Showing 20 articles starting at article 541

< Previous 20 articles        Next 20 articles >

Categories: Mathematics: Modeling, Offbeat: Paleontology and Archeology

Return to the site home page

     (via sciencedaily.com) 

The movement of people across the Bering Sea from North Asia to North America is a well-known phenomenon in early human history. Nevertheless, the genetic makeup of the  people who lived in North Asia during this time has remained mysterious due to a limited number of ancient genomes analyzed from this region. Now, researchers describe genomes from ten individuals up to 7,500 years old that help to fill the gap and show geneflow from people moving in the opposite direction from North America to North Asia.

     (via sciencedaily.com) 

Combing computational physics with experimental data, researchers have developed computer models for determining a drug candidate's ability to target and bind to proteins within cells.

     (via sciencedaily.com) 

A new study posits that interstellar cloud conditions may have played a significant role on the presence of key building blocks of life in the solar system.

     (via sciencedaily.com) 

Only a fraction of the 7,000 to 8,000 languages spoken around the world benefit from modern language technologies like voice-to-text transcription, automatic captioning, instantaneous translation and voice recognition. Researchers want to expand the number of languages with automatic speech recognition tools available to them from around 200 to potentially 2,000.

     (via sciencedaily.com) 

A new study based on 297 ancient Scandinavian genomes analysed together with the genomic data of 16,638 present day Scandinavians resolve the complex relations between geography, ancestry, and gene flow in Scandinavia -- encompassing the Roman Age, the Viking Age and later periods. A surprising increase of variation during the Viking period indicates that gene flow into Scandinavia was especially intense during this period.

     (via sciencedaily.com) 

Researchers are employing sparsification, a method from graph theory and computer science, to identify which links in a network are the most important for the spread of disease.

     (via sciencedaily.com) 

A new paper presents a mathematical model for the motion of bacteria that includes cell division and death, the basic ingredients of the cell cycle.

     (via sciencedaily.com) 

Researchers have developed a novel machine-learning framework that uses scene descriptions in movie scripts to automatically recognize different characters' actions. Applying the framework to hundreds of movie scripts showed that these actions tend to reflect widespread gender stereotypes, some of which are found to be consistent across time.

     (via sciencedaily.com) 

Microraptor was an opportunistic predator, feeding on fish, birds, lizards -- and now small mammals. The discovery of a rare fossil reveals the creature was a generalist carnivore in the ancient ecosystem of dinosaurs.

     (via sciencedaily.com) 

A small tax on robots, as well as on trade generally, will help reduce income inequality in the U.S., according to economists.

     (via sciencedaily.com) 

An international research team examines a rich fossil bed in the renowned Berlin-Ichthyosaur State Park in Nevada's Humboldt-Toiyabe National Forest, where many 50-foot-long ichthyosaurs (Shonisaurus popularis) lay petrified in stone. The study offers a plausible explanation as to how at least 37 of these marine reptiles came to meet their ends in the same locality -- a question that has vexed paleontologists for more than half a century. The research presents evidence that these ichthyosaurs died at the site in large numbers because they were migrating to this area to give birth for many generations across hundreds of thousands of years.

     (via sciencedaily.com) 

Researchers suggest how scientists can circumvent the need for massive data sets to forecast extreme events with the combination of an advanced machine learning system and sequential sampling techniques.

     (via sciencedaily.com) 

A grammatical problem which has defeated Sanskrit scholars since the 5th Century BC has finally been solved by a PhD student.

     (via sciencedaily.com) 

Researchers have developed an AI based neural network to detect an early knee osteoarthritis from x-ray images. AI was able to match a doctors' diagnosis in 87% of cases. The result is important because x-rays are the primary diagnostic method for early knee osteoarthritis. An early diagnosis can save the patient from unnecessary examinations, treatments and even knee joint replacement surgery.

     (via sciencedaily.com) 

Human bipedalism -- walking upright on two legs -- may have evolved in trees, and not on the ground as previously thought, according to a new study.

     (via sciencedaily.com) 

A new study shows machine-learning models trained using simple symptoms, demographic features are effective in predicting COVID-19 infections.

     (via sciencedaily.com) 

Discoveries at a major new fossil site in Morocco suggest giant arthropods -- relatives of modern creatures including shrimps, insects and spiders -- dominated the seas 470 million years ago.

     (via sciencedaily.com) 

Without clocks or modern tools, ancient Mexicans watched the sun to maintain a farming calendar that precisely tracked seasons and even adjusted for leap years.

     (via sciencedaily.com) 

Analysis of teeth of extinct lemurs has revealed fascinating clues to the evolution of humans, a new study has found.

     (via sciencedaily.com) 

Using a novel modeling method, a team of researchers gained new insights into how hummingbirds produce wing movement, which could lead to design improvements in flying robots.