A North American Historical Review of Three-Axle Freight Trucks

Author(s):  
William Shust ◽  
Michael M. Palmieri

Abstract At first glance, it seems appealing to suggest additional wheelsets under a given railcar type. From the track’s viewpoint, and in a simplistic analysis, trading a particular car’s four-axles for the use of six should allow half again more car weight. This paper will examine efforts to test this concept over the past century. Indeed, the railway marketplace has investigated the three-axle truck in both the freight and passenger car arenas multiple times over the past century. Except in heavy-duty flatcars, the record shows that each implementation has proven to be only temporary. In general, three-axle freight trucks were developed for use with steam locomotive tenders in the early 20th century. These designs were then adapted to other car types over several decades, involving thousands of individual cars. Today, three-axle trucks are nearly extinct. This paper will address the history and status of three-axle freight trucks (or bogies) as used in North American railcar operations. Various past 20th-century applications will be discussed. International efforts will be reviewed as well. The very limited and remaining current usage of three-axle trucks is also discussed.

2008 ◽  
Vol 14 ◽  
pp. 41-53
Author(s):  
David Sepkoski

From the beginning of paleontology's existence as a distinct professional community in the early 20th century, paleontologists have argued about ‘where’ the discipline fits among the natural sciences. Long told that paleontologists ought to be content with a subsidiary role as mere documenters of evolutionary change or as stratigraphical ‘handmaidens' to geology, over the past hundred years many paleontologists have actively resisted restrictive pigeonholing and attempted to establish paleontology as an autonomous discipline with status equal to its cousins biology and geology. This essay will survey some of the efforts at paleontological ‘activism’ over the past century, focusing particularly on institutional placement, intellectual contributions, and the use of arguments about the adequacy of the fossil record to bolster claims for disciplinary status.


2020 ◽  
Vol 24 (2) ◽  
pp. 276-285
Author(s):  
Anastasia A. Volkova

Today, the dialogue is regarded as a basis for cultural being, while the dialogue of cultures has become a key notion in modern philosophical thinking. The concept of dialogue has been transformed over the past century, acquiring new meanings and changing its internal content from understanding it as an ordinary exchange of information to a complex creative interaction and mutual influence of different cultural and value consciousnesses. Not only different personalities, but entire ethnoses, cultures, and civilizations may become subjects of the dialogue, thus increasing the dialogue functionality up to the means of developing inter-cultural, inter-ethnic and inter-civilizational relations and accentuating commonality of the global historic process and cultural heritage of mankind. Appearing as a form of interpersonal relations in the ontology of M. Buber, who was one of the first to focus on the transition of relations from "subject-object" to "subject-subject", the concept of "dialogue" has become an important philosophical concept throughout the mid-XX century. Brand new turn of development of the theory of dialogue, and the entire human culture in General, was due to the concept of Semiosphere Yu.М. Lotman. The article deals with genesis of the philosophical concept of the dialogue between cultures in the 20th century. The focus is on its emergence - in the early 20th century - in M. Buber's theological concept and at the highest point of its development in Yu. M. Lotman’s semiotic philosophy.


2012 ◽  
Vol 8 (4) ◽  
pp. 1169-1175 ◽  
Author(s):  
J. Liu ◽  
M. Song ◽  
Y. Hu ◽  
X. Ren

Abstract. Recent studies demonstrate that the Hadley Circulation has intensified and expanded for the past three decades, which has important implications for subtropical societies and may lead to profound changes in global climate. However, the robustness of this intensification and expansion that should be considered when interpreting long-term changes of the Hadley Circulation is still a matter of debate. It also remains largely unknown how the Hadley Circulation has evolved over longer periods. Here, we present long-term variability of the Hadley Circulation using the 20th Century Reanalysis. It shows a slight strengthening and widening of the Hadley Circulation since the late 1970s, which is not inconsistent with recent assessments. However, over centennial timescales (1871–2008), the Hadley Circulation shows a tendency towards a more intense and narrower state. More importantly, the width of the Hadley Circulation might have not yet completed a life-cycle since 1871. The strength and width of the Hadley Circulation during the late 19th to early 20th century show strong natural variability, exceeding variability that coincides with global warming in recent decades. These findings raise the question of whether the recent change in the Hadley Circulation is primarily attributed to greenhouse warming or to a long-period oscillation of the Hadley Circulation – substantially longer than that observed in previous studies.


2021 ◽  
Vol 201 (3) ◽  
pp. 534-545
Author(s):  
Janusz Zuziak

Lviv occupies a special place in the history of Poland. With its heroic history, it has earned the exceptionally honorable name of a city that has always been faithful to the homeland. SEMPER FIDELIS – always faithful. Marshal Józef Piłsudski sealed that title while decorating the city with the Order of Virtuti Militari in 1920. The past of Lviv, the always smoldering and uncompromising Polish revolutionist spirit, the climate, and the atmosphere that prevailed in it created the right conditions for making it the center of thought and independence movement in the early 20th century. In the early twentieth century, Polish independence organizations of various political orientations were established, from the ranks of which came legions of prominent Polish politicians and military and social activists.


2009 ◽  
Vol 1 (1) ◽  
pp. 124-132
Author(s):  
Anna Georgievna Lukashova

In this article a new method of analysis of S. Paradzhanov's creative work is suggested: the works of Paradzhanov-artist and Paradzhanov-director are examined as a united paradigm, which gives an opportunity to present the phenomenon of his art in the context of art culture of the 20th century in the most adequate way, and deine the connection of the aesthetics of his work and the basic tendencies of the past century.


Author(s):  
Rimma M. Khaninova ◽  

Introduction. In the genre system of Kalmyk poetry, the literary fable appeared in the 1930s. When it came to master the genre, Kalmyk poets mainly focused on the traditions of Russian fable of the 19th–20th centuries, primarily on I. A. Krylov’s works which they eagerly translated. The Kalmyk authors were the least likely to rely on traditions of Eastern literature — whether Indian, Tibetan, or Oirat Mongolian — since those sources written in Tibetan, Classical Mongolian and Clear Script (Kalm. todo bichiq) were virtually unavailable to them, and not all poets had knowledge of the scripts. National folklore, including myths, animal tales, household tales, aphoristic poetry (proverbs, sayings, riddles), to a certain extent contributed to the creation of plots and motifs, a gallery of images ― people and the animal world ― in the Kalmyk literary fable. The appeal to the fable was determined by the tasks of cultural construction in Kalmykia, the satirical possibilities of the genre designed to scourge social vices and human shortcomings, contribute to the correction of morals, facilitate education of a person in the new society. Attention to the fable in 20th-century Kalmyk poetry was not that universal and constant, by the end of the century it was no longer in demand and never revived further. The Kalmyk literary fable has been little studied so far, with the exception of several recent articles by R. M. Khaninova, which determines the relevance of this study. Goals. The article aims to study zoopoetics of text of the animalistic fable in Kalmyk poetry of the past century through examples of selected works by Khasyr Syan-Belgin, Muutl Erdniev, Garya Shalburov, Basang Dordzhiev, Timofey Bembeev, and Mikhail Khoninov. Methods. The work employs a number of research methods, such as the historical literary, comparative, and descriptive ones. Results. The animalistic fable is not the leading one in the general genre system of Kalmyk poetry of the past century, including among fables with human characters. It usually includes characters of the steppe fauna whose figurative characteristics are manifested in Kalmyk folklore. The social satire and political orientation of the fables are actualized by modern reality, actual international situation and events. The paper reveals a relationship between the animal fable and — Kalmyk folklore and the Russian fable tradition. Most of the fables have not yet been translated into Russian. Conclusions. In terms of national versification patterns, the study of the Kalmyk poetic animal fable has identified such synthetic forms as fable-fairy tale, fable-proverb, and fable-dream. The genre definition is not always specified by the authors, a moral usually concludes each quatrain-structured narrative. Genre scenes, monologues, and dialogues contribute to an in-depth reading of the context, symbolism of images, and semantic code.


2008 ◽  
Vol 11 (3) ◽  
pp. 383-385 ◽  
Author(s):  
EVE ZYZIK ◽  
SUSAN GASS

The five papers in this issue cover a range of perspectives on the acquisition and use of the Spanish copulasserandestarin a variety of contexts, including language contact, bilingual language acquisition, and classroom second language learning. The fact that these papers cite work in this area as far back as the early part of the 20th century with each subsequent decade being represented suggests the continual importance and complexity of the distinction between the two copular forms and shows how this complexity is played out in acquisition and bilingual use. Over the past century different perspectives have been taken on this multifaceted issue with linguistic explanations and the role of the native language being primary. In this epilogue, we focus on some of these same issues, but expand our commentary to include the new dimensions represented in this collection of papers: (i) context of learning (input), (ii) prior knowledge as represented by other language(s) known, (iii) item-learning and lexical development, and (iv) innovations in methodology.


2017 ◽  
Vol 60 (6) ◽  
Author(s):  
Craig W. Schneider ◽  
Christopher T. Flook

AbstractUsing over 10,000 archival herbarium specimens from Bermuda, we compared the presence or absence of seaweeds from a century ago with our more than 5000 collections from the last 30 years. Populations of parrotfish, important herbivores of macroalgae in the tropics, have increased since the 1993 amendment to the Bermuda 1978 Fisheries (Protected Species) Order. A fish pot ban for Bermuda was put into effect in 1990 to protect a variety of fish including parrotfish and several species of grouper, important predators of parrotfish that were rarely seen in island waters at the time. Intertidal grazing West Indian top shells were reintroduced in 1982 to Bermuda, and since then, along with the rise in parrotfish populations, inshore populations of many macroalgae have dramatically changed. We suggest that several large and abundant Bermuda macroalgal species recorded in the early 20th century appear to have been extirpated or are greatly diminished in sizes of individuals as well as population abundance, and propose that marine animal protections over the past 35 years are a possible reason for the changes we are presently observing.


Fisheries ◽  
1989 ◽  
Vol 14 (6) ◽  
pp. 22-38 ◽  
Author(s):  
Robert R. Miller ◽  
James D. Williams ◽  
Jack E. Williams
Keyword(s):  

1975 ◽  
Vol 35 (3) ◽  
pp. 630-634 ◽  
Author(s):  
Archibald R. Lewis

The problem of how North American medievalists should deal with social and economic history is one which seems to have some importance the present time. Two recent articles in the JOURNAL OF ECONOMIC HISTORY are concerned with this matter. So are two others which have just appeared in the American Historical Review and which, since they examine quantitative history in general, throw light on this problem. Because of this kind of current interest, it was decided to hold a special session devoted to social and economic history at the recent semicentennial anniversary meeting of the Mediaeval Academy of America. This session was preceded by a questionnaire sent to 105 medieval historians of the United States and Canada who represented every field study, every age group, and every geographic area of this continent. Seventy replies were received and a lively discussion took place later at the meeting itself, which some thirty scholars attended. This article represents an attempt to sum up the results of both the survey and the subsequent discussion because it should be of value not only to medievalists but also to a wider body of scholars who share an interest in economic and social history in general.


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