Visualization of Geometric Spanner Algorithms

It is easier to understand an algorithm when it can be seen in interactive mode. The current study implemented four algorithms to construct geometric spanners; the path-greedy, gap-greedy, Theta-graph and Yao-graph algorithms. The data structure visualization framework (http://www.cs.usfca.edu/~galles/visualization/) developed by David Galles was used. Two features were added to allow its use in spanner algorithm visualization: support point-based algorithms and export of the output to Ipe drawing software format. The interactive animations in the framework make steps of visualization beautiful and media controls are available to manage the animations. Visualization does not require extensions to be installed on the web browser. It is available at http://cs.yazd.ac.ir/cgalg/AlgsVis/

Аналіз значення стримання соціально-культурного тиску на підлітків з нормальною та надмірною масою тіла під час схуднення і фізичних змін

Topicality. Obesity is a global epidemic. Obesity is on the rise in developing countries due to changes in lifestyle. The Aim of the Research.This study aimed to compare body image problems and social-physical anxiety in obese and normal-weight adolescents by examining the moderating role of cultural social pressure for weight loss and physical change. Method. In this descriptive cross-sectional study, 70 adolescents obese and 72 adolescent girls with normal weight were selected through one-stage cluster sampling from high school students in Mashhad. Data collection and measurement tools included: high-sensitivity portable digital scales, Multidimensional Self-Relationships Questionnaire, Physical Social Anxiety Questionnaire, and Cultural Social Pressure Questionnaire. The groups were matched for education, gender, and age. Data were analyzed using SPSS 22 software. The Results of the Research. Results of multivariate analysis of variance showed that there was a significant difference in body image and physical and social anxiety between obese adolescents and normal weight adolescents. The results also showed that high cultural social pressure for weight loss and physical change has a significant role in increasing physical social anxiety. But it does not have a moderating role in the extent of body image problems and physical social anxiety. Obesity and high cultural social pressure for weight loss and physical change are important factors in increasing body image problems and physical and social anxiety. But cultural social pressure does not mitigate the role of obesity in increasing or decreasing body image problems and physical social anxiety. Conclusions. Therefore, it can be concluded that body image problems in obese individuals are more influenced by their body mass and not by the socio-cultural pressure for weight loss and body change.Актуальность. Ожирение – это глобальная эпидемия. Ожирение растет в развивающихся странах из-за изменений в образе жизни. Цель исследования. Это исследование было нацелено на сравнение проблем с телосложением и социально-физической тревожностью у подростков с ожирением и нормальной массой тела путем изучения сдерживающей роли культурно-социального давления для потери веса и физических изменений. Методы. В этом перекрестном исследовании 70 подростков с ожирением и 72 девочки с нормальным весом были отобраны путем одностадийной кластерной выборки от учащихся старших классов в Мешхеде. Инструменты сбора и измерения данных включали высокочувствительные портативные цифровые весы, вопросник многомерных отношений в себе, вопросник физического социального беспокойства и вопросник культурного социального давления. Группы были сопоставимы по образованию, полу и возрасту. Данные проанализированы с использованием программного обеспе- чения SPSS 22. Результаты исследования. Результаты многомерного дисперсионного анализа показали, что существует значительная разница в телосложении, физической и социальной тревожности у подростков с ожирением и подростков с нормальным весом. Результаты также показали, что высокое социально-культурное давление для сни- жения веса и физических изменений играет важную роль в повышении физической социальной тревожности, но не играет сдерживающей роли в масштабах проблем с телосложением и физической социальной тревожностью. Ожи- рение и высокое социально-культурное давление для снижения веса и физических изменений являются важными факторами в увеличении проблем с социальной, и физической и социальной тревожностью. Но социально- культурное давление не уменьшает роли ожирения в увеличении или уменьшении проблем с телосложением и физической социальной тревожностью. Выводы. Таким образом, можно сделать вывод, что на проблемы с тело- сложением у людей с ожирением больше влияет их масса тела, а не социокультурное давление для потери веса и изменения тела.Актуальність. Ожиріння – це глобальна епідемія. Ожиріння зростає в країнах, що розвиваються через зміни способу життя. Мета дослідження. Це дослідження мало на меті порівняти проблеми з тілобудовою та соціально-фізичну тривожність у підлітків з ожирінням і нормальною вагою, вивчаючи помірковану роль соціального-культурного тиску для схуднення та фізичних змін. Методи. У дослідженні взяло участь 70 підлітків з ожирінням та 72 дівчини-підлітки з нормальною вагою, які були відібрані за допомогою одноетапного кластерного відбору з учнів середньої школи в Мешхеді. У процесі дослідження використано: високочутливі портативні цифрові ваги, багатовимірну анкету щодо взаємо- звʼязків, анкету фізичної соціальної тривоги та анкету культурного соціального тиску. Групи були зіставні за освітою, статтю та віком. Дані аналізували за допомогою програмного забезпечення SPSS22. Результати дослідження. Результати багатофакторного дисперсійного аналізу показали, що існує значна різниця щодо тілобудови та фізичної й соціальної тривожності в підлітків з ожирінням та підлітків із нормальною вагою. Результати також по- казали, що високий соціально-культурний тиск щодо схуднення й фізичних змін відіграє значну роль у збільшенні фізичної соціальної тривожності. Але це не є досить суттєвим у масштабах проблем із тілобудовою та фізичною соціальною тривогою. Ожиріння й високий соціально-культурний тиск для схуднення та фізичних змін є важливими факторами посилення проблем із зображенням тілобудови та фізичною й соціальною тривожністю. Але соціально- культурний тиск не зменшує ролі ожиріння в збільшенні чи зменшенні проблем із тілобудовою та фізичною й соціальною тривожністю. Висновки. Тому можна зробити висновок, що проблеми з тілобудовою в людей з ожирінням більшою мірою впливають на їхню масу тіла, а не на соціокультурний тиск для схуднення та зміни тіла

Preparation and Implementation of Intrahospital Transfer Protocol for Emergency Department Patients to Decrease Unexpected Events

Introduction: Most of the patients hospitalized in the emergency department (ED) are in need of transfer to other hospital wards or paraclinic units. This process is called intrahospital transfer (IHT) that may lead to a wide range of complications known as unexpected events (UE). Objective: In the present study we decided to evaluate the effect of using a pre-designed protocol on decrease of UEs and safety improvement of IHT among patients hospitalized in ED. Method: The present cross-sectional study was carried out in 2016 in the ED of Imam Khomeini Hospital, Tehran, Iran. All patients with triage levels of 1 and 2 who were in need of temporary or permanent transfer to other departments of the studied treatment center based on clinical indication as decided by the in-charge physician were enrolled in the study. This study was conducted in 3 phases of pre-intervention, intervention and post-intervention. Any UE was recorded in first phase. During intervention phase ED-IHT protocol was prepared and implemented. the checklist of complications and UEs during transfer was filled again and pre- and post-intervention results were compared. Results: In this study, 207 patients with the mean age of 58.9 ± 20.6 years were evaluated (61.4% male). Demographic data and baseline characteristics of the studied patients in the phases before and after implementation of the protocol has no significant difference. Overall, before implementation of the protocol out of the 105 studied patients, a total of 35 patients (33.3%) were affected by UE during transfer, but after implementation of the protocol this rate decreased to 11 patients (10.8%) out of the 103 studied patients and this decrease was statistically significant (p < 0.001). Conclusion: Based on the results obtained from this study, it seems that performing the IHT protocol specialized for ED patients has been effective in decreasing UE cases

Preparation and Implementation of Intrahospital Transfer Protocol for Emergency Department Patients to Decrease Unexpected Events

Introduction: Most of the patients hospitalized in the emergency department (ED) are in need of transfer to other hospital wards or paraclinic units. This process is called intrahospital transfer (IHT) that may lead to a wide range of complications known as unexpected events (UE). Objective: In the present study we decided to evaluate the effect of using a pre-designed protocol on decrease of UEs and safety improvement of IHT among patients hospitalized in ED. Method: The present cross-sectional study was carried out in 2016 in the ED of Imam Khomeini Hospital, Tehran, Iran. All patients with triage levels of 1 and 2 who were in need of temporary or permanent transfer to other departments of the studied treatment center based on clinical indication as decided by the in-charge physician were enrolled in the study. This study was conducted in 3 phases of pre-intervention, intervention and post-intervention. Any UE was recorded in first phase. During intervention phase ED-IHT protocol was prepared and implemented. the checklist of complications and UEs during transfer was filled again and pre- and post-intervention results were compared. Results: In this study, 207 patients with the mean age of 58.9 ± 20.6 years were evaluated (61.4% male). Demographic data and baseline characteristics of the studied patients in the phases before and after implementation of the protocol has no significant difference. Overall, before implementation of the protocol out of the 105 studied patients, a total of 35 patients (33.3%) were affected by UE during transfer, but after implementation of the protocol this rate decreased to 11 patients (10.8%) out of the 103 studied patients and this decrease was statistically significant (p < 0.001). Conclusion: Based on the results obtained from this study, it seems that performing the IHT protocol specialized for ED patients has been effective in decreasing UE cases

Numerical simulation of sintered perforated hollow sphere structures (PHSS) to investigate thermal conductivity

This paper investigates the thermal properties of a new type of hollow sphere structures. For this new type, the sphere shell is perforated by several holes in order to open the inner sphere volume and surface. The effective thermal conductivity of perforated sphere structures in several kinds of arrangements is numerically evaluated for different hole diameters. The results are compared to classical configurations without perforation. In the scope of this study, three-dimensional finite element analysis is used in order to investigate simple cubic, body-centered cubic, face-centered cubic and hexagonal unit cell models. A linear behavior was found for the heat conductivity of different hole diameters for several kinds of arrangements when the results are plotted over the average density

Soltaniyeh y Santa Maria del Fiore: ¿una relación histórica?

As one of the earliest human innovations in the architecture of shells, the dome has undergone many changes. This article examines the theory of the Florence Cathedral's(Santa Maria del Fiore) inspiration from the Soltaniyeh Dome of Zanjan. The methodology employed in this research is comparative-descriptive using reliable historical and library sources. A comparative-historical study of 13 domes in Iran(Iranian plateau) and 13 domes in Italy(Eastern Rome Empire) over 2,000 years has examined the evolution of Iranian and Italian domes in terms of construction time and shape. In the next step, the sources that architectural experts have discussed the influence of the dome of Soltaniyeh in Zanjan on the dome of Santa Maria del Fiore have been reviewed. The influence of the golden age of Islam and the achievements of Muslim scholars on the European renaissance in mathematics and geometry has also been explored. The structural similarities, proportions and forms of these two domes show impressive results. It seems that according to historical sources and comparative studies conducted in this study, the dome of Soltaniyeh has a direct impact on the construction of the dome of Santa Maria del Fiore, and the theory first proposed by Professor Sanpaolesi (1972) is conclusive.Como una de las primeras innovaciones humanas en la arquitectura de las conchas, la cúpula ha sufrido muchos cambios. Este artículo examina la teoría de la inspiración de la Catedral de Florencia (Santa Maria del Fiore) de la Cúpula Soltaniyeh de Zanjan. La metodología empleada en esta investigación es comparativa-descriptiva utilizando fuentes históricas y bibliográficas fidedignas. Un estudio histórico comparativo de 13 cúpulas en Irán (meseta iraní) y 13 cúpulas en Italia (Imperio de Roma Oriental) durante 2000 años ha examinado la evolución de las cúpulas iraníes e italianas en términos de tiempo de construcción y forma. En el siguiente paso, se han revisado las fuentes en las que los expertos en arquitectura han discutido la influencia de la cúpula de Soltaniyeh en Zanjan en la cúpula de Santa Maria del Fiore. También se ha explorado la influencia de la edad de oro del Islam y los logros de los eruditos musulmanes en el renacimiento europeo de las matemáticas y la geometría. Las similitudes estructurales, proporciones y formas de estas dos cúpulas muestran resultados impresionantes. Parece que según las fuentes históricas y los estudios comparativos realizados en este estudio, la cúpula de Soltaniyeh tiene un impacto directo en la construcción de la cúpula de Santa Maria del Fiore, y la teoría propuesta por primera vez por el profesor Sanpaolesi (1972) es concluyente

Planning of Sustainable Development Based on Civil Rights in Torkaman Port

Undoubtedly, discussion about stability and sustainable development is meaningless without paying attention to cities and urbanization. Cities are considered as major factors of creating instability in the world. Therefore, according to inherent complexity of cities and various dimensions of their effectiveness, recognition of major and key factors for the sake of achieving to stability of cities seems necessary. The purpose of research is to acquire relatively exact description of condition of urban sustainable development from citizens’ rights point of view. This research is practical from the viewpoint of purpose and descriptive-measurable from the viewpoint of type, which has been done by scope method. Statistical society is all citizens of Torkaman city (48736) that used urban spaces which are effective on stability and instability of city. Sample volume is 381 individuals according to Cochran formula that are selected and studied accidentally. Findings of research show that civil rights identifiers with effectiveness of 0.62 and political identifiers with effectiveness of 0.18 had the most and the least effect on sustainable development of Torkaman port city

Planning of Sustainable Development Based on Civil Rights in Torkaman Port

Undoubtedly, discussion about stability and sustainable development is meaningless without paying attention to cities and urbanization. Cities are considered as major factors of creating instability in the world. Therefore, according to inherent complexity of cities and various dimensions of their effectiveness, recognition of major and key factors for the sake of achieving to stability of cities seems necessary. The purpose of research is to acquire relatively exact description of condition of urban sustainable development from citizens’ rights point of view. This research is practical from the viewpoint of purpose and descriptive-measurable from the viewpoint of type, which has been done by scope method. Statistical society is all citizens of Torkaman city (48736) that used urban spaces which are effective on stability and instability of city. Sample volume is 381 individuals according to Cochran formula that are selected and studied accidentally. Findings of research show that civil rights identifiers with effectiveness of 0.62 and political identifiers with effectiveness of 0.18 had the most and the least effect on sustainable development of Torkaman port city

Numerical simulation of the Lamb wave propagation in honeycomb sandwich panels: A parametric study

a b s t r a c t The paper aims to describe the guided Lamb wave propagation in honeycomb sandwich panels. The application of Lamb waves is a well-known method in modern online structural health monitoring techniques. To analyze the wave propagation in such a complicated geometry with an analytical solution is hardly possible; therefore a dimensional finite element simulation is used. A piezoelectric actuator is used to excite the waves on the sandwich panel surface. The extended model of the honeycomb sandwich panel is consisting of two plate layers and a mid-core layer. In addition, a simplified model is used to reduce the computing costs, where the mid-core of the sandwich panel is replaced by a homogeneous layer. The results from the extended model and the simplified model are in most cases in a good agreement; however the limitations of using the simplified model are discussed. A parametric study is used to show the influence of the geometrical properties of honeycomb plates, the material properties of the skin plates and the loading frequency on the group velocity, the wave length and the energy transmission. Each of these properties provides valuable information to design an efficient health monitoring system. Finally, an experimental test is presented

In-Silico Assessments of Fruticulin-A and Demethylfruticulin-A Isolated from Salvia Species Against Important Anticancer Targets

Background and objectives: Bioactive compounds derived from plants have been used to treat various ailments with minimal adverse effects. The in-silico methods are developed to predict the behavior of drug candidates before performing the in-vitro and in-vivo experiments. In the current study, a computational investigation was conducted to understand the probable mechanisms of two benzoquinone diterpenoids namely fruticulin-A and demethylfruticulin-A isolated from several salvia species by molecular docking and dynamic simulation approaches. Methods: The above mentioned compounds with proven anticancer activity were docked against five selected target proteins that regulate cell proliferation and apoptosis including cyclin-dependent protein kinase 2 (CDK-2), CDK-6, DNA topoisomerases I (topo I), topo II and B-cell lymphoma-2 (Bcl-2) using autodock 4.2. Besides, molecular dynamics simulations were applied to evaluate the stability of the best-docked complexes. Results: Both compounds demonstrated remarkable binding affinity to CDK-2 than the known CDK-2 inhibitor. The trajectory analysis for 50 nanosecond (ns) revealed acceptable RMSD, RMSF and Rg values during the entire molecular dynamic simulation which confirmed the stability of complexes. Conclusion: The results of our study displayed that fruticulin-A and demethylfruticulin-A can be developed as excellent natural product derived CDK-2 inhibitors, and further biological experiments should be performed to confirm their use as an efficient option for treating cancer disease