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This research presents an expert system using the extreme programming method to determine the level of ability in public speaking. Public Speaking is an important speaking skill in many fields, but it is often difficult for individuals to evaluate their ability. The extreme programming method is used to provide a reliable level of workmanship in the public speaking system. The expert system will provide recommendations in the form of solutions, or strategies that can help individuals improve their public speaking skills. individuals in improving their public speaking skills. The solutions provided will be adjusted to the individual's ability level, so as to provide effective knowledge. The trust method used is the certainty factor method. The results displayed are information about level of public speaking ability, the level of confidence of an expert along with solutions that can be done next by website users.

Marketplace system is a means of meeting sellers and buyers online, in this case service providers and car renters. With this information system, renters no longer need to bother looking for the required car that matches the criteria, and service providers are also easier in marketing and expanding their marketing reach. This system was built using the RAD (Rapid Application Development) method of development which allows customers to place orders, select vehicles, eliminating complexity in the traditional process involving visits to rentals. In car rental services there are several problems that need to be resolved. First, there is no web-based information system service that makes it easy for customers to access car rental service company information. Second, conventional services are still fairly slow. Currently, reservations are made in two ways, namely coming to the place or contacting the telephone number on Whatsapp so that prospective tenants have to wait for a response from the rental provider to get information about prices and available cars. Therefore, a car rental information system is needed that specifically serves fleet rental with online booking to display transaction information in the form of car rental and return on the system dashboard to support strategic purposes. This research focuses on building a car rental information system using the PHP programming language with the CodeIgniter framework.  

This research aims to develop an application for recommending safe and suitable skincare products for pregnant women. The application is built using the prototype method and implemented with the Python programming language using the Flask framework. The study encompasses product categories from Drw Skincare, including serums, toners, shampoos, body care products, facial washes, and creams. The system provides options for users to select categories of skincare ingredients they desire. The application issues warnings about skincare ingredients that should be avoided during pregnancy, such as retinol and specific acids. The end result is a list of recommended skincare products containing ingredients that align with the user's selected criteria. Each product is accompanied by comprehensive information about its ingredients and advice. Users can utilize search and advanced filtering features to find skincare products based on product types and brands. The application offers clear user guidance and an intuitive interface, enabling users to navigate and use the application comfortably. It is expected that this application can assist pregnant women in choosing safe and effective skincare products while providing a better understanding of skincare during pregnancy.

Bahrain still suffers from electronic solid waste annually due to ineffective waste ‎disposal management. Compared to other Gulf Cooperation Council (GCC) countries, Bahrain ‎generates the largest waste quantity per person, approximately 1.2 to 1.8 ‎million tons of hazardous waste annually. Therefore, the present research article aims to manage the e-waste discarding mitigation by arranging the waste collection, ‎presenting it for sale/purchase/donation (C2C, C2B, B2G), and organizing the waste recycling ‎process. Derived from this aim, the article explores the e-waste ‎phenomena and proposes the development of an e-waste mobile application named “Athar”. ‎ The significance of “Athar” lies in firstly, enabling citizens to live in a ‎clean environment with limited diseases. Secondly, assisting the ‎Ministry of Tourism attract more tourists. ‎ The research article embraces a seven-phased Agile-based SDLC method to analyze, design, implement, test, and evaluate Athar through the utilization of several research techniques, including questionnaires to collect user and system requirements, other techniques such as data flow diagrams, entity relationship diagram, ‎database schema, etc. for the system design, ‎OutSystems programming language to implement the mobile app, and one questionnaire based on ‎Nielsen heuristics for usability evaluation. Findings demonstrate the adequacy of the Athar application with an outstanding usability score of 89.1%.

The presented paper introduces an enhanced approach to find the available solution(s) for fractional linear programming problems (FLPP). While the common approach relies on considering the elements at the numerator and denominator to construct tables D1 and D2, followed by finding theirs and the Ze values, the new approach could be used to minimize the tables and decrease the calculation times and complicity.

In this study, a website and UI/UX design ordering service system was developed. This system offers clients to make orders through a website that can make it easier for people to find service experts in the field of website and UI/UX design. The development of this system was carried out using the Extreme Programming (XP) method, this method is a software development that emphasizes flexibility, communication, and adaptability to changing requirements. Researchers will use short iterations to create, build, and test websites and UI/UX designs. To ensure a thorough understanding of client requests and preferences, developers and customers will communicate more frequently. The testing method on the system used in this study is User Acceptance Testing, which is a testing stage where the system or software is evaluated to ensure that the system meets user needs and requirements. Users perform this test to ensure that the system functions properly and meets their expectations. The results of this study, system development using the Extreme Programming (XP) method is very helpful for developers because the needs of each user are clearly defined, the use of the User Acceptance Testing method shows that each function of the application system operates according to user needs. Thus, the use of the Extreme Programming method can improve the system development.

Banjaroya Village, Kulon Progo Regency has many tourism potentials, one of which is the Chocolate Cocoa Park. As an educational tourist attraction based on agrotourism, the Chocolate Cocoa Park serves several activities offered to tourists related to the cultivation of Cocoa plants and Chocolate production. However, in this case, the Chocolate Cocoa Park has not packaged and programmed the activity services well. The results of the study show that there are several things that need to be fixed in packaging and providing educational package programs at the Chocolate Cocoa Park. The thing that needs to be fixed is the way to package the tour package, it needs to display an itinerary so that tourists feel easy and can manage their time to participate in the activity. Then the programming is by grouping the activities offered according to the focus of each activity so that tourists can choose what focus activities they want to participate in.

The development of technology and easy access to the internet has affected reading habits, with digital novel platforms becoming popular as an alternative to reading. However, novelists face obstacles in publishing their works, due to fierce competition in the publishing industry. The proposed solution is to build a multiplatform application system as a platform for novelists to publish their works using the Laravel API. The development method used is Waterfall, which consists of five stages of development. This application will provide features that facilitate interaction between novelists and readers, such as likes, comments, and uniquely there is a feature to listen to novels via voice for users who prefer to listen rather than read, with a text-to-speech system. In addition, the app allows novelists to build a stronger fan base. This research aims to provide a practical and efficient platform for novelists to write, edit and publish their works online through the features provided in the application. System testing was carried out using the System Usability Scale (SUS) method to get a score of 79.5 including the Good category with grade scale B. The programming language used in the development of this application is Flutter, which allows the creation of multiplatform applications with responsive and consistent performance on various devices.    

The Bengkalis Regency Education Office (Disdik) provides Local Children's Scholarships to students in an effort to help students to alleviate the dependents of the Single Tuition Fee (UKT) in pursuing education. In determining the recipient of the Tempatan Children's Scholarship, the Education Office government carries out several stages manually such as collecting all the files of students who register, after which the Education Office checks the completeness of the student files one by one, gives a value for each predetermined criterion and manually calculates the value of the criteria. A decision support system for recipients of web-based Local Children's Scholarships is needed to help determine recipients of Local Children's Scholarships to be faster and more accurate. This system is made using the Simple Additive Weighting (SAW) method and Multi Attributive Border Approximation Area Comparison (MABAC) to facilitate the calculation and comparison of the value of each alternative in the system, by determining the ranking based on the largest value as the best alternative. The result of the application of the SAW and MABAC methods in the system is that the system displays alternative data sequentially based on rankings that can help in determining the recipient of the Local Children Scholarship. From 60 field data, the application of SAW and MABAC methods on this system has an accuracy of 83.3%. The development method used is the Extreme Programming method.

This research is an analysis of maximizing profits at UD SUMBERWARAS using a simplex method linear programming analysis tool via the POM QM for Windows V5 application and carrying out manual calculations. The type of data used in this research is qualitative and quantitative data. The results obtained are H1 which states "The optimum amount of baby swaddle production at UD SUMBERWARAS produces 4,500 boxes of baby swaddles A, 4,000 boxes of baby swaddles B and 4,000 boxes of baby swaddles" and H2 which states "The maximum amount of profit obtained by UD SUMBERWARAS in Karanganyar amounting to Rp. 1,300,000,000” is not proven.

The high demand for car rental services in Ciputat, South Tangerang, especially at certain times, has encouraged the growth of many car rental businesses. The presence of many car rental operators in Ciputat certainly creates fierce competition between them. Therefore, it is important for these businesses to carry out continuous evaluation and development in order to remain competitive with competitors. Success in providing satisfactory service to customers will make them remain loyal to using their favorite rental services. Conclusions and recommendations from the study conducted related to Web-Based Car Rental Applications in the Adiba Trans Rental Case, which was built using PHP and MySQL. The results of this study indicate that the development of a web-based application for car rental in the Adiba Trans Rental case using PHP and MySQL has succeeded in meeting the expected objectives. This application offers an effective solution for managing car rentals with ease of use via the web. The effectiveness of this application can be seen from its complete functional capabilities, easy-to-use user interface, and smooth integration between PHP as a programming language and MySQL as a database management system.

PT. Synergy Informatics Innovation faces general problems in managing the guidance of apprentices which is currently still done manually. The communication process between interns and their supervisors tends to be less efficient, resulting in disruption to the focus of supervisors and other employees. As a solution to this problem, the author plans to build a web-based information system for managing interns' guidance. This system will be created using the PHP programming language, with the Laravel framework to ensure reliability and efficiency. Choosing Tailwind CSS as a display framework aims to create an attractive and responsive interface. This system aims to facilitate communication between interns and supervisors, as well as minimize disruption to employees.

The management of data collection of research activities, community service, and publications that occur at the National University of Karangturi Semarang is still done manually using Microsoft Excel, which still has various problems related to collecting, storing, searching, processing, and presenting data when needed for the accreditation process. Based on these problems, an information system is needed that can accommodate all the problems experienced by users. Therefore, an information system will be developed to manage all data related to research activities, community service, and publications carried out by lecturers and improve the efficiency of data management. System design is one of the stages of developing an information system. Simlitabmas design has two main objectives, namely to fulfill the needs of users and to provide a clear picture to all personnel involved in system development. System design is one of the important steps in a system development in which a visual representation of a series of processes or activities in an institution or organization is made. One of the modeling or design tools that can be used is the Unified Modeling Language (UML). UML helps describe and design systems, especially in object-oriented programming. In this research, UML diagrams made consist of use case diagrams, activity diagrams, and sequence diagrams.

Messages require high security in the exchange process because the message is confidential and may only be read by the intended recipient. Information security problems in messages are often encountered, such as active eavesdropping, passive eavesdropping, fraud and data manipulation by unauthorized parties. To overcome this problem, cryptography can be used. This research uses cryptographic techniques with the Vigenere Cipher method to encrypt messages. The aim of this research is to encrypt messages to produce codes that will be sent to the recipient. The encryption process is carried out using the Vigenere Cipher method in the Python programming language. The researcher implemented a program to encrypt the message. The research results show that messages can be protected more strongly and securely. So, if the message is hijacked or intercepted by irresponsible parties, it will be difficult for them to find out the contents of the message. In this way, the confidentiality and authenticity of the message is maintained until it reaches the recipient.

Generation Z is a generation born in 1997-2012. This generation grew up and developed in the digital era, so they are very familiar with technology. However, the digital literacy of generation Z still needs to be improved, especially in terms of technical and creative skills. On December 25-30, 2023, Patitech Academy held a Genz Techno Camp training. This training was attended by 15 participants, consisting of 7 college students, 6 high school/vocational school/Islamic high school students, and 2 junior high school students. The purpose of this activity is to improve the digital literacy of generation Z, especially in terms of technical and creative skills. This activity also aims to prevent generation Z from falling into negative things during the holidays. The training materials provided include: IoT (Internet of Things), Design graphics, Web programming, Content creator, Digital marketing. This training uses a participatory learning method. Training participants are invited to actively discuss and practice. This training is also supported by competent teaching staff in their fields. The results of the training showed that participants showed an increase in technical and creative skills. They can understand the basic concepts of IoT, graphic design, web programming, content creators, and digital marketing. Training participants can also apply these skills in creating digital products, such as applications, websites, graphic designs, and digital content. The Genz Techno Camp training activity has succeeded in increasing the digital literacy of generation Z. This activity can be an example for various parties to improve the digital literacy of generation Z in a sustainable manner.

Karunia gold shop, as one of the gold trading retail players, has several branches in Cepu City and its surroundings. In order to improve operational sales efficiency, this shop will adopt the latest technology by implementing a sales information system. The purpose of this study is to develop an online cashier system based on QR Code at the Karunia gold shop for purchase/sale and payment transactions. Jewelry transaction data from 2018 was IDR 150,594,000, in 2019 it was IDR 109,309,000, and 2020 it was IDR 120,683,000. The structural model system development method uses web-based PHP programming and a MySql database. The results of the black box testing of the new system obtained a functional value of 72.3%. The final result is an Online Cashier System with QR Code which has the potential to increase transaction speed, facilitate gold stock management, and provide a different experience to customers in making effective, efficient and better transactions.    

Employee Performance Assessment Decision Support System Using SAW Method at PT Hasta Bersama Prima Jaya Based on Java. The purpose of this study is to develop an existing employee performance assessment decision support system to facilitate data collection and employee performance assessment process. The research methodology used in the data processing system is the literature study method, namely data collection carried out by taking data from various books in the library, journals and other books that can be used as a basis for analyzing problems that can be discussed in the study, as well as the field study method, namely by conducting direct observations such as interviews and observations. The algorithm in solving the problem used is Simple Additive Weighting. The results of this study are the existence of an application device made with the Java programming language and data storage using a MySQL database so that the process of data collection and employee performance assessment at PT Hasta Bersama Prima Jaya becomes more effective, efficient and practical.

Thesis at the Wira Wacana Christian University Sumba Animal Husbandry Study Program involves the stages of submitting a title, registering for a proposal exam, and a thesis exam. This process currently uses Google Forms, with result announcements via WhatsApp, creating inconsistencies and taking a long time. Changing the thesis title requires additional steps, such as students having to come to campus to remove the old title after it is rejected. Challenges also arise in tracking the frequency of tutoring, especially with large student numbers. This research aims to develop an effective solution by applying the Extreme Programming (XP) method in developing web-based applications. Based on the System Usability Scale (SUS) test, this application received a usability score of 80.2%, making it suitable for use. The successful implementation of this web application makes a positive contribution in improving the quality and efficiency of thesis management in the Wira Wacana Christian University Sumba Animal Husbandry Study Program.

Faculty The Faculty of HOLS Hospitality School faces challenges in manual administration, such as accumulating registration data, difficulty in data retrieval, risk of data loss, administrative inaccuracies, and time-consuming registration and attendance processes, increasing the risk of administrative errors. To address these issues, researchers designed a web-based information system using the waterfall model and PHP programming language. This system allows students to mark attendance using a QR code within a 5-meter radius, mentors to reschedule classes quickly and easily, and administrators to control administrative data accurately and efficiently. The result of this research is an information system product that facilitates academic administration management at HOLS Hospitality School, supports e-learning facilities, and simplifies coordination between students, mentors, and administrators.

Radar is a tool that functions to determine the whereabouts of objects in the surroundings. A military defense system requires a system for monitoring and handling certain areas (land, sea, air) effectively and efficiently to prevent unwanted presence from entering private areas. This design is expected to increase the defense system's capabilities to make it easier to automatically track and destroy enemies. The laser gun is an actuator that is integrated to shoot enemies detected by radar. The servo motor drives the ultrasonic sensor and the diode laser which moves from 00 to 1800, the ultrasonic sensor is integrated into the servo motor which functions to detect objects by reflecting ultrasonic waves on the object and receiving them back when the waves hit the object, then the 5V diode laser is used as a weapon. will emit a laser beam when directed at an object detected by the servo motor. Processing3 software is used as a graphic programming tool that can display object detection read by the ultrasonic sensor. The results of this research are that the ultrasonic sensor is capable of detecting objects in the range 0-40cm and the servo motor is capable of reaching angles from 00 to 1800. And this system can work effectively during shooting so that it can meet defense needs in dealing with enemies and can work quickly and precisely.