Quality Comparison of Sweet Flour Pastes Produced via Natural and Temperature-controlled Fermentation

Jing Deng,Huachang Wu,Zhirong Yang 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.6

The quality of sweet flour pastes (SFP) produced via natural and temperature-controlled fermentation was investigated. Temperature-controlled fermentation shortened the production time with no significant (p<0.05) differences between sample types in amino nitrogen, total acid, reducing sugar, and organic acid concentrations observed at the end of fermentation. Naturally fermented SFP exhibited higher concentrations of free amino acids than temperature-controlled fermented SFP. Analysis of SFP volatile compounds showed that naturally fermented SFP samples had higher concentrations of aroma constituents. Ethyl palmitate was the dominant ester in SFP with a 5.2× higher content of ethyl palmitate than for naturally fermented SFP. In addition, 4-ethyl guaiacol and 4-vinyl guaiacol were only identified in naturally fermented SFP samples. Temperature-controlled fermentation accelerates the production process, and naturally fermented SFP exhibited a higher quality.

Resonance-based sparse improved fast independent component analysis and its application to the feature extraction of planetary gearboxes

Jing Zhu,Aidong Deng,Jing Li,Minqiang Deng,Wenqing Sun,Qiang Cheng,Yang Liu 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.11

A resonance-based sparse improved fast independent component analysis (ICA) (RSIFICA) is proposed to extract the fault characteristics of planetary gearbox. First, the signal is decomposed using resonance sparse signal decomposition (RSSD). Second, highresonance components were retained while others were eliminated. Finally, the signal after dimension reduction was analyzed using ICA, and the fault characteristic frequency was extracted through envelope spectrum analysis. In this process, the preset Q parameter of RSSD is optimized on the basis of fuzzy entropy and ant-lion optimization algorithm. The accuracy of RSSD was improved by performing time-frequency entropy component selection. FastICA was improved, and the slow convergence problem of ICA was solved. Results showed that RSIFICA could extract the fault characteristic frequency accurately, and the calculation efficiency of FastICA increased by 21.49 %. In terms of extracting the fault features, its performance could be better than EMD-FastICA.

Experimental investigation of masonry walls supported by steel plate-masonry composite beams

Deng-Hu Jing,Jian-Fei Chen,Giuseppina Amato,Ting Wu,Shuang-Yin Cao 국제구조공학회 2018 Steel and Composite Structures, An International J Vol.28 No.6

Masonry walls are sometimes removed in buildings to either make new passages or increase the usable space. This may change the loading paths in the structure, and require new beams to transfer the loads which are carried by the masonry walls that are to be removed. One possible method of creating such new beams is to attach steel plates onto part of the existing walls to form a steel plate-masonry composite (SPMC) beam, leading to a new structure with part of the masonry wall supported by a new SPMC beam. This paper presents an experimental investigation into the interaction between the SPMC beam and the masonry wall above. Five SPMC beams supporting a masonry wall were tested to study the influence of parameters including the height-to-span ratio of the masonry wall, height of the beam and thickness of the steel plates. The test results, including failure mode, load-carrying capacity, load-deflection curves and strain distribution, are presented and discussed. It is found that for developing better arching effect in the masonry wall the ratio of the in-plane flexural stiffness of the masonry wall to the flexural stiffness of the SPMC beam must be between 2.8 and 7.1.

Gamification teaching for low-grad children in primary school based on social emotional learning

Deng Jing,Pan Younghwan 한국서비스디자인학회 2021 한국서비스디자인학회 학술대회자료집 Vol.2021 No.-

Flexural behaviour of steel plate-masonry composite beams

Deng-Hu Jing,Shuang-Yin Cao,Lei Shi 국제구조공학회 2012 Steel and Composite Structures, An International J Vol.13 No.2

Steel plate-masonry composite structure is a newly-developed type of structural technique applicable to existing masonry buildings by which the load-bearing walls can be removed for large spaces. This kind of structure has been used in practice for its several advantages, but experimental investigation on its elements is nearly unavailable in existing literature. This paper presents an experimental study on the flexural behaviour of four steel plate-masonry composite beams loaded by four-point bending. Test results indicate that failure of the tested beams always starts from the local buckling of steel plate, and that the tested beams can satisfy the requirement of service limit state. In addition, the assumption of plane section is still remained for steel plate prior to local buckling or steel yielding. By comparative analyses, it was also verified that the working performance of the beam is influenced by the cross-section of steel plate, which can be efficiently enhanced by epoxy adhesive rather than cement mortar or nothing at all. Besides, it was also found that the contribution of the encased masonry to the flexural capacity of the composite beam cannot be ignored when the beam is injected with epoxy adhesive.

Research on the Construction of Evaluation Index System of Ideological and Political Teaching Ability of Professional Teachers in Colleges and Universities

邓晶(Jing Deng),张睦南(Munan Zhang),胡永娇(Yongjiao Hu),孙荣(Rong Sun) 아시아사회과학학회 2023 International Science Research Vol.3 No.2

摘要: 构建科学合理的高校专业课教师课程思政教学能力评价体系既是对高校专业课教师思政育人教学能力的全面检验,也是引导教师专业课课程思政能力提升的有效途径。本研究分析当前高校教师课程思政教学能力评价工作存在的突出问题,提出高校教师课程思政教学能力评价体系构建应建立在针对性原则、全局性原则、可操作性原则和发展性原则的基础上。从教学准备、教学实施、教学反思与交流三个维度,构建由 3 个一级指标,7 个二级指标,19 个三级指标组成的高校教师课程思政教学能力评价指标体系。 Constructing a scientific and reasonable evaluation system for professional course teachers' ideological and political teaching ability can not only test the teaching ability of professional course teachers, but also guide teachers to improve their ideological and political teaching ability.This study analyzes the outstanding problems existing in the evaluation of college curriculum ideological and political teaching ability, and proposes that the construction of the evaluation system of college teachers' curriculum ideological and political teaching ability should be based on the principle of pertinence, overall principle, operability principle and development principle.The evaluation is carried out from three dimensions: teaching preparation, teaching implementation, teaching reflection and communication.An evaluation index system of ideological and political teaching ability of college teachers is set up, which consists of 3 first-level indicators, 7 second-level indicators and 19 third-level indicators.

Homeownership Determinants of Young People in Post-socialist China and the Implications for Social Stratification

Wen Jing Deng,Joris S. C. M. Hoekstra,Marja G. Elsinga 한국주거학회 2015 한국주거학회 국제학술대회논문집 Vol.2015 No.4

This article aims to study the determinants of young Chinese people’s homeownership. More specifically, it aims to compare the ups and downs of ‘redistributive power’ and ‘market ability’, as well as the influence of ‘ascribed’ and ‘achieved’ social status, in the Chinese social stratification after more than three decades of market transition. Firstly, the paper discusses the issues which link the Chinese housing system and young people. Subsequently, logistic regression analysis was applied to investigate the relationship between explanatory variables and homeownership outcomes among young people. In relation to this, the paper distinguishes between independent homeowners (live independently), dependent homeowners (live with home owning parents), and non-home owners, in order to further explore the impact of home-owning parents. Results show that a redistributive power still persists in the Chinese housing allocation, mainly in the form of territorial affiliation (hukou registration). Ascribed social status, such as original hukou site and social status of parents, is still of influence on homeownership among young people. The paper ends with a discussion of the implications of the research findings for the social stratification.

The Gender-Sensitive Social Risk Factors for Internet Addiction in College Undergraduate Students

Xia Lin,Jing-yan Gu,Wan-jun Guo,Ya-jing Meng,Hui-yao Wang,Xiao-jing Li,Wei Deng,Lian-sheng Zhao,Xiao-hong Ma,Ming-li Li,Ting Chen,S,K,Cheng,Tao Li 대한신경정신의학회 2021 PSYCHIATRY INVESTIGATION Vol.18 No.7

Objective The current study aims to explore precipitating and social risk factors for internet addiction (IA) in university undergraduate students, and to provide evidence for interventions and the early prevention of IA in different genders. Methods Four thousand eight hundred and fifty-eight college sophomores completed an online survey on their internet use-related behaviours and social risk factors. Results We found that more male (8.3%) than female students (5.4%) had moderate and severe IA. The main online activity in the moderate and severe IA groups was online gaming in males and online streaming in females. Roommates engaging in similar internetbased entertainment was a risk factor of IA only for males, while not being in a romantic relationship was a risk factor of IA for females only. Infatuation with the internet before college and adjustment problems for college life were shared risk factors for both genders in the mild and moderate IA groups. Conclusion IA was a common phenomenon in college students with shared and unique precipitating and social risk factors in males and females. The gender-sensitive risk factors for IA warranted earlier and individualized intervention and prevention strategies for IA in this population.

Culture-Positive Spontaneous Ascitic Infection in Patients with Acute Decompensated Cirrhosis: Multidrug-Resistant Pathogens and Antibiotic Strategies

Jing Liu,Yanhang Gao,Xianbo Wang,Zhiping Qian,Jinjun Chen,Yan Huang,Zhongji Meng,Xiaobo Lu,Guohong Deng,Feng Liu,Zhiguo Zhang,Hai Li,Xin Zheng 연세대학교의과대학 2020 Yonsei medical journal Vol.61 No.2

Purpose: This study investigated multidrug-resistant (MDR) pathogens and antibiotic strategies of culture-positive spontaneousascitic infection (SAI) in patients with acute decompensated cirrhosis. Materials and Methods: We retrospectively analyzed 432 acute decompensated cirrhotic patients with culture-positive SAI from11 teaching hospitals in China (January 2012 to May 2018). A Cox proportional hazards model analysis was conducted to identifyindependent predictors of 28-day mortality. Results: A total of 455 strains were isolated from 432 ascitic culture samples. Gram-negative bacteria (GNB), gram-positive bacteria(GPB), and fungi caused 52.3, 45.5, and 2.2% of all SAI episodes, respectively. Episodes were classified as nosocomial (41.2%), healthcare-related (34.7%), and community-acquired (24.1%). Escherichia coli (13.4%) and Klebsiella pneumoniae (2.4%) were extendedspectrumβ-lactamase producing isolates. The prevalence of methicillin-resistant Staphylococcus aureus was 1.1%. Ceftazidime,cefepime, aztreonam, and amikacin were recommended as first-line antibiotics agents for non-MDR GNB infections; piperacillin/tazobactam and carbapenems for MDR GNB in community-acquired and healthcare-related or nosocomial infections, respectively;and vancomycin or linezolid for GPB infections, regardless of drug-resistance status. Multivariate analysis revealed days ofhospital stay before SAI, upper gastrointestinal bleeding, white blood cell count, alanine aminotransferase, serum creatinine concentration,total bilirubin, and international normalized ratio as key independent predictors of 28-day mortality. Conclusion: MDR pathogens and antibiotic strategies were identified in patients with acute decompensated cirrhosis with culture-positive SAI, which may help optimize therapy and improve clinical outcomes.

A Fiber Spool’s Vibration Sensitivity Optimization Based on Orthogonal Experimental Design

Jing Gao,Linbo Zhang,Dongdong Jiao,Guanjun Xu,Xue Deng,Qi Zang,Honglei Yang,Ruifang Dong,Tao Liu,Shougang Zhang 한국광학회 2024 Current Optics and Photonics Vol.8 No.1

A fiber spool with ultra-low vibration sensitivity has been demonstrated for the ultra-narrowlinewidth fiber-stabilized laser by the multi-object orthogonal experimental design method, which can achieve the optimization object and analysis of influence levels without extensive computation. According to a test of 4 levels and 4 factors, an L 16 (4 4 ) orthogonal table is established to design orthogonal experiments. The vibration sensitivities along the axial and radial directions and the normalized sums of the vibration sensitivities are determined as single objects and comprehensive objects, respectively. We adopt the range analysis of object values to obtain the influence levels of the four design parameters on the single objects and the comprehensive object. The optimal parameter combinations are determined by both methods of comprehensive balance and evaluation. Based on the corresponding fractional frequency stability of ultra-narrow-linewidth fiber-stabilized lasers, we obtain the final optimal parameter combination A3B1C2D1, which can achieve the fiber spool with vibration sensitivities of 10 −12 /g magnitude. This work is the first time to use an orthogonal experimental design method to optimize the vibration sensitivities of fiber spools, providing an approach to design the fiber spool with ultra-low vibration sensitivity.