the main objective of this article is to optimize the walking pattern of a 2d humanoid robot with heel-off and toe-off motions in order to minimize the energy consumption and maximize the stability margin. to this end, at first, a gait planning method is introduced based on the ankle and hip joint position trajectories. then, using these trajectories and the inverse kinematics, the position tra...

Harmful cyanobacterial blooms in eutrophic water bodies pose a major threat to the environment and human health. The morphological functional traits of cyanobacteria play important roles maintaining their competitive advantages. To explore regulatory mechanisms different bloom-forming cyanobacteria, we performed one-year-long phytoplankton survey from November 2016 October 2017 Lake Chaohu, Chi...

In spring 2000, the British government auctioned off licences for Third Generation mobile telecommunications services. In the preparation of the auction, two designs involving each a hybrid of an English and a sealed-bid auction were suggested by the government: a discriminatory and a uniform price variant. We report an experiment on these two designs, and also compare the results to those with...

VOL. 24 / NO. 1 / SPRING 2014 61 Summary Better-educated parents generally have children who are themselves better educated, healthier, wealthier, and better off in almost every way than the children of the less educated. But this simple correlation does not prove that the relationship is causal. Neeraj Kaushal sifts through the evidence from economics and public policy and reviews large nation...

We study vertical jumping in a simple robot comprising an actuated mass-spring arrangement. The actuator frequency and phase are systematically varied to find optimal performance. Optimal jumps occur above and below (but not at) the robot's resonant frequency f(0). Two distinct jumping modes emerge: a simple jump, which is optimal above ff(0), is achievable with a squat maneuver, and a peculiar...

Robotized laser welding is an application, which requires high speed combined with high precision. Realistic Dynamic Simulations combined with Off-line Programming, significantly enhances the a priory prediction of the weldability of a specific product. Obviously, realistic dynamic simulations require realistic models of the robot and controller. A 3DOF robot model has been formulated which inc...

Kidney transplantation is the therapy of choice for patients with end stage renal disease. Graft survival is optimal when donor and recipient are fully match for the human leukocyte antigens (HLA), however due to the high degree of polymorphism of HLA, in most situation, this is not possible. Therefore haploidentical (partially matched) siblings, parents or off-spring are considered as potentia...