An early Anglo-Saxon cemetery at Quarrington, near Sleaford, Lincolnshire : report on excavations, 2000-2001

[FIRST PARAGRAPH] The early Anglo-Saxon cemeteries in the Kesteven part of Lincolnshire form two distinct distribution patterns (Fig.1): a north-south line along, or just to the west of, the limestone edge between the former Roman towns of Lincoln and Ancaster, of which the best known is an outlier near its southern tip, the large mixed-rite site at Loveden Hill; and a cluster in the south-east, of which the best known are Ruskington and Sleaford, essentially inhumation cemeteries but with a handful of cremations each (Leahy 1993; 1999). This paper reports on the excavation of a small inhumation burial site just 2.5km west-south-west of the Sleaford cemetery and now in the civil parish of Sleaford, but formerly in the parish of Quarrington (Fig.2). An Anglo-Saxon burial site has been known from near here since the early nineteenth century, when urned cremations and accompanying inhumations were discovered during gravel digging (Yerburgh 1825; Trollope 1872, pp.98-100; Meaney 1964, pp.160-61; Lincolnshire Historic Environment Record, no.60375). Recently, an Anglo-Saxon settlement of the sixth to eighth centuries has been excavated at Town Road, Quarrington, 1.1km to the east (Taylor 2003). The interrelationship of these three Anglo-Saxon sites is a matter for discussion (below), but it is proposed that the nineteenthcentury discoveries now be known as Quarrington I and the new burial area as Quarrington II

Industrial product design by using two-dimensional material in the context of origamic structure and integrity

Thesis (Master)--Izmir Institute of Technology, Izmir, 2004Includes bibliographical references (leaves: 115)Text in English; Abstract: Turkish and English.xiii, 118 leavesThroughout the history of industrial product design, there have always been attempts to shape everyday objects from a single piece of semi-finished industrial materials such as plywood, sheet metal, plastic sheet and paper-based sheet. One of the ways to form these two-dimensional materials into three-dimensional products is bending following cutting. Similar concepts of this spatial transformation are encountered in the origami form, which has a planar surface in unfolded state, then transforms to a three-dimensional state by folding or by folding following cutting. If so, conceptually it may be useful to think of one-axis bending, which is a manufacturing technique, is somewhat similar to folding paper.In this regard, the studies in the scope of computational origami, which light the way for real-world problems such as how sheets of material will behave under stress, have applications especially in .manufacturing phase. of industrial product design.Besides manufacturing phase, origami design is also used as a product design tool either in .concept creating phase. (in the context of its concepts) or in 'form creating phase' (in the context of its design principles).In this thesis, the designing of industrial products, which are made from sheet material, is presented in a framework that considers the origami design. In the theoretical framework, evolutionary progression of origami design is discussed briefly in order to comprehend the situation of origami design in distinct application fields.Moreover, the elements, principles, basics of origami design and origamic structures are generally introduced. The theoretical framework is completed with the descriptions of the concepts on origami design and origamic structures. In the practical framework, typical applications that have origamic structures in distinct industrial product fields are exemplified. Furthermore, sheet materials and their bending process are taken up separately. By means of its excessive advantages, sheet metal bending is particularly emphasized. The practical framework is completed with several case studies base on sheet metal bending. Finally, the study is concluded with the evaluation of the origamic-structured product in respect of good design principles. Furthermore, designing by considering origami design is recommended to designer to design a good industrial product

A series of sculptures based on a creative investigation of the imagery and formal qualities inherent in selected mechanical structures

Includes bibliographical references.In order to meet the requirements for the MFA degree at the University of Cape Town I proposed to create a body of sculptures based on studies initiated during my year of study for the Advanced Diploma in Art at the Michaelis School of Fine Art. These studies involved the observation and formal analysis of certain functional structures relating mostly to industry, and led to the making of sculptures characterised by formal reduction and abstracted 'constructivist' forms. My intention for the MFA study was to pursue this methodology and to extend the scope to include architectonic elements relating to both interior and exterior structures and spaces, as well as other objects such as machines. My source material was largely taken from 19th-century technical illustrations of industrial machinery for the reason that the functions of the chosen mechanical structures were overtly expressed by the constituent parts, which became the compositional elements of my sculptural abstractions

Diamond semiconductor technology for RF device applications

This paper presents a comprehensive review of diamond electronics from the RF perspective. Our aim was to find and present the potential, limitations and current status of diamond semiconductor devices as well as to investigate its suitability for RF device applications. While doing this, we briefly analysed the physics and chemistry of CVD diamond process for a better understanding of the reasons for the technological challenges of diamond material. This leads to Figure of Merit definitions which forms the basis for a technology choice in an RF device/system (such as transceiver or receiver) structure. Based on our literature survey, we concluded that, despite the technological challenges and few mentioned examples, diamond can seriously be considered as a base material for RF electronics, especially RF power circuits, where the important parameters are high speed, high power density, efficient thermal management and low signal loss in high power/frequencies. Simulation and experimental results are highly regarded for the surface acoustic wave (SAW) and field emission (FE) devices which already occupies space in the RF market and are likely to replace their conventional counterparts. Field effect transistors (FETs) are the most promising active devices and extremely high power densities are extracted (up to 30 W/mm). By the surface channel FET approach 81 GHz operation is developed. Bipolar devices are also promising if the deep doping problem can be solved for operation at room temperature. Pressure, thermal, chemical and acceleration sensors have already been demonstrated using micromachining/MEMS approach, but need more experimental results to better exploit thermal, physical/chemical and electronic properties of diamond

Index to 1981 NASA Tech Briefs, volume 6, numbers 1-4

Short announcements of new technology derived from the R&D activities of NASA are presented. These briefs emphasize information considered likely to be transferrable across industrial, regional, or disciplinary lines and are issued to encourage commercial application. This index for 1981 Tech Briefs contains abstracts and four indexes: subject, personal author, originating center, and Tech Brief Number. The following areas are covered: electronic components and circuits, electronic systems, physical sciences, materials, life sciences, mechanics, machinery, fabrication technology, and mathematics and information sciences

An Efficient and Safe Cooking Stove for Las Delicias, El Salvador

The primary objective of this project was to design an efficient and safe cooking stove based on the resources available in El Salvador while ensuring it could be inexpensive to produce. The stove is a cuboid, 18 ×18 ×12 in dimension, and weighs 75 lbs. It has a top cover to cook on, and a unique three-chamber design: a chamber for combustion, a chamber to pump hot air into the combustion chamber with a bellows, and a third chamber to add insulation material. A ventilation tube connects the inner chamber with the exterior to safely vent flue gas to the outside. The stove is made out of stainless steel, and uses sand as an insulator. The product’s overall energy efficiency was calculated to be about 33%, and it requires approximately 19-20 minutes to boil 5 liters of water assuming a pot diameter of 14”. The estimated manufacturing cost of producing the first 200 stoves is $51.77 per unit, without including capital equipment costs. A unit can be priced at$65, which would give the manufacturer a 25% margin while maintaining competitiveness in the market against stoves such as Turbococina and Ecocina. The stove is estimated to cost a family $15 per month to operate, which corresponds to 50% in charcoal fuel savings compared to using an open flame. The stove can be manufactured using local labor and would take on average 6 to 7 hours to construct one unit

Design and synthesis of non-uniform high impedance surface-based wearable antennas

This thesis is concerned with the design and fabrication of flexible textile wearable antennas integrated with the newly introduced artificial materials known as high impedance surfaces (HIS). With the rapid growth and use of wireless communication systems more and more people are taking advantage of portable computing systems on daily basis. Also with the advancement in electronic industry new and sophisticated wireless devices have been introduced which are being used closed to human body. For user convenience there is an increasing need for integrating antennas on or in the clothing. The conventional antennas being rigid and obtrusive to user movements have limitations. There is a need of antennas made of flexible textile materials that can be part of user clothing defined as wearable antennas. Also with the miniaturisation trend in electronic industry, antenna designers are facing a challenge to come up with a compact, low profile,multi function efficient antenna designs occupying a small physical space. By integrating antennas in user clothing this limited space problem can also be resolved. With the easy availability of electro textile materials it is now possible to manufacture complete fabric antennas. The entire design cycle of wearable fabric antennas starting from material selection to prototype fabrication and antenna testing was carried out in this thesis. A novel technique for antenna fabrication using electro textile material is proposed that will have major implications on wearable computing industry. The use of HIS for antenna performance enhancement is growing at a rapid pace. In this thesis a modified wearable form of HIS defined as non uniform HIS is presented and successfully integrated with antenna for improved performance under low profile limitation. The HIS was also integrated with normal patch antenna to reduce its size and improve its gain and impedance bandwidth. These wearable antennas were then tested under real operating conditions. The measured results validated the design idea and showed that there are many possibilities for these unique artificial materials to be exploited for future wearable on body communication antennas