Posts

Metabolic Carts vs Metabolic Chambers

  When it comes to measuring metabolism, the majority of the medical world adopted an approach called breath-by-breath measurement. It is  probably the most common method to assess energy expenditure nowadays. Instrument like metabolic cart or potable calorimeter are in this category. They require the air going in and out of a subject being confined […]

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Install NumPy, SciPy, scikit-learn on Mac OS X for data miners

Add on and summarized from blog http://penandpants.com/2012/02/24/install-python/ Outline: 1. install Xcode –> 2. install pip –> 3. install brew –> 4. install NumPy –> 5. install gfortran (important!) –> 6. install SciPy –> 7. install matplotlib (useful) –> 8. install scikit-learn –> 9. test Preamble: Python 2.5 ~ above is preinstalled in the current Mac […]

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Matlab Figure Plot Font Size Permanent Change

Tired of changing font size of titles and labels after plotting the figure in order to get intelligible characters in smaller scale? Matlab’s recommended solution is to get the figure handle by calling h = xlabel(‘blah’); set(h,’FontSize’,10); h = ylabel(‘blah’);set(h,’FontSize’,10); h = title(‘blah’);set(h,’FontSize’,10); However, I found invariably I had to change the font size since […]

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Data cursor precision in matlab

Tired of changing the data cursor display precision? You could change it permanently if you have a copy of Matlab on your local machine (i.e. it’s not a server version Matlab). Locate file: default_getDatatipText.m in the directory: \toolbox\matlab\graphics\@graphics\@datacursor change the line defining number of display digits to higher: DEFAULT_DIGITS = N;  % Display N digits of […]

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Gait Speed Monitoring for Aging Conditions

 Gait speed is a particularly important parameter in geriatrics, as it is the number one predictor of mortality in adults over 65 years old, with differences of just a couple tenths of a meter per second predicting statistically significant outcome differences. The most common method for gait speed estimation in medical research and clinical practice […]

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China’s one-child policy

In order to limit the growth of its population, the Chinese government decided to limit families to having just one child. An alternative that was suggested was the “one-son” policy: as long as a woman has only female children she is allowed to have more children. One concern voiced about this policy was that no family would […]

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Waiting bus paradox

Waiting bus paradox One stochastic textbook example I’m experiencing every day. To win the battle against this, I need a smart phone and a GPS bus tracking system… Back to the days when app like ‘Google Now’ was not available, we’ll just cross fingers hoping the bus schedule follows Poisson distribution, which ideally provides equal […]

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Posture Detection with Feedback

Forward Head Posture (FHP) is a common musculoskeletal disorder correlated with neck pain that affects a large percentage of the population. Though much medical research has suggested methods for diagnosis and detection of this posture, assessment has been limited due to reliance on individual in-clinic visits. In order to provide timely detection of FHP and […]

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Normal Pressure Hydrocephalus – an Aging Condition

NPH is a neuropathy caused by abnormal accumulation of cerebrospinal fluid (CSF) that normally surrounds the brain . The symptoms are usually described as a classic triad of gait disturbance, dementia or mental decline and urinary incontinence . To diagnose NPH, a high volume lumbar puncture (HVLP) procedure to remove excess fluid is usually given […]

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Cerebral Palsy Orthoses

Individuals with walking disabilities as a result of cerebral palsy (CP), stroke, muscular dystrophy, brain injury, or many other conditions are often prescribed ankle foot orthoses (AFOs), as shown in Figure 1 (a), to aid in their walking. The large number of individuals with CP that use AFOs highlights the magnitude of the problem. United CP reports that an estimated […]

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