The relative velocity between objects with finite velocity affects the reaction
between them. This effect is known as general Doppler effect. The Laser Interferometer
Gravitational-Wave Observatory (LIGO) discovered gravitational waves and found their
speed to be equal to the speed of light c. Gr...
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The relative velocity between objects with finite velocity affects the reaction
between them. This effect is known as general Doppler effect. The Laser Interferometer
Gravitational-Wave Observatory (LIGO) discovered gravitational waves and found their
speed to be equal to the speed of light c. Gravitational waves are generated following
a disturbance in the gravitational field; they affect the gravitational force on an object.
Just as light waves are subject to the Doppler effect, so are gravitational waves. This
article explores the following research questions concerning gravitational waves: Is there
a linear relationship between gravity and velocity? Can the speed of a gravitational wave
represent the speed of the gravitational field (the speed of the action of the gravitational
field upon the object)? What is the speed of the gravitational field? What is the spatial
distribution of gravitational waves? Do gravitational waves caused by the revolution of
the Sun affect planetary precession? Can we modify Newton’s gravitational equation
through the influence of gravitational waves?
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Posted 1 year ago
Jacques Curely
Jacques Curely
Institution: Laboratoire Ondes et Matière d’Aquitaine, UMR 5798, University of Bordeaux,
Email: Jacques.curely@u-bordeaux.fr
:In earlier work, we previously established a formalism that allows to express the exchange
energy J vs. fundamental molecular integrals without crystal field, for a fragment A–X–B, where
A and B are 3d 1 ions and X is a closed-shell diamagnetic ligand. In this article, we recall this
formali...
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:In earlier work, we previously established a formalism that allows to express the exchange
energy J vs. fundamental molecular integrals without crystal field, for a fragment A–X–B, where
A and B are 3d 1 ions and X is a closed-shell diamagnetic ligand. In this article, we recall this
formalism and give a physical interpretation: we may rigorously predict the ferromagnetic (J < 0)
or antiferromagnetic (J > 0) character of the isotropic (Heisenberg) spin-spin exchange coupling.
We generalize our results to ndm ions (3 ≤ n ≤ 5, 1 ≤ m ≤ 10). By introducing a crystal field we
show that, starting from an isotropic (Heisenberg) exchange coupling when there is no crystal field,
the appearance of a crystal field induces an anisotropy of exchange coupling, thus leading to a z-z
(Ising-like) coupling or a x-y one. Finally, we discuss the effects of a weak crystal field magnitude
(3d ions) compared to a stronger (4d ions) and even stronger one (5d ions). In the last step, we are
then able to write the corresponding Hamiltonian exchange as a spin-spin one.
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Posted 1 year ago
Slawomira Hajduk
Slawomira Hajduk
Institution: Faculty of Engineering Management, Bialystok University of Technology,
Email: s.hajduk@pb.edu.pl
The effects of urban transport are highly concerning. The rapid urbanization and motorization in smart cities have a huge impact on sustainability. The goal of the paper is to analyse the smart
cities selected, in terms of the urban transport. This paper presents an overview of research works
pub...
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The effects of urban transport are highly concerning. The rapid urbanization and motorization in smart cities have a huge impact on sustainability. The goal of the paper is to analyse the smart
cities selected, in terms of the urban transport. This paper presents an overview of research works
published between 1991 and 2020 concerning urban transport and MCDM (multi-criteria decision
making). The author highlights the importance of decision-making criteria and their weight, as well as
techniques. Seven criteria and forty-four objects were used as the input of the approach. The entropy
weight method was used to compute the weight of each criterion. The TOPSIS (Technique for Order
Performance by Similarity to Ideal Solution) was applied to calculate the assessment and ranking of
transport performance for each smart city. Portland was found to be the best location for transport
enterprises and projects; Tbilisi was ranked last. The values of the relative closeness coefficient ranged
from 0.03504 to 0.921402. Finally, some suggestions for future research are discussed.
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Posted 1 year ago
Saman Hazany,
Saman Hazany
Institution: Keck School of Medicine of USC Radiology Department, Neuroradiology Division,
Email: samanh26@gmail.com
Brittany DeClouette
Brittany DeClouette
Institution: Keck School of Medicine of USC
Email: samanh26@gmail.com
In patients with Medial Temporal Lobe Epilepsy (MTLE), more severe impairment in the ipsilateral than
the contralateral hemisphere white matter tracts, including Superior Longitudinal Fasciculus (SLF), are
demonstrated on diffusion tensor imaging (DTI). Many clinicians and researchers conclude tha...
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In patients with Medial Temporal Lobe Epilepsy (MTLE), more severe impairment in the ipsilateral than
the contralateral hemisphere white matter tracts, including Superior Longitudinal Fasciculus (SLF), are
demonstrated on diffusion tensor imaging (DTI). Many clinicians and researchers conclude that drawing
regions of interest (ROI) in the white matter can demonstrate these asymmetries. In this study we
demonstrate that fractional anisotropy (FA) values derived from manually drawing ROI’s on diffusion
tensor imaging (DTI) of SLF differ between the side of seizure onset compared to the contralateral side
in each individual patient with MTLE does not demonstrate these previous conclusions. We therefore
believe that clinicians should recognize that this method of measurement can be inaccurate and should
not be interpreted independently
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Posted 1 year ago
Phuong Le Dang,
Phuong Le Dang
Institution: iversity Medical Center at Ho Chi Minh City, 215 Hong Bang Street, Ward 11, District 5, Ho Chi Minh City, Viet Nam
Email: phuong.dl@umc.edu.vn
Anh Minh Nguyen
Anh Minh Nguyen
Institution: iversity Medical Center at Ho Chi Minh City, 215 Hong Bang Street, Ward 11, District 5, Ho Chi Minh City, Viet Nam
Email: anh.nm@umc.edu.vn
Introduction: Interlaminar Endoscopic Lumbar Disckectomy has been found to offer symptomatic alleviation
comparable to open disckectomy while reducing blood loss, postoperative discomfort, complications, hospital
stay, and narcotic use. General anesthesia decreases intraoperative stress, but surge...
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Introduction: Interlaminar Endoscopic Lumbar Disckectomy has been found to offer symptomatic alleviation
comparable to open disckectomy while reducing blood loss, postoperative discomfort, complications, hospital
stay, and narcotic use. General anesthesia decreases intraoperative stress, but surgeons may not be sure whether
they injure nerve roots. Free-run electromyography may protect nerve roots that are thought to be in danger from
surgery.
Methods: Patients with L4L5 or L5S1 lumbar disc herniation were treated with IELD. EMG was monitored via
needle electrodes in lateral vastus lateralis, anterior tibialis, abductor hallucis muscles. Surgeons were asked to
halt the surgery and adjust their manipulation right when abnormal EMG appeared on the screen. The severity of
signs and symptoms were noted pre- and post-operatively.
Results: In all 26 cases, the median of visual analogue scale (VAS) of low back pain was 4.5. That of radicular pain
was 7. Two patients had motor weakness at L4 or S1 muscles. One patient has sensory loss at L5 dermatome. The
level of disc herniation was 46% at L4L5 and 56% at L5S1. The complications included only superficial infection
in two patients that were effectively managed with antibiotics. During postoperative follow-up, all patients
recovered completely without any neurological deficit. f-EMG signal included uneventful (9 patients), burst/
spike (10 patients), A-train (3 patients, and C-train (4 patients)
Conclusion: Free-run EMG is a protective mean in IELD. All surgeons will profit from this technique in the early
stages of their learning curve. To examine the outcomes, further comparative research and prospective, ran-
domized, controlled trials should be undertaken.
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Posted 1 year ago
Pooja Kherwa,
Pooja Kherwa
Institution: Maharaja Surajmal Institute of Technology,
Email: info@res00.com
Poonam Bansal
Poonam Bansal
Institution: Maharaja Surajmal Institute of Technology,
Email: info@res00.com
The COVID-19 pandemic is the deadliest outbreak in our living memory. So, it is the need of hour
to prepare the world with strategies to prevent and control the impact of the pandemic. In this paper,
a novel semantic pattern detection approach in the COVID-19 literature using contextual clusteri...
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The COVID-19 pandemic is the deadliest outbreak in our living memory. So, it is the need of hour
to prepare the world with strategies to prevent and control the impact of the pandemic. In this paper,
a novel semantic pattern detection approach in the COVID-19 literature using contextual clustering
and intelligent topic modeling is presented. For contextual clustering, three level weights at term level,
document level, and corpus level are used with latent semantic analysis. For intelligent topic modeling,
semantic collocations using pointwise mutual information (PMI), and log frequency biased mutual
dependency (LBMD) are selected, and latent dirichlet allocation is applied. Contextual clustering
with latent semantic analysis presents semantic spaces with high correlation in terms at corpus level.
Through intelligent topic modeling, topics are improved in the form of lower perplexity and highly
coherent. This research helps in finding the knowledge gap in the area of COVID-19 research and
offered direction for future research.
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Posted 1 year ago
Mohammed Mikidadu
Mohammed Mikidadu
Institution: Department of Economics & Business Administration, Austin College,
Email: mmohammed@austincollege.edu
Objectives: The study investigated the relationship between electricity access and infant mortality at the sub-
national level in Ghana, controlling for correlates such as birth interval, children living with both parents,
women’s education, and income distribution.
Methods: The study employed ...
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Objectives: The study investigated the relationship between electricity access and infant mortality at the sub-
national level in Ghana, controlling for correlates such as birth interval, children living with both parents,
women’s education, and income distribution.
Methods: The study employed a pooled cross‐section regression approach using data from the Ghana
Demographic and Health Survey (GDHS) for 10 administrative regions from 1993 to 2014. The GDHS is a
detailed data set that provides comprehensive information on households and their socio‐economic and demo-
graphic characteristics in Ghana.
Results: The results show that in regions with low incidence of infant mortality, a 10% improvement in elec-
tricity access reduces infant death by 11.8 per 1,000 live births, whereas in high mortality regions, improve-
ment in electricity access has no impact on infant death. Birth interval reduces the risk of infant death in
low mortality regions but not in high mortality regions. Children living with both parents have a high proba-
bility of survivorship in high mortality regions. Women’s median years of education lowers the likelihood of
infant death in high mortality regions but increases the likelihood in low mortality regions. Wealth distribution
is inconsequential for infant death in low mortality regions, but in high mortality regions, both the wealthiest
and the poorest experienced significant decline in infant death.
Conclusions: The findings underscore the fruitfulness of investigating the effects of electricity access and other
correlates on infant mortality at the subnational level. The study recommends that the provision of reliable
access to electricity is needed to improve infant mortality rates. However, policies that seek to improve access
to reliable electricity should be implemented together with health infrastructure development policies, espe-
cially in the regions with high infant mortality rates, for electricity access to have the desired effect
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Posted 1 year ago
Grace Brannon,
Grace Brannon
Institution: enure-Track, Department of Communication, College of Liberal Arts, University of Texas at Arlington,
Email: grace.brannon@uta.edu
Sophia Mitchell,
Sophia Mitchell
Institution: Department of Communication, College of Liberal Arts, University of Texas at Arlington,
Email: sxm0652@mavs.uta.edu
Yue Liao
Yue Liao
Institution: Tenure-Track, Department of Kinesiology, College of Nursing and Health Innovation, University of Texas at Arlington, 5
Email: yue.liao@uta.edu
Objective: Mobile and wearable sensor technology is increasingly common and accessible. The aim of this study was to
explore individuals' perceptions and acceptability of mobile and wearable sensors, as well as concerns.
Methods: Purposive sampling was used to recruit non-patient adults (n = 22) a...
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Objective: Mobile and wearable sensor technology is increasingly common and accessible. The aim of this study was to
explore individuals' perceptions and acceptability of mobile and wearable sensors, as well as concerns.
Methods: Purposive sampling was used to recruit non-patient adults (n = 22) and cancer survivors (n = 17) for face-to-
face and virtual small-group interviews. Reflexive thematic analysis of the data focused on privacy concerns.
Results: Participants reported that privacy was generally not a concern for sensor adoptions for physical activity health
interventions except for health insurer access.
Conclusion: The patient perspectives as reported in the findings illustrate the need for transparency between potential
adopters and users of mobile and wearable devices and health care practitioners, as well as secure privacy policies for
health insurers.
Innovation: Older adults often are perceived as unwilling to adopt mHealth technologies for many reasons, including
privacy concerns. This study examined an important patient population, cancer survivors, who are often overlooked
yet may benefit from targeted health interventions using mHealth technologies, and compared their responses with
a non-patient population for prevention purposes. Our findings suggest that one's lived health experiences (cancer sur-
vivorship) are more influential than one's age in adopting mHealth technologies
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Posted 1 year ago
Lucy Walker,
Lucy Walker
Institution: Department of Psychology, Manchester Metropolitan University,
Email: lucy.walker@mmu.ac.uk
Sarah Grogan,
Sarah Grogan
Institution: Department of Psychology, Manchester Metropolitan University,
Email: s.grogan@mmu.ac.uk
Keira Sholtens,
Keira Sholtens
Institution: entre for Health Psychology, The Science Centre, Staffordshire University,
Email: lucy.walker@mmu.ac.uk
Brian Mcmillan,
Brian Mcmillan
Institution: Centre for Primary Care and Health Services Research, University of Manchester,
Email: bran.mcmillan@manchester.ac.uk
Christopher Armitage,
Christopher Armitage
Institution: Division of Psychology and Mental Health, Manchester Centre for Health Psychology, University of Manchester, Manchester University NHS Foundation Trust, Manchester Aca- demic Health Science Centre, NIHR Greater Manchester Patient Safety Translational Rese
Email: christopher.armitage@manchester.ac.uk
Mark Conner,
Mark Conner
Institution: School of Psychology, University of Leeds,
Email: m.t.conner@leeds.ac.uk
Tracy Epton,
Tracy Epton
Institution: Division of Psychology and Mental Health, Manchester Centre for Health Psychology, University of Manchester,
Email: travy.epton@manchester.ac.uk
Maria Cordero
Maria Cordero
Institution: Department of Psychology, Manchester Metropolitan University,
Email: m.cordero@mmu.ac.uk
Objectives Appearance-related interventions to promote healthy behaviour have been found effective to communicate health risks. The current study aimed to explore women smokers' experiences of age-progression software showing the effects of smoking on the face. Methods A qualitative design was imple...
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Objectives Appearance-related interventions to promote healthy behaviour have been found effective to communicate health risks. The current study aimed to explore women smokers' experiences of age-progression software showing the effects of smoking on the face. Methods A qualitative design was implemented, utilizing both individual interviews and focus groups within a critical realist framework. Fifteen, 19–52 year-old women smokers were administered an age-progression intervention. All participants responded to the intervention, engaged in semi-structured interviews, and were invited back to attend one of three focus groups. Data were analysed using inductive thematic analysis. Results Four main themes were identified: Health versus Appearance, Shock Reaction, Perceived Susceptibility, and Intention to Quit. Participants found the intervention useful, voicing need for a comprehensive approach that includes both appearance and health. Despite increases in appearance-based apps which could diminish impact, women's accounts of shock induced by the aged smoking-morphed images were similar to previous work conducted more than ten years previously. Conclusions The study provides novel insights in how women smokers currently perceive, and react to, an age-progression intervention for smoking cessation. Innovation Findings emphasise the implementation of this intervention type accompanied by health information in a range of patient settings.
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Posted 1 year ago
Amadea Turk,
Amadea Turk
Institution: Nuffield Department of Primary Care Health Sciences, University of Oxford,
Email: amadea.turk@phc.ox.ac.uk
Stephanie Tierney,
Stephanie Tierney
Institution: Nuffield Department of Primary Care Health Sciences, University of Oxford,
Email: amadea.turk@phc.ox.ac.uk
Geoff Wong,
Geoff Wong
Institution: Nuffield Department of Primary Care Health Sciences, University of Oxford,
Email: amadea.turk@phc.ox.ac.uk
Helen Chaterjee,
Helen Chaterjee
Institution: Department of Genetics, Evolution and Environment, UCL Biosciences
Email: amadea.turk@phc.ox.ac.uk
Kamal Mahtani
Kamal Mahtani
Institution: Nuffield Department of Primary Care Health Sciences, University of Oxford,
Email: amadea.turk@phc.ox.ac.uk
Volunteering - the giving of time and support, without expectation of payment, for the good of others, a community or organization – may bring about benefits to health and wellbeing. Formal volunteering may be considered as part of a social prescription to which link workers may refer patients. Th...
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Volunteering - the giving of time and support, without expectation of payment, for the good of others, a community or organization – may bring about benefits to health and wellbeing. Formal volunteering may be considered as part of a social prescription to which link workers may refer patients. This paper explores the role that volunteering may play as part of social prescribing by considering the impact it can have on health and wellbeing and highlighting factors that link workers may need to consider when connecting patients to volunteering opportunities. We conducted interviews with 22 museum volunteers to explore how volunteering affected their physical and emotional wellbeing, and consider the potential consequences of these experiences for social prescribing. We analysed the interviews using thematic analysis to develop a descriptive model of how volunteering may influence health and wellbeing through encouraging self-growth. Our analysis highlights that volunteering can provide “enabling environments” and opportunities for “stretch” and can contribute to people's health and wellbeing by improving their “sense of self”, “connection to others”, and “sense of community”. Our findings have implications for the use of volunteering as part of social prescribing and for volunteering organizations accepting social prescribing referrals to volunteering. These include the need to recognise the diverse needs of people receiving social prescribing and the need to tailor volunteering offers to these needs, as well as the need for link workers to be aware of the environments and support available to individuals at the volunteering organizations they are being referred to.
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Posted 1 year ago