Guo Jian-ying

Changchun University of Chinese Medicine

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Zhaoxin Tang

South China Agricultural University

Wan FangHao

Chinese Academy of Sciences

Jinrong Li

Ministry of Water Resources of the People's Republic of China

Guotong Xie

Ping An (China)

Fanghao Wan

Chinese Academy of Agricultural Sciences

Tiejun Liu

Harbin Institute of Technology

Tianqi Zhao

China Institute of Water Resources and Hydropower Research

Pan Jiaqiang

Zhaotong University

Naijing Lu

Inner Mongolia Agricultural University

Wan Fanghao

Southerners on New Ground

Cooperative Institutions

Chinese Academy of Sciences

University of Chinese Academy of Sciences

Ministry of Agriculture and Rural Affairs

Inner Mongolia Agricultural University

Harbin University of Science and Technology

South China Agricultural University

Peking University

Sichuan University

Sun Yat-sen University

Air Force Medical University

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Automatic Numerical Servo Control for Electric Discharge Gap

Manufacturing Technology & Machine Tool (2003)

Guo Jian-ying

The meaning of automatic servo control for discharge gap in EDM (electric discharge machining) is discussed and realization of computer numerical control is propounded. The control circuit and software flow chart for servo control is also presented.

Flow chart

Realization (probability)

Electrical Discharge Machining

Automatic control

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Multi-scenario simulation can contribute to identify priorities for regional ecological corridors conservation

Ecological Indicators (2024)

Hui Dang Yihe Lü Guo Jian-ying Xing Wu

Ecological corridors, as a key component of ecological networks (EN), can strengthen linkages between ecological sources and effectively prevent further fragmentation and loss of regional habitats. Understanding the structure of ecological corridors and exploring their resilience in different scenarios can facilitate the understanding on the flows of energy and materials between ecological sources that can contribute to landscape conservation and restoration. In this study, the agro-pastoral ecotone of the North Yinshan Mountain was used as an example to conduct the landscape EN analysis with corridors as the focus. Random attack, overgrazing and urban sprawl, incremental optimization, and arterial corridors conservation scenarios were constructed. Network cascade failure simulations are introduced to explore the stability of EN under four scenarios. Among them, 12 new ecological corridors were optimized at 9 nodes, and 158 arterial corridors connected the 159 ecological sources to form the backbone of the EN. Both the arterial corridors conservation scheme and the optimization scheme of additional edges play important roles in maintaining the resilience of the EN. This provides scientific decisions for the categorization and conservation of ecological corridors to ensure the ecological integrity of functional landscapes.

10.1016/j.ecolind.2024.112166

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Four-dimensional hyperchaotic system and application research in signal encryption

Dianji yu kongzhi xuebao (2012)

Guo Jian-ying

In order to obtain complex chaotic signal source,a four-dimensional(4-D) hyperchaotic system was constructed,and a new signal encryption algorithm based on the 4-D system was also proposed.A system model was established,and the model was investigated via Lyapunov Exponent,phase-path of the system,realization circuit and phase-path of the circuit.According to chaotic hiding,and also to realize signal encryption,the 4-D system was selected as a signal source of chaotic encryption communication,then question encrypted signals were added to chaotic source signals,finally the password was set by means of combining application of iteration times and arithmetic operation of chaotic signals.The simulation results show that a perfect agreement between phase-paths of the system and phase-paths of realization circuit,thus the designed system is a 4-D hyperchaotic system,and the signal encryption technique based on four-dimensional hyperchaotic system is effective and practical,which provids a new method for informational encryption.

SIGNAL (programming language)

Realization (probability)

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Mowing increased community stability in semiarid grasslands more than either fencing or grazing

Ecological Applications (2024)

Tianqi Zhao Rongzhen Suo Aklilu W. Alemu Jiahua Zheng Feng Zhang

A substantial body of empirical evidence suggests that anthropogenic disturbance can affect the structure and function of grassland ecosystems. Despite this, few studies have elucidated the mechanisms through which grazing and mowing, the two most widespread land management practices, affect the stability of natural grassland communities. In this study, we draw upon 9 years of field data from natural grasslands in northern China to investigate the effects of gazing and mowing on community stability, specifically focusing on community aboveground net primary productivity (ANPP) and dominance, which are two major biodiversity mechanisms known to characterize community fluctuations. We found that both grazing and mowing reduced ANPP in comparison to areas enclosed by fencing. Grazing reduced community stability by increasing the likelihood of single-species dominance and decreasing the relative proportion of nondominant species. In contrast, mowing reduced the productivity of the dominant species but increased the productivity of nondominant species. As a consequence, mowing improved the overall community stability by increasing the stability of nondominant species. Our study provides novel insight into understanding of the relationship between community species fluctuation-stability, with implications for ecological research and ecosystem management in natural grasslands.

Fencing

Dominance (genetics)

Ecological stability

10.1002/eap.2985

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ALeRT-COVID: Attentive Lockdown-awaRe Transfer Learning for Predicting COVID-19 Pandemics in Different Countries

Journal of Healthcare Informatics Research (2021)

Yingxue Li Wenxiao Jia Junmei Wang Guo Jian-ying Qin Liu

Transfer of learning

Pandemic

2019-20 coronavirus outbreak

10.1007/s41666-020-00088-y

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Citations (18)

Effects of different levels of copper methionine on immune organs development and pathological changes in broiler.

Zhongguo shouyi xuebao (2009)

Rongsheng Su Cao HuaBin He‐Ping Li Guo Jian-ying Pan Jiaqiang

The effect of high copper methionine supplementation on development,copper content and pathological changes of immune organs in broiler was systematically investigated in this study.In the experiment,one hundred and twenty health AA broiler,one day-old,were divided into four groups randomly,which were control group(Cu 11 mg/kg)and three experimental groups(110,220 and 330 mg/kg as copper methionine),all of the experimental broilers were fed with corn-soybean meal for 60 days.Six broilers were randomly slaughtered in each group for weight index of immune organs on day 36,pathological changes were observed and copper concentrations in immune organs were measured on day 60.The results showed that the aliets supplemented with 110-330 mg/kg copper methionine decreased weight index at different extent,increased copper concentrations extremely and no obvious pathological changes were observed in immune organs.The results indicated that copper content of immune organs tended to increase with the increase of diets copper supplement and there were no obvious pathological lesions of immune organs in broilers when the level of copper methionine was 330 mg/kg.

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Winter Sand-dust Flux over Different Underlying Surfaces in the Ulan Buh Desert

Zhongguo Shamo (2016)

Chen Xinchuang Dong Zhi Jinrong Li Hongli Li Guo Jian-ying

Desert (philosophy)

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Effect of Shallow tillage during different season on grassland vegetation and soil in the Xilamuren region of North Yin Mountains

Caoye kexue (2012)

Guo Jian-ying

An experiment was conducted to investigate the effect of spring and summer shallow tillage on grassland vegetation and soil in the Xilamuren region of North Yin Mountains to find the optimal technology for restoration of degraded grassland.This study showed the spring shallow tillage resulted in severe wind erosion and soil roughness and the summer shallow tillage did not cause wind erosion and soil roughness.The vegetation treated by the spring shallow tillage was sparse because many seedlings and rootstalk were dead or blew by wind,where annual herbs,such as Salsols collina,Corispermum declinatum,Chenopodum aristatum,Artimisia annua became dominant with cover of 30%;however,the vegetation cover treated by the summer shallow tillage was 62% because the Leymus chinensis grew rapidly after several rain and its important value was 0.7.At the end of growth season,the litters cover of grassland treated by the spring shallow tillage was below 10%,and the soil organic matter decreased by 33%;while the litters cover of grassland treated by the summer shallow tillage was 30%,and the soil organic matter increased by 8%.In spring of 2011,the recovery-green of the spring shallow tillage was worse than that of the summer shallow tillage.This study suggested that the summer shallow tillage was better than spring shallow tillage.

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Availability optimization design of series-parallel system

Guo Jian-ying

In view of the system availability optimization under several restrictions in many projects,according to the basic theory of the reliability and maintainability,based on the study of the typical series-system,bring forward a new method of optimizing the system availability.Introduce Markov process,consider the state transfer of the repairable system,and establish availability optimization model;use the comprehensive search capability and robustness of the genetic algorithms(GA),to resolve the system availability optimization problem in a number of constraints(cost,quality).The special calculation shows that the method is able to optimize the distribution of a variety of constraints,make the system to achieve the max optimum availability,and reduce the frequency of system failures later,as a result,giving a new valid method to design the system in projects.

Maintainability

Robustness

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The analysis on the expression of gasotransmitters in early trauma patients

Revista da Associação Médica Brasileira (2017)

Zhiyong Wang Mignxing Fang Guo Jian-ying Yong Yang Fengjun Tian

Nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H2S) were endogenously-generated molecules gas. They owned important biological activity and participated in many pathophysiological processes. This study aimed to examine the levels of three gasotransmitters in the early phase of trauma patients.Blood samples were collected from 60 trauma patients and ten healthy volunteers. Concentration of serum iNOS and HO-1 were analyzed by enzyme linked immunosorbent assay and plasma H2S was determined by colorimetric method. Meanwhile, the occurrence of multiple organ dysfunction syndrome (MODS) was also monitored.The levels of iNOS, HO-1 and endogenous H2S in the patients group were significantly different from the healthy control group, and the difference was more obvious with the increase of ISS score. iNOS levels were positively correlated with ISS scores and blood lactic acid values, and HO-1 and endogenous H2S were negatively correlated with ISS scores and blood lactic acid values. Of 60 trauma patients, eight (13.33%) developed MODS. The level of iNOS in the MODS group was higher than that in non-MODS group, while HO-1 and H2S were significant lower in the MODS group.The three gasotransmitters participated in systemic inflammatory responses during early trauma and could be used as important indicators for trauma severity. Their measurements were meaningful for evaluating the severity and prognosis of trauma.

Expression (computer science)

10.1590/1806-9282.63.11.988

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Citations (1)