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Article ; Online: Effectiveness Study on Online or Blended Language Learning Based on Student Achievement

Tong Zhou / Wei Zhang

Sustainability, Vol 14, Iss 7303, p

A Systematic Review of Empirical Studies

2022 Volume 7303

Abstract: The ubiquitous impacts resulting from the COVID-19 pandemic have profoundly changed the education sector and marked research interest in online or blended learning can be witnessed. As a pervasive learning activity of paramount significance, online ... ...

Abstract	The ubiquitous impacts resulting from the COVID-19 pandemic have profoundly changed the education sector and marked research interest in online or blended learning can be witnessed. As a pervasive learning activity of paramount significance, online language learning has aroused widespread attention. Nonetheless, few systematic reviews concerning the effectiveness of online language learning have been published. With the help of CiteSpace, this study systematically investigated 103 included articles from the SSCI of empirical studies from 44 journals for the purpose of filling the research gap in this field, providing a better understanding of the research trends, exploring effective ways to implement online language courses, and testifying to the ability of CiteSpace to track research hotspots. The findings show that effectiveness studies on online language learning principally focus on assisted tools (42.72%), instructional approaches (36.89%), and specific courses (20.39%). Lack of adequate cooperation among research institutions and the dominant position of online English learning (82.52%) can be witnessed. Despite the small sample size of 103 included articles, the validation of CiteSpace in terms of tracking the research trends or hotspots is confirmed. However, the proportion of each research focus is not compatible with the results of a comprehensive full-text analysis. This literature review also probes into various methods to measure effectiveness more scientifically and effective ways to implement online language courses. Theoretical as well as practical implications and future research directions are clarified.
Keywords	online language learning ; blended language learning ; student achievement ; effectiveness ; systematic literature review ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
Subject code	370
Language	English
Publishing date	2022-06-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Seawater Accelerated the Aging of Polystyrene and Enhanced Its Toxic Effects on Caenorhabditis elegans

Tong Zhou / Jiajie Wu / Yun Liu / An Xu

International Journal of Molecular Sciences, Vol 24, Iss 24, p

2023 Volume 17219

Abstract: Microplastics (MPs) are emerging pollutants and pose a significant threat to marine ecosystems. Although previous studies have documented the mechanisms and toxic effects of aging MPs in various environments, the impact of the marine environment on MPs ... ...

Abstract	Microplastics (MPs) are emerging pollutants and pose a significant threat to marine ecosystems. Although previous studies have documented the mechanisms and toxic effects of aging MPs in various environments, the impact of the marine environment on MPs remains unclear. In the present study, the aging process of polystyrene (PS) in seawater was simulated and the changes in its physicochemical properties were investigated. Our results showed that the surface of the PS eroded in the seawater, which was accompanied by the release of aged MPs with a smaller size. In situ optical photothermal infrared microspectroscopy revealed that the mechanism of PS aging was related to the opening of the carbonyl group and breaking of the bond between carbon and benzene removal. To verify the toxic effects of aged PS, Caenorhabditis elegans was exposed to PS. Aged PS resulted in a greater reduction in locomotion, vitality, and reproduction than virgin PS. Mechanistically, aged PS led to oxidative stress, high glutathione s-transferase activity, and high total glutathione in worms. Together, our findings provided novel information regarding the accelerated aging of PS in seawater and the increased toxicity of aged PS, which could improve our understanding of MPs’ ecotoxicity in the marine environment.
Keywords	microplastics ; seawater ; aging ; Caenorhabditis elegans ; toxic effects ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
Language	English
Publishing date	2023-12-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Potential ecological risk assessment of land use structure based on MCCA model

Zhou-Qian Gao / Fei Tao / Yin-Hao Wang / Tong Zhou

Ecological Indicators, Vol 155, Iss , Pp 110931- (2023)

A case study in Yangtze River Delta Region, China

2023

Abstract: Since land resources are essential to human survival, the over-exploitation and unreasonable utilization of land threatens the sustainability of human society. This paper uses the well-developed Yangtze River Delta (YRD) region as a case study, and ... ...

Abstract	Since land resources are essential to human survival, the over-exploitation and unreasonable utilization of land threatens the sustainability of human society. This paper uses the well-developed Yangtze River Delta (YRD) region as a case study, and adopts an improved Mixed-cell Cellular Automata Model (MCCA) to simulate the potential utilization of land resources in 2025 and 2035. Then, the paper attempts to construct a comprehensive assessment system that integrates multiple indicators, and evaluates regional risk changes at a micro patch-cell level and a macro city. The results suggest that (1) The utilization of land resources varies greatly in the YRD region from 2020 to 2035. While Shanghai will continue to make use of available built up land resources, the majority of land resources in Jiangsu Province will shift away from being agricultural in nature. Since forests make up a majority of the land resources in Zhejiang Province, and forests and agricultural land make up a majority of land resources in Anhui Province, the change in land utilization in these two provinces will be more gradual. (2) Changes in land utilization are also likely to cause ecological risks. The risk level in Shanghai is the highest, it is relatively high in Zhejiang but is likely to decrease, relatively low in Jiangsu but likely to increase, and Anhui has the lowest risk level. (3) The K-means clustering method obtained three ecological risk zones of the YRD, and the overall risk level is the highest in the central-eastern zoning ③, followed by the southern zoning ②, and the lowest in the northern zoning ①. Furthermore, the agglomeration pattern of the three zones transforms from L-L to H-H. (4) This paper puts forward corresponding suggestions and countermeasures for four aspects, including the strengthening of agricultural land protection, the regulation of built-up land use expansion, the coordination of an all-rounded approach of urban development, and the fostering of regional sustainable development, in hopes of optimizing ...
Keywords	Land use simulation ; Mixed-cell Cellular Automata ; The Yangtze River Delta region ; Ecological risk assessment system ; Ecology ; QH540-549.5
Subject code	910
Language	English
Publishing date	2023-11-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Spatiotemporal Heterogeneity and Driving Mechanism of Co-Ordinated Urban Development

Fei Tao / Guoan Tang / Yihao Wu / Tong Zhou

Sustainability, Vol 14, Iss 5105, p

A Case Study of the Central Area of the Yangtze River Delta, China

2022 Volume 5105

Abstract: Urban system is a complex entirety composed of various subsystems, including land, population, economy, and society. The coordinated development of these subsystems is important for ensuring the advancement and improvement of the new urbanization process. ...

Abstract	Urban system is a complex entirety composed of various subsystems, including land, population, economy, and society. The coordinated development of these subsystems is important for ensuring the advancement and improvement of the new urbanization process. Quantitatively evaluating the coordinated development level of a city or urban agglomeration is conducive to scientific urban planning and decision-making. In this paper, we constructed a multi-index evaluation system that includes land urbanization, population urbanization, economic urbanization, and social urbanization indicators to assess the degree of coordinated urbanization development. Experiments were then conducted in the central area of the Yangtze River Delta (YRD) from 2000 to 2019 using remote sensing images and statistical yearbook data. The driving factors of the urbanization evolution were also evaluated by the Geographically and Temporally Weighted Regression (GTWR) model. The conclusions were drawn as follows: (1) The degree of coordinated urbanization development in the study area was constantly improving, from an extremely uncoordinated level in 2000 to a high-quality coordinated level in 2019; (2) During the period 2000–2019, the distribution of the cities with high coordinated development levels presented a northwest-southeast pattern, and the gravity center of the region constantly moved to the south; (3) In terms of the impact of various urbanization subsystems on the coordinated urbanization development in the YRD, economic urbanization had the greatest impact, while land urbanization had the least impact. (4) In connection with the problems existing in different dimensions of urbanization, we put forward corresponding development countermeasures and path suggestions based on the actual situation of the study area.
Keywords	central area of Yangtze River Delta ; coordinated urbanization development ; spatiotemporal heterogeneity ; Geographically and Temporally Weighted Regression (GTWR) ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
Subject code	910 ; 710
Language	English
Publishing date	2022-04-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Hierarchical NiO

Feng Zai, Shi / Han Wu, Yu / Tong Zhou, Yi / Tian Hui Li, Zhao / Bin Guo, Chun

Journal of colloid and interface science

2023 Volume 643, Page(s) 350–359

Abstract: Rational design of low-cost and high-efficiency electrocatalysts for hydrogen evolution reaction (HER) is critical for scalable and sustainable hydrogen production from economical water-alkali splitting. Herein, density functional theory (DFT) ... ...

Abstract	Rational design of low-cost and high-efficiency electrocatalysts for hydrogen evolution reaction (HER) is critical for scalable and sustainable hydrogen production from economical water-alkali splitting. Herein, density functional theory (DFT) calculations reveal that coupling NiO
Language	English
Publishing date	2023-04-15
Publishing country	United States
Document type	Journal Article
ZDB-ID	241597-5
ISSN	1095-7103 ; 0021-9797
ISSN (online)	1095-7103
ISSN	0021-9797
DOI	10.1016/j.jcis.2023.04.043
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Effect of exercise prescription teaching on exercise quality and mental health status of college students.

Zhong, Xing-Long / Sheng, Da-Li / Cheng, Tong-Zhou / Zhang, Zhe-Wei

World journal of psychiatry

2023 Volume 13, Issue 5, Page(s) 191–202

Abstract: Background: The teaching mode of fitness exercise prescriptions for college students in physical education conforms to the scientific principles and rules of fitness, which can adapt to the characteristics of students' individual physiological functions ...

Abstract	Background: The teaching mode of fitness exercise prescriptions for college students in physical education conforms to the scientific principles and rules of fitness, which can adapt to the characteristics of students' individual physiological functions and stimulate their interest in learning. Aim: To analyze the effect of prescribed exercise teaching on the sports quality and mental health of college students. Methods: The participants of the study were 240 students in our class of 2021, of which 142 were men and 98 were women. The 240 students were randomly divided into an experimental group using the exercise prescription teaching model and a control group using the conventional teaching model. The experimental and control groups were divided into four classes of 30 students each. The teaching activities of the two teaching mode groups were strictly controlled, and the same tests were used before and after the experiment to test the subjects' exercise quality (in-cluding standing long jump, 50 m race, 800 m race, sit-ups, sit-and-reach), physical form (including height, weight, Ketorolai index), cardiopulmonary function (including heart rate, blood pressure, spirometry, 12-min running distance, maximum oxygen intake) and mental health (SCL-90, including somatization, obsessive-compulsive, interpersonal, depression, anxiety, hostility, phobia, paranoia, psychotic symptoms) to understand the effects of the exercise prescription teaching mode on students' physical and mental health status. Results: There were differences in the exercise scores of standing long jump, 50 m, 800 m/1000 m running, sit-ups, and sit-and-reach in the experimental group after the experiment compared with those before the experiment, and the above indices of the experimental group were different from those of the control group after the experiment ( Conclusion: Exercise prescription teaching can mobilize college students' consciousness, enthusiasm, and initiative; expand personalities; enhance physical fitness and improve their mental health more than the conventional fitness exercise prescription teaching method.
Language	English
Publishing date	2023-05-19
Publishing country	United States
Document type	Journal Article
ISSN	2220-3206
ISSN	2220-3206
DOI	10.5498/wjp.v13.i5.191
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Paravertebral abscess and bloodstream infection caused by Burkholderia pseudomallei after acupuncture

Lingyan Xiao / Tong Zhou / Jun Chen / Yanqing Hu / Yishan Zheng

BMC Complementary Medicine and Therapies, Vol 22, Iss 1, Pp 1-

a case report

2022 Volume 5

Abstract: Abstract Background Various pathogenic bacterial infections caused by acupuncture have raised widespread concern, but paravertebral abscesses and bloodstream infections of Burkholderia pseudomallei (B.pseudomallei) after acupuncture have not been ... ...

Abstract	Abstract Background Various pathogenic bacterial infections caused by acupuncture have raised widespread concern, but paravertebral abscesses and bloodstream infections of Burkholderia pseudomallei (B.pseudomallei) after acupuncture have not been reported. Case presentation A 49-year-old man was admitted to hospital with recurrent back pain and fever for 1 month, along with the finding of undiagnosed diabetes. He was considered to have tuberculosis because of unrelieved high fever and pulmonary nodules. Bilateral blood culture suggested B.pseudomallei infection, MRI of the lumbar spine suggested paravertebral abscess, and the final diagnosis was paravertebral abscess and bloodstream infection after acupuncture combined with migrating lung infection. He was discharged after abscess debridement and intensive anti-infective therapy, but no further oral antibiotics were administered because of his poor adherence. More than 5 months later, he was readmitted with the urine culture findings of B.pseudomallei. No other abscess formation was observed and he received oral antibiotics for more than 3 months without recurrence. Conclusions Acupuncture may lead to B.pseudomallei infection in high-risk groups, and inadequate treatment can lead to recurrent infections.
Keywords	Melioidosis ; Burkholderia pseudomallei ; Acupuncture ; Paravertebral abscess ; Bloodstream infection ; Urinary tract infection ; Other systems of medicine ; RZ201-999
Subject code	610
Language	English
Publishing date	2022-03-01T00:00:00Z
Publisher	BMC
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Influence of Sparger Type on Mass Transfer in a Pilot-Scale Internal Loop Airlift Reactor

Zongliang Wang / Hongshan Guo / Tong Zhou / Zhenmin Cheng / Zibin Huang

Processes, Vol 10, Iss 429, p

2022 Volume 429

Abstract: In a pilot-scale internal loop airlift reactor with a height of 5.5 m and a main column diameter of 0.484 m, the influence of three gas sparger structures (ladder distributor, tri-nozzle sparger and perforated plate) on the volumetric mass transfer ... ...

Abstract	In a pilot-scale internal loop airlift reactor with a height of 5.5 m and a main column diameter of 0.484 m, the influence of three gas sparger structures (ladder distributor, tri-nozzle sparger and perforated plate) on the volumetric mass transfer coefficient k L a was investigated. It was found that the perforated plate produces the highest gas holdup difference and circulating liquid velocity between the riser and the downcomer. The perforated plate provides the most efficient mass transfer due to the more uniform gas distribution and higher circulating liquid velocity, followed by the ladder distributor and tri-nozzle spargers. Compared with the tri-nozzle sparger, the perforated plate increases the value of k L a by up to 16% at a superficial velocity of 0.15 m/s. Interestingly, the analysis of the liquid-phase mass transfer coefficient k L and specific area a with respect to gas velocity shows that the mass transfer rate is primarily controlled by a. By comparing the predictions of different mass transfer models, the slip velocity model based on penetration theory yields a satisfactory agreement with the experimental results within ±15% error. Meanwhile, empirical correlations regarding gas holdup and k L a were developed and were found to have good consistency with experimental values.
Keywords	internal loop airlift reactor ; mass transfer ; sparger ; gas holdup ; liquid circulation velocity ; Chemical technology ; TP1-1185 ; Chemistry ; QD1-999
Subject code	660 ; 621
Language	English
Publishing date	2022-02-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: A Nano-Cleaning Fluid for Downhole Casing Cleaning

Hanxuan Song / Yan Ye / Zhen Zhang / Shuang Wang / Tong Zhou / Jixiang Guo / Shiling Zhang

Polymers, Vol 15, Iss 1447, p

2023 Volume 1447

Abstract: In drilling and completion projects, sludge is formed as a byproduct when barite and oil are mixed, and later sticks to the casing. This phenomenon has caused a delay in drilling progress, and increased exploration and development costs. Since nano- ... ...

Abstract	In drilling and completion projects, sludge is formed as a byproduct when barite and oil are mixed, and later sticks to the casing. This phenomenon has caused a delay in drilling progress, and increased exploration and development costs. Since nano-emulsions have low interfacial surface tension, wetting, and reversal capabilities, this study used nano-emulsions with a particle size of about 14 nm to prepare a cleaning fluid system. This system enhances stability through the network structure in the fiber-reinforced system, and prepares a set of nano-cleaning fluids with adjustable density for ultra-deep wells. The effective viscosity of the nano-cleaning fluid reaches 11 mPa·s, and the system is stable for up to 8 h. In addition, this research independently developed an indoor evaluation instrument. Based on on-site parameters, the performance of the nano-cleaning fluid was evaluated from multiple angles by heating to 150 °C and pressurizing to 3.0 Mpa to simulate downhole temperature and pressure. The evaluation results show that the viscosity and shear value of the nano-cleaning fluid system is greatly affected by the fiber content, and the cleaning efficiency is greatly affected by the concentration of the nano-emulsion. Curve fitting shows that the average processing efficiency could reach 60–85% within 25 min and the cleaning efficiency has a linear relationship with time. The cleaning efficiency has a linear relationship with time, where R 2 = 0.98335. The nano-cleaning fluid enables the deconstruction and carrying of the sludge attached to the well wall, which accomplishes the purpose of downhole cleaning.
Keywords	nano-emulsion ; barium sulfate scale ; polymers ; compound evaluation system ; Organic chemistry ; QD241-441
Subject code	532
Language	English
Publishing date	2023-03-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Deep Spatial-Spectral Subspace Clustering for Hyperspectral Images Based on Contrastive Learning

Xiang Hu / Teng Li / Tong Zhou / Yuanxi Peng

Remote Sensing, Vol 13, Iss 4418, p

2021 Volume 4418

Abstract: Hyperspectral image (HSI) clustering is a major challenge due to the redundant spectral information in HSIs. In this paper, we propose a novel deep subspace clustering method that extracts spatial–spectral features via contrastive learning. First, we ... ...

Abstract	Hyperspectral image (HSI) clustering is a major challenge due to the redundant spectral information in HSIs. In this paper, we propose a novel deep subspace clustering method that extracts spatial–spectral features via contrastive learning. First, we construct positive and negative sample pairs through data augmentation. Then, the data pairs are projected into feature space using a CNN model. Contrastive learning is conducted by minimizing the distances of positive pairs and maximizing those of negative pairs. Finally, based on their features, spectral clustering is employed to obtain the final result. Experimental results gained over three HSI datasets demonstrate that our proposed method is superior to other state-of-the-art methods.
Keywords	hyperspectral image clustering ; deep subspace clustering ; deep learning ; spectral clustering ; Science ; Q
Language	English
Publishing date	2021-11-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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