Syphilis remains widespread worldwide, with increasing rates among men who have sex with men. This paper reviews available evidence regarding syphilis transmission, including data on: sexual transmission (transmission probability per sexual partnership), vertical transmission, transmission via blood products and organ donation, and other rare modes of transmission. In addition, host susceptibil...

Multi-packet reception (MPR) technology makes it possible for wireless nodes to successfully receive multiple packets from simultaneous transmitters in wireless networks. As it can provide more transmission opportunities, the network throughput performance can be dramatically improved. In this paper, we propose a transmission chance adaptation strategy, which decides an appropriate level of cha...

Abstract. General theoretical approach, based on projection operator techniques and scattering theory, applied to the electron transport through flexible molecular bridge is reviewed and explained within a simple model describing a biphenyl molecule connected between two metal leads. Transmission probability through the bridge and its current-voltage characteristics are calculated in one electr...

Effects of the electron-electron interaction on tunneling in a semiconductor nanowhisker are studied in a magnetic quantum limit. We consider the system with which bulk and edge states coexist. In bulk states, the temperature dependence of the transmission probability is qualitatively similar to that of a one-dimensional electron system. We investigate contributions of edge states on transmissi...

In this paper, we propose an analytic model to analyze a wireless sensor network (WSN) operating the IEEE 802.15.4 slotted CSMA/CA protocol with ACK mode. Based on the renewal approximation, we first develop an analytic model for a homogeneous WSN where all nodes in the network have the same traffic characteristic. Using our analytical model, we obtain performance metrics such as network throug...

Relay communication has advantages over direct transmission in terms of secrecy capacity. In this paper, the performance of secrecy, offered by multihop decode-and-forward relaying, is investigated and compared to its counterpart in direct transmission. Three key performance measures are derived over Rayleigh fading channels: probability of non-zero secrecy capacity, secure outage probability a...

We consider a bipartite quantum conductor and discuss the joint probability distribution of particle number in a subsystem and the self-information associated with the reduced density matrix of the subsystem. By extending the multi-contour Keldysh Green function technique, we calculate the Rényi entropy of a positive integer order M subjected to the particle number constraint, from which we der...

Flows traversing a buffer-limited network can suffer rapid throughput deterioration with increasing path length. This paper introduces a distributed transmission scheduling scheme that supports strong bandwidth guarantees for flows routed over a large number of hops, without compromising network utilization. The scheme is defined within a reservation-based transmission control framework. Throug...

This paper presents a new MAC protocol to achieve energy efficiency and low transmission latency for the static wireless sensor networks. The proposed new protocol is called A-MAC, an Alternative MAC, which assigns modified alternative wakeup schedules to different sensor nodes to minimize the probability of transmission collision. In A-MAC, after all sensor nodes are deployed, the base station...

The rapid proliferation of independently-designed and -deployed wireless sensor networks extremely crowds the wireless spectrum and promotes the emergence of cognitive radio sensor networks (CRSN). In CRSN, the sensor node (SN) can make full use of the unutilized licensed spectrum, and the spectrum efficiency is greatly improved. However, inevitable spectrum sensing errors will adversely interf...