Epidemic Model based Security Analysis of Firefly Clock Synchronization in Wireless Sensor Networks

Zhiling Tang,Simin Li 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.6

This paper discusses the security of the clock synchronization algorithm based on the biological example of Asian Fireflies in wireless sensor networks. Huge swarms of these fireflies use the principle of pulse coupled oscillators in order to synchronously emit light flashes to attract mating partners. When applying this algorithm to real sensor networks, the potential threat of hostile flashes may disturb this synchronization. An improved Reachback Firefly Algorithm is implemented in the MAC layer of wireless sensor networks (WSNs), which change coupling strength among oscillators to anti hostile attack in clock synchronization. Its security is analyzed through a Susceptible-Infective-Recovered epidemic model. Numerical results and simulations are provided for further understanding of the analysis.

Reasoning on Constrained Epistemic Action Modal Logic

Zhiling Hong 보안공학연구지원센터 2015 International Journal of Hybrid Information Techno Vol.8 No.11

This paper put forward constrained epistemic action model logic (EAML), which extended the action modal logic and reason epistemic default logic in the dynamic epistemic theory framework. In this paper, the constrained epistemic default logic and action model logic was combined to model the dynamic cognitive update process by introducing a cognitive operator. As constrained epistemic default logic restricts the current possible epistemic state and action model logic can describe epistemic actions, the new proposed logic can better portray the cognitive operations and the restriction of the corresponding accessibility relations. The description of the logic framework was given in this study, and the related theorems were proved to show the interpretation of the constrained epistemic action model logic.

Perfection of the System of Party Inquiry in China

Zhiling Zhao 아시아사회과학학회 2023 Jornal of Asia Social Science Vol.10 No.3

The value of the parties' statements as independent evidence has not been fully utilized because China has not strictly distinguished the parties' statements in the sense of evidence for a long time, and the parties' inquiry system, which serves as the procedural scene for the parties' statements, lacks the rules and restrictions of procedural law, which not favors legislation to strip the parties' statements in the sense of evidence but also the judge's centered decision-making. The system of party inquiry in China has effectively been established by the Supreme People's Court's judicial interpretation, but due to the insufficient rules, there are still numerous issues that need to be resolved. At present, there are still some problems in China's party inquiry system, including unclear starting conditions, unique starting subject and weak probative force of party statements. In order to further discussing the improvement of party inquiry system, this article begins by defining the starting conditions of party inquiry, expanding the starting subject of party inquiry, and clarifying the probative force of party statements.

A novel surfactant, N,N-diethyl-N0-cyclohexylthiourea: Synthesis, flotation and adsorption on chalcopyrite

Zhiling He,Guangyi Liu,Xianglin Yang,Wei Liu 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.37 No.-

In this paper, a novel surfactant, N,N-diethyl-N0-cyclohexylthiourea (DECHTU) was synthesized and firstintroduced as a collector for chalcopyrite flotation. The micro-flotation results demonstratedchalcopyrite with adsorbed DECHTU exhibited good hydrophobicity and was effectively concentratedby nitrogen bubbles under pH 4–8. The adsorption of DECHTU onto chalcopyrite surfaces was fitted wellby the pseudo-second-order model and Langmuir isotherm, and was a spontaneously exothermicchemisorption process. The adsorption enthalpy change, entropy change and free energy change wereDH = 31.10 kJ mol 1, DS = 6.32 J mol 1 and DG (298 K) = 29.41 kJ mol 1, respectively. The activa-tion energy of the adsorption process was 17.39 kJ mol 1. The zeta potential results implied thatDECHTU adsorbed onto chalcopyrite surfaces as its anionic species with the release of H+ ion of NH–C(55S)–N group into aqueous solutions. The XPS spectra confirmed that there existed Cu(I)–DECHTUsurface complexes on chalcopyrite surface by bonding of copper atom with the sulfur atom of DECHTU,accompanying with the reduction of cupric to cuprous.

Actuator and sensor failure detection using direct approach

Li, Zhiling,Nagarajaiah, Satish Techno-Press 2014 Structural monitoring and maintenance Vol.1 No.2

A novel real-time actuator failure detection algorithm is developed in this paper. Actuator fails when the input to the structure is different from the commanded one. Previous research has shown that one error function can be formulated for each actuator through interaction matrix method. For output without noise, non-zero values in the actuator functions indicate the instant failure of the actuator regardless the working status of other actuators. In this paper, it is further demonstrated that the actuator's error function coefficients will be directly calculated from the healthy input of the examined actuator and all outputs. Hence, the need for structural information is no longer needed. This approach is termed as direct method. Experimental results from a NASA eight bay truss show the successful application of the direct method for isolating and identifying the real-time actuator failure. Further, it is shown that the developed method can be used for real-time sensor failure detection.

瑶族民间美术资源在幼儿园环境创设中的应用

牛志玲(Zhiling Niu),汤春丽(Chunli Tang),韦小静(Xiaojing Wei) YIXIN 출판사 2023 教育教学研究论丛 Vol.1 No.6

民间美术是民族文化的一个重要组成部分,具有悠久的历史和丰富的资源。本研究以金秀瑶族自治县A 幼儿园为例着重于探讨瑶族民间美术资源在幼儿园环境创设应用中存在的问题及优化策略。本文首先阐述了金秀瑶族民间美术资源在幼儿园环境设计中的应用现状,并指出了其中存在的问题,进而提出了一系列有效的优化策略。 Folk art is an important component of national culture, with a long history and abundant resources. This study takes Kindergarten A in Jinxiu Yao Autonomous County as an example to focus on exploring the problems and optimization strategies of Yao folk art resources in the application of kindergarten environment creation. This article first elaborates on the current application status of Jinxiu Yao folk art resources in kindergarten environmental design, points out the existing problems, and then proposes a series of effective optimization strategies.

WEBSITE PROPOSAL TO SHARE IDEAS FOR UPCYCLING DISPOSABLE PLASTIC BAGS

He zhiling,Gong duhui,Kim sehwa 한국디자인학회 2015 한국디자인학회 학술발표대회 논문집 Vol.2015 No.10

Influence of crosslinker amount on swelling and gel properties of hectorite/poly(acrylamide/itaconic acid) nanocomposite hydrogels

Tao Wan,Wenzhong Cheng,Zhiling Zhou,Min Xu,Chuzhang Zou,Ruixiang Li 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.7

A new hectorite/poly(acrylamide/itaconic acid) nanocomposite hydrogel was synthesized by inverse microemulsion polymerization. The effects of crosslinker amount on water absorbency and salt absorbency, swellability, pHsensitivity, gel strength, temperature-and shear-resistance were investigated. Water and salt absorbencies, pH-sensitivity and swellability decreased, while gel strength and temperature-and shear-resistance increased with increasing crosslinker amount. Nanocomposite hydrogels had good thermal stability with onset decomposing temperature of 252 oC. The as-synthesized hydrogel particles were regular and spherical-like and had an average particle size of 43 nm in the range of 30-65 nm. Hectorite clay platelets were exfoliated and transformed into amorphous structure.

Convention Industry in Beijing : an Engine to World City Formation

Zhou, Yan,Li, Zhiling 한국무역전시학회 2012 무역전시연구 Vol.7 No.1

Oxidative damage-induced hyperactive ribosome biogenesis participates in tumorigenesis of offspring by cross-interacting with the Wnt and TGF-β1 pathways in IVF embryos

Huang Yue,Li Zhiling,Lin En,He Pei,Ru Gaizhen 생화학분자생물학회 2021 Experimental and molecular medicine Vol.53 No.-

In vitro fertilization (IVF) increases the risk of tumorigenesis in offspring. The increased oxidative damage during IVF may be involved in tumor formation. However, the molecular mechanisms underlying this phenomenon remain largely unclear. Using a well-established model of oxidatively damaged IVF mouse embryos, we applied the iTRAQ method to identify proteins differentially expressed between control and oxidatively damaged zygotes and explored the possible tumorigenic mechanisms, especially with regard to the effects of oxidative damage on ribosome biogenesis closely related to tumorigenesis. The iTRAQ results revealed that ribosomal proteins were upregulated by oxidative stress through the Nucleolin/β-Catenin/n-Myc pathway, which stimulated ribosomes to synthesize an abundance of repair proteins to correct the damaged DNA/chromosomes in IVF-derived embryos. However, the increased percentages of γH2AX-positive cells and apoptotic cells in the blastocyst suggested that DNA repair was insufficient, resulting in aberrant ribosome biogenesis. Overexpression of ribosomal proteins, particularly Rpl15, which gradually increased from the 1-cell to 8-cell stages, indicated persistent hyperactivation of ribosome biogenesis, which promoted tumorigenesis in offspring derived from oxidatively damaged IVF embryos by selectively enhancing the translation of β-Catenin and TGF-β1. The antioxidant epigallocatechin-3-gallate (EGCG) was added to the in vitro culture medium to protect embryos from oxidative damage, and the expression of ribosome-/tumor-related proteins returned to normal after EGCG treatment. This study suggests that regulation of ribosome biogenesis by EGCG may be a means of preventing tumor formation in human IVF-derived offspring, providing a scientific basis for optimizing in vitro culture conditions and improving human-assisted reproductive technology.