Surgical treatment of the humeral head osteochondral defects in chronic shoulder dislocation: Literature review

Background. The shoulder joint is the one most amenable to dislocation. Dislocation of the humeral head is complicated by combined injuries of the shoulder joint, and if the patient does not seek treatment on the first day after the dislocation, irreversible changes in bone and soft tissue structures are formed.The aim of this review was to analyze modern methods of diagnosis and treatment of patients with defects in the articular surfaces of the scapula and humerus head with chronic shoulder dislocations.Material and methods. To search for literature data, we used the electronic databases MEDLINE, PudMed, eLIBRARY with a selection of sources published from 2000 to 2020. The analysis was carried out on works devoted to the diagnosis, surgical treatment and complications of traumatic shoulder dislocations.Results. When analyzing the literature on the surgical treatment of shoulder dislocations, we did not find clear criteria for planning the extent of surgery. The obtained results of surgical treatment testify to well-studied technologies for treating osteochondral defects of the humeral head up to 25 % of its total area. In the presence of a defect of 50 % of humeral head area or more, satisfactory results are shown when carrying out arthroplasty of the joint using a reverse endoprosthesis. However, the treatment of defects ranging in size from 25 to 50 % is still an unexplored problem. There are single techniques using allografts, mainly in English-speaking countries and, to a lesser extent, on the territory of the Russian Federation. Thus, the search for an algorithm for choosing a surgical treatment based on multi-layer spiral computed tomography and/or magnetic resonance imaging data, and the development of a new method of surgical treatment taking into account the obtained data are priority areas in modern traumatology and orthopedics.

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Note on Selection of Coordinate Systems for Geodynamics

International Astronomical Union Colloquium ◽

10.1017/s0252921100051174 ◽

1975 ◽

Vol 26 ◽

pp. 395-407

Author(s):

S. Henriksen

Keyword(s):

Sea Level ◽

The Other ◽

Coordinate Systems ◽

Mean Sea Level ◽

The Earth ◽

The One ◽

Static Systems ◽

Selection Of

The first question to be answered, in seeking coordinate systems for geodynamics, is: what is geodynamics? The answer is, of course, that geodynamics is that part of geophysics which is concerned with movements of the Earth, as opposed to geostatics which is the physics of the stationary Earth. But as far as we know, there is no stationary Earth – epur sic monere. So geodynamics is actually coextensive with geophysics, and coordinate systems suitable for the one should be suitable for the other. At the present time, there are not many coordinate systems, if any, that can be identified with a static Earth. Certainly the only coordinate of aeronomic (atmospheric) interest is the height, and this is usually either as geodynamic height or as pressure. In oceanology, the most important coordinate is depth, and this, like heights in the atmosphere, is expressed as metric depth from mean sea level, as geodynamic depth, or as pressure. Only for the earth do we find “static” systems in use, ana even here there is real question as to whether the systems are dynamic or static. So it would seem that our answer to the question, of what kind, of coordinate systems are we seeking, must be that we are looking for the same systems as are used in geophysics, and these systems are dynamic in nature already – that is, their definition involvestime.

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Costumes and Choreography from Bodenwieser's Trunk: The Coat as Affective Memory

Dance Research ◽

10.3366/drs.2019.0255 ◽

2019 ◽

Vol 37 (1) ◽

pp. 89-110

Author(s):

Rachel Fensham

Keyword(s):

Modern Dance ◽

Human Condition ◽

Personal Life ◽

Creative Thought ◽

Cain And Abel ◽

Embodied Research ◽

The Many ◽

The One ◽

Material Evidence ◽

Selection Of

The Viennese modern choreographer Gertrud Bodenwieser's black coat leads to an analysis of her choreography in four main phases – the early European career; the rise of Nazism; war's brutality; and postwar attempts at reconciliation. Utilising archival and embodied research, the article focuses on a selection of Bodenwieser costumes that survived her journey from Vienna, or were remade in Australia, and their role in the dramaturgy of works such as Swinging Bells (1926), The Masks of Lucifer (1936, 1944), Cain and Abel (1940) and The One and the Many (1946). In addition to dance history, costume studies provides a distinctive way to engage with the question of what remains of performance, and what survives of the historical conditions and experience of modern dance-drama. Throughout, Hannah Arendt's book The Human Condition (1958) provides a critical guide to the acts of reconstruction undertaken by Bodenwieser as an émigré choreographer in the practice of her craft, and its ‘materializing reification’ of creative thought. As a study in affective memory, information regarding Bodenwieser's personal life becomes interwoven with the author's response to the material evidence of costumes, oral histories and documents located in various Australian archives. By resurrecting the ‘dead letters’ of this choreography, the article therefore considers how dance costumes offer the trace of an artistic resistance to totalitarianism.

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PROMETHEE-based ranking of project managers based on the five personality traits

Kybernetes ◽

10.1108/k-10-2018-0551 ◽

2019 ◽

Vol 49 (4) ◽

pp. 1083-1102

Author(s):

Georgios N. Aretoulis ◽

Jason Papathanasiou ◽

Fani Antoniou

Keyword(s):

Personality Traits ◽

Questionnaire Survey ◽

Multicriteria Decision Making ◽

Project Managers ◽

Preference Ranking ◽

Infrastructure Projects ◽

Public Infrastructure ◽

Content Type ◽

The One ◽

Selection Of

Purpose This paper aims to rank and identify the most efficient project managers (PMs) based on personality traits, using Preference Ranking Organization METHod for Enrichment Evaluations (PROMETHEE) methodology. Design/methodology/approach The proposed methodology relies on the five personality traits. These were used as the selection criteria. A questionnaire survey among 82 experienced engineers was used to estimate the required weights per personality trait. A second two-part questionnaire survey aimed at recording the PMs profile and assess the performance of personality traits per PM. PMs with the most years of experience are selected to be ranked through Visual PROMETHEE. Findings The findings suggest that a competent PM is the one that scores low on the “Neuroticism” trait and high especially on the “Conscientiousness” trait. Research limitations/implications The research applied a psychometric test specifically designed for Greek people. Furthermore, the proposed methodology is based on the personality characteristics to rank the PMs and does not consider the technical skills. Furthermore, the type of project is not considered in the process of ranking PMs. Practical implications The findings could contribute in the selection of the best PM that maximizes the project team’s performance. Social implications Improved project team communication and collaboration leading to improved project performance through better communication and collaboration. This is an additional benefit for the society, especially in the delivery of public infrastructure projects. A lot of public infrastructure projects deviate largely as far as cost and schedule is concerned and this is an additional burden for public and society. Proper project management through efficient PMs would save people’s money and time. Originality/value Identification of the best PMbased on a combination of multicriteria decision-making and psychometric tests, which focus on personality traits.

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Incorporating radiomics into clinical trials: expert consensus on considerations for data-driven compared to biologically driven quantitative biomarkers

European Radiology ◽

10.1007/s00330-020-07598-8 ◽

2021 ◽

Author(s):

Laure Fournier ◽

Lena Costaridou ◽

Luc Bidaut ◽

Nicolas Michoux ◽

Frederic E. Lecouvet ◽

...

Keyword(s):

Clinical Trials ◽

Quantitative Imaging ◽

A Priori ◽

External Validation ◽

Data Driven ◽

Imaging Biomarkers ◽

Clinical Validation ◽

Biological Processes ◽

Imaging Data ◽

Selection Of

Abstract Existing quantitative imaging biomarkers (QIBs) are associated with known biological tissue characteristics and follow a well-understood path of technical, biological and clinical validation before incorporation into clinical trials. In radiomics, novel data-driven processes extract numerous visually imperceptible statistical features from the imaging data with no a priori assumptions on their correlation with biological processes. The selection of relevant features (radiomic signature) and incorporation into clinical trials therefore requires additional considerations to ensure meaningful imaging endpoints. Also, the number of radiomic features tested means that power calculations would result in sample sizes impossible to achieve within clinical trials. This article examines how the process of standardising and validating data-driven imaging biomarkers differs from those based on biological associations. Radiomic signatures are best developed initially on datasets that represent diversity of acquisition protocols as well as diversity of disease and of normal findings, rather than within clinical trials with standardised and optimised protocols as this would risk the selection of radiomic features being linked to the imaging process rather than the pathology. Normalisation through discretisation and feature harmonisation are essential pre-processing steps. Biological correlation may be performed after the technical and clinical validity of a radiomic signature is established, but is not mandatory. Feature selection may be part of discovery within a radiomics-specific trial or represent exploratory endpoints within an established trial; a previously validated radiomic signature may even be used as a primary/secondary endpoint, particularly if associations are demonstrated with specific biological processes and pathways being targeted within clinical trials. Key Points • Data-driven processes like radiomics risk false discoveries due to high-dimensionality of the dataset compared to sample size, making adequate diversity of the data, cross-validation and external validation essential to mitigate the risks of spurious associations and overfitting. • Use of radiomic signatures within clinical trials requires multistep standardisation of image acquisition, image analysis and data mining processes. • Biological correlation may be established after clinical validation but is not mandatory.

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Gradient boosting for linear mixed models

The International Journal of Biostatistics ◽

10.1515/ijb-2020-0136 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Colin Griesbach ◽

Benjamin Säfken ◽

Elisabeth Waldmann

Keyword(s):

Random Effects ◽

Mixed Models ◽

Selection Procedure ◽

Classification Theory ◽

Gradient Boosting ◽

Random Structure ◽

Boosting Algorithm ◽

The One ◽

Biased Estimates ◽

Selection Of

Abstract Gradient boosting from the field of statistical learning is widely known as a powerful framework for estimation and selection of predictor effects in various regression models by adapting concepts from classification theory. Current boosting approaches also offer methods accounting for random effects and thus enable prediction of mixed models for longitudinal and clustered data. However, these approaches include several flaws resulting in unbalanced effect selection with falsely induced shrinkage and a low convergence rate on the one hand and biased estimates of the random effects on the other hand. We therefore propose a new boosting algorithm which explicitly accounts for the random structure by excluding it from the selection procedure, properly correcting the random effects estimates and in addition providing likelihood-based estimation of the random effects variance structure. The new algorithm offers an organic and unbiased fitting approach, which is shown via simulations and data examples.

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Lymphoscintigraphy in breast cancer: a short review about the impact on upper limb after surgical treatment

Brazilian Archives of Biology and Technology ◽

10.1590/s1516-89132008000700014 ◽

2008 ◽

Vol 51 (spe) ◽

pp. 83-89

Author(s):

Anke Bergmann ◽

Juliana Miranda Dutra de Resende ◽

Sebastião David Santos-Filho ◽

Marcelo Adeodato Bello ◽

Juliana Flavia de Oliveira ◽

...

Keyword(s):

Breast Cancer ◽

Surgical Treatment ◽

Current Trend ◽

Surgical Techniques ◽

Short Review ◽

Lymphatic Drainage ◽

Key Words Breast ◽

Axillary Lymphadenectomy ◽

The One ◽

The Impact

Breast cancer is still associated with high mortality rates and one of the most important factors governing long survival is accurate and early diagnosis. In underdeveloped countries, this disease frequently is only detected in advanced stages; however, through mammography, many women have been diagnosed at early stages. In this context, the sentinel lymph node (SLN) technique is associated with less postoperative morbidity compared to axillary lymphadenectomy. Lymphoscintigraphy has emerged as a method for the evaluation of lymphatic drainage chains in various tumours, being both accurate and non invasive. The aim of this work is to present the main aspects which cause controversy about SLN and lymphoscintigraphy and the impact that these procedures have had on lymphedema after surgical treatment for breast cancer. A short review including papers in English, Spanish and Portuguese, available on Lilacs and Medline database, published between January, 2000 and July, 2008 was performed. The key words breast cancer, lymphoscintigraphy, SLN biopsy, lymphedema were used. Various studies have aimed to compare the incidence and prevalence of lymphedema according to the technique used; however, the population subjected to SLN is different from the one with indication for axillary lymphadenectomy regarding staging. Moreover, little is known about long term morbidity since it is a relatively new technique. In conclusion, the development of surgical techniques has permitted to minimize deformities and the current trend is that these techniques be as conservative as possible. Thus, lymphoscintigraphy plays an important role in the identification of SLN, contributing to the prevention and minimization of postoperative complications.

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Sensor, Signal, and Imaging Informatics

Yearbook of Medical Informatics ◽

10.15265/iy-2017-019 ◽

2017 ◽

Vol 26 (01) ◽

pp. 120-124

Author(s):

W. Hsu ◽

S. Park ◽

Charles Kahn

Keyword(s):

Medical Informatics ◽

Scientific Work ◽

Imaging Informatics ◽

Sensor Signal ◽

Imaging Data ◽

Extensive Search ◽

Challenges And Opportunities ◽

Final Selection ◽

Selection Of

Summary Objective: To summarize significant contributions to sensor, signal, and imaging informatics published in 2016. Methods: We conducted an extensive search using PubMed® and Web of Science® to identify the scientific contributions published in 2016 that addressed sensors, signals, and imaging in medical informatics. The three section editors selected 15 candidate best papers by consensus. Each candidate article was reviewed by the section editors and at least two other external reviewers. The final selection of the six best papers was conducted by the editorial board of the Yearbook. Results: The selected papers of 2016 demonstrate the important scientific advances in management and analysis of sensor, signal, and imaging information. Conclusion: The growing volume of signal and imaging data provides exciting new challenges and opportunities for research in medical informatics. Evolving technologies provide faster and more effective approaches for pattern recognition and diagnostic evaluation. The papers selected here offer a small glimpse of the high-quality scientific work published in 2016 in the domain of sensor, signal, and imaging informatics.

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Classifying the “ideal migrant worker”

Focaal ◽

10.3167/fcl.2010.570106 ◽

2010 ◽

Vol 2010 (57) ◽

pp. 79-94 ◽

Cited By ~ 16

Author(s):

Janet McLaughlin

Keyword(s):

Migrant Worker ◽

Global Capitalism ◽

Migration Program ◽

English Speaking ◽

Multiple Levels ◽

Seasonal Agricultural Workers ◽

Seasonal Agricultural Workers Program ◽

Selection Of ◽

The Ideal

This article analyzes the ideology and practice of multi-unit competition that pervades neoliberal subjectivities and produces the “ideal” flexible worker within contemporary global capitalism. It demonstrates how state and capitalist interests converge to influence the selection of the ideal transnational migrant worker, how prospective migrants adapt to these expectations, and the consequences of such enactments, particularly for migrants, but also for the societies in which they live and work. Multiple levels of actors—employers, state bureaucrats, and migrants themselves—collude in producing the flexible, subaltern citizen, which includes constructions and relations of class, race, gender, and nationality/citizenship. The case study focuses on Mexican and Jamaican participants in Canada's Seasonal Agricultural Workers Program, a managed migration program that legally employs circular migrant farmworkers from Mexico and several English-speaking Caribbean countries in Canadian agriculture.

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A comparison of two methods for predicting changes in the distribution of gene frequency when selection is applied repeatedly to a finite population

Genetics Research ◽

10.1017/s0016672300002834 ◽

1969 ◽

Vol 13 (2) ◽

pp. 117-126 ◽

Cited By ~ 3

Author(s):

Derek J. Pike

Keyword(s):

Iterative Procedure ◽

Gene Frequency ◽

Finite Population ◽

Transition Matrices ◽

Single Cycle ◽

Gene Frequencies ◽

Mean And Variance ◽

The Mean ◽

The One ◽

Selection Of

Robertson (1960) used probability transition matrices to estimate changes in gene frequency when sampling and selection are applied to a finite population. Curnow & Baker (1968) used Kojima's (1961) approximate formulae for the mean and variance of the change in gene frequency from a single cycle of selection applied to a finite population to develop an iterative procedure for studying the effects of repeated cycles of selection and regeneration. To do this they assumed a beta distribution for the unfixed gene frequencies at each generation.These two methods are discussed and a result used in Kojima's paper is proved. A number of sets of calculations are carried out using both methods and the results are compared to assess the accuracy of Curnow & Baker's method in relation to Robertson's approach.It is found that the one real fault in the Curnow-Baker method is its tendency to fix too high a proportion of the genes, particularly when the initial gene frequency is near to a fixation point. This fault is largely overcome when more individuals are selected. For selection of eight or more individuals the Curnow-Baker method is very accurate and appreciably faster than the transition matrix method.

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Abraham Lincoln

Transactions of the Royal Historical Society ◽

10.2307/3678027 ◽

1882 ◽

Vol 10 ◽

pp. 312-343

Author(s):

Isaac N. Arnold

Keyword(s):

American History ◽

Abraham Lincoln ◽

The Other ◽

English Speaking ◽

The Republic ◽

English Speaking World ◽

The One

The noblest inheritance we Americans derive from our British ancestors is the memory and example of the great and good men who adorn your history. They are as much appreciated and honoured on our side of the Atlantic as on this. In giving to the English-speaking world Washington and Lincoln we think we repay, in large part, our obligation. Their pre-eminence in American history is recognised, and the republic, which the one founded and the other preserved, has already crowned them as models for her children.

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