With the growing power density and heat-dissipation cost of modern VLSI designs, thermal and power integrity quickly become serious concerns. Although the impacts of thermal effects on transistor and interconnects performance are relatively well-known, the interactions between power-delivery and thermal are not clear. As a result, power-delivery design without thermal consideration may cause so...

In this paper, we propose a Hierarchical Particle Swarm Optimization (HPSO) algorithm model for multimodal function optimization. All particles will be classified into several groups, these groups operated at two levels: one level is to find location of global optima clusters with its particles; the other is to exactly distinguish multiple global optima in clusters. By this mechanism, algorithm...

For multi-objective optimal reactive power dispatch (MORPD), a new approach is proposed where simultaneous minimization of the active power transmission loss, the bus voltage deviation and the voltage stability index of a power system are achieved. Optimal settings of continuous and discrete control variables (e.g. generator voltages, tap positions of tap changing transformers and the number of...

Hierarchical modulation multiplexes layers of different robustness into one stream. Usually being exploited in broadcast systems such as digital video broadcasting, hierarchical modulation can also be applied to unicast communications in a cooperative manner. This article deals with novel multi-hop cooperative transmission and routing strategies with hierarchical modulation. In multi-hop networ...

owing to the oncoming needs and increasing the population of lake urmia watershed, providing equilibrium  between water supply and demand seems quite challenging and the lake cannot be successful in meeting its ecological demands in this critical condition. in this unfavorable situation, water resources must be managed through a sustainable context. with this knowledge in hand, a multi attribut...

Graph coloring was exploited in wireless sensor networks to solve many optimization problems. These problems are related in general to channel assignment. In this paper, we propose to jointly use coloring for routing purposes. We introduce CHRA a coloring based hierarchical routing approach. Coloring is exploited to avoid interferences and also to schedule nodes transmissions to sink. We provid...

We present a new global optimization approach for multiple people tracking based on a hierarchical tracklet framework. A new type of tracklets is introduced, which we call tree tracklets. They contain bifurcations to naturally deal with ambiguous tracking situations. Difficult decisions are postponed to a later iteration of the hierarchical framework, when more information is available. We cast...