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Your search keyword '"Ghaderi, Mohammad"' showing total 266 results
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266 results on '"Ghaderi, Mohammad"'

14. Evaluation of early complications, outcome, and mortality in Coronavirus Disease 2019 (COVID-19) infection in patients who underwent orthopedic surgery

Author

Mohammadpour, Mehdi, Yazdi, Hamidreza, Bagherifard, Abolfazl, Jabalameli, Mahmoud, Moghtadaei, Mehdi, Torkaman, Ali, Yahyazadeh, Hooman, Ghaderi, Mohammad Taher, Fanaeian, Mohammad Mahdi, Langeroudi, Moein Khaleghi, Hashemi, Peyman, Razi, Saeed, Karimpour, Amer, Lirgeshasi, Sam Bemani, and Bahari, Milad

Published
2022
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38. FGAF-CDG: fuzzy geographic routing protocol based on compressive data gathering in wireless sensor networks

Author

Ghaderi, Mohammad, Tabataba Vakili, Vahid, and Sheikhan, Mansour

Abstract

In the wireless sensor networks (WSNs), energy consumption is one of the significant factors. Most of the energy in a WSN is consumed by communication between nodes. To minimize energy consumption, routing protocols can be merged with data aggregation techniques. The geographic adaptive fidelity (GAF) protocol is one of the prominent geographic routing protocols which is proposed in order to reduce energy consumption in WSNs. Moreover, compressive sensing (CS) theory presented as an alternative method for data gathering in WSNs, known as compressive data gathering (CDG). CDG reduces the cost of communications and balances the energy load in the network without imposing heavy computation or transmission overhead. With CDG, instead of receiving all readings from the sensors, the sink may receive few weighted sums of all the readings by which original data can be recovered by the sink. In this paper, we propose a GAF-based routing protocol based on CDG technique named fuzzy GAF based on CDG (FGAF-CDG). In this work, we partition the sensors area into virtual hexagonal grid cells firstly and then we lay the cells according to their geographic locations. In each sampling round, cluster head (CH) sensor in each grid cell is selected based on a fuzzy logic-based algorithm. Then, CH readings will be forwarded to the sink in a multi-hop path based on a fuzzy-based routing algorithm in the CDG form. Simulation results show that the proposed method results in superior efficiency as compared to other competitive GAF-based methods. For example, the proposed model offers about 50% reduction in energy consumption as compared to FTGAF-HEX method depending on the dimensions of the sensors area.

Published
2024
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41. An analysis of management of regional development in Iran

Author

Ghaderi Mohammad Reza, Taghvaei Masoud, and Shafaghi Sirous

Subjects
management of regional development, region, regional imbalances, Business, HF5001-6182
Abstract

In countries such as Iran which cover a large geographical area, the issue of inequality and regional differences provide a substantial challenge in the effort to achieve balanced development. In this study, data were collected using documentary and survey methods as well as Delphi techniques, and analysis was carried out by combining qualitative and quantitative models. In the second step of the Delphi technique, a study of the impact of the factors on each other, and on Management of regional development in Iran, was made using the cross-impact method. In the final step, the effective factors contributing to Management of regional development in Iran were studied using analytical techniques and MicMac software. After analyzing the impact rate of the effective factors on regional imbalances, the key factors were identified and, finally, solutions to reduce the regional imbalances in Iran were proposed.

Published
2017
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47. Knee Flexion Deformity and Increased Posterior Tibial Slope Associated with Osgood Schlatter Disease: A Case Report and Review of Literature

Author

Yazdi, Hamidreza, Motaghi, Paniz, and Ghaderi, Mohammad Taher

Subjects
Case Report
Abstract

Genu recurvatum associated with Osgood-Schlatter disease (OSD) has been reported in several studies. In this report, we describe a rare complication of a case of OSD with flexion contracture (tfighat is the exact opposite of the knee deformity classically associated with OSD) and increased posterior tibial slope. In the current article, we report a 14-year-old case of OSD referred to our center with a fixed knee flexion contracture. Radiographic evaluation revealed a tibial slope of 25 degrees. There was no limb length discrepancy. Bracing that was prescribed in the primary center before referring to us was not successful in treating this deformity. He underwent anterior tibial tubercle epiphysiodesis surgery. After a year, the flexion contracture of the patient was significantly reduced. The tibial slope decreased by 12 degrees and reached 13 degrees. The present report suggests that OSD may affect the posterior tibial slope and lead to knee flexion contracture. Surgical epiphysiodesis can correct the deformity.

Published
2023

48. The Effect of Adding Corticosteroid to the Periarticular Injection Cocktail for Pain Control after Total Hip and Total Knee Arthroplasty: A Double-Blinded Randomized Clinical Trial

Author

Bagheri Fard, Abolfazl, Jabalameli, Mahmoud, Khorrami, Amir Mohsen, Ghaderi, Mohammad Taher, Mohammadpour, Mehdi, and Gharanizadeh, Kaveh

Subjects
Research Article
Abstract

BACKGROUND: The impact of periarticular corticosteroid injection for pain control after total joint arthroplasty (TJA) is controversial. The present study aimed to investigate this controversy in patients undergoing total hip arthroplasty (THA) and total knee arthroplasty (TKA). METHODS: A total of 42 THA and 42 TKA patients were included in this study. The patients of each group were randomly allocated into group A (cocktail+Depo-Medrol) and group B (cocktail alone). The outcome measures were a Visual Analog Scale (VAS) for pain at five different time points for both THA and TKA, as well as the knee range of motion (ROM) and straight leg raise (SLR) for the TKA group only. Patients were followed for three months to observe infection, wound complications, and any venous thromboembolic event. RESULTS: In the THA group, the preoperative VAS, 12, 24, 48, and 72h postoperative VAS were not statistically different between groups A and B (P=0.49, P=0.5, P=0.96, P=0.15, and P=0.11, respectively). In the TKA group, the preoperative VAS, 12, 24 48h, and 72h postoperative VAS were not statistically different between groups A and B (P=1.0, P=0.47, P=0.82, P=0.92, P=0.5, respectively). The mean scores of knee range of motion and ability to perform SLR were not significantly different between TKA patients in the steroid and non-steroid groups (P=0.18 and P=0.58, respectively). The only observed complication was one surgical site infection in the non-steroid group of the TKA. CONCLUSION: The obtained results did not support the benefit of including a steroid (Depo-Medrol) in the periarticular injection cocktail for pain control after the THA and TKA.

Published
2022

49. Railways and urban expansion: how does rail transport affect urban expansion in metropolitan areas? (Warsaw and Copenhagen case).

Author

Kheyroddin, Reza and Ghaderi, Mohammad

Subjects
*URBAN growth, *METROPOLITAN areas, *FRACTALS, *RAILROADS, *CELLULAR automata, *JOINT use of railroad facilities
Abstract

Railway transportation plays a key role in the formation of the spatial structure of metropolitan areas. The metropolitan areas with coherent and regular railways seem to have more disciplined spatial development. The present study aims to express the relationship between the railways and the discipline of spatial structure using a developmental-applied approach. To this end, two metropolitan areas with railway coverage are selected as case studies, and four methods of minimum-distance estimation, spatial regression, fractal geometry, and cellular automata are used to analyze the data. The results indicate that the railway plays a direct role in urban expansion so that, in Copenhagen with an orderly railway network, urban development is channelized around the railway but in Warsaw with a more complicated railway network, urban expansion is more dispersed and located around rail intersections. [ABSTRACT FROM AUTHOR]

Published
2023
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50. Synthesis of methyltriethoxysilane-modified calcium zinc phosphate nanopigments toward epoxy nanocomposite coatings: Exploring rheological, mechanical, and anti-corrosion properties

Author

Haddadi, Seyyed Arash, primary, Alibakhshi, Eiman, additional, Labani Motlagh, Akram, additional, Ramazani S.A., Ahmad, additional, Ghaderi, Mohammad, additional, Ramezanzadeh, Bahram, additional, Mahdavian, Mohammad, additional, and Arjmand, Mohammad, additional

Published
2022
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