Young-joo Shin

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Achieving both security and efficiency is the challenging issue for a data outsourcing service in the cloud computing. Proof of Storage with Deduplication (POSD) [1] is the first solution that addresses the issue for the cloud storage. However, the validity of the POSD scheme stands on the strong assumption that all clients are honest in terms of generating(More)
Wireless mesh networks can extend the network service region by just adding APs. However wireless mesh networks also have the same security problems as the traditional wireless LAN. Until now, many methods have been proposed to solve the authentication problem, particularly for the fast handoff, in the traditional wireless LAN. However, previous methods are(More)
PURPOSE Local recurrence is a major concern in patients who have undergone surgery for ductal carcinoma in situ (DCIS). The present study assessed whether the expression levels of hormone receptors, human epidermal growth factor receptor 2 (HER2), and Ki-67, as well as resection margin status, tumor grade, age at diagnosis, and adjuvant hormonal therapy and(More)
Decentralized group key management mechanisms offer beneficial solutions to enhance the scalability and reliability of a secure multicast framework by confining the impact of a membership change in a local area. However, many of the previous decentralized solutions reveal the plain text to the intermediate relaying proxies,or require the key distribution(More)
PURPOSE The purpose of this study was to compare in vivo kinematics, range of motion, and functional outcomes in patients that received either a high-flexion cruciate retaining or a high-flexion cruciate substituting knee. METHODS Forty-eight high-flexion cruciate retaining (CR) and 47 high-flexion cruciate substituting (PS) knees were included in this(More)
Suppressor of cytokine signaling (SOCS) family is an important negative regulator of cytokine signaling and deregulation of SOCS has been involved in many types of cancer. All cervical cancer cell lines tested showed lower expression of SOCS1, SOCS3, and SOCS5 than normal tissue or cell lines. The immunohistochemistry result for SOCS proteins in human(More)
Cloud storage service providers apply data client-side deduplication across multiple users to achieve cost savings of network bandwidth and disk storage. However, deduplication can be used as a side channel by attackers who try to obtain sensitive information of other users' data. We propose a differentially private client-side deduplication protocol. A(More)
In cloud storage services, deduplication technology is commonly used to reduce the space and bandwidth requirements of services by eliminating redundant data and storing only a single copy of them. Deduplication is most effective when multiple users outsource the same data to the cloud storage, but it raises issues relating to security and ownership.(More)
Supporting user mobility is one of the most challenging issues in wireless networks. Recently, as the desires for the user mobility and high-quality multimedia services increase, fast handoff among base stations comes to a center of quality of connections. Therefore, minimizing re-authentication latency during handoff is crucial for supporting various(More)
Purpose Silica nanoparticles (SiNPs) are promising carriers for ophthalmic drug delivery. In this study, we investigated the effect of various sizes of nonporous SiNPs on cultured human keratocytes. Methods Three different sizes of SiNPs (50, 100, and 150 nm) were manufactured. Primarily cultured human keratocytes were exposed to different concentrations(More)