118 research outputs found
(b2023 to 2014) The UNBELIEVABLE similarities between the ideas of some people (2006-2016) and my ideas (2002-2008) in physics (quantum mechanics, cosmology), cognitive neuroscience, philosophy of mind, and philosophy (this manuscript would require a REVOLUTION in international academy environment!)
(b2023 to 2014) The UNBELIEVABLE similarities between the ideas of some people (2006-2016) and my ideas (2002-2008) in physics (quantum mechanics, cosmology), cognitive neuroscience, philosophy of mind, and philosophy (this manuscript would require a REVOLUTION in international academy environment!
Gabriel Vacariu (c2023 to 2014) The UNBELIEVABLE similarities between the ideas of some people (2006-2016) and my ideas (2002-2008) in physics (quantum mechanics, cosmology), cognitive neuroscience, philosophy of mind, and philosophy
Unbelievable similar ideas to my ideas published long before..
USING MUSCULOSKELETAL MODELING TO ASSESS MUSCLE FUNCTION AND GAIT ASYMMETRY AFTER A STRAYER PROCEDURE APPLIED TO A CHILD WITH CEREBRAL PALSY
Cerebral palsy (CP) is a common group of neuromotor disorders with symptoms appearing
during childhood. Children with CP often undergo orthopedic surgeries and
treatment plans depending on the gait pattern and its severity. Jump gait is a gait pattern
present in bilateral spastic CP and is characterized by a combination of ankle equinus,
accentuated hip and knee flexion, lumbar lordosis, and anterior pelvis tilt. The modified
Strayer procedure is a surgical intervention to treat equinus in ambulatory children
with CP and is often accompanied by botulinum toxin type A (BTX) injections to aid
in spasticity reduction. Musculoskeletal modeling is a promising approach to indirectly
estimatemuscle function, includingmuscle force, andmuscle induced accelerations. Gait
asymmetry is often studied as it is associated with pathological gait. This study aimed
to analyze the improvements in gait function in one child with CP following corrective
surgery for jump gait. Gait asymmetry, muscle forces and contributions to the center of
mass accelerations during walking were assessed before, one and two years after surgery.
Furthermore, comparison with typically developed children was also performed. Threedimensional
marker coordinates and ground reaction forces (GRF) during walking were
recorded and used as input for musculoskeletal simulations using OpenSim. Two years
post-surgery, gait asymmetry reduced to levels similar to or lower than unimpaired gait.
Overall joint kinematics improved, although the increase in dorsiflexion was not enough
to achieve heel strike at first contact in the lower limb submitted to surgery. Estimates of
muscle forces showed the child with CP relied more on proximal muscles to walk, mainly
the vasti and hamstrings, before and after surgery. Soleus muscle forces increased following
surgery, becoming the primary contributor to vertical support from the plantarflexors.
Suggestions were made for treatment plans and for maintaining surgical improvements,
such as strengthening of weakened muscles.Paralisia cerebral (PC) é um grupo de perturbações neuromotoras cujos sintomas aparecem
durante a infância. Crianças com PC são regularmente submetidas a cirurgias ortopédicas
e planos de tratamento de acordo com o padrão de marcha e grau de severidade.
Marcha em salto é um padrão de marcha presente em PC espástica bilateral caracterizada
por pé equino, flexão acentuada do joelho e anca, lordose lombar, e inclinação pélvica
anterior. O procedimento modificado de Strayer é uma cirurgia comum para tratar pé
equino em crianças com PC em contexto ambulatório e é normalmente acompanhada
por injeções de toxina botulínica. Modelação musculoesquelética é uma abordagem que
permite estimar, indiretamente, as forças e acelerações induzidas musculares. Assimetria
na marcha é frequentemente estudada por estar associada a uma marcha patológica. O
objetivo deste trabalho consiste em estudar as melhorias na marcha de uma criança com
PC após cirurgia. Assimetria da marcha, forças e contribuições musculares para a aceleração
do centro de massa foram avaliadas antes, um e dois anos após cirurgia. Além disso,
foi feita a comparação com marcha saudável. Foram gravadas as coordenadas tridimensionais
dos marcadores e forças de reação do solo para as simulações musculoesqueléticas
através do OpenSim. Dois anos após cirurgia, a assimetria melhorou para níveis semelhantes
ou inferiores aos da marcha saudável. Em termo gerais, a cinemática melhorou,
porém, apesar da capacidade de dorsiflexão ter aumentado, o calcanhar não estabelece o
primeiro contacto no membro inferior submetido a cirurgia. Resultados das forças musculares
mostram uma maior dependência em músculos proximais na criança com PC,
principalmente o vasto e os isquiotibiais, antes e após cirurgia. As forças musculares do
solear aumentaram após cirurgia, tornando-se o principal plantarflexor a contribuir para
o suporte. Fortalecimento de músculos enfraquecidos foi um dos planos de tratamento
sugeridos para preservação das melhorias obtidas pela cirurgia
Evaluating footwear “in the wild”: Examining wrap and lace trail shoe closures during trail running
Trail running participation has grown over the last two decades. As a result, there have been an increasing number of studies examining the sport. Despite these increases, there is a lack of understanding regarding the effects of footwear on trail running biomechanics in ecologically valid conditions. The purpose of our study was to evaluate how a Wrap vs. Lace closure (on the same shoe) impacts running biomechanics on a trail. Thirty subjects ran a trail loop in each shoe while wearing a global positioning system (GPS) watch, heart rate monitor, inertial measurement units (IMUs), and plantar pressure insoles. The Wrap closure reduced peak foot eversion velocity (measured via IMU), which has been associated with fit. The Wrap closure also increased heel contact area, which is also associated with fit. This increase may be associated with the subjective preference for the Wrap. Lastly, runners had a small but significant increase in running speed in the Wrap shoe with no differences in heart rate nor subjective exertion. In total, the Wrap closure fit better than the Lace closure on a variety of terrain. This study demonstrates the feasibility of detecting meaningful biomechanical differences between footwear features in the wild using statistical tools and study design. Evaluating footwear in ecologically valid environments often creates additional variance in the data. This variance should not be treated as noise; instead, it is critical to capture this additional variance and challenges of ecologically valid terrain if we hope to use biomechanics to impact the development of new products
Actor & Avatar: A Scientific and Artistic Catalog
What kind of relationship do we have with artificial beings (avatars, puppets, robots, etc.)? What does it mean to mirror ourselves in them, to perform them or to play trial identity games with them? Actor & Avatar addresses these questions from artistic and scholarly angles. Contributions on the making of "technical others" and philosophical reflections on artificial alterity are flanked by neuroscientific studies on different ways of perceiving living persons and artificial counterparts. The contributors have achieved a successful artistic-scientific collaboration with extensive visual material
Machine Learning Methods with Noisy, Incomplete or Small Datasets
In many machine learning applications, available datasets are sometimes incomplete, noisy or affected by artifacts. In supervised scenarios, it could happen that label information has low quality, which might include unbalanced training sets, noisy labels and other problems. Moreover, in practice, it is very common that available data samples are not enough to derive useful supervised or unsupervised classifiers. All these issues are commonly referred to as the low-quality data problem. This book collects novel contributions on machine learning methods for low-quality datasets, to contribute to the dissemination of new ideas to solve this challenging problem, and to provide clear examples of application in real scenarios
Walking with the Earth: Intercultural Perspectives on Ethics of Ecological Caring
It is commonly believed that considering nature different from us, human beings (qua rational, cultural, religious and social actors), is detrimental to our engagement for the preservation of nature. An obvious example is animal rights, a deep concern for all living beings, including non-human living creatures, which is understandable only if we approach nature, without fearing it, as something which should remain outside of our true home. “Walking with the earth” aims at questioning any similar preconceptions in the wide sense, including allegoric-poetic contributions. We invited 14 authors from 4 continents to express all sorts of ways of saying why caring is so important, why togetherness, being-with each others, as a spiritual but also embodied ethics is important in a divided world
Play Among Books
How does coding change the way we think about architecture? Miro Roman and his AI Alice_ch3n81 develop a playful scenario in which they propose coding as the new literacy of information. They convey knowledge in the form of a project model that links the fields of architecture and information through two interwoven narrative strands in an “infinite flow” of real books
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