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Posted on 9:43 PM by 4 8 15 16 23 42 and filed under


It is 22.56 pm and I've been trying to sleep for two hours. Why so early, you may ask. Because I've lied to myself and believed that I'd better wake up early and write my thesis.

This last past years, I've been alone with myself a quite whole lot more than before. I imagine one thought flowing to a stall sea - and slowly breaksdown the harmony. On one hand, I say to myself, you are the one who is different, you are the one who is promising. Do something, just not watch Youtube videos or stream previous shows you've already watched. Yet, there is this alter ego, maybe a secret identity, whose life goal is to constantly drown me down. It is maybe a mother figure, saying boy, don't worry - you'll work more tomorrow. Still it is hard to decide whether it is in fact an evil nemessis or a caring relative.

Can we say that, as in movies, do major periods in our lifes have themes? Primary school years: playing Power Rangers in recreation, naivite, simplicity. Middle school years: patience, waiting for it to finish. Highschool: peace, hope. College: Search of identity, trying to understand the dynamics. Master's: hope, patience, peace. PhD: Fall-down. Self-interrogation. Feeling of insufficiency. Desire for impact along with a feeling of incapability. What is next?


When are we honest with ourselves? When do we lie? If we put our self-protection mechanism on a side, would we still like what we saw? Why do we obsess on different things? And most importantly, why can't we control our thoughts?

Even if I know a particular way of thinking is flawed, I still can not stop it. Take this city obsession for example, I know that by fantasizing about different cities and not seeing any brightside on my current one, I am making a mistake of confusing fantasy with reality. When I dream about New York, I completely forget my earlier dreams about Austin. I know that this is hypocrite but why then I can't stop? Don't I know it well enough or does hope triumph experience?


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Posted on 8:45 AM by 4 8 15 16 23 42 and filed under


Hello my fellow followers,

You probably think I am dead. No offense but I thought you disappeared as well. For a while, I thought although this blog was highly popular in many circles, it was a miracle that Google Analytics would skip any sign of traffic. This lousy blog I created, tried to imitate from others obviously did not work. Still, I ask myself are my thoughts really worth expressing? Yes, is my answer for now. No, you don't have to read it - purely because I have to get these out of my system, sure it could be nice if it would help some other in anyways but that is not my concern.


When I first got excited by the idea of writing a blog, I was under the influence of some bloggers that I followed. This reflected to my initial lousy posts which were fun for a while, then I got bored and stopped completely. It was useful for me to combine ideas from various books and motivated me to summarize them while organizing the arguments in a more clear setting. Summarizing books required some work, but I think its was worth it. The blog did not have any purpose, still does not. This post - and I guess this blog so - is meant to help me, here it is its purpose.


I moved from my beloved Istanbul to the heart of Texas (not quite, Austin is not that much Texas) - to pursue a PhD degree. Moving to States was something I wanted for years as I come from a generation who grew up to have "Back to the future" as their favorite movie, and U2 as their favorite band. I guess I would feel more of a connection to country music in Tennessee, then eastern Turkish folk music. Don't get me wrong, I love the land I grew up and I feel connected to Istanbul more than anywhere but still being imposed to that much American culture makes you feel like an insider even when you are outside.


Still I got surprised when I came here. Not because I realized it is obligatory to use the word "like" at least 5 times in a sentence, or you say thanks to the bus driver when you get off ( at least in Austin). I was more surprised by my own emotions and my understanding of the culture surrounds me. I thought I knew everything about the culture, and most of the time my experiences affirmed my initial impressions. However, I  started to question more the lifestyle  Maybe I had read Ayn Rand so much, but I still respect the idea of self-made man. Yet, the reflections of this idea to the culture are complicated. In this country, people are not disfortunate, they are seen as losers. If you can't achieve something it implies that you are a failure. Here I am exaggerating a bit but on a cultural level pure rationalism rejects all super-naturalism which in turn generates a culture that lacks a sense of contentedness. If you knew me you would laugh your ass off, as I act like logic is a new religion. Still, before observing at first hand, I never thought I'd miss little nuances that my own culture (or Europe) has, and America doesn't. Or I am just really homesick..


The fact that America lacks some qualities that Europe (+ Turkey) has, does not mean I regret my choice of coming here or that it is a superficial culture. I have always been interested in other cultures especially western ones, which motivated me to learn french and italian. I adore those cultures, mostly like those people and would like to spend years in Rome or Paris. I have good grasp of both languages but in any case I felt like I would feel like an outsider in those countries. I felt like no matter how many calzones along with vino rosso I would never feel like an italian. Not that it is important to feel italian, I think what is important is the feeling of an outsider. Wouldn't it be exhausting after a while? Yet, I thought I would never feel that way in States - after all anyone can be an american. I would express myself without any worries and I was already imposed with americana. One other feeling I got was - this may be totally wrong but note the word feeling - Europe was for fun, not work. I really liked having camambert, but I thought I could have that later on after having achievements. Where would give me more opportunities? My answer was America. This was a country where I could be a millonaire if I create an iphone app that makes fart noises. Or I could build a new type of McDonalds that serves to only lactose-intolerant people. Pardon me for the irony, but I have always felt that if you are good, this land would give you most opportunities - and I think the same way today.


My ramblings will continue shortly..




















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Posted on 7:25 PM by 4 8 15 16 23 42 and filed under
Couple of notes from the debate:



THE TWO-PARTY SYSTEM IS MAKING AMERICA UNGOVERNABLE



I hope posting these would help me remember them:)


2-party system does not work
2 party system does not motivate young : 39% independent voters
Media does not help to propose any change
Parties impose certain ideas, do not allow flexibility to politicians
USA is built on the principle of competition: why not in politics?

2-party system works
 It works , brings stability
It still works, the problem is current environment not the current system
This is not a dictatorship, does not need social media to be changed there is always an alternative
Brought up the Obama movement



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Posted on 7:32 PM by 4 8 15 16 23 42 and filed under ,



Since this Blog is about stuff as the title shows( btw I really should consider major changes in this blog. Come on what’s a blog about stuff, how cheesy is thatJ ) , it’s time to dedicate this post to “stuff” itself.  Or, maybe to its story.

“The Story about Stuff” is a documentary about the production-consumption and disposal process of every item that we use in our lives. The narrator Annie Leonard, a former Greenpeace employee with a envorinanmental studies degree, is the one who introduces us this story about what goes wrong in our production-consumption cycle and how we can improve it.


The 20-minute documentary is definetly worth of watching( Animations rule!). Video looks nice persuasive but I wonder if that story is actually the right one?

Actually, there are many critiques to the Story, a quick research in Google and I found interesting results

First, start with the good news. The new school of thinking that Leonard suggest, are mostly accepted without any hesitations. In other words, there’s nothing wrong with  “Green Chemistry, Zero Waste, Closed Loop Production, Renewable Energy, Local living Economies”.

Whereas the arguments of Leonard seem to attract more opposite views. For example:
“Not everything about manufacturing is “toxic.” Make no mistake, I think there are plenty of dangerous chemicals in the things we produce, but you’re playing fast-and-loose with reality if you’re going to say that manufacturing is the simple practice of putting toxic chemicals onto stuff to produce toxic products.”
“ Annie Leonard raised the freak-out level: We dip our pillows in BFR (brominated flame retardants), a horribly toxic man-made chemical, and we sleep on them!
Not knowing anything about BFRs, I did some research on this. I found two things:
One, BFRs are used primarily in electronics and electronics plastics. Things like computer circuit boards, the plastic casing around a TV set, around the rubber sheaths encasing wires in a computer, that kind of thing. And the BFRs are chemically bonded to those components. That means they’re not flying into the air, we’re not breathing them in.
Two, I was unable to find any evidence of companies dipping pillows or pillowcases in BFRs before selling them.”
There is even an Alternate Story of Stuff video series. It critiques Story of Stuff, on Youtube.

From my point of view, something bugs  me. This video cries out  “WE ARE IN CRISIS!”, it reminds me this quote from Michael Chricton:


“The media did  not make extensive usage of terms such as crisis, cataclysm,plague or disaster. For example during  1980’s, the word crisis appeared in news reports about as often as the word budget. In addition prior to 1989, adjectives such as dire, unprecedented, dreaded were not common in television reports or newspaper headlines. But then it  all changed.
These terms started to become more and more common. The word catastrophe was used five times more often in 1995 than 1985. Its use doubled again by the year 2000. And the stories changed too. There was a heightened emphasis on fear, worry, danger, uncertainty, panic. “

Long word short, media sells catastrophe news and people buy it. That’s the thing that annoys me, I really can’t decide now. Does Anne Leonard really tells us the truth or sells some part of it?

I think the main problem about the Story of Stuff video is that, it lacks detail and explanation. I know, it's a full 20 minutes, but she needed to explain her points more. I guess she tought so, too. As of March 2010 the book of Story about Stuff is available. I hope this time we may really understand the story about stuff. 





Arda

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Posted on 4:36 PM by 4 8 15 16 23 42 and filed under

Again last semester, for my Statistical Inference Course I was supposed to perform Multiple Regression Analysis on a dataset. In this post, I will share my notes on finding the data and steps of the study and about software selection.

1.        Finding the Data:

At the beginning I thought  it’s a great oppurtunity to investigate Global Warming. In regression analysis, you try to explain one variable as the function of others and make inferences. So you have several variables namely predictor variables( the ones you use in prediction of the response variable) and one response variable( the one you are interested in).
Coming back to Global Warming example,  my initial idea was trying to predict temperature by using C02 level, deforrestation level etc. Why didn’t I do it? Maybe “searching for hours for these data and not finding as I wanted”  is the reason.
The challenging part in finding data was that for each different data the sources are different. You have to find different official data from different sources since they are not published together in most of the cases. I could find Temperature Data but I was close to finding CO2 but 2 more problems:

1.       There is need to organize the data / Time- Consuming + Time- Consuming+ Time- Consuming
2.       I needed more predictor variables (10 would be enough but I had only 2) since in the analysis you decide on whether to keep or omit some variables.

   So I gave up my idea on global warming which as a subject looked pretty interesting but finding data and organizing them seemed challenging thinking of the above problems. So what I did? Found a sample dataset.
Coming up with a data yourself, and organizing is not really the purpose of regression analysis. In most of the cases, you are supposed to apply regression techniques on a dataset, no matter what your dataset is.  Apparently there are statistics websites presenting datasets for statistical purposes. The great part about  that is they present you many sets and you can choose among them which one you are interested in.
http://lib.stat.cmu.edu/ is an example statistical website. (The one I found mydataset) The datasets presented here, are not made up to give nice results, instead they are taken from studies or research papers some time ago.
http://bus.utk.edu/Stat/DataMining/files.htm : This site also gives dataset which you may use for regression. I got the impression that Senic dataset is a very famous one and could be used without hesitation.
You may look at these websites also:

2.        Steps of Multiple Linear Regression Analysis


Test the Signifance of Regression : It’s a basic F test. You do test to check whether regression analysis is really helping you explain a significant amount of variance on the  response variable.   

Diagnostics and Remedial Measures  based on all predictor variables : Initially start with the full model where you put all your data. By looking at residual plots you decide whether assumptions below are violated or not, and if they are by transformations you try to correct them.
·         Multicolinearity Between Predictor Variables
·         Linearity of Error Terms
·         Constant Variance of Error Terms
·         Independence of Residuals
·         Normality of Residuals

Selection of Significant Predictor Variables: After you made sure that full model satisfies all the regression assumtions, in a whole set of available variables you take the ones which helps you analyze a  significant amount of variance on Y(response variable). You can either use Stepwise, Forward Selection or Backward Elimination in deciding which variables to include in your model.


 Diagnostics and Remedial Measures  based on Selected Predictor variables
·         Linearity of Error Terms              
·         Removing Outliers        
·         Constant Variance of Error Terms
·         Normality of Error Terms


Validation of the Model :  You initally save some of the observations and not include them in regression. Let’s say with 400 observations you calculated an apropriate regression line and  for  100 samples you look at how does your regression line fits.

3.       Which Software to Use:

Well, you can use many statistical softwares for regression but I guess  SPSS and Minitab are the most popular ones. I first started with SPSS thinking that it’s much more popular software and knowledge of Spss would be a plus because its widely used. At the beginning it looks simple, it is indeed but for some simple tasks Spss is just a waste of time.
For example you want to plot all the residual plots and copy them to Ms Word, Excel etc. , in Spss you have to copy manually each graph manually and it takes time. Editing Graphs,or plotting mutliple graphs in Spss is not easy either.
So I looked to Minitab and Result: Minitab Rules! You can plot variables against each other very easily and save them all in .jpg  files. Plus it seems to me that in Minitab you have more options in regression, so I would definitely suggest you to use Minitab. Also, trial version of Minitab  is available for 30 days( Way enough for regression projectJ ).  

I hope this blog post helps you in your analysis.

End of Course-Related Blog Post Series!!
{ at least for a while}

Arda
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Posted on 5:04 AM by 4 8 15 16 23 42 and filed under

Last semester I took IE 501- Linear Programming and Extensions Course. At the beginning I thought the ‘Extensions’ would mean solving large-scale Lp problems in different areas, it turned out that the term ‘extensions’ is in the sense that you dig in the theory of linear programming. The course focused mostly on simplex algorithm in a much deeper way.  In undergrad, you learn how to implement this algorithm but in graduate study you learn to combine linear algebra and simplex, thus you study simplex in a much wider way. It seems like having studied simplex before would be a plus for this course, interestingly it does not a make a significant difference, because you look at it in a very different perspective.

1. Coding Simplex in Matlab

For a term project we were supposed to code simplex in Matlab and solve almost 100 BIG instances (maybe I should say giant).  In other words, create a Solver like linprog of Matlab. Our objective was solve all instances with our solver, correctly and fastly possible. The project group with lowest average Cpu time in solving instances would get the highest grade.
Matlab is easy to learn and there are many tutorials and websites available in internet in which you can possible find answers to almost all matlab related questions. In many cases, I think Matlab Help is the most clear and comprehensive source.

Coding simplex algorithm is not very very hard to do but as you cover all assumptions( degeneracy, full rank, stardization) it gets challenging.  It’s better to write at first the most basic  form and that make additions or changes to the code afterwards.


George B. Dantzig (1914-2005), inventor of the simplex method

One of my major loss of time was to use zillions of functions in the Code. I don’t mean the Matlab Built-in functions or anything, it’s just I separated my code in parts (function optimalitycheck, function calculate_new_solution). The simplex code is not very long, and although using functions for different operations seem like a neat way in debugging etc., it actually caused me to look at every function when there is a problem with the code. Waste of Time! So long word short, I’ve used 3 functions in the main code: (1) initial feasible solution, (2) basis update, (3) minimum/maximum ratio test .

Since we wanted our code to solve instances fast, we used Matlab built-in functions (like find, min etc.), which perform better/faster than the for loops that you could write. But for speeding up the code, the first thing you should check for are the unnecessary for loops. Other than that, there are some tricks like using logical indexing, but focus on ‘for loops’, they are the killer ones of your code.

2.Finding an Initial Dual Feasible Solution

The Simplex algorithm has 2 major methods of reaching to optimality. Primal simplex and Dual Simplex Method. In both cases, you have to find an initial solution and than execute second phases of the algorithms and find optimality/infeasibility/unboundedness. For primal simplex method, finding a primal feasible basis/solution is easy. The easiest way is to adding artificial constraints and removing them from the basis, iteration by iteration. Internet is full of sources on primal phase 1 algorithm. Whereas, finding a dual-feasible solution is different.

I spent DAYS to search on how to find a dual-feasible (a basis which is not primal feasible and assures primal optimality). There are websites which explaines how to find a suitable basis for bounded simplex( in which there are upper and lower bounds on variables) but I couldn’t find a single source showing how to do it for standart simplex.

****

A little break.

(I type all the possible keywords to attract a similar drowning person to the answer)
Dual Feasible Initial Basis/ Feasible Dual Initial Basis/ Initial Feasible Dual Basis/ Initial Dual Feasible Basis/ Dual Feasible Initial Solution/ Feasible Dual Initial Solution / Initial Feasible Dual Solution / Initial Dual Feasible Solution / Basis For Dual Simplex/ Dual Simplex Initial Basis

Sorry for the break. The show continues…

****

So we used artificial constraint technique described by Bazaraa. (Books still have stuff not found in Internet)







This method consists of basically adding an artificial constraint(2) to the original problem in which a primal feasible basis is available(can be calculated via phase1 primal simplex) and extending the basis. Then after one primal simplex iteration, the basis becomes primal infeasible and dual feasible. Aloha!

Here is the pseudo code of the algorithm:



If pseudo code above seem complex to you, you can always check out Bazaraa’s textbook where this technique is described with a numerical example.

This method is criticized in literature since the algorithm performance depends on a value of M and also it necessitates problem to be in the standard form. Converting a problem in a non standard form to the standard form results in increase in both the number of variables and the constraints (That’s a major drawback!). Yet, efficient methods exist which can accomplish this conversion with the least increase in the problem, the problem still enlarges. Therefore, many sources offer a different method for initial solution. They mostly focus on bounded simplex method but that was out of scope for our project and seemed more difficult.

That method was the most practical to implement for our case.

Finally, some notes on solving the BIG instances with our algorithm. Ok, our algorithm was working perfect with small instances (the ones we could revise by looking at iterations when we are not too lazy/ or shortly TOWCRBLAIWANTL) but when it comes to Giant instances sometimes our code couldn’t find a solution. Since they are not TOWCRBLAIWANTL, we couldn’t possible look at all iterations and find out where it screws up. I guess, the bigger the problem’s size is, or the more there are multiplications, there comes rounding errors, which result in absurd results. Also we thought it can do with the epsilon value we assigned, but blaming Matlab could be a suitable thought alsoJ.

Anyways, I hope these information would help someone and you don’t waste your time like I did.

I’d be glad if you leave a comment if you find this post useful.

For that someone should read this post except me.
                  
                   For that this blog should be discoverable

                                     fprintf(‘Hear this Google!’);

                   end
end


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Posted on 4:50 AM by 4 8 15 16 23 42 and filed under
This January I was pretty busy with my course projects. In graduate level, the projects are generally more difficult than in undergrad and the projects are really detailed.

It’s not that I didn’t like the courses I took last semester but the time to focus on projects was insufficient, therefore I got really tired.  I spent so much time to reach some information and I remember typing similar keywords to google for hours and not getting useful information. So I thought I could summarize my projects and give some details which took me a lot of effort and time to reach.

Hopefully, someone who suffers the same problem as I did, may find these blogposts useful. (And this blog would really serve a purpose )

So I will write 2 blogposts and give details about my Linear Programming and Regression Projects. 



My knowledge is all yours.
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Posted on 11:49 AM by 4 8 15 16 23 42 and filed under
It’s better to wrap up two last days together, since in the last day mostly “end of trip” theme was around.

In the 6th day I were totally convinced that the bays of Marmaris are marvelous.

This is a picture from the Selimiye bay:
Basically in the 6th day we went from above to below.


The photo above belongs to Bozukkale Bay, which was our final destination before returning Albatros Marina, where the trip started.

At the end of this cold February Sailing Trip, I’m glad I did it. I got wet, cold and maybe got exposed to tough weather conditions; still I learnt a lot, had fun and my motivation for sailing multiplied.

I had almost no experience with a big boat, and a Dufour 40 ain’t like a 23 Feet Gorbon. I had never stayed in a boat, and I had doubts whether it would be annoying after some days. Seven days after, I think life on the boat is really enjoyable (as long as you have working toilet and drinking water).


Le Fin


About Sailing Trip Blog Posts: Writing these posts were a lot difficult than I expected cause I only know Sailing terms in turkish. And writing these when you are tired really affects your writing skills. Sorry, if I made any grammatical errors or formed meaningless sentences.
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Posted on 11:44 AM by 4 8 15 16 23 42 and filed under
When we woke up, sun was  welcoming us to the new day. Normally you think a sunny day would be kind of warm, right? NO . NO . NO.

Before the trip, they told us to not carry a sweater for each day and they were right. We all wore the same things all day and even at night, because it can be very cold and since our day clothes are the thickest ones.

I brought 2 sweatshirts to the boat, which were insufficient. In February, if your clothes get wet, they will stay wet (Lesson learnt). My first sweater got wet to the maximum in the first day (vomit festival). So I had to wear the other sweater each day. I didn’t feel skinky or anything but if that one got wet also, I wouldn’t have another one which kind of sucked. (Move away quickly if you see anything fluid-likeJ )

Coming back to Day 3, it was the coldest day of the trip despite the sun. My uniform didn’t keep me warm enough to let me think anything except “it’s damn cold!”. So I went to my room, and put on anything that is not much wet (dry was a strong word in these conditions).

So I kind of looked like Marshmallow Man from Ghostbusters:



Ok, I admit I was not that sweet.  Still, after costume change/upgrade, I felt a lot better and enjoy the day. 

We anchored in Dirsek Bay for lunch. Well, honestly anchoring was a lot harder considering the fact that anchor rode fell off without our control and we had to pull all the steel rode in. It was good practice because all the crew wanted to pursue career in weightliftingJ.

We didn’t want to spend the night in Dirsek Bay, and we wanted to do some more sailing. I guess we exegerated a little because the night fell when we were out in the sea, abay from safe bays.  Sailing a night is very different from daytime, it is riskier and much more difficult. Yet we had working GPS and hopefully we were not that far from Selimiye Bay. So after putting on lifesavers, using projector and gps we managed to anchor in a safe bay.

In the first days, for dinner we were having classical easy to prepare food like macaroni or scramble-eggs. As days went by, we discovered that some of the crew were really good at cooking so our simple dinners transformed to feasts.

Todays menu:
  • ·      Noodle
  • ·      Really really good Salad (Not because I prepared it myselfJ )
  • ·      Tiramisu
  • ·      Turkish Coffee

Yummmy. I got hungry again.


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Posted on 11:37 AM by 4 8 15 16 23 42 and filed under
Keywords of the day:
Rain, Hail, Horror, Marina, Bath , Happiness

Here comes the story:

We left Bozburun early in the morning to go to Marti Marina which is a very popular especially in summer.  We were ahead of our schedule, so we thought let’s hangout for a while in the open since we have time.  Well, sometimes in sailing you never know what to expect.

The wind got stronger and stronger and it started raining really hard. All of a sudden, the waves in the sea took a different form, as if we were in the middle of a hurricane. Plus hail started to fall which made it worse. We had to reef the sails with one hand and cover our faces with the other. Adrenaline!

Looking afterwards, I kind of enjoy now for what I’ve been through, yet at that moment I was only hoping weather to change.


Surviving the weather zone, we could finally reach Marti Marina. Hot water is really a miracle on earth.


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Posted on 11:33 AM by 4 8 15 16 23 42 and filed under


To compensate the first 2 rainy and windy days, climate has decided to make a gesture on the third day. Sunny warm weather, less wind but suitable to use spinnaker we all  had really enjoyed the day.

I could explain that day a little more visually:







We reached Bozburun and had dinner in a fine restaurant. My motivation is  at tops.
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Posted on 5:54 AM by 4 8 15 16 23 42 and filed under

After 10-hour sleep, I was reborn and back alive. We took our fixed main sail, had some breakfast (scrambled eggs) and left the marina in the hopes of a better day.

The weather was again windy and rainy but the waves were smaller compared to the day before. No trouble for our stomachs.

Before the trip, I had only 1 hour to prepare and no time for shopping. I didn’t have windproof pants, some proper shoes or gloves. I was WET WET WET!!!!!

Who wants some adrenaline? The spinnaker was nearly falling to sea, we catched it at the last minute.  When it is wet, spinnaker weighs a lot such that 5 guys could only carry it.

8 hours of sailing and we reached Serce Bay, a very lovely bay indeed.  
In the trip along with us, there were 3 other boats. We were sailing together and communicating via VHS.  We heard that one of the boats had some trouble when they started their motor in the bay. A black fluid was leaking from their engine and no one knew the reason. Again the solution was to dive in and check the blades. Well, a giant plastic bag was stuck in the blades of the engine!!! After it’s removed, everything works perfect.

We had macaroni for dinner and some soup. You know what, after all day sailing every hot meal is a feast.

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Posted on 5:12 AM by 4 8 15 16 23 42 and filed under
To go  to Marmaris, you first go to Dalaman by plane and then you have a one-hour drive. My flight was very early and I couldn’t get any sleep at all (Lesson Learnt: Always sleep before a sailing trip).

Since we plan to spend a whole week on the boat, a group went to shopping for vital supplies. Chocolate bars, chips and alcohol are very important in our survival as the shopping bags show. One-week supplies for 8 people cost almost 500 Euros and to give you an idea we took 25 water bottles of 5 liters.

All the supplies are taken, the paperwork finished we were ready to sail at noon.
We untied the ropes but wait, a rope was stuck to motor fan. In order to leave the marina all the rope must be set free of the motor or motor could be damaged.
Solution: One must dive in the sea (Rainy day in February) and cut the rope.
Victim: Our captain of courseJ

At last, we could leave the marina and get on the way. The weather was very windy, that was not the problem, but the waves on the sea have caused trouble in our stomachs.

40 minutes sleep + hunger + giant waves for 3 hours = VOMIT

I was not the only one of course; half of the crew has vomited. We were all wet, all kind of panicked of the harsh weather conditions and most of us were tired.

Most importantly at that moment, we would all prefer to watch tv in the house, than sail there. I kept asking myself why I was in this trip.

And then, we noticed our main sail was ripped. When a sail on the boat is ripped you have to fix it, otherwise it could be dangerous. You may not control it, yet it may be unusable. So we decided to turn back to Albatros Marina, the place where we left off 3 hours ago.

After a hard day, we were all begging for some hot soup and some food. When our stomachs were full, and our clothes were dry, we thought:

It wasn’t that hard, was it?


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Posted on 4:50 AM by 4 8 15 16 23 42 and filed under

Finally the semester is over. After all the finals to take, projects to finish, and reports to write I finally start enjoying some vacation for myself.

For my vacation plans, the most interesting one is a sailing trip I am planning to go. I started sailing almost 3 years ago but I couldn’t continue all the time for various reasons, mostly due to the sailing club I was going to. Although I enjoyed their company, I thought they lacked professionalism and proper organization.

Hopefully, my new university has a very good sailing club, they have tons of activities and they work very hard. 3 times a year, in different seasons, they organize one-week trips to beautiful sailing spots of Turkey and you spend whole week sailing, which is great.

It’s a great experience because you eat, sleep, hang out on the boat and you learn to live like a sailor.

For the first time I am going to a sailing trip and I am planning to write a couple of words each day about it.

We are going to Marmaris and we are planning to sail between famous bays of Marmaris. Mostly we will stay in bays and other times in marinas. 


Here is our map:




Our boat is a Dufour 40, it looks pretty cool in the Youtube commercial video below (although ours is older, dirtier and a little smelly)




Let the trip begin……


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Posted on 2:56 PM by 4 8 15 16 23 42 and filed under

Busy busy busy!!!

I hate finals. I hate project deadlines. I hate especially when there are both in the same time.

Anyways, until 26 January, I will be studying for my 2 finals and 3 projects. In graduate level, although you take a few classes, they expect you much much much more.

I hope I will survive and keep on blogging.

A bientot
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Posted on 3:37 AM by 4 8 15 16 23 42 and filed under

New Year 2010!!!

It has almost been one year since I've been blogging( I have only written 10 posts or something!) and 2009 has been an important year for me.

The most importantly I am graduaded from university and got my industrial engineering degree. That's a major step I guess. After zillions of applications, I decided to go for a masters degree in industrial engineering also. So basically, I went from here



To there



With its magnificent view of the bosphorus and its great location, my old scool had a really nice small, warm feeling. Though it's better to change school after a while and observe the differences. I like my new university, although its very challenging, and I think that I've made a good choice.

With this new university, I started to stay on dorm first time in my life. I go to home at weekends and time passes tooooo quickly. Still, I guess I like that also.

In 2010, I plan to write more posts, share more and get the blog going. I am gonna make a list about my plans for the blog very soon.


Thoughts will be provided

in 2010

Happy new year!



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Posted on 3:48 PM by 4 8 15 16 23 42 and filed under

Let's start…

He invented a musical instrument called glass armonica. Mozart wrote two pieces for the armonica, including "Adagio and Rondo 617," and in 1815, Beethoven wrote a short melodrama where a narrator told a story while accompanied by armonica.




He also invented an efficient stove providing more heat and less smoke than an ordinary open fireplace. His stove was described by his contemporaries as giving off twice the amount of heat as a normal fireplace for a third of the wood consumed.



Along many many discoveries in electricity, he who invented lightning rod and saved millions of houses from thunder. Thanks to him, thunders were no longer disastrous.



The same guy was also the first one to observe Gulfstream currents.




These were only a couple of his inventions.

Who was it? Maybe this image would help.



It was Benjamin Franklin.

Benjamin Franklin (1703-1790) was born in Boston, as the youngest of 17 brothers. His father had a candle-shop, and his mother probably spent all her life with house work as a mother of 17 children.

His family was not wealthy or intellectual thus his family has never been a major factor of his success. Though, as I understand, they supported learning and to some extent Franklin's life choices.

He is sent to Latin school to learn theology at the age of eight. But he was not interested in it. His father Josiah, observes Benjamin's lack of motivation and takes him out of school. They afterwards search for a suitable job for 10 year old Ben.

As a child, he has a hunger for information of all kind and his father's library helps him a lot He spent many hours reading books from various kinds. He reads from Socrates to John Locke, at a very young age and continues reading all through his life.

Primarily, Ben works for a relative who repairs knife. He dislikes the job so with his father they search a more suitable job for him. Printing seems interesting for him, as it involves getting involved with books, so finally he starts as an apprentice in a printing shop. (He continues in this profession until he retires on age 42, in addition between many other professions he was given, he identifies himself as a printer on his will.)

After disagreements with the owner of the printing shop, he goes to New York in the hopes of a new job. Not finding in New York a printing shop to give him a job, he hears about some opportunities in Philadelphia. Therefore, he moves to Philadelphia for work.

In Philadelphia, he starts to write columns with fake names. Poor Richard's Almanac gains extensive popularity.

While spending many hours at work, he never neglects reading and more importantly thinking about everything. He forms a small discussion group, named Junto, where every Friday they discuss various topics. The topics may differ from public problems to scientific inventions, about everything that is helpful to discuss. Ben's Junto becomes so popular that other discussion groups are formed within the city.

Basically, as he continues to work in Printing( after a while as an owner of a printing house) he constantly thinks about the world around him, and this constant thinking and learning, helps him develop from very creative solutions to major public problems, to inventions in very challenging scientific areas.

He thinks, he researches, and he observes. Not on some major area, but basically in all areas.

He formed:

  • the First Fire Department in Philadelphia
  • City Cleaning System
  • An Academy for poor children (Now became University of Pennsylvania)
  • First Hospital in Philadelphia.

Namely a few.

He found a way to pass American Indian language to writing. Also he was the one who first used caricatures and question-answer technique in journalism.

He invented Glass Harmonica, a musical instrument composed of various sized glass cups.

He was the first to observe Gulfstream currents in the ocean, and thus proposed a better trajectory to pass the Atlantic.

Condenser, conductor, charge, discharge, battery, electrical choke, positive and negative electricity, plus – minus charges. These notions were introduced by him.

He discovered the difference between electricity and thunder. This discovery led to the invention of lightning rod. Thanks to him, millions of houses worldwide were protected from thunders.

I didn't even start to write about his role in politics and diplomatic achievements!!

  • He was the first to propose the idea of union of states and a centralized government in 1751 (Albany Plan) His plan was not approved in the first time but after 20 years, his model gets acceptance.
  • He represented colony in London for years
  • He opposed to the Stamp act which was meant to burden excessive taxes upon colony
  • He served as a delegate in Continental Congress and took place in the committee that prepared the draft of Deceleration of Independence.
  • He seeks economic and military aid in France for America. With his efforts France assured critical military assistance to America. He also played a crucial role in bringing about the final peace treaty with Britain in 1783.
  • After United States of America was founded, in 1785 at the age of 82, he gets elected as the President of the state of Pennsylvania.

He dies in 1790 at the age of 87.

I'm sure I forgot to mention some of his critical roles and contributions thus my intention was to give a brief resume of Benjamin Franklin.

I really can't understand how he could do all this, but he really did. I ask myself how it can be possible to succeed in so many different areas. Still, I guess the case of Benjamin Franklin motivates all to pass boundaries.

Think, Discuss, Observe. Maybe that was the key to his success. Never give up. Always learn other thinges.

Well, he was a great man, that's for sure!

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Posted on 2:52 PM by 4 8 15 16 23 42 and filed under

Hopefully, this post is not a book review. It's about Cloud Computing.

Microsoft's Ceo, Steve Ballmer said that the company plans to spend 9.5 billion dollars in 2010, to cloud computing. The company will launch, Microsoft Azure, a cloud computing system.

Google has recently announced its Cloud-Based Operating System, Chrome OS and according to Google, the future is in Browsers and in the Cloud.

Amazon offers Cloud Based Storage, and according to their web site : "Amazon S3 provides a simple web services interface that can be used to store and retrieve any amount of data, at any time, from anywhere on the web."

Quite impressive huh? Given all that, I decided to search over what is this Cloud Computing? What is Software as a Service? Why is this important?

The first helpful document that I came across on the web, was UC Berkeley's 25 page report about Cloud Computing which summarizes what is cloud computing, its obstacles and how can these obstacles could be exceeded.

In simple words, Cloud computing is a general term for anything that involves delivering hosted services over the Internet. As the report suggests 3 aspects are new in cloud computing:

1. Infinite computing resources available on demand: thereby eliminating the need for Cloud Computing users to plan far ahead for provisioning.

Simply you have resources, and demands of using these resources. That means you can meet demands under resource capacity, but you cannot satisfy them if demand exceeds capacity.

Let's say, you have a website, and users login to the website. You run couple of servers in order to process the login information from users. Assuming, your servers can only process 1000 user login requests that means if more than 1000 users want to connect to site, you turn many down. (You wouldn't want that). On the other side, when user login requests are less than 1000, and you run servers that can meet up to 1000 users, that means you are running some servers unnecessarily (You wouldn't want that either).

Or, let's say the demand of users wanting to use the site varies a lot. Some days there are 1500 user demands, whereas the next days you have less than 1000. So you decide to rent/buy extra servers, that means you take a risk, if extra servers are not used that means you spent money unnecessarily.

So here comes the cloud solution, instead of owning servers/data centers, you deal with a (yours*100000...) sized Data center, and pay them for the resources you are using. As these big data centers( Cloud Providers) are well sufficient to meet any change in demand, there comes Infinite computing resources available on demand.
That gives you elasticity and lets you transfer that risk.


2. The elimination of an up-front commitment by Cloud users, thereby allowing companies to start small and increase hardware resources only when there is an increase in their needs.

This aspect of Cloud Computing would motivate business ventures, as the initial costs of the startup would decrease.


3. The ability to pay for use of computing resources on a short-term basis as needed (e.g., processors by the hour and storage by the day) and release them as needed, thereby rewarding conservation by letting machines and storage go when they are no longer useful.

For a business, if running servers on its own is more costly than paying per resource used on the cloud provider, then Cloud Computing is very useful.

According to Berkeley report, there are 10 major obstacles,

1. Availability of service
2. Data lock-in
3. Data confidentiality and auditability
4. Data transfer bottlenecks
5. Performance unpredictability
6. Scalable storage
7. Bugs in large distributed systems
8. Scaling quickly
9. Reputation fate sharing
10. Software licensing

Berkeley researchers, list possible approaches in overcoming these obstacles. And they say that:

"we believe that over the long run providers will successfully navigate these challenges and set an example for others to follow, perhaps by successfully exploiting the opportunities that correspond to those obstacles."

Also Mike Clein, president of Online Tech, states that

"For many, online data storage is less expensive, faster, more secure, and more reliable than the tape backup systems used over the past several decades. "

So, the future of Cloud Computing seems very bright. Go Cloud!



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Posted on 1:34 PM by 4 8 15 16 23 42 and filed under

Einstein states in 1938, that:

“Humanity has every reason to place the proclaimers of high moral standards and values above the discoverers of objective truth. What humanity owes to personalities like Buddha, Moses, and Jesus ranks for me higher than all the achievements of the enquiring and constructive mind.”

Pretty strong, huh? I didn’t know that Einstein found religion more valuable than science. Apparently, Einstein has many statements supporting religion, but I thought that he would be kind of anti-religion as a very great scientist. This topic is very intriguing yet it is not the topic of this post. This post is about how I came across the quote above.

If you look at the (XX) posts published in this blog, you can easily realize that %90 of this blog is about Michael Crichton. I admit that I am a great fan of his work, but this time my adoration for him, multiplied. In Travels, only autobiographic book of Crichton, he tells the reader the milestones of his life, his challenging travels and what he gained from them.

When I came across this book at the university library, (I have previously tried to find it in bookstores but they don’t have it here) I got very excited. I realized that I haven’t really read an autobiographical or biographical book hence it was very different.

Why? I can explain this way, although I like reading classical thriller stuff, John Grisham, Dan Brown and of course Michael Crichton, as the characters are fictitious I get the idea that “these stuff wouldn’t happen in reality”. They are fun to read, but characters looked similar to me in every book.

One hero-type, one beautiful and smart woman, they get over the challenges together etc. After a while, I thought I had enough of these books for a while. So I read serious stuff like Guns & Germs and Steel, Fountainhead etc. Anyways, the idea of getting to know better such a creative mind, Travels seemed very exciting.



Travels starts by the medical studies of Crichton, why he studied medicine and why he didn’t practice the medicine. It is not common for one to get in to Harvard Medical School, struggle all along studies economically and mentally than after finishing the school never wanting to work as a doctor. He then continues with aspects of his life in Los Angeles, writing novels, and directing films. He progresses chronologically the important experiences of his life, thus his travels. He goes to roughly all the adventurous places in the world from Africa to New Zealand yet he shares what conclusions he reached after them.

The most interesting part, I think, is that the book is mostly about “inner travel”, the journey of one to his inner self. There are no such statements as “ Oh, dear Champs Elysées is really great, although I wanted escargot but the waitress got me wrong, Oh French people!” J I hope this is example I tried to give wasn’t cheesy, but I really want to emphasize the profoundness of this book.

Anyways, over time he is intrigued about psychic phenomenas like channeling, astral spaces, auras, energies etc. He experiences some of them, some of them not and he explains the details of his experiences. He experiences seeing auras and energies of people, talking to his dead father, and mediumship on some level. He is scientifically trained therefore his views on these matters are highly important. He is not someone who would accept anything without interrogating, but his experiences cited, represent something that cannot be explained, yet real. So should we accept them?

It’s a thought provoking question, of which I’ve never focused previously. I guess I always thought that some people had certain abilities (that KGB had focused on developing) but all this psychic stuff, kind of blah blah. Now I don’t know whether to believe or not. Before agreeing I need to see on my own. Thus I don’t deny them now.

Scientists generally find these unexplained events not true, fraud. One of the main reasons is that some of them are really frauds. Some practionners say that they are talking to dead, but they aren’t. Some say that they see your future, but they don’t see anything, etc. But that doesn’t mean that these phenomonas does not exist, according to Cricton. The same happens for science as well, he explains, Mendel fudged his data, Lazzarini faked an experiment to determine the value of Pi and so on. That does not mean that Science is fake.

After all, science does only answer “How Nature Works?” and not “Why nature works that way?” Humans have always searched for the meaning of their life, why do they exist. Science does not correspond to that answer and that’s why people are interested in psyche.

Probably that’s why Einstein said:

“Humanity has every reason to place the proclaimers of high moral standards and values above the discoverers of objective truth. What humanity owes to personalities like Buddha, Moses, and Jesus ranks for me higher than all the achievements of the enquiring and constructive mind.”

Crichton at the end of the book, summarizes his thoughts on this phenomenas, some of them he believes in, in some of them he does not, are to be taken seriously. He advises the reader not to take his word on this stuff, and go out for ourselves. If something does not work, try another. Be cautious of anyone seems interested in your money. Be cautious of someone who implies that he has the answer; the real answer is in you.

Whether his conclusions are right or wrong about this subject, the way he organizes his thoughts and his accomplishments seem amazing to me. He has lived a very different life and I am really sorry he has passed away.



Admiration, is the only emotion I feel towards him right now.

Thanks Michael Crichton.