1,363 research outputs found
Unimodality of Betti numbers for Hamiltonian circle actions with index-increasing moment Maps
No full textThe unimodality conjecture posed by Tolman in [L. Jeffrey, T. Holm, Y. Karshon, E. Lerman and E. Meinrenken, Moment maps in various geometries, http://www.birs.ca/workshops/2005/05w5072/report05w5072.pdf] states that if (M,ω) is a 2n-dimensional smooth compact symplectic manifold equipped with a Hamiltonian circle action with only isolated fixed points, then the sequence of Betti numbers {b0(M),b2(M),...,b2n(M)} is unimodal, i.e. bi(M) ≤ bi+2(M) for every i < n. Recently, the author and Kim [Y. Cho and M. Kim, Unimodality of the Betti numbers for Hamiltonian circle action with isolated fixed points, Math. Res. Lett. 21(4) (2014) 691-696] proved that the unimodality holds in eight-dimensional case by using equivariant cohomology theory. In this paper, we generalize the idea in [Y. Cho and M. Kim, Unimodality of the Betti numbers for Hamiltonian circle action with isolated fixed points, Math. Res. Lett. 21(4) (2014) 691-696] to an arbitrary dimensional case. We prove the conjecture in arbitrary dimension under the assumption that the moment map H : M → R is index-increasing, which means that ind(p) < ind(q) implies H(p) < H(q) for every pair of critical points p and q of H, where ind(p) is the Morse index of p with respect to H. © World Scientific Publishing Company1111sciescopu
The antihypertensive effects of the Jamaican Cho-Cho (Sechium edule)
No full textThe experiments reported in this study constitute a preliminary investigation into the possible hypotensive effect of the Jamaican Cho-Cho (Sechium edule). Experiments were conducted in a random and blind fashion on two sub species of Sechium edule. Both the pulp and the peel were examined for hypotensive activity. Water-soluble extracts were prepared from these components of the fruit and injected into anaesthetised rats. Various cardiovascular parameters were measured including heart rate, mean arterial pressure (MAP) and several ECG intervals. We report that all extracts tested produced a fall in blood pressure with little change in ECG intervals. Extract B produced the least change in heart rate with a fall in MAP of approximately 23 mmHg. Changes in heart rate with all extracts appeared to be minimal as an ED25 value could only be determined for extract A, and ED10 values could not be evaluated for extracts C and D. The mechanism(s) by which these extracts produce their hypotensive effects could not be determined in these preliminary experiments. However, it appears not to involve direct effects on cardiac tissue. This conclusion is based on the finding that it took a minimum of 10 to 15 seconds for the hypotensive action to manifest post bolus. Future experiments will be aimed at delineating the mechanism(s) involved in decreasing MAP.Peer reviewedfinal article publishe
Nota su Eschilo, Cho. 65
No full textThe author defends the reading ἄκραντος in the sense of “unfinished” in Aesch. Cho. 65
Gonioctena (Gonioctena) jolantae Cho 2022, new species
No full textGonioctena (Gonioctena) jolantae new species (Figs 1–2, 7, 12) Type locality. Laos: Houaphanh Province, Phou Pan Mountain. Type material. Holotype: ♂ (NHM), “NE LAOS, Hua Phan prov. Ban Saleui, Phou Pan (Mt.) - N 20°12’ E 104°01’ 1300-1900m, 3-30.iv.2014 C. Holzschuh leg. // BMNH{E} 2015-38 C. Holzschuh // NHMUK 010899434 // HOLOTYPUS Gonioctena jolantae sp. nov. des. H.W. Cho 2021”. Paratypes: 3 ♂♂, 1 ♀ (NHM), same data as holotype plus “NHMUK 010901079 // NHMUK 010901419 // NHMUK 010901067 // NHMUK 010901080 // PARATYPUS Gonioctena jolantae sp. nov. des H.W. Cho 2021”. Diagnosis. This new species is similar to G. fujiana and G. kamikawai, in that the pronotum has nine black spots and elytral punctures are arranged in irregular single or double rows. However, G. jolantae new species can be distinguished by the following characters: irregularly outlined yellowish-brown markings on the elytral humeri extend to 3/5 of the elytral base (to 1/2 of base in G. fujiana, and 1/3 to 3/5 of base in G. kamikawai); median lobe subparallel-sided with apical process narrower than median lobe shaft, the sides rounded (parallel-sided with apical process broader than median lobe shaft and sides angulate in G. fujiana; subparallel-sided with apical process narrower than median lobe shaft and sides angulate in G. kamikawai). Description. Measurements in mm (n = 3): Length of body: 5.60–6.55 (mean 6.01); width of body: 3.36–3.98 (mean 3.57); height of body: 2.13–2.66 (mean 2.36); width of head: 1.56–1.78 (mean 1.68); interocular distance: 1.02–1.18 (mean 1.09); width of apex of the pronotum: 1.76–2.10 (mean 1.93); width of base of the pronotum: 2.58–3.19 (mean 2.87); maximum width of pronotum: 2.58–3.19 (mean 2.87); length of pronotum along midline: 1.31–1.45 (mean 1.38); length of elytra along suture: 4.18–4.95 (mean 4.44). Body oblong-ovate and moderately convex (Figs 1, 2). Head dark reddish-brown with two black spots on the vertex. Mouthparts dark reddish-brown with apices of mandibles black. Antennomeres I–V yellowish-brown; VI–VII darkened; VIII–XI blackish-brown. Pronotum reddish-brown with nine black spots. Elytra coppery-brown, lateral margins yellowish-brown, with feeble metallic greenish-black lustre; humeri with black spots surrounded by irregularly defined yellowish-brown markings. Venter and legs entirely reddish-brown. Head. Vertex weakly convex, covered with moderately dense punctures, becoming denser toward the sides. Frontal suture V-shaped, coronal suture weak. Frons flat, strongly depressed at the anterior margin, covered with dense punctures. Clypeus rather narrow and trapezoidal. Anterior margin of labrum weakly concave. Mandibles with two sharp apical teeth and deep lateral excavations for maxillary palpomeres. Maxillary palpi four-segmented with apical palpomeres moderately widened, truncate apically. Antennae reaching pronotal base in male, almost reaching base in female; antennomere I robust and longest; II longer than III; III longer than IV; VI–X widened; XI about 1.54 times as long as wide. Pronotum. In dorsal view widest at or near base, moderately convexly narrowed anteriorly, anterior angles strongly produced. Anterior and lateral margins bordered; lateral margins usually distinct in dorsal view. Trichobothria absent from anterior angles, present on posterior angles. Disc covered with sparse to dense punctures; lateral sides covered with much larger and denser punctures; interspaces covered with fine and sparse punctures. Scutellum. Slightly wider than long, narrowed posteriorly. Elytra. In dorsal view moderately widened posteriorly, widest beyond middle, roundly narrowed posteriorly. Humeral calli well developed. Disc with irregular large punctures arranged in 11 irregular single or double rows, including short scutellar row; interspaces with finer sparse punctures. Epipleura mostly visible (except the apical 2/5) in lateral view. Hind wings well developed. Venter. Pronotal hypomera weakly rugose with coarse punctures on anterior 1/5. Prosternum with coarse and dense punctures bearing long setae; prosternal process enlarged apically, bordered laterally, with sparse punctures. Metaventrite with minute and sparse punctures medially, large and dense punctures laterally. Abdominal ventrites with sparse to dense punctures bearing short setae; apex of last visible abdominal ventrite weakly depressed in male. Legs. Moderately robust. Tibiae widened apically, each with tooth-like projection. Forelegs with tarsomere I slightly narrower than III in male; distinctly narrower than III in female. Tarsal claws appendiculate. Genitalia. Median lobe in dorsal view long, subparallel-sided, moderately constricted from apical 1/4 to expanded arcuate apex with rounded lateral angles (Fig. 7); in lateral view entirely thin, moderately curved, with pointed apex; distal tip of flagellum trifurcated. Spermatheca absent. Etymology. Dedicated to the well-known chrysomelidist, Professor Jolanta Świętojańska (University of Wrocław, Poland), who has always kindly supported the work of the author. Distribution. Laos: Houaphanh (Fig. 12). This species is disjunct in distribution with respect to other members of the species-group, being over 1,500 km distant from the nearest species in East China.Published as part of Cho, Hee-Wook, 2022, Two new species of the nominotypical subgenus Gonioctena Chevrolat, 1836, from China and Laos, and a proposed new species-group (Coleoptera: Chrysomelidae: Chrysomelinae), pp. 111-120 in Zootaxa 5150 (1) on page 113, DOI: 10.11646/zootaxa.5150.1.6, http://zenodo.org/record/661011
The ministry of song : unmarried British women's hymn writing, 1760-1936
No full textBecause they were not obliged to take on the familial tasks which until recently have defined woman's role, unmarried British women of literary talent and Christian conviction have often seen themselves as being called to the vocation of hymn-writing.
Through biographical study, historical contextualisation and close reading. this thesis examines hymns written by seven such writers, over the period 1760-1936. Chapter 1 examines how Anne Steele's hymns gained entry into print, and came to be circulated and popular. It also demonstrates how the image of Steele as a sickly spinster perpetuated by the Victorian hymnologists is too limited a picture of the writer. Chapter 2 considers two labouring-class hymn writers, Susanna Harrison and Eliza Westbury, and shows how they were heavily influenced by the images and stylistic features of the earlier male hymn writers from the Evangelical tradition. Chapter 3 looks at Charlotte Elliott's writings, which were mostly for invalids, and considers how nineteenth-century Evangelicals often envisaged invalidism as a time for refinement of faith and spiritual action, and the `cult of invalidism' is contextualised. Chapter 4 considers how the writings of Dora Greenwell championed the underprivileged, and envisaged the second coming of Christ as a time for the vanquishing of evil and injustice. Chapter 5 looks at the work of Frances Ridley Havergal, one of the most popular hymn writers of the Victorian era. It considers her Evangelical background, her interest in organisations which encouraged female fellowship and ministry (such as the YWCA, the Mildmay Deaconess Institution and the Zenana missionary organisations), and the transformation of her active faith into a more contemplative one after her experience of `Consecration'. Chapter 6 examines the work and life of the Anglo-Indian hymn writer Ellen Lakshmi Goreh, and considers in further detail the opportunities offered to British women by the call for Zenana missionaries. Chapter 7 looks at the life and writings of Amy Carmichael, founder of the Dohnavur Fellowship, who spent most of her life working as a missionary in India. It shows how her hymns, which owe a debt to the Holiness Movement and its stress on the `rest of faith', and were mostly written for Indian children, are an early example of Indian inculturation
Assessing Customer's Attitudes/Expectations Toward Online Grocery Businesses
No full textCustomer attitudes toward online purchasing behavior have relied on various factors, such as product category, price, and brand name awareness of the store. Customer attitudes toward online shopping are also greatly affected by the inherent limitation of virtual shopping: quality is not easily judged on the Web, particularly for products which the Web cannot deliver sensory experiences. The purpose of this study is to examine customer attitudes toward an online store that sells “look-and-feel” products with various qualities[1] that appear to grow and receive increased attention. In particular, the author investigated i) the factors affecting customer attitudes toward the online grocery store; ii) how those factors affected the perceived ease of use (EOU) and usefulness (U); and iii) the effects of the perceived ease of use (EOU) and usefulness (U) on overall expected customer satisfaction toward the online grocery store. Surveys were conducted and the major findings suggest that customers’ purchase decisions in the electronic marketplace are affected by how online stores apply strategies to maximize customer satisfaction. Furthermore, this study provides managerial implications and offers suggestions for e-businesses.1
A Refinement of Sequential Equilibrium.
No full textThe author proposes a refinement of seq uential equilibrium for extensive form games by generalizing a restri ction proposed for signaling games in Cho and D. M. Kreps (1987). The restriction is that beliefs must not assign positive weight to the p ossibilities that can be excluded through reasonable introspection ba sed on the data available as common knowledge. A new technique is dev eloped in order to prove the existence of forward induction equilibri um, which consists of two steps. First, the author establishes the ge neric existence of forward induction equilibrium by exploiting the re sults of E. Kohlberg and J. F. Mertens (1986). Then, he shows that th e forward induction equilibrium correspondence is upper hemicontinuou s in the outcome space with respect to the changes of parameters of t he game. Copyright 1987 by The Econometric Society.
Efficacy of docosahexaenoic acid-choline-vitamin E (DHA-CHO-VE) in paediatric NASH: a randomized controlled clinical trial
No full textNon-alcoholic steatohepatitis (NASH), a progressive form of non-alcoholic fatty liver disease (NAFLD), is one of the most common hepatic diseases in children. We conducted a randomized controlled clinical trial on children with biopsy-proven NASH based on a combinatorial nutritional approach compared to placebo.
Participants were assigned to lifestyle modification plus placebo, or lifestyle modification plus a mix containing docosahexaenoic acid, choline and vitamin E (DHA-CHO-VE). Forty children and adolescents concluded the trial. The primary outcome was the improvement of liver hyperechogenicity. Secondary outcomes included alterations of ALT and other metabolic parameters. Furthermore, changes of serum bile acids (BA) and plasma fibroblast growth factor 19 (FGF19) levels were evaluated as inverse biomarkers of disease severity.
At the end of the study, we observed a significant decrease in severe steatosis in the treatment group (50% to 5%, p=0.001). Furthermore, although the anthropometric and biochemical measurements in the placebo and DHA-CHO-VE groups were comparable at baseline, at the end of the study ALT and fasting glucose levels improved only in the treatment group. Finally, we found that BA levels were not influenced whereas FGF19 levels were significantly increased by DHA-CHO-VE.
The results suggest that a combination of DHA, vitamin E and choline could improve steatosis and reduce ALT and glucose levels in children with NASH. However, further studies are needed to assess the impact of a DHA and vitamin E combination on repair of liver damage in paediatric NASH.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author
Construction of Hong-dae cultural district : cultural place, cultural policy and cultural politics
No full textCho M. Construction of Hong-dae cultural district : cultural place, cultural policy and cultural politics. Bielefeld (Germany): Bielefeld University; 2007.This dissertation examines how the process of creating the "Hong-dae cultural district" in Seoul has involved the mobilisation of various social groups and triggered the (re)institutionalisation of the meaning of "the cultural". It seeks to explicate how a cultural policy project can stimulate the emergence of social groups, which challenge existing policy provisions and laws and lead to the (re)institutionalisation of "Hong-dae culture". In so doing, the author will be able to simultaneously take account of the issues of agency, structure and culture by explicating the relationship between cultural policy and social change
Effects of resistance exercise associated with protein and carbohydrate supplementation on muscle strength and hypertrophy of untrained young men
No full textSabe-se que o o treinamento de força (TF) promove aumento da massa muscular esquelética (i.e., hipertrofia muscular). Isso ocorre devido a frequentes aumentos na síntese proteica muscular (SPM) após cada sessão de TF. Quando a sessão de TF é sucedida pela ingestão de proteínas (PROT) de alto valor biológico, a SPM é ainda mais elevada, o que contribui também para maiores ganhos de força e massa muscular. Somado à esses efeitos, a associação do consumo de carboidrato (CHO) à PROT passou por especulações no campo científico, acreditando-se em efeitos aditivos do CHO nos processos de anabolismo muscular, além de mostrar-se determinante na recuperação muscular, como a ressíntese do glicogênio, que possui papel fundamental para a realização do exercício. Entretanto, esses achados foram investigados de forma aguda, fazendo-se necessário avaliar esses efeitos a longo prazo, visto que nem sempre as respostas agudas estão associadas as adaptações crônicas, ao menos no que diz respeito a hipertrofia muscular. Objetivo: Verificar o efeito da suplementação de PROT+CHO no VTT , hipertrofia e força muscular. Métodos: Participaram do estudo 22 indivíduos do sexo masculino, com idade entre 19 e 30 anos divididos em dois grupos: suplementação PROT e suplementação de PROT+CHO, os quais realizaram treinamento de força durante 8 semanas. A área de secção transversa muscular foi avaliada por meio de imagens de Ultrassonografia (US) e a força muscular através do teste de força máxima dinâmica (1RM). Resultados: Não houve diferença significativa (p>0,05) do VTT entre os grupos suplementados com PROT+CHO comparado ao grupo PROT. Os dois grupos demonstraram aumentos significativos na força (PROT+CHO: 33.44%; PROT: 35.88%) e AST (PROT+CHO: 14.73%; PROT: 13.37%) após as 8 semanas de intervenção (Pós), quando comparado ao momento inicial (Pré). Considerações: A suplementação de CHO+PROT não promoveu melhor performance (VTT), hipertrofia muscular e ganho de força, comparado à suplementação de PROT isoladamente, após um período de 8 semanas.Is well know that resistance training (RT) promotes an increase in a fat free body mass (i.e. muscular hypertrophy). It is due to frequents increase in muscle protein synthesis (SPM) after each RT session. When RT session is succeeded by high biological value protein ingestion (PROT), SPM is much more elevated, which also contributes to greater gains in strength and muscle mass. In addition to those effects, the association of carbohydrate consumption (CHO) to PROT has been speculated in a scientific field, believing in additive effects of CHO in muscle anabolism process, besides being determinant in a muscle recuperation, like glycogen resynthesis, which has a fundamental role to exercise realization. However, those founds were investigated in acute intervention, being necessary to evaluate such effects in a long term study, since not always the acute responses are associated to chronic adaptations, at least related to muscle hypertrophy. Objective: To evaluate the effect of PROT+CHO supplementation on VTT, hypertrophy and muscle strength. Methods: Twenty-two male subjects, between 19 and 30 years, divided into two groups: PROT supplementation and PROT + CHO supplementation, who underwent strength training for 8 weeks, participated in the study. The muscle cross-sectional area was assessed using Ultrasonography (US) images and muscle strength through the maximal dynamic force (1RM) test. Results: No significant difference (p> 0.05) in VTT was found between the groups. The two groups showed significant increases in strength (PROT + CHO: 33.44%, PROT: 35.88%) and AST (PROT + CHO: 14.73%, PROT: 13.37%) after 8 weeks of intervention (Pre). Conclusions: The CHO + PROT supplementation did not promote additional effect on performance (VTT), muscle hypertrophy and strength gain, when compared to PROT supplementation alone, after a period of 8 weeks.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES
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