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Comparisons of bridges flutter derivatives and generalized ones

Fuyou XU , Zhe ZHANG , Cailiang HUANG , Airong CHEN ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 272-278 doi: 10.1007/s11709-009-0042-1

Abstract: The concept of “generalized flutter derivative” is proposed, and its physical meaning is

Keywords： bridge     flutter derivative     generalized flutter derivative     self-excited aerodynamic force     Sutong Bridge    

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Cyberspace Security Models and Systematic Development from Multiple Perspectives

Sun Shuai , Zhang Lei , Hu Chunhui , Fu Shouqing , Qing Yu , Cui Yong

Strategic Study of CAE 2023, Volume 25, Issue 6,   Pages 116-125 doi: 10.15302/J-SSCAE-2023.06.009

Abstract:

As cyberspace technologies advance rapidly, cyberspace security risks derived from new applications and technologies are becoming more complex and hidden. Establishing a unique cyberspace security model is a common practice to deal with complex security threats in China and abroad. However, existing cyberspace security models have problems such as unclear development directions, insufficient ability to analyze risks derived from new technologies, and lack of security capabilities required for cyberspace security defense assessment. This study evaluates existing cyberspace security models from the perspectives of technology, discipline, and industry, sorts out the characteristics and development context of the cyberspace security technology system, and clarifies the urgent problems existing in cybersecurity applications. Focusing on the perspective of cyberspace security technology, this study proposes a cyberspace security model system framework based on technical elements, using existing security technologies and emerging technologies to verify the security analysis capabilities of the system framework. This study further proposes the following development suggestions: (1) improving the core framework of the cyberspace security technology system, (2) promoting the industryuniversity-research integration in the field of cyberspace security, (3) promoting the formulation of core technology standards regarding cyberspace security, and (4) addressing AI security threats, thus to effectively deal with cyberspace security threats and enhance the cyberspace security capabilities of China.

Keywords： cyberspace     security model     security capability     derivative risk    

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Online recognition of drainage type based on UV-vis spectra and derivative neural network algorithm

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1430-6

Abstract:

• UV-vis absorption analyzer was applied in drainage type online recognition.

Keywords： Drainage online recognition     UV-vis spectra     Derivative spectrum     Convolutional neural network    

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A novel flavonol-based colorimetric and turn-on fluorescent probe for rapid determination of hydrazine in real water samples and its bioimaging and

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 24-33 doi: 10.1007/s11705-022-2171-1

Abstract: Hydrazine is extremely toxic and causes severe harm to human body. Herein, a novel fluorescent probe 4-oxo-2-styryl-4H-chromen-3-yl thiophene-2-carboxylate (FHT) was synthesized for detecting hydrazine by using natural cinnamaldehyde as starting material. This probe exhibited significantly enhanced fluorescence response towards hydrazine over various common metal ions, anions, and amine compounds. The detection limit of probe FHT for hydrazine was as low as 0.14 μmol·L–1, significantly lower than that of the threshold value of 0.312 μmol·L–1, imposed by the Environmental Protection Agency. Moreover, the proposed probe was able to detect hydrazine within wide pH (5–10) and linear detection ranges (0–110 μmol·L–1). This probe was employed for determining trace hydrazine in different environmental water samples. The probe FHT-loaded filter paper strips were able to conveniently detect hydrazine of low concentration through distinct naked-eye and fluorescent color changes. Importantly, the probe FHT with low cytotoxicity was successfully applied to visualize hydrazine in living Hela cells and zebrafish.

Keywords： cinnamaldehyde     3-hydroxychromone derivative     hydrazine     fluorescent probe    

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Understanding and addressing the environmental risk of microplastics

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 1, doi: 10.1007/s11783-023-1612-5

Abstract: Hence, great uncertainties might exist in microplastics exposure and health risk assessment based on

Keywords： Emerging contaminants     Microplastics     Environment risk     Health effect    

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Graphene-reinforced metal-organic frameworks derived cobalt sulfide/carbon nanocomposites as efficient multifunctional electrocatalysts

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1487-1499 doi: 10.1007/s11705-021-2085-3

Abstract: Developing cost-effective electrocatalysts for oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is vital in energy conversion and storage applications. Herein, we report a simple method for the synthesis of graphene-reinforced CoS/C nanocomposites and the evaluation of their electrocatalytic performance for typical electrocatalytic reactions. Nanocomposites of CoS embedded in N, S co-doped porous carbon and graphene (CoS@C/Graphene) were generated via simultaneous sulfurization and carbonization of one-pot synthesized graphite oxide-ZIF-67 precursors. The obtained CoS@C/Graphene nanocomposites were characterized by X-ray diffraction, Raman spectroscopy, thermogravimetric analysis-mass spectroscopy, scanning electronic microscopy, transmission electronic microscopy, X-ray photoelectron spectroscopy and gas sorption. It is found that CoS nanoparticles homogenously dispersed in the in situ formed N, S co-doped porous carbon/graphene matrix. The CoS@C/10Graphene composite not only shows excellent electrocatalytic activity toward ORR with high onset potential of 0.89 V, four-electron pathway and superior durability of maintaining 98% of current after continuously running for around 5 h, but also exhibits good performance for OER and HER, due to the improved electrical conductivity, increased catalytic active sites and connectivity between the electrocatalytic active CoS and the carbon matrix. This work offers a new approach for the development of novel multifunctional nanocomposites for the next generation of energy conversion and storage applications.

Keywords： MOF derivative     graphene     electrocatalyst     oxygen reduction reaction     oxygen evolution reaction     hydrogen    

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Synthesis of a cardanol-amine derivative using an ionic liquid catalyst

Atanu Biswas, Carlucio R. Alves, Maria T. S. Trevisan, Roseane L. E. da Silva, Roselayne F. Furtado, Zengshe Liu, H. N. Cheng

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3,   Pages 425-431 doi: 10.1007/s11705-016-1581-3

Abstract: In this work cardanol was first epoxidized, and a novel aniline derivative prepared from it under mild

Keywords： cardanol     epoxidation     aminohydrin     aniline     ionic liquid     aniline-formaldehyde    

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Ecological Risk Management of Drinking Water Project: The Case Study of Kunming City

Ji-liang Zheng,Jun Hu,Xuan Zhou,Ching Yuen Luk

Frontiers of Engineering Management 2015, Volume 2, Issue 3,   Pages 311-319 doi: 10.15302/J-FEM-2015045

Abstract: The ecological risk management of drinking water project is an important means of ensuring the safetyBased on ecological risk assessment and management theories, this paper establishes an ecological riskIts ecological risk management of drinking water has attracted the attention of both the local government

Keywords： drinking water project     ecological risk     ecological risk assessment     risk management    

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Risk Matrix Method and Its Application in the Field of Technical Project Risk Management

Zhu Qichao,Kuang Xinghua,Shen Yongping

Strategic Study of CAE 2003, Volume 5, Issue 1,   Pages 89-94

Abstract:

Technical project risk management has always been given great concern by the Department of DefenseThis paper systematically introduces risk matrix and its application, which is one of the most popularrisk management technologies in the field of DoD acquisition projects risk management.As a conclusion, this paper evaluates the usability of risk matrix when to be used to assess and mitigaterisk management.

Keywords： risk matrix     risk management     project management    

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Bioaerosol emissions variations in large-scale landfill region and their health risk impacts

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1593-9

Abstract:

● The airborne bacteria in landfills were 4–50 times higher than fungi.

Keywords： Microbial aerosols     Landfill sites     Health risk assessment     CALPUFF    

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Epidemic obesity in children and adolescents: risk factors and prevention

Eun Young Lee, Kun-Ho Yoon

Frontiers of Medicine 2018, Volume 12, Issue 6,   Pages 658-666 doi: 10.1007/s11684-018-0640-1

Abstract: The complexity of risk factors for developing obesity among children and adolescents leads to difficultythat of obesity, an effective prevention strategy is to focus on overweight youth, who are at high riskMultifaceted, comprehensive strategies involving behavioral, psychological, and environmental risk factors

Keywords： obesity     children     adolescents     epidemiology     risk factor     prevention    

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Optimal risk allocation in alliance infrastructure projects: A social preference perspective

Xiang DING, Qian LI

Frontiers of Engineering Management 2022, Volume 9, Issue 2,   Pages 326-336 doi: 10.1007/s42524-020-0145-x

Abstract: The mechanism of risk allocation is designed to protect all stakeholders, and it is vital to projectFew research has focused on partners’ social preferences affecting the output of risk allocation.risk-management effort simultaneously.Results show that an AM’s IA significantly affects risk allocation between AL and AM.preference negatively affects AL’s optimal risk-sharing ratio.

Keywords： public project     contract design     risk sharing     inequity aversion     governance    

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Detection of schedule delay risk of empirical construction projects

Tsegay GEBREHIWET, Hanbin LUO

Frontiers of Engineering Management 2018, Volume 5, Issue 2,   Pages 251-267 doi: 10.15302/J-FEM-2018086

Abstract: In Ethiopian construction projects, schedule delay risk is a predominant issue because it is not properlyAlthough several studies have been focused on the various effects of risk in construction projects, limitedefforts have been made to investigate the typical and the overall schedule delay risk.In this study, our aim is to detect the typical and overall schedule delay risk throughout the constructionthe exact risk level on specific activity to make appropriate decision.

Keywords： fuzzy analytic hierarchy process comprehensive evaluation     construction project     detection of delay risk    

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The influencing factors of the WTP for the risk reduction of chemical industry accidents in China

Lei HUANG, Zhijuan SHAO, Weiliang BAO, Bailing DUAN, Jun BI, Zengwei YUAN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 6,   Pages 860-868 doi: 10.1007/s11783-012-0467-y

Abstract: To explore the factors that influence respondents’ willingness to pay (WTP) for the risk reduction ofconsidered in this study, and a Tobit model was used to find the factors influencing WTP under three riskIn addition, three extracted public risk perception factors, , , and , also strongly affected theThe mean WTP value increased as the magnitude of the risk reduction increased.The cost for chemical safety management of Yancheng was calculated, and the optimized risk reduction

Keywords： risk perception     willingness to pay     contingent valuation method     risk management school of the environment    

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Hybrid deep learning model for risk prediction of fracture in patients with diabetes and osteoporosis

Frontiers of Medicine 2022, Volume 16, Issue 3,   Pages 496-506 doi: 10.1007/s11684-021-0828-7

Abstract: The fracture risk of patients with diabetes is higher than those of patients without diabetes due tohyperglycemia, usage of diabetes drugs, changes in insulin levels, and excretion, and this risk beginsIn addition, the fracture risk of patients with diabetes and osteoporosis has not been further studiedthis paper, a hybrid model combining XGBoost with deep neural network is used to predict the fracture riskdiabetes and osteoporosis, and investigate the effect of patients’ physiological factors on fracture risk

Keywords： XGBoost     deep neural network     healthcare     risk prediction    

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Title Author Date Type Operation

Comparisons of bridges flutter derivatives and generalized ones

Fuyou XU , Zhe ZHANG , Cailiang HUANG , Airong CHEN ,

Journal Article

Cyberspace Security Models and Systematic Development from Multiple Perspectives

Sun Shuai , Zhang Lei , Hu Chunhui , Fu Shouqing , Qing Yu , Cui Yong

Journal Article

Online recognition of drainage type based on UV-vis spectra and derivative neural network algorithm

Journal Article

A novel flavonol-based colorimetric and turn-on fluorescent probe for rapid determination of hydrazine in real water samples and its bioimaging and

Journal Article

Understanding and addressing the environmental risk of microplastics

Journal Article

Graphene-reinforced metal-organic frameworks derived cobalt sulfide/carbon nanocomposites as efficient multifunctional electrocatalysts

Journal Article

Synthesis of a cardanol-amine derivative using an ionic liquid catalyst

Atanu Biswas, Carlucio R. Alves, Maria T. S. Trevisan, Roseane L. E. da Silva, Roselayne F. Furtado, Zengshe Liu, H. N. Cheng

Journal Article

Ecological Risk Management of Drinking Water Project: The Case Study of Kunming City

Ji-liang Zheng,Jun Hu,Xuan Zhou,Ching Yuen Luk

Journal Article

Risk Matrix Method and Its Application in the Field of Technical Project Risk Management

Zhu Qichao,Kuang Xinghua,Shen Yongping

Journal Article

Bioaerosol emissions variations in large-scale landfill region and their health risk impacts

Journal Article

Epidemic obesity in children and adolescents: risk factors and prevention

Eun Young Lee, Kun-Ho Yoon

Journal Article

Optimal risk allocation in alliance infrastructure projects: A social preference perspective

Xiang DING, Qian LI

Journal Article

Detection of schedule delay risk of empirical construction projects

Tsegay GEBREHIWET, Hanbin LUO

Journal Article

The influencing factors of the WTP for the risk reduction of chemical industry accidents in China

Lei HUANG, Zhijuan SHAO, Weiliang BAO, Bailing DUAN, Jun BI, Zengwei YUAN

Journal Article

Hybrid deep learning model for risk prediction of fracture in patients with diabetes and osteoporosis

Journal Article