Scott Seongwook Lee

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The paper presents approaches for fault tolerance and load balancing in QoS provisioning using multiple alternate paths. The proposed multiple QoS path computation algorithm searches for maximally disjoint (i.e., minimally overlapped) multiple paths such that the impact of link/node failures becomes signiicantly reduced, and the use of multiple paths(More)
— Today's emerging traffic is far removed from the traffic trends seen during the early days of Ethernet technology. As a result, the current IEEE 802.1 standards and its extensions to the Spanning Tree protocol fall short of providing satisfactory quality of service for traffic which has a significant amount of QoS-sensitive multimedia and VOIP traffic. In(More)
— In this paper, we propose the use of QoS routing to enhance the support of IP Telephony. Our proposed scheme is based on QoS intradomain OSPF routing, an extension of the conventional OSPF routing protocol. A DiffServ model is used (no per flow signaling, nor per flow accounting at intermediate nodes). Processing O/H is shifted from core to edge routers,(More)
We study how career incentives affect who selects into public health jobs and, through selection , their performance while in service. We collaborate with the Government of Zambia to experimentally vary the salience of career vs. social benefits of a newly created health worker position when recruiting agents nationally. We follow the entire first cohort(More)
In order to provide practical QoS services, we propose a new traffic engineering approach for low-cost and fast QoS provisioning. The new scheme utilizes network resources more evenly by exercising an enhanced QoS path computation algorithm that finds maximally disjoint multiple QoS paths. An efficient mechanism for managing computed paths and allocating(More)
Efforts to provide connection oriented service over the inherently best-effort Internet started almost right after its birth. Today, there exist a multitude of solutions that have been proposed but have never been implemented due to their impracticability. We propose a practical solution for fast, low cost, scalable, and yet accurate QoS routing. We propose(More)
In this paper, we present an 'emulation environment' for the design and planning of QoS-enabled IP networks. Specifically, QoS support for real-time traffic in future IP networks require 'fault tolerance' for mission-critical applications such as tele-medicine. Based on this premise, our goal is to design the QoS network system for the traffic management so(More)
This study aimed to compare the behavioural reactivity of Jindo dogs with two different coat colours. Fawn (16 males, 15 females; mean age+/-S.D.=7.2+/-2.1 years) and white (10 males, 10 females; mean age+/-S.D.=6.9+/-2.1 years) Jindo dogs were exposed to a set of behavioural tests. All of the dogs were videotaped during the testing period to allow further(More)
To investigate how socialization can affect the types and characteristics of vocalization produced by cats, feral cats (n=25) and house cats (n=13) were used as subjects, allowing a comparison between cats socialized to people and non-socialized cats. To record vocalization and assess the cats' responses to behavioural stimuli, five test situations were(More)