114,177 research outputs found
A frequency averaging framework for the solution of complex dynamic systems
No full textA frequency averaging framework is proposed for the solution of complex linear dynamic systems. It is remarkable that, while the mid-frequency region is usually very challenging, a smooth transition from low- through mid- and high-frequency ranges is possible and all ranges can now be considered in a single framework. An interpretation of the frequency averaging in the time domain is presented and it is explained that the average may be evaluated very efficiently in terms of system solutions
Diospyros decandra var. tigrina Lecomte
No full textDiospyros decandra Lour. var. tigrina Lecomte Flore générale de l’Indo-Chine 3 (7): 962 (Lecomte 1930). ACCEPTED NAME. — D. decandra Lour. TYPES. — Annam. Quang Tri Prov., Dent du Tigre [= Vietnam. Quang Tri, Dong Voi Mep], 6. V.1924, Poilane 10219 (lecto-, P [P00721472]!, designated here; isolecto-, A [A00112916]!; VNM [VNM00015160, VNM00015161]!). NOTES Lecomte (1930: 962) cited Poilane collection from Dent du Tigre in Annam. Four sheets of Poilane 10219 collected from the cited location have been located at A, P and VNM. The specimen P00721472 is the best preserved and with a detailed label and Lecomte’s annotation. This specimen is, therefore, selected here as the lectotype.Published as part of Meeprom, Nattanon, Utteridge, Timothy, Culham, Alastair & Puglisi, Carmen, 2022, Lectotypification of Indochinese Ebenaceae published by P. H. Lecomte (1925 - 1930), pp. 1925-1930 in Adansonia (3) (3) 44 (12) on page 119, DOI: 10.5252/adansonia2022v44a12, http://zenodo.org/record/648304
Diospyros dasyphylla var. oblongifolia Lecomte
No full textDiospyros dasyphylla Kurz var. oblongifolia Lecomte Flore générale de l’Indo-Chine 3 (7): 950 (Lecomte 1930). ACCEPTED NAME. — D. penangiana King & Gamble. TYPES. — Annam. Nhatrang Prov., Massif de la Mère et l’Enfant [= Vietnam. Dak Lak, Mt. Vong Phu, Chu Mu], 24.V.1923, Poilane 6826 (lecto-, P [P007216687]!, designated here; isolecto-, P [P00721668]!; VNM [VNM00015159]!). NOTES Lecomte (1930: 950) only cited Poilane collection from “ Annam: massif de la Mère et l’Enfant”. Three sheets of Poilane 6826 collected from this locality have been located at P and VNM. Among these, P00721667 is the best preserved and with an original detailed label and selected here as the lectotype.Published as part of Meeprom, Nattanon, Utteridge, Timothy, Culham, Alastair & Puglisi, Carmen, 2022, Lectotypification of Indochinese Ebenaceae published by P. H. Lecomte (1925 - 1930), pp. 1925-1930 in Adansonia (3) (3) 44 (12) on page 119, DOI: 10.5252/adansonia2022v44a12, http://zenodo.org/record/648304
Zero and root loci of disturbed spring-mass systems
No full textModels consisting of chains of particles that are coupled to their neighbours appear in many applications in physics or engineering, such as in the study of dynamics of mono-atomic and multi-atomic lattices, the resonances of crystals with impurities and the response of damaged bladed discs. Analytical properties of the dynamic responses of such disturbed chains of identical springs and masses are presented, including when damping is present. Several remarkable properties in the location of the resonances (poles) and anti-resonances (zeros) of the displacements in the frequency domain are presented and proved. In particular, it is shown that there exists an elliptical region in the frequency–disturbance magnitude plane from which zeros are excluded and the discrete values of the frequency and disturbance at which double poles occur are identified. A particular focus is on a local disturbance, such as when a spring or damper is modified at or between the first and last masses. It is demonstrated how, notably through normalization, the techniques and results of the paper apply to a broad category of more complex systems in physics, chemistry and engineering
Diospyros tamiriensis Lecomte
No full textDiospyros tamiriensis Lecomte Notulae Systematicae 4 (4): 119 (1928a). ACCEPTED NAME. — Diospyros apiculata Hiern. TYPES. — Cambodia. In montibus Tamire [= Kampot, Mt. Phnum Tamei], V.1870, Pierre 5029 (lecto-, P [P00721751]!, designated here; isolecto-, A [A00011098, A00353513]!; K [K001361754]!; L [L.2664519]!; NY [NY00334762]!; P [P00721506, P00721507, P00721508, P00721749, P00721752]!; VNM [VNM00002310, VNM00015396]!). REMAINING ORIGINAL MATERIAL. — Laos. XII.1888, Massie s.n . (P00721748!). NOTES Lecomte (1928a: 119) cited Pierre 5029 from Mount Tamire in Cambodia and Massie s.n. from Laos as the original material. Both collections have been located, of which Pierre 5029 has 12 duplicates at A, K, L, NY, P and VNM while only a single sheet of Massie s.n. is deposited in P. Here, we designate the best preserved sheet of Pierre 5029 (P [P00721751]), which has Lecomte’s determination as the lectotype. Fifteen anatomical slides of leaf, petiole and stem of Pierre 5029 are also deposited at P slide collection.Published as part of Meeprom, Nattanon, Utteridge, Timothy, Culham, Alastair & Puglisi, Carmen, 2022, Lectotypification of Indochinese Ebenaceae published by P. H. Lecomte (1925 - 1930), pp. 1925-1930 in Adansonia (3) (3) 44 (12) on page 128, DOI: 10.5252/adansonia2022v44a12, http://zenodo.org/record/648304
Diospyros eugenii var. eugenii Lecomte var. eugenii
No full textDiospyros eugenii Lecomte var. eugenii Notulae Systematicae 4 (4): 103 (Lecomte 1928a). ACCEPTED NAME. — D. martabanica C.B.Clarke. TYPES. — Annam. Quang Tri Prov., Dent du Tigre [= Vietnam. Quang Tri, Dong Voi Mep], 8. V.1924, Poilane 10375 (lecto-, P [P0072514]!, designated here; isolecto-, NY[NY00335015]!; P[P00721513, P00721515]!; SING!). REMAINING ORIGINAL MATERIAL. — Annam. Quang Tri Prov., massif de Dông Co Pat [= Vietnam. Quang Tri, Mt. ], 5.VII.1924, Poilane 11202 (P [P00721516, P00721517, P00721518]!). — Quang Tri Prov., massif de Dong Tri, sommet de Doug Tri, 950 m alt. [= Vietnam. Quang Nam Prov., Mt. , the summit], 17. VI.1924, Poilane 11018 (P [P0072519, P00721520, P00721521]!). NOTES Lecomte (1928a: 104) cited three collections from Annam in the protologue: Poilane 10375 from Dent du Tigre, Poilane 11202 from Dang co pat, and Poilane 1108 from Dangtri, all in Phanrang Province. Several sheets of Poilane 10375 and Poilane 11202 have been located at NY, P and SING. The collection Poilane 1108, held at P, is not a Diospyros, and none of the label data match in any way the protologue. We found, however, three sheets of Poilane 11018 at P, determined as Diospyros eugenii by Lecomte, with matching label data, and each annotated ‘11018 et non 1108’. Among the three gatherings, we designate here as the lectotype the specimen Poilane 10375 (P[P00721514]), which includes a detailed drawing of the male flower.Published as part of Meeprom, Nattanon, Utteridge, Timothy, Culham, Alastair & Puglisi, Carmen, 2022, Lectotypification of Indochinese Ebenaceae published by P. H. Lecomte (1925 - 1930), pp. 1925-1930 in Adansonia (3) (3) 44 (12) on pages 120-121, DOI: 10.5252/adansonia2022v44a12, http://zenodo.org/record/648304
author-bios-SRD-19-0063.R1 – Supplemental material for The Network Structure of Police Misconduct
No full textSupplemental material, author-bios-SRD-19-0063.R1 for The Network Structure of Police Misconduct by George Wood, Daria Roithmayr and Andrew V. Papachristos in Socius</p
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