Papers by ahmed adam abdullah
An In-Depth Review of AI-Based Techniques for Early Diagnosis of Breast Cancer: Evaluation of CAD System Design and Classification Methodologies
2023 International Telecommunications Conference (ITC-Egypt)
Influence of GGBFS-Based Artificial Aggregate on Mechanical Properties of Concrete
4th International Conference on Architectural & Civil Engineering Sciences
The rapid industrial development recently has negatively affected the environment and human healt... more The rapid industrial development recently has negatively affected the environment and human health through the large accumulation of industrial waste. For this reason, the idea of recycling industrial waste has been widely discussed lately. One of the most important recycling processes is the production of artificial light weight aggregate, since large quantities of aggregate are consumed for concrete production and the limited natural resources for providing nature aggregate. Ground Granulated Furnace Slag (GGBFS) is an industrial waste from the steel melting process. In this study, the influence of GGBFS artificial aggregate on mechanical properties of concrete were investigated. Artificial aggregate was replaced with nature aggregate by 20%, 40%, and 60% by volume. Tests of compressive strength, splitting tensile strength, and bond strength were carried out. The results showed improvement in compressive strength for the three replacement ratios. In addition, concrete contains 40%...
Iraqi Geological Journal
This research addresses the construction of a 3D geological model for the Yamama Formation in the... more This research addresses the construction of a 3D geological model for the Yamama Formation in the Dhi Qar Governorate, southern Iraq. Since the formation is economical due to its deposition period, which represents about 80% of the Iraqi oil reservoirs, and since no study was carried out in this area, this study was performed to explore the reservoir properties using Petrel software. Seismic data, well logs, and previous studies were used. As a result, the structure depth map was established and showed that there are two structure noses at the top of the Yamama Formation. Consequently, the Yamama reservoir is divided into three productive reservoir units named Ya, Yb, and Yc units. The study indicated that the Yc reservoir unit is the best because of its reservoir properties, where the ratio of water saturation is ranged between 37-40 %, the porosity ratio is between 20 and 27 %, and the facies consist of wackestone, packstone, and grainstone. As a result, the YC unit is considered ...
Engineering and Technology Journal
In this approach to get more accuracy of the iris recognition, is composed of many steps: capturi... more In this approach to get more accuracy of the iris recognition, is composed of many steps: capturing the iris image, determining the location of the iris boundaries, normalization, preprocessed using median filter to remove noise, using wavelet transform for two types of filter, Haar and Daubechies (db4), in order to extract the features and finally using the matching by artificial feed forward neural network with back propagation algorithm (FFBNN) for training and testing iris image. In this proposed system, two database systems are used. The first is CASIA database system (version 1.0) (Chinese Academy of Sciences Institute of Automation). And, the second is REAL database system by using real persons and each person takes many images for recognition through camera Mobile Type of Galaxy Note3. In CASIA System, the iris recognition rate for Haar filter was 84.2% and for Daubechies filter was 92.8%, while in Real system, the iris recognition rate for Haar filter was 90% and for Daubechies filter was 98.7%, this means the Daubechies filter was the best in time and error from the Haar filter. Finally, this system is efficient, because the performance measurement of FAR was 0%. The results and the experiments were implemented by P4 computer and the software package MATLAB (R2011a).
Sustainability
There is great growing concern regarding the environmental impact of the building and constructio... more There is great growing concern regarding the environmental impact of the building and construction industry. Aggregate, one of the most crucial ingredients of concrete, is among the concerns in this regard. There will be a steady increase in demand for aggregates in the near future, but limited natural reserves will not be able to respond to this demand due to the risk of depletion. This current situation is forcing researchers to conduct new and artificial material production techniques that keep the resources within the allowed boundaries. Artificial aggregate production is one of the new methods for sustainable, environmentally friendly material production. The mechanical and environmental properties of lightweight concrete produced via artificial aggregates in different ratios were investigated in this study. Fly ash (FA), ground granulated blast-furnace slag (GGBFS), and quartz powder (QP) were utilized in the production of artificial lightweight aggregate (LWA) by using a spec...
Are dietary pattern associated with alexithymia in Saudi adults?
Nutrition and Health
BackgroundAlexithymia is characterized by difficulties in describing feelings and physical sensat... more BackgroundAlexithymia is characterized by difficulties in describing feelings and physical sensations. Few studies have shown that there is a relation between alexithymia and dietary habits.ObjectivesTo determine the prevalence of alexithymia and its association with dietary patterns among a sample of communities in the Eastern Region of the Kingdom of Saudi Arabia.Materials and MethodsA cross-sectional study was conducted using a sample of 247 participants, were selected using convenience sampling. A well-organized and valid online questionnaire was administered, which covered variables related to socio-demographic data, anthropometric measurements, dietary patterns, and the Toronto Alexithymia Scale (TAS).ResultsThe prevalence of Alexithymia was found as 39.3%. Moreover, among the alexithymia and possible alexithymia groups, the majority eat pasta 1–4 times per week (70% and 67% respectively). Alexithemic participants eat fewer vegetables and fruits 46%), while the remaining eat m...
The electric power system is undergoing considerable changes in operation, maintenance, and plann... more The electric power system is undergoing considerable changes in operation, maintenance, and planning as a result of the integration of renewable energy resources (RERs). The transition to a smart grid (SG), which employs advanced automation and control techniques, brings with it new difficulties and possibilities. This paper provides an overview of next-generation smart grids by presenting the most current and cutting-edge developments in the SG sector. This paper discusses the benefits, drawbacks, and prospects of smart grids. The difficulties of integrating RERs into the grid, as well as alternative energy storage solutions, are discussed. The unpredictable nature of resources has an impact on RER output. The energy storage system is critical in dealing with RERs' unpredictable nature and ensuring a smooth and reliable supply to load demand. Smart energy systems provide a number of problems and possibilities in terms of developing, integrating, and implementing electrical grid...
Journal of Al-Quds Open University for Educational & Psychological Research & Studies, 2017
Journal of Al-Quds Open University for Educational & Psychological Research & Studies, 2020
The present study aims at shedding light on dialectical behavioral therapy, as one of the therapi... more The present study aims at shedding light on dialectical behavioral therapy, as one of the therapies approaches that scientific research has shown to be effective in treating many mental disorders. The paper deals with the concept of dialectical behavioral therapy and the differences between it and cognitive behavioral therapy. In addition to the goals of treatment in building a life worth living, and its importance in treating some emotional problems such as suicides and borderline personality disorder, and its skills that included distress tolerance, mindfulness, emotion regulation, and Interpersonal effectiveness . The study also dealt with its four stages, and its strategies, that included dialectical strategies, validation strategies, problem-solving strategies, problem-solving strategies, and case management strategies. The previous aspects were discussed in the light of literature review, theories that interpreted dialectical behavioral therapy and scientific research that focused on measuring its effectiveness in reducing many mental disorders.
In 2014, a new national CLT-based English language curriculum was introduced in Iraq for the purp... more In 2014, a new national CLT-based English language curriculum was introduced in Iraq for the purpose of boosting English language teaching and learning in elementary and secondary schools. However, on the same year of introducing the curriculum, 2014, a group of Islamic extremists (ISIS) started a series of deadly attacks on many cities in Iraq causing a massive internal displacement to take place. In less than a year, millions of Iraqi people were displaced and were scattered over many other ISIS-free cities in Iraq. While most of the displaced people could afford living expenses including rent, transportation and healthcare, others could not and went homeless. Consequently, a number of internally displaced person (IDP) camps were established as a temporary settlement to house the hundreds of thousands of homeless IDPs. Given the fact that those IDP camps were established outside the main cities, and thus were located at a considerable distance from schools, one elementary and one ...
American missionaries in Smyrna Station
Ankara : İhsan Doğramacı Bilkent Üniversitesi İktisadi, İdari ve Sosyal Bilimler Fakültesi, Tarih... more Ankara : İhsan Doğramacı Bilkent Üniversitesi İktisadi, İdari ve Sosyal Bilimler Fakültesi, Tarih Bölümü, 2017.This work is a student project of the The Department of History, Faculty of Economics, Administrative and Social Sciences, İhsan Doğramacı Bilkent University.by Feyzullahoğlu, Burcu
This paper aims to measure the e-business adoption activities in Yemeni SMEs as well as investiga... more This paper aims to measure the e-business adoption activities in Yemeni SMEs as well as investigate the benefit and barriers of using e-business in SMEs in developing countries such as Yemen. The paper employed a mixed method (quantitative and qualitative) case approach. The paper integrated different methods in order to facilitate a deep understanding of the adoption level of e-business in SMEs in. Firstly, semi-structured interviews conducted with SMEs’ managers. Secondly, a survey questionnaire used to generalise and verify the findings from stage 1 to the SEMs population. . About (23.5%) of SMEs have employees between 1-9 and (76.5%) of SMEs have employees between 10 and 49, therefore the majority of them were medium firms. In addition, about 51% of the SMEs have been established for 10 years and below, and 49% were above10 years. The results indicate that the Yemeni SMEs are at the early stages of e-business adoption. It also indicates factors that deter Yemeni SMEs from the ad...
Journal of Educational and Psychological Sciences, 2020
The current study aimed to identify meta-analysis indicators of the studies' results to measure t... more The current study aimed to identify meta-analysis indicators of the studies' results to measure the effectiveness of virtual reality exposure therapy )VRET( in the treatment of specific phobias. Through reference to (180) preliminary studies, where )20( studies were retained after the applying selection and exclusion criteria. The total number of the sample was )712( participants, Distributed to the VRET-based intervention group and comparison groups. The average age was )35.51( years, including )63.9٪( females for studies that identified gender. The results showed that there was a significant high effect size of VRET-based therapeutic interventions in the treatment of specific phobias according to the following arrangement (Arachnophobia, Dental Phobia, Agoraphobia, Aviophobia, then Acrophobia) both in the posttreatment and follow-up period, compared to all comparison groups (waiting list, in vivo exposure and CBT(. The number of sessions had a role in the effectiveness of treatment, as programs that had more than )5( sessions had a greater impact size than programs whose sessions numbered less than )5( sessions.
Tropical Medicine and Infectious Disease, 2021
To date, severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has infected over 80 millio... more To date, severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has infected over 80 million people globally. We report a case series of five clinically and laboratory confirmed COVID-19 patients from Bangladesh who suffered a second episode of COVID-19 illness after 70 symptom-free days. The International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), is a leading public health research institution in South Asia. icddr, b staff were actively tested, treated and followed-up for COVID-19 by an experienced team of clinicians, epidemiologists, and virologists. From 21 March to 30 September 2020, 1370 icddr,b employees working at either the Dhaka (urban) or Matlab (rural) clinical sites were tested for COVID-19. In total, 522 (38%) were positive; 38% from urban Dhaka (483/1261) and 36% from the rural clinical site Matlab (39/109). Five patients (60% male with a mean age of 41 years) had real-time reverse transcription-polymerase chain reaction (rRT-PCR) diagnosed re...
Antibiotics, 2020
The emergence of multidrug-resistant (MDR) Escherichia coli (E. coli) clonal lineages with high v... more The emergence of multidrug-resistant (MDR) Escherichia coli (E. coli) clonal lineages with high virulence potential is alarming. Lack of sufficient data on molecular epidemiology of such pathogens from countries with high infection burden, such as Bangladesh, hinders management and infection control measures. In this study, we assessed the population structure, virulence potential and antimicrobial susceptibility of clinical E. coli isolates from Dhaka, Bangladesh. A high prevalence of MDR (69%) and extended-spectrum β-lactamase production (ESBL) (51%) was found. Most E. coli isolates were susceptible to amikacin (95%), meropenem (94%) and nitrofurantoin (89%) antibiotics. A high prevalence of ST131 (22%) and ST95 (9%) followed by ST69 (4%) and ST73 (3%) was observed. Phylogroups B2 (46%), B1 (16%), D (10%) and F (9%) were prominent. blaCTX-M-15 (52%) and blaNDM-1 (5%) were the most prevalent ESBL and carbapenem resistance genes, respectively. Moreover, the predominant pathotype ide...
IEEE Transactions on Engineering Management, 2020
The cyber-security of organisations is a subject of perennial concern as they are subject to moun... more The cyber-security of organisations is a subject of perennial concern as they are subject to mounting threats in an increasingly digitalised world. While commercial and charitable organizations have been the objects of cyber security research, Social Enterprises have remained unexplored. As Social Enterprises have become increasingly important features of social and economic development, so their prominence as potential targets of cybercrime also increases. In order to address this knowledge gap, this study examines the factors that influence the cyber-preparedness of Social Enterprises in the UK. Through the use of semi-structured interviews with Social Enterprise, these factors are found to comprise the characteristics of the enterprise, the characteristics of the enterprise management, resource constraints, experience of cyber attacks, usage of IT, and awareness of cybersecurity schemes and resources. These insights provide valuable guidance for SE owner-managers, SE support agencies and policy-makers when considering the cyber security of SEs. These findings are of immediate concern to social enterprises but also to other organizations that are engaged in partnerships with them as social enterprises may afford 'gateway' opportunities to those with malicious intent. Social Enterprises are institutions that balance the competing needs of commercial success and the primary objective of delivering social value. The management of cyber security places a further demand upon these resource-constrained organizations, and upon the capacity of individual owner-managers. However, the nature of these enterprises suggests that they present unique opportunities to cyber criminals: their association with vulnerable individuals, use of volunteer resources and links with government systems, and rising visibility among the business landscape, makes their management of cyber security a pressing issue. This study has identified a general lack of awareness of cyber security reporting requirements, preventive measures and support schemes among social enterprises in the United Kingdom. Organizations that represent social enterprises, and local and national governing bodies, need to review the efficacy of their current methods of communicating with and educating this increasingly important sector. However, social enterprise ownermanagers must also take responsibility for raising their own awareness of the current regulations and for effecting appropriate cyber security management within their organizations. This may be aided by the collaborative activity of groups of social enterprises, for instance, among those that operate within defined Social Enterprise Places, or among other collective arrangements.
Strategic Change, 2018
Yemeni small‐ and medium‐sized enterprises (SMEs) are at the early stages of e‐business adoption ... more Yemeni small‐ and medium‐sized enterprises (SMEs) are at the early stages of e‐business adoption and their owners and managers need to be supported to gain an understanding of the benefits that their business can achieve from adopting e‐business. Yemeni SMEs are at the early stages of e‐business adoption. The delay in adopting more advanced e‐business solutions are due to factors including the comparatively low level of technology usage within the organization, lack of qualified staff available to develop, implement and support firms’ websites, and limited financial resources. A lack of computer software and hardware resources appears to have a detrimental effect on e‐business adoption amongst Yemeni SMEs.
{"__content__"=>"Enamel resistance to demineralisation around orthodontic brackets after CO laser irradiation: a randomised clinical trial.", "sub"=>{"__content__"=>"2"}}
Journal of orthodontics, Jan 2, 2018
To evaluate the clinical effect of 10.6 µm CO laser irradiation on the formation of demineralised... more To evaluate the clinical effect of 10.6 µm CO laser irradiation on the formation of demineralised lesions (DLs) around orthodontic brackets. A two-arm, split-mouth, randomised clinical trial (RCT). The Orthodontic Department, Faculty of Dentistry, Damascus University, Syria. Twenty-six patients with a total of 520 teeth were recruited into the trial. Two reversed quadrants of the dental arches in each patient were randomly allocated to CO laser application around the orthodontic brackets. The other two quadrants received a control non-therapeutic light. There was blinding of both patients and assessors in the study. The primary outcome was the presence or absence of at least one new DL observed by clinical and photographic examinations. Secondary outcomes included the degree and area of DLs measured on digital images and DIAGNOdent assessment. Teeth were examined before bonding (T0), after bonding and laser irradiation (T1), after 1 month (T2), 2 months (T3) and 6 months (T4). The p...
Journal of Network and Computer Applications, 2017
A Mobile Wireless Sensor Network (MWSN) is composed of mobile sensor nodes, whereby the life time... more A Mobile Wireless Sensor Network (MWSN) is composed of mobile sensor nodes, whereby the life time of a sensor is specified by the life time of its battery. MWSN is used to measure a mobile object parameters then transmit the sensed data to center station called Sink Node (SN). Routing of the sensed data is a challenging issue since several parameters and restrictions should be managed carefully in MWSN. Although the sensor's power (e.g., sensor's battery level) is a critical issue, managing data transmission time is also a considerable subject especially for real time applications. Several routing protocols had been proposed for MWSN, however, each protocol considers a single type of awareness (such as; long life, delay time, total energy...). While some protocols consider the sensor's energy to maximize the network lifetime, others aim to find the shortest path to reach the destination. In this paper, a multi-aware query driven (MAQD) routing protocol will be proposed for MWSN based on a neuro-fuzzy inference system. MAQD considers four types of awareness; the long life of the sensor, delay time of data transmission, total cost of the network, and the shortest transmission path. Hence, based on the selected type of awareness, a fuzzy inference system selects the proper path for routing data. MAQD is a query driven protocol, accordingly, SN can collect data from some/all sensors by employing a request (REQ) message in which the awareness type is specified. MAQD is simulated and tested using OPNET 14.5 and compared with the latest MWSN routing protocols. Simulation results have shown that MAQD outperforms the selected competitors routing protocols (LEACH, ERTLD, RACE, SPIN, EAR2, DCBM, and Rumor routing) as it introduces the best data delivery with the minimum routing overheads in terms of time penalties and power consumed.
A New Approach to Component-Based Development of Software Architecture
International Review on Computers and Software, Jan 31, 2013
Information system architecture handles requirements of information and systems to support a busi... more Information system architecture handles requirements of information and systems to support a business through describing structural and behavioral capabilities of the system. Software architecture is defined in terms of computational components and interactions among those components. In this context, component-based development is an approach considered the most promising way of developing information systems. Typically, UML 2 component diagrams are used as an architecture-level artifact for modeling business and technical software architectures. Nevertheless, UML notation in and of itself is insufficient for creating meaningful component models. This paper asserts that this difficulty in creating meaningful component models has originated from the use of UML diagrams; furthermore, the paper proposes an alternative flow-based diagramming methodology for software architecture development. The new concept presented in the paper is development of a hierarchy of components on the basis of this flow-based representation. The viability of this idea is demonstrated through a study case of an actual system.
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Papers by ahmed adam abdullah