The basic set of operations for the relational model is known as the relational algebra. These operations enable a user to specify basic retrieval requests.
The result of a retrieval is a new relation, which may have been formed from one or more relations. The algebra operations thus produce new relations, which can be further manipulated using operations of the same algebra.
The European Commission contracted RAND Europe and the Trimbos Institute to analyse in detail the operation of the world market in illicit drugs and the policies aimed at curtailing it. This was in the context of the European Union’s Strategy on Drugs 20052012 which calls for evidence-based policies and in turn responds to the EU Resolution adopted by the UN’s Commission on Narcotic Drugs, calling for ‘… an objective, scientific, balanced and transparent assessment by Member States of the global progress achieved and of the difficulties encountered in...
This influential study, originally published in 1951, provides insight into the political leadership and foreign policy in the Soviet Union and other communist states; the development of Soviet military strategy and doctrine; and the organization and operation of the Soviet economy. It was the inaugural publication in what was then called ...
We describe an implementation in Carpenter's typed feature formalism, ALE, of a discourse gramm a r of the kind proposed by Scha, Polanyi, et al. We examine their method for resolving parallelism-dependent anaphora and show that there is a coherent feature-structural rendition of this type of grammar which uses the operations of prwrity union and generalization.
This paper provides a model theoretic semantics to feature terms augmented with set descriptions. We provide constraints to specify HPSG style set descriptions, fixed cardinality set descriptions, set-membership constraints, restricted universal role quantifications, set union, intersection, subset and disjointness. A sound, complete and terminating consistency checking procedure is provided to determine the consistency of any given term in the logic. It is shown that determining consistency of terms is a NP-complete problem. ...
This module continues the discussion of the class begun in Module 8. It examines a number of
class-related topics, including overloading constructors, passing objects to functions, and returning
objects. It also describes a special type of constructor, called the copy constructor, which is used when a
copy of an object is needed. Next, friend functions are described, followed by structures and unions, and
the ‘this’ keyword. The module concludes with a discussion of operator overloading, one of C++’s most
Because this is a book about web development and operations, you need to know more than
just how to build web sites. You also have to understand how teams within a company interact,
and which best practices it’s important to follow. The interaction of software engineers and system
administrators has given rise to the term developer operations or DevOps, because of the
way these teams cross each other’s boundaries to work as a single logical unit.
The Society for Assisted Reproductive Technology (SART) is an affiliate of
ASRM. Its membership includes more than 90% of American fertility clinics.
SART has strict membership requirements. As a condition of membership,
clinics must report their outcomes to the CDC as well as to SART, have
accredited embryology laboratories, adhere to the Ethics and Practice
Committee guidelines of ASRM, and have appropriately trained staff. Failure
to adhere to these criteria can result in revocation of membership.
The great majority of the clips in the “100 Years” montage comprise iconic
moments from significant performances: Al Pacino shouting “Attica!” in Dog Day
Afternoon; Sally Field holding up a “Union” sign in Norma Rae; Whoopi Goldberg’s
body being “taken over” by Patrick Swayze in Ghost; Cagney and the Public Enemy
grapefruit; Diane Keaton’s “La-di-dah” as Annie Hall.
The impact of AIFM on the markets in which they operate is largely beneficial, but recent
financial difficulties have underlined how activities of AIFM may also serve to spread or
amplify risks through the financial system. Uncoordinated national responses to these risks
make the efficient management of these risks difficult. This Directive therefore aims at
establishing common requirements governing the authorisation and supervision of AIFM in
order to provide a coherent approach to the related risks and their impact on investors and
markets in the European Union. ...
We met first in September and were required to report by the end of the year.
The FRC’s announcement invited comments on the issues raised in our terms of
reference. In addition, we wrote to representative organisations and to leading
audit firms inviting their comments and assistance. A list of those who offered
comments is given in Appendix V. We have looked at experience in other
countries and noted current developments in the United States, the European
Union and elsewhere – see Appendix III.
This is the first of two reports that address the complex issue of incorporating the needs of climate research
into the National Polar-orbiting Operational Environmental Satellite System (NPOESS). NPOESS, which has
been driven by the imperative of reliably providing short-term weather information, is itself a union of heretofore
separate civilian and military programs. It is a marriage of convenience to eliminate needless duplication and
reduce cost, one that appears to be working.
For surface treatment processes of metals and plastics by electrolytic and chemical processes
using solvents, the Integrated Pollution, Prevention and Control (IPPC) Directive 96/61/EC
applies. Industrial production processes account for a considerable share of overall pollution
in Europe (for emissions of greenhouse gases and acidifying substances, wastewater
emissions and waste). The EU has established a set of common rules for permitting and
controlling industrial installations in this IPPC Directive.
After reading this chapter, you will be able to: Define money, its functions, and its characteristics; describe various types of money; specify how the Bank of Canada manages the money supply and regulates the Canadian banking system; compare and contrast banks, trust companies, and credit unions/caisses populaires;...
Chapter 15: Money and the financial system. This chapter include objectives: Define money, its functions, and its characteristics; describe various types of money; specify how the federal reserve board manages the money supply and regulates the american banking system; compare and contrast commercial banks, savings and loan associations, credit unions, and mutual savings banks;...
It is widely believed that changes in exchange rates have important implications for financial decision-making and for the profitability of firms. One of the central motivations for the creation of the euro was to eliminate exchange rate risk to enable European firms to operate free from the uncertainties of changes in relative prices
resulting from exchange rate movements. At the macro level, there is evidence that the creation of such currency unions results in a dramatic increase in bilateral trade (Frankel and Rose, 2002)....
On September 15, 2008, Lehman Brothers, the fourth-largest U.S. investment
bank, filed for bankruptcy, marking the largest bankruptcy in U.S. history and
the burst of the U.S. subprime mortgage crisis. Concerns about the soundness of
U.S. credit and financial markets led to tightened global credit markets around
the world. Spreads skyrocketed. International trade plummeted by double digits,
as figure O.1 illustrates. Banks reportedly could not meet customer demand to
finance international trade operations, leaving a trade finance “gap” estimated at
around $25 billion.
Since its establishment in 1959, the International Maritime Organization and its Member Governments, in close
co-operation with the International Telecommunication Union (ITU) and with other international organizations,
notably the World Meteorological Organization (WMO), the International Hydrographic Organization
(IHO) and the International Mobile Satellite Organization (Inmarsat), and with the COSPAS–SARSAT partners,
have striven to improve maritime distress and safety radiocommunications.
MANET is an autonomous system of
mobile routers (and associated hosts)
connected by wireless links--the union
of which form an arbitrary graph. The
routers are free to move randomly and
organize themselves arbitrarily; thus,
the network's wireless topology may
change rapidly and unpredictably. Such
a network may operate in a standalone