Search

Objective To explore the feasibility of navigation-guided sinus endoscopy to remove the cavernous vascular malformation of the orbital apex through the sphenoid approach. Methods A retrospective series of non-control cases were collected. From May 2012 to December 2019, patients with imaging findings of cavernous venous malformation in the orbital apex were collected at the Eye Hospital Affiliated to Nanchang University. All patients underwent navigation guided sinusoscopy through the sphenoid approach to remove the cavernous venous malformation of the orbital apex. Analyze the changes of visual function and postoperative complications before and after operation. Results Twelve patients were collected, including 3 males and 9 females aged between 32 and 59. In 3 patients without visual impairment, the postoperative visual function was still normal. The remaining 9 patients all had visual impairment. Among them, 3 patients had fully recovered normal visual function after operation, 2 patients had improved visual function compared with preoperative, and 4 patients had no change in postoperative visual acuity. There were no complications in 3 of the 12 patients, and 9 patients had transient limited intraocular rotation with mild limitation of diplopia after operation, and all returned to normal within 1 month after surgery. Conclusion Navigation-guided sinus endoscopy through the sphenoid approach to remove the cavernous venous malformation of the orbital apex is an effective and feasible surgical method.

The ranking method can distinguish the size of intuitionistic fuzzy numbers and Pythagorean fuzzy numbers, and plays an important role in the application of intuitionistic fuzzy sets and Pythagorean fuzzy sets. Based on the summary of classic ranking methods, this paper proposes some new ranking methods. Firstly, some basic concepts of intuitionistic fuzzy set and Pythagorean fuzzy set are introduced. Secondly, four existing ranking methods of intuitionistic fuzzy numbers and four existing ranking methods of Pythagorean fuzzy numbers are summarized. Then, the new ranking methods of intuitionistic fuzzy numbers and Pythagorean fuzzy numbers are proposed respectively. Finally, the accuracy and reliability of the new ranking methods are verified by case analysis.

Objectives to investigate the quality of life and the associated factors on left behind elderly in rural China. Method the research was conducted cluster sampling to select 456 elderly left behind when family members migrated out of rural China to participate in a cross-sectional study by completing a general data questionnaire and Quality of Life questionnaire. Results 91.5% of the elderly requested psychological counseling and education. For the elderly, scores for mental health (39.56±13.73) were significantly lower compared with Chinese standard data (61.6±13.7) (P

Preference relations (PRs) are an effective tool to express people's opinions over alternatives. But it is usually difficult to give accurate information using crisp numbers. The main purpose of this paper is to propose the complementary triangular hesitant fuzzy preference relations (CTHFPRs) to solve the above correlative problem. Two aggregation operators are defined and some of their properties are discussed. In addition, we give the definition of consistency and propose two methods to measure consistency for the presented preference relations. Next, a decision-making approach under triangular hesitant fuzzy environment is constructed and a numerical examples is provided to illustrate the availability of the proposed PRs and consistency measure methods.

OBJECTIVES: to investigate the quality of life and the associated factors on left behind elderly in rural China.METHOD: the research was conducted cluster sampling to select 456 elderly left behind when family members migrated out of rural China to participate in a cross-sectional study by completing a general data questionnaire and Quality of Life questionnaire.RESULTS: 91.5% of the elderly requested psychological counseling and education. For the elderly, scores for mental health (39.56±13.73) were significantly lower compared with Chinese standard data (61.6±13.7) (P

With respect to risk decision making problems, a multi-criteria decision making method based on prospect theory is proposed. This method firstly describes multi-criteria decision making problem. Reference points of criteria are given and the outcomes for criteria are calculated. Then, according to value function and decision weight function, the prospect value of criteria for every alternative is calculated, and the prospect value of alternative is acquired by weighted average method. At last, all the alternatives are sorted and the optimal one is chosen according to the prospect values. Feasibility of the method is demonstrated by a simple illustrative example.