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Burn Food—Eat Fuel!

Fire
This summer as I traveled I heard a number of opinions regarding the use of ethanol to fuel cars. Some are for it in order to reduce the consumption of fossil fuels. Some are for it to reduce carbon dioxide emissions. (Ethanol might burn with less pollution than gasoline.) Others are against it since there is a shortage of food in various parts of the world. The ethanol industry has driven the price of corn way up in the past year. In turn the price of other commodities like soybeans and rice have tracked the price of corn upwards. Thus all of us are paying more for food, which is not good for the poor people in the world, to understate the problem. Opponents of ethanol cry “Don’t burn our food!” (Maybe you think gasoline prices are the big problem now?)

Consider this however: In order to grow corn, soybeans, rice, or practically any plant, we generally use petroleum dependent methods. The fertilizer, herbicides, and pesticides we use are petroleum-based. The tractors and combines that plant, cultivate, and harvest the crops run on diesel or gasoline. After harvesting, the processing and distribution of most crops also rely heavily on gasoline or diesel.

Increases in farm crop yields correspond very nicely with the introduction of petroleum based farming starting in the 1930’s. Some people call this “high input farming.” For example, corn yields in Indiana were about 20 to 40 bushels per acre from the late 1800’s through 1930 and the trend was pretty flat. Farmers now consider 140 bushels per acre a poor yield. Here in Sioux County, Iowa, 160 bushels per acre is common. Considering that the availability of corn and soybeans depends heavily on “high input farming” (and on improved genetics, especially in the recent decades), to a degree we are eating our fuel. What farms do is convert petroleum products such as fertilizer, pesticides, and diesel, to food. Yes, sunlight contributes something important too, but modern farming practiced without the petroleum inputs would cause yields to plummet and probably at least half of our food supply would go away. Farming practices could be changed to improve the yields without high-input practices, but it would take take time to develop the new hybrids and farm practices needed to approach the yields now achieved. And given that in the future we might have good farm yields without high inputs of petroleum products, we can then engineer systems to more efficiently produce fuel from crops.

The high cost of petroleum products poses a complicated challenge. It is partly a technical challenge. It is also a political and even a spiritual challenge to be sure that there is enough to eat. An engineering degree is one good way to participate in helping to provide food and fuel. An engineering degree from Dordt College is better. Here you will study these issues in a Christian context.

CEEC: One, Two, Three, Four

Banner ad, July 2008 page 5

I’ll write about the advertisement above in a minute. But first, in my last post to this blog I mentioned that I recently attended two conferences and I reported on the ASEE Annual Conference in that blog entry. Next, I went to the Christian Engineering Educator’s Conference (CEEC), which I will review in this blog post.

There is so much to report, I can only pick and choose highlights. A recent advertisement in the July 2008 issue of “The Banner” (pictured above) inspired me to organize this review of CEEC along the lines of the parameters of curricular organization described in “The Educational Framework of Dordt College.” That’s a rather long document, but it describes in detail how Dordt faculty strive to teach their courses. That’s the basis of the advertisement.

1. Every inch of this world belongs to God
That’s our religious orientation.
Murat Tanyel and David Shaw of Geneva College gave an interesting paper on a proposed new textbook for freshman engineering courses. In the first chapter of this text they propose to discuss the idea of worldview, and in particular, the Christian perspective that the God of the Bible created everything and everything thus belongs to him. Although there is no debate among Christians that “God created it all,” we know there are different perspectives among Christians as to how creation happened. Theistic evolution and Creationism are two theories that come to mind. I’m not sure how far this new textbook might go to discuss how your view of creation influences your work, but clearly, if you believe that God created and is the owner of the universe, that will necessarily influence your engineering work. For example, how important is energy conservation? The only way to get at a question like that is to consider what you value and why you value it.

If you believe that God created and is the ultimate owner of the universe, then you can’t just say, “so what?” to important questions like, “what kind of work (or college major) should I choose?” To help us try to answer questions like that, Max Deffenbauh presented a paper on, “Career Choice in the Light of the Kingdom of God: An Engineer’s perspective.” He reviewed several ideas of what the “Kingdom of God” might be. One definition of the Kingdom of God, accepted by some people, is that it is, “God’s rule in the hearts and lives of people who accept God into their lives.” Another different definition of the Kingdom of God, what he labeled the “reformed perspective,” is that, “the Kingdom of God is God’s rule over the entire created order, now present in all dimensions but limited in degree. In this perspective people who submit to God’s rule become agents and stewards of that rule. . . .” Max then critiques these two definitions and proposes a third definition to resolve his critique: “the Kingdom [of God] is the final, perfect state of creation, initiated by a supernatural act of God and characterized by universal and perfect relationship with God as well as an end to sin, suffering and death.” He then explains that Christ’s life on earth is a call for Christians to live now in the light of the certainty of that future. These are issues that we discuss in our courses at Dordt College too.

2. The world is of a piece
That’s how He structured creation
In other words, Christians believe that the universe acts dependably and consistently through time and space, and that this is only a consequence of God’s faithfulness to us. (Hebrews 1:3) Every second of every day is possible only because of God’s upholding of the universe with all it’s orderliness and chaos. Because of His faithfulness, scientific theories are possible and engineering design can be done based on those theories. Dr. Emer of Calvin College gave a paper on various meanings of the story of the tower of Babel. Near the end of the paper she discussed goals of some technologies of providing self-sufficiency (e.g. the U.S. should develop a self-sufficient supply of energy). She drew interesting parallels to the story of the tower of Babel. There is danger in failure to recognize that all people depend on God every day, every second. She writes, “The Babel story emphasizes the need to recognize our own dependence on God, in all our activities, but also in our technology.”

In a paper on “Engineering as Mission,” William Jordan of Baylor University points out that the Bible writers lived prior to our modern scientific era, and therefore we cannot expect to find a direct biblical basis for doing engineering in the Bible. But there are examples in the bible of technical work being done. For example, Exodus 31:1-7. Dr. Jordan points out that even the skill to be an engineer is a gift from God. Sadly, due to sin, what we build will not last forever. (Ecclesiastes 2) Yet, what we do matters to the Lord of all creation (Ephesians 5:15-16, Colossians 3:23).

3. We develop it for good or ill
That’s our cultural challenge

What constitues engineering work that God would approve of has long been a topic of discussion among Christian engineering educators. Here at Dordt College we have used Dooyeweerd’s theory of modal aspects to help guide our thoughts on norms (standards) for engineering. In the book, Responsible Technology, published over twenty years ago (1986) the authors, (Monsma et al) restate some of the modal aspects in terms more easily related to typical engineering work. At the CEEC conference Steve VanderLeest of Calvin College gave a paper on “Wider and Deeper Norms for Technology Design.” In this paper Dr. VanderLeest proposes that there are yet more norms that need to be considered. This is a possibility that Dooyeweerd originally suggested regarding his list of fifteen modal aspects. Dr. VanderLeest proposes the virtue of humility as a previously missing norm. “Engineers should design technology with a certain modesty, knowing that (as created beings) we are finite, and thus cannot predict all the ways our technology might be used or abused.” Dr. Vanderleest also suggests that a direct Biblical foundation for the engineering norms proposed in the book Responsible Technology can be found, rather than the more complicated philosophical foundation offered by Dooyeweerd. He then visits in turn each of the six norms proposed in the book Responsible Technology and offers bible texts that support those norms. That these ideas from Responsible Technology are still in play after all these years is pleasing evidence that what we have been teaching here at Dordt all along is still considered important by others–still on the cutting edge.

4. We’re in it as Christ’s disciples
That’s our contemporary response
There were a number of papers at CEEC on what it means to be an engineer and a disciple of Christ. I’ve already mentioned the paper by Dr. Jordan, “Engineering as a Mission.” There were several other papers on the general topic of how engineering work can help spread the gospel, or assist other missionaries in spreading the gospel. This theme came up in maybe one-quarter of all the papers presented. Certainly that is an important reason to be an engineer. The more I think about problems such as the depletion and pollution of earth’s resources, the more clear it seems that there is little reason to care about what happens to the earth unless you have respect for it as belonging to God and entrusted to us. The Christian faith is unique in providing this perspective, although many Christians act sinfully anyway. Here at Dordt College we see engineering as one way of responding to God’s call to bring peace and shalom on earth.

Just as we can “worship our cars” when we wash and wax them and take excessive pride in them, our engineering can be good or bad worship in response to the call of our Lord to care for creation.

Summary
While attending this conference, I got to thinking, “what progress have we in the Christian engineering community made in engineering education?” Dordt College has been offering a bachelor’s degree in engineering since 1983, the year of our first B.S.E. graduating class. That’s a quarter century ago now. Surely we must have figured a few things out in that time span. The CEEC has been an important place where we work communally on figuring out how best to plan our curriculum. Indeed, over the last quarter century we have made the four points mentioned above fundamental to our engineering curriculum here at Dordt College. These make a Dordt College Engineering degree different from a state university degree in ways that Christians can appreciate.

P.S. If you are interested in reading entire papers, the complete Proceedings of the 2008 CEEC is available. And remember—you found out about it here at Dordt College!

Grand Challenges

PittsburghThis summer I attended two conferences. The first was the American Society for Engineering Education’s Annual Conference (ASEE Annual Conference), held in Pittsburgh (pictured) during the last full week of June. The second was the Christian Engineering Educators Conference (CEEC) held at Geneva College in the days following the ASEE Annual Conference. In this blog posting, I’ll report my impressions of the ASEE Annual Conference. In the next I’ll report on the CEEC.

The one overwhelming theme I heard at the ASEE Annual Conference is that engineering graduates must be prepared for new and grand challenges. Due to globalization, many jobs can be done anywhere in the world. Already manufacturing jobs are distributed according to world-wide labor costs and infrastructure availability. This will soon be happening with many more jobs, including engineering jobs. But location still matters. There is synergy between colleges, small enterprise businesses, and venture capital networks. These personal relationships that cannot be well-maintained over long distances will always be meaningful. It struck me that these local relationships exist on the basis of shared worldviews, although that concept was not voiced by any at the conference.

Another theme heard was that innovation is found at the boundaries. Making things smaller, lighter, faster, or conversely, bigger, stronger, more durable, etc. is what is difficult and thus valuable. Increasingly, these innovations tread over traditional boundaries. For example, it was once thought that, scientists discovered a new theory, enigneers applied the new theory, and business manufactured and marketed the resulting product. The present situation is much more complicated. In particular, engineers are becoming generalists, being involved in basic science (discovery) and in manufacturing techniques, etc.

A final theme was the number of references I heard to the National Academy of Engineering’s “Grand Challenges Committee.” On February 15, 2008 this committee made the following recommendations and called them, “Grand Challenges” for modern government.

  • Make Solar Energy Economical
  • Provide Energy from Fusion
  • Develop Carbon Sequestration
  • Manage the Nitrogen Cycle
  • Provide Access to Clean Water
  • Engineer Better Medicines
  • Advance Heath Informatics
  • Secure Cyberspace
  • Prevent Nuclear Terror
  • Restore and Improve Urban Infrastructure
  • Reverse Engineer the Brain
  • Enhance Virtual Reality
  • Advance Personalized Learning
  • Engineer the Tools of Scientific Discovery

These are what engineers are currently thinking about. I was impressed at the volume of the call for broadly educated engineers who understand science, economics, marketing, government, and more.

By the way, the slides of the main plenary of the conference, given by Dr. Charles M. Vest, President of the National Academy of Engineering, are available online. You will find the same themes that I just reported on in those slides.

In my next blog post, I’ll write about the CEEC. At the ASEE Annual Conference we heard about the challenges, but at the CEEC, we discussed answers for the “so what?” questions.

This is Exciting: Nobody Noticed Nothin’

Here’s an interesting phenomenon. Electricity provides essential services that we hardly think about. Electricity is just there for us to use. Nobody notices how reliable this is unless you ask, or unless there is a power failure—something that is quite rare here in the U.S.A. That’s a testament to excellent engineering and a stable social environment.This summer Dordt College is upgrading the electrical service in various places on campus. The panel shown at the top right will serve the computer center. Power arrives at this panel through a transformer that is connected to a main distribution line from the utility company. Thus the computer center will now have a more direct, hence more reliable source of main power. Previously the computer center was just another branch on a system that was at maximum capacity serving a number of buildings. Any serious problem in any of those buildings could have taken the whole branch down, including the computer center. (The computer center also has a battery backup, but reliable main power is also important.)On Wednesday, May 21 at 5:30 PM when the new panel (top right photo) was energized, and later when the old electrical supply was shut down and disconnected, probably nobody on campus noticed a thing, but a good thing had happened. Power On!
A new panel is energized
New Panels
New Panels power Network Equipment
Equipment Racks
Network equipment now powered from the new panels

We do our engineering in response to our desire to serve our Creator. Being made in his image, we strive for perfection and in this case, reliable electrical power and a reliable campus computer network. But most people just don’t notice. The lack of notice for the design and world-class quality of good services provided sometimes frustrates engineers and technicians. But in another sense, the lack of notice is a high complement. Still, we ought to notice and appreciate. In this case, thanks go to our Director of Physical Plant, Stan Oordt, for noticing the need for this upgrade and coordinating the planning for it, and to all the technicians who worked on the project.

I’ll make a corny analogy here. Just like we are used to electricity (and computer networks and telephone systems and running water and any other number of services), we are also used to the loving care of our Lord. So used to it that we don’t notice it. For example, read Hebrews 1:3,

“The Son is the radiance of God’s glory and the exact representation of his being, sustaining all things by his powerful word.”

Did you notice the word, “sustaining?” I have a tendency to read over phrases like this without quite catching on to the fullness of what is written. The literal meaning is that if the Lord stops “sustaining all things” then the whole world will cease to exist. We ought to take notice of all that our Lord provides!

Pull the plug on the TV network and the show ceases to exist. Pull the plug on the God of the Bible (if you could) and. . .

It’s H1-B Visa Day—No Joke

visaEngineering and computer scientists are in such demand that some expect the annual quota of H1-B visas for workers in these categories will be filled in one day according to the Washington Post. This is really no joke, it is simply the case that the government runs an annual lottery for these oversubscribed visas on April 1 each year.

We feel the demand for engineers and computer scientists here at Dordt College too. In engineering and computer science our graduating students of May, 2007, were 100% placed “in major.” Most of these students accepted offers for work or graduate school prior to graduation. I feel like I could have placed each of my advisees three times over and still there would have been job openings available. This year we see the same demand again. The demand is that strong, both locally in the Siouxland Area (Northwest Iowa, Southwest Minnesota Southeast South Dakota, and Northeast Nebraska) and in much of North America.

How long can this good news last? In the years from 2006 to 2016 the U.S. Bureau of Labor Statistics predicts that the employment of network, systems and communications analysts will grow about 55%, employment of computer software engineers will grow about 45%, and employment in “professional, scientific, and technical services” will grow by about 29%. These are among the fastest growing areas of the economy. More analysis of the BLS report linked above has been done by the IEEE, which finds that “Eight of the top 30 occupations by growth rate are in engineering and computer science specialties.” With statistics like that, not only should there be jobs available four years from now, there should be good long-term opportunities for timely promotion after graduation to management and technical service jobs that are above the entry levels.

Nobody can predict the future and times may change, but a least for now, Dordt’s graduates are in high demand and the forecasts are favorable in spite of the banking industry’s current woes.

Update, Saturday, April 5, 2008

Now HiringYesterday evening a local TV station ran a news story on the topic of the local job market and the prospects for students looking for summer jobs. To quote from the story, “. . .we have more summer job opportunities than ever.” You can read the transcript and view the video here. The story does not specifically mention engineering internships, but business are recruiting Dordt’s engineering students just as much or more than they did in the past. (”Keloland” is the TV station’s trade name for the four state area of South Dakota, Southwest Minnesota, Northwest Iowa, and and Northeast Nebraska, the area served by this station’s signal. The station’s call letters are “KELO.” )

Pray With Us for Healing

Charles & Pam AdamsSunday afternoon, February 17, Charles and Pam Adams were seriously injured in a car accident. Charlie is Dean of the Natural Sciences here at Dordt and a member of our engineering department. Pam is a member of our education department. They were both transported from the scene by helicopter to Avera McKennan Hospital in Sioux Falls. A third person, the driver of a pickup truck also was injured in the accident, but not so seriously.
As I write this four days after the accident Charlie and Pam remain in critical condition with serious head injuries. Please pray with us for their healing.

Charlie enjoys doing “Plumblines” for KDCR Radio. I thought you might be interested in a few that deal with our human condition.

David and Helmut

The Sanctity of Human Life

How We Come to Know Our Misery

Stark Contrasts

Entertainment and the Present Age

You can follow the progress of Charlie and Pam on a CaringBridge web page. A news story on the accident is also available.

Update, March 31, 2008

Charlie and Pam are both recovering, although due to their serious injuries, recovery is a slow process for each of them. The engineering and education departments are making plans to have others teach their courses in the coming fall semester (Fall 2008) in case they will not yet be ready to return to their offices here at Dordt. Charlie was scheduled to teach two courses. The other faculty in the engineering department will be able to take both of those courses up by giving up some non-engineering courses that had previously been taught by engineering faculty. The education department is also making plans to cover Pam’s courses. Please continue your prayers for Charlie and Pam’s recovery, for strength for their families, and for the Dordt Community as we now work to maintain the continuity and strength of the programs and initiatives that Charlie and Pam have been so vitally engaged in.

C is for “Embedded Systems”

In Dordt’s EGR 304, Embedded Computer Systems course we use a lot of assembly language since we desire detailed control of the hardware. When a higher level language is useful, we like the C language. Many people who are used to writing in higher level languages question this choice. Why not use Java for example? Indeed, Java is generally the first choice for teaching programming to new students.

Some say that the choice of language is a “religious choice. ” That carries a number of connotations. Sometimes what is meant is that a language embodies some very important concept(s) which will color all your programming in that language. Thus the choice of a programming language is so fundamental as to be like a religious choice. In this perspective the choice for teaching the Java language first is founded on having a high regard for object-oriented, concurrent, and structured programs. Those are the underlying “religious” principles of Java. Once you have chosen Java as the language, you can’t help but write object-oriented, concurrent, and structured code, even if you don’t really know what you are doing! (I’m not claiming that a choice for Java will automatically help you write good object-oriented, concurrent, and structured code.)

When you are programming for an embedded system, object-oriented programming, concurrency, and structure are not everything nor even dominant concerns, thus Java might not be (probably is not) the best choice. Instead detailed control of the hardware and the timing of execution is needed. Thus we use the C language when high-level code is needed.

Recently however two Professors Emeritus who now preside over a company called “AdaCore” have been a few voices calling for giving students a wider introduction to programming in general, including more of the C language too. In a nutshell the argument is based on giving students fundamental understanding of programming methods, rather than relying on the syntax of a particular language to enforce the fundamental methods. A recent article in CrossTalk is a good case in point. Here’s a quotation from the conclusion of this article:

A well-rounded CS curriculum will include an advanced course in programming languages that covers a wide variety of languages, chosen to broaden the understanding of the programming process, rather than to build a résumé in perceived hot languages. . . .

When you step into a plane, you are putting your life in the hands of software which had better be totally reliable. As a computer scientist, you should have some knowledge of how this level of reliability is achieved. In this day and age, the fear of terrorist cyber attacks have given a new urgency to the building of software that is not only bug free, but is also immune from malicious attack. Such high-security software relies even more extensively on formal methodologies, and our students need to be prepared for this new world.

Senior Projects, 2008

observatory
Photo: Professor Allen with the observatory telescope.

Each fall our senior students select projects to work on. The list for this year is close to finalized now. Here’s what’s happening:

Ethanol from Sweet Sorghum
This project, funded from the Iowa Energy Center, has a goal of developing a farm-scale system to produce ethanol to operate farm equipment. You can read more about this project here. There are two project teams of four students each, one working on distillation and the other on fermentation.

Observatory Roof Positioner
Two students are working on a project to motorize the rotation of Dordt’s observatory dome so that it automatically tracks the position of the telescope. (When a person moves the telescope the dome will automatically rotate as needed). Update: The observatory has a web page.

TMF Moldova Aquaponics System
This project, involving five students, seeks to provide a way to grow fish in a farming environment away from rivers and lakes. It is being done in cooperation with Professor Abe Scheaffer of Northwestern College in Orange City, Iowa. (TMF stands for “Teach a Man to Fish”. )

Microphone Positioning System
Two students plan to design a system to allow microphones to be suspended in almost any position in a large auditorium without sending people out on catwalks or lifts to hang them. Instead a few motors and thin cables will be used to raise, lower, and move microphones by remote control as needed for different events.

Remember 10/31/1517

95 Thesis
The text of the above in the original Latin, or in English

In honor of Reformation Day, let me briefly list the “five solas” that emerged from the reformation.

Sola scriptura (by scripture alone)
Sola fide (by faith alone)
Sola gratia (by grace alone)
Solus Chrstus (Christ alone)
Soli Deo gloria (glory to God alone)

Dordt College has chosen “Soli Deo gloria” as the campus motto, but of course we also recognize the other solas. Consider for just one small example my previous blog entry, “Ee to the Pie Eye Plus One Equals Zero.” To which I say, “Soli Deo Gloria!”

Many bloggers are remembering 10/31/1517. For a sampling of what others are writing, click here.

Ee to the Pie Eye Plus One Equals Zero

euler's formula

In my Differential Equations class (MATH 204) we end up working with complex numbers in connection with underdamped second order systems. We just got to that part of the course this week. Most students have seen complex numbers in a high-school math course or elsewhere, but a refresher is helpful. Although complex numbers are just incidental to the main topic (second order underdamped differential equations), it includes some really interesting equations, like the one above. The equation is a consequence of “Euler’s Formula.” (”Euler” is pronounced “oi’-ler.”) The equation above ties five remarkably important numbers into one relationship, which makes it very beautiful.

1.) The number e is the base of the natural logarithms. The advantages of using natural logarithms over base ten logarithms become apparent when you study calculus, or differential equations. In particular, the derivative of f(x) = ex is the function itself, which is a very useful property. (The number e is about
2.71828. . . . It is irrational. As a decimal number it goes on forever with no repeating pattern.)
2.) The number pi is of course the ratio of a circle’s circumference to its diameter. (The number pi is about 3.14159. . . . It is also irrational.)

3.) The number i is the “imaginary number.” It has the property that
i2 = –1.

4.) The number 1 is the multiplicative identity.

5.) The number 0 is the additive identity.

All five of these numbers have interesting histories. The proof of Euler’s Formula goes beyond a blog like this, but again, includes beautiful relationships. When we say, “God Created the heavens and the Earth” we need to remember that these relationships of remarkable complexity, which we have been able to model in mathematical formulae, are part of his general revelation to us. By doing mathematics like this, just for the sake of trying to understand what we observe in the creation, we get a closer and more meaningful understanding of our Creator.