Topic modeling and improvement of image representation for large-scale image retrieval

Tu, N.A.,Dinh, D.L.,Rasel, M.K.,Lee, Y.K. North-Holland [etc ; Elsevier Science Ltd 2016 Information sciences Vol.366 No.-

<P>In this paper, we present a new visual search system for finding similar images in a large database. However, there are a number of challenges regarding the robustness of the image representations and the efficiency of the retrieval framework. To tackle these challenges, we first propose an encoding technique based on soft-assignment of local features to convert an entire image into a single vector, which is a compact and discriminative representation. This encoded vector is suitable for most types of efficient indexing methods to produce an initial result. To compensate for the lack of incorporating geometric and object-related information during the encoding scheme, we then propose a probabilistic topic model to formalize the spatial structure among the local features. Moreover, the topic model allows us to effectively extract the object and background regions from the image. This is performed by a Markov Chain Monte Carlo algorithm for approximate inference. Finally, benefiting from the extracted objects in each image, we present a re-ranking scheme to automatically refine the initial search results. Our proposed retrieval framework has two major advantages: i) an aggregation strategy through soft-assignment improves the discriminative power of the representation, which has a determinative effect on the retrieval precision; and ii) the probabilistic latent topic model enables us to not only gain insight into the spatial structure of the image, but also handle a large variation in the object appearance. The experimental results from four benchmark datasets show that our approach provides competitive accuracy, and runs about ten times faster. Our studies also verify that proposed approach works effectively on large-scale databases of millions of images. (C) 2016 Elsevier Inc. All rights reserved.</P>

노래의 말하기 기능과 민요 전승의 방향 모색

강등학 한국음악사학회 2002 한국음악사학보 Vol.29 No.-

In Korea, the word for folk songs is minyo 民謠, which literally means 'the songs of the people.' As in many other countries, particularly in Korea the phenomenon of folk singing does not show a clear distinction between professional and amateur. Today, however, Korean folk songs would be divided into two kinds according to the singers : one is popular folk songs by professional singers which is commonly known as t'ongsok minyo 通俗民謠; and the other, local or regional folk songs by ordinary people known as hyangt'o minyo 鄕土民謠 or t'osok minyo 土俗民謠. The popular folk songs are known everywhere, to practically every one, and they are frequently recorded by professional singers, whereas the regional folk songs are felt to be specific to a limited geographical area and are sung by ordinary folk living there. The purpose of this paper is to investigate the function and transmission of Korean folk songs based on it's text. This paper deals with such topics as 1) Introduction, 2) The Function and Text of Minyo. 3) The Cultural Meaning of Minyo, 4) The Present State and Transmissions of Minyo, 5) Conclusion. On the basis of examining the text and function of minyo, it is concluded that the telling function of minyo text should be considered and encouraged in terms of the present socio-cultural context.

항이뇨호르몬 부적절분비증을 동반한 결핵성 기흉

강영희,김경수,강창일,정정명,최하진 인제대학교 1983 仁濟醫學 Vol.4 No.3

A case of pulmonary tuberculosis associated with syndrome of inappropriate secretion of antidiuretic hormone in 39-year-old female is presented. Although proper treatment including the closed thoracotomy for her pneumthorax was preformed, generalized convulsion, mental deterioration and polyuria occurred. On laboratory examination, the hyponatremia in her serum and increased urinary excretion of sodium were noticed, accordingly the osmolality of urine was higher than that of plasmas. The syndrome of inappropriate secretion of antidiuretic hormone was diagnosed and treated with intravenovous hypertonic saline and water restriction for 35 days c satisfactory improvment.

Making the Steps Count: Adult Stair Use- Hindsight, Insight & Foresight

Tung CKC(CKC Tung ),Aziz AR(AR Aziz ),Ong STH(STH Ong ),Chia MYH(MYH Chia) 아시아운동학회 2023 Physical Activity Vol.1 No.1

The primary aim of the review is to present a balanced narrative of adult stair use. Healthy young and older adults can expect to reap multiple anthropometric, neuromuscular, physiological, and metabolic health benefits following adherence and accomplishment of stair use that is sustained over 2 to 12 weeks, at least 3 times a week, at a moderateto- vigorous intensity, either within exercise designs of continuous and sustained exercise, or within a timesaving, low volume, and high-intensity interval training set up. There are inherent risks of falls in stair use and participants should adhere to safety tips when navigating stairs in daily life as a form of commute or as intentional exercise. Additional steps for safety and inclusiveness to adult stair use exercise include customizing stair use to suit individual health, fitness, and the exercise context including those with special needs and medical conditions by working with medical practitioners.

A Novel Design of Suspension System for Driver's Seat

Thanh-Tung Luu(Thanh-Tung Luu),박성태(Sung-Tae Park) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_2

A driver's seat can be modeled with a suspension system of spring, mass and damper. To increase the capacity of anti-vibration, the natural frequency should be decreased as low as possible. In this paper, the method to decrease the natural frequency by the potential energy is introduced. In addition, the experiment is done on a small model to prove the theorem.

Impact of yttrium content on the structural and sensing characteristics of YbY<SUB>x</SUB>O<SUB>y</SUB> electrolyte-insulator-semiconductor sensors

Tung-Ming PAN,Tung-Yu WU,Hung-Chun WANG,Jim-Long HER 한국진공학회 2016 한국진공학회 학술발표회초록집 Vol.2016 No.8

Does Quantitative Tibial Ultrasound Predict Low Bone Mineral Density Defined by Dual Energy X-Ray Absorptiometry?

Hakan Tuna,Murat Birtane,Galip Ekuklu,Fikret Cermik,Filiz Tuna,Siranus Kokino 연세대학교의과대학 2008 Yonsei medical journal Vol.49 No.3

Purpose: Efforts for the early detection of bone loss and subsequent fracture risk by quantitative ultrasound (QUS), which is a non-invasive, radiation free, and cheaper method, seem rational to reduce the management costs. We aimed in this study to assess the probable correlation of speed of sound (SOS) values obtained by QUS with bone mineral density (BMD) as measured by the gold standard method, dual energy X-ray absorptiometry (DEXA), and to investigate the diagnostic value of QUS to define low BMD. Materials and Methods: One hundred twenty-two postmenopausal women having prior standard DEXA measurements were included in the study. Spine and proximal femur (neck, trochanter and Ward's triangle) BMD were assessed in a standard protocol by DEXA. The middle point of the right tibia was chosen for SOS measurement by tibial QUS. Results: The SOS values were observed to be significantly higher in the normal BMD (t score >-1) group at all measurement sites except for the lumbar region, when compared with the low BMD group (t score <-1). SOS was negatively correlated with age (r=-0.66) and month since menopause (r=-0.57). The sensitivity, specificity, and positive and negative predictive values for QUS t score to diagnose low BMD did not seem to be satisfactory at either of the measurement sites. Conclusion: Tibial SOS was correlated weakly with BMD values of femur and lumbar spine as measured by DEXA and its diagnostic value did not seem to be high for discriminating between normal and low BMD, at these sites.

Vortioxetine Induced Hypomania: A Case Presentation and Review of the Literature

Ece Buyuksandalyaci Tunc,Serhat Tunc 대한정신약물학회 2022 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.20 No.2

Antidepressant-induced hypomania/mania is a complex issue that can be seen in mood disorders but is not clarified. There are case reports in the literature regarding vortioxetine-induced mania and hypomania; however, there is insufficient data. Here, we aim to present a case of vortioxetine-induced hypomania in a major depressive disorder patient who previously used various antidepressants but did not experience hypomania or mania. Our case is expected to contribute to the literature.

INTERNAL CONFLICTS AND EXTERNAL CRISES : The Political Situation on Mainland China As Viewed from Taiwan

Chang, Chung-tung The Institute for Far Eastern Studies Kyungnam Uni 1977 ASIAN PERSPECTIVE Vol.1 No.1

The changes in Peking since early January 1976 have seemed to be dramatic. Chou En-jai died in January. Hua kuo-feng was suprisingly appointed first as acting premier, and then premier. The Tien An-men incident broke out on April 5. Teng hsiao-Ping fell down once again and lost all of his polotical power. Chu The deceased in July. And, finallt, Mao Tse-tung died on September 9. All the people around the world have been wondered. Why is Huo kua-feng? Where is the power struggle in Peking going? And What will be the impact of the internal changes on the Communist China's external relations? To all these puzzling questions, experts in China affairs all around the globe have made interpretations and predictions, but no one can give definite answers. This paper will deal with the points of view taken by the Chinese on Taiwan. Nonetheless, the author of this paper has no intention to stress that the Chinese experts on Taiwan are wiser than the foreigners to assess all the happenings on mainland China.

Enhancing the sensitivity of graphene/polyurethane nanocomposite flexible piezo-resistive pressure sensors with magnetite nano-spacers

Tung, T.T.,Robert, C.,Castro, M.,Feller, J.F.,Kim, T.Y.,Suh, K.S. Pergamon Press ; Elsevier Science Ltd 2016 Carbon Vol.108 No.-

<P>A robust piezo-resistive nanocomposite flexible sensor has been developed using an innovative combination of materials, i.e., magnetite-decorated graphene/poly(ionic liquid) compatibilized poly(-urethane) (TPU/Fe3O4@RGO-PIL). The transducer has been fabricated by spray layer by layer (sLbL) to structure an original three-dimensional architecture in which: reduced graphene oxide (RGO) platelets are used to build the conducting network, PIL stabilizes this percolated assembly, Fe3O4 NP act as nanospacers between platelets to prevent their stacking and facilitate their switching, and TPU matrix brings cohesion and flexibility to the whole assembly. This strategy results in highly sensitive TPU/Fe3O4@RGO-PIL flexible nanocomposite sensors (high gauge factor in pure compression up to 6.2, exceptionally low threshold pressure 0.5 kPa, Negative Pressure Coefficient), yielding a linear response in a large range of pressures (10-200 kPa), with robust and reproducible piezo-resistive properties (weak hysteresis upon loading unloading cycling, stability of signals up to 100 000 cycles, with 2 ms dephasing). These performances are promising for a variety of applications in flexible and wearable electronics, such as tactile sensors, sensing skins and compressive strain sensors. (C) 2016 Elsevier Ltd. All rights reserved.</P>