scholarly journals Personalized Office Lighting for Circadian Health and Improved Sleep

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4569 ◽  
Author(s):  
Charikleia Papatsimpa ◽  
Jean-Paul Linnartz
Keyword(s):  
Time Window ◽  
Light Exposure ◽  
Mathematical Optimization ◽  
Modern Society ◽  
Well Being ◽  
Daily Activities ◽  
Circadian Pacemaker ◽  
Light Levels ◽  
Office Lighting ◽  
The Impact

In modern society, the average person spends more than 90% of their time indoors. However, despite the growing scientific understanding of the impact of light on biological mechanisms, the existing light in the built environment is designed predominantly to meet visual performance requirements only. Lighting can also be exploited as a means to improve occupant health and well-being through the circadian functions that regulate sleep, mood, and alertness. The benefits of well-lit spaces map across other regularly occupied building types, such as residences and schools, as well as patient rooms in healthcare and assisted-living facilities. Presently, Human Centric Lighting is being offered based on generic insights on population average experiences. In this paper, we suggest a personalized bio-adaptive office lighting system, controlled to emit a lighting recipe tailored to the individual employee. We introduce a new mathematical optimization for lighting schedules that align the 24-h circadian cycle. Our algorithm estimates and optimizes parameters in experimentally validated models of the human circadian pacemaker. Moreover, it constrains deviations from the light levels desired and needed to perform daily activities. We further translate these into general principles for circadian lighting. We use experimentally validated models of the human circadian pacemaker to introduce a new algorithm to mathematically optimize lighting schedules to achieve circadian alignment to the 24-h cycle, with constrained deviations from the light levels desired for daily activities. Our suggested optimization algorithm was able to translate our findings into general principles for circadian lighting. In particular, our simulation results reveal: (1) how energy constrains drive the shape of optimal lighting profiles by dimming the light levels in the time window that light is less biologically effective; (2) how inter-individual variations in the characteristic internal duration of the day shift the timing of optimal lighting exposure; (3) how user habits and, in particular, late-evening light exposure result in differentiation in late afternoon office lighting.

scholarly journals A conceptual simulation workflow to guide design decisions regarding the effects of daylight on occupants’ alertness

2021 ◽  
Vol 2042 (1) ◽  
pp. 012116
Author(s):  
Pierson Clotilde ◽  
Soto Magán Victoria Eugenia ◽  
Aarts Mariëlle ◽  
Andersen Marilyne
Keyword(s):  
Light Exposure ◽  
Well Being ◽  
Research Field ◽  
Decision Makers ◽  
Spectral Simulation ◽  
Design Decisions ◽  
Computational Tools ◽  
Recent Developments ◽  
The Impact

Abstract Recent developments in the lighting research field have demonstrated the importance of a proper exposure to light to mediate several of our behavioral and physiological responses. However, we spend nowadays around 90% of our time indoors with an often quite limited access to bright daylight. To be able to anticipate how much the built environment actually influences our light exposure, and how much it may ultimately impact our health, well-being, and productivity, new computational tools are needed. In this paper, we present a first attempt at a simulation workflow that integrates a spectral simulation tool with a light-driven prediction model of alertness. The goal is to optimize the effects of light on building occupants, by informing the decision makers about the impact of different design choices. The workflow is applied to a case study to provide an example of what learnings can be expected from it.

scholarly journals Light Exposure during Days with Night, Outdoor, and Indoor Work

2019 ◽  
Vol 63 (6) ◽  
pp. 651-665 ◽  
Author(s):  
Stine Daugaard ◽  
Jakob Markvart ◽  
Jens Peter Bonde ◽  
Jens Christoffersen ◽  
Anne Helene Garde ◽  
...  
Keyword(s):  
Light Intensity ◽  
Light Exposure ◽  
Spectral Composition ◽  
Working Hours ◽  
Well Being ◽  
Outdoor Workers ◽  
Light Levels ◽  
Light Intensities ◽  
Treatment Of Depression ◽  
Night Shifts

Abstract Objective To assess light exposure during days with indoor, outdoor, and night work and days off work. Methods Light intensity was continuously recorded for 7 days across the year among indoor (n = 170), outdoor (n = 151), and night workers (n = 188) in Denmark (55–56°N) equipped with a personal light recorder. White light intensity, duration above 80, 1000, and 2500 lux, and proportion of red, green, and blue light was depicted by time of the day and season for work days and days off work. Results Indoor workers’ average light exposure only intermittently exceeded 1000 lux during daytime working hours in summer and never in winter. During daytime working hours, most outdoor workers exceeded 2500 lux in summer and 1000 lux in winter. Night workers spent on average 10–50 min >80 lux when working night shifts. During days off work, indoor and night workers were exposed to higher light intensities than during work days and few differences were seen between indoor, outdoor, and night workers. The spectral composition of light was similar for indoor, outdoor, and night workers during days at and off work. Conclusion The night workers of this study were during night hours on average exposed for a limited time to light intensities expected to suppress melatonin. The indoor workers were exposed to light levels during daylight hours that may reduce general well-being and mood, especially in winter. Outdoor workers were during summer daylight hours exposed to light levels comparable to those used for the treatment of depression.

scholarly journals The Impact of the Internet on Social & Psychological Well-Being of School Going Children

2016 ◽  
Vol 3 (3) ◽  
Author(s):  
Deepak Sharma ◽  
Prof. D D Aggarwal ◽  
Anju Joshi Sharma
Keyword(s):  
Internet Use ◽  
Well Being ◽  
Physical Activities ◽  
Daily Activities ◽  
Net Generation ◽  
The Internet ◽  
Social Psychological ◽  
Displacement Effect ◽  
Daily Lives ◽  
The Impact

This study investigated the children’s Internet use behaviour and how the Internet usage changes children’s daily lives. 50 children in 9th to12th Class participated in survey. Particularly, this study examined how children allocated their time to different media and daily activities and the relationship between children’s Internet use and level of physical activities, social involvement and relationship, and loneliness. This study found no displacement effect of the Internet on children’s daily activities. Rather, it was found that children who spend more time on the Internet were more likely to spend more time with other media, more time on some kind of physical activities, and were more socially involved. The Internet provided a place for communication and social relationships for children. Net-generation children surrounded by media were not necessarily giving up other activities that were also important for their intellectual, physical, social and psychological development.

scholarly journals Application of green tools in green marketing

2021 ◽  
Vol 6 (1) ◽  
pp. 72-77
Author(s):  
Veljko Ćalasan ◽  
Rade Slavković ◽  
Jelena Rajković
Keyword(s):  
Life Cycle ◽  
Carbon Emissions ◽  
Lean Manufacturing ◽  
Social Care ◽  
Well Being ◽  
Green Marketing ◽  
Daily Activities ◽  
Life Cycle Thinking ◽  
The Impact ◽  
Strategic Goal

Green marketing is a promotion of "green" or environmentally friendly products as a consumer base for the premium product. It implies the whole chain of a product's life cycle, prevention of releasing pollutants into the environment and their removal using phytoremediation as one of many tools. Increasing social care linked health well-being with sustainable environmental and economy. Therefore, increased number of eco-minded entrepreneurs includes green marketing. A strategic goal of corporations is to raise awareness through environmentally minded publication, eco-friendly retail, organic catering/promotion, eco-friendly landscaping, eco-consulting, etc. Thus, green tools, part of green marketing promote and educate about carbon emissions and pollution consumers daily activities produce and the impact those activities have on the final product. In the context of the changes in business, green marketing could be put in the framework of life cycle thinking. Taking into account waste as a final by product even in a lean manufacturing, LCA includes unavoidable pollutants or products as well as the remediation/phytoremediation to decrease harmful product impact.

scholarly journals Predisposition to Change Is Linked to Job Satisfaction: Assessing the Mediation Roles of Workplace Relation Civility and Insight

2020 ◽  
Vol 17 (6) ◽  
pp. 2141 ◽  
Author(s):  
Alessio Gori ◽  
Eleonora Topino
Keyword(s):  
Job Satisfaction ◽  
Psychological Factors ◽  
Modern Society ◽  
Well Being ◽  
The Other ◽  
Relevant Role ◽  
The Impact ◽  
The Relationship ◽  
Positive Results

The globalization processes typical of liquid modern society require organizations to have high levels of flexibility, dynamism, and rapidity of change, testing the adaptability of workers with possible repercussions on well-being and productivity. Therefore, this study aimed to investigate the role of several psychological factors in favoring job satisfaction in a group of organizational workers (mean age = 46.24; SD = 9.99; 40.9% males and 59.1% females). Firstly, the impact of predisposition to change on job satisfaction through workplace relational civility (others with me) or insight orientation as independent mediating variables was analyzed. After that, this relationship was also studied by testing the effect that the simultaneous interaction of both mediators could have. Results show that workplace relational civility (others with me) significantly mediated the relationship between predisposition to change and job satisfaction, while no significance was found in the effect of insight when considered individually. However, the latter acquires greater relevance if placed in interaction with the other mediator, that is found to be the most proximal factor linking job satisfaction to the other more distal variables. Such findings might have a relevant role in strengthening preventive intervening, favoring positive results for greater well-being of both subjects and organizations.

scholarly journals Development of a novel patient-reported measure for acromegaly: the Acro-TSQ

Pituitary ◽  
2019 ◽  
Vol 22 (6) ◽  
pp. 581-593 ◽  
Author(s):  
Maria Fleseriu ◽  
Leon Fogelfeld ◽  
Murray B. Gordon ◽  
Jill Sisco ◽  
Hilary H. Colwell ◽  
...  
Keyword(s):  
Side Effects ◽  
Disease Burden ◽  
Symptom Control ◽  
Somatostatin Analogs ◽  
Well Being ◽  
The United States ◽  
Daily Activities ◽  
Response Options ◽  
Patient Reported ◽  
The Impact

Abstract Purpose Somatostatin analogs (SSAs) represent a mainstay of medical treatment for acromegaly, currently available as either intramuscular or deep subcutaneous injections. Patient-reported outcomes (PROs) are increasingly common as relevant outcomes in studies of acromegaly and its treatment, but there are no validated PRO measures available that focus on the disease burden and the impact of treatment, specifically designed for use in patients with acromegaly. We sought to develop a new and unique PRO measure, the Acromegaly Treatment Satisfaction Questionnaire (Acro-TSQ). Methods Concept elicitation (CE) interviews were conducted with acromegaly patients in the United States receiving SSA injections at a stable dose for ≥ 6 months. A questionnaire was drafted based on these interviews; combined CE and cognitive debriefing (CE/CD) interviews were then conducted to confirm the content, clarity, and relevance of the questionnaire. Results Nineteen subjects completed interviews [n = 9 CE, n = 10 CE/CD; n = 15 Lanreotide Depot/Autogel (Somatuline), n = 4 Octreotide LAR (Sandostatin LAR)]. Most subjects responded positively when asked about the effectiveness of their current treatment; however, breakthrough symptoms, injection site reactions, and side effects were commonly reported and had negative impacts on social and emotional well-being and daily activities. All 10 subjects involved in debriefing interviews found the questionnaire to be relevant, easy to complete, and found the response options to be clear. The resulting 26-item Acro-TSQ covers symptoms and symptom control, gastrointestinal side effects and their impact on daily activities, the emotional impact of treatment, convenience and ease of use, and overall satisfaction. Conclusions The Acro-TSQ is a novel PRO, focused on both disease burden and impact of treatment; it was found to be comprehensive, clear, and relevant for patients with acromegaly receiving injectable SSA treatment.

Luminous Exposures and Light-Fastness Survey in Daylit Historical Museum Galleries under Tropical Sky Conditions

2012 ◽  
Vol 488-489 ◽  
pp. 1547-1552 ◽  
Author(s):  
Noraini Ahmad ◽  
Sabarinah Sh Ahmad ◽  
Anuar Talib
Keyword(s):  
Light Exposure ◽  
Light Fastness ◽  
Preventive Conservation ◽  
Light Levels ◽  
Data Loggers ◽  
Architectural Features ◽  
Colour Changes ◽  
Sky Conditions ◽  
The Impact ◽  
Exposure Measurements

This paper highlights the results of light levels and light-fastness study conducted in four daylit historical museum galleries in Malaysia. These museums architectural features allow sun radiation into the building, causing light exposure damage to artifacts. This study aims to evaluate the luminous exposures and light-fastness as an initial preventive conservation measure in daylit historical museum galleries under the tropical sky conditions. Light sensors with data-loggers and Light-fastness dosimeters were installed throughout the museums to take cumulative light exposure measurements during museum opening hours. Both instrumentations were tested in the field during different campaigns exposures. After exposures between 90 and 100 days, these dosimeters showed photo-induced colour changes which translated exposures into equivalent luminous exposure and estimated annual exposures (Lux hours) which were used to validate the measured values of illuminance data. Simulated light dosimeters and measured illuminance data show good correlation. Thus, equivalent light dosimeter makes sense to assess the impact of light distributions.

scholarly journals Effect of Multiple Sclerosis on Daily Activities, Emotional Well-being, and Relationships

2019 ◽  
Vol 22 (4) ◽  
pp. 158-164
Author(s):  
Ann D. Bass ◽  
Bart Van Wijmeersch ◽  
Lori Mayer ◽  
Mathias Mäurer ◽  
Aaron Boster ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Online Survey ◽  
Well Being ◽  
The United States ◽  
Muscle Stiffness ◽  
Daily Activities ◽  
Cold Sensitivity ◽  
Negative Effects ◽  
Negative Effect ◽  
The Impact

Abstract Background: The vsMS survey was conducted to better understand the negative effects of fatigue, cognitive impairment, emotional burden, and decreased physical functioning on the personal, professional, and social lives of individuals with multiple sclerosis (MS). Methods: The vsMS survey was an online survey conducted in Australia, Canada, France, Italy, Spain, the United Kingdom, and the United States that assessed the impact of MS on individuals’ daily activities, emotional well-being, relationships, and employment. Results: The survey included 1075 participants with relapsing-remitting MS. Almost 42% of participants reported that their ability to perform and manage daily activities had worsened during the previous 2 years. More than 50% reported limitations in daily activities due to fatigue, physical weakness, problems with balance/coordination, heat/cold sensitivity, memory problems, numbness/tingling, trouble concentrating, impaired movement/muscle stiffness, and impaired sleeping. Participants also reported a negative effect on emotional and social factors, including self-esteem, general outlook, well-being, maintaining/starting relationships, ability to progress in their career/keep their job, and ability to cope with life roles. Conclusions: These data highlight the importance of addressing the impact of MS and the social and emotional disease burdens on daily activities when planning the care of patients with MS.

3. Learning Modules in a Support Group Context for Caregivers of Individuals with Alzheimer’s Disease and Related Dementias

2017 ◽  
Author(s):  
Wafa Nurdin ◽  
Aicha Wane
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Support Groups ◽  
Support Group ◽  
Well Being ◽  
Community Dwelling ◽  
Daily Activities ◽  
Caregiver Support ◽  
Learning Modules ◽  
The Impact

The majority of community dwelling individuals with dementia have informal caregivers. With the risk of developing care related stress, it is important for community agencies, like the Alzheimer Society of Kingston (ASK), to provide support, resources, and information. The goal of this intervention was that caregivers of individuals with Alzheimer’s disease and related dementias (ADRD) would improve physical, social, and mental well-being. A search of the literature, as well as surveys of support group facilitators, forty caregivers, and consultation with ASK helped determine information relevant to the caregivers. The purpose of this project was to develop learning modules on: a) using a problem-based strategy to assist with daily activities of the person they are caring for; b) self-care strategies; c) positive coping strategies; d) assertive communication skills, and e) home environment safety to be delivered during caregiver support groups. The module on a problem-based strategy to assist with daily activities was pilot tested, utilizing five caregivers. It was found that the learning module was approximately 30 minutes over the stated timeframe and the case study component of the module was ineffective. Recommendations include implementing the module as two parts. Furthermore, additional research is needed on the impact of the modules on caregiver stress and burden.

Neighbourhood social trust and youth perceptions of safety during daily activities

2017 ◽  
Vol 24 (6) ◽  
pp. 445-447
Author(s):  
Kalen Flynn ◽  
Therese S Richmond ◽  
Charles C Branas ◽  
Douglas J Wiebe
Keyword(s):  
Social Trust ◽  
Well Being ◽  
Daily Activities ◽  
Sample Survey ◽  
Point Scale ◽  
Complex Interplay ◽  
Perceived Safety ◽  
Youth Perceptions ◽  
Perceptions Of Safety ◽  
The Impact

Exposure to adverse neighbourhood conditions can negatively impact adolescent well-being and perceived safety. However, the impact of neighbourhood social trust on perceived safety is largely unknown. We studied 139 adolescent men to investigate how their perceptions of safety varied as a function of social trust levels in the neighbourhoods they traversed; neighbourhoods that were not necessarily their own. Adolescents mapped their minute-by-minute activities over a recent day and rated their perceived safety on a 10-point scale during in-person interviews. Neighbourhood social trust was measured via a citywide random sample survey. Mixed effects regression showed that, compared with their safety perceptions when in areas of low social trust, older adolescents were 73% more likely to feel unsafe when in areas of medium social trust, and 89% more likely to feel unsafe when in areas of high social trust. Inverse relationships between neighbourhood social trust and adolescents’ perceived safety highlight the complex interplay between youth, environmental contexts and safety.

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