The Segmental Preservation Rhinoplasty: The Split Tetris Concept

2020 ◽  
Author(s):  
Jose Carlos Neves ◽  
Diego Arancibia Tagle ◽  
Wilson Dewes ◽  
Mario Ferraz
Keyword(s):  
Trauma Surgery ◽  
Nasal Dorsum ◽  
Anatomical Structures ◽  
Aesthetic Result ◽  
Minimal Trauma ◽  
New Ideas ◽  
The Subject ◽  
Nasal Pyramid ◽  
The Aesthetic ◽  
The Stability

AbstractDorsal preservation rhinoplasty has seen considerable advances in the recent years as many doctors have improved and developed new ideas on the subject. In the era of minimal trauma surgery, it is important to achieve a beautiful nasal aesthetic result with minimum injury to the nose. Preserving the main structures of the nasal pyramid has been pursued for more than a century, and some different approaches have been described and developed since then. Their strengths and weakness have been shown. The present society's demand for perfection is an added reason for improving the stability and predictability of preservation rhinoplasty. We describe a brand-new philosophy of approaching the nasal dorsum hump that combines both safety and delicacy in dealing with the anatomical structures with elegancy and accuracy and achieving the aesthetic goal required.

Nasal Dorsum Reduction Simultaneous to Orthognathic Surgery: A Proof-of-Concept Report

2021 ◽  
Author(s):  
Joan Birbe Foraster
Keyword(s):  
Patient Satisfaction ◽  
Orthognathic Surgery ◽  
Nasal Dorsum ◽  
Proof Of Concept ◽  
Le Fort ◽  
Aesthetic Result ◽  
Average Patient ◽  
The Aesthetic ◽  
High Degree ◽  
Le Fort I

AbstractThis report describes a technique to reduce nasal dorsum excess simultaneously to orthognathic surgery (OS) through a Le Fort I osteotomy. It avoids the need to change from endonasal intubation to intraoral intubation. It also eliminates the need to open the dorsum, preserving the integrity of the triangular cartilages at the nasal dorsum keystone area, avoiding iatrogenic nasal dorsum deformities. A sample of five patients referred for OS who also sought improvement of their nasal aesthetics was selected to implement the technique. The aim of this proof-of-concept study was to evaluate the clinical outcome of simultaneous OS and nasal dorsum reduction. The following measurements were used to evaluate the procedure: patient satisfaction with a visual analog scale, photographic assessment, additional operative time, and complications related to the procedure. The average patient age was 23 years (range: 19–32 years). Three patients were women and two were men. In all patients, a high degree of patient satisfaction was observed with the aesthetic result of the nose and OS. No undesirable side effects or surgical complications occurred in any case. Total surgery time was increased by an average of 25 minutes. Nasal dorsum reduction through a Le Fort I approach during OS is a reliable and effective method to reduce nasal dorsum excess in patients seeking simultaneous OS and rhinoplasty.

Bankenwettbewerb und die Stabilität von Finanzsektoren

2021 ◽  
Vol 70 (1) ◽  
pp. 1-36
Author(s):  
Toni Richter
Keyword(s):  
Economic Policy ◽  
Precise Measurement ◽  
Policy Discourse ◽  
Competitive Effect ◽  
Too Big To Fail ◽  
Financial Systems ◽  
The Subject ◽  
State Of Research ◽  
The Stability ◽  
Elementary Basis

Abstract Since the financial crisis of 2008 and intensified during the corona crisis, the interdependence between the stability of the financial systems and the prevailing degree of competition (DC) has been the subject of scientific and economic policy discourse on fragmented markets and „too-big-to-fail“ banks. In theory and empiricism, two fundamentally contrary causal concepts are opposed, the elementary basis of which is the precise measurement of the DC: Competition-stability- versus Fragility-Hypothesis. Based on the recent state of research, it can be shown that alternative DC-Measurements consistently show significantly different competitive conditions and in consequence the evidence for or against a stability-enhancing competitive effect seems to be predetermined by the chosen DC-Measurement.

Adhesion of Fine Particles at Solid/Solution Interfaces

MRS Bulletin ◽  
1990 ◽  
Vol 15 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Nikola Kallay
Keyword(s):  
Fine Particles ◽  
Plane Surface ◽  
Solid Surfaces ◽  
Liquid Media ◽  
Latex Dispersions ◽  
Colloid Particles ◽  
The Subject ◽  
Kinetic Investigations ◽  
The Stability ◽  
Kinetics Of

The adhesion of particles at solid surfaces in liquid media has attracted the attention of scientists because of its various applications as well as the theoretical significance of the processes involved. Early studies were characterized either by poorly defined systems or limited by the properties of a few morphologically well-defined model colloids, such as latex dispersions. Consequently, results were either of semiquantitative nature or were related to some specific cases, which eluded general conclusions. New methods for preparing uniform particles of different compositions, shapes, and sizes make it possible to approach the problem in a more comprehensive manner. For example, to demonstrate difficulties caused by polydispersity, it is sufficient to mention that the electrostatic interaction energy between a plane surface and a particle is approximately proportional to the particle radius, yet the rate of deposition depends exponentially on the height of the energy barrier.In principle, static and dynamic approaches may be employed in the study of particle adhesion. The static method yields the force required to detach an adhered particle, while kinetic investigations of attachment and detachment give the rates of the respective processes. Both methods offer information on the stability of the system in terms of the bond strength of adhered solids. For small colloid particles, which are the subject of thermal random Brownian motion, the dynamic approach is more appropriate. This article emphasizes the kinetics of deposition and detachment of small colloid particles in liquid media.

THE ROLE OF ACCOUNTING AND CONTROL IN THE MANAGEMENT OF ECONOMIC SECURITY OF AN ORGANIZATION

2021 ◽  
Vol 7 (2) ◽  
pp. 165-178
Author(s):  
Nicolay T. Labyntsev ◽  
Lyubov F. SHILOVA ◽  
Ocsana V. Chukhrova
Keyword(s):  
Economic Security ◽  
Accounting Profession ◽  
Economic Management ◽  
Economic Interests ◽  
Doing Business ◽  
The Subject ◽  
The Stability ◽  
High Level ◽  
And Control

This article revises the mission and the name of the accounting profession in the context of strengthening the economic security of enterprises under the conditions of digitalization of the economy. The authors note that in the contemporary conditions of economic management, enterprises should form and ensure the functioning of the economic security of the enterprise at the proper level. The necessity of in-depth research of economic security at microlevel was considered, the factors influencing the stability of the enterprise were highlighted. High level of economic security of the subject of management consists in guaranteeing him maximum effective and stable functioning now and in future. Subjects of economic security were individual enterprises, and objects — their economic interests. The main goals of ensuring economic security of the enterprise in the part of accounting were singled out, the tasks of accounting policy, aimed at ensuring economic security, were determined. The prospects of the accounting profession in the process of ensuring economic security and reliable safe presentation of the results of doing business in reporting are substantiated. The study contains proposals on the revision of requirements for the qualifications of accountants in order to emphasize their activities aimed at strengthening the economic security of the enterprise.

scholarly journals Macroeconomic Modelling at the Institute: Hopes, Challenges and a Lasting Contribution

2018 ◽  
Vol 246 ◽  
pp. R3-R14 ◽  
Author(s):  
Ray Barrell ◽  
Andy Blake ◽  
Garry Young
Keyword(s):  
Global Economy ◽  
Early Years ◽  
Macroeconomic Models ◽  
Macroeconomic Modelling ◽  
New Frontier ◽  
New Ideas ◽  
The Subject ◽  
The Uk ◽  
Economic Forecasts ◽  
Modelling And Forecasting

The Institute is a world leader in macroeconomic modelling and forecasting. It has produced quarterly economic forecasts for around sixty years, supported by macroeconomic models. The aim of the original builders of macroeconomic models was to transform understanding of how economies worked and use that knowledge to improve economic policy. In the early years, when computers were rare, macroeconomic modelling was a new frontier and Institute economists were among the first to produce a working model of the UK economy. It is remarkable how quickly models were being used to produce forecasts, assess policy and influence the international macroeconomic research agenda. The models built at the Institute were mainstream in the sense that they followed the contents of standard macroeconomic textbooks, developed with the subject, and fitted the facts as they were known at the time. There were continual improvements in understanding as the subject developed in response to new ideas and developments in the global economy. This article celebrates the development of macroeconomic modelling at the Institute and the contribution it has made to public life.

“Systems”, Strengths, Weaknesses and Challenges

2017 ◽  
Vol 4 (1) ◽  
pp. 49-59
Author(s):  
Frank Stowell
Keyword(s):  
Action Research ◽  
Systems Thinking ◽  
Research Funding ◽  
Cumulative Effect ◽  
Research Programme ◽  
Common Reason ◽  
New Ideas ◽  
The Subject ◽  
The University

Systems and Cybernetics no longer occupies the position, in academic circles, it once did. There are many reasons why this is the case but a common reason given is the lack of research funding for the subject. The knock-on effect is that the subject has fewer 'champions' and as a consequence is less prominent then it once was. There are many factors that mitigate against research funding for the domain but the cumulative effect is that there are few (if any) new ideas generated now which in turn is having an impact upon the number of academics attracted to it. In this paper the author revisits the action research programme at the University of Lancaster. This project contributed valuable insights into organisational inquiry and the nature of Systems thinking for over 30 years. In this paper the author revisits the programme to discover if there are lessons to be learnt that may be adopted to help provide a means of re-establishing the profile of the domain.

On Looking Backwards

1980 ◽  
Vol 15 (3-4) ◽  
pp. 389-404
Author(s):  
Julius Gould
Keyword(s):  
The Moon ◽  
Scientific Approach ◽  
New Ideas ◽  
The Subject ◽  
Political Structures

THE LAST FIFTEEN YEARS HAVE PASSED WITH SURPRISING speed. They have certainly fulfilled the imperatives of the curse: ‘may you live in interesting times!’. Too much has happened in too many places – on the moon as well as on earth. New movements, new ideas, new cults have emerged. Populations have multiplied and so have inventions. New centres of learning have been established and old ones have been subverted, not least by an overdose of political zeal. The sciences of man have developed – more painfully than was hoped and with fewer concrete results than was (and is) desired. I think we have learned that our efforts to understand complex social and political structures (including those constituted by governments and oppositions) may themselves founder (or flounder) in complexities. Some of those complexities are endemic to the subject of our study; others are the result of our own confusion of categories or of premature conceptualization; others result from overspecialization – and others from the hazards of cross-disciplinary study. Perhaps the cardinal error has been to seek too much – and expect too much – from a narrowly ‘scientific’ approach. We all know of cases on the heads of which one or other of these caps can fit.

1. On Cases of Instability in Open Structures

1888 ◽  
Vol 14 ◽  
pp. 106-106
Author(s):  
E. Sang
Keyword(s):  
Linear Structures ◽  
Symmetric Structure ◽  
Linear Resistance ◽  
Open Structures ◽  
Extensive Class ◽  
The Subject ◽  
The Stability ◽  
Special Case

AbstractIn the course of some remarks on the design proposed for the Forth Bridge, the author of this paper had enunciated the remarkable theorem, that any symmetric structure built on a rectangular base, and depending on linear resistance alone, is necessarily unstable. The proof of it, given in the eleventh volume of the Transactions of the Royal Scottish Society of Arts, is derived from considerations affecting the special case; but this theorem is only one of an extensive class, and therefore the subject of instability among linear structures in general is here taken up.In the case of regular or semi-regular arrangements, having the corners of an upper supported from the corners of an under polygon, it is shown that when the figures are of odd numbers the structures are stable, while those with even numbers are unstable ; unless indeed the polygons be placed conformably, in which case the stability extends to both classes.

scholarly journals Patterns of care: burr-hole cover application for chronic subdural hematoma trepanation

2019 ◽  
Vol 47 (5) ◽  
pp. E14 ◽  
Author(s):  
Julia Velz ◽  
Flavio Vasella ◽  
Kevin Akeret ◽  
Sandra F. Dias ◽  
Elisabeth Jehli ◽  
...  
Keyword(s):  
Patient Satisfaction ◽  
Department Chairs ◽  
Chronic Subdural Hematoma ◽  
Technical Difficulty ◽  
Patterns Of Care ◽  
Burr Hole ◽  
Aesthetic Result ◽  
Skull Defects ◽  
Practice Variations ◽  
The Aesthetic

OBJECTIVESkin depressions may appear as undesired effects after burr-hole trepanation for the evacuation of chronic subdural hematomas (cSDH). Placement of burr-hole covers to reconstruct skull defects can prevent skin depressions, with the potential to improve the aesthetic result and patient satisfaction. The perception of the relevance of this practice, however, appears to vary substantially among neurosurgeons. The authors aimed to identify current practice variations with regard to the application of burr-hole covers after trepanation for cSDH.METHODSAn electronic survey containing 12 questions was sent to resident and faculty neurosurgeons practicing in different parts of the world, as identified by an Internet search. All responses completed between September 2018 and December 2018 were considered. Descriptive statistics and logistic regression were used to analyze the data.RESULTSA total of 604 responses were obtained, of which 576 (95.4%) provided complete data. The respondents’ mean age was 42.4 years (SD 10.5), and 86.5% were male. The sample consisted of residents, fellows, junior/senior consultants, and department chairs from 79 countries (77.4% Europe, 11.8% Asia, 5.4% America, 3.5% Africa, and 1.9% Australasia). Skin depressions were considered a relevant issue by 31.6%, and 76.0% indicated that patients complain about skin depressions more or less frequently. Burr-hole covers are placed by 28.1% in the context of cSDH evacuation more or less frequently. The most frequent reasons for not placing a burr-hole cover were the lack of proven benefit (34.8%), followed by additional costs (21.9%), technical difficulty (19.9%), and fear of increased complications (4.9%). Most respondents (77.5%) stated that they would consider placing burr-hole covers in the future if there was evidence for superiority of the practice. The use of burr-hole covers varied substantially across countries, but a country’s gross domestic product per capita was not associated with their placement.CONCLUSIONSOnly a minority of neurosurgeons place burr-hole covers after trepanation for cSDH on a regular basis, even though the majority of participants reported complaints from patients regarding postoperative skin depressions. There are significant differences in the patterns of care among countries. Class I evidence with regard to patient satisfaction and safety of burr-hole cover placement is likely to have an impact on future cSDH management.

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