Results 1 to 10 of about 14,634 (118)

APPLICABILITY ANALYSIS OF ULTRA-LIGHT UAV FOR FLOODING SITE SURVEY IN SOUTH KOREA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Recently, UAV (Unmanned Aerial Vehicle) is used in a variety of fields such as the military service, fire prevention, traffic supervision, mapping, and etc.
I. Lee, J. Kang, G. Seo
doaj   +1 more source

‘Alexa, Adv(ert)ise us!’

open access: yesMedienPädagogik: Zeitschrift für Theorie und Praxis der Medienbildung, 2021
Digital assistants increasingly infiltrate the world of children. The way they function reminds us somewhat of playmates, nannies and tutors. So far, educators have only marginally dealt with this new media phenomenon, yet the use of smart speakers by ...
Michael Haas, Anna Keller
doaj   +1 more source

Visualizing Hong Kong’s mass transit usage under COVID-19

open access: yesRegional Studies, Regional Science, 2021
The COVID-19 pandemic hit the world hard. It has induced many abrupt changes, including lockdowns and business closures. Using changes in local public transit usage as proxies of mobility patterns in a typical high-density city where public transit ...
Jiangping Zhou   +2 more
doaj   +1 more source

A Novel Electroporation System for Living Cell Staining and Membrane Dynamics Interrogation

open access: yesMicromachines, 2020
A novel electroporation system was developed to introduce transient membrane pores to cells in a spatially and temporally controlled manner, allowing us to achieve fast electrotransfection and live cell staining as well as to systematically interrogate ...
Yuanjun Zhang   +3 more
doaj   +1 more source

Smart Home Voice Assistants: A Literature Survey of User Privacy and Security Vulnerabilities

open access: yesComplex Systems Informatics and Modeling Quarterly, 2020
Intelligent voice assistants are internet-connected devices, which listen to their environment and react to spoken user commands in order to retrieve information from the internet, control appliances in the household, or notify the user of incoming ...
Khairunisa Sharif, Bastian Tenbergen
doaj   +1 more source

Shielding Electric Fields to Prevent Coalescence of Emulsions in Microfluidic Channels Using a 3D Metallic Coil

open access: yesMicromachines, 2015
In microfluidics, electric fields are widely used to assist the generation and the manipulation of droplets or jets. However, uncontrolled electric field can disrupt the operation of an integrated microfluidic system, for instance, through undesired ...
Jingmei Li   +3 more
doaj   +1 more source

Probing defects in ZnO by persistent phosphorescence

open access: yesOpto-Electronic Advances, 2018
Native point defects in ZnO are so complicated that most of them are still debating issues, although they have been studied for decades. In this paper, we experimentally reveal two sub-components usually hidden in the low energy tail of the main broad ...
Ye Honggang   +7 more
doaj   +1 more source

المساعد الصوتي الرقمي: مراجعة علمية [PDF]

open access: yesالمجلة الدولية لعلوم المكتبات والمعلومات
تناولت هذه الدراسة مراجعة أدبيات الإنتاج الفكري حول موضوع المساعد الصوتي الرقمي بهدف الوقوف على سماته وتحليل خصائصه موضوعية والزمنية والنوعية في الفترة الزمنية من عام 2007 وحتى عام 2023 وكشف آخر ما تم توصل إليه من نتائج تتعلق به من خلال مسح مفردات ...
آلاء سيد أبو حطب
doaj   +1 more source

Izdelava probiotičnega sira z dodatkom Lactobacillus gasseri LF221(Rifr) in K7(Rifr)

open access: yesActa Agriculturae Slovenica, 2002
Lactobacillus gasseri LF221 in K7 sta humana izolata, ki proizvajata bakteriocine s širokim spektrom protimikrobne aktivnosti, sta odporna proti nizkim pH vrednostim in žolču, preživita v prebavnem traktu miši in pujskov in s tem izpolnjujeta osnovne ...
Bogdan PERKO   +2 more
doaj   +1 more source

Juvenile development of Callinectes danae Smith, 1869 (Crustacea, Decapoda, Brachyura, Portunidae) under laboratory conditions

open access: yesAnais da Academia Brasileira de Ciências, 2014
The juvenile development of Callinectes danae was investigated from megalopae obtained in neuston samples at Ubatuba, São Paulo, Brazil. The individuals were raised in the laboratory under constant temperature (25 ± 1°C), filtered sea water from the ...
EDUARDO A. BOLLA Jr   +2 more
doaj   +1 more source

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