soa mėnuo
mėnesio pradžioje keliavau į taliną sudalyvauti BEA apmokymuose apie SOA. nežinantiems – tai šiuo metu populiariausias
buzzwordas IT sistemų valdymo srityje. nors iš soa pusės kursai nebuvo ypatingai stiprūs, bet gavau puikią progą susipažinti su visa weblogic produktų linija. kolega ago parašė savo požiūrį į soa. aš tik nesutinku, kad OOP netinka verslo sistemoms. pačios programos, kurios sudaro verslo sistemą gali ir tikriausiai turi būti įgyvendintos pasitelkus OOP, tačiau jų integravimui taikyti distributed objects ir rpc – netinkamas sprendimas. iki kursų maniau, kad gana svarbus rpc naudojimo pasiteisinimas – įrankių palaikymas, bet pamatęs, kaip weblogic workshop keliais pelės kliktelėjimais pagal nutylėjimą generuoja document/literal web servisus, manau, kad šiuo metu liekant prie rpc reikia tikrai svarių argumentų.
praeitą savaitę nuvykom į prahą, kurioje vyko bea world 2005 konferencija. jos pagrindinė tema irgi buvo soa. pirmąkart dalyvavau tokio tipo renginyje. didžiąją laiko dalį vienu metu vyko net keturios sesijos, todėl buvo sunku išsirinkti į kur eiti. teko pamatyti gyvą Rod Johnson, kuris buvo vienintelis celebritis, kurį aš pažinojau :) visas prezentacijas galima rasti online, bet powerpointai be garso mažai ką sako.
lapkričio pradžioje tikiuosi nuvyksiu į sun renginį, kuriame man galbūt išvalys bea propaganda užterštas smegenis :)
pkmk tmblr
iškarpos iš interneto. sukauptos per tumblr.com servisą. nereguliariai ir neįpareigojančiai.
The New York Times does not use Web metrics to determine how articles are presented, but it does use them to make strategic decisions about its online report. We don’t let metrics dictate our assignments and play, because we believe readers come to us for our judgment, not the judgment of the crowd. We’re not ‘American Idol.’
Bill Keller (via soupsoup)
TSP art
The traveling salesman problem (TSP) is an old and well-studied problem in computer science. Given a collection of cities on a map, a salesman must make a tour of the cities, visiting each once, and returning to the city from which he started. Of all the ways that he could travel from city to city, he must find the one that requires him to travel the least total distance (our salesman is nothing if not frugal). Mathematically, we can view this form of the TSP as finding the minimum length closed path connecting a collection of points in the plane.
We can exploit this relationship to produce a new halftoning algorithm (halftoning is any process that approximates a continuous-toned image with black-and-white marks). We distribute cities with a density that locally approximates the darkness of a source image, and pass the cities to a program that finds a TSP tour. The result is a kind of twisty closed path that resembles the original image.
People can be teachers and idiots; they can be philosophers and idiots; they can be politicians and idiots … in fact I think they have to be … a genius can be an idiot. The world is largely run for and by idiots; it is no great handicap in life and in certain areas is actually a distinct advantage and even a prerequisite for advancement.
Iain Banks, The Crow Road. (via travors)
At the very least, outsiders need to understand that China is controlled for the benefit of insiders. The insiders know when to sell, and so one would expect the businesses that have been made available to the outside world systematically to underperform those ventures still controlled by card-carrying members of the Chinese Communist Party. “China” will underperform China, and a “China” bubble exists to the extent that investors underestimate the degree of this underperformance.
The Optimistic Thought Experiment | Hoover Institution (via Instapaper)
Under more normal circumstances, one would not have thought that the same mistake could happen twice in the lifetimes of the people involved. One might be tempted to invoke extraordinary psychosocial explanations — for example, that all of this was driven by baby boomers who destroyed their minds on drugs in the 1960s and therewith merit the dubious distinction of being America’s Dumbest Generation.
The Optimistic Thought Experiment | Hoover Institution (via Instapaper)
Apocalyptic investors will miss great opportunities if there is no apocalypse, but ultimately they will end up with nothing when the apocalypse arrives. Heads or tails, they lose.
The Optimistic Thought Experiment | Hoover Institution (via Instapaper)
adomas 2005.10.29 04:25
Hmm… jei pries keleta savaiciu pastebejau kad sio blogo autorius skaitineja tuos pacius saltinius apie SOA kaip ir as, tai dabar ziuriu, kad ir i tuos pacius renginius (BEAWorld) vazinejame, tiesa as buvau londone… :D
Kas idomiausia, siandien studentams (sykiu ir sau, o gal net labiau sau) bandziau aiskinti kada taikyti servisus, kada rpc – butent “svarius argumentus”, kaip autorius issireiskia. Tiesa, tie argumentai pagristi visai ne tuo, kad rpc atsisakoma tada, kai atsiranda toolsai, kurie is komponentu generuoja servisus. Esme tame, kad komponentai ir servisai 1:1 nesimapina vieni i kitus, taigi choicas gludi kitur. kur? bandziau aiskinti – http://www.mif.vu.lt/~adam/courses/wsgrid/ch1_05.html , sykiu shakin’damas off BEA ipusta bias’a – cia emiuosi IBM “ismintim”.
anyway, sio blogo citatos man patinka – ypac kai jose pamaciau JBOWS santrumpa, kuria nepriklausomai aptikau kazkur ta pacia diena, is esmes guglinimas ieskant kitu JBOWS pavartojimu ir atvede mane i si bloga :D
sekmes