bluuebunny/crossref_metadata_2025 huggingface dataset:
Nest camouflage in Metapolybia cingulata and nesting and colony defensive behavior in Metapolybia docilis (Vespidae: Polistinae) in the Brazilian Atlantic Forest
Authors: Souza Marcos Magalhães de , Barbado Norma , Almeida José Adolfo Mota de , Teófilo-Guedes Gabriel , Zanuncio José Cola
Published: December 2022

Colony defense by social wasps includes aggressive behavior and camouflage with a high diversity of adaptation of their nests to the environment, including substrate choice. The objective of this study was to present new data on nesting and colony defense by the Neotropical social wasps Metapolybia cingulata and Metapolybia docilis (Hymenoptera: Vespidae). Field observations were made on January 4th and 5th, 2022 at the State Park of Iguaçu, state of Paraná, Brazil, on M. cingulata and M. docilis nests and information on nesting of these wasps obtained in 2014 at the Pandeiros River Wildlife Refuge (REVIS), and in 2012 at the Rio Doce State Park, state of Minas Gerais, Brazil. The types of substrates used by M. cingulata and M. docilis reinforce the importance of nest camouflage as a defense strategy for their colonies. The selection of nesting sites by these species was very variable.
Sobre corpo, tempo e presença
Authors: Leal Gomes Pedro
Published: December 2022

O objetivo deste artigo é pensar as questões do corpo e da temporalidade na tradição fenomenológica, especificamente em algumas obras de Hans Ulrich Gumbrecht e Jean-Luc Nancy. Minha hipótese é de que o corpo surge para os autores em sua contemporaneidade como uma urgência ético-política, produzindo em suas escritas uma radicalização do corpo em comparação a outras fenomenologias. Desta forma, poderei pensar as consequências dessa radicalização do corpo na escrita da história contemporânea, tendo em vista que a questão do corpo também parece ser decisiva neste momento. Por fim, buscarei pensar formas de trazer o corpo para o texto e colocar o texto no corpo, com a intenção de imaginar formas diferentes de escrever e experimentar a história.
Sertão dos Currais
Authors: Silva José Natan Gonçalves da , Menezes Sônia de Souza Mendonça
Published: December 2022

A expansão da pecuária no semiárido alagoano ocorreu aliada à constituição de latifúndios. Todavia, processos de compra e venda da terra entre pequenos e grandes proprietários, bem como, a reestruturação fundiária refletida na criação de assentamentos rurais, possibilitaram, também, a formação de estabelecimentos agropecuários mantidos por pequenos criadores de gado. Diante disso, este artigo tem como objetivo analisar as dinâmicas da pecuária e da produção agroalimentar do queijo coalho protagonizadas por agricultoras e agricultores familiares no Território da Bacia Leiteira – TBL, semiárido de Alagoas. A metodologia está embasada em pesquisas bibliográficas, análise documental e estatística sobre a estrutura fundiária e agropecuária do território e investigações de campo junto a 50 agricultores familiares. A pesquisa de campo fundamenta-se na técnica snowball e na aplicação de entrevistas semiestruturadas. Os resultados denotam que a emergência de pequenos pastores de gado e de assentados da reforma agrária viabilizou a incorporação das práticas da pecuária pela agricultura familiar, que realiza, concomitantemente, as atividades da bovinocultura leiteira e da produção e comercialização do queijo coalho.
Fitogeografía de la provincia Altoandina del Cono Sur de Sudamérica
Authors: Biganzoli Fernando , Oyarzabal Mariano , Teillier Sebastián , Zuloaga Fernando O.
Published: December 2022

The flora of high mountain areas is one of the least known and one of the most threatened by climate change. In addition, the phytogeographic delimitation of the mountains is difficult and not accurate enough. In this work we describe the flora of the Altoandina province in the Southern Cone of South America based on the geographical distribution of taxa exclusive to this province, we characterize the subdivisions at a regional level and generate a map of the identified districts. The results show that 883 taxa are exclusive of this province, of which 151 are only present in Chile, 220 in Argentina, and 512 are shared by both countries or are also present in Bolivia or other Andean countries. Asteraceae, Poaceae, Fabaceae, and Violaceae are the richest families in the province, while Senecio, Viola and Nototriche are the richest genera. Through a network-based analysis, we confirm the presence of three Districts in the Altoandina province: Quechua, Cuyano-Pikumche, and Nothoandino. This work aims to contribute to the knowledge on geographical patterns of the High Andean flora and its conservation.
Serum levels of kynurenine in pregnancies with fetal growth restriction and oligohydramnios
Authors: Yaman Selen , Ceyhan Meryem , Hancerliogullari Necati , Koc Esin Merve , Candar Tuba , Tokmak Aytekin
Published: December 2022

Objectives

Kynurinine (KYN) and its metabolites, which are released during the metabolism of tryptophan, an essential amino acid, have many important functions, such as cellular energy production, regulation of vascular tone, and regulation of the immune system. In this study, we aimed to detect serum KYN levels, which may be an indicator of KYN pathway activity, in idiopathic fetal growth restriction (FGR) and oligohydramnios cases whose pathophysiology is known to be affected by multiple factors, such as placental hypoperfusion, immune dysregulation, and maternal nutrition disorder, and to investigate their relationship with these common obstetric complications.

Methods

This cross-sectional case-control study was carried out in the antenatal outpatient clinics of Ankara City Hospital between July and December 2021. While the study group consisted of pregnant women with idiopathic isolated FGR and oligohydramnios, the control group consisted of low-risk patients who did not have any problems. The clinical features of the patients, such as age, body mass indexes, and gestational week, were recorded by measuring basic laboratory parameters and serum KYN levels.

Results

A total of 110 patients were included in this study. The patients were divided into three groups: FGR, oligohydramnios, and the control group. There was no significant difference between the patients’ ages, weeks of gestation, or body mass indexes. Serum KYN level was calculated as 57.8 ± 13.4 pg/mL in IUGR, 75.3 ± 10.8 pg/mL in oligohydramnios and 95.1 ± 13.3 pg/mL in the control group (p<0.001).

Conclusions

Serum KYN levels were lower in pregnant women complicated with FGR and oligohydramnios more prominently in pregnant women diagnosed with FGR than in normal pregnancies. The results suggest that KYN plays an important role in either the etiopathogenesis or the response to these two obstetric pathologies.
Cognitive Determination of Musical Thinking and Musical Self-concept of Students and Musicians: Comparative Diagnostics, Aspects of Modeling and Forecasting
Authors: Mazur Iryna , Нrinchenko Tеtіana , Teplova Olena , Onofrichuk Liudmyla , Priadko Olena
Published: December 2022

The article’s purpose is to define the cognitive determination of musical thinking and musical self-concept of students and musicians, considering the cognitive style of the individual, analytical-holistic thinking, and individual psychological abilities. The study applies the diagnostic technique for the cognitive style of individuality (T. Dudnikova, O. Volkova), analysis-holism scale (Choi, Koo, and Choi), Cattell test (16PF - C), musical thinking questionnaire developed by authors (I. Mazur, T. Нrinchenko, O. Teplova, L. Onofrichuk, O. Priadko). The study presents the first approbation of the musical thinking questionnaire developed by the authors, the integral indicator of which is measured on the following scales: emotional response to music, emotional-intonational (melodic) ear, harmonic ear for music, perceptual ear for music, musical-rhythmic sense, musical memory, performing emotionality, musical-creative imagination – insight into the essence of the musical image, musical-creative imagination – interpretation of the musical image, sense of the whole – sense of tempo-rhythm, sense of the whole – a sense of shape, sense of the whole – sense of style, sense of the whole – the sense of the logical development of the piece of music, cognitive activity, self-regulation, ability to work. The authors empirically determine that the musical thinking of students is based on advanced abilities in terms of the sense of the whole – the sense of shape, emotional response to music, and the sense of the logical development of the piece of music. Dominants in musicians’ musical thinking are the emotional response to music, musical-creative imagination – insight into the essence of the musical image, and high cognitive activity.
Development of Learning Media using Powtoon Application on Liquid Pressure Topic
Authors: Rasid R , Paramata P , Yunginger Y , Odja O , Bouty B , Setiawan S
Published: December 2022

A valid, practical, and effective cartoon-based learning media on liquid pressure material has been developed by employing the Powtoon application and using Four-D (4D) stages. Expert validity and empirical validityof the media achieved an average score of 3.94 and 3.84 respectively with very valid criteria. The test instrument validity score was 3.37 with valid criteria. Supporting data for implementation is obtained using several instruments. The learning implementation observation sheet is used to observe teacher activity in the classroom; student responses were collected through questionnaires; and student activity is observed through the observation sheet. The practicality quality of teaching materials is obtained a percentage of 100% with very good criteria. The student responses to indicators of learning motivation with a percentage of 86.7%, indicators of ease and satisfaction of learning with a percentage of 84.7, learning innovation indicators with a percentage of 87.8%, and learning achievement indicators with a percentage of 89.2%. The effectiveness of the teaching material was obtained from observing student activities with a percentage of 86% in meeting I and of 88.7%% in meeting II. The student’s competency C2 (describing) achieve a percentage of 88.7%, C3 (applying) with a percentage of 81.75%, C4 (analyzing) with a percentage of 93.25%, and C5 (proving) with a percentage of 73%, all in good criteria. Learning outcomes in classical completeness obtains a percentage of 93.3%. It can be concluded that learning media in the form of teaching materials using the Powtoon application has the potential to increase students' understanding of concepts.
Generalized fractional inequalities of the Hermite-Hadamard type via new Katugampola generalized fractional integrals
Authors: Omaba M.
Published: December 2022

A new generalization of the Katugampola generalized fractional integrals in terms of the Mittag-Leffler functions is proposed. Consequently, new generalizations of the Hermite-Hadamard inequalities by this newly proposed fractional integral operator, for a positive convex stochastic process, are established. Other known results are easily deduced as particular cases of these inequalities. The obtained results also hold for any convex function.
Existence and stability of traveling waves in parabolic systems of differential equations with weak diffusion
Authors: Klevchuk I.I.
Published: December 2022

The aim of the present paper is to investigate of some properties of periodic solutions of a nonlinear autonomous parabolic systems with a periodic condition. We investigate parabolic systems of differential equations using an integral manifolds method of the theory of nonlinear oscillations. We prove the existence of periodic solutions in an autonomous parabolic system of differential equations with weak diffusion on the circle. We study the existence and stability of an arbitrarily large finite number of cycles for a parabolic system with weak diffusion. The periodic solution of parabolic equation is sought in the form of traveling wave. A representation of the integral manifold is obtained. We seek a solution of parabolic system with the periodic condition in the form of a Fourier series in the complex form and introduce a norm in the space of the coefficients in the Fourier expansion. We use the normal forms method in the general parabolic system of differential equations with retarded argument and weak diffusion. We use bifurcation theory for delay differential equations and quasilinear parabolic equations. The existence of periodic solutions in an autonomous parabolic system of differential equations on the circle with retarded argument and small diffusion is proved. The problems of existence and stability of traveling waves in the parabolic system with retarded argument and weak diffusion are investigated.
“Lying Flat” and Rejecting the Rat Race: The Survival Anxiety of Chinese Youth
Authors: Zhou Changheng
Published: December 2022

“Lying Flat” is the literal translation of the Chinese slang term “Tang Ping,” which alludes to the current youth culture of giving up and living a life without ambition. The term was coined against the backdrop of a worldwide economic downturn and reflects the mental confusion and disillusionment of young people. Multiple variables, including excessive social competition, unsuitable school education, and permissive parents, contribute to adolescents’ inactive life attitudes. This article presented some typical lying-flat cohorts, explored the underlying causes, and provided solutions for this problem in an effort to provide suggestions for encouraging the younger generation to regain hope in life and attain self-actualization.
A Meta-Analytic Reliability Generalization Study of the Computational Thinking Scale
Authors: Kiyici Gülbin , Kahraman Nurcan
Published: December 2022

This study aims to analyze the reliability generalization of the computational thinking scale. There are five dimensions of computational thinking: creativity, algorithmic thinking, coopera-tivity, critical thinking, and problem-solving. A Bonett transformation was used to standardize the reliability coefficient of Cronbach’s alpha. A random-effects meta-analysis was conducted since the heterogeneity among the studies was high. Results supported the RG of the computational thinking scale and its sub-dimensions, which were calculated as 0.843 for general, 0.799 for creativity, 0.848 for algorithmic thinking, 0.863 for cooperativity, 0.799 for critical thinking, and 0.817 for problem-solving. Besides that, the moderator analysis was conducted for the sample type, test length, country, and language of the study. According to the findings, there were no significant moderator effects on the reliability estimation.
Restorative practices and their potential to foster resilient masculinities from patriarchal culture: a scoping review
Authors: De Mezerville Lopez Claire Marie
Published: December 2022

This paper explores how strength-based approaches and restorative practices can foster resilience from patriarchal masculinities in Latin American adolescent boys. Gender violence from the perspective of critical theory will be described. The need for community engagement and critical pedagogy approaches are explored in the context of Latin America. A case study will be developed and analyzed about a specific experience with an allboys Costa Rican high school where efforts for a restorative initiative were unsuccessful. Implications for practitioners are developed through the description of intervention models from both resilience focused approaches and restorative practices.
Study of the determination of the effective dosesof two Cannabis sativa molecules in pathological processes of canines in Bogota
Authors: Ramos Fonseca Geraldine Paola , Vega Camacho Lizeth Daniela , Moscoso Gama Johanna Marcela
Published: December 2022

Studies with Cannabidiol (CBD) to reduce pain in animals have increased exponentially in recent years due to the great interest generated by the use of natural and homeopathic medicine to manage different pathologies. However, for dogs handling, the information is still limited. We’ve found that veterinary ethnobotanical studies carried out in Mexico City at the Faculty of Veterinary Medicine of the UNAM on the analgesic effect of CBD in animals are few and these studies are mostly carried out for use in larger animals (goats, bovines...) On the homeopathic medicine side, there is Dr. Monica Fehlmann from Switzerland, who has a homeopathy program for animals, reiki treatments, healing massages, bioresonance or acupuncture for the physical and spiritual health of pets, while the university corporation of Santa Rosa de Cabal (located in Risaralda, Colombia), ventured to carry out experimental studies with 16 dogs, using (tetrahydrocannabinol) THC as part of their treatments, she based her research on current studies that support the analgesic and antiepileptic effects of THC in critical canine conditions. Various pathologies have been studied to reduce pain, however, the ones with more supporting background are osteoarthritis, inflammation, epilepsy, seizures, behavioral problems, anxiety, neurodegenerative diseases and dermatological problems. Seizures are the most studied application of CBD in people, and it's starting to be the most studied one in dogs. Multiple investigations have shown that CBD is capable of reducing the intensity and frequency of seizures in dogs that were diagnosed with idiopathic epilepsy
Study of the beekeeping flora of the department of Fray Mamerto Esquiu, Province of Catamarca, Argentina
Authors: MJ Felicetti , MG Di Barbaro , Morales SR Batallán , Acosta ER Espeche , NH Varela , DJ Odales
Published: December 2022

Each region has its own floristic characteristics relative to its geographical position. The specificity of the vegetation and the particularities of each flora require knowledge of the beekeeping flora to determine the forage supply for bees. Where, beekeeping production in the Fray Mamerto Esquiú department (Catamarca, Argentina) is based on the diversity of plant species of the place, composed of the native beekeeping flora, the natural forest and different types of crops (forage, fruit trees, vegetables and ornamentals). The flora is the only resource that bees have to produce honey and other bee products (wax, mead, propolis, etc.), where the botanical resource gives these products particular physicochemical and organoleptic characteristics. The objective of this work is to determine the beekeeping flora present in the Fray Mamerto Equiu department. Expeditions were made during all four seasons. 58 species with beekeeping aptitude were inventoried and identified, represented by 20 botanical families, the most abundant being Asteraceae, Lamiaceae, Rutaceae, Fabaceae and Rosaceae. A higher percentage of herbaceous plants was observed, mainly due to exotic forage agricultural herbs implanted and domesticated, being able to observe a flowering period that extended throughout the months of March, April, May, June, July, August and September, with a maximum between mid-July to September onwards. The biodiversity of beekeeping flora present in the Department of Fray Mamerto Esquiú establishes a sustained pollen offer throughout the year, and obtaining honey and other beekeeping products with differentiated characteristics according to their botanical origins would add a plus for their commercialization
Why we need precision agriculture?
Authors: Fouad Abobatta Waleed
Published: December 2022

Due to continuous food demand worldwide from the available natural resources, looking for different agricultural practice is very important to produce adequate food quantity to feeding humanity. Precision agriculture aims to adapt, modify, and promote agricultural practices to sustain production, and provide solutions to various problems that face farmers, by enhancing farmers’ awareness to deal with climate change, protect the environment, and increase profitability. Adoption of precision agriculture assists in producing enough food to feed humanity, fighting hunger, and providing other daily requirements, which represents the most prominent challenge for humanity.
Prevalence of tinea capitis among school age children in eastern Sudan
Authors: Ibrahim Ahmed Mohammed Ahmed , Aziz Ahmed Areeg Salih Abdel , Abdelrahma Nahla Ahmed Mohammed , Abdelrahman Adam Nassreldeen Khalid , Abdel-aziz Dalal Salih , Mohammeddeen Ahmed Ahani Bashir
Published: December 2022

Background: Tinea capitis is a widespread fungal disease affecting the scalp, hair follicles, and skin underlying them. Ring worm infection is most common in children, particularly in late childhood and adolescence, as well as in immunocompromised individuals. There are no reports on the prevalence of Tinea capitis in children in Port Sudan. Objective: The aim of this study is to explore out how prevalent Tinea capitis is in school-aged children, to identify associated risk factors, to help raise public awareness about the importance of hygiene and treatment, and to mitigate infection spread. Methods: This study included a retrospective descriptive review of dermatology clinic patient reports from May 2016 to March 2018, as well as a direct interview with primary school students in Port Sudan, Red Sea State. To recognize the most susceptible age groups, genders, risk factors, and clinical manifestations. Data was collected based on clinical diagnosis by dermatologists, and children were interviewed based on laboratory diagnosis by authors using KOH of unstained scraping preparations after overnight incubation, and Tinea capitis was confirmed microscopically. Data from documents and questionnaires were manually interred and analyzed, and frequencies were measured and displayed in tables. Results: An overall prevalence of Tinea capitis was (17%) 235/1350 among the entire study population. The study showed that the disease is more in male than female with male: female ratio (4:1), and the most vulnerable age group was (4–8 years), 116/235 (49.4%), the incidence was increased by crowding [46/50,92%] the most affected neighborhoods was El Qadisiyah[62/235 (26.4%)].The commonest clinical feature was the weakness of the hair[40/50,80%]. Conclusion: There has never been a report on Tinea capitis in Port Sudan, and there are no screening services to assess the incidence. According to the findings of present study, Tinea capitis was common (17%) among children attending government-owned state primary schools in Portsudan-Red Sea State. Male gender and residing in Sudan's Red Sea climatic region were reported to be independent risk factors.
Development of micellar liquid and thin-layer chromatography.
Authors:   State Enterprise “Ukrainian Scientific Pharmacopoeial Center for Quality of Medicines”, Kulikov Artem
Published: December 2022

The review of the development of micellar high-performance liquid chromatography and micellar thin-layer chromatography is presented. The results of the research of the theoretical foundation and the organized solution usage as mobile phases for the analysis of plant and animal biological active substances, medicinal substances and drugs are demonstrated. The investigations had been carried out on the Chemical Metrology Department V.N. Karazin Kharkiv National University and in the State Enterprise “Ukrainian Scientific Pharmacopoeial Center for Quality of Medicines”.
Historical essay of the development of chromatography at the Zaporizhzhia State Medical University.
Authors:   Zaporizhzhia State Medical University, Varynskyi B.
Published: December 2022

The purpose of this work is to analyze the chronology and state of development of chromatographic methods at the Zaporizhzhia State Medical University (ZSMU). A historical overview of the use of chromatographic methods at ZSMU is provided. First of all, emphasis is placed on the introduction of high-performance liquid chromatography and gas-liquid chromatography. The main scientific laboratories and groups that worked and are working at the Zaporizhzhia State Medical University in the field of instrumental chromatography are shown. There were groups at the Department of Biological Chemistry, the Department of Faculty Pediatrics, the Department of Physical and Colloidal Chemistry. Currently, the Department of Physical Colloid Chemistry is actively working on a new laboratory of liquid chromato-mass spectrometry of the Department of Experimental Pharmaceutical Research of the training medical-laboratory center. The laboratory performs research for many departments of ZSMU, including the Faculty of Pharmacy, the Faculty of Postgraduate Education, the Faculty of Medicine. The laboratory develops, validates and uses methods to establish the purity and confirm the molecular weight and structure of new biologically active substances synthesized to search for new drugs, research of impurities in drug substances, determination of biologically active substances in extracts of medicinal plant raw materials, determination of residual amounts drugs in poultry meat and eggs, and other livestock and poultry products, determination of concentrations of disease markers, determination of distribution, metabolism and excretion of drugs.
Biosynthesis and Cytotoxic Activity of In Vitro Expressed Scygonadin Protein
Authors: Rosli Nurfarhana , Zainathan Sandra Catherine , Addis Siti Nor Khadijah
Published: December 2022

Antimicrobial peptides (AMP) are key components of an innate immune response which represent immediate action of the defence mechanism of an organism.  It is considered a novel therapeutic agent due to its abundance in nature and a broad range of defence activity against microbial. Preceding research has shown that scygonadin AMPs isolated from seminal plasma of mud crab had the potential as a novel antimicrobial agent. However, its cytotoxicity properties on cultured cells have never been experimentally addressed. In this study, the scygonadin protein was expressed in vitro, followed by cytotoxicity assessment via MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. A full-length sequence of the scygonadin gene of 387 bp was cloned into pBAD/Myc-His A vector and expressed in TOP10 cells. The protein expression was induced, purified and quantified before being subjected to cytotoxicity analysis. Next, an African green monkey kidney (Vero) cell was chosen to evaluate the cytotoxicity level of scygonadin in vitro. A total of 1x104 cells/mL were seeded into a 96-well plate before being treated to various concentrations of scygonadin protein and hydrogen peroxide as a positive control for the toxicity test.  The cells’ viability treated with scygonadin AMP and hydrogen peroxide was also verified with fluorescent analysis. The result demonstrated that the scygonadin did not cause any cytotoxicity effects while hydrogen peroxide showed an IC50 value at 0.003mM and this was further confirmed by fluorescent staining analysis. The absence of scygonadin toxicity in cells indicates its potential for biopharmaceutical use.
The contributions of Professor Nguyen Van Dao in the Field of Nonlinear Oscillations
Authors: Khang Nguyen Van
Published: December 2022

Nguyen Van Dao is a leading expert in the field of mechanics in Vietnam. In this paper, we present some contributions of Nguyen Van Dao to the theory of nonlinear oscillation. His outstanding studies are the interaction between self-excited, forced and parametric vibrations, and equally important there is the effect of dynamic absorbers in nonlinear systems.
Vibration of electrically actuated MEMS Timoshenko microbeams based on a hierarchical beam element
Authors: Le Cong Ich , Nguyen Dinh Kien
Published: December 2022

In this paper, vibration of Timoshenko microbeams with an axial force in micro-electromechanical systems (MEMS) is studied for the first time by using a nonlinear finite element procedure. Based on the von Kármán geometric nonlinearity and the modified couple stress theory (MCST), a beam element is formulated by employing hierarchical functions to interpolate the displacement field. Using the derived element, the discretized equation of motion for the microbeam is constructed and then solved by the Newton-Raphson iterative procedure in conjunction with the Newmark method. The natural frequencies, pull-in voltages and dynamic deflections are computed for a clamped-clamped microbeam under electrostatic actuation of a given direct current (DC) voltage. The numerical result reveals that the axial force and the microsize effect have a significant influence on the vibration, and the fundamental frequency of the microbeams is underestimated by ignoring the size effect. The effects of the axial force, the applied voltage and the material length scale parameter on the vibration of the beam are studied in detail and highlighted.
Effect of temperature on sound transmission loss of laminated composite plate
Authors: Thanh Pham Ngoc , Thinh Tran Ich , Hien Ta Thi
Published: December 2022

In this investigation, by an analytical approach, the influence of several key parameters, especially the temperature on the sound isolation capacity of the symmetrically finite orthotropic laminated composite plate is studied. The plate is modeled with classic thin-plate theory and is assumed to be simply supported on all four sides. The incident acoustic pressure is modeled as a harmonic plane wave impinging on the plate at an arbitrary angle. The sound transmission loss is calculated from the ratio of incident to transmitted acoustic powers
FEM shakedown analysis of structures under random strength with chance constrained programming
Authors: Tran Ngoc Trinh , Trinh Tu Luc , Ngoc Tien Dao , Van Tan Giap , Manh Khuyen Truong , Dinh Thuy Ha , Staat Manfred
Published: December 2022

Direct methods, comprising limit and shakedown analysis, are a branch of computational mechanics. They play a significant role in mechanical and civil engineering design. The concept of direct methods aims to determine the ultimate load carrying capacity of structures beyond the elastic range. In practical problems, the direct methods lead to nonlinear convex optimization problems with a large number of variables and constraints. If strength and loading are random quantities, the shakedown analysis can be formulated as stochastic programming problem. In this paper, a method called chance constrained programming is presented, which is an effective method of stochastic programming to solve shakedown analysis problems under random conditions of strength. In this study, the loading is deterministic, and the strength is a normally or lognormally distributed variable.
Vibrations of cracked functionally graded beams: General solution and application – A review
Authors: Khiem Nguyen Tien
Published: December 2022

This paper presents a unified approach to vibration analysis of functionally graded beams with transverse open-edge cracks based on the so-called vibration shape obtained as a general solution of vibration equations in the frequency domain. The crack is modeled by a pair of translational and rotational springs of stiffness computed from the crack depth in dependence upon functionally graded material parameters. The frequency-dependent vibration shape functions allow one not only to obtain the closed-form solution of both free and forced vibrations for multiple cracked FGM beams but also to develop the well-known methods such as Transfer Matrix Method or Dynamic Stiffness Method for analysis of FGM framed structures. The proposed theoretical developments have been illustrated by their application for modal analysis and frequency response analysis of multi-span and multistep beams.
A generalized integral problem for a system of hyperbolic equations and its applications
Authors: ASSANOVA Anar
Published: December 2022

A nonlocal boundary value problem for a system of hyperbolic equations of second order with generalized integral condition is considered. By method of introduction of functional parameters the investigated problem is transformed to the inverse problem for the system of hyperbolic equations with unknown parameters and additional functional relations. Algorithms of finding solution to the inverse problem for the system of hyperbolic equations are constructed, and their convergence is proved. The conditions for existence of unique solution to the inverse problem for the system of hyperbolic equations are obtained in the terms of initial data. The coefficient conditions for unique solvability of nonlocal boundary value problem for the system of hyperbolic equations with generalized integral condition are established. The results are illustrated by numerical examples.
Optimal order uniform convergence of weak Galerkin finite element method on Bakhvalov-type meshes for singularly perturbed convection dominated problems
Authors: TOPRAKSEVEN Şuayip
Published: December 2022

In this paper, we propose a weak Galerkin finite element method (WG-FEM) for solving two-point boundary value problems of convection-dominated type on a Bakhvalov-type mesh. A special interpolation operator which has a simple representation and can be easily extended to higher dimensions is introduced for convection-dominated problems. A robust optimal order of uniform convergence has been proved in the energy norm with this special interpolation using piecewise polynomials of degree $k\geq 1$ on interior of the elements and piecewise constant on the boundary of each element. The proposed finite element scheme is {parameter-free formulation} and since the interior degrees of freedom can be eliminated efficiently from the resulting discrete system, the number of unknowns of the proposed method is comparable with the standard finite element methods. An optimal order of uniform convergence is derived on Bakhvalov-type mesh. Finally, numerical experiments are given to support the theoretical findings and to show the efficiency of the proposed method.
Generalized Fubini transform with two variables
Authors: SEBAOUİ Madjid , LAİSSAOUİ Diffalah , GUETTAI Ghania , RAHMANİ Mourad
Published: December 2022

In the present paper, we define the generalized Kwang-Wu Chen matrix. Basic properties of this generalization, such as explicit formulas and generating functions are presented. Moreover, we focus on a new class of generalized Fubini polynomials. Then we discuss their relationship with other polynomials such as Fubini, Bell, Eulerian and Frobenius-Euler polynomials. We have also investigated some basic properties related to the degenerate generalized Fubini polynomials.
On the low Lagrangian formulation of Vlasov-Poisson equations
Authors: ÇOKSAK ER Derya
Published: December 2022

In this work, two problems related with the Low Lagrangian formulation of the Vlasov-Poisson equations are solved. The first problem is related to the space on which the Low Lagrangian is defined. It is shown that the Low Lagrangian is defined on the tangent bundle of the densities of configuration space. The second problem is related to the assumptions which are called Low constraints. It is shown that Low constraints amount to the fact that the Low Lagrangian is invariant under a group action.
Wave solutions of the time-space fractional complex Ginzburg-Landau equation with Kerr law nonlinearity
Authors: CAİ Niping , ZHOU Yuqian , LİU Qian
Published: December 2022

In this paper, the bifurcation theory of dynamical system is applied to investigate the time-space fractional complex Ginzburg-Landau equation with Kerr law nonlinearity. We mainly consider the case of $\alpha\neq 2\beta$ which is not discussed in previous work. By overcoming some difficulties aroused by the singular traveling wave system, such as bifurcation analysis of nonanalytic vector field, tracking orbits near the full degenerate equilibrium and calculation of complicated elliptic integrals, we give a total of 20 explicit exact traveling wave solutions of the time-space fractional complex Ginzburg-Landau equation and classify them into 11 categories. Some new traveling wave solutions of this equation are obtained including the compactons and the bounded solutions corresponding to some bounded manifolds.
Bimodules and matched pairs of noncommutative BiHom-(pre)-Poisson algebras
Authors: LARAİEDH Ismail
Published: December 2022

The purpose of this paper is to introduce the notion of noncommutative BiHom-pre-Poisson algebra. Also, we establish the bimodules and matched pairs of noncommutative BiHom-(pre)-Poisson algebras. Their related relevant properties are also given. Finally, we exploit the notion of $\mathcal{O}$-operator to illustrate the relations existing between noncommutative BiHom-Poisson and noncommutative BiHom pre-Poisson algebras.
Bronchial asthma
Authors: Editorial Article
Published: December 2022

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Banka Bilgi Sisteminin, Yönetim Kararları Üzerine Etkisi: Batman İli Örneği
Authors: ELİTOK Yavuz , ELİTOK Uyum , GÜDELCİ Erkin Nevzat
Published: December 2022

Günümüzde işletmelerin hedeflerine ulaşabilmeleri, kaynaklarını etkin ve verimli bir şekilde kullanabilmeleri ve bu sayede rekabet üstünlüğü kazanabilmeleri için doğru ve zamanlı bilgiye ihtiyaç duymaktadır. Günümüzde bilgisayar tabanlı bilgi sistemleri farklı kaynaklardan elde ettikleri verileri zamanlı ve istenilen şekilde sunmaktadır. Bu sayede yöneticilerin doğru kararlar alması mümkün olabilmektedir. Muhasebe bilgi sistemi; finansal muhasebe bilgi sistemi ve yönetim muhasebe bilgi sisteminden oluşmaktadır. Bu çalışmada esas itibariyle dört boyuttan oluşan yönetim muhasebesi bilgi sisteminin ve ilişkili olan diğer değişkenlerin (bütçeye katılım, yetki devri) birbirleriyle ve yönetici performansı ile olan ilişkileri belirlenmeye çalışılmaktadır. Bütçeye katılım tüm kesimler için etkin bir bilgi akışını gerektirmekte, böylece daha iyi kararların alınmasını sağladığı düşünülmektedir. Dolayısıyla bütçeye katılımın yönetim muhasebesi bilgi sistemine ve yönetim performansına etkisi bu çalışmada belirlenmek istenmiştir. Ayrıca yetki devri sayesinde otorite ve sorumluluklar çalışanlar ile paylaşılmakta ve kararlar olayın kaynağında alınmaktadır. Böylece yönetici performansının arttığı düşünülmektedir. Otoritenin ve sorumlulukların tabana yayılması, ancak uygun bilgi akışı ile birleştiğinde yönetim performansının artacağı düşünülmektedir. Dolayısıyla yetki devri ile yönetim bilgi sistemi ve yönetici performansı arasındaki ilişkide bu çalışmada belirlenmek istenmiştir. Bilgi sistemi gelişmiş olduğu düşünülen bankacılık sektöründe; Batman ili banka şubelerinde çalışmakta bulunan orta seviyedeki yöneticiler bu çalışmanın ana kütlesini oluşturmaktadır. Bu kapsamda Batman ilinde faaliyet gösteren banka müdür, müdür yardımcısı ve şeflerine anket formları dağıtılmış ve 41 adet geri dönüş sağlanmıştır. Çalışma verilerini analizi, az veri ile çalışma imkânı sağlayan ve normal dağılım ön koşulu gerektirmeyen Smart PLS programı vasıtasıyla gerçekleştirilmiş ve yol analizi kullanılmıştır. Yapılan analiz sonucunda bütçeye katılımın, yönetim muhasebesi bilgi sistemini pozitif yönde etkilediği, aynı şekilde, yönetim muhasebesi bilgi sisteminin yönetsel performans üzerinde pozitif yönde bir etkisi olduğu tespit edilmiştir. Ancak yetki devrinin yönetim muhasebe bilgi sistemi üzerine bir etkisi bulunamamıştır. Benzer şekilde bütçeye katılım ve yetki devrinin yönetimsel performans üzerinde herhangi bir etkisi tespit edilememiştir.
Automated Dynamic Algorithm Configuration
Authors: Adriaensen Steven , Biedenkapp André , Shala Gresa , Awad Noor , Eimer Theresa , Lindauer Marius , Hutter Frank
Published: December 2022

The performance of an algorithm often critically depends on its parameter configuration. While a variety of automated algorithm configuration methods have been proposed to relieve users from the tedious and error-prone task of manually tuning parameters, there is still a lot of untapped potential as the learned configuration is static, i.e., parameter settings remain fixed throughout the run. However, it has been shown that some algorithm parameters are best adjusted dynamically during execution. Thus far, this is most commonly achieved through hand-crafted heuristics. A promising recent alternative is to automatically learn such dynamic parameter adaptation policies from data. In this article, we give the first comprehensive account of this new field of automated dynamic algorithm configuration (DAC), present a series of recent advances, and provide a solid foundation for future research in this field. Specifically, we (i) situate DAC in the broader historical context of AI research; (ii) formalize DAC as a computational problem; (iii) identify the methods used in prior art to tackle this problem; and (iv) conduct empirical case studies for using DAC in evolutionary optimization, AI planning, and machine learning.
Urban gardens: contribution of small green spaces to sustainable drainage
Authors: Souza Angélica Oliveira de , Feitoza Marilua de Carvalho , Borsatto Ricardo Serra , Coffani-Nunes João Vicente , Nascimento Ana Paula Branco do
Published: December 2022

With climate change increasingly imminent, populations living in urban areas are even more vulnerable to flooding, landslides and other socio-environmental problems caused by poor drainage and excessive soil sealing. Between skyscrapers and the excess of streets and impermeable pavements, urban gardens emerge as an ecological and functional alternative for the improvement of drainage and for the renewal of urban infrastructure. This article aimed to analyze the permeable areas of urban gardens, as well as characterize the infrastructure of these spaces. Six vegetable gardens of distinct neighborhoods of the city of São Paulo were selected for this analysis. These spaces were mapped, visited and measured their permeable and impermeable areas. The results show that these small green spaces analyzed have high permeability rate; most have rainwater capture for irrigation of the beds and two of them preserve their springs. It is concluded, therefore, that the urban gardens studied have the potential to reduce the impact and speed of rainwater, increase the absorption of rainwater by the soil and capture rainwater.
Raspbraille: Conversion to Braille Alphabet with Optical Character Recognition and Voice Recognition Algorithm
Authors: DALIP Filiz , YILDIZ Kazım , ÜLKÜ Eyüp Emre , BÜYÜKTANIR Büşra
Published: December 2022

It is quite difficult for visually impaired individuals to read a physically printed material. It is a necessity to provide information flow and communication between visually impaired individuals and other individuals. For this purpose, an alphabet has been developed for visually impaired individuals. With this alphabet, which is called the Braille alphabet, it is possible for visually impaired individuals to access written culture. There are special letters in the alphabet designed for the visually impaired. With the development of technology, studies in the field of Braille alphabet have increased. Optical character recognition technology can convert the letters on files such as pdf, pictures, photos into understandable data by selecting and separating them. Speech recognition algorithm, computer, tablet, mobile phone, voice recorder devices, etc. It is the process of detecting and recognizing the human voice through a microphone with technological products. Within the scope of the study, a device has been developed for Braille alphabet by using optical character recognition technology and speech recognition algorithm. First, the images of each page of the books that were requested to be translated into Braille alphabet were taken. Then, a transformation was performed using a specific character set with the optical character recognition algorithm. Audiobooks, on the other hand, were first converted into text and then into Braille alphabet using speech recognition algorithm. With these converted characters, a physical hardware device has been developed to display Braille letters that visually impaired individuals can read faster.
Synthesis, Characterization and Thermal Analysis of Novel Methylene Bridged Bis-carbazole Based Bisbenzimidazoles
Authors: SAGLAM Mehmet Fatih
Published: December 2022

The synthesis of novel bis(3-carbazoly1)methane linked bis-benzimidazoles is described. Construction of symmetrical bis-benzimidazoles on the bis-carbazolylmethane scaffold was succeeded by condensation reaction of benzene-1,2-diamine derivatives with bis(9-ethyl-9H-carbazole-3-carbaldehyde). The structural analysis of the targeted compounds 4-7 were confirmed by NMR, FT-IR spectroscopy and mass spectrometry. The thermal stability of final products 4-7 was also studied by thermogravimetric analysis (TGA).
MÜZİK ÖĞRETMENİ YETİŞTİREN KURUMLARDA BAŞLANGIÇ ve ORTA DÜZEY PİYANO EĞİTİMİ ÇERÇEVESİNDE “MUZIO CLEMENTI OP.36 NO.1” SONATİNİN TEKNİK ANALİZİ
Authors: SÖNMEZÖZ Feyza
Published: December 2022

Bu araştırmada Muzio Clementi’ye ait Op.36 1 numaralı Do Majör sonatinin tüm bölümlerinin, başlangıç ve orta düzey piyano eğitiminde kazandırılmak istenen teknik konular açısından incelenmesi amaçlanmıştır. Araştırmada betimsel yöntem kullanılmıştır. Söz konusu sonatin ile ilgili ulaşılabilen yazılı belgeler incelenmiş, Op.36 Do Majör sonatine ait farklı yayın evlerinden basılmış olan notalar elde edilmiştir. Araştırma kapsamında incelenen notalar arasından Louis Koehler’in editörlüğünde Peters Edition tarafından özel koleksiyon olarak basılan sonatin albümünde yer alan örnek incelenmiştir. Söz konusu sonatinin üç bölümü de incelendiğinde legato, staccato, non legato, oktav aralık çalışması, parmak bağımsızlığı, gam, arpej, çift ses çalma, tril ve akor şeklinde teknik konuların yer aldığı görülmüştür. Bu açılardan Muzio Clementi’ye ait Op.36 sonatinlerden 1 numaralı Do Majör sonatinin tüm bölümlerinin piyano başlangıç ve orta düzey için teknik açıdan geliştirici bir eser olduğu sonuçlarına ulaşılmıştır.
PSİKOLOJİK SÖZLEŞMENİN BİLGİ PAYLAŞIMINA ETKİSİ ÜZERİNE BİR ARAŞTIRMA
Authors: ÖZBEZEK B. Dilek
Published: December 2022

Günümüzün dinamik iş dünyasında, bilgi bir örgütün sürdürülebilir rekabet avantajına katkıda bulunan en önemli örgütsel kaynaktır. Bununla birlikte, bilgi sadece çalışanlar paylaşmaya istekli olduğu sürece örgüt tarafından kullanılabilir. Bilgi paylaşımı, en az iki taraf arasındaki sürekli ve karmaşık etkileşim sürecidir. Bu çalışanlar ve işverenler veya örgütler arasındaki istihdam ilişkisinin şart ve koşulları belirleyen karşılıklı yükümlülüklerle dolu bir psikolojik sözleşmeye dayalı karşılıklı bir süreç olarak ele alınabilir. Bu araştırmanın amacı, psikolojik sözleşme türlerinin bilgi paylaşımı üzerine etkisini incelemektedir. Önceki çalışmalara dayanarak, psikolojik sözleşme kavramı, ilişkisel ve işlemsel psikolojik sözleşme olmak üzere iki temel boyutta ele alınmıştır. Bilgi paylaşımı ise, tek boyutla incelenmiştir. Bu araştırma için Gaziantep Üniversitesi’nde görev yapan 320 akademik personelden anket yöntemiyle veri toplanmıştır. Elde edilen veriler çoklu regresyon analizi ile değerlendirilmiştir. Bulgular, işlemsel psikolojik sözleşmenin bilgi paylaşımı üzerinde anlamlı ve negatif etkisi olduğunu, ancak ilişkisel psikolojik sözleşmenin bilgi paylaşımı üzerinde anlamlı ve pozitif etkisi olduğunu göstermektedir.