68,129 research outputs found
Noether's problem for p-groups with a cyclic subgroup of index p2
No full textAbstractLet K be any field and G be a finite group. Let G act on the rational function field K(xg:g∈G) by K-automorphisms defined by g⋅xh=xgh for any g,h∈G. Noether's problem asks whether the fixed field K(G)=K(xg:g∈G)G is rational (=purely transcendental) over K. We will prove that if G is a non-abelian p-group of order pn (n⩾3) containing a cyclic subgroup of index p2 and K is any field containing a primitive pn−2-th root of unity, then K(G) is rational over K. As a corollary, if G is a non-abelian p-group of order p3 and K is a field containing a primitive p-th root of unity, then K(G) is rational
Tapiena bilobata Liu and Kang, sp. n.
No full text<i>Tapiena bilobata</i> Liu and Kang, sp. n. <p>(Fig. 2 g, 6c, n–q)</p> <p> <b>Type material.</b> Holotype: male, China: Yunnan Prov.: Ruili, 1981. X.17, Coll. Xiong Jiang (IKCAS).</p> <p> <b>Description.</b> <i>Male (holotype)</i>. Tegmen with Rs branched before the middle of the tegmen, and R stem with more two lateral branches. Stridulatory file on underside of left tegmen with about 148 densely arranged fine teeth (Fig. 6c). Male tenth abdominal tergum dorsally with a median semicircular depressed area at basal eighth part, a rather deep wide median longitudinal furrow thoroughly separated tenth abdominal tergum into two symmetrical lobes, and also with slightly depressed areas at both sides of furrow, apical part dorsally spiniferous (Fig. 6 o); in lateral view, apical half part dorso-ventrally enlarged into a large spinous process directing downwards, and with apical margin obliquely truncated (Fig. 6 n). Cerci robust, short, with apex incurve into a triangular spine (Fig. 6 p). Subgenital plate narrow, long, apical margin deeply triangularly notched with lateral lobes gradually narrowed; styli long, cylindrical (Fig. 6 q).</p> <p> <i>Female</i>. Unknown.</p> <p> <b>Coloration.</b> Green. Compound eyes dark brown. Lateral surface of anterior femur with many rows of small black stripes. Cerci with apex brown.</p> <p> <b>Measurements of males (mm).</b> Length of body 23.5; length of pronotum 4.5; length of tegmen 32.0; largest width of tegmen 6.8; length of hind wing 36.0; length of posterior femur 15.0. <b>Discussion.</b> Size, coloration, occiput, pronotum, tegmen and leg spinulation also resembles <i>T. spinicauda</i>, <i>T. stridulous</i> and <i>T. qudridens</i>. It distinctly differs by the male stridulatory file and male tenth abdominal tergum.</p> <p> <b>Distribution.</b> China (Yunnan Prov.).</p>Published as part of <i>Liu, Chun-Xiang & Kang, Le, 2010, The genus Tapiena Bolívar (Orthoptera: Tettigoniidae: Phaneropterinae; Holochlorini), with description of three new species from China, pp. 49-64 in Zootaxa 2328</i> on pages 62-63, DOI: <a href="http://zenodo.org/record/193106">10.5281/zenodo.193106</a>
Noether's problem for metacyclic p-groups
No full textAbstractLet K be any field and G be a finite group. Let G act on the rational function field K(xg:g∈G) by K-automorphisms defined by g·xh=xgh for any g,h∈G. Denote by K(G) the fixed field K(xg:g∈G)G. Noether's problem asks whether K(G) is rational (=purely transcendental) over K. An affirmative answer to Noether's problem for metacyclic p-groups will be proved provided that K contains enough roots of unity
Integrating Career Technical Education Into A-G Curriculum
No full textINTEGRATING CAREER TECHNICAL EDUCATION INTO A-G CURRICULUM By Linda Kang Master of Science in Counseling, School Counseling This graduate project examines the relevance of career technical education and how it can be integrated into traditional core academic content to increase career awareness and exposure in high school students. The history, effectiveness and impact of vocational and career technical education, and the integration of career technical education into required academic courses addressing the standards of college and career readiness will be examined as part of this graduate project. Additionally, a workshop guide created for teachers and educators that introduces career-integrated curriculum and informs about the requirements of such courses and steps for implementation is provided, and collaborative space for teachers to draft course syllabi is encouraged as part of this graduate project.California State University, Northridge. Department of Educational Psychology and Counseling.Includes bibliographical references (pages 32-35
P Values and Statistical Significance
No full textThis resource, created by author Will G. Hopkins, defines what a p-value is, why .05 is significant, and when to use it. It also covers related topics such as one-tailed/two-tailed tests and hypothesis testing. Overall, this is a wonderful resource for students wanting to learn more about statistics, and more specially, significant testing
FIGURE 1. Eriobotrya shanense D.H. Kang, H.G. Ong & Y.D. Kim A. Flowering branch B. Leaf blade C–D. Stipules E. Bract F–G. Flower abaxial and adaxial view H–I. Petals J. Flower longitudinal section showing the androecium and gynoecium K. Stamen L. Styles and exposed ovary M. Ovary cross section N. Fruiting branch O–P. Fruit cross and longitudinal section. A–M in A new broad-leaved species of loquat from eastern Myanmar and its phylogenetic affinity in the genus Eriobotrya (Rosaceae)
No full textFIGURE 1. Eriobotrya shanense D.H. Kang, H.G. Ong & Y.D. Kim A. Flowering branch B. Leaf blade C–D. Stipules E. Bract F–G. Flower abaxial and adaxial view H–I. Petals J. Flower longitudinal section showing the androecium and gynoecium K. Stamen L. Styles and exposed ovary M. Ovary cross section N. Fruiting branch O–P. Fruit cross and longitudinal section. A–M. from Kim et al. MM-6026 (holotype HHU). Illustration by Ye-Seul Jang.Published as part of Kang, Dae-Hyun, Ong, Homervergel G., Lee, Jung-Hoon, Jung, Eui-Kwon, Kyaw, Naing-Oo, Fan, Qiang & Kim, Young-Dong, 2021, A new broad-leaved species of loquat from eastern Myanmar and its phylogenetic affinity in the genus Eriobotrya (Rosaceae), pp. 279-290 in Phytotaxa 482 (3) on page 283, DOI: 10.11646/phytotaxa.482.3.6, http://zenodo.org/record/478458
daesuk kang
No full text학위논문(석사)--아주대학교 일반대학원 :간호학과,2014. 8본 연구는 관상동맥 재협착 환자를 대상으로 그들의 가족지지와 건강행위이행과의 관계를 파악하여 추후 관상동맥 질환자를 위한 중재에 가족참여 방안에 대한 자료를 제공하고, 건강행위 이행 향상을 위한 간호중재 프로그램 개발의 근거자료를 제공하기 위한 서술적 조사연구이다.
연구대상자는 경기도 소재 일개 대학병원에서 관상동맥 재협착 질환으로 입원하여 관상동맥중재술(PCI) 치료를 받은 환자 80명을 편의표집 하였다. 자료수집은 2012년 8월 15일부터 2013년 4월 15일까지 총 8개월간 이루어졌으며 연구도구는 가족지지 정도를 측정하기 위하여 오세은(2001)이 제작한 도구와 관상동맥 재협착 질환자의 건강행위 이행을 측정하기 위해 Walker, Sechrist와 Pender(1987)에 의해 개발된 건강증진 생활양식 도구(Health Promoting Lifestyle Profile; HPLP)를 정선경(2006)이 수정한 도구를 사용하였다.
본 연구의 결과를 요약하면 다음과 같다.
1. 본 연구대상자의 가족지지 정도는 4점 만점에 평균 2.36±0.48점이며, 그 중 식 이지지가 가장 높은 점수를 보였고 투약지지, 스트레스 관련지지, 운동지지 순 으로 나타났다.
2. 연구대상자의 건강행위이행 정도는 4점 만점에 평균 2.68±0.34점이며, 그 중 금연 행위 이행이 가장 높은 점수를 보였고 건강책임 이행, 식이 이행, 운동 이행, 스 트레스관리 이행 순으로 나타났다.
3. 연구대상자의 가족지지와 건강행위 이행은 통계적으로 유의한 상관관계가 있었 다(r=.469, p=<.001). 가족지지는 대상자의 건강행위 이행의 하위 영역인 건강책 임 이행(p=<.001), 운동이행(p=<.001), 식이이행(p=.030), 스트레스관리 이행 (p=.032), 금연행위이행(p=.030) 등 모든 건강행위 이행에서 통계적으로 유의한 상관관계를 보였다.
4. 연구대상자의 일반적 특성에 따른 가족지지 차이를 분석한 결과, 가족지지에 유 의한 차이가 있는 것으로 나타났다. 종교가 있는 대상자가 종교가 없는 대상자 에 비해 가족지지를 많이 받고 있는 것으로 나타났으며(t=2.336, p=.022), 경제력 은 상, 중, 하로 구분하였고 경제력이 ‘상․중’인 대상자가 ‘하’인 대상자에 비해 가족지지를 많이 받고 있는 것으로 나타났다(F=7.212, p=.001).
5. 연구대상자의 일반적 특성에 따른 건강행위 이행과의 관계에서는 경제력과 흡연 력에서 유의한 상관관계를 보였다. 경제력이 ‘상․중’인 대상자들이 건강행위 이 행 점수가 높았다(F=7.043, p=.002). 흡연력의 경우 ‘피운적 없음’ 과 ‘피웠다 끊 음’이라고 대답한 대상자가 현재까지 ‘피움’이라고 대답한 대상자에 비해 건강행 위 이행점수가 높게 나타났다(F=5.108, p=.008).Ⅰ. 서론
A. 연구의 필요성
B. 연구의 목적
C. 용어의 정의
Ⅱ. 문헌고찰
A. 관상동맥 재협착과 관상동맥 질환자의 건강행위 이행
B. 관상동맥질환자의 가족지지와 건강행위 이행과의 관계
Ⅲ. 연구방법
A. 연구 설계
B. 연구대상자 및 표집방법
C. 연구도구
D. 자료수집방법 및 절차
E. 윤리적 고려
F. 자료분석방법
G. 연구의 제한점
Ⅳ. 연구 결과
A. 연구대상자의 일반적 특성
B. 연구대상자의 가족지지와 건강행위이행 정도
C. 연구대상자의 가족지지와 건강행위 이행과의 관계
D. 연구대상자의 일반적 특성에 따른 가족지지와 건강행위
이행
Ⅴ. 논의
A. 관상동맥 재협착 질환자의 가족지지와 건강행위 이행과의
관계
B. 관상동맥 재협착 질환자의 일반적 특성에 따른 가족지지와
건강행위 이행
Ⅵ. 결론 및 제언
A. 결 론
B. 제 언
참고문헌
부록Maste
Theoretical screening of P-block single atoms anchored on g-C3N4 for NO reduction to NH3
No full textThe NO reduction reaction (NORR) is considered an attractive strategy for efficient NO removal and sustainable ammonia (NH3) production. Herein, the catalytic behaviour of eleven p-block single atoms anchored on g-C3N4 monolayer (SAC@g-C3N4, SAC[double bond, length as m-dash]B, Al, Si, Ga, Ge, As, In, Sn, Sb, Te and Bi) is systematically investigated as NORR electrocatalysts using density functional theory (DFT) calculations. The thermodynamic stability of SAC@g-C3N4 and its suppression of hydrogen evolution were examined. In addition, the thermodynamically favourable reaction pathway was identified based on the Gibbs free energy change, where B@g-C3N4 catalyst exhibited a low limiting potential (UL) of −0.02 V. Furthermore, charge density analysis and projected density of states (PDOS) revealed the origin of NO activation. This work screens pure p-block SAC@g-C3N4 for the NORR and provides an atomic-level understanding of the reaction mechanism. These findings would aid the novel design of NORR catalysts and provide theoretical insights for the experimental synthesis of high-performance electrocatalysts
Pulsatilla saxatilis L. Xu & T. G. Kang 2022, sp. nov.
No full textPulsatilla saxatilis L. Xu & T.G. Kang, sp. nov., Figs. 1–3. Type:— CHINA. Liaoning, Fengcheng, Baiyun Mountain, on rocky cliffs, ca. 1100 m, 26 May 2015, L. Xu et al. 210682150526013 LY (holotype LNCM, isotypes IFP, IMD, LNCM, PE). Fig. 1. Diagnosis: From its putative closest ally, Pulsatilla chinensis (Fig. 4), the new species P. saxatilis is distinguishable by having light blue, whitish-blue or white (vs. violet) sepals and persistent styles 2–2.5 cm (vs. 3.5–6.5 cm) long (see Table 1). Description:—Perennial herb, 9–20 cm tall. Rhizome 0.5–1 cm in diameter. Basal leaves 6–11, leaf blade ovate, 2–3.5 × 1.5–3 cm, 3–foliolate or ternate-pinnate. Central leaflet long petiolulate, 0.5–2 cm long, cordate, 3–foliolate, central segment stipitate and deeply 3–lobed, ultimate lobes cuniform, 0.3–0.6 cm wide, apically 2–or 3–toothed, abaxially sparsely long pilose, adaxially glabrous; petiole 2–7.5 cm, densely white villose. Scapes solitary or 2, occasionally 3, erect, white villose. Involucral bracts 3 or 4, 1– 2.4 cm long, connate and tubular at base, apically palmately 3–lobed, apical palmate lobes lanceolate, abaxially densely long pilose. Flowers solitary, erect, 2–4 cm in diameter; sepals 6–11, light blue, whitish–blue or white, oblong-ovate, 1.5–2.5 × 0.4–1.4 cm, abaxially puberulent; stamens numerous, ca. 1/2 as long as sepals; carpels numerous, style yellow-green, stigma pale violet. Achenes 2.5–3 mm long, long pilose. Persistent styles 2–2.5 cm long, sparsely long pilose. Phenology:—Flowering in May; fruiting in June. Pollen morphology:—Pollen grains of Pulsatilla saxatilis are spheroidal and pantoporate, having 9–12 apertures (Fig. 5A, B). The pollen surface is rough and spinulate, and the spinules are unevenly distributed. The bases of the spinules are cushion-like, and the tops are acuminate. The spinules in the apertures are larger than those on the surface. In its putative closest ally, P. chinensis, pollen grains are tricolpate (Fig. 5C, D). Pollen morphology, therefore, lends strong support for the description of P. saxatilis as new. Distribution and habitat:— Pulsatilla saxatilis is currently known only from its type locality, i.e. Baiyun Mountain in Fengcheng, Liaoning province, north-east China (Fig. 6). It grows on rocky cliffs at an altitude of ca. 1100 m. Etymology:—The specific epithet, “ saxatilis ”, which means “dwelling or found among rocks”, refers to the habitat of the new species. Additional specimens examined (paratypes):— CHINA. Liaoning, Fengcheng, Baiyun Mountain, ca. 1100 m, on rocky cliffs, 22 May 2016, L . Xu et al. 210682160522032 LY (PE); the same locality, 22 May 2016, L . Xu et al. 210682160522032 LY (IFP, IMD, LNCM). Conservation status:— Pulsatilla saxatilis is currently known only from its type locality, with its distribution area being very small, although the population we observed in 2015 consisted of numerous individuals, and the habitat was in good condition, not disturbed by human activities. The conservation status of P. saxatilis may better be considered as “Endangered” (IUCN Standards and Petitions Committee 2019).Published as part of Zhang, Ting-Ting, Zhang, Shu-Mei, Xu, Liang & Kang, Ting-Guo, 2022, Pulsatilla saxatilis (Ranunculaceae), a new species from north-east China, pp. 195-202 in Phytotaxa 539 (2) on pages 195-200, DOI: 10.11646/phytotaxa.539.2.6, http://zenodo.org/record/635819
Millimeter-Wave UAV Coverage in Urban Environments
No full textComunicació presentada a 2021 IEEE Global Communications Conference (GLOBECOM), celebrat del 7 a l'11 de desembre de 2021 a Madrid, Espanya.With growing interest in mmWave connectivity for unmanned aerial vehicles (UAVs), a basic question is whether networks intended for terrestrial service can provide sufficient aerial coverage as well. To assess this possibility in the context of urban environments, extensive system-level simulations are conducted using a generative channel model recently proposed by the authors. It is found that standard downtilted base stations at street level, deployed with typical microcellular densities, can indeed provide satisfactory UAV coverage. Interestingly, this coverage is made possible by a conjunction of antenna sidelobes and strong reflections. As the deployments become sparser, the coverage is only guaranteed at progressively higher UAV altitudes. The incorporation of base stations dedicated to UAV communication, rooftop-mounted and uptilted, would strengthen the coverage provided their density is comparable to that of the standard deployment, and would be instrumental for sparse deployments of the latter.S. Rangan, W. Xia, S. Kang, and M. Mezzavilla were supported by NSF grants 1302336, 1564142, 1547332, and 1824434, NIST, SRC, and the industrial affiliates of NYU WIRELESS. A. Lozano and G. Geraci were supported by ERC grant 694974, by MINECO’s Project RTI2018-101040, by the Junior Leader Fellowship Program from “la Caixa" Banking Foundation, and by the ICREA Academia program. The work of V. Semkin was supported by the Academy of Finland
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