In on-orbit servicing missions, a spacecraft equipped with manipulator arm grasps client satellite. Afterwards, the momentum-dumping phase follows and can be utilized for tasks. Once momentum has been dumped, desired configuration base attitude may needed initializing such as berthing. The proposed approach prioritizes maintenance of servicer spacecraft, reconfigures grasped satellite in nullsp...

for a simple digraph $g$ of order $n$ with vertex set${v_1,v_2,ldots, v_n}$, let $d_i^+$ and $d_i^-$ denote theout-degree and in-degree of a vertex $v_i$ in $g$, respectively. let$d^+(g)=diag(d_1^+,d_2^+,ldots,d_n^+)$ and$d^-(g)=diag(d_1^-,d_2^-,ldots,d_n^-)$. in this paper we introduce$widetilde{sl}(g)=widetilde{d}(g)-s(g)$ to be a new kind of skewlaplacian matrix of $g$, where $widetilde{d}(g...

After the terrorist attack on September 11, 2001 in U.S., the container security issue got high attention, especially by U.S. government, which deployed a lot of measures to promote or improve security systems. U.S. government not only enhances its national security system, but allies with other countries against the potential terrorist attacks in the future. For example CSI (Container Security...

Belief-Desire-intention (BDI) agent based systems have been implemented in many business application systems and found to have some limitations in obverting environmental changes, adaptation and learning in making rational decisions. Our paper presents a new hybrid BDI agent architecture which compares all the available intentions in the intention reconsideration process and is able to observe ...