Insect-Proof Nets Affect Paddy Field Microclimate Parameters and Grain Quality of Different Japonica Rice Varieties

Zhi Guo,Hongjiang Liu,Jianchu Zheng,Liugen Chen,Haiyan Yuan 한국작물학회 2015 Journal of crop science and biotechnology Vol.18 No.2

Insect-proof nets (IPN) are widely used to protect crops from invertebrate pests. The effects of IPN on the main microclimate parameters of paddy fields, as well as grain quality, were investigated for three japonica Oryza sativa L. varieties (Nanjing 44, Nanjing 45, and Suxiangjing 3) that are widely grown in China. The environmental temperature of IPN-treated fields increased slightly, whereas the maximum value of photosynthetically active radiation (PAR), daily cumulative PAR, and daily cumulative global radiation all decreased. However, the ratio of PAR to global radiation increased significantly, from 15.08 to 45.48%. Compared to the no insect-proof net (NIPN) treatment, the head rice percentage increased significantly for all three varieties; however, the chalky grain percentage, area and degree, and the amylose content all decreased significantly. The response of gel consistency, protein concentration, and the main parameters of the rapid visco analyzer (RVA) profile of rice starch to IPN treatment differed between varieties. The peak viscosity and breakdown were increased compared to the NIPN treatment, whereas the final viscosity and setback were decreased. However, no significant differences were found between the IPN and NIPN treatments. Furthermore, statistical analysis indicated no interaction between rice planting pattern (RPP) and rice variety (RV) for the rice grain quality parameters. These results suggest that IPN treatment improved rice grain quality for all japonica rice varieties studied, possibly due to the slight increase in environmental temperature and increased ratio of PAR to global radiation in IPN treated paddy fields.

作为政治秩序原理的正义与仁义 : 亚里士多德与孟子之间的一种互诠

陈治国 ( Chen¸ Zhi-guo ) 한국유교학회 2014 유교사상문화연구 Vol.56 No.-

“正义”和“仁义”在亚里士多德和孟子那里分别构成了优秀政治社会秩序的基本原理, 同时也被看作政治共同体成员所应培养的与他人相关的总体德性或伦理德性整体。这在某种程度上表明, 两位哲学家都把城邦政治的首要功能限定于主要促进每一个体伦理德性的实现或发展以及优秀公民人格的培养, 因为这更多地涉及一个人类存在者的本性和福祉。不过, 在伦理德性的形成路径上, 亚里士多德主张要由伦理德性公民的、政治的向度推进到人性向度、道德向度, 孟子则更倾向于一种相反的培养程序。并且, 二者虽然都为哲学家或者圣贤在正义城邦或仁义之治发展中的恰当角色提供了两种选项, 即政治顾问和伦理教师, 但是, 真正支撑着这两种角色的深层理由并不完全一致。 “Justice” in Aristotle and “benevolence and appropriateness” (renyi) in Mencius are individually conceived as the primary principle of an excellent social-political order in their ethical and political thought. In a sense, this shows that, both philosophers mainly define primary function of the politics of city or state as promoting the actualization or development of personal ethical virtue and the cultivation of excellent citizens. At the same time, Each of these two concepts is regarded as the whole of virtues with relation to others or the totally ethical virtues which should be cultivated by all the members of one political community. As the shaping path of ethical virtue is concerned, Aristotle holds that, we should attain the good character by advancing to human and moral dimension from civil and political one, but Mencius seems to give the priority to the former than the latter. Besides, both thinkers provide two roles, which are political consultant and ethical teacher, for philosophers or sages in the development of just city or government of benevolence and appropriateness, however, profound reasons that sustain these roles are not very consistent.

A Comprehensive Evaluation of Heat Tolerance in Nine Cultivars of Marigold

Zhiguo Tian,양얀,왕페이 한국원예학회 2015 Horticulture, Environment, and Biotechnology Vol.56 No.6

This study investigated semi-lethal temperature (LT50), heat injury index (HII) and 16 physiological indexes closely related to heat stress to evaluate heat tolerance of nine marigold (Tagetes erecta and T. patula) cultivars placed at 38/21°C day/night temperatures for 4 d. The methods of principal component analysis (PCA) and subordinate function (SF) were used for comprehensive evaluation of heat tolerance of the cultivars. The decrease in LT50 of nine cultivars varied from 37.42°C to 44.15°C. HII and the 16 physiological indexes from different cultivars showed significant differences under heat stress. Furthermore, four principal components could account for 88.35% of the total variance of the data. Based on the values for comprehensive evaluation via the subordinate function (D value), the heat tolerance of nine cultivars decreased in the order of ‘Giant’, ‘Gate Gold’, ‘Chokdee’, ‘Discovery’, ‘Janie’, ‘Bonanza’, ‘Little Hero’, ‘Great Hero’, and ‘Durango’. In addition, there was significant positive correlation between the LT50 and D value. According to the LT50 and HII with D value of the nine cultivars, ‘Giant’, ‘Gate Gold’ and ‘Chokdee’ were ranked as the most tolerant to heat. These cultivars are therefore recommended for ornamental landscapes that experience high temperatures in the growth season.

Calculation Modeling of Tourism Ecological Efficiency Based on Carbon Footprint in Shanxi, China

Zhiguo Li,심재연 사단법인 한국융합기술연구학회 2023 아시아태평양융합연구교류논문지 Vol.9 No.9

Tourism is a typical energy-intensive industry. It is imperative to formulate and implement carbon reduction strategies in Shanxi, China. The Tourism Carbon Footprint and Tourism Ecological Efficiency is the key to ensuring ecotourism’s healthy development. Through data query, model calculation, and panel data analysis, this study uses tourism revenue as an economic indicator and tourism carbon footprint as an environmental indicator to construct a Calculation Modeling for tourism ecological efficiency in Shanxi Province for the period of 2000-2020, totaling 21 years. Based on the results, it is concluded that the average proportion of tourism transportation carbon footprint in Shanxi Province indicates an absolute advantage. The total tourism revenue in 2020 in Shanxi Province shows a sharp decline, greatly affected by COVID-19. Tourism transportation and activity revenues have a higher proportion. The average proportions of tourism dining and accommodation revenue display an increasing trend yearly, while the proportion of tourism activity revenue shows a decreasing trend. Both the overall tourism ecological efficiency and the ecological efficiency of each sector have been increasing yearly, with higher growth rates observed in tourism dining and accommodation ecological efficiency. The aim is to provide a theoretical basis and form a complete model for measuring tourism Ecological Efficiency for Shanxi, China.

Non-fragile Robust Finite-time H∞ Control for Nonlinear Stochastic Itô Systems Using Neural Network

Zhiguo Yan,Guoshan Zhang,Jiankui Wang 제어·로봇·시스템학회 2012 International Journal of Control, Automation, and Vol.10 No.5

This paper deals with the problem of non-fragile robust finite-time H∞ control for a class of uncertain nonlinear stochastic Itô systems via neural network. First, applying multi-layer feedback neural networks, the nonlinearity is approximated by linear differential inclusion (LDI) under state-space representation. Then, a sufficient condition is proposed for the existence of non-fragile state feedback finite-time H∞ controller in terms of matrix inequalities. Furthermore, the problem of non-fragile robust finite-time H∞ control is reduced to the optimization problem involving linear matrix inequalities (LMIs), and the detailed solving algorithm is given for the restricted LMIs. Finally, an example is given to illustrate the effectiveness of the proposed method.

Assessment Method of Slope Excavation Quality based on Point Cloud Data

Zhiguo Pan,Yihong Zhou,Chunju Zhao,Chao Hu,Huawei Zhou,Yong Fan 대한토목학회 2019 KSCE JOURNAL OF CIVIL ENGINEERING Vol.23 No.3

Slope excavation quality assessment is essential in water conservancy engineering. This study presents a quality assessment method to estimate the excavation quality of a slope based on point cloud data obtained from a 3D Terrestrial Laser Scanner (TLS). A data processing method, which includes coordinate registration, data partitioning, and noise removal, is proposed to organize raw data from the TLS and ensure accurate and available point cloud data of a slope surface. An excavation quality assessment method with seven indicators, namely, slope ratio, slope toe elevation, back break, volume of back break, remained semi-void rate, unevenness, and offset degree, is proposed to analyze the difference between a slope’s as-design excavation appearance and actual construction appearance. The as-design excavation appearance is expressed by the Building Information Modeling (BIM) model of a slope-excavation face, and it is a reference to assess the actual construction appearance. The slope excavation quality of a water conservancy project in southwest China is evaluated with the proposed method and the traditional method. The results demonstratethat the proposed method can estimate the slope excavation quality effectively, rapidly, and accuately, and can provide theoretical data support for subsequent work.

Analytical Prediction for Tunnel-Soil-Pile Interaction Mechanics based on Kerr Foundation Model

Zhiguo Zhang,Chengping Zhang,Kangming Jiang,Zhiwei Wang,Yunjuan Jiang,Qihua Zhao,Minghao Lu 대한토목학회 2019 KSCE JOURNAL OF CIVIL ENGINEERING Vol.23 No.6

Existing analytical method to predict tunneling-induced pile deformation is generally based on the Winkler foundation model that neglects shear effects of soil, which is not sufficient for engineering practice. A simplified solution based on Kerr foundation model is presented in this study to investigate the tunnel-soil-pile interaction. In order to improve the accuracy of the prediction for tunneling-induced free-field movements, the cavity contraction theory is utilized in the first stage which received a higher accuracy than the previous solution. In the second stage, the soil free-field displacement is imposed on the existing pile, and the simplified solution for pile deformation governed by the disturbance of passive displacement is established based on the Kerr foundation model, which can take account of the soil shear effects. The applicability and accuracy of the simplified solution are then verified by several cases including the reported analytical solution, centrifuge modeling tests and observed data in situ. Good agreements are obtained in the comparative analyses, which demonstrates that the proposed solution can serve as an alternative approach for conservatively estimating tunneling-induced pile deformation in the preliminary design in clay. Furthermore, the parametric analysis associated with the pile deformation has also been performed. As a result, it is of primarily theoretical and practical significance to investigate the influence of soil shear effects on the tunnel-soil-pile interaction mechanics.

A Comparative Study on Korean and Chinese Gaming Terminology

( Zhiguo Wang ) 경남대학교 인문과학연구소 2020 人文論叢 Vol.51 No.-

Korea and China share cultural commonalities, but at the same time they also have many differences in language use. Within the context of gaming culture, the two countries’ shared characteristics encompass an enjoyment of participation in the gaming community, while using different and distinct gaming terminology. This research first examines the terminology used in the gaming cultures of Korea and China, as well as the criteria for language creation and characteristics of terminology generation in the two countries. Finally, it analyzes the similarities and differences in Korean and Chinese gamers’ attitudes toward the common culture between the two countries.

Synthesis and color-tunable luminescence properties of novel calcium aluminate silicate chloride phosphors

Zhiguo Xia,Peng Du,Libing Liao,Guowu Li,Shuai Jin 한국물리학회 2010 Current Applied Physics Vol.10 No.4

Eu2+ and Mn2+ co-doped calcium aluminate silicate chloride phosphors with the chemical composition of Ca3Al2Si2O8Cl4:Eu2+, Mn2+ have been prepared by a solid-state method, and their luminescence properties have been investigated by tuning the En2+/Mn2+ ions concentration. The phase formation and microstructure of Ca3Al2Si2O8Cl4:Eu2+, Mn2+ phosphors have been illuminated by XRD and SEM analysis. Photoluminescence (PL) spectrum reveals that Ca3Al2Si2O8Cl4:Eu2+ exhibits a strong blue emission band centered at 431 nm, while Ca3Al2Si2O8Cl4:Eu2+, Mn2+ can emit bluish-white light by adjusting the Mn2+ content appropriately. The energy transfer mechanism involving Eu2+–Mn2+ have also been investigated.

DYNAMIC MODELING OF BRAKE IN POWER-SPLIT DHT AND PRESSURE TRACKING CONTROL WITH SLIDING MODE VARIABLE STRUCTURE METHOD

Zhiguo Zhao,Mengna Li,Chen Wang,Lanxing Jiang,Maoyao Wang 한국자동차공학회 2019 International journal of automotive technology Vol.20 No.3

Since the mode transition performance of power-split DHT (Dedicated Hybrid Transmission) are directly influenced by torque dynamic characteristic of the brake, the brake pressure should be controlled accurately. In this paper, a dynamic model of brake and its pressure regulating system are established by considering system nonlinear characteristics and input disturbances, and a sliding mode variable structure controller is developed to track the brake pressure. First, the operation principle of DHT's pressure regulating system is introduced. Second, the dynamic models of solenoid proportional pressure valve, electromagnetic direction switching valve and brake are established with AMESim parametric plant model. Furthermore, a sliding mode variable structure controller for tracking pressure is designed based on MATLAB/Simulink. Finally, the AMESim parametric plant model is validated by measurements, and the proposed controller are verified by AMESim and Simulink co-simulation. The results show that the system dynamics can be well characterized by the AMESim parametric plant model. The target pressure can be tracked rapidly and accurately by using sliding mode variable structure controller and the controller has better robustness.