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Article ; Online: H-RABIN CRYPTOSYSTEM

Hayder Raheem Hashim

Journal of Mathematics and Statistics, Vol 10, Iss 3, Pp 258-

2014 Volume 262

Abstract: ... modification of Rabin cryptosystem is called H-Rabin Cryptosystem. Also, some basic mathematical concepts are ... explained and it finally compares the H-Rabin Cryptosystem, RSA cryptosystem and Rabin cryptosystem in terms ... of security and efficiency. This H-Rabin cryptosystem is a public key cryptosystem where the private key is ...

Abstract	Cryptography is the science of using mathematics that's used to hide information or data that is being sent between participants in a way that prevents other people from reading it. The need of exchanging messages secretly promoted the creation of cryptosystems to enable receivers to interpret the exchanged information. In this study, a particular public key cryptosystem called Rabin Cryptosystem is presented considered with the help of Chinese Reminder Theorem. Since the decryption algorithm of the Rabin cryptosystem is based on computing square roots modulo n, where n = p.q where p and q are primes. This study suggests a modification of Rabin cryptosystem that can make the cryptosystem more immune against some attacks. This modification focuses on considering n = p. q. r where p, q and r are primes. This new modification of Rabin cryptosystem is called H-Rabin Cryptosystem. Also, some basic mathematical concepts are explained and it finally compares the H-Rabin Cryptosystem, RSA cryptosystem and Rabin cryptosystem in terms of security and efficiency. This H-Rabin cryptosystem is a public key cryptosystem where the private key is composed of three primes, p, q and r and a public key composed of n = p. q. r and it is based on the hardness of factoring. Therefore, this new modification can make the cryptosystem more immune against some future attacks.
Keywords	Cryptography ; Rabin Cryptosystem ; Chinese Reminder Theorem ; H-Rabin Cryptosystem ; RSA Cryptosystem ; Mathematics ; QA1-939 ; Science ; Q
Subject code	028
Language	English
Publishing date	2014-01-01T00:00:00Z
Publisher	Science Publications
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: H-RABIN CRYPTOSYSTEM

Hayder Raheem Hashim

Journal of Mathematics and Statistics, Vol 10, Iss 3, Pp 304-

2014 Volume 308

Abstract	Cryptography is the science of using mathematics that's used to hide information or data that is being sent between participants in a way that prevents other people from reading it. The need of exchanging messages secretly promoted the creation of cryptosystems to enable receivers to interpret the exchanged information. In this study, a particular public key cryptosystem called Rabin Cryptosystem is presented considered with the help of Chinese Reminder Theorem. Since the decryption algorithm of the Rabin cryptosystem is based on computing square roots modulo n, where n = p.q where p and q are primes. This study suggests a modification of Rabin cryptosystem that can make the cryptosystem more immune against some attacks. This modification focuses on considering n = p. q. r where p, q and r are primes. This new modification of Rabin cryptosystem is called H-Rabin Cryptosystem. Also, some basic mathematical concepts are explained and it finally compares the H-Rabin Cryptosystem, RSA cryptosystem and Rabin cryptosystem in terms of security and efficiency. This H-Rabin cryptosystem is a public key cryptosystem where the private key is composed of three primes, p, q and r and a public key composed of n = p. q. r and it is based on the hardness of factoring. Therefore, this new modification can make the cryptosystem more immune against some future attacks.
Keywords	Cryptography ; Rabin Cryptosystem ; Chinese Reminder Theorem ; H-Rabin Cryptosystem ; RSA Cryptosystem ; Mathematics ; QA1-939 ; Science ; Q
Subject code	028
Language	English
Publishing date	2014-01-01T00:00:00Z
Publisher	Science Publications
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Assessing setup errors and shifting margins for planning target volume in head, neck, and breast cancer.

Alabedi, Hayder

Journal of medicine and life

2023 Volume 16, Issue 3, Page(s) 394–398

Abstract: Accurately calculating setup errors is crucial in ensuring quality assurance for patients undergoing radiation therapy treatment. This cross-sectional study aimed to determine the systematic, random, and planning target volume (PTV) margin errors for ... ...

Abstract	Accurately calculating setup errors is crucial in ensuring quality assurance for patients undergoing radiation therapy treatment. This cross-sectional study aimed to determine the systematic, random, and planning target volume (PTV) margin errors for patients with head and neck cancer (n=48) and breast cancer (n=50). The treatment setup was performed using electronic portal imaging (EPIDs) and irradiated using Elekta linac. The errors were calculated using the van Herk formula. The systematic error for the head and neck was 0.89, 0.43, and 1.49 mm on the x, y, and z-axis, respectively, and 0.39, 0.74, 0.38 for the breast cases. The random error was 0.82, 0.68, 0.94 mm for the head and neck and 0.66, 0.72, 0.79 mm for the breast. The PTV margin shifting error for the head and neck were 2.79, 1.55, and 4.38 mm, while it was 1.43, 2.35, and 1.50 mm for the breast. The setup errors varied according to the tumor location. The study highlights the potential benefits of using EPIDs for reducing uncertainties in setup verification procedures.
MeSH term(s)	Humans ; Female ; Breast Neoplasms/diagnostic imaging ; Breast Neoplasms/surgery ; Radiotherapy Planning, Computer-Assisted/methods ; Cross-Sectional Studies ; Head and Neck Neoplasms/diagnostic imaging ; Head and Neck Neoplasms/radiotherapy ; Diagnostic Imaging
Language	English
Publishing date	2023-04-30
Publishing country	Romania
Document type	Journal Article
ZDB-ID	2559353-5
ISSN	1844-3117 ; 1844-3117 ; 1844-3109
ISSN (online)	1844-3117
ISSN	1844-3117 ; 1844-3109
DOI	10.25122/jml-2022-0241
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Atmospheric Aerosols : Regional Characteristics - Chemistry and Physics

Abdul-Razzak, Hayder

2012

Keywords	Climate change
Size	1 electronic resource (492 pages)
Publisher	IntechOpen
Document type	Book ; Online
Note	English ; Open Access
HBZ-ID	HT021048883
ISBN	9789535150060 ; 9535150065
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article ; Online: Dynamic Contrast Enhanced-MRI and Apparent Diffusion Coefficient Quantitation for Differentiate Hepatocellular Carcinoma from Hepatocellular Adenoma.

Alareer, Hayder Suhail Najm / Jasim Taher, Hayder / Dinar Abdullah, Ayoob

Asian Pacific journal of cancer prevention : APJCP

2024 Volume 25, Issue 3, Page(s) 931–937

Abstract: Background: Due to their overlapping radiological characteristics, hepatic lesions, such as hepatocellular carcinoma (HCC) and hepatocellular adenoma (HCA), present a substantial diagnostic challenge. Accurate differentiation between HCC and HCA is ... ...

Abstract	Background: Due to their overlapping radiological characteristics, hepatic lesions, such as hepatocellular carcinoma (HCC) and hepatocellular adenoma (HCA), present a substantial diagnostic challenge. Accurate differentiation between HCC and HCA is essential for the best clinical treatment and therapeutic decision-making. This study aims to assess the potential role of DCE-MRI and Apparent Diffusion Coefficient (ADC) quantitation in the diagnosis of hepatocellular carcinoma (HCC) from hepatocellular adenoma (HCA). Methods: 103 patients (56 HCC, 47 HCA) with histopathologically proven hepatocellular lesions were the subjects of a cross-sectional investigation. A standardized imaging technique was used for DCE-MRI on all patients. Diffusion-weighted imaging (DWI) provided the ADC values. The diagnostic efficacy of DCE-MRI and ADC in differentiation was evaluated using statistical analyses, such as t-tests and receiver operating characteristic (ROC) curve analysis. SPSS VER 16 was used for the analysis of the collected data. Results: A total of 103 patients (female: male= 52:51, 57.14±3.09 years) were included in the study. The study revealed significant differences in DCE-MRI parameters and ADC values between HCC and HCA lesions. ADC value was significantly lower in HCC than in HCA (p < 0.001). The area under the curve (AUC) was 0.78 (95% CI: 0.69-0.87) for ADC, 0.84 (95% CI: 0.76-0.91) for Ktrans, and 0.72 (95% CI: 0.62-0.82) for Ve. Sensitivity and specificity for ADC were 76.59% and 71.42%, respectively. Also, PPV and NPV of ADC were 69.23% and 78.43%, respectively. Sensitivity and specificity for Ktrans were 82.14% and 76.59%, respectively. Also, PPV and NPV of Ktrans were 80.7% and 78.26%, respectively. Conclusion: In conclusion, DCE-MRI-derived parameters, along with ADC values, exhibit promise as non-invasive tools for differentiating HCC from HCA.
MeSH term(s)	Humans ; Male ; Female ; Carcinoma, Hepatocellular/diagnostic imaging ; Adenoma, Liver Cell/diagnostic imaging ; Liver Neoplasms/diagnostic imaging ; Cross-Sectional Studies ; Contrast Media ; Magnetic Resonance Imaging/methods ; Diffusion Magnetic Resonance Imaging/methods ; Sensitivity and Specificity
Chemical Substances	Contrast Media
Language	English
Publishing date	2024-03-01
Publishing country	Thailand
Document type	Journal Article
ZDB-ID	2218955-5
ISSN	2476-762X ; 1513-7368
ISSN (online)	2476-762X
ISSN	1513-7368
DOI	10.31557/APJCP.2024.25.3.931
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Article: Abdominal pain in children with COVID-19.

Haithem, H A / Sadik, H K / Hayder, A J

Khirurgiia

2022 , Issue 10, Page(s) 58–62

Abstract: Objective: To analyze clinical features, diagnosis and treatment of pediatric patients referred to our pediatric surgery center with abdominal pain as a main manifestation of COVID-19.: Material and methods: We retrospectively reviewed 56 patients ... ...

Title translation	Abdominal'naya bol' u detei s COVID-19.
Abstract	Objective: To analyze clinical features, diagnosis and treatment of pediatric patients referred to our pediatric surgery center with abdominal pain as a main manifestation of COVID-19. Material and methods: We retrospectively reviewed 56 patients with abdominal pain associated with SARS-CoV-2 infection at the Basrah Children Specialty Hospital between June 2020 and December 2021. We collected data including demographic data, symptoms, imaging data, laboratory findings, treatments, and clinical outcomes. Results: Fifty-six patients (48 male and 8 female) with a median age of 9 years were analyzed. All patients had abdominal pain. Fifty-two patients complained of vomiting, 48 patients with fever, 36 patients with cough, and 20 patients with shortness of breath. Twenty patients were diagnosed with acute appendicitis, two of them had appendicular abscess. Mesenteric lymphadenitis was found in 12 patients, obstructed inguinal hernia in 4 patients, and epididymo-orchitis in two patients. Ten patients required surgical intervention. Conclusion: COVID-19 should be suspected in any child presenting with acute abdominal pain. In the era of COVID-19, all cases of abdominal pain in children including those with acute appendicitis are better to be treated conservatively.
MeSH term(s)	Abdominal Pain/diagnosis ; Abdominal Pain/etiology ; Abdominal Pain/therapy ; Acute Disease ; Appendicitis/complications ; Appendicitis/diagnosis ; Appendicitis/surgery ; COVID-19/complications ; COVID-19/diagnosis ; Child ; Female ; Humans ; Male ; Retrospective Studies ; SARS-CoV-2
Language	English
Publishing date	2022-09-01
Publishing country	Russia (Federation)
Document type	Journal Article
ZDB-ID	419230-8
ISSN	2309-5628 ; 0023-1207
ISSN (online)	2309-5628
ISSN	0023-1207
DOI	10.17116/hirurgia202210158
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Article: Modifying performance of solar still, by using slices absorber plate and new design of glass cover, experimental and numerical study.

Shareef, Abbas S / Kurji, Hayder J / Hamzah, Ahmed H

Heliyon

2024 Volume 10, Issue 1, Page(s) e24021

Abstract: By utilizing novel techniques on the absorber plates as well as the glass cover, this effort attempts to increase the distilled water productivity of a modified pyramid solar still. Under the climatic conditions of Iraq, the use of basin absorber plates ... ...

Abstract	By utilizing novel techniques on the absorber plates as well as the glass cover, this effort attempts to increase the distilled water productivity of a modified pyramid solar still. Under the climatic conditions of Iraq, the use of basin absorber plates with slices along its length, and a W-shaped glass cover was investigated experimentally and numerically. In this work, two comparable solar stills with basin absorber plates of 1 m2 have been planned and built using regional resources. Two absorber plates made of stainless steel were produced, first one was solid and the second was sliced. Two covers made of glass were produced one has a pyramid-shaped glass cover and the other a W-shape. According to experimental and numerical findings, forming slices and changing the glass cover resulted in a 20 % increase in the amount of distilled water. when compared to a pyramid glass cover and a standard sort of absorber plate.
Language	English
Publishing date	2024-01-07
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2024.e24021
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Article ; Online: Modifying performance of solar still, by using slices absorber plate and new design of glass cover, experimental and numerical study

Abbas S. Shareef / Hayder J. Kurji / Ahmed H. Hamzah

Heliyon, Vol 10, Iss 1, Pp e24021- (2024)

2024

Abstract	By utilizing novel techniques on the absorber plates as well as the glass cover, this effort attempts to increase the distilled water productivity of a modified pyramid solar still. Under the climatic conditions of Iraq, the use of basin absorber plates with slices along its length, and a W-shaped glass cover was investigated experimentally and numerically. In this work, two comparable solar stills with basin absorber plates of 1 m2 have been planned and built using regional resources. Two absorber plates made of stainless steel were produced, first one was solid and the second was sliced. Two covers made of glass were produced one has a pyramid-shaped glass cover and the other a W-shape. According to experimental and numerical findings, forming slices and changing the glass cover resulted in a 20 % increase in the amount of distilled water. when compared to a pyramid glass cover and a standard sort of absorber plate.
Keywords	W-shape of glass cover. slices absorbing plate. productivity of solar still. six face cover. Paraffin wax ; Phase change material ; Science (General) ; Q1-390 ; Social sciences (General) ; H1-99
Subject code	621
Language	English
Publishing date	2024-01-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Factors associated with the severity of traumatic brain injury.

Lafta, Ghazwan / Sbahi, Hayder

Medicine and pharmacy reports

2023 Volume 96, Issue 1, Page(s) 58–64

Abstract: Introduction: Traumatic brain injury (TBI) is a defect in the brain function resulting from the action of external factors. The condition ranges from transient shifts in cellular ionic concentrations to total structural damage; the clinical symptoms can ...

Abstract	Introduction: Traumatic brain injury (TBI) is a defect in the brain function resulting from the action of external factors. The condition ranges from transient shifts in cellular ionic concentrations to total structural damage; the clinical symptoms can vary from brief confusion to death. The current classification system, based on the Glasgow Coma Scale (GCS), divides TBI into mild (GCS 14 to 15), moderate (GCS 9 to 13), and severe TBI (GCS 3 to 8). The leading causes of head injury in the population can be falls, motor vehicle collisions, blasts, and bullet injuries. The ultimate survival and neurologic outcome of the head trauma patient depend on the extent of TBI occurring at the time of injury. The aim of the study is to assess the factors associated with brain injury and their effect on its severity. Method: A cross sectional, retrospective study including 469 adult patients with head injury was carried out in the emergency department of Baghdad teaching hospital between 1 October 2016 - 30 October 2017. Data of all the patients were entered and analyzed using the statistical package for social sciences (SPSS) software for Windows, version 24. The significance of correlation was assessed using a Chi-square test. Level of significance was set at ≤ 0.05. Final findings were presented in tables with an explanatory paragraph for each table using the MS. Office (Word 2013) for Windows. Results: A total number of 469 patients were enrolled in this study with a mean age of 42.6 ± 13.7 years. The vast majority of the patients were males (383/469), which represented 81.7%. The male to female ratio was 4.45 to 1. The distribution of the patients according to their traumatic brain injury was 241 patients (51.4%) with mild, 99 (21.1%) with moderate and 129 (27.5%) with severe TBI. Associated injuries among the studied group were facial injuries in 133 (28.4%), skull fracture in 150 (32%), and thoracolumbar fracture in 51 (10.9%). The associated injuries were more frequent in the extremities - 112/469 (23.9%), combined injuries in 112 (23.9%), chest and abdomen injuries were reported in only 6% and 6.8%, respectively. The causes of injuries in the studied group were road traffic accidents (RTA), the most frequent mechanism - 37.1% of the cases, followed by fall from height (FFH) (23.9%), blast injury (16.8%), bullet injury (13%), while other mechanisms represented only (9.2%). There is a significant association reported with gender, where severe injuries were more frequent among males than females (P=0.014). All associated injuries were significantly associated with severe traumatic brain injury (P<0.05), also bullet injury was significantly associated with severe traumatic brain injury, followed by blast injury (P<0.001). Severe traumatic brain injury was significantly associated with the presence of clinical and radiographic findings (P<0.001). Conclusion: The severity of TBI is significantly related to the type of the associated injury, mechanism of injury, clinical and radiological findings, and to the male gender, while it is not dependent on the age of the patient.
Language	English
Publishing date	2023-01-25
Publishing country	Romania
Document type	Journal Article
ZDB-ID	2974425-8
ISSN	2668-0572 ; 2602-0807
ISSN (online)	2668-0572
ISSN	2602-0807
DOI	10.15386/mpr-2314
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Article ; Online: Integrated Multiscale Domain Adaptive YOLO.

Hnewa, Mazin / Radha, Hayder

IEEE transactions on image processing : a publication of the IEEE Signal Processing Society

2023 Volume PP

Abstract: The area of domain adaptation has been instrumental in addressing the domain shift problem encountered by many deep learning applications. This problem arises due to the difference between the distributions of source data used for training in comparison ... ...

Abstract	The area of domain adaptation has been instrumental in addressing the domain shift problem encountered by many deep learning applications. This problem arises due to the difference between the distributions of source data used for training in comparison with target data used during realistic testing scenarios. In this paper, we introduce a novel MultiScale Domain Adaptive YOLO (MS-DAYOLO) framework that employs multiple domain adaptation paths and corresponding domain classifiers at different scales of the YOLOv4 object detector. Building on our baseline multiscale DAYOLO framework, we introduce three novel deep learning architectures for a Domain Adaptation Network (DAN) that generates domain-invariant features. In particular, we propose a Progressive Feature Reduction (PFR), a Unified Classifier (UC), and an Integrated architecture. We train and test our proposed DAN architectures in conjunction with YOLOv4 using popular datasets. Our experiments show significant improvements in object detection performance when training YOLOv4 using the proposed MS-DAYOLO architectures and when tested on target data for autonomous driving applications. Moreover, MS-DAYOLO framework achieves an order of magnitude real-time speed improvement relative to Faster R-CNN solutions while providing comparable object detection performance.
Language	English
Publishing date	2023-03-14
Publishing country	United States
Document type	Journal Article
ISSN	1941-0042
ISSN (online)	1941-0042
DOI	10.1109/TIP.2023.3255106
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