Dynamics of Nonlinear System Based on a CMOS Array Circuit with Quantized Internal States

Jun Qi Zhu,Katsufusa Shono 대한전자공학회 1994 대한전자공학회 세미나 Vol.1994 No.-

Generalized Area Spectral Efficiency of Wireless Ad-hoc Networks over Rayleigh Fading

Jun Zhu,Lei Zhang,Hong-Chuan Yang,Mazen O. Hasna 한국통신학회 2020 Journal of communications and networks Vol.22 No.4

Generalized area spectral efficiency (GASE) was introduced as a metric to quantify the spectral utilization efficiency ofwireless transmissions. Unlike other performance metrics, GASEtakes into account the spatial property of wireless transmissions. In this paper, we extend the research on GASE from link levelto network level. In particular, we consider a wireless ad-hoc network with Poisson distributed nodes. We take into account the cochannel interference and derive the generic closed-form momentgenerating function (MGF) expression of aggregate interferencein such network. With the interference statistics, we calculate theergodic capacity, affected area, and GASE of the network overRayleigh fading channels. Furthermore, we analyze the effect ofcarrier sense multiple access with collision avoidance (CSMA/CA)mechanism on the GASE performance of such network. Finally,we propose a new cognitive paradigm that allows the secondarytransmitters that are located outside the primary affected area totransmit. With this paradigm, we can achieve high ergodic capacitywhile effectively utilizing the space-spectrum resource of primarynetwork. Besides, through mathematical analysis and numericalexamples, we show that GASE provides a new perspective on transmission power selection and secondary network optimization.

Comparative Analysis of Coreless Axial Flux Permanent Magnet Synchronous Generator for Wind Power Generation

Zhu Jun,Li Guanghua,Cao Di,Zhang Zhenyi,Li Shuaihui 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.2

A 90° Halbach permanent magnet array coreless axial fux permanent magnet synchronous generator for wind power generation is compared with a conventional axial fux permanent magnet generator with cut cake type permanent magnet. 2D analytic model of generator is established. The air gap magnetic felds of two generators are analyzed by analytical method, and the air gap magnetic density and harmonic content are analyzed. Then the infuence of diferent parameters on voltage total harmonic distortion is analyzed by changing the pole arc coefcient, air gap length, permanent magnet thickness and number of turns. Two prototypes of generators are manufactured, and the correctness of the simulation results is verifed by experiments.

Clinicopathological characteristics, treatment and outcomes in uterine carcinosarcoma and grade 3 endometrial cancer patients: a comparative study

Jun Zhu,Hao Wen,Rui Bi,Xiaohua Wu 대한부인종양학회 2016 Journal of Gynecologic Oncology Vol.27 No.2

Objective: Uterine carcinosarcoma (UCS) shared the same staging system with endometrial carcinoma in the International Federation of Gynecology and Obstetrics 2009. The aim of the present study was to compare the clinicopathological and prognostic characteristics between UCS and grade 3 endometrioid endometrial carcinoma (G3EC). Methods: A retrospective analysis of 60 UCS and 115 G3EC patients with initial treatment at the Department of Gynecology in the Fudan University Shanghai Cancer Center between February 2006 and August 2013. Chi-square analysis was used to compare differences between variables. Prognostic factors were determined using univariate/multivariate analysis, and the survival rates were assessed using the Kaplan-Meier method. The Cox regression model was used to assess the independent prognostic factor. Results: UCS had significantly worse overall survival (OS) compared with G3EC. Carcinosarcoma subtype was an independent factor (hazard ratio [HR], 2.4; 95% confidence interval [CI], 1.0 to 5.8; p=0.039), stratified based on stage. Compared with G3EC, UCS patients had a greater incidence of ascites fluid (55.0% vs. 15.7%, p<0.001) and adnexal involvement (20.0% vs. 8.7%, p=0.048) and larger median tumor volume (4.6 cm vs. 4.0 cm, p=0.046). Subgroup analysis of the prognostic factors revealed that UCS patients exhibited worse OS than G3EC patients in such specific subgroups as patients at younger ages, with postmenopausal status, without ascites fluid, with early stage diseases, without vagina invasion, without lymph node metastases and receiving adjuvant chemo/radiotherapy. Adjuvant radiotherapy with chemotherapy was predictive of better survival in UCS patients compared with chemotherapy or radiotherapy alone (5-year OS, 71.0% vs. 35.8%, p=0.028). Multivariate Cox regression revealed that tumor mesenchymal component (HR, 4.6; 95% CI, 1.4 to 15.8; p=0.014) was an independent prognostic factor for UCS, whereas advanced stages (HR, 5.9; 95% CI, 1.0 to 33.9; p=0.046) and ascites fluid (HR, 5.1; 95% CI, 1.1 to 22.7; p=0.032) were independently correlated with poor prognosis for G3EC patients. Conclusion: The distinctions in both clinicopathological and prognostic characteristics between UCS and G3EC suggest that this subtype should be treated separately from high-risk epithelial endometrial carcinoma.

“(是)……的”句中“的”与宾语的位置关系 --以“S(是)AVO的”和“S(是)AV的O”句式为主

Zhu-jun Lian 한국중국언어학회 2022 중국언어연구 Vol.- No.98

“(是)……的”焦点句中宾语可以放在“的”之前,也可以放在“的”之后,我们将前者称为“VO的”句式,后者为“V的O”句式。本文通过语料库考察了以下三种情况:(1)采用“VO的”句式、不采用“V的O”句式的情况,(2)采用“V的O”句式、不采用“VO的”句式的情况,(3)两种句式都可采用的情况。 通过考察我们详细列出了属于(1)和(2)两种情况的语义和句法条件,发现”V的O“句式比”VO的“句式具有更强的构式义,能够把进入其中的不符合条件的V和O强制解读为符合条件的成分。 对于第(3)种情况,本文证实并分析了以下三种倾向性:(A)当“VO”为动宾式离合词时,人们倾向于采用“V的O”句式,(B)当宾语为代词时,人们倾向于采用“VO的”句式,(C)当动词后同时出现结果补语和宾语时,人们倾向于采用“VO的”句式,不管宾语是特指性成分还是泛指性成分。此外,我们还发现话者的态度也会影响到选择哪种句式。当话者对言及的事件十分在意时,往往会采用“VO的”句式,而当话者要客观陈述某个事件或对某个事件不太在意时,则往往采用“V的O”句式。因为存在这种区别,这两种句式在对话语体中会带来不同的语用效果:采用“VO的”句式可以让话者的言语带上某种比较强烈的感情,而采用“V的O”句式则会拉开话者与听者的距离,使话者听起来显得冷淡、冷漠。

Fault-tolerant Control for Linear System Under Sensor Saturation Constraint

Jun-Wei Zhu,Qiao-Qian Zhou,Jianming Xu,Jian-Wei Dong 제어·로봇·시스템학회 2021 International Journal of Control, Automation, and Vol.19 No.1

An observer-based fault-tolerant control method is proposed for a linear system with sensor saturationconstraint. Considering the linear system with simultaneous actuator faults and sensor faults, the sensor saturation would bring the output measurement error of the system, which would result in the estimation performancedegradation. Firstly, the intermediate estimator is modified to estimate the system states and fault signals at thesimultaneous time, and the fault-tolerant controller is designed based on the estimation to compensate the effectof actuator faults effectively. Through Lyapunov stability analysis, the sufficient conditions are obtained to ensurethe states of closed-loop system to be uniformly ultimately bounded. The effect of sensor saturation error can besuppressed by adjusting some specified parameters directly without introducing any performance index. Finally, theeffectiveness and superiority of the proposed method are verified by a simulation example

An eigenspace projection clustering method for structural damage detection

Jun-hua Zhu,Ling Yu,Li-li Yu 국제구조공학회 2012 Structural Engineering and Mechanics, An Int'l Jou Vol.44 No.2

An eigenspace projection clustering method is proposed for structural damage detection by combining projection algorithm and fuzzy clustering technique. The integrated procedure includes data selection, data normalization, projection, damage feature extraction, and clustering algorithm to structural damage assessment. The frequency response functions (FRFs) of the healthy and the damaged structure are used as initial data, median values of the projections are considered as damage features, and the fuzzy c-means (FCM) algorithm are used to categorize these features. The performance of the proposed method has been validated using a three-story frame structure built and tested by Los Alamos National Laboratory, USA. Two projection algorithms, namely principal component analysis (PCA) and kernel principal component analysis (KPCA), are compared for better extraction of damage features, further six kinds of distances adopted in FCM process are studied and discussed. The illustrated results reveal that the distance selection depends on the distribution of features. For the optimal choice of projections, it is recommended that the Cosine distance is used for the PCA while the Seuclidean distance and the Cityblock distance suitably used for the KPCA. The PCA method is recommended when a large amount of data need to be processed due to its higher correct decisions and less computational costs.

A Novel Intermediate Estimator Based Secure Consensus Control for Multi-agent Systems with Application to Networked Multi-axis Motion Synchronization

Jun-Wei Zhu,Chao-Yang Liang,De-Feng He,Xin Wang 제어·로봇·시스템학회 2021 International Journal of Control, Automation, and Vol.19 No.4

This paper studies the secure consensus control problem of multi-agent systems under DoS attacks onthe sensor, the actuator, and the communication topology. A resilient intermediate estimator based attack tolerantcontrol strategy is proposed. By fully exploiting the hardware redundancies, both of the estimators and the controlprotocols can be reconstructed online according to different DoS attack scenarios. Finally, the experiment results ofthe networked multi-axis motion control system are given to verify the effectiveness of the proposed method.

Juvenile hormone-mediated reproduction induced by a sublethal concentration of imidacloprid in Cyrtorhinus lividipennis (Hemiptera: Miridae)

Jun Zhu,Yao Li,Ying-Ying Tang,Jian-Qi Liu,Yi-Yu Chen,Zhongxian LV,Fang Liu 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.1

The Hemipteran predator, Cyrtorhinus lividipennis, feeds on the eggs and nymphs of rice planthoppers and leafhoppers. We previously demonstrated that sublethal concentrations of imidacloprid stimulated the reproduction of C. lividipennis. Considering the essential roles of juvenile hormone (JH) in insect reproduction, we speculated that sublethal concentrations of imidacloprid may stimulate the reproduction of C. lividipennis by regulating JH level. To test this, we cloned C. lividipennis JH acid methyl transferase (ClJHAMT) and JH esterase (ClJHE), which are responsible for JH biosynthesis and degradation genes, respectively. We then knocked down ClJHAMT by injecting dsRNA into C. lividipennis nymphs and found that emerging female adults exhibited 88.8% lower expression of the vitellogenin gene (ClVg) and the number of eggs was reduced by 41.5% as compared with controls. Silencing ClJHE increased ClVg mRNA expression by 275.0% but did not affect fecundity. A sublethal concentration of imidacloprid (LC 20 ) increased the JH titer in females by 35.3% and 60.6% at 24 and 48 h post-emergence, respectively. In treatments containing both imidacloprid and dsJHAMT, the silencing of CLJHAMT reduced the number of eggs produced by adult females by 21.4% as compared to the control (imidacloprid + dsGFP). Our results indicated that sublethal concentration of imidacloprid may induce C. lividipennis reproduction by upregulating JH level via JHAMT. The finding could provide valuable information for improved integration of C. lividipennis and insecticides in pest management.

Sentinel lymph Node mapping versus systematic pelvic lymphadenectomy on the prognosis for patients with intermediate-high-risk Endometrial Cancer confined to the uterus before surgery: trial protocol for a non-inferiority randomized controlled trial (SNE

Jun Guan,Yu Xue,Rong-yu Zang,Ji-hong Liu,Jian-qing Zhu,Ying Zheng,Bo Wang,Hua-ying Wang,Xiao-jun Chen 대한부인종양학회 2021 Journal of Gynecologic Oncology Vol.32 No.4

Background: Sentinel lymph node (SLN) mapping has been recommended as an alternative staging approach to lymphadenectomy for apparent uterine-confined endometrial cancer (EC). However, the prognostic value of SLN mapping alone instead of systematic lymphadenectomy on EC patients remains unclear. Methods: A multi-center, open label, non-inferiority randomized controlled trial has been designed to identify if SLN mapping alone is not inferior to pelvic lymphadenectomy on prognosis of patients with intermediate-high-risk EC clinically confined to uterus. Eligible patients will be 1:1 randomly assigned to accept SLN mapping or pelvic lymphadenectomy. The primary endpoint is the 2-year progression-free survival (PFS). The second points are the 5-year PFS, 5-year overall survival, surgery-related adverse events and life quality. A total of 780 patients will be enrolled from 6 hospitals in China within 3-year period and followed up for 5 years. Trial Registration: ClinicalTrials.gov Identifier: NCT04276532