scholarly journals An historical framework for psychiatric nosology

2009 ◽  
Vol 39 (12) ◽  
pp. 1935-1941 ◽  
Author(s):  
K. S. Kendler
Keyword(s):  
Psychiatric Illness ◽  
Theoretical Orientation ◽  
A Priori ◽  
Early History ◽  
Top Down ◽  
Species Definition ◽  
Psychiatric Nosology ◽  
Bottom Up ◽  
Starting Point ◽  
History Of

This essay, which seeks to provide an historical framework for our efforts to develop a scientific psychiatric nosology, begins by reviewing the classificatory approaches that arose in the early history of biological taxonomy. Initial attempts at species definition used top-down approaches advocated by experts and based on a few essential features of the organism chosena priori. This approach was subsequently rejected on both conceptual and practical grounds and replaced by bottom-up approaches making use of a much wider array of features. Multiple parallels exist between the beginnings of biological taxonomy and psychiatric nosology. Like biological taxonomy, psychiatric nosology largely began with ‘expert’ classifications, typically influenced by a few essential features, articulated by one or more great 19th-century diagnosticians. Like biology, psychiatry is struggling toward more soundly based bottom-up approaches using diverse illness characteristics. The underemphasized historically contingent nature of our current psychiatric classification is illustrated by recounting the history of how ‘Schneiderian’ symptoms of schizophrenia entered into DSM-III. Given these historical contingencies, it is vital that our psychiatric nosologic enterprise be cumulative. This can be best achieved through a process of epistemic iteration. If we can develop a stable consensus in our theoretical orientation toward psychiatric illness, we can apply this approach, which has one crucial virtue. Regardless of the starting point, if each iteration (or revision) improves the performance of the nosology, the eventual success of the nosologic process, to optimally reflect the complex reality of psychiatric illness, is assured.

scholarly journals Text as Discourse: The Chinese in Canada in Historiographical Perspective

2008 ◽  
Vol 11 ◽  
Author(s):  
Samantha J Scot
Keyword(s):  
Public Policy ◽  
British Columbia ◽  
Top Down ◽  
Bottom Up ◽  
History Of ◽  
Historical Representations ◽  
Denise Chong ◽  
Compare And Contrast

As a historiographical analysis, this essay seeks to understand the idea of historical layering through the topic of Chinese immigration to Canada. It considers the following four works: In the Sea of Sterile Mountains: The Chinese in British Columbia (1974) by James Morton, White Canada Forever: Popular Attitudes and Public Policy Toward Orientals in British Columbia (1978) by W Peter Ward, From China to Canada: A History of the Chinese Communities in Canada (1982) by Harry Con et al., and The Concubine's Children (1994) by Denise Chong. It does so in an effort to compare and contrast their approaches with regard to consensus and specialist histories, top-down and bottom-up approaches, as well as passive and active historical representations.

Mapping seabed assemblages using comparative top-down and bottom-up classification approaches

2006 ◽  
Vol 63 (7) ◽  
pp. 1536-1548 ◽  
Author(s):  
Paul D Eastwood ◽  
Sami Souissi ◽  
Stuart I Rogers ◽  
Roger A Coggan ◽  
Craig J Brown
Keyword(s):  
Low Cost ◽  
A Priori ◽  
Ground Truth ◽  
Unsupervised Classification ◽  
Physical Structure ◽  
Unconsolidated Sediments ◽  
Top Down ◽  
Bottom Up ◽  
Infaunal Community ◽  
Acoustic Technologies

Acoustic technologies yield many benefits for mapping the physical structure of seabed environments but are not ideally suited to classifying associated biological assemblages. We tested this assumption using benthic infauna data collected off the south coast of England by applying top-down (supervised) and bottom-up (unsupervised) classification approaches. The top-down approach was based on an a priori acoustic classification of the seabed followed by characterization of the acoustic regions using ground-truth biological samples. By contrast, measures of similarity between the ground-truth infaunal community data formed the basis of the bottom-up approach to assemblage classification. For both approaches, individual assemblages were mapped by first computing Bayesian conditional probabilities for ground-truth stations to estimate the probability of each station belonging to an assemblage. Assemblage distributions were then interpolated over a regular grid and characterized using an indicator value index. While the two methods of classification yielded assemblages and output maps that were broadly comparable, the bottom-up approach arrived at a slightly better defined set of biological assemblages. This suggests that acoustically derived seabed data are not ideally suited to class ifying biological assemblages over unconsolidated sediments, despite offering considerable advantages in providing rapid and low-cost assessments of seabed physical structure.

Ephoros Book I and the Kings of Argos

1951 ◽  
Vol 1 (1-2) ◽  
pp. 39-45 ◽  
Author(s):  
A. Andrewes
Keyword(s):  
Early History ◽  
Starting Point ◽  
History Of ◽  
Specific Theme

Ephoros is known to have conceived each of his books as a unit with a specific theme, so that where we have any quantity of material it is worth while asking what the theme of a book was supposed to be. Clearly Ephoros i was about the return of the Herakleidai and the early history of the Peloponnese, but that defines the starting-point, not the scope of the book: I propose to argue that he presented here the contrast of the three Heraklid kingdoms, the degeneration and downfall of the Argive and Messenian Heraklids as opposed to the salvation of the Spartan state by Lykourgos.

Trends in Scenario Development Methodologies and Integration in NUMO’s Approach

2010 ◽  
Author(s):  
Takeshi Ebashi ◽  
Katsuhiko Ishiguro ◽  
Keiichiro Wakasugi ◽  
Hideki Kawamura ◽  
Irina Gaus ◽  
...  
Keyword(s):  
Safety Assessment ◽  
International Workshop ◽  
Assessment Process ◽  
Scenario Development ◽  
Top Down ◽  
Initial State ◽  
Bottom Up ◽  
Starting Point ◽  
Consistent Treatment

The development of scenarios for quantitative or qualitative analysis is a key element of the assessment of the safety of geological disposal systems. As an outcome of an international workshop attended by European and the Japanese implementers, a number of features common to current methodologies could be identified, as well as trends in their evolution over time. In the late nineties, scenario development was often described as a bottom-up process, whereby scenarios were said to be developed in essence from FEP databases. Nowadays, it is recognised that, in practice, the approaches actually adopted are better described as top-down or “hybrid”, taking as their starting point an integrated (top-down) understanding of the system under consideration including uncertainties in initial state, sometimes assisted by the development of “storyboards”. A bottom-up element remains (hence the term “hybrid”) to the extent that FEP databases or FEP catalogues (including interactions) are still used, but the focus is generally on completeness checking, which occurs parallel to the main assessment process. Recent advances focus on the consistent treatment of uncertainties throughout the safety assessment and on the integration of operational safety and long term safety.

Differences Between Suicide Victims Who Leave Notes and Those Who Do Not

Crisis ◽  
2012 ◽  
Vol 33 (6) ◽  
pp. 344-349 ◽  
Author(s):  
Antonios Paraschakis ◽  
Ioannis Michopoulos ◽  
Athanassios Douzenis ◽  
Christos Christodoulou ◽  
Filippos Koutsaftis ◽  
...  
Keyword(s):  
Psychiatric Illness ◽  
Psychiatric Hospitalization ◽  
Future Research ◽  
Suicide Method ◽  
Psychological Autopsy ◽  
Residential Status ◽  
Starting Point ◽  
Suicide Note ◽  
History Of ◽  
Using Data

Background: Whether differences exist between those who do leave a suicide note and those who do not has not yet been comprehensively answered. Leaving a suicide note is not a random phenomenon: A minority, varying between 3–42%, of all suicide victims leave a note. Aims: To compare the group of suicide victims who leave notes with the ones who do not, using data from the Athens Department of Forensic Medicine, the largest in Greece. Methods: We examined sex, age, nationality, religious beliefs, marital and residential status, history of prior psychiatric disorder and psychiatric attempt(s), suicide method, physical disease, recent hospitalization, and existence of suicide notes. We completed psychological autopsy questionnaires after phone interviews with relatives of the suicide victims of a 2-year period (November 2007–October 2009). Results: Note writers, 26.1% of our sample, differed in the following: they died by hanging or shooting (p = .007), had no history of psychiatric illness (p < .001) or recent (i.e., within 12 months of the suicide) psychiatric hospitalization (p = .005). Conclusions: Our study showed that there are indeed differences between suicide victims who leave a note and those who do not. We also suggest some explanations for these differences, which could represent a valuable starting point for future research on this topic.

THE FRENCH FOUNDATIONS OF HUTTON’S THEORY OF THE EARTH, PART TWO: HUTTON’S DEBTS TO ROUELLE

2021 ◽  
Vol 40 (2) ◽  
pp. 332-364
Author(s):  
GREGORY F.W. TODD
Keyword(s):  
Eighteenth Century ◽  
A Priori ◽  
Chemistry Teachers ◽  
History Of Geology ◽  
Starting Point ◽  
History Of ◽  
Degree Of Confidence ◽  
New Interpretation ◽  
Almost All ◽  
High Degree

This contribution, in two parts, addresses a long-standing problem in the history of geology: Was the geological theory of James Hutton derived inductively from observations and scientific knowledge, or was it derived a priori as a speculative system? Hutton’s own writings do little to clarify the question, and the conflict in interpretations has remained at an impasse. This contribution proposes to resolve that conflict by focusing on the two years Hutton spent as a young man studying chemistry in Paris. I argue that Hutton studied with one of the great chemistry teachers of the eighteenth century, Guillaume-François Rouelle, and that Rouelle’s teachings provided the foundations of Hutton’s geological theory. Part One of this contribution reviewed evidence that Hutton was a student of Rouelle’s, and concluded with a high degree of confidence, but less than certainty, that Hutton did study with Rouelle. In this Part Two, it is argued that Hutton adopted almost all the geological ideas found in Rouelle’s lectures. This Part Two also proposes a reconstruction of the development of Hutton’s cyclical model of Earth strata, taken as the starting point of his broader theory, to show that it developed from observations and inductions, and his study with Rouelle, and was not developed as an a priori system. That conclusion will require a new interpretation of Hutton’s theory, which should now be understood as part of a continuum of geological knowledge developing during the eighteenth century.

scholarly journals Revolutionary Socialist Internationalism: Rank-and-File Reaction in the USPD

1977 ◽  
Vol 22 (3) ◽  
pp. 329-349 ◽  
Author(s):  
Robert F. Wheeler
Keyword(s):  
Working Class ◽  
International Meeting ◽  
Top Down ◽  
Bottom Up ◽  
Public And Private ◽  
The Public ◽  
The People ◽  
History Of ◽  
Per Se ◽  
Historical Accounts

Historical accounts of the First, Second and Third Internationals, i.e., those organizations that attempted to realize some sort of supranational working-class solidarity, have traditionally been presented in terms of congresses, programs and personalities. Invariably scholars have focused on the public and private debates at this or that international meeting and/or how Marx, Engels, Lenin or some other leading figure influenced or reacted to some specific development. In short, the history of the International has been looked at almost exclusively from the “top down”. There is not anything wrong with this approach per se, but it might be of some value to consider, occasionally at least, the people whom the various Internationals were supposed to be serving, in other words to examine the International not only from the “top down” but also from the “bottom up”.

scholarly journals IN OMNIBUS REGIONIBUS? THE FOURTEEN REGIONS AND THE CITY OF ROME

2020 ◽  
Vol 88 ◽  
pp. 119-150
Author(s):  
Penelope J. Goodman
Keyword(s):  
Conceptual Framework ◽  
Social Identification ◽  
Social Meaning ◽  
Top Down ◽  
Bottom Up ◽  
Fire Services ◽  
History Of ◽  
Working Practices ◽  
The Impact ◽  
The City

Scholarship on the fourteen Augustan regions of Rome has tended to focus on their political and topographical significance. As a result, evidence for their social meaning and their impact on the mindsets and practices of the city's administrators and rulers has been under-exploited. This article seeks to address this lacuna. It begins by reviewing the history of Rome's regions and asking how and where the boundaries of the Augustan regions were recorded, before moving on to consider the impact of the regions on the Romans’ understanding and experiences of their city. This includes examining the evidence for bottom-up social identification with the regions, despite their top-down original creation. The paper also looks at the administrators who worked with the regions (regional magistrates and the food, water and fire services), arguing that the conceptual framework which the regions provided began to shape their working practices. Finally, it demonstrates the existence of a rhetoric of consistent provision across all fourteen regions, propagated especially by the emperors. The findings across all of these areas reveal that it is essential to take the regions and their impact into account when attempting to understand the topography of the city and the lives of its inhabitants.

scholarly journals Inverse modelling of European CH<sub>4</sub> emissions during 2006–2012 using different inverse models and reassessed atmospheric observations

2017 ◽  
Author(s):  
Peter Bergamaschi ◽  
Ute Karstens ◽  
Alistair J. Manning ◽  
Marielle Saunois ◽  
Aki Tsuruta ◽  
...  
Keyword(s):  
A Priori ◽  
Lower Troposphere ◽  
Inverse Modelling ◽  
Top Down ◽  
Data Set ◽  
Bottom Up ◽  
Ch4 Emissions ◽  
In Situ Data ◽  
Inverse Models ◽  
The Impact

Abstract. We present inverse modelling (top-down) estimates of European methane (CH4) emissions for 2006–2012 based on a new quality-controlled and harmonized in-situ data set from 18 European atmospheric monitoring stations. We applied an ensemble of seven inverse models and performed four inversion experiments, investigating the impact of different sets of stations and the use of a priori information on emissions. The inverse models infer total CH4 emissions of 26.7 (20.2–29.7) Tg CH4 yr−1 (mean, 10th and 90th percentiles from all inversions) for the EU-28 for 2006–2012 from the four inversion experiments. For comparison, total anthropogenic CH4 emissions reported to UNFCCC (bottom-up, based on statistical data and emissions factors) amount to only 21.3 Tg CH4 yr−1 (2006) to 18.8 Tg CH4 yr−1 (2012). A potential explanation for the higher range of top-down estimates compared to bottom-up inventories could be the contribution from natural sources, such as peatlands, wetlands, and wet soils. Based on seven different wetland inventories from the Wetland and Wetland CH4 Inter-comparison of Models Project (WETCHIMP) total wetland emissions of 4.3 (2.3–8.2) CH4 yr−1 from EU-28 are estimated. The hypothesis of significant natural emissions is supported by the finding that several inverse models yield significant seasonal cycles of derived CH4 emissions with maxima in summer, while anthropogenic CH4 emissions are assumed to have much lower seasonal variability. Furthermore, we investigate potential biases in the inverse models by comparison with regular aircraft profiles at four European sites and with vertical profiles obtained during the Infrastructure for Measurement of the European Carbon Cycle (IMECC) aircraft campaign. We present a novel approach to estimate the biases in the derived emissions, based on the comparison of simulated and measured enhancements of CH4 compared to the background, integrated over the entire boundary layer and over the lower troposphere. This analysis identifies regional biases for several models at the aircraft profile sites in France, Hungary and Poland.

scholarly journals Reading Theories and Reading Comprehension; Review and Discussed

E-Structural ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. 153-159
Author(s):  
Herri Susanto
Keyword(s):  
Reading Comprehension ◽  
Schema Theory ◽  
History Of Reading ◽  
Top Down ◽  
Bottom Up ◽  
Reading Abilities ◽  
History Of ◽  
Theoretical Stage ◽  
Models Of Reading ◽  
Reading Models

Abstract. In this article, several reading theories need to be reviewed in their relationships to read understanding educators and English lecturers. Three other Reading Models, Bottom-Up, Top-Down, and Interactive, are discussed in the Schema Theory at the theoretical stage. The history of reading training, kinds and purposes of reading, and cognitive reading abilities will be discussed in checking the reading understanding. Finally, it reviews six variables that are engaged in understanding English texts.Keywords: comprehension, models of reading, schema theoryAbstrak. Dalam artikel ini, beberapa teori bacaan perlu ditinjau dalam hubungannya untuk membaca pemahaman para pendidik dan dosen bahasa Inggris. Tiga Model Membaca diantaranyamodel Bottom-Up, Top-Down, dan Interactive dibahas dalam Schema Theory pada tahap teoretis. Rentetan uji coba, jenis dan tujuan membaca, serta kemampuan membaca kognitif dibahas dalam memastikan pemahaman membaca. Akhirnya, terdapat review terhadap enam variabel yang terlibat dalam memahami teks bahasa Inggris.Kata kunci: membaca, model membaca, teori schema

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