Dissertations / Theses: 'DB plan'

1

Cheng, Hong. "Mining high-utility plans from plan databases /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?COMP%202003%20CHENG.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2003.
Includes bibliographical references (leaves 67-69). Also available in electronic version. Access restricted to campus users.

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Zhang, Tao. "Regulation of EGY1 gene expression by environmental factors and developmental cues /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?AMCE%202005%20ZHANG.

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3

Balasubramanian, Rajagopal. "Harlequin (hlq) : an arabidopsis mutant that ectopically expresses Dc3-GUS and shows defects in cell wall morphogenesis /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?BIOL%202003%20BALASU.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2003.
Includes bibliographical references (leaves 197-236). Also available in electronic version. Access restricted to campus users.

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4

Chu, Jian. "New control-plane architecture for QoS-guaranteed Internet /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?ECED%202007%20CHU.

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Demeyere, Michaël. "Noncontact dimensional metrology by triangulation under laser plane lighting : development of new ambulatory instruments / Métrologie dimensionnelle sans contact par triangulation sous éclairage par plans laser : développement de nouveaux instruments ambulatoires." Université catholique de Louvain, 2006. http://edoc.bib.ucl.ac.be:81/ETD-db/collection/available/BelnUcetd-03092006-140258/.

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Dimensional metrology is of prime importance in the industrial and scientific domains, particularly in the field of quality control of manufactured products. In robotics too: without dimensional sensors, robots would be nothing else more than automatons, going through the same repetitive tasks again and again in a carefully controlled environment. This thesis deals with a noncontact measurement technique involving active vision, called triangulation under laser plane lighting. This optomechatronic method consists in projecting a laser sheet on an object or a surface under test, and analyzing the intersecting curve on an image taken by a camera. It allows making a wide variety of dimensional, noncontact and nondestructive, measurements (length, area, volume, diameter, curvature, reverse engineering,...). The original approach of the work is that the focus is brought on the determination of specific, restricted dimensional information on objects of diverse, but a priori known, shapes with the objective of achieving metrological performances in agreement with the industrial requirements. Furthermore, ambulatory instrumentsi.e. devices that are at least portable, or even handheldare exclusively aimed, using low-cost components. Another objective is to obtain systems for which an industrial transposition to innovative instrumental products is feasible. The text is divided in two distinct parts, both strongly correlated. The first one deals with all the theoretical aspects of the method: camera model, passage from 2-D image to 3-D scene, image processing, calibration, accuracy analysis... The performances of the developed models are also studied, in terms of robustness and repeatability. The second part describes four innovative applications of our own: the diameter measurement of cylindrical and of spherical objects, dimensional measurements in the building sector and the determination of the road surface microtexture. The achieved accuracies are globally of about 1%.

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Chan, Cheung. "Out of plane screening and dipolar interaction in heterostructures /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202009%20CHAN.

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7

Subramanian, Senthil. "Short blue root (sbr), an arabidopsis mutant that ectopically over-expresses and ABA- and auxin-inducible transgene Dc3-GUS and has defects in the cell wall /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?BIOL%202002%20SUBRAM.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2002.
Includes bibliographical references (leaves 238-266). Also available in electronic version. Access restricted to campus users.

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8

Lee, Marlene. "Games people play examining factors that contribute to gamblers' gaming preferences /." online access from Digital Dissertation Consortium, 2005. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?3181810.

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McFerren, Marcus Anthony. "Traditional plant-based fishing in the Americas an ethnobotanical, phytochemical, and pharmacological investigation /." online access from Digital Dissertation Consortium access full-text, 2000. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?9978142.

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10

Zhang, Lingqing. "Alkaline phosphatase activities of aureoumbra lagunensis in phosphate-limited and hypersaline conditions /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?BIOL%202007%20ZHANGL.

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11

Sun, Xin. "Characterization of an auxin- and abscisic acid-inducible reporter gene : Dc3-GUS in reported auxin mutants, and mutant screening based on auxin responsive Dc3-GUS expression /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?BIOL%202003%20SUN.

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12

Veerappan, Vijaykumar. "Molecular and genetic analysis of the function of cis-cinnamic acid in arabidopsis thaliana /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?BIOL%202004%20VEERAP.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004.
Includes bibliographical references (leaves 78-85). Also available in electronic version. Access restricted to campus users.

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13

Solomon, Juan Kevin Quamina. "A NOVEL APPROACH TO GRASS-LEGUME MANAGEMENT." MSSTATE, 2010. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03082010-150159/.

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A 2-yr grazing study quantified pasture and animal responses of four forage systems (FS) grazed at two stocking rates (SR; 3 or 6 animals ha^-1). Using Marshall‟ annual ryegrass (Lolium multiflorum Lam.) and Durana‟ white clover (Trifolium repens L.), FS treatments included spatially separated grass and legumes within the same paddock (SS), monoculture grass (MG), monoculture legume (ML), and a binary grass and legume mixture (MIX). Annual herbage mass (HM) was similar among FS at high SR (1900 kg ha^-1), but at low SR, grass plots had greater HM (2900 vs. 2000 kg ha^-1) than plots of legume monocultures. Animals on SS (1.12 kg) had greater average daily gain (ADG) than ML (0.97 kg), but neither was different from MG (1.08 kg) or MIX (1.00 kg). Low SR animals had greater ADG than high SR (1.09 vs. 0.99 kg). These results indicate that SS grazing system can improve pasture productivity.

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14

Cerven, Vasile. "EFFECT OF NITROGEN, LOCATION, AND HARVESTING STAGE ON PEPPERMINT (Mentha X piperita L.) PRODUCTIVITY, OIL CONTENT, AND COMPOSITION." MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03232009-123049/.

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Peppermint dry weight biomass was higher in Verona (8119 kg/ha) than in Stoneville (6115 kg/ha). Overall both, oil content and yield were higher in bud formation stage than flowering stage. The levels of major essential oil constitutes were (-)-menthol 26 30 %, (-)-menthone 14 21 %, (+)-menthofuran 5 11 %, and eucalyptol 3 4 % of total essential oil content at flowering stage. Menthone content and its yield were higher at first cut; however, (+)-menthofuran content and its yield were higher at the second cut at bud formation. Although N fertilizers at rate 80 kg/ha did not affect essential oil content and yield at cut 1, N rate at 80 + 80 kg/ha increased oil yield at cut 2.

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Fleming, Daniel. "THE SPOTTED CUCUMBER BEETLE (DIABROTICA UNDECIMPUNCTATA HOWARDI): INTERACTIONS WITH CUCURBITS AND ITS STATUS AS A SWEET POTATO PEST IN MISSISSIPPI." MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03272009-112856/.

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The spotted cucumber beetle (Diabrotica undecimpunctata howardi Barber) is regarded as a pest of sweetpotatoes in Mississippi; however, its feeding on sweetpotatoes has not previously been documented. They are attracted to cucurbit crops that could be utilized as a trap crop or sentinel plant for management of cucumber beetles in sweetpotatoes. Studies were conducted between 2006 and 2008 to determine if cucurbit plants have the potential to serve as a trap crop or as sentinel plants for the spotted cucumber beetle in sweetpotato fields, and to determine the status of the spotted cucumber beetle as a sweetpotato pest in Mississippi. Cucurbit plants showed some potential to serve as a trap crop or sentinel plant for the spotted cucumber beetle, however, sweetpotato damage assumed to be caused by cucumber beetle larvae did not correlate with the number of adults captured. Spotted cucumber beetle larvae can feed and survive on sweetpotato roots.

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An, Chuanfu. "SNP CHARACTERIZAITON AND GENETIC AND MOLECULAR ANALYSIS OF MUTANTS AFFECTING FIBER DEVELOPMENT IN COTTON." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03302008-191842/.

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Cotton (Gossypium spp.) is the worlds leading textile fiber crop, and an important source of oil and protein. Insufficient candidate gene derived-markers suitable for genetic mapping and limited information on genes that control economically important traits are the major impediments to the genetic improvement of Upland cotton (G. hirsutum L.). The objectives of this study were to develop a SNP marker discovery strategy in tetraploid cotton species, SNP characterization and marker development from fiber initiation and elongation related genes, chromosomal assignment of these genes by SNP marker-based deletion analysis or linkage mapping, and genetic and molecular analysis of mutants affecting cotton fiber development. Phylogenetic grouping and comparision to At- and Dt-genome putative ancestral diploid species of allotetraploid cotton facilitated differentiation between genome specific polymorphisms (GSPs) and marker-suitable locus-specific polymorphisms (LSPs). By employing this strategry, a total of 222 and 108 SNPs were identified and the average frequency of SNP was 2.35% and 1.30% in six EXPANSIN A genes and six MYB genes, respectively. Both gene families showed independent and incongruent evolution in the two subgenomes and a faster evolution rate in Dt-genome than that in At-genome. SNPs were concordantly mapped to different chromsomes, which confirmed their value as candidate gene marker and indicated the reliability of SNP discovery stragey. QTL mapping by two F₂ populations developed from fiber mutants detected major QTL which explain 62.8-87.1% of the phenotypic variation for lint percentage or lint index in the vicinity of BNL3482-138 on chromosome 26. Single marker regression analyses indicated STV79-108, which was located to the long arm of chromosome 12 (the known location of N₁ and perhaps n₂ loci), also had significant association (R² % value 15.4-30.6) with lint percentage, lint index, embryo protein percentage and micronaire. Additional QTL and significant markers associated with other seed and fiber traits were detected on different chromosomes. Inheritance analysis indicated that both genetic models N₁N₁n₂n₂ and n₂n₂li₃lisub>3 could lead to the fiberless phenotype. The observation of fuzzless-short lint phenotype indicated fiber initiation and elongation were controlled by different mechanisms. The penetrance of Li₂ gene expression was observed in this study.

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17

Young, Joseph Ronald. "IDENTIFICATION OF STROBILURIN AND BENZIMIDAZOLE RESISTANCE IN COLLETOTRICHUM CEREALE ISOLATES CAUSING ANTHRACNOSE ON CREEPING BENTGRASS PUTTING GREENS IN MISSISSIPPI AND ALABAMA." MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03302009-121204/.

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Anthracnose, incited by Colletotrichum cereale, is a destructive disease of physiologically stressed creeping bentgrass putting greens in Mississippi and Alabama. Anthracnose severity and frequency of occurrence have increased over the past 15 years, and fungicide resistance may have had a role in the increase. In vitro bioassays were performed to evaluate thiophanate methyl and azoxystrobin against C. cereale isolates exposed to the fungicides and baseline isolates that had not been exposed to either fungicide. All isolates collected from creeping bentgrass were uninhibited by both fungicides at discriminatory doses. Partial nucleotide sequences of the â-tubulin 2 (thiophanate methyl) or cytochrome b (azoxystrobin) gene was compared to confirm fungicide resistance. Thiophanate methyl resistance was conferred by either a point mutation from glutamic acid to alanine at position 198, or phenylalanine to tyrosine at position 200. Azoxystrobin resistance was conferred by an amino acid point mutation from glycine to alanine at position 143.

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18

McCaskill, Andrew Oliver. "FLAGELLAR SENSILLA OF FEMALES OF SELECTED SPECIES OF VESPIDAE (HYMENOPTERA)." MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04022009-112812/.

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Little information regarding the flagellar sensilla of the Vespidae, particularly Polistes, exists in the literature. A variety of social behaviors in vespids, such as alarm pheromones and pheromone response, involve intraspecific communication. Therefore, an understanding of sensory receptors in social wasps would benefit further behavioral and neurological studies of wasps. The flagellar sensilla of female paper wasps Polistes dorsalis, Polistes metricus, and the solitary wasp Monobia quadridens were examined by scanning and transmission electron microscopy. A number of olfactory receptors, contact chemoreceptors, and mechanoreceptors were named and described. Possible functions of these receptors were proposed based on morphological and ultrastructural data for each type of sensillum. Counts of several sensilla were made over the whole of five flagellae of each species and results were compared among species, flagellomeres, medial and lateral surfaces.

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19

Hill, JoVonn G. "ENVIRONMENTAL VARIABLES AFFECTING ANT (FORMICIDAE) COMMUNITY COMPOSITION IN MISSISSIPPI?S BLACK BELT AND FLATWOODS REGIONS." MSSTATE, 2006. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04192006-141353/.

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The relationship of ant community composition to various habitat characteristics is compared across four habitat types and 12 environmental variables in Mississippi. The four habitat types include pasture, prairie, and oak-hickory forests in the Black Belt and forests in the Flatwoods physiographic region. Ants were sampled using pitfall traps, litter sampling, baiting and hand collecting. A total of 20,916 ants representing 68 species were collected. NMS and ANCOVA both revealed three distinct ant communities (pasture, prairie, and ?forests?) based on species composition and mean ant abundance per habitat type between the four habitat types. Principal component analysis (PCA) partitioned the 12 environmental variation into four axes with eigenvalues >1. Axis 1 differentiated open grass-dominated habitats from woodlands. In contrast axis two mainly separated pastures from prairie remnants. Multiple regression models using the four significant PCA axes revealed that total species richness was significantly affected by variation in the first two PCA axes. Forested sites supported approximately nine more species of ants than prairies and 21 more than pastures. Comparisons of the abundance of ant functional groups were also made between the four habitat types with multiple regression models to investigate how the environmental variables affected certain groups of ants. Annotated notes are included for each ant species encountered during this study.

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Gibson, Bradley Kyle. "RELATIONSHIP BETWEEN CORN STALK STRENGTH AND SOUTHWESTERN CORN BORER PENETRATION." MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04212009-172322/.

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Studies were conducted to determine if corn stalk strength had an effect on southwestern corn borer (Diatraea grandiosella Dyar) survival during different growth stages. In 2006 southwestern corn borer larvae were placed on corn during the tassel stage near the ear and base of the plant. Survival was higher near the ear than near the base of the plant. In 2007, five varieties of corn were planted at three locations in Mississippi. Plants were infested with five 3rd instar larvae at the ear zone during tassel, dough and dent development stages. After five days stalk strength and borer survival were measured. Survival decreased as the corn progressed from tassel to dent stage. Survival varied among corn varieties. The relationship between stalk strength and borer survival was not consistent, indicating that there are likely factors more directly limiting borer survival than physical stalk strength.

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21

Perera, Dinum. "DEVELOPING RESISTANCE TO WHITEFLY IN POINSETTIA (Euphorbia pulcherrima) USING Agrobacterium-MEDIATED TRANSFORMATION." MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07072009-214527/.

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The broad objective of this research was to develop transgenic poinsettia that express tryptophan decarboxylase (TDC) capable of protecting poinsettia against whitefly. An effective and efficient in vitro micro propagation and proliferation technique of poinsettia Prestige Red was successfully developed in this study and this protocol can be used for potential development of transgenic poinsettia. Poinsettia Prestige Red was successfully infected by Agrobacterium rhizogenes producing hairy roots at the site of infection. Investigations of more effective PGR concentrations are necessary in order to develop transgenic poinsettia through hairy roots. Stem disks of poinsettia Eckespoint Pollys Pink developed into somatic embryos when they were transformed by A. tumefaciens harboring TDC. A. tumefaciens-mediated transformation of poinsettia through somatic embryogenesis is cultivar dependent. Additional research into more effective PGR combinations, antibiotic concentrations and antinecrosis chemicals is required in order to develop transgenic poinsettia harboring TDC through somatic embryogenesis using A. tumefaciens.

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Singh, Shardendu Kumar. "DEVELOPING SCREENING TOOLS FOR ABIOTIC STRESSES USING COWPEA [VIGNA UNGUICULATA (L.) WALP.] AS A MODEL CROP." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-09032008-105843/.

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Abiotic stresses cause extensive loss to agriculture production worldwide. Cowpea is an important legume crop grown widely in tropical and subtropical regions where high temperature, ultraviolet-B (UVB) radiation and drought are the common stress factors limiting production. Various vegetative, physiological, biochemical and reproductive plant attributes were assessed under a range of UVB radiation levels in Experiment I and in a combination with two doses of each carbon dioxide concentration [CO₂], temperature, and UVB radiation and their interactions in Experiment II by using six cowpea genotypes and sunlit plant growth chambers. The dynamics of photosynthesis and fluorescence processes were assessed in 15 cowpea genotypes under drought condition in Experiment III in pot-grown plants under sunlit conditions. A distinct response pattern was not observed in cowpea in response to UVB radiation form 0 to 15 kJ; however, plants grown under elevated UVB showed reduced photosynthesis resulting in shorter plants and produced smaller flowers and lower seed yield. Increased phenolic compounds appeared to be a defense response to UVB radiation. The growth enhancements observed by doubling of [CO₂] were not observed when plants were grown in combination with elevated UVB or temperature which also showed the most detrimental effects on plant growth and seed yield. Results form Experiment I and II revealed that cowpea reproductive traits were highly sensitive to abiotic stresses compared to the vegetative growth and development. A total stress response index (TSRI) technique, derived from all vegetative and reproductive parameters, was used to screen genotypes for their stress tolerance to UVB or combination of stresses. An increase in water use efficiency while maintaining higher rate of photosynthesis was an important drought tolerance mechanism in tolerant cowpea genotypes. Using principal component analysis technique, four groups of the genotypes were identified for their drought tolerance. Evaluating same genotypes across stress conditions revealed that no single genotype has the absolute tolerance characters to all stress conditions. The identified diversity for abiotic stress tolerance among cowpea genotypes and associated traits can be used to develop tolerant genotypes suitable for an agro-ecological niche though traditional breeding or genetic engineering methods.

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Pichardo, Sergio T. "OCCURRENCE OF DISEASES AND INSECT PESTS IN SELECT SOYBEAN (Glycine max (L.) Merr.) AND SORGHUM(Sorghum bicolor (L.) Moench) ROTATIONS IN MISSISSIPPI." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-09242007-142233/.

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Field and greenhouse studies were conducted during 2004 through 2006 at the Rodney R. Foil Plant Science Research Center, Starkville, MS. Six sorghum and soybean rotation treatments were tested to determine their effect on plant pathogen, insect, and nematode diversity and density levels. Treatments included 1) continuous sorghum, 2) continuous soybean, 3) sorghum-soybean-sorghum rotation, 4) soybean-sorghum-soybean rotation, 5) sorghum-soybean-soybean rotation, and 6) soybean-sorghum-sorghum rotation. Several nematode and insect species were identified during the study, but were always below economic thresholds. Six insect species were identified on soybean during each growing season and used as the indicator species for this study. The most prevalent were threecornered alfalfa hopper (Spissistilus festinus (Say) and bean leaf beetle (Cerotoma trifurcata (Forester). Sorghum webworm (Nola sorghiella Riley) and corn earworm (Helicoverpa zea (Boddie) were the most common insects on sorghum panicles. Rotations did not affect the diversity or density levels of the indicator soybean or sorghum insects during the three year study. Plant disease levels during the investigation showed variable results. Three foliar fungal pathogens including Diaporthe phaseolorum (Cooke & Ellis) Sacc. var. meridionalis, Septoria glycines Hemmi, and Cercospora sojina Hara on soybean, and Gloeocercospora sorghi D. Brain & Edgerton ex Deighton on sorghum were observed. The only virus disease on soybean was bean pod mottle, but levels were not affected by the rotations during the study. Zonate spot caused by G. sorghi was the most prevalent foliar sorghum disease, but was not affected by the rotations. Six frequently isolated fungal pathogens from either soybean or sorghum roots included Macrophomina phaseolina (Tassi) G. Goidanich, Rhizoctonia solani Kühn, D. phaseolorum, Aspergillus spp., Trichoderma spp and Fusarium spp. Aflatoxin contamination of sorghum seed was low (<20 ppb) the first two years of the study, but was high (790 ppb) in 2006. Significantly greater soybean and sorghum yields were obtained from rotated systems compared to monoculture systems in 2005. In a greenhouse test, M. phaseolina infection of soybean led to significantly greater root disease ratings, lower plant height and dry weight than the untreated control. Sorghum plant growth was not affected by M. phaseolina and R. solani.

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Ma, Shen. "FLOWER FORCING IN BANANA SHRUB (Michelia skinneriana Dunn.) AND BOUGAINVILLEA (Bougainvillea wild.)." MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-10302009-164649/.

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Flower forcing to meet holiday market can increase the value of potted flowering plants. This study was to investigate the effects of chilling and post-chilling photoperiod treatments on flowering of banana shrub and the effects of water stress, daminozide, chlormequat, and ethephon on flowering of bougainvillea. Experiments were conducted at R.R. Foil Plant Science Research Center and MSU Dorman Greenhouse at Mississippi State University (MSU), Mississippi State, MS. Results from banana shrub experiment indicated that 8-week chilling at 8 ºC was necessary for banana shrub to break bud dormancy and a tank mix of daminozide and chlormequat was able to increase the number of flower buds on banana shrub. Results from bougainvillea experiment indicated that water stress, daminozide, and chlormequat enhanced flowering. In conclusion, this study provided fundamental information to future research on flower forcing of banana shrub and bougainvillea.

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Holmberg, Kyle B. "SELECTION FOR REDUCED SEED DORMANCY IN SEVEN NATIVE GRASS SPECIES." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11052007-220827/.

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Lowland switchgrass (Panicum virgatum), big bluestem (Andropogon gerardii), indiangrass (Sorghastrum nutans), upland switchgrass (Panicum virgatum), little bluestem (Schizachyrium scoparium), beaked panicum (Panicum capillare), and purpletop (Tridens flavus) all show strong signs of seed dormancy which contributes to extremely poor field establishment. The objective of this work was to reduce seed dormancy by selecting individuals that exhibited reduced pre-stratification dormancy in laboratory tests. The classical breeding method of phenotypic recurrent selection was used to enhance germination. Of the three tall-stature species, lowland switchgrass made the greatest improvement in pre-stratification germination, followed by indiangrass and big bluestem. The four short stature species have shown various results after one cycle of selection at Starkville. A field emergence trial was also conducted to evaluate three cycles of breeding seed with five commercially available cultivars in which Cycle 3 seed produced more plants per hectare than any of the other cultivars or germplasm.

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Abraham, Cheri Muthirakalayil. "ECOLOGY OF LARRA BICOLOR (HYMENOPTERA: SPHECIDAE) IN THE NORTHERN GULF." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11052008-151008/.

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Mole Crickets (Scapteriscus spp.) are the most destructive pests in southern turf and pasture grasses. In response to extensive losses from mole crickets, Florida formed a task force to identify natural enemies in the native range of these pests. Two parasitic insects, Larra bicolor and Ormia depleta, and Steinernema scapterisci, an entomopathogenic nematode, were imported and released. Of the two insects, only Larra bicolor has spread to other states infested with mole crickets in the southeast. The present study documents the seasonal biology of Larra bicolor in the northern Gulf region, ornamental plants that can be used as nectar sources, and the impact of these nectar sources on longevity of the wasp and parasitism of mole crickets. Results of field and laboratory experiments showed that the ornamental Pentas lanceolata attracted wasps in the field and provided comparable or better longevity than Spermacoce verticillata which was the only known nectar source.

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Matcha, Satyasai Kumar. "EFFECTS OF NITROGEN DEFICIENCY ON PLANT GROWTH, LEAF PHOTOSYNTHESIS, AND HYPERSPECTRAL REFLECTANCE PROPERTIES IN CASTOR (RICINUS COMMUNIS L.)." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11072007-171640/.

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Influence of nitrogen (N) deficiency on castor cv. Hale growth, physiology, and leaf reflectance properties were investigated. Treatments imposed were complete Hoaglands nutrient solution (control, 100N), reduced N to 20% of the control (20N) and withheld N from the solution (0N) from 34 to 66 days after sowing (DAS) in 12-L pots grown out doors. N deficiency significantly reduced leaf area, chlorophyll and photosynthesis resulting lower total biomass. Leaf and stem growth rates were more sensitive to leaf N concentration than photosynthesis and leaf addition rates. N deficiency stress increased leaf reflectance at R555 and R715 nm and caused a red-edge shift to shorter wavelengths. Reflectance ratios of R455/R605 and R505/R605 nm was highly correlated with leaf N on weight (r2 = 0.93) and area-based (r2 = 0.90) estimations, respectively. Similarly, reflectance ratio R635/R505 was highly correlated with chlorophylls (r2 = 0.94). The N-specific wavebands and functional relationships between leaf N and growth and developmental processes would be useful for rapid and non-destructive estimation of leaf N and growth rates of castor.

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LIU, ZHIJUN. "Effective modeling of agricultural practices within large-scale hydrologic and water quality simulations." MSSTATE, 2006. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11082006-162139/.

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The previously developed watershed hydrological and water quality model for St. Louis Bay watershed by Kieffer (2002) was refined and calibrated. The aspects of model development refinement included development of fertilization-related nutrient input parameters, evaluation of nutrient input methods, development of plant uptake-related nutrient input parameters, non-cropland simulation using PQUAL module, and recalibration of hydrology in Jourdan River. The related information of typical cropland management practice based on consultation from Mississippi State University Extention Service personnel was integrated into the watershed model. In addition, the Mississippi Department of Environmental Quality (MDEQ) observed water quality data were analyzed to evaluate the appropriateness of current watershed delineation and assess the health of the stream based on the MDEQ proposed numerical water quality target. The refined watershed model was calibrated in Wolf Rover and Jourdan River using both USGS and MDEQ observed water quality data. The concentrations of water quality constituents calculated from the developed watershed model will be provided as boundary conditions for the developed Bay hydrodynamic and water quality model for Total Maximum Daily Load studies.

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Smith, Beverly A. "A FAUNISTIC SURVEY OF NATIVE BEES IN THE BLACK BELT PRAIRIE OF MISSISSIPPI." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-12172007-162427/.

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This research presents the results of a bee survey (Hymenoptera: Apoidea) in remnants of the Mississippi Black Belt Prairie, a unique physiographical region that is a threatened community covering 14,141 square kilometers in both Mississippi and Alabama. Sampling was performed with sweep nets and Malaise traps. A total of 151 visits were made to several prairie remnant areas during the years 1999 2001 with 92 Malaise trap samples. Historical bee collection data from these prairies were incorporated into this survey. A total of 6,140 specimens resulting in 107 species, 51 new state records and eight disjunct species were collected within five bee families: Colletidae, Andrenidae, Halictidae, Megachilidae and Apidae. The most abundant species belonged to the Halictidae. The most common floral families visited were Asteraceae and Fabaceae. The addition of the species in this survey brings the state list of bees to at least 204.

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Luo, Chia-li. "Coastal culture and religion in early China a study through comparison with the central plain region /." online access from Digital Dissertation Consortium access full-text, 1999. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?9950782.

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Jim, Kwok Lung. "Numerical study of in-plane optical anisotropy for GaAs/AlAs superlattice in a uniform electric field /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202002%20JIM.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002.
Includes bibliographical references (leaves 35-37). Also available in electronic version. Access restricted to campus users.

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Kitchens, Shane C. "AN INTEGRATED SUBTERRANEAN TERMITE MANAGEMENT SYSTEM COUPLING SOIL AMENDMENTS WITH INSECT REPELLENT PLANT TISSUES." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03262008-170913/.

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Currently, soil termiticides are the primary termite defense mechanism used under and around living spaces in the continental United States. While this form of treatment has been effective for many years, the creation of a new, more environmentally friendly termite management system could reduce the amount of termiticides introduced annually into the environment around structures. A natural barrier containing soil amendments and mulches amended with insect-repellent plant tissues discourages termite foraging and directs the termites away from the structure. The proposed integrated management system developed during this project, divides a structure into three zones. Each zone has particular responsibilities to the overall biological durability of the structure. This study concentrates on the inner-detritus zone, which extends 24 (0.61m) from the outer wall of the structure, an area that can harbor potential hazards such as moisture traps, conducive termite food, water and protection sources, and other factors that could put undue biological pressures on the structure. Altering this zone, more specifically the pH of the soil and the mixture of products used as mulch, creates an environment unsuitable for termite foraging. This integration of several termite repelling strategies should obviate or significantly reduce the need for termiticidal soil barriers under and around houses.

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Johnson, Kerry. "Photoperiod induction, Gibberellic acid, mulch and row cover effects on fresh cut flower production of three Rudbeckia hirta L. cultivars." Diss., Mississippi State : Mississippi State University, 2006. http://sun.library.msstate.edu/ETD-db/ETD-browse/browse.

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Tang, Wei. "Compounds interacting with the PDZ2 domain of PSD-95 : identification in and isolation from a traditional Chinese medicinal plant /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?BIOL%202002%20TANG.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002.
Includes bibliographical references (leaves 72-82). Also available in electronic version. Access restricted to campus users.

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Nottelmann, Henrik Fuhr Norbert. "A logic-based approach for computing service executions plans in peer-to-peer networks." Gerhard-Mercator-Universitaet Duisburg, 2004. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-06222004-122500/.

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Today, peer-to-peer services can comprise a large and growing number of services, e.g. search services or services dealing with heterogeneous schemas in the context of Digital Libraries. For a given task, the system has to determine suitable services and their processing order (execution plan). As peers can join or leave the network spontaneously, static execution plans are not sufficient. This paper proposes a logic-based approach for dynamically computing execution plans: Services are described in the DAML-S language. These descriptions are mapped onto Datalog. Finally, logical rules are applied on the service description facts for determining matching services and finding an optimum execution plan.

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Lau, Yip Hang. "Maximization of treatment capacity of a full-scale biological nitrogen removal plant through model simulation and full-scale stress test /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?EVNG%202005%20LAU.

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Clark, Sabrina Diane. "Plant and Herpetofaunal Responses to Wetland Restoration on Pinckney Island National Wildlife Refuge, Beaufort County, South Carolina." MSSTATE, 2007. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03082007-090346/.

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Habitat destruction and modification are major causes cited for the decline of amphibians worldwide (Wake and Morowitz 1991). Depressional wetlands on Pinckney Island NWR in Beaufort County, South Carolina were ditched and drained during the 1950?s for agricultural development. Wetlands were restored by filling ditches with existing spoil. I surveyed herpetofaunal and vegetation communities to determine responses to wetland restoration on Pinckney Island from 2004-2005. I selected ten wetlands each in pine and maritime habitats, sampling prior to and after restoration. I recorded 14 reptile and 9 amphibian species using time-constrained searches and funnel trap arrays. I documented (first record on the Island) Fowler?s toad (Bufo woodhousei) and many-lined salamander (Stereochilus marginatus). There were differences between amphibian species richness recorded using time constrained surveys and funnel trap arrays, amphibian species abundance between pine and maritime forest, and between number of Eastern spadefoot toads (Scaphiopus holbrooki) before and after restoration.

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Scurry, James D. "Integrating geographic information systems (GIS) and modeling validating prehistoric site-settlement models for the South Carolina coastal plain using a GIS /." online access from Digital Dissertation Consortium access full-text, 2003. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?3084810.

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Cappelli, Tara Marie. "Two- and Three-Plane Job Risk Classification Using Motion Capture: An Examination of the Marras et al. Model, 1993." MSSTATE, 2005. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11112005-144302/.

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Lower Back Disorders account for 16-19% of work related claims and 33-41% of dollars paid in workers? compensation (as cited in Marras, 1999), with impacts to society approaching $100 billion dollars annually (as cited in Marras et al., 1999). Dr. William Marras engineered a device to track trunk kinematics in order to develop a Job Risk Classification Model for predicting high-risk group probability of lower back injury. The device has been validated, but other technologies such as 3-D motion capture can potentially gather the same data. This study examined the use of motion capture to apply two- and three-plane lifting tasks to the Marras model and compare results with commonly used assessment techniques. Regardless of the fact that the Marras model results were drastically different from NIOSH and RULA, motion capture was able to gather all necessary data for running the models and has a promising future in ergonomic assessments.

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Lee, Sangmi. "SYSTEMATICS OF HOLARCTIC TELEIODINI (LEPIDOPTERA: GELECHIIDAE)." MSSTATE, 2007. http://sun.library.msstate.edu/ETD-db/theses/available/etd-05232007-092441/.

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Phylogenetic relationships of 25 genera of Holarctic Teleiodini (Gelechiidae) are postulated based on morphology and molecular characters, including CO?I, CO?II, and 28S genes. The phylogenetic analysis of the morphology matrix yielded six equal most parsimonious trees (length 329 steps, CI = 0.38, RI = 0.53) and a strict consensus tree (length 342 steps, CI = 0.36, RI = 0.50) with two polytomies and two trichotomies. The phylogenetic analysis of the combined morphology matrix and the CO?I + CO?II + 28S matrix yielded two equally most parsimonious trees (length 1184 steps, CI = 0.50, RI = 0.41) and a strict consensus tree (length 1187 steps, CI = 0.50, RI = 0.40) that reinforced results from the morphological analysis and resolved the two polytomies and one of the two trichotomies present in the morphology consensus tree. Teleiodini are defined as a monophyletic clade with a Bremer support value greater than 5 in the consensus tree based on morphology and molecular data. Twenty?three clades of genera are defined with Bremer support values provided. An analyses of larval host plant preferences based on the consensus tree for combined data indicates derivation of feeding on woody hosts from genera feeding on herbaceous hosts and a single origin of feeding on coniferous hosts. An area cladogram indicates five independent origins of Nearctic genera from Holarctic ancestors and one origin from a Palearctic genus. The review of genera includes descriptions of imagos, genitalia, larvae, and pupae with illustrations of selected species. A new genus and a new species from Alabama and Mississippi, United States are described with illustrations of imago, wing venation, and male and female genitalia.

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Perret, Alexander James. "A MULTI-SCALE APPROACH TO EVALUATE THE EFFECT OF THE INVASIVE AQUATIC PLANT HYDRILLA (HYDRILLA VERTICILLATA) ON LITTORAL ZONE HABITAT OF JUVENILE LARGEMOUTH BASS (MICROPTERUS SALMOIDES)." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11012007-151122/.

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Two experiments were conducted to investigate the hypothesis that exotic macrophytes alter littoral zone habitat and impact fish that inhabit these areas. The pond experiment was conducted to explore impacts of exotic invasive plants on growth and condition of juvenile largemouth bass (Micropterus salmoides). The second experiment was conducted at a smaller scale in aquaria to simulate an invasion of hydrilla (Hydrilla verticillata) and its influence on juvenile bass foraging. Fish experienced slower growth in the hydrilla treatment than in the diverse, and the ability of bass to capture prey fish was impeded in hydrilla. Juvenile bass growth decreased in habitats containing hydrilla and is likely a result of increased difficulty in capturing quality prey items such as small fish. Results from the two experiments collectively supported my hypothesis that hydrilla growth altered the littoral zone habitat such that foraging was hindered and resulted in slower growth.

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Katam, Ramesh. "MOLECULAR AND BIOCHEMICAL ANALYSIS OF WATER STRESS-INDUCED RESPONSES IN GRAPE." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11052008-162021/.

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Water stress affects vine productivity, disease tolerance, and enological characteristics of grape. Florida Hybrid Bunch grape are developed through hybridization of local grape spp with Vitis vinifera. These cultivars are mostly grown in southeast region of United States. Water deficit conditions resulted due to failure of rains in the region has developed concern among Florida grape growers to increase water use efficiency of grape. The goal of this research is to identify genes and proteins differentially expressed in response to water stress and to correlate these changes with enological characteristics. Investigating transcripts and proteins will allow us to correlate them and confirm the involvement of specific genes responding to stress. Florida hybrid bunch Suwannee grape plants were maintained under green house conditions. Water stress was induced by withholding irrigation. The leaf samples were collected from both irrigated and stressed plants at 5, 10, 15 and 20 day interval. We generated over 200 Subtractive Hybridization PCR products from control and water stressed leaf tissues. Cloning, sequencing and transcript analysis revealed that, 54 genes related to drought and defense regulated pathways out of 125 characterized transcripts. Proteins were extracted from leaf tissue with trichloroacetic acid /acetone and separated by two-dimensional polyacrylamide gel electrophoresis (2D-PAGE). The proteins were sequenced in LC/Mass Spectrophotometer. The most important differentially expressed genes include sucrose synthase, actin, isoprene synthase, ABF3, SNF1 related protein kinase, WRKY type transcription factors, AP2, ASR2, glyoxalase I and, cytochrome b which play significant role in cell permeability, transportation, photosynthesis and, maintenance in osmotic stress. We have found that ribulose bisphosphate carboxylase and phosphoribulokinase, which play major role in photosynthesis, were suppressed in response to water stress in Florida hybrid bunch. The results suggested that water stress affects expression of cDNAs associated with defense and drought regulated functions. Such profiling studies will be used to explicate specific pathways disconcerted by water deficit treatments, and in the identification of varietal differences.

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Chen, Kai. "The Valuation and Risk Management of a DB Underpin Pension Plan." Thesis, 2007. http://hdl.handle.net/10012/3144.

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Hybrid pension plans offer employees the best features of both defined benefit and defined contribution plans. In this work, we consider the hybrid design offering a defined contribution benefit with a defined benefit guaranteed minimum underpin. This study applies the contingent claims approach to value the defined contribution benefit with a defined benefit guaranteed minimum underpin. The study shows that entry age, utility function parameters and the market price of risk each has a significant effect on the value of retirement benefits. We also consider risk management for this defined benefit underpin pension plan. Assuming fixed interest rates, and assuming that salaries can be treated as a tradable asset, contribution rates are developed for the Entry Age Normal (EAN), Projected Unit Credit(PUC), and Traditional Unit Credit (TUC) funding methods. For the EAN, the contribution rates are constant throughout the service period. However, the hedge parameters for this method are not tradable. For the accruals method, the individual contribution rates are not constant. For both the PUC and TUC, a delta hedge strategy is derived and explained. The analysis is extended to relax the tradable assumption for salaries, using the inflation as a partial hedge. Finally, methods for incorporating volatility reducingand risk management are considered.

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Lu, Fanyu. "Does Economic Policy Uncertainty Affect Corporate Pension Plans?" Thesis, 2021. https://hdl.handle.net/2440/134223.

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Prior research shows that corporate pension policies are significantly influenced by tax incentives. While the existing literature extensively focuses on the effect of firm and pension characteristics on corporate defined-benefit (DB) pension plans, it ignores how economic policy uncertainty may affect DB plans. In other words, does an increase in economic policy uncertainty in the political environmental and economic policies weaken firms’ capacity to contribute cash to DB pension funds, worsening pension portfolio performance? In this thesis, I examine the effect of economic policy uncertainty on firms’ decisions regarding their cash contributions to DB pension plans and the level of underfunding of pension plans. Consistent with risk-shifting theory, I find that the underfunding of DB pension plans increases when economic policy uncertainty rises. This result holds after addressing potential endogeneity issues. The unfavourable effect of economic policy uncertainty on the funding status of corporate pension plans is more pronounced during periods of financial crises and economic recessions. A subsample analysis indicates that this unfavourable effect is also stronger in firms with higher capital expenditure, dividend payouts and executive salaries and weaker in firms with higher corporate social responsibility scores. In addition to reducing cash contributions to corporate pension funds when economic policy uncertainty increases, firms may also use aggressive asset allocation strategies to increase the risk and return of pension assets, again supporting risk-shifting theory. The final part of the empirical analysis is a channel analysis, which finds that the effect of economic policy uncertainty on pension underfunding levels occurs via a tangible channel, financial constraints.
Thesis (MPhil) -- University of Adelaide, Adelaide Business School, 2021

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McNicholas, Elizabeth A. "Human flourishing in the American city a new plan for Detroit's underserved population /." 2006. http://etd.nd.edu/ETD-db/theses/available/etd-04202006-110444/.

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"Le plan d'architecture: procédures de forme Relevés à Pienza, Sumvitg, Helsinki, Venise, Bruxelles." Université catholique de Louvain, 2004. http://edoc.bib.ucl.ac.be:81/ETD-db/collection/available/BelnUcetd-07062004-115538/.

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"Confrontation de sept modèles explicatifs des visées de la planification en éducation : élaboration du plan d'éducation pour tous au Rwanda : études de cas." Université catholique de Louvain, 2007. http://edoc.bib.ucl.ac.be:81/ETD-db/collection/available/BelnUcetd-08272007-155028/.

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"Noncontact dimensional metrology by triangulation under laser plane lighting : development of new ambulatory instruments / Métrologie dimensionnelle sans contact par triangulation sous éclairage par plans laser : développement de nouveaux instruments ambulatoires." Université catholique de Louvain, 2006. http://edoc.bib.ucl.ac.be:81/ETD-db/collection/available/BelnUcetd-03092006-140258/.

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Miña, Díaz Erwin. "Asymptotics for Faber polynomials and polynomials orthogonal over regions in the complex plane." Diss., 2006. http://etd.library.vanderbilt.edu/ETD-db/available/etd-06062006-132316/.

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Hausmann, Chris. "The best laid plans bodies, thwarted objectives, stubborn inequalities and unexpected encounters /." 2008. http://etd.nd.edu/ETD-db/theses/available/etd-03272008-155048/.

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Dissertations / Theses on the topic 'DB plan'

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