7,332 research outputs found
How does cognitive dissonance influence the sunk cost effect? [Corrgendum]
No full textChung SH, Cheng KC. Psychol Res Behav Manag. 2018; 11:37–45. On page 37, Introduction section, 4th sentence reads “Over the past half century, research of the suck cost effect has focused on exploration of probable factors that explain the cause of the sunk cost effect” it should have been “Over the past half century, research of the sunk cost effect has focused on exploration of probable factors that explain the cause of the sunk cost effect”. Read the original article 
Performance analysis of two schemes for managing information related to incall registration in wireline UPT networks
No full textIn universal personal telecommunication (UPT) environments, UPT networks retain information related to incall registration in UPT user service profiles in order to provide incoming UPT calls for UPT users at any terminal in any location. As UPT networks support incall registration, terminal users can be different from terminal owners, and several UPT users can register on a single terminal for their incoming calls. Therefore, appropriate third-party protection procedures are needed to protect the rights of terminal owners from UPT users. A database called the terminal profile is needed to store the information of the terminal states and the incall UPT users registered on the terminal in order to carry out third-party protection procedures. In order to manage information within the terminal profile and the service profile, this article proposes two schemes, a request-based scheme and a timer-based scheme. The performance of the two schemes is compared in terms of the number of signaling messages transferred between a service switching point (SSP) and a service control point (SCP) per incall registration reset for a terminal. (C) 1999 Elsevier Science B.V. All rights reserved
Optimal design of a distributed network with a two-level hierarchical structure
No full textThis paper deals with the topological design of a network with a two-level hierarchical structure where the embedded backbone network is full-meshed and the local networks attached to it are of star type. The whole problem, unlike the conventional approaches partitioning it into two subproblems, is directly handled in such a general setting that both a backbone network and local access networks are to be simultaneously determined. We formulate this problem as a quadratic 0-1 programming model, and also propose an equivalent linearized version of the model. Based on the observation that the linearized model is a variant of the well established uncapacitated facility location problem, a dual-based solution procedure is developed and shown to be efficient from computing experiments which were done on a wide variety of problems with up to 50 backbone nodes and 50 user nodes. © 1992
A Fast Handoff Scheme For IP over Bluetooth
No full text0This work was supported by the Korea Science and Engineering Foundation(
KOSEF) through the Advanced Information Technology Research
Center(AITrc
Analysis of satellite on-board time-space-time switching networks with multiple separated space switches
No full textAdvanced satellite on-board baseband switching processors have Time-Space-Time (T-S-T) structures which are similar to the terrestrial switching networks (Sw-Nw). Generally, the satellite systems require higher reliability than ground equipment because of more severe environment and lack of repair. This paper proposes fault-tolerant satellite on-board T-S-T Sw-Nw with multiple separated space switches instead of a single space switch. We analyze the mean time to unreliable operation (MTUO), as a performance & reliability index for the T-S-T systems with multiple separated space switches as well as conventional T-S-T systems. The MTUO vary depending on the threshold level of blocking-probability and the offered traffic. In general, T-S-T Sw-Nw with multiple space switches have better performance & reliability than those with the single space switch, and their performabilities are appreciably improved, especially for one additional spare space switch. This study can be extended to analyze the performance & reliability of entire satellite communication systems including the on-board baseband Sw-Nw, Rx interfaces, and Tx interfaces.This study was supported in part by Satellite Technology Research Center at KAIST and by the Korea Science & Engineering Foundatio
OPTIMAL-DESIGN OF THE 2-LEVEL DISTRIBUTED NETWORK WITH DUAL HOMING LOCAL CONNECTIONS
No full textTo keep abreast of the ever-tightening robustness standards of communication services, we consider the topological design of the two-level network where a sufficient level of structural redundancy is imposed: the embedded backbone subnet is fully meshed and each user node is connected to two different backbone nodes. This complicated design problem for the dual homing full-mesh network is formulated as a 0-1 integer problem so that the key structural characteristics of the single homing network design model are carried over. By applying the usual dual-based solution procedure, we develop ours, which consists of three dual and one primal subprocedures. The computational experiments conducted with a variety of test problems illustrate the effectiveness of the proposed solution approach
Fluid-structure-soil interaction analysis of cylindrical liquid storage tanks subjected to horizontal earthquake loading
No full textThis paper presents a method of seismic analysis for a cylindrical liquid storage structure considering the effects of the interior fluid and exterior soil medium in the frequency domain. The horizontal and rocking motions of the structure are included in this study. The fluid motion is expressed in terms of analytical velocity potential functions, which can be obtained by solving the boundary value problem including the deformed configuration of the structure as well as the sloshing behavior of the fluid. The effect of the fluid is included in the equation of motion as the impulsive added mass and the frequency-dependent convective added mass along the nodes on the wetted boundary of the structure. The structure and the near-field soil medium are represented using the axisymmetric finite elements, while the far-field soil is modeled using dynamic infinite elements. The present method can be applied to the structure embedded in ground as well as on ground, since it models both the soil medium and the structure directly. For the purpose of verification, earthquake response analyses are performed on several cases of liquid tanks on a rigid ground and on a homogeneous elastic half-space. Comparison of the present results with those by other methods shows good agreement. Finally, an application example of a reinforced concrete tank on a horizontally layered soil with a rigid bedrock is presented to demonstrate the importance of the soil-structure interaction effects in the seismic analysis for large liquid storage tanks
PZT-induced Lamb waves and pattern recognitions for on-line health monitoring of jointed steel plates
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