bluuebunny/crossref_metadata_2025 huggingface dataset:
Flight Testing of Coupled Flight Controls toward Reducing Pilot Workload during Landing in DVE
Authors:   US Army CCDC AvMC, LUSARDI JEFFERY , Fujizawa Brian , Cleary Mark
Published: July 2023

Landing helicopters in Degraded Visual Environments (DVE) is one of the most challenging maneuvers pilots perform. The U.S. Army Combat Capabilities Development Command, Aviation & Missile Center, Aviation Development Directorate has been working to develop flight guidance and sensor systems to provide the pilot with guidance and pilot cueing to land a helicopter, hover, and take off in DVE. During flight testing of the Brown Out Symbology System (BOSS) on an EH-60L Black Hawk, pilots reported very high workload requiring full concentration on the displays during approaches to landing in brownout. In order to reduce pilot workload, an approach to provide the pilot with a collective tactile cue based on coupling of the output of the approach to landing algorithms to the EH-60L collective trim servo was developed and flight tested. Flight testing of the coupled collective system demonstrated a reduction in pilot workload and increase in the pilot's situational awareness during landing in brownout. To further reduce pilot workload, the pilot cyclic and pedals have been coupled with the guidance symbology to allow for fully coupled landings. Details of the system are provided along with the initial results of flight testing of the system at Felker Army Airfield, Ft. Eustis VA.
MPPI Parallel Trajectory Optimization for Guidance in Rotorcraft Shipboard Landing
Authors:   Georgia Institute of Technology, Comandur Vinodhini , Walters Robert , V. J.
Published: July 2023

Rotorcraft shipboard landing is one of the most challenging operations for rotorcraft pilots owing to the workload associated with the task, which can be attributed to a variety of environmental conditions like random ship motion, heavy sea states and unsteady aerodynamic conditions. This paper explores the effectiveness of Model Predictive Path Integral (MPPI) approach, a stochastic optimal control method, for parallel trajectory optimization as a guidance solution to the rotorcraft shipboard landing problem. Specifically, the computational efficiency for real time guidance solutions afforded by the MPPI approach in comparison to its sequential counterpart is evaluated. Furthermore, a sensitivity analysis of MPPI parameter selection on its performance is carried out. The performance of the developed MPPI algorithms for real time guidance in helicopter ship board landing is demonstrated using nonlinear model simulations of a helicopter executing a symmetric landing profile aligned with the ship deck centerline.
Handling Quality Analysis and Control Design using Polynomial Chaos Model-based Uncertainty Methods
Authors:   Barron Associates Inc., Cooper Jared ,   Systems Technology Inc., Klyde David , DeVore Dr. , Reed Adam
Published: July 2023

This article demonstrates application of a probabilistic analysis facility called AURA to rotary-wing control and handling-qualities problems. It is based on a Generalized Polynomial Chaos approach to compute and reason over probabilistic quantities. The AURA software has interfaces to both SIMULINK and MATLAB and bindings to other programming languages. It can model arbitrary random distributions and has the potential to fully represent the effects of the uncertainty with a single simulation run. Modeling and analyzing rotorcraft flight dynamics, handling-qualities, performance, structural loads, and design requires sophisticated tools to capture the complex physical phenomena germane to their operation. Present and future rotorcraft operational requirements demand the vehicles perform in new and increasingly austere environments. In the design and maintenance of such complex systems, there are associated uncertainties from either internal processes or environmental factors that affect the performance and stability of the system. Traditionally, uncertainties are treated as Gaussian random variables and their impact assessed using Monte Carlo techniques. This approach has proven successful but requires numerous simulation runs and approximations regarding the true distribution of the uncertainty, and there is no guarantee that Monte Carlo techniques provide comprehensive coverage of the uncertainty space. AURA is designed to help bridge these gaps in an environment that treats arbitrary random sources in an intuitive manner. This article briefly outlines the approach and demonstrates applications to rotorcraft control and handling-qualities analysis.
Flight Test Assessment of the Break Turn and High-Speed Acceleration/Deceleration Mission Task Elements using a UH-60M Black Hawk
Authors:   US Army CCDC AvMC, Berger Tom , Carl LTC , Cox Jeffrey , M. Paul , Wood John
Published: July 2023

Since it was first adopted in 1987, Aeronautical Design Standard ADS-33 has been through four major revisions, and the Mission Task Elements (MTEs) used to qualitatively assess aircraft handling qualities have been expanded to cover scout, attack, utility, and cargo missions. However, even the current version of ADS-33 (ADS-33E-PRF) focuses on the hover/low-speed flight regime with limited coverage of high speed (140-150 kts) and conventional rotorcraft configurations. The ADS-33E MTEs are based on legacy vehicles and were developed at an early stage of rotorcraft fly-by-wire technology. The U.S. Army National Rotorcraft Technology Center recently completed a multi-year project to develop MTEs for future high-speed configurations and missions using a series of simulation studies. This paper documents a flight test assessment of two high-speed MTEs - Break Turn and High-Speed Acceleration/Deceleration - using a UH-60M Black Hawk. The MTEs were deemed suitable for assessing high speed handling qualities of the UH-60M. The results of the flight test provided recommended updates to the task descriptions and course cueing requirements, and helped validate the desired and adequate task performance tolerance.
Flight Test Vehicle for Determination of Multi-Rotor UAV Trim Conditions
Authors:   Ohio State University, Singhal Achal , Thorpe Ryan , McCrink Matthew , Gregory James
Published: July 2023

Multi-rotors are quickly becoming affordable research tools in many fields. However, rich empirical data sets linking aircraft performance to aerodynamic factors are not readily available. This research effort uses a simple quadrotor frame, a Pixhawk and a custom data acquisition system to log trim data composed of both flight attitude and motor performance data. The trim data is collected during field tests under hovering and yawing maneuvers. Motor performance data responded correctly with vehicle motions and pilot inputs proving the efficacy of the data acquisition system. Considerable attention to vehicle construction and sensor health is needed to produce repeatable motor performance data. In particular, the thrust load cells used in this work were not very well suited to the high vibration and crash prone environment of flight testing. Upgrading vehicle components and sensors should yield an aircraft capable of generating trim data sets for most flight scenarios.
Enabling Technology for Sustainment of Navy Aircraft Structures
Authors:   US Naval Air Systems Command, Semidey Roberto , Glucksman-Glaser Mark , Phan Nam
Published: July 2023

The Structures Division at the Naval Air Systems Command (NAVAIR) continues to support capital investment in enabling technologies for sustainment of our aircraft which will lower total life cycle costs, ensure safety, and increase operational readiness. This paper presents a general overview of the major improvements which have been made in the area of Structural Health and Usage Management (SHUM), including: usage severity monitoring via regime recognition (RR), gross weight and center of gravity (GW/CG) estimation, local/global damage detection, environmental effects monitoring, damage alleviation, prognostication, and individual asset/component tracking (IAT). Advances in structural analyses have been made in the accuracy of predicted rotorcraft loads using coupled rotor and fuselage interactions. Innovative approaches to fatigue testing at both the component and full scale airframe levels will allow for more accurate introduction of vibratory loading content from operation, reveal failure modes, and improve fatigue life predictions. Additive manufacturing (AM) of fly-away aircraft parts and the standardization of cold spray repair applications present unique qualification challenges and benefits to the warfighter.
Evaluating Analysis Methods for Legacy HUMS Data
Authors:   IMP Aerospace and Defence Canada, Edmonds Anthony , Muise Aaron , Glasgow Rowena
Published: July 2023

The Canadian Search & Rescue (SAR) CH149 Cormorant helicopter, a variant of the AgustaWestland EH-101, entered service for Canada in 2002, equipped with a Health and Usage Monitoring System (HUMS). While HUMS continue to advance and provide increasingly refined solutions, HUMS-equipped aircraft procured before the maturation of these systems require consideration of novel approaches to maximize the benefit of legacy data. Continued regulatory compliance necessitates ongoing innovation and continuous improvement. On the CH149 Cormorant fleet, this is achieved primarily through the refinement of monitoring methods and the expansion of monitoring scope. This paper builds on work presented at Forum 72, further elaborating on the exploitation of HUMS data in support of the CH149 fleet and the various methods that have been developed to address the limitations of the available HUMS data. Innovations have included developing novel methods for post-process analysis of HUMS data. These methods are leveraged against known fleet maintenance issues and evaluated for effectiveness.
Uncertainty Quantification of Guided Waves Propagation for Active Sensing Structural Health Monitoring
Authors:   Rensselaer Polytechnic Institute, Ahmed Shabbir , Kopsaftopoulos Fotis
Published: July 2023

Guided-wave-based acousto-ultrasound structural health monitoring (SHM) methods have attracted the interest of the SHM community as guided wave scan travel long distances without significant dissipation and are capable of detecting small damage sizes of several types. However, when subject to changing environmental and operational conditions (EOC), guided-wave-based methods may give false indications of damage as they exhibit increased sensitivity to varying EOC. In order to improve the reliability and enable the large-scale applicability of these methods, and to build a robust SHM system, it is necessary to quantify the uncertainty in guided wave propagation due to changing EOC. In this paper, a rigorous investigation on the uncertainty involved in the propagation of Lamb waves due to the variation in temperature and material properties of nominally-identical structures has been performed both numerically and experimentally. A high fidelity finite element model is established to study the effect of small temperature perturbation on the S0 and A0 modes of Lamb waves and the associated uncertainty is quantified. Then experiments are performed under ambient laboratory temperature variations during an eleven day period. The experimental results have indicated that temperature variations as small as 0.5 0C may result variations in the amplitude of Lamb waves and affect the damage index. Then uncertainty due to the variation in material properties has been considered by taking into account the statistical Gamma distributed dependency between Young’s modulus and Poisson ratio jointly and the associated variation in the damage index is also investigated.
Metastatic choroidal melanoma in the breast: a case report and review of the literature
Authors: Abudalu Loay , Malhotra Vinisha , Nasir Nabila , Titi Sami
Published: July 2023

The breast is an unusual site for metastases, accounting for less than 2% of malignant breast lesions but include those from malignant melanomas, carcinomas, sarcomas, and lymphomas from various organs. We diagnosed a very rare case of metastatic choroidal melanoma for a 67-year-old female who presented with a right breast lump and who had been previously diagnosed with choroidal melanoma-monosomy 3 in 2017. To the best of our knowledge, only five such cases have been published so far, with one in a male patient.
Evaluation of Distance Education and Formal Education on Architectural Design Studio Practices and Student Perception with Comparative Analysis: Antalya Bilim University
Authors:   Antalya Bilim University, Faculty of Fine Arts and Architecture, Architecture, Antalya, Turkey, Erturk Serpil Fatma , Ucar Setenay ,   Antalya Bilim University, Faculty of Fine Arts and Architecture, Interior Architecture and Environmental Design, Antalya, Turkey
Published: July 2023

Due to the worldwide Covid pandemic in 2020, it has undergone compulsory in universities, including distance education architectural education. Universities in Turkey were affected by Covid too, with the decrease of the pandemic effect, even though it has been back to formal education, an earthquake occurred and affected 10 cities in Turkey, causing to passed of distance education again. In the 2023 period, the process; continued as a hybrid, both remotely and face-to-face. Also, the design studio culture, which is the backbone of architectural education, evolved with the changes in the distance education process of components such as drawing, sketches, and the desk critiques tradition of architectural practice. In this sense, the study aims to create a base for a provision for the future of architectural education with student-centered assessments. The research comparatively evaluates the effects of distance education and formal education on architectural studio practices through course evaluation questionnaires applied to students and student comments. In this study, the questionnaires and comments filled by approximately a total of 120 students for each term between 2018-2022 within the Department of Architecture of ABU were analyzed. To determine the points where students get the most efficiency and feel inefficient; Both positive and negative outcomes were observed, including difficulties with the concepts of proportion and scale, the benefit of being able to view other students' projects online, and the chance to continue learning additional modeling and drawing software until graduation. This example shows how hybrid education for the architectural design studio can be evaluated when weighing the benefits and drawbacks of online learning versus face-to-face teaching.
ՄԻՋՆԱԴԱՐՅԱՆ ՀԱՅ ՓԻԼԻՍՈՓԱ ԳՐԻԳՈՐ ՏԱԹԵՎԱՑՈՒ ՀՈԳԵԲԱՆԱԿԱՆ ՀԱՅԱՑՔՆԵՐԸ
Authors: Զաքարյան Սեյրան
Published: July 2023

Հոդվածում վերլուծվում են միջնադարյան նշանավոր հայ աստվածաբան-փիլիսոփա Սուրբ Գրիգոր Տաթևացու  /1346-1409/ հոգեբանական հայացքները։ Հեղինակ կարծիքով՝ Տաթևացին որպես սքոլաստիկ մտածող ընդհանրապես տարբեր, մասնավորապես հոգուն վերաբերող հարցերի քննարկման ժամանակ ձգտում է համադրել  կրոնաաստվածաբանական ու փիլիսոփայական դրույթները։ Տաթևացին մի կողմից մերժում է մարդուն իր հոգու հետ նույնացնող պլատոնյան  և մարդուն միայն մարմին ներկայացնող նյութապաշտական, իսկ մյուս կողմից՝ մարդուն երկու առանձին բնությամբ ներկայացնող դուալիստական տեսակետները։ Մարդը հոգու և մարմնի միասնություն է, և թեև դրանք իրենց բնությամբ, հատկություններով և դերակատարումներով տարբեր են, սակայն  կազմում են մեկ միասնական բնություն։ Թեև նա արժեքային առումով առավելությունը տալիս է հոգուն, այնուհանդերձ, կարծում է, որ մարդը կատարյալ է հոգու և մարմնի միասնությամբ և հոգու ու մարմնի հարաբերությունը պետք է խարսխված լինի արդարության սկզբունքի վրա։ Հայ մտածողը, հակադրվելով հոգու և մարմնի արժևորման հարցում ծայրահեղ  տեսակետներին (պլատոնական, ճգնավորական), որոնք մարմինը համարում են մեղքի և չարիքի պատճառ, պաշտպանում է հոգու և մարմնի միասնության արիստոտելյան մոտեցումը, ինչը նշանակում է մարմնի «իրավունքների»  փաստացի ճանաչում և մարդու փրկության գործում դրա դերի կարևորում։
Desde la pedagogía del oprimido a la pedagogía de la autonomía: la alfabetización y el letramento como emancipación del sujeto
Authors: Gobi Isadora , Moro Valderesa , Jung Hildegard Susana , Quaresma da Silva Denise Regina
Published: July 2023

Este artículo aborda el camino del sujeto desde la Pedagogía del Oprimido hasta la Pedagogía de la Emancipación a través del proceso de alfabetización y de letramento. El objetivo es investigar el proceso necesario para la formación continua del profesor en su propia emancipación pedagógica para conducir a los alumnos en el proceso de alfabetización y letramento como emancipación personal. La metodología tiene un enfoque cualitativo y consiste en una investigación bibliográfica sobre el tema propuesto, utilizando como principal aporte teórico Freire (2006, 2011) y Ausubel (2000). El análisis de los datos se realizará en base a Bardin (2016). Los resultados indican que, para un proceso de emancipación del sujeto por la alfabetización y letramento, en la visión de Paulo Freire, es necesario invertir en los siguientes aspectos: a) la formación continua de los profesores que trabajan con los alumnos; b) el desarrollo de propuestas dirigidas al aprendizaje significativo; c) el vínculo entre profesor-alumno, respetando los conocimientos previos de cada sujeto y utilizándolos como forma de aprendizaje.
SOIL SALINITY SHIFTS CULTIVABLE MICROBIAL COMMUNITIES OF WHEAT (Triticum turgidum subsp. durum) RHIZOSPHERE IN THE YAQUI VALLEY, MEXICO
Authors: Ibarra-Villarreal Arlett Leticia , Rojas-Padilla Jonathan , Chaparro-Encinas Luis Abraham , Díaz-Rodríguez Alondra María , Valenzuela-Ruiz Valeria , Herrera-Sepúlveda Angélica , Parra-Cota Fannie Isela , De los Santos Villallobos Sergio
Published: July 2023

Saline soils are a common issue in commercial fields using intensive and irrigated agricultural practices under arid or semi-arid climates, such as the Yaqui Valley in Mexico, one of the most important wheat-producing regions worldwide. This study aimed to assess the cultivable microbial diversity (having plant growth-promoting attributes) associated with wheat rhizosphere in commercial fields, under a saline soil gradient in the Yaqui Valley. Thus, seven wheat commercial zones were studied according to their electrical conductivity (0.9 to 6.4 dS cm-1). The isolation of microorganisms was carried out by dependent culture techniques, sequencing of the  16S (bacteria) and 5.8S (fungi) rRNA genes , and plant growth-promoting attributes were evaluated: phosphate solubilization (Pikovskaya medium), siderophore production (Chrome Azurol S medium), indole production (Salkowsky reagent), and hemolytic activity (Petri dishes 5 % Sheep Blood). Wheat commercial zones with 1.6 dS m-1 showed the highest fungal (2.59 x 106 CFU g-1 dry soil) and bacterial (2.88 x 107 CFU g-1 dry soil) populations, being Rhizopus and Bacillus the most abundant and well-distributed microbial genera, respectively. The impact of saline soils on the microbial metabolic background was not species- or genus-specific; it was at a strain-specific level. In addition, 52 % of fungal and 83 % of bacterial strains showed the ability to produce γ-hemolysis, suggesting it is not harmful to humans and animals. This work provides a microbial culture collection where their members have shown several beneficial traits that potentially increase the yield and quality of wheat growing under saline soil conditions.
RAINFALL AND RUNOFF RELATIONSHIP FOR DETERMINATION OF WATER ABSTRACTION POTENTIAL OF RIVER OSUN, SOUTHWESTERN, NIGERIA
Authors:   Department of Civil Engineering, Ajayi Crowther University, Oyo, Oyo State, Nigeria, A.T. Adeyokunnu,
Published: July 2023

The hydrological regime is characterized by high variability of rainfall and runoff distribution. The hydrologist finds it difficult to make accurate prediction of water abstraction by various dams. Inspite that Osun is blessed with abundant water resources being one of the states that supplier water to resident in Osun state, water supply is made inadequate due to lack of schedule of water by facilities abstracting water from the river. In this study, the Rainfall-Runoff Relationship for Determination of Water Abstraction Potential of River Osun was investigated. The model developed was a linear regression approach considering effects of past rainfall on the runoff of the effluent streams. Forty (40) years rainfall data collected from 1974 – 2012 were used to estimate corresponding runoff using empirical approach. The rainfall were repressed against runoff and the corresponding runoff arrived at regression coefficient of 0.912 and 0.896 respectively. Generated runoff for River Osun were determined. The data could serve as a veritable hydrological input in the allocation of water for the dams abstracting water on the river. It is recommended that to find a lasting solution to the menacing frequent lack of water by dams abstracting water on River Osun.
Use of Practicum Learning Methods in Improving Learning Outcomes
Authors:   Universitas Kristen Indonesia & Mayjen Sutoyo No.2, Cawang, East Jakarta, Indonesia, Sormin Elferida
Published: July 2023

The purpose of this research is to find out whether the application of practicum methods can improve learning outcomes as well as to know how much the increase in chemistry is learning outcomes that are taught using the practicum method. The research method used in this study is a quasi-experimental design with two groups, a pretest and a post-test. Sample In this study, there were 56 students in class XI of 28 students as an experimental class and 28 students as a class control taken by purposive sampling technique. The research result shows that the significance value (Sig.) in the experimental class as well as in the control class of 0.000 is less than 0.05 (0.000 < 0.05). This means that practical and conventional methods, each used in the experimental and control classes, had a significant effect on students' chemistry learning outcomes. But based on analysis gain value, it is known that there was an increase of 31% in the class experiment and 12% in the control class. It can be concluded that increasing learning outcomes in the experimental class that apply the practicum method is better than the control class.
Nonsyndromic Deafness Due to A Peculiar Compound Heterozygous Genotype of Novel Nonsense and Missense CEACAM16 Variants
Authors:   Clinical Genetics Service, Hospital La Zarzuela & Hospital San Rafael, Madrid, Nogueira Enrique , delOlmo Beatriz ,   Molecular Diagnostics, Eurofins-Megalab, Madrid
Published: July 2023

A peculiar compound heterozygous genotype of gene CEACAM16 associated to non-syndromic hearing loss (NSHL) is reported, of two novel variants of terminal IgV-like domain N2 domain of CEACAM16, different in nature, nonsense p.Trp370Ter and missense p.Ala375Thr, that would have a pathogenic effect (hearing loss) by impairing the interaction of CEACAM16 with other prominent glycoproteins, mainly with TECTA and TECTB, introducing structural changes in the tectorial membrane (TM) of the organ of Corti.
PEMERIKSAAN KESEHATAN DAN EDUKASI JANTUNG SEHAT DI MASA PANDEMI COVID-19 DI DESA TALAGASARI
Authors: Umara Annisaa Fitrah , Putri Adhe Tri , Salsabilla Salsabilla , Harista Dela Eka , Septianingsih Reni , Hertiantara Refa , Ulumudin Muhammad , Gustiani Devi , Alfrida Shahnaz , Nujula Nafa Firdaus
Published: July 2023

Penyakit kardiovaskular adalah penyebab utama kematian secara global. Di Indonesia kasus masih tergolong tinggiterutama di Banten. Penyakit jantung menjadi salah satu komorbid COVID-19 dengan risiko mortalitas yang lebihtinggi. Tujuan pengabdian masyarakat ini ialah dilaksanakannya pemeriksaan dan edukasi kesehatan jantung di masapandemi COVID-19. Kegiatan dilakukan dengan pemeriksaan dan edukasi diberikan kepada 12 orang warga dengancara door to door. Pemeriksaan kesehatan meliputi pengukuran tekanan darah dan kadar GDS. Edukasi tentang caramenjaga kesehatan jantung di masa pandemi COVID-19 dilakukan secara personal menggunakan media leaflet. Hasilpemeriksaan kesehatan didapatkan sebanyak 8 orang (66,67%) memiliki tekanan darah tinggi dan 1 orang denganGDS >200 mg/dL.Edukasi kesehatan jantung di masa pandemi COVID-19 sangat penting khususnya bagi wargamemiliki komorbid. Saran kegiatan selanjutnya untuk memperluas jangkauan pemeriksaan kesehatan dan pemberianedukasi
PENINGKATAN PENGETAHUAN ANAK USIA DINI MELALUI SOSIALISASI MAKANAN BERGIZI MENGGUNAKAN MEDIA ALAT PERAGA SAYUR DAN BUAH
Authors: Eka Putri Gusliani , Dasril Oktariyani , Angelia Inge , Elsa Fitri Wiya , Trisnadewi Eliza , Handayani Sri , Novita Sary Annisa , Yulia Inelvy
Published: July 2023

Anak- anak usia pra sekolah banyak mengalami masalah kekurangan gizi. Kondisi kekurangan gizi pada anak-anak dapat menghambat perkembangan fisik, kesehatan dan mentalnya. Pengabdian kepada masyarakat ini dilakukan di TK IT Darel Iman 2, di Kota Padang. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pengetahuan anak-anak tentang buah, sayur dan proses pencernaan makanan dalam tubuh. Metode yang digunakan yaitu sosialisasi dengan menggunakan alat peraga buah, sayur dan phantom kesehatan. Pengukuran peningkatan pengetahuan dilakukan dengan cara wawancara kepada anak-anak seputar materi sebelum dilakukanpenyuluhan (pretest) dan dilanjutkan wawancara setelah penyuluhan (posttest). Hasil pengukuran pengetahuan pretest dan posttest dianalisis dan didapatkan nilai signifikansi 0,0018 sehingga (p < 0,05) dan disimpulkan bahwa terdapat peningkatan pengetahuan sebelum dan sesudah dilakukan sosialisasi.
Analisis Likuiditas Dan Leverage Terhadap Kinerja Keuangan Dengan Manajemen Asset Sebagai Variabel Pemoderasi Pada Sektor Transportation And Logistic K1 Transportation Yang Terdaftar Di Bursa Efek Indonesia (BEI) Periode 2017-2021
Authors: Putri Vella Ozia , Arjuniadi Arjuniadi , Ramzijah Ramzijah
Published: July 2023

Penelitian ini bertujuan untuk menguji dan menganalisis variabel independen Likuiditas dan Leverage terhadap variabel dependen Kinerja Keuangan dengan Manajemen Asset sebagai variabel pemoderasi. Populasi dalam penelitian ini adalah seluruh perusahaan sektor transportation and logistic k1 transportation yang terdaftar di bursa efek indonesia (BEI) periode 2017-2021. Teknik yang digunakan untuk pengambilan sampel adalah purposive sampling. Sampel dalam penelitian ini adalah perusahaan sektor transportation and logistic k1 transportation periode 2017-2021 dan yang menerbitkan laporan keuangan setiap tahunnya. Berdasarkan kriteria jumlah sampel yang diambil hanya 10 perusahaan. Analisis yang digunakan dalam penelitian ini adalah analisis linear berganda dengan menggunakan SPSS.Hasil penelitian ini menunjukkan bahwa : (1) Likuiditas berpengaruh positif dan signifikan terhadap Kinerja Keuangan. (2) Leverage  berpengaruh positif dan tidak signifikan terhadap Kinerja Keuangan. (3) Manajemen Asset sebagai variabel moderating dengan variabel Likuiditas mampu mempengaruhi secara signifikan hubungan antara Likuiditas terhadap Kinerja Keuangan. (4) Manajemen Asset sebagai  variabel moderating dengan variabel Leverage mampu mempengaruhi secara signifikan hubungan antara Leverage terhadap Kinerja Keuangan. Nilai koefisien determinasi persamaan 1 sebesar 0.399 atau 39.9%, persamaan 2 sebesar 0.431 atau 43.1% dan persamaan 3 sebesar 0.695 atau 69.5 %. Angka tersebut menunjukkan bahwa variabel dependen yang digunakan dapat dijelaskan oleh  variabel Likuiditas, Leverage dan Manajemen Asset sedangkan sisanya pada persamaan 1 sebesar 60.1%, persamaan 2 sebesar 59.9% dan persamaan 3 sebesar 30.5% dijelaskan oleh faktor – faktor yang lain yang dianggap tetap yang tidak dimasukkan ke dalam model regresi.  Kata Kunci: Likuiditas, Leverage, Kinerja Keuangan  dan manajemen asset
Innovative Formulation and Characterisation of Grease Made from Waste Engine Oil
Authors: Hairunnaja Muhammad Auni , Abd Aziz Mohd Aizudin , Abdu Rahman Nurul Waheeda , Arifin Mohd Azmir , Md Isa Khairuddin , Md Ali Umi Fazara
Published: July 2023

Lubricating grease is usually produced from mineral oil, making the relationship between grease and mineral oil unavoidable. Formulation of grease from waste oil can reduce the dependency of the grease industry on mineral oil as well as help to reduce the waste generation of used oil. This study aims to produce fumed silica (FS) grease from waste engine oil (WEO) and analyse the properties of the formulated grease. The method started with treating WEO to remove any contaminants in the used oil. After that, the greases are produced using a weight percentage ratio before being examined for consistency, oil separation, oil bleeding, FTIR (Fourier transform infrared spectroscopy) analysis, and corrosiveness. In terms of uniformity, oil separation, and oil bleeding, WEO percentage content had a substantial impact on the findings. The FTIR demonstrated that synthetic greases had the same spectra when evaluated between 500 cm-1 and 4000 cm-1. The grease's corrosiveness is low, as determined by class 1 corrosiveness toward the copper strip. However, the grease properties differ when consistency, oil bleeding and oil separation test is done. Higher oil content in grease produced high oil bleeding and separation but low consistency. As a conclusion of the results, fumed silica grease with oil percentages of 83 and 82 have the most grease-like features, showing that the grease fits the traits' requirements. Based on the investigation's findings, it was established that WEO may be used as a base oil in grease formulation and that the grease's properties are satisfactory.
Exploring the Potential of Augmented Reality (AR) and Virtual Reality (VR) in Education
Authors: Shaikh Mohammed Shaukat
Published: July 2023

The integration of technology into education has revolutionized traditional learning methods and opened new avenues for immersive and interactive experiences. Augmented reality (AR) and virtual reality (VR) are two emerging technologies that have gained significant attention in education. This paper will explore the potential of AR and VR in education by examining their applications, benefits, and challenges. Augmented reality (AR) and virtual reality (VR) have the potential to revolutionize education. AR augments the real world with digital content, while VR creates immersive virtual environments. These technologies promote engagement, enable experiential learning, and personalize education. AR and VR enable collaboration, accessibility, and creativity. As hardware evolves and integration improves, the impact of AR and VR in education will continue to grow and change the way students learn and educators teach. This summary explores the potential of augmented reality (AR) and virtual reality (VR) in education. It highlights the transformative impact of these technologies on traditional teaching methods. AR and VR provide immersive and engaging experiences that enhance students' understanding, retention, and application of knowledge. They enable experiential learning, personalized and adaptive approaches, collaboration, and integration. In addition, AR and VR foster creativity and problem-solving skills and bridge the gap between theory and practice. As technology advances, the integration of AR and VR into education offers promising prospects for revolutionizing learning experiences
EXPLORING THE EFFICACY OF PSYCHOTROPIC DRUG COMBINATIONS FOR COVID-19 DEPRESSION
Authors: Silva Bruna Evandra Resende , Silva Jardison Rocha , Cé Rodrigo
Published: July 2023

Introdução: As drogas psicotrópicas tornaram-se cada vez mais significativas durante a pandemia de COVID-19 devido à sua eficácia no tratamento de sintomas neuropsiquiátricos. Objetivos: Esta revisão da literatura visa explorar a eficácia da combinação de vortioxetina, cetamina, bromazepam e alprazolam no tratamento da depressão associada ao COVID-19. Metodologia: O estudo adota uma abordagem de pesquisa qualitativa e quantitativa. Pesquisas bibliográficas foram realizadas em bancos de dados científicos, incluindo PUBMED, web of science e revistas eletrônicas. Os dados foram coletados usando combinações de palavras-chave relacionadas a vortioxetina, cetamina, bromazepam e alprazolam no tratamento da depressão durante a pandemia de COVID-19. Os artigos selecionados foram analisados por meio da análise temática. Resultados e Discussão: A interface mente-cérebro desempenha um papel crucial na compreensão das doenças psicológicas e seu tratamento. A pandemia de COVID-19 teve um impacto negativo significativo na saúde mental, levando a um aumento da utilização de drogas psicotrópicas. A vortioxetina, cetamina, bromazepam e alprazolam mostraram benefícios potenciais no tratamento da depressão associada ao COVID-19. Além disso, entender os perfis farmacocinéticos e os mecanismos de ação desses medicamentos é essencial para que os profissionais de saúde prescrevam e monitorem adequadamente seu uso em pacientes. Conclusão: A combinação de vortioxetina, cetamina, bromazepam e alprazolam pode oferecer uma abordagem de tratamento eficaz para a depressão associada ao COVID-19. No entanto, mais pesquisas são necessárias para determinar as dosagens ideais, os riscos potenciais e os efeitos a longo prazo dessa terapia combinada.
ANALYSIS OF THE CONCENTRATIONS OF ZOOPLANKTON ORGANISMS IN THE PONDS OF THE STATE ENTERPRISE "EXPERIMENTAL FISH FARM "NYVKA" OF THE INSTITUTE OF FISHERIES OF THE NATIONAL ACADEMY OF AGRARIAN SCIENCES OF UKRAINE, TAKING INTO ACCOUNT THE POSSIBILITY OF REARING OF JUVENILES OF THE LARGEMOUTH BASS (MICROPTERUS SALMOIDES)
Authors: Gushchin Volodymyr , Polishchuk Oleksii
Published: July 2023

The period from the largemouth bass larvae hatching to the moment, when fry reaching the size of 25-35 mm, can be attributed to the most critical in the aquaculture of this species. Unlike many other fish species, after switching to external feeding, largemouth bass larvae cannot immediately consume artificial pellets, therefore, the presence of groups of zooplankton organisms of different sizes in rearing ponds is a prerequisite for obtaining a sufficient number of fry and their rapid growth. Besides, a sufficient food base at the initial stages of growing of the largemouth bass fingerlings helps to reduce the degree of cannibalism among fish and increase fish productivity in the future. This article will consider the features of different feeding stages of the largemouth bass fry, the necessary concentrations of zooplankton organisms in the ponds of fish farms during its cultivation, generally accepted world methods of applying mineral and organic fertilizers to stimulate the natural food supply, as well as the results of a study, aimed to make an identification of the average indicators of the development of zooplankton in the ponds of the State enterprise «Experimental Fish Farm «Nyvka» of the Institute of Fisheries of the National Academy of Agrarian Sciences of Ukraine in terms of the possibility of growing of this species in aquaculture reservoirs at the initial stages
NGHIÊN CỨU ĐẶC ĐIỂM LÂM SÀNG, CẬN LÂM SÀNG CỦA BỆNH NHÂN NHỒI MÁU CƠ TIM CẤP ĐIỀU TRỊ TẠI BỆNH VIỆN TRUNG ƯƠNG THÁI NGUYÊN
Authors: Nguyễn Hoàng Giáp , Đặng Đức Minh , Nguyễn Tiến Dũng , Lương Thị Hải Hà
Published: July 2023

Mục tiêu: Đánh giá đặc điểm lâm sàng, cận lâm sàng trên bệnh nhân nhồi máu cơ tim cấp được điều trị tại BV Trung ương Thái Nguyên trong thời gian từ tháng 03/2022 đến tháng 3/2023. Đối tượng và phương pháp: Nghiên cứu được tiến hành trên 80 bệnh nhân nhồi máu cơ tim cấp được điều trị tại BV Trung ương Thái Nguyên. Nghiên cứu mô tả cắt ngang. Kết quả: Tuổi trung bình là 66,5 ±11,9 tuổi; Tỉ lệ nam/nữ là 2,6/1. Bệnh nhân nhập viện vì đau ngực chiếm tỷ lệ 85%. Bệnh nhân tới viện trước 12 giờ là 67,5% và 41,3% bệnh nhân có Killip II. Yếu tố nguy cơ chính của bệnh nhồi máu cơ tim cấp là tăng huyết áp có tỉ lệ cao nhất 77,5% và đái tháo đường chiếm 21,5%. Sau can thiệp ĐMV qua da có 53 bệnh nhân gặp các biến chứng, trong đó có 15 bệnh nhân có rối loạn nhịp tim (chiếm 28,2%) và 35 bệnh nhân bị suy tim (chiếm 66,1%). Tổn thương hai nhánh ĐMV có tỉ lệ cao nhất là 58,8%, 13 bệnh nhân tổn thương phối hợp 3 nhánh ĐMV (chiếm 16,2%). Tổn thương thành trước trên điện tâm đồ là chủ yếu chiếm 50%. Chức năng tâm thu thất trái giảm mức độ trung gian chiếm tỉ lệ 37,5%, có 5 bệnh nhân có chức năng tâm thu thất trái giảm dưới 40% (chiếm 6,2%).  Kết luận: Các bệnh nhân đều có yếu tố nguy cơ, đặc biệt là tăng huyết áp và đái tháo đường. Các bệnh nhân khởi phát với triệu chứng đau ngực chiếm 85%. Tổn thương hai nhánh ĐMV có tỉ lệ cao nhất là 58,8%, vị trí tổn thương trên điện tim chủ yếu thành trước với 50%. Chức năng tâm thu thất trái giảm mức độ trung gian chiếm tỉ lệ cao nhất với 37,5%.
Nutritional status in hepatic encephalopathy and transjugular intrahepatic portosystemic shunt – TIPS, and strategies to improve the outcomes
Authors: Berenguer M
Published: July 2023

Hepatic encephalopathy (HE) is one of the most severe complications following transjugular intrahepatic portosystemic shunt (TIPS). The identification and treatment of risk factors associated with the development of this complication may reduce the incidence and severity of post-TIPS HE. Several studies have demonstrated that the nutritional status plays a major role in the outcome of the cirrhotic population, particularly those who are decompensated. Although scarce, there are also studies highlighting an association between poor nutritional status, sarcopenia, fragile status, and post-TIPS HE. If these data are confirmed, nutritional support could become a means for decreasing this complication, thereby enhancing the use of TIPs in the treatment of refractory ascites or variceal bleeding. In this review, we will discuss the pathogenesis of HE, the data that supports an association with sarcopenia, nutritional status and frailty and the implications that these conditions have on the use of TIPS in clinical practice.
Comparison of meteor radar and TIDI winds in the Brazilian equatorial region
Authors: Paulino Ana Roberta , Rodrigues Delis Otildes , Paulino Igo , Lima Lourivaldo Mota , Buriti Ricardo Arlen , Batista Paulo Prado , Ridley Aaron , Wu Chen
Published: July 2023

Abstract. Using data collected from a meteor radar deployed at São João do Cariri (7.4°, 36.5° S) and the TIMED Doppler Interferometer (TIDI) on board the Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics (TIMED) satellite for 2006, comparisons of the horizontal winds (meridional and zonal components) were made in order to evaluate these techniques for scientific investigation and pointed out advantages of each instrument. A grid of ± 5 degrees of latitude and longitude centered at São João do Cariri was used to calculate the mean winds from the TIDI, which have a resolution of 2.5 km altitude starting from 82.5 km up to 102 km altitude. Otherwise, the meteor radar computes the winds for 7 layers of 4 km thickness overlapping 0.5 km above and below, which produces layers spaced by 3 km from 81 to 99 km altitude. When almost simultaneous measurements were compared, substantial discrepancies were observed in the vertical wind profiles. It happened because the meteor radar uses one hour bin size to estimate the wind from the echoes detected in the whole sky. While the TIDI measures instantaneous winds from the airglow emissions. In contrast, when the longer period of observation was taken into account, the meteor radar daily winds, averaged within a time interval of one month, were smoothed and showed more clearly the characteristics of the propagation of tides. The responses of the horizontal wind to the intraseasonal, semiannual and annual oscillations were satisfactory for the both techniques.
HyDesign: a tool for sizing optimization for grid-connected hybrid power plants including wind, solar photovoltaic, and Li-ion batteries
Authors: Murcia Leon Juan Pablo , Habbou Hajar , Friis-Møller Mikkel , Gupta Megha , Zhu Rujie , Das Kaushik
Published: July 2023

Abstract. Hybrid renewable power plants consisting of collocated wind, solar photo-voltaic (PV) and Lithium-ion battery storage connected behind a single grid connection can provide additional value to the owners and to society in comparison to individual technology plants such as only wind or only solar-PV. These benefits become significant in projects that have requirements to supply a certain amount of energy during peak hours given a set of grid capacity constraints or when the plant is selling the electricity with time-varying electricity prices. The hybrid power plants considered in this article are connected to the grid and share electrical infrastructure costs across the different generation and storing technologies. In this article, we propose a methodology for sizing of hybrid power plants as an optimization problem that maximizes the net present values over capital expenditures and compares it with standard designs that minimize the levelized cost of energy. The sizing problem formulation includes turbine selection (in terms of rated power, specific power and hub height), a wind plant wake losses surrogate, simplified photo-voltaic panel degradation, an internal energy management system operation optimization and battery degradation. The multi-disciplinary optimization problem is solved using a new parallel "efficient global optimization" algorithm. This new algorithm is a surrogate-based optimization method that ensures a minimal number of model evaluations but ensures a global scope in the optimization. The methodology presented in this article is available in an open-source tool called HyDesign. The hybrid sizing algorithm is applied for a peak-power plant use case at different locations in India where the renewable energy auctions impose a monetary penalty when energy is not supplied at peak hours.
Drivers’ parking behaviour around hospitals: An Australian study
Authors:   , Yousefian Parinaz
Published: July 2023

The review of parking literature indicates that parking choice is an under-researched area. As there is a scarcity of studies in this area, the author was motivated to concentrate on both latent and observable factors of parking behaviors and choices. This research aims to explain and predict drivers’ WTP for parking by considering variables that are defined in the literature such as non-observable (latent) variables (psychological variables) and observable variables, which influence the WTP of short-term drivers (less than 24 hours) on both off-street and kerbside parking, around hospitals in different locations outside of the Central Business District (CBD).
Comparative Study of Teacher Concepts from the Perspective of Ibn Khaldun an Al-Ghazali and Their Relevance to Teacher Competence
Authors: Romli Muhammad , Mubin Muhammad Ufuqul
Published: July 2023

This study was designed using the type of research library research (library research). And the data collection method used is the documentation method. The primary data sources are the books of Ibn Khaldun, al-Ghazali, and the Permendiknas Book Number 16 of 2007. While the secondary sources are: other supporting books related to the concept of the teacher. Meanwhile, in analyzing the data the author uses content analysis techniques. The results of this study indicate that the concept of teacher perspective of Ibn Khaldun and al-Ghazali which is relevant to Permendiknas Number 16 of 2007 is that the teacher must; a) gentle and loving to students b) Mastering the material and having scientific specialization c) Teachers must always improve their quality d) Prioritizing moral education and character of children e) Sincere in teaching f) Teaching directly face to face g) Providing lessons according to ability students and not overdo it h) Mastering learning methods i) Respectful and authoritative j) Giving advice to students gently k) having noble character and can be an example for students
Supervision Model of Supervisors of Islamic Religious Education in Improving The Personal and Social Competence of PAI Teachers in Wadaslitang District
Authors: Fuadi Salis Irvan , El Syam Robingun Suyud , Sekarinasih Anggitiyas , Waseso Hendri Purbo
Published: July 2023

This study seeks to reveal how the implementation of the PAI supervisory supervision model in improving the personality and social competence of PAI teachers in the Wadaslintang District. This research is a qualitative type, using a descriptive explanatory case study strategy. The subjects used samples with several data sources from school principals, PAI supervisors and PAI teachers in Wadaslintang District, and structured interview data collection techniques, questionnaires or questionnaires, and documentation. After being analyzed, it was written that in choosing the model for the PAI supervisor in the Wadaslintang sub-district, they did not use certain analytical techniques, they simply chose the preferred model and adjusted it to the conditions of the teacher where the PAI teacher was in the Wadaslintang sub-district. Seeing the habits of PAI teachers in the Wadaslintang sub-district who are compact and considerate of the conditions of other people, especially fellow teachers, so that supervisors use artistic models. According to the artistic approach, the supervisor knows about learning and is experienced as a teacher so that the person concerned gives meaning to ongoing learning without deviating from it. Supervisor approach with several steps: (1) Does not provide information about the learning to be observed. (2) Observing teachers who are teaching; (3) Observations that are carried out thoroughly from the beginning to the end of learning; (4) Provide a formal interpretation of the results of observations; (5) Submission of teaching interpretation results to teachers both in writing and orally.
ANALYSIS OF UNSTEADY FREE CONVECTION OVER A VERTICAL PLATE FOR KEROSENE-BASED NANOFLUID
Authors: Loganathan P. , Sangeetha S.
Published: July 2023

An analysis of kerosene-based nanofluid flow past a semi-infinite vertical plate is carried out numerically. A set of unsteady, nonlinear governing equations are derived, namely, the momentum, energy, continuity, and concentration equations. The Crank-Nicolson implicit finite difference scheme is used to solve the governing equations. It is unconditionally stable. Based on different values of physical parameters, the velocity, temperature, and concentration profiles across the boundary layer are depicted. Graphs comparing the heat transfer characteristics of Newtonian fluids with local and average, skin friction, Nusselt number, and Sherwood number are provided. With an increasing value of the Prandtl number of kerosene-based nanofluid the local skin friction coefficient decreases while the Nusselt number increases. Furthermore, the Sherwood number decreases as the Prandtl number increases.
A questão agrária no Município de Monteiro – PB: problematizações no ensino de Sociologia.
Authors:   , Pereira Barbosa Dione
Published: July 2023

Partimos da premissa que discutir a questão agrária é um elemento central para entendermos muitas das nossas desigualdades econômicas e sociais, e que o Ensino de Sociologia é potencialmente um campo que possibilita esta discussão. Neste trabalho, buscamos a partir da concepção materialista dialética marxista, problematizarmos o ensino de Sociologia em Monteiro-PB no sentido de compreendermos como nele se configura a questão agrária tão presente nesse município. Se a mesma é contemplada nos currículos dos cursos que formam professores para atuarem na região, como também nos planejamentos dos professores que lecionam a Sociologia no Ensino Médio do referido município. Para tanto, buscamos investigar quatro escolas da rede pública de ensino, sendo elas: o Instituto Federal de Educação da Paraíba – Campus Monteiro, Escola Cidadã Integral Técnica “José Leite de Souza”, Escola Estadual de Ensino Fundamental e Médio “Miguel Santa Cruz” e Escola Estadual de Ensino Médio “Bento Tenório de Sousa” - Escola do Campo. Nas considerações finais pudemos apontar nossos resultados, os quais indicam que a presença da questão agrária não tem sido levada em consideração em nenhuma esfera do planejamento, tanto dos documentos escolares, como na elaboração das aulas.