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782 results on '"Hajizadeh, Mohammad"'

7. MobileDenseNet: A new approach to object detection on mobile devices

Author

Hajizadeh, Mohammad, Sabokrou, Mohammad, and Rahmani, Adel

Subjects
Computer Science - Computer Vision and Pattern Recognition, Computer Science - Machine Learning, Computer Science - Neural and Evolutionary Computing
Abstract

Object detection problem solving has developed greatly within the past few years. There is a need for lighter models in instances where hardware limitations exist, as well as a demand for models to be tailored to mobile devices. In this article, we will assess the methods used when creating algorithms that address these issues. The main goal of this article is to increase accuracy in state-of-the-art algorithms while maintaining speed and real-time efficiency. The most significant issues in one-stage object detection pertains to small objects and inaccurate localization. As a solution, we created a new network by the name of MobileDenseNet suitable for embedded systems. We also developed a light neck FCPNLite for mobile devices that will aid with the detection of small objects. Our research revealed that very few papers cited necks in embedded systems. What differentiates our network from others is our use of concatenation features. A small yet significant change to the head of the network amplified accuracy without increasing speed or limiting parameters. In short, our focus on the challenging CoCo and Pascal VOC datasets were 24.8 and 76.8 in percentage terms respectively - a rate higher than that recorded by other state-of-the-art systems thus far. Our network is able to increase accuracy while maintaining real-time efficiency on mobile devices. We calculated operational speed on Pixel 3 (Snapdragon 845) to 22.8 fps. The source code of this research is available on https://github.com/hajizadeh/MobileDenseNet.

Published
2022

23. Disclosure of HIV status and stigma in rural communities in Brazil: A conundrum for researchers

Author

Sia, Drissa, Hajizadeh, Mohammad, Hongoh, Valerie, and Guimaraes, Patricia Neves

Subjects
HIV/AIDS, stigma, rural community, ethics, impersonation, confidentiality, anonymity of research participants, deception, Social Sciences
Abstract

Stigmatization and discrimination are common consequences following disclosure of HIV serostatus; such factors are especially problematic in rural communities where “everyone knows everyone”. In this case study, researchers conducting ethnographic field studies in remote areas of Brazil decided to impersonate friends or relatives of research participants living with HIV as a means to protect participants from inadvertent disclosure of their serostatus to fellow community members. These acts of “wilful deception” raise issues about honesty and integrity in research, and how to balance issues of confidentiality with communicating research findings to communities and the broader public.

Published
2013

37. Correction: Socioeconomic gradient in physical activity: findings from the PERSIAN cohort study

Author

Najafi, Farid, Soltani, Shahin, Matin, Behzad Karami, Karyani, Ali Kazemi, Rezaei, Satar, Soofi, Moslem, Salimi, Yahya, Moradinazar, Mehdi, Hajizadeh, Mohammad, Barzegar, Loghman, Pasdar, Yahya, Hamzeh, Behrooz, Haghdoost, Ali Akbar, Malekzadeh, Reza, Poustchi, Hossein, Eghtesad, Sareh, Nejatizadeh, Azim, Moosazadeh, Mahmood, Sakhvidi, Mohammad Javad Zare, Joukar, Farahnaz, Hashemi-Shahri, Seyed Mohammad, Vakilian, Alireza, Niknam, Ramin, Faramarzi, Elnaz, Akbari, Ghodrat Akhavan, Ghorat, Fershteh, Khaledifar, Arsalan, Vahabzadeh, Davoud, Homayounfar, Reza, Safarpour, Ali Reza, Hosseini, Sayed Vahid, Rezvani, Reza, and Hosseini, Seyyed Ahmad

Published
2022
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40. Correction: Socioeconomic gradient in physical activity: findings from the PERSIAN cohort study

Author

Karyani, Ali Kazemi, Matin, Behzad Karmi, Soltani, Shahin, Rezaei, Satar, Soofi, Moslem, Salimi, Yahya, Moradinazar, Mehdi, Hajizadeh, Mohammad, Pasdar, Yahya, Hamzeh, Behrooz, Barzegar, Loghman, Haghdoost, Ali Akbar, Malekzadeh, Reza, Poustchi, Hossein, Mohammadi, Zahra, Faramarzi, Elnaz, Safarpour, Ali Reza, Pourfarzi, Farhad, Moosazadeh, Mahmood, Nejatizadeh, Azim, Farjam, Mojtaba, Vahabzadeh, Davoud, Ahmadi, Ali, Ghorat, Fereshteh, Ahmadi, Jafar, Mansour-Ghanaei, Fariborz, Mirjalili, Mohammad Reza, Eslami, Saeid, Maharlouei, Najmeh, Tabatabaei, Seyed Mehdi, Sarvandian, Sara, and Najafi, Farid

Published
2022
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42. Correction: Decomposing socioeconomic inequality in poor mental health among Iranian adult population: results from the PERSIAN cohort study

Author

Najafi, Farid, Pasdar, Yahya, Matin, Behzad Karami, Rezaei, Satar, Karyani, Ali Kazemi, Soltani, Shahin, Soofi, Moslem, Rezaeian, Shahab, Zangeneh, Alireza, Moradinazar, Mehdi, Hamzeh, Behrooz, Shushtari, Zahra Jorjoran, sajjadipour, Mansour, Eslami, Saeid, khosrojerdi, Maryam, Shabestari, Sahar, Mehrparvar, Amir Houshang, Kashi, Zahra, Nejatizadeh, Azim, Naghipour, Mohammadreza, Boogar, Shahrokh Sadeghi, Fakhari, Ali, Cheraghian, Bahman, Heidari, Haydeh, Molavi, Parviz, Hajizadeh, Mohammad, and Salimi, Yahya

Published
2022
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44. Correction: Decomposing socioeconomic inequality in dental caries in Iran: cross-sectional results from the PERSIAN cohort study

Author

Najafi, Farid, Rezaei, Satar, Hajizadeh, Mohammad, Soofi, Moslem, Salimi, Yahya, Karyani, Ali Kazemi, Soltani, Shahin, Ahmadi, Sina, Rad, Enayatollah Homaie, Matin, Behzad Karami, Pasdar, Yahya, Hamzeh, Behrooz, Nazar, Mehdi Moradi, Mohammadi, Ali, Poustchi, Hossein, Motamed-Gorji, Nazgol, Moslem, Alireza, Khaleghi, Ali Asghar, Fatthi, Mohammad Reza, Aghazadeh-Attari, Javad, Ahmadi, Ali, Pourfarzi, Farhad, Somi, Mohammad Hossein, Sohrab, Mehrnoush, Ansari-Moghadam, Alireza, Edjtehadi, Farhad, Esmaeili, Ali, Joukar, Farahnaz, Lotfi, Mohammad Hasan, Aghamolaei, Teamur, Eslami, Saied, Tabatabaee, Seyed Hamid Reza, Saki, Nader, and Haghdost, Ali Akbar

Published
2022
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45. A Genetic Study of Spillovers in the Bean Common Mosaic Subgroup of Potyviruses.

Author

Hajizadeh, Mohammad, Ben Mansour, Karima, and Gibbs, Adrian J.

Subjects
*COMMON bean, *VIRAL genomes, *PROTEIN genetics, *POPULATION genetics, *MOSAIC viruses
Abstract

Nine viruses of the bean common mosaic virus subgroup of potyviruses are major international crop pathogens, but their phylogenetically closest relatives from non-crop plants have mostly been found only in SE Asia and Oceania, which is thus likely to be their "centre of emergence". We have compared over 700 of the complete genomic ORFs of the crop pandemic and the non-crop viruses in various ways. Only one-third of crop virus genomes are non-recombinant, but more than half the non-crop virus genomes are. Four of the viruses were from crops domesticated in the Old World (Africa to SE Asia), and the other five were from New World crops. There was a temporal signal in only three of the crop virus datasets, but it confirmed that the most recent common ancestors of all the crop viruses were before inter-continental marine trade started after 1492 CE, whereas all the crown clusters of the phylogenies are from after that date. The non-crop virus datasets are genetically more diverse than those of the crop viruses, and Tajima's D analyses showed that their populations were contracting, and only one of the crop viruses had a significantly expanding population. dN/dS analyses showed that most of the genes and codons in all the viruses were under significant negative selection, and the few that were under significant positive selection were mostly in the PIPO-encoding region of the P3 protein, or the PIPO protein itself. Interestingly, more positively selected codons were found in non-crop than in crop viruses, and, as the hosts of the former were taxonomically more diverse than the latter, this may indicate that the positively selected codons are involved in host range determination; AlphaFold3 modelling was used to investigate this possibility. [ABSTRACT FROM AUTHOR]

Published
2024
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46. The impact of different dosages of vitamin E supplementation on oxidative stress, spatial learning, working memory, and the expression of aging-related genes in the heart and hippocampus of aged mice.

Author

Zamanian, Mohammad Yassin, primary, Vasei, Farnoosh Molavi, additional, Golmohammadi, Maryam, additional, Mahmoodi, Mehdi, additional, Khademalhosseini, Morteza, additional, Tavakoli, Tayyebeh, additional, Esmaeili, Ozra Sadat, additional, Zarei, Sadegh, additional, Mirzaei, Mohammad Reza, additional, and Hajizadeh, Mohammad Reza, additional

Published
2024
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