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Novel Unilateral Dental Expander Appliance(UDEX):A Compound Innovative Materials

Computers, Materials & Continua 2021年第9期68卷 3499-3511页

作者： Hasan Sabah Hasan Abdallah AAbdallah Imran Khan Hala Sadek Alosman Ayshan Kolemen bilal alhayani Department of Orthodontic Khanzad Teaching CenterGeneral Directorate of Hawler-Ministry of HealthErbilIraq Department of Industrial Engineering German Jordanian UniversityAmmanJordan Department of Electrical Engineering University of Engineering and TechnologyPeshawarPakistan Department of Orthodontics Near East UniversityNicosiaNorth CYPRUSTurkey Orthodontic Department Al-Mustaqbal University CollegeBabelIraq Department of Electronics and communication Yildiz Technical UniversityTurkey

True unilateral posterior crossbite in adults is a challenging malocclusion to treat,especially when we need to correct cross-arch segments with unwanted effects on non-cross *** expansion methods are expected to have some shortcomings;the Unilateral dental expander appliance used to restore unilateral cross bite dental arch is an uncommon appliance;for this,a designed new device is *** paper aimed to invite a new unilateral dental expander appliance(UDEX)to treat unilateral dental posterior crossbite in adults using available dental material,easy to use and handle,well tolerated by the patient,and biocompatible with oral *** could find that in all dental markets and dental clinics—an eighteen-year-old female with bilateral crossbite and upper and lower dental arch *** active orthodontic treatment,a quad-helix expander had broken from one side at soldering between band and wire *** patient did not show up to the clinic for a while due to COVID 19 pandemic lockdown,leading to a true unilateral crossbite at the dental arch’s upper left side,especially at the molar premolars *** unilateral cross bite was treated using a new specially designed expanded appliance as a unilateral posterior cross bite dental maxillary *** a result of this study,orthodontic treatment was finished within(15)months,much less than *** obtained Class I molar and canine relationships with uncrossed dental arches in both upper arch sides,proper overbite and overjet with well-leveled and aligned teeth as it confirmed by clinical examination and radiographic images(OPG Orthopantomogram)and cephalometric radiograph(WebCeph analysis digitalized computer program).Conclude from that,the newly designed unilateral dental expander(UDEX)is proven to be useful for treating real unilateral posterior crossbites as single molar or premolar tooth and multiple joint unilateral crossed posterior ***,it could easily modify it fo

关键词： Unilateral crossbite dental material acrylic pads wire bending expander

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A Machine Learning-Based Distributed Denial of Service Detection Approach for Early Warning in Internet Exchange Points

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Computers, Materials & Continua 2023年第8期76卷 2235-2259页

作者： Salem alhayani Diane R.Murphy School of Technology and Innovation College of Business InnovationLeadershipand Technology(BILT)Marymount UniversityArlingtonVirginia22207USA

The Internet service provider(ISP)is the heart of any country’s Internet infrastructure and plays an important role in connecting to theWorld *** exchange point(IXP)allows the interconnection of two or more separate network *** Internet traffic entering a country should pass through its ***,it is an ideal location for performing malicious traffic *** denial of service(DDoS)attacks are becoming a more serious daily *** actors in DDoS attacks control numerous infected machines known as *** are used to send numerous fake requests to overwhelm the resources of victims and make them unavailable for some *** date,such attacks present a major devastating security threat on the *** paper proposes an effective and efficient machine learning(ML)-based DDoS detection approach for the early warning and protection of the Saudi Arabia Internet exchange point(SAIXP)*** effectiveness and efficiency of the proposed approach are verified by selecting an accurate ML method with a small number of input features.A chi-square method is used for feature selection because it is easier to compute than other methods,and it does not require any assumption about feature distribution *** ML methods are assessed using holdout and 10-fold tests on a public large-size *** experiments showed that the performance of the decision tree(DT)classifier achieved a high accuracy result(99.98%)with a small number of features(10 features).The experimental results confirmthe applicability of using DT and chi-square for DDoS detection and early warning in SAIXP.

关键词： Internet exchange point Saudi Arabia IXP(SAIXP) distributed denial of service chi-square feature selection machine learning

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