Results 71 to 80 of about 77,602 (280)

On the grasshopper problem with signed jumps

open access: yes, 2011
The 6th problem of the 50th International Mathematical Olympiad (IMO), held in Germany, 2009, was the following. Let $a_1,a_2,...,a_n$ be distinct positive integers and let $M$ be a set of $n-1$ positive integers not containing $s=a_1+a_2+...+a_n$.
Kós, Géza
core   +1 more source

Ecology and management of the Senegalese grasshopper Oedaleus senegalensis (Krauss 1877) (Orthoptera : Acrididae) in West Africa : Review and prospects [PDF]

open access: yes, 2008
Depuis les années 1970, le criquet sénégalais - Oedaleus senegalensis (Krauss 1877) - est devenu l'un des principaux criquets ravageurs des cultures vivrières du Sahel africain.
Kooyman, Christian   +2 more
core   +1 more source

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

open access: yesThe Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li   +12 more
wiley   +1 more source

Integrating species distribution models, genetics and morphology to infer species dynamics of New Zealand Phaulacridium grasshoppers : a thesis presented in partial fulfilment of the requirements for the degree of Masters of Science in Zoology at Massey University, Palmerston North, New Zealand [PDF]

open access: yes, 2016
Species comparison studies have used a number of different methods that can contribute to our understanding of processes that influence the differences and similarities observed between species.
Sivyer, Louisa Maree
core  

Biology and Ecology of Melanoplus Borealis (Orthoptera: Acrididae) in Fairbanks, Alaska with Special Reference to Feeding Habits [PDF]

open access: yes, 2017
Overwintered Melanoplus borealis (subspecies, borealis Fieber) eggs hatched within 10-15 days in mid-June. The nymphs molted 5 times and became adults in about 45 days in nature.
Kaufmann, Tohko
core   +3 more sources

Regulatory mechanisms of reproduction in locusts and grasshoppers

open access: yesNew Plant Protection, EarlyView.
Regulatory networks composed of numerous coding and noncoding genes play crucial roles in the reproduction of locusts and grasshoppers. This review integrates mechanistic advances in reproductive regulation, highlighting environmentally adaptive pathways and providing prospective targets for eco‐friendly pesticides.
Jing He, Jiliang Wang, Xinran Wang
wiley   +1 more source

An improved grasshopper optimization algorithm with application to financial stress prediction

open access: yesApplied Mathematical Modelling, 2018
This study proposed an improved grasshopper optimization algorithm (GOA) for continuous optimization and applied it successfully to the financial stress prediction problem.
Jie Luo   +5 more
semanticscholar   +1 more source

Matching habitat choice could be brightness‐based instead of hue‐based in green‐brown polymorphic grasshoppers

open access: yesOikos, EarlyView.
Some prey species have evolved background matching, that is they resemble their surrounding environment in terms of colour and/or brightness. When prey populations inhabit patchy environments, they may even have evolved specialised phenotypes: each phenotype matching a specific subset of patches.
Lilian Cabon, Holger Schielzeth
wiley   +1 more source

OPTIMUS: Self-Adaptive Differential Evolution with Ensemble of Mutation Strategies for Grasshopper Algorithmic Modeling

open access: yesAlgorithms, 2019
Most of the architectural design problems are basically real-parameter optimization problems. So, any type of evolutionary and swarm algorithms can be used in this field.
Cemre Cubukcuoglu   +3 more
doaj   +1 more source

PRODUK OLAHAN BELALANG KAYU (Valanga nigricornis Burm.): SNACK BAR DI KABUPATEN GUNUNGKIDUL MENGGUNAKAN METODE QUALITY FUNCTION DEPLOYMENT (QFD)

open access: yesJurnal Teknologi Industri Pertanian, 2023
Consumers have an important role in the sustainability of a business. Producers who can meet the needs and desires of consumers have a competitive attitude and will continue to survive.
Aldicky F Amri   +12 more
doaj   +1 more source

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