bluuebunny/crossref_metadata_2025 huggingface dataset:
Prevention of Molten Sand Attack on Thermal Barrier Coatings for Rotorcraft Gas Turbine Blades ­ A Round Robin Test Evaluation
Authors:   U.S. Army Research Laboratory, Murugan Muthuvel ,   NASA-Glenn Research Center, Zhu Dongming ,   NAVAIR, Pegg Robert ,   University of Maryland, Flatau Alison ,   AMRDEC, Kerner Kevin , Ghoshal Anindya , Nieto Andy , Walock Michael , Bravo Luis , Jain Nishan , Pepi Marc , Swab Jeffrey , Rowe Chris , Army US
Published: August 2024

In order to alleviate particle ingestion problems during mission flights in sandy desert regions, most of the rotorcraft gas turbine engines are fitted with inlet particle separators. However, these particle separators, which are typically vortex cyclone flow type separators, are not 100% efficient in filtering fine sand particles of size 75 microns or below. These fine sand particles are in a molten state as they exit the combustor and deposit on to and clog the first stage turbine nozzle vanes and rotor blades badly. This sand deposition causes sudden engine power loss as well as eventual blade damages that include blade coating wear, sand glazing, Calcia-Magnesia-Alumina-Silicates (CMAS) attack, oxidation, and plugged cooling holes. Rapid engine performance deterioration has caused loss of aircraft and loss of life incidents during military missions in degraded particle laden environment. The objective of this research is to prevent molten fine particle interactions with typical turbine blade ceramic coatings at the microstructure level. A set of multi-layered and composite coating materials and processes were selected and tested in this round robin experimental evaluation to study their ability to prevent molten sand (CMAS) attack on Yttria Stabilized Zirconia (YSZ) based thermal barrier coatings (TBCs), used in current rotorcraft gas turbine engines. The test evaluations were conducted at the coupon level using a Jet Burner Rig with particulate ingestion facility available at the U.S Army Research Laboratory, Aberdeen Proving Ground, Maryland. The engineered coatings evaluated at the coupon level were down-selected and applied to the first stage turbine nozzle ring of a typical rotorcraft gas turbine engine. The full-scale engine level sand ingestion tests were conducted at the NAVAIR facility, Patuxent River, Maryland. The CMAS infiltration into the coatings and the glassified sand deposition characteristics of the various tailored coatings are compared in this paper. The promising coating candidates from the engine level sand ingestion tests are summarized and future recommendations are presented in this paper. A summary of the ongoing simulations work to understand the interactions of sand particulates with TBCs of turbine blades is also presented in this paper.
An Alternative and Safer Approach to Takeoff and Landing Acceptable Means of Compliance (AMC/AC 27 and 29) and Air Transport Offshore Operations Regulation
Authors:   Leonardo Helicopters, Paggi Bernardino , Feller Marco
Published: August 2024

The current certification requirements for multiengine rotorcrafts for takeoff and landing performance do not always provide a safe approach to the scenarios where the helicopters actually operate if compliance demonstration is achieved with the current accepted methods. Several critical aspects of these methods do not to produce "safe" flight envelopes and provide insufficient or inadequate operational information. The current regulations are long dated and not updated to reflect the advance in technology. The current accepted methods of compliance for the definition of the H-V envelope for multi-engine helicopters do not ensure the airworthiness required for all possible operations. For this reasons, the H-V envelope should not be considered a limitation for all CS29 multi-engine configurations and substituted by performance that would allow defining a safer envelope. Particular attention should also be given to operations over elevated helidecks and oilrigs where the environment is extremely demanding and not predictable. In order to get approval for these kinds of operations, specific testing methodology should be developed and approved. A detailed list of proposed changes for the Advisory Circular and applicable regulation is considered and new acceptable compliance methods for the following subjects are proposed for: Cat B Take Off; H-V envelope; Cat A performance for elevated/oilrig helidecks; Takeoff performance influential factors. The incorrect definition of the applicability of the H-V envelope has created an unsafe regulatory case also in the operational rules (AIR-OPS) for Operations in performance class 2 with exposure from helidecks.
Constant Stress Amplitude Fatigue Crack Growth in Notch Pre-cracked Aluminum 7075-T6 Rivet Hole
Authors:   U.S. Army Research Laboratory, Haynes Robert ,   Southern University and A&M College, Joshi Ghanashyam , Bradley Natasha
Published: August 2024

Constant stress amplitude fatigue tests were conducted on the notch pre-cracked Aluminum 7075-T6 rivet hole dog-bone coupons. Monitoring of visible surface crack length by special surface engraving using digital microscope images and by ultrasonic sensors signals was carried out to yield fatigue crack length measurements in relation to number of fatigue cycles applied. The experimental results provided fatigue crack length validation for the ultrasonic sensor measurements. Fracto-graphic examination of failed fatigue surfaces yielded further confirmation of notch pre-crack length and crack growth marker bands. These experimental inputs were used in NASGRO and AFGROW software applications, for fatigue crack growth simulation. Comparative analysis of simulation and experimental fatigue crack growth results is presented in this paper. Opportunities for further work are discussed.
Optimization of Extension-Twist Coupled Composite Blades for High-Speed Rotorcraft
Authors:   Rensselaer Polytechnic Institute, DiPalma Matthew , Ferede Etana , Gandhi Farhan
Published: August 2024

A variable stiffness composite optimization methodology is presented to study the extension-twist coupling capability of composite rotor blades to passively vary the elastic twist distribution as a function of the rotational speed of the rotor. To this end, an optimization framework, with composite laminates as design variables, is implemented to optimize an extension-torsion-coupled composite blade based on the UH-60A Black Hawk. The results show that variation in twist angle of up to 9° can be achieved by reducing the rotor speed by 20% (from 100%NR to 80%NR) using optimized composite laminates while complying with material strength constraints under both centrifugal and aerodynamic loads in hover. Using this optimized design, a composite blade could be constructed with 13° nose-up structural twist. As the rotor is spun up to 100%NR (for hover), the blade elastically twists nose-down to a near-optimum linear twist distribution of -12:5°. Yet when the rotor speed is reduced to 80%NR to potentially accommodate compressibility effects on the advancing blade tip in high-speed forward flight, the blade elastically untwists to only -3:5° of linear tip twist along the blade span. This passive twist adaptivity could improve a wide range of rotor performance metrics, including power, hub vibrations, and root bending loads, across both flight regimes.
Development of Techniques for Composite Parts Failure Analysis in Static and Fatigue Mode - Application on Thermoset and Thermoplastic Materials for Rotorcraft Main Rotor Hub Analysis
Authors:   Airbus Helicopters, Herman Mélanie ,   CNRS, Hochard Christian , Besson Jean-Marc , Charles Jean-Paul , Boulebbad-Gomez Nassira , Lahellec Noël
Published: August 2024

A model defined at the ply scale to predict the failure of laminated composites for static or fatigue loading is proposed. The model describes the loss of strength in the fiber direction for a significant level of transverse damage. This meso-scale model has been characterized on woven ply laminates used for rotorcraft dynamic components, such as glass/epoxy of Starflex®, carbon fiber/epoxy, and carbon fiber/PEEK of H160 main rotor hub. Failure behavior prediction at coupon level has been validated regarding static and fatigue failure mode in tension for epoxy resin woven ply laminates. Characterizations have been also provided for PEEK resin in balanced woven ply laminate, regarding static or fatigue failure mode. Those activities are crucial to increase the level of confidence in failure model, to rely on virtual testing at coupons level, and to better predict damage and failure at component level. This work intends to support the building block approach during development and certification of such critical applications for rotorcraft.
A Progressive Damage Model for Fatigue Analysis of Woven Fabric Composites
Authors:   Global Engineering and Materials Inc., Lua Jim ,   Naval Air Warfare Center (PAX), Rahman Anisur , Pham Dinh , Phan Nam
Published: August 2024

An efficient two-step progressive damage model has been developed to predict the accumulated damage and fatigue life of woven fabric composite materials. A stress-based failure criterion coupled with a continuum damage approach is employed to predict the damage in fabric materials when loaded up to the desired stress level. Upon fatigue cyclic loading, fatigue damage initiation and propagation in the warp and weft tows, in the matrix constituent and their interfaces are evaluated with S-N based accumulation models characterizing the cycle-dependent strengths in the fiber tows and the matrix subject to tension, compression and shear loading. Nonlinear shear behavior of the matrix is characterized by a curve-fit nonlinear shear model from the static coupon test data of (+45/-45) plain weave. The fatigue cycles of each element in the fiber tows, matrix region and their interface are computed via a Newton iteration method and a numerical procedure is performed to effectively estimate the next proceeding cycles based on the element dominated failure mode. A stiffness reduction method is applied once constituent fatigue damage is indicated in each cycle increment, and the stress field is updated accordingly for further loading cycles. The predictive capabilities of the developed fatigue model are demonstrated using tension-tension fatigue of SYNCOGLAS R420 E-glass woven fabrics and T300 5HS/914 dog-bone specimens of different layups.
Architecture-Driven Assurance for Safety-Critical Avionic Systems
Authors:   Rockwell Collins, Bliek Dan
Published: August 2024

As the growth in complexity of avionic systems continues, development costs and schedules have correspondingly increased dramatically. Systems engineering tools and methods have not sufficiently adapted to the demands of today’s complex systems and as a result avionic systems typically field late, over budget, and often with reduced capabilities. The status quo for systems and software engineering tools, methods and processes is no longer affordable.
Architecture-Driven Assurance is model-based systems engineering (MBSE) development approach for constructing reliable and secure systems using engineering models. The objective of the architecture-driven assurance methodology is to ensure that cyber-resilient, functionally correct, verifiably safe components can be rapidly developed, integrated and verified. The approach integrates compositional reasoning into the engineering workflow utilizing system models and formalized descriptions of system behaviors. The models are translated into a form that can be interpreted by powerful formal methods based general-purpose analysis engines. Rockwell Collins has created an integrated development environment that supports the architecture-driven assurance concepts integrated into a systems engineering workflow.
Control Design for Tracking of Scaled MTE Trajectories on an IRIS+ Quadcopter
Authors:   University of Portland, Ivler Christina ,   San Jose State University Foundation, Goerzen Chad ,   NASA Ames Research Center, A. Joeseph ,   San Jose State University Foundation, Sanders Frank ,   U.S. Army Aviation Development Directorate (AMRDEC), Tischler Mark , Cheung Kenny
Published: August 2024

Development of handling qualities requirements and mission task elements to evaluate unmanned aerial vehicles are needed. Handling qualities requirements guide the development of the control system, a critical element on unmanned vertical lift aircraft that provide stability, disturbance rejection, and the ability to follow waypoints/trajectories. In this paper, scaled ADS-33E-PRF mission task elements are used to evaluate control system performance of a small vertical lift unmanned aerial system. A trajectory tracking and aggressiveness score is used to rate the performance of the mission task element performance. Additionally, nine control system designs with varying disturbance rejection properties are evaluated with respect to this scaling and scoring metric methodology. Evaluation of quantitative metrics, such as disturbance rejection bandwidth, relative to the scaled mission task element performance is a key step towards developing criteria for unmanned aerial systems. Flight test results for the IRIS+ quadcopter are presented as the example aircraft, and compared to previous results on an autonomous UH-60 as a point of qualitative verification of the scaling method.
Visual Detection of Moving Ground Obstacles for Full-Size Autonomous Aircraft Landing
Authors:   Near Earth Autonomy, Brajovic Vladimir , Han Chenhao , de Lucas
Published: August 2024

Full-size autonomous rotorcraft flying multi-hop missions must be able to react quickly to unsafe landing conditions, such as moving ground vehicle activity in the landing zone (LZ). In this paper, an algorithm is presented which detects moving ground vehicles from distances of 120 m to 500 m (394 ft to 1640 ft), using monocular visual-spectrum video and pose information. The approach requires few assumptions on the object being detected (contiguous appearance and discernible contrast against the ground), allowing for detection of different sizes and shapes of moving objects. The performance of the algorithm is evaluated over a dataset of 76 real approaches, analyzing the true and false positive rates per-approach and per-frame. The algorithm is found to correctly detect hazardous landing conditions in 41/41 approaches to moving-vehicle-occupied LZs, and falsely declare unsafe landing conditions in 2/35 approaches to clear LZs.
‘Bring the whole tithe into the storehouse’: The tithe and sustainable development in Ghanaian Pentecostalism
Authors: Kenin Emmanuel A.
Published: August 2024

Background: This article explores the Church of Pentecost’s (CoP) theology of tithes and its intersection with sustainable development in Ghana. This research is grounded on the theory that the CoP through the Pentecost Social Services (PENTSOS) as well as other Church-initiated interventions, is pursuing sustainable development in Ghana through her theology of tithes.Objectives: The objective of this research is to demonstrate that the CoP’s theology of tithes is a relevant African Pentecostal theology for the study of the relationship between Pentecostalism and sustainable development.Method: The study adopts a phenomenological approach in exploring the CoP’s theology of tithes and its relationship with sustainable development.Results: The key findings of this study indicate that there is a nexus between an African Pentecostal theology of tithes adopted by the CoP and sustainable development, and that the CoP is promoting the attainment of 14 out of the 17 Sustainable Development Goals (SDGs) in Ghana.Conclusion: The CoP, an indigenous African Pentecostal Church, has been able to demonstrate that there is a relationship between her theology of tithes and the attainment of the United Nation’s SDGs.Contribution: This research proves that the CoP has been able to successfully develop an indigenous African Pentecostal theology of tithe and free-will offering from the Akan traditional worldview of the ntotosoƆ dudu [which literally means, the added tenth part] and Ɔpεmu afƆrεe [to wit, offering out of one’s volition] respectively.
Role of Intraoperative Left Ventricular Global Longitudinal Strain in Hemodynamic and Cognitive Outcomes in On-Pump Coronary Artery Bypass Surgery: A Prospective Observational Study
Authors: Lineburger Eric B. , Arya Rajesh C. , Junior Celso G. , Lima Fernanda S. , Búrigo Eduardo M. , Fermo Gabriel Simoni R.
Published: August 2024

Background:

The role of left ventricular global longitudinal strain (LVGLS) in coronary artery bypass grafting (CABG) and outcomes such as low cardiac output syndrome (LCOS) is not well established. The authors investigated the relationship between LVGLS before and after induction of anesthesia, their differences, and their relationship with LCOS and other outcomes.

Methodology:

A prospective observational study was conducted in a public/private hospital with 50 adult patients scheduled for on-pump CABG with normal left ventricular ejection fraction (LVEF). Acoustic windows necessary to obtain the 2D-LVGLS were acquired with transthoracic echocardiography (TTE) before induction of anesthesia (LVGLSBI) and after with mechanical ventilation (LVGLSAI) using transesophageal echocardiography (TEE). LCOS was defined as the use of epinephrine, dobutamine, and/or milrinone at minimum IV doses of 1 μg/min-1, 2.5 μg/kg-1/min-1, and 0.375 μg/kg-1/min-1, respectively, for a minimum of 24 h after cardiopulmonary bypass.

Results:

A dedicated workstation (EchoPAC Software v203, GE) was used for offline calculation of LVGLS. LVGLSBI did not have a significant correlation with LCOS (mean difference, 1.66; 95% CI, −–3.63 to 3.05; P = 0.862), nevertheless, it was an independent risk factor of in-hospital mortality (OR, 0.74; 95% CI, 0.57–0.95; P = 0.02), 3-month mortality (OR, 0.80; 95% CI, 0.64–0.99; P = 0.05), and delirium (OR, 0.65; 95% CI, 0.43–0.97; P = 0.03) in the multivariate analysis. LVGLSAI was also an independent risk factor for 3-month mortality (OR, 0.78; 95% CI, 0.62–0.99; P = 0.04).

Conclusions:

In CABG surgeries, LVGLS was a predictor of adverse outcomes in both awake and anesthetized patients with normal LVEF.
Prevalence of Obesity among Primary School Children in Baghdad/AL-Rusafa 2022
Authors: Subhi Safa Khalid , Alkhazrajy Lujain
Published: August 2024

Background:

Obesity is a complex, chronic condition that is characterized by multiple causes and adverse health consequences. The early detection of obesity in children can help us control it and thus improve growth and development.

Objectives:

To find out the prevalence of obesity among primary school children. To find out if there is any association between childhood obesity and certain variables (age, socioeconomic state [SES], type of school, and education of the father).

Subjects and Methods:

A cross-sectional study was conducted in the Iraq/Baghdad/Al-Russafa sector from March 1, 2022, to January 1, 2023. The study was conducted in the First Educational Directorate of Alrussafa. A convenient sample of six primary schools in Baghdad/Alrussafa including three private schools and three public schools. From these schools, a convenient sample of 650 students was enrolled in the current study.

Results:

A total of 650 participants were enrolled; 249 (38.3%) had normal weight, 241 (37.1%) of the participants were obese, 113 (17.4%) of them had overweight, and 47 (7.2%) had underweight. In addition, a significant association was obtained between the body mass index and gender (P = 0.001), and a higher proportion of participants was among males. There was a significant association between body mass index (BMI) and the type of school. The higher proportion of obese participants was among those who were in private schools (P = 0.001).

Conclusion:

A significant association was obtained between the BMI and gender and type of school. There was no significant association between the BMI and age, family size, or SES. The students who were male and were teaching in private schools were more prone to be obese.
Prevalence of Current Areca Nut Use and Its Associated Factors among Bhutanese Aged 15–69 Years: Analysis of the Nationally Representative STEPS Survey 2019
Authors: Penjor Tashi , Gurung Mongal Singh , Robson Mark G. , Siriwong Wattasit
Published: August 2024

Background:

Areca nut (AN) use receives less global attention than tobacco use. Studies have linked AN consumption to a range of adverse health effects, including oral cavity and pharyngeal cancers, periodontal diseases, cardiovascular diseases, diabetes, hypertension, and addiction. The masticatory use of AN is rampant in Bhutan. There is a paucity of local evidence and limited empirical studies to understand the factors associated with current AN use in Bhutan.

Methods:

This analysis uses secondary data from the Bhutan STEPS Survey 2019 that included 5575 participants aged 15–69 years, selected using multistage stratified cluster sampling. The outcome variable of interest was current AN use. Weighted analysis was done to calculate the prevalence of AN use. Factors associated with AN use were assessed using multivariable logistic regression models.

Results:

The prevalence of current AN use was 56.82% (95% confidence interval [CI]: 54.27–59.33). A significantly higher prevalence of 63.58% (95% CI: 60.58–66.48) was found in the age group of 25–39 years. Tobacco users were 17% more likely to use AN as compared to those who do not consume tobacco (adjusted odds ratio: 1.17, 95% CI: 1.08–1.26). Current alcohol consumers were 45% more likely to consume AN as compared to lifetime alcohol abstainers.

Conclusions:

Age, alcohol use, and tobacco use were associated with current AN use in Bhutan. There is a need to regulate access to AN while targeting young and middle-aged individuals with public health and behavioral interventions.
Perception and Disposal Practices of Toddler Feces by Mothers in Suburban Area of Kendari, Indonesia
Authors: Nazar Sitti Zahra Aulia , Narayanappa Chandana , Daniel D.
Published: August 2024

Unsafe child feces disposal (CFD) is another form of open defecation and can pose a risk of disease in children. More than 30% of Indonesian households practice unsafe CFD, yet, its determinants are unknown. This study aims to identify the contextual and behavioral determinants of CFD through the lens of the Risk, Attitude, Norm, Ability, and Self-regulation (RANAS) framework. The cross-sectional study was conducted in 349 households in the suburbs of Kendari City, Southeast Sulawesi Province, Indonesia, in mid-2023. About 64% of the respondents practiced unsafe CFD. Most respondents used diapers that were immediately thrown into the trash without cleaning (i.e., 60.2%). Logistic regression analysis found two significant contextual factors associated with safe CFD: having received sanitation-related information and toddler age, i.e., children below 5 years old. Perceived severity was the most influential psychological factor behind the CFD practice, followed by knowledge. This study suggests that informing caregivers about the negative health effects of practicing unsafe CFD, especially on their children, can be a positive trigger for them to practice safe CFD. In addition, the promotion of early toilet initiation and recycling programs for used diaper waste should also be conducted to ensure comprehensive CFD management.
Rocahepevirus ratti: An underrecognised cause of acute hepatitis
Authors: Gherlan George S
Published: August 2024

Zoonoses are responsible for many of all emerging infectious diseases as well as for those already established. Rocahepevirus ratti is a rat-originated virus related to the hepatitis E virus (Paslahepevirus balayani) but highly divergent genetically from this, with a high cross-species infection potential and zoonotic transmission. It can infect humans, leading to acute hepatitis, and is primarily transmitted through the consumption of contaminated water. Rocahepevirus ratti was first discovered in Germany in 2010. The first human case was described in 2017 in Hong Kong in an immune-compromised patient. The first case of chronic infection with Rocahepevirus ratti was described in 2023. A meta-analysis based on 38 studies published between 2000 and 2023 identified 21 cases in humans described up to this date and 489 infections in different animals. Raising awareness regarding this virus is essential, as there are probably many cases that remain undiagnosed, and the virus even has the ability to produce chronic infections in selected patients.
Causal association between 731 immunocyte phenotypes and liver cirrhosis: A bidirectional two-sample mendelian randomization analysis
Authors: Li Ying , Quan Xin , Tai Yang , Wu Yu-Tong , Wei Bo , Wu Hao
Published: August 2024

BACKGROUND

Liver cirrhosis is a progressive hepatic disease whose immunological basis has attracted increasing attention. However, it remains unclear whether a concrete causal association exists between immunocyte phenotypes and liver cirrhosis.

AIM

To explore the concrete causal relationships between immunocyte phenotypes and liver cirrhosis through a mendelian randomization (MR) study.

METHODS

Data on 731 immunocyte phenotypes were obtained from genome-wide association studies. Liver cirrhosis data were derived from the Finn Gen dataset, which included 214403 individuals of European ancestry. We used inverse variable weighting as the primary analysis method to assess the causal relationship. Sensitivity analyses were conducted to evaluate heterogeneity and horizontal pleiotropy.

RESULTS

The MR analysis demonstrated that 11 immune cell phenotypes have a positive association with liver cirrhosis [P < 0.05, odds ratio (OR) > 1] and that 9 immunocyte phenotypes were negatively correlated with liver cirrhosis (P < 0.05, OR < 1). Liver cirrhosis was positively linked to 9 immune cell phenotypes (P < 0.05, OR > 1) and negatively linked to 10 immune cell phenotypes (P < 0.05; OR < 1). None of these associations showed heterogeneity or horizontally pleiotropy (P > 0.05).

CONCLUSION

This bidirectional two-sample MR study demonstrated a concrete causal association between immunocyte phenotypes and liver cirrhosis. These findings offer new directions for the treatment of liver cirrhosis.
DESIGNING AND VALIDATION OF SATMYA PARIKSHA SCALE (SP SCALE)
Authors: Bhat Sowrabha , Maske Patil Jotiram
Published: August 2024

Background: Satmya or compatibility refers to anything compatible with one’s constitution following consistent
and sustained use. People’s compatibilities vary. One individual’s compatibility may not be compatible with another. The physician must understand compatibility. This contributes to good treatment planning. Knowledge of
Satmya (compatibility) and Asatmya (incompatibilities) in each patient helps the physician treat the disease thoroughly, organize the treatment correctly, and arrange the compatible diet for the patient. So, the study has been
conducted to prepare for the Satmya Pariksha Scale. Aim & Objectives: The aim of the study is to Design &
Validate the Satmya Pariksha Scale (SP Scale) in a sample of 30 healthy individuals. Design: A cross-sectional
survey study Methods: The Satmya Pariksha Scale has been designed & validated by reliability & Validity tests
like face validity, content validity & construct validity. The reliability analysed by the Cronbach’s alpha coefficient, i.e .0.872 & KMO Bartlett’s test value is 0.751. The Exploratory Factor Analysis used Kaiser’s criteria for
extracting factors with Varimax rotation. Result: Satmya Pariksha Scale. The study sample reproduced a similar
structure of the original face, content, and construct validity, which met the standards. Internal consistency was
excellent, with KMO Bartlett’s Test value of 0.751 and Cronbach’s alpha Coefficient of 0.872, which is highly
significant. Conclusion: The Satmya Pariksha Scale is a valid & reliable instrument for assessing the level of
Satmya in healthy individuals.
Diversity Management on the Salary for Job Satisfaction CV. Megah Persada Indonesian Dynasty
Authors: Harjanti Wulandari , Hardiyanto Gamma , Cahyo Nugroho Dodit
Published: August 2024

This research aims to analyze the influence of diversity management on employee job satisfaction in CV. Megah Persada Indonesian Dynasty, with a special focus on the compensation or salary aspect. Diversity management is one of the important elements in creating an inclusive work environment, which is expected to increase employee satisfaction and productivity. In this study, a quantitative method was used by collecting data through a survey of company employees. The results show that good diversity management, especially in terms of fair and balanced payroll policies, contributes significantly to the increase in employee job satisfaction. These findings emphasize the importance of diversity management in creating a harmonious and productive work environment, as well as provide practical implications for companies in formulating policies related to human resource management.
Sosialisasi UPT Karir dan Kewirausahaan Pengenalan Sisdikti 2024 Politeknik Negeri Sriwijaya
Authors: M Arief Rahman  , Indah Pratiwi  , Paisal Paisal
Published: August 2024

Kegiatan sosialisasi Unit Pelaksana Teknis (UPT) Karir dan Kewirausahaan Pengenalan Sistem Informasi Pendidikan Tinggi (Sisdikti) Tahun 2024 di Politeknik Negeri Sriwijaya bertujuan untuk meningkatkan kesadaran dan kemampuan mahasiswa dalam mengembangkan jiwa wirausaha dan karir yang lebih baik. Metode yang digunakan adalah kualitatif berdasarkan dengan pengabdian kepada masyarakat dan dilihat dari hasil paparan yang telah dilaksanakan. Melalui sosialisasi ini, mahasiswa diperkenalkan dengan unit UPT yang menyediakan pembekalan teknis dan strategi untuk menghadapi tantangan dalam dunia bisnis dan pengembangan karir. Metode kualitatif deskriptif digunakan untuk menggambarkan dan menjelaskan hasil kegiatan, yang menunjukkan bahwa sosialisasi ini berhasil meningkatkan kemampuan mahasiswa dan memberikan pembekalan yang bermanfaat. Hasil dari kegiatan ini diharapkan dapat mempersiapkan mahasiswa untuk menjadi lulusan yang disiplin, mandiri, inovatif, dan kompetitif di pasar kerja setelah mengikuti pelaksaan sosialisasi UPT Karir dan Kewirausahaan pada pelaksanaan Pengenalan Sisdikti 2024 Politeknik Negeri Sriwijaya.
Article RETRACTED due to manipulation by the authors Endurance training and its impact on physical health among university students
Authors: Okilanda Ardo , Putri Siti Ayu Risma , Fajar Mutiara , Febrian Mario , Saputra Mardepi , Tulyakul Singha , Duwarah Twinkle , Putra Aidil , Hasan Baharuddin , Mudayat Mudayat , Syaputri Wuri
Published: August 2024

This study seeks to emphasise the importance of endurance training in improving the physical well-being of college students. Cardiovascular fitness, body composition, and muscular strength are crucial for overall health, particularly among university students, driving the motivation for this study. The study involved 42 university students who were surveyed using standardised instruments to evaluate their participation in endurance training activities and self-reported physical health indicators. Researchers conducted correlation studies to explore the connections between the frequency and duration of endurance exercise and cardiovascular fitness, body composition, and muscular strength. The study design involved survey distribution, data collection on physical health indicators, and statistical analysis to identify the correlations. The study's findings show that there are strong positive connections between the frequency and length of endurance training and improvements in cardiovascular fitness and muscular strength among university students. Nevertheless, there were no notable correlations found between body mass index and sit-up ability. These findings highlight the potential advantages of regular endurance training for improving various areas of physical health in this particular group. This study holds significance for coaches, fitness professionals, and university students. The significance of incorporating endurance training into the exercise regimens of university students to enhance their physical well-being is emphasised. Coaches can empower students to improve their overall well-being by emphasising the advantages of endurance exercise and offering personalised advice. This research further enhances the existing knowledge on the significance of endurance training in university settings by providing practical suggestions for coaching interventions.
Keywords: Cardiovascular Fitness, Body Composition, Muscular Strength
Violencia escolar y desempeño docente: la clase de educación física como estrategia de prevención (School violence and teacher performance: physical education class as a prevention strategy)
Authors: Souza de Carvalho Ricardo , Carreño-Romero Cristóbal , Castro-Ruiz Juan , Celis-Leiva Paula , Cifuentes-González Daniela , Schilling-Lara Caroll , Castillo-Retamal Franklin
Published: August 2024

El estudio realizado tuvo como objetivo analizar la percepción de docentes de Educación primaria y secundaria sobre la violencia escolar en contextos escolares de una ciudad del centro sur de Chile. La metodología empleada corresponde a un diseño cualitativo utilizando entrevistas semiestructuradas en las que participaron docentes de Educación Física de establecimientos educacionales municipales y particulares subvencionados. Los resultados revelan que el cuerpo docente está cada vez más consciente de las expresiones de violencia que ocurren en el entorno escolar. Una de las alternativas preventivas sugeridas por los profesionales es la implementación de actividades extraprogramáticas destinadas a mejorar las relaciones interpersonales. Por tanto, se concluye que como medida para reducir o mitigar las acciones violentas se incorporen los juegos cooperativos y de autoconocimiento en el currículum escolar.
Palabras clave: violencia escolar, prevención, juegos cooperativos.
Abstract. The objective was to analyze the perception of primary and secondary school teachers of a city in the center-south of Chile on school violence. A qualitative methodology was used through semi-structured interviews in which eight teachers from municipal and subsidized private elementary and secondary schools participated. The results indicate that teachers are increasingly recognizing the expressions of violence in the classroom and one of the prevention alternatives proposed is to develop extracurricular activities to improve interpersonal relations. It is concluded that it is necessary to incorporate activities such as cooperative or self-knowledge games to reduce or mitigate violent actions in school spaces.
Key words: school violence; prevention; cooperative plays
Atenção a crianças e adolescentes vítimas de violência sexual no Sistema de Garantia de Direitos
Authors: Gaspari Nascimento Lívia , Moreira Trugilho Silvia , Gusmão Ferreira de Andrade Janice
Published: August 2024

Este artigo compreende uma reflexão a respeito da violência sexual contra crianças e adolescentes, com especial recorte para a atenção e proteção às vítimas na esfera do Sistema de Garantia de Direitos de um município no interior do Espírito Santo. Constitui-se produto de um estudo que teve por objetivo analisar como o Sistema de Garantia dos Direitos da Criança e do Adolescente se materializa (ou efetiva) nas ações de atenção e proteção às vítimas de violência sexual. Toma por base a compreensão de que a violência sexual infanto-juvenil expressa uma das múltiplas formas de manifestação da questão social, produzida e reproduzida no desenvolvimento das forças produtivas capitalistas, obedecendo a ordem da sociabilidade burguesa. O estudo foi realizado a partir de uma pesquisa documental de abordagem qualitativa, utilizando-se da análise de processos judiciais relacionados à violência sexual infanto-juvenil na realidade do município. O tratamento dos dados se deu através da análise de conteúdo, e os resultados revelaram a necessidade do aprimoramento de algumas ações e serviços de atendimento a crianças e adolescentes vítimas de violência sexual.
Prediction of sugars in ripe banana pulp from spectra of unripe fruit peel using near-infrared spectroscopy and multivariate calibration
Authors:   , Abreu Maria Luísa Soares de
Published: August 2024

The prediction of sucrose, glucose, and fructose concentrations in ripe banana pulp from spectra of both unripe and ripe fruit peel employing near-infrared spectroscopy (NIR) and multivariate calibration is the aim of this work. 320 unripe bananas were harvested, and NIR spectra were collected on the peel using diffuse reflectance. The sugars, i.e., sucrose, glucose, and fructose, were extracted from the pulp using an adapted procedure presented in this work. Subsequently, the extract was analyzed by high-performance liquid chromatography (HPLC) with an evaporative light-scattering detector. The sucrose, glucose, and fructose concentrations ranged from 45.10-207.20, 23.81-78.18, and 21.60-85.26 mg/g, respectively. Multivariate calibration models using partial least squares regression (PLS) were built to predict sugars from NIR spectra. Ordered predictors selection (OPS) was employed to select the most informative variables. The PLS models from the unripe peel for sucrose, glucose, and fructose presented root mean square error of prediction (RMSEP) values of 15.18, 3.41, and 8.7 mg/g, respectively. For the dataset using the ripe banana peel, the RMSEP values were 19.29, 5.29, and 6.65 mg/mL, respectively. Keywords: Banana; NIR; Chemometrics; PLS; HPLC; Sucrose; Glucose; Fructose; Early prediction
Filmes de óxido de grafeno oriundo de grafite reciclado e de nanoestruturas de níquel em meio de solvente eutético profundo para modificação de eletrodos para fins eletroanalíticos
Authors:   , Silva Rafael Matias
Published: August 2024

Contribuindo para o desenvolvimento da química eletroanalítica sustentável, filmes de óxido de grafeno eletroquimicamente reduzido (ERGO) obtidos a partir de grafite residual de pilhas de Zn-C descarregadas bem como o estudo da eletrodeposição de nanopartículas de níquel usando solventes verdes são propostos neste trabalho. O grafite do cátodo das pilhas Zn-C descartadas foi recuperado e utilizado na síntese de óxido de grafeno (GO) pelo método de Hummer modificado, que foi posteriormente reduzido eletroquimicamente (ERGO). As características eletroquímicas dos filmes de ERGO foram investigadas usando a sonda redox de ferricianeto, bem como moléculas de paracetamol (PAR) e hidroquinona (HQ), como analitos modelo. Em termos analíticos, o eletrodo baseado em ERGO apresentou maior sensibilidade analítica do que o GCE e o GO-GCE. Além disso, utilizando-se da eletrodeposição, filmes de níquel com diferentes morfologias foram obtidos usando os seguintes solventes eutéticos profundos: Relina, Etalina e Glicelina. Diferentes parâmetros de eletrodeposição foram estudados, chegando assim, a uma condição mais adequada para tal processo: DES - Relina, tempo de deposição de 2 h e temperatura ambiente. Por fim, pode-se concluir que foi proposto um sensor com parâmetros analíticos promissores e foi possível determinar uma condição adequada para deposição de níquel usando um solvente verde como meio eletrolítico. Palavras-chave: Análise eletroquímica; Lixo eletrônico - Reaproveitamento; Voltametria; Solventes; Níquel; Eletrodeposição; Química Verde
Análise da estrutura institucional do serviço de proteção social básica no domicílio para pessoas com deficiências e idosas em Minas Gerais
Authors:   , Gonçalves Marciana Aparecida Hilário Pena
Published: August 2024

O presente estudo objetivou analisar a estrutura institucional do Serviço de Proteção Social Básica no Domicílio para Pessoas com Deficiência e idosas em Minas Gerais como efetivação da Proteção Social Básica. Apresenta-se como referência teórica para esta pesquisa conceitos e interpretações de políticas públicas, adentrando-se a ideia da Política pública como ciclo com foco no processo de implementação, seguido da apresentação do Sistema Único de Assistência Social - SUAS com destaque para o Serviço no Domicílio PSB e os marcos normativos sobre a População Idosa no Brasil e também sobre a pessoa com deficiência.Para alcançar o proposto empregou-se uma abordagem metodológica qualitativa e de natureza descritiva fundamentada em dados secundários. Os dados foram coletados por meio de análise documental do relatório anual do Censo Suas, referente ao ano de 2022. Os dados demonstraram que 65,6% dos municípios de Minas Gerais não implementaram o Serviço no Domicílio PSB para PcD e idosas e os que o oferecem não o fazem conforme as orientações técnicas organizadas pelo Ministério do Desenvolvimento Social, em 2017. Além disso, 82,6% dos Centro de Referência de Assistência Social (CRAS) que oferecem o Serviço não contam com rede referenciada e 75,6% não possuem equipe técnica de apoio. Também foi identificada baixa adesão às práticas recomendadas, além da falta de estruturação do plano de desenvolvimento do usuário. A partir dos resultados, depreende-se haver lacuna na implementação do Serviço, apontando a necessidade de revisão das ações oferecidas pelos municípios de Minas Gerais, com finalidade de aprimorar os métodos adotados para garantir a conformidade da política com as orientações técnicas. Isso possibilitaria atender de forma mais efetiva às necessidades da população e promover uma ação mais eficaz. Como contribuição prática o exercício desta pesquisa resultou numa cartilha com informações sobre o Serviço no Domicílio PSB e orientações para o processo de implementação pelos municípios, visando fortalecer o Serviço por meio de uma cobertura abrangente e igualitária. Palavras-chave: Proteção Social Básica; Pessoa Idosa; Pessoa com Deficiência; Políticas Públicas; Implementação.
Responsible Big Data Analytics for Enhancing E-Business Services
Authors:   School of Business, PNG University of Technology, Lae 411, Papua New Guinea, Sun Zhaohao
Published: August 2024

This article examines responsible big data analytics for e-business services and looks at how we can use responsible big data analytics to enhance responsible e-business services.
Management Audit System in Public and Private Sector Companies - A Comparative Study
Authors: Dr. Lakshmi S  , Dr. Kalaivani K N
Published: August 2024

The globalisation of economies has resulted in business organisation growing rapidly. In the process of growing, companies are finding it difficult to manage with traditional Operational and Financial audit to assess the overall performance. This specific necessity of evaluating the performance of the organisation has resulted in companies introducing Management Audit System in their organisations along with other types of audits such as Financial Audit, Operational Audit, Social Audit etc. Management Audit is an audit to examine, review and appraise the various policies and actions of the management based on certain objective standards. Management Audit is essentially a review of the performance of various activities or functions. It evaluates the actual performance and compares with the pre-determined targets. Management Audit has wider scope in an emerging country like India. Indian companies are competing with world renounced companies within the country as well as outside. These facts make the Indian companies adopt Management Audit System in their organisations, so that they achieve what they planned. Indian companies need a constructive appraisal of the process of management and its operations. Keeping these facts in mind, it was decided to compare the implementation of Management Audit System in public and private sector companies to know if there are any visible unique features between these types of organisations and also to know which variable contribute for the success or failure of these companies. It is also planned to assess it there is significant difference between public and private sector companies in terms of variables included under Management Audit System.
Study of Www.W3schools.Com Website for Programmer
Authors: Dr. Marathe Dagadu Mitharam
Published: August 2024

In this research paper researcher study about importance of W3school.com website for programmer. The purpose of this research is to investigate various predictions with a view towards forming conclusion regarding the hypothesis that the W3school.com website for programmer. One such online programming learning website which caters to all such needs of programmers is W3Schools website. The URL for it is www.W3Schools.com. W3schools is a school for programmers, covering all the aspects of web development programming W3Schools is the largest web developer programming site on the internet Billion pages displayed each year. 60Million visitors each month. W3Schools create simplified and interactive learning experiences. Learning should be easy to understand and available for everyone everywhere is the motto of W3Schools. W3Schools is a freemium educational website for learning coding online.
Navigating Social Media Usage and Perceived Behavioural Control in Lowering Youth’s Moral Decadence
Authors: Abu Bakar Muhammad Nabihan , Abdullah Muhammad Hakimi Tew , Mohd Mothar Noor Mayudia , Yahya Masliya
Published: August 2024

The development of the Internet shifted people's attention away from traditional media and towards new media. People utilize an abundance of social media platforms to remain informed about news, including Facebook, Instagram, TikTok, X (previously known as Twitter), and others. However, modern technology allows users to look for information on economic, political, and entertainment issues. Thousands of bytes of data were released worldwide to inform and draw attention. Youth's perceptions of the media usage's credibility were being questioned as a result of the unchecked news spreading through the social media platform. Hence, this study was conducted quantitatively and data were collected via an online survey consisting of 80 questions and were analyzed using SPSS. A total number of 44 undergraduate students from Universiti Teknologi MARA (UiTM) Negeri Sembilan was selected as a sample for this pilot study. An Exploratory Factor Analysis (EFA) was also conducted to assess the number of constructs or factors involved, as well as item quality, item loading factors, and construct validity. The result shows that the items involved in measuring the variable were reliable and normally distributed. The reliability test reveals that the internal consistency is considered excellent except for two factors (Cronbach’s alpha = .70), which is considered good.
THE EFFECT OF HEALTH EDUCATION ON CLIENT KNOWLEDGE ABOUT PREVENTION OF HYPERTENSION
Authors: Tobing Jack Robertus , Tuegeh Johana , Bobaya Janbonsel , Djafar Nurseha S. , Kiling Maykel Alfian , Kusmiyati Kusmiyati
Published: August 2024

Background: Hypertension is a condition where a person experiences an increase in blood pressure, which results in an increase in morbidity and mortality. The purpose of the study was to determine the effect of health education on client knowledge about the prevention of hypertension. Methods: This study uses a type of literature review research, namely a study in the form of a literature review using the results of previous studies as well as textbooks or research journals. To obtain data that is in accordance with the topic, researchers conducted a search for national and international-based journals on two data bases, namely PubMed and Google Schoolar using the keywords health education, knowledge of hypertension, prevention of hypertension. The keywords used are listed in each journal title obtained, with the provisions of the journals searched since 2011-2020. The results obtained were 5 journals used for literature review. Conclusion: there is an effect of health education on client knowledge about hypertension prevention.