منابع مشابه
Vision: Two Plus Four Equals Six
Using two UV-sensitive visual pigments and the UV-filtering properties of four mycosporine-like amino acids, mantis shrimp create six spectrally distinct UV receptors. This is yet another example of the unique ways in which mantis shrimp have adapted to extract information from their visual world.
متن کاملAnalysis of the copulatory courtship songs of Lutzomyia longipalpis in six populations from Brazil.
The sand fly Lutzomyia longipalpis Lutz & Neiva (Diptera: Psychodidae: Phlebotominae), the main vector of Leishmania infantum in the Americas, is believed to be a species complex, although the status of different Brazilian populations is still somewhat unclear. Preliminary analysis of the acoustic signals that are produced during copulation by L. longipalpis males has suggested the existence of...
متن کاملEvolving Four-Part Harmony Using Genetic Algorithms
This paper presents a genetic algorithm that evolves a fourpart musical composition–melodically, harmonically, and rhythmically. Unlike similar attempts in the literature, our composition evolves from a single musical chord without human intervention or initial musical material. The mutation rules and fitness evaluation are based on common rules from music theory. The genetic operators and indi...
متن کاملThree-and Four-Part Proximal Humerus Fractures
The recent increase in life expectancy is expected to bring about a concurrent rise in the number of proximal humerus fractures. Those presenting with significant displacement, osteoporosis, and comminution present distinct clinical challenges, and the optimal treatment of these injuries remains controversial. As implant technologies and treatment strategies continue to evolve, the role and app...
متن کاملAutomatic Generation of Four-part Harmony
This paper introduces decision-theoretic planning techniques into automatic music generation. Markov decision processes (MDPs) are a mathematical model of planning under uncertainty, and factored MDPs demonstrate great advantages in an environment where the state space is large. Given a melody, we use a factored MDP planner to fill in the other three voices, based on the characteristics of clas...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Musical Times and Singing Class Circular
سال: 1879
ISSN: 0958-8434
DOI: 10.2307/3357445