You can discover more about a person in an hour of play than in a year of conversation (Plato). For the past 6-7 years, I have been examining ways to leverage good video games to assess and support important student competencies, especially those that are not optimally measured by traditional assessment formats. The term "stealth assessment" refers to the process of embedding assessments deeply...

A key untapped feature of game-based learning environments is their capacity to generate a rich stream of fine-grained learning interaction data. The learning behaviors captured in these data provide a wealth of information on student learning, which stealth assessment can utilize to unobtrusively draw inferences about student knowledge to provide tailored problem-solving support. In this paper...

A challenge regarding the design of nanocarriers for drug delivery is to prevent their recognition by the immune system. To improve the blood residence time and prevent their capture by organs, nanoparticles can be designed with stealth properties using polymeric coating. In this study, we focused on the influence of surface modification with polyethylene glycol and/or mannose on the stealth be...

Background A pulse oximeter is one of the most important monitors to save patients undergoing anesthesia and monitored sedation. The authors report a case of orthopedic surgery, in which interference of pulse oximetry occurred when using a Stealth Station™ navigation system (Medtronic Sofamor Danek, Memphis, TN). Applying a black plastic shield (Masimo Ambient Shield: Masimo Corporation, Irvine...

Liposomes are spherically shaped phospholipid bilayers that used to encapsulate hydrophilic or lipophilic drugs. To have efficient drug delivery by a liposome, it should be able deliver the specific binding site, where can affect target. However, sometimes, due untimely release, this goal cannot achieved. Therefore, permeation rate of through liposomal membrane is important, as affects drug’s r...

The dynamics of liposome solubilization was monitored by dynamic light scattering and optical microscopy. A newly designed Y-shape microchannel connected to a room was incorporated into a microchip and the reaction processes of the liposome suspension and surfactant solution were observed in the room after mixing the two fluids and stopping the flow. By using this microchip, we succeeded in r...

We developed selective transfection of single particle sensor into a specific cell by optically controlled cell immobilization and membrane fusion of liposome for intracellular measurement. The particle was encapsulated in the liposome using packaging based on multi-layering method. The liposomes contain 1,3,3-Trimethylindolino-6'nitrobenzopyrylospiran (SP) that controls the surface potential o...

Nanoliposome can be designed as a drug delivery carrier to improve the pharmacological and therapeutic properties of drug administration. (188)Re-labeled nanoliposomes are useful for diagnostic imaging as well as for targeted radionuclide therapy. In this study, the in vivo nuclear imaging, pharmacokinetics and biodistribution of administered nanoliposomes were investigated as drug and radionuc...

OF THE DISSERTATION Automated Detection and Containment of Stealth Attacks on the Operating System Kernel

Cyclodextrins (CDs) can form polypseudorotaxanes (PPRXs) with drugs or drug carriers possessing linear polymers such as polyethylene glycol (PEG). On the other hand, PEGylated liposomes have been utilized as a representative anticancer drug carrier. However, little is known about the formation of CD PPRX with PEGylated liposome. In the present study, we first report the formation of CD PPRX wit...