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A New Encryption Mechanism Supporting the Update of Encrypted Data for Secure and Efficient Collaboration in the Cloud Environment

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 813-834页

作者： Chanhyeong Cho Byeori kim Haehyun Cho Taek-young youn Department of Cyber Security Dankook UniversityYongin16890Republic of Korea Department of Software Soongsil UniversitySeoul07027Republic of Korea

With the rise of remote collaboration,the demand for advanced storage and collaboration tools has rapidly ***,traditional collaboration tools primarily rely on access control,leaving data stored on cloud servers vulnerable due to insufficient *** paper introduces a novel mechanism that encrypts data in‘bundle’units,designed to meet the dual requirements of efficiency and security for frequently updated collaborative *** bundle includes updated information,allowing only the updated portions to be reencrypted when changes *** encryption method proposed in this paper addresses the inefficiencies of traditional encryption modes,such as Cipher Block Chaining(CBC)and Counter(CTR),which require decrypting and re-encrypting the entire dataset whenever updates *** proposed method leverages update-specific information embedded within data bundles and metadata that maps the relationship between these bundles and the plaintext *** utilizing this information,the method accurately identifies the modified portions and applies algorithms to selectively re-encrypt only those *** approach significantly enhances the efficiency of data updates while maintaining high performance,particularly in large-scale data *** validate this approach,we conducted experiments measuring execution time as both the size of the modified data and the total dataset size *** show that the proposed method significantly outperforms CBC and CTR modes in execution speed,with greater performance gains as data size ***,our security evaluation confirms that this method provides robust protection against both passive and active attacks.

关键词： Cloud collaboration mode of operation data update efficiency

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辣椒素受体介导热休克诱导人表皮角质形成细胞金属蛋白酶1的表达

辣椒素受体介导热休克诱导人表皮角质形成细胞金属蛋白酶1的表达

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2006中国中西医结合皮肤性病学术会议

作者：李文海 young Mee LEE jee youn kim Seokwon KANG Jin Ho CHUNG 北京大学人民医院皮肤科 Department of Dermatology Laboratory of Cutaneous Aging ResearchClinical Research InstituteSeoul National University HospitalSeoulKorea

背景:金属蛋白酶1(MMP-1)是炎症反应中降解胶原的主要内肽酶。近来发现辣椒素受体(TR- PV1,一种非特异性离子通道)存在于人类角质形成细胞上,表皮的辣椒素受体激活后可以释放炎症前介质,然而在生理活动和病理状态下皮肤辣椒素受体的调...

背景:金属蛋白酶1(MMP-1)是炎症反应中降解胶原的主要内肽酶。近来发现辣椒素受体(TR- PV1,一种非特异性离子通道)存在于人类角质形成细胞上,表皮的辣椒素受体激活后可以释放炎症前介质,然而在生理活动和病理状态下皮肤辣椒素受体的调节功能所知甚少。

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Effect of natural extract eye drops in dry eye disease rats

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International Journal of Ophthalmology(English edition) 2020年第7期13卷 1023-1030页

作者： Soo youn Choi youngsub Eom jee Yong kim Dong Hoon Jang Jong Suk Song Hyo Myung kim Department of Ophthalmology Korea University College of MedicineSeoul 02841Republic of Korea BGN World Tower Eye Clinic Seoul 05551Republic of Korea Department of Ophthalmology Korea University Ansan HospitalKorea University College of MedicineGyeonggi-do 15355Republic of Korea Medical O Co. Ltd.Seoul 06025Republic of Korea

AIM:To investigate the therapeutic effect of natural extract eye drops containing bee venom,musk,and deer antlers in dry eye disease(DED)animal ***:Scopolamine-injected DED rats and lacrimal gland-excised rats were allocated into control,saline,and natural extract groups respectively and a normal group(lacrimal gland excision was not performed)in lacrimal gland-excised *** eye drop instillation 4 times a day for 5 d,corneal fluorescein staining(CFS)scores,tear MUC5AC levels,and tear lactic dehydrogenase(LDH)levels were ***:In scopolamine-injected rats,the natural extract-treated group had significantly lower CFS scores(1.7±0.5,4.7±1.4,3.8±1.9,P=0.006)and tear LDH levels(0.10±0.01,0.19±0.01,0.16±0.08 OD,P=0.014)but higher tear MUC5AC levels(12.9±3.7,7.9±2.0,9.7±3.6 ng/m L,P=0.041)compared with the control and saline-treated *** were no significant differences between the control and saline-treated *** lacrimal gland-excised rats,the natural extract-treated group also had lower CFS scores(4.3±1.2,11.5±2.3,9.0±1.9,P<0.001,P=0.001)and tear LDH levels(0.30±0.08,0.48±0.12,0.39±0.05 OD,P<0.05)but higher tear volume(4.3±0.9,1.9±0.7,2.8±1.1 mm,P=0.005,P=0.124)and tear MUC5 AC levels(8.2±2.0,2.9±1.2,5.4±2.2 ng/m L,P<0.001,P=0.047)compared with the control and saline-treated *** were no significant differences in the CFS scores,tear MUC5AC level,and tear LDH level between the normal and natural extracttreated ***:The natural extract consisting of bee venom,musk,and deer antlers may have effectiveness in DED treatment by restoring the damaged ocular surface,increasing tear volume,and recovering the tear mucin layer in DED rats.

关键词： bee venom musk deer antler natural extract dry eye disease rat

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Flow Characteristics in Compact Thermal Spray Coating Systems with Minimum Length Nozzle

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Plasma Science and Technology 2009年第5期11卷 550-554页

作者： Seung-Hyun kim youn-Jea kim School of Mechanical Engineering Sungkyunkwan University

In this study, numerical analysis is performed to adopt the equivalence ratio on the high velocity oxygen fuel （HVOF） thermal spray coating systems equipped with a minimum length nozzle. The analysis is applied to investigate the axisymmetric, steady-state, turbulent, and chemically combusting flow both within the torch and in a free jet region between the torch and the substrate to be coated. The combustion is modeled using a single-step and eddy-dissipation model which assumes that the reaction rate is limited by the turbulent mixing rate of the fuel and oxidant. As the diameter of the nozzle throat is increased, the location of the Mach shock disc moves backward from the nozzle exit. As the throat diameter and the divergent portion are 6 mm and 8 mm, respectively, the pressure in the HVOF system is the lowest at the chamber and the expanding gas is steadily maintained with both high velocity and high temperature for different equivalence ratios. Thus, relatively minor amendments of the equivalence ratio and the geometry of HVOF can lead to improved control over coating characteristics.

关键词： minimum length nozzle HVOF equivalence ratio

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Analytical analysis of pullout resistance of the hydraulic expansion rockbolts on a frictionally coupled model

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Journal of Mountain Science 2016年第12期13卷 2249-2259页

作者： Sejin kim Heejung youn Kyoungchul kim Department of Civil Engineering Hongik University R&D Center Kolon Global Corporation

This paper proposes an empirical formula to estimate the shear strength of hydraulic expansion *** field experimental results were obtained from eleven pullout tests to evaluate the results computed by the proposed *** was found that shear resistance of hydraulic expansion rockbolts significantly depends on the uniaxial compressive strength and elastic modulus of rock,with high correlation coefficients of 0.7651 and0.8587,*** developed formula enables estimation of the maximum pullout load in an analytical process without pullout tests in the ***,due to the poor interlocking at the initial pullout load,the measured displacements were higher than the estimated *** reduce the interlocking effects between bolt and rock,we recommend preloading of 29.4 *** allows reducing the distance between the measured and estimated displacement and making two load-displacement curves practically identical with marginal differences of 1.1 to 1.5 mm at the maximum pullout load.

关键词： Expansion rockbolt Pullout resistance Pullout load Shear strength

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Usefulness of the acromioclavicular joint cross-sectional area as a diagnostic image parameter of acromioclavicular osteoarthritis

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World Journal of Clinical Cases 2022年第7期10卷 2087-2094页

作者： young Joo jee youn Moon Jung youn Han Yun-Sic Bang Keum Nae Kang young Su Lim young-SoonChoi young-Uk kim Department of Anesthesiology and Pain Medicine CHA Ilsan Medical CenterSchool of MedicineCHA UniversityIlsanGyeonggi-do 10414South Korea Department of Anesthesiology and Pain Medicine Seoul National University Hospital College of MedicineSeoul 03080South Korea Department of Anesthesiology and Pain Medicine CHA Bundang Medical CenterSchool of MedicineSeongnamGyeonggi-do 13496South Korea Department of Anesthesiology and Pain Medicine National Police HospitalSeoul 05715South Korea Department of Anesthesiology and Pain Medicine Catholic Kwandong UniversityCollege of MedicineInternational St.Mary’s HospitalIncheon 22711South Korea

BACKGROUND Acromioclavicular joint(ACJ)space narrowing has been considered to be an important diagnostic image parameter of ACJ osteoarthritis(ACJO).However,the morphology of the ACJ space is irregular because of osteophyte formation,subchondral irregularity,capsular distention,sclerosis,and ***,we created the ACJ cross-sectional area(ACJCSA)as a new diagnostic image parameter to assess the irregular morphologic changes of the *** To hypothesize that the ACJCSA is a new diagnostic image parameter for *** ACJ samples were obtained from 35 patients with ACJO and 30 healthy individuals who underwent shoulder magnetic resonance(S-MR)imaging that revealed no evidence of *** coronal,T2-weighted,fat-suppressed SMR images were acquired at the ACJ level from the two *** measured the ACJCSA and the ACJ space width(ACJSW)at the ACJ on the S-MR images using our imaging analysis *** ACJCSA was measured as the cross-sectional area of the *** ACJSW was measured as the narrowest point between the acromion and the *** The average ACJCSA was 39.88±10.60 mm;in the normal group and 18.80±5.13 mm;in the ACJO *** mean ACJSW was 3.51±0.58 mm in the normal group and 2.02±0.48 mm in the ACJO *** individuals had significantly lower ACJCSA and ACJSW than the healthy *** operating characteristic curve analyses demonstrated that the most suitable ACJCSA cutoff score was 26.14 mm^(2),with 91.4%sensitivity and 90.0%*** The optimal ACJSW cutoff score was 2.37 mm,with 88.6%sensitivity and 96.7%*** though both the ACJCSA and ACJSW were significantly associated with ACJO,the ACJCSA was a more sensitive diagnostic image parameter.

关键词： Acromioclavicular joint Osteoarthritis Cross-sectional area Diagnosis

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Male metaplastic breast cancer with poor prognosis:A case report

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World Journal of Clinical Cases 2022年第15期10卷 4964-4970页

作者： Hyun Yul kim Seungju Lee Dong-il kim Chang Shin Jung jee Yeon kim Kyung Jin Nam Ki Seok Choo youn Joo Jung Department of Surgery Pusan National University Yangsan HospitalPusan National University School of MedicineGyeongnam 50612South Korea Department of Pathology Pusan National University Yangsan HospitalPusan National University School of MedicineGyeongnam 50612South Korea Department of Radiology Pusan National University Yangsan HospitalPusan National University School of MedicineGyeongnam 50612South Korea

BACKGROUND Metaplastic breast cancer(MBC)is a rare subtype of breast *** constitute less than 1%of breast cancer cases and are much rarer in *** are few reports of MBC because of its ***,an aggressive type of cancer,is refractory to common treatment modalities of breast cancer and has a poor *** SUMMARY We report a case of MBC in a 78-year-old *** visited our clinic with a palpable mass on the left breast with no masses in the axillary *** had previously undergone robot-assisted laparoscopic radical prostatectomy for prostate cancer,but there was no family history of *** breast mass was visible on ultrasonography,mammography,and magnetic resonance imaging,and chest computed tomography revealed a lung mass in the posterior basal segment of the right lower *** patient was diagnosed with metaplastic carcinoma on core needle biopsy with lung *** mastectomy with sentinel lymph node biopsy and video-assisted segmentectomy of the right lung was ***,multiple metastases appeared 3 mo after surgery in the brain,chest,and abdomen,and the patient died 5 mo after the initial *** MBC is an aggressive and extremely rare breast cancer *** case reports are needed to determine the optimal treatment.

关键词： Breast neoplasm Male Triple-negative breast cancer Metaplastic breast cancer Adjuvant treatment Case report

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PopFlow:a novel flow management scheme for SDN switch of multiple flow tables based on flow popularity

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Frontiers of Computer Science 2020年第6期14卷 111-122页

作者： Cheng WANG Kyung Tae kim Hee Yong youn College of Electrical and Computer Engineering Sungkyunkwan UniversitySuwon 16419Korea College of Software Sungkyunkwan UniversitySuwon 16419Korea

Pipeline processing is applied to mutiple flow tables(MFT)in the switch of software-defined network(SDN)to increase the throughput of the ***,the processing time of each flow increases as the size or number of flow tables gets *** this paper we propose a novel approach called PopFlow where a table keeping popular flow entries is located up front in the pipeline,and an express path is provided for the flow matching the table.A Markov model is employed for the selection of popular entries considering the match latency and match frequency,and Queuing theory is used to model the flow processing time of the existing MFT-based schemes and the proposed *** simulation reveals that the proposed scheme substantially reduces the flow processing time compared to the existing schemes,and the diference gets more significant as the flow arrival rate increases.

关键词： edge computing SDN pipeline processing PopFlow match frequency and latency markov model-based prediction

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Mechanical characteristics of fused cast basalt tube encased in steel pipe for protecting steel surface

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中国有色金属学会会刊：英文版 2009年第4期19卷 935-940页

作者： jee-Seok WANG Jong-Do kim Hee-Jong YOON Division of Mechanical and Information Engineering Korea Maritime University Division of Marine System Engineering Korea Maritime University Department of Research and Development Dongdo Basalt Industry Co.Ltd

Because of the various excellent characteristics of cast basalt materials,such as,anti-corrosion,anti-wearing,good hardness,high chemical stability,of which steel may not possess,the steel-basalt composite pipes are used in severe environments for compensating the defects of *** limit of bending moment with which steel-basalt composite pipe may safely endure was calculated and the limit curvature of the composite pipe in the safe range was *** application temperature of steel-basalt pipe was examined due to a different coefficient among basalt,mortar and mild steel.

关键词：玄武岩钢管表面保护机械特性包裹熔铸化学稳定性复合管

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Functional Insights of Plant GSK3-like Kinases： Multi-Taskers in Diverse Cellular Signal Transduction Pathways

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Molecular Plant 2015年第4期8卷 552-565页

作者： Ji-Hyun youn Tae-Wuk kim Department of Life Science College of Natural Sciences Hanyang University Seou1133-791 Korea Naturat Science Institute Hanyang University Seou1133-791 Korea

The physiological importance of GSK3-like kinases in plants emerged when the functional role of plant GSK3-like kinases represented by BIN2 was first elucidated in the brassinosteroid （BR）-regulated signal transduction pathway. While early studies focused more on understanding how GSK3-like kinases regulate BR signaling, recent studies have implicated many novel substrates of GSK3-like kinases that are involved in a variety of cellular processes as well as BR signaling. Plant GSK3-like kinases play diverse roles in physiological and developmental processes such as cell growth, root and stomatal cell development, flower development, xylem differentiation, light response, and stress responses. Here, we review the progress made in recent years in understanding the versatile functions of plant GSK3-like kinases. Based on the relationship between GSK3-like kinases and their newly identified substrates, we discuss the physiological and biochemical relevance of various cellular signaling mediated by GSK3-like kinases in plants.

关键词： GSK3-like kinases brassinosteroids signal transduction pathway Arabidopsis rice

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