bluuebunny/crossref_metadata_2025 huggingface dataset:
Cluster-Mentoring for Sustainable Competency: A Case Study of PTK Training for Islamic Education Teachers in Junior High Schools
Authors: Sabarudin Sabarudin , Mubin Muhammad Nurul , Kim Maksim , Fauziah Arifah
Published: October 2023

Purpose – Given the various challenges faced by teachers in making PTK reports, this study aims to investigate the effectiveness of the Cluster-Mentoring-based mentor program in supporting the sustainability of competency programs for Islamic Education teachers at the Junior High School level in Sleman District.
Design/methods/approach – This case study evaluated the implementation of a Cluster-Mentoring-supported PTK training program among Islamic education teachers from 14 secondary schools participating in the PTK and Mendeley training using observations, online interviews, and documentation for data collection, by applying purposive sampling techniques.
Findings – This study aims to improve the understanding of Islamic Education teachers in Sleman District about PTK preparation for junior high school, using Zoom meeting-based online training and Cluster-Mentoring methods and practices. The training was practical, with 63% of teachers having no difficulty finding research problems, 57% having no difficulty creating background problems, and 70% finding Mendeley app training easy to understand. After Mendeley’s training, 87.5% of trainees were able to use the app to create writing references. Cluster-Mentoring Grouping also helped participants understand the material better.
Research implications/limitations – This study only focuses on variables related to PTK training programs, specifically the Cluster-Mentoring model and training outcomes. The study did not analyze other variables, such as teacher obstacles and attitudes.
Originality/value – This study aims at providing an overview of competency development programs through PTK training assistance and delays using the Cluster-Mentoring method for Islamic Education teachers in Secondary Schools in Sleman.
Enrichment and Characterisation of Cellulose Degrading Bacteria
Authors: Golwalkar Sucheta , Khatri Farida
Published: October 2023

In the current research, a total of 10 bacterial isolates have been collected from municipal waste, vegetable waste, a dumping ground, a rice field, termite waste, cotton dyeing industry waste, forest waste, the soil under a coconut tree, dead decomposed plant waste, and sewage waste.Using soluble carboxy methyl cellulose degradation assays, the 10 bacterial strains have been isolated and examined for cellulolytic activity. In one percentage CMC agar medium, four strains, namely C9D, C9E, C9C, and C9B, efficiently digested cellulose, with a cellulolytic index of 35 mm, 25 mm, 17 mm, and 18 mm, respectively. The appearance of a clear zone was utilised to estimate cellulolytic activity. High-cellulolytic-activity isolates were identified up to the genus level.
Compact UWB Monopole Antenna with Tunable Dual Band Notched Characteristics for WiMAX and WLAN Applications
Authors: Rai Vikas Kumar , Kumar Mithilesh
Published: October 2023

The present work shows a planar compact ultra-wideband (UWB) monopole antenna with controllable dualband-notch frequencies at 3.3 GHz for WiMAX and 5 GHz for WLAN. In the proposed antenna, the lower notchband (at a frequency of 3.3 GHz) is made by cutting a thin horizontal strip on top of the radiating patch. The uppernotch band (at a frequency of 5 GHz) is made by putting two narrow parasitic strips in the shape of an “I” oneither side of the radiating patch. The incorporation of three varactor diodes between the radiating patch and three metallic strips provides the flexibility of adjusting the notch frequencies. The notch band tunability between 3.15 GHz and 3.69 GHz and between 4.93 GHz and 5.59 GHz, respectively, is achieved by changing the bias voltageof the varactor diode between 0 V and 30 V. The gain and efficiency characteristics of the designed antenna alsoexhibit band rejection at the respective notch frequencies. The design principle is validated by fabricating andmeasuring a prototype of the proposed dual-band, notched UWB antenna. For three different bias voltages of thevaractor, the simulated and experimental findings are in reasonable agreement. The proposed works demonstratebetter-notch characteristics as compared with other reported works over the UWB range
Studies of Jet A1 Fuel Atomization Through Non Circular Orifices
Authors: Pooja V. Vani , Kumar Rajiv
Published: October 2023

The performance of the liquid rocket engine depends on the atomization behavior of the fluid being injected into the combustion chamber. Generally, a plain injector with a circular orifice has been used in the injector, but it has the disadvantage of having a low spray cone angle. The breakup length, mean droplet diameter, and Sauter mean diameter is also higher. Thus, to overcome these drawbacks, non-circular orifices have been utilized in the present study. The shapes used for non-circular orifices are semi-circular and plus. The results obtained with the non-circular orifice is compared with the circular orifices of the same area ratio. The working fluid used for the studies is Jet A1 fuel. Studies were also conducted with different L/D ratios by choosing an effective orifice length to reduce the upstream losses. The axis-switching phenomena were observed with the semi-circular as well as with the plus jets. The mean droplet size of the circular jets was more prominent compared to non-circular jets, and the Sauter mean diameter of non-circular jets droplets was smaller than that of the circular jet droplet. The spray cone angle has increased by 290% for plus jets and 30% for semi-circular jets compared to circular jets.
Rapid and Accurate INS Transfer Alignment for Air Launched Tactical Missile Using Kalman Filter
Authors: Jain Sambhav Kumar , Jain Tapan K. , Shanker Saumya , Srivastava Srikant
Published: October 2023

An Inertial Navigation System (INS) independently measures the Position, Velocity, and Attitude (PVA) of thevehicle to navigate it towards the target. Since INS is a dead-reckoning system, it requires accurate initialization toprovide the navigation (PVA) solution. In the case of an air-launched tactical missile, the aircraft navigation system(Master INS) information is used to initialize accurately the missile INS (Slave INS). Rapid transfer alignment isneeded in today’s combat operation to converge slave INS initialization in the shortest possible time using aircraftnavigation information. The transfer alignment consists of first initializing the missile INS and establishing anavigation solution (PVA) using the missile IMU rates and accelerations, then a Kalman filter is used to, estimatethe errors between the Slave INS and Master INS. The proposed method’s simulation results show that a tacticalmissile INS can be aligned to an acceptable accuracy in a very short time based on the aircraft’s attitude information and with natural maneuvers experienced during aircraft take-off.
Recrystallisation Characteristics of a Cu Bearing HSLA Steel Assessed Through High Temperature Compressive Deformation
Authors: Kumar Atul , Vara Prasad T.V.V.S. , Karthik V.V. , Banerjee Kumkum , Gopinath K. , Balamuralikrishnan R.
Published: October 2023

Dynamic (DRX) operative duringdeformation and static recrystallization (SRX) operative after deformation are considered responsible for the changes in microstructure and texture of deformed materials. Especially in the case of advanced steels that are required in the form of plates of various thicknesses, hot rolling is the main manufacturing process during which the steel undergoes DRX under the rolls and SRX between rolling passes/strands. Knowledge on DRX and SRX characteristics of such steels is crucial for optimisation of hot rolling parameters,achieving the desired microstructure and consequently the targeted mechanical properties.In this study, certain key aspects of both dynamic (DRX) and static recrystallisation (SRX) behaviour of aCu-bearing HSLA steel, which was developed at DMRL, have been explored through high temperature deformation studies using Gleeble thermo-mechanical simulator. Through uniaxial compression testing in the austenitic regime, domains of continuous and discontinuous DRX prevalent in the steel were identified and critical parameters for initiation of dynamic recrystallisation viz., critical strain (ec), critical stress (sc), peak stress (sp) and peak strain (ep) were determined as a function of temperature and strain rate. SRX characteristics were assessed through uniaxial double hit compression tests with fixed strain rate and strain per hit but at different temperatures and with different imposed intermediate static recrystallisation (ISRT) times. From the fractional softening data, parameters such as time for 50% recrystallisation, t0.5, temperature for 50% recrystallisation, T0.5, and activation energy, QSRX have been estimated.Although the steel exhibited good plastic deformation characteristics, the results suggest that the role of copper in retarding recrystallisation is significant.
Effect of Aging on the Ballistic Performance of AA 7017 Alloy
Authors: Jena Pradipta Kumar , Suresh K. , Sivakumar K. , Mandal R. K. , Singh A. K.
Published: October 2023

This study presents the effect of aging on microstructure, texture, mechanical and ballistic properties of AA-7017 aluminium alloy. AA-7017 alloy is subjected to three different aging namely under-aging, peak-aging and over-aging. Significant difference is observed in the mechanical properties after aging. The alloy exhibits maximum strength and hardness in the peak-aged condition. From texture measurements, it is noticed that the overall intensity of orientation distribution function increases from under-aged to peak-aged condition. The AA-7017 aged plates are impacted with 7.62 mm steel core projectiles at 820±10 m/s to evaluate the ballistic performance. It is noticed that AA-7017 alloy displays best ballistic resistance in peak-aged condition. Distorted material flow lines and adiabatic shear band induced cracking is detected in post ballistic microstructure. The ballistic performance of AA-7017 alloy is correlated with the variations in the microstructure and mechanical properties with aging
Microstructural Evolution and Mechanical Properties Co relation of Cold rolled Ferritic Lightweight Steel with Increasing Carbon
Authors: Khaple Shiv Kumar , Satya Prasad V.V. , Krishna B Gopala , Satyanararana D. V.V.
Published: October 2023

The structure-properties relationship of cold-rolled and annealed Fe-7wt.%Al lightweight steels for varying carbon contents is explored in this work.Unlike Fe-Mn-Al-C based steels, which experienced processing issues, the hot-worked plates of the present steel were successfully cold-rolled to 2mm thick sheets. Various phases present in the steel for different carbon contents as predicted using the ThermoCalc programme are in line with the experimental findings. The basic alloy with 0.01C contains only a ferrite phase, however, the alloys with  higher carbon content  have a significant quantity of κ-carbide precipitates. The addition of carbon to Fe-7wt.%Al steel has improved its  tensile strength significantly (438 to 828MPa). Tensile elongation, on the other hand, has decreased dramatically (26 to 12 percent) with increasing carbon content The reduction in ductility with increasing carbon is mainly ascribed to the increasing κ-carbide  precipitates volume fraction with higher hardness, but not due to the environmental embrittlement as observed in case of higher Al containing steels.
Effect of Vanadium Addition On Structure And Soft Magnetic Properties of Nanocrystalline FeCoZrBCu Melt Spun Alloys
Authors: Kumar D Atchyut , Nagireddi Saijyothi , Babu D Arvindha , Chelvane J Arout , Raja M Manivel , Nandy T K
Published: October 2023

In this report, glass forming ability, structure and soft magnetic properties of melt spun ribbons of (Fe1-xCox) 88-yVyZr7B4Cu1alloys with compositions x0.1y2, x0.1y4 and x0.1y6 & x0.35y2, x0.35y4 and x0.35y6 have been investigated. All alloys were found to be fully amorphous after melt spinning. Annealing of amorphous ribbons of x0.1 series alloys leads to the formation of bcc α-Fe(Co) phase and Fe2Zr phase in the amorphous matrix, while annealing of amorphous ribbons of x0.35 series alloys, leads to the formation of only bcc α-Fe(Co) phase in the amorphous matrix. High precision lattice parameter calculation revealed that V addition influences the phase formation in low Co containing x0.1 alloys. It leads to low volume fraction of bcc α-Fe(Co) phase and promotes Fe2Zr phase. A higher Co content increases the Curie temperature of amorphous phase, while V addition decreases the TC of amorphous phase in both x0.1 and x0.35 series of alloys. Saturation magnetization (Ms) of x0.35 alloys are higher than of x0.1 alloy due to higher Co content and the Ms decreases with increasing V content due to its non-magnetic nature. Coercivity was found to be increased with annealing in x0.35 alloys due to the low volume fraction formation of bcc α-Fe(Co) phase and Fe2Zr phase. The coercivity decreases with increasing V addition in x0.35 alloys as spun ribbons and a lowest coercivity of 0.13 Oe has been obtained in x0.35y6 alloy which is one of the lowest among FeCoZrBCu alloys reported.
Development of Lead Free Magnetoelectric Materials for Magnetic Field Sensor applications
Authors: Srinivas Adirajs , Sowmya N. Shara , Naini Pavan Kumar , Ghosal Partha , Raja M. Manivel
Published: October 2023

(100-x) Na0.5Bi0.5TiO3 (NBT)-(x) NiFe2O4 (NFO)(x = 0, 20, 40, 60, 80 and 100) composites are synthesized using conventional solid state reaction method. Crystal structure studies are performed by using X-ray Diffraction technique (XRD) and the Rietveld analysis of XRD patterns confirms the co-existence of cubic (NFO) and rhombohedral (NBT) symmetry with Fd- 3m and R3c space groups, respectively. Micro-structural study reveals the formation of combination of composite phases and its inter-coupling grains. The average grain sizes and area percentage of each phase for the composites are calculated using Image J software. The Magnetisation versus Magnetic field (M-H) hysteresis loops show soft magnetic behavior of composites with variation in Saturation magnetization (MS) and Coercivity (HC). A maximum MS (34 emu/g) and low HC (15 Oe) is obtained for (80) NFO - (20) NBT composite.The Polarization – Electric field (P-E) analysis shows that the maximum saturation polarization (PS) is obtained for (60)NBT-(40)NFO sample and is attributed to the leakage current generated by conductive NFO phase. The coupling between the ferrite and ferroelectric phase is studied based on the magnetoelectric voltage coefficient(αME). The maximum (αME) of 1.82 mV/cm-Oe is obtained for (80)NBT -(20)NFO sample and this is almost 80% higher than the previously published literature on NBT-NFO composites. This can be attributed to the uniform distribution of grains with each ferroelectric phase surrounded by ferrite phase as shown in the morphological study.
Competências necessárias ao engenheiro de produção
Authors: Silva Adriana Aparecida Dambros da , Rafaski Adriana Dias , Silva Franciele Schutze da
Published: October 2023

Formar Engenheiros de Produção, preparados para atuar em contextos de trabalho que evoluem rapidamente, requer de cursos de graduação constante avaliação e periódica atualização. Uma estratégia importante utilizada nesse processo é a escuta dos egressos, da sua avaliação sobre a formação que tiveram, considerando as exigências que encontraram no ambiente de trabalho. Também, a escuta de gerentes de produção industrial traz importantes contribuições, com demandas atuais do mercado em relação às competências necessárias a esses profissionais. Assim, esta pesquisa objetivou identificar as competências necessárias ao engenheiro de produção na perspectiva de egressos e de gerentes de produção industrial, comparando com as competências que o curso investigado busca desenvolver. Para isso, foi realizado um estudo de caso, com coleta de dados por questionário online, aplicado a egressos do curso, e entrevistas com dezesseis gerentes de produção industrial da região oeste do Paraná. Como resultado, destacou-se a importância das competências não técnicas, sendo também indicadas como as mais ausentes em profissionais da área. Verificou-se que as competências mais valorizadas pelos participantes estão consideradas no curso investigado, mas algumas devem ser mais evidenciadas. Concluiu-se pela necessidade de estratégias de aprendizagens em contextos autênticos, oportunizando vivências profissionais.
Nominatywny i aksjologiczny paradygmat denotacji „działania wojenne w Ukrainie: 2022–2023”
Authors: Stepanenko Mykoła
Published: October 2023

Artykuł poświęcony jest systematycznej analizie nominatywnego i aksjologicznego paradygmatu denotacji „działania wojenne w Ukrainie: 2022–2023”, której składnikami są dwu- i wieloczłonowe nazwy gatunkowe rodzajowej nazwy ‘wojna’. Badanie opiera się na filozoficzno-lingwistycznej teorii o pojęciowym i językowym obrazie świata, mentalnej i językowej istocie języka, jego obiektywnym i subiektywnym kształcie. Oficjalne i nieoficjalne nazwy badanego wydarzenia obserwowano w tekstach internetowych, które konsekwentnie i dokładnie odzwierciedlają ewolucję współczesnego zbiorowego doświadczenia wojennego Ukraińców i społeczności światowej i są łączone w 9 podmodeli. Jako kryterium ich klasyfikacji wybrano rodzaj referencji semantycznej specyfikatorów przydawkowych, których rdzeń funkcjonalny ukształtowały środki identyfikujące „kto → identyczny nadawca Rosja”, „gdzie/dokąd → identyczna przestrzeń Ukraina”, „kiedy → identyczny czas 2022”. Za pomocą analizy semazjologicznej scharakteryzowano strukturę semantyczną każdego podmodelu, wyjaśniono konstytutywne właściwości rozpowszechniania słowa ‘wojna’ oraz ujawniono ich potencjał aksjologiczny. Zaproponowano także komentarze socjolingwistyczne uzasadniające stosowność/niestosowność określonej nazwy. Wyrażono przypuszczenie dotyczące potencjalnej nominacji uniwersalnej opisywanego choronimu jako tytułu przyszłych haseł encyklopedycznych i leksykograficznych (wojna rosyjsko-ukraińska 2022–?).
Obraz anioła w wierszach poetów amatorów Majdanu
Authors: Titus Jana
Published: October 2023

Artykuł dotyczy jednego z najczęściej pojawiających się w tekstach Majdanu obrazu, mianowicie obrazu anioła. Jest on wielokrotnie przywoływany w wierszach poetów amatorów. Oprócz treści sakralnych ten obraz zawiera również inne cechy, co ujawnia jego wieloaspektowość. Ukształtowany w umysłach Ukraińców obraz w okresie Rewolucji Godności przybiera nowe konotacje i niuanse. W badaniu wytypowano kilka charakterystycznych form zauważalnych w poezji amatorskiej: anioł obrońca, anioł stróż, archanioł Michał i anioł śmierci. W wierszach Majdanu nie zawsze ten symboliczny obraz pokazany jest jako istota niebiańska, często okazuje się ucieleśnieniem doświadczeń protestującego, zwłaszcza tragicznej śmierci w imię wolności i narodu. W artykule zostały przeanalizowane liczne wiersze poetów amatorów, co pozwala na wyeksponowanie specyfiki każdego z nich. Autorka dochodzi do wniosku, że amatorska poezja Majdanu zasługuje na szczególne miejsce we współczesnej literaturze ukraińskiej.
DIC-like syndrome in a post-pre-eclampsia birth in a premature infant in a peri-COVID scenario
Authors: Hassan Taha F. , Morgan Ryan D. , Raghuram Akshay , Baronia Benedicto C.
Published: October 2023

Objectives

This article outlines an unusual presentation of a premature infant born from a pre-eclamptic mother born with a presentation resembling a disseminated intravascular coagulation syndrome.

Case presentation

Pregnancy-induced hypertension, also known as pre-eclampsia, and premature birth pose significant risks to neonates, making the fetus more susceptible to immunodeficiencies and coagulopathies. This article highlights a premature infant born to a pre-eclamptic mother with multiple complications. Our case involved jaundice, neonatal meningitis, thrombocytopenia, leukopenia, neutropenia, hemorrhage, apnea, gastrointestinal defects, and periventricular leukomalacia. Often these complications are seen immediately after birth; these symptoms may present after a certain amount of time lapses if the neonates if afflicted with malignancy or a viral, fungal, or bacterial infection. Here we describe the case of a premature neonate born to a preeclamptic mother that experienced these complications one day after her birth.

Conclusions

This is the first known case of an infant experiencing a “DIC-like” syndrome without any diagnosis of a primary hematological malignancy or infection after a certain amount of time had lapsed since her birth. As complications in premature infants as well as those from pre-eclamptic mothers are common, this case report highlights a successful model of care. We also explore the effect of a peri-COVID setting on the presentation of this patient, as similar cases have occurred post-COVID-19.
Multimode parabolic index fiber integrated with spatiotemporal vertical cavity surface emitting laser sources for optical fiber system improvement
Authors: Gopalan Anitha , Kumar Chandran Ramesh , Vijay Sreeja , Mary Merlin Livingston Louis , Subha Thankamony Devakhi , Arumugam Parimala , Hossam Zain Wafaa Fahim
Published: October 2023

This study has demonstrated the multimode parabolic index fibers integrated with spatiotemporal VCSEL sources for the optical fiber system improvement. Average radial intensity is clarified against fiber radius variations with 0.1 % refractive difference index step. The Max base band Q factor form is demonstrated against the fiber refractive index step variations. The Max base band Q factor form variations are demonstrated against VCSEL diode bias current variations. The Max base band Q factor form variations are clarified against the fiber core radius variations. The Max base band Q factor form is simulated against the fiber cladding thickness variations. Multimode fiber calculation report at the wavelength 1550 nm for the light source (Pol. X = VCSEL LP [0,1]) is reported. The Max lighted base optical band form power is clarified versus time after parabolic index multimode fiber with 0.1 % refractive difference index step. The Max optical lighted base band power form is demonstrated against wavelength after parabolic index multimode fiber with 0.1 % refractive difference index step. The Max base Q band form factor is simulated after spatial APD photodetector receiver with 0.1 % refractive difference index step. The fiber base band mode form intensity in x and d directions is demonstrated within the fiber with 0.1 % refractive difference index step. The fiber base band encircled flux form is studied and simulated versus fiber radius variations with 0.1 % refractive difference index step.
There is Nothing Like a DREEM to Create the Future of Medical Education: International and Hungarian Medical and Dentistry Students’ Perceptions on their Learning Environment in Hungary
Authors:   ,   PTE ETK Egészségtudományi Doktori Iskola, Dávidovics Anna
Published: October 2023

In the last decades of the 20th century, student mobility has significantly increased worldwide. Tuition fees paid by international students have become a crucial part of university revenue, compelling higher education institutions to compete with each other. Global rankings of the best universities have emerged, and the growing influx of international students has transformed the student population at many institutions. In Hungary, the number of international students is most significant at the four medical schools: in Budapest, Debrecen, Pécs, and Szeged. International students come from various countries, with diverse cultural backgrounds, varied experiences, educational needs, and expectations. This raises the following questions: To what extent do Hungarian medical schools meet the expectations of international and Hungarian students? Are international students satisfied with medical and dental education, when compared with their Hungarian peers? The aim of the research was to comprehensively examine the opinions of international and Hungarian medical and dentistry students, studying at the four Hungarian medical schools, regarding their learning environment. This encompassed all aspects of their studies, from the actual physical environment to teaching methods, their own professional knowledge, and social networks. Based on the results, it can be concluded that, while international and Hungarian medical and dentistry students were generally satisfied with the learning environment at the four medical schools in Hungary, significant differences were observed among those enrolled in the Hungarian, German, and English programmes. This highlights areas where further development could enhance the quality and international recognition of medical and dental education in Hungary.
SETTING UP THE GENETIC ALGORITHM FOR THE INDIVIDUALIZED TREATMENT STRATEGY SEARCHING
Authors: Dydyk Anastasiia P. , Nosovets Olena K. , Babenko Vitalii O.
Published: October 2023

The genetic algorithm is a verified mechanism for optimization task solutions. Being a heuristic algorithm, it allows speeding up the task solving by the biological evolution principle use. Recently, this algorithm was offered as a method of an individualized treatment strategy search, where it was necessary to optimize the patient’sstatein the distant period, going through various treatment combinations.In that research as an optimization function, the additive convolution function of the patient’sstateindicatorsin the distant period was used, obtained with the help of Saaty analytic hierarchy process, which is one of the multi-criteria decision making methods. Despite showing good results, the genetic algorithm was set with standard parameters. Taking into consideration a big quantity of the parameters, the present study has the aim to find the optimum parameters for the algorithm. First of all, it is necessary for those, who incorporate this algorithm in their work, namely doctors, when they need to prescribe a treatment for a patient. The study describes the analysis of various genetic algorithm parameters and their use in algorithm test launches for individualized treatment strategy search. Also, the optimal patient’s input parameter subsets wereselected,using the correlation feature selection criterion. The selected parameters were necessary for modeling indicators of the patient’sstateafter treatment.Modeling wasperformed via random forest classifier with preliminarydivided total sample intotraining(eighty percent) and testing(twenty percent) ones. Two different databases of patients with congenital heart diseases were usedfor the study, allowing the optimal parameters being more reliable for their future use. In the end, it all allows finding the parameters, which are first of allexclusively recommendatoryto the doctors before using the algorithm.
ANALYSIS OF DYNAMIC AND RELIABILITY INDICATORS OF ATHERMOELECTRIC COOLER AT MINIMIZATION OF A COMPLEX OFTHREE BASIC PARAMETERS
Authors: Zaykov Vladimir P. , Mescheryakov Vladimir I. , Zhuravlov Yurii I.
Published: October 2023

The inclusion of a thermoelectric cooler in the thermal mode control circuit of a heat-loaded element operating in a pulsed mode makes the requirements for dynamic characteristics and reliability indicators more stringent. The main parameters of thermoelectric devices that provide a given thermal mode of operation include: the number of thermoelements, the magnitude of the operating current and the heat dissipation capacity of the radiator. With the optimal design of a thermoelectric cooler, one should strive to reduce the number of thermoelements, the magnitude of the operating current and the heat sink surface of the radiator. With agiven geometry of thermoelement legs, a decrease in the number of thermoelements leads to a decrease in the specified cooling capacity or heat load. This can be compensated by an increase in the operating current, and, conversely, a decrease in the operating current leads to the need to increase the number of thermoelements, which affects the reliability indicators. The possibility of controlling the thermal regime of single-stage thermoelectric cooling devices while minimizing this complex is considered.The number of thermoelements, the magnitude of the operating current and the heat dissipation capacity of the radiator were investigated in the range of temperature drops from 10K to 60K at a thermal load of 0.5 W for different geometry of thermoelement legs. A relationship is obtained to determine the optimal relative operating current corresponding to the minimum of the complex of the number of thermoelements, the value of the operating current and the heat sink surface of the radiator.The analysis of the model revealed that with an increase in the relative operating current for different geometry of thermoelement legs,the required number of thermo-elements decreases, the time to reach a stationary mode, the relative value of the failure rate increases, and the probability of failure-free operation decreases. The functional dependence of the coefficient of performance has a maximum;the heat sink capacity of the radiator has a minimum, and does not depend on the geometry of thermoelements and the amount of energy expended.It is shown that the use of the current mode of operation at the minimum value of the complex provides optimal control of the thermal mode of the thermoelectric cooler with a minimum amount of consumed energy.
Lipidomics analysis of impaired glucose tolerance and type 2 diabetes mellitus in overweight or obese elderly adults
Authors: Shao Feifei , Hu Xinxin , Li Jiayu , Bai Bona , Tian Limin
Published: October 2023

Aims

Aging, obesity, and type 2 diabetes mellitus (T2DM) form a metabolic disease continuum that has a continuously increasing prevalence. Lipidomics explains the complex interactions between lipid metabolism and metabolic diseases. We aimed to systematically investigate the plasma lipidome changes induced by newly diagnosed impaired glucose tolerance (IGT) and T2DM in overweight/obese elderly individuals and to identify potential biomarkers to differentiate between the IGT, T2DM, and control groups.

Methods

Plasma samples from 148 overweight/obese elderly individuals, including 52 patients with IGT, 47 patients with T2DM, and 49 euglycemic controls, were analyzed using a high-coverage nontargeted absolute quantitative lipidomics approach.

Results

We quantified 1840 lipids from thirty-eight classes and seven lipid categories. Among overweight/obese elderly individuals, the lipidomic profiles of IGT and T2DM patients were significantly different from those of controls, while they were similar in the IGT and T2DM groups. The concentrations of diglycerides, triglycerides, phosphatidylcholines, and ceramides were obviously altered in the IGT and T2DM groups. Particularly, IGT and T2DM induced the accumulation of triglycerides with longer carbon atom numbers (C44–50) and saturated or lower double bond numbers (n (C=C) = 0–2). Furthermore, a total of 17 potential lipidic biomarkers were identified to successfully differentiate between the IGT, T2DM, and control groups.

Conclusions

In overweight/obese elderly patients, IGT and T2DM induced apparent lipidome-wide changes. This study’s results may contribute to explaining the complex dysfunctional lipid metabolism in aging, obesity, and diabetes.
Violencia digital y vulneración de los derechos de las mujeres en Colombia
Authors: Núñez Gómez Fabián Camilo , Núñez Gómez Angie Mayerly
Published: October 2023

El estudio realizado tuvo como objetivo identificar el aporte del teatro como Las mujeres han enfrentado diversas problemáticas que han aparecido en el mundo a través del tiempo; hoy en día, con la comunicación digital y su inmediatez, las redes sociales son utilizadas para transportar un enemigo que viola la honra y la dignidad, denominado violencia digital, la cual es la encargada de vulnerar derechos y perturbar la vida de sus víctimas; a su vez, ha ocasionado que sean notable las brechas legales de las leyes en Colombia para contrarrestar y mitigar este delito hacia las mujeres.
La investigación desde una forma descriptiva hace una contextualización de los medios digitales, buscando visualizar los crímenes cibernéticos que se cometen a través de ellas, también, mostrar una comparación entre leyes existentes con otros países, teniendo como objetivo general analizar el vacío que existe en la jurisprudencia colombiana para defender los derechos de las mujeres a través de la internet.
Incidencia de la interacción entre cuidadores y el adulto mayor. Caso Centro de Atención al Adulto Mayor en Copacabana, Antioquia
Authors: Flórez Berrío Paula Andrea , Serna Quintero Yuliza , Restrepo Jaramillo Manuela , Parada Trujillo Abad Ernesto , Quiroz Ospina Isabel Cristina
Published: October 2023

Este artículo de investigación tuvo como objetivo estudiar la incidencia de la interacción con adultos mayores en estado de abandono entre personas con funciones de cuidado y atención en un Centro de Protección al Adulto Mayor en Copacabana, Antioquia (Colombia). La investigación estuvo enmarcada en el paradigma fenomenológico, con un enfoque cualitativo de nivel descriptivo y el método narrativa testimonial. Se empleó como instrumento de recolección de información una entrevista semiestructurada con 18 preguntas relacionadas con las dimensiones: factores sociodemográficos, funciones y tareas, componente emocional, salud física, salud mental, dinámica sociofamiliar y ético moral. Los datos se analizaron a través de un proceso de codificación y categorización con apoyo del software ATLAS.ti. Los resultados muestran la emergencia de 241 códigos abiertos y axiales distribuidos en 5 categorías inductivas, las cuales describen el complejo entramado de sentimientos, emociones, percepciones y sentires que experimenta el cuidador como resultado del contacto humano con el adulto mayor. Se concluye que en el ejercicio laboral los cuidadores experimentan situaciones que inciden emocionalmente, derivados del contacto humano con el adulto mayor, pero que no influyen en su vida privada, pues existe una buena regulación emocional que permite separar la vida laboral de la personal.
Development of new methods for the synthesis of bulk and coatings of calcium hydroxyapatite
Authors:   , Karalkevičienė Rasa
Published: October 2023

Naujų kalcio hidroksiapatito miltelių ir dangų sintezės metodų vystymas
Effectiveness of methods of assessing students' health level
Authors:   National Pharmaceutical University, Nevelyka A.V. , Sutula O.V. ,   Youth Sports School, Zelenenko N.O. ,   National Pharmaceutical University
Published: October 2023

Purpose: The article presents the results of the assessment of the health level of first-year students of the National Pharmaceutical University. Material and methods: 188 students (141 - girls, 47 - boys) of the first year of study were examined. In the course of the study, the level of health was determined using various methods: the method of J.S. Weinbaum, the method of O.A. Pyrohova, evaluation of the level of somatic health according to G.L. Apanasenko. Height, body weight, dynamometry, vital lung capacity, heart rate, blood pressure, Ruffier index and corresponding indices (body mass index, vital index, strength index, double product) were determined in all subjects. Results: our research confirmed the information of scientists about the average level of health of student youth in Ukraine. Conclusions: The results of research indicate that the health level of first-year students according to the method of O.A. Pirogovova for girls is at the "average and above average level", and for boys this indicator is at the "above average level". According to the method of G.L. Apanasenko, the level of health of female students is at the "average level", and for boys this indicator is at the "below average and average level". According to the methodology of J.S. Weinbaum, the health level of students is on the II degree of health.
The First Record from Ukraine of the Spider Monaeses israeliensis (Aranei, Thomisidae), from the Crimea
Authors: Fedoriak M. M. , Kovblyuk M. M. , Kastrygina Z. A.
Published: October 2023

Monaeses israeliensis Levy, 1973 is recorded from Cape Aya, Crimean Peninsula. This is also the first record of this species in Ukraine. Comments on the geographical distribution and diagnostic illustrations of this species are given.
Changes in the Structure of Nest Complexes of the Red Wood Ants Formica rufa and F. polyctena (Hymenoptera, Formicidae) in Urban Forests
Authors: Stukalyuk S. , Goncharenko I. , Kozyr M.
Published: October 2023

The aim of this work is to evaluate changes in the structure of nest complexes of two species of red wood ants: Formica rufa Linnaeus, 1761 and F. polyctena Foerster, 1850, in the city of Kyiv (Ukraine) using morpho[1]metric indicators, as well as to evaluate their dynamics. In 2014–2022, nest complexes of two species of red wood ants (Formica rufa, F. polyctena) were observed in urbanised forests within the city of Kyiv. A total of 472 F. rufa and 411 F. polyctena nests were studied in 7 nest complexes (4 — F. polyctena, 3 — F. rufa). The total volume of F. polyctena nests were found to decrease by 2020–2021, while the volume of F. rufa nests remained at the same level or even increased. This suggests that F. rufa is more resistant to changes in forestry conditions.
Insects Associated with the European Mistletoe (Viscum album) in Western Ukraine: a Pilot Study
Authors: Zamoroka A. M. , Shparyk V. Yu. , Dovhaniuk I. Ya. , Varga O. O.
Published: October 2023

The first insect-targeted study of the European mistletoe, Viscum album L., was conducted in Ukraine. In total, 35 species of insects reared from mistletoe were identified to belong to 5 orders, 20 families and 34 genera. Twenty-seven identified species were reared from mistletoe for the first time, including 17 species of Hymenoptera, 8 species of Coleoptera and 2 species of Diptera. Our results revealed significant gaps in knowledge about insects associated with mistletoe. This is appeared in the fact that more than 77 % of the insects we reared have never been detected on mistletoe before. It is obviously that 70 % to 90 % of the insects associated with mistletoe remain unknown. We also found a highly probable tripartite link between the European mistletoe, parasitic fungus Sphaeropsis visci and the saproxylic and mycetophagous Coleoptera. The in[1]teraction of Coleoptera with S. visci is facultatively mutualistic, and beetles act as vectors to spread spores and mycelium among mistletoes. In addition, we found the mass breading of invasive species Leiopus femoratus on V. album. Hence, V. album might play a crucial role in the mass and rapid invasion of L. femoratus in Europe.
A New Species of the Genus Collyria (Hymenoptera, Ichneumonidae, Collyriinae) from Armenia
Authors: Varga O.
Published: October 2023

Collyria montana sp. n., from Armenia is described and illustrated. It is the fi rst record of the genus Collyria from the country and eighth known Western Palaearctic species.
Determinants of Indonesian Sugar Import
Authors: Inayaturrohmah Winni Putri , Istiqomah Istiqomah , Gunawan Ratna Setyawati
Published: October 2023

Indonesian sugar imports have increased due to a steady increase in sugar consumption, while domestic sugar output has increased but has not kept pace with consumption. This study aims to examine the impact of sugar consumption, income per capita, sugarcane harvested area, and sugarcane productivity on sugar imports in Indonesia. The data in this study include time series data from 1995 to 2021 that were analyzed using multiple regression. Sugar consumption and income per capita have a statistically significant positive effect on sugar import, whereas sugarcane harvested area and sugarcane productivity significantly negatively affect sugar import. Several policy options for reducing sugar imports are recommended, including reducing sugar consumption through education and healthy lifestyle programs, extending sugarcane-harvested areas, and rejuvenating and building new sugar mill.JEL Classification: F14, C22How to Cite:Inayaturrohmah, W. P., Istiqomah & Gunawan, R.S. (2023). Determinant of Sugar Import. Signifikan: Jurnal Ilmu Ekonomi, 12(2), 275-286. https://doi.org/10.15408/sjie.v12i2.28044.
The Effect of Monetary Variable Shocks on Indonesian Portfolio Investment
Authors: Fuddin Muhammad Khoirul , Anindyntha Firdha Aksari
Published: October 2023

Monetary variables can affect portfolio investment in the short or long term. The previous studies rarely discuss the effects of monetary variables in the long and short term on portfolio investment. This study looks at monetary indicators that affect investment portfolios in Indonesia. The methodology used in this research is to use the Vector Error Correction Model (VECM) to see the response of several variables in the short and long term. The findings suggest that monetary policy should pay special attention to Indonesia's money supply (M2) and savings to influence portfolio investment in the short term. The monetary policy transmission mechanism can use the money and expectation channels to optimize monetary variables to control investment. Meanwhile, in the long run, monetary policy portfolio investment control needs to pay attention to interest rates and savings and adjust to the set inflation target, which can be used in the interest rate channel.JEL Classification: E21, E22, E43, E51, E52 How to Cite:Fuddin, M. K., & Anindyntha, F. A., (2023). The Effect of Monetary Variable Shocks on Indonesian Portofolio Invesment. Signifikan: Jurnal Ilmu Ekonomi, 12(2), 307-326. https://doi.org/10.15408/sjie.v12i2.31525.
Unlocking Inclusive Growth: The Impact of Shariah Investment in Indonesia
Authors: Indra Indra , Ibrahim Muhammad Yusuf
Published: October 2023

This study investigates the role of Shariah investment in Indonesia's inclusive growth. Shariah investment is measured in terms of Shariah stocks and sukuk. As determinants of inclusive growth, the study also includes several control variables adopted from separate literature, including the effect of COVID-19. In contrast to previous research, testing is conducted using a variety of inclusive growth metrics. Using principal component analysis (PCA) to compute the composite index of inclusive growth and time series regression models with monthly data at the national level from 2011 to 2022, this study finds three main conclusions. Evidence shows that Shariah investment contributes to inclusive growth in Indonesia, but the effects vary. Shariah stocks significantly affect poverty and unemployment, whereas Sukuk affects poverty and inequality. Both contributed to improving the Human Development Index (HDI) and inclusive growth. This study also revealed that COVID-19 was instrumental in reducing Indonesia's inclusive growth performance. This study complements prior empirical research on inclusive growth issues in Indonesia by examining the role of Islamic economics and finance. This research contributes to future policy initiatives to strengthen Indonesia's inclusive growth.JEL Classification: D24, O14, O4How to Cite:Indra & Ibrahim, M. Y. (2023). Unlocking Inclusive Growth: The Impact of Shariah Investment in Indonesia. Signifikan: Jurnal Ilmu Ekonomi, 12(2), 263-274. https://doi.org/10.15408/sjie.v12i2.31935
Does Financial Inclusion Affect Health Among Older Adults? Evidence from Indonesia
Authors: Abdurrahman Adnan , Haryanto Tri
Published: October 2023

While financial inclusion is widely acknowledged as a means to enhance the welfare of all ages, currently, there is no empirical research examining its effects on the health of older adults in Indonesia. This study, therefore, aims to fill the gap by investigating the impact of financial inclusion on the health of older adults in Indonesia using data from the March 2021 National SocioEconomic Survey (SUSENAS). The binary logistics regression was used to assess that effect. The findings reveal that financial inclusion positively benefits the health of older adults in Indonesia, highlighting the importance of policy-making that promotes financial inclusion programs to improve the health outcomes of older adults.JEL Classification: G2, I1, C31How to Cite:Abdurrahman, A., & Haryanto, T. (2023). Does Financial Inclusion Affect Health among Older Adults? Evidence from Indonesia. Signifikan: Jurnal Ilmu Ekonomi, 12(2), 327-340. https://doi.org/10.15408/sjie.v12i2.32001
Impacts of Covid-19 Pandemics and Wealth on Household Consumption in Java Island
Authors: Murti Prima Puspita Indra , Siregar Hermanto , Sugema Iman
Published: October 2023

Household consumption, which has changed due to the COVID-19 pandemic, can survive by using their wealth to restore consumption levels. The current research analyzes the impact of the COVID-19 pandemic and the role of wealth in household consumption in Java, which has the largest share of the economy. Using panel data from 119 regencies/cities in Java Island during the 2017-2021 period due to data availability shows that there have been changes in household consumption patterns during the pandemic. The results of the panel data analysis show that the COVID-19 pandemic has a negative effect on household consumption. In contrast, wealth positively affects household consumption in almost all provinces on the island of Java. These results suggest increasing asset ownership for households to maximize wealth, positively affecting household consumption, mainly when shocks occur.JEL Classification: D19, E21, H31How to Cite:Murti, P. P. I., Siregar, H., & Sugema, I. (2023). Impacts of Covid-19 Pandemic and Wealth on Household Consumption in Java Island. Signifikan: Jurnal Ilmu Ekonomi, 12(2), 371-382. https://doi.org/10.15408/sjie. v12i2.32336.
Socioeconomic and Demographic Causes of Crime Reporting in Indonesia
Authors: Rajagukguk Wilson
Published: October 2023

Studies on the nexus between socioeconomic and demographic factors and crime reporting are still limited in Indonesia. Therefore, this study aimed to investigate the socioeconomic and demographic causes of crime reporting in Indonesia using data from the results of the 2021 National Socioeconomic Survey. The data were analyzed using a binary logistic regression model. The unit of analysis was the population aged 15 years and older. The dependent variable was whether or not someone who experienced a crime reported it to the police. The independent variables were socioeconomic and demographic factors. The results of the study showed that a lower probability of reporting crime to the police was associated with being female, being younger, having higher educational attainment, living in urban areas, living in Java island, and working, implying the need to improve information, education, and communication on crime reporting among these groups.JEL Classification: A12, J19, K00, K39How to Cite:Rajagukguk, W. (2023). Socioeconomic and Demographic Causes of Crime Reporting in Indonesia. Signifikan: Jurnal Ilmu Ekonomi, 12(2), 413-424. https://doi.org/10.15408/sjie.v12i2.33436.