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      • SCOPUSKCI등재

        Applications of a Deep Neural Network to Illustration Art Style Design of City Architectural

        ( Yue Wang ),( Jia-wei Zhao ),( Ming-yue Zheng ),( Ming-yu Li ),( Xue Sun ),( Hao Liu ),( Zhen Liu ) 한국정보처리학회 2024 Journal of information processing systems Vol.20 No.1

        With the continuous advancement of computer technology, deep learning models have emerged as innovative tools in shaping various aspects of architectural design. Recognizing the distinctive perspective of children, which differs significantly from that of adults, this paper contends that conventional standards may not always be the most suitable approach in designing urban structures tailored for children. The primary objective of this study is to leverage neural style networks within the design process, specifically adopting the artistic viewpoint found in children's illustrations. By combining the aesthetic paradigm of urban architecture with inspiration drawn from children's aesthetic preferences, the aim is to unearth more creative and subversive aesthetics that challenge traditional norms. The selected context for exploration is the landmark buildings in Qingdao City, Shandong Province, China. Employing the neural style network, the study uses architectural elements of the chosen buildings as content images while preserving their inherent characteristics. The process involves artistic stylization inspired by classic children's illustrations and images from children's picture books. Acting as a conduit for deep learning technology, the research delves into the prospect of seamlessly integrating architectural design styles with the imaginative world of children's illustrations. The outcomes aim to provide fresh perspectives and effective support for the artistic design of contemporary urban buildings.

      • KCI등재

        First-principles Study on the Relaxed Structures and Electronic Properties of Cu [110] Nanowires

        Yue Sun,Jian-Min Zhang,Kewei Xu 한국물리학회 2012 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.61 No.7

        Under the generalized gradient approximation (GGA), first-principles calculations are employed to study the structural stability of Cu nanowires (NWs) along the [110] direction by using the projector-augmented wave potential based on the density functional theory. We present different geometrical structures of Cu [110] NWs with the first three diameters, formed by stacking of atomic polygons with rectangular or hexagonal cross sections perpendicular to the wire axis. For all six-sized Cu NWs, the relaxed structures still have C<sub>2</sub> symmetry and show a "round corner" phenomenon. The calculated binding energies and electronic band structures show the hexagonal wire is not only more stable but also more metallic than the corresponding rectangular one. Therefore the [110] oriented Cu NWs is energetically more favorable in hexagonal cross sections perpendicular to the wire axis in agreement with the experimental result. The vanishing of the neighbor atoms outside the NWs after being cleaved from bulk crystal causes the “skin effect” phenomenon. In fact, the conclusions drawn here are applicable to not only the NWs but also the other surface cases, such as nanobelts, nanotubes, nanocables, clusters, thin films, and so on.

      • KCI등재

        Two-Stage Fermentation for 2-Ketogluconic Acid Production by Klebsiella pneumoniae

        ( Yue Hong Sun ),( Dong Wei ),( Ji Ping Shi ),( Ljiljana Mojovi ),( Zeng Sheng Han ),( Jian Hao ) 한국미생물 · 생명공학회 2014 Journal of microbiology and biotechnology Vol.24 No.6

        2-Ketogluconic acid production by Klebsiella pneumoniae is a pH-dependent process, strictly proceeding under acidic conditions. Unfortunately, cell growth is inhibited by acidic conditions, resulting in low productivity of 2-ketogluconic acid. To overcome this deficiency, a two-stage fermentation strategy was exploited in the current study. During the first stage, the culture was maintained at neutral pH, favoring cell growth. During the second stage, the culture pH was switched to acidic conditions favoring 2-ketogluconic acid accumulation. Culture parameters, including switching time, dissolved oxygen levels, pH, and temperature were optimized for the fed-batch fermentation. Characteristics of glucose dehydrogenase and gluconate dehydrogenase were revealed in vitro, and the optimal pHs of the two enzymes coincided with the optimum culture pH. Under optimum conditions, a total of 186 g/l 2- ketogluconic acid was produced at 26 h, and the conversion ratio was 0.98 mol/mol. This fermentation strategy has successfully overcome the mismatch between optimum parameters required for cell growth and 2-ketogluconic acid accumulation, and this result has the highest productivity and conversion ratio of 2-ketogluconic and produced by microorganism.

      • KCI등재

        The Role of Bank-Affiliated Venture Capital for Parent Banks in Japan: New Evidence

        Yue Sun,우치다 코나리 한국증권학회 2016 Asia-Pacific Journal of Financial Studies Vol.45 No.6

        After controlling for the effect of parent banks’ (PBs) direct ownership, we find that investment by bank-affiliated venture capitals (BVCs) is positively associated with the probability that investee firms have loan balances with PBs in the year they issue an IPO. However, BVCs typically sell off their holdings of investee firms within 2 years after the IPO. Furthermore, the level of BVC ownership does not have explanatory power regarding whether investee firms have loans from PBs. On the contrary, PBs’ direct shareholdings have a positive association with the probability that investee firms have PB loans for many years after IPOs.

      • KCI등재

        The role of CTNNB1 and LEF1 in feather follicles development of Anser cygnoides and Anser anser

        Yue Sun,Yuxuan Zhou,Petunia Msuthwana,Jing Liu,Chang Liu,Cornelius Tlotliso Sello,Yupu Song,Ziqiang Feng,Shengyi Li,Wei Yang,Yunpeng Xu,Xiaomin Yan,Chuanghang Li,Yujian Sui,Jingtao Hu,Yongfeng Sun 한국유전학회 2020 Genes & Genomics Vol.42 No.7

        Background Wingless-types/beta-catenin (Wnt/β-catenin) signaling pathway is one of the most extensively studied transcriptional cascades involved in various types of organogenesis including embryonic and postnatal development. Downy feather quantity is primarily affected by follicular development and gene regulations. Objective This research was aimed to investigate the role of catenin beta-1(CTNNB1) and lymphoid enhancerbinding factor-1 (LEF1) on feather follicles development at different developmental stages. Methods Fluorescence quantitative PCR, Western-blot and immunohistochemical methods were used in Anser cygnoides and Anser anser embryos (E12, E13 E18, and E28) and after birth gosling stages (G18, G48, G88) for gene expression analysis. Results CTNNB1 and LEF1 genes were expressed in Anser cygnoides and Anser anser at different embryonic and after-birth gosling developmental stages and the expression levels were significantly different in different stages (p < 0.05). The mRNA expression of CTNNB1 and LEF1 genes reached the highest level at D88 in Anser cygnoides, while the highest expression levels were at D18 and D88 in Anser anser, and the expression levels of CTNNB1 genes at D88 in all embryonic stages were significantly lower than after-birth stages. CTNNB1 and LEF1 protein expression were the highest at E12 and E28 for Anser cygnoides feather follicles development. While at a similar stage for Anser anser, the expression of CTNNB1 and LEF1 protein was the highest at D48 and D18. Protein expression at embryonic stages was in the epidermis (E) and the hair basal plate (P), the expression site for after-birth stages was in the dermal papilla (DP). Conclusion Our study illustrated that CTNNB1 and LEF1 has an impact on Anser cygnoides and Anser anser feather follicles growth and development.

      • KCI등재

        Multiple Filters-based Output Feedback Fault-tolerant Control for a Class of Uncertain Nonlinear Systems With Event-triggered Mechanism

        Yue Sun,Chuang Gao,Yong-Hui Yang,Li-Bing Wu 제어·로봇·시스템학회 2024 International Journal of Control, Automation, and Vol.22 No.1

        In this paper, a class of nonlinear systems with sensor faults and uncertainty problem are considered. The proposed control scheme is designed based on backstepping procedure. Additionally, three classes of filters are introduced, a serious of K-filters and an auxiliary filter are used to deal with the unmeasurable system states, and the command filters are adopted to avoid the “differential explosion” problem in backstepping design. Furthermore, the bound estimation method is adopted to estimate the unknown system parameters, partial loss fault of sensor and the upper bound of unknown nonlinear functions. Meanwhile, the proposed scheme reduces the amount of calculations in the controller design and and plays a certain role in saving network resources. Even when the sensor fails, the proposed scheme can ensure that all the signals in the closed-loop system are uniformly and ultimately bounded. Finally, a single-link robot arm example is simulated to show the feasibility of the proposed scheme.

      • KCI등재

        Scale inhibition performance of calcium sulfate by 1,6-diaminohexanecontained polyaminoamide dendrimers: Static experiment and MD simulation

        Yue Sun,Li Li,Zhihao Chen,Xiaoshuang Yin,Wenzhong Yang,Yun Chen,Ying Liu 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.115 No.-

        The calcium sulfate scale is a common scale in the industrial water system, which is difficult to beremoved by common chemical cleaning methods. In this paper, a new phosphorous free of 1,6-Diaminohexane-contained polyaminoamide dendrimers (PAMAM) scale inhibitor with a threedimensional(3D) branched structure has been developed. The scale inhibition performances of differentgenerations of PAMAM dendrimers (PAMAM-mid, PAMAM-0G, PAMAM-0.5G and PAMAM-1G) are estimatedby the static scale inhibition method. Moreover, the effects of the scale inhibitor concentrationsand solution temperatures on the CaSO4 scale inhibition efficiency are thoroughly discussed. Results indicatethat the PAMAM-mid and PAMAM-0.5G) exhibit excellent inhibition performance on CaSO4 precipitation. Especially, the CaSO4 scale inhibition efficiency of PAMAM-0.5G is above 95% when the dose is10 mg/L, and the corresponding value is almost 100% when the inhibitor dose is 20 mg/L. In addition,the influence of descaling agents on the crystal and morphology of CaSO4 scales are studied by XRDand SEM tests. The results show that the scale inhibition ability of the PAMAM molecules mainly inhibitsthe growth of these crystal planes by adsorption on the surface of the growing crystal. Molecular dynamicssimulation results find that the PAMAM-0.5G dendrimer molecule can energetically interact well withthree crystal planes of calcium sulfate dihydrate. Finally, the simulation results provide a theoreticalguidance to judge the performance of scale inhibitors and synthesize new high-efficiency scale inhibitor.

      • KCI등재

        Bi-Directional Wireless Power Transfer for Vehicle-to-Grid Systems

        Yue Sun,Cheng Jiang,Zhi-Hui Wang,Lijuan Xiang,Huan Zhang 전력전자학회 2018 JOURNAL OF POWER ELECTRONICS Vol.18 No.4

        A current sourced bi-directional wireless power transfer (WPT) system is proposed to solve the problems that exist in the bi-directional WPT for vehicle-to-grid (V2G) systems. These problems include the fact that these systems are not safe enough, the output power is limited and the control methods are complicated. Firstly, the proposed system adopts two different compensation and control methods on both the primary and secondary sides. Secondly, based on an AC impedance analysis, the working principle is analyzed and the parameter configuration method with frequency stability is given. In order to output a constant voltage, a bi-directional DC/DC circuit and a controllable rectifier bridge are adopted, which are based on the “constant primary current, constant secondary voltage” control strategy. Finally, the effectiveness and feasibility of the proposed methods are verified by experimental results.

      • KCI등재

        Presentation Attacks in Palmprint Recognition Systems

        Yue Sun,Changkun Wang 한국멀티미디어학회 2022 The journal of multimedia information system Vol.9 No.2

        Background: A presentation attack places the printed image or displayed video at the front of the sensor to deceive the biometric recognition system. Usually, presentation attackers steal a genuine user’s biometric image and use it for presentation attack. In recent years, reconstruction attack and adversarial attack can generate high-quality fake images, and have high attack success rates. However, their attack rates degrade remarkably after image shooting. Methods: In order to comprehensively analyze the threat of presentation attack to palmprint recognition system, this paper makes six palmprint presentation attack datasets. The datasets were tested on texture coding-based recognition methods and deep learning-based recognition methods. Results and conclusion: The experimental results show that the presentation attack caused by the leakage of the original image has a high success rate and a great threat; while the success rates of reconstruction attack and adversarial attack decrease significantly.

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