Search

Your search keyword '"Zhong, Yun"' showing total 2,172 results
Start Over Author "Zhong, Yun" Search Limiters Peer Reviewed
2,172 results on '"Zhong, Yun"'

5. Graph Contrastive Learning with Multi-Objective for Personalized Product Retrieval in Taobao Search

Author

Li, Longbin, Zhang, Chao, Li, Sen, Zhong, Yun, Liu, Qingwen, and Zeng, Xiaoyi

Subjects
Computer Science - Information Retrieval
Abstract

In e-commerce search, personalized retrieval is a crucial technique for improving user shopping experience. Recent works in this domain have achieved significant improvements by the representation learning paradigm, e.g., embedding-based retrieval (EBR) and collaborative filtering (CF). EBR methods do not sufficiently exploit the useful collaborative signal and are difficult to learn the representations of long-tail item well. Graph-based CF methods improve personalization by modeling collaborative signal within the user click graph. However, existing Graph-based methods ignore user's multiple behaviours, such as click/purchase and the relevance constraint between user behaviours and items.In this paper, we propose a Graph Contrastive Learning with Multi-Objective (GCL-MO) collaborative filtering model, which solves the problems of weak relevance and incomplete personalization in e-commerce search. Specifically, GCL-MO builds a homogeneous graph of items and then optimizes a multi-objective function of personalization and relevance. Moreover, we propose a modified contrastive loss for multi-objectives graph learning, which avoids the mutual suppression among positive samples and thus improves the generalization and robustness of long-tail item representations. These learned item embeddings are then used for personalized retrieval by constructing an efficient offline-to-online inverted table. GCL-MO outperforms the online collaborative filtering baseline in both offline/online experimental metrics and shows a significant improvement in the online A/B testing of Taobao search.

Published
2023

6. Transcriptomic and physiological comparison of Shatangju (Citrus reticulata) and its late-maturing mutant provides insights into auxin regulation of citrus fruit maturation

Author

Lv, Yuanda, Ren, Shuang, Wu, Bo, Jiang, Caizhong, Jiang, Bo, Zhou, Birong, Zhong, Guangyan, Zhong, Yun, and Yan, Huaxue

Subjects
Plant Biology, Biological Sciences, Genetics, Human Genome, Citrus fruit, auxin, carotenoid, maturation, transcriptome, Ecology, Forestry Sciences, Plant Biology & Botany, Plant biology, Climate change impacts and adaptation
Abstract

Previous studies have shown that abscisic acid (ABA) and ethylene are involved in pulp maturation and peel coloration in the nonclimacteric citrus fruits. There are also signs indicating that other plant hormones may play some roles in citrus fruit ripening. In this study, we compared profiles of genome-wide gene expression and changes in hormones and peel pigments between fruits of Shatangju mandarin (Citrus reticulata Blanco, designated WT) and its natural mutant, Yuenongwanju (designated MT). The MT fruit matures ~2 months later than the WT fruit. Significant differences in fruit diameter, total soluble solids, titratable acid content, chlorophylls and carotenoids were detected between the fruits of the two genotypes at the sampled time points. Genome-wide transcriptome profiling showed that many genes involved in auxin and ABA metabolism and/or signaling pathways were differentially expressed between the MT and the WT fruits. Importantly, the expression of CrYUCCA8 was significantly lower and the expression of CrNCED5 was significantly higher in WT than in MT fruits at 230 and 250 DPA, respectively. In addition, the indole-3-acetic acid (IAA) level in the MT fruit was significantly higher than that in the WT counterpart, whereas a significantly lower level of ABA was detected in the mutant. Treatment of the WT fruit with exogenous IAA significantly delayed fruit maturation. Our results provide experimental evidence supporting the notion that auxin is a negative regulator of fruit maturation in citrus.

Published
2023

7. Application of Resilient Joint with Steel Rod Fuse in Plastic Damage Mitigation of Steel Moment Frame Under Earthquake Event

Author

Li, Guo-Qiang, Zhong, Yun-Long, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Mazzolani, Federico M., editor, Piluso, Vincenzo, editor, Nastri, Elide, editor, and Formisano, Antonio, editor

Published
2024
Full Text
View/download PDF

12. Low-dose esketamine improves acute postoperative pain in patients undergoing thoracoscopic surgery

Author

Qing-wei Zhang, Xin Wang, Zhong-yun Wang, and He-liang Sun

Subjects
Esketamine, Thoracic surgery, Analgesia, Inflammatory response, Anesthesiology, RD78.3-87.3
Abstract

Abstract Purpose The current study was designed to investigate the analgesic effect of esketamine on patients underwent thoracoscopic surgery and the underlying mechanism. Methods In this randomized, double blind, placebo-controlled study, 60 patients scheduled to undergo thoracoscopic lobectomy or segmentectomy were randomized to two groups to receive esketamine (group ESK) or saline (group SAL), respectively. 0.25 mg·kg−1 esketamine was given in group ESK for induction of anesthesia, and 0.12 mg·kg−1·h−1 esketamine for intraoperative maintenance. Group SAL received an equal volume of saline. The primary outcomes were the visual analogue scale (VAS) pain scores at rest and deep cough state which evaluated at departure from post-anesthesia care unit (PACU) (T1), 6 h, 24 h and 48 h after surgery (T2–T4). The secondary outcomes included the levels of white blood cell (WBC) count, absolute neutrophil count (ANC), interleukin-6 (IL-6), procalcitonin (PCT), anxiety/depression scores at T3, oxygen saturation (SpO2), and adverse reactions. Results Esketamine significantly decreased both rest and cough VAS pain scores at T1, and rest pain scores at T1, T2 and T4. Patients in ESK group had significantly lower WBC and ANC levels than SAL group, while the alteration of IL-6 and PCT levels between groups showed no significance. The anxiety scores of patients in both groups were significantly decreased after surgery. However, the depression scores of patients in ESK group did not decrease after surgery when compared with the preoperation. The postoperative SpO2 and the incidence of adverse reaction including postoperative nausea, vomiting, dizziness and dissociative symptom showed no significant difference between two groups (p > 0.05). Conclusion Esketamine can alleviate the acute postoperative pain of patients undergoing thoracoscopic surgery without increasing adverse reactions, and the underlying mechanism may be associated with the reduction of postoperative inflammation. Trial registration Registered at Chinese Clinical Trial Registry on February 7, 2022 (ChiCTR 2200056524). Graphical Abstract

Published
2024
Full Text
View/download PDF

25. International Consensus on Natural Orifice Specimen Extraction Surgery (NOSES) for Gastric Cancer (2019)

Author

The International Alliance of NOSES, Guan, Xu, Liu, Zheng, Parvaiz, Amjad, Longo, Antonio, Saklani, Avanish, Shafik, Ali A., Cai, Jian-Chun, Ternent, Charles A., Chen, Lin, Kayaalp, Cuneyt, Sumer, Fatih, Nogueira, Fernanda, Gao, Feng, Han, Fang-Hai, He, Qing-Si, Chun, Ho-Kyung, Huang, Chang-Ming, Huang, Hai-Yang, Huang, Rui, Jiang, Zhi-Wei, Khan, Jim S., da Costa Pereira, Joaquim Manuel, Nunoo-Mensah, Joseph W., Son, Jung Tack, Kang, Liang, Uehara, Keisuke, Lan, Ping, Li, Le-Ping, Liang, Han, Liu, Bing-Rong, Liu, Juan, Ma, Dan, Shen, Ming-Yin, Islam, Mohammad Rashidul, Samalavicius, Narimantas Evaldas, Pan, Kai, Tsarkov, Petr V., Qin, Xin-Yu, Escalante, Ricardo, Efetov, Sergey, Jeong, Seung Kyu, Lee, Suk-Hwan, Sun, Dong-Hui, Sun, Li, Garmanova, Tatiana, Tian, Yan-Tao, Wang, Gui-Yu, Wang, Guo-Jun, Wang, Guo-Rong, Wang, Xiao-Qiang, Chen, William Tzu-Liang, Lee, Woo-Yong, Yan, Su, Yang, Zu-Li, Yu, Gang, Yu, Pei-Wu, Zhao, Dan, Zhong, Yun-Shi, Wang, Jian-Ping, Wang, Xishan, and Wang, Xishan, editor

Published
2023
Full Text
View/download PDF

33. Field emission from AlGaN nanowires with low turn-on field

Author

Giubileo, Filippo, Di Bartolomeo, Antonio, Zhong, Yun, Zhao, Songrui, and Passacantando, Maurizio

Subjects
Physics - Applied Physics, Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
Abstract

We fabricate AlGaN nanowires by molecular beam epitaxy and we investigate their field emission properties by means of an experimental setup using nano-manipulated tungsten tips as electrodes, inside a scanning electron microscope. The tip-shaped anode gives access to local properties and allows collecting electrons emitted from areas as small as 1$\mu m^2$. The field emission characteristics are analyzed in the framework of Fowler-Nordheim theory and we find a field enhancement factor as high as $\beta$ = 556 and a minimum turn-on field $E_{turn-on}$ = 17 V/$\mu$m for a cathode-anode separation distance d = 500 nm. We show that for increasing separation distance, $E_{turn-on}$ increases up to about 35 V/$\mu$m and $\beta$ decreases to 100 at d = 1600 nm. We also demonstrate the time stability of the field emission current from AlGaN nanowires for several minutes. Finally, we explain the observation of modified slope of the Fowler-Nordheim plots at low fields in terms of non-homogeneous field enhancement factors due to the presence of protruding emitters., Comment: 13 pages, 5 figures

Published
2020

48. Investigating the collective impact of postponement, scrap, and external suppliers on multiproduct replenishing decision

Author

Yuan-Shyi P. Chiu, Zhong-Yun Zhao, Fan-Yun Pai, and Tiffany Chiu

Subjects
Industrial engineering. Management engineering, T55.4-60.8, Production management. Operations management, TS155-194
Abstract

This study examines the collective impact of postponement, scrap, and subcontracting standard components on the multiproduct replenishing decisions. Rapid response, desirable quality, and various goods guide the client’s demands in today’s competitive market. Therefore, many manufacturing firms search for alternative fabrication and outsourcing strategies during the production planning stage to satisfy the client’s expectations, minimize fabrication-inventory costs, and smoothen machine utilization. To effectively help producers meet today's client's needs and enhance their competitive advantage, we develop a two-stage multiproduct replenishing system incorporating scraps, standard parts subcontracting, commonality, and delayed differentiation. To reduce the production uptime, stage one has a hybrid fabrication process for the common components (i.e., a partial outsourcing strategy), and stage two manufactures the finished multiproduct. In-house fabrication processes in both stages are imperfect; a screening process detects and removes scraps to maintain the finished batch quality. We determine the cost-minimized operating cycle. The findings reveal the collective impact of postponement, scrap, and external suppliers on this multi-product replenishment problem and can be used to facilitate production planning and decision-making.

Published
2023
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results