Young-Hoon Jung

Flexible piezoelectric acoustic sensors have been developed to generate multiple sound signals with high sensitivity, shifting the paradigm of future voice technologies. Speech recognition based on advanced acoustic sensors and optimized machine learning software will play an innovative interface for artificial intelligence (AI) services. Collaboration and novel approaches between both smart sensors and speech algorithms should be attempted to realize a hyperconnected society, which can offer pe

Abstract Flexible piezoelectric sensors have been spotlighted as an essential human–machine interface (HMI) by obtaining high‐quality data from omnipresent biomechanical inputs. Because human voice is the most intuitive bio‐signal among them, flexible piezoelectric acoustic sensors (f‐PAS) have a potential to shift the paradigm of HMI technologies. Despite the reported outstanding performance such as high sensitivity and speaker recognition accuracy, the theoretical investigation of f‐PAS has be

This paper describes the elastic response of a block sample of compressible Chicago glacial clay under a variety of stresses and its relationship with the deformation characteristics at relatively large strains. The elastic shear stiffness was obtained from bender element tests during consolidation and shearing in drained triaxial stress probe tests. An empirical correlation was established based on the elastic shear stiffness in a preyield condition. By comparing the empirical correlation with

In article number 1904020, Keon Jae Lee and co-workers review recent developments in speech recognition, in terms of flexible piezoelectric materials, self-powered sensors, machine-learning algorithms, and speaker recognition. Such systems will play an innovative interface in artificial intelligence services.

최인훈 소설에는 반복적인 요소가 많다. 동일한 상황이나 동일한 문구, 유사한 장면의 반복 등 개별 작품에 나타나는 반복적 요소뿐 아니라 작품들 사이에서 나타나는 반복적 요소도 많다. 이 글은 최인훈 소설 전반에 걸쳐 두루 발견되는 반복의 구조적 특징을 지적하고, 반복 속에 내재한 향락적 요소와 반복을 통해 얻고자 하는 바에 대해 살펴보았다. 이 과정에서 확인할 수 있었던 것은 다음과 같다. 최인훈 소설의 반복은 타자의 오인을 중심으로 구조화되어 있다. 최인훈 소설에서 반복의 중심에 있는 것은 타자의 오인이다. 타자의 오인이 되풀이되고, 이 상황을 모면하기 위한 소설 속 주인공의 노력이 계속되며, 바로 이것이 최인훈 소설의 반복에서 핵심적인 자리를 차지하고 있다. 반복되는 타자의 오인은 고통스럽고 불쾌한 경험이지만, 역설적이게도 여기에는 쾌락적인 요소 또한 존재한다. 반복되는 타자의 오인은 이른바 향락의 대상이 되고 있는데, 이는 타자의 오인 속에 정체화된 모습을 만족스러워하거나 반복

Abstract Aims/hypothesis One of the critical mechanisms determining creep in granular materials is the breakage of soil particles. This study aims at evaluating the time-dependent creep deformation of calcareous sand at low effective stress conditions. Methods K 0 creep tests were performed for both calcareous and silica sands at low stresses of 65 and 120 kPa, and the results of creep tests were compared with the results of constant rate of strain (CRS) tests at high stress levels up to 12 MPa.

This paper describes patterns of nonlinear shear stiffness degradation with respect to the stress history of clay. An experimental study using undrained triaxial compression tests was conducted on specimens cut from reconstituted clay samples of kaolinite. The nonlinear pattern of stiffness degradation was analyzed within the frameworks of both the conventional overconsolidation ratio (OCR) and the stress path rotation angle. The experimental data were subsequently interpreted based on the conce