34. Interstellar Matter (Matiere Interstellaire)

1988 ◽  
Vol 20 (01) ◽  
pp. 423-471
Author(s):  
J. Lequeux ◽  
J.S. Mathis ◽  
K.S. de Boer ◽  
S. D’Odorico ◽  
B.G. Elmegreen ◽  
...  
Keyword(s):  
Interstellar Matter ◽  
Working Groups ◽  
The Subject ◽  
Astronomical Research

The previous report started with optimistic remarks about the increasing importance of the study of interstellar matter in astronomy. This trend has largely been confirmed in the 1985-87 period and it is clear that the subject of our Commission is one of the most active fields of astronomical research. This is also shown by the rapidly growing number of members and by the constitution of new working groups. The major new event in the period has undoubtly been the availability of IRAS data.

scholarly journals 34. Interstellar Matter

1985 ◽  
Vol 19 (1) ◽  
pp. 437-478
Author(s):  
M. Peimbert ◽  
J. Lequeux ◽  
S. D’Odorico ◽  
B. G. Elmegreen ◽  
E. B. Kostyakova ◽  
...  
Keyword(s):  
Interstellar Medium ◽  
Present State ◽  
Theoretical Models ◽  
Interstellar Matter ◽  
Evolution Of The Universe ◽  
Formation And Evolution ◽  
The Subject ◽  
Astronomical Research ◽  
Theories Of Evolution ◽  
The Universe

It has become more evident during the last three years that the study of interstellar matter is paramount to understand the evolution of the universe and its constituents. From observations of the present state of the interstellar medium, in our galaxy, in other galaxies, and between galaxies, it is possible to test theories of: evolution of the universe, formation and evolution of galaxies, formation and evolution of stars and of the evolution of the interstellar medium itself. The amount of information on the interstellar medium that has been gathered during the 1982-1984 period has been very large and the theoretical models that have been ellaborated to explain these observations have been very numerous, these facts show that the subject of our Commission constitutes a very active field of astronomical research.

scholarly journals 34. Interstellar Matter and Planetary Nebulae

1976 ◽  
Vol 16 (3) ◽  
pp. 73-115 ◽  
Author(s):  
H. van Woerden
Keyword(s):  
Cosmic Ray ◽  
Electromagnetic Spectrum ◽  
Interstellar Matter ◽  
Radio Waves ◽  
Chemical Research ◽  
Mathematical Methods ◽  
Leading Role ◽  
Stellar Astronomy ◽  
The Subject ◽  
Astronomical Research

The subject of interstellar matter is one of the most active fields of astronomical research to-day. Observational information spans the full electromagnetic spectrum from long radio waves to gamma rays and includes cosmic-ray particles. Results of chemical research find as much application now as mathematical methods. Interstellar matter plays a leading role in galactic and extragalactic research, and contributes increasingly to stellar astronomy and in solar system studies.

scholarly journals 34. Interstellar Matter and Planetary Nebulae

1982 ◽  
Vol 18 (1) ◽  
pp. 413-456
Author(s):  
V. Radhakrishnan
Keyword(s):  
Planetary Nebulae ◽  
Theoretical Work ◽  
Electromagnetic Spectrum ◽  
Interstellar Matter ◽  
Observational Material ◽  
The Subject ◽  
Astronomical Research ◽  
New Instruments ◽  
Different Parts

The subject of interstellar matter continues to be one of the most active fields of present day astronomical research. The advent of new instruments operating in the different parts of the electromagnetic spectrum has resulted in a phenomenal increase both in the amount of observational material, and in the theoretical work attempting to interpret or model the observations. This has made it increasingly difficult to cite all of the published work in the field, and to have room to report even in brief on the conclusions of these studies.

The IAU Strategic Plan 2020–2030, a blueprint for forging a new social revolution in astronomy and for using astronomy as a tool for building a progressive society

2019 ◽  
Vol 15 (S367) ◽  
pp. 14-23
Author(s):  
John B. Hearnshaw
Keyword(s):  
Strategic Plan ◽  
Women In Science ◽  
School Level ◽  
Social Revolution ◽  
The Public ◽  
New Frontier ◽  
Information And Communication ◽  
Working Groups ◽  
Astronomical Research ◽  
The Individual

AbstractI discuss the second IAU Strategic Plan for the decade 2020–30 in the context of the overall evolution of the IAU in recent past decades. This article shows how the IAU has evolved dramatically since WW2. It is hardly recognizable in terms of its original organization and goals of a century ago. What was once an inward-looking body engaged purely with the procedures of astronomical research is now a dynamic and outward-looking organization, interacting with people, especially students and the public.A large part of this success must be attributed to the IAU’s unique body of individual members, whose number has grown strongly in recent decades. It is the individual members, especially through the Commissions and Working Groups, who have promoted these enormous changes in the outlook of the Union. This is a model for other scientific unions to follow, and especially for the work to promote the careers of women in science, for promoting the careers of young astronomers, for bringing students into astronomy or into science in general, for helping people with disabilities to have careers in astronomy, for engaging with the public, and for helping to develop astronomy and science in developing countries.Looking to the future, the IAU’s new Strategic Plan for the years 2020 to 2030 has five major goals for the coming decade: 1. The IAU leads the worldwide coordination of astronomy and the fostering of communication and dissemination of astronomical knowledge among professional astronomers. 2. The IAU promotes the inclusive advancement of the field of astronomy in every country. 3. The IAU promotes the use of astronomy as a tool for development in every country. 4. The IAU engages the public in astronomy through access to astronomical information and communication of the science of astronomy. 5. The IAU stimulates the use of astronomy for teaching and education at school level.Future developments will also be engaging with the large number of amateur astronomers and helping to promote astro-tourism, which is perhaps the new frontier now growing rapidly around the world. The Strategic Plan is a blueprint for forging a social revolution in astronomy and for using astronomy as a tool for building a progressive society.

Proacustica Handbook: noise and vibration control in building installations

2021 ◽  
Vol 263 (1) ◽  
pp. 5057-5062
Author(s):  
Jose Nepomuceno ◽  
Priscila Wunderlich
Keyword(s):  
Vibration Control ◽  
Vibration Isolation ◽  
Control Strategies ◽  
Room Acoustics ◽  
Noise And Vibration ◽  
Technical Content ◽  
Working Groups ◽  
Environmental Acoustics ◽  
The Subject ◽  
The Moment

Proacústica is a nonprofit entity created in 2010 to congregate companies and professionals willing to leverage the development of acoustics in Brazil. Three technical committees (TCs): Environmental Acoustics, Building Acoustics, and Room Acoustics, contribute to the drafting of laws, standards, production of technical content, and integration between different players of the market. By 2021, the Room Acoustics TC incorporated three Working Groups: Special Rooms, Schools and Noise Control and Vibration Control - the last one dedicated to the Proacustica Handbook: Noise and Vibration Control In Building Installations. The purpose of this publication is to describe the step-by-step measures to implement noise and vibration control strategies in buildings. These strategies are aimed at the particularities of the Brazilian market at the moment and also a way to improve how M/E/P equipment manufacturers, installers, designers, and acoustic consultants approach the subject from the design to the construction, Important technical discussions among participants included: the use of sound pressure versus sound power data for equipment; the sound rating for diffusers, VAVs, and other ductwork devices; vibration isolation guidelines, among other topics. This paper presents the Handbook structure, relevant discussions, and recommendations to be published as a final document by the end of 2021.

scholarly journals Division VI: Interstellar Matter

2005 ◽  
Vol 1 (T26A) ◽  
pp. 267-271
Author(s):  
John Dyson ◽  
Tom Millar ◽  
You-Hua Chu ◽  
Gary Ferland ◽  
Pepe Franco ◽  
...  
Keyword(s):  
Observational Studies ◽  
Interstellar Matter ◽  
Molecular Physics ◽  
Radiative Processes ◽  
The Past ◽  
Evolved Stars ◽  
Working Groups ◽  
Key Aspects ◽  
Physical And Chemical ◽  
Diffuse Matter

Commission 34 covers diffuse matter in space on scales ranging from the circumstellar to the galactic and intergalactic. As such it has enormous scope and because of this, it alone forms Division VI. Key aspects include star formation, matter around evolved stars, astrochemistry, nebulae, galactic and intergalactic clouds and the multitude of effects of the interaction of stars with their surroundings. Associated with these areas are a huge range of physical and chemical processes including hydrodynamics and magnetohydrodynamics, radiative processes, molecular physics and chemistry, plasma processes and others too numerous to name. These are complemented by an equally huge range of observational studies using practically all space and ground-based instrumentation at nearly all observable wavelengths. A glance at any data-base of publications over the past few years attests to the vigorous state of these studies. The current membership of the Division is around 800. It also has three separate working groups.

scholarly journals Theory of Spiral Structure

1971 ◽  
Vol 2 ◽  
pp. 88-121 ◽  
Author(s):  
C. C. Lin
Keyword(s):  
Theoretical Analysis ◽  
Observational Data ◽  
Spiral Galaxies ◽  
Spiral Structure ◽  
Interstellar Matter ◽  
Spiral Arms ◽  
The Subject ◽  
To Receive

It is an honor for me to continue the discussion of galactic spirals following Professor Bok, who has contributed to the subject for many years. My experience has been relatively short. My first encounter with the study of galactic spirals occurred in 1961, when I was invited by Professor Bengt Strömgren to attend a conference on interstellar matter at Princeton, N.J. There I first learned about the winding dilemma from Professor Jan Oort. After the conference, Professor Lodewijk Woltjer, who edited the Proceedings, visited me for about a month. Thus, I began slowly to learn about spiral galaxies and to work on the subject. It turned out to be an extremely rewarding experience, for the observational data were already ripe for theoretical analysis, and the hydromagnetic theory of spiral arms was clearly encountering great difficulties. Since I was not educated as an astronomer, I owe my gratitude to Professors Strömgren, Woltjer, and Kevin Prendergast, on whom I depended for correct astronomical facts as I started my work. Without their help, I would not be standing here today. Later on, I was to receive help from many other distinguished astronomers, including Professor Bok from whom you just heard. I am greatly impressed with the community of astronomers as a dedicated group of scientists.

scholarly journals Pengaruh Program Musyawarah Guru Mata Pelajaran (MGMP) dan Musyawarah Kelompok Kerja Kepala Sekolah (MKKKS) terhadap Peningkatan Kinerja Guru di Kabupaten Kutai Kartanegara

2019 ◽  
Vol 7 (1) ◽  
pp. 71-85
Author(s):  
Agus Santoso ◽  
Andi Achmad ◽  
Muhammad Ibnusyam Wardana
Keyword(s):  
Teacher Performance ◽  
Field Research ◽  
School Principal ◽  
The Other ◽  
Validity Test ◽  
Other Hand ◽  
New Information ◽  
Working Groups ◽  
The Subject ◽  
The Government

Apathy about teacher performance in schools is one reality. The fact of the tendency of doubt about the performance of the teacher could have been caused by the absence of the development of knowledge and skills related to the four teacher competencies. On the other hand, there is still a problem regarding the lack of systematic management of school performance programs that are not managed systematically and are not in accordance with the education calendar that has been formulated and established so that in daily implementation the school is always changing, disrupting the learning process that has been determined. To overcome these obstacles a place for teachers and principals is needed that aims to gather various new information and experiences in the industrial era 4.0. The purpose of this study was to determine the effect of the Subject Teachers' Consultation and School Principal Working Groups simultaneously on Improving Teacher Performance in Kutai Kartanegara District. This type of research is a field research with a quantitative approach. Data collection techniques in this study used a questionnaire and documentation. Data validity test uses validity test, normality test and classic assumption test. Data analysis techniques using multiple linear regression test. Based on the results of the study note that there is no simultaneous effect between the Subject Teachers' Deliberation Program and the Principal Working Group Conference on Improving Teacher Performance in Kutai Kartanegara District. The absence of this influence is due to the the Subject Teachers' Deliberation Program and School Principal Working Groups in Kutai Kartanegara Regency which are considered not working properly according to the planned program. Whereas on the other hand it is considered a lack of support from stakeholders in the area, in this case the government which oversees the Subject Teachers' Deliberation Program and School Principal Working Groups. So based on data between the Subject Teachers' Deliberation Program and School Principal Working Groups, they have not synergized well.

Routing at Sea 1857–1977

1978 ◽  
Vol 31 (2) ◽  
pp. 167-202 ◽  
Author(s):  
J. H. Beattie
Keyword(s):  
Great Lakes ◽  
Royal Institute ◽  
North West ◽  
History Of ◽  
Working Groups ◽  
The Subject

The Royal Institute of Navigation, with its counterparts in France and Germany, played a fundamental role in the introduction of traffic separation at sea, a role that is freely acknowledged in Imco's publications on the subject. J. H. Beattie, who was a member of the successive international working groups whose reports led to the introduction of routing, first of all in the Dover Strait and later throughout North West Europe, recounts the history of routing at sea, whose origins lay perhaps in the Great Lakes. A condensed version of this paper was presented at an Ordinary Meeting of the Institute on 14 December 1977, followed by Captain Emden's paper which is printed at page 203 with the ensuing discussion. Captain Maybourn was in the chair.

scholarly journals Side Effects of Space Debris on Astronomical Observation

1991 ◽  
Vol 112 ◽  
pp. 115-125
Author(s):  
Paul D. Maley
Keyword(s):  
Optical Spectrum ◽  
Space Debris ◽  
Volcanic Eruptions ◽  
Astronomical Observation ◽  
Artificial Earth Satellites ◽  
Artificial Earth ◽  
The Subject ◽  
Astronomical Research ◽  
Gathering Data ◽  
Atmospheric Seeing

Astronomical research continues to use ground-based facilities as a principal means of gathering data. The optical light buckets which are trained each night on celestial sources have historically had to just contend with natural interference. Sunlight, moonlight, clouds, debris created by volcanic eruptions, atmospheric seeing, and aurora are examples of factors which modify the interception and analysis of energy radiated in the optical spectrum and received at the collector end. In the last 5 years the “unnatural” encounters with artificial earth satellites are making themselves more pronounced and have become the subject of this limited study.

Sign in / Sign up

Export Citation Format

Share Document