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γ-CENTRALIZERS AND GENERALIZED DERIVATIONS
Jiren Zhou 대한수학회 2010 대한수학회지 Vol.47 No.3
In this paper, we show that Jordan γ-centralizers and local γ-centralizers are γ-centralizers under certain conditions. We also discuss a new type of generalized derivations associated with Hochschild 2-cocycles and introduce a special local generalized derivation associated with Hochschild 2-cocycles. We prove that if L is a CDCSL and M is a dual normal unital Banach algL-bimodule, then every local generalized derivation of above type from algL into M is a generalized derivation.
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τ-CENTRALIZERS AND GENERALIZED DERIVATIONS
Zhou, Jiren Korean Mathematical Society 2010 대한수학회지 Vol.47 No.3
In this paper, we show that Jordan $\tau$-centralizers and local $\tau$-centralizers are $\tau$-centralizers under certain conditions. We also discuss a new type of generalized derivations associated with Hochschild 2-cocycles and introduce a special local generalized derivation associated with Hochschild 2-cocycles. We prove that if $\cal{L}$ is a CDCSL and $\cal{M}$ is a dual normal unital Banach $alg\cal{L}$-bimodule, then every local generalized derivation of above type from $alg\cal{L}$ into $\cal{M}$ is a generalized derivation.
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The Research on Fusion and Diagnosis Method of Multi Soft Fault of Nonlinear Analog Circuit
Haijun Lin,Jiren Han,Xuhui Zhang,Jingbo Xu,Yunfeng Liu 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.11
For the single source characteristics of the insufficient problem of nonlinear analog circuit soft fault diagnosis, we propose a new method that is based on dual Wiener core for fault diagnosis of intelligent information optimization fusion[1,2,3,4,5], firstly, the incentive is Gauss white noise, after sampling we obtain the Wiener core of circuit and power which is used from the discrete Wiener core, then use the improved genetic algorithm, make the feature selection and fusion combination as an optimization problem, propose intelligent optimization fusion extraction based on the improved genetic algorithm, the circuit set total Euclidean distance as the objective function optimizes, the different information in feature layer can be organic integration, then use the BP neural network for intelligent diagnosis. Experiments show that the method can effectively improve the accuracy of the diagnosis of nonlinear multiple soft faults.
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Yangkai Zhang,Yiyu Lu,Jiren Tang,Yuanfei Ling,Lei Wang,Qi Yao,Zhidan Zhu 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.6
Based on the theory of hydraulic self-reversing and pressurization, a variable cross-section squeeze pulse water jet rock breaking platform was built. When the nozzle diameter is 0.5 mm, the granite erosion and crushing experiments under different driving pressures are carried out, and the depth, volume and specific energy consumption of the erosion pit are analyzed. The results show that the device can achieve intermittent injection after pressurizing the input fluid at a rate of 5.8 times. Meanwhile, the pressurization process of fluid is divided into ascending section, stable section and descending section. Compared with the continuous water jet with the same peak output pressure, the depth of destroyed granite is increased by 129 %-288 %, the volume of broken granite is increased by 37 %-121 %, and the specific energy consumption per unit of crushing volume is reduced by 21 %-74 %. The device can use low-pressure fluid to effectively crush granite.
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Jianyi Sun,Xiaosun Liu,Qing Zhang,Yanyun Hong,BIN SONG,Xiaodong Teng,Jiren Yu 대한영상의학회 2016 Korean Journal of Radiology Vol.17 No.4
Standard therapy has not been established for thyroid cancer when a thyroidectomy is contraindicated due to systemic disease. Herein, we reported a patient who had hypertrophic cardiomyopathy and papillary thyroid carcinoma treated by radiofrequency ablation because of inability to tolerate a thyroidectomy. Radiofrequency ablation can be used to treat thyroid cancer when surgery is not feasible, although the long-term outcome needs further observation.
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Zhu, Kankai,Jin, Hailong,Li, Zhijian,Gao, Yuan,Zhang, Qing,Liu, Xiaosun,Yu, Jiren The Korean Gastric Cancer Association 2021 Journal of gastric cancer Vol.21 No.1
Purpose: This study aimed to investigate the prognostic value of lymph node ratio (LNR) in patients with locally advanced gastric cancer who received neoadjuvant chemotherapy. Materials and Methods: We retrospectively enrolled gastric cancer patients treated with neoadjuvant chemotherapy and curative surgery at the First Affiliated Hospital of Zhejiang University from 2004 to 2015 as the study cohort. Patients with the same inclusion criteria treated in 2016-2017 were enrolled as the validation cohort. Kaplan-Meier curves were assessed using the log-rank test to analyze the differences in overall survival (OS). Multivariate survival analysis was performed using the Cox proportional hazards model. The areas under the receiver operating characteristic curve of ypN and LNR categories for predicting the actual 3-year OS were compared. Results: A total of 265 patients were included in the proposal cohort. The median number of retrieved lymph nodes (rLNs) was 32. The number of positive lymph nodes (pLNs) increased as rLN increased (P=0.037), but the LNR remained relatively constant (P=0.462). The LNR was categorized into 4 groups according to the prognosis: ypNr0, node-negative with rLN>25; ypNr1, node-negative with rLN≤25 or 0<LNR≤0.1; ypNr2, 0.1<LNR≤0.3; and ypNr3, LNR>0.3. In the validation cohort of 43 enrolled patients, there was a clear distinction in OS that significantly (P<0.001) varied depending on the LNR values and LNR was the only independent prognostic factor in multivariate analysis (P<0.001). Conclusions: LNR was an independent prognostic factor for survival of patients with gastric cancer after preoperative chemotherapy and might be an alternative predictor for ypN stage.
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