scholarly journals Ear Reconstruction Simulation: From Handcrafting to 3D Printing

2019 ◽  
Vol 6 (1) ◽  
pp. 14 ◽  
Author(s):  
Elisa Mussi ◽  
Rocco Furferi ◽  
Yary Volpe ◽  
Flavio Facchini ◽  
Kathleen S. McGreevy ◽  
...  

Microtia is a congenital malformation affecting one in 5000 individuals and is characterized by physical deformity or absence of the outer ear. Nowadays, surgical reconstruction with autologous tissue is the most common clinical practice. The procedure requires a high level of manual and artistic techniques of a surgeon in carving and sculpting of harvested costal cartilage of the patient to recreate an auricular framework to insert within a skin pocket obtained at the malformed ear region. The aesthetic outcomes of the surgery are highly dependent on the experience of the surgeon performing the surgery. For this reason, surgeons need simulators to acquire adequate technical skills out of the surgery room without compromising the aesthetic appearance of the patient. The current paper aims to describe and analyze the different materials and methods adopted during the history of autologous ear reconstruction (AER) simulation to train surgeons by practice on geometrically and mechanically accurate physical replicas. Recent advances in 3D modelling software and manufacturing technologies to increase the effectiveness of AER simulators are particularly described to provide more recent outcomes.


2007 ◽  
Vol 37 (10) ◽  
pp. 1999-2009 ◽  
Author(s):  
Marie-Christine Fléchard ◽  
Matthew S. Carroll ◽  
Patricia J. Cohn ◽  
Áine Ní Dhubháin

Following centuries of deforestation, Ireland has undergone a substantial afforestation programme in the last 40 years. This paper presents the results of a case study undertaken to examine local response to afforestation. The study is set in Arigna, a region in northwestern Ireland that has traditionally depended on agriculture but has experienced relatively high rates of afforestation in recent decades. Relying on documentary evidence and in-depth qualitative interviews conducted with local stakeholders, the results suggest more local resistance to afforestation than one might expect in a country that has historically experienced such massive deforestation. Among the reasons uncovered for this resistance is the history of land tenure in rural Ireland, the institutional means by which afforestation has been conducted, the tree species used, and the aesthetic appearance of the forest stands once established. Underlying all of this is an apparently widespread local perception that forestry has benefited outsiders more than locals. Yet, the study also documents local perceptions that those responsible for afforestation have responded to concerns and that resistance to afforestation may be declining, as well as the reasons for this decline. The paper concludes with a discussion of the importance of local history and community involvement in developing socially acceptable forestry.



2012 ◽  
Vol 45 (01) ◽  
pp. 094-096 ◽  
Author(s):  
Rafi Parnia ◽  
Ladan Ghorbani ◽  
Nariman Sepehrvand ◽  
Sanaz Hatami ◽  
Shahrzad Bazargan-Hejazi

ABSTRACT Background and Aim: The umbilicus plays an important role in the aesthetic appearance of the abdomen. So, its restoration during reconstructive surgeries, such as an abdominoplasty, is a challenge. The aim of this study was to evaluate quantitative indices based on constant skeletal points in the anterior wall of abdomen in order to provide an appropriate site of a neo-umbilicus during an abdominoplasty. Materials and Methods: In this descriptive, cross-sectional study, we enrolled 65 young adult girls (20-25 years old) who were nulliparous, nulligravid, and without any history of surgery. Weight, height, distance from xiphoid to umbilicus (Xu), distance from the pubic symphysis to xiphosternum (Xp), and anterior superior iliac spine (interASIS) distance of the subjects were measured. Data were analysed by SPSS ver. 16 using descriptive statistics and multiple regression tests in order to present a formula (equation). Results: Mean age was 22.74 ± 1.51 years, mean weight 54.98 ± 6.51 kg, mean height 160.91 ± 4.11 cm and body mass index (BMI) was calculated to be 21.25 ± 2.61 kg/m 2 . Mean Xp distance was 32.26 ± 2.23 cm and mean Xu distance was 17.11 ± 1.64 cm. Xu/Xp ratio (ratio of umbilicoxiphoid distance to puboxiphoid distance) was 53.06 ± 3.9%. Data were analysed using multiple regression test and likelihood ratio. The formula used in determining the appropriate site of neo-umbilicus during abdominoplasty was suggested: Xu=−0.98 + 0.91Xp − 0.07H. Conclusion: By applying these quantitative methods, the natural site of neo-umbilicus could be determined. This may reduce practice errors and increase patient satisfaction. In addition, these findings provide plausible evidence to defend against possible legal complaints.



1993 ◽  
Vol 22 (450) ◽  
Author(s):  
Gudmund Skovbjerg Frandsen ◽  
Jens Palsberg ◽  
Erik Meineche Schmidt ◽  
Steen Sjøgaard

<p>We design a system for generating newspaper layout proposals. The input to the system consists of editorial information (text, pictures, etc) and style information (non-editorial information that specifies the aesthetic appearance of a layout). We consider the automation of layout construction to pose two main problems. One problem consists in optimizing the layout with respect to the constraints and preferences specified in the style information. Another problem consists in finding a representation of the style information that both supports its use in the combinatorial optimization and supports its modification through high level user interaction and automatic inference from a database of examples.</p><p> </p><p>We propose a solution that combines <em> heuristic search, randomization </em> and <em> neural networks.</em> We have implemented a first version based on the <var> bisection </var> strategy -- a page is bisected recursively until the number of sub-divisions matches the number of articles to be placed.</p>



2021 ◽  
pp. 074880682110440
Author(s):  
Scott Bueno ◽  
Blake Nguyen Lam ◽  
Mohammed Al-Obaidi ◽  
Thomas Schlieve

This case report demonstrates the usage of a bioabsorbable nasal implant (BNI) in conjunction with an aesthetic septorhinoplasty. The authors uniquely chose to use this allograft due to inadequate autologous tissue secondary to previously performed temporomandibular joint arthroplasties. In addition to evaluating our case of a 22-year-old woman who received a BNI with an aesthetic septorhinoplasty, the authors performed a comprehensive literature review on the topic. Spanning 3 databases (Scopus, PubMed, and Cochrane), this review revealed 4 primary studies, totaling 349 patients. Each utilized nasal obstruction symptom evaluation (NOSE) scores to subjectively measure symptomatic improvement. We chose to use the NOSE questionnaire on our patient both preoperatively and postoperatively, in order to help demonstrate subjective improvement. The patient’s functional and aesthetic concerns were addressed in the operating room at Parkland Memorial Hospital under general anesthesia. Notably, the patient had previously had conchal cartilage harvested bilaterally, had insufficient septal cartilage for adequate grafting, and did not desire to undergo costal cartilage harvest. Therefore, all parties agreed to use a BNI to complete the functional component of the patient’s septorhinoplasty. This day-surgery first focused on the aesthetic septorhinoplasty followed by the placement of the BNI bilaterally. Following an uneventful postoperative course, our patient endorsed not only an aesthetic improvement but also an 88% functional improvement based on her NOSE score within 4 months of surgery. The authors were able to successfully integrate functional as well as aesthetic septorhinoplasty techniques under the constraints of having both limited autologous tissue and limited accepted options from the patient. For the patient and provider team, this newer allograft was confirmed to be effective and efficient. With the correct patient selection, this is an excellent adjunct procedure that can be quickly and safely performed either in conjunction with surgical rhinoplasty or as a standalone procedure by facial surgeons.



2020 ◽  
pp. 49-61
Author(s):  
V. A. Sidorov ◽  
E. V. Oshovskaya

The article continues to discuss the history of foundry production — bell casting (the beginning is in No. 9). The art of foundry was passed down from generation to generation. The authors analyzed in detail the variety of bell products, materials, and manufacturing technologies. The complexity of the technological production of slotted bells makes them unique, individual products that confirm the high level of the master»s skill. The loss of sound properties of slotted bells depends on the ratio of the main dimensions, the size of the slots and their locations. The use of complementary methods for measuring mechanical and visualizing sound vibrations allows obtaining initial data for the development of a mathematical model of sound vibrations of a bell.



Migration and Modernities recovers a comparative literary history of migration by bringing together scholars from the US and Europe to explore the connections between migrant experiences and the uneven emergence of modernity. The collection initiates transnational, transcultural and interdisciplinary conversations about migration in the eighteenth and nineteenth centuries, demonstrating how mobility unsettles the geographic boundaries, temporal periodization, and racial categories we often use to organize literary and historical study. Migrants are by definition liminal, and many have existed historically in the spaces between nations, regions or ethnicities. In exploring these spaces, Migration and Modernities also investigates the origins of current debates about belonging, rights, and citizenship. Its chapters traverse the globe, revealing the experiences — real or imagined — of eighteenth- and nineteenth-century migrants, from dispossessed Native Americans to soldiers in South America, Turkish refugees to Scottish settlers. They explore the aesthetic and rhetorical frameworks used to represent migrant experiences during a time when imperial expansion and technological developments made the fortunes of some migrants and made exiles out of others. These frameworks continue to influence the narratives we tell ourselves about migration today and were crucial in producing a distinctively modern subjectivity in which mobility and rootlessness have become normative.



2008 ◽  
Vol 1 (2) ◽  
pp. 139-155 ◽  
Author(s):  
YAEL DARR

This article describes a crucial and fundamental stage in the transformation of Hebrew children's literature, during the late 1930s and 1940s, from a single channel of expression to a multi-layered polyphony of models and voices. It claims that for the first time in the history of Hebrew children's literature there took place a doctrinal confrontation between two groups of taste-makers. The article outlines the pedagogical and ideological designs of traditionalist Zionist educators, and suggests how these were challenged by a group of prominent writers of adult poetry, members of the Modernist movement. These writers, it is argued, advocated autonomous literary creation, and insisted on a high level of literary quality. Their intervention not only dramatically changed the repertoire of Hebrew children's literature, but also the rules of literary discourse. The article suggests that, through the Modernists’ polemical efforts, Hebrew children's literature was able to free itself from its position as an apparatus controlled by the political-educational system and to become a dynamic and multi-layered field.



2014 ◽  
pp. 126-136
Author(s):  
Аndrey G. Velikanov

Considers the aspects of architecture as a language able to express the current state and to prophetically indicate the upcoming changes. The aesthetic value of a construction cannot be perceived just as a separate entity, but it can be cognized in the context and not only a visual one, in space. It is necessary to see the entire complex of the accompanying phenomena, all the flow of the unfolding metaphors and values. In the model in view the figure of the author-creator must be reconsidered as no longer conforming to today's reality. The development of the Stalinist Empire style, as well as its transformations, is considered as one of the specific phenomena in the history of well-known constructions



The paper is a review on the textbook by A. V. Yeremin, «The History of the National Prosecutor’s office» and the anthology «The Prosecutor’s Office of the Russian Empire in the Documents of 1722–1917» (authors: V. V. Lavrov, A. V. Eremin, edited by N. M. Ivanov) published at the St. Petersburg Law Institute (branch) of the University of the Prosecutor’s office of the Russian Federation in 2018. The reviewers emphasize the high relevance and high level of research, their theoretical and practical significance. The textbook and the anthology will help the students increase their legal awareness, expand their horizons.



Author(s):  
Nadiia Kulesha

The centenary of the Ukrainian Revolution (1917―1921s) made relevant the interest to the developments and the personalities of that time, specifically, to the personality of the President of the ZUNR, Petrushevych, Yevhen. The newspaper «Ukrayinskyi Prapor» founded in 1919 in Vienna, throughout its existence, was considered as an official print organ of the Dictator (i.e., Y. Petrushevych). The Vienna period of this publication lasted from August 1919 to mid-November 1923. From the end of November 1923 till April 1932, the paper was published in the capital of the Weimar Republic, Berlin. It was the only newspaper of the Ukrainian emigration published for the longest time in interwar Germany. It was an example of a socio-political periodical. There collaborated outstanding editors and publicists. The pages of this paper record the history of the diplomatic struggle of the West Ukrainian foreign representatives for the liberation of the Eastern Galicia from the protectorate of Poland and the restoration of Ukrainian statehood. Its materials documented the course of the occupation of the Eastern Galicia by Poland and the process of «Polonization» of the Ukrainian population of that region. The article explores the Berlin period of existence of the magazine. Specifically, it studies the changes in the ideological line of the magazine, more specifically, its pro-Soviet editorial orientation because of the illusions about the transformation of the national policy of the Soviet rule in Ukraine, especially during the period of Ukrainization. Then the traditional headings of the magazine were joined by the publications with positive coverage of the flourishing Ukrainianization in Soviet Ukraine. The newspaper also actively reacted to the SVU (Union for Liberation of Ukraine) trial in Kharkiv, justifying the position of the Soviet authorities. The paper’s editorial staff were well-known figures of Ukrainian politics, science, and culture: Yu. Bachynsky, O. Hrytsai, A. Zhuk, M. Lozynsky, R. Perfetsky, and others. They provided a high level of editorial content with high-quality, multifaceted texts. We conclude that in terms of the editorial content and formal aspects, the newspaper «Ukrayinskyi Prapor» matched the standards of the European mainstream press of that time.



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