266,860 research outputs found
Elastic recovery effect on vickers microhardness of hard coatings
No full textABSTRACT
It has been commonly assumed that there is no elastic recovery in the Vickers indent diagonal on unloading and Vickers microhardness is load independent. Vickers microhardness measurements on hard coatings on WC-Co substrates were studied as a function of indentation load. The results of this research show that the conventional Vickers hardness increases with decreasing load. It further follows that the large increase in microhardness at light loads (up to 100 g) depends inversely on the elastic modulus of the hard coating. Microhardness numbers based on Vickers diagonal measurements are shown to have varying sensivity to the elastic recovery effect. Depending on the coating thickness, the microhardness load profiles can indicate the existence of gradient residual stresses in the coating as well as effects due to the coating-substrate interface and the substrate hardness
Vickers-Northrop Delta I
No full text1/4 left side view of a Vickers-Northrop Delta I, a military aircraft, on the ground.https://corescholar.libraries.wright.edu/special_ms223_photographs/2512/thumbnail.jp
Sheaves of nonlinear generalized functions and manifold-valued distributions
No full textThis paper is part of an ongoing program to develop a theory of generalized differential geometry. We consider the space G[X,Y] of Colombeau generalized functions defined on a manifold X and taking values in a manifold Y. This space is essential in order to study concepts such as flows of generalized vector fields or geodesics of generalized metrics. We introduce an embedding of the space of continuous mappings C(X,Y) into G[X,Y] and study the sheaf properties of
G[X,Y]. Similar results are obtained for spaces of generalized vector bundle homomorphisms. Based on these constructions we propose the definition of a space D'[X,Y] of distributions on X taking values in Y. D'[X,Y] is realized as a quotient of a certain subspace of G[X,Y
A global theory of algebras of generalized functions II: tensor distributions
No full textWe extend the construction of [19] by introducing spaces of generalized tensor fields on smooth manifolds that possess optimal embedding and consistency properties with spaces of tensor distributions in the sense of L. Schwartz. We thereby obtain a universal algebra of generalized tensor fields canonically containing the space of distributional tensor fields. The canonical embedding of distributional tensor fields also commutes with the Lie derivative. This construction provides the basis for applications of algebras of generalized functions in nonlinear distributional geometry and, in particular, to the study of spacetimes of low differentiability in general relativity
Reducing DCO registrations through electronic matching of cancer registry data and routine hospital data
No full textFrom twelve months after its original publication, this work is licensed under the Creative Commons Attribution-NonCommercial-Share Alike 3.0 Unported License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0
Inflation targeting in practice: the UK experience
No full textIn this speech (given at the CFSresearch conference on the Implementation of Price Stability held at the Bundesbank Frankfurt am Main, 10. - 12. Sept 1998), John Vickers discusses theoretical and practical issues relating to inflation targeting as used in the United Kingdom doing the past six years. After outlining the role of the Bank s Monetary Policy Committee, he considers the Committee s task from a theoretical perspective, beforediscussing the concept and measurement of domestically generated inflation
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Service handbook of the 9.2-inch Howitzer materiel model of 1917 (vickers mark I) and 9.2-inch Howitzer materiel model of 1918 (vickers mark II).
No full textCONTENTS
List of illustrations VII
General description of the 9.2-inch howitzer materiel (Vickers) 1
9.2-inch howitzer, Model 1917 (Vickers) Mark I 5
Howitzer body 5
Breech mechanism 6
Breech closing mechanism 6
Firing mechanism 8
T-Tube type 8
French type (percussion primer) 8
Obturation 12
Nomenclature list 13
9.2-inch howitzer, model 1917 (Vickers) Mark II 16
Howitzer body 16
Breech mechanism 17
Breech closing mechanism 17
Firing mechanism 19
French type firing mechanism (percussion primer) 20
Obturation 21
Nomenclature list 24
9.2-inch howitzers and carriages, Marks I and II (Vickers) 26
Weights and principal dimensions 27
Weights, dimensions, and ballistics 31
Description of the carriage 32
Bed.
Carriage body.
Cradle.
Hydraulic buffer.
Instructions for filling the buffer.
Recoil control gear for model of 1917 (Vickers Mark I).
Recoil control gear for model of 1918 (Vickers Mark II).
Recuperation.
Instructions for charging the recuperator.
Elevating gear.
Traversing gear.
Traversing indicator.
Loading gear.
Nomenclature of parts.
Tools and accessories 98
Firing beams.
Earth box.
Air pump.
Obturator press.
Projectile bearer.
Projectile tray.
Porter bar.
Rammer and sponge.
Ground ramps.
Picket driver.
Recuperator traveling lock.
Cradle traveling lock.
9.2-inch howitzer transport wagon (Vickers) 105
Weights and dimensions.
Nomenclature of parts.
9.2-inch howitzer carriage transport wagon (Vickers) 129
Weights and dimensions.
Nomenclature of parts.
9.2-inch howitzer platform transport wagon (Vickers) 136
Weights and dimensions.
Nomenclature of parts.
Instructions for operation, care and preservation of the howitzer 142
9.2-inch howitzer, Mark I 142
To dismantle breech mechanism 142
To assemble breech mechanism 142
Care and preservation of howitzer and fittings 142
List of lubricators in breech mechanism 142
9.2-inch howitzer, Mark II 144
To remove breech fittings 144
To assemble breech fittings 145
Care and preservation of howitzer and fittings 145
List of lubricators in breech mechanism 145
Notes 145
Miscellaneous stores 145
Instructions for the care, maintenance, and inspection of the recoil mechanism. 150 Recuperator mechanism.
Instructions for care, maintenance, and inspection of the carriage 153
Cradle.
Elevating gear.
Traversing gear.
Cleaning and lubricating.
List of lubricating holes.
Care and preservation of special accessories.
Air pump and driving gear.
Care and preservation of howitzer, carriage, and platform transport wagons 156
Rocking bar sight, Mark I.
General description 159
Detailed description 163
Gear casing.
Sight quadrant.
Deflection mechanism.
Automatic drift correction gear.
Cross leveling mechanism.
Sight carrying tube.
Range dial operating mechanism.
Range dial.
Range dial index.
Sight operating gear.
Identification list for Mark I 169
Rocking bar sight, Mark II 177
Identification list for Mark II 180
Test and adjustment of sighting materiel for 9.2-inch howitzer carriages, Marks I and II 185
To test the range graduation dial.
To test the transverse level of the rocking bar sight.
To test the longitudinal level.
Verification of parallelism of lines of sight and axis of bore 185
Adjustments 186
Additional tests 188
Care and preservation of sight equipment 189
Instructions for assembling the carriage and mounting the howitzer 191
Assembling beams.
Assembling bed.
Assembling the carriage body.
Assembling the howitzer in cradle.
Instructions for changing from firing to traveling position.
General information 19
DESA1002 'Nine Quarter City' - <Alicia Vickers>
No full textOver the course of the semester I developed my original idea of a school or cafe/ restaurant in New York City to that of a church and surrounding public place. My initial idea for creating this public space and church was inspired by my research of New York, having never been there I had to look at images i.e. from Google earth and read about the city. I imagined it to be extremely dense, with buildings packed close together and very overwhelming. With this comes anonymity and congestion, It was my aim through my project to create a quiet and peaceful corner of the city by the lake where local office workers could congregate to help reduce the anonymity on the streets of New York. By creating a spacious and relaxing corner of the city it would be seen as luxurious in the city of New York. I also focused my design on the idea of scale - I did not want to create an immense church so I developed my idea of a church with a central element of my design, a tower which would be in scale with the rest of New York. As a public tower, people would visit and mount the tower and be able to view the city form all different angles with a glass bottomed floor. This would be an escape from the city, whilst taking in its breathtaking views. My church design is definitely a modern interpretation of a Catholic Church by placing the church tower in front of the church; it still remains connected to the main church through the two entrances which are opposite each other. My design also explores organic shapes by using half domes and a curved wall around the ambulatory to contrast from the sharp, angular shapes of the surrounding skyscrapers. Organic shapes are more soothing for the eye, as well as this by using curves it creates more space and light within the building itself which can be interpreted from my design. Overall, this summary identifies the key ideas I developed throughout the semester and I feel I explored them convincingly through my model and presentation
- …
