PMC:7796058 / 45428-46110 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7796058","sourcedb":"PMC","sourceid":"7796058","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7796058","text":"In this paper, we focused on BLE proximity detection for contact tracing instead of precise positioning. Three categories of user location will be of importance for this paper including immediate (less than 60 cm), near (1–6 m), and far (\u003e10 m) distance of the Bluetooth receiver from active BLE beacon. On the other hand, it was still a challenge working with BLE signals that are interfered with by structures. Indoor setting and layout have direct effects on radio waves used in Bluetooth technology. Another challenge was that the different beacon types and battery states produce different signal strengths, so using one beacon library for all types of beacons was problematic.","tracks":[{"project":"LitCovid-PubTator","denotations":[{"id":"307","span":{"begin":626,"end":632},"obj":"Gene"},{"id":"308","span":{"begin":545,"end":551},"obj":"Gene"},{"id":"309","span":{"begin":296,"end":302},"obj":"Gene"}],"attributes":[{"id":"A307","pred":"tao:has_database_id","subj":"307","obj":"Gene:59286"},{"id":"A308","pred":"tao:has_database_id","subj":"308","obj":"Gene:59286"},{"id":"A309","pred":"tao:has_database_id","subj":"309","obj":"Gene:59286"},{"subj":"307","pred":"source","obj":"LitCovid-PubTator"},{"subj":"308","pred":"source","obj":"LitCovid-PubTator"},{"subj":"309","pred":"source","obj":"LitCovid-PubTator"}],"namespaces":[{"prefix":"Tax","uri":"https://www.ncbi.nlm.nih.gov/taxonomy/"},{"prefix":"MESH","uri":"https://id.nlm.nih.gov/mesh/"},{"prefix":"Gene","uri":"https://www.ncbi.nlm.nih.gov/gene/"},{"prefix":"CVCL","uri":"https://web.expasy.org/cellosaurus/CVCL_"}]},{"project":"LitCovid-sentences","denotations":[{"id":"T316","span":{"begin":0,"end":104},"obj":"Sentence"},{"id":"T317","span":{"begin":105,"end":303},"obj":"Sentence"},{"id":"T318","span":{"begin":304,"end":412},"obj":"Sentence"},{"id":"T319","span":{"begin":413,"end":503},"obj":"Sentence"},{"id":"T320","span":{"begin":504,"end":682},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"attributes":[{"subj":"T316","pred":"source","obj":"LitCovid-sentences"},{"subj":"T317","pred":"source","obj":"LitCovid-sentences"},{"subj":"T318","pred":"source","obj":"LitCovid-sentences"},{"subj":"T319","pred":"source","obj":"LitCovid-sentences"},{"subj":"T320","pred":"source","obj":"LitCovid-sentences"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"LitCovid-PubTator","color":"#ec93b2","default":true},{"id":"LitCovid-sentences","color":"#93ccec"}]}]}}