A simultaneous demand and supply model for the U.S. ski/wakeboard boat market is estimated by three-stage least squares and iterated three-stage least squares methods using publicly available data. The model is used to test if, and to what extent, certain factors impact the annual quantity of new ski/wakeboard boats demanded and supplied. Statistical analysis suggests that the model does a good job of explaining the annual quantity of new ski/wakeboard boats demanded and supplied. The findings are most immediately beneficial to manufacturers and dealers. Dealers can use the results to better forecast demand which in turn will lead to more efficient production planning for manufacturers.

Thesis (M.Mar.Archaeol.) -- Flinders University, Department of Archaeology, 2006. / "A thesis submitted in partial fulfilment of the requirements for the degree of Master of Maritime Archaeology, Department of Archaeology, Flinders University". "May 2006". Includes bibliographical references (leaves 101-105). System requirements for remote version: Adobe Acrobat Reader to view PDF file.

Thesis (M. A.)--Texas A&M University, 2005. / "Major Subject: Anthropology" Title from author supplied metadata (automated record created on Apr. 27, 2007.) Vita. Abstract. Includes bibliographical references.

Electrified Vehicles (EVs), including Hybrid Electric Vehicles (HEVs) and Pure Electric Vehicles (PEVs), can provide substantial improvements in energy efficiency, emission reduction, and lifecycle cost over conventional vehicles solely powered by Internal Combustion Engines (ICE). Progress on electrification of marine vessels has been made, but the pace has been impacted by factors such as the different operational load profile of vessels, relatively small production levels and longer or varied lifetimes. In this dissertation, hybrid electric and pure electric propulsion system designs for fishing boats and passenger ferries are studied based on in-field acquired operational data. A new integrated marine propulsion system modeling and simulation method and a dedicated mobile data acquisition system have been introduced to analyze the energy efficiency, emission reduction, and lifecycle costs of new or retrofitted fishing boats and passenger ferries with hybrid electric and pure electric powertrains. Following the automotive industry Model Based Design (MBD) approach, modeling and simulation of electrified vessels using the acquired operation profile have been carried out using backward and forward-facing methods. Series hybrid electric and pure electric powertrain system designs with powertrain component models and rule-based system control, including a properly sized electric Energy Storage System (ESS) with a Supercapacitor (SC) or battery, have been studied. The total CO2 equivalent (CO2e) or Greenhouse Gas (GHG) emissions and lifecycle costs of various new, electrified vessel propulsion system designs have been evaluated. Clean propulsion system solutions for fishing boats and passenger ferries with detailed powertrain system and control system designs are given which provide a foundation for further research and development. This dissertation also addresses the environmental impact of Natural Gas (NG) as a transportation fuel, particularly for marine transportation use. A systematic evaluation of GHG emissions is provided for the upstream fuel supply chain of natural gas fuel in British Columbia (BC), Canada. The Liquefied Natural Gas (LNG) lifecycle GHG emissions produced in both the upstream supply chain and the downstream vessel propulsion are estimated quantitatively using manufacturer data and propulsion system models of marine vessels. Extensive data have been collected from oil and gas companies that have active operations in BC to determine the upstream supply chain GHG emissions of the NG fuel under three scenarios. The energy efficiency and emissions of natural gas engines are compared with traditional diesel fuel marine engines and generators. The results obtained indicate that LNG fuel can lower CO2e by 10% to 28% with reduced local air pollutants such as sulfur oxides and particulates, compared to conventional diesel fuel. However, engine methane slip during combustion should be monitored as it can have a significant impact on the GHG emissions and so offset the environmental benefits of LNG. / Graduate

The cemetery of Valsgärde, Sweden contains 92 human graves dating from the 3rdc. BCE to the 11thc. CE, the majority and most elaborate of which date to the Vendel and Viking Ages (approximately 500-1100 CE). This total consists of 15 unburnt boat graves, 15 inhumation and chamber graves, and 62 cremations. In addition to the human remains and wealthy goods, the site is noted for its richness in zooarchaeological material, with a variety of primarily domestic animals appearing buried alongside humans. One of the most commonly represented animals in these graves is the domestic dog (Canis familiaris), a trend which has been noted in many other sites from Vendel and Viking Age Sweden. This project quantifies and analyses the morphology of the dogs in the unburnt Vendel and Viking graves at Valsgärde in order to a) assemble a general typology and demographic profile for the population, b) assess the level of morphological variability in the population, and c) speculate on the possible roles these dogs may have played in Scandinavian society in the Late Iron Age. Comparisons are made between the character of dog burials in the Vendel vs Viking periods, to identify any notable shifts in trend over time. The analysis shows that while the size of the dogs generally remains consistent throughout both periods, a number of different types are represented within this limited size range, and the Viking Age burials contain notably fewer dogs than the graves of the Vendel Period.

Wood has been an integral part of the Scandinavians everyday life for thousands of years. There are still several substantial gaps in knowledge about their wood culture during the Late Iron Age since previous research has been focused on more common findings of inorganic materials like ceramics, metals and glass. Archaeologists rarely find wooden artifacts during excavations due to wood disintegrating a lot faster than metal in the ground. Valsgärde is one of Sweden’s most important Iron Age sites since several wooden remains were found there. They show parts of our distant past that we have yet to understand and gain knowledge about. The few preserved wooden artifacts from the Late Iron Age show a rich culture of wood carving. That is why this study focuses on those very few organic objects that are found. Wooden artifacts might potentially be used to determine the social status of the individuals in the graves. This is examined through a comparative analysis of the wooden remains from Valsgärde and other boat graves in Scandinavia. The analysis also reveals what type of wood the artifacts were made of, which makes it possible to determine if they could be from local trees or if they had to be imported. There seems to be a conscious choice of what kind of wood an object should be made of depending on the purpose at hand and social status. In some cases the choice of wood also seems to be based on the symbolic or mythological meaning of the artifact. This study uses previous microscopic wood analysis from the boat graves to give a more in-depth picture of the Scandinavian Late Iron Age wood culture as a whole.

Log-boats within the Ertebölle culture have had a broad use in the society. From social usesas transport and communication devises to economical uses within hunting and fishing. Thelog-boats have been quite large, larger than log-boats in later periods. With a length of up to 10 meters and a width of 0,5-1 meter the log-boat have been big enough to carry a family andthere gear along the cost. Even though the long and narrow shape of the log-boat have made them mostly suitable for calm and shallow water they have still aloud the people of theErtebölle culture to cross major waters such as the sound between Denmark and Sweden.

The main topic of diploma thesis is to create a business plan dealing with foundation of travel agency selling boat cruises. In theoretical part of the thesis I focused on business development concerning small and middle companies within Czech Republic with the accent on tourist industry area and description of necessities needed for forming a business plan. In practical part of the thesis I created a particular business plan, in which I pay attention to description of business environment for tourist industry and competition analysis. Part of the plan i salso establishing of marketing and financial plan. In conclusion I evaluate the whole idea from viability and realisation point of view.

My master´s thesis deals with the design of amphibian hull for VUT 001 Marabu aircraft. Part of this work is aerodynamic and hydrodynamics design of hull including flight mechanics with, take of and landing on the water. The last point of work is load calculation of float and landing gear and design of landing gear retraction mechanics.

This master’s thesis is concerned about the flow of hydro-mixture in pipelines. In the first part, I am reviewing the characteristics of disperse systems, pumps and pipelines used in hydro-mixture transportation. Slurry pumps and polyethylene HDPE pipelines receive an extra attention. In the second part, I am working with data obtained from the co-operation with the PROGROUPE Sediment Removal company. These data were measured during revitalization of the water dam Gabčíkovo. In the next step, I use the data to suggest the required characteristic for the slurry pump for pump station in project of revitalizing Borovoe lake, situated in Kazakhstan.