Institution
Academia Sinica
Facility•Taipei, Taiwan•
About: Academia Sinica is a facility organization based out in Taipei, Taiwan. It is known for research contribution in the topics: Population & Galaxy. The organization has 52086 authors who have published 65998 publications receiving 1728114 citations. The organization is also known as: Central Research Academy.
Topics: Population, Galaxy, Large Hadron Collider, Gene, Higgs boson
Papers published on a yearly basis
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20 Jan 1975TL;DR: In this paper, the perforations are reduced to submillimetre level so that they themselves will provide sufficient acousticresistance while the low acoustic mass is retained, and so the difficulty of acoustic resis-tances is resolved.
Abstract: Theory and design of perforated panel sound-absorbing constructions are well developed,but the difficulties in adjusting the acoustic resistance part of such constructions curtailtheir usefulness. In this paper, a revolutionary idea is proposed that the perforations areto be reduced to submillimetre level so that they themselves will provide sufficient acousticresistance while the low acoustic mass is retained, and so the difficulty of acoustic resis-tances is resolved. Practice shows that this idea is correct. Such panels are now namedmicroperforated panels. Their features are predictable absorption characteristics, simplestructures and in addition, wide frequency bands of absorption. The elimination of porousmaterials makes the microperforated panel constructions windproof and waterproof, andalso heatproof and even flameproof for short time if they are fabricated with sheet metalor other fireproof materials. Theyefore, the problem of wide band, high coefficient soundabsorber for severe circumstances is solved for good. Acoustical properties and unifiedformulae for perforations of all sizes are derived; the theory and characteristics of themicroperforated panel constructions as well as design charts are given to facilitate the prae-tical design work. Ordinary perforated panel constructions are given as a special case.
297 citations
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TL;DR: In this article, the structure of the M87 jet from milliarcsecond to arcsecond scales is extensively investigated, utilizing the images taken with the European VLBI Network, MERLIN, and Very Long Baseline Array.
Abstract: The structure of the M87 jet, from milliarcsecond to arcsecond scales, is extensively investigated, utilizing the images taken with the European VLBI Network, MERLIN, and Very Long Baseline Array. We discover that the jet maintains a parabolic streamline over a range in size scale equal to 105 times the Schwarzschild radius. The jet then transitions into a conical shape farther downstream. This suggests that the magnetohydrodynamic jet is initially subjected to the confinement by the external gas which is dominated by the gravitational influence of the supermassive black hole. Afterward the jet then freely expands with a conical shape. This geometrical transition indicates that the origin of the HST-1 complex may be a consequence of the overcollimation of the jet. Our result suggests that when even higher angular resolution is provided by a future submillimeter very long baseline interferometry experiments, we will be able to explore the origin of active galactic nucleus jets.
297 citations
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TL;DR: In this article, the authors proposed and discussed a type of new robust estimators for covariance/correlation matrices and principal components via projection-pursuit techniques, which are of both rotational equivariance and high breakdown point.
Abstract: This article proposes and discusses a type of new robust estimators for covariance/correlation matrices and principal components via projection-pursuit techniques. The most attractive advantage of the new procedures is that they are of both rotational equivariance and high breakdown point. Besides, they are qualitatively robust and consistent at elliptic underlying distributions. The Monte Carlo study shows that the best of the new estimators compare favorably with other robust methods. They provide as good a performance as M-estimators and somewhat better empirical breakdown properties.
297 citations
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TL;DR: A culture device is used to sieve out a homogeneous population of cells (termed size‐sieved [SS] cells) from bone marrow aspirates that had the capacity for self‐renewal and the multilineage potential to form bone, fat, and cartilage, and satisfy the characteristics of MSCs.
Abstract: Bone marrow mesenchymal stem cells (MSCs) have the capacity for renewal and the potential to differentiate into multiple lineages of mesenchymal tissues. In the laboratory, MSCs have the tendency to adhere to culture dish plastic and are characterized by fibroblastic morphology, but possess no specific markers to select them. To isolate and purify MSCs from bone marrow, we use a culture device-a plastic culture dish comprising a plate with 3-microm pores-to sieve out a homogeneous population of cells (termed size-sieved [SS] cells) from bone marrow aspirates. SS cells that adhered to the upper porous plate surface were a relatively homogeneous population as indicated by morphology and other criteria, such as surface markers. They had the capacity for self-renewal and the multilineage potential to form bone, fat, and cartilage, and satisfy the characteristics of MSCs. In addition, if all the cells from each passage had been plated and cultured in our defined conditions, over 10(14) SS cells would have been obtained from each 10-ml aspirate in 15 additional weeks of culture. This technically simple method leads to an efficient isolation and purification of cells with the characteristics of MSCs.
297 citations
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TL;DR: Findings suggest not only that personal storytelling operates as a routine socializing practice in widely different cultures but also that it is already functionally differentiated by 2,6.
Abstract: The goal of this study was to determine how personal storytelling functions as a socializing practice within the family context in middle-class Taiwanese and middle-class European American families. The data consist of more than 200 naturally occurring stories in which the past experiences of the focal child, aged 2,6, were narrated. These stories were analyzed at 3 levels: content, function, and structure. Findings converged across these analytic levels, indicating that personal storytelling served overlapping yet distinct socializing functions in the 2 cultural cases. In keeping with the high value placed on didactic narrative within the Confucian tradition, Chinese families were more likely to use personal storytelling to convey moral and social standards. European American families did not treat stories of young children's past experiences as a didactic resource but instead employed stories as a medium of entertainment and affirmation. These findings suggest not only that personal storytelling operates as a routine socializing practice in widely different cultures but also that it is already functionally differentiated by 2,6.
297 citations
Authors
Showing all 52129 results
Name | H-index | Papers | Citations |
---|---|---|---|
Yi Chen | 217 | 4342 | 293080 |
Jing Wang | 184 | 4046 | 202769 |
Jie Zhang | 178 | 4857 | 221720 |
Hyun-Chul Kim | 176 | 4076 | 183227 |
Yang Yang | 164 | 2704 | 144071 |
Yuh Nung Jan | 162 | 460 | 74818 |
Jongmin Lee | 150 | 2257 | 134772 |
Hui-Ming Cheng | 147 | 880 | 111921 |
Teruki Kamon | 142 | 2034 | 115633 |
Jian Yang | 142 | 1818 | 111166 |
I. V. Gorelov | 139 | 1916 | 103133 |
S. R. Hou | 139 | 1845 | 106563 |
Kaori Maeshima | 139 | 1850 | 105218 |
Jiangyong Jia | 138 | 1173 | 91163 |
Kenneth Bloom | 138 | 1958 | 110129 |