Perception Of Quality Research Articles

A systematic review of deep learning-based denoising for low-dose computed tomography from a perceptual quality perspective.

Low-dose computed tomography (LDCT) scans are essential in reducing radiation exposure but often suffer from significant image noise that can impair diagnostic accuracy. While deep learning approaches have enhanced LDCT denoising capabilities, the predominant reliance on objective metrics like PSNR and SSIM has resulted in over-smoothed images that lack critical detail. This paper explores advanced deep learning methods tailored specifically to improve perceptual quality in LDCT images, focusing on generating diagnostic-quality images preferred in clinical practice. We review and compare current methodologies, including perceptual loss functions and generative adversarial networks, addressing the significant limitations of current benchmarks and the subjective nature of perceptual quality evaluation. Through a systematic analysis, this study underscores the urgent need for developing methods that balance both perceptual and diagnostic quality, proposing new directions for future research in the field.

VPRF: Visual Perceptual Radiance Fields for Foveated Image Synthesis.

Neural radiance fields (NeRF) has achieved revolutionary breakthrough in the novel view synthesis task for complex 3D scenes. However, this new paradigm struggles to meet the requirements for real-time rendering and high perceptual quality in virtual reality. In this paper, we propose VPRF, a novel visual perceptual based radiance fields representation method, which for the first time integrates the visual acuity and contrast sensitivity models of human visual system (HVS) into the radiance field rendering framework. Initially, we encode both the appearance and visual sensitivity information of the scene into our radiance field representation. Then, we propose a visual perceptual sampling strategy, allocating computational resources according to the HVS sensitivity of different regions. Finally, we propose a sampling weight-constrained training scheme to ensure the effectiveness of our sampling strategy and improve the representation of the radiance field based on the scene content. Experimental results demonstrate that our method renders more efficiently, with higher PSNR and SSIM in the foveal and salient regions compared to the state-of-the-art FoV-NeRF. The results of the user study confirm that our rendering results exhibit high-fidelity visual perception.

Scene-aware Foveated Rendering.

We propose a new scene-aware foveated rendering method, which incorporates the scene awareness and characteristics of the human visual system into the mapping-based foveated rendering framework. First, we generate the conservative visual importance map that encodes the visual features of the scene, visual acuity, and gaze motion. Second, we construct the pixel size control map using a convolution kernel method. Third, we utilize the pixel size control map to guide the foveated rendering. At last, a temporal coherent refinement strategy is used to maintain the smooth foveated rendering for the adjacent frames. Compared to the state-of-the-art mapping-based foveated rendering methods using the same compression ratio, our method achieves smaller MSE, higher PSNR, and SSIM in the fovea, periphery, salient regions, and the whole image. We also conducted user studies, and the results proved that the perceptual quality of our method has a high visual similarity with the around truth rendered with the full resolution.

Relationships Between Psychological Flexibility, Psychological Capital and Marital Quality Amongst Parents of Children With Autism Spectrum Disorder

ABSTRACTThis study aims to explore the differences in psychological flexibility, psychological capital and the perception of marital quality between parents of children with and without autism and to examine whether psychological capital could serve as a moderator of the association between psychological flexibility and the perception of marital quality. One‐hundred fifty parents of children with autism and 192 parents of children without autism completed an online survey. Parents of children with autism had lower psychological flexibility and psychological capital than the comparison group. The levels of psychological flexibility and psychological capital were also found to be significantly and positively correlated with the perception of marital quality of parents in both groups. Amongst parents of children with autism, hope significantly moderated the association between psychological flexibility and the perception of marriage quality. Hope buffers the relationship between psychological flexibility and the perception of marital quality amongst parents of children with autism. Designing unique, specific and tailored therapeutic interventions for parents of children with autism is recommended.

Spinal cord stimulation combined with exercise in patients diagnosed with persistent spinal pain syndrome. Study protocol for a randomized control trial.

Administration of spinal cord stimulation to individuals with PSPS-T1/2 may induce supraspinal descending activation. Similarly, exercise is recognized as a fundamental aspect of spinal pain management. Studies have demonstrated its impact on neurophysiological factors, including the release of spinal and supraspinal beta-endorphins, which activate μ-opioid receptors. Therefore, the purpose of this study will be to examine the effect of SCS in combination with lumbo-pelvic stability core training on perceived low back pain, quality of life and disability in PSPS-T2 patients. A double-blind randomized clinical trial (RCT) has been designed. All participants will be randomized from a pre-set sequence. The intervention design has been elaborated from the CONSORT guidelines. This study has been registered at Clinicaltrial.gov (NCT06272539). Sample size was calculated using G Power® Sample size software (University of Düsseldorf). The calculation was based on a moderate effect size of 0.7 (partial η2 = 0.70, α = .05, power = 0.95), resulting in a total of 40 patients. Assuming a 30% dropout rate, 52 participants will be recruited in total. Two sessions per week will be scheduled for 8 weeks with a total of 16 sessions. Each work session will have a duration of 60 minutes. The exercise will be adapted according to the phases based on the results already published, limiting in each phase the degrees of flexion and extension of the spine to avoid the risk of electrode migration. Primary outcomes will be functionality, satisfaction, strength, psychosocial variables, quality of life and pain perception.

The Influence of Product Quality and Price on Purchasing Decisions of Glad2glow Skincare Products

This research is based on a phenomenon in the modern era where consumers are increasingly aware of the importance of skin care, making skincare products the main choice to support appearance. Glad2Glow, a new skincare brand that entered the Indonesian market in 2023, has attracted a lot of buyers' attention and created fierce competition between brands with product quality and price perception as the main factors in consumers' purchase decisions. This research is quantitative using primary data obtained through the distribution of online questionnaires (Google Form) from May 2024 to August 2024. The population and sample include all consumers who have purchased or used Glad2Glow skincare products. The independent variables are product quality (X1) and price perception (X2), while the dependent variable is the purchase decision (Y). The analysis method involves multiple linear regression analysis, validity and reliability tests, as well as classical assumption tests such as normality tests, multicollinearity tests, heteroscedasticity tests, and hypothesis tests. The results of this study show that (1) product quality variables have a partial effect on the purchase decision of Glad2Glow skincare products, (2) price perception variables have a partial effect on the purchase decision of Glad2Glow skincare products, (3) product quality variables and price perception have a simultaneous effect on the purchase decision of Glad2Glow skincare products.

The Influence of External Audit Quality on Discretionary Accruals and Real Earnings Management Practices: An Analysis of Malaysian Firms

This paper aims to analyse the mitigating effects of external audit quality (EAQ) factors on earnings management (EM) practices. Data were collected from firms listed on Bursa Malaysia’s main market, covering the years 2011 through 2022. Panel regression was employed to analyse the data. The findings of this study confirmed a significant negative association between audit reputation, audit quality, audit opinions, and EM of listed firms in Malaysia. Audit fees and audit tenure were found to be not significant in relation to EM. The study included five control variables in the analysis, and only economic value added (EVA) was found to be significant. The findings suggest that a number of audit quality factors are indicative of EM among listed firms. The authors extend, as well as contribute to, the growing literature on the EAQ, and therefore, wider corporate governance literature. Thus, it provides originality by presenting empirical evidence and outcomes to fully understand how discretionary accrual and real EM affect EAQ in the Malaysian context. Therefore, stakeholders should place higher concern on the selection of an external auditor, and investors should take into account the external audit factors when making investment decisions. Measuring the effectiveness of EAQ allows decision-makers to evaluate how effective employed governance measures are in improving shareholders’ perceptions of financial information quality and mitigating EM practices.

Research on the influence of perceived quality on users’ continuance usage intention of online live streaming class platforms: the mediating role of flow experience and the moderating impact of perceived usefulness

BackgroundWith the penetration of the “Internet+” into social life, the digitization of education has become a trend and national demand. Alongside the rise of the “Everyone Live Streaming” era, online live streaming class platforms have rapidly grown due to favorable user experiences.MethodsGrounded in the Expectation Confirmation Theory, this study employed questionnaire surveys to investigate the influence mechanism of perceived quality, flow experience, and perceived usefulness on individuals’ continuance usage intention of online live streaming class platforms.ResultsThrough the analysis of 773 survey responses, this study reveals several key findings. Firstly, perceived quality significantly and positively affects users’ intention to continue using the online live streaming class platforms. Secondly, flow experience partially mediates the relationship between perceived quality and continuance usage intention, underscoring its significance in user decision-making. Additionally, Perceived usefulness negatively moderates the relationship between perceived quality and flow experience, demonstrating varied effects.ConclusionOn the one hand, online live streaming platforms should actively invest in improving the quality of user perception, as this can lead to a better user flow experience and continued willingness to use. On the other hand, they should also pay more attention to the user’s flow experience, which has a direct impact on the user’s propensity to continue to use. Besides, the perceived usefulness of the online live class by the user should also be taken seriously.

The Impact of AI on International Trade: Opportunities and Challenges

This study aims to explore the transformative potential of Artificial Intelligence (AI) in international trade, focusing on its key roles in optimizing trade operations, enhancing trade finance, and expanding market access. In trade optimization, AI leverages advanced machine learning and predictive analytics to enhance demand forecasting, route optimization, and customs procedures, leading to more efficient logistics and inventory management. In trade finance, AI can automate document processing and risk assessment, increasing access to finance and enhancing transactional transparency, particularly through integration with blockchain technology. In terms of market access, AI-driven analytics can identify consumer trends and competitive dynamics, enabling personalized marketing and overcoming linguistic and cultural barriers. Due to the lack of quantitative data, this study employed qualitative research methods, specifically a multiple-case-study approach. The case studies of leading companies such as Alibaba, DHL, and Maersk showcase how they leverage AI to optimize their trade operations, improve customer service, and achieve greater efficiency. These real-world examples demonstrate AI’s practical applications and significant benefits in the global trade landscape. However, the adoption of AI in international trade is not without challenges. These include issues around data quality, ethical concerns, technological complexity, and public perception. Policy recommendations highlight the need for a robust data infrastructure, establishing ethical AI guidelines, and fostering international cooperation to align data protection regulations.

Perception of food quality among Saudi consumers

Consumers’ perceptions of quality of food products increase their purchasing likelihood. This study provides a framework for exploring consumers’ perceptions of food quality for food product development and food market-ing strategies by providing vital information related to consumer behavior and food choice. It establishes a method for measuring food quality perceptions through a validated questionnaire. It was found that adult consumers in Riyadh City, Saudi Arabia, perceive intrinsic food characteristics higher than of extrinsic food characteristics. Characteristics related to product safety, nutritional value, and sensory attributes were the most highly valued aspects. Sociodemographic factors such as age, marital status, education, occupation, income, and work/study in the food field were found to affect Saudi consumers’ perceptions of food quality. Furthermore, marital status, education, occupation, and income were the major classification factors for perception trends. Food identity and processing, food health prosperity, food safety and presentation, and food sensory attributes were the major qual-ities perceived by Saudi consumers.

Preharvest salicylic acid and chitosan treatments reduce red drupelet reversion and enhance antioxidant capacity in blackberry fruit

Red drupelet reversion (RDR) is a postharvest physiological disorder affecting fresh blackberries during commercialization. The drupelets revert from fully black to red, causing detriments of the commercial value. The specific mechanism is still being investigated, some reports suggest that the occurrence of RDR is associated with pigment degradation in the fruit, and can be caused or aggravated by mechanical damage and storage conditions. Even, though studies report no significant alteration in blackberry organoleptic properties caused by RDR, the visual aspect of it affects the consumer perception of the fruit quality reducing marketability and ultimately generating economic losses. In this regard, preharvest treatments have been recently reported to have positive effects in reducing RDR in blackberries. In this study, we investigated the effects of chitosan (COS) and salicylic acid (SA) as preharvest treatments on the phenolic compound content and antioxidant capacity of blackberry fruit. The results showed that SA 3 mM and COS 0.25% treatments increased the total phenolic and flavonoid content while also enhancing the antioxidant capacity of blackberries. We also observed that the content of specialized metabolites and the activity of antioxidant enzymes have a negative correlation with the occurrence of RDR in blackberries.

Utilization patterns and preferences of telemedicine services in the post-Covid-19 era in Israel

Abstract Background While telemedicine can streamline healthcare delivery, suboptimal use may compromise care quality and access. Given the increased adoption of these services during and after the Covid-19 pandemic, understanding best practices through examination of utilization patterns and patient preferences is crucial. This study estimated utilization rates, patient preferences and perceptions of response received for different physician-encounter channels for common clinical and administrative scenarios. Methods Cross-sectional telephone survey in Hebrew or Arabic of 519 Israelis who contacted a doctor in the past year for clinical or administrative needs. Data collected during April-June 2023, focused on chosen contact channel, reasons for choice, perceived response adequacy, and hypothetical future preferences. Findings 78% of encounters with family physician for clinical need were in-person, with lower rates for phone (16%) or messaging (6%); in-person dominated with encounters with specialists (94%). Conversely, for administrative needs, more used phone (15%) or messaging (48%), though 37% still preferred in-person encounter. Video usage was negligible (<1%). Main reasons for in-person choice were perceived need for physical exam, habit, or negative perception of remote service quality. Convenience/exam-free needs drove phone/messaging use. While most patients were satisfied with their chosen channels, phone consultations had lower future preference rates. Conclusions Matching channel to need is crucial. Physical exams require in-person visits, though they are not always required and many stick with in-person out of habit; remote options like messaging can streamline administrative tasks. Patient education could address habits and help familiarize patients with new options. Optimizing phone visits and promoting video options could enhance adoption due to their benefits. Key messages • In-person visits are preferred for clinical needs, while messaging/phone are underutilized for administrative tasks, highlighting missed opportunities for convenient telemedicine options. • Addressing patient habits and perceptions around remote healthcare channels is crucial for optimizing telemedicine adoption and streamlining care delivery.

The Effect of Food Image, Food Satisfaction on Culinary Quality and Behavioral Intention in Sampang Regency

This study aims to explore how perceptions of local food (food image) and consumer satisfaction with culinary experiences (food satisfaction) influence the perception of the culinary quality of the area and how these factors influence consumer behavior, such as intention to revisit or recommend. This study was conducted in Sampang Regency, an area known for its rich culinary heritage. The study population was local culinary consumers who had visited Pak Salim's Bebek Songkem restaurant located in Sampang Regency. Purposive sampling was used to determine respondents with a sample of 193 respondents. Structural equations were used as the analysis method using Smart PLS 4.0. Data were collected through a survey distributed to consumers who enjoyed Bebek Songkem. The study findings revealed that food image had a significant positive effect on culinary quality, while food satisfaction played an important role in strengthening this perception. In addition, food image and food satisfaction significantly influenced behavioral intentions, with higher culinary quality leading to a greater likelihood of positive consumer actions such as revisits and recommendations. These results underscore the importance of improving the image and satisfaction of local culinary experiences to promote Sampang as a culinary destination. This research offers practical insights for local businesses and policy makers in developing strategies to enhance culinary tourism and culinary experiences in the region.

The Relationship Between Nursing Students' Perceptions of Individualized Care and Quality of Care: A Descriptive Cross-sectional Study

This study aims to evaluate nursing students' perceptions of individualized care and quality of care and examine the relationship between them. The population of this descriptive, cross-sectional study consisted of 2nd, 3rd, and 4th-year students (n=416) who were enrolled in the nursing department of a state university. The sample consisted of 275 nursing students. Data were collected online between April and May 2022 using the "Student Information Form", “Individualized Care Scale- Nurse (ICS-A Nurse)” and “Caring Behaviors Inventory-24 (CBI-24)”. Data was analyzed using the Independent samples t-tests, ANOVA, correlation analysis, and regression analysis. The CBI-24 and ICS-A total mean scores were 5.01±0.58 and 4.12±0.53, respectively. The most commonly perceived barrier to providing individualized care was “communication problems”. The ICS-A was found to explain approximately 42.6% of the variance in students' CBI-24 mean score (p

Green beauty: examining factors shaping millennials’ attitudes toward organic personal care products in South Africa

PurposeThis study aims to explore the factors that influence millennials’ attitudes toward organic personal care products, focusing on the role of health consciousness, environmental concerns and quality perceptions.Design/methodology/approachAn electronic, self-administered survey was used to collect 377 responses. The data analysis utilized partial least squares structural equation modeling (PLS-SEM).FindingsThe findings reveal that environmental concerns, health consciousness and perceived behavioral control play a significant role in shaping millennials’ attitudes toward organic personal care products, while the perceived quality of organic personal care products significantly influences their purchase intentions.Practical implicationsThe results of this study provide valuable insights for personal care product manufacturers, retailers and marketers looking to target millennial consumers. By understanding the key factors that influence millennials’ attitudes and purchase intentions, marketers in the personal care product industry can tailor their strategies effectively.Social implicationsThe study’s findings inform strategies that promote healthier and more environmentally conscious consumer behavior. This aligns with broader societal goals of promoting sustainability and health consciousness, contributing to a more environmentally and socially responsible consumer culture.Originality/valueThe study’s contribution lies in its focused exploration of the interplay between health consciousness, environmental concerns and quality perceptions on millennials’ attitudes toward organic personal care products.

Attitudes towards air quality during outdoor exercise amongst habitual exercisers.

The effects of air pollution on health outcomes are well-established. However, little is known about perceptions of air pollution and how it may influence exercise behaviours. The aim of this study was to understand the perceived importance of air pollution during planned exercise, and where relevant, explore how those perceptions may differ between those living in different locations. A questionnaire was disseminated to several running and cycling clubs in the United Kingdom, covering population characteristics to determine urban, rural or coastal residents and exercisers, self-reported asthma, perceptions of air quality during active travel, planned exercise and attitudes towards learning more about the topic. Anonymised responses were gained from 381 adult participants (≥18years and 60% female), 119 of whom answered questions related to active travel. More than half (54%) of all respondents think about the air quality they are exposed to during exercise and how it may affect their health. More urban than rural respondents (59% vs. 47% and p=0.03) think about air quality and the impact it may have on their health when exercising. There were insufficient coastal respondents for direct comparison. Most survey respondents (57%) state that they would take the most severe course of action regarding exercise behaviour by avoiding it altogether during periods ofheavy road traffic. Individuals with self-reported asthma (n=60), irrespective of place of residence, are the most likely to be conscious of the potential effects of air pollution on their health and exercise performance compared to counterparts without self-reported asthma.

Extreme Heat and Air Quality: Community Leader Perspectives on Information Barriers and Opportunities in Two Environmental Justice Communities.

Extreme heat and air pollution exposure are leading causes of adverse cardiorespiratory health outcomes. Exposure reduction strategies are often focused at the local level. This study examined critical challenges community leaders face in understanding and sharing environmental exposure and health information. We conducted interviews with 19 community leaders of two urban environmental justice communities in Massachusetts, United States. Using directed content analysis, we examined air quality and heat perceptions, information and data resources, and barriers to understanding and communicating relevant local information. Participants shared concerns about both poor air quality and extreme heat. They also expressed the opinion that exposure risk information about these topics is siloed; heat and air quality data can be hard to access, interpret, and effectively communicate with community members. Solutions recommended by participants included community engagement, open-data portals, and creative science communication. Increasing sustainable collaborations among academic, government, healthcare, and nonprofit sectors is recommended.

Sleep Quality in Parkinson Disease: Clinical Insights and PSQI Reliability Assessment

AbstractSleep disturbances are prevalent in Parkinson disease (PD), encompassing a spectrum from parasomnias like REM sleep behavior disorder to symptoms of sleep-wake cycle dysregulation, such as insomnia and daytime sleepiness. This research investigates sleep quality in PD patients compared with a matched healthy control group and explores the relationships between PD clinical characteristics and sleep parameters. Additionally, the study assesses the reliability of the Pittsburgh Sleep Quality Index (PSQI) for PD patients by examining internal consistency. The study comprises 52 participants, 27 in the PD group and 25 in the healthy control group, matched for sex and age. Sleep quality revealed that PD patients experienced significantly poorer sleep quality than the control group (p = 0.009). Weak correlations were found between PSQI scores and the modified Hoehn and Yahr scale (p = 0.062), with no correlation observed with the daily equivalent dose of levodopa (L-DOPA). The prevalence of poor sleep quality (PSQI score > 5) was 85.1% for PD patients and 68% for the control group. The internal consistency analysis of the PSQI yielded a Cronbach's α of 0.588 for the PD group. While the PSQI demonstrates utility in detecting general sleep abnormalities and gauging patient perceptions of sleep quality in PD, its limitation as a global score is emphasized. The index prioritizes sleep habits and may not fully capture important sleep disorders in this population. These findings underscore the complex relationship between PD and sleep quality, suggesting the need for a comprehensive approach to assess and address sleep disturbances in PD patients.

Frequency Domain-Based Super Resolution Using Two-Dimensional Structure Consistency for Ultra-High-Resolution Display

Recent advancements in the field of super resolution (SR) have seen the adoption of generative adversarial networks (GANs) for realistic images. In this case, when performing with low-resolution (LR) images, several challenges arise due to the loss of high-frequency details from high-resolution (HR) images, potentially leading to unwanted distortions in the generated SR images. Our paper presents a novel solution by using two-dimensional structure consistency (TSC) for image analysis. The TSC serves as a mask, enabling adaptive analysis based on the unique frequency characteristics of different image regions. Furthermore, a mutual loss mechanism, which dynamically adjusts the training process based on the results filtered by the TSC-based mask, is introduced. Additionally, the TSC loss is proposed to enhance our model capacity to generate precise TSC in high-frequency regions. As a result, our method effectively reduces distortions in high-frequency areas while preserving clarity in regions containing low-frequency components. Our method outperforms other SR techniques, demonstrating superior results in both qualitative and quantitative evaluations. Quantitative measurements, including PSNR, SSIM, and the perceptual metric LPIPS, show comparable PSNR and SSIM values, while the perceptual SR quality is notably improved according to the LPIPS metric.

Assessing the Effectiveness of Digital Marketing in Enhancing Tourist Experiences and Satisfaction: A Study of Thailand’s Tourism Services

Inbound digital marketing strategies play a vital role in the tourism industry, significantly influencing visitors’ decision-making processes, enhancing tourist experiences, and ensuring post-consumption satisfaction. This study explores the effectiveness of digital marketing strategies in shaping tourists’ perceptions of service quality and sustainability and their subsequent impact on overall satisfaction and behavioural intentions. This paper developed a conceptual framework and hypotheses through a comprehensive literature review to assess the causal relationships between digital marketing effectiveness, perceived destination service quality, perceived destination sustainability quality, tourist satisfaction, and behavioural intention. The empirical analysis was conducted using Partial Least Squares Structural Equation Modelling (PLS-SEM) on data collected from 195 international tourists in Thailand’s coastal regions. The results reveal that while digital marketing effectiveness directly influences tourists’ perceptions of service and sustainability quality, it indirectly influences tourist satisfaction and behavioural intentions through these perceptions. The findings highlight the critical role of aligning digital marketing strategies with service quality and sustainability initiatives. Moreover, the developed construct serves as a valuable tool for assessing and maintaining the destination image, helping tourism providers to improve their offerings and continuously foster long-term customer relationships.