bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of direct-quadrature position and saturation of a SynRM machine with Segmented Rotor
Authors: Rasid Mohd Azri Hizami , Shahril Anwar M. 
Published: June 2023

The synchronous reluctance machine has gained popularity in traction and other smaller application thanks to its design that need very little or even no permanent magnet. Without internal permanent magnet assistance, an adequate level of torque density could be achieved by having an optimized rotor design to attain the optimum ratio of direct inductance over quadrature inductance. In order to properly control the machine, the direct and quadrature position need to be identified. In this study, a segmented rotor topology without permanent magnet was chosen. We evaluate the direct and quadrature position of the rotor topology, its saturation level and provide the flux linkage and the inductances of the machine.
Order parameters in Dicke model
Authors: Lyagushyn S. F. , Sokolovsky A. I. 
Published: June 2023

Dicke model provides describing the superradiance effect when the spontaneous emission of a great number of excited two-level atoms is running in a correlated way due to their interaction via field. The process is identical to a giant dipole emission. Since the ordering takes place, it is interesting to study the possibility for using the terms of phase transition theory in such physical situation. Equilibrium properties of Dicke type models were studied for a long time because of their relevance for explaining some phenomena in matter-field interaction. The existence of an ordered phase in the emitter subsystem together with macroscopic photon mode filling is established, wherein the correct solution requires the Bogolyubov concept of quasiaverages to exclude the phase uncertainty of quasispin component structures <R+> and <R-> (for the concentrated model). In this paper, the behavior of similar order parameters for the non-equilibrium process description is analyzed and using the order parameter <R+R-> associated with the squared electric dipole moment of the emitter complex is substantiated. Such fact justifies <R3> application in the literature devoted to the superradiance theory. The situation with quasiaverages is compared with the problem of uniformity breaking in the numerical modeling.
Polarization features of Bi12SiO20:Cr and Bi12SiO20:Mn crystals
Authors: Panchenko T. V. , Karpova L. M. , Potapovich Yu. N. , Trubitsyn M. P. 
Published: June 2023

The effect of impurity ions and polarization conditions on the dielectric characteristics and polarization features of Bi12SiO20 crystals doped with Cr and Mn ions is studied by dielectric spectroscopy in the sound frequency range and by thermoactivation spectroscopy in the temperature range 280 ÷ 800 K. The mechanisms of the observed phenomena are discussed at the atomic level.
Structure and properties of ion-plasma deposited films of CoCrFeMiMn high-entropy alloy
Authors: Kushnerov O. I. , Ryabtsev S. I. , Bashev V. F. 
Published: June 2023

High-entropy Co19Cr18Fe22Mn21Ni20 thin films were obtained by the modernized method of three-electrode ion-plasma sputtering of mosaic targets consisting of pure metals. The structure, electrical resistance, and magnetic properties of films were investigated. Single diffuse halo was seen on the XRD patterns of the as-deposited films, which confirms their amorphous structure. Some of the thin films, which were annealed at 900 K in a vacuum, were identified to be oxidized by a small amount of oxygen in the work chamber. After the heat treatment, the Co19Cr18Fe22Mn21Ni20 films were transformed from an amorphous state into a crystallized FCC solid solution with the lattice parameter a=0.3613 nm. Also, the cubic B2 phase of FeCo with a lattice parameter of 0.2857 nm was formed in the annealed films. As a result of oxidation processes, a dispersed phase of manganese oxide also arose after annealing. The temperature dependencies of electrical resistivity of films were measured by the four-point technique upon continuously heating in the high vacuum. Both as-deposited and annealed films clearly revealed a typical ferromagnetic behavior. The as-deposited high-entropy film exhibited the soft magnetic properties while the annealed films could be attributed to hard magnetic materials.
Sensitive element of an intellectual sensor (for measuring physical and chemical characteristics)
Authors: Kovalchuk V. , Mamuka K. , Smorgh M. 
Published: June 2023

The work is devoted to the development of a sensing element of an intellectual sensor for the creation of an analyser of meteorological characteristics. The use of such a sensor gives new opportunities for creating devices for portable gadgets controlled by a microcontroller. The practical application of such devices opens the possibility of correct analysis of air pressure, temperature, and humidity data in real time.
Visualizing hyperparathyroidism: A pictorial essay of Tc-99m MIBI parathyroid imaging across different etiologies
Authors: Buakhao Chanittha , Vachatimanont Sira 
Published: June 2023

AbstractParathyroid scintigraphy is an imaging technique that uses gamma-emitting radionuclide to locate hyperfunctioning parathyroid glands in patients with hyperparathyroidism. It is valuable for preoperative assessment before parathyroidectomy, which is a curative surgery in most cases of primary hyperparathyroidism and some cases of secondary hyperparathyroidism. There are several different techniques for parathyroid scintigraphy. In general, the scintigraphy is performed with Tc-99m MIBI, a mitochondria-targeting radiotracer. Some techniques also supply the Tc-99m MIBI scintigraphy with thyroid scintigraphy to differentiate between thyroid and parathyroid tissue. Parathyroid scintigraphy can detect primary hyperparathyroidism with a sensitivity of 80% and a specificity of 84%. It can also detect secondary hyperparathyroidism with a sensitivity of 58% and a specificity of 93%. The unique advantage of parathyroid scintigraphy is the ability to identify supernumerary and ectopic parathyroid abnormalities, which can significantly affect surgical planning and outcomes.
Piezoelectric based V-shape cantilever beam design of energy harvester for biomedical applications
Authors: Dewanjee Joy , Islam Md Shabiul 
Published: June 2023

AbstractThis research paper exhibits the design of a V-shaped cantilever beam as a micro Energy Harvester (EH) having Piezoelectric (PZT) as its energy source for biomedical applications. PZT source based materials have the ability to convert the mechanical energy into electrical energy. Low-power biomedical devices mostly operate using electrical energy (i.e. batteries). But batteries are treated as a bio-hazard due to the massive use of biomedical applications. To overcome this toxic bio-hazard, the proposed PZT based V-shaped cantilever beam of micro EH can solve the limitations. To perform the experimental work, the cantilever beam design parameters - length, width and thickness have been considered and simulated using COMSOL Multiphysics to get the resonant frequency of 156.19 Hz which is lower than previous research work. It was observed that the obtained lower resonant frequency can be converted into AC voltage (mV) using PZT material. To convert the output AC voltage (mV) into DC voltage, a circuit of an Ultra-Low-Power (ULP) EH will be designed in LTSPICE software. Finally, the integration of the both V-shape cantilever beam and the ULP EH circuit will be implemented in PCB hardware to generate the output power (10 µW), will be stored in super-capacitor for biomedical devices-pacemaker.
Consumo Online das Mulheres na Pandemia da Covid-19 no Brasil: Características e Influências
Authors: Assis Evange Elias , Rodrigues Maria Clotilde Perez 
Published: June 2023

O e-commerce que já mostrava uma curva ascendente nos últimos anos, com maior participação das mulheres, apresentou uma rápida aceleração nas vendas após o isolamento social causado pela Covid-19. O objetivo deste estudo é verificar os fatores que influenciam o consumo on-line das mulheres durante a pandemia da Covid-19. A pesquisa exploratória com abordagem qualitativa ocorreu em duas etapas. A primeira, consistiu na revisão teórica que subsidiou a segunda etapa, a pesquisa empírica, realizada com entrevistas em profundidade. Os resultados do estudo reforçam que a Covid-19 impactou de forma decisiva a compra no e-commerce e sugerem que os fatores de maior influência sobre o consumo online das mulheres durante a pandemia são: confiança, conveniência e preço. Indicação de pessoas conhecidas e comentários na internet sobre os produtos e marcas também foram considerados importantes para a tomada de decisão de compra online.
The influence of project management on the performance of projects to implement procedural improvements: A multiple case study.
Authors: Santos Manoela Pastor dos , Carvalho Marly Monteiro , Do Amaral Caio Senna , Berssaneti Fernando Tobal 
Published: June 2023

Purpose – Project management is well established in the literature as a useful methodology for planning, organizing, monitoring projects in order to ensure its completion. Improvement projects are internal initiatives within an organization that can originate from different sources, especially from the search for continued improvement. Theoretical framework – Within this context, the research will seek to understand what are the benefits and influences of Project Management when applied to these types of projects, using as a research method a multiple case study in two companies, in units in Brazil and the United States, in which interviews were conducted with professionals directly involved improvement projects within the organization. Design/methodology/approach – The data from the recorded interviews were transcribed, organized, grouped, compared and analyzed and the discussions and results are presented in the present study. Findings – Relevant findings are that Project Management, at first, provides companies with guidance on how to plan their improvement projects to better execute them, but none of the evaluated companies showed homogeneous adoption.Research, Practical & Social implications - Some of the limitations found in the present study are that only two companies of specific branches were evaluated.Originality/value – This article will seek to investigate what is the influence of the application of the project management methodology on the performance of procedural improvement projects, from its definition, to its planning, execution and observation of the results arising from the practice.Keywords - Project Management, Performance, Results, Processes and Improvement Projects.
Effect of melatonin on hematological indices in cyclophosphamide induced hematotoxicity in mice
Authors: Babatola Adefunke Olarinre , Onaolapo Olakunle James , Onaolapo Adejoke Yetunde 
Published: June 2023

Background: Cyclophosphamide use is often limited by associated hematotoxicity. This study investigated the effects of melatonin on haematological indices in cyclophosphamide-induced hematotoxicity in mice.
Methods: Ninety mice weighing between 20-25 gm were randomly divided equally into nine groups (A-I). Group A (saline control) received 2 ml/kg intraperitoneal (i.p.) normal saline with 10 ml/kg distilled water orally, groups B, C and D (melatonin control) received i.p. normal saline with melatonin at 5, 10 and 20 mg/kg orally, respectively. Group E (cyclophosphamide control) received 150 mg/kg/day i.p. cyclophosphamide with 10 ml/kg distilled water orally, while group F received 150 mg/kg/day cyclophosphamide with standard drug, (erythropoietin control) at 100 IU/kg. Group G, H and I (treatment groups) received 150 mg/kg/day cyclophosphamide with melatonin at 5, 10 and 20 mg/kg/day orally. Cyclophosphamide was administered on days 1 and 2 only, oral administrations occur once daily for 14 days. On day 15, animals were sacrificed and blood collected by cardiac puncture for assessment of haematological parameters; white blood cell count (WBC), red blood cell count (RBC) and platelets (PLT).
Results: The results showed a significant increase in WBC in groups C D, G and H (melatonin control; 10 mg/kg. 20 mg/kg and melatonin treatment; 5 mg/kg and 10 mg/kg) and a significant (p=0.001) decrease in group E (cyclophosphamide control) compared to A (saline control). RBC increased significantly in groups B and D (melatonin control; 5 mg/kg and 20 mg/kg) and significantly decreased in group E (cyclophosphamide control) compared to group A (saline control). Compared to group E (cyclophosphamide control), RBC increased significantly in groups F-I (erythropoietin standard, melatonin treatment). PLT increased significantly in groups B, C, (melatonin control; 5mg/kg and 10 mg/kg) G, H and I (melatonin treatment) compared with groups A (saline control) and E (cyclophosphamide control) (p=0.001).
Conclusions: Melatonin has potential to attenuate cyclophosphamide-induced hematotoxicity in mice.
Predictors and coping strategies for stress, anxiety and depression among medical undergraduates and postgraduates in Puducherry
Authors: Mangaiarkkarasi A. , Akshita K. 
Published: June 2023

Background: Higher proportion of medical students experience stress, anxiety and depression than compared to general population in Indian settings which are often underdiagnosed. This study aim was to assess the frequency, predictors and coping strategies of stress, anxiety and depression among the medical undergraduates and postgraduates of a tertiary care teaching hospital.
Methods: Questionnaire based online cross-sectional study was conducted among 350 medical undergraduates and post graduate students from June to July, 2021. Sociodemographic profile, questions from the depression, anxiety, stress scale-4 and details of coping strategies were collected. The data were analysed using SPSS 21.0 Descriptive statistics, Chi square test and Multinomial logistic regression analysis were used. P value <0.05 was considered statistically significant.
Results: The mean age of the participants was 21.5±3.1 years. Majority (63.1%) belonged to upper middle class. 92.3% joined the medical course with personal interest. The frequency of severe depression, anxiety and stress was 22.4%, 16.2% and 18% respectively. The frequency of extremely severe depression, anxiety and stress was 16.4%, 23.2% and 9% respectively. Acceptance, self-distraction and positive reframing were commonly followed coping strategies. Substance abuse and behavioural disengagement were the least followed. Significant association was observed between Emotion focused and avoidant coping with depression, anxiety and stress.
Conclusions: Higher frequency of depression (47.1%), anxiety (52.9%), and stress (38%), was observed among the students. Acceptance, positive reframing and self-distraction were commonly used coping strategies. Significant association seen with depression, anxiety and stress with emotion- focused and avoidant coping strategies.
Fukahâ Metodu Usûl Yazımının Ortaya Çıkışında Hilâfiyâtın ve Fıkıh Münazaralarının Rolü
Authors: YETKİN Hacer 
Published: June 2023

Fıkıh usûlü literatüründe fukahâ ve mütekellimîn metodu olarak nitelenen iki yazım yöntemi olduğuna dair yaygın bir kabul vardır. Bu iki yöntemin ayırıcı nitelikleri hakkında bazı açıklamalar dile getirilmekle birlikte, bu ayrımın hangi ölçülere göre yapıldığı, ayrışmanın temelinde hangi saiklerin olduğu ve bu yöntemlerin özellikle hangi dönemlerde yaygınlık kazandığı gibi hususlarda derinlikli bir izah mevcut değildir. Bu çalışma, söz konusu hususları biraz daha aydınlatmayı hedeflemekte ve özellikle fukahâ metodunun ortaya çıkışı üzerinde hilâf tartışmalarının ve münazaraların etkisi üzerinde durmaktadır.
İslamî ilimlerin ilk dönemlerindeki hararetli ilmî tartışmalarının önemli bir bölümünü dini bilginin kaynak ve yöntemlerine dair meseleler oluşturuyordu. Kelâm meseleleri ile ilgilenen alimler tarafından, kelâm meseleleriyle iç içe işlenen bu yöntem tartışmaları, sonrasında müstakil bir disiplin haline gelecek olan usûl meseleleriydi. Aynı dönemde Hanefîler de kendilerinin geliştirip sistemleştirdiği fıkıh çalışmalarını kayıt altına alarak, fıkıh ilminin ilk müktesebâtını tedvin ediyorlardı. Hanefîler kelâmcılar tarafından sürdürülen bu yöntem tartışmalarına, fıkıh mesâilinin temellendirilmesi bağlamında dahil oldular. İlk dönem ilimlerinin gelişmesinde etkili olan bu tartışma geleneği, cedel tekniğinin öğrenilmesi ile yeni bir boyut kazandı. Önce kelâmcılar ve sonra fakihler bu yöntemi tartışmalarında ve eserlerinde kullanmaya başladılar. Hicrî dördüncü ve beşinci asırda fıkıh ilminin revaç bulması ile birlikte fıkıh münazaraları entelektüel alanda çok daha yaygın ve önemli hale geldi.
Aynı doğrultuda ihtilaflı fıkıh meselelerinin delillendirilerek tartışıldığı hilâf literatürü de gelişme gösterdi. Söz konusu gelişmeler, hilâf mesâilinin delillendirilmesinde ve fıkıh münazaralarında işe yarayacak usûl eserlerinin ortaya çıkmasında etkili oldu. İşte fukahâ metodunun ilk ve en tipik eseri sayılan Debûsî’nin Takvîm’i, fürû fıkıh konusu sayılabilecek pek çok başlığa yer veren, tartışmaları bolca fıkıh örneği üzerinden işleyen, kıyas ve illet başlıklarında cedel bahislerini genişçe ele alan ve kelâm tartışmalarına mesafeli duran tarzıyla, dönemin münazara geleneğinin ihtiyaçlarına hitap ediyordu.
Debûsî’nin geliştirdiği bu usûl anlayışı kısa sürede dikkat çekti ve hicrî beşinci asır tamamlanmadan bu metodu benimseyen pek çok fıkıh usûlü eseri yazıldı. Özellikle Pezdevî’nin usûl eseri, sonraki Hanefî usûl literatüründe esas alınan model bir metin haline geldi. Gazâlî ve Râzî sonrasında İslamî ilimlerin felsefe ve mantık hakimiyeti altına girdiği dönemde ise fukahâ metodu popülerliğini yitirdi. İlmü’l-bahs ve’l-münazara ile cedel ilimleri mantık disiplini altında incelenmeye başlandı. Ancak bu dönemden sonra da bazı Hanefîler fukahâ metodu ile usûl eseri yazmaya ve felsefî kelâmın etkisi altındaki Hanefîler dahi yazdıkları karma nitelikli eserlerde Pezdevî’nin Usûl’ünü esas almaya devam ettiler.
Exploring effects of initial water content of recycled aggregate and additional water consumption on the permeability resistance of concrete to chlorine salt
Authors: Duan Zhenhua , Li Julun , Xiao Jianzhuang , Huang Tianyong 
Published: June 2023

Recycled aggregate concrete (RAC) technology is conducive to resource conservation and environmental protection, but the high-water absorption of recycled aggregate makes it difficult to control the durability of RAC. In this study, the combined effects of initial moisture and additional moisture of recycled coarse aggregate (RCA) on the resistance to chloride ion penetration of concrete were investigated. The results show that, when the initial humidity of RCA is lower than 0.25 and the additional water consumption is low, RAC shows a rapid decay of dynamic elastic modulus. In contrast, when the sum of initial water content and additional water content is greater than 80%, the higher the initial water content, the better the compactness and impermeability of concrete. At the same time, the initial water and additional water of RCA have a great impact on the quality of RAC and the depth of damage layer. When the initial water content of RCA is high, the corrosion resistance of RAC decreases with the increase of the additional water. After comprehensive consideration, it is recommended to use RCA with 50% initial water and less than 40% additional water to obtain good durability.
Pendekatan Holistik Pembayaran Uang Kembalian dengan Non-Rupiah dalam Kerangka Hukum Perjanjian Syariah, Pidana dan Implikasinya terhadap Perlindungan Konsumen
Authors: Musataklima  
Published: June 2023

Penggunaan uang koin dalam transaksi bisnis mengalami penurunan, di berbagai daerah tidak terkecuali di Malang. Penelitian ini bertujuan untuk mendeskripsikan pertama, rendahnya efektivitas penggunaan Rupiah sebagai alat pembayaran uang kembalian; aspek pidana, penyebab dan solusinya. Kedua, Aspek hukum perjanjian syariah, dan ketiga, implikasinya terhadap hak konsumen. Penelitian ini merupakan penelitian empiris dengan pendekatan yuridis sosiologis, yang bertumpu kepada data primer yang didapat melalui wawancara, selain data primer, data sekunder juga dibutuhkan dalam penelitian ini yang didapat melalui studi dokumen dan kepustakaan. Semua data ini dianalisa secara deskriptif kualitatif. Hasil penelitian ini adalah, pertama, tidak digunakannya rupiah sebagai alat pembayaran uang kembalian merupakan tindakan pidana yang disebabkan (1) norma hukumnya mandatur, (2) kultur masyarakat yang cenderung tidak menghargai koin. Solusinya adalah sosialisasi melalui klinik konsumen cerdas dan gerakan peduli koin nasional. Kedua, pembayaran uang kembalian dengan barang dalam hukum perjanjian syariah tidak ditemukan pertemuan kehendak sehingga cacat kehendak. Ketiga, implikasinya mengakibatkan hak konsumen untuk dilayani dengan benar dan jujur tercederai. (The use of coins in business transactions has decreased in various regions, including Malang. This study aims to describe: first, the low effectiveness of using the Rupiah as a means of payment for change; the criminal aspects, causes, and solutions. Second, the legal aspects of sharia agreements, and third, the implications for consumer rights. This research is an empirical study with a sociological juridical approach, which relies on primary data obtained through interviews. Besides, this study uses secondary data obtained through documents and literature studies. All of these data were analyzed descriptively and qualitatively. The results of this study are: first, the non-use of the rupiah as a means of payment for change is a criminal act caused by (1) the mandatory legal norms, (2) the culture of people who tend not to value coins. The solution is socialization through smart consumer clinics, and movements care about national coins. Second, payment of change with goods in the Sharia agreement law doesn't meet the will, so it is defective to the will. Third, the implication is that the consumer's right to be served appropriately and honestly is harmed.)
KONSUMSI, AKTIVITAS FISIK, STATUS GIZI ANAK SEKOLAH DASAR PADA MASA PANDEMI COVID-19
Authors: Trinursari Sindi , Sulistiyani Sulistiyani , Ratnawati Leersia Yusi 
Published: June 2023

Masa pandemi Covid-19 telah terjadi perubahan pada pola konsumsi dan pola aktivitas anak, status gizi dapat dipengaruhi oleh konsumsi dan aktivitas fisik. Status gizi baik berperan dalam mempertahankan tingkat kesehatan dan membantu proses pertumbuhan anak. Penelitian ini bertujuan untuk menganalisis hubungan antara tingkat konsumsi dan aktivitas fisik anak sekolah dasar (SD) negeri dengan status gizi selama masa pandemi Covid-19 di Kecamatan Bondowoso. Penelitian cross-sectional ini dilakukan di tiga sekolah sekolah di Kecamatan Bondowoso yang berjumlah 77 sampel pada bulan Agustus hingga September 2021 menggunakan teknik simple random sampling, kemudian dilanjutkan dengan pengolahan dan analisis data pada bulan Oktober 2021. Tingkat konsumsi diperoleh dengan wawancara secara langsung menggunakan Recall 2x24 jam, aktivitas fisik menggunakan The Physical Activity Questionnaire for Older Children (PAQ-C) dan status gizi pada masa pandemi diperoleh melalui pengukuran tinggi badan dan berat badan secara langsung, sedangkan status gizi sebelum pandemi menggunakan data sekunder. Hasil penelitian dengan tigkat konsumsi dan aktivitas fisik sebagai variabel bebas serta status gizi sebagai variabel terikatnya ini menunjukkan bahwa terdapat hubungan antara tingkat konsumsi protein (nilai p=0,013) dan aktivitas fisik dengan status gizi anak sekolah dasar (nilai p = 0,017) pada masa pandemi Covid-19. Saran yang dapat diberikan yaitu membiasakan untuk tidak melewatkan sarapan sebelum berangkat sekolah, untuk mengkonsumsi makanan yang mengandung protein sesuai dengan kebutuhan supaya status gizi dan pertumbuhan tetap terjaga, serta menganjurkan anak untuk tetap melakukan aktivitas fisik setidaknya 30 menit/hari.