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Previous Issue 2022 Vol. 44, No. 4 Archive Next Issue
Learning motivation is an important factor affecting students' learning emotion and classroom participation. Positive learning motivation is conducive to effective participation and deep learning. The relationship between constructivist classroom ...
In this study, a survey of 2 786 secondary school students was conducted by using a math learning engagement questionnaire, in order to identify math learning engagement profiles and examine their relations to student demographic characteristics(gend...
High quality mathematics learning engagement is an important goal of mathematics classroom instruction and a necessary process element to ensure students' mathematics achievement. Based on the data of 677 eighth grade students, the relationship betwe...
In order to explore the mutual relationship between mathematics learning engagement and intrinsic motivation of secondary school student, a questionnaire survey with mathematics learning engagement scale and intrinsic motivation scale was conducted f...
Alpine Rhododendron is a wild rhododendron resource growing in alpine area. The experiment of four kinds of heat resistant agents was carried out in the experimental bases located at 900 m and 500 m above sea level. By recording the changes of chloro...
Based on the identification of the number of base branches and 20 traits of vine tip in 10 leaf-vegetable sweetpotato varieties in 6 topping periods by differentiating with addition or subtraction symbolic label method, the variance variation, Person...
High-quality Panax notoginseng (P. notoginseng) is expensive and often sold in powder form. In order to quickly detect the adulterated components of P. notoginseng powder in the market, Fourier transform mid infrared spectroscopy...
The biological characteristics of Allantus luctifer (F. Smith) and its damage to buckwheat were determined to provide a scientific basis for its prediction and integrated management. In this paper, the morphological characteristics, dev...
To study the infection of porcine epidemic diarrhea virus (PEDV) on expression activity of sodium hydrogen exchanger 3 (NHE3) in Porcine intestine epithelial cells J2 (IPEC-J2), IPEC-J2 cells were infected with PEDV and cytopathic effect was observed...
The processing technology of spicy chicken was studied in this article by using frozen chicken breast as main raw material. The single factor test and orthogonal experiment, through shear force measurement, texture analysis and sensory evaluation, we...
Aiming at the problems of automatic transplanting vegetable seedlings in China, such as the complexity of seedling picking and throwing devices, a kind of seedling picking and throwing mechanism by stem clamping for plug seedlings was designed in thi...
At present, rubber tapping in natural rubber plantations in China is mainly manual, which is high labor intensity, low efficiency, and with harsh working environment. This study designed a fixed composite track type rubber tapping machine. Firstly, e...
Let G be a graph with order n. It is well known that two graphs G and H are chromatically equivalent if and only if their complementary graphs are adjoint equivalencet. It can be seen that adjoint polynomials are an effect...
Let f: V(G)∪E(G) [1, k] be a non-proper total k-coloring of G. Define a weight function about total coloring as φ(x)=f(x)+
In this paper, the authors firstly establish the definition of generalized Orlicz-Morrey spaces related to Dunkl setting. Secondly, by using the real-variable methods of harmonic analysis and the properties of Dunkl setting, the authors proved that f...
The definitions of G-strong shadowing property and Lipschitz shadowing property are given, and their dynamical properties are respectively studied in metric G-space and infinite product space. The results are as follows: For any positiv...
Agricultural total factor productivity is the source of agricultural economic growth. Popularizing agricultural insurance is an important way to improve agricultural total factor productivity. Only exploring the different effects of different levels ...
This paper explored the spatial distribution characteristics of various types of farmhouse resorts using the nearest neighbor index, coefficient of variation, kernel density, and other spatial analysis tools, based on the samples of 3 463 farmhouse r...
On the basis of reviewing the literature, this paper constructed a relationship model of "nostalgia-loyalty" to explore the impact of different nostalgic emotions on tourists' loyalty during thevisiting in Sanxue Street historical and cultural blocks...
Study of spatial distribution characteristics of intangible agricultural heritages in the southwest China is conducive to giving play to the resource advantages of mountain agricultural culture and promoting the protection and activation of intang...
"The uses of images as historical evidence " is an important method in the study of new history. Through the control of the microscopic and authentic characteristics of historical images, the information not expressed in written materials can be c...
Increasing specific surface area and active sites is an important way to improve the catalytic performance of transition metal sulfide. In this paper, Co9S8 (CSA) aerogel has been prepared through sol-gel method, of which specif...
The kernel risk-sensitive loss (KRSL) is widely used as the cost function of adaptive filters to reduce the influence of non-Gaussian noises on system performance owing to its high convexity. In this paper, a generalized kernel risk-sensitive loss (G...
Queueing problems can be seen everywhere. How to effectively monitor queueing congestion and rationally allocate resources have important theoretical and practical values. The study of dynamic queues with time-varying arrival rates has become popular...
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ISSN 1673-9868
CN 50-1189/N
Code: 78-166
Price: 20
- 1An Empirical Study on the Acceptance Intention of Fresh Agricultural Products Consumers in Omni-channel Retailing——Based on TAM and VAM Model
- 2Characteristics and Influencing Factors of Urban Bird Diversity in China
- 3Analysis of the Current Situation and Development Trend of China's Prepared Vegetable Processing and Its Packaging Technology
- 4The Relationship Between Psychological Suzhi and Prosocial Behaviors of College Students: the Serial Mediating Effect of Perceived Social Support and Gratitude
- 5Detection of Specific SARS-CoV-2 IgM and IgG Antibodies in COVID-19 and Its Clinical Application
- More+
- 1Detection of Specific SARS-CoV-2 IgM and IgG Antibodies in COVID-19 and Its Clinical Application
- 2Retrospective Epidemiological Analysis of 223 Cases of Novel Coronavirus Pneumonia in Chongqing
- 3The Mechanism of Effect of Potential Tourists' Risk Tolerance on Travel Intention Under Major Epidemic Situation —Based on the Antecedent Effect of Place Image in Music Video and the Moderating Effect of Familiarity
- 4Research Progress on the Nutritional Components of Wild Rice (Zizania spp.) and Its Processing and Utilization
- 5A Conditional Process Model of Public Negative Emotions and Mental Health Under the COVID-19: the Moderating Role of Interpersonal Alienation
- More+