摘要：多模态情感分析的关键是情感特征提取。针对现有研究存在特征表达能力不强、情感分析效率较低等问题,研究设计融合多尺度特征的多模态情感分析模型,以实现高效、多模态情感分析。对音频、图像和文本等多模态数据向量化;设计多尺度卷积神经网络并特征提取;进行统计池化处理,得到特征向量的标准差、最大值和平均值,引入注意力机制特征向量融合;利用跨模态数据及特征向量情感倾向识别。自建实验数据集比较结果表明,在单模态情感分析和多模态情感分析中,所提模型较现有模型均具有更高准确率,多模态数据的统计学特征以及统计学加权特征对于多模态情感分析具有重要价值。

摘要：Objectives: To evaluate the benefit of fluconazole prophylaxis in preventing i nvasive fungal infection in very low birth weight (VLBW) infants with central va scular access. Study design: A 3-year baseline period (1998 to 2000)was compare d with a subsequent 3-year period (2001 to 2003) during which a different proto col for preventing invasive fungal infection was used. All infants with a birth weight < 1500 g and with central vascular access were eligible for the study. Fl uconazole (Diflucan R)was administered for 28 days at a dose of 6 mg/kg every th ird day during the first week and daily after the first week. Results: There wer e no significant differences between the baseline and the fluconazole groups in demographic characteristics or risk factors for fungal infection. Fungal infecti on developed in 9 of the infants in the baseline group and in none of those in t he fluconazole group (P = .003). A trend of decreasing mortality rate between th e 2 groups (12.6%vs 8.1%; P = .32) was observed but was not statistically sign ificant. No adverse effects of fluconazole therapy were documented. Conclusions: Fluconazole prophylaxis appeared to be beneficial in preventing invasive fungal infection in VLBW infants.

摘要：Objective: The aim of the present study was to compare the Helicobacter pylori (HP) seropositivity and cytotoxin associated gene A (cagA) status in pregnant women with dyspeptic complaints and pregnant women with no gastrointestinal symptoms. Study design: Seventyone consecutive pregnant women with gastrointestinal complaints and 72 agematched pregnant women without any gastrointestinal symptoms or a history of gastrointestinal disease were included in the study. Demographic characteristics and H. pylori and cytotoxin associated gene A status of the groups were analysed. Results: The prevalence of H. pylori seropositivity was slightly but not significantly higher in patients with dyspeptic complaints compared to the controls (74.6%versus 63.8%, respectively, P>0.05). The incidence of dyspeptic complaints were 53.5%in HPseropositive and 40.9%in HPseronegative women (P>0.05). The prevalence of cytotoxin associated gene A positivity among H. pyloriseropositive women was significantly higher in dyspeptic pregnants compared to the controls (75.5%versus 45.7%, respectively, P=0.002). Among HPseropositive women, the incidence of dyspeptic complaints was significantly higher in cagApositive patients compared to the cagAnegative ones (65.6%versus 34.2%, respectively, P=0.002). When analysed according to the trimesters, the prevalence of cytotoxin associated gene A positivity among H. pyloriseropositive women was significantly higher in dyspeptic pregnants compared to the controls in the first trimester (68.0%versus 34.8%, respectively, P=0.021). Conclusion: Cytotoxin associated gene A-positive, virulant H. pylori strains were found to be more frequently associated with dyspeptic complaints in pregnant women.

摘要：Objective: The objective of the study was to evaluate the relationship among polyp site, number, diameter, and symptomatology in endometrial polyps in reproductive and postmenopausal women. Study design: One hundred fifty-five subjects with endometrial polyps were evaluated retrospectively. Sociodemographic characteristics, endometrial thickness, polyp number, diameter, and site were reviewed, and their relations with abnormal uterine bleeding were tested. Results: A total of 36.1% of the patients in the postmenopausal group and 44.4% of the patients in the reproductive-aged group were asymptomatic. In addition, 37.3% of polyps in the reproductive-aged and 29.2% in the postmenopausal group were multiple. Polyp number, diameter, and site were not different among the 2 groups (P = .282, P = .469, and P = .485, respectively). When patients were evaluated as a whole, symptomatology was not related with polyp number, diameter, and site (P = .677, P = .334, and P = .699, respectively). Conclusion: Many endometrial polyps are asymptomatic and multiple in nature. Polyp site, number, and diameter do not correlate with symptomatology.