Effective Route Maintenance and Restoration Schemes in Mobile Ad Hoc Networks

This study proposes a location-based hybrid routing protocol to improve data packet delivery and to reduce control message overhead in mobile ad hoc networks. In mobile environments, where nodes move continuously at a high speed, it is generally difficult to maintain and restore route paths. Therefore, this study suggests a new flooding mechanism to control route paths. The essence of the proposed scheme is its effective tracking of the destination’s location based on the beacon messages of the main route nodes. Through experiments based on an NS-2 simulator, the proposed scheme shows improvements in the data packet delivery ratio and reduces the amount of routing control message overhead compared with existing routing protocols such as AODV, LAR, ZRP and AODV-DFR

A STUDY ON THE FACTORS INFLUENCING THE INTENTION OF BLOG USAGE

Blogs are a new type of media that have recently become popular users on the World Wide Web and have influence throughout society. The purpose of this study is to examine social motivations influencing intention of blog usage. Based on Technology Acceptance Model and Motivation Theory, This study considered perceived usefulness, perceived ease of use, reputation, reciprocity, enjoyment of helping, social identity as the determinants of influencing the intention of blog usage. The purposed model was empirically evaluated using online survey data collected from 342 user of popular blog site in Korea (NAVER Blog , cyworld mihompy, daum blog, yahoo blog etc) The results revealed that perceived usefulness, perceived ease of use, reciprocity, social identity affected directly the intention of blog usage. Also social identity has moderate effect via reciprocity and enjoyment of helping on blog usage. This study contributes to a theoretical understanding of the factors as social motivation that affect the usage of blogs. Practically this study results provide blog service providers useful strategic insights and service guideline to enhance user\u27s intention of blogs

Content Clauses in English

In the case of J espersen (l964: 349-351), the term 'content clause' refers to both> sentential complements and appositional complements. For example, (1) a. He believes that the world is round. b. He knows the fact that the world is round. The italicized part of (la) which does not contain a head noun is a sentential complement, whereas the italicized part of (1b) which contains a head noun is an appositional corriplemenL Jespersen's term, 'content clause, refers to both categories. This paper, however, uses the term in a narrow sense which refers only to sentential complements which are preceded by head nouns. In traditional grammars, content clauses were understood to the effect that head nouns and their content clauses constitute a syntactic appositional relationship. Furthermore, Jespersen (op. cit.) indicated that head nouns and their content clauses may be separated by Extraposition. With regard to content clauses, generative-transformational grammars have not much surpassed studies of traditional grammars, particularly in their semantic explorations

Double Modality in Korean

The purpose of the present paper is to explain the phenomenon of 'double modality' in Korean. This paper claims that the -most reasonable explanation for such a phenomenon requires the Performative Analysis(cf.Austin, 1965; Ross, 1970). The Performative Analysis for 'double modality' in Korean seems to be structurally and semantically correct

Two Causative Forms in Korean

We all agree that sentences must be synonymous with each other if they are to be related by transformation. But the question is whether or not they are "really" synonymous. There are growing number of cases in which a set of sentences that were previously regarded as synonymous turn out to be non-synonymous when subject to deeper investigation. In many cases, arguments for non-synonymy seem to be correct hut there are some cases in which such arguments do not hold simply because the investigators incorrectly observed the phenomena and then jumped to erroneous conclusions

Semantics of Delimiters

One of the characteristics which drastically distinguish Korean (and Japanese) from 'English (and other languages) is the phenomenon of Korean (and Japanese) delimiters, the counterpart of which is almost lacking in many languages. When a speaker communicates with an addressee, the speaker may report the message to the addressee from a neutral point of view, or he may add his own evaluation and/or intention and/or focus to the neutrally transmittable message in a discourse setting such as situation and context

Improving Prediction Quality in Collaborative Filtering Based on Clustering

In this paper we present the recommender systems that use the k-means clustering method in order to solve the problems associated with neighbor selection. The first method is to solve the problem in which customers belong to different clusters due to the distance-based characteristics despite the fact that they are similar customers, by properly converting data before performing clustering. The second method explains the k-prototype algorithm performing clus-tering by expanding not only the numeric data but also the categorical data. The experimental results show that better prediction quality can be obtained when both methods are used together. 1