in this paper, shielding effectiveness (se) of a perforated enclosure with imperfectly conducting walls is evaluated. to this end, first, an accurate numerical technique based on method of moments (mom) ispresented. in this method, lossy metallic walls of the enclosure are replaced by equivalent electric surfacecurrent sources. then, the impedance boundary condition on the imperfectly conductin...

The refraction phenomenon at the interface of an ordinary material and a lossy metamaterial has been investigated. For oblique incidence on the lossy metamaterial, the planes of constant amplitude of the refracted wave are parallel to the interface and the plane of constant phases make a real angle with the interface (real refraction angle). The real refraction angle and hence, the real refract...

In this report, we propose lossless/lossy coding gain as a new objective criterion to theoretically evaluate lossless and lossy coding performance of the lossless/lossy wavelet (LLW). The proposed lossless/lossy coding gain consists of three parameters: “lossless coding gain”, “quantization-lossy coding gain” and “rounding errors”. Performances of 15 kinds of the LLW are measured with two-dimen...

Lossy VASS (vector addition systems with states) are deened as a subclass of VASS in analogy to lossy FIFO-channel systems. They can be used to model concurrent systems with unreliable communication. We analyze the decidability of model checking problems for lossy systems and several branching-time and linear-time temporal logics. We present an almost complete picture of the decidability of mod...

Lossy channel systems are systems of finite state automata that communicate via unreliable unbounded fifo channels. Today the main open question in the theory of lossy channel systems is whether bisimulation is decidable. We show that bisimulation, simulation, and in fact all relations between bisimulation and trace inclusion are undecidable for lossy channel systems (and for lossy vector addit...

A lossy compression tolerant data hiding method is proposed in this paper. The image which hides data is named a stego-image. Most of data hiding methods will lose some hidden data when the stego-image is compressed by lossy compression process. However, there are few people will transmit image without lossy compression in the public internet. By the proposed method, the stego-image can be comp...

We introduce a general construction of fully simulatable oblivious transfer based on lossy encryption. Furthermore, we extend the common definition of lossy encryption by introducing the notion of computationally lossy encryption. If the cryptosystem used is computationally lossy, our general construction yields oblivious transfer protocols with computational security for both parties. Otherwis...

Simulation of the electrical and optical response a multilayer thin film composed lossless material coupled with adjacent lossy in an alternating arrangement when applying transverse voltage across is conducted using polynomial approach. The modelling lossy–lossless generalization our previous work on made up lossy–lossy materials. It propagation matrix electromagnetic wave that governs its pro...

We consider the veriication of a class of innnite-state systems called lossy channel systems, which consist of nite-state processes communicating via unbounded but lossy FIFO channels. This class is able to model several interesting protocols, such as HDLC, the Alternating Bit Protocol, and other Sliding Window protocols. In earlier papers we have considered the decidability of various temporal...