Computer art and creative tool making

Thesis (M.S.V.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1985.MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCH.Includes bibliographical references (leaves 124-126).A digital paint package has been developed which places attention on the design of personal "brush " patterns. The user generates an image by iterating these pattern modules on the raster display. During the application of a pattern, it can grow, shrink, and change in opacity level under the user's control. This method of digitally creating images was developed in light of the problem of representing visual characteristics effectively while "painting" with a computer graphics system . Allowing the user to design personal brush patterns, which can be stored in a library of patterns, and to make marks by repeating them, expands the potential visual qualities of the image as demonstrated by sample images included in this thesis. Software functions are provided for creating and editing patterns through a menu of selections. These functions treat individual shapes and colors in a pattern as separate entities that can be manipulated. Shapes can be manipulated individually, or as a selected group. The manipulation functions include the following: move, copy, scale, and delete. Software functions are also provided for the editing of color components. One method allows a color's red, green, and blue components to be adjusted. And the other allows its hue, lightness, and saturation levels to be adjusted.by Yuan-Lin Mao.M.S.V.S

Does mobile social media undermine our romantic relationships? The influence of fear of missing out (FoMO) on young people’s romantic relationship

The widespread use of social media has a transformative effect on people’s work and lives. With the increasing information explosion and more cases of social media addiction, users have been always worried that they have missed some information. FoMO (fear of missing out) of mobile users emerges. FoMO is an important theory that explicates the underlying cognitive, psychological, and social processes of dark or negative sides of online information behaviour (Shen, et al., 2021). This paper explores the impact of FoMO of post-90s generation mobile users on romantic relationship in the context of social media. The questionnaire survey was conducted in December 2017. The sample size was 274 Chinese post-90s (people born in the 1990’s) mobile social media users who were in love for at least one year and unmarried.. The statistical methods such as regression analysis were adopted. The impacts of FoMO on romantic relationship were analyzed from the perspectives of three dimensions of FoMO: cognitive, emotional and behavioural manifestations. The quantitative analysis of survey data employed the statistical package SPSS 26.0. The behavioural manifestation of FoMO has a significant negative effect on romantic relationships, while emotional and cognitive manifestations of FoMO have no significant effects on romantic relationships. This indicates that driven by FoMO, the post-90s mobile users often check the information in device frequently and subconsciously, resulting in excessive information behaviours, which does harm to the development of romantic relationship. It also implies that the view of simply treating the anxiety disorder FoMO as a psychological symptom is debatable.Conclusion. FoMO has affected users’ interpersonal relationship and behaviour in the offline environment, especially for post-90s generation users. This paper enriches the research on the effects of psychology and information behaviour of mobile social media users on their interpersonal relationship.Peer Reviewe

IEEE 802.11be Wi-Fi 7: Feature Summary and Performance Evaluation

While the pace of commercial scale application of Wi-Fi 6 accelerates, the IEEE 802.11 Working Group is about to complete the development of a new amendment standard IEEE 802.11be -- Extremely High Throughput (EHT), also known as Wi-Fi 7, which can be used to meet the demand for the throughput of 4K/8K videos up to tens of Gbps and low-latency video applications such as virtual reality (VR) and augmented reality (AR). Wi-Fi 7 not only scales Wi-Fi 6 with doubled bandwidth, but also supports real-time applications, which brings revolutionary changes to Wi-Fi. In this article, we start by introducing the main objectives and timeline of Wi-Fi 7 and then list the latest key techniques which promote the performance improvement of Wi-Fi 7. Finally, we validate the most critical objectives of Wi-Fi 7 -- the potential up to 30 Gbps throughput and lower latency. System-level simulation results suggest that by combining the new techniques, Wi-Fi 7 achieves 30 Gbps throughput and lower latency than Wi-Fi 6.Comment: 6 pages, 4 figure

Holistic resource allocation for multicore real-time systems

This paper presents CaM, a holistic cache and memory bandwidth resource allocation strategy for multicore real-time systems. CaM is designed for partitioned scheduling, where tasks are mapped onto cores, and the shared cache and memory bandwidth resources are partitioned among cores to reduce resource interferences due to concurrent accesses. Based on our extension of LITMUSRT with Intel’s Cache Allocation Technology and MemGuard, we present an experimental evaluation of the relationship between the allocation of cache and memory bandwidth resources and a task’s WCET. Our resource allocation strategy exploits this relationship to map tasks onto cores, and to compute the resource allocation for each core. By grouping tasks with similar characteristics (in terms of resource demands) to the same core, it enables tasks on each core to fully utilize the assigned resources. In addition, based on the tasks’ execution time behaviors with respect to their assigned resources, we can determine a desirable allocation that maximizes schedulability under resource constraints. Extensive evaluations using real-world benchmarks show that CaM offers near optimal schedulability performance while being highly efficient, and that it substantially outperforms existing solutions

Breakdown of effective-medium theory beyond the critical angle

Effective-medium theory pertains to the theoretical modelling of homogenization, which aims to replace an inhomogeneous structure of subwavelength-scale constituents with a homogeneous effective medium. The effective-medium theory is fundamental to various realms, including electromagnetics and material science, since it can largely decrease the complexity in the exploration of light-matter interactions by providing simple acceptable approximation. Generally, the effective-medium theory is thought to be applicable to any all-dielectric system with deep-subwavelength constituents, under the condition that the effective medium does not have a critical angle, at which the total internal reflection occurs. Here we reveal a fundamental breakdown of the effective-medium theory that can be applied in very general conditions: showing it for deep-subwavelength all-dielectric multilayers even without critical angle. Our finding relies on an exotic photonic spin Hall effect, which is shown to be ultra-sensitive to the stacking order of deep-subwavelength dielectric layers, since the spin-orbit interaction of light is dependent on slight phase accumulations during the wave propagation. Our results indicate that the photonic spin Hall effect could provide a promising and powerful tool for measuring structural defects for all-dielectric systems even in the extreme nanometer scale.Comment: 17 pages, 4 figure