• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 124
  • 58
  • 40
  • 5
  • 4
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 286
  • 286
  • 88
  • 58
  • 53
  • 50
  • 49
  • 48
  • 46
  • 40
  • 31
  • 31
  • 29
  • 25
  • 24
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

Home Consumer Perceptions about Landscape Water Conservation and Relationships with Historical Usage

Milberger, Whitney F. 2010 May 1900 (has links)
Water is considered to be one of the most limited and precious resources on Earth. Due to this scarcity, water conservation has become essential in order to preserve water resources. Landscape plant material brings quality to urban and suburban lifestyles and increases value to home properties. Yet it has been shown that an excess amount of water is often applied to landscapes when the plant material does not in fact need the supplemental irrigation. A researcher based survey, the Landscape Water Conservation Survey, was sent to 799 single family homes in the College Station, TX. Data collection occurred from November 2005 through August 2006 with a 27% return. The survey asked the recipients 14 questions on water use and home consumers? perceptions. Historical landscape water usage was compiled from 2000-2002 which included actual water use, taxable value, of the residence, heated area, and the water meter identification number for these selected households supplied by The City of College Station Water Utilities. The survey indicates a strong disconnect between the amount of irrigation landscape plant materials need and the quantity of water that is actually applied. Surveyed home consumer perceptions demonstrate excessive amounts of irrigation were normally applied to landscape plant material when no irrigation was needed due to rainfall. Many respondents to The Landscape Water Management Survey indicated that they believed to have efficient irrigation practices in place when in actuality they do not. Educational resources are needed to teach the public on the amounts of irrigation landscape plant materials actually need, how to apply measured home irrigation practices, the principles of water conservation, and meeting the water requirements of varied landscape plant material. If these could be established and implemented, there would be a higher rate of conserving water and providing plant material with the sufficient amount of irrigation required.
62

Effect of Water Education on Reducing Residential Consumption in San Antonio, Texas

Rice, Jeremy Joseph 2009 August 1900 (has links)
Education is touted as one of the most effective and inexpensive measures for reducing water consumption for major cities. Coupled with additional water reducing strategies this education can have a significant impact. While, this is a generally accepted principle in the water resources community it has been difficult to accurately quantify the savings. Studies attempting to quantify reductions from these programs have been limited to small samples of neighborhoods. San Antonio is recognized as one of the leading conservation programs in the country at reducing the consumption of its customers. This study focused on over 3,000 customers in San Antonio who were classified as high-end users. The average monthly consumption for this group in June of 2006 exceeded 60,000 gallons per month. Each customer was sent an educational packet by mail with information to conduct an audit of the water use indoors and outdoors. Many of the customers used a free service allowing a trained professional of the San Antonio Water System to conduct their audit at no charge. Three groups were identified (1) those who received a educational packet, (2) those who conducted a home audit and reported they had conducted an audit, (3) those who had a free audit conducted by a trained technician. The water consumption for six months was tracked and compared to the previous year's consumption. Each of the three groups showed savings with those in the third group showing the greatest savings. Lastly, a cost analysis was conducted showing the effectiveness of the program in reducing consumption by cost.
63

A review of the management tactics against illegal use of slopelands in the Taitung County.

Zhang, Yao-wen 06 September 2005 (has links)
Taitung County is mountainous. Its geological structure is weak. Typhoon and heavy rain is frequent. Land erosion, landslide, and silt deposit in rivers is serious. In recent years, hilly areas are over-developed and conservation problem worsens. In typhoon and heavy rain, soil and other resources would be washed away and causes serious damage. The resources that people are relying on are vanishing. The purpose of this paper is to study the conservation of hilly areas, the management of river catchment areas, and the investigation and planning of the conservation of resources. This paper may help our people better understand the importance of conservation and t hey will be willing to work for a better Taitung Countye. This paper also studies the government conservation policies over the years and the their results, the farmers¡¦ understanding of the land, and conflict between the government and the farmers in land use in hilly areas. The study finds out that in managing the river catchment areas, government executive system is too complicated. Farmers do not appreciate the way the laws are implemented. They do not admit that their development cause water pollution or soil erosion. Rather, they believe that landslide and government policies in garbage dumping and road opening are to be blamed. Farmers are against most of the government policies especially in returning their land to government. There is a gap between government and farmer recognition. It is suggested that from now on, related personnel should investigate more and communicate more with people before preparing a policy. And since farmers are more willing to accept policies in subsidizing afforestation and soil protection, government should work on these issues.
64

Economics of soil and water conservation : theory and empirical application to subsistence farming in the Eastern Ethiopian highlands /

Bekele, Wagayehu, January 2003 (has links) (PDF)
Diss. (sammanfattning). Uppsala : Sveriges lantbruksuniv., 2003. / Härtill 4 uppsatser.
65

Arizona's Ground-Water Resources and Their Conservation

DeCook, K. J. 04 1900 (has links)
As Arizona enters the 1980's, we see that population growth, economic expansion, and resource depletion go hand-in-hand. Non-renewable groundwater-reserves in Arizona are being extracted at rates that cannot long continue without incurring serious consequences, economic as well as environmental. Growth of irrigated agriculture in the alluvial basins of the state, growth of urban and suburban populations, and,growth of industrial pumping, especially for copper mining -milling and for cooling of electric power generation facilities, have incurred a heavy draft on the state's aquifers. The net result of such ground-water withdrawals has been the "mining" of underground water reserves, a continuing overdraft in excess of natural replenishment, and steadily dropping water tables. This rate of depletion of ground water is generally considered to be the most serious water problem in Arizona. It is by no means the only problem. We must be concerned also with maintenance of water quality in view of existing and potential pollution; administrative systems for equitable and efficient water allocation and use; and the legal and environmental aspects of water acquisition and utilization.In order to assess present and possible future water conditions in the state relative to growth, water resources will be viewed from the standpoint of (1) water usage, both quantitative and qualitative; (2) conservation of water; (3) availability of water; and (4) projected water needs.
66

Water Supplies in the Southwest Making a Finite Supply Sustainable for a Growing Population

Santillan, Steven 17 December 2014 (has links)
Sustainable Built Environments Senior Capstone Project / Across the world, populations continue to grow while water supplies stay fixed. In the American Southwest, water supplies are at an all time low, yet warm, favorable conditions continue to lure residents to the area. With some of the country’s lowest fresh water reserves, it is imperative that changes are made to water usage trends and associated energy inefficiencies. An analysis of water usage in Tucson was conducted to evaluate potential solutions for reducing consumption and to correspondingly shrink energy usage. Case studies were investigated, census numbers were used to roughly calculate statistics, existing knowledge on water conservation techniques were researched, and alternative water filtration as well as distribution systems were scrutinized for their viability amongst current infrastructure. The potential to reduce water usage is greatest with the largest user of water in Tucson, the single-family residence. On average the single-family residence is capable of effectively saving nearly 25,000 gallons of water per year with efficient fixtures, another 25,000 gallons per year by reducing outdoor water use by half, and another 10,625 gallons by utilizing rainwater harvesting. Combine those savings and multiply them by the 225,000-240,000 single-family residents estimated to be in Tucson and the savings reach more than five billion gallons a year, effectively almost cutting water consumption in Tucson by a fifth. Further, to keep remaining usage impacts negligible, implementation of an indirect or direct potable water reuse system could satisfy populations for decades by reusing water that would normally be discarded as effluent. Water consumption must be curved so that it can satisfy a growing population’s needs. Amongst residents of Tucson, single-family residences have the greatest potential to reduce water and associated energy needs. Through conservation techniques, water harvesting, reducing outdoor water usage, and potable reuse, limited water supplies can satisfy future generations to come.
67

Art, water, and circles in what ways do study circles empower artists to become community leaders around water issues /

Jacoby, Jill Beth. January 2009 (has links)
Thesis (Ph.D.)--Antioch University, 2009. / Title from PDF t.p. (viewed March 25, 2010). Advisor: Jon Wergin, Ph.D. "A dissertation submitted to the Ph.D. in Leadership and Change program of Antioch University in partial fulfillment of the requirements for the degree of Doctor of Philosophy 2009."--from the title page. Includes bibliographical references (p. 238-245).
68

Community collaboration and restriction of use for the control of invasive threats in multipurpose reservoirs

Mulhearn, David Thomas. January 2007 (has links) (PDF)
These (Ph.D.)--Walden University, 2007. / Title from PDF title page. Available through UMI ProQuest Digital Dissertations. Includes bibliographical references (leaves 139-151). Also issued in print.
69

Zoning for shoreland resource protection uses and limitations /

Kusler, Jon A. January 1900 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1970. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
70

The choices of irrigation technologies and groundwater conservation in the Kansas High Plains a dynamic analysis /

Ding, Ya, January 2005 (has links)
Thesis (Ph. D.)--Kansas State University, 2005. / Includes bibliographical references (leaves 97-100).

Page generated in 0.2166 seconds