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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Internet Computing and Services
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Korean Society for Internet Information
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Volume & Issues
Volume 10, Issue 6 - Dec 2009
Volume 10, Issue 5 - Oct 2009
Volume 10, Issue 4 - Aug 2009
Volume 10, Issue 3 - Jun 2009
Volume 10, Issue 2 - Apr 2009
Volume 10, Issue 1 - Feb 2009
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A Kinematic Approach to Answering Similarity Queries on Complex Human Motion Data
Han, Hyuck ; Kim, Shin-Gyu ; Jung, Hyung-Soo ; Yeom, Heon-Y. ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 1~11
Recently there has arisen concern in both the database community and the graphics society about data retrieval from large motion databases because the high dimensionality of motion data implies high costs. In this circumstance, finding an effective distance measure and an efficient query processing method for such data is a challenging problem. This paper presents an elaborate motion query processing system, SMoFinder (Similar Motion Finder), which incorporates a novel kinematic distance measure and an efficient indexing strategy via adaptive frame segmentation. To this end, we regard human motions as multi-linkage kinematics and propose the weighted Minkowski distance metric. For efficient indexing, we devise a new adaptive segmentation method that chooses representative frames among similar frames and stores chosen frames instead of all frames. For efficient search, we propose a new search method that processes k-nearest neighbors queries over only representative frames. Our experimental results show that the size of motion databases is reduced greatly (
) but the search capability of SMoFinder is equal to or superior to that of other systems.
A Scheme for Matching Satellite Images Using SIFT
Kang, Suk-Chen ; Whoang, In-Teck ; Choi, Kwang-Nam ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 13~23
In this paper we propose an approach for localizing objects in satellite images. Our method exploits matching features based on description vectors. We applied Scale Invariant Feature Transform (SIFT) to object localization. First, we find keypoints of the satellite images and the objects and generate description vectors of the keypoints. Next, we calculate the similarity between description vectors, and obtain matched keypoints. Finally, we weight the adjacent pixels to the keypoints and determine the location of the matched object. The experiments of object localization by using SIFT show good results on various scale and affine transformed images. In this paper the proposed methods use Google Earth satellite images.
A Low Cost 3D Skin Wrinkle Reconstruction System Based on Stereo Semi-Dense Matching
Zhang, Qian ; WhangBo, Taeg-Keun ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 25~33
In the paper, we proposed a new system to retrieve 3D wrinkle data based on stereo images. Usually, 3D reconstruction based on stereo images or video is very popular and it is the research focus, which has been applied for culture heritage, building and other scene. The target is object measurement, the scene depth calculation and 3D data obtained. There are several challenges in our research. First, it is hard to take the full information wrinkle images by cameras because of light influence, skin with non-rigid object and camera performance. We design a particular computer vision system to take winkle images with a long length camera lens. Second, it is difficult to get the dense stereo data because of the hard skin texture image segmentation and corner detection. We focus on semi-dense stereo matching algorithm for the wrinkle depth. Compared with the 3D scanner, our system is much cheaper and compared with the physical modeling based method, our system is more flexible with high performance.
A PCA-based Data Stream Reduction Scheme for Sensor Networks
Fedoseev, Alexander ; Choi, Young-Hwan ; Hwang, Een-Jun ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 35~44
The emerging notion of data stream has brought many new challenges to the research communities as a consequence of its conceptual difference with conventional concepts of just data. One typical example is data stream processing in sensor networks. The range of data processing considerations in a sensor network is very wide, from physical resource restrictions such as bandwidth, energy, and memory to the peculiarities of query processing including continuous and specific types of queries. In this paper, as one of the physical constraints in data stream processing, we consider the problem of limited memory and propose a new scheme for data stream reduction based on the Principal Component Analysis (PCA) technique. PCA can transform a number of (possibly) correlated variables into a (smaller) number of uncorrelated variables. We adapt PCA for the data stream of a sensor network assuming the cooperation of a query engine (or application) with a network base station. Our method exploits the spatio-temporal correlation among multiple measurements from different sensors. Finally, we present a new framework for data processing and describe a number of experiments under this framework. We compare our scheme with the wavelet transform and observe the effect of time stamps on the compression ratio. We report on some of the results.
Object Categorization Using PLSA Based on Weighting
Song, Hyun-Chul ; Whoang, In-Teck ; Choi, Kwang-Nam ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 45~54
In this paper we propose a new approach that recognizes the similar categories by weighting distinctive features. The approach is based on the PLSA that is one of the effective methods for the object categorization. PLSA is introduced from the information retrieval of text domain. PLSA, unsupervised method, shows impressive performance of category recognition. However, it shows relatively low performance for the similar categories which have the analog distribution of the features. In this paper, we consider the effective object categorization for the similar categories by weighting the mainly distinctive features. We present that the proposed algorithm, weighted PLSA, recognizes similar categories. Our method shows better results than the standard PLSA.
Realtime Facial Expression Recognition from Video Sequences Using Optical Flow and Expression HMM
Chun, Jun-Chul ; Shin, Gi-Han ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 55~70
Vision-based Human computer interaction is an emerging field of science and industry to provide natural way to communicate with human and computer. In that sense, inferring the emotional state of the person based on the facial expression recognition is an important issue. In this paper, we present a novel approach to recognize facial expression from a sequence of input images using emotional specific HMM (Hidden Markov Model) and facial motion tracking based on optical flow. Conventionally, in the HMM which consists of basic emotional states, it is considered natural that transitions between emotions are imposed to pass through neutral state. However, in this work we propose an enhanced transition framework model which consists of transitions between each emotional state without passing through neutral state in addition to a traditional transition model. For the localization of facial features from video sequence we exploit template matching and optical flow. The facial feature displacements traced by the optical flow are used for input parameters to HMM for facial expression recognition. From the experiment, we can prove that the proposed framework can effectively recognize the facial expression in real time.
Design and Implementation of Automatic Script Generator for Mobile Database Applications
Eum, Doo-Hun ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 71~85
The demand for mobile database applications has been rapidly increased with the growth of mobile users and the development of wireless Internet technology. But the productivity of mobile applications is low and it takes much time to manage the versions of applications because the user interface and query processing code of applications is manually written. In this paper, we describe the design and implementation of the MobileGen that is a script generator for mobile database applications. The generated scripts enhance mobile application productivity by providing the code for operating with a database and processing user queries. Each script provides a corresponding deck that is a set of related cards as user interface. The MobileGen supports easy version management of generated applications and the MobileGen itself because it is based on the templates that are frameworks for scripts. Moreover, the MobileGen provides not only the interested entity but also the entities that are related directly and indirectly with the interested entity unlike the most commercial mobile script generators.
Ontology Based Semantic Information System for Grid Computing
Han, Byong-John ; Kim, Hyung-Lae ; Jeong, Chang-Sung ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 87~103
Grid computing is an expanded technology of distributed computing technology to use low-cost and high-performance computing power in various fields. Although the purpose of Grid computing focuses on large-scale resource sharing, innovative applications, and in some case, high-performance orientation, it has been used as conventional distributed computing environment like clustered computer until now because Grid middleware does not have common sharable information system. In order to use Grid computing environment efficiently which consists of various Grid middlewares, it is necessary to have application-independent information system which can share information description and services, and expand them easily. Thus, in this paper, we propose a semantic information system framework based on web services and ontology for Grid computing environment, called WebSIS. It makes application and middleware developer easy to build sharable and extensible information system which is easy to share information description and can provide ontology based platform-independent information services. We present efficient ontology based information system architecture through WebSIS. Discovering appropriate resource for task execution on Grid needs more high-level information processing because Grid computing environment is more complex than other traditional distributed computing environments and has various considerations which are needed for Grid task execution. Thus, we design and implement resource information system and services by using WebSIS which enables high-level information processing by ontology reasoning and semantic-matching, for automation of task execution on Grid.
Rule-based Feature Model Validation Tool
Choi, Seung-Hoon ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 105~113
The feature models are widely used to model the commonalities and variabilities among the products in the domain engineering phase of software product line developments. The findings and corrections of the errors or consistencies in the feature models are essential to the successful software product line engineering. The aids of the automated tools are needed to perform the validation of the feature models effectively. This paper describes the approach based on JESS rule-base system to validate the feature models and proposes the feature model validation tool using this approach. The tool of this paper validates the feature models in real-time when modeling the feature models. Then it provides the information on existence of errors and the explanations on causes of those errors, which allows the feature modeler to create the error-free feature models. This attempt to validate the feature model using the rule-based system is supposed to be the first time in this research field.
Improved Function Point Measurement Model for Software Size Estimation
Jung, In-Yong ; Woo, Doug-Je ; Park, Jin-Hyeong ; Jeong, Chang-Sung ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 115~126
A software size estimation has to be analyzed in the beginning of the software life-cycle and helpful to the prediction of its size and cost. The software cost has been calculated by estimating software size from the user's point of view since the function point method based on international standards was introduced for the estimation of software size in 2004. However, the current function point method is not easy to be exploited for unfamiliar user, and has a problem that it cannot estimate the proper size for software such as engineering software, scientific calculations and simulation with complicated internal computational logic. This paper presents an improved model which can simplify the existing function point measurement procedure, and perform the estimation of software size in easy and fast way at the initial stage of project. Moreover, it presents a mathematical weighted value calculation model which can solve the problem of the fixed complexity weighted value and reflect the characteristics of organization as its data is pilled up. Our evaluation shows that the presented model has advantage that it can measure the size more rapidly than the existing FPA methods and has more correlation with LOC.
Lightweight Framework For Supporting Mobile Web Development
Shin, Seung-Woo ; Kim, Haeng-Kon ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 127~138
Mobile web applications are being used and changed rapidly due to the growth of mobile device performance. But, cost of development environment and standards make the high development cost and low productivity. It is main reason that the design and implementation of the applications are more time consuming than general computing environments. In this paper, we propose MWeb(MobileWeb)-Framework based on the agile methodology and Ruby on Rails that is a kind of framework for supporting mobile web application development using mobile web standards. This work consists of the mobile web development architecture and agile process model. MWeb-Framework will support the same user experience to the different devices. We validates the framework by implementing the case studies through suggested mobile web development framework. As a result, we can develop the mobile web applications with productivity and quality. In the future, we will suggest how to make the MWeb-Framework standardization and practically apply the frameworks the various case studies to improve framework potentially problems.
Integration and Verification of Privacy Policies Using DSML's Structural Semantics in a SOA-Based Workflow Environment
Lee, Yong-Hwan ; Jan, Werner ; Janos, Sztipanovits ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 139~149
In order to verify that a lot of legal requirements and regulations are correctly translated into software, this paper provides a solution for formal and computable representations of rules and requirements in data protection legislations with a DSML (Domain Specific Modeling Language). All policies are formally specified through Prolog and then integrated with DSML, According to the time of policy verification, this solution has two kinds of policies: static policies, dynamic policies.
A Study on Low-Power Sensor Network of Improved Power-Efficiency in Wireless Network
Choi, In-Hwa ; Jabbar, Hamid ; Hwang, Jun ; Park, Gyung-Leen ; Jeong, Tai-Kyeong ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 151~160
Wireless network solution is used in many area because of free mobility and easy of establishment. Sensors that compose wireless network need protocol that support wireless communication to share information each other. As representative protocol, we currently witnessed IPv6 protocol. However, due to the limitation of sensors's electric power and computing ability, it is inefficient that each sensors use this protocol. In this paper, we designed improved sensor circuit that can heighten energy efficiency in sensor network to solve these problem and composed algorithm that can pare down energy consumption using method to make unnecessary sensor in sleep-mode.
Design and Implementation of Personal Preference Module on Web Service
Gu, Tae-Wan ; Hong, Seong-Jun ; Lee, Kwang-Mo ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 161~176
As the Internet has been growing, WWW(World Wide Web) based services were popularized and users using the service were increased excessively. To support these environments, a processing of many transactions became an essential consideration. There are many researches regarding the user profiling on web services to support those transactions effectively. Most of them are just for grasping the comsumer's preferences. However, a trend of recent web service is not limited what they are doing between consumers and providers; a consumer can become a provider and also a provider can become a consumer virtual open environments such as open market on the internet. For this reason, it is necessary to inspect a preference of consumers as well as providers one. In this paper, we proposed personal preference tree(PPT) reflecting the preferences for providers and implemented the module applying to the web service, and evaluated the applicability the personal preference module through a simulation.
An Integrated RFID Service Management Policy Infromation Model
Ahn, Hyung-Jin ; Bang, Hyo-Chan ; Kim, Kwang-Hoon ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 177~187
Typical RFID-device applications have provided users to each vendor-specific interface for supporting control and management of RF-tags and readers within their managed domain. Also, typical RFID-business applications have been implemented by using each event-data structure of RF-readers or RFID middlewares. RFID infrastructure managers, thus, are difficult to handle individual control and management specifications for managed RF-tags, devices and systems. Most RFID application services, also, are attached to providing visibility and traceability of an RF-tag item. To solve these problems, this paper proposes an RFID service management policy information model which supports to define unified control and management for heterogeneous RFID devices, middlewares and applications. This paper describes an example procedure that an RFID service management policy definition based on the proposed model is adaptively transformed and executed on a specific RFID sub-infrastructure.
Property-based Hierarchical Clustering of Peers using Mobile Agent for Unstructured P2P Systems
Salvo, MichaelAngelG. ; Mateo, RomeoMarkA. ; Lee, Jae-Wan ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 189~198
Unstructured peer-to-peer systems are most commonly used in today's internet. But file placement is random in these systems and no correlation exists between peers and their contents. There is no guarantee that flooding queries will find the desired data. In this paper, we propose to cluster nodes in unstructured P2P systems using the agglomerative hierarchical clustering algorithm to improve the search method. We compared the delay time of clustering the nodes between our proposed algorithm and the k-means clustering algorithm. We also simulated the delay time of locating data in a network topology and recorded the overhead of the system using our proposed algorithm, k-means clustering, and without clustering. Simulation results show that the delay time of our proposed algorithm is shorter compared to other methods and resource overhead is also reduced.
An Adaptive Buffer Tuning Mechanism for striped transport layer connection on multi-homed mobile host
Khan, Faraz-Idris ; Huh, Eui-Nam ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 199~211
Recent advancements in wireless networks have enabled support for mobile applications to transfer data over heterogeneous wireless paths in parallel using data striping technique . Traditionally, high performance data transfer requires tuning of multiple TCP sockets, at sender's end, based on bandwidth delay product (BDP). Moreover, traditional techniques like Automatic TCP Buffer Tuning (ATBT), which balance memory and fulfill network demand, is designed for wired infrastructure assuming single flow on a single socket. Hence, in this paper we propose a buffer tuning technique at senders end designed to ensure high performance data transfer by striping data at transport layer across heterogeneous wireless paths. Our mechanism has the capability to become a resource management system for transport layer connections running on multi-homed mobile host supporting features for wireless link i.e. mobility, bandwidth fluctuations, link level losses. We show that our proposed mechanism performs better than ATBT, in efficiently utilizing memory and achieving aggregate throughput.
A Study on Performance Improvement of High- Rate WPAN using Hybrid MAC
Park, Sung-Hyun ; Rhee, Seung-Hyong ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 213~222
IEEE 802.15.3 HR-WPAN is designed to enable wireless connectivity of high-speed, low-power, low-cost multimedia-capable portable consumer electronic devices. For quality of service, the standard specifies the use of TDMA (Time Division Multiple Access). However, during low contention TDMA gives much lower channel utilization and higher delays than CSMA (Carrier Sensing Multiple Access) because in TDMA, a node can transmit only during its scheduled time slots whereas in CSMA, nodes can transmit at any time as long as there is no contention. By mixing CSMA and TDMA, Hybrid MAC becomes more robust to timing failures, time-varying channel conditions, slot assignment failures and topology changes than a stand-alone TDMA.
Improved Dynamic ID-based Remote User Authentication Scheme Using Smartcards
Shim, Hee-Won ; Park, Joonn-Hyung ; Noh, Bong-Nam ;
Journal of Internet Computing and Services, volume 10, issue 4, 2009, Pages 223~230
Among the remote user authentication schemes, password-based authentication methods are the most widely used. In 2004, Das et al. proposed a "Dynamic ID Based Remote User Authentication Scheme" that is the password based scheme with smart-cards, and is the light-weight technique using only one-way hash algorithm and XOR calculation. This scheme adopts a dynamic ID that protects against ID-theft attack, and can resist replay attack with timestamp features. Later, many flaws of this scheme were founded that it allows any passwords to be authenticated, and can be vulnerable to impersonation attack, and guessing attack. By this reason many modifications were announced. These scheme including all modifications are similarly maintained security against replay the authentication message attack by the timestamp. But, if advisory can replay the login immediately, this attempt can be succeeded. In this paper, we analyze the security vulnerabilities of Das scheme, and propose improved scheme which can resist on real-time replay attack using the counter of authentication. Besides our scheme still secure against impersonation attack, guessing attack, and also provides mutual authentication feature.