Blog

Posted on

MSS launches its 6th year with UAV ONLINE!

Marin Science Seminar Presentation: “UAV Online: The Challenges of Engineering Autonomous Drones for the Open World” with Pavlo Manovi, TLHS grad and junior at UC Santa Cruz (September 19, 2012) Download the flyer here.
This presentation will introduce the SLUGS autonomous development platform being developed at UC Santa Cruz’s Autonomous Systems Lab.  Pavlo will discuss the goals, the science/ aerodynamics/ controls/ programming/ physics aspects of the project, and the challenges and considerations faced in adapting SLUGS for the open source world.  There will be hands-on demonstrations and Q/A.
Pavlo Manovi is an alumnus of Terra Linda High School who studies robotics engineering at UC Santa Cruz. His interest in research stems from his love of prototyping and the prospect of learning and collaborating with like-minded, creative, intelligent individuals on the forefront of their field. Pavlo is a two time winner of the Marin Physics Olympics, and is a strong advocate for youth education in robotics and engineering. Pavlo hopes to build bridges between constituencies in the open source community and ensure the flow of free information in STEM fields. Pavlo plans to pursue a PhD in controls.

RVSP on Facebook here or just show up. 🙂

Join us and Learn!

Email marinscienceseminar@gmail.com to get on our email list.
Posted on

Interview with Robotics Engineer Pavlo Manovi

by Sandra Ning, Terra Linda HS

UC Santa Cruz junior and TL alumnus Pavlo Manovi gives a taste of his upcoming presentation on Unmanned Aerial Vehicles with an interview:

A SLUGS UAV simulation tour around San Francisco, using Simulink 
(uploaded 26 Jul., 2011; created by Samuel Toepke)
What makes robotics engineering so compelling?

–   What makes robotics engineering engender such a strong interest in me is the fact that the skills you need to be a competent robotics engineer encompasses most STEM fields and allows students and engineers both in academia or industry to be involved in projects from all studies of science.  Choosing a type of engineering was one of the most difficult decisions I have ever had to make, as I didn’t want to find myself focused on one field of engineering.   What I really wanted was to do everything that I loved, which is to say that I was looking for a balance of physics, computer science, math, and materials science that just didn’t exist in most traditional engineering tracks.  I found that robotics engineering neatly wraps up all of the aforementioned studies in the umbrella study of Mechatronics.  Having this aggregation of skills and foci lays the foundation for a strong field where one gets approached to build the tools that scientists and governmental agencies require to do their jobs, and that aspect of robotics keeps the work fresh and feeds my insatiable appetite for knowledge.
In general, what’s the focus of research at the UCSC Autonomous Systems Lab?

–  Autonomous robotics (aquatic, extra-terrestrial, terrestrial).  Controls theory.  Curriculum development.
What projects are you currently working on?

–  I am currently working on:
  • An Unmanned Aerial Vehicle development toolchain. (The SLUG-TUG)
  • An open source, affordable, robust four quadrant brushless DC motor controller (SLUGGISH)
  • Extreme Low Cost UAV (No silly acronym for this one yet :[ )
  • UAV Localization for Autonomous Swarms
  • Porting and refactoring Existing SLUGS UAV code to work with commercially available UAV systems
  • Creation of a UAV Curiculum for graduate students at UCSC

What is the SLUGS Autopilot?

–  http://slugsuav.soe.ucsc.edu/  This explains it pretty well.  Primarily it’s a flight algorithm development platform.  I’m currently developing a cheaper, lower power version for academia and simple missions/swarm research.
How does it differ from other UAV autopilots?

–  The biggest difference between our UAV project and other projects is that we aim to develop every bit of the UAV and not rely on off-the-shelf solutions to ultimately create an easy to use UAV.  With an entire toolchain that adapts itself to the problem presented to it, the end user can focus on solving their problem rather than focus on trying to get a piecemeal UAV to work.  Simply put, we’re trying to make a good tool that is within grasp of anyone that compromises as little as possible through a modular design and abstracted C code.
Why is it important to develop?

–  Developing easy to use, robust, powerful tools allows for innovation.  We are rapidly approaching a time where our airspace is going to be filled with more autonomous air traffic than could have ever been imagined.  Now more than ever a tool like this is necessary to allow for innovation that may solve many of the localization problems that will impede the growth of air travel/autonomous aerial vehicles in non-military airspace.  Further, there is little to no curriculum on UAV development and I am to work with a few professors with my SLUG-TUG toolchain to change that.
How soon do you think the SLUGS will be in use? Or, is it already in use?

–  SLUGS is already in use in space, military UAVs, academic UAVs, ground vehicles, and aquatic applications.  The scope of which and specifics I am not at liberty to explain.
What’s your role in the development of SLUGS?

–  I am the primary investigator of the SLUG-TUG project and I work on all aspects of the SLUGS system (electrical, code, hardware, etc).
What is the most rewarding or exciting part of being a robotics engineer? What is the most difficult?

–  The most rewarding part of being a robotics engineer is the opportunity to work with people that are as passionate about what they do as I am.  The work is always challenging and comes from all fields of study, which keeps me on me engaged and allows me to learn about everything from micro-biology to art without fully committing myself to those fields.  What is most difficult about this field of study?  That’s a very personal question and I think it varies greatly between individuals.  Contrary to what most believe I don’t consider the science to be hard as it just requires time, patience, and practice to master.  Personally, what is difficult is turning it all off.  I’m lucky enough to have many great friends and other physical/mental outlets for all of my energy, but when I find myself without anything to do coming off of the heels of a big project…  I just can’t stop.  I’d say dividing my time amongst projects and keeping myself sane when I have free time and can’t work on things are the most difficult parts about being an engineer who loves what he does.
—
Come see Mr. Manovi present ‘UAV Online: Challenges of Engineering Autonomous Drones for the Open World’ at TLHS room 207, Wed., Sept. 19th from 7:30 – 8:30 p.m.

The intro page and facebook event for the presentation are linked here.

—

Citations:

The UAV simulator video was created and uploaded by Samuel Teopke on 26 Jul. 2011.

—


Sandra Ning

Posted on

Math in the Movies

by Julia Moore, Drake HS

On April 4th, Tony DeRose Ph.D. came to the Marin Science Seminar to discuss the many applications of mathematics at Pixar studios.  As a high school student, it can seem like hours of abstract math each week is a strange use of time, but calculus, geometry and other advanced mathematics are used on a daily basis at Pixar to make the incredible animations we know and love.

The process of making an animated film involves many steps with fine tuning at each to create the incredible worlds we see on the screen.  First, the story is drawn by hand into a “storyreel”.  For each character, sketches of the character’s main facial expressions are made to understand the character’s personality.  The characters and sets are then modeled from the sketches on computers.  There are controls for the movement of different body parts of each character.  To simulate face movement, there are over 300 controls for the face movements of each character, each for a specific part of the face.  Algorithms are then applied to the scenes to simulate gravity and other movements not directly related to character movement.

In the animation stage of the process, flat polygons are used to represent curved surfaces.  Dr. DeRose showed a program in his presentation that allows polygons to be manipulated into a curved surface using midpoints and geometry.  Lighting in the movies involves many complex integral algorithms used to calculate how the light scatters across the various surfaces on the screen. 
Dr. DeRose concluded his talk by discussing the Young Maker’s Program: (http://www.youngmakers.org/) a program which allows children and teens to develop their own building projects and make them.  This program promotes math and science education and allows kids to build awesome things to share at the Maker Faire each year with other builders.  
Written By: Julia Moore 

Posted on

Interview With Dr.Susan Fisher

by Julia McKeag, Terra Linda HS

Susan Fisher, Ph.D. is the Director of Translational Research in Perinatal Biology and Medicine at UCSF. She is also a Professor in the Departments of Oral Biology, Pharmaceutical Chemistry, and Anatomy and Faculty Director at the Biomolecular Resource Center, UCSF. She is also a member of the UCSF Biomedical Sciences Graduate Program (BMS).

(Figure 1- refer to end of interview) 
What type of experiments does your lab do?
We study the early stages of human development. One of the approaches we use includes deriving human embryonic stem cell lines.
How did you become interested in stem cell research?
Stem cell research is rooted in developmental biology, which I have been interested in for as long as I can remember. I have always been fascinated by how one cell becomes an entire human being.
How do you think stem cell research will benefit humanity?
Eventually we will understand how to cure human diseases using cell-based therapies.
 
(Figure 2)
Do you think Stem cell research will continue in the future despite its surrounding controversy?
Yes. We have learned so much already using stem cell models. This is a very compelling reason for continuing these lines of investigation.
Are animal stem cells similar in structure and function to human stem cells?
There is not a clear-cut answer to this question. We know from comparative analyses that there are similarities and differences. My personal conclusion is that work in both areas is important.
 
(Figure 3)
What is the most interesting thing you’ve discovered about stem cells during your research?
We have developed a new method of deriving human embryonic stem cells that appear to be less differentiated than analogous cells derived by standard methods.
What is an average day as the Director of Translational Research in Prenatal Biology and Medicine at UCSF like? What does this position entail?
I am also head of the UCSF Human Embryonic Stem Cell Program. as Director of Translational Research, I lead programs in which we study placental function in normal pregnancy and in pregnancy complications. My job in the Human Embryonic Stem Cell Program focuses on embryonic rather than placental development. Therefore, between both jobs I get to study the cells that form the placenta and the offspring, which it supports. The work is mesmerizing and extremely rewarding! We get to ask questions about processes that very few people get to study.
Figure 1: Human Embryonic Stem Cells- in a recent medical case, Doctors at Glasgow’s Southern General Hospital grew stem cells into neural stem cells, then injected them into a stroke patient’s brain

Figure 2: Cluster of Human Embryonic Stem Cells
Figure 3: Humans, Animals, and Plants have clusters of stem cells that sustain growth and replace damaged tissues.  


Join Dr. Fisher and Marin Science Seminar this Wednesday to learn more!
Wednesday, March 28th
From 7:30 to 8:30pm
Terra Linda High School
Room 207
Julia McKeag

Posted on

Interview with Edward Hsiao MD PhD of UCSF

by Julia Moore, Drake HS

How did you become interested in musculoskeletal disorders?
I’ve always been interested in the skeleton. Although we typically think of bones as being solid and unchanging, they undergo a variety of very significant events throughout our lifetime, including growing and repairing after injury. In addition, bones are central to us as a living organism. They provide structure to our bodies, protect soft or vital organs, allow us to move efficiently, and provides bone marrow space for blood formation. We now know that many medically important diseases including osteoporosis, atherosclerosis, and heterotopic bone ossification are all a result of problems affecting normal bone formation.
How are we currently treating different types of musculoskeletal disorders?
Since we don’t  understand how many musculoskeletal disorders develop, our ability to prevent them is pretty limited. Treatments for established disease are also very rudimentary and mostly symptomatic. For example, many inherited diseases of the bone can only be treated by surgery to remove the affected bone. In some cases, we can use metal implants or joint replacement, but these have a relatively short lifespan. Even common diseases, such as osteoporosis or arthritis, have only limited medical treatments.
How do you do your research?
My research is driven by a desire to understand how hormones and genetics control human skeletal growth. Since getting samples of diseased tissues from patients is often difficult, I use a variety of model systems to study skeletal disease. This includes mouse models where I can control hormone signals, and human stem cells created from patients with genetic skeletal diseases (human induced pluripotent stem cells). Together, these models are helping us understand what causes disease and how we can develop new treatments.
What are artificial hormones and how are they advancing research and treatment?
Nature uses hormones as a way to communicate between different parts of the body. One major class of hormone molecules is called G-protein coupled receptors (GPCRs). Since there are over 500 GPCRs in the human genome, figuring out what each individual receptor does is a huge challenge. Our strategy uses a synthetic receptor that only responds to a synthetic drug. This system acts like an artificial hormone – if we add the drug, we can turn the system on; if we take away the drug, we can turn it off. This system allows us to “mimic” a normal hormone system and control that pathway using our drug. This model has proven useful for studying hormone signaling in complex organ systems, including cardiac disease, the brain, and now bone.
What do you think is the future of treatment and prevention of musculoskeletal disorders?
I think that developing robust prevention strategies is important. We also need to develop better combinations of surgical and medical management that have fewer side effects. Much of this can be gained by a better understanding of what happens in normal growth and how those mechanisms go wrong in disease. Finally, I believe that human stem cells provide a valuable new tool in this effort by allowing us to study lab-derived human tissues directly. These stem cells are already providing insights into some rare and dramatic bone diseases. We hope to be able to extend our findings to more common disorders.

Edward Hsiao will be speaking at Terra Linda High School in Room 207 on
Wednesday February 29th at 7:30-8:30pm

Written by: Julia Moore 

Posted on

Hydrology and Restoring Ecosystems

Hydrology and Restoring Ecosystems: Applications in Engineering and Earth Sciences

By Julia McKeag, MSS Intern, Terra Linda High School
We are water. Well, anywhere from sixty to eighty percent of our body anyway. We may be mostly water, however, our body still requires a daily intake of this substance. Not saltwater, not marsh water, not swamp water, not muddy water, not vitamin water, but clean, fresh, water. This need has been known since the beginning of time, an instinct stored within the very fiber of human being, and has resulted in many conflicts.
One of history’s famous “water wars” occurred between the farmers and ranchers of Owens Valley and the City of Los Angeles. In the 1800s, when Los Angeles outgrew its local water supply, the city searched for a new source of water. The mayor of Los Angeles, Fred Eaton, suggested that water from the Owens Valley could be diverted by aqueduct to Los Angeles. Owens Valley, a once fertile agricultural environment, supported various species of migrating birds, farms, and businesses. Naturally, Owens Valley inhabitants were outraged when their once fecund valley dried up into a second Mojave. The balance between the need for water, and the preservation of environment and agriculture was not reached, leaving some discouraged and many angered. 
  
This is where the study of hydrology comes into place. The field of hydrology not only concerns the sciences, but also the environment, politics, and public health. We have genius engineers and inventors, such as Archimedes and Louis Pasteur to thank for making modern society possible. However, the job of a true hydrologist requires more than engineering skills. Rachel Z. Kamman, a consulting hydrologist at Kamman Hydrology & Engineering, not only holds a B.S. in Civil Engineering from Lafayette College, but also an M. Eng., in Hydraulics, Coastal Engineering, Hydrology and Geomorphology from UC Berkeley.
The work of Kamman Hydrology and Engineering (KHE) focuses mainly on ecological habitat restoration, and revolves around projects involving fishery, wetlands, and riparian habitats. KHE has projects throughout California, most of which are on public land. In the words of Ms.Kamman, “We can not turn back time, (so) KHE works to understand how the landscape has changed and how best to improve, restore or protect ecological communities in the context of people and their infrastructure. Since water is fundamental to nature, understanding the landscape in terms of hydrology is a logical starting point for both evaluating the impacts of change and restoring ecological function.”
Ms. Kamman believes that one of the biggest problems affecting local watersheds is that people are disconnected from their environment. If people don’t realize that their actions are directly linked to the health of a local watershed, people won’t think twice about what goes into the storm drain. Fertilizers, Paint, and Soap are all deposited directly into the nearest creek or bay when vacuumed into a storm drain. 
     
Overall, the work hydrologists such as Rachel Z. Kamman is crucial to the structure and function of our society today, and a healthy watershed is critical to a healthy and functioning community. Without advances in hydrology and engineering, our society would be eons behind what it is today.
Written By: Julia McKeag
Marin Science Seminar
with Rachel Z. Kamman, P.E.
Marinscienceseminar.com
marinscienceseminar@gmail.com
twitter.com/ScienceSeminar
www.Facebook.com/marinscience
Upcoming Seminar: Wednesday February 7, 2012 from 7:30 to 8:30
Terra Linda Highschool, Room 207
Posted on

An Interview With Prominent Hydrologist: Rachel Z Kamman

Rachel Z. Kamman, P.E.
Consulting Hydrologist of Kamman Hydrology & Engineering
Interview by Julia McKeag, Terra Linda High School

1) Why did you become a hydrologist? What inspired you to study hydrology and engineering in college?
RK- I always loved sciences in school and entered college as a biology major. In my freshman year I heard that there were some cool water classes in the engineering department, so I sat in during my second semester and as a sophomore, signed up for a class in fluid mechanics (the study of the physics of water movement).  I was hooked after the first class.  Hydrology 101 was next and I loved that even more because it focuses on the movement of water across the landscape.   I studied both biology and water resources engineering in College, and wanted to combine the majors but the departments had no combined program (this was before environmental engineering existing). Eventually I had to pick a degree, and chose engineering because I wanted to focus on applied science. 
2) What types of projects do Kamman Hydrology & Engineering do?
RK- Most of KHE’s projects are focused on ecological restoration of wetlands, creeks and rivers and estuaries.  We have projects throughout California; almost all of them are on public lands (parks –  open space –  baylands).  Most of our project entailed site assessment, monitoring, engineering and geomorphic analysis, and collaboration with other natural resource scientists.  Each project is as unique as the place, the critters or habitat we are trying to improve, and then impacts and constraints created by human modifications of the landscape.    Since we can not turn back time, KHE works to understand how the landscape has changed and how best to improve, restore or protect ecological communities in the context of people and their infrastructure.  Since water is fundamental to nature, understanding the landscape in terms of hydrology is a logical starting point for both evaluating the impacts of change and restoring ecological function. 
3) What kinds of problems are affecting our local watershed?
RK- One of the biggest problems affecting our local watersheds is that people are disconnected from the natural landscape that they live in.  Once disconnected from our natural setting, we are no longer aware of our day to day impacts.  If you don’t recognize that the water in your driveway or yard is connected by a storm drain to the creek and the bay, you probably don’t think twice about rinsing your paint brush, washing your car or fertilizing your lawn. 
The second biggest problem is that there is a disconnect in our local government between individual development projects and a cumulative and long term impacts of those developments on the surrounding watersheds.   We need to get better as stepping back from a proposed development and looking at the landscape context and real costs (environmental and infrastructure) associated with new development.  These are costs that communities will have to shoulder for generations to come.  This is particularly true in the context of seal level rise.
4) What can we do to help our local watershed?
RK- One of the biggest things we can do to help our local watershed is to understand that our watershed, our communities our homes ARE habitats. The more we can integrate our neighborhoods with the native plant and animal communities and the physical landscape they depend on, the more likely they are to thrive in our midst.    Everyone who lives in a watershed is responsible for it’s care; a term often used for this is stewardship.  Every action has an impact, our daily choices determine the ecological integrity our community.   
Another important thing you can do is to act in any way possible to protect and restore the ecological integrity of our watersheds.  Protecting what we have left is critical, since, even with the best science and all the money in the world,  rarely can you replace the diversity and resiliency of a wild ecosystem. 
5) What is your opinion on the Hetch Hetchy Reservoir? Do you think the Hetch Hetchy Valley should be restored?
RK- Hetch Hetchy is a great example of an amazing natural resource lost in an era when we focused solely on meeting human demands for water without placing adequate value on natural resources.    It would be wonderful to see it restored.  
6) In your opinion, what invention (related to water) was most crucial for the success of our society today?
RK- Water treatment and delivery systems, and waste water treatment.  These systems are critical for our health.    We take them for granted.  
7) What do you think is water’s most interesting quality?
RK- Two actually:  1) The way water effects light, water colors almost everything we see.  2) The amazing power and energy contained and transmitted by water.   Consider Tsunami in Japan last year.  Water transmits energy over vast distances and timescales, think about ocean circulation, waves on a beach, water washing down the street after a downpour, raindrops on your roof.  Now shift contexts – think about role of water in a single human body, and then expand your thinking to world populations. 
  
             
Interview By: Julia McKeag
Upcoming Seminar: Wednesday, February 8th, 2012
Terra Linda High School, Room 207
7:30-8:30 p.m.
Posted on

How we Know What we Know about the Brain

by Julia Moore, Drake HS

On January 25, 2011, Dr. Raymond Swanson explained to the youth and community of Marin the modern devices and techniques used in neuroscience.

About the Seminar:
            Dr. Swanson is the professor and Vice-Chair in the Department of Neurology at UCSF.  He first became interested in neuroscience when he took at class in Physiological Psychology as an undergraduate.  His lab (Swanson Lab) does medical research to understand what will keep neurons alive, in hopes of improving the lives of patients suffering from strokes.    

            He discussed the past and current methods of neurological research.  Comparing normal brains and brains with differences is how we determine what certain parts of the brain do.  He gave the famous example of Phineas Gage who had his frontal lobe destroyed through an accident when building a railroad.  We saw major differences in Gage’s abitlity to have normal human controls (eg: sit still) and plan ahead, indicating that the frontal lobe had to do those human traits (http://www.youtube.com/watch?v=FrULrWRlGBA the story of Gage in song form).  Dr. Swanson referred to this method of brain research as “breaking the brain”.

            The current method of brain research that is superior to breaking the brain is using a  fMRI  (functional magnetic resonance imaging).  The fMRI began dominating neuroscience research in the early 1990’s.  This machine gives us non-invasive magnetic resonance imagery into the inner workings of the brain.  While this has progressed neuroscience research greatly, it can only show major energy shifts in the brain, so we cannot yet understand all the neurons involved in every process. 

fMRI Machine

fMRI Brain Scan

Please check out the links below for more information about the seminar and Dr. Swanson.
Video of the Seminar: http://vimeo.com/35806730
Written By: Julia Moore
Posted on
The Large Hadron Collider: 
What it is and what we have Learned from it so far  

Photo from ParticleFever.com

with Beate Heinemann, Ph.D.

Marin Science Seminar Presentation: “The Large Hadron Collider: What it is and what we have Learned from it so far” Watch the protons fly as Dr. Heinemann returns to tell us the latest on CERN’s Large Hadron Collider and the ATLAS project. Download the flyer here, (November 16, 2011, 7:30-8:30 pm, Terra Linda HS, Room 207, San Rafael, CA)

R.S.V.P. on Facebook here:
Facebook

“The field of “particle physics” tries to understand the physics of the most fundamental building blocks of matter. How many such building blocks are there? How do they relate to each other? Why are they there? Currently we do not have a good theory why we have any mass at all, even though of course we know that all matter has a mass. There are, however, many theories about why this might be and the goal of my experiment is to prove or disprove them, or to maybe find completely unexpected phenomena that will then need to be explained. One exciting possibility is that we find extra dimensions of space that could even result in the production of mini-blackholes. My experiment is called ATLAS and is situated at the “Large Hadron Collider” (abbreviated as LHC) that is located in Switzerland. There are more than 2000 physicists on my experiment, and many engineers and technicians: all of them collaborate with each other to answer some of the most basic and fundamental questions of Science today. In my talk I will describe how this experiment works and what we hope to discover there.” 

Dr. Heinemann is Associate Professor of Physics at UC-Berkeley.

Proudly powered by WordPress