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In order to assemble biological cells for tissue engineering, fast and reliable manipulation is necessary. In this paper, we present a high-speed and precise manipulation system using two-fingered microhand. This system is a fully automated pick-and-place operation of microspheres that can assemble several objects at high speed. To achieve proposed system, special releasing method and vision-based...
The reliable manipulation of micro-objects has been a still difficult work in scientific and technical field due to scale effects. This paper presents two types of release methods, using local stream and inertia force generated by 3D high speed motion of an end effector, for releasing and accurate positioning of biological cells. Two-fingered microhand driven by DC motors for both end effectors and...
As governments and enterprises adopt COTS-based information systems, COTS components must be selected to satisfy the security requirements of applied systems. However, the selection of security components is a trade-off between the confidence level in the components and the cost of replacing components. The higher confidence required of the security components leads to a higher cost in the selection...
Improving detection accuracy and efficiency is crucial to the effectiveness of an intrusion detection system. In this paper, a novel intrusion detection system based on hierarchical approach that integrates a Random Forest based misuse detection model and a Self-Organizing Map based anomaly detection model is proposed for improving detection rates with low computational cost. In the proposed detection...
This paper presents an active release method of microobject for the improvement of the position accuracy after releasing by using 3D high speed motions of an end effector. In the micro manipulation, the release task is the challenge work due to adhesion forces. To overcome the adhesion force and to place microobject accurately on the desired location, in this paper, we propose a high speed motion...
This paper presents a contactless release method of microobject using local stream generaged by high speed motions of an end effector. In the micro manipulation, the release task is a challenge work due to adhesion forces. To overcome the adhesion force and to place microobject on the desired location, in this paper, we apply local stream using high speed motion controlled by a parallel link. Two...
We explore the feasibility of ‘radiative transfer theory’ for simulation of scattering media by comparing accuracy and simulation time with Monte-Carlo simulation. Simulation based on ‘radiative transfer theory’ agrees very well with Monte-Carlo simulation with about 1/20 simulation time. Hence, ‘radiative transfer theory’ is effective basis for trans-scale simulation and fast optimization of OLEDs...
Scatter-embedded substrate is a powerful platform for improving light extraction efficiency in OLED lighting. In this work, we propose trans-scale optical simulation for OLEDs involving scattering substrates. This simulation combines rigorous dipole model analyzing thin-film stacks with Monte-Carlo simulation based on Henyey-Greenstein phase function for tracing rays encountered with specific size...
Several nanoscale patterns were fabricated over a quartz substrate coated with an UV resin for cell culture. Holography lithography and nanoimprint lithography were applied for the development of the original patterns and replicas. Human osteoblasts were cultured over the patterned surface and showed interesting features including long extension of filopodia and lamellipodium formation.
In this paper, we propose a hybrid feature selection method in which Principal Components Analysis is combined with optimized k- Means clustering technique. Our approach hierarchically reduces the redundancy of features with high explanation in PCA for choosing a good subset of features critical to improve the performance of classifiers. Based on this result, we evaluate the performance of intrusion...
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