• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.4
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• pp.980-992
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• 2011

WSN gateway which runs transmission between WSN (Wireless Sensor Network) based on IEEE 802.15.4 and PN (Public Network) based on TCP/IP belongs to core technology of application based on two network. Because WSN Gateway receives various kinds of packet from many sensor nodes in an uncertain time as well as uses hardware's performance enough, it has high level of complexity about software and it is hard to be implemented. To solve these problems, this paper suggests both efficient event detection scheme for identify packet and implementation unit of protocol called 'Transaction'. The results of applying the proposed network framework, complexity of software reduces. And we provide software development environments of reflect various performance requirements.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.4
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• pp.965-972
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• 2011

As an aged population has increased in Korea, the number of patients with chronic disease has soared up as well. The rapid increase of the chronic disease triggers a need of new paradigm of healthcare. In terms of data transmission of healthcare system, a use of data-transmission protocol based on bluetooth could be dismal in application of healthcare due to its postponement of connection. On the contrary, WPAN is evaluated to be proper to support the application of healthcare in restricted geographic areas. In addition, the bluetooth, a base of the current wireless network, doesn't support a special mechanism to cope up with emergent patients because of its delayed connection among devices. Against this backdrop, this study aims to design an integrated interface of multi bio-sensing and suggest a measuring and monitering system for the patients with chronic illnesses by using Zigbee of WPAN as a sufficient bandwidth is anticipated owing to frequent deliveries of complicated biological signals.

• The KIPS Transactions:PartC
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• v.17C no.6
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• pp.459-464
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• 2010

Due to the application-specific nature of wireless sensor networks, the sensitivity to such a requirement as data reporting latency may vary depending on the type of applications, thus requiring application-specific algorithm and protocol design paradigms which help us to maximize energy conservation and thus the network lifetime. In this paper, we implement and evaluate a novel delay-adaptive sensor scheduling scheme for energy-saving data gathering which is based on a two phase clustering (TPC), in wireless sensor networks. The TPC is implemented on sensor Mote hardwares. With the help of TPC implemented, sensors selectively use direct links for control and forwarding time critical sensed data and relay links for data forwarding based on the user delay constraints given. Implementation study shows that TPC helps the sensors to increase a significant amount of energy while collecting sensed data from sensors in a real environment.

• Archives of Plastic Surgery
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• v.36 no.3
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• pp.269-276
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• 2009

Purpose: Local skin necrosis after extravasation of adriamycin, a widely used chemotherapeutic agent, is a common problem in cancer patients. The extravasation of chemotherapeutic agents yields severe inflammatory responses, crust formation, skin necrosis, and ulceration. Even though several treatment options have been proposed for extravasation injury, there is still controversy regarding the management of such lesions. Thus the aim of this study was to compare the efficacy of saline injection(Group 1), hydrocortisone injection(Group 2), propranolol injection(Group 3) and early surgical excision as a treatment(Group 4) in a rat extravasation model. Methods: The authors planned forty mature male Sprague - Dawley rats were divided into 4 groups and each group contained 10 rats. Administration of adriamycin($1.0mg/m{\ell}$) $1.5m{\ell}$ by subcutaneous injection on the dorsal side of the rats was followed by protocol. The treatment options were applied 2 hours after adriamycin injection. At the end of the 5th days, the presence and size of ulcers at the injection site were measured. 3 weeks after injection, a histopathologic examination was performed for each treatment and control group. T - tests were used to analyze the differences between the measurements. Results: Propranolol significantly improved tissue recovery compared with control group and other groups. These data suggest that there is little role for saline and hydrocortisone in the treatment of adriamycin extravasation injury. Conclusion: In this study, we compared some treatment methods in adriamycin extravasation model. The findings support the propranolol injection may prevent extravasation injury. However this study was performed in the laboratory using rats, and the results could be different in clinical application. Thus, more needs further investigations and clinical application.

• The Journal of the Korea Contents Association
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• v.5 no.1
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• pp.101-108
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• 2005

In this paper, we propose a design methodology of RESTful SOAP-based web services which try to solve extensibility problem of SOAP-based Web service by adopting REST concept into SOAP. And, we apply the proposed RESTful SOAP-based web services design methodology in constructing slip data processing web services, compare it with simple SOAP-based slip data web services, and try to propose a model for building Web Services in the future. REST is a model about architecture type of web distributed computing , the biggest distributed application in the world. In REST, identification of resources are made by URI, states(resources) are represented by document described by XML and transferred through HTTP our proposed RESTful SOAP-based web services are expected to contribute to constructing useful world wide web services which are essential in building E-Commerce society.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.11
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• pp.2323-2329
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• 2009

Recent IPTV services still remain as simple broadcasting services that cannot make the most of interactive features together with various content-associated data. So, IPTV providers are making efforts to break from monopolistic style, so as increasing the user's participation m service. However there is an interoperability problem because no common solution is employed across different providers. To solve this problem, there needs to be a framework for a framework for generating, sharing and distributing package contents. In this paper, we propose user-centered package contents application framework for interactive IPTV services. We also design a package content authoring and consuming system which plays core parts in the proposed framework.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.4B
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• pp.333-343
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• 2006

MANET and P2P applications have a common nature that they don't have any fixed infrastructures that might maintain network topologies. With such common characteristics, a P2P application can be a killer application over MANET. Due to absence of reliable node which serves indexing services in MANET, fully distributed P2P applications are more suitable for MANET. By using DHT like Chord, we can save network bandwidth and avoid a point of failure of a directory server. However, since MANET allows nodes to depart from network freely, P2P file sharing applications using Chord lookup protocol should address how to recover the keys stored at the departed node. In this paper, we propose BU-Chord in order to detect and recover the departure of nodes by creating and storing backup file information in distributed manner. Our BU-Chord shows off better performance than existing Chord especially in case of high departure rate of nodes.

• Journal of Veterinary Clinics
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• v.20 no.2
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• pp.242-244
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• 2003

A 3-year-old, male, mongrel dog was presented with pruritus, alopecia to the Veterinary medical Teaching Hospital, College of Veterinary Medicine of Kyungpook National University. On physical examination, generalized erythema, papules, scales and crusts were observed. The canine scabies infestation was diagnosed by deep skin scraping and Malassezia spp. and Staphylococcus spp. were found on skin cytology. He was treated with selamectin at 6 mg/kg applied to the skin in a single spot every two weeks for one month in order to investigate the effect of selamectin on canine scabies and was treated with amoxicillin trihydrate/clavulanate pattassium, ketoconazole and chlorhexidine shampoo for Malassezia sup. and Staphylococcus spp. simultaneously. When he was rechecked after 7, 14, 21, and 28 days after the first application of selamectin, scabies werent seen. The dermatological signs including pruritus, papules, scales, and crusts were remarkably resolved at 14 days. The alopecia was almost disappeared and few Malassezia spp. and Staphylococcus spp. were seen after 28 days. The efficacy of selamectin by this protocol is excellent in the dog infestated canine scabies.

• Journal of the Korea Society of Computer and Information
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• v.16 no.10
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• pp.73-81
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• 2011

The WBAN(Wireless Body Area Network) technology is a short distance wireless network which provides each device's interactive communication by connecting devices inside and outside of body located within 3 meters. Standardization on the physical layer, data link layer, network layer and application layer is in progress by IEEE 802.15.6 TG BAN. The The WBAN servides consists of both medical and non-medical applications. The medical application service uses the sensor that transfer the periodic traffic and have different data rates. It uses GTS method to guarantee QoS. In this paper, a new method is proposed, which are suitable design for MAC Protocol. Firstly, MAC frame structure and a primitive based on the WBAN are proposed. Secondly, we proposed the GTS algorithm improved the channel utilization based on the WFQ(Weighted Fair Queuing). The proposed scheduling method is improved channel utilization compared with i-Game(Round Robin scheduling method).

• Journal of Internet Computing and Services
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• v.13 no.6
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• pp.55-62
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• 2012

Grid web applications by standard Web technology are increasingly used to provide grid service to users as normal Web user interface and service. It is however difficult to integrate a grid security system such as Grid Security Infrastructure (GSI) into Web applications because the delegation way of standard Web security is not the same as the one of Grid security. This can be solved by allowing Web applications to get a Grid credential by using an online credential repository system such as MyProxy. In this paper, we investigate the problem that occurs when MyProxy, which assumes mutual trust between a user and Grid web application, is adapted for achieving security integration between Web and Grid, and we propose a new Grid proxy delegation service to delegate a Grid credential to the Web without assuming mutual trust. In the service, the X.509 proxy delegation process is added to OAuth protocol for credential exchange, and authentication can be done by an external service such as OpenID. So, users can login onto the Grid web application in a single sign-on manner, and are allowed to securely delegate and retrieve multiple credentials for one or more Virtual Organizations.