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bavcyc

231 karma · joined March 30, 2008

Electrical Engineer with background in power (low, medium and high voltage including SCADA, troubleshooting and design) and computers (testing, development, logistics); not to mention project management.

Currently setting up development system for applications involving project management and learning.

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bavcyc··on Ask HN: Is membership to the BCS worth while?
Regarding Chartered Engineer, i.e. US Professional Engineer; it can be helpful in certain industries but my home state (for example) has exceptions for engineers working in manufacturing of products such that a software/hardware developer doesn't need the license.
bavcyc··on Ask HN: How to negotiate a job offer without any counter offers?
Recruiters can ask for anything they want, but you don't have to give it to them.

Some places will match salary but otherwise bring you in at a lower level.

You could explain that the market research that you have done shows the offer is about $10k lower than the typical salary.

Also reinforce the skills that you bring to the job.

bavcyc··on LinkedIn is not using email contacts to find people who have an account already
I had a traditional, i.e. one that wanted salary history and other non-relevant information, recruiter tell me during a discussion that person x at linkedin says you should provide this information.

This is when I realized that linkedin in not about professional relationship but about recruiting folks and that recruiters will find it most useful.

As I can find a job without a recruiter, linkedin's value to me is close to zero.

bavcyc··on Sorry, Writers, But I'm Siding With Google's Robots
use your favorite search engine with the article title to access it.
bavcyc··on Dude, Don't Get a Dell 4K monitor
I was thinking about ordering and I need accurate color.

Now I'll wait until the color is accurate before ordering the 4k monitor.

Thanks for posting this article.

bavcyc··on A Solar Boom So Successful, It's Been Halted
Capacitors are typically used for power factor and voltage correction. A minor correction on what theysayso wrote. If the line is long enough, voltage regulators are used to increase the voltage at a certain point.

Phasing for lines is checked by a rotation meter, it is either A-B-C or A-C-B. Get it wrong and your motors spin backwards.

bavcyc··on A Solar Boom So Successful, It's Been Halted
I think the US uses 10% spinning reserve for generation (might be a NERC requirement?). Some plants (gas and certain hydro) have fast response times. Others (coal, nuke?) have a longer response time.

The biggest issue with wind is that the wind gusts so power output is variable.

As regards to frequency until your system has enough mass to influence the rest of the grid, the grid frequency is dominate. Even a 2,000 MW generation facility will not influence the grid frequency much, which is why it is important to sync to the grid as you connect.

bavcyc··on A Solar Boom So Successful, It's Been Halted
Typical transmission design is a loop for redundancy. Distribution lines will have loops, for the feeders, with an open point such that it is actually a radial system but one that can be fed from 2 substations/circuits. Laterals are the lines where there are no redundant circuits. The other option is networks, which are much more expensive but have much more redundancy.

Lateral design: typically a load curve is used to calculate the maximum load for each service point. The system is typically designed to handle close to that amount. If a house has a 200 A main breaker then it can use up to 160 A of current (unless the NEC changed since I did this type of work). Typically a house will never use 160 A even at peak load, but better safe than sorry so a 37.5 kVA transformer is probably used.

The power is designed to flow from upstream (substation) to downstream (point of service). The system protection (reclosers, fuses, circuit breakers, etc.) are designed to interrupt over-current from the downstream headed upstream. The exception to this is a network design where protection is designed to protect equipment in both directions. Network design does not happen much at the distribution level, although it is used in major cities.

If customer(s) are(is) adding power to the system then at a certain point you will have reverse power flow. And if the system is not designed for this, then bad things could happen and customers are not happy when the electric company causes damages. So the utilities want to be careful.

If the rate payers (customers) want a reliable system with the ability to feed power back onto the system then there will be a cost associated with it.

For the most part utilities have a monopoly granted by the state and are good at lobbying to protect their interests. What is best for the customer might not be best for the utility.

bavcyc··on Ask HN: Not getting anywhere in my major, make the switch to Computer Science?
The school I attended had Bioengineering which was more ag-bio engineering. It is something I'm looking at learning more about specifically the gene/biology coding aspects.

My $.02 is that you are in a good position to learn computer programming as it applies to sensors (ag/biology) and to learn how to process/mine/filter large data sets.

I'd talk with a professor or two in your major and see how many computer science classes you can substitute along with seeing what you can learn on your own.

bavcyc··on Wildfire threatening the power grid that supplies San Francisco
The SF water supply has some interesting politics:

https://www.baycitizen.org/news/water/raise-rent-hetch-hetch...

bavcyc··on Ask HN: Getting started with a web app
While I'm not intending to develop for a mobile app per se, I think I have to keep it in mind as I'm learning.

One question I have in that regard is how to make an app that is most useable for the widest audience?

bavcyc··on Ask HN: Getting started with a web app
Thanks. I'll look the sites over and see which one will work best. I'm sure I'll have more questions, but I'm glad to know that 'slack' is available.
bavcyc··on Ask HN: Getting started with a web app
I can perform system admin work and what I consider basic scripting. Today's task for instance is downloading debian 7, installing, adding beautiful soup and playing with it to obtain data for statistical analysis related to sports.

My biggest issue is that I have not played on machines that are remote site and having to learn the current best practices. It has been about 13 years since I configured Apache.

Digital Ocean sounds like it is worth looking into.

bavcyc··on I'm a new land surveyor. How do find the formulas for this table?
No you would not multiply the total cubic feet by 2 and divide by 54 to find the total cubic yards. If you multiply by 2 then you will throw your calculations off.

The table is figuring a cross sectional area then adding the next cross section area. At that stage it should divide by 2 to find the 'average' area for a section but it waits until the end to do this by dividing by 54 (or double the cubic feet in a cubic yard).

A1 = H1 x W1 A2 = H2 x W2 (A1 + A2) x L1 = 2V1 (approximate) A3 = H3 x W3 (A2 + A3) x L2 = 2V2 ... sum of volumes = 2V approximate volume = 2V / 54 = approximate cubic yards.

bavcyc··on Ask pg: why have hellbans become so widespread on HN?
I turned it on after reading this askHN and it was interesting, but I think I'm more thankful for not seeing a bunch of the dead links and comments.
bavcyc··on Interviewing for j-o-b: when to ask about "we own you" non-competes?
http://www.leginfo.ca.gov/cgi-bin/displaycode?section=lab...

and

have more information

bavcyc··on Interviewing for j-o-b: when to ask about "we own you" non-competes?
Certain state have laws which state that anything your create on your own time with your own equipment is yours regardless. I think CA is one of those states, but I have not researched this lately.

Never use company resources to do any of your personal work or personal communication.

bavcyc··on Ask HN: Do I need College?
Continue pursuing the degree part time until you are at a point where you can go full time. Especially look for courses that compliment what you are learning in the work place. There will be a point where you realize that continuing school part time will take another 5 years but if you enroll full time, you can graduate that year.

If you go to college, then run up the stairs as Paul Graham writes. If you take the hard courses, i.e. the ones that make you work and think, then you are better off regardless. If you enroll in classes to get grades then you are wasting your time.

College should prepare you for thinking critically and finding answers on your own once you are out in the 'real' world. The biggest issue is that you won't learn business skills that are useful, i.e. ones that help you work for yourself rather than an employer.

bavcyc··on Mac designer: Samsung phone fooled me
Look at the LG Prada, released late 2006 -early 2007, has/had a similar home screen to the screen shown in the article that was used for the patent.

http://en.wikipedia.org/wiki/LG_Prada

I think multiple paths have led to similar (not copied) phones.

bavcyc··on Mac designer: Samsung phone fooled me
I used the iPhone for 6 months (work phone) and purchased a Samsung model as a replacement (in the 2 weeks).

I'm not sure how you could confuse the 2 phones. The functionality of the two are different enough that confusing the two is difficult.

If the similarity is based on icons and using icons to open programs, wasn't this done at PARC? Or the original Mac? I'd think those are both prior art, or possibly even the Palm PDAs.

At this point I'm not sure which phone I like better, both tend to work which is my main requirement.

bavcyc··on Ask HN: Anyone have comments on Microsoft's BizSpark?
Thanks. I do not have specific questions at this time, it just seemed too good to be true.

If I was building a web application then I would avoid MSFT but using MSFT hardware is much easier than developing my own or hacking stuff to work with MSFT hardware.

bavcyc··on Ask HN: Do I need a regex book?
Regexes are a handy tool to know regardless of the language. And something I think is worth learning.

Mastering Regular Expressions is a good book to read as Mr. Friedl does a good (great?) job of explaining the pluses and minuses of regular expressions in a readable manner.

If all you want is how to use regular expressions then there are plenty of man pages and internet documents which provide examples that you can learn from without reading Mastering Regular Expressions.

You might look at the Ruby documentation to see how Ruby does things. And a quick search using Ruby regular expression provided this link: http://rubular.com/ which is a utility to test regexes. There are several other links immediately following this one which appear to be tutorial or information for what you are looking for.

bavcyc··on Charting the American Debt Crisis
No article on the US debt is going to be neutral.

Someone posted an interesting video the other day: http://www.kpcb.com/usainc/

The Heritage Foundation has a different take on it: http://blog.heritage.org/2011/07/28/the-truth-about-obamas-b...

Which shows that Obama is more to blame than Bush.

Situation is normal as each side is blaming the other side.

John Mauldin has a book called Endgame, which is worth reading through Interlibrary loan. It presents some interesting ideas.

Think we need a new super post that just allows everyone to post articles on who's responsible for the US debt underneath.

bavcyc··on Poll: What should be done about the endless repetition of stories?
Filter on URL would be the first step, if it is a duplicate URL submitted then point the submitter to that story.

Could also use recently, i.e. last week or 24 hours, to compare stories at submitted URLs such that if someone submits a story on G-man advert from a different site it is found or at least present to the submitter to check if their submission is a duplicate.

bavcyc··on How the Tea Party created the debt ceiling debacle
To believe that only 1 party or segment of 1 party is at fault is absurd. Someone posted an interesting video the other day: http://www.kpcb.com/usainc/

An alternative story to Fallow's is: http://blog.heritage.org/2011/07/28/the-truth-about-obamas-b...

Which shows that Obama is more to blame than Bush, which is different than what Fallow's used in his article. Situation is normal as each side is blaming the otherside.

I think if you look at the make up of congress when significant increases in deficits occurred, it might give a better indicator.

John Mauldin has a book called Endgame, which is worth reading through Interlibrary loan. It presents some interesting ideas.

But what it comes down to is that the US is acquiring debt faster than is recommended. It is possible to correct the issue, but not sure the political will is present to do so.

bavcyc··on Ask HN: Need some advice about school.
Thank you for the clarification on the diploma versus degree. U.S. refers to 2 year degree as Associate's degree, with diploma usually indicating a completed degree of any level. Always fun to find out ways English speaking countries use words differently.

Definitely pursue completing the degree, as you are almost done.

Find a way to make it interesting to you. Analyze how an assignment, or information, applies to a business.

If you can find an open source project to work on, then that could be fun. You could also start your own start up or start researching ways to make a start up successful.

Research start ups and find out how you can increase your 'value add' as you complete your degree. So you can hit the ground running once you do graduate.

bavcyc··on Ask HN: Need some advice about school.
I'm not sure what you mean by having a diploma and not a degree, typically those are equivalent.

If you have enough credits to get the diploma but have not satisfied the degree requirements, then that is a tougher decision. And it will depend on how much value you perceive in meeting the additional requirements, but as PG writes running up the stairs (take the harder path) usually has a bigger advantage.

That does not mean you can not work full time. Lots of distance education courses available. Check with your school and find out the rules/regulations in this area.

Also you can network while in school, possibly this can lead to a company/start up that will let you start work while you finish your schooling.

bavcyc··on Ask HN: How do you manage projects
Make a list of the features.

Now sort it from easy to hard to complete including estimated time to complete.

Figure out which features are need to be completed before other features.

Now summarize that data in an easy to digest form, one method is to map it onto the calendar showing this is how long it is going to take to reach a point.

Add the additional projects to the calendar.

At this point, I'd schedule a meeting with the CEO and show him how much work there is to do based on the 16 hours 7 days a week that you are working. I'd ask him which items can slip to a later date when another item is added to the project or there is a new project.

There are other solutions, but I'd keep it as non-confrontational as possible and show that you are wanting to accomplish the work.

bavcyc··on Ask HN: Accepted new job, when should I inform my current employer?
If you do not have an excellent relationship with your current employer, i.e. they know you are looking and are helping you to find another job by serving as references; then only give as much notice as you are comfortable being out of work. Do make sure that you have everything organized and ready for the next person.

If you have an excellent relationship then it won't matter since they will be happy for you and are aware you'll be leaving.

Do make sure you have the other job prior to giving notice.

bavcyc··on Daring Fireball: iPhone 4 Impressions and Observations
Al has higher conductivity than SS. I'd have to crunch numbers to see if it would make that much difference at cell phone frequencies (power budget). At 60 Hz, ACSR has most of the current in the Al not the steel from the skin effect.

SS has the advantage of strength over Al.

Possibly a SS exterior with Al inside.

edit: I cheated and glanced at the ARRL Handbook (2005) page 20.7 "The strongest wire suitable for antenna service is copperclad steel, also known as copperweld. The copper coating is necessary for RF service because steel is a relatively poor conductor."

Based on that I suspect a better conductor inside the SS or as part of the SS.

Further edit: using google, there are SS Yagi antennas so that is nothing new, not sure about other antenna types at this time. If Apple used SS and made a better antenna (larger?) then it might use less power than a smaller antenna using a better conductor.

last edit: SS whip antennas are also available, such that the material choice probably is not that big of deal as much as the design of the antenna itself.

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