This paper proposes an auto-focus Instruction function. The function is derived from Ostu segmentation. It uses class variance of segmentation result to instruct auto-focus process. Compare with the exist functions, class variance function need a small calculation mount. It is immunity to jam coming from camera and other inspection. It responses in a wide object distance range. And the value ch...

Over the past four decades, the world has made substantial gains in the effort to prevent unplanned pregnancies and reduce the risk of sexually transmitted infections (STIs), including HIV, and other reproductive tract infections (RTIs). Yet, STIs and RTIs still cause a heavy health burden, especially in developing countries, and there is an equally urgent unmet need for contraception [1–6]. To...

this study aims to compare the effects of four types of ffi on second language vocabulary learning. to do so, the study adopted a quasi-experimental pretest-posttest design, including five groups, each receiving a distinct treatment. the participants were 80 fourth-grade male students ranging in age from 17 to 19. before the treatment phase, the participants took a researcher-made test of vocab...

This study investigated the effectiveness of incidental focus on form in promoting second language development in text-based live chats. Sixteen college-level Taiwanese English language learners were partnered with American college students to complete two communicative tasks via synchronous chats on Instant Messenger. Language-related episodes (LREs) were identified and used as a basis for ind...

BACKGROUND The disparity in rates of sexually transmitted diseases (STDs), HIV/AIDS, and unplanned pregnancy between Alaska Native (AN) and non-AN populations, particularly among young adults and females, is significant and concerning. Focus groups were conducted to better understand the knowledge, attitudes, and beliefs of rural Alaska youth (both AN and non-AN) and communities regarding STDs,...

BACKGROUND Patients at high risk of emergency hospitalisation are particularly likely to experience fragmentation in care. The virtual ward model attempts to integrate health and social care by offering multidisciplinary case management to people at high predicted risk of unplanned hospitalisation. OBJECTIVE To describe the care practice in three virtual ward sites in England and to explore h...