19,418 research outputs found
Approximating outcome probabilities of linear optical circuits
No full textQuasiprobability representation is an important tool for analyzing a quantum
system, such as a quantum state or a quantum circuit.
In this work, we propose classical algorithms specialized for approximating
outcome probabilities of a linear optical circuit using -parameterized
quasiprobability distributions. Notably, we can reduce the negativity bound of
a circuit from exponential to at most polynomial for specific cases by
modulating the shapes of quasiprobability distributions thanks to the
norm-preserving property of a linear optical transformation.
Consequently, our scheme renders an efficient estimation of outcome
probabilities with precision depending on the classicality of the circuit.
Surprisingly, when the classicality is high enough, we reach a
polynomial-time estimation algorithm within a multiplicative error.
Our results provide quantum-inspired algorithms for approximating various
matrix functions beating best-known results. Moreover, we give sufficient
conditions for the classical simulability of Gaussian boson sampling using the
approximating algorithm for any (marginal) outcome probability under the
poly-sparse condition.
Our study sheds light on the power of linear optics, providing plenty of
quantum-inspired algorithms for problems in computational complexity.Comment: 27 pages, 2 figures, 2 table
Chinese literary works translated into Baba Malay: a bibliographical study
No full textAnalyses 68 unique titles of Baba translated works published between 1889 and 1950. The titles are held in the libraries of the University of Malaya (UM), Science University Malaysia (USM), National University of Malaysia (UKM), the Dewan Bahasa dan Pustaka (DBP), National University of Singapore (NUS), National Library of Singapore (NLS) and the British Library (BL). The results reveal three periods of active publication of Baba translated works. A total of 18 works were translated before World War I, followed by 10 just after the war, 39 titles were published before the break of the World War II and 1 was identified in 1950. There were 103 persons involved in the 68 translated works, some of whom are responsible for more than one title. The most prominent translators were Chan Kim Boon, Wan Boon Seng, Seow Chin San and Lee Seng Poh. Some of the translators were also be editors, illustrators or editors. There were 31 publishers and 21 printing presses involved, all were located in Singapore. The most active publishers were Wan Boon Seng, Kim Seck Chy Press and Nanyang Romanised Malay Book Co. The translated works mainly cover historical classical Chinese stories, chivalrous stories, romances, folklore and legends. The titles were priced between 10 cents to 2 dollars in Straits currency. The University of Malaya Library held the largest number of unique title (62) out of which 15 were unique titles
Limassolla (Limassolla) dangjinensis Oh & Lim & Lee & Kim & Jung 2020, sp. nov.
No full textL. (Limassolla) dangjinensis sp. nov. Oh et Jung (Figs. 12 ~22) Description. Vertex and pronotum yellowish orange with pale yellow patterns, vertex with 3 pale yellow spots and pronotum with five round pale yellow spots. Mesonotum yellowish orange with small and narrow pale yellow pattern, scutellum pale yellow (Fig. 12). Face pale yellow and gena almost white. Legs whitish yellow and abdomen yellow with pale yellow strips (Fig. 13). Forewing with complex pattern including yellowish orange maculae and dark brown lines (Fig. 14). Male abdominal apodemes large and extended to 6th segment (Fig. 20). Male genitalia. Pygofer lobe wide truncate distally, appendage relatively wide basally, sinuate distally (Fig. 18). Subgenital plate narrow with several macrosetae on middle part and several microsetae on apical margin (Fig. 22). Style with several microsetae on middle of outer margin and distal margin of apex flat (Fig. 19). Aedeagus shaft slender and elongate in lateral and posterior view, apex with two pairs of short processes, one extending distad and the other extending basad and bent inward (Fig. 16, 17). Connective small and star-shaped with six lobes, including thin anterior median lobe (Fig. 21). Measurements. Body length male 3.14~ 3.28mm, female 3.22~ 3.56mm. Type materials. Holotype: [CNU] ♂, Korea, Chungcheongnam-do, Dangjin-si, Sunseong-myeon, Seonguk-ri on Diospyros kaki THUNB, 11.ix. 2015, coll. S. Oh. Paratype: [CNU] 2♂♂, 22♀♀, same data as holotype. Host plants. Diospyros kaki THUNB * (Ericales: Ebenaceae). Bionomics. This species was not found in persimmon orchards, but was found on a persimmon tree in native forest and caused feeding injury to the tree (Fig. 23–B). Distribution. Korea *. Remarks. This new species is similar to two previously described Limassolla species in general appearance. It differs from L. hebeiensis Cai, Liang & Wang, 1992 as follows: 1) pygofer appendage sinuate, 2) style curved gently with several microsetae on outer margin, 3) aedeagus processes short and lower process bent inward, 4) connective with six lobes, 5) male abdominal apodemes extended to 6th segment. It differs from L. diospyri Chou & Ma, 1981 as follows: 1) pygofer appendage sinuate, 2) aedeagus processes curved in caudal view, 3) aedeagus processes branched below apex, 4) connective with six lobes, 5) male abdominal apodemes extended to 6th segment. Etymology. The specific name is derived from that of the type locality.Published as part of Oh, Sumin, Lim, Jongok, Lee, Gwan-Seok, Kim, Il-Kwon & Jung, Sunghoon, 2020, A new species of the genus Limassolla Dlabola (Hemiptera: Auchenorrhyncha Cicadellidae: Typhlocybinae) from Korea, with a new record and new synonymy, pp. 582-588 in Zootaxa 4819 (3) on pages 583-586, DOI: 10.11646/zootaxa.4819.3.9, http://zenodo.org/record/439718
Correction to: Chemoradiation in elderly patients with glioblastoma from the multiinstitutional GBMmolRPA cohort: is shortcourse radiotherapy enough or is it a matter of selection?
No full textThe name of author Do Hoon Lim was incorrect in the initial online publication. The original article has been corrected
Eurhadina dongwolensis Oh et Jung, sp. nov.
No full textEurhadina dongwolensis Oh et Jung, sp. nov. (Figs. 1–11) Description. Body entirely pale yellow. Vertex, face and pronotum pale yellow without dark markings (Fig. 1). Between the height and width of the central portion of the eye and the crown almost equal. Crown only slightly produced medially. Forewing pale yellow with two dark brown oblique lines along costal margin, two additional lines just distad of clavus, and preapical area translucent with pale brown pattern and one dark brown spot on M 1 + 2 vein (Fig. 3). Legs yellow without pattern. Male abdomen yellow with pair of dark spots on sternite III (Fig. 2). Female as in male except abdomen without dark spots. Male abdominal apodemes thick and dark, broadened distally and extended to segment V (Fig. 7). Male genitalia. Pygofer side distinctly bilobed apically with scattered microsetae, upper lobe with 5 microsetae (Fig. 11). Disc of lower lobe with several scattered microsetae. Subgenital plate with 1 long macroseta near base and several short microsetae near apical margin, short rigid microsetae along apical margin; apical margin with one small well-sclerotized preapical projection (Fig. 10). Style curved inner side and apex bent down and inner margin with row of microsetae (Fig. 9). Aedeagus in caudal view antler shapes with paired preapical and apical processes; apical processes simple, unbranched, extended dorsolaterad; preapical processes extended dorsolaterad, each with 3 processes; aedeagal shaft strongly recurved in lateral view and G shaped, all processes extended slightly anterad (Figs 5, 6). Connective Yshaped, arms slender and sinuate (Fig. 8). Measurements. Body length: males 3.5 ~ 3.8mm, females 3.5mm Type materials. Holotype: [CNU] ♂, Korea, Gongju-si, Banpo-myeon, Dongwol valley, 0 1. ix. 2014, coll. S. Oh.; Paratypes: [CNU] 56 ♂♂, 1 ♀ same data as holotype.; [CNU] 2 ♂♂, Korea, Geumsan-gun, Jinsan-myeon, Mt. Daedun, 29. vii. 2014, coll. S. Oh. Host plants. Unknown Distributions. Korea (Central) Remarks. This species was collected with a light trap in a mixed maple and oak forest. It is similar to Eurhadina koreana Dworakowska 1971, but differs as follows: 1) preapical process branched 3 parts and extended dorsolaterad; 2) apical process shorter than preapical process and U-shaped; 3) forewing oblique line not extended to anteapical cell; 4) pygofer side distinctly bilobed apically. Etymology. The specific name is derived from the type locality, Dongwol Valley.Published as part of Oh, Sumin, Lim, Jongok & Jung, Sunghoon, 2016, A new species of the genus Eurhadina Haupt (Hemiptera: Auchenorrhyncha: Cicadellidae: Typhlocybinae) from Korea, with a key to Korean species in Zootaxa 4103 (1), DOI: 10.11646/zootaxa.4103.1.7, http://zenodo.org/record/26250
Development of autonomous laser toning system based on vision recognition and robot manipulator
No full textIn this paper, the design, implementation, and operation method of the autonomous laser toning system are proposed, which is called as MELON (Manipulator for Effective Laser tONing). The system can recognize the accurate treatment points from the 3D point cloud data obtained with the camera, and it is possible to emit the laser at the desired position and orientation repeatedly, precisely, and accurately using intuitive differential inverse kinematics of the robot manipulator. The feasibility test of the MELON is conducted by using a plaster cast of a woman's head, and then, we find that the manipulator has a workspace to cover the entire face of the human inductively and distribution of the laser emission is homogeneous on the face. Therefore, we find the possibility of the autonomous laser toning using MELON
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