155,640 research outputs found
Naratettix cheondungsanus Hossain & Kwon & Suh & Kwon 2019, sp. nov.
No full textNaratettix cheondungsanus sp. nov. (Figs. 1–11) Description. General coloration whitish yellow with patchy orange patterns on crown, pronotum and scutellum. Coronal suture not distinctly visible, with 2 orange spots between posterior margin of crown and anterior margin of pronotum. Face shiny, without conspicuous spots or streaks; rostrum orange. Eye dark brown. Pronotum with two longitudinal orange stripes, and irregular orange patterns on lateral margins. Scutellum with two irregular orange stripes; scutellar suture prominent. Forewing without brown or castaneous band and orange stripe like other species of this group, but two small dark brown spots on 2nd and 4th apical cells. Hindwing hyaline. Leg and body venter whitish yellow. Second sternal apodeme in male with posterior lobes small, round apically, extended up to middle of 3rd sternite. Male genitalia. Pygofer lobe elongate, broad basally, roundly convex at posterior margin with pointed and slanting downwards posterior angle, numerous setae on near to ventrocaudal surface. Subgenital plate with 4 long macrosetae and row of short rigid setae at upper margin subbasally. Style long with narrow base, with prominent preapical lobe, widened and pointed apex. Connective Y-shaped, short base, with long narrow branches diverging on wide arc. Aedeagal shaft straight, long and tubular, strongly bent laterad with two apices in lateral view; dorsal apodeme short, moderately expanded, with pair of process arising from basolateral part of shaft, subapically bent recurringly; gonopore apical. Length. Males 2.6−2.9 mm, females 2.6−2.9 mm. Type material. Holotype male, Korea, Chungbuk Province: Mt. Cheondeungsan, on Quercus sp., 1.X.2016, Y.J. Kwon; Paratypes, 2 males and 3 females, same data as holotype. Distribution. Korea (Central). Host plant. Quercus sp. Etymology. The specific name is derived from name of the mountain of type locality. Remarks. This species differs from other species in lacking a castaneous brown or orange stripe on the forewing. Its male genitalia are similar to Naratettix ibukisianus but differ from the latter by the characteristic tip of the aedeagal shaft and position of the basolateral process.Published as part of Hossain, Md. Shamim, Kwon, Jin Hyung, Suh, Sang Jae & Kwon, Yong Jung, 2019, Taxonomic revision of the microleafhopper genus Naratettix Matsumura (Homoptera: Cicadellidae: Typhlocybinae) from Korea, pp. 148-158 in Zootaxa 4657 (1) on page 149, DOI: 10.11646/zootaxa.4657.1.6, http://zenodo.org/record/337102
Macrosteles nabiae Kwon, sp. nov.
No full text<i>Macrosteles nabiae</i> Kwon, sp. nov. <p>(Plate 3, figs. 10–19)</p> <p> <b>Length (including tegmen).</b> Male: 3.0– 3.4 mm; female: 3.5–4.0 mm.</p> <p>Pale yellow; head with 3 pairs of black spots, not merged; a short black longitudinal band between ocelli and eyes. Ocelli red and large, 0.5 times own diameter from corresponding eye.</p> <p>Male abdomen. 2nd acrotergite with trunk comparatively small and near horizontal, comparatively small, lateral processes usually longer than trunk width; neck very slender, about as long as trunk width. 2nd tergal apodeme reaching near 2/3 of tergite posteriorly. 1st sternal apodeme with posterior lobes slightly longer than wide. 2nd sternal apodeme with posterior lobes about 1.5 times as long as basal width.</p> <p>Male genitalia. Aedeagus with long apical appendages, nearly parallel, strongly curved dorsad in ventral view.</p> <p> <b>Holotype:</b> Korea, Daegu, 13.vii. 1984, Coll. Y.J. Kwon (KPNU). Paratype: 4 males, 10 females, same data as holotype; 1 male, same locality, 8.x.1984, Coll. Y.J. Kwon (KPNU); 2 males, same locality, 10.x.1984, Coll. Y.J. Kwon (KPNU); 1 male, Japan, Kyushu, Fukuoka, Tajima, 29.v.1958, Coll. Y. Miyatake (BMNH); CHINA: 1 male, 2 females, <b>Shanxi Prov.</b>, Jiaocheng County, Pangquangou Township, 26.vii.2006, Coll. Yang Zhaofu; 1 male, <b>Heilongjiang Prov.</b>, Mt. Mi, Peide County, 100m, 2.ix.2001, Coll. Sun Qiang; 2 males, 4 females, <b>Shandong Prov.</b>, Yantai City, Mt. Kunyu, 11.vii.2001, Coll. Qin Daozheng & Liu Zhenjiang; 2 males, 3 females, <b>Shaanxi Prov.</b>, Yangling County, vi.1986, Coll. Zhang Yalin; 1 male, <b>Xinjiang Autonomous Region</b>, Zhaosu City, Mohe Landscape, 30.vii.2006, Coll. Kang Juxia; 9 males, 20 females, <b>Xinjiang Autonomous Region</b>, 187 Corps, 7.viii.2002, Coll. Huang Min (NWAFU).</p> <p> <b>Distribution.</b> China, Korea and Japan.</p> <p> <b>Remarks.</b> This species has been confused with <i>M. laevis</i>, but can be differentiated from the latter by the characters of the male abdomen: 2nd acrotergite with trunk horizontal and 2nd tergal apodemes with posterior lobes not extending beyond posterior margin of tergite.</p> <p> <b>Etymology.</b> The specific epithet “ <i>nabi</i> ” is derived from the name of Dr. Kwon’s daughter, Nabi.</p>Published as part of <i>Yalin, Zhang, Lin, Lu & Kwon, Yong Jung, 2013, Review of the Leafhopper Genus Macrosteles Fieber (Hemiptera: Cicadellidae: Deltocephalinae) from China, pp. 361-392 in Zootaxa 3700 (3)</i> on page 373, DOI: 10.11646/zootaxa.3700.3.3, <a href="http://zenodo.org/record/248993">http://zenodo.org/record/248993</a>
Limassolla koreana Hossain & Kwon & Suh & Kwon 2019, sp. nov.
No full text<i>Limassolla koreana</i> sp. nov. <p>(Figs. 12 ‾23, 47‾50)</p> <p> <b>Description.</b> Body slender, general coloration milky white to yellowish white, mottled with conspicuous orange to yellowish orange patches on crown, pronotum, scutellum and forewing. Crown subtriangularly produced anterad, with two yellowish white stripes on anterior margin, and prominent stripe along midline. Face shiny, pale yellow to whitish, without any spot or streak; rostrum orange, with dark brown apex. Pronotum and scutellum with irregular whitish stripes; scutellum with dark brown spot near apex, with big triangular white stripe, two distinct whitish longitudinal patches at posterior corners. Forewing subhyaline, with orange to yellowish orange patterns, and several black to dark brown spots on costal margin. Hindwing subhyaline. Venter and legs concolorous, whitish. Second sternal apodeme with posterior lobes large, parallel sided, ovoid at apex, reaching to hind margin of 5th sternite.</p> <p> <b>Male genitalia.</b> Pygofer with apical margin dorso-caudad; dorsal margin slightly concave; ventral margin armed with long slender process, arising from caudoventral side, directed dorsally, gently tapered apically. Subgenital plate short and broad, with small apical part, with 2 macrosetae subbasally. Aedeagal shaft almost straight, narrowing terminally, armed with 3 apical slender processes, comprising terminal one directing apically, and two subterminal ones directing basally; gonopore subapical on ventral surface. Style long, slightly curved, with several microsetae medially; apex with sharp angled edge subapically. Connective Y-shaped, with small central lobe.</p> <p> <b>Body length.</b> Male 2.8‾ 3.1mm, female 3.0‾ 3.3mm.</p> <p> <b>Type material.</b> Holotype male, Korea: Chungbuk Province, Jincheon, on <i>Diospyros kaki</i>, 14.VIII.2008, Y.J. Kwon; Paratypes, 8 males & 14 females, same data as holotype; Gyeonggi Province: 2 males, Camp Humphreys, 23. VI.2016, H.C. Kim; Jeonnam Province: 9 males & 6 females, Illimsan, on <i>Diospyros kaki</i>, 23.VIII.2018, Y.J. Kwon.</p> <p> <b>Distribution.</b> Korea (South, Central).</p> <p> <b>Host plant.</b> <i>Diospyros kaki</i> (Persimmon).</p> <p> <b>Remarks.</b> This species is similar to <i>L. kakii</i> Chou et Ma, 1981, but differs in having the aedeagus shaft with 3 apical processes. The new species is the second one known to dwell on persimmon trees in Asia, and it is considered as an occasional pest with sporadic occurrence in Korea so far.</p>Published as part of <i>Hossain, Md. Shamim, Kwon, Jin Hyung, Suh, Sang Jae & Kwon, Yong Jung, 2019, Taxonomic revision of the microleafhopper genus Limassolla Dlabola from Korea (Hemiptrea: Cicadellidae: Typhlocybinae), pp. 549-558 in Zootaxa 4603 (3)</i> on page 552, DOI: 10.11646/zootaxa.4603.3.7, <a href="http://zenodo.org/record/2702383">http://zenodo.org/record/2702383</a>
Scaphomonus naejangsanus Dutta & Kwon & Suh & Kwon 2020, sp. nov.
No full text<i>Scaphomonus naejangsanus</i> sp. nov. <p>(Figs. 1–12)</p> <p> <b>Description.</b> Genearal coloration ochraceous, with reddish bands. Head with thin arcuate and piceous submargial band anteriorly, with transverse arcuate band between eyes, narrowly margined with piceous, orange red patch. Face with thin arcuate and piceous submarginal band. Pronotum with anterior orange and posterior submarginal brown transverse bands. Forewings ochraceous, with hyaline spots and piceous areas. Head including eyes slightly narrower than pronotum. Crown triangularly produced, distinctly longer medially than next to eyes, 0.8 times as long as width between eyes. Ocelli situated on anterior margin of crown, separated from eye by distance equal to its own diameter. Frontoclypeus narrow, nearly 1.6 times longer than width between antennal pits; transclypeal suture distinct. Anteclypeus slightly expanded apically, with apex following normal curve of genae. Lora almost as wide as anteclypeus basally. Pronotum approximately 1.4 times as long as crown; lateral margin carinate; anterior margin roundly produced; posterior margin slightly concave. Scutellum nearly as long as pronotum, with transverse suture slightly curved and prominent.</p> <p>Second sternal apodeme in male with posterior lobes long and well developed, convergent distally, reaching 4th sternite.</p> <p> <b>Male genitalia.</b> Pygofer slightly longer than wide in lateral view, apparently extended beyond apex of subgenital plates, with numerous long macrosetae in distal half; hind margin subobliquely rounded. Subgenital plates strongly tapering in apical 1/3 to narrowly rounded apex, with a lateral row of stout macrosetae and additional hair like setae. Styles approximately 2.7 times as long as wide basally; preapical lobe prominent, with setose hairs; apophysis gently tapered to narrowly rounded apex. Connective Y-shaped, with arms nearly twice longer than stem, produced lobe-likely on dorsal side in lateral view. Aedeagal shaft slender, wider at base, nearly twice longer than connective, pointed apically, gently curved at distal 1/ 3 in lateral view; gonopore subapical, on dorsal side.</p> <p> <b>Female genitalia.</b> Posterior margin of abdominal sternum VII deeply concave, with dark patch and slender triangular projection medially.</p> <p> <b>Body length.</b> Male 4.6-4.7mm; female 4.9-5.0mm.</p> <p> <b>Type material.</b> Holotype, male, Korea, Jeonbuk Province, Naejangsan, 14.VIII.1981, coll. Y.J. Kwon. Paratypes: 1 female, same data as holotype; 1 female, Gyeongbuk Province, Palgongsan, 23.IX.1984; 1 female, Gyeonggi Province, Gwangneung, 12.VIII.1994, all same collector.</p> <p> <b>Host plant.</b> Unknown.</p> <p> <b>Etymology.</b> The name of the species is derived from the locality of the holotype.</p> <p> <b>Remarks.</b> This new species resembles <i>Scaphomonus indicus</i> (Distant) but can be readily differentiated from the latter by the shape of the subgenital plates and aedeagal shaft.</p>Published as part of <i>Dutta, Nirmal Kumar, Kwon, Jin Hyung, Suh, Sang Jae & Kwon, Yong Jung, 2020, First record of the leafhopper genus Scaphomonus Viraktamath from Korea, with description of one new species (Hemiptera: Cicadellidae: Deltocephalinae), pp. 191-195 in Zootaxa 4747 (1)</i> on page 194, DOI: 10.11646/zootaxa.4747.1.9, <a href="http://zenodo.org/record/3693539">http://zenodo.org/record/3693539</a>
Hacia un sistema de detección automá - tica de talento deportivo: una aplicación al Tae Kwon Do
No full textEl Tae Kwon Do es un arte marcial coreano reconocido como deporte olímpico, para el cual se han desarrollado
diferentes herramientas desde la ingeniería, principalmente enfocadas en mejorar la capacidad de los competidores. Sin embargo, existe una brecha en el proceso de selección de atletas de
alto rendimiento. Por ello, está investigación se enfocó en desarrollar un sistema basado en la información de la clasificación
de los deportistas de la Federación Ecuatoriana de Tae Kwon
Do, utilizando los métodos wrapper y embedded y los algoritmos Decision Tree y Support Vector Machine para la valoración
de los diferentes factores considerados en dicha clasificación. La
principal contribución de este trabajo es proporcionar un sistema de apoyo objetivo para la selección de dichos atletas.Tae Kwon Do is a Korean martial art included as an Olympic sport, where several tools have been deve
-
loped from the engineering point of view,mainly focused on improving the capacity of the athletes. Nevertheless, there is
a breach in the selection process of high performance athletes. For this reason, this research was focused on developing
a system based on the information of the classification for the athletes in the Tae Kwon Do Ecuadorian Federation by
using the wrapper and embedded modes and the Decision Tree and Support Vector Machines machine learning algo
-
rithms. These algorithms and modes were used to assess the different factors considered in this classification. The main
contribution of this work is to provide a support system for the selection of these athletes
HUBUNGAN KECEPATAN REAKSI DAN KESEIMBANGAN TERHADAP KETERAMPILAN TAE KWON DO PADA ATLET TAE KWON DO PPLD PROVINSI ACEH TAHUN 2017
No full textABSTRAKYusri, Irhamna. 2013. Hubungan Kecepatan Reaksi dan Keseimbangan Terhadap Keterampilan Tae Kwon Do pada Atlet Tae Kwon Do PPLD Provinsi Aceh Tahun 2017. Skripsi, Jurusan Pendidikan Jasmani Kesehatan dan Rekreasi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Syiah Kuala. Pembimbing:(1)Drs. Abdurrahman, M.Kes., (2) Karimuddin, S.Pd., M.Pd.Kata kunci: kecepatan reaksi, keseimbangan, keterampilan Tae Kwon DoTae Kwon Do merupakan seni beladiri yang berasal dari Korea, seni beladiri Tae Kwon Do lebih mengutamakan kaki daripada tangan pada saat melakukan penyerangan, pada dasarnya beladiri Tae Kwon Do hampir sama dengan beladiri lainnya semua anggota badan dapat digunakan, akan tetapi beladiri Tae Kwon Do lebih dominan dalam penggunaan kaki. Penelitian ini bertujuan untuk mengetahui Hubungan Kecepatan reaksi dan keseimbangan dengan keterampilan Tae Kwon Do pada atlet Tae Kwon Do PPLD Provinsi Aceh Tahun 2017. Penelitian ini menggunakan metode penelitian deskriptif dengan teknik analisis korelasional. Populasi dalam penelitian ini adalah atlet Tae Kwon Do PPLD Provinsi Aceh yang berjumlah 13 orang. Teknik pengambilan sampel yang dilakukan adalah total sampling. Teknik pengumpulan data dilakukan dengan cara: (1) tes kecepatan reaksi (whole body reaction) (2) tes keseimbangan (bass test) (3) tes keterampilan Tae Kwon Do. Teknik analisis data dilakukan dengan menggunakan rumus analisis korelasi ganda. Berdasarkan hasil analisis data,temuan penelitian ini dapat di kemukakan sebagai berikut: terdapat hubungan yang positif dan signifikan antara kecepatan reaksi dan keseimbangan dengan keterampilan Tae Kwon Do (F=16,52), kecepatan reaksi memberi kontribusi sebesar 42,25%, dan keseimbangan 77,44% dengan keterampilan Tae Kwon Do.Simpulan penelitian ini adalah terdapat sumbangan yang signifikan dari kecepatan reaksi (X1) dan keseimbangan (X2) dengan keterampilan Tae Kwon Do (Y) pada atlet Tae Kwon Do PPLD Provinsi Aceh Tahun 2017. Selain itu juga didukung oleh teknik yang dikuasai oleh atlet, semakin baik teknik yang dikuasai atlet maka hasil yang diperoleh akan semakin optimal
Hacia un sistema de detección automá - tica de talento deportivo: una aplicación al Tae Kwon Do
No full textEl Tae Kwon Do es un arte marcial coreano reconocido como deporte olímpico, para el cual se han desarrollado
diferentes herramientas desde la ingeniería, principalmente enfocadas en mejorar la capacidad de los competidores. Sin embargo, existe una brecha en el proceso de selección de atletas de
alto rendimiento. Por ello, está investigación se enfocó en desarrollar un sistema basado en la información de la clasificación
de los deportistas de la Federación Ecuatoriana de Tae Kwon
Do, utilizando los métodos wrapper y embedded y los algoritmos Decision Tree y Support Vector Machine para la valoración
de los diferentes factores considerados en dicha clasificación. La
principal contribución de este trabajo es proporcionar un sistema de apoyo objetivo para la selección de dichos atletas.Tae Kwon Do is a Korean martial art included as an Olympic sport, where several tools have been deve
-
loped from the engineering point of view,mainly focused on improving the capacity of the athletes. Nevertheless, there is
a breach in the selection process of high performance athletes. For this reason, this research was focused on developing
a system based on the information of the classification for the athletes in the Tae Kwon Do Ecuadorian Federation by
using the wrapper and embedded modes and the Decision Tree and Support Vector Machines machine learning algo
-
rithms. These algorithms and modes were used to assess the different factors considered in this classification. The main
contribution of this work is to provide a support system for the selection of these athletes
NORMAS JURÍDICAS: Subsecretaría de Deporte y Actividad Física-Acuerdo Ministerial que aprueba reforma a Estatuto de Asociación Deportiva Provincial de Tae Kwon Do de Pichincha (asociación ajena a actividad religiosa, prohibido desviar sus fines a labores religiosas): Subsecretaría de Deporte y Actividad Física-Acuerdo Ministerial que aprueba reforma a Estatuto de Asociación Deportiva Provincial de Tae Kwon Do de Pichincha (asociación ajena a actividad religiosa, prohibido desviar sus fines a labores religiosas)
No full textSubsecretaría de Deporte y Actividad Física-Acuerdo Ministerial que aprueba reforma a Estatuto de Asociación Deportiva Provincial de Tae Kwon Do de Pichincha (asociación ajena a actividad religiosa, prohibido desviar sus fines a labores religiosas)
Fuente: www.registroficial.gob.e
SECOND-ORDER FINITE DIFFERENCE METHOD FOR OPTION PRICING UNDER JUMP-DIFFUSION MODELS
No full textWe develop a finite difference method to solve partial integro-differential equations which describe the behavior of option prices under jump-diffusion models. With localization to a bounded domain of the spatial variable, these equations are discretized on uniform grid points over a finite domain of time and spatial variables. The proposed method is based on three time levels and leads to linear systems with tridiagonal matrices. In this paper the stability of the proposed method and the second-order convergence rate with respect to a discrete l(2)-norm are proved. Numerical results obtained with European put options under the Merton and Kou models show the behaviors of the stability and the second-order convergence rate.open112219sciescopu
A SECOND-ORDER TRIDIAGONAL METHOD FOR AMERICAN OPTIONS UNDER JUMP-DIFFUSION MODELS
No full textWe propose an implicit numerical method for pricing American options where the underlying asset follows a jump-diffusion model. Using the fact that the prices of American options are given by linear complementarity problems (LCPs), we combine an implicit finite difference method with an operator splitting method. The proposed method is constructed on three time levels, and the operator splitting method is used to treat American constraints. We concentrate on the formulation of the numerical method which leads to linear systems with tridiagonal coefficient matrices. Numerical experiments show that the implicit method has the second-order convergence rate, and the prices of American options can be obtained in a fraction of a second on a computer.open111820sciescopu
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