John Frankenfield's research while affiliated with Florida Atlantic University and other places

Publications (12)

Article
Full-text available
Several places across the world are experiencing a steep surge in COVID-19 infections. Face masks have become increasingly accepted as one of the most effective means for combating the spread of the disease when used in combination with social-distancing and frequent hand-washing. However, there is an increasing trend of people substituting regular...
Preprint
Full-text available
Several places across the world are experiencing a steep surge in COVID-19 infections. Face masks have become increasingly accepted as one of the most effective means for combating the spread of the disease, when used in combination with social-distancing and frequent hand-washing. However, there is an increasing trend of people substituting regula...
Article
Full-text available
The use of face masks in public settings has been widely recommended by public health officials during the current COVID-19 pandemic. The masks help mitigate the risk of cross-infection via respiratory droplets, however, there are no specific guidelines on mask materials and designs that are most effective in minimizing droplet dispersal. While the...
Conference Paper
AUV-based field measurement and characterization of the electromagnetic field in coastal waters associated with live submerged cables is described. The effort is in support of a program to characterize the EMF emissions associated with submerged power transmission cables from offshore energy harvesting devices to shore and identifying their environ...
Conference Paper
Sea-keeping characteristics of a wave-adaptive modular catamaran, developed by Marine Advanced Research Inc., is studied using at-sea experiments and dynamic modeling. The vehicle is based on the Proteus design and is supported by two inflatable pontoons with each pontoon attached to a center payload tray using an independent suspension system conn...
Article
AUV-based measurement of the magnetic field offshore of South Florida is described. The effort is part of a measurement program involving observations from fixed and mobile sensor systems in the region in support of characterizing the local background magnetic field in coastal waters. A SeaSpy magnetometer is towed at some distance from a Bluefin 2...

Citations

... Apart from the airborne route, the contaminated respiratory droplet may also get deposited on a surface to form fomite, which serves as a potential source of infection spread upon touch [15,16]. Therefore, apart from the usage of face masks, face shields, social distancing [17][18][19][20][21][22][23][24][25], sanitization of frequently-touched surfaces was also recommended by the World Health Organization (WHO) [26]. It is noteworthy that, although the airborne route is thought to be the predominant route of transmission, the fomite route of transmission cannot be totally ruled out while assesing the total risk of infection spread, especially in a typical indoor environment [27]. ...
... Consistentemente con este resultado, Verma y col. [60], [61] mostraron que el uso de casi cualquier tapabocas o protector facial permite el escape de gotas inferiores a 10 μm. Los autores estudiaron el movimiento de la pluma de aerosoles emitida al cabo de un evento de tos generado por un maniquí realista (Figura 6.1.2). ...
... Hanya menggunakan safety goggles tidak dapat mencegah penularan COVID-19 (Khunti et al., 2020). Begitu pula dengan hanya menggunakan face shield tanpa masker karena masih terdapat celah untuk droplets masuk ke dalam saluran pernapasan (Verma, Dhanak, & Frankenfield, 2020). ...
... The first is the mistaken belief that a visor offers as much protection as a facemask, with this ironically being most evident in the vulnerable 65-74 age group. The evidence that use of visors without a mask does not offer efficient protection has since become well established (Salimnia et al., 2021;Verma et al., 2020). The mistaken belief that emerged in our data may now be less of a concern locally as public health messages that have been launched intending to correct this have probably taken effect. ...
... There were more breaches, or breaches at a higher concentration, on a large manikin head compared to a small head, presumably because of less coverage at the periphery of the face. Our laboratory experiment findings are comparable to those in recent similar studies, 5,[13][14][15][16][17] in that we observe that the large gaps around many face shield products provide opportunities for droplet ingress. The laboratory tests indicate that face shields with complete (wrap around) facial coverage tended to be more protective, stable on the head when worn and easier to wear correctly. ...
... There were more breaches, or breaches at a higher concentration, on a large manikin head compared to a small head, presumably because of less coverage at the periphery of the face. Our laboratory experiment findings are comparable to those in recent similar studies, 5,[13][14][15][16][17] in that we observe that the large gaps around many face shield products provide opportunities for droplet ingress. The laboratory tests indicate that face shields with complete (wrap around) facial coverage tended to be more protective, stable on the head when worn and easier to wear correctly. ...
... Gupta, Lin & Chen 2009;Jiang et al. 2009;Gralton et al. 2011;Van Sciver, Miller & Hertzberg 2011;Bourouiba, Dehandschoewercker & Bush 2014;Techet, Scharfman & Bourouiba 2015;Scharfman et al. 2016;Wei & Li 2017;Balachandar et al. 2020). Understanding the basic hydrodynamics of exhaled droplets carrying viruses is very important for predicting the transportation and destination of droplets and the potential threats related to the spread of infectious diseases, and will provide quantitative guidance for formulating public health policies to alleviate diseases, such as social distancing and facial coverings in various indoor and outdoor environments (Dbouk & Drikakis 2020;Verma, Dhanak & Frankenfield 2020). ...
... While measuring EMFs is conceptually straightforward, accurately measuring and modeling EMFs at depth in the marine environment has been addressed only recently [135,[137][138][139]. Kavet et al. [135] provided quantitative model validation using their measurements for a highvoltage DC cable. ...
... The SeaSPY2 is a reliable high sensitivity magnetometer with unmatched absolute accuracy. It is the only mag that has been integrated inside an unmanned aerial vehicle (AUV) and with a glider [81]. It is also the only longitudinal gradiometer on the market. ...
... A sea trial of the full-scale ship showed a high level of suspended cabin ride comfort. Manhar et al. (2013) [10], [11], from the University of Florida, investigated the performance of seakeeping of WAN-V autonomous vessels with suspension, then results showed that the suspension system minimized heave motions of the boat's cabin. Jialin Han et al. (2015) [12],[13], [14] performed an experimental test of a catamaran model with suspension in waves. ...