Flexibility is a concept associated with variable needs of human beings.Today transformable structures are used to meet human changeable demands with different purposes and functions such as facades, roofs, sunshades, etc.A Flexible structure must be able to change physically and adapt to predetermined conditions.To provide flexibility and adaptability,transformable systems are required to poss...

Let $X$ be a sufficiently nice scheme. We survey some recent progress on dualizing complexes. It turns out that a complex in $kinj X$ is dualizing if and only if tensor product with it induces an equivalence of categories from Murfet's new category $kmpr X$ to the category $kinj X$. In these terms, it becomes interesting to wonder how to glue such equivalences.

making a conservative bridge using a natural tooth pontic with mobile teeth is complicated, time-consuming and sometimes impossible with the current techniques and materials. the aim of this paper is` to describe a new method using special rigid tray technique (srtt) to deal with such difficult clinical cases.

ground differential movements due to faulting have been observed to cause damage to engineered structures and facilities. although surface fault rupture is not a new problem, there are only a few building codes in the world containing some type of provisions for reducing the risks. fault setbacks or avoidance of construction in the proximity to seismically active faults, are usually supposed as...

A 42-year-old woman was admitted to the hospital because of odynophagia and neck pain after swallowing a piece of bone. Anteroposterior (AP) and lateral neck X-ray showed the foreign body. Rigid esophagoscopy under general anesthesia was performed and foreign body extracted by rigid bronchoscopy.

An operator T acting on a Banach space X is said to be super-recurrent if for each open subset U of X, there exist $$\lambda \in {\mathbb {K}}$$ and $$n\in {N}}$$ such that T^n(U)\cap U\ne \emptyset $$ . In this paper, we introduce study the notions super-rigidity uniform which are related notion super-recurrence, also investigate basic properties these two notions. addition, discuss spectrum o...

The aim of this article is to give for each dimension d≥2 an infinite series rigid compact complex manifolds which are not infinitesimally and, hence, exhaustive answer a problem Morrow and Kodaira stated in the famous book Complex Manifolds.

this paper evaluates a new and simple controller design method based on qft (quantitative feedback theory) for a two-link manipulator whose first link is rigid and the second is flexible. a piezoelectric patch is attached to the surface of the flexible link for vibration suppression of it. this system is modeled as a nonlinear multi-input multi-output (mimo) control systems whose inputs are two...