Friday, July 23, 2010

Finished My First Kindle Book

Recently I finished my first Kindle book. Now, I can tell you that the full experience is very close to reading a real book. Not the same, but better. :-) I decided that my first Kindle experience must be a light book, small, easy to read and useful. This way, I would avoid any frustration with Kindle at the beginning.

Fortunately, I found an excellent book, that fitted very well in my criteria and it ended up being more useful than I would possibly expect. Actually, this book changed the way I used to think about work and business. In my opinion, it is supposed to be a milestone in the history of administration, without any exaggeration. The change was not more dramatic because I didn't implement it yet. My thesis is not allowing me to, but I will as soon as I can.

If you plan to open a new business or simply run an idea smoothly, it is a "must have" book. I highlighted some interesting sentences just to give you an initial idea. The book and its website give you several others.
"To keep your momentum and motivation up, get in the habit of accomplishing small victories along the way. Even a tiny improvement can give you a good jolt of momentum."
"Competitors can never copy the 'you' in your product."
"If you build software, every error message is marketing."
"Never hire anyone to do a job until you've tried to do it yourself first. That way, you'll understand the nature of the work."
"It's crazy not to hire the best people just because they live far away. Specially now that there's so much technology out there making it easier to bring everyone together online."
"Write to be read, don't write just to write."

Amazon has recently announced that "over the past three months, for every 100 hardcover books Amazon.com has sold, it has sold 143 Kindle books. Over the past month, for every 100 hardcover books Amazon.com has sold, it has sold 180 Kindle books.". I attribute this to the incredible simplicity of buying and getting access to the book in seconds. A closer friend bought the hardcover and he had to wait several days to receive it. I got Rework instantly. That's the difference.

Saturday, July 17, 2010

Writing Scientific Papers

When I was a young researcher nobody taught me how to write a paper. Maybe, it is a sort of a test: if we prove we can write one, without any guidance, just taking into consideration other papers, we are ready to face the research world. In fact, many young researchers don't even know what a paper is useful for. Their lack of understanding and absence of instructions bring them fear and low self-esteem to write one.

Recently, I received some papers to review and I could see a lot of evidences that novice researchers still make the same mistakes that I used to at the time of my debut. I have contributed in publishing 17 papers so far, and it gave me some experience to share with you about paper writing. My intention is to be clear and honest, so there is no rigor in this text and I don't try to magnify the academic world with nice words.


A paper is a written report of what is going on during a scientific research. That's why it is so boring to read. This report should be published somewhere. If we do not publish it nobody will actually know that we are active in research, thus we are not considered as researchers. If we publish, good! It means that other researchers have read and evaluated our text, identifying some innovation there. There are many kinds of publications. We can publish our work in conferences, workshops, journals, etc. Some of them are more accessible, others are more challenging. "Challenging" means that the researchers that will review our paper might be top specialists on the field, and if we are good too, they are our competitors. It usually happens when we submit to a journal. "Accessible" means most conferences and workshops. Renowned conferences work like journals, but a lot of conferences are not so rigorous and our papers might be reviewed by specialists, but not necessarily in our field, which will lead them to observe other aspects, like scientific methodology, text quality, structure and some logic in our words. The formula of a good conference is  = tradition (several years) + strong reputation (stars in the program committee and hosted by renowned institutions) + blind reviewing process + strong sponsors (i.e. ACM, IEEE) + no submission extensions (important dates are like mountains: they don't move).

In general, a paper has the same structure of how research is conducted. However, we don't have to write this exactly sequence neither use them as our section's titles. You can be original, but please, preserve the essence. This structure is as follows:
  • Abstract: Considering our incredible summarization power, we have to write a few lines about the paper's contribution in order to convince the reader to consider the work. People who are looking for references for their state of the art definitively appreciate well written abstracts.
  • Introduction: We introduce the document explaining the context where the research is inserted, which problem of this context the work is going to explore, a summary of the solution and the consequences of solving the problem, concluding with a reading map of the rest of the document. The introduction does not give details about the research, but it should invite the reader to continue through the rest of the content.
  • State of the art: Depending on the maximum size of the document, the introduction can also contain the state of the art in case of small papers (up to 6 pages), but it is so boring to read that it's better to put it in a separate section, giving the option to the reader to jump it. But only when we have more space to write (over 6 pages). The state of the art describes recent advances that have been developed elsewhere. These advances are cited to a) justify our decisions; b) show a gap that our work is going to fulfill, or c) show a similar work with a different approach to solve the same problem we are exploring. The content of our work is supposed to be new, built on top of the state of the art and the rest of the paper is to prove that. It's important to mention that some authors prefer to write the state of the art after the contributions, but it is just a style of writing.
  • Contribution details: The most important part of the paper is where we describe the work we have done so far, and it should contain something new over the presented state of the art. This new "thing" should be described into details in order to allow reviewers to fairly evaluate our work, and give us a constructive feedback. The more distinguished is our contribution from the state of the art the more chances we have to get our paper accepted. That's why it is called contribution. Contribution to the science.
  • Validation: Ok, we have done a nice contribution, described it into details already, but how can we prove that it is actually realistic and useful? So, we have to describe how we could validate our research, showing the procedures, the execution and the results. Validation might be the hardest part in a research because the contribution is just an idea and the validation is the implementation of this idea. The same way we cannot trust a software that was not tested, we cannot trust a research that was not validated.
  • Discussion of Results: The results obtained during the validation deserves additional attention. We can use them to compare with other papers' results, analyze possible implications and so on.
  • Conclusion: Some people make a summary of the whole paper in the conclusion, but we have to summarize only our contributions, validation and obtained results. Introductory discussions and state of the art are irrelevant here. The conclusion also considers future works, which is actually what we didn't have time to do, and probably will never have. Who knows? But at least, reviewers will not complain about those future works because they are out of scope.

Depending on the reader profile they will read our paper in different ways. Of course, we will be the first to read 100% of our paper, maybe many times, and the last one too. Nobody else would be so patient to do such a thing. The reviewers don't have time to lose because they have 10 more papers to read, besides other several duties. So, after the abstract, they will jump to the conclusion, see the contributions, go through the results, and finally write the review. Conference's attendees will read only the abstract. After being published, only young researchers and people out of the research community will read the paper's introduction. For experienced researchers, our abstract should be enough because they know too much about the field and they don't have time for bla, bla, bla. In summary, each part of our paper has a particular audience and we should consider them in the writing process. The only exception are journals and renowned conference reviewers, who will read 100% of the paper like we did, and that's all.

To be honest, I don't like to write papers, but sometimes we have to do what we don't like to get what we want. During the PhD, publishing a certain number of papers is mandatory. The better is the journal or conference, the easier will be the PhD defense, because the jury is aware that they don't have to be so rigorous if other researchers in the academic world already have. After getting the PhD, the number of references to our work becomes more relevant (other papers referencing our paper in the state of the art) than the number of publications we have. Seeing these as indicators, the number of publications shows our research activity and the number of references shows the relevance of our work.

Besides that, I also have problems to conciliate formal language, readability and deadlines. That's why I love so much my blog, a place where I can express myself through my soul.

    Friday, July 2, 2010

    That's All for Brazil in The World Cup 2010

    Well, the Brazilian team is out, ironically at the quarter-finals, which is the same stage that it left the World Cup in 2006. Dunga, the current manager, did everything to change the culture of arrogance of Brazilian players and intrusion of the rigorous Brazilian press, specially TV Globo. He could change the behavior of the players, fought against the press, but he could not deal with the immaturity of some players, who were too much confident about the victory and lost their minds in the second half.

    Now, Dunga will be over attacked by the press, by angry fans and by himself, maybe for not understanding well what was wrong during the preparation of the team. To give you an idea of the press criticism, the website of the main critic, TV Globo, is out of service since the end of the match until now (3 hours later), while several other Brazilian websites are running normally. It's probably due to the curiosity of visitors to know the next round of this fight (Globo vs. Dunga).

    At least, none of the remaining competitors won the World Cup 4 times (Italy did it but it was already eliminated), which lets us still with a relatively good distance as 5 times World Cup winners for 4 more years.

    Losing this time does not mean that we will win next time at home, despite being already classified for hosting the next edition. By the way, every time that Brazil goes well in the World Cup qualifiers it goes terribly in the World Cup. It was like that with Zagallo in 1998, Parreira in 2006 and Dunga in 2010. When Brazil was terrible in the qualifiers it prospered, like in 1994 with Parreira and 2002 with Felipão. Now, what could happen without any qualifiers at all?

    In fact, there is a lot of hard work to do. Now, that Dunga is out, it's time to chose a new manager and this manager will be the most pressured manager ever, since Brazil will host the next World Cup. I know one person that can resist to such a huge pressure: Luiz Felipe Scolari.