bluuebunny/crossref_metadata_2025 huggingface dataset:
SOCIAL POLICY AND SOCIAL WORK STUDENTS’ REFLECTIONS ON INTRODUCED MEASURES AND MEDIA COVERAGE DURING COVID-19 PANDEMIC
Authors: Burgund Isakov Anita , Marković Violeta , Polić Penavić Sanja
Published: June 2023

Introduced measures to deal with COVID-19 pandemic in Serbia affected everyday life of people. Media coverage during the pandemic played a significant role in providing verified information, protecting human health and well-being. In order to gain insight into the reactions of social work students on introduced measures and media coverage about these measures during the state of emergency in Republic of Serbia, an analysis of reflective journals is presented. Eighty reflective journals were analyzed, where students’ reactions on introduced measures and media coverage related to these measures are monitored and linked to the electronic archive of the public media service Radio Television of Serbia news. Students’ thoughts on several identified measures are presented and analyzed together with their reactions on media coverage about these measures. Findings indicate the important role of the content and ways of media repor1 Anita Burgund Isakov, professor, e.mail: anita.burgund@fpn.bg.ac.rs 2 Violeta Marković, teaching assistant, e.mail: violeta.markovic@fpn.bg.ac.rs 3 Sanja Polić Penavić, researcher , e.mail: sanja.polic@fpn.bg.ac.rs Anita Burgund Isakov1 orcid.org/0000-0002-4547-4934 Violeta Marković2 orcid.org/0000-0003-2618-0073 Sanja Polić Penavić3 orcid.org/0000-0002-4295-190X Faculty of Political Science University of Belgrade Received: December, 2021. Accepted: October, 2022. UDK: 364.62-057.87: 616-036.21 DOI: 10.3935/ljsr.v29i3.478 Keywords: reflective journals;social work; education; media coverage; COVID-19; mental health. Ljetopis socijalnog rada 2022., 29 (3), 521-544. 522 članci ting in creation of reflections, as well as the importance of using reflective journals in both education and preservation of mental health. Possible directions of mental health improvement through media coverage in crisis situations and recommendations for education of social workers are presented. Key words: reflective journals, social work, education, media coverage, COVID-19, mental health.
IZAZOVI U UBLAŽAVANJU SIROMAŠTVA: KOMPARATIVNA ANALIZA SUSTAVA MINIMALNOG DOHOTKA HRVATSKE I SLOVENIJE
Authors: Babić Zdenko
Published: June 2023

CHALLENGES IN POVERTY ALLEVIATION: A COMPARATIVE ANALYSIS OF THE MINIMUM INCOME SYSTEMS IN CROATIA AND SLOVENIA ABSTRACT Minimum income systems in the countries of the European Union are an important instrument in the policy of fighting poverty. Although in several strategic documents of various EU institutions, member states are invited to improve their minimum income systems and the recommendations how to do it are included, in a large number of EU countries, including Croatia, the aforementioned recommendations are still awaiting implementation. Therefore, the main goal of this work is to achieve a deeper insight into the potentials and challenges of the minimum income system in their focus on poverty alleviation and better social integration of their users in Croatia and Slovenia through a comparative analysis of the minimum income systems in Croatia and Slovenia. For the comparison and evaluation of the minimum income systems, numerous indicators will be analysed, such as the rate of adequacy of the minimum income and the rate of coverage of the poor by the minimum income for the period from 2018 to 2020. Elements of the availability of the minimum income system to citizens will be analysed, such as the complexity of the application process and the complexity of the method of checking income and assets, the so-called means test. At the end, after the analysis, certain recommendations for improving the minimum income system in the Republic of Croatia will be presented. Key words: minimum income; poverty; social exclusion; social integration
Investigation of VGG-16, ResNet-50 and AlexNet Performance for Brain Tumor Detection
Authors: Ton Komar Azaharan Tun Azshafarrah , Mahamad Abd Kadir , Saon Sharifah , Muladi  , Mudjanarko Sri Wiwoho
Published: June 2023

A brain tumor is a very common and devastating malignant tumor that leads to a shorter lifespan if not detected early enough. Brain tumor classification is a critical step after the tumor has been identified to create an effective treatment plan. This study aims to investigate the three deep learning tools, VGG-16 ResNet50 and AlexNet in order to detect brain tumor using MRI images. The results performance are then evaluated and compared using accuracy, precision and recall criteria. The dataset used contained 155 MRI images which are images with tumors, and 98 of them are non-tumors. The AlexNet model perform extremely well on the dataset with 96.10% accuracy, while VGG-16 achieved 94.16% and ResNet-50 achieved 91.56%. These accuracies positively impact the early detection of tumors before the tumor causes physical side effects such as paralysis and other disabilities.
Transfer Learning-Based Osteoporosis Classification Using Simple Radiographs
Authors: Dodamani Pooja S , Danti Ajit
Published: June 2023

Osteoporosis is a condition that affects the entire skeletal system, resulting in decreased density of bone mass and the weakening of bone tissue's micro-architecture. This leads to weaker bones that are more susceptible to fractures. Detecting and measuring bone mineral density has always been a critical area of focus for researchers in the diagnosis of bone diseases such as osteoporosis. However, existing algorithms used for osteoporosis diagnosis encounter challenges in obtaining accurate results due to X-ray image noise and variations in bone shapes, especially in low contrast conditions. Therefore, the development of efficient algorithms that can mitigate these challenges and improve the accuracy of osteoporosis diagnosis is essential. In this research paper, a comparative analysis was conducted Assessing the accuracy and efficiency of the latest deep learning CNN model, such as VGG16, VGG19, DenseNet121, Resnet50 and InceptionV3 in detecting to Classify Normal and Osteoporosis cases. The study employed 830 X-ray images of Spine, Hand, Leg, Knee, and Hip, comprising of Normal (420) and Osteoporosis (410) cases. Various performance metrics were utilized to evaluate each model, and the findings indicate that DenseNet121 exhibited superior performance with an accuracy rate of 93.4% with Achieving an error rate of 0.07 and a validation loss of only 0.57 in comparison with other models considered in this study.
La pédagogie des compétences dans le primaire catholique ivoirien
Authors: N’sanman Rodrigue
Published: June 2023

Du fait de la mondialisation en Afrique subsaharienne, une entreprise managériale est à l’œuvre dans ses espaces scolaires. L’efficacité requise par la Banque Mondiale, c’est l’école formatée par la pédagogie des compétences. Au regard de ses rendements, le primaire catholique ivoirien apparaît exemplaire. Son personnel enseignant semble faire preuve d’un certain zèle, malgré des conditions jusqu’ici précaires. Ce phénomène conforte la posture managériale de la hiérarchie qui laisse croire à une simple docilité des salariés. Mais à l’analyse, cette réalité est loin d’être évidente. Dans les faits, pour être efficaces, les enseignants tordent par endroits le prescrit. Ils engagent dans leurs actes professionnels des raisons et valeurs singulières, pour une application alternative mais efficace de la pédagogie des compétences qui interroge sa prescription et son management.
Emotion Detection Using EEG-Based Brain-Computer Interaction
Authors: Das Sima , Kitmo  , Giri Nimay Chandra
Published: June 2023

The study of emotional behavior has always been a challenging area of research. While traditional methods have relied on self-reported measures, recent advancements in technology have enabled researchers to investigate emotional behavior through the analysis of brain activity, specifically using electroencephalography (EEG). In this study, we aim to investigate the relationship between EEG signals and emotional behavior. The experiment involved 20 participants who were presented with a series of emotionally charged images while their EEG signals were recorded.
The Rise of Deepfake Technology
Authors: Akbar Mohd , Suaib Mohd , Hussain Mohd Shahid
Published: June 2023

Deepfake technology is an emerging technology prevailing in today's digital world. It is used to create fake videos by exploiting some of the artificial intelligence (AI) based techniques and deep learning methodology. The facial expressions and motion effects are primarily used to train and manipulate the seed frame of someone to generate the desired morphed video frames that mimic as if they are real. Deepfake technology is used to make a highly realistic fake video that can be widely used to spread the wrong information or fake news by regarding any celebrity or political leader which is not created by them. Due to the high impact of social media, these fake videos can reach millions of views within an hour and create a negative impact on our society. This chapter includes the crucial points on methodology, approach, and counter applications pertinent to deep-fake technology highlighting the issues, challenges, and counter measures to be adopted. Through observations and analysis, the chapter will conclude with profound findings and establishes the future directions of this technology.
Computational Intelligent Systems for Crop and Soil Monitoring Through Digital Imaging
Authors: S. V. Mahesh Kumar , Parvathi Sreya U.
Published: June 2023

The world's population is predicted to grow by nearly 10 billion in the year 2050, which increases the food and agricultural demands. Hence, farmers worldwide are under continuous pressure to increase crop yield to satisfy the increasing food demand. To support the farmers in food production, crop monitoring and soil management are essential tasks. The traditional human observation-based crop and soil monitoring require more time and manpower. Hence, there is a need for smart crop and soil monitoring systems. This chapter is focused on different digital imaging-based Artificial Intelligence (AI) approaches such as machine learning, and deep learning that are used for smart crop and soil monitoring. There has been limited research work on the usage of smart intelligent techniques in crop and soil monitoring. This chapter attempts to identify the research gap in smart crops and soil monitoring. Future research trends would focus on integrating hybrid AI and reinforcement learning techniques for agricultural monitoring and management.
IoT-Based System for Crop Protection From Animals
Authors: Arjaria Siddhartha Kumar , Verma Aman , Kumar Arvind , Maurya Ashwani Kumar , Panth Praveen Kumar
Published: June 2023

No one can imagine a world without agriculture. Due to overpopulation and deforestation, animal interference in residential areas is increasing day by day affecting human life and property, and causing human-animal conflict. At the present time, farmers in India and other countries are facing a serious threat from wildlife animals which causes less production in crop yielding. It is not possible to stay in the field for 24 hours to guard the crops against animals. In spite of good production, the crops on farms are many times ravaged by animals and it leads to huge losses for the farmers in terms of production, effort, quality, and money. To overcome this problem, an IoT-based crop protection system is being proposed in the present work. The system uses a microprocessor and a set of sensors to detect wild animals approaching near the field. The sensor data is analyzed through a machine learning algorithm and helps the microprocessor to take action. This system helps farmers to protect their crops from animals.
Smart Non-Invasive Approach for Workspace Rating Assessment
Authors: Swain Adyasha
Published: June 2023

This study describes the development and examination of a customized post-occupancy evaluation (POE) software application to improve FM and students' exposure to and use of real-time data. To adapt that facility management could involve students in class activities and enhance their perception of the validation process, it is necessary to demonstrate that gathering info in real-time and exploiting is feasible. A mobile application was built to gather information on occupants' perceptions and likewise, real-time realignment of the data store. Physical parameters were used to guide the selection of lighting and space usage parameters that corresponded with perceived indoor conditions. During the pilot project, an immediate representation of the gathered data was given, illustrating how the POE app functions and what more statistical assessment can be done further. The prototype's use in a real-world university building demonstrates the system's adaptability, viability, and capacity for gathering and analyzing real-time building performance data.
Constructing New Greener Infrastructures, Retrofitting, and Exploiting the Potential of Smart Technologies
Authors: Kanade Tarun Madan , Batule Radhakrishna
Published: June 2023

Humans made a common habit and became dependent on others, the main dependency is on mother nature and making the most of its benefits which are provided in the forms of food, clean water, clean air, climate regulation, materials, etc. The known fact that all these commodities are free of cost and in unlimited supply available, humans are using them in abundant quantity without giving anything in return for retaining it, and this is not at all appreciated by intellectual humans. This is giving rise to humans who are nature lovers creating some alternative or substitute for such nature. This can be termed as natural building or rebuilding the green environment. Day-to-day innovations in science gave rise to smart technologies which can be used in building and maintaining green infrastructure. As known to all that the GI can be implemented in multiple sectors at various locations, the authors will be highlighting the sites where it can be implemented, which related technology will be used in deploying such GI, and what will be their benefits to humans.
Cybersecurity of Medical Data Based on Big Data and Privacy Protection Method
Authors: Li Jianhong , Pan An , Zheng Tongxing
Published: June 2023

Big data brings new opportunities to discover the new value of healthcare industry, since it can help us understand the hidden value of data deeply. This also brings new challenges: how to effectively manage and organize these datasets. Throughout the whole life cycle of publishing, storing, mining, and using big data in health care, different users are involved, so there are corresponding privacy protection methods and technologies for different life cycles. Data usage is the last and most important part of the whole life cycle. Therefore, this article proposes a privacy protection method for large medical data: an access control based on credibility of the requesting user. This model evaluates and quantifies doctors' credibility from the perspective of behavioral trust. Comparative experiments show that under the background of linear, geometric and exponential distribution trends and mixed trends, the regression model in this article is better than the existing methods in predicting trust accuracy and trust trends.
The 4IR-Health Service Delivery Nexus
Authors: Niyitunga Eric Blanco
Published: June 2023

The delivery of quality healthcare services to citizens is not only a constitutional right, but also the task and obligation of every government. However, bribery, lack of financial accountability and counterfeit drugs, a shortage of human resources, poor hygiene and ineffective infection control measures, and poor medical record keeping have been identified as major challenges for the implementation of a successful public healthcare system. Fraudulent orders, tender irregularities, fiscal dumping, and over-pricing have also been identified as additional challenges. Due to the lack of quality healthcare services, people have lost trust and hope in the African National Congress (ANC). The paper found that to deliver adequate healthcare services, government needs to establish mechanisms that promote efficiency, quality, transparency, and safety. AI is a mechanism that can increase transparency, efficiency, and detect diseases before they become critical. The paper adopted a qualitative research methodology with an exploratory approach.
Field Evaluation of Selected Common Household Containers as Oviposition Attractants of Aedes Albopictus (Diptera: Culicidae
Authors: Weerakoon S. N. , Jayatunga D. P. W. , Ganehiarachchi G. A. S. M.
Published: June 2023

Dengue is a fatal arthropod-borne disease that affects humans worldwide. The mosquito Aedes albopictus (Skuse) is the secondary vector of dengue in Sri Lanka, however, studies on oviposition preferences of Ae. albopictus is scarce. The objective of the current study was to investigate the oviposition attraction of Aedes albopictus to selected household containers; black colour basins, metal cans, rain gutter parts, curd pots, coconut shells and yoghurt cups. For this, water containers for oviposition were placed in three outdoor shady sites and at three different heights. The mosquito larvae were collected after 5 days. The larvae were reared to adult stage and then they were identified and enumerated. Wing lengths of adult female mosquitoes that developed in different containers were measured. In the meantime, temperature, pH, dissolved oxygen (DO) and total dissolved solids (TDS) were measured in each container. The Ae. albopictus larval density was higher in coconut shells. The maximum mean number of mosquito larvae was observed in the containers at ground level. The oviposition attraction of Ae. albopictus was increased with the aging of coconut shells and old coconut shells were preferred than new coconut shells. Highest TDS level and neutral pH were observed in coconut shells which support the mosquito oviposition. The highest wing lengths were observed in female Ae. albopictus that developed in curd pots, representing higher fecundity. In conclusion, discarded coconut shells and curd pots should be carefully managed as means of eliminating dengue vector mosquito breeding sites.
Prevalence and associated factors of post-stroke depression among stroke survivors during the early rehabilitation period: a cross-sectional study
Authors: Harini S. A. T. , Suraweera C.
Published: June 2023

Background: Post-stroke depression (PSD) is the commonest psychiatric morbidity observed among stroke survivors and it has a significant negative impact on the rehabilitation process.
Aims: This study aimed to identify the prevalence of PSD, its associated factors, and the relationship between the severity of depression and functional impairment among stroke survivors during the first six months of rehabilitation.
Methods: A descriptive cross-sectional study using a convenient sampling method was carried out at the Rheumatology and Rehabilitation Hospital (RRH), Ragama, among patients during the first six months following stroke. PSD was screened with Sinhala and Tamil translations of the Patient Health Questionnaire-9 (PHQ-9) and functional ability was measured using the validated Lawton Instrumental Activities of Daily Living (IADL) scale. Pearson’s correlation coefficient, ANOVA, independent-sample t-test, and binary logistic regression were used for statistical analysis.
Results: Among 70 participants of ages 33-79 years (mean ± SD: 56.3 ± 11.31) depressive symptoms were observed among 74.3%. A negative correlation (- 0.428) was observed between PSD and functional ability. There was a statistically significant association (p<0.05) between PSD and female gender, stroke affecting the dominant side of the body and previous history of stroke. A low score on IADL (OR = 0.506, 95% CI: 0.274 - 0.936) and stroke affecting the dominant side of the body (OR = 0.013, 95% CI: 0.01 - 0.270) was observed to be significant risk factors to be screened positive for major depression as per the PHQ-9.
Conclusion: We detected a high prevalence of PSD among the participants as per the PHQ 9 and a negative correlation between PSD and functional ability. Screening for depression and appropriate management of PSD in stroke survivors should be practised during the early rehabilitation period.
An online survey on the psychological impact of the COVID-19 pandemic among internet users in Sri Lanka
Authors: Amarakoon D. L. U. , Alles P. S. , Rohanachandra Y. M.
Published: June 2023

Background: The COVID pandemic has been reported to be associated with an increase in the rates of depression, stress, and anxiety among people worldwide.Aims: We conducted an online survey using the DASS-21 to detect levels of depression, anxiety and stress among internet users in Sri Lanka.Methods: An open online survey based on a Google form was conducted and the study instruments consisted of questionnaires on socio-demographic details, coping strategies, and the original English and the validated Sinhala versions of the Depression Anxiety and Stress Scale (DASS-21).Results: We found that the prevalence of depression, anxiety, and stress among internet users in Sri Lanka were higher than those reported during pre-pandemic times. Financial loss (p<0.05) and difficulty in accessing essential items (p<0.05) was associated with depression, stress, and anxiety. Younger age, unemployment, being single and not having children were associated with depression and anxiety (p<0.05), while female gender and working away from home were associated with stress (p<0.05).Conclusions: Measures that promote wellbeing are important to reduce the probable mental health impact of future lockdowns.
Obsessions, compulsions, and intrusive thoughts in the perinatal period
Authors: Chandra P. S. , Lotlikar S. R.
Published: June 2023

Perinatal intrusive thoughts, obsessions, and compulsions are often neglected or misidentified, compared to postpartum depression and anxiety. These symptoms have a unique presentation and progression during the perinatal period. Both mothers and fathers of newborns may experience intrusive thoughts particularly in the early postpartum phase. New mothers may feel guilty and ashamed about having such thoughts especially if they are related to intentions of harm to their baby. While many have intrusive thoughts alone, some mothers may develop a perinatal obsessive compulsive disorder (OCD). The detrimental effects of perinatal obsessions and compulsions may extend beyond the mother’s quality of life and functioning, also affecting mother-infant bonding and consequently the infant’s development. Clinicians need to assess these thoughts sensitively and provide multidisciplinary care that takes into account the mother, the infant and the family.
Simulation and Analysis of NASA Lift Plus Cruise eVTOL Crash Test
Authors:   NASA Langley Research Center, Putnam Jacob , Littell Justin
Published: June 2023

The National Aeronautics and Space Administration (NASA) conducted a full-scale crash test of a representative electric vertical take-off and landing (eVTOL) fuselage in November 2022. The test article was a carbon-composite fuselage cabin section of the six-passenger lift plus cruise (LPC) eVTOL design concept which was created by NASA researchers to advance understanding of eVTOL propulsion, noise, and safety. The fuselage cabin section was impacted onto a concrete surface with a combined horizontal and vertical velocity approximating a severe but survivable crash landing. This test was conducted to generate data to help inform eVTOL crashworthiness regulation development, evaluate the use of energy absorbing (EA) concepts within vehicle design, and quantify the predictive accuracy finite element (FE) modelling techniques used in crashworthiness predictions. The response of the eVTOL representative fuselage when subjected to dynamic impact loading was evaluated through structural instrumentation, anthropometric test devices (ATDs), and high-speed photogrammetry. The development of a representative FE model of the test article and comparison between model to test results is described within this manuscript to quantify the capability of these tools to predict crashworthiness of the carbon-composite eVTOL airframe.
Comparison of Reality versus Integrated Reality during In-Flight Maritime Helicopter Hover Manoeuvres
Authors:   National Research Council of Canada, Law Andrew , Comeau Perry , Wall Alanna , Jennings Sion , Craig Gregory , Kumar Sukriti , Ellis Kris , Gubbels Arthur
Published: June 2023

The National Research Council of Canada (NRC) recently developed an Integrated Reality In-flight Simulator (IRIS) allowing helicopter pilots to fly the NRC's Bell 412 helicopter while wearing a virtual reality headset and experiencing real-world multi-sensory cues. The first IRIS prototype simulated maritime helicopter ship-deck landing operations to augment current flight test and flight training methods. Two NRC test pilots evaluated the IRIS prototype using a customized mission task element (MTE) that represented maritime helicopter hover manoeuvres under three different Visual Cueing Environments (VCEs). Pilot performance and workload was evaluated in each cueing environment along with the effect of simulated airwake turbulence. Both pilots successfully completed the MTE using the Reality Field VCE with moderate workload, but found the Integrated Reality (IR) Field VCE to be higher workload due to poor VR resolution of subtle cues required for longitudinal positioning. By comparison, the pilots successfully completed the MTE using the IR Ship VCE with similar performance levels to the Reality Field. This evaluation demonstrated that the IRIS prototype is suitable for in-flight simulation of shipboard helicopter manoeuvres.
Initial Whirl-Flutter Characterization of the TiltRotor Aeroelastic Stability Testbed
Authors:   US Army CCDC ARL, Kreshock Andrew ,   NASA Langley Research Center, Piatak Dagid , Thornburgh Robert , Wilbur Matthew , Kang Hao , Sekula Martin
Published: June 2023

This paper discusses the initial wind tunnel test of the TiltRotor Aeroelastic Stability Testbed (TRAST). TRAST is a generic tiltrotor testbed developed in collaboration between NASA and the Army. Ultimately, this test was a checkout of the model systems, functionality and familiarization, but also obtained subcritical whirl-flutter data in the terms of frequency and damping. Flutter data include two main configurations with different pitch spring stiffness, referred to as 4k and 8k, that were tested at various rotor speeds and airspeeds at the NASA Langley Transonic Dynamics Tunnel. The test included two modes of drivetrain operation: powered and windmilling. However, powered mode of operation was only conducted with the 8k pitch spring. This test reinforced the traditional knowledge of whirl-flutter trends such as flutter speed would decrease with an increase in rotor speed. The critical mode consistently being the wing vertical bending mode. The chord mode as expected was not affected by the pitch spring and was likely to go unstable at a tunnel airspeed slightly beyond the wing vertical bending mode. There were also test specific challenges such as the TRAST modal damping was more sensitive to temperature and amplitude motor than was expected. This test gathered valuable data on the baseline characterization of TRAST, how to improve the model and test practices for future wind tunnel testing. Additionally, a new more automated method for experimental subcritical damping determination based on the Stockwell transform has been demonstrated that may lead to more consistent whirl-flutter stability boundaries.
Flight Testing of Automated Rotor Track and Balance using Active Trim Tab and Pitch Control Rod Technologies
Authors:   Sikorsky a Lockheed Martin Company, Vanacore Ray ,   DEVCOM AvMC, DiOttavio Jim ,   Beta Technologies, Reilly Patrick , Bates Preston
Published: June 2023

An innovative prototype in-flight automated rotor track and balance (RTB) system using advanced algorithms to command active rotor blade trim tabs and pitch control rods was demonstrated in a full-scale UH-60M flight test conducted by the U.S. Army. The primary technical objective was to reduce main rotor one per revolution (1P or 1/Rev) vibrations and maintain them at or below vibration acceptance levels throughout the entire flight envelope and achieve this in the presence of blade anomalies that create rotor imbalances. A secondary objective was to minimize higher harmonic vibration at two per revolution (2P or 2/Rev) and three per revolution (3P or 3/Rev) frequencies, without negatively impacting 1P. The flight test demonstration showed the system successfully met the desired performance objectives with the necessary characteristics to operate safely under normal flight conditions.
eVTOL Modeling Framework for Future Level-D Training Simulators
Authors:   CAE Global Engineering, Myrand-Lapierre Vincent , Ferlisi Carlo , Guay Julien , Milne Jaclyn
Published: June 2023

This paper presents an adapted aerodynamics modeling framework that will be used to develop future Level-D flight training simulators for electric Vertical Takeoff and Landing (eVTOL) aircraft. It enables physics-based multi-rotor models to simulate accurate stability and control characteristics defined by aircraft requirements or determined from system identification techniques using flight test data. For this study, parameter estimation in the frequency domain is used to generate linear state-space 6 degrees of freedom (6-DoF) quasi-steady models from a non-linear physics-based simulation model. A common model structure is formulated to handle the two principal flight configurations, wing-borne and thrust-borne flight, and the transitions between the two. As with fixed wing and rotary wing flight simulators, eVTOL simulators are expected to be qualified using updated Qualification Test Guide (QTG) requirements prior to providing pilot training for these vehicles. This paper focuses on how CAE's modeling framework can be used to develop a platform-agnostic real-time aircraft performance and handling model for pilot training.
An Overview of the Proprotor Performance Test in the 14- by 22-Foot Subsonic Tunnel
Authors:   NASA Langley Research Center, Zawodny Nikolas , Pascioni Kyle , Thurman Christopher
Published: June 2023

This work experimentally investigates the aerodynamic behavior of proprotors across a wide range of angles of attack. These flight conditions are intended to be representative of Urban Air Mobility (UAM) vehicle platforms that utilize articulating propulsors to transition from a vertical takeoff and landing (VTOL) phase typical of a conventional rotorcraft to an axial mode of forward flight typical of a fixed-wing aircraft. These data are used to identify the potential limits of lower-fidelity aerodynamic modeling tools, as well as to inform future acoustic phases of testing. Tests were conducted on two proprotor designs in the NASA Langley 14- by 22-Foot Subsonic Tunnel using an articulating propeller test stand. Hover results identified unique flow physics on one of the proprotors, including severe outboard flow separation and perpendicular blade-vortex interactions on the outboard portions of the blades. Transition and forward flight conditions yielded informative trends in terms of both on- and off-axis forces and moments against which low-fidelity prediction models were compared.
Dynamic Load Analysis of an eVTOL Aircraft Propulsion System
Authors:   Hexagon MI, Wang Dexin , Peeples Jennifer , Valente Geirgui , Johnston Andrew , Riache Younes , Mahmoud Hanafy
Published: June 2023

Electric Vertical Take-Off and Landing (eVTOL) aircraft are considered as a solution to support urban transportation, including cargo delivery (Unmanned Aerial Vehicles, UAVs) and passenger travel (Urban Air Mobility, UAM). Over the last few years many different concepts have been derived and tested to varying levels of maturity. The race for the most efficient, safe and reliable system solution ongoing, with many new challenges in the propulsion system and energy storage technology and design space, including specifically the power electronics, electrical machine (e-machine) and transmission design and verification.This paper presents an integrated '3in1' eVTOL e-Propulsion concept that has been developed utilizing a novel, integrated, model-based system engineering (MBSE) workflow that is enabled via newly developed model-translation capabilities and software interfaces. It starts with the design of the drivetrain based on a steady-state approach with low computational effort, which is then rapidly translated into a multibody model and directly coupled to a high-fidelity behavioral model of the e-machine, the inverter and control system, to represent reaction loads with even higher fidelity. The resulting holistic model can be used for assessing performance, efficiency and robustness, including various foreseeable dynamic loads such as turbulence. It was found that this workflow was valuable in supporting the risk-reduction exercise during the development of a complex aerospace propulsion system, promoting reliability and safety engineering methodology from the outset.
Assessment of Numerical Approaches for Modelling Tilt-Rotor Ground Effect stability in Hover and Near Hover Conditions
Authors:   Leonardo Helicopter S.p.A., Porcacchia Federico , Riccardi Fabio , Mancini Andrea , Pecoraro Matteo , Ragazzi Andrea , Vigano Luca
Published: June 2023

The paper proposes a process which, starting from the outcomes of dedicated CFD high fidelity simulations, is able to synthetize accurate ground effect modeling for complex rotorcraft configurations (specifically addressing tilt-rotor case), suitable both for real time pilot in the loop and design/configuration trade-off analyses. The effect of complex aerodynamic interactions between the rotor wakes, nacelles, fuselage, wing, and ground may consistently alter the rotorcraft dynamic response. In this regard, specific design choices as shape and dimensions of movable nacelle parts, rotor blades twist and thickness, wing and tail geometry may have consistent impact on the nature of the rotorcraft aeromechanic response, especially for near-ground operations, with consequent need to capture such phenomena at early stage of design. This picture is even more complex in case of Fly-By-Wire configurations where control laws, generally synthetized out of ground effect, should guarantee their effectiveness in ground effect as well. Specifically, the paper addresses the development of a ground effect modeling based on the outcomes of high fidelity aerodynamics (addressing Next Generation Civil Tiltrotor Technology Demonstrator NGCTR-TD) in the framework of FLIGHTLAB tool. Then, the effects of proposed modeling strategies on the bare aircraft and closed loop system are assessed in terms of the rotorcraft trim conditions and stability features. Investigation of the complete workflow toolchain, starting from aerodynamics modelling up to physical trends and control laws impact analysis provided the opportunity to consolidate an industrial based optimized approach, that carefully merge feasibility/time consumption/accuracy requirements, thanks to which both pilot in the loop simulation and design trade-off analysis are accomplished together, increasing the level of safety of flight for novel rotorcraft configuration.
Handling Qualities of Multirotor RPM-Controlled Electric-Vertical Take-Off and Landing (eVTOL) Aircraft for Urban Air Mobility (UAM)
Authors:   NASA Ames Research Center, Malpica Carlos ,   NASA Langley Research Center, Suh Peter , Withrow-Maser Shannah , Aires Jeremy , Schuet Stefan , Ruan Allen , Barnes Kyle , Hanson Curt , Armstrong NASA , Foster John
Published: June 2023

A paradigm shift in rotorcraft design is being led by the prospect of propulsive forces being distributed across multiple rotors, such that each rotor can be directly driven by a dedicated electric motor. Crucially, some designers attempt to utilize these direct-drive mechanisms as the sole form of primary flight control. The feasibility of this design choice remains to be proven at the scales required for passenger transport. The paper presents a preliminary handling qualities analysis, for a six-passenger (1,200 lb payload) electric Hexacopter conceptual design, which shows that Level 1 handling qualities for limited agility operations are possible, provided that electric powertrains can deliver transient peak torques twice as high as the rated continuous torque of the conceptual design. Preliminary predictions are then substantiated by the results from a piloted handling qualities evaluation conducted in the NASA-Ames Vertical Motion Simulator (VMS). Three eVTOL configurations (a quadrotor, a hexacopter and a lift+cruise) with flight control laws implementing different levels of stability augmentation (Attitude Command-Attitude Hold and Translational Rate Command response types) were evaluated in four low speed and hover tasks requiring various levels of agility and precision.
Pilot Modeling and Sensitivity Analysis for Rotorcraft-Pilot Couplings Robust Design
Authors:   Politecnico di Milano, Mancini Pierfilippo , Zanoni Andrea , Muscarello Vicenzo , Quaranta Giuseppe
Published: June 2023

To better understand the underlying physics of rotorcraft-pilot coupling events on the collective control chain, a hybrid modeling approach is proposed for the biomechanical response of the pilot's body. A condensed modal representation of the two most relevant mode shapes, obtained from multibody simulations, is employed alongside a physical representation of the loading factors. The enhanced pilot model response in the closed-loop system is compared to the established, one degree of freedom approach by coupling the pilot model to a simplified representation of the helicopter vertical dynamics, comprising the effects of the heave and collective flap degrees of freedom. The stability of the close-loop system is evaluated on the loop transfer function through the gain and phase margins. It is found that the added dynamics, even though it is not evident in the experimental biodynamic feedthrough transfer functions, has a non-negligible effect on the closed-loop stability of the pilot-vehicle system. The effect of the landing gear dynamics and of non-minimal muscular activation contribution on the closed-loop stability is also assessed.
Management of anticoagulation in atrial fibrillation patients in Italy: insight from the Atrial Fibrillation-Survey on Anticoagulated Patients Register (AF-START)
Authors: Poli Daniela , Ageno Walter , Antonucci Emilia , Bradamante Salvatore , Bucherini Eugenio , Chiarugi Paolo , Chistolini Antonio , Cosmi Benilde , Falanga Anna , Insana Antonio , Lione Domenico , Lombardi Rosa Maria , Malcangi Giuseppe , Marcucci Rossella , Martini Giuliana , Masciocco Lucilla , Paparo Carmelo , Pastori Daniele , Pedrini Simona , Pengo Vittorio , Pignatelli Pasquale , Toma Andrea , Testa Sophie , Palareti Gualtiero
Published: June 2023

The survey on anticoagulated patients register (START-Register) is an independent, prospective, inception-cohort observational study aimed at providing information on patients on vitamin K antagonists (VKAs) or direct oral anticoagulants (DOACs) in Italy. In this study, we describe the cohort of atrial fibrillation (AF) patients in the START-Register and report outcomes and changes in anticoagulant prescription from 2011 to 2021. The study included 11,078 AF patients, enrolled in 47 Italian centers distributed all over the Country; the median age was 77 years (range 18-99 years); 6029 (54.3%) were men; 5135 (46.4%) were on VKAs, and 5943 (53.6%) were on DOACs. Warfarin was the most prescribed VKA (98.4%), and apixaban was the most prescribed DOAC (31.6%). Among DOAC users, 4022 (67.7%) patients were naive to anticoagulation, and 2562 (43.1%) patients were treated with a reduced dose. DOAC patients were significantly older than VKA patients (median age 79 years vs 76 years respectively, P<0.001), but no gender difference was detected. The mean CHA2DS2VASc score was higher in DOAC users than in VKA users (3.7 vs 3.6; P=0.03). The mean HAS-BLED score was not different between the two groups. During follow-up, 542 bleeding events were recorded [2.44 per 100 patient-years (pt-yrs)]; 240 were major (1.08 per 100 pt-yrs), and 301 were clinically relevant non-major bleedings (1.34 per 100 pt-yrs). 146 thrombotic events were recorded during follow-up (0.66 per 100 pt-yrs). The total mortality rate was 3.5 per 100 pt-yrs; the mortality rate was 4.54 per 100 pt-yrs among patients on VKAs and 2.31 per 100 pt-yrs among patients on DOACs. During the last 10 years, in Italy, AF patient management has changed with the large spread of DOACs all over the Country. DOAC patients are frequently treated with reduced doses and show a lower mortality rate in comparison to patients on VKAs.
Aristotle’s philosophical influence on Western civilization, history and theology placed women in inferior positions
Authors: Masango M.
Published: June 2023

This paper examines the influence of Aristotle on western civilization, and it explores how this line of thinking influenced religion from the point of view of its subordination of women. Then I examine how women were excluded from historical accounts and by this omission, were treated generally and regarded as inferior beings. Next I analyze the critical feminist reaction to this male patriarchal authorship, and then examined the research methods that patriarchal writers used with patriarchal reference to the “traditional model” (i e, male as a norm in society). I will finally examine certain oppressive scriptural passages, which oppress women and help men to regard them as property. The above concept helped feminist to research a new methodology of liberation, not only to liberate women but men as well.
Análisis de citación, co-citación y co-palabras de los medios de comunicación pública y ecosistema digital
Authors: López-Fraile Luis Antonio , Jiménez-García Eva , Alonso Guisande Miguel Ángel
Published: June 2023

Introducción: Este trabajo examina la producción científica relacionada con los medios de comunicación públicos en el mundo digital, debido al aumento de la última década. Metodología: Se seleccionan 292 referencias indexadas en Web of Science entre 2012-2022 y se realiza un análisis bibliométrico de citación, co-citación y co-palabras de la investigación científica sobre el tema. Resultados: El análisis de citación determina que los países con mayor número de citas sobre el tema son Bélgica, Estados Unidos, Inglaterra y Austria; la fuente con mayor número de citas es Journalism Studies; los documentos más citados son los de Van Dijck y Poell, (2015) y Aalberg et al. (2013) y los autores más citados son Shanto Iyengar y Hilde Van den Bulck. Según el análisis de co-citaciones, los trabajos más mencionados son los de Bardoel, (2003), Hallin y Mancini (2004) y Brevini, B. (2013), y los autores más citados son Hallin, D. C., Van den Bulck, H. y Benson, R. En ambos casos, los agrupamientos temáticos son: servicios de televisión pública, medios de comunicación y política e influencia de los medios de comunicación en la opinión pública. En cuanto a la co-citación de fuentes, destacan Media, Culture & Society; Journal of Communication y Revista Latina de Comunicación Social, entre otras. El análisis de co-palabras muestra las principales temáticas de investigación: comunicación de noticias, comunicación de masas, periodismo europeo y periodismo global. Discusión y conclusiones: Este estudio permite identificar las principales tendencias y fundamentos teóricos del campo estudiado, así como detectar las tendencias emergentes.
A Study on the Space Design of Compound Offline Bookstore: Centered on the KANO model
Authors:   Korea Institute of Design Research Society, Li Yu Quan , Kang Jae Cheol
Published: June 2023

This paper aims to investigate the functional space design of compound offline bookstores with t he objective of enhancing customer satisfaction. Against the backdrop of the internet era, this st udy examines the current status of compound offline bookstores in China and relevant research l iterature. It proposes that compound offline bookstores in China should consist of four main com ponents: an entrance guidance area, a book reading area, a leisure activity area, and a cultural c onsumption area. Through case analyses of Fangsuo Bookstore in Guangzhou and Chengdu, it is found that setting up an entrance guidance area with functions such as art exhibitions and lectur e activities is beneficial for attracting customers into the bookstore. Furthermore, Through a sur vey of 210 questionnaires targeting the consumer group, this paper proposes three suggestions f or enhancing and refining the segmentation of functional configurationswithin the four functional spaces, based on the KANO model theory.
A UI Design Study on Improving The Emotional Experience of Sports APP
Authors:   Korea Institute of Design Research Society, Wang Zi Yuan , Oh Yong Kyun
Published: June 2023

With the development of interactive application technology and the Chinese government's emphasis on sports, the use of sports applications by Chinese is also increasing. However, a large number of fitness APPs have emerged in the market at present, with serious homogenization phenomenon, resulting in the reduction the emotional experience of users. Therefore, this paper focused on extracting the basic elements of the UI design of the Sports APP from the perspective of emotional design, aiming to explore the influence and relationship between it and the user's re-use intention. In order to achieve this goal, this paper summarized the UI design of visual elements of Sports APP through the prior study, and then through the case analysis, questionnaire survey, data analysis to verify the influence of visual elements (color, layout, graphics) on functional elements (perception of ease of use, perception of usefulness) and emotional elements (re-use intention) of the UI design of Sports APP from theoretical and empirical aspects.The analysis results showed that the sensory elements of UI design of fitness APP will have more or less impact on the users 'perceived ease of use and perceived usefulness, and the perceived accessibility and usefulness will positively affect the users' willingness to continuously use the APP.Therefore, this study has reference value for the research on “the improvement of UI design of Sports APP” and “the emotional experience of users using Sports APP”.
A Study on the Sports Clothing Specialized Store with Interactive Application: Focusing on the impact on consumers' willingness to buy
Authors:   Korea Institute of Design Research Society, Zhang Hui Ping , Kang Jae Cheol
Published: June 2023

With the development and application of science and technology, Installation Art integrates new technology and media, and Interactive Installation, as a combination of traditional installation art and modern technology, is gradually applied in indoor space. The purpose of this thesis is to study the application of interactive devices in clothing store space, to analyze the effects of interactive devices on consumers' emotional experience and perceived usefulness. The results show that the interactive, experiential, technological and entertainment of the interactive devices in the clothing store space have positive effects on the emotional experience and perceived usefulness. This research can enrich the space form of clothing store and attract consumers to increase the possibility of consumer consumption, and provide some theoretical reference for the rational use of interactive devices in clothing store space.