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		<title>Sobre os Protestos em Teresina (Riots in Teresina, in portuguese)</title>
		<link>http://sertao3d.com/2011/09/02/sobre-os-protestos-em-teresina-riots-in-teresina-in-portuguese/</link>
		<comments>http://sertao3d.com/2011/09/02/sobre-os-protestos-em-teresina-riots-in-teresina-in-portuguese/#comments</comments>
		<pubDate>Fri, 02 Sep 2011 04:45:46 +0000</pubDate>
		<dc:creator>erickpassos</dc:creator>
				<category><![CDATA[news]]></category>
		<category><![CDATA[protestos]]></category>
		<category><![CDATA[riots]]></category>
		<category><![CDATA[teresina]]></category>

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		<description><![CDATA[Discussão que tive com uma arquiteta (via book of faces) sobre o significado dos protestos estudantis que estão acontecendo em Teresina por conta do aumento das passagens de onibus. Ela pediu permissão para colocar no seu blog, o que estou fazendo também. Omiti os comentários iniciais de pessoas que não me deram autorização para reproduzir [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=653&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Discussão que tive com uma arquiteta (via book of faces) sobre o significado dos protestos estudantis que estão acontecendo em Teresina por conta do aumento das passagens de onibus. Ela pediu permissão para colocar no seu blog, o que estou fazendo também. Omiti os comentários iniciais de pessoas que não me deram autorização para reproduzir aqui&#8230;</p>
<p>O comentário inicial foi uma alegoria sobre a queima do onibus que ocorreu hoje (galeria de fotos pessoais no fim)&#8230; Segue a discussão:</p>
<p><strong>Erick Passos</strong> no RJ fazem isso a anos. O serviço continua péssimo, sem integração alguma, e a passagem é bem mais cara. Massa de manobra + instinto gregário + pouco dicernimento = &#8230;</p>
<p><strong>Larissa Tollstadius - </strong>Erick, não acho que o serviço de ônibus no rio continue o mesmo de sempre não. Aliás a cidade de um modo geral, pra o que era nos anos 90, pra como tá agora melhorou. O trasnporte é mais caro, mas também os percursos são maiores. Beleza que a última vez q eu andei de ônibus no rio foi num percurso &#8220;privelegiado&#8221;&#8230;</p>
<div id="id_4e605b8acc3907d92068167">Colocar em risco a vida de pessoas inocentes? Sim o policial que desceu armado do carro na quarta-feira, e outro cidadão que tb desceu com arma em punho hoje estiveram sim colocando a vida dos manifestantes em risco.</div>
<div><strong>EP</strong> - Sobre o RJ:<br />
- Passagem R$ 2,50;</div>
<div>- Integração entre linhas de onibus: NÃO;<br />
- Integração entre metrô, onibus e barcas: NÃO;</div>
<div>Eu morava em Niteroi, e o lobby para nunca abrirem uma licitação e estação de barcas em São Gonçalo beira a imbecilidade. Obriga o trabalhador que mora em SG a pegar 1 onibus até Niteroi, 1 barca até a praca XV, e talvez outro onibus no RJ.</div>
<div>- Total: R$ 7,50;<br />
- Tempo: 2h+;</div>
<p><strong> LT</strong> - Eu sou de pagar pra ver no que vai dar essa manifestação. É complicado discutir o sistema de transporte, valoração de passagem, quais são os fluxos que tem dentro da cidade. Não sei de fato fazer uma avaliação decente sobre o transporte no rio. Achei fácil e confortável ir do Centro para Barra. E aí fica fácil também explicar pq há um bom meio de transporte para essa zona da cidade, área completamente burguesa. Fui para Niterói, mas apenas turistando. Mas o que eu diria, é que não sei se tem tanto fluxo de uma população de baixa renda entre Niterói-Rio. Niterói tem alguma infra-estrutura e mercado de trabalho para absorver essa galera. Mas vê? São muitas coisas a se considerar para dar um veredito. Uma situação complexa, mas que não é impossível de se resolver, desde que haja boa vontade.</p>
<p>Você tava na manifestação? Tanto a coisa tá errada, que esse policial que apontou arma pra galera foi detido. E o outro, o de hoje, foi um civil q colocou arma para cima porque é uma pessoa infantilizada. Há um movimento social, ele não compreende a necessidade desse movimento e não quis entrar na dança. Se sentiu contrariado e por birra apontou a arma para galera. Só que adulto com comportamento infantil é sim um perigo para população. Porque na hora que ele se sentir contrariado não vai pensar duas vezes em disparar. Fui dois dias, e acompanhei atos de revolta sim, mas pacíficos. é uma multidão? Sim. Mas que usa dos seus corpos para se manifestar. Se enfileiram para parar o transito. Cantam, gritam. Mas não agridem. Tiveram atos de maior violência? Sim. Foi incendiado um ônibus. Fato. Mas esses são acontecimentos pontuais. E ainda assim, são atos de reação.</p>
<p>Porque o poder público é burro! Cadê a guarda municipal de trânsito para criar rotas alternativas que desviassem os carros dos locais da manifestação? Carros subiram os canteiros por falta de uma guarda municipal que orientasse o reordenamento do transito. Não só uma manifestação interrompe o tráfico numa via arterial, as vezes um acidente, e a cidade deveria estar preparada para esse tipo de acontecimento. Pois é&#8230; quando o interesse é coletivo, alguns benefícios pessoais não podem ser atendidos. Mas ninguém fica completamente sem poder se locomover. Só não vai haver o mesmo fluxo dos dias rotineiros. Por que para que a prefeitura tome alguma providência, precisa haver um impacto. Nada disso estaria acontecendo se houvesse um atuação transparente da prefeitura. Se não houvesse um aumento de mais de 10% no valor de um serviço básico, enquanto não há reajuste no salário dos usuários.</p>
<p><strong>EP</strong> - Sobre Niteroi: o fluxo de pessoas de São Gonçalo pro RJ é BRUTAL. Maior que todo o fluxo de onibus em The inteira.</p>
<p>E estava na manifestação sim. Vi como foi que incendiaram o ônibus, e aquilo não foi reação a nada. Acredito até que quem fez aquilo fosse algum malandrinho bem nascido só querendo bagunçar mesmo. É fácil se esconder no anonimato. Fiquei feliz que tem pessoas hoje falando em usar flores na manifestação de amanhã.</p>
<p><strong>LT</strong> - Mas população de baixa renda? Mas veja que eu falei que não sabia se havia. E que não podia julgar. Acho natural que qlqr fluxo no rio, ou entre rio-niteroi seja maior do que em Teresina. Teresina não chega a ter 1kk de habitantes (até onde eu me mantive informada). Isso corresponde a que? A população de um bairro no Rio de Janeiro? O que a gente teria para comparar nesse esquema Rio-Niteroi, seria Teresina-Timon, mas se tento fazer isso, vou apelar para um achismo muito grande. Conheço demasiadamente pouco de ambas as realidades. E particularmente se fosse fazer um estudo sério, não sei se partiria para essas analogias.</p>
<p><strong>EP</strong> &#8211; São Gonçalo é uma cidade-dormitório, tipo Timon, de pessoas de renda baixíssima.</p>
<p>Usei o exemplo pra mostrar um local onde a população costuma se manifestar queimando onibus. E cujos problemas são muito maiores que aqui, e mesmo assim NADA mudou. Amanhã vou estar lá de novo, ajudar a fazer número, mas continuo achando que queimar onibus é coisa de falso-revoltado.</p>
<p><strong>LT</strong> - Usar flores na manifestação é bacana. Mas se vc tava na manifestação sabe que os atos de vandalismo são pontuais. O incendio do ônibus foi depois da reunião que houve com o prefeito que se mostrou inflexível em atender a pauta do movimento. E também foi no quarto dia de manifestações. Isso observando apenas essa manifestação em específico. De modo geral, o grupo de manifestante por avolumados que sejam, representam um grupo com menor poder. Além de serem em boa parte estudantes secundaristas, fardados. Imagina o impacto que não causa a esse grupo a figura de uma tropa montada? A figura do batalhão de operações especiais? Apesar do incêndio no ônibus, a coronel Júlia afirmou que a manifestação está sendo pacífica, é o que diz a reportagem aqui <a href="http://g1.globo.com/brasil/noticia/2011/09/estudantes-do-piaui-fazem-4-dia-de-protestos-contra-aumento-de-onibus.html" rel="nofollow" target="_blank">http://g1.globo.com/brasil/noticia/2011/09/estudantes-do-piaui-fazem-4-dia-de-protestos-contra-aumento-de-onibus.html</a></p>
<p><strong>EP</strong> - A polícia (tirando as merdas do 1º dia) está até condescendente demais. O pânico das crianças lá era totalmente desmedido quando viam uma farda.</p>
<p>Os atos de vandalismo são pontuais sim, e são eles que estou criticando. Na minha opnião, a PM tá apoiando o movimento, e só uns poucos não percebem isso.</p>
<p><strong>LT</strong> - Não sou a favor de queimar ônibus não&#8230; só acho que a situação deve ser vista diante da complexidade q ela envolve. Pois é? As crianças chorando quando vêem uma farda pode indicar alguma coisa&#8230; seria bom que as crianças ao verem um policial se sentissem seguras e não amedrontadas. Isso porque o significado simbólico construído em cima da figura do policial está se invertendo. Po Napoleão pode ter sido escroto, imperialista, mas ele conseguiu no governo dos 100 dias, retomar o poder, só caminhando =x Sem disparar uma balinha. Há a polêmica se a manifestação tem que ser pacífica ou se só chama atenção com algo mais incisivo. Acho que parar o trânsito é uma boa. Ou que nem tava fazendo hoje a noite, pedindo pra galera descer do carro e empurrar. Ocupar o palácio tb acho uma boa. Fica lá sentando, enchendo o saco do prefeito. Faz festa, toca música, grita.</p>
<p><strong>EP</strong> - Acho que vcs tão inflando demais o significado do que tá acontecendo.</p>
<p>Já vi isso antes&#8230;</p>
<p><strong>LT</strong> - ó, eu nunca vi de perto. Um amigo meu comentou que rolou algo parecido esse ano em Vitória. Mas não sei quanto tempo a manifestação demorou por lá. E como assim inflando o significado? Vc tá falando isso por eu falei em complexidade? xP</p>
<p><strong>EP</strong> - Não exatamente pelo que você falou, mas por outros comentários que já vi por aí. Uma pessoa chegou a citar que se sentiu &#8220;derrubando o capitalismo&#8221; (menos, por favor).</p>
<p>Eu já comemorei derrota do PFL aqui na porta do TRE, acompanhei aquele &#8220;movimento&#8221; cara pintada, que não passou de massa de manobra do interesse vigente (congresso não tava sendo bem pago pelo collor, e a midia não tava satisfeita tb, então tava na hora de tirar o cara). Sim o Collor saiu, e a turma que ficou era a mesma coisa (sinto vergonha alheia por quem participou daquilo).</p>
<p>Cansa ver os mesmos padrões se repetirem e as pessoas se iludirem achando que agitando pra chamar atenção se constrói algo&#8230; Chega daqui a um ano, vão votar no primeiro pateta que usar essa bandeira (mas que vai tomar suas decisões por trás pelos mesmos motivos mais egoístas, como sempre &#8211; foi assim com o PT).</p>
<p>Só acredito em movimento construtivos: estudo, trabalho</p>
<p>O que me entristece é que a galerinha que tá aí, num movimento que tem sua validade, talvez seja até mais alienada que a daquele tempo&#8230;:(</p>
<p><strong>LT</strong> - Sim&#8230; eu lembro que faz um tempo eu vi uma galera se manifestando ali no palácio de Karnak e não achei ngm com cara de revoltado, pareciam mais tá se divertindo.</p>
<p>E isso é a graça e a desgraça de um movimento desse. Tem de tudo, tem partido querendo se aproveitar, tem gente que tá achando gostoso tá dentro de uma multidão, tem gente que se aproveita para nos gritos descarregar suas raivas pessoais. Não há um movimento puro em favor da queda do aumento. Mas acho que não haveria condições de existir.</p>
<p>Mas confesse, que não há um certo gosto, egoísta que seja de estar sob os holofotes? Talvez vc não tenha agora (se acompanhou a queda do Collor já deve ter tido uns dias para amadurecer) mas em certas fases da vida é bom se sentir parte de um grande movimento.</p>
<p>Sem contar que as vezes a gente perde o foco na realidade, sonha, imagina, idealiza. Humanos&#8230;</p>
<p>Sou a favor de uma orientação construtiva também!</p>
<p><strong>EP</strong> - Você encontrou o principal motivo do movimento: se sentir parte de algo grande&#8230; Tem os pontos positivos nisso, claro.</p>
<p>Mas eu fico triste com comentários nesse tom: &#8220;quero é que exploda&#8230;&#8221;</p>
<p>Eu não, queria ajudar a contruir uma cidade pacata, cidadã e boa de morar, e não é assim que vai ser.</p>
<p>A prefeitura é fraca, os governantes em geral (dir, esq, todos) são fracos, oportunistas e pouco inteligentes.</p>
<p>Nos somos fracos, oportunistas e não gostamos de estudar.</p>
<p><strong>LT</strong> - Mas o que vc enxerga nisso? Eu enxergo pessoas com uma baixa auto-estima, que não acreditam no seu pontencial construtivo e portanto libertador. Baixa auto-estima que é bem vinda para que o sistema permaneça tal qual é&#8230; desiquilibrada, excludente. Então, sou a favor de olhar tudo com muita calma e carinho mesmo. E carinho até pelos vandâlos xP Carinho não é permissividade. Os limites tem que ser impostos sim&#8230; mas não é sair xingando e reclamando.</p>
<p>Gostei bastante do texto dessa menina!</p>
<p>Mas vou te falar um ponto positivo dessa manifestação. Ela tá movimentando a cidade. Está fazendo as pessoas falarem. Ela é provocativa&#8230; taríamos aqui conversando não fosse ela? Ela faz pessoas que discordam discutirem&#8230;fato. Mas o importante não está na discussão, está na condição criada para o dialogo. E isso não é bom? Fazer os outros acordarem para se posicionar?</p>
<p><strong>EP</strong> - Bem, é certamente uma visão holística e valorável sobre isso tudo. Eu só acho que isso é muito POUCO. É quase um conformismo, tipo: &#8220;que massa, a cidade ta um caos, olha como conseguimos algo lutando&#8221;, e acham que isso é o caminho suficiente.</p>
<p>Revolta sem educação = Haiti, Somália</p>
<p>Eu não sou nenhum conformado, pelo contrário. Como professor no IFPI tenho a minha &#8220;missão&#8221;: combater essa baixa auto-estima, arduamente. Meus alunos vão concordar.</p>
<p>Eu acredito que a capacidade criativa, o estudo e o trabalho são a maior força libertadora.</p>
<p>E pra fechar meu ponto. Eu não precisei desse protesto pra ser inconformado e lutar da maneira que falei acima. 99% das pessoas que tão discutindo agora instigadas por isso vão votar nas mesmas pessoas e continuar valorizando pouco o ensino.</p>
<p><strong>LT</strong> - São sim. Quando eu falo em potencial construtivo, coaduno com sua ideia de criatividade, estudo e trabalho. A educaçao como libertaçao, Paulo Freire o/ Seria a maior revolução.</p>
<p>A manifestação é um ato pontual. Se olharmos o processo de modo abrangente xP</p>
<p><strong>EP</strong> - Correto. O processo é abrangente&#8230;</p>
<p>Só queria que mais pessoas LESSEM essa discussão. LERAM?</p>
<p> <img src='http://s0.wp.com/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> </p>

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		<title>File Systems: from office analogy to obsolecense</title>
		<link>http://sertao3d.com/2011/07/16/file-systems-from-analogy-to-encapsulation/</link>
		<comments>http://sertao3d.com/2011/07/16/file-systems-from-analogy-to-encapsulation/#comments</comments>
		<pubDate>Sat, 16 Jul 2011 23:50:08 +0000</pubDate>
		<dc:creator>erickpassos</dc:creator>
				<category><![CDATA[essays]]></category>
		<category><![CDATA[internet]]></category>
		<category><![CDATA[programming]]></category>

		<guid isPermaLink="false">http://sertao3d.com/?p=632</guid>
		<description><![CDATA[An opinion on the rise and fall of file systems APIs. In the dawn of operating systems, there was a need to design a hardware and data structures to store persistent information generated (or used) by user programs. We know the rest of the story: tapes, floppy disks, hard-drives and now solid states, always driven [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=632&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>An opinion on the rise and fall of file systems APIs.</p>
<p>In the dawn of operating systems, there was a need to design a hardware and data structures to store persistent information generated (or used) by user programs. We know the rest of the story: tapes, floppy disks, hard-drives and now solid states, always driven by the OS&#8217;s file system implementation over the I/O driver API.</p>
<p>Files and directories/folders, organized as a hierarchical  trees (or directed graphs, if you consider links/shortcuts) were designed as an analogy to the file cabinets in offices of that time. This structure fundamentally never changed, and features such asynchronous writes, extensible meta-data, journaling or anti-fragmentation block sharing, were developed basically to increase performance and reliability.</p>
<p>All operating systems flavors always exposed file systems both as an API (for programmers) and through the (in)famous shell application (directly to users, programmers or not). The change from shells to visual file explorers can be seen as a natural consequence of a change in the perception of who was the REAL target audience of personal computers: non-programming users&#8230;</p>
<p>Initially computers came with only basic software: OS + file system + process management, a shell, and a programming language compiler, so the &#8220;user&#8221; could develop programs to automate his/hers personal tasks and help solving problems. Sometime during the late seventies/early eighties, the success of local software houses showed the existence of a huge market for off-the-shelf software products. The visual desktop (MacOS, Windows, Unix&#8217;s X window managers) was designed to resemble a real working desk, but there, somewhere in the corner of the room, the file cabinet analogy persisted.</p>
<p>However, criticism always existed, and together proposals for getting rid of this analogy: David Gelernter&#8217;s <a href="http://cs-www.cs.yale.edu/homes/freeman/lifestreams.html">Life Streams</a> were based on the perception (I&#8217;m not convinced of this) that humans organize their life experience as a timeline, and proposed to organize information (aka fine grained file objects) this way. This project never took of, but it&#8217;s an interesting read anyway. User interface super star Jacob Nielsen even proposed a nerd-friendly interface to replace the desktop analogy: <a href="http://www.useit.com/papers/anti-mac.html">Anti-mac interface</a>. I think both ideas really missed the point.</p>
<p>What actually happens is that files are not really important, data is not the key concept to our daily lives, but processes are. This means that file system interfaces are a bit like XML, a very good machine-readable format, but an awful interface to be directly exposed to the users. However, our digital lives were always dominated by the applications we use to help us with daily tasks: writing texts, listening to music, etc.</p>
<p>Evidence to show this importance is everywhere:</p>
<ul>
<li>Most of non-technical users I know always use the recently-opened documents list, or even open the application first, and looks for the document through the &#8220;Open File&#8221; explorer interface;</li>
<li>Most mac users don&#8217;t even know where their music files are, since it is much easier just to open iTunes and use its context-designed interface based on music meta-data such as artist, record, etc;</li>
<li>Have you ever felt the need to know where are the Google Docs files stored? Me neither&#8230;:)</li>
</ul>
<p>Based on this, I now completely understand Apple&#8217;s strategy of not exposing a file system interface to their iOS devices. The same happens to Google Docs and <a href="https://plus.google.com/photos/100238778462210489846/albums/5629087019815403777">this analysis</a> of their strategy for G+. In both cases, there are options to import/export &#8220;normal&#8221; files (through iTunes, and upload/download in case of gDocs), so there can be a smooth transition from the &#8220;old&#8221; paradigm. These options might always exist (even if only through hacks), since power users always want more control, but the thing is that for most users, dealing with files is not necessary at all.</p>
<p>I&#8217;d like to hear from anybody if you have evidence to the contrary (or supporting it). Now that cloud services are so much in evidence, is the normal user finally get rid of the FILE?</p>
<p>And please, I&#8217;m not defending Apple&#8217;s or Google&#8217;s policy in general, just observing a tendency in how people organize their personal content.</p>
<br /> Tagged: <a href='http://sertao3d.com/tag/essays/'>essays</a>, <a href='http://sertao3d.com/tag/internet/'>internet</a>, <a href='http://sertao3d.com/tag/programming/'>programming</a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/sertao3d.wordpress.com/632/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/sertao3d.wordpress.com/632/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/sertao3d.wordpress.com/632/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/sertao3d.wordpress.com/632/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/sertao3d.wordpress.com/632/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/sertao3d.wordpress.com/632/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/sertao3d.wordpress.com/632/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/sertao3d.wordpress.com/632/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/sertao3d.wordpress.com/632/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/sertao3d.wordpress.com/632/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/sertao3d.wordpress.com/632/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/sertao3d.wordpress.com/632/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/sertao3d.wordpress.com/632/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/sertao3d.wordpress.com/632/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=632&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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			<media:title type="html">erickpassos</media:title>
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		<title>The Open Internet and Content Generation</title>
		<link>http://sertao3d.com/2011/07/16/the-open-internet-and-content-generation/</link>
		<comments>http://sertao3d.com/2011/07/16/the-open-internet-and-content-generation/#comments</comments>
		<pubDate>Sat, 16 Jul 2011 21:41:13 +0000</pubDate>
		<dc:creator>erickpassos</dc:creator>
				<category><![CDATA[essays]]></category>
		<category><![CDATA[internet]]></category>

		<guid isPermaLink="false">http://sertao3d.com/?p=627</guid>
		<description><![CDATA[A short opinion piece. There&#8217;s much discussion about Google+ placement and strategy, specially when compared to facebook and twitter. I think many people just missed the point and I suggest checking this analysis to understand the grand design. It&#8217;s a very strong strategy to take the power from the Desktop OS after decades. One question is [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=627&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>A short opinion piece.</p>
<p>There&#8217;s much discussion about Google+ placement and strategy, specially when compared to facebook and twitter. I think many people just missed the point and I suggest checking <a href="https://plus.google.com/photos/100238778462210489846/albums/5629087019815403777">this analysis</a> to understand the grand design. It&#8217;s a very strong strategy to take the power from the Desktop OS after decades.</p>
<p>One question is fundamental in this matter: given that facebook&#8217;s news feed (status updates) is closed (you can&#8217;t read it from outside facebook&#8217;s interface, mashups are restricted to: like, follow, comments), some might say that being G+ open to any mashup the problem is solved. But there&#8217;s another problem: people has already stopped using email (in favor of FB&#8217;s personal messages), and most people don&#8217;t produce content (basically posts links to content they like).</p>
<p>So where does all this content (that we post as links) comes from? Blogs, news portals and the like. But apart from some personal bookmarks (mental or not), everybody looks for interesting content by using a search engine (or news feed search engine). So it is FUNDAMENTAL that the popular search engines remain unbiased.</p>
<p>Imagine if FB, releases a search engine from inside their interface. Do you think they&#8217;ll be as open as Google in separating real search results from ads (I honestly don&#8217;t know)? And what can be the implications to freedom of speech and the role of the press? Who governs how FB (or Google) filters the way we find content?</p>
<p>I decided to write this because after joining FB, and more recently G+, I was wondering if I still needed this site/blog. Then I remembered that I still need to keep resources to my students, and after that I decided that it is important to keep content distributed through different providers (google, wordpress, fb, twitter, and others) since it&#8217;s the competition which, in the end, might help us avoid the Orwellian society nightmare.</p>
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			<media:title type="html">erickpassos</media:title>
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		<title>Linux: My First Contact</title>
		<link>http://sertao3d.com/2011/07/16/linux-my-first-contact/</link>
		<comments>http://sertao3d.com/2011/07/16/linux-my-first-contact/#comments</comments>
		<pubDate>Sat, 16 Jul 2011 21:23:41 +0000</pubDate>
		<dc:creator>erickpassos</dc:creator>
				<category><![CDATA[internet]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[programming]]></category>
		<category><![CDATA[stories]]></category>

		<guid isPermaLink="false">http://sertao3d.com/?p=625</guid>
		<description><![CDATA[This one is for the nerds, naive and passionate about technology. It&#8217;s just something to remember. A snapshot of a time when the term hacker was still used to referring people who just loved knowing how stuff works, and not the headless bankers of today. I remember the dawn of public internet in Brazil. It was [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=625&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>This one is for the nerds, naive and passionate about technology. It&#8217;s just something to remember. A snapshot of a time when the term hacker was still used to referring people who just loved knowing how stuff works, and not the headless bankers of today.</p>
<p>I remember the dawn of public internet in Brazil. It was early 1996 when I signed up as the 5th user of a local ISP in Fortaleza-CE (Roadnet was its name). At that time, everything was nerdy and amazing (a bit naive as well). To grok C, makefiles, TCP/IP, telnet, ssh, ftp and other underlying technical foundations was something to brag about, and somehow a consequence of the love we all had for the new star OS: Linux&#8230;</p>
<p>The first time I had contact with Linux was also in 1996. My uncle &#8220;Sizoca&#8221; presented me me a CD with the Slackware 3.0 distro. I remember the stable kernel that came with it was 1.2.13, and 1.3.18 the beta one. Early days yet indeed&#8230;:) Me and friends Mateus and Carlos spent all night long trying to do a very careful install, custom designed to fit all of Mateus&#8217;s PC specs. Madly enough, we read every package description before opting to install it or not.</p>
<p>It was around 4pm when we started to configure the custom kernel compilation. Manually choosing which drivers (and their options) to include for network, sound and other hardware adapters was exciting, and used to give us the sensation that our fine-tunned kernel would give us blazing speed, exploiting all of the available BOGOMIPS power of the underlying machine. That was before the popularization of loadable kernel modules, which basically rendered custom kernel compilation unnecessary for future distros/installs.</p>
<p>Following the boot-up process was mind-blowing. I remember somebody commenting this: &#8220;do you know why there are so many strange messages during the boot process? It&#8217;s because Linux is actually using all of your computer resources, instead of hiding this from you&#8221;. Lol, one can argue that the comment is not actually true, but it is funny to see how a technology can make someone passionate about it.</p>
<p>Accessing the internet with your carefully configured Linux box used to give you that felling of safety and power over the mere mortals. Even if it was impossible to use WinModems (ruim-modems, as we used to say in portuguese), creating shell scripts to automate the dial-up process was a pleasure, in the same way planning a play as a child was much better then playing it itself. Doing it from a Linux-powered (by hand, not factory default as crappy netbooks of today) was even better.</p>
<p>Things I remember and miss (more or less):</p>
<ul>
<li>BitchX</li>
<li>Lynx</li>
<li>Doom</li>
<li>XF86Config</li>
<li>make xconfig</li>
<li>the &#8220;./configure &#8211; make &#8211; make install&#8221; loop</li>
<li>man pages</li>
<li>The Enlightenment Window Manager</li>
</ul>
<p><span style="font-size:small;"><span class="Apple-style-span" style="line-height:24px;">Did I forget anything important? I&#8217;ll finish with a personal opinion:</span></span></p>
<p>Now that Linux is pretty much consolidated in the server and embedded (mobile included) market. However, I still think it haven&#8217;t (and never will) got a place in the ordinary user Desktop. Given that Linux&#8217;s future is well secured because of its relevance in the server/embedded/mobile space, why waste energy trying to convince people to use it in the Desktop? Nerds still love to have something to call their own, and theirs only&#8230;:)</p>
<br /> Tagged: <a href='http://sertao3d.com/tag/internet/'>internet</a>, <a href='http://sertao3d.com/tag/linux/'>linux</a>, <a href='http://sertao3d.com/tag/programming/'>programming</a>, <a href='http://sertao3d.com/tag/stories/'>stories</a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/sertao3d.wordpress.com/625/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/sertao3d.wordpress.com/625/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/sertao3d.wordpress.com/625/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/sertao3d.wordpress.com/625/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/sertao3d.wordpress.com/625/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/sertao3d.wordpress.com/625/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/sertao3d.wordpress.com/625/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/sertao3d.wordpress.com/625/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/sertao3d.wordpress.com/625/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/sertao3d.wordpress.com/625/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/sertao3d.wordpress.com/625/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/sertao3d.wordpress.com/625/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/sertao3d.wordpress.com/625/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/sertao3d.wordpress.com/625/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=625&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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			<media:title type="html">erickpassos</media:title>
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		<title>NETRA/CATRA Wins Vodafone Foundation&#8217;s Wireless Innovation Project Award</title>
		<link>http://sertao3d.com/2011/04/13/catra-wins-vodafone-foundations-wireless-innovation-project-award/</link>
		<comments>http://sertao3d.com/2011/04/13/catra-wins-vodafone-foundations-wireless-innovation-project-award/#comments</comments>
		<pubDate>Wed, 13 Apr 2011 01:45:31 +0000</pubDate>
		<dc:creator>erickpassos</dc:creator>
				<category><![CDATA[MIT]]></category>
		<category><![CDATA[news]]></category>
		<category><![CDATA[vision]]></category>

		<guid isPermaLink="false">http://sertao3d.com/?p=577</guid>
		<description><![CDATA[I&#8217;m pleased to announce that NETRA/CATRA, our project on self-assessment devices to detect and measure eye problems has won the 1st prize in the Vodafone America&#8217;s Foundation Wireless Innovation Project: We&#8217;re very happy with this prize, that granted more U$ 300k to continue pursuing our goal of helping people to become more aware of their [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=577&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>I&#8217;m pleased to announce that NETRA/CATRA, our project on self-assessment devices to detect and measure eye problems has won the 1st prize in the Vodafone America&#8217;s Foundation Wireless Innovation Project:</p>
<p><a href="http://sertao3d.files.wordpress.com/2011/04/badge-voda.png"><img class="alignnone size-medium wp-image-578" title="badge-voda" src="http://sertao3d.files.wordpress.com/2011/04/badge-voda.png?w=297&#038;h=300" alt="" width="297" height="300" /></a></p>
<p>We&#8217;re very happy with this prize, that granted more U$ 300k to continue pursuing our goal of helping people to become more aware of their vision capabilities and limitations.</p>
<p>Meanwhile, we still need your help to win the MIT Global Challenge award and grant U$ 25k to help the world&#8217;s largest eye institute (LV Prasad/India) do field tests of our new device to detect and quantify cataracts. Please, register and vote for us:</p>
<p><a href="http://globalchallenge.mit.edu/teams/view/200">NETRA/CATRA at the MIT Global Challenge</a></p>
<p>More info:</p>
<p><a href="http://eyecatra.com">CATRA Project Website</a></p>
<p><a href="http://eyenetra.com">NETRA Project Website</a></p>
<p>In the news:</p>
<p><a href="http://www.sunherald.com/2011/04/12/3020628/three-pioneering-projects-win.html">Sun Herald</a></p>
<p><a href="http://www.businesswire.com/news/home/20110412005810/en/Pioneering-Projects-Win-Coveted-Vodafone-mHealth-Alliance">Business Wire</a></p>
<br /> Tagged: <a href='http://sertao3d.com/tag/mit/'>MIT</a>, <a href='http://sertao3d.com/tag/news/'>news</a>, <a href='http://sertao3d.com/tag/vision/'>vision</a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/sertao3d.wordpress.com/577/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/sertao3d.wordpress.com/577/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/sertao3d.wordpress.com/577/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/sertao3d.wordpress.com/577/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/sertao3d.wordpress.com/577/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/sertao3d.wordpress.com/577/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/sertao3d.wordpress.com/577/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/sertao3d.wordpress.com/577/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/sertao3d.wordpress.com/577/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/sertao3d.wordpress.com/577/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/sertao3d.wordpress.com/577/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/sertao3d.wordpress.com/577/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/sertao3d.wordpress.com/577/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/sertao3d.wordpress.com/577/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=577&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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			<media:title type="html">erickpassos</media:title>
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		<title>CATRA: Detection and Mapping of Cataracts Through  an Interactive Approach</title>
		<link>http://sertao3d.com/2011/03/10/motia-detection-and-mapping-of-cataracts-through-an-interactive-approach/</link>
		<comments>http://sertao3d.com/2011/03/10/motia-detection-and-mapping-of-cataracts-through-an-interactive-approach/#comments</comments>
		<pubDate>Thu, 10 Mar 2011 19:30:27 +0000</pubDate>
		<dc:creator>erickpassos</dc:creator>
				<category><![CDATA[MIT]]></category>
		<category><![CDATA[vision]]></category>

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		<description><![CDATA[This is the main research project I&#8217;ve been collaborating with during my stay at the MIT Media Lab. It&#8217;s the design of an optical device, plus a series of interaction techniques, which for instance can be devised in a smart phone, to detect and map cataract spots in the human eye. There&#8217;re many interesting aspects [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=570&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>This is the main research project I&#8217;ve been collaborating with during my stay at the MIT Media Lab. It&#8217;s the design of an optical device, plus a series of interaction techniques, which for instance can be devised in a smart phone, to detect and map cataract spots in the human eye. There&#8217;re many interesting aspects of this work, but the most important contributions to the scientific community are:</p>
<ul>
<li>A co-design of optics and interactive software. Collimated beams of light scan through sub-apertures of the crystallin lens in order to screen for cataract opacities. There are no moving parts, to increase safety and accuracy of the technique, and the device can be composed of a smart phone with a clip-on attachment.</li>
<li>Four interactive methods to assess size, position, contrast and point-spread function (PSF) of cataracts in the human eye. There&#8217;s no need for a trained clinician since the interaction if very simple and based on straightforward visual tasks. These methods can also be used to detect opacities in other types of optical systems such as camera lenses.</li>
<li>A rendering module that simulates the vision of a cataract-affected eye, based on the real data extracted from the test on an individual. This image-based simulated rendering takes into account physical phenomena such as diffraction and depth-of-field, based on detailed eye parameters such as accommodation, pupil size, and the maps generated by our device in a cataract screening test.</li>
</ul>
<p>We&#8217;ve got a paper <strong>accepted</strong> for SIGGRAPH &#8217;11 describing the device, the interactive techniques, the simulated rendering, and also showing the results of our evaluations. From the paper abstract:</p>
<p style="padding-left:30px;">&#8220;<em>We introduce a novel interactive method to assess cataracts in the human eye by crafting an optical solution that measures the perceptual impact of forward scattering on the foveal region. Current solutions rely on highly-trained clinicians to check the back scattering in the crystallin lens and test their predictions on visual acuity tests. Close-range parallax barriers create collimated beams of light to scan through sub-apertures scattering light as it strikes a cataract. User feedback generates maps for opacity, attenuation, contrast and local point-spread functions. The goal is to allow a general audience to operate a portable high-contrast light-field display to gain a meaningful understanding of their own visual conditions. The compiled maps are used to reconstruct the cataract-affected view of an individual, offering a unique approach for capturing information for screening, diagnostic, and clinical analysis.</em>&#8220;</p>
<p>More information:</p>
<p><a href="http://web.media.mit.edu/~pamplona/MOTIA/">Official Website</a></p>
<p><a href="http://web.media.mit.edu/~pamplona/MOTIA/Pamplona_et_al_SIGGRAPH_2011.pdf">Paper</a></p>
<p>Some images from the project:</p>
<div id="attachment_561" class="wp-caption alignnone" style="width: 310px"><a href="http://sertao3d.files.wordpress.com/2009/10/prot_cellphone.jpg"><img class="size-medium wp-image-561" title="prot_cellphone" src="http://sertao3d.files.wordpress.com/2009/10/prot_cellphone.jpg?w=300&#038;h=200" alt="Smart phone prototype" width="300" height="200" /></a><p class="wp-caption-text">Smart phone prototype</p></div>
<div id="attachment_563" class="wp-caption alignnone" style="width: 310px"><a href="http://sertao3d.files.wordpress.com/2009/10/img_1453.jpg"><img class="size-medium wp-image-563" title="IMG_1453" src="http://sertao3d.files.wordpress.com/2009/10/img_1453.jpg?w=300&#038;h=200" alt="Controlled evaluation" width="300" height="200" /></a><p class="wp-caption-text">Controlled evaluation</p></div>
<div id="attachment_564" class="wp-caption alignnone" style="width: 310px"><a href="http://sertao3d.files.wordpress.com/2009/10/img_1651.jpg"><img class="size-medium wp-image-564" title="IMG_1651" src="http://sertao3d.files.wordpress.com/2009/10/img_1651.jpg?w=300&#038;h=200" alt="Manually Operated Prototype" width="300" height="200" /></a><p class="wp-caption-text">Manually Operated Prototype</p></div>
<div id="attachment_565" class="wp-caption alignnone" style="width: 310px"><a href="http://sertao3d.files.wordpress.com/2009/10/rendering.png"><img class="size-medium wp-image-565" title="rendering" src="http://sertao3d.files.wordpress.com/2009/10/rendering.png?w=300&#038;h=178" alt="Simulated Rendering of Cataracts-affected Vision" width="300" height="178" /></a><p class="wp-caption-text">Simulated Rendering of Cataracts-affected Vision</p></div>
<br /> Tagged: <a href='http://sertao3d.com/tag/mit/'>MIT</a>, <a href='http://sertao3d.com/tag/vision/'>vision</a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/sertao3d.wordpress.com/570/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/sertao3d.wordpress.com/570/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/sertao3d.wordpress.com/570/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/sertao3d.wordpress.com/570/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/sertao3d.wordpress.com/570/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/sertao3d.wordpress.com/570/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/sertao3d.wordpress.com/570/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/sertao3d.wordpress.com/570/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/sertao3d.wordpress.com/570/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/sertao3d.wordpress.com/570/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/sertao3d.wordpress.com/570/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/sertao3d.wordpress.com/570/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/sertao3d.wordpress.com/570/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/sertao3d.wordpress.com/570/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=570&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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			<media:title type="html">erickpassos</media:title>
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			<media:title type="html">prot_cellphone</media:title>
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			<media:title type="html">rendering</media:title>
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		<title>Color Correction</title>
		<link>http://sertao3d.com/2011/01/27/color-correctio/</link>
		<comments>http://sertao3d.com/2011/01/27/color-correctio/#comments</comments>
		<pubDate>Thu, 27 Jan 2011 07:02:55 +0000</pubDate>
		<dc:creator>erickpassos</dc:creator>
				<category><![CDATA[MIT]]></category>

		<guid isPermaLink="false">http://sertao3d.com/?p=532</guid>
		<description><![CDATA[For the trolls who insisted that snow is white, here are the color-corrected versions of some of the pictures from the last post. But the light sources were incandescent bulbs, so it actually looked very yellowish from the naked eye. Tagged: MIT<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=532&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>For the trolls who insisted that snow is white, here are the color-corrected versions of some of the pictures from the last post. But the light sources were incandescent bulbs, so it actually looked very yellowish from the naked eye.</p>

<a href='http://sertao3d.com/2011/01/27/color-correctio/dsc_0452-2/' title='Food Truck (with white snow)'><img data-attachment-id='533' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_04521.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="Food Truck (with white snow)" title="Food Truck (with white snow)" /></a>
<a href='http://sertao3d.com/2011/01/27/color-correctio/dsc_0457-2/' title='Bus Stop (with white snow)'><img data-attachment-id='534' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_04571.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="Bus Stop (with white snow)" title="Bus Stop (with white snow)" /></a>
<a href='http://sertao3d.com/2011/01/27/color-correctio/dsc_0459-2/' title='Westgate (with white(r) snow)'><img data-attachment-id='535' data-orig-size='2592,3872' data-liked='0'width="100" height="150" src="http://sertao3d.files.wordpress.com/2011/01/dsc_04591.jpg?w=100&#038;h=150" class="attachment-thumbnail" alt="Westgate (with white snow)" title="Westgate (with white(r) snow)" /></a>
<a href='http://sertao3d.com/2011/01/27/color-correctio/dsc_0463-2/' title='Pine Trees (with white snow)'><img data-attachment-id='536' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_04631.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="Pine Trees (with white snow)" title="Pine Trees (with white snow)" /></a>
<a href='http://sertao3d.com/2011/01/27/color-correctio/dsc_0473-2/' title='Random Car (with white snow)'><img data-attachment-id='537' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_04731.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="Random Car (with white snow)" title="Random Car (with white snow)" /></a>
<a href='http://sertao3d.com/2011/01/27/color-correctio/dsc_0499-2/' title='Tree Bark (with white snow)'><img data-attachment-id='539' data-orig-size='2592,3872' data-liked='0'width="100" height="150" src="http://sertao3d.files.wordpress.com/2011/01/dsc_04991.jpg?w=100&#038;h=150" class="attachment-thumbnail" alt="Tree Bark (with white snow)" title="Tree Bark (with white snow)" /></a>
<a href='http://sertao3d.com/2011/01/27/color-correctio/dsc_0483-2/' title='Iglu (of white snow)'><img data-attachment-id='545' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_04832.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="Iglu (of snow white)" title="Iglu (of white snow)" /></a>

<br /> Tagged: <a href='http://sertao3d.com/tag/mit/'>MIT</a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/sertao3d.wordpress.com/532/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/sertao3d.wordpress.com/532/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/sertao3d.wordpress.com/532/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/sertao3d.wordpress.com/532/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/sertao3d.wordpress.com/532/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/sertao3d.wordpress.com/532/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/sertao3d.wordpress.com/532/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/sertao3d.wordpress.com/532/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/sertao3d.wordpress.com/532/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/sertao3d.wordpress.com/532/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/sertao3d.wordpress.com/532/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/sertao3d.wordpress.com/532/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/sertao3d.wordpress.com/532/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/sertao3d.wordpress.com/532/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=532&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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			<media:title type="html">erickpassos</media:title>
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		<media:content url="http://sertao3d.files.wordpress.com/2011/01/dsc_04521.jpg?w=150" medium="image">
			<media:title type="html">Food Truck (with white snow)</media:title>
		</media:content>

		<media:content url="http://sertao3d.files.wordpress.com/2011/01/dsc_04571.jpg?w=150" medium="image">
			<media:title type="html">Bus Stop (with white snow)</media:title>
		</media:content>

		<media:content url="http://sertao3d.files.wordpress.com/2011/01/dsc_04591.jpg?w=100" medium="image">
			<media:title type="html">Westgate (with white(r) snow)</media:title>
		</media:content>

		<media:content url="http://sertao3d.files.wordpress.com/2011/01/dsc_04631.jpg?w=150" medium="image">
			<media:title type="html">Pine Trees (with white snow)</media:title>
		</media:content>

		<media:content url="http://sertao3d.files.wordpress.com/2011/01/dsc_04731.jpg?w=150" medium="image">
			<media:title type="html">Random Car (with white snow)</media:title>
		</media:content>

		<media:content url="http://sertao3d.files.wordpress.com/2011/01/dsc_04991.jpg?w=100" medium="image">
			<media:title type="html">Tree Bark (with white snow)</media:title>
		</media:content>

		<media:content url="http://sertao3d.files.wordpress.com/2011/01/dsc_04832.jpg?w=150" medium="image">
			<media:title type="html">Iglu (of white snow)</media:title>
		</media:content>
	</item>
		<item>
		<title>Winter Photos</title>
		<link>http://sertao3d.com/2011/01/27/winter-photos/</link>
		<comments>http://sertao3d.com/2011/01/27/winter-photos/#comments</comments>
		<pubDate>Thu, 27 Jan 2011 06:42:32 +0000</pubDate>
		<dc:creator>erickpassos</dc:creator>
				<category><![CDATA[MIT]]></category>

		<guid isPermaLink="false">http://sertao3d.com/?p=517</guid>
		<description><![CDATA[Just a bunch of pictures I&#8217;ve been taking during the winter at the MIT: Tagged: MIT<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=517&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Just a bunch of pictures I&#8217;ve been taking during the winter at the MIT:
<a href='http://sertao3d.com/2011/01/27/winter-photos/dsc_0452/' title='Food truck'><img data-attachment-id='518' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_0452.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="Food truck covered in snow after a Blizzard" title="Food truck" /></a>
<a href='http://sertao3d.com/2011/01/27/winter-photos/dsc_0457/' title='Bus Stop'><img data-attachment-id='519' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_0457.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="Bus stop in front of my apartment" title="Bus Stop" /></a>
<a href='http://sertao3d.com/2011/01/27/winter-photos/dsc_0459/' title='Westgate'><img data-attachment-id='520' data-orig-size='2592,3872' data-liked='0'width="100" height="150" src="http://sertao3d.files.wordpress.com/2011/01/dsc_0459-e1296110744307.jpg?w=100&#038;h=150" class="attachment-thumbnail" alt="Westgate building, grad-student&#039;s family housing where I live" title="Westgate" /></a>
<a href='http://sertao3d.com/2011/01/27/winter-photos/dsc_0463/' title='Pine Trees'><img data-attachment-id='521' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_0463.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="Pine Trees in front of Westgate" title="Pine Trees" /></a>
<a href='http://sertao3d.com/2011/01/27/winter-photos/dsc_0465/' title='Pine Trees 2'><img data-attachment-id='522' data-orig-size='2592,3872' data-liked='0'width="100" height="150" src="http://sertao3d.files.wordpress.com/2011/01/dsc_0465-e1296110725309.jpg?w=100&#038;h=150" class="attachment-thumbnail" alt="Pine Trees in front of Westgate Building" title="Pine Trees 2" /></a>
<a href='http://sertao3d.com/2011/01/27/winter-photos/dsc_0469/' title='8 inches'><img data-attachment-id='523' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_0469.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="20cm (8in) of snow that day" title="8 inches" /></a>
<a href='http://sertao3d.com/2011/01/27/winter-photos/dsc_0473/' title='Random car'><img data-attachment-id='524' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_0473.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="At the westgate parking lot" title="Random car" /></a>
<a href='http://sertao3d.com/2011/01/27/winter-photos/dsc_0483/' title='Iglu'><img data-attachment-id='525' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_0483.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="(they tried) Eskimo house at MIT&#039;s Briggs Field" title="Iglu" /></a>
<a href='http://sertao3d.com/2011/01/27/winter-photos/dsc_0498/' title='Bushes'><img data-attachment-id='526' data-orig-size='3872,2592' data-liked='0'width="150" height="100" src="http://sertao3d.files.wordpress.com/2011/01/dsc_0498.jpg?w=150&#038;h=100" class="attachment-thumbnail" alt="Bushes with some snow" title="Bushes" /></a>
<a href='http://sertao3d.com/2011/01/27/winter-photos/dsc_0499/' title='Tree Bark'><img data-attachment-id='527' data-orig-size='2592,3872' data-liked='0'width="100" height="150" src="http://sertao3d.files.wordpress.com/2011/01/dsc_0499-e1296110702782.jpg?w=100&#038;h=150" class="attachment-thumbnail" alt="Tree bark covered in snow" title="Tree Bark" /></a>
</p>
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			<media:title type="html">Food truck</media:title>
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			<media:title type="html">Pine Trees</media:title>
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			<media:title type="html">8 inches</media:title>
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			<media:title type="html">Bushes</media:title>
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			<media:title type="html">Tree Bark</media:title>
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		<title>Siggraph Post-mortem, part 2</title>
		<link>http://sertao3d.com/2011/01/21/siggraph-post-mortem-part-2/</link>
		<comments>http://sertao3d.com/2011/01/21/siggraph-post-mortem-part-2/#comments</comments>
		<pubDate>Fri, 21 Jan 2011 19:41:16 +0000</pubDate>
		<dc:creator>erickpassos</dc:creator>
				<category><![CDATA[MIT]]></category>
		<category><![CDATA[news]]></category>

		<guid isPermaLink="false">http://sertao3d.com/?p=515</guid>
		<description><![CDATA[Now it&#8217;s time to talk about the things that didn&#8217;t work so well: File sharing: Yeah, I told that this worked quite well, but we also had our hustles with it. First, we were sharing files with 6 people through Dropbox, and some of them had reached their space limit. Having to delete things in [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=515&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Now it&#8217;s time to talk about the things that didn&#8217;t work so well:</p>
<ul>
<li><strong>File sharing</strong>: Yeah, I told that this worked quite well, but we also had our hustles with it. First, we were sharing files with 6 people through Dropbox, and some of them had reached their space limit. Having to delete things in a rush in order to have a new rendered paper updated is not the safest thing one can do. Second, although we used version control for the paper itself, we didn&#8217;t want to deal with merging and conflict resolution on Latex files, especially at 4am on deadline&#8217;s eve. So, we decided to use a &#8220;token&#8221; for some of the files, which was a bit messy sometimes. Next time I&#8217;ll make sure we use a locking mechanism or a better communication schedule.</li>
<li><strong>Communication</strong>: although we coordinated things quite well during the process, some things could&#8217;ve worked better. First, the mail server of one of our collaborators from abroad stopped working close to the deadline, leaving him almost &#8220;isolated&#8221; during the last 10 hours. Second, next time I&#8217;d make sure we schedule more group meetings through instant messengers, as those greatly improved the overall organization.</li>
<li><strong>Prototype building</strong>. Although we had some design and building skills, our prototypes could be greatly improved if we had somebody with more experience in hardware dedicated to that task. Our sub-group comprised mostly of computer scientists, which is quite unusual in the camera culture group (most people are engineers or physicists). In the end we had nice prototypes, and the issues we had with technology were all detailed in the limitations section of the paper, but this is something we can still improve.</li>
</ul>
<p>Of course there are more details, but I really can&#8217;t share them at this moment because they are related to the research subject. To finish, I&#8217;d like to acknowledge our team and some others who collaborated with the project: <a href="http://vitorpamplona.com/">Vitor Pamplona</a>, Jan Zizka, <a href="http://everettlawson.com/">Everett Lawson</a>, <a href="http://media.mit.edu/~raskar">Ramesh Raskar</a>, <a href="http://www.inf.ufrgs.br/~oliveira/">Manoel Oliveira</a> and <a href="http://www.ic.uff.br/~esteban">Esteban Clua</a> were directly involved with the project and paper; <a href="http://www.pedrothiago.com/">Pedro Thiago</a> created nice 3d renders to illustrate some concepts, Cintia Bartz was photographed and filmed using the prototypes, which is included both in the paper and as extra material sent to the reviewers; Taya Leary for keeping our lab area full of food all the time; Andy, Doug, Abhi and the others from the Camera Culture group for the comments and the great time we had this season.</p>
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		<title>Siggraph Post-mortem, part 1</title>
		<link>http://sertao3d.com/2011/01/19/siggraph-post-mortem-part-1/</link>
		<comments>http://sertao3d.com/2011/01/19/siggraph-post-mortem-part-1/#comments</comments>
		<pubDate>Wed, 19 Jan 2011 09:38:43 +0000</pubDate>
		<dc:creator>erickpassos</dc:creator>
				<category><![CDATA[MIT]]></category>
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		<guid isPermaLink="false">http://sertao3d.com/?p=513</guid>
		<description><![CDATA[Yesterday was ACM Siggraph&#8216;s deadline for technical papers. Since mid-november I&#8217;ve been working on two research projects here at the MIT Media Lab&#8216;s Camera Culture group, eventually expecting to write papers about them during this period, known to us as &#8220;Siggraph Season&#8221;. One of the projects eventually took off and we were able to finish [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=sertao3d.com&amp;blog=3985857&amp;post=513&amp;subd=sertao3d&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Yesterday was <a href="http://www.siggraph.org">ACM Siggraph</a>&#8216;s deadline for technical papers. Since mid-november I&#8217;ve been working on two research projects here at the <a href="http://media.mit.edu">MIT Media Lab</a>&#8216;s <a href="http://cameraculture.media.mit.edu">Camera Culture</a> group, eventually expecting to write papers about them during this period, known to us as &#8220;Siggraph Season&#8221;. One of the projects eventually took off and we were able to finish a nice paper in time, which we hope will be accepted and well received by the community.</p>
<p>Although I still can&#8217;t comment on the subject our research, here are some highlights about the process, and the eventual submission of a paper for Siggraph:</p>
<ul>
<li>Good ideas need a lot of time to mature. The best projects, those that eventually get submitted as a paper, normally stay around for some years before getting in shape, some are even revisited ideas.</li>
<li>Research doesn&#8217;t come out of nothing. We need to put a LOT of effort into reading, understanding and addressing previous work, developing the new idea (from idea to concept, from concept to model, from model to working prototypes), and finally rendering a paper and supplementary material.</li>
<li>It&#8217;s also a teamwork. There is no way one can do it all alone. First, there&#8217;s simply too many things to be done. Second, people have different preferences. In this type of process, every skill can become handful, such as knowing how to use a soldering iron, design a new circuit board, create good audio recordings, etc.</li>
<li>It seems odd to spend the last two months working 12 to 14 hours every day (including weekends, christmas, new year&#8217;s eve and any other holiday) and end up with a simple prototype, 6 to 8 pages of dense text, a 4 to 5 minutes video and some representative images.</li>
<li>At the same time, it&#8217;s remarkable how much knowledge and information you can gather, process and absorb in two months, even if you&#8217;re applying your skills in new field, one that you&#8217;re not very familiar with.</li>
</ul>
<p>Things that worked for us:</p>
<ul>
<li><strong>Teamwork</strong>. We got along quite well and there were no hustles inside the team. Each one had his own rhythm and also preferences, and the process of task assignment occurred naturally at most times.</li>
<li><strong>File-sharing.</strong> We&#8217;ve used both version control (svn and git), and <a href="http://dropbox.com">Dropbox</a>, for different purposes and at different moments. For most of the basic work, Dropbox is quite handy, because of its ease of use and ubiquiitousity.</li>
<li><strong>Shared writing and pair reviewing</strong>. We shared the writing responsibility among three team members, and, in the end, all sections that we initially planned for the paper were written. The reviewing tasks at the polishing stage was done in pairs, sometimes in trios. This was very successful, and I personally think the quality of the final text greatly benefit from this.</li>
<li><strong>Early writing and external reviews</strong>. We started to write the papers (we didn&#8217;t know at the beginning which ones would make it) very early. Invited reviewers that read the early drafts and other collaborators that knew about the project provided valuable comments.</li>
</ul>
<p>In the next post I&#8217;ll talk about what didn&#8217;t work quite so well.</p>
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