Algorithm for real-time colour mixing of a five-channel LED system while optimising spectral quality parameters

Multichannel LED luminaires with more than three channels offer the advantage to vary the spectrum and keeping the chromaticity steady. However, the optimisation calculations of various quality metrics are a challenge for real-time implementation, especially for the limited resources of a luminaire’s microcontroller. Here, we present a method in which a five-channel system is simulated with a quickly solvable 3-channel system by defining virtual channels, each consisting of two LED channels. An analysis of the influence of the parameterisation of the virtual valences on various quality metrics is presented. It shows how these parameters must be set at the time of the mixing calculation, in order to optimise the desired quality aspect. The mixing calculation can thus be carried out in real-time without high hardware requirements and is suitable for further developments, for example, to compensate for colour drift of the LEDs through sensor feedback.

Understanding UX Better: A New Technique to Go beyond Emotion Assessment

User experience (UX) is a quality aspect that considers the emotions evoked by the system, extending the usability concept beyond effectiveness, efficiency, and satisfaction. Practitioners and researchers are aware of the importance of evaluating UX. Thus, UX evaluation is a growing field with diverse approaches. Despite various approaches, most of them produce a general indication of the experience as a result and do not seek to capture the problem that gave rise to the bad UX. This information makes it difficult to obtain relevant results to improve the application, making it challenging to identify what caused a negative user experience. To address this gap, we developed a UX evaluation technique called UX-Tips. This paper presents UX-Tips and reports two empirical studies performed in an academic and an industrial setting to evaluate it. Our results show that UX-Tips had good performance in terms of efficiency and effectiveness, making it possible to identify the causes that led to a negative user experience, and it was easy to use. In this sense, we present a new technique suitable for use in both academic and industrial settings, allowing UX evaluation and finding the problems that may lead to a negative experience.

Do sustainability reporting conduct and corporate governance attributes relate? Empirical evidence from China

Adopting agency and stakeholders theories, this study aims to investigate the relationship between corporate governance attributes (board size, board independence, female directors, and CEO duality) and sustainability reporting conduct in China. The empirical analysis is based on a sample of 10,330 firm-year observations of Chinese listed companies over the period from 2015 to 2018. Data are supplied by WIND and CSMAR databases, whilst regression analysis is applied to test the hypotheses. Results indicate that board size and board independence were found to be positively associated with the sustainability reporting conduct, while female directors and CEO duality both do not have a significant effect on sustainability reporting conduct in the Chinese institutional settings. This paper advances on arguments of the agency and stakeholders theories with these findings. The larger and more independent board facilitates better monitoring of the managers, what leads to decision-making based on a more appreciation of stakeholders’ perspectives. The study is premised on the presence/absence of sustainability reporting, and it does not take into consideration the quality aspect, which can result in erroneous interpretation. The results should not be generalized as the sample was based on China’s companies for 2015–2018. This study has policy implications for managers and policymakers alike concerning designing board composition conducive to sustainability reporting conduct.

Persons with disability perception of facilities management service quality: hospital buildings in Malaysia

PurposeThis study aims to discover the perception of persons with disabilities (PWDs) towards facilities management (FM) service quality at hospital buildings in Malaysia.Design/methodology/approachA questionnaire survey was conducted with 99 respondents in selected hospitals in Selangor, Malaysia.FindingsThis study aims to discover the perception of PWDs towards FM service quality, and it has found a gap for improvement. The area that requires the highest attention includes the importance of (1) assurance on accessibility despite maintenance activity being conducted (2) criticality of facilities maintenance itself, (3) assurance on comfort and safety, (4) reliable medium to ask for assistance or giving feedback, (5) signage that is clearly seen and easily understood and (6) staff responsiveness.Research limitations/implicationsThis instrument is validated by PWDs under the physical disability category only, specifically in the hospital context. Future research is recommended to identify the FM service quality aspect for different categories of disability (sensory, mental or intellectual impairment).Practical implicationsThe findings provide evidence for FM to consider PWDs' perceptions in FM strategy development. Even FM provides a healthcare support system. FM service quality partly reflects healthcare service quality.Social implicationsAccommodating the need of PWDs through the improvement of FM service quality aspect will partly fulfil the right of PWDs for equality of access to healthcare.Originality/valueThis SERVQUAL tools can be improvised and used to measure the perception of PWDs on FM service quality systematically and holistically. Understanding the service quality aspect is important for a facility manager to precisely measure and prioritise what is truly important to the building users with special needs and try to accommodate this need in the management activity.

Kepuasan Konsumen pada Rumah Makan Modern Muara Kapuas dan Rumah Makan Tradisional Yu Sri di Kabupaten Sleman

The restaurant is one of the businesses that is considered as an endless business. It is because a restaurant fulfils human’s need for food every day. Consequently. the more population live in the area, the higher demand for food. It causes the development of the restaurant industry in Yogyakarta to be more rapid. The study is conducted with the purpose to know the consumer satisfaction level of Muara Kapuas restaurant and Yu Sri restaurant and to test the satisfaction differences perceived by the consumers between Muara Kapuas restaurant and YU Sri restaurant. The result of the study shows that consumers are satisfied with the services provided by Muara Kapuas. The customer's Satisfaction in sequence starting from the biggest the service quality, amenity quality, accessibility quality and product quality. The consumers are satisfied with the YU Sri restaurant service. The customer satisfaction of Yu Sri restaurant in sequence starting from the biggest is product quality, service quality, amenity quality and accessibility quality. The analysis result of the customer's satisfaction differences is found between Muara Kapuas is a restaurant and YU Sri restaurant. In the services quality aspect, amenity quality and accessibility quality, the satisfaction level of that of the Muara Kapuas restaurant is higher than the customers of YU Sri restaurant. While in the product quality aspect, The Yu Sri restaurant consumers have satisfaction level than that of the Muara Kapuas Restaurant consumers.

Continuity in general practice as a predictor of mortality, acute hospitalization, and use of out-of-hours services: registry-based observational study in Norway

Background: Continuity, usually considered a quality aspect of primary care, is under pressure. Aim: To analyse the association between longitudinal continuity with a named regular general practitioner (RGP) and use of out-of-hours (OOH) services, acute hospitalization, and mortality. Design and setting: Registry-based observational study in Norway covering 4 552 978 Norwegians listed with their RGPs. Method: Duration of RGP-patient relationship was used as explanatory variable for the use of OOH services, acute hospitalization, and mortality in 2018. Several patient-related and RGP-related covariates were included in the analyses by individual linking to high-quality national registries. Duration of RGP-patient relationship was categorized as 1, 2–3, 4–5, 6–10, 11–15, and > 15 years. Results are given as adjusted odds ratio (OR) with 95 % confidence interval resulting from multilevel logistic regression analyses. Results: Compared with a one-year RGP-patient relationship the OR for use of OOH services decreased gradually from 0.87 (0.86 – 0.88) after 2 – 3 years duration to 0.70 (0.69 – 0.71) after more than 15 years. OR for acute hospitalization decreased gradually from 0.88 (0.86 – 0.90) after 2 – 3 years duration to 0.72 (0.70 – 0.73) after more than 15 years. OR for dying decreased gradually from 0.92 (0.86 – 0.98) after 2 – 3 years duration to 0.75 (0.70 – 0.80) after an RGP-patient relationship of more than 15 years. Conclusion: Length of RGP-patient relationship is significantly associated with lower use of out-of-hours services, fewer acute hospitalizations, and lower mortality. The associations are dose-dependent and probably causative.

Resolving Persistent Packet Collisions through Broadcast Feedback in Cellular V2X Communication

The Third Generation Partnership Project (3GPP) Release 16 defines the sensing-based semi-persistent scheduling (SPS) as the resource allocation scheme for Sidelink Mode 2 in New Radio (NR)-based vehicle-to-everything (V2X) communication. A well-known issue in Mode 2 is the persistent packet collision that results from two or more vehicles repeatedly using the same resource for transmission. It may create serious safety problems when the vehicles are in a situation where only the broadcast safety beacons can assist in driving. To resolve this issue, a solution that relies on the feedback from neighboring vehicles is proposed, through which the vehicles suffering from persistent packet collisions can quickly part and select other resources. Extensive simulations show that the proposed broadcast feedback scheme reduces persistent packet collisions by an order of magnitude compared to SPS, and it is achieved without sacrificing the average packet reception ratio (PRR). Namely, it is the quality aspect (i.e., burstiness) of the packet collisions that the proposed scheme addresses rather than the quantity (i.e., total number of collision losses). By preventing extended packet loss events, the proposed scheme is expected to serve NR V2X better, which requires stringent QoS in terms of the information update delay thereby helping to reduce the chances of vehicle crashes.

Psychologically supportive healing environment for sustainability in healthcare facilities: A case study

The design and construction of healthcare facilities are some of the significant foundations for the survival and healthy living of a happy society. In terms of the sustainable quality aspect in healthcare facilities, the structural safety and functional efficiency were primarily analyzed. In the further development, it turned into the healing healthcare centers together with the inclusion of aesthetic and cultural values as well as psychological and physical needs of individuals. With such developments, the concept of psychosocially supporting design has come into prominence through improving as a connection to nature, social support enhancement, stimulating design features, complexity, and coherence factors. Our article analyses the subject based on the indoor space planning elements for user’s psychological positive experience upon defining the factors with their spatial characteristics in consideration with the study regarding a conceptual model of the supportive healing environment. A hospital project, which is in the pre-design phase and still under development in the Near East University, was analyzed as the case study under this study.

Severity Prediction for Bug Reports Using Multi-Aspect Features: A Deep Learning Approach

The severity of software bug reports plays an important role in maintaining software quality. Many approaches have been proposed to predict the severity of bug reports using textual information. In this research, we propose a deep learning framework called MASP that uses convolutional neural networks (CNN) and the content-aspect, sentiment-aspect, quality-aspect, and reporter-aspect features of bug reports to improve prediction performance. We have performed experiments on datasets collected from Eclipse and Mozilla. The results show that the MASP model outperforms the state-of-the-art CNN model in terms of average Accuracy, Precision, Recall, F1-measure, and the Matthews Correlation Coefficient (MCC) by 1.83%, 0.46%, 3.23%, 1.72%, and 6.61%, respectively.

The Spatial Diffusion of COVID -19 in the World: Revisiting Hägerstrand's Study of Diffusion in Geography

Geographical theory of diffusion explains the quality aspect of a phenomenon or innovation as well ashow it is distributed over time and across a geographical space.It also seeks to discover the underlying reasons forhow and why this event or phenomenon can be distributed from one region to another. According to this theory, the diffusion process may take place immediately after the appearance of the phenomenon – or centuries later. On a global scale, the distribution of civilizations, the change in the quality of human settlements, the distribution of technology, the quality of nutrition, the distribution of diseases, etc. are among the discussed cases that have taken place over the centuries and millennia. The purpose of this paper is to investigate the distribution of COVID-19 diffusion in both space and time with emphasis on Hägerstrand diffusion theory and McLuhan Global Village theory. The data and information studied here were obtained from the website of the World Health Organization and other updated worldwide statistics on COVID-19. GIS software was used to analyze the data. The findings show that despite the fact that the diffusion theory has not been tested in today's society, and especially in the field of the distribution of emerging diseases which was studied in this research, it can be claimed that prevalence of the COVID-19 virus and other phenomena in the world do not conform to the functions of Hägerstrand’s diffusion theory except in its early stages. This theory has lost its effectiveness due to socio-political changes in the world.