RECENT DEVELOPMENTS IN GEOCHEMICAL PROSPECTING FOR PETROLEUM

Geophysics ◽  
1945 ◽  
Vol 10 (4) ◽  
pp. 487-493 ◽  
Author(s):  
Leo Horvitz
Keyword(s):  
The Other ◽  
Geochemical Prospecting ◽  
The Past ◽  
Geochemical Anomalies ◽  
Geochemical Survey ◽  
Recent Developments ◽  
Petroleum Accumulation

A number of surveys completed during the past two years indicate that the geochemical prospecting technique can be applied successfully only when an area is explored which is sufficiently large to enable ready distinction of the anomaly from the background. Geochemical anomalies found by reconnaissance sampling have been proved to be associated with structure by the reflection seismograph. These confirmations indicate that the two methods can be used to supplement one another; one to detect the possible presence of a petroleum accumulation and the other to determine the probable depth of the accumulation. The result of a reconnaissance geochemical survey over the Heidelberg Area of Jasper County, Mississippi, are presented.

scholarly journals Digital image steganography and steganalysis: A journey of the past three decades

2020 ◽  
Vol 10 (1) ◽  
pp. 296-342
Author(s):  
Aditya Kumar Sahu ◽  
Monalisa Sahu
Keyword(s):  
Digital Image ◽  
Image Steganography ◽  
The Other ◽  
Current Status ◽  
Covert Communication ◽  
Hiding Capacity ◽  
The Past ◽  
Science And Art ◽  
Recent Developments ◽  
Fair Balance

AbstractSteganography is the science and art of covert communication. Conversely, steganalysis is the study of uncovering the steganographic process. The evolution of steganography has been paralleled by the development of steganalysis. In this game of hide and seek, the two player’s steganography and steganalysis always want to break the other down. Over the past three decades, research has produced a plethora of remarkable image steganography techniques (ISTs). The major challenge for most of these ISTs is to achieve a fair balance between the metrics such as high hiding capacity (HC), better imperceptibility, and improved security. This study aims to present an exhaustive scrutiny of various ISTs from the classical to recent developments in the spatial domain, with respect to various image steganographic metrics. Further, the current status, recent developments, open challenges, and promising directions in this field are also highlighted.

scholarly journals A First Glance at the Pakistan Age Distribution

1961 ◽  
Vol 1 (1) ◽  
pp. 64-75
Author(s):  
Karol J. Krotki
Keyword(s):  
Age Distribution ◽  
The Other ◽  
First Impressions ◽  
Simple Fact ◽  
The Past ◽  
Recent Developments ◽  
Advance Notice ◽  
Demographic Theory ◽  
And Migration ◽  
Initial Impressions

What follows is not only a summary of first impressions, but it is also limited to Pakistan as a whole, i.e., inter-regional differentials are not inves¬tigated. Furthermore, the following comments are limited to the youngest ages. In particular, no discussion is offered of the age distribution at the oldest ages. In any case the latter is partly a freak of the peculiar assumption on which it is drawn, namely, that nobody in Pakistan lives beyond the age of eighty. These are very severe limitations and in part what follows is more in the nature of advance notice of research to be undertaken than it is a report on substantive findings. Nevertheless, the initial impressions are of a startling enough nature to justify disclosure at this stage, but on the distinct understanding that they may on further inquiry prove illusory. The observations of this note are based on the simple fact that the population of any area at any time is a function of fertility, mortality and migration prevailing in the past. There are two ways in which these three influences show themselves: on the age distribution and the rate of growth. In a way, it may be more helpful to say that age distribution and growth are the other side of the same thing, namely, the combined product of fertility, mortality and migration. In fact, this is such a wide and all-em¬bracing statement that it may seem almost meaningless. However, relatively recent developments in demographic theory furnish powerful tools for analysis of age distribution and growth. Evidence of growth, such as it is, is not considered in this note. As already indicated, the discussion is limited to age distribution.

scholarly journals TAREKAT DAN INTELEKTUALITAS: Studi Keterlibatan Kalangan Intelektual dalam Tarekat Tijaniyah di Kota Banjarmasin

2016 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
Saifuddin . ◽  
Wardani . ◽  
Dzikri Nirwana
Keyword(s):  
The Other ◽  
Rural Culture ◽  
The Past ◽  
Other Hand ◽  
The People ◽  
Recent Developments ◽  
The One ◽  
The Individual

The development of tariqat in Indonesia is historically and sociologically related to the climate and culture of the people who in the past was formed by rural culture. However, in recent developments, in South Kalimantan for example, the assumption is very different. Although, this tariqat is usually described as traditional, backward, and associated with the countryside, it is not entirely true. With its tradisional nature, the tariqat become attractions for scholars. Those with rational thingkings entering this world with diverse motivations. There are two complementary sides. On the one hand, rational intellectuals/scholars enter into the tariqat and give a new baseline. On the other hand, the members of the tariqat also renew themselves. Motivations that drive the interest to this tariqat are doctrinal, rational, moral, and psychological. This motivation does not stand alone; it is intertwined and supports each other, in the internalization of the tariqat into the consciousness of the individual.

Immunoferritin localization of intracellular antigens in positively stained frozen sections

1978 ◽  
Vol 36 (2) ◽  
pp. 168-169
Author(s):  
K. T. Tokuyasu
Keyword(s):  
Surface Tension ◽  
Water Surface ◽  
Thin Layers ◽  
The Other ◽  
Positive Staining ◽  
Frozen Sections ◽  
The Past ◽  
Ultrathin Frozen Sections ◽  
Definition Of

During the past investigations of immunoferritin localization of intracellular antigens in ultrathin frozen sections, we found that the degree of negative staining required to delineate u1trastructural details was often too dense for the recognition of ferritin particles. The quality of positive staining of ultrathin frozen sections, on the other hand, has generally been far inferior to that attainable in conventional plastic embedded sections, particularly in the definition of membranes. As we discussed before, a main cause of this difficulty seemed to be the vulnerability of frozen sections to the damaging effects of air-water surface tension at the time of drying of the sections.Indeed, we found that the quality of positive staining is greatly improved when positively stained frozen sections are protected against the effects of surface tension by embedding them in thin layers of mechanically stable materials at the time of drying (unpublished).

Applications of Through-Focus Dark Field Image Shifts to Phase Identification

1975 ◽  
Vol 33 ◽  
pp. 178-179
Author(s):  
Prakash Rao
Keyword(s):  
Dark Field Image ◽  
Thin Foil ◽  
Dark Field ◽  
The Other ◽  
Stereo Image ◽  
Phase Identification ◽  
The Past ◽  
Field Electron Microscopy ◽  
Dark Field Electron ◽  
Recent Extension

Image shifts in out-of-focus dark field images have been used in the past to determine, for example, epitaxial relationships in thin films. A recent extension of the use of dark field image shifts has been to out-of-focus images in conjunction with stereoviewing to produce an artificial stereo image effect. The technique, called through-focus dark field electron microscopy or 2-1/2D microscopy, basically involves obtaining two beam-tilted dark field images such that one is slightly over-focus and the other slightly under-focus, followed by examination of the two images through a conventional stereoviewer. The elevation differences so produced are usually unrelated to object positions in the thin foil and no specimen tilting is required.In order to produce this artificial stereo effect for the purpose of phase separation and identification, it is first necessary to select a region of the diffraction pattern containing more than just one discrete spot, with the objective aperture.

‘Newness which never perishes’? Schoenberg’s ambivalent reception of Haydn

2010 ◽  
Vol 51 (1-2) ◽  
pp. 215-224
Author(s):  
Alexander Carpenter
Keyword(s):  
The Other ◽  
Major Influence ◽  
Musical Style ◽  
The Past ◽  
Other Hand ◽  
The Future ◽  
Music Tradition

This paper explores Arnold Schoenberg’s curious ambivalence towards Haydn. Schoenberg recognized Haydn as an important figure in the German serious music tradition, but never closely examined or clearly articulated Haydn’s influence and import on his own musical style and ethos, as he did with many other major composers. This paper argues that Schoenberg failed to explicitly recognize Haydn as a major influence because he saw Haydn as he saw himself, namely as a somewhat ungainly, paradoxical figure, with one foot in the past and one in the future. In his voluminous writings on music, Haydn is mentioned by Schoenberg far less frequently than Bach, Mozart, or Beethoven, and his music appears rarely as examples in Schoenberg’s theoretical texts. When Schoenberg does talk about Haydn’s music, he invokes — with tacit negativity — its accessibility, counterpoising it with more recondite music, such as Beethoven’s, or his own. On the other hand, Schoenberg also praises Haydn for his complex, irregular phrasing and harmonic exploration. Haydn thus appears in Schoenberg’s writings as a figure invested with ambivalence: a key member of the First Viennese triumvirate, but at the same time he is curiously phantasmal, and is accorded a peripheral place in Schoenberg’s version of the canon and his own musical genealogy.

Economic Performance and Public Finance in Kenya, 1960-2010

2018 ◽  
Vol 47 (2) ◽  
Author(s):  
Kempe Ronald Hope
Keyword(s):  
Public Finance ◽  
Economic Performance ◽  
Emerging Economy ◽  
The Other ◽  
Government Investment ◽  
The Past ◽  
Other Hand ◽  
Private Savings ◽  
Per Capita ◽  
Real Growth

Countries with positive per capita real growth are characterised by positive national savings—including government savings, increases in government investment, and strong increases in private savings and investment. On the other hand, countries with negative per capita real growth tend to be characterised by declines in savings and investment. During the past several decades, Kenya’s emerging economy has undergone many changes and economic performance has been epitomised by periods of stability, decline, or unevenness. This article discusses and analyses the record of economic performance and public finance in Kenya during the period 1960‒2010, as well as policies and other factors that have influenced that record in this emerging economy. 

Wilfred Ethier. Modern International Economics. New York: W. W. Norton and Company. 1983. xviii + 588 pp.

1988 ◽  
Vol 27 (1) ◽  
pp. 81-83
Author(s):  
Nadeem A. Burney
Keyword(s):  
International Economic ◽  
New York ◽  
Economic Theory ◽  
International Economics ◽  
International Monetary System ◽  
International Markets ◽  
The Past ◽  
Monetary System ◽  
Recent Developments

Its been long recognized that various economies of the world are interlinked through international trade. The experience of the past several years, however, has demonstrated that this economic interdependence is far greater than was previously realized. In this context, the importance of international economic theory as an area distinct from general economics hardly needs any mentioning. What gives international economic theory this distinction is international markets for some goods and effects of national sovereignty on the character of economic activity. Wilfred Ethier's book, which incorporates recent developments in the field, is an excellent addition to textbooks on international economics for one- or twosemester undergraduate courses. The book mostly covers standard topics. A distinguishing feature of this book is its detailed analysis of the flexible exchange rates and a discussion of the various approaches used for their determination. Within each chapter, the author has extensively used facts, figures and major events to clarify the concepts in the light of the theoretical framework. The book also discusses, in a fair amount of detail, the existing international monetary system and the role of various international organizations.

Vom Forst zum Wald. Entwicklungstendenzen im naturnahen Waldbau | From a Production-Oriented Forest to a Multipurpose Forest. New Trends in Near-Natural Silviculture

1999 ◽  
Vol 150 (12) ◽  
pp. 484-488 ◽  
Author(s):  
Wolf Hockenjos
Keyword(s):  
Forest Management ◽  
Timber Harvest ◽  
Timber Harvesting ◽  
Natural Forest ◽  
The Other ◽  
Private Forest ◽  
Wide Spread ◽  
Great Demand ◽  
The Past ◽  
Forest Enterprises

Concepts of near-natural forestry are in great demand these days. Most German forest administrations and private forest enterprises attach great importance to being as «near-natural» as possible. This should allow them to make the most of biological rationalisation. The concept of near-natural forestry is widely accepted, especially by conservationists. However, it is much too early to analyse how successful near-natural forestry has been to date, and therefore to decide whether an era of genuine near-natural forest management has really begun. Despite wide-spread recognition, near-natural forestry is jeopardised by mechanised timber harvesting, and particularly by the large-timber harvester. The risk is that machines, which are currently just one element of the timber harvest will gain in importance and gradually become the decisive element. The forest would then be forced to meet the needs of machinery, not the other way round. Forests would consequently become so inhospitable that they would bear no resemblance to the sylvan image conjured up by potential visitors. This could mean taking a huge step backwards: from a near-natural forest to a forest dominated by machinery. The model of multipurpose forest management would become less viable, and the forest would become divided into areas for production, and separate areas for recreation and ecology. The consequences of technical intervention need to be carefully considered, if near-natural forestry is not to become a thing of the past.

TARP DVIEJŲ KOLONŲ: XVIII A. PABAIGOS – XIX A. PRADŽIOS VILNIAUS MASONŲ KASDIENYBĖ SIMBOLIKOJE

2018 ◽  
pp. 144-163
Author(s):  
Daiva Milinkevičiūtė
Keyword(s):  
Daily Life ◽  
The Other ◽  
Daily Routine ◽  
The Past ◽  
Secular World ◽  
National Characteristics ◽  
Conservative Christian ◽  
The Subject ◽  
The One ◽  
Craft Guilds

The Age of Enlightenment is defined as the period when the universal ideas of progress, deism, humanism, naturalism and others were materialized and became a golden age for freemasons. It is wrong to assume that old and conservative Christian ideas were rejected. Conversely, freemasons put them into new general shapes and expressed them with the help of symbols in their daily routine. Symbols of freemasons had close ties with the past and gave them, on the one hand, a visible instrument, such as rituals and ideas to sense the transcendental, and on the other, intense gnostic aspirations. Freemasons put in a great amount of effort to improve themselves and to create their identity with the help of myths and symbols. It traces its origins to the biblical builders of King Solomon’s Temple, the posterity of the Templar Knights, and associations of the medieval craft guilds, which were also symbolical and became their link not only to each other but also to the secular world. In this work we analysed codified masonic symbols used in their rituals. The subject of our research is the universal Masonic idea and its aspects through the symbols in the daily life of the freemasons in Vilnius. Thanks to freemasons’ signets, we could find continuity, reception, and transformation of universal masonic ideas in the Lithuanian freemasonry and national characteristics of lodges. Taking everything into account, our article shows how the universal idea of freemasonry spread among Lithuanian freemasonry, and which forms and meanings it incorporated in its symbols. The objective of this research is to find a universal Masonic idea throughout their visual and oral symbols and see its impact on the daily life of the masons in Vilnius. Keywords: Freemasonry, Bible, lodge, symbols, rituals, freemasons’ signets.

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