UTC Akademic Education Site

What shape are ball bearings? They are shaped like a ball, as everyone knows, right?

The funny thing about what everyone knows is that everyone can be wrong. For instance, everybody thinks that the America’s Cup is an ocean-sailing race, and yet the Swiss managed to win the Cup. For those readers who are geographically-challenged, Switzerland is a land-locked country comprised entirely of mountains.

What does this have to do with ball bearings. Very little, I suspect, but balls have very little to do with ball bearings, either. Ball bearings look more like hula hoops. But don’t try using them for that – you will find them inconveniently heavy and painfully small.

You can view a picture of a ball bearing in the middle of this ball bearing supplier’s page.

So what are those stunted metal tube donuts called ball bearings for anyway? Are they used as a spare wheel? Do they hold in evil shop-floor spirits? No, they help things move more efficiently. In an early demonstration of bearing usage, three ladies pulled a locomotive (It was just a demonstration, not a career development).

Many bearings look very similar, whether they are ball bearings, roller bearings or other bearings. What?! Other bearings?

What is a ball bearing, anyway?

Ball bearings are formed with an outer ring, an inner ring, a cage or a retainer inside, and a rolling element inside, typically a ball (which is why they are called ball bearings). Roller bearings are formed using a roller instead of a ball, which is why they are called roller bearings (Yes, finally something that makes sense!). Other bearings look just like metal tubes, called plain bearings or bush bearings. They look like sawed off pipe or tube (something my metal tube bending client would be turning into architecturally glamorous structural supports).

Read the rest of this entry »

Have you ever wondered why your spouse, coworkers, or children seem to think so differently from you? You may not understand why they make the decisions they do, or why they place such importance on things that seem inconsequential to you. It is possible to understand the answers to all these questions. The secret lies in the theory of Myers-Briggs personality type.

In the 1960’s a psychological theorist named Katharine Briggs had many of the same questions you do. She wondered why some of her family members had such logical, linear thinking processes, when she herself was more likely to take values and feelings into account when considering an issue. In her research with her daughter Isabel Briggs Myers, she looked into this question and others, and discovered four central aspects of personality. Each one of us can be classified as either:

• Extroverted/Introverted—Do you get your energy from being with people, or being alone?
• Sensing/Intuitive—Do you see what’s actual, or what’s possible?
• Thinking/Feeling—Do you make decisions with your head or your heart?
• Judging/Perceiving—Do you like to make decisions, or keep your options open?

Our classifications on each of the scales is combined to make a four-letter type, for instance, ENTP, or ISFJ. There are sixteen types in all, encompassing all possible combinations.

With so many possibilities, you can imagine how much potential for misunderstanding there is with those around us! If we marry, or parent, or even work with someone who is very different from us, we can become increasingly baffled as to how their minds work. The key to unlocking the mystery and understanding those around us is to first understand yourself.

Where do you think you fall on the scales listed above? It can be difficult to decide, but fortunately the creators of this theory have also created a scientifically validated assessment that can tell you where you fall. This personality test is called the Myers-Briggs Type Indicator and is the most accurate and efficient way to identify your own type. Most recently it has become available in an online format, which allows convenient access to anyone wishing to discover more about themselves. The official Myers-Briggs Type Indicator can be used to produce several different types of reports, from basic to detailed, all of which you can refer to as you learn more about your own Type.
Read the rest of this entry »

The following article covers a topic that has recently moved to center stage–at least it seems that way. If you’ve been thinking you need to know more about unconditional love, here’s your opportunity.

When darkness turns to day, the sun moves over the horizon and touches everything in sight. This movement across the landscape brightens everything. Such an illumination awakens us all. We rise with energy moving in and through us allowing us to create a new day. A day unique from all the rest and creatively woven into our soul.

This is the landscape of our soul. As you can see, nature has a way of showing us just how powerful we are. The same power that created the moon and the stars and the movement of all space and time lies within the human heart. It is the heart of creation itself, and perhaps, the heart of our Creator.

Human beings are fortunate to be able to be aware of our awareness. This awareness gives us an opportunity to reflect on our soul and find blessing in being alive. Our consciousness of a creative force inside us guiding us into this world, through it, and eventually to our eternal home allows us to fulfill a purpose on this earth.

Such a purpose is beyond our own ability to really know. Yet, we can open our heart enough to allow our purpose to find us. This is done by recognizing that the things in life that really matter ARE the things in life that isn’t matter.
Read the rest of this entry »

Ataxic cerebral palsy accounts for five to ten percent of all cases of cerebral palsy. In this form of cerebral palsy, there is damage to a part of the brain called the cerebellum that helps maintain balance and coordination. When the cerebellum is damaged, it can result in poor muscle tone or hypotonia, difficulty maintaining balance and a normal gait, tremors, disorders of depth perception and an inability to control the range and motion of voluntary movements. As a result, children with ataxic cerebral palsy often demonstrate a wide-based, unsteady gait. They may also have intention tremors that are tremors that occur while attempting voluntary movements. Voluntary movements are typically clumsy and difficult to perform; finer movements, such as writing, are most severely affected. Coarser movements such as reaching for objects may also be difficult due to altered depth perception. Rapid, involuntary side-to-side movements of the eyeballs, or nystagmus, may also be present. Children with ataxic cerebral palsy may also suffer from several other conditions, such as seizures, mental retardation, and visual and hearing defects.

Poor muscle tone, abnormal posture or movements and a delay in achieving the normal developmental milestones of infancy may raise the suspicion of ataxic cerebral palsy. A physician makes a diagnosis of cerebral palsy by combining a careful physical examination of the patient with findings from imaging methods, such as CT scans and MRIs. These findings are collectively used to determine whether the brain is developing normally or not. Read the rest of this entry »