The Manifestations, Causes, Impacts and Across Paths of Pan-Securitization

Zong Wei(Wei Zong),He Haiyang(Haiyang He) 아시아사회과학학회 2023 Jornal of Asia Social Science Vol.10 No.2

In recent years, with the decline of globalization, the rise of nationalism in the US and Western countries has become more prominent. They have adopted conservative policies under the pretext of national security, leading to the proliferation of pan-securitization. Facing various and complex security challenges, countries have attached more importance to national security. Anyway, based on the Copenhagen School’s theory of securitization, the process of securitization can result in pansecuritization, which manifests in three aspects: the worship of securitization at the initiation stage; the excessive expansion of issues at the development stage; and the difficulty of de-securitization at the post-securitization stage. On the one hand, pansecuritization can cause problems such as security capital overdraft, radical change cultivation, lack of common security perception and human rights protection impairment within a country. On the other hand, it can also cause problems such as production efficiency reduction and security dilemma induction at the international level. The causes of pan-securitization are complex, but mainly stem from the interconnection of security threats, the monopoly of speech power by agents, the centralist political form and the endogenous defects of the Copenhagen School’s securitization theory. Today, guided by the overall national security concept, national security has received unprecedented attention. In view of the pan-securitization trap that the US and Western countries have fallen into, we should take measures from three aspects: security democratization, security legalization and de-worship of securitization to avoid repeating their mistakes. Only in this way can we enhance the effectiveness of issue securitization and improve the implementation efficiency of security policies.

Surface-functionalized Hexagonal Mesoporous Silica Supported 5-(4-Carboxyphenyl)-10,15,20-triphenyl Porphyrin Manganese(III) Chloride and Their Catalytic Activity

Wei-jie Zhang,Pingping Jiang,Ping-bo Zhang,Jia-wei Zheng,Haiyang Li 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.12

Manganese(III) 5-(4-carboxyphenyl)-10,15,20-triphenyl porphyrin chloride (Mn(TCPP)Cl) was grafted through amide bond on silica zeolite Y (HY), zeolite beta (Hβ) and hexagonal mesoporous silica (HMS). XRD, ICP-AES, N2 physisorption, SEM, TEM, FTIR and thermal analysis were employed to analyse these novel heterogeneous materials. These silica supported catalysts were shown to be used for epoxidation and good shape selectivity was observed. The effect of support structure on catalytic performance was also discussed. The catalytic activity remained when the catalysts were recycled five times. The energy changes about epoxidation of alkenes by NaIO4 and H2O2 were also computationally calculated to explain the different catalytic efficiency.

Simulation Study on Removal Mechanism of Si3N4 Ceramic in Rotary Ultrasonic Grinding

Shiliang Wei,Tao Zhang,Hengju Wei,Wei Wang,Haiyang Wang,Youdi Liu 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.6

Hot-pressed Si3N4 ceramic is a kind of high-performance ceramic material, which is widely used in national defense, aerospace, and other professional fields. Aiming at the problem of poor surface quality of Si3N4 ceramic material, the paper carried out a simulation study on the removal mechanism of Si3N4 ceramic by rotary ultrasonic grinding. The study provides a theoretical basis for improving the surface quality and processing efficiency of hot-pressed Si3N4 ceramics. Combined with dynamic simulation software to complete single abrasive and double abrasive rotary ultrasonic grinding simulation. Material removal and surface crack propagation in single and double abrasive grains rotary ultrasonic grinding of Si3N4 ceramic were analyzed by crack propagation theory. The grinding force of Si3N4 ceramics with different ultrasonic amplitude and grinding depth and the local stress change at the time of crack generation with different ultrasonic amplitude were compared and analyzed. Complete single abrasive and double abrasive rotary ultrasonic scratch test. The grinding force and surface crack generation obtained by rotary ultrasonic scratch test and rotary ultrasonic grinding simulation were analyzed. The maximum error of the simulation results of single-grain and double-grain rotary ultrasonic grinding is 12.8% and 14.7% respectively. The surface crack of the scratch test workpiece is consistent with the simulation results.

Surface-functionalized Hexagonal Mesoporous Silica Supported 5-(4-Carboxyphenyl)-10,15,20-triphenyl Porphyrin Manganese(III) Chloride and Their Catalytic Activity

Zhang, Wei-Jie,Jiang, Ping-Ping,Zhang, Ping-Bo,Zheng, Jia-Wei,Li, Haiyang Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.12

Manganese(III) 5-(4-carboxyphenyl)-10,15,20-triphenyl porphyrin chloride (Mn(TCPP)Cl) was grafted through amide bond on silica zeolite Y (HY), zeolite beta ($H{\beta}$) and hexagonal mesoporous silica (HMS). XRD, ICP-AES, $N_2$ physisorption, SEM, TEM, FTIR and thermal analysis were employed to analyse these novel heterogeneous materials. These silica supported catalysts were shown to be used for epoxidation and good shape selectivity was observed. The effect of support structure on catalytic performance was also discussed. The catalytic activity remained when the catalysts were recycled five times. The energy changes about epoxidation of alkenes by $NaIO_4$ and $H_2O_2$ were also computationally calculated to explain the different catalytic efficiency.

ENHANCED-MOBILITY ORGANIC FIELD-EFFECT TRANSISTORS FABRICATED UNDER SOLVENT VAPOR ATMOSPHERE

HAIYANG GUI,ZONGPENG ZHU,Bin Wei,Jun Wang 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2014 NANO Vol.9 No.4

Solvent vapor atmosphere is introduced for solution-evaporated poly(3-hexylthiophene) (P3HT)formation in fabricating organic ¯eld-e®ect transistors (OFETs). As changing the solvent vaporatmosphere, prominent in°uences on the assemblies of P3HT nanowires during solidi¯cation wererepresented, leading to the di®erence in nanostructure morphologies. We demonstrated that thedevice fabricated under anisole solvent vapor atmosphere is superior in electrical performance tothat of the devices fabricated under other conditions. In this process, anisole solvent vaporatmosphere transparently facilitated one-dimensional (1D) self-assembly through ?–? stackinginteraction among the P3HT units during solidi¯cation.

Generalized Beamforming Design for Cooperative MIMO Multirelay Networks with Infinite Constraints and Imperfect CSI

Yu, Haiyang,Duan, Wei,Sun, Qiang,Wang, Xia,Wang, Jue,Li, Jun,Choi, Jaeho Hindawi Limited 2018 Mathematical problems in engineering Vol.2018 No.-

<P>A generalized base station-relay-user equipment (BS-Relay-UE) beamforming design is investigated for a cooperative multiple-input multiple-output (MIMO) multirelay networks with imperfect channel state information (CSI). In order to minimize the worst-case mean square error (MSE) which is subject to a semi-infinite (SI) relay power constraints, a generalized optimal beamforming structure for the relay amplifying matrix is effectively proposed, and then the SI relay power constraints are converted into linear matrix inequalities (LMIs) version. In such conversion, the objective problem recasts as a decoupled biconvex semidefinite programming (SDP) one which can be efficiently solved by the proposed alternating algorithm. The system performance has been verified in terms of worst-case MSE using a set of qualitative analyses. The results show us that the proposed beamforming method outperforms the conventional schemes and can also effectively reduce the computational complexity when it is compared to the cutting-set schemes and also to the nonrobust ones.</P>

Efficacy and Safety of a Steroid-Free Immunosuppressive Regimen after Liver Transplantation for Hepatocellular Carcinoma

Qiang Wei,Xiao Xu,Chao Wang,Runzhou Zhuang,Li Zhuang,Lin Zhou,Haiyang Xie,Jian Wu,Min Zhang,Yan Shen,Weilin Wang,Shusen Zheng 거트앤리버 소화기연관학회협의회 2016 Gut and Liver Vol.10 No.4

Background/Aims: We aimed to evaluate the efficacy and safety of an immunosuppressive regimen without steroids after liver transplantation (LT) for hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC). Methods: Sixty-six HCC patients who underwent an immunosuppressive regimen without steroids after LT were enrolled in the steroid-free group. The preoperative characteristics and postoperative outcomes of these patients were compared with those of 132 HCC recipients who were placed on an immunosuppressive regimen using steroids (steroid group). The incidence of acute rejection, HBV recurrence, infection, and new-onset diabetes mellitus and the overall and tumor-free survival rates were compared between the two groups. Results: Differences were not observed in the 1-year (83.3% vs 97.0%, p=0.067), 3-year (65.4% vs 75.8%, p=0.067) or 5-year (56.3% vs 70.7%, p=0.067) patient survival rates or in the 1-year (62.1% vs 72.7%, p=0.067), 3-year (49.8% vs 63.6%, p=0.067) or 5-year (48.6% vs 63.6%, p=0.067) tumor-free survival rates between the two groups, respectively. In the steroid-free group, the patients who fulfilled the Milan criteria had higher overall and tumor-free survival rates than those in the steroid group (p<0.001). The prevalence of HBV recurrence (3.0% vs 13.6%, p=0.02) was significantly lower in the steroid-free group compared with the steroid group. Conclusions: After LT, an immunosuppressive regimen without steroids could be a safe and feasible treatment for HBVrelated HCC patients, thus resulting in the reduction of HBV recurrence. Based on the observed survival rates, patients who fulfill the Milan criteria may derive benefits from steroidfree immunosuppression.

Enhanced beamforming design and sum-rate maximization for two-way multi-relay networks

Duan, Wei,Yan, Yier,Hai, Han,Jiang, Xueqin,Yu, Haiyang,Lee, Moon Ho SpringerOpen 2016 Eurasip Journal on Wireless Communications and Net Vol.2016 No.-

<P>In this paper, we investigate an enhanced relay beamforming design for two-way relay networks (TWRN). In order to reduce the computational complexity, we derive a sum of the inverse of the signal-to-noise ratio (SI-SNR) problem equivalent to the objective sum-rate (SR) problem. The SI-SNR problem can be reformulated as a simple optimization problem by using the Cholesky decomposition and Cauchy-Schwarz inequality, and solved by the interior-point method. The numerical results show that the proposed SI-SNR method can not only reduce the computational complexity but also have the same SR performance as that of the conventional works.</P>

The relationship between genetic polymorphisms in apolipoprotein E (ApoE) gene and osteonecrosis of the femoral head induced by steroid in Chinese Han population

Lin Yuan,Wei Li,Xianquan Wang,Guang Yang,Haiyang Yu,Shui Sun 한국유전학회 2018 Genes & Genomics Vol.40 No.2

Previous studies suggested that apolipoprotein E (ApoE) genetic polymorphisms (SNPs) may result in abnormal lipid metabolism. Therefore, genetic polymorphisms in ApoE may be associated with the occurrence of osteonecrosis of the femoral head (ONFH). A case control study was designed to include 580 patients with steroid-induced ONFH and 560 age- and sex-matched non steroid-induced ONFH control subjects to analyze the association between ApoE polymorphisms and susceptibility of steroid-induced ONFH. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method was utilized to differentiate two genotypes SNPs (rs7412 C/T and rs429358 T/C) in ApoE gene. Both rs7412 C/T and rs429358 T/C were found to be associated with the risk of steroid-induced ONFH. However, no significant association was observed between the haplotypes T-T, T-C and C-C in ONFH. Furthermore, T allele of rs7412 and C allele of rs429358 carriers were associated with higher levels of TG in steroid-induced ONFH patients (P < 0.05). The study suggested that ApoE genetic polymorphisms conferred susceptibility to steroid-induced ONFH in Chinese Han population. However, the results need further investigation with large sample size and various populations.

Removal of heat stable salts (HSS) from spent alkanolamine wastewater using electrodialysis

Yaoming Wang,Wei Li,Haiyang Yan,Tongwen Xu 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.57 No.-

The formation of heat stable salts (HSS) is a tough problem for aqueous alkanolamines solution in gasprocessing industry. In this study, a self-made electrodialysis stack was assembled to remove the HSSfrom spent amine wastewater. Results indicated that the optimum current density is 15 mA/cm2. Anincrease in pH is beneficial for amine recovery but is harmful to the lifespan of membranes. The EDprocess cost is estimated to be 14.6 $/t with the energy consumption of 39.4 kWh/T. Comparison with theconventional neutralization or replacement methods, ED is not only energy-saving but alsoenvironmentally friendly for the removal of HSS from the spent amine wastewater.