6 posts tagged with hypothesis.
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Pathetic vestigial organ or integral part of fearsome predator?

In this paper, we examine a first-year torque and angular acceleration problem to address a possible use of the forelimbs of Tyrannosaurus rex. A 1/40th-scale model is brought to the classroom to introduce the students to the quandary: given that the forelimbs of T. rex were too short to reach its mouth, what function did the forelimbs serve? This issue crosses several scientific disciplines including paleontology, ecology, and physics, making it a great starting point for thinking “outside the box..." Lipkin and Carpenter have suggested that the forelimbs were used to hold a struggling victim (which had not been dispatched with the first bite) while the final, lethal bite was applied. If that is the case, then the forelimbs must be capable of large angular accelerations α in order to grab the animal attempting to escape. The concepts of the typical first-year physics course are sufficient to test this hypothesis... Naturally, student love solving any problem related to Tyrannosaurus rex.
posted by ChuraChura on Nov 25, 2014 - 20 comments

Research methods: the heart and soul of knowledge

Hollaback and Why Everyone Needs Better Research Methods (And Why All Data Needs Theory), by Zeynep Tufekci:
I’ve taught "introduction to research methods" to undergraduate students for many years, and they would sometimes ask me why they should care about all this "method stuff", besides having a required class for a sociology major out of the way. I would always tell them, without understanding research methods, you cannot understand how to judge what you see.

The Hollaback video shows us exactly why.
[more inside]
posted by joseph conrad is fully awesome on Nov 5, 2014 - 23 comments

If Inuit have 100 words for snow, linguists must have many for this idea

Linguistic relativity is the idea that the language people use affects or even limits the way that they can think. This idea was developed in the early 20th century, and continues to be a matter of disagreement among linguists and cognitive scientists. The Cambridge and Oxford university presses are even publishing dueling upcoming books on the subject, The Bilingual Mind, which examines linguistic relativity in the context of people who speak more than one language, and The Language Hoax flatly denies that it exists.
posted by grouse on Mar 5, 2014 - 50 comments

Intelligence Tests

Is Psychometric g a Myth? - "As an online discussion about IQ or general intelligence grows longer, the probability of someone linking to statistician Cosma Shalizi's essay g, a Statistical Myth approaches 1. Usually the link is accompanied by an assertion to the effect that Shalizi offers a definitive refutation of the concept of general mental ability, or psychometric g." [more inside]
posted by kliuless on Apr 11, 2013 - 113 comments

The Puzzle of Plastid Evolution

The Puzzle of Plastid Evolution: A comprehensive understanding of the origin and spread of plastids remains an important yet elusive goal in the field of eukaryotic evolution. Combined with the discovery of new photosynthetic and non-photosynthetic protist lineages, the results of recent taxonomically broad phylogenomic studies suggest that a re-shuffling of higher-level eukaryote systematics is in order. Consequently, new models of plastid evolution involving ancient secondary and tertiary endosymbioses are needed to explain the full spectrum of photosynthetic eukaryotes. [Full Text HTML] [Full Text PDF] [more inside]
posted by Blasdelb on Oct 20, 2012 - 8 comments

Taking peer review to the Internet

Something that allows you to easily slice through misinformation online online could make misleading the public a lot tougher. The concept isn't new (previously & many others) but unlike those efforts, Hypothes.is is open, standards-based, and backed by some web heavy-weights.
posted by ATXile on Nov 9, 2011 - 59 comments

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