Subjects: Library Science，Information Science >> Library Science submitted time 2023-08-27 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] This paper aims to further improve the theoretical research. The research results will provide the theoretical foundation and idea about developing users'information encountering ability as well as optimize service content and improving service pattern for relative service providers.[Method/process] Firstly, 30 key information encountering events of mobile Internet were collected by using semi-structural interview. Furthermore, Nvivo11 was introduced to conduct coding analysis based on Grounded Theory. After conceptualization and categorization for the relationships among free nodes, 13 tree nodes and 7 core tree nodes about information encountering process were determined.[Result/conclusion] The whole information encountering process of mobile Internet can be divided into three stages:before, in and after information encountering, which contains 7 steps, i.e., attention, start, trace, obtain, utilize, return and end. These three stages go through cognitive division, cover division and span division respectively, and then complete the sense-making of encountered information.
Subjects: Library Science，Information Science >> Library Science submitted time 2023-08-26 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] In the current Web 2.0 network environment, information encountering is one important method to get information for the undergraduate group. This study is of important significance of improving the ability of information encountering and information literacy for university students.[Method/process] Aiming at university students, this paper studies the sensitive influence factors of information encountering in the environment of network. Specifically speaking, this paper uses information gain to analyze the correlation between each influence factor and information encountering frequency, and then builds the model of sensitive influence factor. Furthermore, support vector machine(SVM) is introduced to establish the prediction model for information encountering frequency.[Result/conclusion] There exists 10 most sensitive influence factors for information encountering which are located in four dimensions including information user, encountering information, network environment and situation factors. The predicted classification accuracy can reach 82.96%, which demonstrates SVM works well to predict information encountering frequency.
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2022-12-20 Cooperative journals: 《中国全科医学》
Abstract：
In recent years，due to the increase of life pressure，more and more men and women of childbearing age suffer from hypertension in China. Therefore，how to standardized management of hypertension during the preparation for pregnancy has become the current focus. This article describes that the maternal and fetal safety should be considered in the management of hypertension in women during the preparation for pregnancy，and drugs should be selected strictly according to the indications of blood pressure reduction. The medications currently recognized as relatively safe worldwide cover methyldopa，labetalol，and nifedipine，etc. ACEI and ARB drugs are prohibited，and the use of diuretics is controversial. The efficacy of antihypertensive drugs and their adverse effects on sexual function and sperm quality，vitality and concentration should be considered when male hypertensive patients are preparing for pregnancy. The existing anti-hypertensive drugs recommended for men of childbearing age consist of Nebivolol，ACEI and CCB. Through the standardized management of hypertension during the preparation for pregnancy，the prognosis of pregnant women and fetuses can be improved to achieve prenatal and postnatal care and reduce national medical and health care expenditures finally.
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