bluuebunny/crossref_metadata_2025 huggingface dataset:
Physical Length and Weight Reduction of Humanoid In-Robot Network with Zonal Architecture
Authors: Cui Chengyu , Park Chulsun , Park Sungkwon
Published: February 2023

Recently, with the continuous increase in the number of sensors, motors, actuators, radars, data processors and other components carried by humanoid robots, the integration of electronic components within a humanoid is also facing new challenges. Therefore, we focus on the development of sensor networks suitable for humanoid robots to designing an in-robot network (IRN) that can support a large sensor network for reliable data exchange. It was shown that the domain based in-vehicle network (IVN) architectures (DIA) used in the traditional and electric vehicles is gradually moving towards zonal IVN architectures (ZIA). Compared with DIA, ZIA for vehicles is known to provide better network scalability, maintenance convenience, shorter harness length, lighter harness weight, lower data transmission delay, and other several advantages. This paper introduces the structural differences between ZIRA and the domain based IRN architecture (DIRA) for humanoids. Additionally, it compares the differences in the length and weight of wiring harnesses of the two architectures. The results show that as the number of electrical components including sensors increases, ZIRA reduces at least 16% compared to DIRA, the wiring harness length, weight, and its cost.
Separation of Temperature-Induced Response for Bridge Long-Term Monitoring Data Using Local Outlier Correction and Savitzky–Golay Convolution Smoothing
Authors: Zhang Wei , Yang Hongyin , Cao Hongyou , Zhang Xiucheng , Zhang Aixin , Wu Nanhao , Liu Zhangjun
Published: February 2023

This study proposed a separation method to identify the temperature-induced response from the long-term monitoring data with noise and other action-induced effects. In the proposed method, the original measured data are transformed using the local outlier factor (LOF), and the threshold of the LOF is determined by minimizing the variance of the modified data. The Savitzky–Golay convolution smoothing is also utilized to filter the noise of the modified data. Furthermore, this study proposes an optimization algorithm, namely the AOHHO, which hybridizes the Aquila Optimizer (AO) and the Harris Hawks Optimization (HHO) to identify the optimal value of the threshold of the LOF. The AOHHO employs the exploration ability of the AO and the exploitation ability of the HHO. Four benchmark functions illustrate that the proposed AOHHO owns a stronger search ability than the other four metaheuristic algorithms. A numerical example and in situ measured data are utilized to evaluate the performances of the proposed separation method. The results show that the separation accuracy of the proposed method is better than the wavelet-based method and is based on machine learning methods in different time windows. The maximum separation errors of the two methods are about 2.2 times and 5.1 times that of the proposed method, respectively.
Just Noticeable Difference Model for Images with Color Sensitivity
Authors: Zhang Zhao , Shang Xiwu , Li Guoping , Wang Guozhong
Published: February 2023

The just noticeable difference (JND) model reflects the visibility limitations of the human visual system (HVS), which plays an important role in perceptual image/video processing and is commonly applied to perceptual redundancy removal. However, existing JND models are usually constructed by treating the color components of three channels equally, and their estimation of the masking effect is inadequate. In this paper, we introduce visual saliency and color sensitivity modulation to improve the JND model. Firstly, we comprehensively combined contrast masking, pattern masking, and edge protection to estimate the masking effect. Then, the visual saliency of HVS was taken into account to adaptively modulate the masking effect. Finally, we built color sensitivity modulation according to the perceptual sensitivities of HVS, to adjust the sub-JND thresholds of Y, Cb, and Cr components. Thus, the color-sensitivity-based JND model (CSJND) was constructed. Extensive experiments and subjective tests were conducted to verify the effectiveness of the CSJND model. We found that consistency between the CSJND model and HVS was better than existing state-of-the-art JND models.
Signs of a Manager’s Leadership in a Quality Educational Institution: Cases of the City and District Centre of Lithuania
Authors: Jakavonytė-Staškuvienė Daiva , Strazdauskienė Viktorija
Published: February 2023

One of the problems in Lithuania is the shortage of heads of educational institutions; many schools are looking for teachers, and there is a constant shortage of teaching staff. In addition, the issue of quality education is often debated. The article analyses the concept of a quality educational institution: the attributes and personal qualities of a manager-leader. The research was conducted in two schools in Lithuania (a large city and a district centre), which are characterised as high-quality educational institutions. These schools in Lithuania are highly rated in terms of pupil achievement, external audit data, and statements made by school communities in public space and social networks. The aim of the study is to investigate the attributes of a leader of a quality educational institution and its leader. The study used a qualitative methodology: semi-structured interviews with school leaders, teachers, and parents of students belonging to the school council. Qualitative research was chosen because it would be difficult to reveal the meaning of the problem using a quantitative method, as each respondent has his or her own individual opinion, which depends on his or her experiences. The data were analysed according to coding categories. According to the study, it can be stated that for a leader of a quality educational institution, it is very important to follow such principles as respect for others, knowledge of others, democratic values, belief in colleagues and their abilities, and lifelong learning should be part of the daily life of the educational community.
Role Models of Aging among Older Men: Strategies for Facilitating Change and Implications for Health Promotion
Authors: Deneau Jordan , Dionigi Rylee A. , van Wyk Paula M. , Horton Sean
Published: February 2023

Understanding later-life role model choice and motivations, particularly for older men in sport, exercise, and health contexts, is complex and heterogenous, making it difficult for health and exercise promotion initiatives. This qualitative study examined: (1) whether older men have aging role models, and if so, their characteristics; and (2) older men’s reasons for role model choice, or lack thereof, and how role models can influence meaningful change in perceptions and practices associated with aging, sport, exercise, and health. Through in-depth interviews and photo-elicitation with 19 Canadian men aged 75 years and over, thematic analysis determined two key themes: Role model choice, and Processes of role models facilitating change. Four key strategies for role models facilitating change in older men were determined: elite (biomedical) transcendence; valued exemplary endeavours; alliance connections; and disconnect and caveats. Ultimately, while promoting the biomedical achievements of role models may resonate with many older men, when applied too closely in sport or exercise contexts (e.g., using Masters athletes as role models), there is potential for unrealistic standards and overmedicalization that could miss uncovering the latent importance that older men place on the diverse experiences and perspectives of aging that go beyond traditional masculine ideals.
Activity Videos Effect on Four-, Five- and Six-Year-Olds’ Physical Activity Level in Preschool
Authors: Kippe Karin , Lagestad Pål
Published: February 2023

Physical activity provides positive health benefits for preschool children. The aim of this study is to examine the effect of physical activity videos on the physical activity levels of children aged 4, 5 and 6 in preschool time. Two preschools served as a control group, and four served as intervention groups. The study included 110 children aged 4–6 years, all wearing accelerometers in the preschool for two weeks. In the first week, both the control group and the intervention group carried out their ordinary activities. In the second week, the four preschools in the intervention group used the activity videos, while the control group continued their ordinary activities. The main finding is that the activity videos only increased the 4 year olds’ physical activity in MVPA (moderate to vigorous physical activity) from pre-test to post-test. Furthermore, the results show significantly increased CPM (counts per minute) in preschool among 4- and 6-year-old children in the interventions group from pre-test to post-test. However, the children in the control group did not have a significant change in their CPM or MVPA from pre-test to post-test. Our findings indicate that the use of activity videos may increase preschool children’s activity levels at preschool, but that the videos need to be developed differently depending on the age of the children.
Factors Influencing the Training Process of Paralympic Women Athletes
Authors: Rodríguez Macías Manuel , Giménez Fuentes-Guerra Francisco Javier , Abad Robles Manuel Tomás
Published: February 2023

(1) Background: Paralympic women athletes in their training process go through a series of interrelated stages which are parallel to their evolutionary development, during which a wide variety of psychological, social, and biological factors will have an impact. The purpose of this study was to analyze the factors influencing the sports training process of Spanish Paralympic women athletes (social, sporting, psychological, technical–tactical factors, physical condition, as well as barriers and facilitators) who had won at least one medal (gold, silver, or bronze) in the 21st century Paralympic Games (from Sydney 2000 to Tokyo 2020). (2) Methods: The research involved 28 Spanish Paralympic women athletes who had won at least one medal at a Paralympic Games in the 21st century. An interview of 54 questions grouped into 6 dimensions (sport context, social context, psychological, technical–tactical, physical fitness, and barriers and facilitators) was used. (3) Results: Coaches, as well as families, were essential in the sport development of Paralympic athletes. In addition, most women athletes recognized that psychological aspects were of vital importance, as well as working on technical–tactical aspects and physical fitness in an integrated way. Finally, the Paralympic women athletes highlighted that they had to face numerous barriers, mainly financial challenges and issues with visibility in the media. (4) Conclusions: Athletes consider it necessary to work with specialists to control emotions, increase motivation and self-confidence, as well as to reduce stress and anxiety and manage pressure. Finally, the training process and sporting performance of Paralympic women athletes are conditioned by several barriers, including economic, social, architectural, and disability barriers. These considerations can be taken into account by the technical teams working with Paralympic women athletes, as well as by the competent bodies, to improve the sports training process of these athletes.
Measuring the Soundscape Quality in Urban Spaces: A Case Study of Historic Urban Area
Authors: Hosseini Ali , Kowkabi Leila
Published: February 2023

The goals of a good soundscape are to create a sense of place, provide comfort to the users, and encourage intractability in a public space. At the same time, many public areas in cities are having problems due to the weakness in creating the opportunity for people to attend. Therefore, knowing the importance of the subject, this study has measured the aspects of the sonic environment and investigated its effect on the attendance of 15 Khordad Street, District 12, Tehran. The results of this study showed that attendance in urban spaces based on the aspects of the sonic environment focuses on the quality of the surrounding environment as a source of sound. By assessing the perceptual and sensory aspects of sounds in the environment, it is possible to understand the effects of sound on the behaviors, activities, and overall pleasantness of the space for the users. Based on the three statistical communities related to the study, among the key findings, we show that the majority of attendance to the case area was for the purpose of studying, shopping, and work, and despite the fact that this case study is a historic area, people are less willing to attend it. This street, part of which is designed as a pedestrian area, encourages individualism, and not bringing friends and family along is reinforced by unpleasant psychological effects. Since nowadays the problems of the sonic environment are expanding in cities, and noise pollution in some parts of Tehran is considered a major environmental problem, the findings of this study have taken a step to increase urban sustainability and try to improve the main criteria and results, which were to rationally evaluate the existing situation of attendance in urban spaces affected by the qualities of the sonic environment, to promote the policy and strategic city planning for city managers.
Evaluation of Sustainable Development Policy of Sichuan Citrus Industry in China Based on DEA–Malmquist Index and DID Model
Authors: He Yu , Chen Wenkuan
Published: February 2023

The citrus industry is an important fruit industry, with the widest cultivation area and the most crucial economic status in southern China. Evaluating the sustainable development of citrus industry is the basis for accurately grasping the food safety situation and scientifically formulating industrial development policies. This research aims to evaluate the sustainable development policies of citrus industry in 20 citrus-growing cities and states in Sichuan province in China from two dimensions of efficiency and effect. To this end, this study develops a DEA–Malmquist index and DID model using city and state panel data from 2009–2020. The results have the following implications: (1) The low technical efficiency and technological progress index together cause the general inefficiency of citrus production in Sichuan cities and states, and the improper scale of inputs is the main reason for the low technical efficiency. (2) The implementation of sustainable development policies has increased citrus total factor productivity and widened the gap between cities and states in Sichuan. (3) Excessive production factors and financial inputs have hindered the sustainable development of the Sichuan citrus industry.
Optimization of PET Particle-Reinforced Epoxy Resin Composite for Eco-Brick Application Using the Response Surface Methodology
Authors: Adiyanto Okka , Mohamad Effendi , Irianto  , Jaafar Rosidah , Faishal Muhammad , Rasyid Muhammad Izzudin
Published: February 2023

Brick is a common building material that is used in society for constructing buildings. A viable environmental strategy to lessen the amount of plastic waste involves the inclusion of plastic trash in building materials. Globally, there is a severe issue with the disposal of plastic garbage in landfills. The primary and secondary carbon bonds that are formed in plastic packaging wastes can severely contaminate the environment. Hence, managing plastic waste to generate new and useful items is essential. One of the most practical ways to safeguard the environment is to manufacture eco-bricks from PET waste and epoxy resin. Additionally, as there is no combustion involved in the production of this eco-brick; it does not harm the environment. Eco-brick can be defined as a novel concept and approach to waste management and recycling. Eco-bricks have many advantages, such as easy availability and being environmentally friendly. This study aimed to improve the composition of the eco-brick using a mixture of epoxy resin and PET particles. In this study, a mathematical modelling technique called the Response Surface Method (RSM) was designed using the Central Composite Design (CCD). Variable input factors were used to develop eco-bricks such as mixture ratio (10–90%), particle size (1–5 mm), and drying time (1–7 days), whereas the variable response included the compressive strength. The complete experimental design was developed using Design Expert 11 software, and simulation experiments with 17 sets of parameters were generated. The microstructural characteristics of the eco-brick were examined using SEM. The results of the experiments indicated that the most optimised parameters that could be used for eco-brick application were: a PET particle size of 1.1 mm, a mixing ratio of 89.9%, and a curing time of 6.9 days. Earlier research that was conducted regarding the production of eco-bricks using a PET particle and epoxy resin mixture showed that these materials had a high potential to boost compressive strength. The quadratic model was used as the basis for the regression analysis for generating the response equations. Since the difference between the experimental and anticipated values was less than 5%, it was concluded that the results of the experimental and predictive tests showed good agreement. The model used in this study yielded noteworthy outcomes. As a result, the suggested statistical model can offer a clear understanding of designing experiments and variables that affect the production of eco-brick using a blend of PET particles and epoxy resin.
Potential of Eight Species of Legumes for Heavy Fuel Oil-Contaminated Soil Phytoremediation
Authors: Meištininkas Rimas , Vaškevičienė Irena , Dikšaitytė Austra , Pedišius Nerijus , Žaltauskaitė Jūratė
Published: February 2023

The soil contamination of petroleum hydrocarbons is a widespread problem requiring an environmentally friendly and cost-effective solution. This study aimed to test the leguminous plant resistance to heavy fuel oil (HF) soil contamination and to evaluate their phytoremediation efficiency and potential to maintain the soil nutrient content. Eight legume species were selected for the study. The selected legumes were grown in a growth chamber in HF-contaminated soil (2.5 and 4 g kg−1) for 90 days. After the soil treatment, the changes in the soil HF contamination, nutrient concentrations, and plants morphology were monitored. The HF pollution significantly affected the dry weight of the shoots and roots of seven of the eight tested plant species. M. sativa, M. albus, and L. corniculatus had the highest phytoremediation potential with the efficiency of the HF removal up to 95 %. The leguminous plant-assisted HF remediation resulted in an increase in the ammonium and inorganic phosphorous soil content, with the highest increase in the case of L. corniculatus and O. viciifolia. The cultivation of Phaseolus vulgaris, L. corniculatus, and M. albus helped to maintain the soil nitrates close to the constant level. The study demonstrated that M. sativa, L. corniculatus, and M. albus were the most efficient in HF removal.
Effects of College Faculty Members’ Entrepreneurial Orientation on Organizational Performance: Case of South Korea
Authors: Lee Sae-hoon , Kang Hyun-chul , Kim Jong-sung , Baek Woo-yeul
Published: February 2023

The promotion of entrepreneurial orientation among college faculty members is crucial for the sustainable growth and success of the organization in a competitive higher education market. Despite numerous studies that reported on the effect of entrepreneurial orientation, there is limited research specific to college organizations in a competitive higher education setting. This study aimed to explore the relationship between entrepreneurial orientation among faculty members and organizational performance at colleges located outside of the Seoul metropolitan area in South Korea. To achieve this goal, data were collected through an online survey administered to 466 faculty members at 25 colleges surrounding Seoul between July and October 2022. Statistical analyses, including descriptive analysis, reliability analysis, confirmatory factor analysis, and structural equation modeling, were conducted using SPSS 23.0 and AMOS 23.0 software. The results showed a positive impact of innovativeness in entrepreneurial orientation on college competitiveness and organizational commitment, proactiveness in entrepreneurial orientation on college competitiveness, and risk-taking in entrepreneurial orientation on both college competitiveness and organizational commitment. These findings suggest that promoting faculty members’ entrepreneurial orientation and supporting their innovative efforts can benefit college organizations in a competitive higher education environment.
Carbon Stock Mapping Utilizing Accumulated Volume of Sequestrated Carbon at Bangladesh Agricultural University, Bangladesh
Authors: Farukh Murad Ahmed , Rani Kamona , Nashif Sayed Mohammed , Khatun Rimi , Toma Lotifa Tamanna , Hyakumura Kimihiko , Islam Kazi Kamrul
Published: February 2023

The potential to sequester carbon by tree species in tropical regions such as Bangladesh is promising in regard to carbon sequestration (CS) potentiality and reducing CO2 emissions. This study focuses on perennial tree species within 488 hectares of Bangladesh Agricultural University (BAU) to assess the CS and to produce a C stock map for BAU. To compute the green and dry weight, weight of C and CO2 sequestration in the tree, a simplified methodology from the National Computational Science Institute of the Shodor Education Foundation was applied. A total of 27,543 trees comprising 424 species were taken into consideration, dividing the whole study area into four segments. B. ceiba and L. acidissima received the maximum and minimum green, dry, and C weight values. The topmost five carbon stock accumulating trees are M. longifolium (264,768 kg yr−1), S. mahagoni (257,290), A. lebbeck (118,310), M. indica (78,906), and T. grandis (51,744) whilst A. lebbeck is the major C stock accumulating tree within BAU. The top five CS potential are found for B. ceiba (181 kg), A. columnaris (139 kg), S. siamea (116 kg), F. elastica (113 kg), and F. religiosa (83 kg). To reveal the prospects of tree species in Bangladesh for emission reduction, the CS potential could be incorporated with the C trading scheme of the CDM (clean development mechanism) of the Kyoto Protocol.
Dynamic Analysis of a Combined Spiral Bevel Gear and Planetary Gear Set in a Bucket Elevator with High Power Density
Authors: He Zhaoxia , Xing Zengfei , Zhou Qing , Chang Lehao
Published: February 2023

A combined spiral bevel gear and planetary gear set was designed for bucket elevators to reduce the system’s complexity and improve the system’s efficiency. The dynamic model of a combined spiral bevel gear and a 2K-H planetary gear train was developed by using the lumped mass method, where the time-varying mesh stiffness and comprehensive mesh error were introduced. Then, the equations of motion of the system were solved with the Newmark numerical integration method, and the dynamic transmission error and mesh force of the gear pairs were obtained. The influences of different input rotational speeds and power on the dynamic response of the system were analyzed. The dynamic responses of the bearings between the bevel gears, planet carrier, and box were calculated. It was found that the dynamic mesh force gradually decreased with an increase in speed, and it increased with an increase in power. For low-speed and heavy-load transmission systems, the influence of power on the mesh force was more significant. It could also be found that the efficiency of the transmission system composed of a spiral bevel gear and a planetary gear was improved compared with that of the traditional system. Finally, the effectiveness of the dynamic model was validated through a comparison of the test signals. The results of the analysis in this study can be used to guide the design of vibration and noise reduction.
Assessment of Sustainable Reverse Logistic Provider Using the Fuzzy TOPSIS and MSGP Framework in Food Industry
Authors: Wang Yu-Lan , Liao Chin-Nung
Published: February 2023

As consumers become ever more conscious of environmental issues, socially responsible corporate practices, and government regulations, companies are increasingly motivated to incorporate reverse logistics (RLs) into their operations, thus raising the question of provider selection. In previous studies, the food industry generally lacked a systematic reference method for RLs provider selection, especially during the post-COVID-19 pandemic. This study aims to develop a comprehensive approach that combines a technique for order preference by similarity to ideal solution (TOPSIS) and multi-segment goal programming (MSGP) models to select optimal RLs providers. Furthermore, this method will enable decision makers (DMs) to evaluate and select the best RLs provider considering the limited resources of the business. This approach allows DMs to consider both qualitative and quantitative criteria, set multiple target segmentation expectations, and achieve optimal RLs provider selection. This study also provides case studies of applications by food manufacturers. The main finding is that considering multiple criteria in making a decision produces better results than using a single criterion.
An Accessibility Measurement Based on Commuter Behaviour and Living Conditions: An Empirical Analysis of the High-Speed Railway Network in the East of China
Authors: Zhang Enshou , Chen Lei , Kuang Pei , Dickinson David G.
Published: February 2023

High-speed railways as a competitive intercity transport solution in areas of high population density have been constructed rapidly in the last decade. Accessibility measurements have been frequently tested and applied with various definitions, indicators, and processing methods for assessing traffic system utility. In this paper, an improved method of accessibility measurement based on travellers’ profitability is introduced. Three levels of accessibility indicators, Daily Commute Accessibility (DACC), Daily Work Commute Accessibility (DWACC), and Weekly Commute Accessibility (WACC) were designed based on different commuting frequencies and purposes. The average traveller’s income and local living cost were integrated to simulate the real commute scenario and assess the status of the transport system. In the case study, a series of statistics, containing 50 lines of travelling data and 10 years of economic data, was collected from the historical railway service record and local economy yearbook, in an area with 11 cities connected by conventional normal-speed and upgraded HSR networks in the east of China. An index sheet measuring the three levels of accessibility indicated the changes in the travel benefit ratio throughout the test period following popularisation of the high-speed service. To validate the practicability of the new methodology, regression analysis of four groups of panel data, including the accessibility index and local demographic data, was implemented to illustrate the population fluctuation impacted by the HSR services. The results proved that the HSR service is more beneficial in reducing population aggregation than the conventional railway service, which has the opposite effect, leading to the generation of cities with a high population density, and could help to rebalance the local uneven population distribution and promote the progress of urbanisation.
Soil Heavy Metal Absorption Potential of Azolla pinnata and Lemna gibba with Arbuscular Mycorrhizal Fungi in Rice (Oryza sativa L.) Farming
Authors: Herath Bimal Manuranga , Bamunuarachchige Chaturanga , Stephenson Steven L. , Elgorban Abdallah M. , Asad Suhail , Kumla Jaturong , Suwannarach Nakarin , Karunarathna Samantha C. , Yapa Pinnaduwage Neelamanie
Published: February 2023

This study assessed the potential uptake of soil-contaminated heavy metals by Azolla pinnata and Lemna gibba in combination with and without arbuscular mycorrhizal fungi (AMF) in traditional and improved rice varieties. Total levels of cadmium (Cd), lead (Pb), mercury (Hg), and arsenic (As) in soil, rice roots, shoots, grains, A. pinnata, and L. gibba were estimated using ICP-MS. The percentage colonization in AMF-inoculated and AMF-uninoculated rice varied from 1.13–30.67% and 1.33–5.42%, respectively. These findings suggested that AMF provide protection to rice plants against the combined toxicity of Cd, As, Pb, and Hg in rice field soil. The combined interaction of AMF, organic fertilizer, and A. pinnata decreased heavy metal accumulation in rice roots, shoots, and grains in both tested varieties. The intake and subsequent accumulation of Cd, As, Pb, and Hg in the rice grains differed significantly (p < 0.05) between the two rice varieties. Furthermore, it was revealed that the AMF-inoculated rice plants reduced the translocation of heavy metals from root to shoot. Therefore, it can be concluded that heavy metal absorption and accumulation in rice can be reduced by the application of AMF, organic fertilizer, and A. pinnata together in rice farming.
The Role of Work Integration Social Enterprises in Achieving Sustainable Development Goals during the COVID-19 Pandemic: The Case Study of Lithuania
Authors: Urmanavičienė Audronė , Butkevičienė Eglė
Published: February 2023

The Sustainable Development Goals (SDGs), which are internationally agreed-upon commitments to sustainable development, represent the global development agenda. Lithuania, along with other 192 countries, has committed to achieving these goals by 2030. The purpose of these goals is to achieve a better and more sustainable future for all and ensure that no one is left behind. As emphasized by SDG #17, an important role in achieving all SDGs is played by partnerships among all stakeholders, including partnerships developed by businesses and, especially, social businesses. In Lithuania, social businesses mostly act as work integration social enterprises (WISEs), working with the most vulnerable societal groups and ensuring their social integration into society, thus contributing toward the achievement of the SDGs. However, the COVID-19 pandemic has prevented businesses from performing their usual activities and, subsequently, from achieving their social missions. Thus, in this study, we aimed to analyze the role of WISEs in achieving the SDGs during the COVID-19 pandemic in Lithuania. The study is based on the interviews with Lithuanian de facto WISE leaders. The findings showed that the WISEs in Lithuania mainly contributed to SDG #1 “No poverty”, SDG #2 “Zero hunger”, SDG #3 “Good health and well-being”, SDG #4 “Quality education”, SDG #8 “Decent work and economic growth”, and SDG #16 “Peace and justice” during the pandemic.
Review of Contributions to the Special Edition: New Applications of Symmetry in Lattice Field Theory
Authors: Catterall Simon , Hands Simon
Published: February 2023

Symmetry has been at the heart of lattice field theory since its inception [...]
New Schiff Base–TMB Hybrids: Design, Synthesis and Antiproliferative Investigation as Potential Anticancer Agents
Authors: Alyamani Najiah M.
Published: February 2023

The structural symmetry or asymmetry of organic compounds is one of the most fundamental characteristics. Z-geometrical isomers are promiscuous and kinetically preferred structures with a plethora of biological activities. A new series of hybrid molecules containing Schiff base and 3,4,5-trimethoxybenzamide moieties were synthesized from the starting material ethyl acrylate ester derivative (Z)-1 and structurally confirmed by elemental microanalysis, 1H-NMR, and 13C-NMR spectroscopic studies. The in vitro cytotoxic activity of the target hybrids was tested against the MCF-7 breast cancer line compared with colchicine as the reference compound. Most of the newly synthesized hybrids showed good growth inhibition activity against the MCF-7 cells compared to the reference substance. The results of the β-tubulin polymerization inhibition activity assay showed that the p-vanillin Schiff base 4g displayed good inhibition activity. In addition, p-vanillin Schiff base 4g exhibited antiproliferative activity over the MCF-7 cells by cellular cycle blockade at the G2/M phase and it is a potent apoptotic agent. qRT-PCR analysis showed that Schiff base 4g boosted the mRNA expression of the p53 and Bax levels while lowering the expression of the Bcl-2 level.
P1 Component Discloses Gender-Related Hemispheric Asymmetries during IAPS Processing
Authors: Romeo Zaira , Spironelli Chiara
Published: February 2023

Background: Although some studies showed distinct electrophysiological correlates of emotions in men and women about 300 ms after the stimulus onset, little is known about the automatic visual phases of emotional processing. Investigating both early and late event-related potential (ERP) components (e.g., the P1, P300) could allow us to clarify the effect of gender on the temporal dynamics underlying emotional processing. Methods: Twenty men and twenty women similar in age, education and empathy traits passively viewed emotional and neutral IAPS pictures during EEG recording, providing their subjective evaluations about valence and arousal. ERP and source analyses were implemented to examine gender effects on emotional processing. Results: The P1 analysis revealed gender-related asymmetries, consisting of the greater amplitude of right vs. left parietal sites for women, and bilateral activation for men, almost for each emotional category. These findings were also supported by source analyses. Conversely, during the fear stimulus processing, women showed an involvement of the left cuneus, and men of the right homologous. No group differences appeared in the P300 component analysis. Conclusions: Our findings support the hypothesis that men and women adopt different strategies when processing visual emotional information, and suggest that gender is a crucial variable in emotional research.
Post-Pandemic Lessons for Destination Resilience and Sustainable Event Management: The Complex Learning Destination
Authors: Carswell Jesse , Jamal Tazim , Lee Seunghoon , Sullins Donna Lee , Wellman Kelly
Published: February 2023

This paper aims to share post-pandemic lessons for destination resilience and the sustainability of events. It offers a new perspective that reimagines the space and place of events as learning destinations enmeshed in complex systems. Complexity arises due to the interactions and interrelationships between numerous stakeholders, activities, and events in the social–ecological destination system, where boundaries are porous, and issues and actions from afar can impact the local community. The case presented here describes the micro-level activities and actions undertaken to engage with destination resilience and sustainable event management and certification at a learning destination in Texas, USA. These situated efforts are shown (i) at the campus-wide level for the university and (ii) with the collaborative, learning-oriented activities undertaken by students in event management classes to pilot test the Sustainable Event Certification Checklist that was developed. They corroborate the general characteristics and criteria of the complex learning destination summarized in the paper, along with identifying and discussing the skills, literacies, and lessons learned to advance destination resilience and the sustainability of events. Participants in the learning destination draw on practical knowledge and develop soft skills to engage in adaptive planning proactively and collaboratively with other stakeholders to address emergent challenges and practical problems in the complex destination and sustainable event domain.
Multiple Year Influences of the Aflatoxin Biocontrol Product AF-X1 on the A. flavus Communities Associated with Maize Production in Italy
Authors: Ouadhene Mohamed Ali , Ortega-Beltran Alejandro , Sanna Martina , Cotty Peter J. , Battilani Paola
Published: February 2023

AF-X1 is a commercial aflatoxin biocontrol product containing the non-aflatoxigenic (AF-) strain of Aspergillus flavus MUCL54911 (VCG IT006), endemic to Italy, as an active ingredient. The present study aimed to evaluate the long-term persistence of VCG IT006 in the treated fields, and the multi-year influence of the biocontrol application on the A. flavus population. Soil samples were collected in 2020 and 2021 from 28 fields located in four provinces in north Italy. A vegetative compatibility analysis was conducted to monitor the occurrence of VCG IT006 on the total of the 399 isolates of A. flavus that were collected. IT006 was present in all the fields, mainly in the fields treated for 1 yr or 2 consecutive yrs (58% and 63%, respectively). The densities of the toxigenic isolates, detected using the aflR gene, were 45% vs. 22% in the untreated and treated fields, respectively. After displacement via the AF- deployment, a variability from 7% to 32% was noticed in the toxigenic isolates. The current findings support the long-term durability of the biocontrol application benefits without deleterious effects on each fungal population. Nevertheless, based on the current results, as well as on previous studies, the yearly applications of AF-X1 to Italian commercial maize fields should continue.
Tolman VI Fluid Sphere in f(R,T) Gravity
Authors: Mondal Monimala , Rahaman Farook
Published: February 2023

We analyze the behavior of relativistic spherical objects within the context of modified f(R,T) gravity considering Tolman VI spacetime, where the gravitational Lagrangian is a function of the Ricci scalar (R) and trace of energy momentum tensor (T), i.e, f(R,T) = R + 2βT, for some arbitrary constant β. For developing our model, we have chosen £m = −p, where £m represents the matter Lagrangian. For this investigation, we have chosen three compact stars, namely PSR J1614-2230 (Mass = (1.97 ± 0.4)M⊙; Radius = 9.69+0.02−0.02 km), Vela X-1 (Mass = (1.77 ± 0.08)M⊙; Radius = 9.560+0.08−0.08 km) and 4U 1538-52 (Mass = (9.69)M⊙; Radius = 1.97 km). In this theory, the equation of pressure isotropy is identical to the standard Einstein’s theory. So, all known metric potential solving Einstein’s equations are also valid here. In this paper, we have investigated the effort of a coupling parameter (β) on the local matter distribution. The sound of speed and adiabatic index are higher with grater values of β, while on the contrary, the mass function and gravitational redshift are lower with higher values of β. For supporting the theoretical results, graphical representations are also employed to analyze the physical viability of the compact stars.
Recent Developments in Warm Inflation
Authors: Kamali Vahid , Motaharfar Meysam , Ramos Rudnei O.
Published: February 2023

Warm inflation, its different particle physics model implementations, and the implications of dissipative particle production for its cosmology are reviewed. First, we briefly present the background dynamics of warm inflation and contrast it with the cold inflation picture. An exposition of the space of parameters for different well-motivated potentials, which are ruled out, or severely constrained in the cold inflation scenario, but not necessarily in warm inflation, is provided. Next, the quantum field theory aspects in realizing explicit microscopic models for warm inflation are given. This includes the derivation of dissipation coefficients relevant in warm inflation for different particle field theory models. The dynamics of cosmological perturbations in warm inflation are then described. The general expression for the curvature scalar power spectrum is shown. We then discuss in detail the relevant regimes of warm inflation, the weak and strong dissipative regimes. We also discuss the results predicted in these regimes of warm inflation and how they are confronted with the observational data. We explain how the dissipative dynamics in warm inflation can address several long-standing issues related to (post-) inflationary cosmology. This includes recent discussions concerning the so-called swampland criteria and how warm inflation can belong to the landscape of string theory.
Manganese Mediates Its Antiviral Functions in a cGAS-STING Pathway Independent Manner
Authors: Sun Shaohua , Xu Yulin , Qiu Ming , Jiang Sen , Cao Qi , Luo Jia , Zhang Tangjie , Chen Nanhua , Zheng Wanglong , Meurens Francois , Liu Zongping , Zhu Jianzhong
Published: February 2023

The innate immune system is the first line of host defense sensing viral infection. Manganese (Mn) has recently been found to be involved in the activation of the innate immune DNA-sensing cGAS-STING pathway and subsequent anti-DNA virus function. However, it is still unclear whether Mn2+ mediates host defense against RNA viruses. In this study, we demonstrate that Mn2+ exhibited antiviral effects against various animal and human viruses, including RNA viruses such as PRRSVs and VSV, as well as DNA viruses such as HSV1, in a dose-dependent manner. Moreover, cGAS and STING were both investigated in the Mn2+ mediated antiviral roles using the knockout cells made by the CRISPR-Cas9 approach. Unexpectedly, the results revealed that neither cGAS knockout nor STING knockout had any effect on Mn2+-mediated antiviral functions. Nevertheless, we verified that Mn2+ promoted the activation of the cGAS-STING signaling pathway. These findings suggest that Mn2+ has broad-spectrum antiviral activities in a cGAS-STING pathway independent manner. This study also provides significant insights into redundant mechanisms participating in the Mn2+ antiviral functions, and also indicates a new target for Mn2+ antiviral therapeutics.
Advances in Antiviral Delivery Systems and Chitosan-Based Polymeric and Nanoparticulate Antivirals and Antiviral Carriers
Authors: Žigrayová Dominika , Mikušová Veronika , Mikuš Peter
Published: February 2023

Current antiviral therapy research is focused on developing dosage forms that enable highly effective drug delivery, providing a selective effect in the organism, lower risk of adverse effects, a lower dose of active pharmaceutical ingredients, and minimal toxicity. In this article, antiviral drugs and the mechanisms of their action are summarized at the beginning as a prerequisite background to develop relevant drug delivery/carrier systems for them, classified and briefly discussed subsequently. Many of the recent studies aim at different types of synthetic, semisynthetic, and natural polymers serving as a favorable matrix for the antiviral drug carrier. Besides a wider view of different antiviral delivery systems, this review focuses on advances in antiviral drug delivery systems based on chitosan (CS) and derivatized CS carriers. CS and its derivatives are evaluated concerning methods of their preparation, their basic characteristics and properties, approaches to the incorporation of an antiviral drug in the CS polymer as well as CS nanoparticulate systems, and their recent biomedical applications in the context of actual antiviral therapy. The degree of development (i.e., research study, in vitro/ex vivo/in vivo preclinical testing), as well as benefits and limitations of CS polymer and CS nanoparticulate drug delivery systems, are reported for particular viral diseases and corresponding antivirotics.
Increasing Influenza Vaccination in Primary Healthcare Workers Using Solidary Incentives: Analysis of Efficacy and Costs
Authors: Bengoa Terrero Christian , Bas Villalobos Marian , Pastor Rodríguez-Moñino Ana , Lasheras Carbajo María Dolores , Pérez-Villacastín Julián , Fernández Pérez Cristina , García Torrent María Jesús , Sánchez-del-Hoyo Rafael , García Lledó Alberto
Published: February 2023

Introduction: Influenza vaccination campaigns have difficulty in reaching the 75% uptake in healthcare workers (HCWs) that public health organizations target. This study runs a campaign across 42 primary care centers (PCCs) where for every HCW vaccinated against influenza, a polio vaccine is donated through UNICEF for children in developing nations. It also analyses the efficacy and cost of the campaign. Method: This observational prospective non-randomized cohort study was conducted across 262 PCCs and 15.812 HCWs. A total of 42 PCCs were delivered the full campaign, 114 were used as the control group, and 106 were excluded. The vaccine uptake in HCWs within each of those PCCs was registered. The cost analysis assumes that campaign costs remain stable year to year, and the only added cost would be the polio vaccines (0.59€). Results: We found statistically significant differences between both groups. A total of 1423 (59.02%) HCWs got vaccinated in the intervention group and 3768 (55.76%) in the control group OR 1.14, CI 95% (1.04–1.26). In this scenario, each additional HCW vaccinated in the intervention group costs 10.67€. Assuming all 262 PCCs had joined the campaign and reached 59.02% uptake, the cost of running this incentive would have been 5506€. The potential cost of increasing uptake in HCWs by 1% across all PCC (n = 8816) would be 1683€, and across all healthcare providers, 8862€ (n = 83.226). Conclusions: This study reveals that influenza vaccination uptake can be innovative by including solidary incentives and be successful in increasing uptake in HCWs. The cost of running a campaign such as this one is low.
The Impact of Water Resources Tax Policy on Water Saving Behavior
Authors: Wang Lei , Muniba  , Lakner Zoltán , Popp József
Published: February 2023

The Chinese water administration department has continuously explored and formulated regulatory and market-oriented water control policies to alleviate the contradiction between water shortage and economic and social development and promote the new idea of ‘water-saving first’ water control. Among them, implementing a water resources tax policy as a price means has achieved initial success. The water-saving effect of water resources tax collection is one of the important bases for determining whether the tax reform will be promoted nationwide in the next stage. Based on this, taking Hubei Province, the first tax reform pilot in China, as an example, water resource elements are integrated into the economic system and a dynamic stochastic general equilibrium model (DSGE) is constructed, embedded in water resources tax to simulate the persistent impact of such a tax on water saving objectives. The research shows that: (1) A water resources tax can effectively achieve the goal of water-saving and improve the utilization efficiency of water resources. (2) Levying a water resources tax helps to improve the water-saving awareness of enterprises and residents and promotes enterprises to optimize their production structure. (3) Rational and efficient use of special water resources protection funds is the basis for ensuring the effective implementation of a water resources tax. It can also improve the recycling capacity of water resources. This means that the government should speed up the exploration of the relationship between supply and demand for comprehensive water resources, to establish a reasonable range of water resources tax rates to guarantee people’s livelihoods, and to accelerate the construction of water resources tax guarantee measures, in order to achieve a relatively steady-state of water resources utilization and protection, realizing the dual goal of sustainable economic development and sustainable use of water resources.