Kinesiology 530 Blog

I posted on the website the 3D Kinematic slides with the small correction that I noted today in class. I also posted Assignment #3, which has two main parts, one associated with calculating Euler angles (which you can work on this weekend), and the second which involves working with a Joint Coordinate System as described in Grood & Suntay, Cole et al., and McClay & Manal. You can start that part too this weekend, or if you feel more comfortable, wait until we have covered it in class on Tuesday. For readings this weekend, make sure you finish Baker, Grood & Suntay, Cole et al., and McClay & Manal.

I should have Assignment #2 graded and ready to return to you on Tuesday.  Have a great weekend.

Yes, it is officially October…. the leaves are turning colors, the baseball playoffs start today, and the Final Exam schedule is out … the Kin 530 final is scheduled for Tuesday, Dec 16 at 1:30 in Morrill 1, Room N321.  But we are getting way ahead of ourselves……

I have made significant changes in the 3D kinematic slides, now posted on the website. Be sure to read the Areblad, Wu & Cavanagh, and Baker papers and bring them to class tomorrow. If you want to get ahead, the Grood & Suntay, Cole et al. and McClay & Manal papers will be discussed next, most likely next week.

I hope everyone is “enjoying” our trip into 3D kinematics. Next week we will be moving into direction angles (introduced today), projection angles, Euler and Cardan angles, and both 2D and 3D rotational transformation matrices. On the website I have posted a few new readings that we will be looking at, so be sure to get caught up on reading over the weekend while there is a break in the Assignment train … don’t worry though, we will get Assignment 3 to you next week.  My advice is to start by re-reading the first part of Chapter 2 in the textbook (pages 35 to 44 should now make perfect sense, as we have covered all this in class). Then continue by finishing the chapter (pages 45 to 52, which may not make perfect sense, but hopefully will by the end of next week). This information should help introduce you to the concepts covered in Areblad et al (1990), Wu and Cavanagh (1995), Baker (2001), Grood and Suntay (1983), and Cole et al (1993). Undoubtedly you will need to read these papers more than once to get comfortable with the concepts, terminology and scope of the discussion. This weekend looks like rain, so should be an excellent time to gain some experience reading these papers.

Have a great weekend; may all your matrices be orthonormal ……

Hi Kin 530,

We have finished grading the first assignment, which will be handed back on Tuesday. I posted the Answer key on the website, so you can check the correct solutions over the weekend. Remember that Tuesday’s class will be held in the Biomechanics Lab downstairs in Totman 23, where Ross and Lex will give you an exciting demo of our data collection system, including reflective markers, multiple cameras and 3D calibration with NLT and a wand. Please come equipped with questions; Brian will be there to provide excellent color commentary.

There are a few other readings on the website too; over the weekend read Areblad et al for sure, plus Wu & Cavanagh and Baker if you have time and wish to get ahead a little.

Cheers, have a great weekend and don’t forget to drop “orthonormal” at some point to impress your friends (?)……

It’s 8:10 Tuesday morning, and I just posted on the website the 3D kinematics slides and notes, and some readings that we will be covering Thursday and next week.  Today Brian is going to finish the Math Review on matrices, and we will begin our journey into 3D kinematics. We now have everyone in the class signed up as members in our discussion board, so feel free to start posting there any foggy bits as we learn 3D concepts and computations.

Also, do you techno-wizards all know about RSS? I didn’t, but found a great little video on YouTube that explains it to we of the 8-track generation ……. www.youtube.com/watch?v=0klgLsSxGsU ……. I also put a link in the BlogRoll….the RSS subscribe links for this blog are at the bottom of the right-hand panel under “Meta”

See you in class … remember, we are now in Totman 156.  Cheers……

I just posted on the website the new, corrected version of the 2D Kinematics slides, as mentioned by Brian in class today. Remember that Assignment 1 is due on Tuesday in class. We will be finishing the Math Review on matrices, and beginning 3D Kinematics. Please read over Appendices D and E (on vectors and matrices) to get primed for 3D kinematics, and start reading Chapter 2 in the textbook (Chapter 2: Three-Dimensional Kinematics, by Joe Hamill & Scott Selbie). In particular for Tuesday, read the first part of the chapter (pages 35 to 45)…… and don’t panic, we will be discussing the material covered in those pages at length; you will most certainly be reading and re-reading this chapter in the next few weeks.

I will post the slides and notes for 3D Kinematics later, but probably before Tuesday’s class. Have a great weekend.

Graham

A couple of reminders for today’s post. First, as I mentioned in class this morning, beginning Thursday we will be holding class in a NEW location: Totman Building, Room 156….. much better projection system / blackboard set-up. Second, a reminder that it is important to do all the readings that are assigned, even if we are not covering each page of every reading during class time. For example, the textbook reading on 2D kinematics (Chapter 1, Planar Kinematics) contains lots of information that will supplement the notes and slides, and should lead to a much better understanding of the overall topic. There is simply not enough time to cover everything during class.

I also just added links from the class website and this blog (see sidebar at right) to the Google Groups discussion board…….

Hi 530 students,

Well the first week of classes is in the bag, for Kin 530 anyway. Before next Tuesday you should do the text readings for the Math Review and 2D kinematics (see the back page of your syllabus), and also read the Hamill et al. 1992 paper that is posted on the website. You should also work on the first part of Assignment 1, also posted on the website. And if you want more detail on some of the mathematics, check out the “extra” math notes on the website, courtesy of our friend and colleague Jeff Gagnon, from Springfield College. If you don’t want more details, don’t read Jeff’s notes, as they are optional and you won’t be tested on them at any point.

At this point I have invited everyone in the class to join the discussion board on Google Groups; if you haven’t received an invitation by the end of the weekend, send me an e-mail and I will try another method of getting you in the group. The invitations seem to go out slowly, and the replies back also seem to spend time in Latvia or New Zealand [in a cafe perhaps?] before arriving back on my e-desk.  Hopefully we will get this all sorted soon.

Have a great weekend …. cheers.   GC

Hi Kin 530,

I posted the 2D kinematics slides and notes on the course website. I also posted Assignment 1, which includes a question related to the Math Review that you should be able to work on after tomorrow’s class. The second part of the assignment is from 2D kinematics, so you should wait until next week after Tuesday’s class to start work on that one. We will decide the exact “due date” next Tuesday, but at least you can get started on the assignment over the weekend.

I set up a Google Group for the class, and you should have all received invitations to join ….. I’ll check in class tomorrow to see if you all got the invitations, as I think there might have been a hitch or two along the cyber-way.

Graham

Hi Kin 530 students … the Math Review slides and class notes are posted on the website already. Hope you enjoyed today’s class … see you on Thursday.