Crossing intuitionistic KU-ideals on KU-algebras as an extension of bipolar fuzzy sets

Samy M. Mostafa,Ehab f.Adb-elfattah,Mostafa A. Hassan,Young Bae Jun,허걸 원광대학교 기초자연과학연구소 2021 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.22 No.3

The concept crossing intuitionistic structures set is combination of intuitionistic fuzzy set and $N$- function. In this paper, the concept crossing intuitionistic $KU$-ideals are introduced and several properties are investigated. Also, the relations between crossing intuitionistic $KU$-ideals and crossing intuitionistic ideals are given. The image and the pre-image of crossing intuitionistic $KU$-ideals under homomorphism of $KU$-algebras are defined and how the image and the pre-image of crossing intuitionistic KU-ideals under homomorphism of KU-algebras become crossing intuitionistic $KU$-ideals are studied. Moreover, the Cartesian product of crossing intuitionistic $KU$-ideals in Cartesian product $KU$-algebras is established.

Idiopathic Polymorphic Ventricular Tachycardia: a “Benign Disease” with a Touch of Bad Luck?

Sami Viskin 대한심장학회 2017 Korean Circulation Journal Vol.47 No.3

Ventricular extrasystole originating from the right ventricular outflow tract or the left ventricular outflow tract are the most commonly encountered ventricular arrhythmias recorded in ostensibly healthy individuals with no evidence of heart disease. These ventricular arrhythmias have a distinctive electrocardiographic morphology. The morphology is so distinctive that it is common practice to accept the diagnosis of “idiopathic benign ventricular arrhythmias from the outflow tract” based on this unique morphology when the electrocardiogram during sinus rhythm and the echocardiogram are normal, sometimes removing the need to perform invasive tests in patients. Even if the outflow ventricular extrasystole ultimately triggers sustained ventricular arrhythmia, the resulting ventricular tachycardia (VT) will be a monomorphic VT originating from the outflow tract, which is known to be hemodynamically well tolerated. Thus, idiopathic ventricular arrhythmias originating from outflow tracts are universally considered benign. In 2005, we described a rare form of malignant polymorphic VT resulting in syncope or cardiac arrest. Here, we review the literature on this topic since the emergence of initial descriptions of this intriguing phenomenon.

Multiloop Control Strategy for Four-Wire Current Source Active Power Filter

Sami Pettersson,Mika Salo,Heikki Tuusa 전력전자학회 2007 ICPE(ISPE)논문집 Vol.- No.-

Despite the fact that three-wire active power filters have been implemented using both voltage source and current source technology, the research of four-wire current source active power filters has been truly minimal. Only a few topologies have been presented over the years. This paper proposes a four-wire current source active power filter topology for improving the quality of supply in four-wire systems. The proposed topology is controlled using a multiloop control strategy suitable for a single-chip microcontroller implementation. The control strategy combines the load current feedforward connection and the cascaded closed-loop control of the supply currents and the capacitor voltages of the LC-type supply filter. By using the cascaded closed-loop control, the stability of the system can be achieved without the need to overdimension the supply filter. The performance of the proposed system is verified experimentally using a microcontroller controlled four-wire current source active power filter prototype rated for a 5 ㎸A load.

Multi-Obfuscation Approach for Preserving Privacy in Smart Transportation

Sami S. Albouq,Adnan Ani Sen,Nabile Almoshfi,Mohammad Bin Sedeq,Nour Bahbouth International Journal of Computer ScienceNetwork S 2023 International journal of computer science and netw Vol.23 No.4

These days, protecting location privacy has become essential and really challenging, especially protecting it from smart applications and services that rely on Location-Based Services (LBS). As the technology and the services that are based on it are developed, the capability and the experience of the attackers are increased. Therefore, the traditional protection ways cannot be enough and are unable to fully ensure and preserve privacy. Previously, a hybrid approach to privacy has been introduced. It used an obfuscation technique, called Double-Obfuscation Approach (DOA), to improve the privacy level. However, this approach has some weaknesses. The most important ones are the fog nodes that have been overloaded due to the number of communications. It is also unable to prevent the Tracking and Identification attacks in the Mix-Zone technique. For these reasons, this paper introduces a developed and enhanced approach, called Multi-Obfuscation Approach (MOA that mainly depends on the communication between neighboring fog nodes to overcome the drawbacks of the previous approach. As a result, this will increase the resistance to new kinds of attacks and enhance processing. Meanwhile, this approach will increase the level of the users' privacy and their locations protection. To do so, a big enough memory is needed on the users' sides, which already is available these days on their devices. The simulation and the comparison prove that the new approach (MOA) exceeds the DOA in many Standards for privacy protection approaches.

Certificate Revocation in Connected Vehicles

Sami S. Albouq International Journal of Computer ScienceNetwork S 2023 International journal of computer science and netw Vol.23 No.5

In connected vehicles, drivers are exposed to attacks when they communicate with unauthenticated peers. This occurs when a vehicle relies on outdated information resulting in interactions with vehicles that have expired or revoked certificates claiming to be legitimate nodes. Vehicles must frequently receive or query an updated revoked certificate list to avoid communicating with suspicious vehicles to protect themselves. In this paper, we propose a scheme that works on a highway divided into clusters and managed by roadside units (RSUs) to ensure authenticity and preserve hidden identities of vehicles. The proposed scheme includes four main components each of which plays a major role. In the top hierarchy, we have the authority that is responsible for issuing long-term certificates and managing and controlling all descending intermediate authorities, which cover specific regions (e.g., RSUs) and provide vehicles with short-term pseudonyms certificates to hide their identity and avoid traceability. Every certificate-related operation is recorded in a blockchain storage to ensure integrity and transparency. To regulate communication among nodes, security managers were introduced to enable authorization and access right during communications. Together, these components provide vehicles with an immediately revoked certificate list through RSUs, which are provided with publish/subscribe brokers that enable a controlled messaging infrastructure. We validate our work in a simulated smart highway environment comprising interconnected RSUs to demonstrate our technique's effectiveness.

External Debt and Economic Growth: The Case of Emerging Economy

Sami Al Kharusi,Mbah Stella Ada 세종대학교 경제통합연구소 2018 Journal of Economic Integration Vol.33 No.1

This study investigated the relationship between government external borrowing and economic growth, prompted by continuous increases in Oman’s external debt to finance its annual budget. Time series data for the period 1990~2015 were collected from the World Bank and the Central Bank of Oman. The study employed the Autoregressive Distributed Lag cointegration approach explain the error correction mechanism to ascertain the short-run dynamic nature of external debt and economic growth. Consistent with some existing empirical evidence, the study reveals a negative and significant influence of external debt on economic growth in Oman. Further, gross fixed capital was found to be positively significant in determining growth performance in Oman. The study, therefore, recommends a more productive use of the external debt fund in order to affect positive growth.

Proposal of Smartphone based Social E-learning System

Sami Abduljalil,Dae-Ki Kang 한국멀티미디어학회 2010 한국멀티미디어학회 학술발표논문집 Vol.2010 No.2

As a continuous development of phone, computer and internet technologies grow rapidly in multicategories and fields. Mobile-based application is playing a significant role in the revolution of computer and internet advancement technology for the learning and teaching process. The need to be mobile in the learning and teaching process has been an ongoing issue that many researchers have been investigating. Using mobile technology along with internet resources and technologies can create interesting educational methodologies for younger generation instead of the traditional education which may not suit everyone. Therefore, we propose smartphones based e-learning system (SPES) that helps the young generation in the educational fields. We also integrate the social networks services with smartphones e-learning system to bring interesting way of educations for the young generation. We also provide real time communications features in the system in order for system’s users discuss ideas and communicate with others regarding to educational matters openly.

SOME NEW COMMON FIXED POINTS OF GENERALIZED RATIONAL CONTRACTIVE MAPPINGS IN DISLOCATED METRIC SPACES WITH APPLICATION

( Sami Ullah Khan ),( Muhammad Arshad ),( Tahair Rasham ),( Abdullah Shoaib ) 호남수학회 2017 호남수학학술지 Vol.39 No.2

The objective of this manuscript is to continue the study of fixed point theory in dislocated metric spaces, introduced by Hitzler et al. [12]. Concretely, we apply the concept of dislocated metric spaces and obtain theorems asserting the existence of common fixed points for a pair of mappings satisfying new generalized rational contractions in such spaces.

Munchausen Stridor–A Strong False Alarm of Anaphylaxis

Sami L. Bahna,Jennifer L. Oldham 대한천식알레르기학회 2014 Allergy, Asthma & Immunology Research Vol.6 No.6

The diagnosis of anaphylaxis is often based on reported symptoms which may not be accurate and lead to major psychosocial and financial impacts. We describe two adult patients who were diagnosed as having recurrent anaphylaxis witnessed by multiple physicians based on recurrent laryngeal symptoms. The claimed cause was foods in one and drugs in the other. We questioned the diagnosis because of absent documentation of objective findings to support anaphylaxis, and the symptoms occurred during skin testing though the test sites were not reactive. Our initial skin testing with placebos reproduced the symptoms without objective findings. Subsequent skin tests with the suspected allergens were negative yet reproduced the symptoms without objective findings. Disclosing the test results markedly displeased one patient but reassured the other who subsequently tolerated the suspected allergen. In conclusion, these 2 patients’ symptoms and evaluation were not supportive of their initial diagnosis of recurrent anaphylaxis. The compatible diagnosis was Munchausen stridor which requires psychiatric evaluation and behavior modification, but often rejected by patients.

Crossing octahedron sets and their applications to Q-algebras

Samy M. Mostafa,S. H. Han,Ehab F. Adb-elfattah,Mostafa A. Hassan,허걸,백종일 원광대학교 기초자연과학연구소 2022 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.23 No.2

A crossing octahedron set is composed of three components : interval-valued fuzzy set, intuitionistic fuzzy set and negative-valued function. In this paper, we first introduce the concept of crossing octahedron set and investigate its properties. Further, we define a crossing octahedron Q-ideal, Q-subalgebra and BCK-ideal of a Q-algebra, and we deal with their relationships. In addition, the homomorphic images and pre-images of a crossing octahedron Q-ideal are also studied. Related properties of crossing octahedron Q-ideals are explored and discussed. Finally, the Cartesian product of two crossing octahedron Q-ideals is investigated.