닫혀진 보제 끈 이론의 새로운 양자화

한승기, Wu Ke, Zhang Yuan-Zhong 忠北大學校部設基礎科學硏究所 1987 自然科學硏究 Vol.1 No.1

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A Controllable Parallel CBC Block Cipher Mode of Operation

( Ke Yuan ),( Keke Duanmu ),( Jian Ge ),( Bingcai Zhou ),( Chunfu Jia ) 한국정보처리학회 2024 Journal of information processing systems Vol.20 No.1

To address the requirement for high-speed encryption of large amounts of data, this study improves the widely adopted cipher block chaining (CBC) mode and proposes a controllable parallel cipher block chaining (CPCBC) block cipher mode of operation. The mode consists of two phases: extension and parallel encryption. In the extension phase, the degree of parallelism n is determined as needed. In the parallel encryption phase, n cipher blocks generated in the expansion phase are used as the initialization vectors to open n parallel encryption chains for parallel encryption. The security analysis demonstrates that CPCBC mode can enhance the resistance to byte-flipping attacks and padding oracle attacks if parallelism n is kept secret. Security has been improved when compared to the traditional CBC mode. Performance analysis reveals that this scheme has an almost linear acceleration ratio in the case of encrypting a large amount of data. Compared with the conventional CBC mode, the encryption speed is significantly faster.

Effects of chitosan oligosaccharide and hyriopsis cumingii polysaccharide on the quality of wheat flour and extruded flour products

Yuan Ke,Beibei Ding,Yang Fu,Miaomiao Zhang,Shensheng Xiao,Wenping Ding,Heng Yang,Qingyun Lv,Zhuo Zheng,Xuedong Wang 한국식품과학회 2021 Food Science and Biotechnology Vol.30 No.7

Effects of chitosan oligosaccharide (COS) andhyriopsis cumingii polysaccharide (HCP) on the quality ofwheat flour and corresponding extruded flour productswere investigated in this work. The results showed thatboth COS and HCP are conducive to the improvement ofdough quality. Moreover, compared to control groupsamples, the moisture content, expansion ratio and oilabsorption rate of the samples were increased and thehardness were decreased with the addition of COS. Thesephenomena indicate the quality of extruded flour productsbecame better in the presence of COS as well. However,HCP has little or no effect on the quality of extruded flourproducts may be due to its degradation under high temperatureand pressure extrusion. COS with higher stabilityexhibited better improvement effects on the quality ofextruded flour products and showed a promising prospectfor application in extruded food industry.

The Loading–Unloading Model of Contact Between Fractal Rough Surfaces

Yuan Yuan,Kuo Xu,Ke Zhao 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.21 No.6

A loading–unloading elastic–plastic model of contact between three dimensional fractal rough surfaces has been presented in this paper. During loading process, the mechanical properties of a single asperity follow Hertzian theory. During unloading process, the load-area relationships of a single asperity are obtained by EK model. The truncation size distribution functions for diff erent levels of asperities are deduced. And total true contact area and total contact load are obtained during a loading–unloading process. The results show as the rough surface is in elastic deformation, the load-area relationships during loading and unloading process are identical. As the rough surface is in inelastic deformation, the total true contact area during unloading process is greater than that during loading process. An experiment is designed to verify the validity of the present model.

Enhancing the static behavior of laminated composite plates using a porous layer

Yuan Yuan,Ke Zhao,Kuo Xu 국제구조공학회 2019 Structural Engineering and Mechanics, An Int'l Jou Vol.72 No.6

The main aim of this paper is enhancing design of traditional laminated composite plates subjected to static loads. In this regard, this paper suggests embedding a lightweight porous layer in the middle of laminated composite as the core layer of the resulted sandwich plate. The static responses of the suggested structures with uniform, symmetric and non-symmetric porosity distributions are compared to optimize their design. Using the first order shear deformation theories, the static governing equations of the suggested laminated composite plates with a porous layer (LCPPL) rested on two-parameter foundation are obtained. A finite element method is also utilized to solve the governing equations of LCPPLs. Effects of laminated composite and porosity characteristics as well as geometry dimension, edges’ boundary conditions and foundation coefficients on the static deflection and stress distribution of the suggested composite plates have been investigated. The results reveal that the use of core between the layers of laminated composites leads to a sharp reduction in the static deflections of LCPPLs. Furthermore, in compare with perfect cores, the use of porous core between the layers of laminated composite plates can offer a considerable reduction in structural weight without a significant difference in their static responses.

Nonlocal-integro-vibro analysis of vertically aligned monolayered nonuniform FGM nanorods

Yuan Yuan,Ke Zhao,Yafei Zhao,Keivan Kiani 국제구조공학회 2020 Steel and Composite Structures, An International J Vol.37 No.5

Vibration of vertically aligned-monolayered-nonuniform nanorods consist of functionally graded materials with elastic supports has not been investigated yet. To fill this gap, the problem is examined using the elasticity theories of Eringen and Gurtin-Murdoch. The geometrical and mechanical properties of the surface layer and the bulk are allowed to vary arbitrarily across the length. The nonlocal-surface energy-based governing equations are established using differential-type and integro-type formulations, and solved by employing the Galerkin method by exploiting admissible modes approach and element-free Galerkin (EFG). Through various comparison studies, the effectiveness of the EFG in capturing both nonlocal-differential/integro-based frequencies is proved. A constructive parametric study is also conducted, and the roles of nanorods’ diameter, length, stiffness of both inter-rod’s elastic layer and elastic supports, power-law index of both constituent materials and geometry, nonlocal and surface effects on the dominant frequencies are revealed.

Novel Actuator with Flat Movable Part for Optical Pickup Head

Chau-Yuan Ke,Ruey-Shing Huang 한국자기학회 2007 한국자기학회 학술연구발표회 논문개요집 Vol.- No.-

Early Efficacy of Taxotere and Cisplatin Chemo-Radiotherapy for Advanced Cervical Cancer

Ke, Qing-Hua,Zhou, Shi-Qiong,Du, Wei,Lei, Yong,Huang, Min,Luo, Fei,Yang, Ji-Yuan Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.2

The aim of this study was to investigate the early outcome of the taxotere and cisplatin chemoradiotherapy for advanced cervical cancer. Fifty-six cases (FIGO II b to IVa) were divided randomly into two groups: radiotherapy alone (28 cases) and radiation plus chemotherapy (TP) group. There was no difference in radiotherapy between the two groups. The RT+C cases who received TP regimen during the radiation, and DDP once weekly injection of vain, according to 20$mg/m^2$ and taxotere once weekly iv according to 35 $mg/m^2$. These regimens were given for 4~5weeks, and some medicines to control vomiting were available for the RT+C cases. The two groups received an oral medicine MA 160mg every day during the treatment. Regarding early outcome, the complete remission rate was 64.3% and partial remission rate was 35.7% in RT+C. The complete remission rate was 32.1% and partial remission rate was 39.3% in RT. The total response rate and complete remission in the RT+C group were higher than that in the RT group. We conclude that taxotere and cisplatin chemoradiotherapy can improve the early outcome of the advanced cervical cancer, the adverse effects being endurable.

Effects of Oxidative Stress on Growth Performance, Nutrient Digestibilities and Activities of Antioxidative Enzymes of Weanling Pigs

Yuan, Shi-bin,Chen, Dai-wen,Zhang, Ke-ying,Yu, Bing Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.10

This study was undertaken to investigate the effects of oxidative stress on growth performance, nutrient digestibilities and activities of antioxidant enzymes of weanling pigs. In the experiment, 24 male $Landrance{\times}Yorkshire $weanling pigs were allotted to three groups of 8 animals each. Pigs were fed individually. According to a single factorial arrangement, pigs received diets with 5% of either fresh (group 1 and group 3) or oxidized fish oil (peroxide value was 786.50 meq $O_2/kg$ before inclusion in the diet, group 2). At the beginning of the experiment, pigs in group 3 received an intraperitoneal injection of diquat at 12 mg/kg of body weight. The trial lasted for 26 d. A metabolism test was carried out during the last 4 days of the second week. The results showed that feeding diets containing oxidized fish oil or injection with diquat depressed the growth performance and nutrient digestibilities of weanling pigs, decreased activities of antioxidant enzymes and increased concentration of malondialdehyde in plasma and liver. Intraperitoneal injection of diquat would induce more serious oxidative stress than oral intake of oxidized fish oil in the diet. In conclusion, administration of oxidized fish oil or diquat could induce oxidative stress in weanling pigs, and oxidative stress could depress growth performance and impact anti-oxidative ability of young pigs.

Early Efficacy of Endostar Combined with Chemoradiotherapy for Advanced Cervical Cancers

Ke, Qing-Hua,Zhou, Shi-Qiong,Huang, Min,Lei, Yong,Du, Wei,Yang, Ji-Yuan Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.3

The aim of this study was to investigate the early outcome of Endostar combined with chemoradiotherapy for advanced cervical cancer. Fifty-two cases (FIGO IIb to IVa) were divided randomly into two groups, receiving chemoradiotherapy alone (CRT group) and Endostar combined with chemoradiotherapy (CRT+E group). For the patients in the CRT+E group, Endostar was administered daily with the dosage of 7.5 $mg/m^2$, and cisplatin was administered weekly with the dosage of 20 $mg/m^2$ during the radiation. The regimens lasted for 4 weeks with no difference in chemoradiotherapy between the two groups. The early outcome complete remission rate was 73.1%, partial remission rate was 23.1% and the total response rate was 96.2% in CRT+E group, a significant improvement on the 34.6%, 42.3% and 76.9%, respectively, in the CRT group. One year survive rates were 100% and 84.6% in the CRT+E group and CRT groups, the difference being significant. Endostar combined with chemoradiotherapy can improve the early outcome of the advanced cervical cancer, and adverse effects were not encountered.