bluuebunny/crossref_metadata_2025 huggingface dataset:
Variational formulation of thermomechanical problems
Authors: Lurie S. A. , Belov P. A. , Volkov A. V.
Published: January 2024

This article proposes that a 4D space-time continuum is used for building variational thermomechanical continuum models. In order to identify physical constants in reversible processes, physically justified hypotheses were formulated. They are the hypotheses of complementary shear stress, classical dependence of momentum on velocity, and heat flow potentiality (generalized Maxwell–Cattaneo law). The Duhamel–Neumann law was assumed to be classical. In the considered model, the generalized Maxwell–Cattaneo and Duhamel–Neumann laws were not introduced phenomenologically. They were derived from the compatibility equations by excluding thermal potential from the constitutive equations for temperature, heat flow, and pressure. Dissipation channels were considered as the simplest non-integrable variational forms, which are linear in the variations of arguments. As a result, a variational principle that generalizes L.I. Sedov’s principle was developed. It is a consequence of the virtual work principle and termed as the difference between the variation of the Lagrangian of reversible thermomechanical processes and the algebraic sum of dissipation channels. It was proved that for the classical thermomechanical processes, with second-order differential equations, there can only exist six dissipation channels. Two of them determine dissipation in an uncoupled system – in the equations of motion and heat balance. The remaining four channels define coupling effects in coupled problems of dissipative thermomechanics.
Routing in circulant graphs based on a virtual coordinate system
Authors: Sukhov A. M. , Romanov A. Y. , Glushak E. V.
Published: January 2024

This article explores routing methods in two-dimensional circulant graphs where each vertex is linked to four neighboring ones. The unique symmetries of the circulant graph make it a viable topology for high-performance computing devices, such as networks-on-chip and cluster supercomputers. It was shown that the coordinates of the vertices can be determined as the minimum number of transitions along the generators from the initial vertex. Two virtual coordinate-based routing methods were developed. The first method entails restoring the vertex numbers and finding the difference between them, with the coordinates of the corresponding vertex setting the route. The second method involves calculating the difference between the final and initial vertex coordinates, while minimizing the route based on the proposed algorithm.
Problems of heat and mass transfer in chemically reacting boundary layers on blunted bodies
Authors: Tushavina O. V. , Egorova M. S.
Published: January 2024

This article considers a nonlinear system of partial differential equations describing the boundary layer. Such a system is commonly solved by numerical methods. Here, the Dorodnitsyn–Lees variables were used to carry out an analysis and derive the formulas for calculating the body temperatures and the heat fluxes to the body generated by the reacting compressible gradient boundary layer.
Modeling the oxidation process of TiAl and Ti3 Al intermetallic compounds due to grain-boundary diffusion of oxygen
Authors: Chepak-Gizbrekht M. V. , Knyazeva A. G.
Published: January 2024

A diffusion-kinetic model was proposed to analyze the oxidation process in a nanostructured material with explicit identification of grain boundaries. It was assumed that oxygen migrates faster along the boundaries than it does in the grain volume. The model takes into account the stages of decomposition and formation of intermetallic compounds, as well as the formation of oxides, both within the boundaries and in the grain volume. The problem was solved numerically, and the oxidation dynamics were compared for various materials with different grain properties.
Clinical outcomes of pediatric extracorporeal life support: Single center experience
Authors: Yazıcı Özkaya Pınar , Metin Hamdi , Zararcı Kazım , Ersayoğlu İrem , Turan Gülizar , Tuncer Osman Nuri , Karapınar Bülent
Published: January 2024

Background/Aim: The use of extracorporeal life support (ECLS) in children has notably increased over the last two decades, the indications for its use are expanding. According to the Extracorporeal Life Support Organization (ELSO) 2016 report, the rate of pediatric extracorporeal membrane oxygenation (ECMO) runs was 24% among all ECMO patients. A relationship between higher ECMO volume and mortality for neonates and adult patients supported with ECLS was reported. Different mortality rates were reported for different diagnostic and age groups for ECMO patients. The objective of this study was to describe our experience with pediatric ECMO.
Methods: A retrospective cohort study was conducted on patients between 1 month and 18 years who underwent ECMO treatment in a pediatric intensive care unit from January 2015 to June 2022. Patients’ characteristics, outcomes, and complications were recorded.
Results: A total of 22 children underwent ECMO during the study period. The median age of the patients was 4.5 years (ranging from 2 months to 18 years). Eight (36.4%) patients required venoarterial (VA) ECMO, and 14 patients (63.6%) required venovenous (VV) ECMO. Among the eight children who underwent VA ECMO, central cannulation was performed in 62.5% of cases. Seven children who required VV ECMO were cannulated with a double lumen catheter (42.8%). Thirteen (59.1%) patients were successfully weaned from ECMO. Weaning rates were 25% and 78.5% for VA and VV ECMO, respectively. Among 22 patients, overall hospital mortality was 72.7%. Mortality rates were 87.5% and 64.2% for VA and VV ECMO. Five patients (22.7%) survived to hospital discharge.
Conclusion: Extracorporeal life support is one of the life-saving treatment modalities. This study found that the children requiring VA ECMO had a higher mortality rate than children requiring VV ECMO, a result that is consistent with the ELSO registry report. In our study, children requiring VV ECMO had a higher weaning rate than the ELSO registry data. However, they had a lower survival to discharge rate than the ELSO registry data. We feel that by describing this case series, the spread of ECMO practice may be supported in Turkey.
Relationship between HER2 and clinicopathological data in gastric adenocarcinomas
Authors: Ceylan Cengiz , Angin Yavuz Selim , Baran Necip Tolga , Kocaaslan Hüseyin , Cengiz Emrah , Güngörür Omer , Güzel Mehmet , Saglam Kutay , Aydin Cemalettin
Published: January 2024

Background/Aim: The impact of human epidermal growth factor receptor 2 (HER2) overexpression on the surveillance of gastric cancer remains uncertain. Typically, HER2 status is assessed in both locally advanced and metastatic diseases, and targeted therapies are applied to cases with HER2-positive status. Our objective was to investigate the correlation between HER2 receptor status, clinicopathological characteristics, and prognosis in gastric cancers across all stages. Based on the results from this investigation, we aim to provide clinicians with insights into the clinicopathological conditions that warrant HER2 investigation.
Methods: In this retrospective study, we conducted a comprehensive analysis of clinicopathological data from a cohort of 169 patients who underwent surgical treatment for gastric cancer between 2014 and 2022. The HER2 status was determined based on results from immunohistochemistry (IHC) and fluorescent in situ hybridization (FISH) techniques applied to gastric cancer pathology samples. Based on the HER2 positivity, the patients were classified into two distinct groups: (1) HER2-positive and (2) HER2-negative. The relationship between the clinicopathological variables, HER2 status, and overall survival (OS) was evaluated using chi-squared and Kaplan–Meier analyses. A statistical significance level of P <0.05 was applied to determine significant associations.
Results: According to the IHC analyses performed in our study population, 33 among 169 patients were HER2-positive (19.53%). Statistically significant factors related to HER2 positivity, such as male gender (P=0.009), pathological stage, N category, lymphovascular invasion status ([LVI] P=0.046), and proximal tumor location (P=0.015) were observed. In addition, OS was 40.49 (6.21) months in HER2-positive gastric cancer patients and 57.43 (3.48) months in HER2-negative gastric cancers (P=0.045).
Conclusion: Irrespective of the pathological stage, gastric cancer exhibited HER2 positivity at a ratio of 5:1. Among the clinicopathological findings, a significant correlation was observed between HER2 expression and gastric cancers characterized by aggressive features. Moreover, HER2 positivity was associated with an unfavorable prognosis in gastric cancer patients.
The Relationship between Organizational Culture, Job Satisfaction, and Commitment of Lecturers at Universities
Authors: Tran Hung Van , Tran Anh Viet , Le Minh Nguyen Binh
Published: January 2024

Purpose: The study aimed to determine the influence of factors on job satisfaction and the relationship between satisfaction, organizational culture, and the organizational commitment of lecturers at universities in Ho Chi Minh City. Design/Methodology/Approach: This was a quantitative study in which the authors compile theories, analyze and synthesize scales for research concepts, and propose research models. The online survey collected 532 answer sheets from professors and lecturers from universities in Ho Chi Minh City, of which 525 were valid and included in SmartPLS 3 to evaluate the validity and reliability of the scale and to analyze the relationship among the concepts in the suggested model. Findings: The results show that several factors significantly impact employee satisfaction in the field of education, such as job promotion, leadership or supervision, working environment, income, and the job itself. In addition, both satisfaction and organizational culture impact organizational commitment. The study's findings have implications for educational institutions, lecturers, policymakers, researchers, and funding agencies. They highlight the importance of factors like leadership development and organizational culture in enhancing job satisfaction and commitment among lecturers, offering valuable insights for improving the educational environment in Ho Chi Minh City and beyond. Originality: The results aligned with previous studies presented in the literature section. However, this study revealed some specific characteristics of lecturers in universities in Ho Chi Minh City, Vietnam, where lecturers focused on personal development but were committed to the organization via job satisfaction and culture. Doi: 10.28991/ESJ-2023-SIED2-021 Full Text: PDF
Integrated Cretaceous stratigraphy of the Cauvery Basin, South India
Authors: Nagendra Raghavendramurthy , Reddy Addula Nallapa , Jaiprakash Bomma Chikkanarayan , Gilbert Harry , Zakharov Yuri D. , Venkateshwarlu Mamilla
Published: January 2024

Cretaceous sequences of the Cauvery Basin, South India, can serve as an analogue to understand the subsurface successions with proven potential for commercial hydrocarbon exploration. In this area, the distribution of hydrocarbon reservoir and source rock facies was profoundly influenced by relative sea level changes amplified by rifting and related tectonic activities. Of particular interest are the sedimentary strata exposed in mines, quarries and outcrops around the Ariyalur area of Tamil Nadu, that mirror subsurface strata. This study reviews and integrates the stratigraphic studies based on this area and published over the past three decades. In particular, we concentrate on lithological features, macrofossils, microfossils, ichnofossils, magnetic polarity and sequence stratigraphy to reveal the geologic history of the Cauvery Basin. Age control, paleoenvironmental interpretations, paleobathymetry, paleoecology and paleotemperature are based on ammonites, belemnites, brachiopods, mollusks, nannofossils, and foraminifera. Key results include an integrated stratigraphic framework, paleobathymetry and sea level history that shows seven second/third-order depositional sequences, and major sea level falls during the late Turonian and late Maastrichtian linked to the Marion and Reunion mantle plumes, respectively.
Reappraisal of Oligocene-Miocene chronostratigraphy and the Mi-1 event: Ocean Drilling Program Site 744, Kerguelen Plateau, southern Indian Ocean
Authors: Fraass Andrew J. , Leckie R. Mark , DeConto Robert M. , McQuaid Chelsea , Burns Stephen , Zachos James C.
Published: January 2024

The Oligocene-Miocene Transition (OMT) is an important interval in Earth's history, with substantial changes in Antarctic ice volume and mean temperature. The OMTis complicated in paleoclimatology, chronostratigraphy, and terminology, and there is a need for additional sites outside of the tropic/subtropics or Atlantic Basin to better understand the cause(s) and consequences of the OMT. Ocean Drilling Program Hole 744A sits on the southern edge of the Kerguelen Plateau, and is thus a sensitive recorder of changes on Antarctica and in the Indian Ocean sector of the Southern Ocean. Previous stratigraphic studies have concluded that the Oligocene/Miocene boundary is contained within a short coring gap (1 m) between Cores 744A-11 and 12. A new benthic foraminiferal stable isotope curve is at odds with the existing age model for the upper ~0.5mof Core 12. A number of different explanations for age models are discussed, and we find there is only one plausible explanation for the chronostratigraphy through Core 12. We suggest therewas a short (~150-200 kyr) hiatus, encompassing the peak Mi-1 excursion, based on interpreted magnetostratigraphy. This hiatus has no obvious lithologic expression.
The Effect of Slip Boundary Conditions on The Newtonian Die-Swell Flow
Authors: Abdul-Jabbar Jinan Raad
Published: January 2024

The effect of the slip boundary condition on the Newtonian die-swell free surface issue is the main objective of this study. The major aspect of this article is the determination of the free surface position using the free surface location methodology under the slip boundary condition. A Taylor Galerkin/pressure-correction (TG/PC) finite element method is used to solve this issue numerically. Furthermore, the system of equations that governs such a problem includes a time-dependent momentum equation and a continuity equation for mass conservation. These equations are shown here in an axisymmetric frame with Newtonian flow. The free-surface location is calculated using the Phan-Thien (dh/dt) approach in conjunction with slip boundary impact. This work focuses on the effect of slip boundary condition on swelling ratio for Newtonian representation. The current findings reveal that the slip boundary condition has a considerable impact on the swelling ratio of the fluid, causing a decrease in the fluid swell. Furthermore, the behaviors of solution components are presented.
First report of Didymella Glomerata (Corda) and Penicillium Polonicum Zaleski on Wheat (Triticum aestivum L.) Seeds in Iraq
Authors: Abd Oun Ameer Ghani
Published: January 2024

In the present study, two fungal species, Didymella glomerata and Penicillium polonicum, were isolated from seeds of four wheat cultivars, named Mahmoodia (MHD), Adena (ADN), Eba 99 (EBA), and Wefia (WAF), and determined by using phenotypic characteristics and molecular sequencing. Molecular diagnosis for both fungi was applied based on internal transcribed spacer primers (ITS1 and ITS4). This is the first record of D. glomerata and P. polonicum as wheat seed-borne fungi in Iraq.
Geometry of Locally Conformal C-12 Manifolds
Authors: Yusuf G.Y.
Published: January 2024

This study deals with the class of locally conformal manifolds in such a way that the characterization identity for the aforementioned class is produced. Furthermore, the first clan of Cartan's structure equations is determined when the components of Kirichenko's tensors on associated G-structures for locally conformal manifolds are determined. The second clan of Cartan's structural equations for locally conformal manifolds was also completed.
Solution of Periodic Hyperbolic Differential Problem with Initial Control Function
Authors: Al Ameer Z.A.
Published: January 2024

This work investigates the problem of a periodic hyperbolic equation formulated in a bounded domain with a convection term and weakly sourced nonlinear functions. The purpose of this work is to analyze the existence of solutions to the control initial problem using ideas of hyperbolic and periodicity of first derivatives and control starting conditions, as well as some properties of some inequalities offered to investigate this topic.
A Hybrid Analytical Approximate Technique for Solving Transient Natural Convection in a Horizontal Concentric Cylinders
Authors: Abdulameer Yasir Ahmed
Published: January 2024

A hybrid procedure combining the homotopy perturbation method and the Fourier transform has been proposed, and it was used to find an approximate analytical solution to the problem of two-dimensional transient natural convection in a horizontal cylindrical concentric annulus bounded by two isothermal surfaces. The effect of varying values of the Grashof number, Prandtl number, and radius ratio on fluid flow (air) and heat transfer is explored. Furthermore, the velocity distributions and the average Nusselt number are investigated, with Nusselt numbers utilized to express local and global heat transfer rates. Finally, the convergence of the new algorithm was theoretically checked by proving several theorems, which were then applied to the findings of the new solutions provided by the suggested approach.
Double Sums of the Szasz Sequence
Authors: Jasim Eman H.
Published: January 2024

This study introduced and investigated a modification of the Szasz sequence in double sums with one variable. This sequence's recurrence relation for the m-th order moment, convergence theorem, and Voronovskaya-type asymptotic theorem in ordinary approximation are investigated. A numerical example is also provided to demonstrate the approximation of the chosen test function by this modification sequence, and the numerical results are compared to the numerical results of the classical Szasz sequence. It turns out that the results achieved from the modification sequence are superior to those obtained from the classical sequence.
Numerical Study of Oblique Shock Wave
Authors: Ali Amir Hussein
Published: January 2024

This study aims to investigate some physical parameters in presence of an oblique shock wave numerically. Computational fluid dynamics has been used to analyze fluid behavior upstream and downstream of the shock wave. To obtain a good resolution, the computational domain is constructed by fine meshing. Due to its wide use in engineering applications, Air has been used as fluid material. A wedge of half-angle q = 22° has been used to intercept the airflow path and founding the oblique shock wave of anglef. For gathering comprehensive information, the air flows have been tested for three Mach numbers, namely slightly higher than 1, slightly higher than two, and slightly higher than three (M1~=1, M2~=2, and M3~=3) and represented as a case (a), (b) and (c) respectively. The continuity equation, momentum equation, and energy equation have been solved numerically. Velocity, turbulent viscosity, total pressure, and total enthalpy have been investigated upstream and downstream of the shockwave for the three different Mach numbers. The results showed that the total pressure downstream of the shock wave was less than that of the upstream shock wave. In addition, the turbulent viscosity area around the object becomes thicker as the Mach numbers become bigger. Also, the total pressure was slightly different for the three different Mach numbers. These behaviors of the above-mentioned parameters are attributed to the shock wave effects. In addition, the oblique shock wave angle f is appeared to be decreased as the Mach number increased.
The Electric Field Effect on the Chemisorption of Cu Atom on Perfect Graphene
Authors: Ahmed Abadhar R.
Published: January 2024

The influence of an external static electric field on the chemisorption of a single Cu atom on perfect graphene (Cu/graphene) is explored and investigated using magnetic moment and electronic structure calculations based on the Anderson model, which is characterized by various model parameters. The Cu atom on top of a carbon atom site configuration is taken into account in our research. The effects of an electric field on Cu chemisorption on graphene were examined. The changes in charge accumulation on the adatom Cu confirm the potential of altering the magnetic characteristics of Cu/graphene via the perpendicular electric field direction. The magnetic moment on Cu/graphene was measured as a function of the electric field. Metallic state is observed for multiple electric field values on a single Cu adatom/graphene with variable electronic structure. It has been discovered that the bonding between Cu atoms and graphene can be tuned using an electric field. The dependence of adatom/graphene electronic and magnetic properties on the density of states indicates the importance of the microscopic details for graphene functionalization towards spintronics applications. Our findings could be quite interesting since they imply that the magnetic moment and spin dependent electronic structure on the Cu atom site can be modified by the electric field action.
Raman Spectroscopy and Structural Characteristics of Copper-Ion-Doped Silica Sol, Gel, and Aerogel
Authors: Anaad Mohammed A.
Published: January 2024

This work presents the synthesis of silica sol, gel, and aerogel. To achieve a hydrophobic silica gel infused with copper chloride, a surface modification was performed on the sample. Furthermore, The present study focused on the examination of the evolutionary patterns of composition profiles in sol, gel, and aerogel materials. This investigation aimed to analyze the spectral properties of fluorescence, absorption, Raman spectroscopy, and FTIR spectrum. Additionally, the surface morphology, topography, and square of the surface roughness were evaluated using advanced imaging techniques such as scanning electron microscopy with a field-emission source (FE-SEM) and Atomic Force Microscope (AFM) images. The results indicate that there are notable distinctions in peak regions and distribution between the fluorescence and absorption spectra. This distinction is particularly evident in the Raman spectrum of sol, gel, and aerogel samples, where variations in peak regions and distribution are observed. Furthermore, the dominance of homogeneity and nano-structure, as well as the presence of surface roughness and increased surface area, are clearly discernible in the AFM topography.
Bacterial Bio-detector for CdCl2 and NiCl2 Heavy Metal Pollutants Based on Their Optical Properties
Authors: Al-Shanawa Maytham Abdala Ali
Published: January 2024

In fundamental neuroscience and cell biology, gadgets for studying living cells have been of great interest. Recent research has expanded cell-based sensors to pharmacological screening, environmental monitoring, and toxicological detection. Among the many measurement methods, optical sensors make bioactivity and cell population analysis easy. This research is part of a larger effort to develop microorganism-based heavy metal (toxin) sensing methods. A correlation was established to examine how heavy metals affect E. Coli and Deinococcus radiodurans bacteria's optical density. CdCl2 and NiCl2 were used for this study. In this study, Escherichia coli (E. coli) and Deinococcus radiodurans (D. radiodurans) were exposed to heavy metal solutions. Dissolving the compounds in de-ionized water generated 0.1, 1, 10, 100, and 1 M CdCl2 and NiCl2. This study used fluorescence microscopy, spectrophotometers, and fluorescence spectroscopy.
Salmon Fish Preservation Using Biosynthesized Chitosan By Aspergillus Niger
Authors: Sideeq Hero Ahmed
Published: January 2024

Chitosan is deacetylated form of chitin that found in the cell walls of Aspergillus. The United States Food and Drug Administration classified chitosan, which has many uses and GRAS. Used in this study three isolates of Aspergillus niger for produce chitosan, and the isolates' capacity to manufacture mycotoxin was determined by using polymerase chain reaction (PCR). The manufactured chitosan could be distinguished from commercial chitosan acquired from Sigma by using infrared FTIR. The antibacterial activity of chitosan was investigated. The disk diffusion method and the Minimum Inhibitory Concentration (MIC) assay was conducted against the following bacteria: Salmonella entrica sub entritica ATCC 14028, Clostridium perfrigens ATCC 13124, Escherichia coli, and Streptococcus pneumonia ATCC 49616.It was discovered that Salmonella entrica sub entritica ATCC 14028 was more sensitive than chitosan. Samples of salmon fish were dipped in a 2% chitosan solution, and the samples' shelf life and microbiological quality were assessed. The findings indicated that while pH and moisture loss were tolerable during refrigerated storage, the number of psychrophilic cells was decreased, resulting in a near 15-day storage life.
Recycling of Chitosan-Source Waste to Remove Heavy Meta Ions from Polluted Water
Authors: Al-Mosawi Hussein A.
Published: January 2024

Ion exchange resins, which are essential for water purification, have seen a major increase in use over the past 20 years due to industrial expansion. They are used to remove heavy metals, which are one of the most widespread pollutants, considering that these notoriously toxic metals can end up in ecosystems via several pathways. The chemical structure of chitosan extracted from the shrimp shell was confirmed by Fourier transform infrared (FTIR) and Proton nuclear magnetic resonance (1H-NMR) characterization. It was used as an ion exchange material for the removal of heavy metal ions Fe(III), Cd(II), and Pb(II) from their aqueous solutions in polluted water treatment, and the samples were tested by flame atomic absorption. The analytical study started by exploring the influence of pH (2, 4, 6, and 8) on the removal process by chitosan resin in a batch system. The obtained results revealed that as the pH of the analyzed ion solution increased, the removal efficiency for ions also increased. The highest removal efficiencies were obtained at pH 8 for the investigated Pb(II) and Fe(III) ions, ranging from 94.62 to 96.0, respectively, and 99.98% for Cd(II) ions at pH 6.
A bibliographic connection on creativity, innovation, bioinspiration, and surface design
Authors:   UFPB, Silva Marivaldo Wagner Sousa , Arruda Amilton José Vieira ,   UFPE, Silva Thiago Ferreira da ,   UFPB
Published: January 2024

Currently, the use of a variety of methods for teaching design and for design has become increasingly widespread, with more and more methods and variations of methods for teaching design and for designing products and services on the market. The union of methods is also widely used as a basis for ideating design concepts, thus adding more access to innovation and emotion to objects. The aim of this review is to survey and at the same time connect Creativity, Innovation, Bioinspiration and Surface Design. This review is the first phase of an extensive post-doctoral research project on bioinspiration and the creative phase of product development
Studies on new approaches for sound wave generated energy
Authors:   PUC - Rio, Rebello Antonio Cabral
Published: January 2024

This article aims to consolidate information pertinent to the possibilities of generating energy from sound waves, using materials derived from research for a future academic dissertation by the same author. The combination of this data from a speculative design perspective allows us to develop conceptual principles for products and services that promote the use of an abundant and clean energy source, which still presents unique challenges to be integrated into a significant capacity. Sound production, in general, is found in natural environments and also manufactured objects, presenting the possibility of obtaining this energy through means not even imagined until then. As inspiration, the human auditory system and some of its functions are discussed here, such as the conversion of mechanical signals to electrical ones, helping in an elaborate understanding of listening and providing creative opportunities for formulating solutions in terms of energy generation. Also investigating the phenomenon of piezoelectricity, Wireless Sensor Networks, and the production of electrical charge through synthetic materials, opens up space for new ways of manipulating biological properties. The conclusions presented here are approaches, in this context, to the conditions for implementing frequencies and sound waves as energy sources.
Omnidirectional Curve and the principle of tensegrity
Authors:   UnB, Alves Christine Ribeiro da Rocha , Ferreira Filho Anésio de Leles ,   UnB
Published: January 2024

In this work, we report part of an investigation about the design of nature, whose the complete content is part of the Omnidirectional Curve project. In this project, we seek to identify guiding principles of natural design, through a methodology initiated by the observation of natural structures followed by theoretical foundations of a multidisciplinary nature and experiments aimed at proving structural qualities related to the principle studied. Tensegrity is one of these principles, which we will discuss in more detail in this article. It refers to the balance of opposing forces that act within any natural system and/or structure, being responsible for giving both the works of nature and human constructions the following attributes: resistance, economy and lightness. Such qualities were verified in our experiments, proving how useful such a bio-inspired approach can be for the ideal of sustainable design.
Bionics and Biomimetics: physical models of natural systems
Authors:   UFSC, Pazmino Ana Veronica , Zaparoli Moisés ,   UFSC, Kumagai Deborah Naomi ,   UFSC
Published: January 2024

The article presents the development of four models of natural systems made through digital materialization to serve as physical material for the application of Bionics and Biomimetics in product development. This is theoretical-practical research on the structures of natural systems and the development of the construction of physical models through digital printing. Application of the biological process called overlapping or overlaying, the term refers to the logic of overlapping "layers" as happens in animals such as the armadillo. The models of the bands of the armadillo, the honeycomb, the snowflake and Furnarius rufus nest will serve to be applied in project disciplines in the Product Design course as an opportunity to visualize and understand the relationship between shape and function present in natural systems. The material was produced at the FabLab Pronto 3D at the Federal University of Santa Catarina.
Graphic Composition on Glass: technique and conceptual model in bioinspired design
Authors:   UFPE, Ferreira Hilma , Moreira Fernanda ,   UFPE, Arruda Amilton José Vieira de ,   UFPE
Published: January 2024

Biotechnology studies produce diverse solutions in models inspired by plant cells to improve the subsystem constituted by the interface between the internal and external environment of a building. Adequate supply focused on the ecosystem is responsible for filtering stable comfort conditions to the outside world of buildings, allowing for the creation of sustainable envelopes and a multitude of other artistic resources. Thus, this article addresses the relationship between technique and conceptual model regarding the use of surface design strategies for the process of graphic composition on glass façades. To this end, it will take into account natural resources; concepts and typologies of glazed buildings and elements of surface design. The methodological process is characterized as qualitative, descriptive and of a systematic theoretical nature in recent literature.
Biomimetics applied to the proposal of a park-library
Authors:   UFPE, Falavigna Larissa , Mendes Letícia ,   UFPE
Published: January 2024

Nature is a source of endless and unique forms, from which we can gather inspiration for projects, be those related to architecture, product design, engineering, or others. Starting from this concept, this article intends to explore the theme, an exploration born from an academic project, which relates not only architecture and biomimetics, but also methodology and social spaces. In this paper we try to understand the role of libraries in society, in which ways this building can be connected to nature, looking at the site where the proposal is located, and how biomimicry can be a strategy that generates the adopted form. The methodology presented here intends to understand the site in na innovative way, through the spacial sensation and how it is transcribed into a projectual form, as well as the exploration of local nature as a source of inspiration.
Rancang Bangun Sistem Informasi Inventory Barang Berbasis Web (Studi Kasus Toko Dina Beauty Care)
Authors: Rura Octavianus Sabi , Ardiansyah Riki
Published: January 2024

Penelitian ini menyajikan desain dan pengembangan aplikasi manajemen inventaris berbasis web untuk toko Dina Beauty Care menggunakan metode Waterfall. Latar belakang dari penelitian ini menekankan bernilainya sistem manajemen inventaris yang efisien dalam menambah efisiensi operasional, mengurangi anggaran, serta menaikkan kepuasan pelanggan dalam bisnis ritel. Metode studi yang digunakan dalam penelitian ini mengikuti pendekatan pengembangan perangkat lunak Waterfall.  Ini terdiri dari tahapan sekuensial, termasuk pengumpulan kebutuhan, desain sistem, implementasi, pengujian, dan pemeliharaan. Penelitian ini menekankan pentingnya perencanaan dan dokumentasi yang teliti pada setiap tahap proses pengembangan. Hasil dari penelitian ini memperlihatkan implementasi yang sukses dari aplikasi manajemen inventaris berbasis web untuk toko Dina Beauty Care. Aplikasi ini menawarkan fitur seperti pelacakan produk, manajemen stok, dan kemampuan pelaporan. Aplikasi manajemen inventaris berbasis web yang dikembangkan memberikan solusi efektif bagi toko Dina Beauty Care untuk menyederhanakan proses manajemen inventaris mereka. Aplikasi ini meningkatkan akurasi inventaris, mengurangi kesalahan manual, meminimalkan kehabisan stok, dan memungkinkan pengambilan keputusan yang lebih baik melalui laporan yang komprehensif. Hal ini akhirnya menyebabkan peningkatan efisiensi operasional dan peningkatan kepuasan pelanggan.
Implementasi RESTful API Pada Laravel dan Simulator IoT Wokwi Untuk Pengukuran Suhu dan Kelembaban Menggunakan Metode Waterfall
Authors: Ardhana Valian Yoga Pudya , Hidayat Muhammad Taufiq , Jannah Miftahul , Sumiati Sumiati , Rini Puspita , Sari Nila
Published: January 2024

This research discusses the implementation of RESTful API in the Laravel web development framework, along with the utilization of the IoT Wokwi simulator for monitoring temperature and humidity. The application of the waterfall development method is employed as an approach to organize the development process with clear steps in creating the temperature and humidity measurement program. The aim of this research is to create an efficient and well-structured application program interface using Laravel, while simultaneously leveraging the IoT Wokwi simulator as a tool for testing and validating the functionality of temperature and humidity measurement. The research methodology involves the use of the software development life cycle (SDLC) model, specifically the waterfall model, as an approach to the software development life cycle. The anticipated outcome of this research is to provide practical guidance for developers in creating an effectively integrated temperature and humidity measurement system using web technology and IoT.
Analysis of Student Learning Difficulties in the Material of Inheritance of Traits
Authors: Mardin Herinda , Abdul Aryati , Sado Anita I.
Published: January 2024

This study aims to describe student learning difficulties in inheritance material in class XII SMA Negeri 1 Tapa. This type of research is descriptive quantitative. Data collection techniques used teacher activity sheets, student activity sheets, learning outcomes tests, questionnaires and interviews. The results of the study found: The results of learning implementation at meetings 1 and 2 with a value of 82, 81%, with a good category, at meetings 3 and 4 with a value of 78, 78 with a sufficient category. The results of student activity at meetings 1 to meeting 4 with a value of 54, 17, 51.17, 51.69, 53.39% with a less category. The results of student responses with aspects of physiology and psychology with a value of 69.58, 60.24% with a sufficient category and aspects of sociology with a value of 55.47% with a very sufficient percentage. The results of the analysis of learning outcomes tests with a value of 96% incomplete. In conclusion, there are many students who experience learning difficulties in terms of physiological, psychological, and sociological aspects.
Development of E-Module Based on Discovery Learning to Improve Students' Learning Outcomes in PKKR Subject for Grade XI TKRO at State Vocational High School 1 Merbau
Authors: Kholistiyawatin Nur , Maksum Hasan , Waskito  , Purwanto Wawan
Published: January 2024

This research aims to develop, measure the validity, assess the practicality, and evaluate the effectiveness of an e-module based on discovery learning to enhance the learning outcomes of 11th-grade students in Electrical Vehicle Maintenance subject. This study falls under the category of Research and Development, involving the development of an e-module for the topic of light vehicle electrical maintenance that is valid, practical, and effective using the discovery learning approach. The development of this e-module based on discovery learning follows the 4-D model, which includes defining, designing, developing, and disseminating stages. The validation results of the developed e-module based on discovery learning fall under the category of valid. The practicality assessment of the discovery learning-based module is classified as very good, and the effectiveness of the e-module based on discovery learning as a learning media indicates that this learning media is considered effective.
Identification of Tadris Biology Students Level Understanding and Misconceptions on the Material of Quantities and Units Using 3-Tier Diagnostic Method
Authors: Meiliyadi Lalu Ahmad Didik , Asyari Akhmad , Arizona Kurniawan
Published: January 2024

The level of understanding and misconceptions of Tadris Biology students at Mataram State Islamic University has been analyzed. The tested sub-materials, including quantities, units, and measurements, are adjusted to the Student Semester Learning Plan in the Basic Physics Course. The method used was observation using the 3-tier Diagnostic Test. The 3-tier Diagnostic Test is a question consisting of multiple choice questions accompanied by statements of reasoning and confidence levels.. This method has three stages of student answers: concept answers, reasons, and confidence levels. Based on the results of diagnostic tests on students, it was obtained that the level of complete understanding of students was 23.53%, and the level of misconceptions was 23.53%. The level of misconception is 23.53%. Students experienced the greatest misconceptions in the physical quantities sub-material, which amounted to 52.94%, and the lowest in the measurement material at 5.89%. Most students believe that the angle is not a principal quantity, as indicated by the wrong student answers accompanied by the reasons and with a high confidence level-certainly a misconception because according to experts, the angle is also a principal quantity. Although the percentage of misconceptions is tiny, students still experience misconceptions in each submitter.
An In-depth Comparative Analysis of Conical Curve Variations: Exploring the Distinctive Properties and Applications of Elliptic and Hyperbolic Cones
Authors: M. Mahdi Ahmed
Published: January 2024

Elliptic and hyperbolic cones are examined in this article to understand their properties and practical uses. Through a detailed comparison examination, we attempt to understand the mathematical complexities and how these forms apply to different disciplines.
Approach to Grayscale Image Enhancement by Noise Reduction
Authors: Hussein Abed Hamed Saad , Mohamed Mahmoud maadi Mahmoud
Published: January 2024

With the rise in the quantity of digital photos taken each day, there is a rising desire for more accurate and aesthetically appealing images. More precisely, noise is a problem for photos in terms of corruption since certain sounds may be introduced to the image automatically during capture. Additionally, camera sensors and lighting conditions contribute to the noise that might be added to the picture. This is referred to as additive noise. Noise reduction is critical for achieving a beautiful picture. describe a robust approach for decreasing noise in photos based on the heat equation in this study. Additionally, we compare our proposed technique against many existing methods using denoising performance indicators.
Exploring the Efficacy of Lightweight Encryption Techniques: A Comprehensive Review
Authors: Hameed Razzaq al-Mahmood Haider , N. Alsaad Saad
Published: January 2024

With the widespread adoption of applications and IoT devices, modern society has come to rely on them in various aspects of daily life. These applications and devices cover a range of needs, including home appliances and even medical devices for body monitoring. Because a significant amount of data generated by IoT devices and applications must be transmitted over networks, particularly the Internet, there is an increased risk of cyber-attacks on this transmitted data. This data can be text, images, sound, or other forms, and it is critical to ensure its protection, especially if it contains valuable information. Extensive research has been conducted on various encryption algorithms to ensure the security of transmitted data, whether through block ciphers or stream ciphers. In addition, efforts have been made to increase encryption efficiency by securing the transmission channels. The question of this research is “what is the state of the art in the lightweight encryption in terms of strength and speed up the process?”.   This paper provides a comprehensive survey of research related to two main categories of lightweight encryption, and work focused on secure authentication between entities. The paper includes an analysis of the techniques used in each surveyed paper and highlights their main results.
Some Properties of Fuzzy Ideals of Unit Regular Semigroups
Authors: Fadhel Hameed A'laa , S. Mohammed Akram
Published: January 2024

This paper introduces the concept of unit-regular fuzzy ideals of semi groups, which is a generalization of regular fuzzy ideals. Several of their significant related properties have been examined. According to the unit-regular semi group, the fuzzy-interior-ideal, fuzzy-ideal, fuzzy-bi-ideal, and fuzzy-generalized-bi-ideal have all been described.
On Sandwich Results of Univalent Functions Defined by Generalized Abbas-Atshan Operator
Authors: Ali Shakir Qasim , Galib Atshan Waggas
Published: January 2024

In the present paper, we obtain sandwich theorems for univalent functions by using some results of differential subordination and superordination for univalent functions involving integral operator.
A Study of the Half-Cauchy-Exponential Prior in Quantile Regression
Authors: Obayes Kadhim Mohammed , Alhamzawi Ahmed
Published: January 2024

A modification of the familiar half-Cauchy prior is considered. The modification consists of writing the half-Cauchy prior as the product of the gamma and inverse gamma distributions plus adding an exponential distribution on the scale parameter. Furthermore, we consider this model in the setting of the quantile regression structure. Additionally, The Gibbs sampler is calculated for this model. Finally, the properties of this model are demonstrated using simulated data and it is shown that this method performs very well compared to other distributions.
Effect of Rotation on Peristaltic flow for Powell-Eyring in Asymmetric channel with porous medium.
Authors: Obayes Kadhim Mohammed
Published: January 2024

In this paper, we studied, peristaltic motion and rotation for Powell - Eyring fluid in an asymmetric channel with porous medium. The motion equations have been solved by the well-known analytical methods, which is the perturbation technique, under the assumption of long wave length and low Reynolds number a proximation.         

     The study established that several dimensionless characteristics regulate mobility. Each of these dimensionless elements' impact on pressure and velocity, as well as the key aspects of pumping characteristics and the contour plot for the stream lines and trapping, were examined.
Lasso Quantile Principal Component Regression
Authors: H. Al-Sharoot Mohammed , K. Mohammed Fatimah , N. Mayali Hameedah
Published: January 2024

The classical regression model is very sensitive to econometrics problems, one this econometrics problem is Multicollinearity, to overcome this problem ,we will use two solutions: Firstly  via using  principal component regression and second solution via using quantile regression. When mix between these methods together give as robust model against the  Multicollinearity problem. The simulation scenario and real data using in this study.
Bayesian lasso principal component regression with an application
Authors: H. AL-Sharoot Mohammed , Abd Al Hussein Kazem Wael , Awwad Al-Fatlawi Shatha
Published: January 2024

The topic of variable selection in constructing statistical models has received wide attention in many applications, including medical, economic, engineering, and various other fields. Since, this method helps researchers save time and effort, by concentrating on crucial variables and eliminating unimportant variables from the statistical models under study. The famous variable selection technique known as the Least absolute Shrinkage and Selection Operator (LASSO) method works by reducing the number of variables with high explanatory power. This study will combine two methods for variable shrinkage, which minimize both simultaneously by removing variables with little effect and reducing the variance and bias of the estimated parameters. Two techniques were used to validate the results of our current study. The first approach uses simulation, where data is produced using predetermined hypotheses and models. The second approach uses data from actual sources .
Theorems of Strong Differential Sandwich Results for Analytic Functions Associated with Wanas Fractional Integral Operator
Authors: Chyad  Khachi Samer , Kareem Wanas Abbas
Published: January 2024

The objective of this research is to produce robust differential subordination and differential superordination results using the fractional integral of the Wanas differential operator. These results apply to Analytic functions defined on , with Coefficient functions that are holomorphic in  Furthermore, for each instance of strong differential subordination and strong differential superordination, we provide the most superior dominant and the most subordinate subordinant. These findings are used to achieve strong sandwich results.
ADMINISTRAÇÃO EM FOCO - RECURSOS HUMANOS E INTERNACIONALIZAÇÃO DE EMPRESAS VOLUME 3
Authors: Assis Afonso Henrique Souza de
Published: January 2024

Recursos Humanos e Internacionalização de Empresas
ADMINISTRAÇÃO EM FOCO - FINANÇAS, COMÉRCIO INTERNACIONAL E INOVAÇÃO VOLUME 4
Authors: Assis Afonso Henrique Souza de
Published: January 2024

Finanças, Comércio Internacional e Inovação