bluuebunny/crossref_metadata_2025 huggingface dataset:
Strategia podatkowa jako determinanta kreowania wartości przedsiębiorstwa
Authors: Witczak Izabela
Published: March 2023

Przedmiot badań: Przedmiotem własnych badań ankietowych, jak i literaturowych było zweryfikowanie hipotezy badawczej: czy strategia podatkowa jest źródłem kształtowania wartości przedsiębiorstwa, czy przedsiębiorstwa ją wdrażają i monitorują oraz czy są świadome jej znaczenia.
Cel badawczy: Celem rozważań jest próba oceny strategii podatkowej jako źródła kreowania wartości przedsiębiorstwa.
Metoda badawcza: Wykorzystano własne badania ankietowe oraz analizę krytyczną literatury. Do sformułowania wniosków posłużyła metoda dedukcji oparta na dotychczasowym dorobku literaturowym.
Wyniki: Badania autorki wykazały, że wykorzystanie strategii podatkowej zwiększa korzyści w postaci zmniejszenia obciążeń podatkowych i ryzyka podatkowego, co w konsekwencji wpływa na poprawę płynności finansowej. Potwierdzono oddziaływanie na przedsiębiorstwa czynników skłaniających do formułowania i wdrożenia strategii podatkowej, takich jak: nadmierny fiskalizm czy luki w prawie podatkowym. Podejmowane przez przedsiębiorstwo działania w rezultacie wpływają na zwiększenie wartości przedsiębiorstwa.
Invariants of a mapping of a set to the two-dimensional Euclidean space
Authors: KHADJİEV Djavvat , BESHİMOV Gayrat , ÖREN İdris
Published: March 2023

Let $E_{2}$ be the $2$-dimensional Euclidean space and $T$ be a set such that it has at least two elements. A mapping $\alpha : T\rightarrow E_{2}$ will be called a $T$-figure in $E_{2}$. Let $O(2, R)$ be the group of all orthogonal transformations of $E_{2}$. Put $SO(2, R)=\left\{ g\in O(2, R)|detg=1\right\}$, $MO(2, R)=\left\{F:E_{2}\rightarrow E_{2}\mid Fx=gx+b, g\in O(2,R), b\in E_{2}\right\}$, $MSO(2, R)= \left\{F\in MO(2, R)|detg=1\right\}$. The present paper is devoted to solutions of problems of $G$-equivalence of $T$-figures in $E_{2}$ for groups $G=O(2, R), SO(2, R)$, $MO(2, R)$, $MSO(2, R)$. Complete systems of $G$-invariants of $T$-figures in $E_{2}$ for these groups are obtained. Complete systems of relations between elements of the obtained complete systems of $G$-invariants are given for these groups.
Lagrange stability in terms of two measures with initial time difference for set differential equations involving causal operators
Authors: YAKAR Coşkun , TALAB Hazm
Published: March 2023

In this paper, we investigate generalized variational comparison results aimed to study the stability properties in terms of two measures for solutions of Set Differential Equations (SDEs) involving causal operators, taking into consideration the difference in initial conditions. Next, we employ these comparison results in proving the theorems that give sufficient conditions for equi-boundedness, equi-attractiveness in the large, and Lagrange stability in terms of two measures with initial time difference for the solutions of perturbed SDEs involving causal operators in regard to their unperturbed ones.
Uniqueness of the solution to the inverse problem of scattering theory for spectral parameter dependent Klein-Gordon s-wave equation
Authors: KIR ARPAT Esra , KÖPRÜBAŞI Turhan
Published: March 2023

In the present work, the inverse problem of the scattering theory for Klein-Gordon s-wave equation with a spectral parameter in the boundary condition is investigated. We define the scattering data set, and obtain the main equation of operator. Furthermore, the uniqueness of the solution of the inverse problem is proved.
Some refinements of Berezin number inequalities via convex functions
Authors: SALTAN Suna , BASKAN Nazlı
Published: March 2023

The Berezin transform $\widetilde{A}$ and the Berezin number of an operator
$A$ on the reproducing kernel Hilbert space over some set $\Omega$ with
normalized reproducing kernel $\widehat{k}_{\lambda}$ are defined,
respectively, by $\widetilde{A}(\lambda)=\left\langle {A}\widehat{k}_{\lambda
},\widehat{k}_{\lambda}\right\rangle ,\ \lambda\in\Omega$ and $\mathrm{ber}%
(A):=\sup_{\lambda\in\Omega}\left\vert \widetilde{A}{(\lambda)}\right\vert .$
A straightforward comparison between these characteristics yields the
inequalities $\mathrm{ber}\left( A\right) \leq\frac{1}{2}\left( \left\Vert
A\right\Vert _{\mathrm{ber}}+\left\Vert A^{2}\right\Vert _{\mathrm{ber}}%
^{1/2}\right) $. In this paper, we study further inequalities relating them.
Namely, we obtained some refinement of Berezin number inequalities involving
convex functions. In particular, for $A\in\mathcal{B}\left( \mathcal{H}%
\right) $ and $r\geq1$ we show that
\[
\mathrm{ber}^{2r}\left( A\right) \leq\frac{1}{4}\left( \left\Vert A^{\ast
}A+AA^{\ast}\right\Vert _{\mathrm{ber}}^{r}+\left\Vert A^{\ast}A-AA^{\ast
}\right\Vert _{\mathrm{ber}}^{r}\right) +\frac{1}{2}\mathrm{ber}^{r}\left(
A^{2}\right) .
\]
A-Davis-Wielandt-Berezin radius inequalities
Authors: GÜRDAL Verda , HUBAN Mualla Birgül
Published: March 2023

We consider operator $V$ on the reproducing kernel Hilbert space $\mathcal{H}=\mathcal{H}(\Omega)$ over some set $\Omega$ with the reproducing kernel $K_{\mathcal{H},\lambda}(z)=K(z,\lambda)$ and define A-Davis-Wielandt-Berezin radius $\eta_{A}(V)$ by the formula $\eta_{A}(V):=sup\{\sqrt{| \langle Vk_{\mathcal{H},\lambda},k_{\mathcal{H},\lambda} \rangle_{A}|^{2}+\|Vk_{\mathcal{H},\lambda}\|_{A}^{4}}:\lambda \in \Omega\}$ and $\tilde{V}$ is the Berezin symbol of $V$ where any positive operator $A$-induces a semi-inner product on $\mathcal{H}$ is defined by $\langle x,y \rangle_{A}=\langle Ax,y \rangle$ for $x,y \in \mathcal{H}.$ We study equality of the lower bounds for A-Davis-Wielandt-Berezin radius mentioned above. We establish some lower and upper bounds for the A-Davis-Wielandt-Berezin radius of reproducing kernel Hilbert space operators. In addition, we get an upper bound for the A-Davis-Wielandt-Berezin radius of sum of two bounded linear operators.
Formación y graduación de mujeres en el Instituto de Ciencias y Artes de Oaxaca, 1888–1955
Authors:   Universidad Autónoma “Benito Juárez” de Oaxaca, Bailón Vásquez Fabiola
Published: March 2023

The article analyzes the process of insertion, education, and graduation of women in the Institute for Sciences and Arts of Oaxaca (ICAO, its acronym in Spanish) from 1888, the year in which their admission was decreed, to 1955, the year in which the icao became the “Benito Juárez” University of Oaxaca. I argue that these 67 years constitute a period of vital importance to understand the way in which the female presence in the most important university in the state was consolidated. I also demonstrate how the female conquest of the professions in the Oaxacan entity did not occur through long careers, but through short ones, which were more widely accepted for being more practical, simple, and consistent with what is expected of women. My research is based on documentation from the Historical Archive of the “Benito Juárez” Autonomous University of Oaxaca.
Evaluation of the efficiency of sorbents for accidental oil spill response in the Arctic waters
Authors: Vasilyeva Janna , Vasekha Mikhail , Tyulyaev Vladimir
Published: March 2023

The development and operation of new oil fields on the Arctic shelf increases the risks of oil spills, which require the use of oil spill response tools and materials that are efficient in harsh climatic conditions. The question of actual efficiency of sorbents for reducing the level of oil pollution in the conditions of the Arctic and subarctic waters is relevant. The work is aimed at a comparative study of the efficiency of sorbents of mineral and organic origin used by coastal enterprises in the Kola Bay as well as a sorbent based on chitin in model systems simulating real conditions in sea waters. The characteristics of sorption agents were determined applying ASTM F716-18 procedure. Sorption capacity was evaluated in respect of ARCO grade oil, diesel fuel and marine oil. The efficiency of sorbents was estimated in model systems “sea water – oil” at water temperature corresponding to the average annual surface temperature in the Barents Sea. Actual data on sorption capacity of commercial sorbents “Lessorb”, “Novosorb”, a sorbent based on vermiculite and chitin sorbent in relation to potential pollutants of waters were obtained. The dynamics of sea water saturation with oil products at –0.5 (±1) and 10 (±1) °С was determined. It is shown that at higher temperature the concentration of oil products in sea water column (in the presence of an oil film on the surface) is on average four times higher than at low temperature. Kinetic dependences were obtained that describe the content of oil products in water column and near-surface layer of sea water in the presence of the studied sorbents at 5 (±1) °C, corresponding to the average annual temperature in the Kola Bay of the Barents Sea. A method is proposed for evaluating the efficiency of sorbents from the values of regression coefficients characterizing the dependence of oil products content in sea water on the character of sorbent and duration of its action.
CRIMINAL ACCOUNTABILITY FOR CORPORATE CONVICTS IN SPATIAL PLANNING CRIME: HE CONCEPT OF BENEFICIAL OWNERSHIP (BO)
Authors: Zul Syafardan Denny , Sudarsono Sudarsono , Sugiri Bambang , Koeswahyono Imam
Published: March 2023

The aim of the research is to learn more about the concept of beneficial ownership (BO) as an approach for criminal liability in lieu of spatial planning crimes for corporations that lack assets or corporations that can only pay a portion of the crime. Several regions of the Unitary Republic of Indonesia have experienced widespread violations of spatial planning, according to some experts, as a result of substantive weaknesses, including the UUPR’s criminal sanction system’s philosophical, theoretical, and legal flaws, particularly its criminal sanctions for corporations. Theoretically, several theories of corporate criminal responsibility have not been able to reach corporate convicts in spatial planning crimes. The research method uses normative juridical methods. This research method is a legal research method that bases its analysis on applicable laws and regulations that are relevant to the research topic. The results of the study show that the UUPR on corporate criminal sanctions is incomplete, and the formulation of the norms does not address substitute punishment for corporate criminals who lack assets or who can only afford a part of their sentence. The UUPR’s corporate criminal sanctions were not functional as a result of the incompleteness of the norms’ formulation, preventing the achievement of the law’s goals. The term “beneficial ownership” (BO) refers to natural persons who ultimately own or control (ultimately owns or controls) clients and/or people whose transactions are executed on their behalf. The BO concept and regulations regarding BO transparency indicate that it can be used as an approach to reach alternative criminal liability for corporations. In terms of philosophy, the BO concept is consistent with the goal of criminal punishment for corporations; specifically, by imprisoning the actual beneficiary, the payment of the penalty can be used to return the space’s damage to its original state, or at the very least, it can have a deterrent effect on those who use the space in an improper manner. So, for the Ius constituendum it is proposed to formulate criminal norms in lieu of fines for corporations by expanding accountability through the beneficial ownership (BO) concept approach.
LEGAL IMPLICATIONS OF UNCLEAR REGULATION OF RESPONSIBLE SUBJECTS IN THE FULFILLMENT OF HUMAN RIGHTS
Authors: Hermawanto Denny , Sudarsono Sudarsono , Anshari Setia Negara Tunggul , Sugiri Bambang
Published: March 2023

This study aims to provide an in-depth understanding of the legal implications which arise regarding the subject and scope of responsibility for the fulfillment of human rights including the social security rights of Indonesian citizens, as referred to the Constitution as the highest law and to reflect on the purpose of law or constitution (conclusion of law, legal discovery). This type of research is normative juridical, with a philosophical approach, a conceptual approach and a statutory approach. Data analysis was carried out using qualitative techniques with descriptive analysis. The research results show that there is no clarity regarding the legal implications of the subject and the scope of responsibility for the fulfillment of human rights including social security rights. This ambiguity occurs because of the blurring of legal norms regarding human rights in the 1945 Constitution of the Republic of Indonesia, particularly regarding the regulation of the responsibility for the fulfillment of human rights including social security rights, regarding the subjects who must be responsible for and the scope of their responsibilities for implementing social guarantees.
Peculiarites of artistic perception of junior schoolchildren with intellectual disabilities
Authors:   Kamyanets-Podilskyi Ivan Ohienko National University, Lisova Lyudmila , Opalyuk Oleh ,   Kamyanets-Podilskyi Ivan Ohienko National University
Published: March 2023

The given article presents the results of a study of artistic perception of junior pupils with intellectual disabilities. Today special school faces the task of increasing the efficiency of educational process. The results of involvement of works of fine art in education show that in special school the reserves of productive achievement of correctional, developmental and educational tasks are not used fully. The issues of perception of junior schoolchildren with intellectual underdevelopment of artistic images and paintings, their understanding and experience, methods of conducting lessons-conversations in fine arts and relating extracurricular activities intended to form and correct the artistic perception of schoolchildren remain topical. The main purpose of a special school is to prepare a child with intellectual disabilities for community service. It is known that a child with special needs can be prepared for socially useful work on condition that school and family are able to correct, to some extent, the shortcomings of child’s intellectual and physical development, form the right attitude to work and point out the minimum of necessary general and vocational skills. Children’s esthetic education as an integral part of the general system of harmonious development has an important corrective value in achieving this goal. Children’s esthetic education in special school, of course, is polluted due to their general intellectual underdevelopment and weak opportunities in independent artistic creativity. Therefore, the leading role in the development of such pupils belongs to the correctional teacher, as well as parents. Intellectual underdevelopment, low level of cognitive activity, disorders of the emotional and volitional sphere make such work complicated. The esthetic perception presupposes the presence of judgments, evaluations, emotional attitude to the world around. Of course, this does not deal with the development of full aesthetic perception in junior pupils with intellectual disabilities. However, under the influence of correctional and educational work it is possible to reach a certain level of correct judgments and develop a certain aesthetic sensitivity with some elements of aesthetic perception. Thus, insufficient coverage of the problem of perception of fine arts by younger pupils with intellectual disabilities in special literature and the necessity to create pedagogical conditions contributing to tackling the problems of special schools in this sphere, the small use of the potential of fine arts in practice with junior pupils with intellectual disabilities, all that conditioned the relevance of the chosen research topic
Peculiarities of social interaction of children with speech disorders with peers with typical development.
Authors:   Kamyanets-Podilskyi Ivan Ohienko National University, Konstantyniv Oksana
Published: March 2023

One of the important problems of today is the socialization of children with speech disorders. Difficulties in adapting children with speech disorders indicate underdeveloped communication skills and social behavior in general. Depending on the type of speech disorders, children have difficulty mastering the culture and patterns of behavior in general, they have difficulty interacting with the social environment, adequately respond to situational changes in achieving their goals, which can lead to imbalance of behavior. Socialization can be seen as a process of adaptation of the child to the social environment, reaching a certain level of development, the child becomes able to interact with other people. The article analyzes a comprehensive analysis of studies of socialization of children with severe speech disorders. The causes and manifestations of disorders of social interaction of children with speech development disorders with peers with normative development are highlighted. The study focuses on specific manifestations of socialization of children with speech disorders, which are associated with behavioral, emotional and cognitive difficulties. Theoretical studies have revealed the strengths and weaknesses of social interaction of children with severe speech disorders. Weaknesses include social avoidance, hyperactive behavior, inability to work in a team, refusal of interpersonal and group communication with children; aggressive or defensive behavior; avoidance of direct contact with peers, anxiety, elements of autistic traits in behavior. However, in contrast to the described difficulties, the strengths of children's interaction with TPM with peers were identified, namely the ability to make friends, use verbal and nonverbal behavior to make joint decisions with peers and the ability to involve young children in play.
Differential impacts of perceived social support on alcohol and cannabis use in young adults: lessons from the COVID-19 pandemic
Authors: Blumberg Michelle , Lo Lindsay , Harrison Geoffrey , Dodwell Alison , Irwin Samantha , Olmstead Mary
Published: March 2023

Coronavirus (COVID-19) lockdowns provided a unique opportunity to examine how changes in the social environment impact mental health and wellbeing. We addressed this issue by assessing how perceived social support across COVID-19 restrictions alters alcohol and cannabis use in emerging adults, a population vulnerable to adverse outcomes of substance use. Four hundred sixty-three young adults in Canada and the United States completed online questionnaires for three retrospective timepoints: Pre-Covid, Lockdown and Eased Restrictions. Sociodemographic factors, perceived social support, and substance use were assessed. Overall, alcohol use decreased while cannabis use increased during Lockdown. Interestingly, social support negatively predicted alcohol use and positively predicted cannabis use during Lockdown. These findings suggest a difference in motives underlying alcohol and cannabis use in emerging adults. Importantly, these changes were not sustained when restrictions eased, suggesting that emerging adults exhibit resiliency to the impacts of COVID-19 restrictions on substance use.
Principles of resource allocation and triage during COVID-19
Authors: Ajzenberg Henry , Oczkowski Simon
Published: March 2023

The COVID-19 pandemic confronted Canadians with the fact that our health care systems may not always have enough to go around. Critical care resources, specifically, were stretched far beyond the limits of what was thought possible. In the spring of 2021, the exponential growth of patients with COVID-19 brought Ontario’s ICUs frighteningly near the breaking point. When a health system’s resources are overwhelmed by the demands placed upon them, allocation of scarce resources is typically performed by triage — a formalized system to determine who receives critical care resources and who does not. In this commentary, we will explain the rationale for the use of a formal triage protocol during times of resource scarcity; review the ethical foundations of an approach to resource allocation; outline the process of triage protocol development in Ontario during the COVID-19 pandemic, and highlight some lessons learned for the future.
Characteristics and clinical outcomes of patients with acute myeloid leukemia with inv(3)(q21q26.2) or t(3;3)(q21;q26.2)
Authors: Richard-Carpentier Guillaume , Rausch Caitlin R. , Sasaki Koji , Hammond Danielle , Morita Kiyomi , Takahashi Koichi , Tang Guilin , Kanagal-Shamanna Rashmi , Bhalla Kapil , Dinardo Courtney D. , Borthakur Gautam , Pemmaraju Naveen , Shpall Elizabeth J. , Alousi Amin , Daver Naval G. , Garcia-Manero Guillermo , Konopleva Marina Y. , Ravandi Farhad , Kantarjian Hagop M. , Kadia Tapan M.
Published: March 2023

Acute myeloid leukemia (AML) with inv(3)(q21q26.2)/t(3;3)(q21;q26.2) has a very poor prognosis. Determinants of clinical outcomes and optimal treatment remain uncertain. We retrospectively reviewed 108 cases of AML with inv(3)/t(3;3) and evaluated clinicopathological characteristics and clinical outcomes: 53 newly diagnosed (ND) AML and 55 relapsed/refractory (R/R) AML. Median age was 55 years. White blood cell (WBC) count ≥ 20 x 109/L and platelet count ≥ 140 x 109/L was observed in 25% and 32% of ND patients, respectively. Anomalies involving chromosome 7 were identified in 56% of patients. The most frequently mutated genes were SF3B1, PTPN11, NRAS, KRAS and ASXL1. In ND patients, the composite complete remission (CRc) rate was 46% overall; 46% with high-intensity treatments and 47% with low-intensity treatments. The 30-day mortality was 14% and 0%, with high- and low-intensity treatment, respectively. In R/R patients, the CRc rate was 14%. Venetoclax based-regimens were associated with a CRc rate of 33%. The 3-year overall survival (OS) was 8.8% and 7.1% in ND and R/R patients, respectively. The 3-year cumulative incidence of relapse was 81.7% overall. Older age, high WBC, high peripheral blast count, secondary AML and KRAS, ASXL1, DNMT3A mutations were associated with worse OS in univariable analyses. The 5-year OS rates were 44% and 6% with or without HSCT in CR1, respectively. AML with inv(3)/t(3;3) is associated with low CR rates, very high risk of relapse and dismal long-term survival. Intensive chemotherapy and HMA provide similar rates of remission and patients achieving CR benefit from HSCT in CR1.
El neuromarketing y su aporte al fortalecimiento de la imagen de locales comerciales en Leónidas Plaza
Authors: Lemoine Quintero Frank Angel , Villacis Zambrano Lilia Monserrate , Villón Panta Franklin Efrén , Montesdeoca Calderón María Gabriela
Published: March 2023

A partir de las acciones realizadas por el proyecto “Los Passaos: Emprenden con Historia”, se pretende como objetivo realizar un diagnóstico de la imagen comercial para evaluar los elementos que integran la marca en los negocios ubicados en la parroquia de Leónidas Plaza, con la finalidad de valorar los elementos gráficos que conforman parte del diseño de identidad comercial como estrategia de posicionamiento. El estudio se centró en un enfoque cuantitativo y descriptivo-exploratorio, y la muestra consistió en 389 negocios seleccionados mediante un muestreo por conveniencia no probabilístico. Entre los resultados más representativos se encontró que la gigantografía fue reconocida como “algo adecuada” (50 %), al igual que la señalética interna, reflejado por el 31.6 % de los encuestados y la identidad corporativa de los trabajadores reconocida como “algo inadecuada”, representando el 36.8 % del total de los locales evaluados, denotando una falencia de los negocios en estos tres elementos. El alfa de Cronbach de 0.847 reconoce una fiabilidad muy buena del instrumento. Se concluye que se debe de innovar en el desarrollo de la imagen comercial para crear, a nivel visual de los clientes, mejores expectativas, recomendando continuar trabajando a nivel de los estados de gestión, con el fin de alcanzar una mejor proyección, enfoque empresarial y una comunicación visual a nivel de consumidor.
Análise da cobertura vacinal em crianças menores de dois anos em um município da Baixada Maranhense no período de 2017-2019
Authors: Ferreira Rayana Larissa Silva , Oliveira Francisca Eliane Moraes de , Ribeiro Tays Campos , Freitas Dayanne da Silva , Marins Josafá Barbosa , Morais Cintia Daniele Machado de , Barros Lidiane Andréia Assunção
Published: March 2023

A pesquisa teve como objetivo analisar a cobertura vacinal (CV) em crianças menores de dois anos em um município da Baixada Maranhense. Trata-se de uma pesquisa descritiva, com abordagem quantitativa, utilizando dados coletados no Sistema de Informação do Programa Nacional de Imunização (SI-PNI) referentes à cobertura vacinal de crianças menores de 2 anos, do município de Pinheiro – MA, no período de 2017 a 2019. Os dados foram tabulados em uma planilha no Excel 2016, versão 1905. As variáveis foram apresentadas em números absolutos e relativos, sob a forma de tabela. Os resultados apresentaram dados referentes aos imunobiológicos: BCG, DTP, Febre Amarela, Hepatite A, Hepatite B, Meningocócica, Pentavalente, Pneumocócica, Poliomielite, Rotavírus Humano, Tetra viral, Tríplice Viral. Diante disso, observou-se que, o município de Pinheiro – MA se encontra vulnerável em relação a cobertura vacinal para sarampo, caxumba, rubéola, hepatite B, poliomielite, dentre outras, visto que as metas preconizadas pelo Ministério da Saúde foram alcançadas apenas para BCG e Hepatite B em crianças menores de 30 dias de vida, no ano de 2018. A pesquisa teve como limitação a subnotificação referente a imunização infantil no período em análise.
Teatro de fantoches como recursos alternativos para o ensino de morcegos
Authors: Silva Rosângela Margarida da , Silva Dayanne Cicera da , Silva Crislaine Maria da , Silva Luiz Augustinho Menezes da
Published: March 2023

The puppet theater is an alternative teaching resource for the development of activities aimed at Environmental Education, with the aim of facilitating teaching and student learning, streamlining classes and demystifying incoherent aspects. In this research, it has a qualitative approach and is characterized as a participant. We used a theatrical play to teach students Biology content, such as the importance of bats and more information about these animals, in a relaxed way, and to deconstruct the negative perceptions they have about bats. Students from public and private schools, aged between three and twelve, participated in the event. Theatrical presentations took place in schools and in the auditorium of the Dois Irmãos State Park, lasting 40 minutes, and were conducted taking into account the age group and interactions (questions) of the audience. When the presentation of the play ended, students were encouraged to draw pictures of bats. To collect the information, we used three methods: notes on the students' perceptions in the on-board notebook before and during the puppet theater; analysis of the drawings produced and analysis of the sentences produced in the materials. To analyze the data, we used observation and the methodology of the collective subject discourse and imagery analysis of the drawings produced. Over the course of the intervention, we found that the students changed their negative perception they had about these animals to a positive one and reconstructed previous distorted concepts. Of the 88 materials analyzed, 73 represented bats in a positive way, through drawings or written information. The results of the research indicated that the puppet theater is a viable and effective didactic resource for students to learn the content 'bats' in Early Childhood Education and early years of Elementary School.
Effect of surgical staples and stitches on the critical swimming speed of Sebastes schlegelii after implantation of ultrasonic pingers
Authors: Gong DH , Xing BB , Song MY , Cui XJ , Yu XM , Tian T , Yin LM
Published: March 2023

Implantation of ultrasonic pingers in fish is invasive in nature, as it bisects epidermis and skin tissues, with negative health impacts on the individual. Taking Korean rockfish Sebastes schlegelii as a model species, we compared the difference between using surgical sutures and disposable-staple sutures so as to minimize the impact caused by implantation. The results showed that (1) the critical swimming speed of S. schlegelii changed significantly 2 h after surgery but did not change significantly 1 d after the operation; (2) both suture methods can effectively close the wound; and (3) it takes less time to suture the wound with disposable skin staples than with a surgical needle. The abdominal incisions of the experimental fish were clean, the fish showed no inflammation or necrosis after suture by the 2 methods, and they remained healthy for 7 d after operation. We conclude that disposable skin staples are well suited for minimally invasive surgical suturing.
Demographic response of a high-Arctic polar bear (Ursus maritimus) subpopulation to changes in sea ice and subsistence harvest
Authors: Laidre KL , Arnold TW , Regehr EV , Atkinson SN , Born EW , Wiig Ø , Lunn NJ , Dyck M , Stern HL , Stapleton S , Cohen B , Paetkau D
Published: March 2023

Climate change is a long-term threat to polar bears. However, sea-ice loss is hypothesized to provide transient benefits in high latitudes, where thick multiyear ice historically limited biological productivity and seal abundance. We used joint live-recapture and dead-recovery mark-recapture models to analyze data for one of the most northerly polar bear subpopulations, Kane Basin. The data consisted of 277 initial live captures and genetic identifications (1992-1997 = 150, 2012-2014 = 127), 89 recaptures or re-identifications (1992-1997 = 53, 2012-2014 = 36), and 24 harvest returns of research-marked bears during 1992-2014. We estimated mean annual abundance of 357 bears (95% CI: 221-493) for 2013-2014. This suggests a likely increase relative to our estimate of 224 (95% CI: 145-303) bears in the mid-1990s and relative to a previously published estimate of 164 (95% CI: 94-234) bears in the mid-1990s that used some of the same data. This is also supported by an apparent increase in the density of bears in eastern Kane Basin during 2012-2014. Estimates of total survival for females ≥3 yr old (mean ± SE: 0.95 ± 0.04) and their dependent offspring were similar to previous estimates from the 1990s, and estimates of unharvested survival for females ≥3 yr (0.96 ± 0.04) appear sufficient for positive population growth. Estimates of total survival were lower for males ≥3 yr (0.87 ± 0.06). We documented a reduction in mortality associated with subsistence harvest, likely attributable to implementation of a harvest quota by Greenland in 2006. Our findings, together with evidence for increased range sizes, improved body condition for all sex and age classes, and stable reproductive metrics, show that this small high-Arctic polar bear subpopulation remains productive and healthy. These benefits are likely temporary given predictions for continued climate change.
BASIC CONTEXT OF DESIGN METHODOLOGY FOR TESTING WOOD-BASED ELEMENTS
Authors: ŠVAJLENKA JOZEF , KOZLOVSKÁ MÁRIA
Published: March 2023

Timber-based constructions are increasingly becoming increasingly popular within Slovakia. This provides the ability for many manufacturing and manufacturing companies to offer different wood-based construction systems. In the framework of the offer in Slovakia, most frequently realized are panel, column and log-based construction systems based on wood. While the manufacturers and implementation companies themselves declare the thermal properties of their products only on the basis of computational methods, there is a need to verify the thermal-technical properties of the offered structures even in laboratory conditions. Therefore, the aim of this manuscript is to present a selected context of the methodology for verifying the thermal-technical properties of selected structural variants for assessment under laboratory conditions.
GRAPHIC DESIGN IN THE PROFESSIONAL TRAINING OF FUTURE SPECIALISTS
Authors: ROHOTCHENKO OLEKSII , ZUZIAK TETIANA , ROHOTCHENKO SVITLANA , KIZIM SVITLANA , SHPYTKOVSKA NATALIIA
Published: March 2023

The attendance of a slowdown in the level of experiences and skills formed in grads from the actual practical expert context leads to the necessity to revise and transform the scholarly complex. Modern professional preparation of future specialists is characterized by the renewal of the methodological material and innovative technology and software tools, advanced technologies, methods, and forms of education. An essential element of educational innovations is the revision of professional competencies and a change in their content component. In this paper, on the example of training future specialists, the intensification of educational and methodological support and the formation of a graphic vector to develop acknowledged competencies are considered. A unique role is given to the development of visual competence as a response to the current pace of improvement of software and hardware for vocational training, the introduction of new information and communication training tools, and the professional sphere's needs in highly qualified specialists. The article examines the features of the use of traditional graphic tools and computer technologies at different stages of the project activities of future specialists. The analysis of thought processes accompanying tutorial project activities is given. The advantages of using computer technologies in the educational process at the final stages of design are shown.
IMPACT OF SHORT-TERM EDUCATIONAL ACTIVITIES ON PUPILS' ATTITUDES TOWARDS WASTE IN DISTANCE EDUCATION
Authors: IĽKO IVAN , PETERKOVÁ VIERA , MARTINCOVÁ ROMANA , PREINEROVÁ KARIN
Published: March 2023

The aim of the work was to apply short-term educational activities to primary school pupils and to find out their influence on pupils' attitudes, compared to the traditional way of teaching. We observed differences between the cumulative mean scores of girls (x = 2,1) and boys (x = 2,4). We showed no difference in the cumulative mean scores of 7th and 8th graders. The pre-test data were at the level of statistical significance (p = 0,0521), with the experimental group (E) performing worse on mean score (x = 2,61) than the control group (K) (x = 2,31). The values correlated with the end-of-year grade in the biology and chemistry subjects. A paired t test revealed a statistically significant difference in the experimental group between the cumulative means of the pre-test and post-test (p = 0,0419) and the pre-test and retention test (p = 0,0354). A statistically significant difference was also observed in the individual dimensions (separation, recycling and production). In the control group, there was no statistically significant difference between the individual tests and dimensions. We have demonstrated the effective use of inquiry-based learning during the Covid-19 pandemic.
“SILENT INTONATION” AS A COMMUNICATIVE PHENOMENON OF CHAMBER-ENSEMBLE PERFORMANCE
Authors: POVZUN LIUDMILA , OVSIANNIKOVA-TREL OLEXANDRA , MOGYLEVSKA IRYNA , FILATOVA OLHA , LISOVA OLHA
Published: March 2023

The principle of unity in multifacetedness is the basis of chamber-ensemble performing art and is presented as a diversity that differs as a quantitative/qualitative structure of instrumental compositions, formed based on a combination of different textural-register and timbre-dynamic qualities. Accordingly, the creative personalities, their emotional and psychological state, technological and executive capabilities are also different. It is shown that the formation of a common artistic concept requires the coordination of all components of the ensemble-performance complex. The mechanism of the formation of intonational unity in the ensemble is shown.
Demokrasinin Kadınların İş Gücüne Katılımı Üzerindeki Etkisinde Eğitimin Aracılık Rolü: Panel Veri Analizi
Authors: DEMİRTAŞ Gökhan , ÇİÇEK Sevil
Published: March 2023

Eğitim gibi temel ihtiyaçlarını karşılayamayan kadınlar, demokratik gelişmelerden yararlanmada zorluklar çekmektedir. Bu çalışma, 2002-2018 dönemi boyunca gelişmiş ve gelişmekte olan 165 ülkede demokrasinin kadınların iş gücüne katılımı üzerindeki etkisinde eğitimin aracılık rolünü incelemektedir. Bu amaçla Driscoll-Kraay tahmincisi kullanılarak sabit etkiler modeli uygulanmıştır. Modelde, istihdamda cinsiyet eşitsizliğini temsil eden kadın bölü erkek iş gücüne katılma oranı bağımlı değişkendir. Bu değişken, kadınların demokratik düzenlemelerden erkeklere göre daha fazla yararlanıp yararlanmadığını göstermesi açısından önemlidir. Ek olarak model, demokrasi düzeyi ile eğitim endeksi arasında bir etkileşim terimine sahiptir. Bu etkileşim terimi, demokrasinin kadınların iş gücüne katılımı üzerindeki etkisini artırmak için eğitim endeksinin hangi eşik düzeyinin uygun olduğunu anlamaya yardımcı olmaktadır. Çalışmanın temel sonucuna göre demokrasinin kadın bölü erkek iş gücüne katılma oranı üzerindeki etkisinde eğitimin aracılık rolü vardır. Eğer eğitim endeksi eşik değeri (0.64) aşarsa, demokrasi kadınların iş gücüne katılımını pozitif etkilemektedir. Bu
bulgudan hareketle politika yapıcılar, iş gücüne katılımda cinsiyet eşitliği için demokratikleşme politikalarını geliştirirken eğitim altyapısına yönelik yatırımlara odaklanmalıdır.
The Frequencies of Amino Acids in Secondary Structural Elements of Globular Proteins
Authors: NACAR Cevdet
Published: March 2023

Objective: The frequencies of amino acids in proteins for different structural levels have been determined by many studies. However, due to the different content of data sets, findings from these studies are inconsistent for some amino acids. This study aims to eliminate the contradictions in the findings of the studies by determining the frequencies of the amino acids in all structural level of globular proteins.

Methods: The frequencies of the amino acids in overall protein, in secondary structural elements (helix, sheet, coil) and in subtypes of secondary structural elements (α-, π-, and 310-helices, and first, parallel and anti-parallel strands) were calculated separately using a data set including 4.882 dissimilar globular peptides. The frequencies of the amino acids were calculated as the ratio of the total number of a specific residue in related structure to the total number of all residues in the related structure.

Results: The frequencies of residues determined in this study is partially in consistent with the other studies. The differences are probably due to the data set contents of the studies. The frequencies of the amino acids in subtypes of secondary structural elements were determined for the first time in this study.

Conclusions: Variations in the frequencies of PRO residue in 310-helix structure and of ILE, LEU, and VAL residues in strands of sheet structure are valuable findings for the improvement of secondary structure prediction methods, as they can be used as secondary structural elements markers.
A Novel Multi-Pump System for Hydraulic Actuation in Electric Mobile Machinery
Authors: De Cantuaria Gama Artur Tozzi , Heybroek Kim , Ericson Liselott
Published: March 2023

An observable trend nowadays is the change in the prime movers of mobile heavy machinery to electric alternatives to achieve more eco-friendly equipment. These solutions often require large and heavy batteries with limited capacity, making the research of more efficient components and the development of different system architectures an important topic of study. Hydraulic actuation is still a relevant application for these vehicles because of its reliability, controllability, and high power density. The electrification and digitalization of mobile machinery allow for innovative designs and control strategies to be implemented that take advantage of electro-hydraulic systems and their characteristics. Similar research has shown that a higher number of degrees of freedom allow for the system to operate with higher total efficiency. This paper introduces a novel actuation architecture that combines multiple fixed displacement hydraulic pumps and on/off directional valves to control the position and force of two hydraulic actuators for the working functions of a mobile machine. Each pump is powered by a variable speed electric drive so that each one can be operated independently, and together with the set of directional valves, allows the selection of different combinations of pumps and flow sharing between the actuators’ chambers to achieve the desired flow and pressure on each cylinder. The multi-pump system favours the use of smaller pumps, and the possibility of combining their flows reduces the need to operate the components at lower efficiency points such as partial displacement. At the same time, controlling the pumps’ flow through the variable-speed electric motors means that throttling valves are not needed. The development of this architecture will allow for its use in mathematical models to analyse its behaviour and efficiency and to obtain insights regarding points of improvement in the system architecture.
Digital Hydraulic Actuators: An Alternative for Aircraft Control Surfaces
Authors: Oliveira e Silva Dimitri , Nostrani Marcos Paulo , Lopes Junior Rodrigo Simões , De Negri Victor Juliano
Published: March 2023

In the last decades, digital hydraulics has emerged as a new alternative for the development of more efficient hydraulic systems, where the effects of throttling losses and internal leakages are minimized through the use of conventional hydraulic components associated in parallel or through switching hydraulics. In the aviation industry, hydraulic systems are commonly applied to control highly relevant systems, such as landing gear and flight control surfaces. In this context, digital hydraulics can be used as an alternative solution to improve the energy efficiency of aircraft hydraulic systems. Based on that, this paper aims to present three new hydraulic actuators for application on aircraft flight control surfaces using digital hydraulics. The actuators are being studied by the Laboratory of Hydraulic and Pneumatic Systems - LASHIP of the Federal University of Santa Catarina - UFSC and are called Digital Hydraulic Actuator - DHA, Digital Electro Hydrostatic Actuator - DEHA and Variable Speed Digital Electro Hydrostatic Actuator - VSDEHA. The simulation results show that the actuators developed can be 23 times more efficient than conventional servo-hydraulic actuators, with equivalent dynamic characteristics, demonstrating the potential for application of these new actuators in aeronautical systems.
Energy Efficiency Analysis and Experimental Test of a Closed-Circuit Pneumatic System
Authors: Nazarov Fedor , Weber Jürgen
Published: March 2023

In a closed-circuit pneumatic system the air from the pneumatic cylinder is not exhausted directly in the atmosphere, as done in traditional open-circuit systems, but is captured and fed to the compressor inlet. This provides an opportunity to increase the compressor inlet pressure above the atmospheric and consequently enables both higher compression efficiency and volumetric flow rate. Until the present, the advantages of the closed-circuit pneumatics were assessed only within theoretical studies without being verified experimentally due to uncertainties in performance of a real compressor under oscillating pressure and flow rate, as well as due to a risk of mutual cylinder interference caused by differences in load and required pressure profiles. Hence, this study focuses on experimental investigation of energy efficiency and practicability issues of the closed-circuit pneumatics. It is shown that simultaneous operation of two pneumatic cylinders of different size (Ø32×200 and Ø50×200) performing different tasks (high-dynamic mass handling and extension against the constant force) does not have any negative effect neither on the cylinder dynamics nor on the compressor performance. Inlet pressure increase up to 1.5 barrel leads to by factor 2.5 higher volumetric flow rate and total efficiency gain of 72 % (increase from 10.7 % to 18.4 %). The experimentally obtained results show a great potential of the closed-loop pneumatics and indicate the need in further research into design and control methods of such systems to enable technology deployment to the industry. Industrial applications can profit from the reduced energy consumption especially in case of pneumatic systems with decentralized air supply.
Optimization of Pressure Relief Grooves for Multi-Quadrant Hydraulic Machines in Different System Architectures
Authors: Heeger Thomas , Ericson Liselott
Published: March 2023

In hydraulic axial piston machines, each chamber switches between the high-pressure and the low-pressure port with every revolution. How this process, the commutation, is done, is an essential part of pump design. The commutation typically targets a smooth pressure transition to minimize compressible flow pulsations. However, an ideal pressure match is not possible over the whole operating range of the machine. Thus, pressure relief grooves are considered a “necessary evil” in the state of the art, which can reduce flow pulsations over a wide operating range on the expense of slightly increased losses. Depending on the drive cycle and especially the number of quadrants a hydraulic machine is used in, the optimal pressure relief groove design differs. The increased losses and pulsations for enabling 4-quadrant operation of hydraulic machines are shown.
Pump-controlled systems lead to hydraulic machines running in different drive cycles than in conventional valve-controlled systems, affecting ideal groove design. This paper focuses on how to optimize pressure relief grooves and thus presents the methodology incl. the simulation model, formulation of the objective function, and choice of optimization algorithm. Optimizations are carried out for 1-, 2- and 4-quadrant operation. Pareto fronts for a trade-off between flow pulsations and losses are presented, for both a valve-controlled system and a pump-controlled system carrying out the same task in an excavator boom application.
Development of Pneumatic Technology for Automation and Control of Small Hydropower Plants
Authors: Vigolo Vinícius , Picolotto Conterato Gregori , De Negri Victor Juliano
Published: March 2023

Small hydropower plants have been seen as a more sustainable source of energy in comparison with large hydropower plants due to the smaller required flooding area. However, every source of energy production has, inevitably, an impact on the environment. Aiming to reduce the usage of fossil-based products, such as hydraulic oil, a joint effort has been made between the Laboratory of Hydraulic and Pneumatic systems and the companies Reivax Automation and Control and China Three Gorges, in order to introduce the pneumatic technology to the hydrogeneration sector. Characteristics such as easy installation and maintenance, low acquisition costs, and mainly, low environmental impact, make the pneumatic technology an excellent candidate to replace the hydraulic servo actuators that have been traditionally used for automation and control in hydropower plants, which use large quantities of hydraulic oil and provide a high risk of a river bed contamination due to possible leakages or incorrect disposal of hydraulic oil. This paper presents two cycles of development of a pneumatic solution to automate and control the generating unit of small hydropower plants. It includes the first proposed solutions, proof of concepts and drawbacks that were faced, as well as the new challenges and achievements that rose during the design process. The paper also presents the most up-to-date results from a pilot project where a fully pneumatic solution was applied for a generating unit with 438 kVA of generating capacity and a model of development that was identified based on common activities performed during the first two cycles of development.