scholarly journals Using Simulation-Based Modeling to Evaluate Light Trespass in the Design Stage of Sports Facilities

2021 ◽  
Vol 13 (9) ◽  
pp. 4725
Author(s):  
Kwang-Hoon Kim ◽  
Gon Kim
Keyword(s):  
Computer Simulation ◽  
Design Stage ◽  
Light Pollution ◽  
Artificial Light ◽  
Sports Facilities ◽  
High Luminance ◽  
Planning Stage ◽  
Artificial Lighting ◽  
Simulation Based ◽  
Improper Use

Artificial light is a pollutant with broad implications for society. Consequently, laws and regulations aimed at curbing the improper use of artificial lighting (i.e., light pollution) are becoming common. For such laws to become effective, light pollution must first be evaluated and quantified. Current methods for evaluating lit environments in sports facilities are only applicable after the facilities have been built, making it challenging to prevent light pollution preemptively. Here, a technique to predict light pollution during the planning stage is proposed. To analyze the upward light generated by the large lights found in sports facilities using a computer simulation, a method of defining a virtual horizontal board above the stadium is proposed. To analyze how light trespasses out of the stadium, a method of dividing and analyzing the space outside the stadium by zone is also presented. In addition, a method to predict the formation of high luminance surfaces under outdoor lighting is presented. The proposed methods are validated on two large sports facilities currently being constructed in Korea. As a consequence, horizontal and vertical illuminances are reduced by 74.5% and 72.2%, respectively. The methods are useful to lighting designers with interest in reducing light pollution.

Autonomous Light Assessment Drone for Dark Skies Studies

2020 ◽  
Author(s):  
Matthew N. Goodell ◽  
Takara E. Truong ◽  
Stephanie R. Marston ◽  
Brett J. Smiley ◽  
Elliot R. Befus ◽  
...  
Keyword(s):  
Low Cost ◽  
Field Tests ◽  
Global Scale ◽  
Local Scale ◽  
Light Pollution ◽  
Artificial Light ◽  
Remote Site ◽  
Improper Use ◽  
Initial Results

Abstract The improper use of artificial light causing skyglow is detrimental to many types of wildlife and can potentially cause irregular human sleeping patterns. Studies have been performed to analyze light pollution on a global scale. However, light pollution data on a local scale is not of ten available and the effects at local scale have rarely been studied. Herein, a new custom-designed autonomous light assessment drone (ALAD) is described for evaluating light pollution at local scale. The ALAD is designed and equipped with a sky quality meter (SQM) to measure skyglow and a low-cost illuminance sensor to measure light from artificial sources. Outdoor field tests are performed at a remote site in central Utah and the measured results are validated against data from lightpollution-map.info. The SQM measurements are in agreement with the estimates from the light pollution map, and the initial results demonstrate feasibility of the ALAD for local-scale skyglow assessment.

scholarly journals Nursing Students’ Experiences with Computer Simulation-Based Communication Education

2021 ◽  
Vol 18 (6) ◽  
pp. 3108
Author(s):  
Ujin Lee ◽  
Heeseung Choi ◽  
Yeseul Jeon
Keyword(s):  
Computer Simulation ◽  
Nursing Education ◽  
Nursing Students ◽  
Communication Patterns ◽  
Mixed Method Research ◽  
Communication Education ◽  
Therapeutic Communication ◽  
Clinical Practicum ◽  
Content Analysis Method ◽  
Simulation Based

Simulation-based communication education has improved nursing students’ communication knowledge and skills. However, communication patterns that students commonly exhibit in simulated situations and students’ responses to specific clinical situations have not been systematically examined. The specific aims of the present study were (1) to identify non-therapeutic communication patterns that nursing students exhibit in simulated situations in the computer simulation-based education (ComEd) program, and (2) explore students’ responses to challenging clinical situations. This study used a mixed-method research design and a convenience sampling method to recruit participants. Frequency analysis and a conventional content analysis method were used to analyze answers provided by participants. A total of 66 students from four Korean nursing schools participated in the study. “False reassurance” was found to be the most common non-therapeutic communication pattern used by nursing students. Nursing students had difficulty in clinical situations such as reporting a patient’s condition to a doctor, communicating with a patient and perform basic nursing skills at the same time, and managing conflicts between patients. Technology-based communication simulation programs, which reflect various clinical situations, are considered a new alternative that can supplement the limitations of clinical practicum and improve the quality of nursing education.

Computer simulation-based method to predict packing density of aggregates mixture

2018 ◽  
Vol 29 (2) ◽  
pp. 386-398 ◽  
Author(s):  
Mohammad Reisi ◽  
Davood Mostofinejad ◽  
Ali Akbar Ramezanianpour
Keyword(s):  
Computer Simulation ◽  
Packing Density ◽  
Simulation Based

scholarly journals Development of Teaching Materials for Volleyball Games through an PJOK AKTIF Approach (Fun, Character, Measurable, Innovation, and Fit)

2021 ◽  
Vol 5 (1) ◽  
pp. 198-209
Author(s):  
Moh Rufron ◽  
Muhammad Muhyi ◽  
Harwanto Harwanto
Keyword(s):  
Product Development ◽  
Field Test ◽  
Product Development Process ◽  
Design Stage ◽  
Teaching Materials ◽  
Initial Product ◽  
Planning Stage ◽  
Test Stage ◽  
Product Trial ◽  
Class 1

This study aims to determine the level of validity, practicality, and effectiveness of teaching materials for learning PJOK ACTIVE (Fun, Character, Measurable, Innovation, and Fit) at SMP Negeri III Kamal Bangkalan. The benefits of this research are expected to increase students' understanding and students' abilities in PJOK learning practices. This research is a type of development research. There are 10 stages in the product development process starting from the preliminary study stage, planning stage, initial product design stage, field test stage, revision stage, main field test stage, product revision stage, group test stage, final product revision stage, and dissemination stage. The research was conducted at SMPN 3 Kamal Bangkalan from January to May 2021 with a total of 137 students. The data were analyzed using the percentage of the product trial results. The results of the study showed that the results of the product development of teaching materials for ACTIVE PJOK learning for students of SMPN 3 Class 1 in Kamal Bangkalan were declared feasible, very helpful, and could support the implementation of PJOK learning in schools. The results of product development that have been produced can be used as a reference in PJOK learning and besides that it can be developed according to needs.

scholarly journals Investigation of the effect of Hydroxychloroquine, Remdesivir, Oseltamivir and some home remedies in the light of Molecular Dynamics Simulation

2020 ◽  
Author(s):  
Keka Talukdar
Keyword(s):  
Molecular Dynamics ◽  
Clinical Trial ◽  
Computer Simulation ◽  
Molecular Dynamics Simulation ◽  
Human Cell ◽  
Physical Modeling ◽  
Chemical Species ◽  
Dynamics Simulation ◽  
Spike Protein ◽  
Simulation Based

Modeling and simulation is another way of finding the interaction between different drugs and chemical species with human cell. Preliminary studies before clinical trial involve computer simulation based on the physical modeling so that clinical trial can be made easier. In many aspects of drug developing, simulation is an essential tool. Here molecular dynamics simulation is performed for the interaction of the spike protein of Covid-19 virus and some of the recently used drugs. Also, the effect of caffeine, theanine, nicotine etc on the virus is found by simulation

scholarly journals The Effects of Anthropogenic Sound and Artificial Light Exposure on Microbiomes: Ecological and Public Health Implications

2021 ◽  
Author(s):  
Jake M Robinson ◽  
Ross Cameron ◽  
Brenda Parker
Keyword(s):  
Public Health ◽  
Human Health ◽  
Critical Appraisal ◽  
Scientific Literature ◽  
Light Exposure ◽  
Microbial Interactions ◽  
Light Pollution ◽  
Artificial Light ◽  
Future Studies ◽  
Health Implications

Globally, anthropogenic sound and artificial light pollution have increased to alarming levels. Evidence suggests that these can disrupt critical processes that impact ecosystems and human health. However, limited focus has been given to the potential effects of sound and artificial light pollution on microbiomes. Microbial communities are the foundations of our ecosystems. They are essential for human health and provide myriad ecosystem services. Therefore, disruption to microbiomes by anthropogenic sound and artificial light could have important ecological and human health implications. In this mini-review, we provide a critical appraisal of available scientific literature on the effects of anthropogenic sound and light exposure on microorganisms and discuss the potential ecological and human health implications. Our mini-review shows that a limited number of studies have been carried out to investigate the effects of anthropogenic sound and light pollution on microbiomes. However, based on these studies, it is evident that anthropogenic sound and light pollution have the potential to significantly influence ecosystems and human health via microbial interactions. Many of the studies suffered from modest sample sizes, suboptimal experiments designs, and some of the bioinformatics approaches used are now outdated. These factors should be improved in future studies. This is an emerging and severely underexplored area of research that could have important implications for global ecosystems and public health. Finally, we also propose the photo-sonic restoration hypothesis: does restoring natural levels of light and sound help to restore microbiomes and ecosystem stability?

scholarly journals Perceptions, Practices and Principles: Increasing Awareness of ‘Night Sky’ in Urban Landscapes

SURG Journal ◽  
2011 ◽  
Vol 5 (1) ◽  
pp. 54-62
Author(s):  
Robin Mosseri
Keyword(s):  
Literature Review ◽  
Public Perception ◽  
Light Pollution ◽  
Urban Landscapes ◽  
Public Realm ◽  
Artificial Lighting ◽  
Design Considerations ◽  
Planning And Design ◽  
Night Sky ◽  
Natural Cycles

In urban centres the natural cycles of day and night have dramatically been altered by artificial lighting, creating a perpetually lit environment that is rarely considered an issue. Artificial lights are illuminating roadways, structures and public plazas with lighting schemes that are, in most cases, inefficient. Consequently, light pollution has greatly impacted the night by reflecting and refracting light into the atmosphere. Without appropriate consideration of integrating artificial lighting into the urban environment, our “night sky” experience is at risk due to poor approaches to public realm design. This study qualitatively explores light pollution analyzing it based on the environment, society and economy as a whole. A literature review, key informants, and case studies contribute to a greater understanding of light and create a framework to develop a design reference to light efficient urban development. This study examines the need for a shift in public perception, broadening an understanding of the effects of light pollution, and provides design considerations to aid urban night sky awareness, planning and design.

scholarly journals A Systematic Review of Research Investigating the Combined Ecological Impact of Anthropogenic Noise and Artificial Light at Night

2021 ◽  
Vol 9 ◽  
Author(s):  
Wouter Halfwerk ◽  
Paul Jerem
Keyword(s):  
Systematic Review ◽  
Observational Studies ◽  
Ecological Impact ◽  
Experimental Studies ◽  
Ecological Impacts ◽  
Anthropogenic Noise ◽  
Light Pollution ◽  
Artificial Light ◽  
Light At Night ◽  
The Impact

Levels of anthropogenic noise and artificial light at night (ALAN) are rapidly rising on a global scale. Both sensory pollutants are well known to affect animal behavior and physiology, which can lead to substantial ecological impacts. Most studies on noise or light pollution to date have focused on single stressor impacts, studying both pollutants in isolation despite their high spatial and temporal co-occurrence. However, few studies have addressed their combined impact, known as multisensory pollution, with the specific aim to assess whether the interaction between noise and light pollution leads to predictable, additive effects, or less predictable, synergistic or antagonistic effects. We carried out a systematic review of research investigating multisensory pollution and found 28 studies that simultaneously assessed the impact of anthropogenic noise and ALAN on animal function (e.g., behavior, morphology or life-history), physiology (e.g., stress, oxidative, or immune status), or population demography (e.g., abundance or species richness). Only fifteen of these studies specifically tested for possible interactive effects when both sensory pollutants were combined. Four out of eight experimental studies revealed a significant interaction effect, in contrast to only three out seven observational studies. We discuss the benefits and limitations of experimental vs. observational studies addressing multisensory pollution and call for more specific testing of the diverse ways in which noise and light pollution can interact to affect wildlife.

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