The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Jeno Kisch - One of the best experts on this subject based on the ideXlab platform.
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intraoral Digital impression Technique compared to conventional impression Technique a randomized clinical trial
Journal of Prosthodontics, 2016Co-Authors: Björn Gjelvold, Eva Karin Korduner, Bruno Ramos Chrcanovic, Ingrid Collinbagewitz, Jeno KischAbstract:Purpose To compare Digital and conventional impression Techniques in a randomized clinical trial; specifically, procedure times, patient-centered outcomes, and clinical evaluation of the restorations. Materials and Methods Forty-two patients in need of tooth-supported single crowns and/or fixed partial prostheses up to six units were randomly allocated to one of the impression Techniques. The procedure times, dentists’ and patients’ assessments using a visual analog scale (VAS), and clinical evaluation of the restorations were compared between the two groups. Results The mean total procedure times for Digital and conventional impression Technique were 14:33 ± 5:27 and 20:42 ± 5:42, respectively (p < 0.0001). Mean impression times were 7:33 ± 3.37 and 11:33 ± 1.56, respectively (p < 0.0001). Mean VAS scores for the dentist's assessment of difficulty (0 to 100; very difficult = 100) were 24.00 ± 18.02 and 48.02 ± 21.21, respectively (p < 0.0001). Mean VAS scores for the patients’ assessment of discomfort (0 to 100; very discomforting = 100) was 6.50 ± 5.87 and 44.86 ± 27.13, respectively (p < 0.0001). Occlusal contacts showed a better result for the Digital Technique. Conclusion The results of this study demonstrated that the Digital Technique was more efficient and convenient than the conventional impression Technique.
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Intraoral Digital Impression Technique Compared to Conventional Impression Technique. A Randomized Clinical Trial
Journal of Prosthodontics, 2016Co-Authors: Björn Gjelvold, Eva Karin Korduner, Ingrid Collin-bagewitz, Bruno Ramos Chrcanovic, Jeno KischAbstract:© 2015 by the American College of Prosthodontists Purpose: To compare Digital and conventional impression Techniques in a randomized clinical trial; specifically, procedure times, patient-centered outcomes, and clinical evaluation of the restorations. Materials and Methods: Forty-two patients in need of tooth-supported single crowns and/or fixed partial prostheses up to six units were randomly allocated to one of the impression Techniques. The procedure times, dentists’ and patients’ assessments using a visual analog scale (VAS), and clinical evaluation of the restorations were compared between the two groups. Results: The mean total procedure times for Digital and conventional impression Technique were 14:33 ± 5:27 and 20:42 ± 5:42, respectively (p < 0.0001). Mean impression times were 7:33 ± 3.37 and 11:33 ± 1.56, respectively (p < 0.0001). Mean VAS scores for the dentist's assessment of difficulty (0 to 100; very difficult = 100) were 24.00 ± 18.02 and 48.02 ± 21.21, respectively (p < 0.0001). Mean VAS scores for the patients’ assessment of discomfort (0 to 100; very discomforting = 100) was 6.50 ± 5.87 and 44.86 ± 27.13, respectively (p < 0.0001). Occlusal contacts showed a better result for the Digital Technique. Conclusion: The results of this study demonstrated that the Digital Technique was more efficient and convenient than the conventional impression Technique.
Jinsung Choi - One of the best experts on this subject based on the ideXlab platform.
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Performance enhancement of linear power amplifier employing Digital Technique
2008 IEEE International Symposium on Circuits and Systems, 2008Co-Authors: Jinsung ChoiAbstract:Current wireless communication systems require highly efficient and linear power amplifiers. However, there is a trade-off relationship between the efficiency and the linearity. To enhance the performance over the barrier limited by the trade-off, Digital control and Digital error correction for linearity of a power amplifier become hot research items. We will introduce the Digital Techniques to enhance performances. It includes the RF transmitter architecture controlled by Digital circuit such as a delta-sigma modulator, and the Digital feedback pre-distortion Technique, which linearizes the highly efficient saturated power amplifiers.
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ISCAS - Performance enhancement of linear power amplifier employing Digital Technique
2008 IEEE International Symposium on Circuits and Systems, 2008Co-Authors: Jinsung ChoiAbstract:Current wireless communication systems require highly efficient and linear power amplifiers. However, there is a trade-off relationship between the efficiency and the linearity. To enhance the performance over the barrier limited by the trade-off, Digital control and Digital error correction for linearity of a power amplifier become hot research items. We will introduce the Digital Techniques to enhance performances. It includes the RF transmitter architecture controlled by Digital circuit such as a delta-sigma modulator, and the Digital feedback pre-distortion Technique, which linearizes the highly efficient saturated power amplifiers.
Björn Gjelvold - One of the best experts on this subject based on the ideXlab platform.
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intraoral Digital impression Technique compared to conventional impression Technique a randomized clinical trial
Journal of Prosthodontics, 2016Co-Authors: Björn Gjelvold, Eva Karin Korduner, Bruno Ramos Chrcanovic, Ingrid Collinbagewitz, Jeno KischAbstract:Purpose To compare Digital and conventional impression Techniques in a randomized clinical trial; specifically, procedure times, patient-centered outcomes, and clinical evaluation of the restorations. Materials and Methods Forty-two patients in need of tooth-supported single crowns and/or fixed partial prostheses up to six units were randomly allocated to one of the impression Techniques. The procedure times, dentists’ and patients’ assessments using a visual analog scale (VAS), and clinical evaluation of the restorations were compared between the two groups. Results The mean total procedure times for Digital and conventional impression Technique were 14:33 ± 5:27 and 20:42 ± 5:42, respectively (p < 0.0001). Mean impression times were 7:33 ± 3.37 and 11:33 ± 1.56, respectively (p < 0.0001). Mean VAS scores for the dentist's assessment of difficulty (0 to 100; very difficult = 100) were 24.00 ± 18.02 and 48.02 ± 21.21, respectively (p < 0.0001). Mean VAS scores for the patients’ assessment of discomfort (0 to 100; very discomforting = 100) was 6.50 ± 5.87 and 44.86 ± 27.13, respectively (p < 0.0001). Occlusal contacts showed a better result for the Digital Technique. Conclusion The results of this study demonstrated that the Digital Technique was more efficient and convenient than the conventional impression Technique.
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Intraoral Digital Impression Technique Compared to Conventional Impression Technique. A Randomized Clinical Trial
Journal of Prosthodontics, 2016Co-Authors: Björn Gjelvold, Eva Karin Korduner, Ingrid Collin-bagewitz, Bruno Ramos Chrcanovic, Jeno KischAbstract:© 2015 by the American College of Prosthodontists Purpose: To compare Digital and conventional impression Techniques in a randomized clinical trial; specifically, procedure times, patient-centered outcomes, and clinical evaluation of the restorations. Materials and Methods: Forty-two patients in need of tooth-supported single crowns and/or fixed partial prostheses up to six units were randomly allocated to one of the impression Techniques. The procedure times, dentists’ and patients’ assessments using a visual analog scale (VAS), and clinical evaluation of the restorations were compared between the two groups. Results: The mean total procedure times for Digital and conventional impression Technique were 14:33 ± 5:27 and 20:42 ± 5:42, respectively (p < 0.0001). Mean impression times were 7:33 ± 3.37 and 11:33 ± 1.56, respectively (p < 0.0001). Mean VAS scores for the dentist's assessment of difficulty (0 to 100; very difficult = 100) were 24.00 ± 18.02 and 48.02 ± 21.21, respectively (p < 0.0001). Mean VAS scores for the patients’ assessment of discomfort (0 to 100; very discomforting = 100) was 6.50 ± 5.87 and 44.86 ± 27.13, respectively (p < 0.0001). Occlusal contacts showed a better result for the Digital Technique. Conclusion: The results of this study demonstrated that the Digital Technique was more efficient and convenient than the conventional impression Technique.
J Vilain - One of the best experts on this subject based on the ideXlab platform.
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a direct Digital Technique implementation of general discontinuous pulse width modulation strategy
IEEE Transactions on Industrial Electronics, 2011Co-Authors: J Hobraiche, Nicolas Patin, Guy Friedrich, J VilainAbstract:This paper presents direct Digital Technique-generalized discontinuous pulse width modulation (PWM) - a new implementation method for an optimal discontinuous PWM (DPWM) in terms of switching losses of the inverter on an embedded system. At each sampling period, an optimal choice is done in order to clamp one of the three half-bridges. Its advantages compared to classic ones (DPWM) are as follows: needless to know the load power factor, operational under steady-state and dynamic operating conditions, and low computation time. The proposed algorithm is then verified by simulation. Experimental results, based on a resistance-inductance load and a starter-generator application, are provided to show its effectiveness.
C.-h. Jeong - One of the best experts on this subject based on the ideXlab platform.
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A combined analog-Digital Technique for normalizing video signals for the detection of moving objects
[Proceedings] ICASSP-92: 1992 IEEE International Conference on Acoustics Speech and Signal Processing, 1992Co-Authors: G.w. Donohoe, C.-h. JeongAbstract:Some applications of machine vision, such as surveillance and traffic monitoring, require a system that operates without human adjustment under changing scene conditions. Such a system should adaptively condition the analog video signal to maximize the detection of interesting events. An information measure based on the probability of detection is introduced, and an adaptive scheme to manipulate the analog signal to optimize the information measure and maximize the likelihood of detection is presented.
