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Retinopathy of Prematurity-assist: Novel Software for Detecting Plus Disease
Elias Khalili Pour,Hamidreza Pourreza,Kambiz Ameli Zamani,Alireza Mahmoudi,Arash Mir Mohammad Sadeghi,Mahla Shadravan,Reza Karkhaneh,Ramak Rouhi Pour,Mohammad Riazi Esfahani 대한안과학회 2017 Korean Journal of Ophthalmology Vol.31 No.6
Purpose: To design software with a novel algorithm, which analyzes the tortuosity and vascular dilatation infundal images of retinopathy of prematurity (ROP) patients with an acceptable accuracy for detecting plus disease. Methods: Eighty-seven well-focused fundal images taken with RetCam were classified to three groups of plus,non-plus, and pre-plus by agreement between three ROP experts. Automated algorithms in this study weredesigned based on two methods: the curvature measure and distance transform for assessment of tortuosityand vascular dilatation, respectively as two major parameters of plus disease detection. Results: Thirty-eight plus, 12 pre-plus, and 37 non-plus images, which were classified by three experts, weretested by an automated algorithm and software evaluated the correct grouping of images in comparison toexpert voting with three different classifiers, k-nearest neighbor, support vector machine and multilayer perceptronnetwork. The plus, pre-plus, and non-plus images were analyzed with 72.3%, 83.7%, and 84.4%accuracy, respectively. Conclusions: The new automated algorithm used in this pilot scheme for diagnosis and screening of patientswith plus ROP has acceptable accuracy. With more improvements, it may become particularly useful, especiallyin centers without a skilled person in the ROP field.
Pour-Aboughadareh Alireza,Barati Ali,Gholipoor Ahmad,Zali Hassan,Marzooghian Akbar,Koohkan Shir Ali,Shahbazi-Homonloo Kamal,Houseinpour Arash 한국작물학회 2023 Journal of crop science and biotechnology Vol.26 No.5
Dissection of genotype-by-environment interaction (GEI) effects has a key role in identifying stable high-yielding genotypes across various environments before commercial release. This study sought to assess the GEI effect and to identify superior barley genotypes using 32 parametric and non-parametric stability statistics. Eighteen new promising genotypes along with one improved cultivar (as check) were evaluated across ten environments during the 2019–2021 cropping seasons in the warm climate of Iran. The AMMI analysis of variance indicated that genotype, environment, and GEI effects were significant for grain yield. Furthermore, partitioning of the GEI effect showed that the first six interaction principal components (IPCA1–IPCA6) were highly significant. Multivariate analyses classified all measured statistics into five groups based on the dynamic and static concepts of stability. Among the stability statistics, HMGV, RPGV, HMRPGV, CV, NP(2), NP(3), NP(4), KR, S(3), and S(6) showed a dynamic concept of stability. Based on all methods, genotypes G2, G3, G9, G11, G14, and G17 were identified as stable high-yielding genotypes. In general, based on all of the used approaches, G9 and G11 were identified as the best genotypes for cultivation in the warm regions of Iran; hence, these genotypes can be considered for commercial release.
POUR, ALI BAHRANI Academia Via Serica 2017 Acta Via Serica Vol.2 No.2
The present study aims to do a documental study of the Mongol invasion and the fall of Baghdad (the capital of the Abbasid Caliphate) in 1258 CE. It is a case study on a document and two comments on it, which were originally recovered from the burial shroud of a person killed during $H{\ddot{u}}leg{\ddot{u}}^{\prime}s$ conquest of Baghdad. This document was later inserted by someone (possibly by one of its two commentators) in a section of a primary manuscript of Kitab al-Wara'a (written in 1147 CE). Then Osman ibn ${\dot{G}}{\bar{a}}nim$ al-Hiti and Ṭahir ibn '$Abd-All{\bar{a}}h$ ibn Ibrahim ibn Aḥmad, as commentators, wrote their comments about the document. Although these documents are in the form of fragmentary notes, they are rare primary sources that depict the events and the conditions of the siege, the conquest of Baghdad and the collapse of Abbasid Caliphate. This article, while providing images, revised texts, and translations of the documents, aims to introduce them and to explore the civil factors contributing to the fall of Baghdad.
Reza-Pour, Farahnaz,Khalili-Damghani, Kaveh Korean Institute of Industrial Engineers 2017 Industrial Engineeering & Management Systems Vol.16 No.3
Project managers always try to make the best decisions in order to complete their projects in the shortest period of time, with the least amount of costs, and with the highest degree of quality. Therefore, the process of decision-making is conducted in a triangle of time, costs, and quality. This triangle is a crucial part of management process throughout the execution of the project. However, in all problems, some unpredictable situations may be faced. In such situations, some or all parameters of the problem are expressed by uncertain variables. In this paper, a stochastic time-cost-quality trade off project scheduling problem (STCQTP) considering multiple-execution modes, preemption, and generalized precedence relations is developed. In order to solve the STCQTP, a hybrid solution approach based on Stochastic Chance Constraint Programming (SCCP) and Goal Programming (GP) is proposed. SCCP and GP are used to handle the uncertain nature and multiple-objectives of STCQTP, respectively. Numerical example is solved in order to illustrate the applicability of proposed model and solution approach.
Sivandi-Pour, Abbas,Gerami, Mohsen,Khodayarnezhad, Daryush Techno-Press 2014 Structural Engineering and Mechanics, An Int'l Jou Vol.50 No.3
Over the past years, hybrid building systems, consisting of reinforced concrete frames in bottom and steel frames in top are used as a cost-effective alternative to traditional structural steel or reinforced concrete constructions. Dynamic analysis of hybrid structures is usually a complex procedure due to various dynamic characteristics of each part, i.e. stiffness, mass and especially damping. In hybrid structures, one or more transitional stories with composite sections are used for better transition of lateral and gravity forces. The effect of transitional storey has been considered in no one of the studies in the field of hybrid structures damping. In this study, a method has been proposed to determining the equivalent modal damping ratios for hybrid steel-concrete buildings with transitional storey. In the proposed method, hybrid buildings are considered to have three structural systems, reinforced concrete, composite steel and concrete (transitional storey) and steel system. In this method, hybrid buildings are substituted appropriately with 3-DOF system.
Jalal Pour Azar,Mohsen Najarchi,Bijan Sanaati,Mohammad Mahdi Najafizadeh,Seyyed Mohamad Mirhosseini 대한토목학회 2019 KSCE JOURNAL OF CIVIL ENGINEERING Vol.23 No.10
In this research, the results of experiments achieved on some mixtures of concrete comprising silica fume and paper waste ash as a substitute to Portland cement have been presented. The Portland cement was substituted with various ratios (namely 0, 2.5, 5, 7.5 and 10 percent by weight of cement) of both silica fume and paper waste ash. In all mixtures of concrete, the ratio of cement to water was regarded to be persistent (with an amount of 0.4). The experiments’ findings demonstrate that the 28-days tensile, flexural and compressive strengths of concrete specimens of this study are more than the results obtained from the relationship given by both the American (ACI) and Concrete Code of Iran for normal concrete due to adding paper waste ash and Silica fume to some mixes, which indicates their positive effect in increasing mechanical properties. According to our findings, empirical relationships have been proposed for the relationship of indirect tensile strength and 28-days concrete’s compressive strength, flexural tensile strength and concrete’s 28-days compressive strength, compressive strength and specific weight, the estimation of elasticity modulus in regard to specific weight of mix designs, the growing movement of compressive strength of normal concretes by increase in the amount of cement. So that these equations can be useful to predict the behavior of the concrete containing the Silica fume and paper waste ash. The electrical resistance of mix with 10% paper waste ash was a little lower, compared to the witness concrete mix at all ages.
Mahdi Pour-Rouholamin,Mohammad Jalayer,Huaguo Zhou 서울시립대학교 도시과학연구원 2017 도시과학국제저널 Vol.21 No.4
Motorcycles represent an increasing proportion of traffic fatalities in the United States, accounting for more than 12.7% of the total traffic casualties within 2005–2014. Specifically, in North Carolina, motorcycles comprise less than 1% of vehicles involved in crashes but account for more than 7% of total fatalities, representing a top state in the United States. This study tries to investigate the motorcycle crashes in North Carolina more in depth. In doing so, five years’ (2009–2013) worth of crash data was obtained from the Federal Highway Administration’s Highway Safety Information System database. A partial proportional odds (PPO) logistic regression model was developed to examine the influence of the explanatory variable on the ordered dependent variable, that is, injury severity. Moreover, two other popular ordered-response models, that is, proportional odds and non-proportional odds models, as well as one similar unordered-response model, that is, multinomial logit model, were also developed to evaluate their performances compared to the PPO model. Older riders, DUI riding, not wearing helmets, crashes during summer and weekends, darkness, crashes with fixed objects, reckless riding, and speeding were found to increase the severity of injuries. In contrast, younger riders, winter season, adverse weather condition, and wet surface were associated with lower injury severities. Furthermore, crashes in rural areas, overturn/rollover, and crashes happened while negotiating a curve showed fluctuating effects of injury severity. According to two information criteria calculated for all three developed models fitted to the same data, the PPO model was found to outperform the other models and provide more reliable results. Based on the obtained average direct pseudo-elasticities, this study determines the effect of the various identified variables and develops several safety countermeasures as a resource for policy-makers to prevent or mitigate the severity of motorcycle crashes in North Carolina.