the purpose of this study was to identify the anatomic structures of the abdominal region of cat throughcomputed tomography (ct) to be used by veterinary radiologists, clinicians and surgeons. the abdominalregion of four cats were scanned twice, with and without using contrast medium in a same position, usinghigh-resolution imaging protocol. slice intervals were 11 mm and were adjusted so that ...

mobile ad hoc networks (manets) are composed of mobile stations communicating through wireless links, without any fixed backbone support. in these networks, limited power energy supply, and frequent topology changes caused by node mobility, makes their routing a challenging problem. tora is one of the routing protocols that successfully copes with the nodes’ mobility side effects, but it doesn’...

This paper proposes a Carrier Sense Multiple Access with Carrier Preemption (CSMA/CP) MAC protocol for the DWDM Metropolitan Area Network (MAN) Access ring networks. In the network, each node is equipped with one tunable transmitter and multiple fixed receivers. This protocol provides variable size IP packets directly over all-Optical DWDM MAN ring networks and gives the more efficient bandwidt...

We present a new protocol for quantum key distribution using discrete phase-shift encoding with continuous variables. The novelty of the protocol is multi letter alphabets represented by coherent states of light with fixed amplitude and variable phase. Information is encoded in the phase of a coherent states which can be chosen from a regular discrete set consisting of an arbitrary number of le...

Authenticated key agreement protocols play a significant role in securing communications over public network channels (Internet). This paper proposes a new key agreement protocol based on factorization problem over nonabelian groups. Then it presents two different ways to provide mutual authentication for the proposed protocol; this paper presents a new authenticated key agreement protocol usin...

In 2015, Zheng et al. proposed an efficient protocol for two-party explicit authenticated key agreement(2EAKA). Zheng et al. claimed that their proposed 2EAKA protocol does not need any fixed public key infrastructure and is provably secure in the random oracle under the Computation Gap Diffie-Hellman assumption. However, this paper points out that Zheng et al.’s 2EAKA protocol still suffers fr...

The problem of attitude consensus control is addressed for multiple rigid spacecraft under a fixed interaction network where only subset followers can obtain the leader's state information. To estimate and angular velocity leader, group distributed finite-time observers constructed each follower. Then fast non-singular terminal sliding mode controllers are proposed based on observed Rigorous pr...

The 4th Generation (4G) wireless mobile internet networks will be combined through current existing cellular networks (i.e., CDMA2000, WCDMA and TD_SCDMA) and Wi-Fi (i.e., Wireless LAN) networks with fixed internet to support wireless mobile internet as the same quality of service as fixed internet. Each of the networks has own specified protocols, disparity frequency, and maximum data speed an...

The following concepts shall be required in the sequel: Definition 1.1 [5, 27]. A uniform space (X,Φ) is a nonempty set X equipped with a nonempty family Φ of subsets of X ×X satisfying the following properties: (i) if U is in Φ, then U contains the diagonal {(x, x) |x ∈ X}; (ii) if U is in Φ and V is a subset of X ×X which contains U, then V is in Φ; (iii) if U and V are in Φ, then U ∩ V is in...

We study nonlinear stability of spatially homogeneous oscillations in reaction-diffusion systems. Assuming absence of unstable linear modes and linear diffusive behavior for the neutral phase, we prove that spatially localized perturbations decay algebraically with the diffusive rate t−n/2 in space dimension n. We also compute the leading order term in the asymptotic expansion of the solution, ...