Bibliografie tematiche / Dunnart

Indice

Articoli di riviste
Tesi
Libri
Capitoli di libri
Atti di convegni
Rapporti di organizzazioni

Letteratura scientifica selezionata sul tema "Dunnart"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 14 febbraio 2022

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Consulta la lista di attuali articoli, libri, tesi, atti di convegni e altre fonti scientifiche attinenti al tema "Dunnart".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Articoli di riviste sul tema "Dunnart"

Haythornthwaite, Adele S. "Microhabitat use and foraging behaviour of Sminthopsis youngsoni (Marsupialia:Dasyuridae) in arid central Australia". Wildlife Research 32, n. 7 (2005): 609. http://dx.doi.org/10.1071/wr04126.

Testo completo

Abstract (sommario):

In this study, fluorescent pigment tracking was used to determine the microhabitat use and foraging behaviour of a small insectivorous marsupial, Sminthopsis youngsoni (the lesser hairy-footed dunnart), in the dunefields of the Simpson Desert, south-western Queensland. In total, 25 successful trails were traced over the duration of this study, between March 1996 and April 1998. Nocturnal foraging trails were identified, then the distance travelled by the dunnart through each microhabitat type (nine in all) was measured and accumulated for each trail and compared with surrounding available microhabitats along control trails. This provided an index of selectivity of microhabitat use. Terrestrial invertebrates were collected from both actual and control trails to measure food availability. Dunnarts strongly selected open microhabitats when foraging, with the periphery of spinifex hummocks (up to 20 cm from the edge of a spinifex hummock) being favoured. Spinifex itself was avoided unless shelter was sought (i.e. immediately after release). Potential invertebrate prey captured along the actual trails travelled by dunnarts tended to occur in greater numbers and were larger than those captured along the control trails, indicating that dunnarts can accurately locate resource-rich areas in which to forage. Clearly, the foraging strategies used by this species enable it to successfully exploit patchy and unpredictable food resources, thereby ensuring its continued persistence and relative abundance in an unstable environment.

Gli stili APA, Harvard, Vancouver, ISO e altri

Bleicher, Sonny S., e Christopher R. Dickman. "On the landscape of fear: shelters affect foraging by dunnarts (Marsupialia, Sminthopsis spp.) in a sandridge desert environment". Journal of Mammalogy 101, n. 1 (15 febbraio 2020): 281–90. http://dx.doi.org/10.1093/jmammal/gyz195.

Testo completo

Abstract (sommario):

Abstract Disturbances such as fire reduce the structural complexity of terrestrial habitats, increasing the risk of predation for small prey species. The postfire effect of predation has especially deleterious effects in Australian habitats owing to the presence of invasive mammalian predators, the red fox (Vulpes vulpes) and feral cat (Felis catus), that rapidly exploit burned habitats. Here, we investigated whether the provision of artificial shelter could alleviate the risk of predation perceived by two species of small marsupial, the dunnarts Sminthopsis hirtipes and S. youngsoni, in open postfire habitat in the sandridge system of the Simpson Desert, central Australia. We installed artificial shelters constructed from wire mesh that allowed passage of the dunnarts but not of their predators at one site, and measured and compared the perceived risk of predation by the dunnarts there with those on a control site using optimal patch-use theory (giving-up densities, GUDs). GUDs were lower near artificial shelters than away from them, and near dune crests where dunnarts typically forage, suggesting that the shelters acted as corridors for dunnarts to move up to the crests from burrows in the swales. Foraging was lower near the crest in the control plot. Two-day foraging bouts were observed in dunnart activity, with recruitment to GUD stations occurring a day earlier in the augmented shelter plot. Despite these results, the effects of the shelters were localized and not evident at the landscape scale, with GUDs reduced also in proximity to sparse natural cover in the form of regenerating spinifex grass hummocks. Mapping dunnart habitat use using the landscape of fear (LOF) framework confirmed that animals perceived safety near shelter and risk away from it. We concluded that the LOF framework can usefully assess real-time behavioral responses of animals to management interventions in situations where demographic responses take longer to occur.

Gli stili APA, Harvard, Vancouver, ISO e altri

Garrett, Andrew, Virginia Lannigan, Nathanael J. Yates, Jennifer Rodger e Wilhelmina Mulders. "Physiological and anatomical investigation of the auditory brainstem in the Fat-tailed dunnart (Sminthopsis crassicaudata)". PeerJ 7 (30 settembre 2019): e7773. http://dx.doi.org/10.7717/peerj.7773.

Testo completo

Abstract (sommario):

The fat-tailed dunnart (Sminthopsis crassicaudata) is a small (10–20 g) native marsupial endemic to the south west of Western Australia. Currently little is known about the auditory capabilities of the dunnart, and of marsupials in general. Consequently, this study sought to investigate several electrophysiological and anatomical properties of the dunnart auditory system. Auditory brainstem responses (ABR) were recorded to brief (5 ms) tone pips at a range of frequencies (4–47.5 kHz) and intensities to determine auditory brainstem thresholds. The dunnart ABR displayed multiple distinct peaks at all test frequencies, similar to other mammalian species. ABR showed the dunnart is most sensitive to higher frequencies increasing up to 47.5 kHz. Morphological observations (Nissl stain) revealed that the auditory structures thought to contribute to the first peaks of the ABR were all distinguishable in the dunnart. Structures identified include the dorsal and ventral subdivisions of the cochlear nucleus, including a cochlear nerve root nucleus as well as several distinct nuclei in the superior olivary complex, such as the medial nucleus of the trapezoid body, lateral superior olive and medial superior olive. This study is the first to show functional and anatomical aspects of the lower part of the auditory system in the Fat-tailed dunnart.

Gli stili APA, Harvard, Vancouver, ISO e altri

Lang, Carol J., Anthony D. Postle, Sandra Orgeig, Fred Possmayer, Wolfgang Bernhard, Amiya K. Panda, Klaus D. Jürgens, William K. Milsom, Kaushik Nag e Christopher B. Daniels. "Dipalmitoylphosphatidylcholine is not the major surfactant phospholipid species in all mammals". American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 289, n. 5 (novembre 2005): R1426—R1439. http://dx.doi.org/10.1152/ajpregu.00496.2004.

Testo completo

Abstract (sommario):

Pulmonary surfactant, a complex mixture of lipids and proteins, lowers the surface tension in terminal air spaces and is crucial for lung function. Within an animal species, surfactant composition can be influenced by development, disease, respiratory rate, and/or body temperature. Here, we analyzed the composition of surfactant in three heterothermic mammals (dunnart, bat, squirrel), displaying different torpor patterns, to determine: 1) whether increases in surfactant cholesterol (Chol) and phospholipid (PL) saturation occur during long-term torpor in squirrels, as in bats and dunnarts; 2) whether surfactant proteins change during torpor; and 3) whether PL molecular species (molsp) composition is altered. In addition, we analyzed the molsp composition of a further nine mammals (including placental/marsupial and hetero-/homeothermic contrasts) to determine whether phylogeny or thermal behavior determines molsp composition in mammals. We discovered that like bats and dunnarts, surfactant Chol increases during torpor in squirrels. However, changes in PL saturation during torpor may not be universal. Torpor was accompanied by a decrease in surfactant protein A in dunnarts and squirrels, but not in bats, whereas surfactant protein B did not change in any species. Phosphatidylcholine (PC)16:0/16:0 is highly variable between mammals and is not the major PL in the wombat, dunnart, shrew, or Tasmanian devil. An inverse relationship exists between PC16:0/16:0 and two of the major fluidizing components, PC16:0/16:1 and PC16:0/14:0. The PL molsp profile of an animal species is not determined by phylogeny or thermal behavior. We conclude that there is no single PL molsp composition that functions optimally in all mammals; rather, surfactant from each animal is unique and tailored to the biology of that animal.

Gli stili APA, Harvard, Vancouver, ISO e altri

Gardner, DK, L. Selwood e M. Lane. "Nutrient uptake and culture of Sminthopsis macroura (stripe-faced dunnart) embryos". Reproduction, Fertility and Development 8, n. 4 (1996): 685. http://dx.doi.org/10.1071/rd9960685.

Testo completo

Abstract (sommario):

Glucose and pyruvate uptake by individual embryos were measured in a marsupial species (stripe-faced dunnart) and a eutherian species (mouse). At each stage of development, nutrient uptake by the dunnart embryo was around an order of magnitude greater than that of the mouse embryo. The pattern of glucose uptake by the dunnart embryo was not like that for any eutherian embryo, all of which have a low glucose uptake before the blastocyst stage. Rather, in the dunnart embryo there was a significant increase in glucose uptake after the third cleavage division, increasing from 13.6 pmol embryo h-1 at the 4-cell stage to 34.9 pmol embryo h-1 by the 8-cell stage. This increase in glucose uptake before blastocyst formation may be attributed to an increased energy demand associated with the movement of cells within the dunnart embryo. Using a new culture system, it was possible to culture 66% of dunnart embryos at the 2-4-cell stage and 80% of those at the 8-16-cell stage to the unilaminar blastocyst stage. Embryos cultured from the 2-cell to the 4-cell stage were retarded by around 12 h when they reached the blastocyst stage. Developmental retardation was also reflected in the pattern of nutrient uptake, which lagged behind that of embryos developed in vivo. The present study has shown that it is possible to culture the early marsupial embryo to the blastocyst stage in a serum-free culture system, while concomitantly quantifying embryonic nutrient requirements. Such an approach is essential for species where there is a paucity of material for study.

Gli stili APA, Harvard, Vancouver, ISO e altri

Taggart, DA, CM Leigh, VR Steele, WG Breed, PD Temple-Smith e J. Phelan. "Effect of cooling and cryopreservation on sperm motility and morphology of several species of marsupial". Reproduction, Fertility and Development 8, n. 4 (1996): 673. http://dx.doi.org/10.1071/rd9960673.

Testo completo

Abstract (sommario):

The effects of long-term cooling and freezing on sperm motility are described for six marsupial species: the fat-tailed dunnart, koala, brushtail possum, long-footed potoroo, northern brown bandicoot and ring-tailed possum. The effects of up to eight days of cooling at 4 degrees C on the motility of dunnart spermatozoa and the effect of cryopreservation on spermatozoa of the other species were determined. The cryoprotectant used was a Tris-citrate-fructose-egg yolk-glycerol diluent. The percentage and rating of sperm motility, and sperm structure, as determined by light microscopy, were investigated. Sperm motility in the fat-tailed dunnart was retained for up to six days when cooled to 4 degrees C, suggesting that sperm from this species have some degree of tolerance to cold shock. After this time, however, the percentage of motile spermatozoa and their motility rating declined. In all species except the fat-tailed dunnart, reinitiation of motility following cryopreservation occurred across a range of glycerol concentrations (4-17%). Cryoprotectant containing 6% and/or 8% glycerol resulted in little change of motility rating or of the percentage of live sperm after thawing, although there was some decline in the percentage of motile sperm. The unusual structural and motility characteristics of dunnart spermatozoa may account for the lack of success of sperm cryopreservation in this species.

Gli stili APA, Harvard, Vancouver, ISO e altri

Woolley, P. A. "Diurnal resting sites of the nocturnal dasyurid marsupial Sminthopsis douglasi in Bladensburg National Park, Queensland". Australian Mammalogy 39, n. 1 (2017): 121. http://dx.doi.org/10.1071/am16013.

Testo completo

Abstract (sommario):

An attempt has been made to determine where Julia Creek dunnarts (Sminthopsis douglasi), small nocturnal dasyurid marsupials, rest during the day under differing seasonal conditions. A short-term study was carried out in Bladensburg National Park, near the southern edge of its known distribution on the Mitchell grass downs in Queensland. Radio-collared individuals were located in cracks and holes. None of the males and females (including one with young in the pouch) were found to use the same resting site over periods of up to nine days, suggesting that they may be nomadic. Climatic factors may have affected the size of the dunnart population over the course of the study.

Gli stili APA, Harvard, Vancouver, ISO e altri

Read, John L., Matthew J. Ward e Katherine E. Moseby. "Factors that influence trap success of sandhill dunnarts (Sminthopsis psammophila) and other small mammals in Triodia dunefields of South Australia". Australian Mammalogy 37, n. 2 (2015): 212. http://dx.doi.org/10.1071/am14020.

Testo completo

Abstract (sommario):

Optimised detection and sensitivity of fauna-monitoring programs is essential for the adaptive management of threatened species. We describe the influence of trap type, trapping duration and timing on the detection rates of small vertebrates, in particular the nationally endangered sandhill dunnart (Sminthopsis psammophila) in its two primary populations in South Australia. A total of 118 and 155 sandhill dunnarts were captured from the Middleback and Yellabinna regions, respectively, from five trapping sessions between 2008 and 2012. Wide deep pitfall traps (225 mm diameter × 600–700 mm deep) captured significantly more adult sandhill dunnarts than shorter, narrower pitfalls (150 mm diameter × 500 mm deep) or Elliott traps. Deep pitfall traps also captured significantly more hopping mice (Notomys mitchellii) but smaller mammal species were equally trapable in deep or short pitfall traps. Capture rates declined through successive nights of trapping. Capture rates of sandhill dunnarts were greatest in one study region when the moon illumination was less than 40% compared with fuller moon phases but were not affected by moon illumination in the other study region. The results suggest that higher capture rates of sandhill dunnarts will be achieved when using wide, deep pitfall traps on dark nights during the first two nights of trapping. Trapping in summer detected more juvenile sandhill dunnarts than trapping in winter.

Gli stili APA, Harvard, Vancouver, ISO e altri

Woinarski, J. C. Z., P. A. Woolley e S. V. Andyck. "The Distribution of The Dunnart Sminthopsis butleri." Australian Mammalogy 19, n. 1 (1996): 27. http://dx.doi.org/10.1071/am96027.

Testo completo

Abstract (sommario):

Three records of the dunnart Sminthopsis butleri from Bathurst and Melville Islands extend the known range of this species from a single location in the Kimberley, Western Australia, to the Northern Territory. The meagre ecological information on this species is documented.

Gli stili APA, Harvard, Vancouver, ISO e altri

ARRESE, C. A., J. RODGER, L. D. BEAZLEY e J. SHAND. "Topographies of retinal cone photoreceptors in two Australian marsupials". Visual Neuroscience 20, n. 3 (maggio 2003): 307–11. http://dx.doi.org/10.1017/s0952523803203096.

Testo completo

Abstract (sommario):

Microspectrophotometry indicates the presence of at least three cone visual pigments in two Australian marsupials, the fat-tailed dunnart (Sminthopsis crassicaudata) and honey possum (Tarsipes rostratus). Here we have examined the distribution of cone types using antisera, JH455 and JH492, that recognize short-wavelength-sensitive (SWS) and medium-to-long-wavelength-sensitive (M/LWS) cone opsins, respectively. SWS cones were concentrated in dorso-temporal retina in the dunnart with a shallow decreasing gradient extending to the periphery (2300–1500/mm2). In the honey possum, SWS cones showed a uniform distribution (2700/mm2), except for a slight increase in a narrow peripheral band (3100/mm2). In both species, M/LWS cones dominated and their distributions were similar to those of retinal ganglion cells: a horizontal streak in the dunnart (31,000–21,000/mm2) and a shallow mid-ventral to peripheral gradient in the honey possum (37,000–26,000/mm2). A low number of cones remained unlabeled when the antisera were combined revealing further minority cone population(s). We discuss cone distributions in relation to visual capabilities and requirements of the species.

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Tesi sul tema "Dunnart"

Bjursell, Alice. "Identifying the reproductive state of female Julia Creek dunnarts (Sminthopsis douglasi) by behavioural observations". University of Southern Queensland, Faculty of Sciences, 2006. http://eprints.usq.edu.au/archive/00004243/.

Testo completo

Abstract (sommario):

[Abstract]: The Julia Creek dunnart (Sminthopsis douglasi) is an endangered carnivorous marsupial. A recovery plan for the species has been initiated by Queensland Parks and Wildlife Service, which includes captive breeding.An important factor in breeding S. douglasi is the identification of oestrus. The current method to identify oestrus consists of examining urine samplesfor presence of cornified cells. To collect urine, the animals have to be removed from their cages and restrained. This method is stressful for theanimals, as well as time consuming. The aim of this study was to identify specific behaviour of S. douglasi associated with oestrus, which could be readily observed without the need for handling the animal. This wouldprovide a non-invasive way of identifying oestrus, which would facilitate breeding the species in captivity and planning conservation programs.Behaviour of S. douglasi was observed throughout the night by video recording. The most striking result was the increase in activity of the female when she was in oestrus compared to non-oestrus. The most informativebehaviour to observe was entry by the female into the nest box and the frequency with which she entered the area closest to the wall of the enclosure. A discriminant function analysis generated an equation with anover-all predictive power (OPP, the probability of making an accurate identification of reproductive state) of 89%. This result was obtained by watching two random five-minute periods of activity. The equation was tested and verified with new individuals and attained a similar level of OPP. However, the equation was less accurate when the observed female’s social context was changed from being housed adjacent to a male, to being accompanied by another female or housed singularly. Consistent with thesensitivity of activity levels as an indicator, the distance run in an exercise wheel was also a good predictor of oestrous state. Females ran a significantly longer distance in their exercise wheel when in oestruscompared to non-oestrus (p<0.001).

Gli stili APA, Harvard, Vancouver, ISO e altri

Hayter, Dawn. "Reproductive and social behaviour of the dunnart, sminthopsis crassicaudata /". Title page, contents and abstract only, 1994. http://web4.library.adelaide.edu.au/theses/09SB/09sbh426.pdf.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Hocking, Michael. "Social interactions and reproductive behaviour of the fat-tailed dunnart, Sminthopsis crassicaudata, in captivity /". Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09SPS/09spsh685.pdf.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Mcilvenny, Jason Daniel. "Holocene evolution of Dunnet Bay, Caithness, Scotland". Thesis, University of Aberdeen, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521338.

Testo completo

Abstract (sommario):

Dunnet Bay in Caithness, Northern Scotland was chosen as a study site to look at the relationship between dune stability and climatic change during the late Holocene in Northern Scotland. The surviving drift deposits of Dunnet Bay consist of aeolian and organic soils overlying the shelly till which forms mounds and ridges beneath the overlying deposits. The surviving drift deposits have been deposited within the last 10,000 years. The oldest date acquired is from the lower inter-tidal peat which was dated to approximately 7,720–7,580 yrs BP. The aeolian sediment which makes up the bulk of the main dune ridge and a large percentage of the central links area is of very recent origin and was deposited rapidly during storm events in the Little Ice Age climatic event. An unconformity between the upper aeolian recent sands and older sediment was found. The unconformity occurs between approximately 250–1900 yrs BP and exists in the main dune sequence and links The depositional phases interpreted from the study can be associated with those found in other dune studies and proxy data. The timings of the depositional phases can be partially associated with levels of chloride found in the GISP2 core and storm circulation index data produced from a proxy ice core from Greenland (Mayewski & White, 2002), however some inconsistencies exist. These inconsistencies imply that the ice core record may not completely mirror timings of dune instability in Northern Scotland. Similar studies in the UK and around the North Atlantic basin show only partial correspondence with the transition timings at Dunnet. Coastal dune and sediment stratigraphy can therefore be seen as a low resolution localised record of coastal change of which climate plays a major role but not sufficiently consistent over regional areas to provide a clear regional pattern. A thin foraminifera rich shelly sand layer found beneath the inter-tidal peat may be the result of an extreme run-up event caused by the Storegga slides approximately 8,200 yrs BP. The thesis provides a detailed look at the development of the sedimentary history of Dunnet Bay.

Gli stili APA, Harvard, Vancouver, ISO e altri

Venter, Martin Philip. "A methodology for numerical prototyping of inflatable dunnage bags". Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97124.

Testo completo

Abstract (sommario):

Thesis (PhD)--Stellenbosch University, 2015.
ENGLISH ABSTRACT: Dunnage bags are an inflatable dunnage variant, positioned and inflated between goods in multi-modal containers to restrain and protect the goods while in transit. This project endeavours to develop a simple method of generating new numerical prototypes for dunnage bags suitable for simulating operational loading of the bags. Previous research has produced a model that simulates the inflation of a paper dunnage bag using a simple pressure load. A dunnage bag reinforced with plain-woven polypropylene was chosen as the test case. Woven polypropylene is a highly non-linear, non-continuous, non-homogeneous material that requires specialised material models to simulate. A key aspect of this project was to develop a simple method for characterising woven-polypropylene and replicating it's response with material models native to LS-DYNA. The mechanical response of the plain-woven polypropylene was tested using a bi-axial tensile test device. The material response from physical testing was then mapped to two material models using the numerical optimiser LS-OPT. The response of the calibrated material models was found to correlate well with the measured response of the woven material. Dunnage bags are subjected to cyclic loading in operation. In order to capture the effects of compressing the contained gas, a gas inflation model was added to the model that calculates the pressure in the bag based on the Ideal Gas Law. A full bag model making use of the calibrated material models and the inflation model was subjected to a cycled boundary condition simulating loading and unloading of an inflated dunnage bag. The two prototype models captured the pressure drop in the bag due to material plastic deformation and the restraining force produced by the bag to within 10 %. The prototype models were also found suitable for predicting burst pressure in voids of arbitrary size and shape.
AFRIKAANSE OPSOMMING: Stusakke is 'n opblaasbare soort stumateriaal wat tussen goedere in multimodale vraghouers geposisioneer en opgeblaas word om sodoende die goedere vas te druk en te beskerm tydens vervoer. Hierdie projek poog om 'n eenvoudige manier te ontwikkel om nuwe numeriese prototipes vir stusakke, geskik om operasionele lading van die sakke te simuleer, te ontwikkel. Vorige navorsing het 'n model ontwikkel wat die opblaas van 'n papier stusak met eenvoudige drukkrag simlueer. 'n Hoë-vlak stusak versterk met plein-geweefde polipropileen, is gekies om getoets te word. Geweefde polipropoleen is 'n hoogs nie-lineêre, onderbroke, nie-homogene materiaal wat gespesialiseerde materiaalmodelle nodig het vir simulasie. Een van die fokuspunte van hierdie projek is om 'n eenvoudige metode te ontwikkel om die karaktereienskappe van polipropoleen te identifiseer en die gedrag daarvan na te maak met die materiaalmodelle van LSDYNA. Die meganiese reaksie van die plein-geweefde polipropoleen is getoets met 'n biaksiale/tweeassige trektoets-toestel. Die materiaal se reaksie op die fisiese toets is ingevoer op 'n numeriese optimiseerder, LS-OPT, om op die materiaalmodelle te toets. Die reaksie van die gekalibreerde materiaalmodelle het goed gekorelleer met die gemete reaksie van die geweefde materiaal. Stusakke word tydens diens onderwerp aan sikliese lading. Om die effek van die saamgepersde gas vas te stel is 'n gas-opblaasbare model bygevoeg by die model wat die druk in die sak bereken, soos gebaseer op die Ideale Gas Wet. 'n Volskaalse sakmodel wat gebruik maak van die gekalibreerde materiaalmodelle en die opblaas-model is onderwerp aan sikliese grensvoorwaardes wat die lading en ontlading van 'n opblaasbare stusak simuleer. Die twee prototipe modelle het die drukverlies in die sak a.g.v. die materiaal-plastiek vervorming en die bedwingingskrag van die sak beperk tot 10 %. Die protoyipe modelle is ook geskik bevind om barsdruk in arbitrêre leemtes te voorspel.

Gli stili APA, Harvard, Vancouver, ISO e altri

Venter, Martin Philip. "Development and validation of a numerical model for an inflatable paper dunnage bag using finite element methods". Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6827.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Sanchez, Leslie Scarlett. "Identifying Success Factors in the Wood Pallet Supply Chain". Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/32970.

Testo completo

Abstract (sommario):

Pallets are a critical component of logistics infrastructure. Approximately 1.9 billion pallets are used each year in the United States for transportation of goods, from raw materials to finished products. Solid wood pallets represent 90% to 95% of the pallet market. To run their operations, wood pallet companies deal with suppliers, customers, and other supply chain components. Each of the steps is important to deliver the right products, with the required quality, and in a timely fashion. However, there is little research about the industryâ s supply chain practices. The objective of this research is to increase the understanding of the U.S. wood pallet manufacturing industry, its supply chain management practices, and factors affecting the supply chain management processes. To accomplish the research objectives, a nationwide mail survey of wood pallet manufacturers was carried out. In total 1,500 companies were sent questionnaires and the response rate was 14%. A model for supply chain success factors was developed based on previous research and was analyzed using the results from the survey. Results of the survey provide an up-to-date profile of the US wood pallet industry. It was found that pallet production per company was 727,229 units on average during 2009. Out of the 1500 respondents, 38.6% indicated they were medium-sized companies (20 to 99 employees) and 53.9% small companies (1 to 19 employees). Thirty five percentage of respondents indicated that their sales were less than one million dollars and 43% from one to five million dollars. Also, 45% of respondents were involved in pallet recycling or repair, and these companies indicated that, on average, 42% of the material in a recycled pallet is, in fact, new material. Regarding Supply Chain practices, close to three-quarters (73.1%) of respondents sold their products directly to customers and the order lead time for raw materials to shipment was 1 to 10 days for 81.9% of companies. The most important factors for purchasing decisions are availability, cost, and reliability of supplier (all rated 4.4 in an importance scale from 1 to 5, respectively). Respondentsâ answers suggest a preference to work with domestic materials (rated 4.3); however, respondents also indicated that there is currently a high level of competition for raw materials (rated 4.3). Results also indicated that information technology (IT) appears to receive little attention from wood pallet manufacturers, given that the importance of items in this area were rated relatively low, especially the use of internet for purchasing and training in IT (rated 2.2 and 2.1, respectively). Lastly, 86.0% of respondents did not believe that their customers would be willing to pay a premium for environmentally certified pallets, citing cost as the major barrier for a higher demand of these products. Also, a theoretical framework of supply chain management was designed, developed, and tested with factor analysis, allowing identification of seven factors in the wood pallet supply chain: (1) environmental uncertainty, (2) information technology, (3) supply chain relationships, (4) value-added process, (5) supply chain management performance, (6) business management, and (7) customer satisfaction. Relationships between factors were tested using multiple linear regression. Results show that value-added process positively affects supply chain relationships, and these in turn are positively correlated to supply chain management performance and customer satisfaction. Results from this research are useful for the industry to formulate a well-informed supply chain management strategy by understanding the connections between the different supply chain management practices and the business performance and customer satisfaction. The information presented is also useful for organizations supporting the wood pallet industry to design more effective assistance and educational programs.
Master of Science

Gli stili APA, Harvard, Vancouver, ISO e altri

Pollock, Jeffrey Charles. "Geology and paleotectonic history of the Tally Pond Group, Dunnage Zone, Newfoundland Appalachians : an integrated geochemical, geochronological, metallogenic and isotopic study of a Cambrian island arc along the peri-Gondwanan margin of Iapetus /". Internet access available to MUN users only, 2004. http://collections.mun.ca/u?/theses,62938.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

蔡睦蕎. "Compound Bookstore’s Spatial Attraction： Dunnan Eslite Bookstore for Example". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/91081912325022065496.

Testo completo

Abstract (sommario):

碩士
國立臺灣師範大學
工業教育學系
97
Traditional bookstores can not meet people’s needs in this society. Compound bookstores propose another style of stroll bookstore. This thesis studies the relations with attractive variables and willingness of consume again. In order to study this relation, this thesis uses correlational research method with Dunnan Eslite bookstore by consumer's viewpoint. Compound bookstores are classified “personal characters”, ”consume characters”, and “spatial attraction” in this thesis. The data collected from 302 samples are analyzed with the aid of SPSS computing software. The findings of this thesis are shown as follows: 1.Consider six factors of space images, the most satisfied factors are spatial image, spatial scale, spatial style which are given people comfortable feeling. 2.Agreements with the degree of “consumer personal Life style characters” and “consumer consume cognitive value characters” are positive correlations with repurchase intention. 3.Satisfactions with the degree of “image factors with spatial image” and “social clue factors with spatial image” are positive correlations with repurchase intention. 4.The results of stepwise regression show that “Bookstore environment” and “quality of spatial design” have relations with spatial image. The spatial image design is an important thing of bookstore management. The findings of this thesis are expected to be helpful for the managers and space designers of compound bookstores.

Gli stili APA, Harvard, Vancouver, ISO e altri

Fox, Don. "Structure, metamorphism and tectonic setting of metasedimentary rocks and mafic-ultramafic inclusions in the Dashwoods subzone of the Dunnage zone, southwestern Newfoundland /". 1992. http://collections.mun.ca/u?/theses,75451.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Libri sul tema "Dunnart"

Isaac Asimov. Hound Dunnit. London, England: Robson Books Ltd, 1988.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Jangaiah, Boya. Dunna. Nallagoṇḍa: Sāhitī Mitrulu, 1990.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

The Dorothy Dunnett companion. New York: Vintage Books, 2001.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

The Dorothy Dunnett companion. London: Michael Joseph, 1994.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Morrison, Elspeth. The Dorothy Dunnett companion. London: Penguin Books, 2001.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Jewett, Sarah Orne. The Dunnet Landing stories. New York: Modern Library, 1996.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

ill, Kellogg Steven, a cura di. Iva Dunnit and the big wind. New York: Dial Books for Young Readers, 1985.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Purdy, Carol. Iva Dunnit and the big wind. London: Hutchinson Children's, 1987.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Cafeo, Marie H. Who dunnit?: A comedy in two acts. 2^a ed. Carrollton, TX: In the Bag Pub., 1998.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Staal, Cees Roelof Van. Dunnage and Gander zones, New Brunswick: Canadian Appalachian region. [Fredericton]: New Brunswick Natural Resources and Energy, Mineral Resources, 1991.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Capitoli di libri sul tema "Dunnart"

Dwyer, Tim, Kim Marriott e Michael Wybrow. "Dunnart: A Constraint-Based Network Diagram Authoring Tool". In Graph Drawing, 420–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00219-9_41.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Cumming, Jeffrey M., Bradley J. Sinclair, Charles A. Triplehorn, Yousif Aldryhim, Eduardo Galante, Ma Angeles Marcos-Garcia, Malcolm Edmunds et al. "Dunnage". In Encyclopedia of Entomology, 1257. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_1009.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Murray, M. D., M. N. Orton e A. S. Cameron. "The Antarctic FleaGlaciopsyllus AntarcticusSmit and Dunnet". In Entomology of Antarctica, 393–95. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/ar010p0393.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Kim, Hang Woo, Jae Ho Han e Lee Ku Kwac. "The Development of Dunnage for Transportation of a Steel Roll Coil". In Key Engineering Materials, 339–44. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-978-4.339.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Wilt, Judith. "The Hero in “Gouvernance”: Family Romance in the Novels of Dorothy Dunnett". In Women Writers and the Hero of Romance, 160–94. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137426987_6.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Hopkins, Lisa. "The Body in the Library: Georgette Heyer, Dorothy Dunnett and Sarah Caudwell". In Burial Plots in British Detective Fiction, 63–91. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65760-4_4.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Kwac, Lee Ku, Hong Gun Kim e Hang Woo Kim. "The Production and Performance Estimation of Dunnage for Transportation of a Steel Roll Coil". In Engineering Plasticity and Its Applications, 1363–68. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-433-2.1363.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Golden, Jonathan. "Who Dunnit? New Clues Concerning the Development of Chalcolithic Metal Technology in the Southern Levant". In Archaeometallurgy in Global Perspective, 559–78. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-9017-3_21.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

"Dunnet shale". In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 439. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_44710.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Purshouse, Craig. "Dunnage v Randall [2016] QB 639". In Essential Cases: Tort Law. Oxford University Press, 2019. http://dx.doi.org/10.1093/he/9780191883736.003.0022.

Testo completo

Abstract (sommario):

Essential Cases: Tort Law provides a bridge between course textbooks and key case judgments. This case document summarizes the facts and decision in Dunnage v Randall [2016] QB 639. The document also included supporting commentary from author Craig Purshouse.

Gli stili APA, Harvard, Vancouver, ISO e altri

Atti di convegni sul tema "Dunnart"

Li, Yuan, e Shuh-Yuan Liou. "A Constraint Network Based System for Integrated Product Development". In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/cie-9101.

Testo completo

Abstract (sommario):

Abstract Integrated product development is the future of product development. Integrated product development is a process where both upstream (e.g., functional requirements, styling and cosmetic features, and packaging) and downstream (e.g., manufacturing considerations, testing, dunnage, and disposal) requirements of a product are handled concurrently with its geometry construction. In this research, the so-called ECHO (Engineering Constraint Handling and Optimization) system for integrated product development has been developed. A unique feature of this system is that it can explicitly represent and process both the upstream and downstream requirements. These requirements are represented in the form of constraint networks, rule networks, and assessment matrices. By solving for all of the feasible solutions, the ECHO system instructs the geometry construction, and thus ensures that both upstream and downstream requirements are reflected in the design. A case study for automotive piston development has been implemented to illustrate the capability and use of the ECHO system.

Gli stili APA, Harvard, Vancouver, ISO e altri

Kadooka, Kevin, e Nicholas Klymyshyn. "Analysis of Spent Nuclear Fuel Multipurpose Canister Dynamics During Rail Transportation". In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21705.

Testo completo

Abstract (sommario):

Abstract The primary mode of spent nuclear fuel transportation within the United States will be by railcar. One such system is the Atlas railcar, which is designed to transport 17 different spent nuclear fuel cask systems, including bare fuel systems and canister fuel systems. In the latter configuration, multipurpose canisters containing spent nuclear fuel may be placed within an overpack for storage, or within a cask for transportation. Compared to bare fuel systems, canister fuel systems have additional degrees of freedom for motion during transportation, because clearance between the cask and canister allows for some motion of the canister to occur relative to the cask. This work investigates the effect of canister motion on the shock and vibration imparted to the spent nuclear fuel within. Structural dynamic analyses have been conducted to identify the effects of canister to cask clearance, presence and type of dunnage, and loading direction and frequency. This modeling study calculates anticipated cask motion, canister motion, and spent nuclear fuel structural dynamic response to normal conditions of transportation railcar motion using finite element analysis methods that were developed to model the rail segment of the ENSA/DOE (Equipos Nucleares S.A., U.S. Department of Energy) multimodal transportation test of 2017.

Gli stili APA, Harvard, Vancouver, ISO e altri

Rapporti di organizzazioni sul tema "Dunnart"

Williams, H. The Dunnage Melange, Newfoundland, revisited. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/193848.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Piasecki, M. A. J. Tectonics across the Gander-Dunnage boundary in northeastern Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/133580.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Williams, H., M. A. J. Piasecki e D. Johnston. The Carmanville Melange and Dunnage - Gander Relationships in Northeast Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132580.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Whalen, J. B., K. L. Currie e M. A. J. Piasecki. A re-examination of relations between Dunnage subzones on southwest Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/134272.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Currie, K. L. A new look at Gander-Dunnage relations in Carmanville map area Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/132876.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Thomas, M. D., D. W. Halliday e D. V. O'dowd. Detailed Gravity Traverses in the Appalachian Dunnage and Gander Terranes, northern New Brunswick. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132591.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Cawood, P. A., e J. A. M. van Gool. Stratigraphic and structural relations within the western Dunnage Zone, Glover Island region, western Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/134268.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Currie, K. L. Reconsidering parts of Comfort Cove and Gander River map areas, Dunnage Zone of Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/193849.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Tod, J., e E. E. Ready. Aeromagnetic Total Field, Gradiometer, and VLF-EM Survey of Part of the Dunnage Zone, Central Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/126552.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Thomas, M. D., E. I. Tanczyk, M. Cioppa e D. V. O'dowd. Ground Magnetic and Rock Magnetism Studies near the Appalachian Dunnage - Gander Terrane Boundary, northern New Brunswick. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132598.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Offriamo sconti su tutti i piani premium per gli autori le cui opere sono incluse in raccolte letterarie tematiche. Contattaci per ottenere un codice promozionale unico!