Topics Important for the up-to-date Interior Lighting Professional

2020 ◽  
pp. 4-22
Author(s):  
Wout van Bommel
Keyword(s):  
New Technologies ◽  
Biological Effects ◽  
Biological Clock ◽  
Data Communication ◽  
Visible Light Communication ◽  
Well Being ◽  
Detailed Knowledge ◽  
Light Sources ◽  
Led Lighting ◽  
Interior Lighting

To avoid disappointments with LED lighting installations, detailed knowledge of the typical characteristics of the many different solid-state light sources is essential, while already long-available information on vision and colour seeing has to be combined with entirely new fundamental research on the relationship between lighting on the one hand and vision, performance, comfort, health and well-being on the other hand. Lighting has apart from visual effects also far-reaching non-visual biological effects. These effects influence the way our body “operates” and therefore, influence our health, well-being and alertness. Interior lighting installations today have to be designed so that they provide both suitable visual and non-visual biological effects, while adverse effects of lighting, like flicker, blue light hazard and disruption of the biological clock, are avoided. LEDs offer the possibility to use them not only for lighting but also for data transmission. The use of LED lighting as a means for data communication is referred to as “light beyond illumination”. Visible Light Communication (VLC), LiFi, and light itself used as sensor are part of this subject. The modern lighting professional has to get familiarised with these new technologies and applications. The author of this article published in 2019 the book “Interior Lighting, fundamentals, technology and application” with Springer [1]. It discusses in 500 pages all topics important for the up-to-date interior lighting professional. The present overview article is entirely based on this book and follows the same chapter structure. Each chapter also describes, as an example, one or two crucial aspects in more detail.

scholarly journals A 40 Mb/s VLC System Reusing an Existing Large LED Panel in an Indoor Office Environment

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1697
Author(s):  
Xicong Li ◽  
Zabih Ghassemlooy ◽  
Stanislav Zvánovec ◽  
Paul Anthony Haigh
Keyword(s):  
Modulation Depth ◽  
Light Emitting Diode ◽  
Low Cost ◽  
Data Communication ◽  
Experimental System ◽  
Digital Signal ◽  
Visible Light Communication ◽  
Cost Driver ◽  
Limiting Factors ◽  
Light Sources

With advances in solid-state lighting, visible light communication (VLC) has emerged as a promising technology to enhance existing light-emitting diode (LED)-based lighting infrastructure by adding data communication capabilities to the illumination functionality. The last decade has witnessed the evolution of the VLC concept through global standardisation and product launches. Deploying VLC systems typically requires replacing existing light sources with new luminaires that are equipped with data communication functionality. To save the investment, it is clearly desirable to make the most of the existing illumination systems. This paper investigates the feasibility of adding data communication functionality to the existing lighting infrastructure. We do this by designing an experimental system in an indoor environment based on an off-the-shelf LED panel typically used in office environments, with the dimensions of 60 × 60 cm2. With minor modifications, the VLC function is implemented, and all of the modules of the LED panel are fully reused. A data rate of 40 Mb/s is supported at a distance of up to 2 m while using the multi-band carrierless amplitude and phase (CAP) modulation. Two main limiting factors for achieving higher data rates are observed. The first factor is the limited bandwidth of the LED string inside the panel. The second is the flicker due to the residual ripple of the bias current that is generated by the panel’s driver. Flicker is introduced by the low-cost driver, which provides bias currents that fluctuate in the low frequency range (less than several kilohertz). This significantly reduces the transmitter’s modulation depth. Concurrently, the driver can also introduce an effect that is similar to baseline wander at the receiver if the flicker is not completely filtered out. We also proposed a solution based on digital signal processing (DSP) to mitigate the flicker issue at the receiver side and its effectiveness has been confirmed.

DATA COMMUNICATION USING VISIBLE LIGHT

2015 ◽  
Vol 3 (5) ◽  
pp. 358-362
Author(s):  
Tyran Kinny ◽  
Franklin Puthuva ◽  
Ashore Komban ◽  
Dipti Belekar
Keyword(s):  
Visible Light ◽  
Low Cost ◽  
Data Communication ◽  
Visible Spectrum ◽  
Visible Light Communication ◽  
Light Sources ◽  
Human Eye ◽  
Data Rates ◽  
Communication Devices ◽  
Normal Light

Visible Light Communication (VLC) using a Light Fidelity system, as proposed by a German physicist—Harald Haas, provides transmission of data through illumination by sending data through an LED light source that varies in intensity that can be controlled and adjusted such that it appears as normal light to the naked human eye. Here the property of persistence of vision of the human eye is exploited for additional application of a free, sustainable and green source that can be used for wireless communication at very fast data rates. This paper focuses on developing a low cost Li-Fi based system and analyses its performance with respect to existing wireless technology. Wi-Fi is great for general wireless coverage within buildings, whereas Li-Fi is ideal for high density wireless data coverage in confined area and for relieving radio interference issues. Li-Fi based system provides better bandwidth, efficiency, availability and security than Wi-Fi and has already achieved higher data rates. By leveraging the low-cost nature of LEDs and lighting units there are many opportunities to exploit this medium, from public internet access through day-to-day light sources which have their primary purpose of only emitting light. This project envisions a future where data for communication devices will be transmitted through the visible spectrum thus de-clogging the currently overused RF spectrum.

Clinical trials — the personal perspective of the research physician?

2020 ◽  
Vol 75 (3) ◽  
pp. 256-263
Author(s):  
Maria Y. Egorova ◽  
Irina A. Shuvalova ◽  
Olga I. Zvonareva ◽  
Igor D. Pimenov ◽  
Olga S. Kobyakova ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Medical Care ◽  
New Technologies ◽  
Healthcare Providers ◽  
Study Drug ◽  
Well Being ◽  
Personal Perspective ◽  
Public And Private ◽  
Factors Affecting ◽  
To Receive

Background. The organization of clinical trials (CTs) requires the participation and coordination of healthcare providers, patients, public and private parties. Obstacles to the participation of any of these groups pose a risk of lowering the potential for the implementation of CTs. Researchers are a key human resource in conducting of CT. Their motivation for participation can have a significant impact on the recruitment and retention of patients, on the quality of the data collected, which determines the overall outcome of the study. Aims to assess the factors affecting the inclusion of Russian physicians-researchers in CT, and to determine their role in relations with patients-participants. Materials and methods. The study was organized as a part of the Russian multicenter face-to-face study. A survey was conducted of researchers from 10 cities of Russia (20172018). The participation in the survey for doctors was anonymous and voluntary. Results. The study involved 78 respondents. Most research doctors highly value the importance of research for science (4,84 0,39), society (4,67 0,46) and slightly lower for participating patients (4,44 0,61). The expectations of medical researchers are related to improving their financial situation and attaining new experience (n = 14; 18,18%). However, the opportunity to work with new technologies of treatment and diagnosis (n = 41; 52,56%) acted as a motivating factor. According to the questionnaire, the vast majority of research doctors (n = 29; 37,18%) believe that the main reason for patients to participate in CT is to receive quality and free medical care. The most significant obstacle to the inclusion of participants in CT was the side effects of the study drug (n = 38; 48,71%). Conclusions. The potential of clinical researchers in Russia is very high. The patient-participant acts for the research doctor as the subject of the study, and not the object, so the well-being of the patient is not indifferent to the doctor. However, the features of the functioning of our health care system form the motivation of doctors-researchers (additional earnings, professional self-development) and the way they perceive the motivation of patients (CT as an opportunity to receive quality medical care).

scholarly journals 400 - Effects of Computerized Cognitive Training with an Elderly Community Sample

2020 ◽  
Vol 32 (S1) ◽  
pp. 116-116
Author(s):  
M Pires ◽  
A Antunes ◽  
C Gameiro ◽  
C Pombo
Keyword(s):  
Older Adults ◽  
Cognitive Training ◽  
New Technologies ◽  
Community Sample ◽  
Cost Effective ◽  
Well Being ◽  
Control Group ◽  
Depression Symptoms ◽  
Intensive Training ◽  
Before And After

Community-focused programs that promote active and healthy aging can help preserve cognitive capacities, prevent or reverse cognitive deficits. Computer-based cognitive training (CCT) is a promising non-pharmacological, cost -effective and accessible intervention to face the effects of age-related cognitive decline. Previous studies proved CCT to have equal or better efficacy compared to traditional interventions. This comparative multifactorial study aims to test the efficacy of a CCT in a non-randomized community sample of 74 older adults: G1-CCT Experimental group (n=43) (Mean age M=72.21, SD=12.65) and G2- Paper-Pencil Control group (n=31; M=77.94, SD=10.51). Pensioners (97.3%), mostly women (83.8 %) with basic education (51.4%) and without dementia diagnosis, completed a cognitive training program of 17 or 34 group sessions (twice a week). G2 undertook a classic cognitive paper-pencil stimuli tasks. G1, performed, additionally, individual CCT with COGWEB® in a multimodal format (intensive training of attention, calculation, memory, gnosis, praxis, executive functions). Both groups completed Portuguese versions of Mini -Mental State Examination (MMSE),Montreal Cognitive Assessment (MOCA); Geriatric Depressive Scale (GDS); Mini Dependence Assessment (MDA); WHOOQL 5 and Social Support Satisfaction Scale (ESSS) before and after participating in the program. Both groups reported better post-test scores on basic cognitive functions (MMSE, MOCA), Depression symptoms (GDS-30), subjective well-being and quality of life (WHOOQL-5). G1 presented higher MOCA and lower GDS scores before and after CCT, although, group differences become less expressive when interaction effects are considered. Results are in line with findings from past studies, CCT supported by the new technologies, is as a relevant cost-effective therapeutic tool for health professionals working with older adults. Particularly for preventive purposes of neuro-cognitive disorders.

scholarly journals The Effects of Ionising and Non-Ionising Electromagnetic Radiation on Extracellular Matrix Proteins

Cells ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 3041
Author(s):  
Ren Jie Tuieng ◽  
Sarah H. Cartmell ◽  
Cliona C. Kirwan ◽  
Michael J. Sherratt
Keyword(s):  
Extracellular Matrix ◽  
Electromagnetic Radiation ◽  
Cell Biology ◽  
Biological Effects ◽  
Well Being ◽  
Ecm Proteins ◽  
Clinical Consequences ◽  
Radiation Induced ◽  
And Function ◽  
Cellular Components

Exposure to sub-lethal doses of ionising and non-ionising electromagnetic radiation can impact human health and well-being as a consequence of, for example, the side effects of radiotherapy (therapeutic X-ray exposure) and accelerated skin ageing (chronic exposure to ultraviolet radiation: UVR). Whilst attention has focused primarily on the interaction of electromagnetic radiation with cells and cellular components, radiation-induced damage to long-lived extracellular matrix (ECM) proteins has the potential to profoundly affect tissue structure, composition and function. This review focuses on the current understanding of the biological effects of ionising and non-ionising radiation on the ECM of breast stroma and skin dermis, respectively. Although there is some experimental evidence for radiation-induced damage to ECM proteins, compared with the well-characterised impact of radiation exposure on cell biology, the structural, functional, and ultimately clinical consequences of ECM irradiation remain poorly defined.

scholarly journals Frailty and social support: the care services response to aging in Russia

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
E Kholostov
Keyword(s):  
Social Support ◽  
Social Services ◽  
New Technologies ◽  
Effective Interaction ◽  
Well Being ◽  
The Elderly ◽  
The State ◽  
Institutional Perspective ◽  
Term Care ◽  
Health And Social Care

Abstract In the twenty-first century, ageing of population, having become a global phenomenon, raised questions about the need to consider the social services of the elderly from an institutional perspective. Thus, the number of Russians over the age of 100 in 2018 exceeded 15.7 thousand people. In Moscow, as in the mega polis, in 2018 more than 3.4031 million people (27.2%) are older than working age. Different countries have their own characteristics of social service systems, models and policies, it depends to a large extent on the traditions of assistance, sources of financing, the space of responsibility assumed by the State, society, the family and the individual himself. New technologies to be applied for working with the elderly in Russia. Transition to the establishment of a system of long-term care at the level of multidisciplinary cooperation (reform of the residential care system; development of community based services, formation of Social Support Services for 75+, foster family for the elderly).Development of active longevityChanging the role repertoire of an older person (formation of new types of social roles previously characteristic of younger ages; changing of intergenerational link formats, etc.).The growing social responsibility of the State contributes to a more effective interaction between health and social care authorities, as well as a more active involvement of the NGO sector in addressing the problems of older persons.The increase in the number of older persons leads to the creation and active development of a silver economy that contributes to improving the well-being of people.Transfer of retraining and advanced training systems to the competent level according to professional standards (independent assessment of qualifications, personnel diagnostics, formation of individual trajectory of education, training of multiple disciplinary teams).

scholarly journals Environmental noise, its types and effects on health

2021 ◽  
pp. 41-48
Keyword(s):  
New Technologies ◽  
Road Traffic ◽  
Human Life ◽  
Traffic Noise ◽  
Well Being ◽  
Environmental Noise ◽  
Road Traffic Noise ◽  
Negative Effects ◽  
Railway Traffic ◽  
The Impact

Noise can be defined as an undesirable sound that pollutes the environment. If noise is continuous and exceeds certain levels, negative effects on health can be observed. In recent years, the impact of environmental noise (road traffic noise, railway traffic noise, air traffic noise and industrial noise) on human health has come under increasingly intense scrutiny. Noise can cause a number of negative effects on health that directly or indirectly affect humans. The occurrence of some certain and harmful health effects drives the onset of others and may contribute to the development of various diseases. Health is not only a state of physical well-being, but also mental well-being. Mental health primarily depends on the quality of life, which can be affected by various environmental factors, such as noise. An important aspect of fighting noise is the most effective protection of the population by avoiding sources of noise and reducing it. This can be achieved by introducing new technical solutions and new technologies, including devices that generate less noise. Another important measure is educating the society and influencing the change of individual and collective behavior, which may contribute to reducing the harmful factor, which is noise in human life, and minimize the resulting negative effects on health.

scholarly journals How Rating Systems Support Regenerative Change in the Built Environment

2021 ◽  
pp. 131-144
Author(s):  
Melinda Orova ◽  
András Reith
Keyword(s):  
Built Environment ◽  
New Technologies ◽  
Negative Impact ◽  
Positive Impact ◽  
Well Being ◽  
Assessment Tools ◽  
Extensive Literature ◽  
Main Question ◽  
Rating Systems ◽  
Living Building Challenge

AbstractUrban development principles have evolved from sustainability, where the focus was on limiting the negative impact of urban environment, to restorative and regenerative sustainability, where positive impact is needed on global social and ecological systems. This recent paradigm shift requires the development of new tools for practitioners, like design methodologies, new technologies, and assessment methods.To measure the impact of sustainability on the built environment, several building-scale assessment tools exist. The question is how these widespread rating systems support restorative change in the built environment.The main question of the research is answered in three methodological steps. First, the goals of restorative sustainability are summarized from the available extensive literature, including the topics of Place, Energy, Water, Well-being, Carbon, Resources, Equity, Education, and Economics. Then different rating tools (Living Building Challenge, WELL, LEED, BREEAM, DGNB) are analysed how the considered issues and indicators in these rating tools are connected to restorative goals. Then these indicators are assessed how they serve that goal.The result of this study shows the main strengths and gaps in current wide-spread international rating tools regarding their support of restorative sustainability.

scholarly journals NOSOGENIC DEPRESSION IN PATIENTS WITH PATHOLOGY OF THE MUCOUS ORAL CAVITY

2020 ◽  
Vol 15 (4) ◽  
pp. 50-54 ◽  
Author(s):  
Karen Karakov ◽  
Tatyana Vlasova ◽  
Artur Oganyan ◽  
Araksia Khachaturyan ◽  
Svetlana Karakova ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Oral Cavity ◽  
Treatment Regimen ◽  
Oral Mucosa ◽  
New Technologies ◽  
Well Being ◽  
Diagnostic Methods ◽  
Control Group ◽  
Traditional Treatment ◽  
And Control

Importance. Despite the improvement of diagnostic methods and the introduction of new technologies in the treatment of pathology of the oral mucosa, it is difficult to achieve stable remission, since 70 % of cases are based on somatic and bodily suffering factors. The article presents data from a comparative analysis of the use of the traditional treatment regimen for patients with pathology of the oral cavity and the inclusion of the latest generation of antipsychotics in the treatment regimen. It was established that, when applied, a tendency towards normalization of psychological and autonomic status was observed. The inclusion of anxiolytics and antioxidants in the complex of general therapy for patients with pathology of the oral mucosa contributed to a more pronounced positive dynamics of achieving and prolonging the phase of remission. Objectives — to evaluate the effectiveness of introducing drugs of the latest generation of antipsychotics into the traditional treatment regimen for patients with pathology of the oral cavity. Methodology. Under our supervision, there were 30 patients aged 40 to 60 years with a diagnosis of pathology of the oral mucosa and pathology of the periodontium. All examined were divided into 2 groups: the main (15 people) and control (15 people). Results. Clinical well-being, manifested in a subjective decrease in pain in the tongue, feelings of rawness, tingling, numbness, awkwardness, in the tongue, was noted already at the 5th visit in 67 % of patients of the main group, while in the control group in 17 % of patients. Conclusions. The inclusion of anxiolytics and antioxidants in the complex of general therapy for patients with pathology of the oral mucosa contributed to a more pronounced positive dynamics of achieving and prolonging the phase of remission. Our data allow us to implement this treatment regimen in practical healthcare.

scholarly journals The Effect of 5-hydroxytryptamine on Smooth Muscles is Impacted by Broadband UV and LED UV and Blue Light

2021 ◽  
Vol 25 (4) ◽  
pp. 331-342
Author(s):  
Charilaos Xenodochidis ◽  
◽  
Milena Draganova-Filipova ◽  
George Miloshev ◽  
Milena Georgieva ◽  
...  
Keyword(s):  
Smooth Muscle ◽  
Molecular Mechanisms ◽  
Biological Effects ◽  
Smooth Muscles ◽  
Light Sources ◽  
Organ Bath ◽  
Light Emitting ◽  
Signaling Systems ◽  
Positive Effects ◽  
Lamp Source

Due to their effects, similar to low-intensity therapy light sources such as light-emitting diodes (LED) and broadband spectrum lamps have recently become commonly used in the diagnosis and treatment of neurodegenerative pathologies, cancer, as well as ageing. Despite the proven positive effects of such therapies, deeper understanding of the light therapies’ biological effects remains unclear. Even more, the molecular mechanisms through which different neurotransmitters, namely serotonin (5-hydroxytryptamine, 5-HT), mediate the organism’s response to radiation are yet indistinct. In this paper, we present the design and development of a specialized system for irradiation of biological objects, which is composed of LED 365 nm and LED 470 nm and a broadband lamp source of UVA/B (350 nm) with intensity, power density and direction, which can be optimized experimentally. The system, named a “water organ bath (wob)”, is used in the current work to irradiate smooth muscle stomach strips of rats. The obtained results prove that the modulation of the spontaneous contractile smooth muscle activity and the potentiation of the effects of major neurotransmitters are executed by the emitted light. The probable explanation for the neurotransmitters photoactivation is that it is the resultant effect of electromagnetic radiation on intracellular enzymes signaling systems.

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