127 research outputs found
Analysis and Evaluation of an Area Annexation Study for Redfield, South Dakota
No full textA major portion of both commercial and residential growth in the Redfield, South Dakota, area was occurring outside the existing city limits of that community in the late 1970\u27s. This pattern was becoming a concern to the Redfield City Council and prompted the city council to contact the Geography Department of South Dakota State University, Brookings, South Dakota, in 1978 to complete a study of annexation for Redfield. The author of this thesis was hired as a research assistant to complete the Redfield annexation study for the Geography Department. The city council needed to evaluate the annexation potential and problems before advancing into the actual annexation process. The study would serve as the basis of information required before annexation without petition could be allowed. The requirement for an annexation study was set forth in South Dakota Codified Law which reads in part, before a municipality may extend its boundaries to include contiguous territory, the governing body shall conduct a study to determine the need for the contiguous territory and to identify the resources necessary to extend the municipal boundaries. A letter written by Duane Sanger, Mayor of Redfield South Dakota, on behalf of the City Council requested information or advice on the following points: (1) The orderly development of the City within reasonable boundaries (2) The real estate tax impact on the City ( 3) The cost, if any, of extending City Services to the annexed areas (4) The feasibility of annexation of the State Institution located in Spink County, contiguous to the City (5) The impact of Federal and/or State with an increase in municipal population from 3,000 to 4,000 (6) The benefits, if any, the annexed areas will receive from the City (7) Other data which the City planners may use to continue the orderly development of the City\u27s growth. In the process of gathering information for the final annexation report, it became obvious to the researcher that conflicts were bound to occur. The researcher anticipated certain actions by the city council no matter what the annexation study reported. Therefore, the author attempted to present the information requested in an unbiased manner leaving the actual decision to the city council. The author felt this thesis would not be complete by presenting only the annexation study information as presented to the Redfield City Council on November 5, 1979. A look at the council\u27s decision on annexation and the resulting conflicts were an essential part of understanding the situation. The information presented in the annexation study, the actions of the city council, and the community controversy that resulted all needed to be evaluated to understand the annexation problem
Carbon, nitrogen and phosphorus stoichiometry of rivers in the light of Redfield ratio
No full textAbstract. A. Redfield entered the history of hydroecology due to the discovery of a unique stoichiometric ratio of Carbon, Nitrogen and Phosphorus – 106: 16: 1 – in the marine plankton, which it was later named after the author – the Redfield Ratio. Furthermore, A. Redfield established, that the stoichiometric ratio of Carbon, Nitrogen and Phosphorus in seawater is supported on the average level and it is 1017 : 15 : 1. On the basis of established stoichiometric ratios A. Redfield came to the conclusion that exactly Nitrogen is a limiting factor in the marine environment, because the ratio of its average statistical stoichiometric availability in seawater turned out lower than the average stoichiometric utilization of plankton. Also the merit of A. Redfield is the was established by him the carbon and nitrogen forms, which make the greatest contribution to the pool of these elements are available for plankton. After Redfield the studies by the CNP-stoichiometry of water and plankton in marine and ocean ecosystems were carried out by a number of researchers. However, the CNP-stoichiometry of rivers water fell out of the field of view of hydroecologists. The authors of this publication tried to fill this gap. The purpose of the studies was to establish the peculiarities of CNP-stoichiometry of river ecosystems in comparison with marine ecosystems and it determine the contribution of different forms of carbon and nitrogen to the pool of these elements which available for plankton in river water. The research was conducted during the summer low water period (2014) at the at monitoring stations of watershed of the three rivers of the Carpathian region within the Chernivtsi region. It is Dniester, Prut and Siret. Water samples were taken by a bathometer at 16 sites (near 8 forest and 8 meadow floodplains) of each of the 15 monitoring stations. Under laboratory conditions, the nitrate content was determined by the nitrate meter (H-401). Carbonates and hydrogen carbonates was determined by titrimetrically method. Phosphates, ammonia and nitrites was determined by photocolorimetrically method. Like Redfield, the stoichiometric availability of Сarbon and Nitrogen in river water was estimated as the ratio of the molar concentrations of the corresponding elements to the molar Phosphorus concentration. For the first time the features of CNP stoichiometry of the rivers were installed in comparison with the marine stoichiometry. The stoichiometric ratio of total carbon, nitrogen and phosphorus in river water of the Carpathian region is 938C: 59N: 1P and the ratios of their stoichiometric availability to stoichiometric utilization by plankton is 8,9C : 3,7N : 1P. It was shown that stoichiometric availability of energetically favorable for the assimilation by plankton by forms of carbon and nitrogen – СО2 и NH4+ – in the rivers water is greatly reduced, and do not cover the necessary level of stoichiometric utilization of these elements by plankton. It is proved that the greatest contribution in the river water to the pool of stoichiometric available of carbon and nitrogen contributes HCO3-, а азота – NО3- in accordance. It was found that the main limiting factor of growth of and development of plankton in rivers of the Carpathian region appears phosphorus whose balanced share in CNP ratio is an order of magnitude lower than that it need for the utilization by plankton.</jats:p
Electronic Dance Music Events as Modern-Day Ritual
No full textElectronic dance music (EDM) events may function as a ritual space for psycho-spiritual exploration and personal development, often linked to the occurrence of non-ordinary states of consciousness in participants. This paper reviews the literature addressing the spiritual, religious, and transpersonal facets of participants’ experiences at EDM events, with an emphasis on the subsequent integration of these experiences into daily life. Several empirical studies conducted in the past two decades, of which the most recent was conducted by the first author of the present paper (Redfield, 2017, this issue), provides grounds to argue that EDM events can be vectors for enhancing personal and psychosocial wellbeing for their participants—a discussion that was omitted in previous studies that strictly emphasized either the dangers or the purely hedonistic nature of EDM participation. The paper concludes with suggestions for further research into the specific ways in which EDM events may benefit individual participants
Synergy and Group Size in Microbial Cooperation
No full textMicrobes produce many molecules that are important for their growth and development, and the exploitation of these secretions by nonproducers has recently become an important paradigm in microbial social evolution. Although the production of these public-goods molecules has been studied intensely, little is known of how the benefits accrued and the costs incurred depend on the quantity of public-goods molecules produced. We focus here on the relationship between the shape of the benefit curve and cellular density, using a model assuming three types of benefit functions: diminishing, accelerating, and sigmoidal (accelerating and then diminishing). We classify the latter two as being synergistic and argue that sigmoidal curves are common in microbial systems. Synergistic benefit curves interact with group sizes to give very different expected evolutionary dynamics. In particular, we show that whether and to what extent microbes evolve to produce public goods depends strongly on group size. We show that synergy can create an "evolutionary trap" that can stymie the establishment and maintenance of cooperation. By allowing density-dependent regulation of production (quorum sensing), we show how this trap may be avoided. We discuss the implications of our results on experimental design.</p
Technical assistance report no. TA-77-70: Redfield Company: Denver, Colorado
No full textEnvironmental and personal air samples were analyzed for the presence of free silica (7631869) at the Redfield Company (SIC-3832) in Denver, Colorado on September 26 and 27, 1977. The survey was requested by the employer on behalf of about 320 employees. Air samples were analyzed for total nuisance particles, respirable particles, and silica. No exposures exceeded the OSHA criteria of 5 milligrams per cubic meter for respirable or total nuisance particles, and no free silica was detected. High volume air samples detected silica as 23 percent of total dust and 16 percent of respirable dust, which exceed the OSHA criteria. The author concludes that a potential hazard exists from silica exposure and recommends that a medical and environmental monitoring program be established, the working environment be evaluated every 6 months, and a respirator use and care program be developed. Improved ventilation, housekeeping procedures, and worker protection practices also are recommended
Towards a robot task ontology standard
No full textOntologies serve robotics in many ways, particularly in de-
scribing and driving autonomous functions. These functions are
built around robot tasks. In this paper, we introduce the IEEE
Robot Task Representation Study Group, including its work plan,
initial development efforts, and proposed use cases. This effort
aims to develop a standard that provides a comprehensive on-
tology encompassing robot task structures and reasoning across
robotic domains, addressing both the relationships between tasks
and platforms and the relationships between tasks and users. Its
goal is to develop a knowledge representation that addresses task
structure, with decomposition into subclasses, categories, and/or
relations. It includes attributes, both common across tasks and
specific to particular tasks and task types
Curriculum realignment for an entry-level music appreciation course as part of the degree requirements for an Associate of Arts degree at a vocational college
No full textThe purpose of this project is to evaluate and restructure an entry-level music history course offered in accordance with the degree requirements for an Associate of Arts degree at a vocational college. This new curriculum will provide students with a comprehensive look at music history as well as fulfilling the requirements set forth by the college. This curriculum will also satisfy a portion of the humanities requirement for the Associate of Arts degree. Finally, this class provide students with a competitive education should they decide to further their education by attending a four-year university. Prior to the realignment process the author must first take into consideration the existing course materials provided by the college such as the course plan, assignment suggestions, course objectives and benchmarks. The author should also compare the course curriculum to other Music Appreciation courses, focusing on those courses offered at other vocational colleges and two-year colleges. Also important to consider are national and state education standards. Once it is understood what is and should be required of any student taking the course, the author can then begin to amend the course around this basic skeletal structure. Using current pedagogical ideas, multimedia resources, Internet resources and available course materials the curriculum can be restructured in a way more fitting to the students of the college. The successful reevaluation and restructuring of this curriculum will require evaluation of the existing course materials, current musical education practices and pedagogical ideas, literature, various multimedia course material, Internet based material, and other technological resources. Delimitations Although this project has universal applications, the course materials that will be, developed, and restructured, the author created them specifically for use in an accelerated program at a vocational college in Stockton, California
His Kingdom is Forever
No full textThis image shows members of the Sub-Committee on Films of the General Anniversary Committee. They were reviewing the script for a Centennial filmstrip titled "His Kingdom is Forever." Included are script writer Margaret Redfield (from Hollywood), Bruce Sifford, and the Rev. Dr. Martin B. Carlson. Redfield was the author of numerous religious motion pictures and filmstrips
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