Posts Tagged ‘number’

Credit card’s wide range of technologies

Need to rebuilding credit cards? Even my boss has asked how to rebuild my credit. For first, currently there is a wide range of technologies available for credit cards. The traditional one is the magnetic stripe. However, it is extending the credit card microchip. This technology, developed by Roland Moreno, in which an electronic circuit integrated into the card performs most of the controls on its use, offers more security to the user and the issuing bank: the microchip integrated electronic protection devices that prevent their rape or unauthorized reading of the information it contains.

The first six digits of the credit card (including the initial digit MII) are known as the Issuer Identification Number (IIN). These identify the institution that issued the card to the cardholder. The rest of the number is assigned by the issuer. Cards are issued by the issuer through a broadcast network. The length of the card number is the number of digits. Many credit card issuers to print the first four digits of your card IIN, just below where the number is raised, as an added security measure.

Credit card establish the ability to compete in the global market. When paying by card at the trade, the collector usually required identification (personal identification, driver’s license, etc.) and requires the signature of the note or voucher to prove that you own the card. There are some exceptions where it is not required to sign the receipt, this system is called “authorized without signature” and is often used in shops with large crowds, such as cinemas, fast food restaurants and similar places. In some countries requested the entry of a PIN to authorize purchases in person.

High Performance and Exceptionally Valuable Celazole Enginee

Celazole PBI (Polybenzimidazole) is an impressively high performing engineering plastic, offering the highest mechanical properties compared to any other unfilled thermoplastic over 400° F. It is an ideal plastic for elevated heat bushings, valve seats, and connectors. This material is very hard and has amazing ultrasonic transparency, making it a superb option for probe tip lenses in ultrasonic measuring equipment and other similar parts.

Also referred to as Duratron PBI, Celazole is an unreinforced material that is exceptionally “clean” when it comes to ionic impurity, and it doesn’t outgas, with the exception of water. It is a superior thermal insulator. While other plastics in melt stick to other materials, this does not happen with polybenzimidazole, as such it makes it ideal for a number of applications.

Examples of applications that Celazole is commonly used for include, but are not necessarily limited to:

  • Seals and wear surfaces
  • Valve and pump seats
  • Handling parts and fixtures for plastics and glass manufacturing
  • Replacement for metal for aerospace components
  • Structural and wear parts for manufacturing involving Semiconductor and Electronics

High performance engineering machinable shapes, such as Celazole, are perfect design starting points, lessen weight, and expand the length of time before maintenance or replacement is required. This reduces the overall expense though the increase in process uptime, making this innovative plastic exceptionally valuable.

Statistics and the recency and place of statistics

The scope of statistics and the recency and place of statistics  in the school curriculum must be considered when discussing the beliefs of teachers involved in statistics education. These beliefs may be very different according to the age and stage of their students. Teachers also have a variety of prior life and academic experience. Some may have formally studied Statistics problems at school and some may not; some may have taken a course in Statistics help as part of their academic teacher training and others may not. For those who have formally studied statistics, their views as a teacher may be closely aligned to their views as a student, especially if they have not been teaching for very long. If, on the other hand, some Statistics tutor/teachers’ encounters with Statistics questions and Statistics answers have been within other disciplines or in everyday life situations then this experience may inform their belief framework. Finally, even if they have completed a statistics course in their pre-service training, the resulting beliefs may vary because of the relative emphases on theoretical statistics, applied statistics, and statistics education issues within the course.  Nowadays  free Statistics help is easily to find on the internet.

With this background in mind, there are a number of domains in which beliefs seem to be significant for teachers and the teaching of statistics in schools. In 1997, Gal et al. proposed some key areas for investigation, such as what teachers believe about statistics itself, the relationship between mathematics and statistics, the place of statistics in the curriculum, what statistics is important for students to learn, and how students learn statistics. The sections that follow examine these questions and some results and speculations will be presented. Shaughnessy (2007, p. 1001), however, points out that despite the years since Gal and colleagues proposed their questions, and despite a reiterated call for work in the area by Batanero, Garfield, Ottaviani, and Truran (2000), very little work has been done. The surveys by McLeod (1992), on students’ beliefs in mathematics more generally, and by Thompson (1992) and Philipp (2007) on teachers’ beliefs, give insights into possible issues, but statistics education is absent from their considerations. There were only a handful of papers on the topic presented at the ICMI/IASE conference in 2008, and what little has been done involves  case studies and/or small or convenience samples. Consequently, results about both teachers’ beliefs in mathematics education and tertiary students’ beliefs in statistics education may provide grounds for speculation about teachers and statistics education. Another section will consider influences on and impacts of beliefs, and belief change.

Algebra, definitions

Algebra is the branch of mathematics  concerning the study of the rules of operations and relations, and the constructions and concepts arising from them, including terms, polynomials, equations  and algebraic structures. Together with geometry, analysis, topology, combinatorics, and number theory, algebra is one of the main branches of pure mathematics.

The part of algebra called elementary algebra is often part of the curriculum in secondary education and introduces the concept of variables representing numbers (Algebra 1; find Algebra 1 Help and Algebra 1 Answers) . Statements based on these variables are manipulated using the rules of operations that apply to numbers, such as addition. This can be done for a variety of reasons, including equation solving. Algebra is much broader than elementary algebra and studies what happens when different rules of operations are used and when operations are devised for things other than numbers(Algebra 2; find Algebra 2 Help and Algebra 2 Answers). Addition and multiplication can be generalized and their precise definitions lead to structures such as groups, rings and fields.

Broad field

Indeed, a degree in electrical engineering can open many doors, in part because electrical engineering is so broad. Electrical engineers have taken on many tasks that you might expect people with other technical degrees to do. Semiconductor processing, for example, is highly populated by electrical engineers, but its basis is in physics and chemistry. Other areas include optics (as applied to communications), aerospace engineering, and even life sciences. “A lot of people don’t realize that a lot of biomedical devices are actually electrical devices,” noted Georgia Tech’s May.

Engineering jobs also cut across technical disciplines. More and more, mechanical, chemical, and biomedical engineers use electronics to measure a product’s performance. “Who says you’re not going to do test and measurement on a chemical process for drug manufacturing?” asked Looft. “That’s a huge area. And you better know a little bit about chemical processing when you go into that job.”

Some people with engineering degrees move out of engineering jobs but stay in their respective industries by moving into sales, marketing, and management (a few even become editors covering the industries from which they came). Others move into fields such as law and medicine. Law firms, looking for patent lawyers with technical backgrounds, may hire engineers or engineering graduates and pay for law school.

Those who choose to enter the engineering work force may find that they need skills beyond math, science, engineering basics, and problem solving. We asked the participants what additional skills employers now look for in engineering graduates. While we received some differing answers, everyone agreed that communications skills sit atop the list.

No longer is it enough to design circuits and get test results. You must communicate those results through written reports and presentations. Georgia Tech’s Williams noted that the university has integrated writing of technical documents into several courses, which UCSB’s Long echoed. WPI has even created an interdisciplinary major or double major in technical writing.

While schools have responded to employers looking for better communications skills, some in academia remain skeptical. One such person is Professor John Orr of WPI. “The standard example is if you hear an after dinner speech from the VP of company xyz, [he or she] will describe that employers need graduates with good communications skills, good teamwork skills, and some global experience. But when hiring managers come to campus, they look for skills such as experience with the latest Cadence software release. They’re looking for engineers who can be productive from day one.”

Regardless of whether communication courses are included, it’s becoming virtually impossible for schools to provide all of the required engineering skills at the undergraduate level. In fact, some people have begun to question if you should be able to enter the engineering work force with just a bachelor’s degree. Employers are looking more and more for graduates with master’s degrees, and the number of master’s degrees relative to bachelor’s degrees has risen in the past 30 years (Figure 1). (continued)

At the same time, the number of PhDs has remained relatively flat. During the last business downturn, companies may have scaled back their research budgets, relying on universities to do the work. “There’s a lot less research going on in industry than there used to be,” said UCSB’s Long. “Most companies have decimated their research labs.” Long argued that companies are looking for fewer PhDs than they did 10 or 15 years ago because they don’t have the facilities and don’t want to pay the higher salaries.

In recent years, industry has become more involved with academia. That’s good for the most part, as long as industry lets the teachers teach. Often, companies sponsor student projects or contribute to the funding of research labs. Students benefit from having worked on real-world projects and by making industry contacts, which can lead to employment upon graduation. Employers benefit because they can hire graduates with practical experience.

Overall, industry involvement in projects is welcome, because the companies provide equipment, materials, and sometimes funds for student projects. “If they’re paying for a project, then they should have the say over the project,” said WPI’s Looft. “But it can get too involved. I have companies that want to tell us what we’re going to do, educationally.”

Drexel’s Kam doesn’t agree. “I’m sure that there are horror stories here and there of companies who donated the equipment and wanted to control the curriculum,” he said. “But I wouldn’t call it a trend nor would I say this is widespread.” Georgia Tech’s May agreed that a few companies want too much involvement, but he doesn’t think it’s excessive. Companies are, after all, stakeholders in the graduates that these universities produce.

Looft said that companies go over the line when they say “you didn’t get it done” meaning that a student project didn’t produce a marketable product. When that occurs, he reminds companies that a student project is an educational endeavor that may not produce a working product.

Kam takes a different approach. He argued that companies need to get more involved in the educational process. “Industry is absent from the accreditation process,” he said. He wants to see greater participation from industry so universities can produce the engineers best qualified to keep companies competitive.

Whether you think the world has too many or too few electrical engineers, you’ll probably agree that engineers make an impact on people’s lives every day. Engineering has proven to be a satisfying career for many. Your work makes a difference in the world. Now, go out and tell someone how engineers contribute to society. I am sure many engineers proud to wear lanyards around their neck about their company.

The future of engineering

And that future resides in the young men and women considering technical careers, their teachers and mentors, and the industry leaders who work with the academic community.

Electrical engineering can be a rewarding career. You learn how things work, you solve problems, and you use your knowledge to create products that enhance—and even save—lives. The field changes rapidly, providing new opportunities for engineers to grow professionally, be creative, and make a difference in the world. For these and other reasons, many engineers wouldn’t dream of doing anything else.

The engineering profession in the US, however, is at a crossroads. New technologies offer the promise of rewarding careers, and there are infinite products yet to invent. But despite these limitless opportunities, enrollment in engineering programs at American universities is flat at best.

The numbers speak for themselves. Figure 1 shows the number of US electrical and computer engineering (ECE) degrees earned from 1971 through 2003. From the late 1970s though the 1980s, ECE degrees rose steadily, and salaries went right along with them as employers snatched every ECE graduate in sight. By the 1990s, ECE degrees dropped steadily.

To find out why people choose—or do not choose—engineering as a career, what employers look for, and industry’s role in engineering education, we spoke with professors, students, and professionals.

From our interviews, we found numerous reasons why young people enter engineering, the most prominent being that they already know an engineer, usually a parent or relative. Knowing someone in the field gives young people the introduction they need to pursue engineering as a career. Furthermore, teachers and shop courses may pique someone’s interest in engineering. Conversely, many bright students never study engineering because they don’t know anything about what engineers do.

 engineering
Figure 1. Electrical and computer engineering degrees rose in the 1980s and dropped through the 1990s, with master’s degrees becoming a larger portion of the total.

choose your major

 I was recently in the Student Union at Boston University chatting with a couple of students about their majors and the school.  Most BU students seem to be nice, but these two were a bit snobby.  Bad seeds, I guess.  During the conversation, they mentioned that they were majoring “Nutrition”.  I raised my eyebrow at the time, but didn’t think too much about it.

It wasn’t until later that I realized what had struck me: Boston University is one of the most expensive schools in the country.  If you factor in room and board, it rings to the tune of $42,000 per year (2005/2006), or $170,000 total!  Boston is also an expensive city to live in, and many students take out substantially more in loans just to cover normal, nonacademic expenses.  Therefore, we can assume the total bill for four years to be in excess of $200,000.  Even if one pays cash, keep in mind that the cash growth rate is similar to the loan money if placed in an appropriate security.  A person taking out a loan owes a similar amount of money to the cash growth that’s been lost over time.

Now college students tend to be optimistic, which is a good thing, but occassionally there needs to be a dose of reality (aka ‘life’).

REALITY: Nutrionists earn somewhere between $35 and $53K per year.  Superficially, a student might think, “well, it will only take me 4 years to pay back that $200K loan as a nutritionist/dietitian”.  Unfortunately, there’s a few things he or she might be forgetting: Number 1 is taxes , which will walk away with about 25% of our nutritionists’ salaries almost right off the top.  The other things generally unaccounted for are:

2.  Living Costs (Food, housing, insurance, automotive). 
3.  Interest on the loan, in addition to the loan itself. 
4.  Job market and availability of employment.

Let’s continue to use our Nutritionists by assuming that our two friends have no problem finding a job, and immediately land an average salary of $39,000.  Let’s also suppose that they suddenly learn how to be frugal and keep costs down.  In Boston, their favorite city, they choose modest housing and utility expenses, which account for $1000 per month, or $12,000 per year (Boston housing can range anywhere from $1000-$3000/mo).  After Federal taxes for their tax bracket, our two nutritionists are left with only about $20K per year of profit.  “Yay!” they exclaim to each other, “We can pay off our $200,000 student loans in only 10 years!” Then they go out for dinner and subtract an extra $3K from their salary for food and other expenses.  Suppose they devote all 17K each year to paying off the loan — with interest (about 6.8%) it will take almost *25 YEARS* to pay off the loan.  The amount that the two nutritionists owe grows every year that it is not paid off, so that in 25 years, they pay almost $200,000 EXTRA just in interest. 

Lets be practical.  Nobody devotes 100% of their income and lives like a pauper to pay off a loan unless they owe it to the mafia or a loan shark.  When in possession of an extra $20K, most people find ways to spend it on marriage, a house, or other luxuries.

If you plan to major in Nutrition or some other mostly low-salary field, it may be reasonable to attend a small college or state school with a total cost of $40,000 (or if you have substantial scholarships), but certainly not one that costs $200,000.  You do not want the growth on the interest to exceed your salary.

It cannot possibly be stressed enough how important it is to choose a major with an aggregate earning power higher than the cost of tuition.  If you pay more for school than you can possibly earn, you are wasting money on some “play time” and you are saddling yourself and your family with a debt that will last for the rest of your lives.