Smart Grid Outlier Detection Based on the Minorization-Maximization Algorithm.

Outliers can be generated in the power system due to aging system equipment, faulty sensors, incorrect line connections, etc. The existence of these outliers will pose a threat to the safe operation of the power system, reduce the quality of the data, affect the completeness and accuracy of the data, and thus affect the monitoring analysis and control of the power system. Therefore, timely identification and treatment of outliers are essential to ensure stable and reliable operation of the power system.

Detection of False Data Injection Attacks in Smart Grids Based on Expectation Maximization.

The secure operation of smart grids is closely linked to state estimates that accurately reflect the physical characteristics of the grid. However, well-designed false data injection attacks (FDIAs) can manipulate the process of state estimation by injecting malicious data into the measurement data while bypassing the detection of the security system, ultimately causing the results of state estimation to deviate from secure values. Since FDIAs tampering with the measurement data of some buses will lead to error offset, this paper proposes an attack-detection algorithm based on statistical learning according to the different characteristic parameters of measurement error before and after tampering.

Video-assisted thoracoscopy versus open approach in patients with Masaoka stage III thymic epithelial tumors.

Background: The treatment options for Masaoka stage III thymic epithelial tumors are diverse, mainly because the lesions infiltrate the neighboring organs, major vascular structures, with different scopes, extents, and manners. Surgical treatment is the main treatment for the patient in this stage. However, for minimally invasive or open surgery, the current controversy remains large.

Is mitochondrial tRNA Cys G5821A a deleterious mutation?

Although there are increasing reports showed a positive link between mitochondrial tRNACys G5821A mutation and mitochondrial diseases. However, its role remained controversial. In this paper, we took a comprehensive data analysis concerning this mutation and clinical diseases.

[Association between nuclear factor of activated T cells 1 gene mutation and simple congenital heart disease in children].

Objective: To elucidate association between the mutation of nuclear factor of activated T cells 1 (NFATC1) gene in IPT-NFAT region and simple congenital heart disease (CHD) in children.

Method: We used polymerase chain reaction (PCR) and the sequencing reaction to detect the mutations on the patients and their parents and (or) siblings.

Results: PCR amplification of the exon 7 region showed that 2 bands are obtained in 58% of patients with CHD and in 74% of their healthy parents and (or) siblings.

[Multi-factor model of quality of life in patients with acute coronary syndrome].

Objective: To detect the risk factors of quality of life (QOL) in patients with acute coronary syndrome (ACS), so as to help doctors to recognize the risk population with impaired QOL.

Methods: 403 hospitalized ACS patients, 252 males and 151 females, aged 67 12, 168 with ST-segment elevation myocardial infarction (STEMI), 4 with non-ST-segment elevation myocardial infarction (NSTEMI), and 74 with unstable angina pectoris (UAP), were surveyed with short-form-36 (SF-36) scale (Chinese version), including physical component summary (PCS) and mental component summary (MCS) so as to analyze the QOL, hospital anxiety depression scales (HADS) so as to detect the anxiety status. Multiple linear regression analysis was conducted to identify the variables associated with QOL.

[Surgical treatment on residual shunt after repair of ventricular septal defect].

Objective: To summarize the experience in surgical treatment of residual shunt after repair of ventricular septal defect and investigate the position of the residual shunts.

Methods: Between January 1979 and May 2003, re-operations on residual shunt after repair of ventricular septal defect were performed in 37 patients with congenital heart disease including ventricular septal defect, tetralogy of Fallot, double outlet right ventricle in 19, 17 and 1 patients, respectively. It accounted for 0.

[Effect of non-pulsatile blood flow on the secretion of calcitonin-gene-related peptide in patients undergoing total cavopulmonary connection].

Objective: To study the changes of calcitonin gene-related peptide (CGRP) in patients who underwent total cavopulmonary connection (TCPC) and to assess the effects of non-pulsatile blood flow on the secretion function of the lung.

Methods: Twenty-six patients were divided into 2 groups: study group, 13 patients who underwent extracardiac TCPC, and control group, 13 patients who underwent definitive repair for ventricular septal or atrial septal defect. Blood samples for measurement of CGRP were obtained preoperatively, postoperatively or in the follow-up period.