Selected experiments in laminar flow: An annotated bibliography

Since the 1930s, there have been attempts to reduce drag on airplanes by delaying laminar to turbulent boundary layer transition. Experiments conducted during the 1940's, while successful in delaying transition, were discouraging because of the careful surface preparation necessary to meet roughness and waviness requirements. The resulting lull in research lasted nearly 30 years. By the late 1970s, airframe construction techniques had advanced sufficiently that the high surface quality required for natural laminar flow (NLF) and laminar flow control (LFC) appeared possible on production aircraft. As a result, NLF and LFC research became widespread. This report is an overview of that research. The experiments summarized herein were selected for their applicability to small transonic aircraft. Both flight and wind tunnel tests are included. The description of each experiment is followed by corresponding references. Part One summarizes NLF experiments; Part Two deals with LFC and hybrid laminar flow control (HLFC) experiments

Addicts of nostalgia

In this thesis, I will reflect on issues of nostalgia through a series of work based upon the landscape where I grew up. I discuss how my paintings stage themes and negotiate criticality towards memory. The writing analyses my engagement towards the collaging of documentary and fictional sources: and how my paintings seek to dispel legibility and embrace slippage. Alongside discussions of personal experiences, I talk about the relationship of distancing in my practice, concerning tangible and geographic detachment. The thesis expresses my adoration for the history of British painting, and my efforts to internalize its traditions. Moreover, this investigation highlights my moral obligations regarding recollection

A Children\u27s Realm: An Experiment Using Life-Sized Manipulatives to Expand Exploring and Learning Opportunities for Children

In this synthesis I describe a Children\u27s Realm in which middle school children can safely explore and interact with a variety of physical phenomena typically reserved for the adult world, such as building and driving a car. A Children\u27s Realm is an experiment. It is an attempt to not only design, but engineer a unique environment for middle school students to explore and learn. It is based on providing the complex tools I feel children need to do this kind of learning on their own. These complex tools I call Life-Sized Manipulatives or simply LSM. I highlight the importance of LSM in a Children\u27s Realm and how the goals of the Children\u27s Realm depend on them. This paper is a work in progress that represents observations that began when I was a child trying to learn but failing to learn. It continues through a process of learning from failing to teach, and collaborating with the faculty and colleagues of the Critical and Creative Thinking Program at University of Massachusetts-Boston. I show that my ideas are well conceived by connecting them to the works of others before me. To do this I make connections between the Children\u27s Realm and Adventure Playgrounds, The works of John Dewey, research done in peer to peer relationships, and highlight some of the key features of problem-solving pedagogies. I make these connections as powerfully as I can in order to convince others and hopefully secure funding to continue collaborating with others and further this research

Book Reviews

Frost: A Treatise on Guaranty Insurance and compensated Suretyship including therein as subsidiary branches, The Law of Fidelity, Commercial and Judicial Insurance, &c.; Freeman: The American Reports. Containing the Cases of General Value and Authority. Decided int eh Courts of Last Resort of the Several States.;Green: Digest of the Decisions of the Courts of last resort of the several states from 1904 to 1909 contained in the American State Reports, vols. 97 to 120 inclusive, and of the notes to cases reported therein.; the Earl of Halsbury et al.: The Laws of England, Being a Complete Statement of the Whole Law of England; Huddy: the Law of Automobiles (2nd ed.); Gilmore: Cases on the Law of Partnership. Including limited partnerships, Selected form Decisions of English and American Courts; Mechem: Cases on Damages. Selected from Decisions of English and American Courts

Hysteresis and competition between disorder and crystallization in sheared and vibrated granular flow

Experiments on spherical particles in a 3D Couette cell vibrated from below and sheared from above show a hysteretic freezing/melting transition. Under sufficient vibration a crystallized state is observed, which can be melted by sufficient shear. The critical line for this transition coincides with equal kinetic energies for vibration and shear. The force distribution is double-peaked in the crystalline state and single-peaked with an approximately exponential tail in the disordered state. A linear relation between pressure and volume ($dP/dV > 0$) exists for a continuum of partially and/or intermittently melted states over a range of parameters

Investigation of Field and Laboratory Methods for Evaluating Subgrade Support in the Design of Highway Flexible Pavements

Four different methods of evaluating subgrade support under flexible pavements were studied: (1) Field CBR; (2) North Dakota Cone; (3) Bearing Plates; and (4) Laboratory CBR. Approximately 435 miles of flexible pavements in Kentucky were represented. The roads were selected so as to give a wide range in conditions of traffic, soil areas, and design. A total of 185 locations were investigated, and 338 cone tests, 291 field CBR\u27s, and 117 series of plate tests were conducted. There were 178 subgrade samples for which the laboratory CBR test was conducted. Undisturbed samples for future triaxial tests were obtained at 21 locations. Subgrade moisture variation was considered. Traffic was determined by loadometer surveys and use of traffic flow maps. For the traffic imposed, adequacy of the designs -- as indicated by the presence or absence of base failures was evaluated from the standpoint of subgrade support measured by the four methods of test. Comparisons among the various methods of test in determining the subgrade support were made. The ultimate objective is a design criteria for flexible pavements in Kentucky