Neobicni naucni radovi

[bus]

Neam pojma, oni su pričali o tome da je to što se često da pročitati u stvari mean life expectancy i da su cifre iskrivljene zbog velikog mortaliteta beba. Sad da li je to ili nije, ja nisam kompetentan da kažem.Edit>Naleteh sad na ovo. U Starom Rimu je na rodjenju life expectancy bio 25 godina. Ko preživi do desete, mogao je da se nada da će prebaciti pedesetu. Ko preživi do tridesete, mogao je da se nada da će stići do tu negde 62-3e.

Edited November 16, 2010 by bus

[Indy]

На жалост, ми и данас на планети имамо подручја која нису различита од преиндустријског периода, а нису превише одмакла ни од преисторијског. Није потребна нека нарочита компентенција да се интерпретира оно што нам то показује. Може да се каже да је и давној прошлости било доста старих људи и да статистика о просечном људском веку то крије (посебно због смртности беба), међутим начин на који су то они формулисали је као да је то нека велика заблуда мислити да су некада људи живели много краће.Али, то је био само мој успутни мали коментар, а некако изгледа као страшно озбиљна критика због ове ћирилице (или се ја још нисам навикао на њу).

[BraveMargot]

u starom rimu je infanticid bio jako cest, sto se mora uzeti u obzir kada se gleda projektovana duzina zivota.bas je nedavno pisalo o tome u times literary supplementu, u prikazu knjige koja je naduvavala broj stanovnika judeje jevrejske vere u periodu od 2 do 6 veka nove ere na osnovu pukog nataliteta, najpre zbog toga sto ih je mnogo veci broj bio rodjen (njihova vera nije dozvoljavala cedomorstvo) ali ne bi preziveo do u duboku starost.dakle, sto se tice rimskog perioda, onaj koga bi roditelji zeleli, imao je priliku da gura do otprilike 50te. nema tu velike mudrosti, no statistika se da obojiti na razne nacine.

Edited November 17, 2010 by BraveMargot

[BraveMargot]

BMJ 2005; 331 : 1498 doi: 10.1136/bmj.331.7531.1498 (Published 22 December 2005)The case of the disappearing teaspoons: longitudinal cohort study of the displacement of teaspoons in an Australian research institute 1. Megan S C Lim, research assistant, 2. Margaret E Hellard, director, 3. Campbell K Aitken (aitken@burnet.edu.au), senior research officerCentre for Epidemiology and Population Health Research, Macfarlane Burnet Institute for Medical Research and Public Health, GPO box 2284, Melbourne, Victoria, 3001, AustraliaObjectives To determine the overall rate of loss of workplace teaspoons and whether attrition and displacement are correlated with the relative value of the teaspoons or type of tearoom.Design Longitudinal cohort study.Setting Research institute employing about 140 people.Subjects 70 discreetly numbered teaspoons placed in tearooms around the institute and observed weekly over five months.Main outcome measures Incidence of teaspoon loss per 100 teaspoon years and teaspoon half life.Results 56 (80%) of the 70 teaspoons disappeared during the study. The half life of the teaspoons was 81 days. The half life of teaspoons in communal tearooms (42 days) was significantly shorter than for those in rooms associated with particular research groups (77 days). The rate of loss was not influenced by the teaspoons' value. The incidence of teaspoon loss over the period of observation was 360.62 per 100 teaspoon years. At this rate, an estimated 250 teaspoons would need to be purchased annually to maintain a practical institute-wide population of 70 teaspoons.Conclusions The loss of workplace teaspoons was rapid, showing that their availability, and hence office culture in general, is constantly threatened.

[Indy]

Svega ima u praznicnom raspolozenju, pa evo cak i u vestima iz sveta nauke.-----UK science journal publishes study by 8-year-oldsLONDON – It came with wobbly writing and hand-drawn diagrams, but an elementary school science project has made it into a peer-reviewed journal from Britain's prestigious Royal Society.Biology Letters published a report Wednesday conducted and written by a group of 8- to 10-year-olds from an English elementary school investigating the way bumblebees see colors and patterns. The scientific organization — which is more than three centuries old and includes some of the world's most eminent scientists — said the children reported findings that were a "genuine advance" in the field of insect color and pattern vision.Working with a neuroscientist from University College London, the children carefully documented their methodology and discussed the data they collected.The group trained bees to go to targets of different colors by giving them a sugar reward, and reported that the insects are able to learn and remember cues based on color and pattern.The study successfully went through peer review — although its presentation was slightly unconventional."Scientists do experiments on monkeys, because they are similar to man, but bees could actually be close to man too," the introduction read. The report was peppered with other amusing phrasing and diagrams drawn in colored pencil.Scientists who commented on the kids' report in the journal say although the experiments were modest and lacked statistical analyses, they were cleverly and correctly designed and hold their own compared to those conducted by highly trained specialists."The experimenters have asked a scientific question and answered it well," neuroscientists Laurence Maloney and Natalie Hempel wrote in commentary alongside the children's report.Beau Lotto, the scientist who coordinated the study, said she hoped the project could inspire people to approach science in a way that's creative and fun."We like bees. Science is cool and fun because you get to do stuff that no one has ever done before," the children concluded.

[BraveMargot]

jos jedan publicity stunt Beau Lottoa. taj covek nervira me godinama, sve vise i vise...

[Indy]

Valjda je i ovo neki neobican naucni rad, premda je na freakonometrics blogu.

Think academic journals look the same ? Well, some do...We have seen yesterday that finding an optimal strategy to publish is not that simple. And actually, it can be even more difficult in the case the journal rejects the paper (not because it is not correct, but because "it does not fit" with the standards, the quality of the journal, the audience, the editor's mood, or whatever). The author has basically two choices,

• forget about the article and move to something else (e.g. start a blog where he/she will be the author and the editor)
• pretend that the article is worth publishing and then try to find another journal with similar interests

But this last choice is not that easy, since sometimes the author think that this journal was indeed the one that should publish it (e.g. all the articles on the subject have been published in that journal).So I was wondering if there were clusters of journals, i.e. journals that publish almost the same kind of articles (so that next time one of my paper is rejected by the editor, I just go to for some journal in the same cluster).So what I did is extremely simple: I looked at articles titles and looked for correlations between words frequency (I could have done that in key words, but I am not a big fan of those key words). I looked at 35 journals (that are somehow related to my areas of interest) and looked at titles of all articles published over the last 20 year

The projection of the journals on the first two axis looks like that....But the goal was to find cluster, i.e. classes of journals that publish papers with similar titles. If some classes a rather natural (Journal of Applied Proba. and Advances in Applied Proba.or Economic Theory, Journal of Economic Theory and Journal of Mathematical Economics) some strong correlation are not simple to understand, (e.g. Insurance: Mathematics and Economics and Management Science or Annals of Statistics and the Journal of Multivariate Analysis).Again, it might be possible to spend hours on the graphs, but if I want - someday - to submit something to one of those journals, I guess I have to stop here, and move to something else...

[betty]

nisam znala ovo :)Dihydrogen monoxide:

• is called "hydroxyl acid", the substance is the major component of acid rain.
• contributes to the "greenhouse effect".
• may cause severe burns.
• is fatal if inhaled.
• contributes to the erosion of our natural landscape.
• accelerates corrosion and rusting of many metals.
• may cause electrical failures and decreased effectiveness of automobile brakes.
• has been found in excised tumors of terminal cancer patients.

Despite the danger, dihydrogen monoxide is often used:

• as an industrial solvent and coolant.
• in nuclear power plants.
• in the production of Styrofoam.
• as a fire retardant.
• in many forms of cruel animal research.
• in the distribution of pesticides. Even after washing, produce remains contaminated by this chemical.
• as an additive in certain "junk-foods" and other food products.

The water molecule has the chemical formula H2O, meaning each molecule of water is composed of two hydrogen atoms and one oxygen atom. Literally, the term "dihydrogen monoxide" means "two hydrogen, one oxygen", consistent with its molecular formula: the prefix di- in dihydrogen means "two", the prefix mono- in monoxide means "one", and an oxide is a compound that contains one or more oxygen atoms.[25]

neki klinjo od 14 godina je za skolski science project uspeo da ubedi 85% ispitanika da supstancu treba zabraniti.

[aedona]

Nisam sigurna da spada u ovu temu, ali nisam mogla da odolim:Secate se eksperimenta sa malim Albertom? Ono dete sto su klasicno uslovljavali da se plasi svega krznenog i belog...Votsonov eksperiment, ucili smo ga na psihologiji u srednjoj...e pa jedan tim naucnika je citavih 7 godina istrazivao sta se sa njim desilo posle. Evo clanka o tome.A psihologija je puna bizarnih eksperimenata. U to sigurno spada i Skinerov pokusaj da obuci golubove da upravljaju projektilima posebno napravljenim za njih, finansiran od strane Americke vojske :)http://bfskinner.org/BFSkinner/AboutSkinner.htmlhttp://en.wikipedia.org/wiki/Project_PigeonPozdrav!

[Dr Arslanagić]

Bruce Adams - Tiny Revolution Russia Twentieth Century Soviet and Russian History in Anecdotes and Jokes

[Zverilla]

breakthrough news:stimulating the vagina is not the same as stimulating the clitoris :o :o :o

[fonTelefon]

breakthrough news:stimulating the vagina is not the same as stimulating the clitoris :o :o :o

Bas neobicno klit i kita nastaju od istog tkiva i zaprepascens sam cinjenicom da su povezani sa istim centrom u mozgu. Fantasticno i neocekivano kao i da ako imas debelu i dugacku spravu vece su sanse da zadovoljis gospodje.

[betty]

Komisaruk also checked what happened when women's nipples were stimulated, and was surprised to find that in addition to the chest area of the cortex lighting up, the genital area was also activated. "When I tell my male neuroscientist colleagues about this, they say: 'Wow, that's an exception to the classical homunculus,'" he says. "But when I tell the women they say: 'Well, yeah?'"

:D

[Dionysos]

 

 

Abstract

Due to observed interactions between Svalbard reindeer (Rangifer tarandus platyrhynchus) and polar bears (Ursus maritimus) during field work on Edgeøya, Svalbard, we measured response distances for reindeer from a stalking polar bear and improvised five approaches from a person disguised as a polar bear for comparison with human encounters. The alert, flight initiation and escape distances were 1.6, 2.5 and 2.3 times longer, respectively, when Svalbard reindeer were encountered by a person disguised as a polar bear compared to a person in dark hiking gear. Population increase of polar bears on Svalbard and decrease in sea-ice cover in the Arctic region during summer probably results in more frequent interactions with reindeer on the archipelago. Similar reindeer response behavior from encounters with a polar bear and persons disguised as polar bears indicate a predator-prey relationship between the two species on Edgeøya.

[Linus]

Neam pojma, oni su pričali o tome da je to što se često da pročitati u stvari mean life expectancy i da su cifre iskrivljene zbog velikog mortaliteta beba. Sad da li je to ili nije, ja nisam kompetentan da kažem.Edit>Naleteh sad na ovo. U Starom Rimu je na rodjenju life expectancy bio 25 godina. Ko preživi do desete, mogao je da se nada da će prebaciti pedesetu. Ko preživi do tridesete, mogao je da se nada da će stići do tu negde 62-3e.

Cak i kad bi to bilo i tacno, vazilo bi za "normalno" doba, tj. ono u kom nije bilo velikih pandemija (hajd' sad da zanemarimo revolucije i ratove kojih je u Rimu bar bilo onoliko). Ali je problem u tome sto su pandemije tamo trajale po desetak godina kad jednom otpocnu, a u njima su stope mortaliteta za sve starosne grupe bile daleko, daleko vece. A ti intervali su zauzimali i po 20% vremena... Tako da cak i radovi koji odrade geografsko usrednjavanje i selekcione efekte kako treba, obicno nisu u stanju da imaju dovoljno dobru vremensku rezoluciju.