40 research outputs found

    Registration Management System for Online Learning

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    As there are so many changes occurring in the current education system. If we see the last 2 years, most of the student community faced a lot of issues in attending classes. To overcome all those issues, all the educational organizations transformed their current manual teaching-learning system into an online learning system. Sudden transformation to an E-Learning system is creating issues like managing the students, schedules, communication, and other information. Keeping all this in mind, we want to manage all the student and teacher data with the help of automating the current manual system. To learn the courses online, educational institutes need to automate physical services. For doing this, a registration management system needs to be implemented. This registration system will be managing the data of students, teachers, course details, etc. For doing such operations the application will be categorizing the users into 3 types of students, teacher, and admin. The main objective of this application is to manage the student\u27s and teachers’ data. Students who want to learn need to register with the application and then they need to sign up. This will add security to the application and the student will be identified with the help of a username and password. All the personal information of students and teachers will be maintained, they will be given additional features like adding the details, updating the data, deleting the data, searching for the data, etc. Existing applications will not suit the requirements of our system, that is the reason a new application needs to be developed. As per the requirements of the application, the estimated project completion date is 12th December 2022

    A Two Channel Analog Front end Design AFE Design with Continuous Time Σ-Δ Modulator for ECG Signal

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    In this context, the AFE with 2-channels is described, which has high impedance for low power application of bio-medical electrical activity. The challenge in obtaining accurate recordings of biomedical signals such as EEG/ECG to study the human body in research work. This paper is to propose Multi-Vt in AFE circuit design cascaded with CT modulator. The new architecture is anticipated with two dissimilar input signals filtered from 2-channel to one modulator. In this methodology, the amplifier is low powered multi-VT Analog Front-End which consumes less power by applying dual threshold voltage. Type -I category 2 channel signals of the first mode: 50 and 150 Hz amplified from AFE are given to 2nd CT sigma-delta ADC. Depict the SNR and SNDR as 63dB and 60dB respectively, consuming the power of 11mW. The design was simulated in a 0.18 um standard UMC CMOS process at 1.8V supply. The AFE measured frequency response from 50 Hz to 360 Hz, depict the SNR and SNDR as 63dB and 60dB respectively, consuming the power of 11mW. The design was simulated in 0.18 m standard UMC CMOS process at 1.8V supply. The AFE measured frequency response from 50 Hz to 360 Hz, programmable gains from 52.6 dB to 72 dB, input referred noise of 3.5 μV in the amplifier bandwidth, NEF of 3

    The Designing of objects using rational splines with shape control

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    Integrated cmos rectifier for rf-powered wireless sensor network nodes

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    This article presents a review of the CMOS rectifier for radio frequency energy harvesting application. The on-chip rectifier converts the ambient low-power radio frequency signal coming to antenna to useable DC voltage that recharges energy to wireless sensor network (WSN) nodes and radiofrequency identification (RFID) tags, therefore the rectifier is the most important part of the radio frequency energy harvesting system. The impedance matching network maximizes power transfer from antenna to rectifier. The design and comparison between the simulation results of one- and multi-stage differential drive cross connected rectifier (DDCCR) at the operating frequencies of 2.44GHz, and 28GHz show the output voltage of the multi-stage rectifier doubles at each added stage and power conversion efficiency (PCE) of rectifier at 2.44GHz was higher than 28GHz. The (DDCCR) rectifier is the most efficient rectifier topology to date and is used widely for passive WSN nodes and RFID tags

    Factors Affecting Domestic Tourism Promotion in Jordan: A Case Study of the Official Media

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    This paper deals with the impact of the Jordanian media in stimulating domestic tourism. When studied under various aspects, this study is deducted to evaluate the general trend of the official media and its role in increasing the size of domestic tourism in Jordan. The scientific case of this study is about the weakness of the Jordanian domestic tourism compared with the International Tourism. This is in addition to the official media's role regarding this issue. In this study, it had been concluded that the official media provides good results in the promotion of domestic tourism. Nevertheless, there are still many obstacles which continue to get in the way of the efforts which aim to develop and widen the prospects of domestic tourism in Jordan. The study pointed out a number of recommendations. One of the most important recommendations was that all media used for Tourism purposes in Jordan needs to be developed regarding the content, not the design. Also, the content should provide a real message about how an affordable domestic tourism can be appropriate and suitable for the Jordanian family. In addition, in-depth studies on the impact of the new media and its known tools to promote domestic Tourism should be developed

    Integrated CMOS rectifier for RF-powered wireless sensor network nodes

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    This article presents a review of the CMOS rectifier for radio frequency energy harvesting application. The on-chip rectifier converts the ambient low-power radio frequency signal coming to antenna to useable DC voltage that recharges energy to wireless sensor network (WSN) nodes and radiofrequency identification (RFID) tags, therefore the rectifier is the most important part of the radio frequency energy harvesting system. The impedance matching network maximizes power transfer from antenna to rectifier. The design and comparison between the simulation results of oneand multi-stage differential drive cross connected rectifier (DDCCR) at the operating frequencies of 2.44GHz, and 28GHz show the output voltage of the multi-stage rectifier doubles at each added stage and power conversion efficiency (PCE) of rectifier at 2.44GHz was higher than 28GHz. The (DDCCR) rectifier is the most efficient rectifier topology to date and is used widely for passive WSN nodes and RFID tag

    The Role of Hotel Staff in Returning Customers in the Five and Four Star Hotels(Case Study Dead Sea)

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    The study aims to examine the role of hotel staff in returning customers in the five and four star hotels in the Dead Sea reserve. This research adopts, expediency sampling method to carry on a questionnaire andtakes an employee of the hotel a research sample, and send 180 questionnaires and receive 120 questionnaires, The study adopts the SPSS software package carrying on by statistical analysis,we found a role of hotel staff in returning customers in terms of skills and appearance and a better service to satisfy the customers Keywords:Returning Customers,Dead Sea reserve,TQM,Jordan

    The Determinants Of Information Technology Towards Innovation Performance In Iraqi SMEs

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    Information technology has inevitably perceived as a core source for the competitive advantages of SMEs. It facilitates innovation capabilities through transforming the needed knowledge that is important for new product, services, market, organizational and processes development. Yet, the literature on the application of IT on innovation abilities still suffering to empirical research, especially from developing countries. Therefore, this article aims to examine the role of IT infrastructure on innovation capabilities in Iraqi SMEs. The survey was used to gather data and regression analysis carried to analysis the data. The finding of this paper emphasizes that IT infrastructure (IT connectivity, modularity and personal) has positive effect on innovation performance in Iraqi SMEs

    Regioselective palladium-catalyzed ring-opening reactions of C1-substituted oxabicyclo[2,2,1]hepta-2,5-diene-2,3-dicarboxylates

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    Abstract Palladium-catalyzed ring-opening reactions of C1 substituted 7-oxanorbornadiene derivatives with aryl iodides were investigated. The optimal conditions for this reaction were found to be PdCl 2 (PPh 3 ) 2 , ZnCl 2 , Et 3 N and Zn in THF. Both steric and electronic factors played a role in the outcome of the reaction as increasing the steric bulk on the bridgehead carbon decreased the yield. These reactions were found to be highly regioselective, giving only one of the two possible regioisomers in all cases. A diverse collection of novel, highly substituted biphenyl derivatives were obtained. 23
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