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D'alessio
05-03-2000, 05:41 PM
dear leonard
more or less one month ago a question of mean frequency has been posted on
the list.
on the median frequency there are papers by de luca and merletti on IEEE
trans. BME (1988 - 1990?).
as for the mean frequency, we designed a real time algorithm for its
evaluation starting from the time history of the signal, therefore without
a previous calculation of the spectrum. the algorithm is more efficient
than those with the FFT approach. the reference paper is: Conforto,
D'Alessio: Real time monitoring of muscular fatigue from dynamic surface
myoelectric signals using a complex covariance approach, Med. Eng. &
Physics, 1999, pp. 225-234.
regards
tommaso d'alessio


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> Da: Automatic digest processor
> A: Recipients of BIOMCH-L digests
> Oggetto: BIOMCH-L Digest - 1 Aug 2000 to 2 Aug 2000 (#2000-158)
> Data: giovedý 3 agosto 2000 0.06
>
> There are 10 messages totalling 509 lines in this issue.
>
> Topics of the day:
>
> 1. POSTING: GAIT LAB MANAGER
> 2. biomech in Mexico
> 3. Manager, Applied Research
> 4. Joint Stiffness
> 5. Triple Jump Kinematic Data
> 6. sig-wtk: ASL vs ISCAN eye trackers
> 7. EMG fatigue in LabVIEW
> 8. The real Dempster
> 9. RESEARCH TECHNICIAN/ ENGINEER
> 10. Fellowship in Biomechanics-Balance Studies
>
> ---------------------------------------------------------------
> To unsubscribe send SIGNOFF BIOMCH-L to LISTSERV@nic.surfnet.nl
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> ---------------------------------------------------------------
>
> ----------------------------------------------------------------------
>
> Date: Tue, 1 Aug 2000 11:42:29 -0700
> From: chestnut@UDEL.EDU
> Subject: POSTING: GAIT LAB MANAGER
>
> Gait Analysis Manager
> Gait Analysis Laboratory
> duPont Hospital For Children
> Wilmington, DE 19899
>
> The Gait Analysis Laboratory at the duPont Hospital for Children in
> Wilmington Delaware is accepting applications for Manager of its Gait
> Analysis Laboratory.
>
> The duPont Gait Laboratory is a well-established laboratory performing
> 400 clinical evaluations per year mainly for children with cerebral
> palsy but including and a myriad of other neurologic and orthopaedic
> conditions. Most of the referrals come from the orthopedic staff at the
>
> duPont Hospital for Children, which has the largest pediatric orthopedic
>
> department in the US.
>
> The Gait Analysis Laboratory is equipped with a six camera Motion
> Analysis Hi-Resolution system, two AMTI force platforms, sixteen channel
>
> telemetered EMG system, a K4 Oxygen analysis system and an F-Scan
> plantar pressure measurement system. The laboratory is currently staffed
>
> by a Manager/Biomechanist, a Biomechanical technician, two physical
> therapists, secretarial staff, and an orthopedic surgreon who utilizes a
>
> team approach in assessing the posture and walking patterns of children.
>
> Primary responsibilities:
>
> Clinical services:
> *The Coordinator will manage the clinical and research activities of the
>
> Lab, and make recommendations to Administration regarding equipment and
> staff.
>
> *Work closely with clinicians and other hospital staff on research
> projects, providing advice and leadership in their design, execution,
> and analysis.
>
> *Maintain and trouble shoot all hardware and software in lab, evaluate
> clinical operation and make changes where appropriate to enhance
> efficiency of staff and accuracy of analysis
>
> *Oversee budgetary issues and development of technology in lab.
>
> Education:
> *Develop lectures; teaches staff, residents, fellows, and physical
> therapists, on a local, national or international level.
>
> Research:
> *Write and assist in writing, papers, and protocols; coordinate studies;
>
> perform data collection and interpretation; present results at
> professional meetings.
>
> Qualifications:
> The qualifications for the Manager position include the following:
> *Master's degree required, PhD preferred, in a field relevant to
> movement science.
> *Minimum of five (5) years of experience in patient-related aspects of
> biomechanical measurement and analysis, resulting in publications in
> peer-reviewed journals.
> *Recent experience with Motion Capture systems
> *Supervisory experience in a gait lab
> *Excellent computer skills, particularly in the modeling of human
> movement.
>
> Setting:
> Located just outside Wilmington, Delaware on the wooded 300-acre estate
> of philanthropist Alfred I. duPont, the hospital offers the full range
> of specialties of pediatric medicine, surgery, and dentistry, educates
> and trains physicians and allied health professionals, and conducts
> research into the causes, prevention, and treatment of childhood injury
> and disease.
>
> Founded in 1940 as a children's orthopedic hospital, the duPont Hospital
>
> for Children is now a full-service regional pediatric medical center
> offering a complete range of clinical programs.
>
> Since its founding, the hospital has served thousands of children from
> across the country and around the world. Today, the hospital staff
> draws on its legacy of experience and compassion to provide the highest
> level of care in a unique child and family-centered environment.
>
> Application:
> The duPont Hospital for Children is an equal opportunity employer. A
> comprehensive benefits package and salary commensurate with experience
> are offered. Qualified candidates, mail, fax or e-mail vita to:
>
> Mike Janes
> Generalist, Human Resources
> DuPont Hospital for Children
> 1600 Rockland Road
> Wilmington, DE 19899
> mjanes@nemours.org
> FAX: 302-651-6119
>
> ------------------------------
>
> Date: Sun, 1 Aug 0100 18:54:55 +0000
> From: Patrick Avogadro
> Subject: biomech in Mexico
>
> Dear readers,
>
> is there anyone who knows if there are some biomech labs in Mexico ?
> I search for that on many search engines but failed to find any.
>
> thanks for your answers
>
> sincerely yours
>
> Patrick AVOGADRO
> PhD student
> st etienne
> FRANCE
>
> ------------------------------
>
> Date: Wed, 2 Aug 2000 09:01:41 +0200
> From: Andreas Boehm
> Subject: Manager, Applied Research
>
> Manager, Applied Research
> North County Location
>
> Orthopedic medical device manufacturer is seeking an individual who will
be
> responsible for applied research functions with emphasis towards product
> development objectives. Will assure that appropriate test procedures,
> equipment utilization, data reduction and results reporting are adhered
to.
> Requirements include:
>
> Bachelor's degree in Bio-Engineering or related field; Master's degree
> preferred with Bachelor's degree in Mechanical Engineering.
> Minimum 6 years Bio-Engineering experience in orthopedic research related
to
> testing and product development.
> Prefer 2 years additional mechanical engineering experience in medical
> product development.
> Excellent communication skills with ability to effectively communicate
with
> all cross functional levels of management and present information to
groups
> of people.
> Must be able to prepare research reports, develop protocol and coordinate
> clinical evaluation of new and existing products.
>
> Visit us at our web site www.donjoy.com . We offer a fast paced
> environment, competitive wages and an excellent benefits package. Apply
at,
> or fax/send E-mail resume to:
>
> dj Orthopedics
>
> ------------------------------
>
> Date: Wed, 2 Aug 2000 18:37:32 +1000
> From: Justin Ludcke
> Subject: Joint Stiffness
>
> Biomch-L Colleagues,
>
> I have a query that relates very closely to a question recently posed by
> John Finan (University College Dublin) on joint stiffness. Within our
> research we are modelling the Standing Hybrid III Dummy on a moving
floor.
> The defined joint stiffness of the lower limbs (particularly the knee)
> consist of little or no stiffness throughout the normal range of motion
> with a dramatic increase when nearing the end of the joint ROM. This is
to
> simulate the physical end-limits of joint motion.Therefore any upward
> movement of the floor causes the dummy to crumble. Is there any data or
has
> there been any work done on the stiffness properties of these joints in
> anticipation of an upward force? For example, the stiffness in the knee
> before landing from a jump. We are not primarily concerned with any
> increased stiffness due to increased muscle activation during the impact.
> We would like some idea of joint stiffness applied by the semi-conscious
> muscle activation in anticipation of the upward force.
>
> Your help would be greatly appreciated and a summary will be posted.
>
> Thanks,
> Justin
>
>
>
----------------------------------------------------------------------------

> ----------------
> Justin Ludcke
> PhD Student
> School of Mechanical, Manufacturing and Medical Engineering
> Queensland University of Technology
> GPO Box 2434
> Brisbane Q 4001
> AUSTRALIA
>
> Ph: +61 7 3864 2980
> Fax: +61 7 3864 1469
> Email : j.ludcke@qut.edu.au
>
----------------------------------------------------------------------------

> ----------------
>
> ------------------------------
>
> Date: Wed, 2 Aug 2000 22:20:56 +1000
> From: Shawn Sorenson
> Subject: Triple Jump Kinematic Data
>
> Hello All,
>
> I am a mechanical engineering student from Rice University in Houston,
TX,
> with an extensive interest in sports biomechanics, particularly as
applied
> to horizontal jumping in track & field.
>
> I have been doing studies of biomechanics in the triple jump since fall
of
> 1996, at which time I performed an analysis of horizontal speed in
> Jonathan Edwards' record leap from 1995. My work over the last 4 years
> has culminated in a thesis project which is my current focus. In this
> project, I hope to obtain and analyse as much horizontal velocity data in
> the triple jump as possible.
>
> To this end, I am searching for any and all such data from previous or
> current studies. I have found little data of this type in published
> work. However, I believe there must be a great deal of this data in
> existence. Even if only I could locate position data, I could readily
> derive the velocity data which I am interested in.
>
> If anyone could provide me with information as to where I might locate
> this type of data, I would be extremely appreciative. In addition, any
> suggestions with regard to the collection of new data, or possible
> research collaborations, would be welcomed.
>
> I have posted a project webpage at:
>
> http://student.uq.edu.au/~s803964/gsra/
> which includes some of my previous relevant work. Further information on
> my biomechanics studies may be found on Kangaroo's Triple Jump Online,
at:
> http://www.owlnet.rice.edu/~riceroo/tjol/
>
> Thank you and best regards,
>
> Shawn Sorenson, Rice University
> Currently studying at the University of Queensland - Brisbane, Australia
> [E-Mail] riceroo@rice.edu OR s803964@student.uq.edu.au
> [WWW] http://www.owlnet.rice.edu/~riceroo/tjol/
> [Telephone] +61 7 3871 9723
>
> ------------------------------
>
> Date: Wed, 2 Aug 2000 08:30:47 -0400
> From: Vineet Gupta
> Subject: sig-wtk: ASL vs ISCAN eye trackers
>
> Hi Everyone:
>
> We are in a process of making a decision about purchasing an eye-tracking
system
> ( it may be head band mounted or remote desk mounted).
>
> My questions:
>
> 1. Do you have any recommendations between Applied Sciences Laboratory
(ASL)
> and ISCAN eye tracking system?
> 2. Does anyone know of any technical limitations of either systems? For
example
> ease of calibration, stray spots causing error in tracking, loss of
calibration
> etc.
> 3. If you are using any one of (or both) the eye tracking system(s) can
you
> please send me your contact information so that I can directly contact
you for
> more information about the system?
> 4. Do you have any papers published on the use of the eye tracking
systems?
>
> Thanks in advance for your help.
>
> Vineet Gupta
>
>
> Vineet Gupta, Ph.D.
> Senior Research Engineer
> Assistive Technology & Neuroscience Research Center/Rehabilitation
Engineering
> National Rehabilitation Hospital
> 102, Irving Street, NW
> Washington, DC 20010
> Phone: (202) 877-1554 (Office)
> (301) 847-6716 (Home)
> Email: vxg4@mhg.edu (Office)
> seema@sprintmail.com (Home)
>
> ------------------------------
>
> Date: Wed, 2 Aug 2000 13:40:38 +0100
> From: "Leonard.O'Sullivan"
> Subject: EMG fatigue in LabVIEW
>
> Hi all,
> I'm getting my head around LabVIEW (V. 5.0) for use in the
> collection and analysis of EMG signals. However, I am having problems
> getting the Median Power Frequency (MPF) and mean power frequency from my
> EMG signals. I have obtained the power spectrum and have plotted it.
Getting
> the parameters of the spectrum is my problem.
>
> I would greatly appreciate,
> A. suggestions how to get these parameters
> B. LabVIEW snippets showing how to do it (either screen grab or actual
code)
>
>
> Kindest regards
> Leonard O'Sullivan
>
>
> Ergonomics Research Centre
> University of Limerick
> Castletroy
> Limerick
> Ireland
>
> ------------------------------
>
> Date: Wed, 2 Aug 2000 18:01:59 +0100
> From: Richard Baker
> Subject: The real Dempster
>
> I'm reviewing Dempster's 1955 data on the position of the centre of mass
of
> different body segments. I've got a copy of the original report which
> appears to contain a couple of typographical errors (e.g. position of CM
of
> lower leg with and without foot is identical). Winter (Biomechanics of
Human
> Movement, John Wiley, 1979 p151) cites Dempster but gives different
values
> which look more convincing (0.433 from knee without foot, 0.606 with).
> Winter cites the data as having come "via Miller and Nelson" or "via
> Plangenhoef".
>
> Does anyone out there have an explanation for this or know a reference
for
> either Miller and Nelson or Plangenhoef?
>
> Thanks
>
> Richard
>
> Richard Baker PhD
> Gait Analysis Service Manager
> Musgrave Park Hospital, Stockman's Lane, Belfast, Northern Ireland, BT9
7JB
> Tel: +44 2890 669501 ext 2155 or 2849
> Fax: +44 2890 382008
>
> ------------------------------
>
> Date: Wed, 2 Aug 2000 15:47:59 -0400
> From: "Ball, Kevin Ph.D."
> Subject: RESEARCH TECHNICIAN/ ENGINEER
>
> RESEARCH TECHNICIAN/ ENGINEER
>
> New York Chiropractic College (NYCC), a professional degree granting
> institution offering the Doctor of Chiropractic degree, has an immediate
> opening for a full-time Research Technician/ Engineer.
>
> RESPONSIBILITIES: Key responsibilities include updating and developing
> analysis software and participating in data collection, reduction, and
> analysis; assisting visiting faculty, researchers, and students with
> research projects; and collaborating with researchers on related clinical
> trials. The Research Technician/ Engineer will work in a well-equipped
and
> generously funded Gait/ Biomechanics Laboratory (OptoTRAK, 8 camera Peak
> MOTUS, air-bearing AMTI force platforms, etc.) Research areas will
include
> basic, applied, and clinical studies on gait, posture, balance, and
orthotic
> interventions. Emphasis is on investigating biomechanical and
> neurophysiological mechanisms. NYCC collaborates in its research
activities
> with several nearby Universities and Colleges including Syracuse
University,
> University of Rochester, Cornell University, and Ithaca College.
>
> LOCATION: NYCC is located on the northern tip of Cayuga Lake in the heart
of
> the Finger Lakes Region in beautiful upstate, Seneca Falls, New York.
There
> is easy accessibility to diverse shopping and cultural centers in the
nearby
> cities of Syracuse and Rochester. The campus is adjacent to an executive
> golf course and a New York State Park. The local country roads wander
among
> farms, wineries and pleasant lakeside scenes. The Seneca-Cayuga Canal
> system goes through the center of Seneca Falls. There are plenty of
> opportunities for an outdoor enthusiast such as; boating, fishing,
downhill
> and cross-country skiing.
>
> QUALIFICATIONS: Bachelors required, Masters degree preferred in
> Biomechanics / Biomedical Engineering / Kinesiology. The ideal candidate
> will have a background in various areas such as gait research, human
> movement analysis, computer graphics, engineering principles, motor
control
> and exercise science. Experience in a laboratory environment including
data
> acquisition and signal processing; computer programming skills (fluency
in
> LabView and/or C/C++) and the ability to troubleshoot biomechanical
> instrumentation (force, plate, EMG, force sensors) are required for this
> position. Some experience in computer networking and systems
administration
> is desirable. Practical electronics skills would be helpful. Strong
> organizational and interpersonal skills are essential for interaction
with
> the research team and participants.
>
> SALARY IS COMMENSURATE WITH EXPERIENCE
>
> Interested candidates please submit a letter of application including
> professional goals and interests, a resume containing education, work
> experience, and training, and a list of references to:
> Office of Human Resources
> New York Chiropractic College
> 2360 State Rt. 89
> Seneca Falls, NY 13148
>
> EOE: M/F/V/D
>
> Inquiries regarding the position can be addressed to:
> Dr. Kevin A. Ball, Director of Biomechanics/ Gait Laboratory
> New York Chiropractic College
> 2360 State Route 89
> Seneca Falls, NY 13148
> (315) 568-3858 kball@nycc.edu
>
> Review of applications will begin on August 15, 2000 and continue until
the
> position has been filled.
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~
> Kevin Arthur Ball, Ph.D.
> Director, Biomechanics Research Laboratory
> New York Chiropractic College
> 2360 State Rte 89
> Seneca Falls, NY 13148
>
> kball@nycc.edu kevin.ball@utoronto.ca (alumnus)
> 315-568-3858 voice 315-568-3017 FAX
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~
>
> ------------------------------
>
> Date: Wed, 2 Aug 2000 16:13:15 -0500
> From: "Amundson, Kristin L."
> Subject: Fellowship in Biomechanics-Balance Studies
>
> Please post the following position. If you have any questions, please
> contact me at the number below or via email. Thank you.
>
----------------------------------------------------------------------------

> -------------------------------------------------------------------------
> Applications are invited for a postdoctoral position to study human
movement
> and balance with emphasis on the biomechanics of balance and mobility in
the
> elderly. The postdoctoral fellow will develop mathematical models of
> postural control along with innovative approaches for studying dynamic
> stability of patients with balance impairments, such as vestibular
> dysfunction, traumatic brain injury, and cerebral palsy. The
postdoctoral
> fellow will collaborate in these investigations with the
Vestibular/Balance
> Laboratory and the Department of Physical Medicine & Rehabilitation.
>
> Traineeships are available for two (under exceptional circumstances
three)
> year periods. Physicians who have recently completed residency training
in
> rehabilitation-related fields (e.g., Physical Medicine and
Rehabilitation,
> Neurology, Orthopedics and Rheumatology) and Ph.D.s in specialties
relevant
> to balance and rehabilitation (e.g., engineering, motor control,
> computational neuroscience, and biomechanics) are eligible for
> consideration. Experience with motion analysis systems, force platforms,
and
> electromyography would be beneficial. Successful candidates will be
> selected on the basis of academic record, research experience, career
goals,
> letters of recommendation and motivation for a career in academic
> rehabilitation. Women and under-represented minorities are encouraged to
> apply.
>
> ELIGIBILITY: Applicant must also be a citizen or non-citizen national of
> the United States or must have been legally admitted as a permanent
> resident.
>
> To apply, applicants should send a cover letter stating that you are
> interested in Position B with a statement of interests, a curriculum
vitae
> and the names and contact information of three references to:
>
> Kristin Amundson
> Mayo Foundation Orthopedic Biomechanics Laboratory
> 200 First Street SW
> Rochester, MN 55905
> (507) 284-2262 FAX (507) 284-5392
>
> Mayo Foundation is an affirmative action and equal opportunity educator
and
> employer
>
>
----------------------------------------------------------------------------

>
----------------------------------------------------------------------------

> --
>
>
>
> Kristin Amundson
> Mayo Clinic
> Orthopedic Biomechanics Lab
> 200 First St SW
> Rochester MN 55905
> tel: (507) 284-2262
> fax: (507) 284-5392
>
> ------------------------------
>
> End of BIOMCH-L Digest - 1 Aug 2000 to 2 Aug 2000 (#2000-158)
> ************************************************** ***********

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