The Bonner Spectral Atlas and Three-Dimensional Classification at Low Dispersions

1976 ◽  
Vol 72 ◽  
pp. 129-133
Author(s):  
W. C. Seitter
Keyword(s):  
Three Dimensional ◽  
List Type ◽  
Type Number ◽  
Late Type ◽  
The Third ◽  
The Past ◽  
Dimensional Classification ◽  
Composite Spectra ◽  
Peculiar Stars ◽  
Ap Stars

Work on the third part of the Bonner Spectral Atlas: Peculiar Stars has well progressed during the past year. Observations of the more than 200 stars – photographed with a dispersion of 240 Å mm−1 at Hγ on I-N plates – is nearing completion.The arrangement of the spectra will be as follows: 1.WR-stars2.O-stars Of sequence3.Peculiar B-type stars emission-line objects4.Ap-stars with various sequences: Cr-Mn-Hg-rare earths5.Asi-stars6.Am-stars7.Late-type peculiar stars Ba II, CH8.C-stars9.Late M-type stars10.S-stars11.Composite spectra12.Spectra with large rotational broadeningThe 12 groups are displayed on 40 plates, each with 6–8 objects. Stars of groups 8 to 10 will be presented with different exposures in order to facilitate the discovery of faint objects.Sample plates will be shown and discussed.

Tethering in pastures new

2018 ◽  
Vol 102 (554) ◽  
pp. 233-245
Author(s):  
John D. Mahony
Keyword(s):  
Numerical Methods ◽  
Three Dimensional ◽  
The Other ◽  
List Type ◽  
Type Number ◽  
The Third ◽  
Slip Rings

In a recent and illuminating article that provided much food for thought [1], the problem of tethering a goat at the edge of a circular pasture so as to restrict its attentions to only one half of the grazing supply was elegantly addressed and developed further to embrace the corresponding three-dimensional scenario involving a bird. The exercises resulted in mathematical formulations that required the use of numerical methods to extract practical results. Following the article, various questions and different scenarios sprang to my mind. The following poser perhaps best illustrates one of these, and it is the purpose of this Article to address this particular conundrum:A grazier has three troublesome beasts that are water averse, eat grass and who will, given half a chance, eat one another also in some fashion. The first will eat the other two and the second will eat only the third, which eats just grass. Having stabled and fed them in separate stalls during the winter months he plans to release them in the spring to an arbitrarily elliptic shaped pasture up to the water's edge in the middle of a lake. He has at his disposal: (1)A drum of tethering rope from which he can cut just once any required length, TBD (To Be Determined).(2)Slip rings and two tethering pegs that can be positioned only on the pasture boundary (i.e. at the water's edge).

scholarly journals Modelling declassification policies using abstract domain completeness

2011 ◽  
Vol 21 (6) ◽  
pp. 1253-1299 ◽  
Author(s):  
ISABELLA MASTROENI ◽  
ANINDYA BANERJEE
Keyword(s):  
Three Dimensional ◽  
Public Information ◽  
Denotational Semantics ◽  
Program Execution ◽  
List Type ◽  
Type Number ◽  
The Third ◽  
Trace Semantics ◽  
Third Dimension ◽  
Partition Refinement

This paper explores a three dimensional characterisation of a declassification-based non-interference policy and its consequences. Two of the dimensions consist of specifying:(a)the power of the attacker, that is, what public information a program has that an attacker can observe; and(b)what secret information a program has that needs to be protected.Both these dimensions are regulated by the third dimension:(c)the choice of program semantics, for example, trace semantics or denotational semantics, or any semantics in Cousot's semantics hierarchy.To check whether a program satisfies a non-interference policy, one can compute an abstract domain that over-approximates the information released by the policy and then check whether program execution can release more information than permitted by the policy. Counterexamples to a policy can be generated by using a variant of the Paige–Tarjan algorithm for partition refinement. Given the counterexamples, the policy can be refined so that the least amount of confidential information required for making the program secure is declassified.

Het meten van psychomotorische vertraging bij depressie deel II

1998 ◽  
Vol 10 (3) ◽  
pp. 51-57
Author(s):  
B. Sabbe ◽  
J. Van Hoof ◽  
W. Hulstijn ◽  
F. Zitman
Keyword(s):  
Psychomotor Retardation ◽  
Fine Motor ◽  
List Type ◽  
Motor Behaviour ◽  
Type Number ◽  
The Past ◽  
Depressed Patients ◽  
Nonverbal Behaviour ◽  
Speech Research ◽  
Antidepressive Treatment

SummaryThis review (part I and II) contains an overview of the literature of the past fifteen years over psychomotor retardation in depressed patients, as measured by the following methods:observation scales (part I);observation, coding and analysis of specific nonverbal behaviour (part I);speech research (part I);(choice) reaction time tasks (part II);analysis of gross motor activity (part II);of fine motor behaviour (part II).In each section the results of the different studies are summarized and discussed, in order to answer the following questions: (a) did the depressed patients show any retardation?, (b) how did this retardation manifest itself?, (c) what was the nature of the retardation?, (d) were there any correlations with the results of other methods? and (e) what were the effects of antidepressive treatment?

scholarly journals Part 2: The Third International Radiocarbon Intercomparison (Tiri)

Radiocarbon ◽  
2003 ◽  
Vol 45 (2) ◽  
pp. 293-328 ◽  
Keyword(s):  
Quality Assurance ◽  
Objective Measure ◽  
List Type ◽  
Type Number ◽  
Analytical Quality ◽  
The Third ◽  
Self Help ◽  
The World

TIRI was officially launched at the 14th International Radiocarbon Conference in Arizona in 1991. Prior to the conference, 150 laboratories received a letter describing the general intention to organize an intercomparison and over 90 laboratories from around the world responded positively to the invitation to participate. Simply stated, the aims of this intercomparison were: 1.To function as the third arm of the quality assurance (QA) procedure.2.To provide an objective measure of the maintenance and improvement in analytical quality.3.To assist in the development of a “self-help” scheme for participating laboratories.

Some Sources of 15th Century English Music

1949 ◽  
Vol 2 (4) ◽  
pp. 65-67
Author(s):  
Manfred F. Bukofzer
Keyword(s):  
British Museum ◽  
List Type ◽  
Type Number ◽  
Separate Part ◽  
The Past ◽  
15Th Century ◽  
Annotated List ◽  
English Music

In the past years a number of manuscripts and small fragments have come to light which enlarge in various degrees our knowledge of 15th-century music in England. It may be useful to give a brief annotated list:1.British Museum, Add. MS 40011 B. Flyleaves from a Memorandum Book of Fountains Abbey containing three- and four-part settings of the Mass, and a few motets some of which are incomplete. The fragment is valuable especially for the concordances with the Old Hall MS.2.British Museum, Egerton MS 3307. Thematic catalogue: Schofield, The Musical Quarterly XXXII (1946), 509. This manuscript is one of the most important recent additions to English music of the Renaissance. It transmits a series of sacred compositions for Holy Week, and, in a separate part, carols with English words and Latin cantilenas for two and three voices. Of particular interest are a three-voice composition of the old Goliard song O potores exquisiti and a four-part motet Cantemus Domino socie, based in its text on the beginning of an elegy by Sedulius.

Economic Lirowth and Human Rights in Brazil: The First Nine Years of Military Tutelage

1973 ◽  
Vol 67 (5) ◽  
pp. 208-213
Author(s):  
Brady Tyson
Keyword(s):  
Distribution Patterns ◽  
Police Brutality ◽  
List Type ◽  
Type Number ◽  
Political Democracy ◽  
The Past ◽  
The People ◽  
The Military ◽  
The City

This is an interim, summary and provisional judgment on the Brazilian experiment of the past nine years, that is, since the military took power on April 1, 1964. To try to give an impression of the results of the interaction among the values of political democracy, equality, and economic growth, and the present levels compared with those of 1964 as well as what appear to be the trends. I have chosen six “indicators”:(1)the autonomy and integrity of the legal system;(2)torture and police brutality;(3)freedom of the mass media;(4)income distribution patterns;(5)education distribution patterns; and(6)the quality of life of the people of the city of greater São Paulo.

Commission 49: The Interplanetary Plasma and the Heliosphere (Plasma Intsrplanetaire Et L’heliosphere)

1988 ◽  
Vol 20 (1) ◽  
pp. 677-681
Author(s):  
S. Grzedzielski ◽  
L.F. Burlaga
Keyword(s):  
Solar Wind ◽  
Three Dimensional ◽  
List Type ◽  
Type Number ◽  
Local Interstellar Medium ◽  
Solar Origin ◽  
Area Of Interest ◽  
Recent Developments ◽  
Interplanetary Plasma ◽  
Solar Wind Composition

The area of interest to the Commission includes: 1.Solar wind composition and dynamics;2.Solar Interaction of solar wind with extended interplanetary sources of plasma and gases of non-solar origin;3.SolarStructure and dynamics of the three-dimensional heliosphere;4.SolarInteraction of heliosphere with the local interstellar medium.The following reports summarize recent developments in the aforementioned fields.

Increased Use of Helicopters in Commercial Agriculture

1966 ◽  
Vol 70 (672) ◽  
pp. 1073-1075
Author(s):  
R. A. Moore
Keyword(s):  
World Population ◽  
List Type ◽  
Primary Reason ◽  
Type Number ◽  
Commercial Agriculture ◽  
Remarkable Increase ◽  
The Past ◽  
Population Explosion ◽  
The People ◽  
The World

The past few years have evidenced a remarkable increase in the use of helicopters in agriculture. There are any number of individual reasons for this: helicopters are more plentiful, for example, but the primary reason is one of simple economics combined with a capability to meet new demands. The demands have been generated by the overwhelming population explosion. Sometimes hard to imagine and even more difficult to cope with, but the facts remain that:1.25 % of all the people that ever existed on earth are living on it today,2.The world population increases at a rate of 5400 people every hour; and3.This staggering number of people will double again within the next 40 years.

Suppositions, Presuppositions, Ontology1

1993 ◽  
Vol 23 (4) ◽  
pp. 595-618 ◽  
Author(s):  
Ian Hinckfuss
Keyword(s):  
Alternative Explanation ◽  
List Type ◽  
Type Number ◽  
The Past

It has been widely accepted in the past and it remains accepted in many quarters even now, that an ontologically economical (nominalist or fictionalist) position is to be rejected if the corresponding Platonic or otherwise ontologically prodigal discourse cannot be translated, paraphrased or otherwise ‘reduced’ to discourse exhibiting a more economical ontology. Such an attitude is often accompanied by (a)the claim that the prodigal ontology explains some important truthsand(b)the demand that the nominalist or fictionalist or economicalist provide an alternative explanation for those truths — perhaps in terms of ontologically economical ersatz substitutes for the prodigal entities.

scholarly journals Introduction to the session

1979 ◽  
Vol 84 ◽  
pp. 323-323
Keyword(s):  
High Resolution ◽  
Observational Data ◽  
Far Infrared ◽  
List Type ◽  
Type Number ◽  
Ionized Gas ◽  
The Past ◽  
Hydrogen Recombination ◽  
Great Development

There has been a great development in the past few years of observational data of various kinds: (a)HI observations of high resolution and sensitivity (Cohen and Davies, Burton et al., Kerr et al.)(b)Observations of molecules, in particular high-resolution observations of CO (Burton, Gordon, Bania, Liszt, Solomon et al.)(c)Infrared and far-infrared(d)Ionized gas: hydrogen recombination lines, and in particular Nell (with 4″ beam) (Mezger et al., Townes, Wollman et al.)

Sign in / Sign up

Export Citation Format

Share Document