339 research outputs found
Planar Photonic Crystal Nanocavities with Active Quantum Nanostructures
No full textExtreme photon localization is applicable to constructing building blocks in photonic systems and quantum information systems. A finding fact that photon localization in small space modifies the radiation process was reported in 1944 by Purcell, and advances in fabrication technology enable such structures to be constructed at optical frequencies. Many demands of building compact photonic systems and quantum information systems have enhanced activities in this field. The photonic crystal cavity has potential in providing a cavity that supports only the fundamental mode of (lambda/2n)^3 together with good confinement of light within a resonator. This thesis addresses experimental and theoretical aspects of building such photon localization blocks embedding active quantum nanostructures in a planar photonic crystal platform. Examples given in this thesis are (1) quantum dot photonic crystal nanolasers, (2) high-speed photonic crystal nanolasers, and (3) light-matter coupling in a single quantum dot photonic crystal cavity system.
(1) A combination of quantum dots and photonic crystal nanocavities provides chirpless high-speed nanolasers. Room temperature low-threshold lasing action was demonstrated from a coupled cavity design (0.7 - 1.2(lambda/n)^3) embedding InAs/GaAs self-assembled quantum dots. The nanolasers showed small (absorbed) pumping power threshold as sub-20 microW and high spontaneous coupling factors of 0.1. Single quantum dot lasing is likely to occur both by proper alignment of the single quantum dot relative to geometries of photonic crystals and by a narrow QD emission line in the high-Q localized mode.
(2) Enhancement of radiation process in a small cavity was used to demonstrate high frequency relaxation oscillation up to 130 GHz. Built-in quantum well saturable absorbers enable us to probe the relaxation oscillation of such small lasers.
(3) Onset of intermediate light-matter coupling was demonstrated in a single quantum dot photonic crystal cavity system. A tripling in Q/V (quality factor divided by mode volume) is found to enable photons to start a strong interaction with a single quantum dot.</p
Dispatch, Smith and Jewell Counties
No full textHocking, Jillian, “Dispatch, Smith and Jewell Counties,” Chapman Center Research Collections, https://ccrsresearchcollections.omeka.net/items/show/5.Located on the border of both Smith and Jewell Counties, tiny Dispatch was founded by the Dutch Reformed Church. When the church split along doctrinal lines, two cemeteries evolved for two different church populations. The main church was founded in 1871; the split occurred in 1872. The landscape of this area still reveals its early history. The bleak, flat prairies stretching around a large church and its two graveyards tell a tale of dissent and survival. The author, connected through family to these Dutch settlers, provides photographs and stories
Humane Society v. Jewell: The Court Cries Wolf
No full textIn Humane Society of the United States v. Jewell, a federal district court invalidated the Endangered Species Act (ESA) delisting of wolves in the western Great Lakes (WGL) Distinct Population Segment. This decision culminated a long history of litigation over wolves in the WGL region, and has generated a political backlash, with congressional attempts to delist wolves and to weaken the ESA itself. The author argues that the Jewell court\u27s analysis is erroneous on several central legal issues. As a policy matter, delisting the WGL wolves and returning them to state control should increase social tolerance of wolves, which is key to the long-term survival of the wolf
Senatorial Politics and Foreign Policy
No full textBipartisanship has become so associated with the conduct of foreign policy that partisanship has virtually been forgotten. In this persuasive study of senatorial politics, Malcolm E. Jewell reasserts the importance of partisanship, arguing that increased party responsibility is the best guarantee for the establishment of sound policy and for the continued support of policy once established. The author bases his conclusions on a study of the Senate during the Truman and Eisenhower administrations.
Malcolm E. Jewell is in the department of political science at the University of Kentucky.https://uknowledge.uky.edu/upk_political_science_american_politics/1013/thumbnail.jp
Hemiandrus superba Jewell, 2007, n. sp.
No full textHemiandrus superba n. sp. (Figs. 2–3; 6 D) Diagnosis. An exceptionally large (35–45mm), heavy-bodied and colorful Hemiandrus with the following combination of traits: 3 rd segment of maxillary palp lacks pilosity, 4 th segment pilose on distal 55 %; 4 th tarsal segment setose on distal 5 %; 24–26 antennomeres; frons rugose; pronotum grey with large rusty-red dorsal patch and cream margins; abdomen strongly banded with black and cream-grey. Most similar to H. focalis which differs by its smaller size (<34mm), frons only very weakly rugose, and pronotum black with cream margins. Description. Size. Adult female 43–45mm (n = 2), adult male 35–37mm (n = 2), penultimate instar male 33.7–34mm (n = 2). Head. Frons rugose, otherwise head shiny but microsculptured, rusty-red except margin adjacent to pronotum black, labrum black, mandibles with some black on inner margins, and ventral surfaces cream; palps cream; antennae longer than body, uniform light brown except pedistal with dark brown shadings and scutellum sometimes rusty-red, 24–26 antennomeres; eyes black; 5 th segment of maxillary palp 100 % pilose, 4 th segment 55 % pilose, remainder of 4 th segment and segments 1–3 with widely spaced setae. Thorax. Pronotum shiny but microsculptured; slightly broader than long (ratio: 1.34); margins cream, remain- der light grey with a large rusty-red dorsal patch. Meso- and metanotum shiny and with microsculpturing on posterior margins, black with posterior and lateral margins cream. Sternum ranging from cream with dark brown shadings through to predominantly dark brown. Legs. Relatively short (hind tibia 1.5–1.6 x head width). Coxae and trochanters cream. Femorae yellow-cream at base merging gradually with orange-red and rusty-red; lacking spines. All tibiae cream with dark grey basal patch. Protibiae with cream articulated spines arranged in asymmetrical form, as follows: 4 apicals; 1 positioned medially on pro-dorso-lateral angle; none on retro-dorso-lateral angle; 4 spaced evenly along proventro-lateral angle; 4 spaced evenly along retro-ventrolateral angle. Mesotibiae with cream articulated spines arranged in asymmetrical form as follows: 4 apicals; 2 spaced evenly across lower 2 / 3 of prodorso-lateral angle; 3 spaced evenly across retrodorso-lateral angle; 4 spaced evenly along retro-ventrolateral angle; 4 spaced evenly along pro-ventrolateral angle. Metatibiae with cream spines arranged as follows: 4 articulated apicals; 2 very large articulated subapicals on pro- and retrodorso-lateral angles; 7–8 fixed spines evenly spaced along prodorso-lateral angle; 8–9 fixed spines evenly spaced along retrodorso-lateral angle; 4–5 asymmetrical pairs of minute articulated ventrals with the basalmost retro spine and distal-most pro spine often absent. Tarsal segments 1–2 cream above, segments 3–4 grey above; tarsi 4 -segmented, 1 st segment with protruding foot-pad divided into two, 2 nd and 3 rd segments each with a single protruding foot pad, 4 th segment with non-protruding footpad and on pro- and mesotarsi is as long as first 3 segments combined, but on metatarsi the 1 st segment is also elongated, of similar length to 4 th, all ventral footpads grey; tarsi densely setose only on distal 5 % of 4 th segment. Abdomen. Shiny; tergi 1–9 black with broad posterior border of light grey and/or cream, cerci cream, sometimes with dark shadings, sternites cream to light orange with black anterior margins, pleural membrane cream. Female. Ovipositor yellow at base, becoming deep rusty-red, 0.5 x body length; cerci elongate, tapering, rugose, baring dense short setae and sparse very long setae, except for tip which is bare and almost smooth; posterior margins of tergi 1–10 simple, posterior margins of sternites 1–5 and 7 simple, sternite 6 with broad but weak median depression, subgenital plate triangular and apex with a short hard spine. Male. Tergite 9 expanded medially to form a broad protruding lobe; tergite 10 with a pair of short black, blunt spines, and the posterior margin of tergite 9 has a slight inward depression behind each of these to accommodate them. Cerci as for female except long setae restricted to basal quarter, and tips pilose. Nymphs. Penultimate instar colored as for adult; earlier nymph stages not available for this study. Type data. HOLOTYPE: adult female (43mm), Sinbad Gully, Fiordland National Park, New Zealand, 1200m a.s.l., NZMS 260 D 40 20982 56051, March 2007, Tony Jewell. PARATYPES: 1 adult female, 2 adult males, 2 penultimate instar male nymphs, same collection data as Holotype. Additional material examined. 1 adult female examined from photographs taken at the Type locality in March 2004. All material examined here is from the Type locality at 1100–1200m a.s.l., however in March 2004 several specimens were also observed at 1500m a.s.l. atop a vertical rock wall that borders the Type locality. Etymology. The name is derived from the adjective superb (‘impressive in size or appearance’) in reference to the large size and bright coloration of the species. Distribution. So far known only from the head of the Sinbad Gully in northern Fiordland (44 ° 38 ' S, 167 ° 48 ' E), between 1100–1500m a.s.l. Natural history. Inhabits rocky alpine grasslands/herbfields in a cool, wet climate (rain and snow precipitation est. 10,000 +mm p.a. + waterfall mist). Nocturnal, most active on damp cloudy nights. By day occupies tunnels in the ground which are often excavated beneath rocks and are thus uncovered when the rock is lifted. At the lower end of its altitudinal range H. superba is sympatric with H. maculifrons and H. nitaweta. Comments. At 35–45mm (v. 12–33 mm) in length Hemiandrus superba is distinctly larger than its known congeners. In this respect it is more comparable with New Zealand’s other two widespread Anostostomatid genera, i.e. the tree weta (genus Hemideina Walker) and giant weta (genus Deinacrida White), most of which are about 40–50mm (e.g. Gibbs, 1999). However, an absence of protibial ear drums and the minute size of the dorsal metatibial spines each provide ready distinction from the members of these genera and support the status of H. superba as an otherwise typical Hemiandrus. The relationships of H. superba are unresolved but tentative comparison can be drawn with H. focalis (Fig. 6 B) and its undescribed relatives. H. focalis is the next-largest species at up to 33mm (pers. obs.) and the general patterns of color, spines and of setae are not dissimilar. Hemiandrus nitaweta n. sp. (Figs. 4–5; 6 C) Diagnosis. A large (31mm), brightly colored Hemiandrus with the following combination of traits: ovipositor half as long as body; 3 rd segment of maxillary palp lacks pilosity, 4 th segment pilose on distal 45 %; 4 th metatarsal segment setose on distal 5 %; frons smooth; 17–18 antennomeres; colored black with red tibiae except pronotum red with black margins, and thin vertical white stripes on the sides of the abdomen. Most similar to H. fiordensis which differs by having 4 th segment of maxillary palp 100 % pilose and 3 rd segment 33 % pilose, 4 th metatarsal segment setose on distal 20 %, and pronotum coloration brown to orange-brown. Description. Size. Adult female 31mm (n = 1), penultimate instar female 27mm (n = 1). Head. Shiny, predominantly black but frons partially or fully red, clypeus white, mandibles with some red, and ventral surfaces white; palps white to light grey; antennae longer than body, flagellum segments alternating (as singles or pairs) brown and cream, pedistal cream, scape cream with dark brown shadings, 17–18 antennomeres; eyes black; 5 th segment of maxillary palp 100 % pilose, 4 th segment 45 % pilose, remainder of 4 th segment and segments 1–3 glabous. Thorax. Pronotum shiny, bright red with black margins and black sometimes also extending along midline; slightly broader than long (ratio: 1.17). Meso- and metanotum shiny, black with a small whitish patch near each anterior corner. Sternum dark brown. Legs. Of moderate length (hind tibia 2.0– 2.1 x head width). Coxae white with restricted dark brown patches; trochanters white. Pro- and mesofemorae white with expansive orange-red shadings and distally dark brown shadings; lacking spines. Metafemorae orangered with dark brown shading at apex. Protibiae dark brown with white articulated spines arranged in weakly symmetrical form, as follows: 4 apicals; 1 positioned medially on prodorso-lateral angle; none on retrodorsolateral angle; 4 spaced evenly along proventro-lateral angle; 4 spaced evenly along retroventro-lateral angle. Mesotibiae dark brown with white articulated spines arranged in weakly symmetrical form as follows: 4 apicals; 2 spaced evenly across lower 2 / 3 of prodorso-lateral angle; 3 spaced evenly across retrodorso-lateral angle; 4 spaced evenly along proventro-lateral angle; 4 spaced evenly along retroventro-lateral angle. Metatibiae blackish-brown dorsally, becoming orange-red on ventral and sometimes lateral surfaces; with white spines arranged as follows: 4 articulated apicals; 2 very large articulated subapicals on pro- and retrodorsallateral angles; 7 fixed spines evenly spaced along prodorso-lateral angle; 6 or 7 fixed spines evenly spaced along retrodorso-lateral angle; 3 articulated, evenly spaced ventrals, sometimes with a 4 th paired beside the basal-most of these. Tarsi dark brown above, whitish below; 4 -segmented, 1 st segment with large protruding foot-pad divided into two, 2 nd and 3 rd segments each with a single large protruding foot pad, 4 th segment with non-protruding footpad; 1 st segment on pro- and mesotarsi is as long as first 3 segments combined, but on metatarsi the 1 st segment is also elongated, of similar length to 4 th segment; protarsi densely setose only on distal 20 % of 4 th segment, and likewise mesotarsi on distal 10 % and metatarsi on distal 5 %. Abdomen. Shiny, predominantly black but tergi 1–7 with vertical white stripes on lateral aspects only, cerci white, sternites dark brown with light brown posterior margins, pleural membrane dark brown. Female. Ovipositor red, sometimes with black shadings at base, 0.5 x body length; cerci elongate, tapering, rugose, baring numerous long setae except for tip which is bare and smooth; posterior margins of tergi 1–8 simple, posterior margin of 9 th tergite with a very weakly expanded median lobe, posterior margin of 10 th tergite with gradual but large depressions medially and before cerci; posterior margins of sternites 1–7 simple, subgenital plate triangular and apex with a short soft spine. Nymphs. Small nymphs colored brown and black (Fig. 5 D), developing adult coloration at around 20mm (Fig. 5 C). Type data. HOLOTYPE: Adult female (31mm), Sinbad Gully, Fiordland National Park, New Zealand, 1200m a.s.l., NZMS 260 D 40 20982 56051, March 2007, Tony Jewell. PARATYPES: 2 female nymphs (27mm and 19.3mm, respectively), same collection data as Holotype. Distribution. So far confirmed only from the Sinbad Gully in northern Fiordland (44 ° 38 ' S, 167 ° 48 ' E), between 1000–1200m a.s.l. However, Hemiandrus specimens with color traits identical to H. nitaweta have been recorded from Treble Mountain in south-west Fiordland (46 °00' S, 167 ° 50 ' E, C. Rickard pers. com.; photos examined by author) suggesting a broad distribution in the west of the Park, but confirmation must await the collection of voucher material. Additional material examined. 2 adult females and 1 male nymph, examined from photographs taken at the Type locality in March 2004. 1 small nymph (about 10mm) observed at the Type locality in March 2007. Etymology. This brilliantly colored species is named for Anita (‘ Nita) Davis who brings much color to the author's life, combining her first name with weta, i.e. the Maori word for the Anostostomatidae. Natural history. Inhabits rocky alpine grasslands/herbfields and vegetated rock bluffs in a cool, wet climate (rain and snow precipitation est. 10,000 +mm p.a. + waterfall mist). Nocturnal, most active on damp cloudy nights; specimens often forage in low vegetation, especially Astelia sp., but are also seen on groundlevel vegetation such as Muehlenbeckia axillaris. By day inhabits tunnels in the ground but unlike H. superba these are rarely excavated beneath rocks. Sympatric with H. maculifrons and H. superba. Comments. At up to at least 31mm in length, H. nitaweta ranks among the larger species of Hemiandrus, exceeding H. sp. "elegans" (30mm, Johns 2001) and approaching H. focalis (some from western Otago/Southland attaining 33mm, pers. obs.). The relationships of H. nitaweta are unresolved but the general pattern of the coloring and the descending extent of setae coverage on the 4 th pro-, meso- and metatarsal segments draws tentative comparison with H. fiordensis (Fig. 6 A).Published as part of Jewell, Tony, 2007, Two new species of Hemiandrus (Orthoptera: Anostostomatidae) from Fiordland National Park, New Zealand, pp. 49-57 in Zootaxa 1542 on pages 50-56, DOI: 10.5281/zenodo.17789
Psychometric Evaluation of the Occupation-Centered Intervention Assessment
No full textAbstract
Date Presented 3/31/2017
The purpose of this study was to evaluate the validity, utility, and reliability of the Occupation-Centered Intervention Assessment for interventions used with rehabilitation clients in U.S.-based skilled nursing facilities.
Primary Author and Speaker: Vanessa Jewell
Contributing Authors: Noralyn Pickens</jats:p
Impact on Quality of Life Following the Implantable Miniature Telescope Procedure: A Mixed-Method Pilot Study
No full textAbstract
Date Presented 3/31/2017
Individuals with end-stage age-related macular degeneration were surveyed regarding the impact of the Implantable Miniature Telescope procedure on quality of life and treatment satisfaction. A reliance on previous coping strategies was shown to have a positive influence on both variables.
Primary Author and Speaker: Tara Boehne
Additional Authors and Speakers: Vanessa Jewell</jats:p
Fluidic and Polymeric Integration and Functionalization of Optical Microresonators
No full textOptical resonators are structures that spatially confine and temporally store light. The use of such resonators continues to permeate throughout society as improvements in their design and fabrication qualify them to fulfill an ever-increasing array of technological and scientific applications. Traditionally, resonators have primarily been used in lasers and as filters, and more recently have been utilized in other areas including chemical sensing, spontaneous emission modulation, and quantum electrodynamics experiments. In many of these applications, the functionalities of the resonators are solely derived from the geometry and material composition of the resonators themselves. The central theme of this thesis is the investigation of further increasing a resonator's functionality through its integration with fluidic and polymeric materials.
The thesis begins with an investigation of integrating silicon ring resonators with electro-optic polymer and liquid crystal in an effort to tune the resonators' resonant wavelengths. Although the electro-optic polymer efforts are a failure, we are able to electrically tune the rings' resonances using electrodes and the reorientation of liquid crystal surrounding the resonators. We then take the knowledge and experience acquired from these experiments and pursue the functionalization of photonic crystal laser resonators, a relatively new class of microresonators constructed from a thin slab of InGaAsP quantum well material with a periodic array of holes etched through the slab. To this end, we first infiltrate the porous resonators with liquid crystal and construct liquid crystal cells around the devices. We are then able to tune the lasing wavelengths by reorienting the liquid crystal with a voltage applied across the cell. Next, we devise a new photonic crystal cavity designed to optimally interact with infiltrated birefringent materials, by supporting two orthogonally polarized high-Q modes. Again, we infiltrate the cavity with liquid crystal, but this time optically control the liquid crystal orientation with a photoaddressable polymer film. By doing so we are able to realize a fundamentally new laser tuning method by reversibly Q-switching a resonator's lasing mode between the two cavity modes and thereby control the laser's emission wavelength and polarization. The successful fluidic and polymeric integration with optical resonators presented in this thesis demonstrates some of the possible synergies that can be obtained with such integration and suggests that further enhancements in resonator functionality is possible.</p
Methylene chloride
No full text"Prepared by Syracuse Reseach Corporation under contract no. 205-1999-00024.Chemical manager(s)/author(s): Jewell D. Wilson, ATSDR, Division of Toxicology, Atlanta, GA; Margaret E. Fransen, Fernando Llados, Mona Singh, Gary L. Diamond, Syracuse Research Corporation, North Syracuse, NY.Includes bibliographical references (p. 213-264).2000205-1999-000241117
Levi and Jewell Terrill Collection
No full textLevi Maurice Terrill (b. 1899) was born in Moberly Missouri. He joined the Walnut Grove Baptist Church and remained a member there until he came to Atlanta, Georgia in 1922 to enter Morehouse College. He worked in the ministry throughout his career at Tremont Temple Baptist Church, Union Baptist Church, First Bryan Baptist Church, and lastly the Zion Hill Baptist Church in 1943. He remained at Zion Hill until his death, January 31, 1971. His activities aside from the active pastorate include serving as Vice President of the General Missionary Baptist Convention of Georgia. He was also the first Director of the Morehouse School of Religion for several years, and Professor at the Interdenominational Theological Center from 1953-1962. Jewell Evelyn Middlebrooks was born in Griffin, Georgia 1907. For forty two years she was a faithful pastors wife, the first lady of the Tremont Temple Church, Savannahs First Bryant Church and Atlantas Zion Hill Baptist Church.
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