5,478 research outputs found
Social Metadata for Libraries, Archives and Museums. Part 3: Recommendations and Readings
No full textRecommendations on social metadata features most relevant to libraries, archives, and museums and an annotated reading list of the literature the research group consulted during our research. We believe it is riskier to do nothing and become irrelevant to our user communities than to start using social media features
Parametric design of developable structure based on yoshimura origami pattern
No full textOrigami is an ancient art form and can be divided into rigid and non-rigid origami. Rigid origami is suitable for the design of building structures because the panels are not twisted and deformed during the folding process. Currently, rigid origami structures are generally built with steel. However, compared with natural, non-polluting wood, steel has a high energy consumption and a high environmental impact. Based on this situation, this paper designs a developable wooden building structure using the Yoshimura origami model. First, the Jacobian matrix method was used to analyze the degree of freedom of the basic unit of the Yoshimura origami pattern, following which the motion trajectory required by the target structure was obtained. Secondly, by analyzing the relationship between the plane angle α and dihedral angle θ, three interaction rules were obtained, and the formula for determining the structure size was established by using the plane angle α, dihedral angle θ, the number of valley folds n and the unit length l. Subsequently, two enhancement schemes, the quadrangle enhancement scheme and the triangle enhancement scheme, were proposed to increase the height of the structure. After comparing the deformation and failure types of origami structures based on Cross-Laminated Timber, a triangular reinforcement scheme was chosen to increase the height of the structure. Finally, a new connection method was developed that allowed the origami structure to be practically applied. This research demonstrates the possibility of developing a timber structure based on Yoshimura origami
Evidence of carrier accumulation effects on the response enhancement in thin-film electrochromic devices
No full textParaclavelia Shimizu & Broad & Yoshimura & Pitts 2022
No full textGenus Paraclavelia Haupt, 1930 Paraclavelia Haupt, 1930: 728 (type species: Pompilus caffer Kohl, 1886, by original designation and monobasic). Clavelia – Arnold, 1932: 47 [Cl. decipiens Arnold, 1932 is transferred to Paraclavelia comb. nov.] Diagnosis This genus has most of the features of Ctenocerus, but differs from the latter in the following. Female Lower frons lateral to and ventral to antennal sockets deeply depressed, median area between antennal sockets steeply receding into lowermost transverse depression, hence frontal bridge absent (Figs 6A, D, G, J, 7D). Clypeus flat and polished with deep depression across whole width of its base, depression being broader laterally than medially. Pronotal collar usually situated slightly below level of dorsum (Figs 6C, F, I, L, 7H), but rather deeply depressed in Parac. somalica (Fig. 6N). Fore femur not swollen (Figs 6F, I, 7G). Male Supra-antennal area produced anteriorly into frontal ledge overhanging antennal radicle (Fig. 8C, F, I) Lowermost frons across its whole width depressed much below level of supra-antennal area, slightly below level of clypeus, lacking any trace of frontal bridge (Fig. 8A, D, G). Description (as a complement to Haupt’s (1930) description, based on the type species) Female MEASUREMENTS. Small to fairly large wasps, 12 to 26 mm in length. HEAD. Slightly wider than high. Vertex, in anterior view, moderately to strongly raised above level of eye tops (Figs 6A, D, G, J, 7D); juncture of anterior and posterior faces subacutely carinate medially (Figs 6B, E, K, 7B, E). Frons broad, its half much broader than eye, usually polished; surface of upper frons gently and longitudinally arched. Ocelli forming an obtuse-angled triangle (Figs 6B, E, H, J, 7E). Clypeus narrower than LID, lamelliform, its apical margin truncated, convex or concave (Figs 6A, D, G, J, 7D). Labrum small, partly concealed beneath clypeus, its apical margin truncate (Figs 6D, 7D). Malar space short (Figs 6C, F, I, L, 7H). Scape compressed laterally, curved outward with lateral face concave (Figs. 6B, E, K, P, 7E), mesal face usually with longitudinal carina (Fig. 6O, arrow). Mandible usually stout with anterior face flattened and polished (Figs 6A, D, 7D). Maxillary palpus short, palpomeres 4–6 not much shorter or longer than palpomere 3. Gena, in dorsal view, moderately developed but not swollen (Figs 6B, E, K, 7E). Occipital suture obsolete below, its uppermost portion situated immediately below vertex crest (Figs 6K, 7B). MESOSOMA. Pronotum as long as, or longer than mesoscutum at middle (Fig. 7B); streptaulus obsolete dorsally; declivity usually short, gently or steeply sloping (Figs 6C, F, I, L, 7H) (somewhat long and almost vertical in Parac. somalica (Fig. 6N)); dorsum flattened medially, gradually sloping anteriorly, its lateral margin slightly convex (Figs 6B, E, H, K, 7B, E); juncture of dorsum and lateral face bluntly carinate; lateral face vertical, traversed by L-shaped groove (posterior part of streptaulus) (Figs 6C, F, I, L, N, 7H) as in Ctenocerus. Mesoscutum flattened above with parapsides narrowly raised posterolaterally; parapsidal sulcus distinct (Fig. 7B), divergent anteriorly. Scutellum scarcely raised above level of mesoscutum (Figs 6C, 7H). Propodeal dorsum with stigma from anterior margin of propodeum twice its own length or more (Fig. 7B); surface with transverse rugae, those becoming stronger posteriorly; declivity flattened, sometimes delimited from dorsum by carina (one of rugae); surface arcuately or obliquely rugose. WINGS. FW with three SMCs (Fig. 7C). Pterostigma as long as or longer than cross-vein 2 r-rs at bottom. Marginal cell lanceolate, acute at apex. Second abscissa of vein M (basal vein) curved. Last abscissa of vein M not attaining outer wing margin. Discal cell 1 usually with indistinct membranous irregularity (fenestra) basally. Cross-vein cu-a originating distal to separation of vein M+CuA, oblique to vein A. HW cross-vein cu-a originating basal to, at (Fig. 7C), or distal to fork of vein M+CuA, confluent with vein A, forming smooth arc. LEGS. Apical margin of fore tibia usually with short, stout, decurved spine mesally (Figs 6M, 7F, arrow) (apical spines short, stout, but not decurved in Parac. caffer). Fore tarsomeres 2-4 combined much shorter than fore tarsomere 1. Mid and hind femora with distinct basal ring. Mid tibia with short spines dorsally. Hind tibia with spines short or rudimentary dorsally and latero- and dorsoapically (Fig. 7J). Tarsomere 5 with several short, irregularly arranged spines, one or two spines, or lacking spines beneath. Orbicula small, narrower than 0.6 × width of tarsomere 5, with orbicular pecten consisting of a few rather strong, straight setulae, some of them being as long as, or longer than orbicula itself. All tarsal claws bifid. METASOMA. T1 not petiolate, abruptly narrowing anteriorly or barely petiolate (Fig. 7A). S2 with transverse groove, this being sometimes fine and almost obsolete (Fig. 7I). S6 compressed laterally with or without median carina. Male MEASUREMENTS. Much smaller and slenderer than female, 6–15 mm. HEAD. Broader than long. Vertex strongly convex above level of eye tops, chevron-shaped (Fig. 8A, D, G); juncture of anterior and posterior faces broadly rounded (Fig. 8B, E, H). Frons with numerous long pubescence and setae. Clypeus distinctly narrower than LID (Fig. 8A, G), trapezoid or rectangular, its surface convex, covered with long pubescence and setae. Malar space longer than in female. Scape short (Fig. 8B, F, H–I), not compressed laterally, with numerous setae, those on ventral side longer and denser than elsewhere. Flagellum uni- or biramous (Fig. 8F, K), catenulate (Fig. 8J), or in a few species, basal and apical ends of each flagellomere contiguous all round (Arnold 1932: 67). Mandible short (Fig. 8A) with small tooth subapically on inner margin; anterior face flattened and polished. Occipital suture complete (Fig. 8E), its uppermost portion situated immediately or rather deeply below vertex crest. MESOSOMA. Pronotum shorter than mesoscutum at midline (Fig. 8E); collar situated deeply below level of dorsum (Fig. 8C, F, I); streptaulus present (Fig. 8E); declivity not short, flattened and vertical, its juncture with dorsum narrowly rounded; dorsum transversely convex and declivous, usually gradually narrowing anteriorly (Fig. 8B, E, H), truncate anteromedially, with numerous long pubescence and setae, its juncture with lateral vertical face rounded; L-shaped groove on lateral face sometime obscure. Mesoscutum with parapsides narrowly reflexed posterolaterally. Disc of scutellum triangular, slightly raised above level of mesoscutum. Metanotum declivous. Metapostnotum longer than in female. Propodeum densely punctate, sometimes finely and transversely rugulose or minutely reticulate-rugulose, and covered with long pubescence; dorsum much longer than declivity, parallel-sided, gradually sloping posteriorly; declivity not delimited from dorsum. WINGS. HW cross-vein cu-a originating usually at or distal to separation of vein M+CuA, confluent with vein A, forming long smooth arc. LEGS. Apical margin of fore tibia without short, stout, decurved spine mesally. Fore femur slender (Fig. 8F, I), thinner than mid femur. Fore tarsomeres 2–4 combined as long as or shorter than fore tarsomere 1. Fore, mid and hind orbiculae similar to those of female, or hind orbicula remarkably small, its pecten indistinct. Fore and mid tarsal claws bifid; hind tarsal claw bifid or edentate, rectangularly bent subapically, and both claws parallel to each other or slightly divergent. METASOMA. T1 not petiolate, gradually narrowing anteriorly. S2 without transverse groove. S6 with small lateral hook posterolaterally. Subgenital plate comparatively large, not compressed laterally. Distribution Africa (Afrotropical Region) and the Arabian Peninsula (Oman).Published as part of Shimizu, Akira, Broad, Gavin, Yoshimura, Jin & Pitts, James P., 2022, First records of the spider wasps Ctenocerus Dahlbom and Paraclavelia Haupt from Asia, with discussions on the systematics of Ctenocerinae (Hymenoptera: Pompilidae), pp. 101-131 in European Journal of Taxonomy 845 (1) on pages 115-118, DOI: 10.5852/ejt.2022.845.1957, http://zenodo.org/record/725888
昆虫食・昆虫料理をめぐる心理的要因の検討に向けて
No full textOne of the authors, S.Uchiyama, who is conducting bug-eating meetings for several years, has a naive question about the psychological factors why the participants in his meetings are interested in bug-eating. In Section 1, Uchiyama points out the importance of bug-eating and of its popularization.
He explains that insects are rich in nutrition and many are even more nutritionally balanced than meat or fish. In Section 2, the first author, Yoshimura, introduces a psychological study to catch the difference of the attitudes and the senses to the bug-eating between the participants in Uchiyama’s meetings and the general public who have not yet participated in the meetings. Among the conceivable methods, a principal component analysis is used in the present research. Different from the general public, the attitudes and the senses of the participants can not be put into one major component. Yoshimura discusses that the participants in the meetings have multi-phasic attitudes and senses to the bug-eating
Probolomyrmex vieti Eguchi, Yoshimura & Yamane, 2006, sp. nov.
No full textProbolomyrmex vieti sp. nov. (Figs. 7A-F, 9G, 10G, 14A-F, 15G, H, 16J-L) Probolomyrmex sp. 1: Ito et al., 2001: 403 (species list). Holotype: worker belonging to colony Eg04-VN-783, South Cat Tien N. P. (behind the headquarters, <160 m alt.), Dong Nai, S. Vietnam, 23/x/2004, Eg (IEBR).Paratypes: 7 workers from the same colony to which the holotype belongs (MCZC, MHNG, ACEG, SKYC). Nontype material examined. THAILAND: Nakhonratchasima: Khao Yai N. P. [general coll.: SKY, 29/v/2000]; INDONESIA: W. Java: Kebun Raya, Bogor [general coll.: FI, i/1993 (including male); colony: FI92-305 (including queen), FI93-60 (including queen)]. Eguchi's informal species code " Probolomyrmex sp. eg-2" and Yamane's " Probolomyrmex sp. 3" apply to this species. Worker. HL, 0.51-0.57 mm; HW, 0.33-0.35 mm; SL, 0.29-0.35 mm; CI, 61-65; SI, 88-100; WL, 0.69-0.79 mm; PW, 0.25-0.28 mm; DPtW, 0.16 mm; DPtI, 57-64; PtH, 0.25-0.27 mm; PtNL, 0.21-0.25 mm; LPtI, 78-100 (N=5). Body ferruginous brown. Head in full-face view with weakly convex sides and very shallowly concave occipital border. Eye absent. Antenna relatively short; relative lengths of antennal segments II-XII as in Fig. 10G; segment III shorter than IV. Dorsal outline of mesosoma straight; posterior margin of dorsum of propodeum in dorsal view moderately concave; posterior face of propodeum margined laterally with a well-developed translucent lamella which in profile is weakly produced posteriad but not forming a conspicuous propodeal spine. Petiole including subpetiolar process a little higher than long, in profile with relatively steep anterior slope and straight posterior outline (above the articulation with gaster); posterodorsal margin of petiolar node in dorsal view almost straight (very weakly concave medially in a specimen from Thailand); subpetiolar process developed; its anteroventral portion with a translucent projection/lobe which extends anteroventrad and often with a narrow apex; posteroventral portion of subpetiolar process forming an angle. Abdominal segment III (gastral segment I) in profile relatively short, gently narrowed anteriad in the anterior 2/3; abdominal sternum III weakly (in the type series) or very weakly (in the worker from Indonesia) convex behind the midlength. Queen (based on nontype dealate and teneral alate queens). HL, 0.51 mm; HW, 0.35 mm; SL, 0.30 mm; EL, 0.09 mm; CI, 69; SI, 86; EI, 26; WL, 0.74 mm; PW, 0.27 mm; DPtW, 0.16 mm; DPtI, 59; PtH, 0.26 mm; PtNL, 0.20 mm; LPtI, 77 (N=1). Body ferruginous brown. Head in full-face view elongate, with very weakly convex sides and almost straight or very weakly concave occipital border. Eye shorter than the width of apical antennal segment. Antenna relatively short; scape when laid backward at most reaching the level of anterior margin of median ocellus; relative lengths of antennal segments II-XII as in the worker (see Fig. 10G); segment III shorter than IV. Pronotum large; mesoscutum ca. 1.25-1.35 times as long as broad, in profile very weakly convex; notauli absent; parapsidal lines very fine; scuto-scutellar suture fine, very weakly and roundly curved posteriad; scutellum in profile with relatively gentle posterior slope; axilla poorly separated from scutellum by an obscure impression but not by suture; mesopleuron fully divided by a suture into anepisternum and katepisternum (but suture sometimes absent in its posteriormost part); median portion of metanotum abruptly raised with the dorsum small in size and almost rectangular in shape; suture between metepisternum and propodeum absent; a weak depression present dividing metepisternum into anepisternum and katepisternum; orifice of metapleural gland small, opening posterolaterad; posterior margin of propodeal dorsum in dorsal view moderately and broadly concave; posterior face of propodeum margined laterally with a well-developed translucent lamella which in profile is weakly produced posteriad but not forming a conspicuous propodeal spine in upper portion. Petiole including subpetiolar process a little higher than long, in profile with relatively steep anterior slope and straight posterior outline (above the articulation with gaster); posterodorsal margin of petiolar node in dorsal view almost straight; subpetiolar process developed; the anteroventral portion of the process more or less projecting or at least forming a round corner, and the posteroventral portion forming an angle; ventral edge of the process thin. Abdominal segment III (gastral segment I) in profile short, gently narrowed anteriad in the anterior 2/3; abdominal sternum III very weakly convex behind the midlength. Wing structure and venation as in the male. Hind wing with three hamuli. Male. HL, 0.39-0.41 mm; HW, 0.43-0.45 mm; CI, 110; HD, 0.34 mm; HDI, 83-87; EL, 0.20 mm; SL, 0.24 mm; SI, 53-56; MstlL, 0.16 mm; MstlW, 0.16 mm; MstlI, 100; WL, 0.75 mm; PtNL, 0.16-0.18 mm; PtH, 0.17-0.18 mm; LPtI, 94-100 (N=2, but N=1 for WL). Head in lateral view relatively thin (HDI<90); protrusion of the frontoclypeal region relatively short so that antennal insertion is situated on apical portion of its dorsal surface. Frontal carina high, distinctly exceeding posterior margin of antennal insertions in fullface view. Eye moderately widened ventrally. Antennal flagellum relatively short, slightly widened apically; antennal segment III shorter than segment II; segment XI (the third from apex) broader than long; ventrolateral surface of the apical segment widely and strongly concave. Mandible elongate-triangular, with two small dents and a single strong apical tooth on its masticatory margin; the basal angle distinct. Palpal formula: maxillary 4, labial 2; maxillary palp relatively short; the third palpomere short, slightly longer than the second, and the apical distinctly longer than the third. Pronotum in profile slightly higher than mesoscutum; metanotum moderately produced posteriorly, and a suture separating it from mesoscutellum strongly notched; anepisternum of metapleuron separated from metakatepisternum and propodeum by a deep furrow; metakatepisternum clearly separated from propodeum; dorsal margin of propodeum rounded, not forming a distinct angle with the posterior slope. With the mesosoma in dorsal view, mesonotum lacking notauli; parapsidal lines distinct; axillae distinct; mesoscutellum longer than broad; declivitous face of propodeum not concave, edged laterally with weak sculpture. Petiole in lateral view with a short peduncle differentiated from node; node distinctly shortened, with steep anterior slope and gentle posterior slope; posterodorsal margin rounded; subpetiolar process broadly developed and its apex blunt. Abdominal sternum IX short; its apical margin transversely flat, not pointed medially. Genitalia not retractile. With the phallus in lateral view, the basal ring moderately long and its dorsal margin nearly straight; basiparamere with the dorsal margin suddenly raised in its basal portion, and posterodorsal slope gentle; digitus volsellaris simply curved ventrally in its apical portion; cuspis volsellaris broadly developed; penis valve wide and nearly straight, and its apical portion blunt. Paramere thin; its expanded inner faces directed ventrally, with its apical portion not curved. On fore wing, costa and radius apical to stigma vestigial; Rsf2 and Rsf3 completely absent; radial sector never reaching costal margin; Mf1, Rs+M and media apical to Rs+M completely absent; cu-a cross vein absent. On hind wing, Rsf4+5 vestigial; jugal lobe absent. Recognition. In the worker, this species is barely separated from P. greavesi Taylor described from Capital Territory and S. Queensland, Australia (1 paratype worker and 1 paratype queen deposited in MCZC were examined), but the anteroventral portion of subpetiolar process projects anteroventrad in the worker of P. vieti. In the male, this species is rather clearly separated from P. greavesi by 1) masticatory margin of mandible with two teeth in addition to apical tooth, 2) dorsal margin of the node that is declining posteriorly and clearly divided from anterior and posterior faces, and 3) a broad and strong ventrolateral concavity on the apical segment of antenna. Distribution. Known from the Indo-Chinese Peninsula and Java.Published as part of Eguchi, K., Yoshimura, M. & Yamane, S., 2006, The Oriental species of the ant genus Probolomyrmex (Insecta: Hymenoptera: Formicidae: Proceratiinae)., pp. 1-35 in Zootaxa 1376 on pages 29-3
Elastic constants of polycrystalline L10-FePt at high temperatures
No full textNakamura N., Yoshimura N., Ogi H., et al. "Elastic constants of polycrystalline L10-FePt at high temperatures", Journal of Applied Physics, 114(9), 093506 (2013) https://doi.org/10.1063/1.4819974.Elastic constants of polycrystalline L10 FePt are studied from room temperature up to 1073 K by the electromagnetic acoustic resonance. The longitudinal-wave stiffness and the bulk modulus show intermediate values of polycrystalline Fe and Pt, but the shear modulus and Young's modulus show larger value than those of polycrystalline Fe and Pt. The Blackman diagram indicates that L10 FePt exhibits a tendency toward covalent-bond characteristic. Strong anharmonicity of the interatmoic potential is confirmed from the temperature coefficient of the bulk modulus. © 2013 AIP Publishing LLC
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Using Depleted Uranium to Shield Vitrified High-Level Waste Packages
No full textThe underlying report for this paper evaluates options for using depleted uranium as shielding materials for transport systems for disposal of vitrified high-level waste (VHLW). In addition, economic analyses are presented to compare costs associated with these options to costs, associated with existing and proposed storage, transport, and diposal capabilities. A more detailed evaluation is provided elsewhere. (Yoshimura et al. 1995.
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