass flow, CO, CO2, NOx, THC, COSick, O2, air mass flow, texhaust, whereas type of fuel was only a predictor of tair and tfuel. Injection timing did not allow predicting any exhaust parameters. In the third step, the best fixed engine parameter and the best time domain statistic was used as a model covariate in ANCOVA model. ANCOVA model showed increased prediction accuracy in all 11 exhausted emission parameters. Moreover, vibration covariate was found to increase model accuracy under higher engine power (12 kW and 20 kW) and using several types of fuels (HVO30, HVO50, SME30, and SME50). Vibration characteristics of diesel engines running on alternative fuels show reliable relationships with engine performance characteristics, including amounts and characteristics of exhaust emissions. Thus, the results received can be used to develop a reliable and inexpensive method to evaluate the impact of various alternative fuel blends on important parameters of diesel engines.
Existence of Solutions for a Singular Fractional q-Differential Equations under Riemann–Liouville Integral Boundary Condition
Authors: Samei Mohammad Esmael , Ghaffari Rezvan , Yao Shao-Wen , Kaabar Mohammed K. A. , Martínez Francisco , Inc Mustafa
Published: July 2021

We investigate the existence of solutions for a system of m-singular sum fractional q-differential equations in this work under some integral boundary conditions in the sense of Caputo fractional q-derivatives. By means of a fixed point Arzelá–Ascoli theorem, the existence of positive solutions is obtained. By providing examples involving graphs, tables, and algorithms, our fundamental result about the endpoint is illustrated with some given computational results. In general, symmetry and q-difference equations have a common correlation between each other. In Lie algebra, q-deformations can be constructed with the help of the symmetry concept.
Morphology of an Interacting Three-Dimensional Trapped Bose–Einstein Condensate from Many-Particle Variance Anisotropy
Authors: Alon Ofir E.
Published: July 2021

The variance of the position operator is associated with how wide or narrow a wave-packet is, the momentum variance is similarly correlated with the size of a wave-packet in momentum space, and the angular-momentum variance quantifies to what extent a wave-packet is non-spherically symmetric. We examine an interacting three-dimensional trapped Bose–Einstein condensate at the limit of an infinite number of particles, and investigate its position, momentum, and angular-momentum anisotropies. Computing the variances of the three Cartesian components of the position, momentum, and angular-momentum operators we present simple scenarios where the anisotropy of a Bose–Einstein condensate is different at the many-body and mean-field levels of theory, despite having the same many-body and mean-field densities per particle. This suggests a way to classify correlations via the morphology of 100% condensed bosons in a three-dimensional trap at the limit of an infinite number of particles. Implications are briefly discussed.
Transposable Elements in the Genome of Human Parasite Schistosoma mansoni: A Review
Authors: Philippsen Gisele Strieder
Published: July 2021

Transposable elements (TEs) are DNA sequences able to transpose within the host genome and, consequently, influence the dynamics of evolution in the species. Among the possible effects, TEs insertions may alter the expression and coding patterns of genes, leading to genomic innovations. Gene-duplication events, resulting from DNA segmental duplication induced by TEs transposition, constitute another important mechanism that contributes to the plasticity of genomes. This review aims to cover the current knowledge regarding TEs in the genome of the parasite Schistosoma mansoni, an agent of schistosomiasis—a neglected tropical disease affecting at least 250 million people worldwide. In this context, the literature concerning TEs description and TEs impact on the genomic architecture for S. mansoni was revisited, displaying evidence of TEs influence on schistosome speciation—mediated by bursts of transposition—and in gene-duplication events related to schistosome–host coevolution processes, as well several instances of TEs contribution into the coding sequences of genes. These findings indicate the relevant role of TEs in the evolution of the S. mansoni genome.
Identification of a Ruminant Origin Group B Rotavirus Associated with Diarrhea Outbreaks in Foals
Authors: Uprety Tirth , Sreenivasan Chithra C. , Hause Ben M. , Li Ganwu , Odemuyiwa Solomon O. , Locke Stephan , Morgan Jocelynn , Zeng Li , Gilsenan William F. , Slovis Nathan , Metcalfe Laurie , Carter Craig N. , Timoney Peter , Horohov David , Wang Dan , Erol Erdal , Adam Emma , Li Feng
Published: July 2021

Equine rotavirus group A (ERVA) is one of the most common causes of foal diarrhea. Starting in February 2021, there was an increase in the frequency of severe watery to hemorrhagic diarrhea cases in neonatal foals in Central Kentucky. Diagnostic investigation of fecal samples failed to detect evidence of diarrhea-causing pathogens including ERVA. Based on Illumina-based metagenomic sequencing, we identified a novel equine rotavirus group B (ERVB) in fecal specimens from the affected foals in the absence of any other known enteric pathogens. Interestingly, the protein sequence of all 11 segments had greater than 96% identity with group B rotaviruses previously found in ruminants. Furthermore, phylogenetic analysis demonstrated clustering of the ERVB with group B rotaviruses of caprine and bovine strains from the USA. Subsequent analysis of 33 foal diarrheic samples by RT-qPCR identified 23 rotavirus B-positive cases (69.69%). These observations suggest that the ERVB originated from ruminants and was associated with outbreaks of neonatal foal diarrhea in the 2021 foaling season in Kentucky. Emergence of the ruminant-like group B rotavirus in foals clearly warrants further investigation due to the significant impact of the disease in neonatal foals and its economic impact on the equine industry.
Agricultural Effects on Streams and Rivers: A Western USA Focus
Authors: Hughes Robert M. , Vadas Robert L.
Published: July 2021

Globally, croplands and rangelands are major land uses and they have altered lands and waters for millennia. This continues to be the case throughout the USA, despite substantial improvements in treating wastewaters from point sources—versus non-point (diffuse) sources. Poor macroinvertebrate assemblage condition occurs in 30% of conterminous USA streams and rivers; poor fish assemblage condition occurs in 26%. The risk of poor fish assemblage condition was most strongly associated with excess nutrients, salinity and sedimentation and impaired riparian woody vegetation. Although the Clean Water Act was passed to restore and maintain the integrity of USA waters, that will be impossible without controlling agricultural pollution. Likewise, the Federal Land Policy and Management Act was enacted to protect the natural condition of public lands and waters, including fish habitat, but it has failed to curtail the sacred cows of livestock grazing. Although progress has been slow and spotty, promising results have been obtained from basin and watershed planning and riparian zone protections.
Revealing the Challenges of Smart Rainwater Harvesting for Integrated and Digital Resilience of Urban Water Infrastructure
Authors: Oberascher Martin , Dastgir Aun , Li Jiada , Hesarkazzazi Sina , Hajibabaei Mohsen , Rauch Wolfgang , Sitzenfrei Robert
Published: July 2021

Smart rainwater harvesting (RWH) systems can automatically release stormwater prior to rainfall events to increase detention capacity on a household level. However, impacts and benefits of a widespread implementation of these systems are often unknown. This works aims to investigate the effect of a large-scale implementation of smart RWH systems on urban resilience by hypothetically retrofitting an Alpine municipality with smart rain barrels. Smart RWH systems represent dynamic systems, and therefore, the interaction between the coupled systems RWH units, an urban drainage network (UDN) and digital infrastructure is critical for evaluating resilience against system failures. In particular, digital parameters (e.g., accuracy of weather forecasts, or reliability of data communication) can differ from an ideal performance. Therefore, different digital parameters are varied to determine the range of uncertainties associated with smart RWH systems. As the results demonstrate, smart RWH systems can further increase integrated system resilience but require a coordinated integration into the overall system. Additionally, sufficient consideration of digital uncertainties is of great importance for smart water systems, as uncertainties can reduce/eliminate gained performance improvements. Moreover, a long-term simulation should be applied to investigate resilience with digital applications to reduce dependence on boundary conditions and rainfall patterns.
Treatment of Purified Terephthalic Acid Wastewater by Ozone Catalytic Oxidation Method
Authors: Lu Xi , Xie Shuqian , Li Shuai , Zhou Jun , Sun Wenquan , Xu Yanhua , Sun Yongjun
Published: July 2021

In this study, a Cu–Ce@Az ozone catalyst with multiple active components was prepared through the impregnation method to treat purified terephthalic acid (PTA) wastewater, and characterized by X-ray diffraction, X-ray fluorescence spectroscopy, scanning electron microscopy, specific surface area analysis, X-ray energy spectroscopy, X-ray photoelectron spectroscopy, and other methods. The Cu–Ce@Az ozone catalyst had a developed pore structure with a large specific surface area and crystal structure. After calcination, the metallic elements Cu and Ce existed in the state of oxides CuO and CeO2. The effects of reaction time, solution pH, catalyst dosage, and ozone dosage on the catalytic oxidation performance of the Cu–Ce@Az ozone catalyst were studied. Adding tert-butanol reduced the removal rate of COD from the PTA wastewater through the catalytic oxidation system, which proves that a Cu–Ce@Az ozone catalyst treatment process of PTA wastewater follows the free-radical reaction mechanism. The results of 3D fluorescence spectroscopy analysis show that the organic matter in the PTA wastewater was converted into tryptophan organic matter and aromatic organic matter after the reaction of the catalytic oxidation system. Ultraviolet absorption spectroscopy analysis indicated that in unsaturated chemical bonds, some conjugated structures and benzene ring structures of organic matter in the PTA wastewater were destroyed.
Етика бізнесу
Authors: Балджи М. Д.
Published: July 2021

Навчальний посібник містить теоретичні і прикладні положення розвитку етики бізнесу і спрямований на формування у студентів сучасного мислення й глибокого комплексного розуміння значення цивілізованих ділових відносин на внутрішньому ринку та авторитета національного підприємця в очах закордонних партнерів. Навчальний посібник містить практичні завдання, глосарій, рекомендовану літературу, додатки. Структура навчального посібника побудована таким чином, щоб допомогти студентам при підготовці до самостійної роботи та сприяти ефективному опрацюванню лекційного матеріалу, глибокому розумінню сутності проблем, розширенню їх теоретико-пізнавального рівня. Навчальний посібник може бути корисним студентам, аспірантом, викладачам та підприємцям.
Comparative characteristics of analysis methods of the corporate social responsibility management
Authors: Nadeyko Mykola
Published: July 2021

The purpose of the article is to form the theoretical foundations of the state (level) analysis of social responsibility for the enterprise management needs. The study used identification, systematization and analysis of the advantages and disadvantages of existing methods, which made it possible to identify methodological recommendations for improving of social responsibility process. It was characterized the state of assessing the social responsibility of national enterprises at the level of Ukrainian rating agencies over the past five years. Leading enterprises in the field of corporate social responsibility have been identified based on the results of national ratings. The existing methods of corporate social responsibility management analysis were analyzed. Their content and methods used in them are identified. The main factors for evaluation are summarized. The expediency of assessing the effectiveness of management by external and internal vectors of social responsibility is noted. The activities aimed at introducing an effective social responsibility management system are presented. For practical usage we have proposed the list of measures that will contribute to the implementation of an effective management system of social responsibility, increase its level and develop this process. As a result of the ratings analysis at the country level, the trends of changes occurring both in the social responsibility management system and in terms of covering information on its implementation are generalized. The conducted studies allow us to conclude that today there is no universal methodology for assessing the level of social responsibility. In this regard, the management of social responsibility of the enterprise was offered to use the advantages of various methods to form its own comprehensive methodology, taking into account management needs and target audience. Therefore, the social responsibility management of the enterprise was offered to use advantages of various methods to form its own comprehensive methodology, taking into account management needs and target audience.
Prospects for development of inbound tourism in Ukraine with using of digital marketing tools
Authors: Nazarenko Olga
Published: July 2021

The article considers the issues of theory and practice of digital marketing to solve the problems of the tourism business. It is shown that the use of online marketing tools is a necessary condition for the successful development of tourism enterprises. The current state, problems and prospects of development of tourist services market of Ukraine are analyzed. It was found that the priority directions are the development of both inbound and domestic tourism, which are important factors in improving of life quality in Ukraine, creating additional jobs, replenishing the foreign exchange reserves of the state and improving the brand image of Ukraine in the international arena. It has been determined that the strategy of inbound tourism development should provide for the use of a structural and functional method that allows combining various components of the tourism industry and its infrastructure. The main problems that hinder the development of the tourism industry in the country and require further solutions are considered. It is proved that it is possible to stimulate the development of inbound tourism possibly by improving the information and technical infrastructure, improving the service quality, and development of international tourist routes. According to the results of the study, it is proposed ways to increase the subscriber base, create valuable and relevant content for customers, personalize communication with customers and automate this process, as well as formulate recommendations for turning a new customer into a loyal one. It is proved that there are all prerequisites for the tourism sphere development in Ukraine, since Ukraine has significant recreational potential: favorable geographical location, favorable climatic conditions, varied relief, an extensive transport network and preserved monuments of cultural heritage.
Strategic programs of socio-economic development as the main element of effective formation of human potential
Authors: Nikiforenko Valeriy
Published: July 2021

The author’s interpretation of the development of human potential as a driving force of personal and social progress, which is a dynamic process of changes in the quantitative and qualitative characteristics of human resources, is proposed in the article. The purpose of this study is to determine a clearer relationship between the formation and development of human potential and socio-economic development with highlighting of methodological approaches to the formation of appropriate development programs. To achieve this goal, the author investigated the relationship between the concepts of «socio-economic development», «human potential» and «formation and development of human potential». The provisions on the meaningful interpretation of human resources and human potential as human abilities and capabilities, which become the basis for creating appropriate conditions in social production for dynamic human development, have been clarified. It is substantiated that in the methodological aspect, when forming programs of socio-economic development, it is advisable to distinguish between social development as a main goal of these programs, and economic development as a means of achieving this goal with the simultaneous mutual influence of these components. It is proposed to consider the systemic transformation of human resource development management as a main component of the prerequisites formation for human potential accumulation and social production development. The main components of the updated human resource development management system, namely the goals, principles and levels of development, the functions of managerial influence, have been determined. It has been substantiated that the main goal of socio-economic development programs should be the continuous development of a person as a carrier of human potential; and the use of innovation, complexity, knowledge orientation – as a principles of their construction on the basis of organizational, systemic and humanistic approaches.
Theoretical approaches to the definition of the concept of operational management
Authors: Karpenko Julia , Pienova Anzhelika
Published: July 2021

The article considers the author’s interpretations regarding the definition of the essence of operational management concept. The purpose of article is to systematize the existing definitions of «operational management» and clarify the essence of this concept. The research methods of comparison, grouping, induction and deduction, analysis and synthesis were used in the research. According to the study results, different opinions of researchers on the relationship between the concepts of operational and production management have been studied and found that these concepts are not interchangeable. Based on the analysis of the author’s interpretations of the essence of operational management, three scientific approaches are identified, which were presented in the scientific developments of a number of researchers, namely: an emphasis on the production systems management, an emphasis on operations management and an emphasis on resource allocation. The relationship between key concepts of operational management such as «operation», «operational strategy», «operating system», «operational function» is established. It was revealed that the operation is the primary indivisible link of the operating system, and the operational function should be considered as a set of operations, the result of which is the manufacture of goods or provision of services, supplied by the enterprise to the external environment. It is determined that operational decisions related to management concern the formation of operational strategy, as well as the development and ensuring the functioning of the operating system. According to the results of definitions systematization and analysis of the basic concepts of operational management, the interpretation of its essence is generalized. It is proposed to consider the operational management as an activity of operations management, which is the basis of the operating system of any enterprise and provides for its provision of the necessary resources and transform them into goods or services to achieve established corporate goals.
L’importation d’un « sentiment de l’enfance » libéral et démocratique à Thnaot Chum (Cambodge)
Authors: Prigent Steven
Published: July 2021

This paper studies the reception of liberal and democratic values in relation to children and their education in a present-day village of rice farmers in Cambodia. These values, essentially based on the International Convention on the Rights of the Child and the so-called ‘ child centred’ approach promoted by UN bodies, reach the Cambodian rural world through the market economy (and its consumer society), through actors in the world of international development and through the primary school system. Our study, focussed on one village whose name is changed for the sake of anonymity, questions the possibility of an actual emancipation of Khmer youth from the hold of the filial and hierarchical family structure that still prevails in the contemporary Khmer rural world.
STUDY OF WEAR RESISTANCE OF THE CU-AL SYSTEM LAYERED METAL-INTERMETALLIDE COMPOSITES
Authors: Shmorgun V. G. , Slautin O. V. , Kulevich V. P. , Artemiev A. A. , Kharlamov V. O. , Chukova O. M.
Published: July 2021

The results of wear testing of the SMIC of the copper-aluminum system at the angle of action of the abrasive relative to the metal-intermetallic layers - 0, 45 and 90º are given. It is shown that the wear resistance of SMIC is 3.2 ÷ 3.3 times higher than that of AD1 aluminum. At the same time, the samples showed the best indicators of wear resistance when the abrasive was applied to the layered structure of the tested SMIC at an angle of 45º. Analysis of the wear surfaces obtained by friction in all directions with respect to the layers of the SMIC made it possible to identify all the main morphological types of wear particles in the conglomerate. It is shown that additional saturation of the hard phases (intermetallic or abrasive) with pressed particles of soft metal layers contributes to the implementation of the Charpy principle.
NUMERICAL AND ANALYTICAL MODELING OF STRESS-DEFORMED STATE OF THE METAL RING SEAL OF THE TUBING HAGER
Authors: Timofeev E. K. , Zhukov B. A. , Godenko A. E. , Lipatov E. Yu.
Published: July 2021

The article presents a numerical and analytical modeling of the stress-strain state of a metal ring seal of a tubing hanger under installation loads, as well as under the influence of well pressure. An analytical method for calculating strength and tightness within the elastic formulation is proposed. The calculation by the finite element method was carried out in order to take into account plastic deformations, which make it possible to study the influence of the geometry of the contact zone of the sealing ring on the width of the contact pad and the magnitude of the contact pressure. Comparison of the calculation results by the analytical method and the finite element method is carried out. It is shown that the analytical method, as less labor-intensive, can be used at the initial stages of designing this type of equipment.
Westernization, Mahmud II, and the Virtue Tradition
Authors: Ersahin Seyfettin
Published: July 2021

The Ottoman reforms of the nineteenth century sought a reconciliation between Islam and western civilization. The ulama played a key role in this process by supporting the reformers’ desire to bring Islam closer to the needs of the age and of the empire. The reformers, chiefly Sultan Mahmud II and his close friends, gained the ulama’s support to such an extent that the Shaykh al-Islam wrote a treatise to persuade the masses to accept the reforms. Applying the traditional virtue literature to the Ottoman dynasty, he presented Sultan Mahmud II as an ideal caliph-sultan. This effort helped to westernize the traditional Ottoman political structure and society.
Classification of Abrogation in the Qur’an
Authors: Khan Israr Ahmad
Published: July 2021

Most classical-era Qur’anic studies scholars, among then Abu `Ubayd al-Qasim ibn Sallam (d. 224 AH), Makki ibn Abi Talib (d. 437 AH), Abd al-Rahman ibn al-Jawzi (d. 597 AH), Badr al-Din al- Zarkashi (d. 794 AH), and Jalal al-Din al-Suyuti (d. 911 AH) were enthusiastic supporters of the theory of abrogation. They claimed that the Qur’an contains three types of abrogation1: suspension of certain verses’ practical dimension only, expurgation of both the verses and their rulings, and exclusion of the verses even though their rulings are still valid. To substantiate their approach, they advanced hadiths comprising statements supposedly made by both the Companions (Sahabah) and the Followers (Tabi`un). A rational and critical scrutiny of these hadiths will reveal whether they can form the basis of such arguments. I will check the nature of these hadiths’ chains of narrators and weigh the views attributed to early Muslim scholars against reason. As regards the first category, several of my articles on these arguments have been published elsewhere.2 This article, which examines the remaining two categories, consists of two dimensions: applying the hadith criticism principle to these hadiths and checking their information in a rational manner.
¿Qué pasa con la quimioprofilaxis de la tuberculosis con isoniazida?
Authors: Carcelén-Bustamante Amador
Published: July 2021

La tuberculosis sigue siendo una causa importante de mortalidad en el mundo entero.
Factores asociados al bajo peso al nacer en un hospital de Huánuco
Authors: Allpas-Gómez Henry Lowell , Raraz-Vidal Jarvis , Raraz-Vidal Omar
Published: July 2021

Introducción. El bajo peso al nacer (BPN) es un importante indicador de salud fetal, neonatal y de las condiciones de la gestación. Objetivo: identificar factores asociados al BPN en el Hospital Carlos Showing Ferrari de Huánuco, Perú. Material y método. Estudio descriptivo, retrospectivo de corte transversal. Se realizó en el servicio de Ginecoobstetricia del Hospital Carlos Showing Ferrari de Huánuco. Participantes. Madre e hijos atendidos en el servicio de Gineco-obstetricia. Intervenciones. Según los criterios de inclusión y exclusión se obtuvo, 801 madreshijos registrados en el Sistema Informático Perinatal (SIP) del 2011. Se utilizó un instrumento de recolección validado, se obtuvo información del SIP e historias clínicas, durante 6 meses. Se realizó el análisis descriptivo; para el análisis inferencial se usó la prueba ji cuadrado con una significancia del 95 %. Se empleó el paquete estadístico SPSS y Microsoft Excel. Resultados. De los 801 nacidos, el peso promedio fue 3 217,8 (+ 446,1) gramos y una p revalencia de BPN de 6,2 %. Los factores asociados que resultaron estadísticamente significativos fueron: la primiparidad con p = 0,013(IC-95%: 1,16-3,81); número de controles prenatales (menor de cuatro) con p < 0,05 (IC95%: 2,63-8,74) y parto pretérmino con p < 0,05 (IC95%: 0,01-0,25). Conclusión. La prevalencia del bajo peso al nacer en el Hospital Carlos Showing Ferrari de Huánuco fue 6,2 %. La primiparidad, el inadecuado control prenatal y el parto pretérmino fueron los factores asociados.
Factores de riesgo asociados con alteraciones respiratorias clínicas, espirométricas y radiográficas a seis meses de seguimiento en pacientes con nueva influenza A(H1N1)
Authors: Grajeda-Ancca Pablo
Published: July 2021

Introducción. En 2009, en la Región Cusco se reportaron 395 casos confirmados de nueva influenza A(H1N1) –NIAH1N1–, 15 defunciones, con alta tasa de letalidad (3,8 %). Los efectos posteriores al cuadro agudo son los temas menos  investigados, aunque es importante estudiar la presencia de disfunción respiratoria a seis meses de seguimiento.  Objetivo. Determinar los factores de riesgo asociados (FRA) a la presencia y características de las alteraciones  respiratorias clínicas, espirométricas y radiográficas al sexto mes de seguimiento en sujetos con antecedente  e infección por la NIAH1N1. Métodos. Estudio de corte transversal, en 118 pacientes mayores de 14 años, seis meses  después de haber tenido un cuadro de NIAH1N1, confirmado  por PCRrt, sin antecedente de afección pulmonar previa en 2009. Resultados. Casi 7 de cada 10 sujetos presentó  lguna alteración, las espirométrica y clínica fueron las más frecuentes. La patología de riesgo asociada (RP = 4,11 [IC95% = 2,49-6,78], p = 0,0000002), la demora en el inicio del tratamiento antiviral específico (RP = 4,56 [IC95% = 2,48- 8,37], p = 0,0000001) y la presencia de insuficiencia respiratoria aguda grave (IRAG) (RP = 11,35 [IC95% = 4,27- 30,17], p = 0,0000000) son FRA a alteraciones clínicas; la patología de riesgo asociada (RP = 12,52 [IC95% = 2,7-58,08], p = 0,00003), un FRA a alteración radiográfica; la presencia de IRAG (RP = 1,33 [IC95% = 1,02-1,74], p = 0,04), un FRA a alteración espirométrica. Conclusiones. La NIAH1N1 produce alteraciones clínicas, espirométricas y radiográficas a seis meses de presentado el cuadro agudo, y los FRA son patología de riesgo asociada, demora en el inicio del tratamiento antiviral específico y presencia de IRAG, que deben ser considerados para el tratamiento apropiado, y realizar el seguimiento respectivo y prevenir estas alteraciones.
Evaluación de la eficacia y seguridad del ácido hialurónico por vía oral asociado con glucosamina sulfato, condroitín sulfato y metilsulfonilmetano comparado con la asociación por vía oral de glucosamina sulfato, condroitín sulfato ymetilsulfonilmetano en la osteoartritis de rodilla
Authors: Castañeda Oswaldo , Kuroiwa Rita , Torres David , Castañeda Alejandra , Manche-Kuroiwa Sandra , Priori Ennio
Published: July 2021

Objetivo. Comparar la eficacia y la seguridad de la asociación de ácido hialurónico (AH), glucosamina sulfato (GS), condroitina sulfato (CS) y metilsulfonilmetano (MSM) versus GS, CS y MSM en el control de los síntomas de la osteoartritis (OA) de rodilla. Material y método. Estudio comparativo, aleatorizado prospectivo, a doble ciego, en pacientes con OA de rodilla, divididos en dos grupos, durante tres meses de tratamiento diario, vía oral. El grupo  1 recibió AH 120 mg + GS 1 500 mg + CS 1 200 mg + MSM 1 000 mg y el grupo 2, la misma asociación pero sin AH. Se incluyeron hombres y mujeres mayores de 40 años y menores de 80 años con diagnóstico de OA de rodilla, según el criterio modificado del Colegio Americano Reumatología (ACR). Se realizaron cuatro evaluaciones, inicial y a las 4, 8 y 12 semanas de tratamiento. El dolor se evalúo con la escala de WOMAC 3.1 y la escala visual análoga (EVA) y el estado de salud, con el cuestionario SF-36 versión 2. En todas las  visitas se proporcionó al paciente un formulario para que anote la presencia de algún evento adverso. Resultados. Los grupos 1 y 2 tuvieron similares datos en edad, género, grado de instrucción y tiempo de enfermedad, sin diferencia estadística significativa. Todos los pacientes cumplieron con los criterios del ACR. El grupo 1 tuvo mejores puntajes con diferencia estadísticamente significativa en la variable EVA entre todos los grupos en la semana 12 y en la variable SF-36 en la semana 12. Conclusiones. Se puede concluir que la asociación GS-CS-MSM-AH por vía oral sería más eficaz de igual seguridad que la asociación GS-CS-MSM en el control de los síntomas de la OA de rodilla.
Técnica de un colgajo: una nueva alternativa en el tratamiento de las fisuras palatinas
Authors: Rossell-Perry Percy , Cotrina-Rabanal Omar
Published: July 2021

Introducción. Diferentes técnicas quirúrgicas para el tratamiento de las fisuras palatinas han sido descritas hasta la actualidad mostrando buenos y malos resultados. La técnica de dos colgajos (Bardach) es la técnica más utilizada en Estados Unidos, sin embargo, esta presenta algunas limitaciones. Objetivo. Presentar los resultados quirúrgicos obtenidos en el tratamiento de las fisuras palatinas unilaterales con una nueva técnica quirúrgica: la palatoplastia de un colgajo. Material y método. El presente es un estudio descriptivo. Se describe una nueva técnica quirúrgica utilizada desde el año 2007 por nosotros y los resultados quirúrgicos obtenidos de 316 pacientes con fisura unilateral completa fueron operados con la técnica de un colgajo entre los años 2007 al 2014. Resultados. El cierre anatómico de los paladares fisurados operados se obtuvo en un 94.31 % de los casos y el cierre funcionalse observó en un 96.84 % de los casos utilizando la técnica propuesta. Se observó un numero de 12 casos que evolucionaron con fístulas palatinas (3.79 %). Otros malos resultados y complicaciones son presentados en este estudio. Conclusiones. Se pudo observar un cierre anatómico y funcional aceptable de las fisuras palatinas con la utilización de la nueva técnica presentada. Los hallazgos observados avalan los aportes propuestos en este artículo con la nueva técnica quirúrgica para el tratamiento de la fisura palatina unilateral.
Intoxicación accidental por mercurio elemental
Authors: Contreras-Camarena Carlos Walter
Published: July 2021

En respuesta a la carta dirigida hacia mi autoría en la investigación titulada “Intoxicación accidental por mercurio elemental”
REGLAMENTO DE ENSAYOS CLÍNICOS EN EL PERÚ Y DECLARACIÓN DE HELSINKI
Authors: Roque-Henriquez Joel Christian , Minaya-Martínez Gabriela Emperatriz , Fuentes-Delgado Duilio Jesús
Published: July 2021

la investigación experimental con personas debe ceñirse a la legislación especial sobre la materia y a los postulados éticos contenidos en la Declaración de Helsinki y sucesivas declaraciones que actualicen los referidos postulados
Cirugía de epilepsia en el Hospital Nacional Guillermo Almenara: primeros siete casos
Authors: Mejía-Tupa Marco Antonio
Published: July 2021

La epilepsia tiene una incidencia de 1 % en la población, de los cuales un tercio no responde al tratamiento farmacológico, que conlleva a discapacidad y morbilidad secundaria. Los pacientes con epilepsia refractaria requieren un estudio multidisciplinario para el origen de la epilepsia y realizar la resección quirúrgica. En cinco pacientes del Hospital Almenara hicimos la evaluación clínica, neuropsicológica, estudio estructural con resonancia magnética, PET y SPECT y videoelectroencefalografía de cuero cabelludo e intracraneal, con lo que realizamos la cirugía resectiva correspondiente. En 71 % de los pacientes se logró la supresión completa de las crisis epilépticas y en 29 % restantes, la disminución de la frecuencia en 75 %. La morbilidad adicional en los pacientes operados fue leve y manejable. El manejo multidisciplinario y tratamiento quirúrgico de la epilepsia refractaria en el hospital Almenara es altamente eficaz y se requiere la implementación de una unidad de Cirugía de Epilepsia.