177,989 research outputs found
Electricity Distribution Networks: Investment and Regulation, and Uncertain Demand
No full textElectricity distribution networks are capital intensive systems and timely investments are crucial for long-term reliability of their service. In coming years, in the UK, and elsewhere in Europe, many networks are in need of extensive investments in their aging assets. Also, aspects of energy policy concerning climate change, renewable energy, energy
efficiency, demand side management (DSM), network energy loss reduction, quality of service standards, and security of supply require active, flexible, and smart networks that can be achieved through investments. This paper is a chapter in the forthcoming book "Jamasb T. and Pollitt, M. G. (2011) Eds., The Future of Electricity Demand: Customers, Citizens and
Loads, Cambridge University Press: Cambridge" and describes a network investment assessment model developed as a tool to identify and assess the investment requirements of distribution networks. A broadening of the scope of network investments to include demand-related measures that can reduce the need for investments
Explaining contextual influences on the dynamics of public management reforms: reflections on some ways forward
No full textAs summed up by Christopher Pollitt in a co-authored paper based on a wide analysis of both academic and grey literature on the impact of (new public management [NPM]-type) public management reforms in Europe, the development of scholarly knowledge about the understanding of contextual influences on the dynamics of public management reforms has led to the recognition that certain ‘factors’, properly positioned along time and scale dimensions, exert an influence in a certain direction (facilitate vs. prevent) on certain contents of public management reform (Pollitt and Dan, 2011, pp. 35–47). This state of the art leaves the question ‘how can we then move forward and better qualify causal patterns?’ yet to be fully addressed, as it does for related questions such as ‘how can we bridge the stream of research on public management reform trajectories in different countries2 (which is by definition at a ‘macro’ level of analysis3) with strands of research in public management which aim at comprehending causes and effects in public management by uncovering what happens at more ‘micro’ a level (for example, the stream of research on Public Service Motivation [PSM] – see Perry and Hondeghem, 2008 and Vandenabeele and Hondeghem, 2008 – focused on the motivational structure of individuals working for the public sector)?’
September 18, 1838
No full text40 cm X 31.7 cmThe Republic of Texas
County of Nacogdoches
Be it known that on this eighteenth day of September, one thousand eight hundred & thirty eight and of the Independence of Texas the Third, we Frost Thorn & George Pollitt of Nacogdoches, for and in consideration of the sum of four hundred dollars to us in hand paid by Missouri M. Fowler, late Missouri M. Porter, Widow & Administratrix of J. J. Porter, dec’d, the receipt whereof is hereby acknowledged have this day granted, bargained & sold unto said Missouri M. Porter or Missouri M. Fowler, Administratrix as aforesaid, the following tract of land, to wit, one thousand and twenty three acres to be taken out of the North West corner of a certain league of land granted to Corildo[?] Aguilere by Commissioner Nixon on the thirtieth day of April Eighteen hundred & thirty five. Said land situate in Burnett’s Colony & a more particular description of which will be found in said title. The said league having been conveyed to us by said Aguielere[?] To have & to hold the said land unto the said Missouri M. Fowler Administratrix as aforesaid, for the use, benefit & advantage of the heirs & legal representatives [p. 2] of said J. J. Porter deceased. We hereby [covenanting?] that we are the true & lawful owners of said land, & that we have full right to sell the same & that we will defend the title of said land to said Missouri M. Porter Administratrix as aforesaid, against the claims of all persons claiming under us but no further.
In Testimony of all which we have herewith set our hands & seals the day & year first above written.
F. Thorn {seal}
G. Pollitt {seal}
Signed, sealed & delivered in presence of us
A. Hotchkiss
C. M. Gould
Republic of Texas }
County of Nacogdoches }
Personally came before me Daniel Lacey clerk of the county court of said county, C. M. Gould, one of the above signed witnesses who acknowledged his signature as such and being duly sworn saith that he saw F. Thorn and G. Pollitt sign and seal the foregoing instrument. In testimony whereof I have hereunto set my hand this 22d day of September 1838.
Daniel Lacey
Clerk Co. Court
[p. 3]
Recorded in the office of the clerk of the county court of Nacogdoches County in Book #, Folio 230 &231
Daniel Lacey
Clerk Co. Court
[p. 4]
Thorn & Pollitt
Deed
M. M. Fowler
Admx of J. J. Porter
decd
Received for Record
September 1838
Daniel Lacey
Clerk Co. Court
N[acogdoches] C[ounty]
No. 17
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
Intern experience at CH���M Hill, Inc.: an internship report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc.
during the period September 1975 through May 1976 is presented. During this nine month
internship the author worked as an Engineer II in the Industrial Processes discipline of this
large consulting engineering firm... The author's prime responsibility was as one of three
lead design engineers on the design of a large wastewater treatment facility for a pulp mill
in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design
of individual treatment units and associated piping and pumping. The purpose of the project
was to provide wastewater treatment capabilities that would satisfy the effluent limitations
(standards) imposed upon the mill by the State of Washington Department of Ecology and the
U.S. Environmental Protection Agency. The author's assignment also entailed necessary
interaction with the project manager and other CH���M HILL design engineers and support staff
members, the client's representatives, and representatives of two other consulting engineering
firms working on the project. Thus, the internship position at CH���M HILL provided considerable
experience coordinating the author's work with the work of other engineers, guiding the design
and administrative efforts of a support staff, and interacting regularly with the client and
other consulting firms. This broad exposure to a variety of engineering and organizational
problems provided a valuable educational experience
Electricity Market Liberalisation and Integration in the European Union
No full textElektrizitätswirtschaft, Stromnetz, Reform, Deregulierung, Europäische Integration, EU-Staaten, Electric utility industry, Electricity grid, Reform, Deregulation, European integration, EU countries
Intern experience at the Texas Transportation Institute: an internship report
No full text"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirements for the degree of Doctor of Engineering."Includes vita (leaf 91)Includes bibliographical references (leaf 57)This report discusses the author's engineering experience at the Texas
Transportation Institute (TTI), Texas A&M University from March 1974 through July 1977. A
report of this experience plus twelve additional hours of academic course work were
substituted for an internship according to requirements established by the College of
Engineering. Although the author could not retroactively establish objectives of the type
associated with a typical internship, the work experience gained could be related to the two
general objectives of an intership: 1. To demonstrate an identifiable contribution to the
organization in which the intern served, and 2. To enable the intern to become aware of the
non-technical aspects of working as an engineer in a non-academic environment. While a member
of the Texas Transportation Institute staff, the author worked on a number of projects in the
areas of highway traffic engineering research and the preparation of continuing education
courses for transportation engineering officials. These assignments were contained within the
Urban Transportation Systems Division of TTI. This report delineates the author's contribution
to four particular projects and discusses the technical as well as non-technical experience
gained from each. Having been exposed to more engineering situations than many of the other
Doctor of Engineering students, the author has already formulated some rather specific
milestones for the future. The Doctor of Engineering program is discussed in conjunction with
its potential for helping the author attain these career goals and objectives. Also, some
thoughts are presented regarding the Doctor of Engineering as a viable alternative to the
Ph.D. in preparing for a career in engineering higher education
Policy assessments and good practices
No full texthe aim of this research project has been to identify good and bad practices affecting the electricity industry in the EU. Benchmarking is one way in which we can make comparisons across countries, and can contribute to that task. The European Commission has already begun this process, publishing four benchmarking reports over the past three year
The long-wavelength view of GG Tau A: rocks in the ring world
No full textWe present the first detection of GG Tau A at centimetre wavelengths, made with the Arcminute Microkelvin Imager Large Array at a frequency of 16 GHz (λ = 1.8 cm). The source is detected at >6 σrms with an integrated flux density of S16GHz = 249 ± 45 µJy. We use these new centimetre-wave data, in conjunction with additional measurements compiled from the literature, to investigate the long-wavelength tail of the dust emission from this unusual protoplanetary system. We use an MCMC-based method to determine maximum likelihood parameters for a simple parametric spectral model and consider the opacity and mass of the dust contributing to the microwave emission. We derive a dust mass of Md ~ 0.1 Msun, constrain the dimensions of the emitting region and find that the opacity index at λ > 7 mm is less than unity, implying a contribution to the dust population from grains exceeding ~4 cm in size. We suggest that this indicates coagulation within the GG Tau A system has proceeded to the point where dust grains have grown to the size of small rocks with dimensions of a few centimetres. Considering the relatively young age of the GG Tau association in combination with the low derived disc mass, we suggest that this system may provide a useful test case for rapid core accretion planet formation models
Technologies for a low-carbon electricity system: An assessment of the UK's technological issues and options
No full text- …
