This book and the accompanying map is chiefly intended for the use of
lunar observers, but it is hoped it may be acceptable to many who, though
they cannot strictly be thus described, take a general interest in
The inner magnetosphere is an important region of space plasma because it is one of
the “kitchens” for space weather effects. The scientific understanding of this region
is important for predicting the interaction between space environmental conditions
and human activities.
The inner magnetospheric plasma is a unique composition of different plasma
particles and waves. It covers a huge plasma energy range with spatial and time
variations of many orders of magnitude.
In this volume I present some examples of Basic Concepts, Examination of Functions, Level Curves
and Level Surfaces and Description of Curves, cf. also Calculus 2b, Functions of Several Variables.
Since my aim also has been to demonstrate some solution strategy I have as far as possible structured
the examples according to the following form
A Awareness, i.e. a short description of what is the problem.
D Decision, i.e. a reflection over what should be done with the problem.
I Implementation, i.e. where all the calculations are made.
C Control, i.e. a test of the result.
A grammatical description often applies to a linguistic object only when that object has certain features. Such conditional descriptions can be indirectly modeled in Kay's Functional Unification Grammar (FUG) using functional descriptions that are embedded within disjunctive alternatives. An extension to FUG is proposed that allows for a direct representation of conditional descriptions. This extension has been used to model the input conditions on the systems of systemic grammar. Conditional descriptions are formally defined in terms of logical implication and negation.
This technical report describes the design of a RAND simulation model that has been adapted specifically to address general and flag officer (GFO) management subject to provisions of the Duncan Hunter National Defense Authorization Act for Fiscal Year 2009. The Act introduced the joint pool rubric, which provides for the
This paper presents a new formalization of a uniﬁcation- or join-preserving encoding of partially ordered sets that more essentially captures what it means for an encoding to preserve joins, generalizing the standard deﬁnition in AI research. It then shows that every statically typable ontology in the logic of typed feature structures can be encoded in a data structure of ﬁxed size without the need for resizing or additional union-ﬁnd operations.
Unification of disjunctive feature descriptions is important for efficient unification-based parsing. This paper presents constraint projection, a new method for unification of disjunctive feature structures represented by logical constraints. Constraint projection is a generalization of constraint unification, and is more efficient because constraint projection has a mechanism for abandoning information irrelevant to a goal specified by a list of variables. These works are based on graph unification rather than on term unification.
This paper deals with the automatic translation of route descriptions into graphic sketches. We discuss some general problems implied by such inter-mode transcription. We propose a model for an automatic text-to-image translator with a two-stage intermediate representation in which the linguistic representation of a route description precedes the creation of its conceptual representation.
This paper describes an algorithm for computing optimal structural descriptions for Optimality Theory grammars with context-free position structures. This algorithm extends Tesar's dynamic programming approach (Tesar, 1994) (Tesar, 1995@ to computing optimal structural descriptions from regular to context-free structures. The generalization to contextfree structures creates several complications, all of which are overcome without compromising the core dynamic programming approach.
The language of scene descriptions 2 must allow a hearer to build structures of schemas similar (to some level of detail) to those the speaker has built via perceptual processes. The understanding process in general requires a hearer to create and run "event ~ " to check the consistency and plausibility of a "picture" constructed from a speaker's description.
The f o r m a l i s m consists o f two parts: 1. A declarative description phrase-structures and t h e i r translation. of basic associated additional syntactic semantic grammar. PSGs have efficient algorithms for parsing . In a sense, all o f the work of transformations has been pushed off into a p r e - p r o c e s s i n g phase w h e r e new g r a m m a r rules are d e r i v e d .
A linguistically motivated approach to indexing, that is the provision of descriptive terms for texts of any kind, is presented and illustrated. The approach is designed to achieve good, i.e. accurate and flexible, indexing by identifying index term sources in the meaning representations built by a powerful general purpose analyser, and providing a range of text expressions constituting semantic and syntactic variants for each term concept.
This paper provides a method for generating compact and efficient code to implement the enforcement of a description in typed feature logic. It does so by viewing information about types through the course of code generation as modes of instantiation — a generalization of the common practice in logic programming of the hi nary instantiated/variable mode decl arations that advanced Prolog compilers use. Section 1 introduces the description language. Sections 2 and 3 motivate the view of mode and compilation taken here, and outline a mode declaration language for typed feature logic.
A rich vocabulary is both a great asset and a great joy. When you have an extensive vocabulary, you can provide precise, vivid descriptions; you can speak more ﬂuently and with more conﬁdence; you can understand more of what you read; and you...
Although this GRE Practice General Test is in the
paper-based format, it is a valuable practice exercise
for the computer-based General Test because
question types are the same for both formats.
The information on page 3 does not pertain to the
computer-based General Test. For a description of
the test and suggested test-taking strategies, see the
current GRE Bulletin or visit the GRE Web site at
Tài liệu tham khảo giáo trình nhôm trong thiết kế xây dựng - Chương 1 About aluminium
1.1 GENERAL DESCRIPTION
1.1.1 The element
Aluminium is a metallic element having the chemical symbol Al, with
atomic number 13 and atomic weight 27. The nucleus of the atom contains
13 protons and 14 neutrons (a total of 81 quarks). Aluminium is the
third most common element in the earth’s crust, coming after oxygen
and silicon. It makes up 8% of the crust’s total mass and is the most
Oilless Guide Elements General Description
Oilless Guide Elements with embedded solid lubricants are used in applications of linear or rotary motion in toolmaking, general machine construction and similar engineering uses. The structure of the base material provides closely spaced deposits of solid lubricant – properties and specifications as per table below. The elements satisfy highest demands in terms of load bearing capacity at low sliding speeds, within an extensive temperature band.
Bridge Design Practice in China
Historical Evolution • Bridge Design Techniques • Experimental Research of Dynamic and Seismic Loads • Wind Tunnel Test Techniques • Bridge Construction Techniques
General Description • Examples of Beam Bridges
General Description • Examples of Masonry Arch Bridge • Examples of Prestressed Concrete, Reinforced Concrete, and Arch Bridges
Tài liệu tham khảo giáo trình nhôm trong thiết kế xây dựng bằng tiếng anh - Chương 7
Plate elements in compression
7.1 GENERAL DESCRIPTION 7.1.1 Local buckling In aluminium design it is often economic to employ wide thin sections, so as to obtain optimum section properties for a minimum weight of metal. The extrusion process makes this possible. The limit to which a designer may thus go in spreading out the material depends on local buckling of the individual plate elements comprising the section.
Tài liệu tham khảo giáo trình nhôm trong thiết kế xây dựng - Chương 6
Heat-affected zone softening at welds
6.1 GENERAL DESCRIPTION An annoying feature in aluminium construction is the weakening of the metal around welds, known as HAZ (heat-affected zone) softening (Figure 6.1). With the 6xxx-series alloys, the heat of welding can locally reduce the parent metal strength by nearly half. With 7xxx alloys, the weakening is less severe, but extends further out from the weld.