An intelligent walking strategy is vital for multi-legged robots possessing no a priori information of an environ‐ ment when traversing across discontinuous terrain. Sixlegged robots outperform other multi-legged robots in static and dynamic stability. However, hexapods require careful planning to traverse across discontinuous terrain. A hexapod walking strategy can be accomplished using a visi...

the mechanical aspect of entropy-exergy relationship, together with the thermal aspect usually consid-ered, leads to an extended formulation of physical exergy based on both maximum useful work and maximum useful heat that are the outcome of available energy of a thermodynamic system. this approach suggests that a mechanical entropy can be studied, in addition to the already used thermal entrop...

Sampling, sample recovery, laboratory preparation and analysis and performing calculations all introduce errors into a final test result. Even without any mistakes, random errors will remain. The precision of a method -the size of likely random errors from all sources from sampling tech­ niques through data reduction -is determined by analyzing the differences between simultaneous measurements....

The researches of this thesis are divided in:− the proposition of conservative distributed simulation algorithms of models DEVS / G-DEVS, − the definition and the realization of a G-DEVS modeling and simulation (M&S;) environment HLA compliant implementing the proposed algorithms, − the application of the environment in the M&S; of Workflow. First, we introduced a G-DEVS distributed root ...

This study focused on the effects of different enriched environments for mice in a number of behavioral and physiological parameters in 2 routine laboratory testing procedures: potency testing for tetanus vaccine and stress-induced hyperthermia. The variability in the results was studied by calculating and analyzing mean absolute devi-ations. Mice from enriched conditions weighed more and consu...

Objective To review external fixation in the management of war injuries. Method We prospectively followed up 15 external fixators (14 patients) applied in the management of war injuries. All these patients were treated at 202 Field Hospital during the 2003 Gulf Conflict. Results Of the 15 fixators, 13 (86.7%) required early revision or removal due to complications of the injury or the fixator. ...

In this document, we present research topic developed in the context of heteroge-neous data integration in plant functional genomic. Plant functional genomic is a biologicalframework where several disciplines and techniques take part in the discover of genes function.It generates a large quantity of data which the scientists manage in various ways. However,many data sources, com...

Chemistry has a key role to play in maintaining and improving our quality of life, such as in medicine, materials and electronics. However, it has also caused damage to human health and the natural environment. To make chemistry compatible with human health and the environ‐ ment, Anastas and Warner have proposed 12 principles of green chemistry, which help to explain what it means in practice [...

Editorial Board which DONALD J. HUGHES H. BURR STEINBACH scienti KONRAD B. KRAUSKOPF WILLIAM L. STRAUS, JR. EDWIN M. LERNER EDWARD L. TATUM commi ment ( Editorial Staff in teat JUNE G. BANDY, SARAH S. DEES, NANCY S. In ea HAMILTON, WILLIAM HASKELL, OLIVER W. HEATtory e WOLE, YUKIE KOZAi, ELLEN E. MURPHY, BETHteache SABE PEDERSEN, MADELINE SCHNEIDER, NANCY L. schooL TEIMOURIAN, MARIA A. WOLSAK.

Let R be an integral domain. Note some obvious facts. Every ele­ ment a of R divides 0. Indeed 0 = 0 · a. On the other hand, 0 only divides 0. Indeed if a = q · 0, then a = 0 (obvious!). Finally every unit u divides any other element a. Indeed if v ∈ R is the inverse of u, so that uv = 1 then a = a · 1 = (av)u. Lemma 19.3. Let R be an integral domain and let p ∈ R. Then p is prime if and only i...