1,721,847 research outputs found
Helen Mullerow and Cao Wei Xie, 1995
No full textHelen Mullerow and Cao Wei Xie are two of the eighty students who received Certificates of Attainment or the Certificate of General Education jointly run by the Access Education Department, TAFE Division and Hawthorn Community House. Left to Right: Helen Mullerow, Student, General Education Certificate; Cate Thompson, Coordinator, Access Education Adult Literacy and Cao Wei Xie, student, General Education Certificate. Swinburne Staff News 2 February 1995
High-speed silicon photonics modulators for the 2 μm wavelength
No full textThe 2 µm communication windows has established itself amongst other solutions to address the capacity crunch. The 2 µm window offers three benefits: predicted ultra low loss windows of hollow-core fibres, optical amplification gain windows of thulium doped amplifier and compatibility with the silicon photonics silicon-oninsulator platform. We demonstrate state of the art high-speed modulators based on a 220 nm siliconon-insulator platform operating at a wavelength of 1950 nm using the free carrier plasma dispersion effect in silicon. The Mach-Zehnder interferometer carrierdepletion modulator has a modulation efficiency (Vπ·Lπ) of 2.89 V·cm at 4 V reverse bias. The insertion loss is 5.25 dB. It operates at a data rate of 25 Gbit/s OOK with an extinction ratio of 6.25 dB. We have also demonstrated a streamlined dual drive PAM4 generation method, producing 25 Gbit/s PAM4 signal using the same device. A Michelson interferometer is demonstrated with a Vπ·Lπ of 1.36 V·cm. It has almost double the efficiency of an equivalent MZM. It reaches a data rate of 20 Gbit/s. A broadband MZM was developed and its performance has been characterized at both 1550 nm and 1950 nm wavelengths. At 1950 nm, the carrier-depletion modulator operates at a data rate of 20 Gbit/s with an extinction ratio of 5.8 dB and insertion loss of 13 dB. The modulation efficiency (Vπ·Lπ) is 2.68 V·cm at 4 V reverse bias. At 1550 nm, an open eye is obtained at 30 Gbit/s. The difference in bandwidth is caused by the bandwidth limit of the 2 µm measurement setup. This work is a proof of principle demonstration, significantly improving previously published results and filling the long pending gap for the 2 µm silicon modulators. It paves a route towards a fully silicon-based transceiver in the 2 µm window
Liu Hui 劉徽 (<i>fl</i>. 263) — Mathématicien des Cao-Wei
No full textà paraître dans Dictionnaire des individus et groupes humains dans la Chine du haut Moyen Âge, ed. François Martin et Damien Chaussende.Notice biographique sur Liu Hui 劉徽 (fl. 263), mathématicien des Cao-Wei, à paraître dans Dictionnaire des individus et groupes humains dans la Chine du haut Moyen Âge, ed. François Martin et Damien Chaussende
Review of Epoicocladius Šulc et Zavřel from China (Diptera, Chironomidae)
No full textYan, Chuncai, Liu, Ting, Cao, Wei, Zhang, Xinghua, Liu, Wenbin (2019): Review of Epoicocladius Šulc et Zavřel from China (Diptera, Chironomidae). Zootaxa 4590 (2): 289-295, DOI: 10.11646/zootaxa.4590.2.
Xun Xu 荀勖 (<i>ca</i>. 220-289) (Gongceng 公曾) — Lettré, musicologue, paléographe et homme d’État des Cao-Wei et des Jin
No full textNotice biographique sur Xun Xu 荀勖 (ca. 220-289) (Gongceng 公曾), lettré, musicologue, paléographe et homme d’État des Cao-Wei et des Jin, à paraître dans Dictionnaire des individus et groupes humains dans la Chine du haut Moyen Âge, ed. François Martin et Damien Chaussende
Xu Yue徐岳 (<i>fl</i>. 226) (Gonghe 公河) — Astronome et mathématicien érémitique des Han et des Cao-Wei
No full textà paraître dans Dictionnaire des individus et groupes humains dans la Chine du haut Moyen Âge, ed. François Martin et Damien Chaussende.Notice biographique sur Xu Yue 徐岳 (fl. 226) (Gonghe 公河), astronome et mathématicien érémitique des Han et des Cao-Wei, à paraître dans Dictionnaire des individus et groupes humains dans la Chine du haut Moyen Âge, ed. François Martin et Damien Chaussende
<Articles>The Procedures for the Execution of Reports to the Throne and the Sanction of the Emperor During the Period Extending from the Han to Cao Wei
No full text漢代から三国魏にかけていずれも上奏文の最終的な裁可は、皇帝が担っていた。裁可の形式について、漢代及び三国魏では、「可」などの裁可を示す文字もしくは赤い鉤印によるものであった可能性が高い。漢魏時代とも皇帝の署名による認可ではなかった。その上で、漢魏時代とも皇帝の自筆での裁可は必ずしも必要ではなかったことを明らかにした。そして、漢代から三国魏にかけては、筆跡に対する認識の変化と書写材料としての紙の普及という大きな変化が起こった時期であり、従来の皇帝裁可の制度に影響を与える可能性のある変化が起きた。しかし、詔書の信頼性を担保していたのは、漢魏時代とも印璽であった。最終的に、漢魏時代とも、一貫して上奏文の裁可については、必ずしも皇帝が自筆で裁可を下すわけではなかったという状況が変化することはなかったのである。During the period extending from the Han dynasty to Cao Wei of the Three Kingdoms, the ultimate sanction of reports to the throne was rendered by the emperor. It is highly likely that approval from the Han to Cao Wei was designated by physically writing the character 可 (ke) or with the red imprint of a carved seal. There is no evidence of approval being granted with the emperor's signature from the Han-to-Wei period. Moreover, I have made clear that in both the Han and Wei periods the emperor's holographic signature was not necessarily required to indicate approval. Then period from Han to Cao Wei was one of change when consciousness of calligraphy underwent a transformation and there was also a great change in the dissemination of paper as a material for transcribing written records; and these changes likely had an influence of the previous system of imperial sanction. However, reliability of written imperial edicts was insured by the imperial seal during the both the Han and Cao Wei. Ultimately, as regards approval of reports to the throne in both the Han and Cao Wei periods, the situation that did not necessarily require the emperor to indicate his approval with his own brush continued without change
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
FIGURES 2–7 in Review of Epoicocladius Šulc et Zavřel from China (Diptera, Chironomidae)
No full textFIGURES 2–7. Epoicocladius ephemerae (Kieffer, 1924). Larvae. 2—mandible; 3—mentum; 4—antenna; 5—labro-epipha- ryngeal region. Pupae. 6—Thoracic horn and precorneals in Chinese specimen; 7—precorneals in European specimens.Published as part of Yan, Chuncai, Liu, Ting, Cao, Wei, Zhang, Xinghua & Liu, Wenbin, 2019, Review of Epoicocladius Šulc et Zavřel from China (Diptera, Chironomidae), pp. 289-295 in Zootaxa 4590 (2) on page 292, DOI: 10.11646/zootaxa.4590.2.6, http://zenodo.org/record/265202
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