Land use change has been assessed widely using Remote Sensing (RS) and Geographic Information System (GIS) techniques. The analysis of land use change was done by detecting land cover change. A study about land cover change, along with the self-employed workers' perception towards changes between 2007 and 2017 were carried out in Nam Tu Liem District, Hanoi, Vietnam.The result of the study shows that the built-up lands have increased and remained to be the dominant land cover types in 2017. The agriculture has been declining mainly due to conversion into built-up land. Other land type including water, bare land, and vegetation have shown slight changes throughout the years. Overall changes from 2007 to 2017 shown that built-up land gained the most and agriculture land lost the most. On the other hand, the perception study's major findings indicate that about two-thirds (69%) of respondents are aware of changes. However, almost one-third (31%) are unaware of the said topic. There are several factors that may affect the awareness of selfemployed workers which will be cursory discussed in the study. This study in Nam Tu Liem District is a first step to determine and understand the major driving factors and their impacts on the land use changes in the area. A detailed land use/cover change study and a larger population size for perception studies are recommended in order for the government to formulate policies to achieve sustainable development.
Objective: This study aims to describe the COVID-19 related information searching behaviors and the relationship between those behaviors and the satisfaction with the COVID-19 related information searched on the Internet among university students during first wave of the COVID-19 pandemic in Vietnam. Methods: A cross-sectional study was conducted by a web-based survey from April 25, 2020 to May 9, 2020. Convenient sample with the method of snowball sampling was applied, 1003 students were obtained totally. Multivariable logistic regression model was used to identify the associations between those behaviors and the satisfaction with the COVID-19 related information searched on the Internet. Results: Search engines were the most popular sources used for online COVID-19 information seeking (95.3%), followed by Social media (92.4%) and News portals (91.6%). About 90% of participants searched the information related to the current spread of the coronavirus, followed by symptoms of the COVID-19 (81.8%) and individual measures to protect against infection (81.9%). Vietnamese remains the main language of the sources with 70.3% of participants used. There’s 45.8% of participant satisfied about the COVID-19 related information. The group of participants who sought information about prevention was 0.47 times less dissatisfied than the group that did not search. Conclusion: There are significant associations between searching topics related to prevention and the COVID-19 related information satisfaction searched on the Internet. These results highlight the need for providing efficient information related to the COVID-19 pandemic as well as seriously consider focusing more on social media to better bring official information to the public. Keywords: COVID-19, information searching behaviors, university students, satisfaction
Nghiên cứu mô tả cắt ngang trên 1902 giáo viên ở Việt Nam có độ tuổi từ 18- 59 từ ngày 15/5/2021 đến 16/6/2021. Mục tiêu nghiên cứu nhằm xác định tỷ lệ và một số yếu tố liên quan đến chấp nhận tiêm vắc xin phòng COVID-19 của giáo viên Việt Nam. Kết quả: tỷ lệ đối tượng nghiên cứu chấp nhận tiêm vắc xin là 85,9%; 69,1% sẵn sàng trả tiền tiêm vắc xin. Các yếu tố liên quan đến tỷ lệ chấp nhận tiêm vắc xin là nhóm tuổi từ 40 đến 49 tuổi và từ 50 đến 59 tuổi sẵn sàng tiêm vắc xin gấp 2,05 lần và 2,67 lần so với nhóm từ 18-29 tuổi (p<0,001), giáo viên cấp THCS và THPT tỷ lệ chấp nhận tiêm ít hơn so với nhóm giáo viên mầm non (p<0,001), nhóm giáo viên có gia đình sẵn sàng tiêm vắc xin gấp 2,21 lần so với nhóm còn độc thân (p<0,001), tình trạng mắc bệnh mạn tính làm giảm tỷ lệ chấp nhận tiêm vắc xin (p<0,001); chưa tìm thấy sự khác biệt về việc chấp nhận tiêm phòng vắc xin COVID-19 giữa thành phố và nông thôn, nhóm nam và nữ, giữa người dân tộc Kinh với những người dân tộc khác. Kết luận: kết quả nghiên cứu cho thấy tỷ lệ giáo viên chấp nhận tiêm vắc xin cao, đa số chấp nhận chi trả cho việc tiêm vắc xin. Các yếu tố liên quan đến tỷ lệ chấp nhận tiêm vắc xin có ý nghĩa là nhóm tuổi, cấp giảng dạy, tình trạng hôn nhân và tình trạng mắc bệnh mạn tính.
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