http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Determining the Optimal Number of Signal Clusters Using Iterative HMM Classification
Ernest, Duker Junior,Kim, Yoon Joong The Institute of Internet 2018 International journal of advanced smart convergenc Vol.7 No.2
In this study, we propose an iterative clustering algorithm that automatically clusters a set of voice signal data without a label into an optimal number of clusters and generates hmm model for each cluster. In the clustering process, the likelihood calculations of the clusters are performed using iterative hmm learning and testing while varying the number of clusters for given data, and the maximum likelihood estimation method is used to determine the optimal number of clusters. We tested the effectiveness of this clustering algorithm on a small-vocabulary digit clustering task by mapping the unsupervised decoded output of the optimal cluster to the ground-truth transcription, we found out that they were highly correlated.
Preparing for the Artificial Intelligence Revolution in Nuclear Cardiology
Ernest V. Garcia 대한핵의학회 2023 핵의학 분자영상 Vol.57 No.2
A major opportunity in nuclear cardiology is the many significant artificial intelligence (AI) applications that have recentlybeen reported. These developments include using deep learning (DL) for reducing the needed injected dose and acquisitiontime in perfusion acquisitions also due to DL improvements in image reconstruction and filtering, SPECT attenuation correctionusing DL without need for transmission images, DL and machine learning (ML) use for feature extraction to definemyocardial left ventricular (LV) borders for functional measurements and improved detection of the LV valve plane andAI, ML, and DL implementations for MPI diagnosis, prognosis, and structured reporting. Although some have, most ofthese applications have yet to make it to widespread commercial distribution due to the recency of their developments, mostreported in 2020. We must be prepared both technically and socio-economically to fully benefit from these and a tsunami ofother AI applications that are coming.
( Ernest Takyi ),조정현,김광주 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
Suspension melt crystallization is known for its potential to separate close boiling organic isomers and also to treat waste effluents. The ease of separation of residual melt from the crystals through filtration or washing is very much depended on the crystal properties such as the size, shape and CSD. Ostwald ripening is the most extensive way to improve crystal properties. This process generally occurs at very low supersaturation and in practically isothermal systems. However the process is slow. In this paper, the method has been exploited in a new way; in the course of ice ripening, fixed amounts of superheated melt is continuously added to the crystal suspension thus causing a melting of fines below the critical size and recrystallization of un-melted ice. Through this process, ice slurry produced from 10000mg/l cod redwater had ice crystal size improved from 200μm to 700μm in 7hrs of holding time. The study further highlights the effect of solid fraction, degree of added melt superheat and rate of addition of melt on the rate of the ripening process. After crystal growth, the purity of the crystals was found as functions of growth rate, Crystal size, and initial impurity concentration.
A Dynamic Modeling of Vertical Rail Deflection in Concrete Slab Track for High Speed Trains
Ernest Nsabimana,Chan-Yong Choi(최찬용),Young-Hoon Jung(정영훈) 한국철도학회 2013 한국철도학회 학술발표대회논문집 Vol.2013 No.5
Most of developed and many developing countries in the world are preparing to update their existing lines as well as to create new high speed railway routes. Such high speeds make the response of railway track become dynamic. In this paper, a finite element modeling is attempted to simulate time domain dynamic behavior of the two-dimensional slab track system. A vehicle wheel is simply modeled as a sprung mass with two reference points in which the wheel weight is applied at one end and the equivalent vehicle weight is assigned to the other end. The contact between a reference point and the rail is nonlinearly simulated. The numerically predicted vertical rail displacements show a remarkable influence of train velocity on the concrete track system.
Ernest Billings (Billy) Brewster 불교학연구회 2021 불교학연구 Vol.66 No.-
Within the Abhidharma literature, the doctrinal discussions on momentariness composed by the fifth-century C.E. Indic theorist, Saṅghabhadra, and rendered into Chinese by the pilgrim and scholar-monk, Xuanzang (602?–667 C.E.), stand as rigorous and detailed defenses of the Buddhist tenet of momentariness. This paper examines several passages on the doctrine of momentariness that are extant only within Xuanzang’s Chinese translations of two treatises by Saṅghabhadra, the Treatise Conforming to the Correct Logic of Abhidharma (Sanskrit, hereafter Skt. *Abhidharmanyāyānusāraśāstra; Chinese, hereafter Chi. Apidamo shun zhengli lun 阿毘達磨順正理論) and the Treatise Clarifying the Treasury of Abhidharma Tenets (Skt.*Abhidharmasamayapradīpikāśāstra; Chi. Apidamo zang xianzong lun 阿毘達磨顯宗論). In these masterworks, Saṅghabhadra uses the Abhidharma theory of the “conditioned factor” (Skt. saṃskṛta-dharma; Chi. youwei fa 有爲法)—the discrete entity that comes into being as the result of the myriad of “causes and conditions” (Skt. hetu-pratyaya; Chi. yin-yuan 因緣) that precede it—to construct a philosophical explanation for change as a pervasive and invariable feature of reality. In their meticulous translations and commentaries on these texts, Xuanzang and his Tang Dynasty disciples examine the four “stages” (Skt. avasthā; Chi. fenwei 分位) of a conditioned factor and reconsider the arguments enlisted by Saṅghabhadra to buttress the proposition that a conditioned factor activates another of its own kind in the moment that follows its cessation. This paper uses a source criticism research method to illustrate how several understudied translations of the Abhidharma works of Saṅghabhadra by Xuanzang—and the commentaries on these texts by his Tang disciples—contribute to the theoretical basis of the doctrine of momentariness within Chinese Buddhism.
The structural performance of arches made of few vossoirs with dry-joints
Ernest Bernat-Maso,Lluís Gil,Jordi Marcé-Nogué 국제구조공학회 2012 Structural Engineering and Mechanics, An Int'l Jou Vol.44 No.6
This work approaches the structural performance of masonry arches that have a small ratio between number of vossoirs and span length. The aim of this research is to compare and validate three different methods of analysis (funicular limit analysis F.L.A., kinematic limit analysis K.L.A. and plane stress Finite Element Analysis F.E.A.) with an experimental campaign. 18 failure tests with arches of different shapes and boundary conditions have been performed. The basic failure mechanism was the formation of enough hinges in the geometry. Nevertheless, in few cases, sliding between vossoirs also played a relevant influence. Moreover, few arches didn’t reach the collapse. The FLA and KLA didn't find a solution close to the experimental values for some of the tests. The low number of vossoirs and joints become a drawback for an agreement between kinematic mechanism, equilibrium of forces and geometry constraints. FLA finds a lower bound whereas KLA finds an upper bound of the ultimate load of the arch. FEA is the most reliable and robust method and it can reproduce most of the mechanism and ultimate loads. However, special care is required in the definition of boundary conditions for FEA analysis. Scientific justification of the more suitability of numerical methods in front of classic methods at calculating arches with a few vossoirs is the main original contribution of the paper.