In this letter, an isolation improvement method between two closely packed planar inverted-F antennas (PIFAs) is proposed via a miniaturized ground slot with a chip capacitor. The proposed T-shaped ...ground slot acts as a notch filter, and the capacitor is utilized to reduce the slot length. The equivalent circuit model of the proposed slot with the capacitor is derived. The measured isolation between two PIFAs is down to below -20 dB at the whole WLAN band of 2.4 GHz.
This paper proposes a framework that allows 3D freeform manipulation of a face in live video. Unlike existing approaches, the proposed framework provides natural 3D manipulation of a face without ...background distortion and interactive face editing by a user’s input, which leads to freeform manipulation without any limitation of range or shape. To achieve these features, a 3D morphable face model is fitted to a face region in a video frame and is deformed by the user’s input. The video frame is then mapped as a texture to the deformed model, and the model is rendered on the video frame. Because of the high computational cost, parallelization and acceleration schemes are also adopted for real-time performance. Performance evaluation and comparison results show that the proposed framework is promising for 3D face editing in live video.
Since the minimum feature size of dynamic RAM has been down-scaled, several studies have been carried out to determine ways to protect cell data from leakage current in many areas. In the field of ...testing, more appropriate test algorithms are required to detect weak cells with leakage-current sources. In this paper, we propose an interleaving test algorithm that takes into account the equal bit-line stress regardless of the cell location. The proposed test algorithm allows screening of weak cells that cannot hold cell data due to the subthreshold leakage current. During the stress period, the algorithm can also detect other leakage currents. This paper presents the maximum stress differences according to the cell location, and determines the influence of the refresh operation on the maximum stress time. Therefore, this paper suggests a correlation between the refresh and read time to give maximum stress time.
Purpose The purpose of the current study was to examine age-related differences in control of a perception-action coordination skill. We adapted a visuomotor tracking experiment requiring various ...coordination patterns between a limb’s motion and an external signal. Subjects and Methods A total of 12 subjects (6 elderly and 6 young) voluntarily participated in the study. The experimental session consisted of 3 trials for 3 different relative phase patterns: 0°, 90°, and 180°, defined by the relationship between the online visual feedback of the joystick motion and the white dot signal. Results The 0° and 180° tracking patterns were stable compared with the 90° tracking pattern for both age groups. The present results also showed that the elderly subjects were less stable than were young subjects for all tracking patterns. Conclusion The intrinsic coordination dynamics predicted by the Haken-Kelso-Bunz (HKB) mathematical model did not change with age, whereas utilization of visual feedback information declined overall. Further research is needed regarding methods for increasing utilization of visual feedback information from the perspective of rehabilitation.
Purpose The purpose of this study was to gain an understanding of expert therapists' conception of physical therapy knowledge and to examine the application of therapeutic knowledge in clinical ...reasoning.Methods Open and semi-structured interviews were conducted with 13 expert physical therapists working in South Korea. The interviewed therapists had over 7 years of experience in physical therapy with over 5 years being devoted to one specialty. The interviews were thoroughly examined and reviewed, and then the data portions related to clinical reasoning were collected separately and analyzed qualitatively. Result Physical therapy knowledge was found to be generally applied across the entire treatment process from the interpretation and integration of given data, inferential identification and treatment of patients' problem to the consultation and education services to patients, the clinical interaction with colleagues, physicians, and other medical practitioners.Conclusion The results of the present study have implications for clinical practice, physical therapy education, and further research.
In conventional imaging, the geometry of image formation is described by the pinhole camera model, and it allows multiview reconstruction based on the perspective projection. If a light ray passes ...through different media, however, the pin-hole camera model becomes invalid due to refraction, causing changes in direction. In this paper, we present a method for 3D trajectory reconstruction under refraction at a cylindrical surface. In the proposed method, the refractive geometry is represented by a geometric mapping from image points to refracted rays, instead of physically modeling it. 3D points inside the cylindrical surface are estimated by computing intersection points between segments of corresponding refracted rays in multiview. In our experiments, we demonstrate that 3D trajectories of multiple moving objects inside a transparent cylinder, which is filled with water, are successfully recovered using multiple cameras.
Tale types of “Little Red Riding Hood” have survived through oral transmission in various areas including Europe, Africa, and Asia and can even be traced back to 10th century in a written form. This ...research presents quantitative analyses on the folkloric landscape of tales of, or related to, what is best known as Little Red Riding Hood through the Aarne-Thompson-Uther (ATU) index, of which we analyzed ATU 333, ATU 123, and other unspecified types, based on logistic regression and decision tree. The quantitative analyses of the Little Red Riding Hood tale types indicate that ATU 123 alone has the specific story segments that are important to the formation of the tale type and that though diversified in story segments and other details, the three types shared the distinct plot sequence as an important feature. In addition, eight event descriptors and six character and setting descriptors are found to be meaningful factors in the formation of ATU 123. It can be further argued that the plot as an abstraction played a major role in the formation of the tales we have now. Also demonstrated in this paper is that researchers can yield substantial insights into the quantitative results while cross-checking them with qualitative analyses. KCI Citation Count: 0
Lateral flow assays (LFA) enable development of portable and rapid diagnostic kits; however, their capacity to detect low levels of disease markers remains poor. Here, we report a highly sensitive ...pregnancy test kit as a proof of concept, by combining brush-type ligand-coated quantum beads (B-type QBs) and nanobody, which can control the antibody orientation and enhance sensitivity. The brush-type ligand provided excellent dispersion stability and high-binding capacity toward antibody. Fc-binding nanobody increased the antigen-binding capacity of conjugated antibodies on the B-type QBs. To facilitate convenient acquisition of the LFA results, we developed a smartphone-based reader with a 3D-printed optical imaging module, and validated the diagnostic performance of the sensing platform. The pregnancy test kit achieved a 5.1 pg mL−1 limit of detection, corresponding to the levels for early-stage detection of heart disease and malaria. Our LFA application can potentially be expanded to diagnosis other diseases by simply changing the antibody pair in the kit.
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[Poster] Interactive deformation of real objects Jungsik Park; Byung-Kuk Seo; Jong-Il Park
2014 IEEE International Symposium on Mixed and Augmented Reality (ISMAR),
2014-Sept.
Conference Proceeding
This paper presents a method for interactive deformation of a real object. Our method uses a predefined 3D model of a target object for tracking and deformation. A camera pose relative to the target ...object is estimated using 3D model-based tracking. Object region in camera image is obtained by projecting the 3D model onto image plane with the estimated camera pose, and a texture map is extracted from the object region and mapped to the 3D model. Then a texture-mapped model is rendered based on a mesh deformed by user via Laplacian operation. Experimental results demonstrate that our method provides user interactions with 3D real objects on real scenes, not augmented virtual contents.
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