16,037 research outputs found
À Londres : la majorité de M. Major
No full textJohnson Christopher. À Londres : la majorité de M. Major. In: Revue d'économie financière, n°20, 1992. Le financement des entreprises. pp. 251-253
Reassessing the Johnson Presidency
No full textThe purpose of this thesis is to show that a hegemonic discourse has developed through the literature based on Lyndon Baines Johnson. This thesis also serves to challenge the discourse that has developed through the use of Archival research in order to gain a more informed understanding of the legacy of LBJ. To test this hypothesis, the existing literature has been examined and organised into primary and secondary(those who knew Johnson and those who did not)this allows us to establish if a discourse has developed, how it has developed and how it affects our perception of the Johnson Presidency. Secondly, Archival sources and data are used to challenge the hegemonic discourse that has developed. It is apparent that by conducting this research, the hegemonic discourse is mainly developed and perpetuated through secondary literature. When looking at the archival sources, it is apparent that this discourse is underdeveloped and omits key features of the Johnson Presidency that could drastically alter our perception of his time in office and ultimately his legacy as a President of the United States
Tribological properties of gradient-density hydrogel surfaces
No full textSubmission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2023-12-01The student, Christopher Johnson, accepted the attached license on 2021-10-07 at 13:24.The student, Christopher Johnson, submitted this Dissertation for approval on 2021-10-07 at 14:23.This Dissertation was approved for publication on 2021-10-08 at 10:06.DSpace SAF Submission Ingestion Package generated from Vireo submission #17153 on 2022-04-06 at 17:16:39Made available in DSpace on 2022-04-29T21:42:55Z (GMT). No. of bitstreams: 3
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Previous issue date: 2021-10-08Embargo set by: Seth Robbins for item 123318
Lift date: 2024-04-29T21:43:01Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 123318
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Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 123318
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Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 123318
Lift date: 2024-04-29T21:47:53Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemAuthor requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I OnlyHydrogels are soft hydrated polymer networks that are widely used in research and industry due to their similarity to biological tissues. As one of the leading materials used for tissue surrogates or biological interfaces, hydrogels exhibit useful properties such as biocompatibility, high elasticity, and low friction. While there is a continuously expanding body of research investigating hydrogels, some tribological studies are seemingly contradictory, even showing vastly different frictional behavior for the same hydrogel composition. One explanation for this comes from the ‘mold effect’, first mentioned in 2001, whereby the mold material alters the polymerization process of the hydrogel, imparting different properties to the surface in contact with it. The ‘mold effect’ was not considered or studied in detail until recent work published in 2019, where researchers found that the effect drastically reduced the stiffness of hydrogels polymerized against polymer molds compared to glass-molded hydrogels. Several studies in subsequent years finally determined that the ‘mold effect’ is due to absorbed oxygen within the mold surface interfering with the polymerization, inducing a dilute gradient-density surface layer exhibiting altered properties. However, the precise structure of the gradient surface layer, its contact response, and its effect on lubrication have not yet been characterized. Such knowledge would prove useful for designs of composite hydrogels utilizing the gradient surface layer for its special frictional properties. In order to fully characterize the hydrogel gradient surface layer, we first developed a method to view contact area of a probe on a hydrogel substrate in real time using particle exclusion microscopy. We then utilized this technique during indentation, creep, and sliding experiments on a standard hydrogel composition. Indentation experiments confirmed the dilute gradient nature of the surface layer, showing that it follows an evolving contact response with depth. This contact response could be approximated through piecewise modeling starting with a polymer brush contact model, then a Winkler foundation model, and finally the classic Hertzian contact model. Calculation of the contact area using these contact models verified that the indentation data was aligned with the piecewise model. This provided information regarding the polymer structure of the gradient layer: that it is composed of brush-like polymer segments swollen in water, where the polymer density and degree of crosslinking increase further into the depth. Creep experiments revealed that the gradient layer allows poroelastic relaxation even at pressures far below the reported osmotic pressure of the bulk crosslinked structure, which further supports the less-dense, ‘brushy’ nature of the gradient layer. Sliding experiments showed enhanced lubrication and strong speed dependence on the friction, but no dependence on the contact area. The lack of transient friction behavior also demonstrated the quick rehydration of the gradient layer during the phases out of contact. Indentation, creep, and sliding experiments were also conducted on four other hydrogels of varying monomer and crosslinker percent in order to determine the effect of composition on the gradient layer. All compositions exhibited a poroelastic gradient layer that followed the evolving contact model previously formulated. Stiffer compositions had thinner gradient layers whose response under shear was less consistent with changes to load and speed. Finally, we found that changing the monomer-to-crosslinker ratio was more effective at changing the consistency of the shear response and the gradient layer thickness. These findings prove that the dilute structure of the gradient layer provides enhanced lubrication under sliding conditions by improving hydrodynamic lubrication and reducing polymer-probe interactions. This knowledge can potentially be used to create hydrogels with a stiff load-bearing bulk that retains optimal lubrication across a wide range of operating conditions
An interdisciplinary study of information systems: Christopher Alexander and IS failure.
No full textThis paper describes work carried out at the University of York; its contents do not represent the views or opinions of BT. It provides an example of how insights into the field of IS can be gained by looking at it from the perspective of other academic disciplines. Based on the idea that physical and virtual office spaces exist to serve parallel organisational requirements, it is argued that designers of information systems (IS) should be able to learn from the experience of architects in order to improve their methods and redefine their objectives. Firstly, the work of Christopher Alexander is reviewed to show how his work on architectural patterns has been of value to the designers object-oriented systems. Secondly, similarities in the literature between notions of failure in architecture and IS design are identified. These are then examined through interviews with practitioners to establish the relevance of the approach. Finally, the area that Alexander described as ‘the quality without a name’ is highlighted as a topic for further research.Information Systems, Patterns, Virtual Office, Christopher Alexander
Book Review: Grimwood, M and McHanwell, S. (2024) Evidencing Teaching Achievements in Higher Education. Critical Publishing.
No full textBook Review: Grimwood, M and McHanwell, S. (2024) Evidencing Teaching Achievements in Higher Education. Critical Publishing.
Christopher Little
Manchester Metropolitan University
Corresponding author: [email protected]
Serum lipids of adults 20-74 years :United States, 1976-80
No full textThis report presents descriptive and analytic data for serum total cholesterol, cholesterol lipoproteins, and triglycerides for adults 20-74 years of age by age, sex, and selected subgroups of the population at risk of developing coronary heart disease, This information is frorm the second National Health and Nutrition Examination Survey, which was conducted during the years 1976-80.Margaret Carroll, M. S. P.H., Christopher Sempos, Ph. D., Ronette Briefel, Dr. P.H., R.D., Shirley Gray, M. B.A., and Clifford Johnson, M.S. P.H., Division of Health Examination Statistics."From the second National Health and Nutrition Examination Survey.""March 1993."Also available via the World Wide Web.Includes bibliographical references (p. 10-11).19931116
Paractenicera Johnson
No full textParactenicera Johnson, New Genus Type species. Corymbites fulvipes Bland, 1863; here designated Description. Body elongate, narrow, subparallel at mid-length, depressed. Integument shining, moderately to densely punctured, umbilicate on head and pronotum; pubescence short, cinereous. Head with frons weakly concave; supra-antennal ridge directed antero-medially. Antenna strongly serrate; short, reaching only to apex of hind angle; segment 3 serrate, coarsely punctate. Pronotum with length 1.35 X width; disc slightly convex, with shallow median canaliculation; hind angle truncate at apex; dorsal carina moderately strong; basal incisures distinct. Prosternum with anterior lobe extended, 0.35 X width, slightly deflexed; intercoxal process planar. Hypomeron with mesal margin simple or with narrow, flattened, punctate bead; posterior margin deeply emarginated. Scutellum triangular. Mesepimeron narrowly adjacent to coxal cavity. Metaventrite with anterior intercoxal process quadrangular. Elytral striae striatopunctate, subsulcate; intervals flat to weakly convex, punctures adjacent to stria; apex briefly mucronate at suture. Aedeagus with median lobe deflexed apically; lateral lobe hooked apically, apex membranous and setose. Gonocoxites lightly sclerotized; ovipositor rods longer than 0.5 X length of ventrites 1–5; bursa copulatrix expanded, without saccate colleterial glands, with opaque collar at constriction; spermathecal receptacle saccate, arcuate, wall corrugated and lightly sclerotized; spermatheca short, saccate; spermathecal reservoir short, tubular; accessory gland duct thick basally, gradually narrowing from spermathecal receptacle. Name derivation. The genus name is based on Ctenicera, with the prefix “para-” from the Greek prefix "παρα", indicating close position, to indicate the close affinity with the former genus. Species included. Paractenicera exilis (Notman, 1920), new combination; Paractenicera fulvipes (Bland, 1863), new combination. Paractenicera fulvipes (Bland, 1863) NEW BRUNSWICK: Kings Co.: Grand Bay, 24.vi. 1990, D.F. McAlpine, NBM. Newly recorded from New Brunswick. In Nova Scotia collected almost exclusively in deciduous forests of various ages; very occasionally in coniferous forests. Pseudanostirus hamatus (Say, 1834), New Combination Elater hamatus Say, 1834 Corymbites hamatus; LeConte, 1853 Ludius hamatus; Van Dyke, 1932 Ctenicera hamata; Dietrich, 1945 This species has been previously recorded from both New Brunswick and Nova Scotia (Table 1). Most species closely related to P. h a m a t u s were already transferred to Pseudanostirus by Gurjeva (1989) and Tarnawski (1996). Adults of this species fit the description of Pseudanostirus given by Gurjeva (1989). Pseudanostirus hieroglyphicus (Say, 1834) PRINCE EDWARD ISLAND: Kings Co.: Woodville Mills, 23.vii. 2001, C.G. Majka, mixed forest, CGMC; Queens Co.: St Patricks, 13.vii. 2002, C.G. Majka, coniferous forest on Picea rubens, CGMC; St Patricks, 25.vi. 2003, C.G. Majka, mixed forest, CGMC. Newly recorded from Prince Edward Island. In Nova Scotia collected from both deciduous and coniferous (red spruce (Picea rubens) and balsam fir (Abies balsamaea) forest stands of various ages. In parklands on undergrowth (Brooks 1960). Selatosomus splendens (Ziegler, 1844) This species was reported from Nova Scotia by Bousquet (1991), however, there are no vouchers specimens in any collection examined, nor are there published records from the province. Accordingly, the species is removed from the faunal list of Nova Scotia. It does occur in neighbouring New Brunswick and should be looked for in Nova Scotia since it could plausibly occur there.Published as part of Majka, Christopher G. & Johnson, Paul J., 2008, The Elateridae (Coleoptera) of the Maritime Provinces of Canada: faunal composition, new records, and taxonomic changes, pp. 1-33 in Zootaxa 1811 on pages 24-25, DOI: 10.5281/zenodo.18278
Dee v. Johnson : Brief of Appellee
No full textIN THE UTAH COURT OF APPEALS CHRISTOPHER DEE, Plaintiff and Appellant, v. RICKY L. JOHNSON. CLINTON KIDMAN, ALLRLD AUK m n \u27 v LLC, a Utah limited liability corporation, Defendants and Appellee. Utah Court of Appeals No. 201 104M Trial Court No. 100100231 BRIEF APPEAL •iMKIC i LOUR I ,BLE JUDGE BEN i IADI ELD, PRESIDING Robert G.Gilchrist (37 IS) Jordan P. Kendell (10950) EISENBERG, GILCHRIS1 &C 215 South State Street, Suite 900 Sail Lake City, Utah 84111 (X«. ! , 3 66-9100 Attorneys for Appellant/Plaintiff Christopher Dee Terry M. Plant (2610) Joshua T. Gardner (12098) PLANT, CHRISTENSEN & KANELL 136 1 ;NI South k-p.ipie. Suite 1700 Salt Lake City, Utah 841 11 (801)363-7611 Attorneys for Appellee/Defendant Ricky Johnson ORAL ARGUMENT REQUESTE
A Mixed-Method Approach for Quantifying Illegal Fishing and Its Impact on an Endangered Fish Species
No full textIllegal harvest is recognized as a widespread problem in natural resource management. The use of multiple methods for quantifying illegal harvest has been widely recommended yet infrequently applied. We used a mixed-method approach to evaluate the extent, charac- ter, and motivations of illegal gillnet fishing in Lake Hovsgol National Park, Mongolia and its impact on the lake’s fish populations, especially that of the endangered endemic Hovsgol grayling (Thymallus nigrescens). Surveys for derelict fishing gear indicate that gillnet fishing is widespread and increasing and that fishers generally use 3–4 cm mesh gillnet. Interviews with resident herders and park rangers suggest that many residents fish for subsistence during the spring grayling spawning migration and that some residents fish commercially year-round. Interviewed herders and rangers generally agree that fish population sizes are decreasing but are divided on the causes and solutions. Biological monitoring indicates that the gillnet mesh sizes used by fishers efficiently target Hovsgol grayling. Of the five species sampled in the monitoring program, only burbot (Lota lota) showed a significant decrease in population abundance from 2009–2013. However, grayling, burbot, and roach (Rutilus ruti- lus) all showed significant declines in average body size, suggesting a negative fishing impact. Data-poor stock assessment methods suggest that the fishing effort equivalent to each resident family fishing 50-m of gillnet 11–15 nights per year would be sufficient to over- exploit the grayling population. Results from the derelict fishing gear survey and interviews suggest that this level of effort is not implausible. Overall, we demonstrate the ability for a mixed-method approach to effectively describe an illegal fishery and suggest that these methods be used to assess illegal fishing and its impacts in other protected areas.Peer reviewe
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