bluuebunny/crossref_metadata_2025 huggingface dataset:
Rotor-on-Rotor Aeroacoustic Interactions of Multirotor in Hover
Authors:   Brigham Young University, Alvarez Eduardo , Critchfield Tyler , Ning Andrew , Schenk Austin
Published: July 2023

Multirotor configurations introduce complicated aerodynamic and aeroacoustic interactions that must be considered during aircraft design. In this paper we explore two numerical methods to model the acoustic noise caused by aerodynamic rotor-on-rotor interactions of rotors in hover. The first method uses a conventional mesh-based unsteady Reynolds-average Navier-Stokes (URANS) solver, while the second consists of a meshless Lagrangian solver based on the viscous vortex particle method (VPM). Both methods are coupled with an aeroacoustics solver for tonal and broadband noise predictions. Noise predictions are validated for single and multi-rotor configurations, obtaining with the VPMasimilar accuracy than URANS while being two orders of magnitude faster. We characterize the interactions of two side-by-side rotors in hover as the tip-to-tip distance and downstream spacing are varied. At an observer located six diameters away, multirotor noise is the strongest above and below the rotors, increasing by about 10 dBA directly underneath as the rotors are brought closer together. The interactions show no sensitivity to blade loading distribution, indicating that multirotor interactions are not alleviated with a lighter tip loading. We found that noise can be mitigated by spacing the rotors in the downstream direction - with the optimal spacing being about half a diameter - achieving a noise decrease of about 4 dBA without any aerodynamic penalties.
Computational Prediction of Broadband Noise from a Representative Small Unmanned Aerial System Rotor
Authors:   University of Maryland, Thurman Christopher ,   NASA Langley Research Center, Zawodny Nikolas , Baeder James
Published: July 2023

This work details the application of a lattice-Boltzmann method-very-large-eddy simulation (LBM-VLES) employed by the software suite, PowerFLOW. This LBM-VLES simulation predicted the aeroacoustic noise emanating from a representative, small unmanned aircraft system rotor, namely, the DJI-9450 in a hover condition. Predicted total aerodynamic loading as well as 2D aerodynamic loading along discrete spanwise sections of a rotor blade were compared to lower fidelity predictions and experimental results acquired in the Structural Acoustic Loads and Transmission anechoic chamber facility at the NASA Langley Research Center. The total acoustic spectra were decomposed into tonal and broadband components, which showed that broadband noise was a dominant contributor above 1 kHz for this rotor. These data were then compared to experimentally acquired data, showing good agreement up to approximately 11 kHz. Above 11 kHz, however, a grid sensitivity study showed dependency of the highest resolvable frequency on the spatial resolution of the computational domain, explaining the roll off in predicted data. Individual broadband noise sources were further investigated by calculating one-third octave sound pressure levels of the unsteady pressure fluctuations acting on the rotor, providing evidence that blade self-noise was the prominent noise source. Using these results, blade wake interaction noise was seen to be negligible for this particular rotor, which was further validated by calculating blade vortex miss distances and comparing to theory.
Coaxial Rotor Broadband Noise Prediction in Hover
Authors:   University of California Davis, Lee Seongkyu , Shlesinger Inbal
Published: July 2023

This paper presents an efficient prediction of coaxial rotor broadband noise, particularly trailing-edge noise. The method combines a newly developed iterative coaxial rotor BEMT, a viscous panel method, an empirical wall pressure spectrum, and Amiet's trailing-edge noise model. Aerodynamic data including the induced velocity and angle of attack on each rotor are calculated by the iterative BEMT. Then, turbulent boundary layer flows, such as the boundary layer thickness, skin friction coefficient, pressure gradient, etc., are computed by a viscous panel code, XFOIL. Based on these boundary layer parameters, the wall pressure spectrum near the trailing edge is computed by Lee's semi-empirical model. Finally, trailing-edge noise is predicted by Amiet’s model from the wall pressure spectrum. This method provides fast computations for aerodynamics and acoustics for coaxial rotors. Acoustic predictions can be performed for various design and operating conditions including the effect of rotor-to-rotor separation distance. In addition to the overall noise of the combined rotor system, each rotor's contributions to noise can be analyzed. A small-scaled untwisted rotor is selected to analyze aerodynamics and aeroacoustics. It is found that the noise contribution from each rotor is about the same at small separation distances. At large separation distances, the lower rotor generates higher noise levels than the upper rotor mainly due to the change in rotor distance with respect to the observer. The detailed boundary-layer flow properties are investigated on both rotors.
Hybrid glaucoma detection model based on reflection components separation from retinal fundus images
Authors: Mayaluri Zefree Lazarus , Lenka Satyabrata
Published: July 2023

The diagnosis of diseases associated to the retina is significantly aided by retinal fundus images. However, when flash illumination is used during image acquisition, specularity reflection can occur on images. The retinal image processing applications are popular now days in diseases detection such as glaucoma, diabetic retinopathy, and cataract. Many modern disease detection algorithms suffer from performance accuracy limitation due to the creation of specularity reflection problem. This research proposes a hybrid model for screening of glaucoma which includes a preprocessing step to separate specular reflections from corrupted fundus images, a segmentation step using modified U-Net CNN, a feature extraction step, and an image classification step using support vector machine (SVM) with different kernels. Firstly, the diffuse and specular components are obtained using seven existing methods and apply a filter having high emphasis with a function called similar in each component. The best method, which provides highest quality images, is chosen among the seven compared methods and the output image is used in next steps for screening of glaucoma. The experimental results of the proposed model show that in preprocessing step, maximum improvement in terms of PSNR and SSIM are 37.97 dB and 0.961 respectively. For glaucoma detection experiment the results have the accuracy, sensitivity, and specificity of 91.83%, 96.39%, and 95.37% respectively and AUROC of 0.971.
Fractional differentiability for elliptic double obstacle problems with measure data
Authors: Byun Sun-Sig , Song Kyeong , Youn Yeonghun
Published: July 2023

We consider elliptic double obstacle problems involving

p

-Laplacian type operators and measure data. We prove maximal fractional differentiability results in a completely linearized form under suitable differentiability assumptions on the obstacles. We also investigate fractional Sobolev–Morrey regularity for such problems under a density condition on the measures.
Maternidad y paternidad en el sistema privativo de libertad
Authors: Reyes-Quilodrán Claudia , Muñoz-Chiguay Maida , Calderón-Canales Daniela
Published: July 2023

El ejercicio de la maternidad y paternidad en personas privadas de libertad es una problemática que es latente en la población penal chilena. Sin embargo, los estudios en esta materia son limitados y no profundizan respecto al ejercicio de la paternidad y maternidad en prisión. Este estudio examina las similitudes y diferencias de padres y madres privados/as de libertad respecto a su rol paterno y materno. Se aplicaron entrevistas semiestructuradas a 294 interno/as. Se indaga respecto a las variables sociodemográficas, conducta delictiva, consumo y tratamiento de alcohol y/o drogas, salud mental, institucionalización en sistemas de protección infantojuvenil y/o justicia juvenil. Finalmente, se examina cómo ellos perciben el ejercicio de su rol parental. Los resultados muestran la existencia de un discurso contradictorio respecto a lo que es ser un buen padre o madre y el cómo ejercen su rol desde prisión. Su imagen de autoridad se ve afectada, pues generalmente es una tercera persona del círculo familiar quien se hace responsable de los cuidados de los hijos y/o hijas. Las formas de ejercer su rol entre hombres y mujeres son diferentes, pero ambos grupos se enfrentan a las disyuntivas respecto a su rol en prisión, aspecto necesario de abordar para prevenir daños en sus hijos.
Railways of India. An important stage of modernization is completed – unification of track width
Authors: Zakharov V. B. , Komarov E. E.
Published: July 2023

India, the Republic of India is a country of one of the world’s oldest civilizations, the largest state in the world by population — 1.42 billion people (end of 2022), occupying an area of over 3 million square kilometers. India, which has accelerated the pace of its socio-economic development in recent decades, is playing an increasingly important role in the international arena every year, including as one of the BRICS organizers. The state railways of India are managed by the Ministry of Railways of India represented by Indian Railways (99 % of the country’s railway network) and are, despite the dominance of motor transport, remain one of the main modes of transport. During the year, the railways of India transport more than 8 billion passengers (2nd place in the world after Japan), the staff of the railways of India will amount to 1.2 million people (the 7th employer in the world). Railway transport in India is developing intensively, in recent years, work has been intensified on the organization of high–speed traffi c on a number of lines of existing railways, the fi rst high-speed railway line Mumbai — Ahmedabad is being built with a normal gauge of 1435 mm with a length of 508 km, designed for a maximum train speed of 350 km/h. The authors of the article have repeatedly visited India, visited various railway enterprises, railway educational institutions — universities and institutes, met with industry leaders at the Ministry of Railways of India, traveled along the country’s railways along a number of routes with a total length of about six thousand km.
The Strategies of Post-COVID Age in Iranian Higher Education: A Qualitative Approach
Authors: Jafari Esmaeil
Published: July 2023

In the present study, the strategies of Iranian Higher Education Institutions (HEIs) in the post-COVID era have been considered. The research approach is qualitative and phenomenological, and accordingly, semi-structured interviews were conducted with 19 samples from two groups of chief executive officer and faculty members. Thematic content analysis method was used to analyze the qualitative data. The results showed that the strategies and guidelines of the higher education system in the post-COVID era include (1) Facilitate and promote domestic and international cooperation, (2) Attracting public support (3) Use of various teaching methods and (4) Develop the competencies of the faculty members are recommended. Therefore, in Iranian HEIs, it is necessary for university management in the post- COVID era to be prepared to advance its goals, and based on the circumstances, to prioritize the review of educational, research and executive methods. The study contributes to the understanding of the university management in the post-COVID era, giving evidence of the magnitude of the impact of management in the crisis condition, which led to a deeper understanding of the international cooperation needed to protect us. In the four strategies, this study improves current knowledge regarding university management in the post-COVID era.
Comparison of the theoretical and experimental coefficient of friction for the brake disc-brake pad system
Authors:   Mechanical Engineering Department, Veermata Jijabai Technological Institute, Mumbai, India, Kshirsagar Mrunal P. , Khairnar Hrishikesh P. ,   Mechanical Engineering Department, Veermata Jijabai Technological Institute, Mumbai, India
Published: July 2023

Contact between the automotive brake pad and the disc is mathematically modelled to estimate the coefficient of friction (COF). The mathematical model is proposed for the prognosis of the COF of brake pad material, by considering the contact mechanics between the interfacing surface and their material properties. The Greenwood-Williamson contact model is applied for rough contact surfaces for the estimation of the real contact radius. A MATLAB program has been formulated for generating the surface of brake pad material by considering its material properties which aid in the analytical evaluation of the COF. The proposed model is further validated with experimentation on pin-on-disc apparatus, as it is considered suitable for friction pad product testing according to previous research. The 25 pins were fabricated as per the ASTM G99 test for testing under varying loads and speeds. The obtained results showed that the range of COF has been between 0.2 and 0.4. The investigation presents an analytical approach for estimating COF and contact radius for brake disc and brake pad, which can be used to design an efficient automotive brake disc-brake pad system under the given load and rotational speed. The artificial neural network (ANN) is modelled for predicting the values of the COF for brake disc-brake pad systems, which can be further used for determining the tribological properties of new friction materials and their compatibility for efficient brake systems.
OBAVEZE PREVOZNIKA PREMA LICIMA SA INVALIDITETOM KAO KORISNIKA USLUGA PREVOZA PREMA PROPISIMA EU I PROPISIMA SRBIJE
Authors:   University of Kragujevac, Faculty of Law, Miladinović Zoran
Published: July 2023

The paper discusses the obligations of the carrier as a provider of transportation services towards persons with disabilities as passengers in public transportation according to EU regulations and Serbian regulations. Bearing in mind that passengers as users of transportation services in all branches of traffic are generally the weaker party to the contract (especially when persons with disabilities appear as passengers), it was necessary to prescribe clear obligations of the carrier as well as other entities that provide services that are in the function of using transportation service in relation to persons with disabilities and persons with reduced mobility. The starting point for establishing appropriate obligations for carriers towards this category of service users is the UN Convention on the Rights of Persons with Disabilities. On the basis of the principle provision from this convention, the obligations of carriers towards persons with disabilities as passengers in public transport are regulated in all branches of traffic by the relevant EU regulations (Regulations). Based on the UN Convention on the Rights of Persons with Disabilities, the relevant EU regulations and the Law on Prevention of Discrimination against Persons with Disabilities of the Republic of Serbia, in Serbia, the regulations on passenger transportation in certain branches of traffic prescribe appropriate obligations for carriers towards persons with disabilities as users of transportation services. By prescribing appropriate obligations of carriers towards persons with disabilities as users of transportation services, persons with disabilities as passengers in public transportation finally received appropriate protection, at least in a normative sense. Due to the differences in certain branches of traffic and the issue of the carrier's obligations towards this category of passengers, it is regulated differently in certain branches of traffic, but the conclusion is that this issue is best regulated when it comes to air transport, so it can serve as a model for further regulation of this issues in other branches of traffic in Serbia, especially when it comes to road traffic, since the current regulations almost do not regulate it.
Implementation of Business Services Retribution Policy in Tomohon City (Study on Optimizing Retribution for Tourism Areas in Tomohon City)
Authors: Hendry Bogia Victory
Published: July 2023

This study aims to analyze and explain the implementation of business service retribution policies in Tomohon City, this study uses a qualitative descriptive method. Data collection techniques with interviews and documentation as well as data analysis used are Interactive Model Analysis. Retribution for business services, especially tourist areas, has been running and the regional tourism office through coordination tasks has not been carried out optimally. This can be seen in the achievement of the target for retribution for the tourist area of ​​Tomohon City, which has not yet reached the target.
Collaborative Governance in Tourism Development Policy
Authors: Afrisal Ade Ferry
Published: July 2023

The tourism sector has an important role in economic development by utilizing its potential and developing new tourism. This tourism development effort is implemented by the government in collaboration with the public in deciding the policies to be implemented or can be called collaborative governance. This study aims to determine the implementation of collaborative governance in tourism development policies. This study uses qualitative research methods, while the data collection techniques are carried out by exploring journals, books and other information relevant to the study. The results show that the government implements collaborative governance in tourism development policies by issuing a number of tour packages to support the development of tourism activities themselves. These activities include promotions, tourist destinations, main and supporting facilities, tourism products and human resources. Due to the collaboration between the government and the community, currently there are various tourist objects that have been known to foreign countries and tourism objects that are in the process of promotion which of course have their respective potentials and attractions.
Impact of Reels Video Marketing on Customers’ Purchase Intention
Authors: Ananda Nur Rizki Faradia , Halim Erwin
Published: July 2023

This research is motivated by the large number of internet users in Indonesia, as well as the use of Instagram with a variety of useful features provided, one of which is the Reels feature. The purpose of this study is to find out how the influence of the Reel feature on Instagram can have a direct effect on Consumer Buying Interest or it can also be done indirectly through Consumer Brand Attitudes. The sampling technique used is purposive sampling technique. The results of this study indicate that variables based on independent scenarios, user participation, perceived benefits, perceived enjoyment, celebrity involvement directly have a positive and significant effect on consumer brand attitudes, and consumer brand attitudes also have a positive and significant effect on consumer purchase intentions. While interesting content directly (direct effect) does not have a positive and significant effect on consumer brand attitudes.
Residents’ Negative Perception of Fellow Countryman’s Travelling During Epidemiological Restrictions
Authors: Chevtaeva Natalia , Chevtaeva Ekaterina , Gamor Emmanuel
Published: July 2023

This research explored the creation of negative perception towards returning travellers in response to the threat of spreading the virus and positive travel behaviour during the relaxation of travel restrictions at the time of the COVID-19 health crisis. The data for research was collected from 530 respondents and analysed using hierarchical multiple regression, confirmatory factor analysis, and the Sobel test of significance. The study results revealed that people had a perception of a high risk of catching COVID-19, which has led to a negative perception of travel during a pandemic. Moreover, malicious travel behaviour reinforced discrimination, while positive travel behaviour reduced the negativity in perceptions of returning travellers but did not spare the returnees from discrimination. Implications for both practice and theory, as well as limitations and future directions are further discussed. Based on research findings, resilience of travel should not limit its focus on just the recovery and health control measures of regions that receive travellers, but also pay close attention to the perceptions of travellers returning home after vacations, so as to avoid social distress and stimulate a continuous growth of the demand for travel. In order to stimulate sustainable travel activity with no negative perception of travel and travellers among resident, maintaining local getaways is recommended.
Impacts and Efforts to Preserve Local Wisdom of the Bajo Tribe in the Conservation of Marine Resources in Wakatobi Regency, Southeast Sulawesi Province, Indonesia
Authors:   Lecturers at Halu Oleo University, Kendari, Indonesia, Taena La
Published: July 2023

This research aims to analyze the impact of the local wisdom's non-sustainability on the life of Bajo Mola people and to analyze efforts to maintain the local wisdom of Bajo Mola tribe in conserving marine resources. The method in this research is descriptive qualitative with a case study approach. Data collection was carried out by involved observation, in-depth interviews with selected informants, and documentation. The data obtained were analyzed by steps, data reduction, data presentation, and verification. The results of this study indicate that the non-sustainability of local wisdom has an impact on the life of Bajo Mola tribe, the impact consists of negative impacts, including marine resources that are starting to become scarce, this is influenced by the exploitative attitude of the people who do not care about sustainable management of marine resources. Lack of public awareness of the conservation of marine resources, the community no longer cares about the rules and attitudes that have become a separate identity for Bajo Mola tribe in protecting and managing marine resources. Positive impacts, including the development of community settlements, Bajo tribe feel more comfortable living in concrete houses made of coral than living in wooden stilt houses, this is a wooden stilt house, prone to sea breezes because of its presence above sea water which is always facing the sea free. Efforts to maintain the local wisdom of Bajo tribe are by making efforts to inherit it from generation to generation, the true inheritance of local wisdom aims to preserve and increase the understanding of Bajo Mola people towards their local wisdom.
Forms of Educational Marginalization Practices in Tanailandu Village, Mawasangka Sub-District of Central Buton Regency, Southeast Sulawesi, Indonesia
Authors:   Lecturers at Halu Oleo University, Kendari, Indonesia, Taena La , Arfa Arfa ,   Lecturers at Halu Oleo University, Kendari, Indonesia, Hasniah Hasniah ,   Lecturers at Halu Oleo University, Kendari, Indonesia, Aso La ,   Lecturers at Halu Oleo University, Kendari, Indonesia, DM Murniati ,   Lecturers at Halu Oleo University, Kendari, Indonesia, Basri Asriani Mulia ,   Lecturers at Halu Oleo University, Kendari, Indonesia
Published: July 2023

This research aims to describe the forms of educational marginalization practices in Tanailandu Village, Mawasangka District, Central Buton Regency. This research is qualitative research with a case study approach. The informants in this study were carried out by purposive sampling. The informants of this research were students who experienced marginalization, teachers as teachers and educators, and parents of students. Data collection was carried out by observing participants, open and in-depth interviews, documentation studies and Focus Group Discussions (FGD) with selected informants. The data obtained was analyzed by reducing data, presenting data, and drawing conclusions. The results of this study indicate that forms of educational marginalization are carried out, namely (1) Teachers let children drop out of school, (2) Parents pay little attention to children's education. (3) Loss of dialogue between parents and education providers, (4) learning systems that tend to be boring and unpleasant for students, (5) Limited educational facilities and infrastructure, (6) unhealthy and dangerous environment for children to play, (7) ) limited human resources (HR), and (8), limited infrastructure.
Implementation of Human Rights Protection against Victims of Severe Human Rights Violations in Indonesia's Criminal Justice System
Authors:   Master of Law, Faculty of Law, Diponegoro University, Indonesia, Kurniawan Dedy , Setiyono Joko ,   Master of Law, Faculty of Law, Diponegoro University, Indonesia
Published: July 2023

The study is back to back by seeing that legal protection against victims of severe human rights violations is necessary, as the weak should be effective in protecting the law. So the author was interested in doing this study that discussed how the implementation of human rights protection against victims of severe human rights violations in the criminal justice system in Indonesia, What is problematic in the study is how victims of major human rights violations are regulated in Indonesia and whether the implementation of legal protection against victims of severe human rights violations in existing regulations could provide legal protection against victims of human rights violations. The method of research used in this study is normatif juridical or search literature. Research has shown that the rights of victims of gross human rights violations in criminal justice systems are regulated in 190 penal code laws laws on criminal events, the rule 26 year 2000 on human rights on the next human rights court is governed by regulations granting protection to victims and witnesses in 2002 government regulation Number 2 year and government regulation Number 3 2002 on compensation ordinances, Restitution and rehabilitation, act Number 27 in 2004 on the commission of truth and reconciliation, and in the 2006 act Number 13 on the protection of witnesses and victims. The implementation of protection of law against victims of severe human rights violations in Indonesia has not been consistent with the current laws. Where victims' rights are not fully satisfied because of any legal obstacles such as his lack of success in proving a perpetrator in a severe human rights violation. The weakness of legal procedures that make compensating and rehabilitation to victims is difficult to realize.
Política Editorial
Authors: Rezende Patrick
Published: July 2023

Política Editorial da Revista PERcursos Linguísticos
A Study on the Effects of Gamification Teaching on the Learning Performance and Interest of English Learners in Higher Education
Authors:   Philippine Women's University, Yang Jing
Published: July 2023

With the development of educational technology and the renewal of educational philosophy, gamified teaching has become a highly regarded teaching method. Based on the elements and mechanisms of games, gamified teaching stimulates students' learning motivation and learning engagement by creating a fun, interactive, and challenging learning environment. In higher-level English learning, gamified teaching provides students with a new way of learning, enabling them to explore and apply their knowledge in a relaxed and enjoyable atmosphere, and improving their learning performance. The article focuses on the impact of gamified teaching on the learning performance and interest of higher vocational English learners and the strategies to improve them, which is expected to provide some reference and inspiration for educators.
Custard Apple Value Chain in Beed District of Maharashtra, India: A Case Study
Authors: Singh Amit , Kumar Himanshu
Published: July 2023

Agriculture, with its allied sectors, is the largest source of livelihoods in India where 70% of its rural households still depend primarily on agriculture for their livelihood, with 82 percent of farmers being small and marginal (FAO). The majority of small and marginal farmers as well as the landless peasants depend on the other livelihood activity such as livestock and non-timber forest products for sustenance in states like Jharkhand, Andhra Pradesh, Odisha, Maharashtra, etc. Some of the non-timber forest products are a catalyst for their income, and custard apple (also called Sitafal/Sarifa in some regions) is one of them. Many communities are involved in the cultivation of custard apple in different states. One such community called Banjara is significantly engaged in cultivating custard apples in Maharashtra's Beed district. In this paper, the readers can get a holistic view of the value chain of the custard apple. The case study demonstrates how a small tribal community-driven enterprise turns profitable by processing custard apples in the Beed district of Maharashtra. Taking cue from the case, the government can promote cultivation and processing of custard apples among the tribal community as an alternative means of livelihood and income augmentation.
Workplace Conformity and Workplace Values: A Comparative Study of TCS and Infosys
Authors: Patel Aastha
Published: July 2023

This study examines the difference between workplace values and workplace conformity at two IT giants, Tata Consultancy Services (TCS) and Infosys. Conformity is the act of aligning oneself with the group, and the bulk of employee activities in a company revolves around sustaining group conformity as a group habit. An organization's guiding beliefs and principles are its organizational values. They include openness, confrontation, trust, authenticity, proaction (taking the initiative, preplanning, preventative activity and evaluating alternative payoffs before acting), autonomy, collaboration, and experimentation. For the current study, TCS and Infosys employees provided 60 responses to a 4-point scale questionnaire based on the OCTAPACE profile and a 7-point scale questionnaire based on the normative influence scale. The result of the study highlights the workplace ideals having a significant difference with workplace conformity at both TCS and Infosys.
Conocimientos etnoveterinarios de plantas medicinales para el ganado
Authors:   Escuela Superior Politécnica de Manabí Manuel Félix López, calle 10 de agosto N° 82 y Granda Centeno, Calceta, Manabí, Ecuador, Bravo Loor Johnny Daniel , Guillén Mendoza Mauro Manabí ,   Escuela Superior Politécnica de Manabí Manuel Félix López, calle 10 de agosto N° 82 y Granda Centeno, Calceta, Manabí, Ecuador, Guillén Mendoza Saskia Valeria ,   Escuela Superior Politécnica de Manabí Manuel Félix López, calle 10 de agosto N° 82 y Granda Centeno, Calceta, Manabí, Ecuador, Cueva Navia Tommy Francisco ,   Escuela Superior Politécnica de Manabí Manuel Félix López, calle 10 de agosto N° 82 y Granda Centeno, Calceta, Manabí, Ecuador
Published: July 2023

El objetivo de este estudio fue encontrar y compilar conocimientos ancestrales de plantas medicinales utilizadas para tratar enfermedades del ganado. Se identificó conocimientos etnoveterinarios relacionados con el uso de recursos botánicos en la zona norte de Manabí, Ecuador; a través de entrevistas y encuestas a 225 productores, analizadas, usando el programa SPSSV21. La edad promedio de los encuestados fue de 47 años, un 51,56% corresponden al sexo masculino, la escolaridad es de nivel medio (56,44%). En la búsqueda el 53,34% se dedican a la producción bovina y avícola, y 49,33% de ellos tienen acceso a la asistencia veterinaria. El equivalente de 83,33% conocen el significado de saberes ancestrales y las plantas más usadas son Allium sativum, Citrus x limon, Matricaria chamomilla, Chenopodium ambrosioides y Origanum vulgare, mientras tanto, Ruta graveolens, Azadarichta indica y Aloe vera son muy valoradas localmente para el control y tratamiento de afecciones provocadas por parásitos, problemas digestivos y afecciones respiratorias. Estas especies tienen un alto potencial medicinal, muestran una amplia aceptación, aplicación y múltiples formas de preparación y administración. Existe la necesidad de conservar el conocimiento sobre el uso de plantas medicinales en la zona centro norte de Manabí para las generaciones futuras e incorporarlo a los servicios de salud del ganado existente.
Evaluación de emisiones de ruido, barrio Valdivia, Guayaquil
Authors:   Centro de Investigaciones Territoriales, Departamento de investigaciones, Universidad Nacional de Loja, Ecuador, González Soto Fernando Alexis , Montenegro Benalcázar Verónica Estefanía ,   Facultad de Ciencias de la Vida, Biotecnología, Universidad Politécnica Salesiana, Guayaquil, Ecuador, Ramos Azu John Byron ,   Facultad de Ciencias Agrarias, Ingeniería Ambiental, Universidad Agraria del Ecuador, Guayaquil, Ecuador, Muñoz Naranjo Diego Iván ,   Facultad de Ciencias Agrarias, Ingeniería Ambiental, Universidad Agraria del Ecuador, Guayaquil, Ecuador
Published: July 2023

plazo los procesos auditivos de los seres humanos y las condiciones de vida. Este inconveniente se acentúa con fuerza principalmente en las grandes metrópolis, en donde las actividades productivas, comerciales e industriales, tienen una intensa dinámica; esto genera un entorno disfuncional y de precariedad del estándar de vida en la población. Un claro ejemplo de contaminación ambiental se presenta en el barrio Valdivia, Guayaquil-Ecuador, en donde, se registraron y analizaron niveles de presión sonora producida por la influencia de ruido de los automotores y fuentes fijas del sector. La metodología utilizada en el polígono de interés consistió en tomar un mínimo de 12 mediciones con una duración de 5 segundos cada una, en 9 puntos críticos del barrio Valdivia. Una vez determinados los niveles de ruido equivalente promedio, se observó el grado de cumplimiento con la normativa ambiental vigente (Documento de registro oficial ecuatoriano N0 387 04). Se evidenció que, durante las dos jornadas, diurna y nocturna, los niveles de ruido sobrepasaron, en todos los puntos críticos, los valores permisibles, registrando máximos de 86.2 dB Ld en horario diurno y 82.9 dB Ln en horario nocturno, respectivamente.
Sistema de indicadores de sostenibilidad ambiental para la conservación del cerro Putzalahua, Ecuador
Authors:   Docente investigador, Clavijo Cevallos Manuel Patricio , Gutiérrez Toscano Katy Vanessa ,   Universidad Técnica de Cotopaxi, Facultad de Ciencias Agropecuarias y Recursos Naturales, Av. Simón Rodríguez s/n Barrio El Ejido Sector San Felipe. Latacunga – Ecuador
Published: July 2023

a gestión inadecuada del medio ambiente en los páramos puede tener un impacto negativo en el uso eficiente de los recursos naturales. El objetivo de este estudio fue desarrollar un sistema de indicadores para evaluar la sostenibilidad ambiental como una herramienta para conservar el cerro Putzalahua. La metodología utilizada se basó en el método deductivo-inductivo, que permitió identificar la problemática ambiental y seleccionar los indicadores adecuados. Se complementó la información recopilada a través de visitas in situ y entrevistas no estructuradas con directivos del GAD parroquial y habitantes de las comunidades utilizando un muestreo no probabilístico. Para seleccionar los indicadores, se aplicó el método PER: Presión, para identificar las actividades humanas que generan cambios en el medio ambiente; Estado, para evaluar la situación actual del medio ambiente y sus recursos naturales; y respuesta, para identificar las acciones establecidas por el gobierno y las entidades competentes para abordar la problemática ambiental. Se identificaron actividades agrícolas, extracción de madera e impactos generados por las actividades turísticas como los principales factores de presión. Se establecieron 31 indicadores en función de 5 factores y se desarrollaron estrategias y actividades específicas para fortalecer y orientar la toma de decisiones correctas. En conclusión, el sistema de indicadores representa una herramienta valiosa para simplificar y sistematizar la información relacionada con la problemática ambiental, y puede ser utilizada para abordar diferentes aspectos que inciden en la conservación de los recursos naturales.
The Influence of Service Quality and Hospital Image on Revisit Intention Through Word of Mouth on Inpatient Services at the Ibnu Sina Regional General Hospital in Gresik District
Authors: Setyo Rahman Akhmad , Suyoto  , Desembrianita Eva
Published: July 2023

This study aims to analyze service quality and hospital image affect revisit intention through word of mouth at ibnu sina Gresik hospital. This research uses quantitative methods with 180 respondents consisting of patients and employees who work at ibnu sina Gresik hospital. The results of this study indicate that there is an effect of service quality on revisit intention through word of mouth, and there is also an effect of hospital image on revisit intention through word of mouth at ibnu sina Gresik hospital. This research is expected to be used as material for hospital evaluation in order to improve service quality to patients.
A Historical Overview of the Development of Buddhism in Cambodia
Authors:   Asia Social Science Academy, Srey Chanda , Chantha Channarith
Published: July 2023

Buddhism has a long history in Cambodia, beginning with the arrival of Indian monks in the 4th century and continuing until the present day. This paper will provide a detailed overview of the development of Buddhism in Cambodia, beginning with its introduction in the 4th century, followed by its growth and spread during the Khmer Empire period, and its gradual decline during the French colonial period. It will also discuss the resurgence of Buddhism in the modern era and its current status in Cambodia. The paper will conclude with an analysis of the impact of Buddhism on Cambodian society and culture.
The Ways and Prospects of America's Decoupling from China's Science and Technology
Authors:   Asia Social Science Academy, Li Gengjin
Published: July 2023

United States has adopted the following four ways to realize its strategy of decoupling. Firstly, it has established an anti-China science and technology alliance to suppress the mass science and technology in China; Secondly, launch a technology competition with China to strengthen the leading position of American science and technology; Thirdly, promote the ideological battlefield and strengthen the psychological foundation of decoupling; Fourthly, strengthen the anti-China process of law, and promote the formation of a decoupling strategy. Considering the comprehensive analysis of the economic data, the law of scientific development of China, the United States and the whole world in recent five years, and the popular support of the world, this paper holds that in the short term, the decoupling of science and technology between China and the United States will cause both losses, and the world will become the victim passively. In the medium term, China's science and technology will find its own way, and steadily push forward its self-reliance and self-improvement; In the long run, the decoupling does not conform to the laws of science and will not be implemented for a long time after all.
An Examination of Security Risks in China-Pakistan Investment Cooperation under Changing Dynamics
Authors:   Asia Social Science Academy, Ma Yuting , Ma Run
Published: July 2023

As the most important part of China-Pakistan Economic Corridor, Pakistan itself has been facing problems like terrorism attacks, political turmoil and economic crisis. Especially after the U.S. withdraw from Afghan, its western borders close to Afghan has been facing numerous violence accidents and unstable factors. These problems cause serious situation to any personnel stay in Pakistan, and thus difficulties in progressing projects. However, except for those obstacles in front of Chinese personnel, Pakistan government has been determined to dedicate to economic development, thus CPEC and its related programs undoubtedly become Pakistan’s most feasible and reliable economic growth projects and vice versa. Among many other policies, Pakistan has launched security policies and special measures for Chinese staffs. Thus for investors, Pakistan is still the friendliest government with welcoming people. Based on analysis, there is still solid ground to stick to the CPEC and go on cooperation, while new investors need to assess all practical problems and factors to make decisions.
An Exploration of the Coverage of People’s Daily on the “Belt and Road” Initiative-related Issues in Pakistan from a Perspective of Moral Concern and Balance of Interests
Authors:   Asia Social Science Academy, Jin Qiang , Yang Haibao , Chen JinXiao
Published: July 2023

China-Pakistan relations have been renewed for a long time, especially after the “Belt and Road” initiative and the “China-Pakistan Economic Corridor” were put forward, the cooperation between the two countries has continued to deepen and become more solid. “People's Daily” is best at grasping the situation at home and abroad, and it can also reflect the will of the country, constantly weighing between “morality” and “interest”. Its reports on Pakistan are representative among domestic media. Reports show an irregular trend, with fluctuations and declines. There are various types of reports, but they are mainly news, with the layout at the front. The length is relatively long, and the sources of news are more authoritative. In terms of content, the main body of the report is clear, and the leader’s news accounts for a large proportion. China-Pakistan economic cooperation and the China-Pakistan Economic Corridor are the main ones, and positive reports are mainly used. There are more neutral and negative reports in social news. In the cultural field, education exchanges and Youth exchanges are the main focus, and the military field is mainly military cooperation and counter-terrorism. Relevant reporting can also increase the amount of in-depth reporting, provide diversity information, and focus more on cultural reporting.
Opportunities, Challenges and Countermeasures of National Identity Education for Chinese College Students in the Internet Era
Authors:   Asia Social Science Academy, Hou Tianzuo , Wu Hong
Published: July 2023

In addition to operating as a unique channel for educators to execute national identity education, the internet period serves as the main venue for contemporary Chinese college students to articulate their subjectivities and perceive the world. Because of the Internet's myriad of features, Chinese college students now have unprecedented opportunities to educate themselves about China's national identity. However, these features have also brought about certain social upheavals and the influence of “virtual existence”, both of which may have an impact on the students' value systems and national consciousness. In light of these circumstances, China is moving forward into a new epoch, which makes it an urgent necessity to strengthen and improve the education of Chinese college students in network-based national identity. As a result, the current work analyses the opportunities boded by the internet era for the teaching of Chinese college students' national identity. Simultaneously, the work examines the problems within, and it endeavours to provide techniques that are responsive to these challenges.
Chemical evolution of primary and secondary biomass burning aerosols during daytime and nighttime
Authors: Yazdani Amir , Takahama Satoshi , Kodros John K. , Paglione Marco , Masiol Mauro , Squizzato Stefania , Florou Kalliopi , Kaltsonoudis Christos , Jorga Spiro D. , Pandis Spyros N. , Nenes Athanasios
Published: July 2023

Abstract. Primary emissions from wood and pellet stoves were aged in an atmospheric simulation chamber under daytime and nighttime conditions. The aerosol was analyzed with online aerosol mass spectrometry and offline Fourier transform infrared spectroscopy (FTIR). Measurements using the two techniques agreed reasonably well in terms of the organic aerosol (OA) mass concentration, OA:OC trends, and concentrations of biomass burning markers – lignin-like compounds and anhydrosugars. Based on aerosol mass spectrometry, around 15 % of the primary organic aerosol (POA) mass underwent some form of transformation during daytime oxidation conditions after 6–10 h of atmospheric exposure. A lesser extent of transformation was observed during the nighttime oxidation. The decay of certain semi-volatile (e.g., levoglucosan) and less volatile (e.g., lignin-like) POA components was substantial during aging, highlighting the role of heterogeneous reactions and gas–particle partitioning. Lignin-like compounds were observed to degrade under both daytime and nighttime conditions, whereas anhydrosugars degraded only under daytime conditions. Among the marker mass fragments of primary biomass burning OA (bbPOA), heavy ones (higher m/z) were relatively more stable during aging. The biomass burning secondary OA (bbSOA) became more oxidized with continued aging and resembled that of aged atmospheric organic aerosols. The bbSOA formed during daytime oxidation was dominated by acids. Organonitrates were an important product of nighttime reactions in both humid and dry conditions. Our results underline the importance of changes to both the primary and secondary biomass burning aerosols during their atmospheric aging. Heavier fragments from aerosol mass spectrometry seldom used in atmospheric chemistry can be used as more stable tracers of bbPOA and, in combination with the established levoglucosan marker, can provide an indication of the extent of bbPOA aging.
Oxygenated organic molecules produced by low-NOx photooxidation of aromatic compounds and their contributions to secondary organic aerosol
Authors: Cheng Xi , Li Yong Jie , Zheng Yan , Liao Keren , Zhu Tong , Ye Chunxiang , Qiu Xinghua , Koenig Theodore K. , Ge Yanli , Chen Qi
Published: July 2023

Abstract. Oxygenated organic molecules (OOMs) produced by the oxidation of aromatic compounds are key components of secondary organic aerosol (SOA) in urban environments. The steric effects of substitutions and rings and the role of key reaction pathways on altering the OOM distributions remain unclear because of the lack of systematic multi-precursor study over a wide range of OH exposure. In this study, we conducted flow-tube experiments and used the nitrate adduct time-of-flight chemical ionization mass spectrometer (NO3−-TOF-CIMS) to measure the OOMs produced by the photooxidation of six key aromatic precursors under low-NOx conditions. For single aromatic precursors, the detected OOM peak clusters show one or two oxygen-atom difference, indicating the involvement of multi-step auto-oxidation and alkoxy radical pathways. Multi-generation OH oxidation is also needed to explain the diverse hydrogen numbers in the observed formulae. Especially for double-ring precursors at higher OH exposure, multi-generation OH oxidation may have significantly enriched the dimer formulae. Methyl substitutions in precursor may lead to less fragmented products in the OOMs, while the double-ring structure corresponds to less efficient formation of closed-shell monomeric and dimeric products, both highlighting significant steric effects of precursor molecular structure on the OOM formation. The estimated accretion reaction rate constants for key dimers formed from the benzene oxidation are much greater than those formed from the naphthalene oxidation (7.0 vs. 0.9×10−10 cm3 molecules−1 s−1). Naphthalene-derived OOMs however have lower volatilities and greater SOA contributions than the other-types of OOMs, which may be more important in initial particle growth. Overall, the OOMs identified by the NO3−-TOF-CIMS perhaps consist of 3–11 % of the SOA mass. Our results highlight the key roles of progressive OH oxidation, methyl substitution and ring structure in the OOM formation from aromatic precursors, which needs to be considered in future model developments to improve the model performance on organic aerosol.