Multi-view Layout Design for VR Concert Experience

Owing to the COVID-19 pandemic, concerts are gradually being held online. Beyond live-streaming, it has recently become popular to utilize various realistic video technologies to add entertainment value and immersion to online concerts. We conducted a multi-view layout design study in a virtual reality environment with a head-mounted display to help users effectively explore and immerse themselves in multiple videos from various angles. Based on an analysis of an existing user interface for multi-view navigation and the characteristics of virtual reality, we proposed four layouts, i.e., 1) an evenly divided space, 2) an evenly divided designated space, 3) a widget type, and 4) an avatar type. We implemented a prototype by applying Korean pop concerts, where multi-view videos are the most actively utilized, and then conducted a user study to evaluate the usability and preferences of the proposed layouts. The results show that it is adequate to arrange the multi-view videos within a 60° to 110° space and on the left and right side of the main view, which is a range that the users can comfortably access. In addition, when placing multiple videos in a designated space, it is helpful to use visual effects or simple avatars to avoid visual burden being placed on the users. © 2022 ACM.

Application of the lean method in designing the layout of face mask manufacturing plants for the prevention of covid-19

The prolonged global coronavirus pandemic (Covid-19) has affected all aspects of life, economy, and society, especially small and medium businesses. To meet this challenge, many companies are transforming models and reorganizing production and operations to adapt to this situation. These companies have adopted a variety of philosophies to remove non-value-Added activities from their production processes to maintain efficiency, flexibility, and profitability. In the context of Industry 4.0, solutions are ready to combine automation technology together with the Lean manufacturing approach. Furthermore, when it comes to efficient use of resources (financial, labor, materials, machine, and equipment), Industry 4.0 should be applied to Lean Processes. Thus, this article shows how to apply the Lean method to optimize plant design to cut waste, improve the efficiency of input resources, increase labor productivity by reducing labor costs, waiting (man-To-man;man-machine), reduced movement, and redundancy of operations in the workflow. Especially, the paper uses the SLP (Systematic Layout Planning) method to arrange the areas, material flow, and supply chain in the factory, Lean application to visualize the factory and combines IoT (Internet of Things). Moreover, using automation and Lean Production theory will support much for factory construction in the future, minimizing irrationalities when applied in practice. The result of the paper will mention a case study on the design and simulation of a face mask plant © 2022 IEEE.

BUILDING A REUSABLE DATA MODEL TO SUPPORT SYSTEMATIC LAY- OUT PLANNING WITH DISCRETE EVENT SIMULATION OF FLEXIBLE MANUFACTURING SYSTEMS

Manufacturing has undergone a greater change in recent years than it has over almost the entire past century. Due to the variety of products, shortening delivery times and changing customer habits, the COVID-19 pandemic has demanded greater flexibility from manufacturing companies than ever before. One of the fundamental parts of manufacturing flexibility is the design of manufacturing layouts, which has so far not followed automation and methodological developments with regard to technological areas of manufacturing. In this article, a new method for supporting traditional factory design methods with digital manufacturing tools is introduced.

The impact of design on workflow: a comparative case study of level I trauma rooms

Purpose>This study aims to examine trauma room staff’s perception of factors that influence workflow in trauma care from a physical environment standpoint.Design/methodology/approach>A semi-structured focus group method was used. Trauma team members, representative of various roles within a team, were recruited from five Level I trauma centers in the USA, through a convenience sampling method. A total of 53 participants were recruited to participate in online focus groups. The Systems Engineering Initiative for Patient Safety model was used to analyze the findings.Findings>In addition to factors directly related to the physical environment, aspects of people and technology, such as crowding and access to technology, were found to be related to the physical environment. Examples of factors that improve or hinder workflow are layout design, appropriate room size, doors, sink locations, access to resources such as X-ray or blood and access to technology. Seamless and uninterrupted workflow is crucial in achieving efficient and safe care in the time-pressured environments of trauma rooms. To support workflow, the physical environment can offer solutions through effective layout design, thoughtful location of resources and technology and room size.Originality/value>Trauma rooms are time-pressured and complex environments where seconds matter to save a patient’s life. Ensuring safe and efficient care requires seamless workflow. However, the literature on workflow in trauma rooms is limited.

Design Proposal for Sign Language Services in TV Broadcasting from the Perspective of People Who Are Deaf or Hard of Hearing

Sign language services are provided so that people with hearing loss are not alienated from socially and politically important information through TV broadcasting. In this paper, we conducted a user survey and evaluation of the current sign language services for deaf or hard-of-hearing (DHH) people, and solutions were proposed for the problems found in the course of the analyses. To this end, a total of five stages of research were conducted. First, the communication problems experienced by DHH individuals and previous studies on their language and information acquisition were investigated. Second, the most typical types of information delivery channels via TV were defined as news, discussions, and weather reports, and by investigating the actual sign language service cases for each type, three visual information delivery elements were identified: sign language interpreters, reference videos, and subtitles. Third, a preference survey, an interview survey, and an eye tracker experiment on the DHH participants were conducted with varying arrangement options of information delivery elements. Fourth, based on the results of the investigations and experiments, the options to be considered when arranging information delivery elements were compiled. The results showed that the sign language interpreter, which is the first element of information delivery, should be presented in a size clearly visible because the visibility of their facial expressions is important. In addition, it is recommended to present the interpreter without a background since DHH participants did not prefer the presence of a background. As for subtitles, which is the third element of information delivery, it was confirmed that the provision of sign language interpretation and subtitles together helped DHH participants to understand the contents more quickly and accurately. Moreover, if there are multiple speakers, individual subtitles for each speaker should be provided so that the viewers can understand who is talking. Reference videos, which are mainly placed on the screen background, the second information delivery element, were considered less important to DHH participants compared to sign language interpreters and subtitles, and it was found that DHH participants preferred reference videos to be visually separated from sign language interpreters. Fifth, based on the overall results of the study, a screen layout design was proposed for each type of information delivery element for DHH people. Contrary to the general conception that there would be no problem in viewing information-delivering TV broadcasts by DHH people simply by placing a sign language interpreter on the screen, the results of this study confirmed that a more delicate screen layout design is necessary for DHH people. It is expected that this study will serve as a helpful guide in providing better sign language services for TV broadcasts that can be conveniently viewed by both DHH and non-disabled people.

Equivalent Impedance Models for Electrochemical Nanosensor-Based Integrated System Design.

Models of electrochemical sensors play a critical role for electronic engineers in designing electrochemical nanosensor-based integrated systems and are also widely used in analyzing chemical reactions to model the current, electrical potential, and impedance occurring at the surface of an electrode. However, the use of jargon and the different perspectives of scientists and electronic engineers often result in different viewpoints on principles of electrochemical models, which can impede the effective development of sensor technology. This paper is aimed to fill the knowledge gap between electronic engineers and scientists by providing a review and an analysis of electrochemical models. First, a brief review of the electrochemical sensor mechanism from a scientist's perspective is presented. Then a general model, which reflects a more realistic situation of nanosensors is proposed from an electronic engineer point of view and a comparison between the Randles Model is given with its application in electrochemical impedance spectroscopy and general sensor design. Finally, with the help of the proposed equivalent model, a cohesive explanation of the scan rate of cyclic voltammetry is discussed. The information of this paper can contribute to enriching the knowledge of electrochemical sensor models for scientists and is also able to guide the electronic engineer on designing next-generation sensor layouts.