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Recent advances in program synthesis offer means to automatically debug student submissions and generate personalized feedback in massive programming classrooms. When automatically generating feedback for programming assignments, a key challenge is designing pedagogically useful hints that are as effective as the manual feedback given by teachers. Through an analysis of teachers' hint-giving practices...
Microbubbles (MBs) are widely used in clinical site as contrast agents in ultrasound imaging due to its eminent responsiveness to several MHz band. In recent years, ultrasound drug delivery system (DDS) using MBs are widely researched to achieve selective medication to the targeted diseased part. In the condition of high number density of bubbles to enhance the performance of DDS, it is essentially...
Microbubbles (MBs) are widely used in clinical site as contrast agents in ultrasound imaging due to its eminent responsiveness to several MHz band ultrasound. In recent years, ultrasound drug delivery system (DDS) using MBs are widely researched to achieve selective medication to the targeted diseased part. In the condition of high number density of bubbles to enhance the performance of DDS, it is...
The use of stimulated Raman scattering (SRS) for Kerr comb generation is very attractive because it allows us to generate long-wavelength light, particularly in the mid-infrared wavelength regime, where the wavelengths are useful for sensing applications. Recently, the generation of comb light and the interaction between transverse modes with the SRS process using a crystalline microcavity have been...
High quality factor (Q) whispering-gallery mode (WGM) microcavities have been investigated for nonlinear optics, because they provide strong light confinement. Although the third-order nonlinear susceptibility X(3) is small, third-order nonlinear effects, such as four-wave mixing (FWM), stimulated Raman scattering (SRS), and third-harmonic generation (THG), are pronounced in a high-Q microcavity....
A high quality factor (Q) microcavity is an efficient device for generating a Kerr comb via a four-wave mixing process inside the cavity [1]. Kerr comb platforms are candidates for such applications as optical frequency combs, optical communications, arbitrary waveform generation, and microwave oscillators. Although a silica toroid microcavity (Fig. 1(a)) also has good characteristics for Kerr comb...
The generation of an optical Kerr comb in whispering gallery mode (WGM) microcavities has been investigated for applications in frequency metrology, precise spectroscopy, and signal processing. Optical Kerr combs are generated via parametric frequency conversion, thus a high quality factor (Q) is essential for lowering the threshold power, and this can be achieved with crystalline microcavities in,...
Automatic program transformation tools can be valuable for programmers to help them with refactoring tasks, and for Computer Science students in the form of tutoring systems that suggest repairs to programming assignments. However, manually creating catalogs of transformations is complex and time-consuming. In this paper, we present REFAZER, a technique for automatically learning program transformations...
Toroid microcavities tend to excite cavity optomechanical vibration, which makes Kerr comb generation complicated. We demonstrated experimentally that transform limited pulses are obtained without optomechanical noise by controlling the pump frequency.
We investigated the effect of the interaction between transverse modes on Kerr comb generation. We expanded the Lugiato-Lefever model to consider the effect of cross-phase modulation. We found XPM can work for forming dual solitons.
This paper proposes statistical analysis of phase-only correlation functions between two signals with stochastic phase-spectra. We derive the expectation and variance of the phase-only correlation functions assuming phase-spectra of two input signals to be bivariate probability variables. As a result, we give expressions for the expectation and variance of phase-only correlation functions in terms...
Playing with Robot has become an effective therapy method for children with Autism Spectrum Disorders (ASD). In this study, we explore the prosocial behaviour of children with ASD through a musical play with a humanoid robot, NAO. The children participated in two different play platforms, Touch Body and Dancing with Me. The game scores and close proximity are measured to assess their understanding...
A desktop force feedback device is able to render reaction force of virtual objects. However, the desktop type limits operator's motion. In contrast, a wearable force feedback device allows us to interact with virtual objects while moving in virtual space. In this study, we have developed a 1-DOF wearable force feedback device with MR brake and pneumatic artificial muscles. These actuators are lightweight,...
Recently immunotherapy using therapeutic cells has attracted attention. Because the cells injected in human body disperse through the blood stream, there is a problem that small amount reaches to the diseased area. So we intend for in vivo cell delivery system, which is realized by attracting nanobubbles on the surface of cells to reduce its density for dynamic control of cells under ultrasound emission...
Optical Kerr comb source on chip by using a whispering gallery mode (WGM) microcavity is gaining attention due to the small size and low power. The generation of Kerr comb is based on a cascaded four-wave mixing (FWM), and the system exhibit a pulsed output when the generated comb is in a mode-locked state. The time-domain picture of the mode-locking is explained by circulating a soliton pulse in...
A small optical cavity with a high Q is attractive for optical nonlinear applications. We discuss various applications that utilize or are affected by cavity opto-mechanical coupling.
In the rivers area, it has become frequent problems with illegal dumping, flood, inundation, and damage. We need the support and understanding of the problems quickly. Future measures also require. River basin is a wide range. Only the river administrator is difficult to perform adequate monitor and response. River Information Management System was developed by the collaboration with the Ministry...
The coding performance of the normative encoder of the JPEG XT in profile is analyzed and the problem on the encoder is summarized in this paper. It is pointed out that there is a mismatch in the handling of the quantization error between the normative encoder and the standard decoder. To avoid this problem, an improved structure has been proposed with consideration of the mismatch. The experimental...
Communicative robots have studied as a mediator to obtain the information in Human-robot interaction research field. The study in this paper presents that people have emotional feelings during interacting with robot by the comparison experiment conducted as two assignment, ifbot-assignment and web-assignment. 62 subjects are participated in both assignments. Ifbot assignment is to get a particular...
Software documentation plays an important role in sharing the knowledge behind source code between distributed programmers. Good documentation makes source code easier to understand; on the other hand, developers have to constantly update the documentation whenever the source code changes. Developers will benefit from an automated tool that simplifies keeping documentation up-to-date and facilitates...
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