Digital Commons Network^™

Guidelines And Standard Operating Procedures For Stormwater Phase Ii Communities In Maine: Volume 1, Information For Program Managers, Kristie Rabasca, Allysen Loftsgaarden, Jeff Edelstein, Matt Craig, Brenda Zollitsch

Publications

No abstract provided.

Final Habitat Restoration Inventory Summary Report For The Lower Presumpscot River Watershed: Volume Ii Appendices, Northern Ecological Associates, Inc., Casco Bay Estuary Partnership

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No abstract provided.

Application Of A Linear Center Identification Scheme To Deterministic Polar Positioning, Laine Mears, Thomas R. Kurfess

Publications

In a number of manufacturing applications, parts of circular cross-section must be centered for optimal processing or measurement. However, part form is never perfect, making accurate determination of the “centered” state of a part difficult. Imperfect inputs to the manufacturing process such as rough-processed parts, deformation due to heat treatment, or raw formed materials present difficulty in centering by the traditional manual method. This paper presents a filtering and quantification technique for identifying the true center of an imperfect round part through isolation of the lowest polar frequency component. A low-cost device is presented that centers parts based on this …

Coming To Terms With Engineering Design As Content, Theodore Lewis

Publications

This article addresses the challenges posed by engineering design as a content area of technology education. What adjustments will technology teachers have to make in their approach to teaching and learning when they teach design as engineering in response to the new standards? How faithful to engineering as practiced must their approach be? There is already some advocacy in the literature that greater attention will need to be paid to mathematics and science, where these subjects underpin design. Cotton (2002) proposed that mathematical theories should be applied to design in technology education classrooms, and that students should be encouraged to …

Septic Systems: How They Work And How To Keep Them Working Factsheet, Frank O'Hara, Cumberland County Soil & Water Conservation District

Publications

A septic system is a sewage treatment and disposal system buried in the ground. It is composed of a septic tank and a leach field or trench. Septic systems can fail due to poor design or construction, to overloading or to inadequate maintenance.

Improperly functioning and overloaded septic systems are major sources of water pollution. Failing septic systems leak harmful pollutants, like bacteria and excess nutrients (nitrogen and phosphorus), into groundwater. From there, pollutants make their way into lakes, streams, rivers, and coastal waterbodies.

Many homeowners are under the misconception that a septic system, once installed, will work forever without …

Guidelines And Standard Operating Procedures For Stormwater Phase Ii Communities In Maine: Volume 2, Standard Operating Procedures And Forms, Kristie Rabasca, Allysen Loftsgaarden, Jeff Edelstein, Matt Craig, Brenda Zollitsch

Publications

No abstract provided.

Design Of A Flexible Centering Tooling System, Laine Mears

Publications

Precise machining of bearing rings is integral to the quality of assembled bearings. The output accuracy of center-based machining systems such as lathes or magnetic chuck grinders can relate directly to the accuracy of part centering before machining. Traditionally, such machines achieve centering by either hard tooling to which the ring is pressed, or through manual centering by a skilled operator using a brass hammer. Hard tooling has the problems of being subject to wear, dimensional inaccuracy, and additional setup time at part type changeover. Manual centering methods are subject to human error, both in accuracy and repeatability. Whether through …

President’S Message: Advancing The Tide Of Technology Education, Ethan B. Lipton

Publications

The article presents information relating to the field of technology education. Vigorous change continues in the study of technology and the delivery of technology education because of the integrating nature of technology and the need to prepare students for developing technological world to meet changing human needs. Significant strides have been made in the evolution of technology education of which we should all be very proud. In the last decade alone, the International Technology Education Association has provided the leadership for a wide range of initiatives designed to enhance technology education through technology, innovation, design, and engineering experiences at the …

National Center For Engineering And Technology Education, Christine Hailey, Thomas Erekson, Kurt Becker, Maurice Thomas

Publications

The article reports that the overall impact of the National Center for Engineering and Technology Education (NCETE) is to strengthen the nation's capacity to deliver effective engineering and technology education in the K-12 schools. Further, it informs that the National Science Foundation established the Centers for Learning and Teaching (CLT) program to address needs in the science, technology, engineering, and mathematics (STEM) workforce. The CLT program has three goals, based upon stated national needs. First, CLT are expected to renew and diversify the cadre of national leaders in STEM education. The CLT includes partners with strengths in engineering and in …

The Impact Of Non-Stationarities In The Climate System On The Definition Of "A Normal Wind Year": A Case Study From The Baltic, S C. Pryor, R J. Barthelmie, Justin T. Schoof

Publications

Wind speeds over the Baltic significantly increased over the second half of the 20th century (C20th), with the majority of the increase being focused on the upper quartile of the wind speed distribution and in the southwest of the region. These changes have potentially profound implications for the wind energy resource. For example, based on the National Centers for Environmental Prediction–National Center for Atmospheric Research (NCEP–NCAR) reanalysis data it is shown that, owing to this non-stationarity, using the normalization period of 1987–98 to determine the wind resource (as in the Danish wind index) leads to overestimation of the wind energy …

Arnold Schwarzenegger And Our Common Future, Sarah Krakoff

Publications

No abstract provided.

The Ghost Of Telecommunications Past, Philip J. Weiser

Publications

Paul Starr's The Creation of the Media presents modern policymakers with an important opportunity to consider the historical lessons of the telecommunications industry. This Book Review underscores how Starr's book richly explains some key components of U.S. information policy - such as relying on an integrated strategy of intellectual property, antitrust law, and telecommunications policy - and that some historical lessons are misplaced as to today's environment - such as a categorical skepticism of vertical integration. Moreover, Starr's account of telecommunications history explains that the U.S.'s success in promoting innovation in the information industries reflects our reluctance to manage key …

Onset Conditions For Equatorial Spread F Determined During Equis Ii, D. L. Hysell, M. F. Larsen, C. M. Swenson, Aroh Barjatya, T. F. Wheeler, M. F. Sarango, Et.Al

Publications

An investigation into the dynamics and layer structure of the postsunset ionosphere prior to the onset of equatorial spread F (ESF) took place during the NASA EQUIS II campaign on Kwajalein Atoll on August 7 and 15, 2004. On both nights, an instrumented rocket measured plasma number density and vector electric fields to an apogee of about 450 km. Two chemical release rockets were launched both nights to measure lower thermospheric wind profiles. The Altair UHF/VHF radar was used to monitor coherent and incoherent scatter. In both experiments, strong plasma shear flow was detected. Periodic, patchy bottom-type scattering layers were …

Transient Non-Linear Heat Conduction Solution By A Dual Reciprocity Boundary Element Method With An Effective Posteriori Error Estimator, Eduardo Divo, Alain J. Kassab

Publications

A Dual Reciprocity Boundary Element Method is formulated to solve non-linear heat conduction problems. The approach is based on using the Kirchhoff transform along with lagging of the effective non-linear thermal diffusivity. A posteriori error estimate is used to provide effective estimates of the temporal and spatial error. A numerical example is used to demonstrate the approach.

National Identity And Liberalism In International Law: Three Models, Justin Deystone

Publications

No abstract provided.

A New Framework: Post-Kyoto Energy And Environmental Security, Lakshman D. Guruswamy

Publications

In this article Professor Guruswamy advances an argument for new energy agreements that address the immense global environmental challenge presented by the increasing global energy demands of both the developed and developing world. Arguing that new energy accords are needed to meet this challenge, he identifies and describes the decidedly interdisciplinary knowledge base and analytics required to negotiate such international instruments. The construction of these knowledge bases call for scientific, engineering, technological, legal, social, economic and behavioral expertise. Professor Guruswamy identifies pragmatic steps--including a targeted research agenda--that will contribute to such an undertaking and begin the arduous process of addressing …

Sustainable Energy: A Preliminary Framework, Lakshman Guruswamy

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No abstract provided.

The Supreme Court, Rule 10b-5, And The Federalization Of Corporate Law, Mark J. Loewenstein

Publications

This Article examines Supreme Court jurisprudence since 1997 under the federal securities laws in light of the Court's earlier securities law decisions and in light of its recent decisions construing the Constitution and federal statutes as they relate to the regulation of business. These post-1977 cases strongly suggest that the much-heralded new federalism philosophy of the Supreme Court is not a factor in securities law cases or in business cases generally. Indeed, the opposite seems to be the case. In this context, new federalism cases appear to be an anomaly, with the reality being that the Court is still as …

Policing The Spectrum Commons, Philip J. Weiser, Dale N. Hatfield

Publications

One of the most contested questions in spectrum policy is whether bands of spectrum left as unlicensed will fall victim to the tragedy of the commons. Advocates of increased unlicensed spectrum often downplay what enforcement measures are necessary to minimize interference and to prevent the tragedy of the commons problem. Even imposing spectrum etiquette requirements in addition to the FCC's equipment certification program will fail to address this concern effectively, as the development of such measures - e.g., the requirement that devices listen before they talk - does not ensure that they will be followed. Indeed, if there are incentives …

Moody Investing And The Supreme Court: Rethinking The Materiality Of Information And The Reasonableness Of Investors, Peter H. Huang

Publications

This Article critically analyzes the judicial decisions and reasoning of the United States Supreme Court and lower courts accepting certain defenses in securities fraud litigation. This Article develops how and why the core notions of materiality of information and the reasonable investor should be revised in light of recent empirical data, experimental evidence, and theoretical models of moody investing. This Article proposes modifying three recent developments in materiality doctrine to take into account moody investing. In particular, this Article argues that current judicial treatment of puffery is flawed because it neglects the power of puffery to alter moods. This Article …

Energy, Environment & Sustainable Development, Lakshman D. Guruswamy

Publications

No abstract provided.

The Economic Situation, 2004 October, Bruce Yandle

Publications

Quarterly report on the economic situation of the United States and South Carolina.

Funding And Managing America's Transportation Systems, 2004 October, Clinton H. Whitehurst Jr.

Publications

No abstract provided.

Lorentz-Violating Electrostatics And Magnetostatics, Quentin G. Bailey, V. Alan Kostelecký

Publications

Electromagnetostatics experiments show promise for improving existing sensitivities to parity-odd coefficients for Lorentz violation in the photon sector.

Final Report: Review Of The Fits Program: Program Tasks, Goals And Pilot Training Initiatives, Alex Chaparro, Bonnie Lida Rogers, Christopher J. Hamblin

Publications

In 2002 the FAA, academic and industry partners established the FAA/Industry Training Standards (FITS) program whose purpose is to modernize General Aviation (GA) pilot training. The FAA recognized the need to modernize training standards for pilots who would use new avionics technology that integrate the GPS (Global Positioning Systems) with the autopilot along with multifunction displays capable of depicting flight path, weather, terrain and traffic information. These avionics and displays are touted as improving safety by enhancing pilot Situational Awareness and reducing pilot workload. The new technology has highlighted the need for programs to train and certify pilots to use …

Recognizing And Overcoming Difficult Site Conditions For Afforestation Of Bottomland Hardwoods, William Conner, J A. Stanturf, E S. Gardiner, C J. Schweitzer, A W. Ezell

Publications

In the last decade, about 370,000 acres (150,000 ha) of economically marginal
farmland in the Lower Mississippi Alluvial Valley (LMAV) have been restored to
bottomland hardwood forests (Stanturf and others 1998, King and Keeland 1999,
Schoenholtz and others 2001). Planting of this considerable acreage is due to several federal programs, such as the Wetlands Reserve Program (WRP), that assist landowners by financing afforestation (Figure 1). Unfortunately, these operational plantings have not performed as well as smaller plantings or research plots (Stanturf and others 2001a). For example, a recent survey of WRP plantings in westcentral Mississippi revealed that more than 90 …

The Coming North American Rail Mergers, 2004 July, Clinton H. Whitehurst Jr., Richard L. Clarke

Publications

No abstract provided.

Habitat Use By Middle Mississippi River Pallid Sturgeon, Keith L. Hurley, Robert J. Sheehan, Roy C. Heidinger, Paul S. Wills, Bob Clevenstine

Publications

Little is known about the habitat preferences and needs of pallid sturgeon Scaphirhynchus albus, which was federally listed as endangered in 1990. To learn more about habitat use and selection by pallid sturgeon, sonic transmitters were surgically implanted in 27 individuals from the middle Mississippi River. Study fish were located 184 times (1–23 times/individual) from November 1995 to December 1999. Of the seven macrohabitats identified, pallid sturgeon were found most often in main-channel habitats (39% of all relocations) and main-channel border habitats (26%); the between-wing-dam habitats were used less often (14%). Strauss’s linear selectivity index (L_i) …

An Integrated Analysis Of Pre-Hispanic Mortuary Practices: A Middle Sicán Case Study, Izumi Shimada, Ken-Ichi Shinoda, Julie Farnum, Robert Corruccini, Hirokatsu Watanabe

Publications

Recent debate has raised serious questions about the viability of the social and ideological reconstruction of prehistoric culture on the basis of mortuary analysis. In recent years bioarchaeology has gained considerable prominence, underscoring the fact that death, burials, and associated mortuary practices are multifaceted phenomena shaped by biological, social, ideological, and taphonomic factors. Few studies attempting social reconstruction through mortuary analysis, including those of a bioarchaeological character, have adequately addressed this multidimensionality. This study shows that social, ideological, and bioarchaeological reconstruction can be productively pursued through tight integration of a multitude of approaches and perspectives set within a long‐term regional …

The Economic Situation, 2004 May, Bruce Yandle

Publications

Quarterly report on the economic situation of the United States and South Carolina.