Java swing components jobs

We are searching for a mobile developer to join the team to finalise a project for MVP. We need a single developer with both Android (react/java) and iOs (swift) to finalise the app already well underway but requiring changes in UI and functionality. You will also use WhatsApp for comms and JIRA for ticket management and be a strong communicator. Experience a must. Looking for a price per week, and 4 milestones are created and based on sprints achieved.

I'm seeking a creative designer who can help amp up our billboard advertisement for a multivitamin syrup. The ideal freelancer will be a trendsetter, envisioning an engaging, out-of-the-box design that will reach both children and adults alike. Key components for the project: - Highlight "Daily essential vitamins" as the prime benefit of the syrup. - The presentation should evoke creativity and be an absolute trendsetter in the market. Skills and experience: - Proven experience in billboard design - Demonstrable creative thinking - Ability to appeal to a wide target audience (children and adults in this case) - Excellent understanding of colors, style, and visual elements to resonate with different age groups Please submit your bids complete with references o...

We're seeking freelance programmers with a flexible skill set as the specific programming languages and project objectives weren't defined. An ability to adapt to various programming languages would be ideal, encapsulating yet not limited to Java, Python, and C++. As the project's main target and functionality weren't specified, experienced bidders with diverse backgrounds in creating mobile apps, website development, and software application building would be preferred. This project may contain elements like user authentication, database integration, and payment processing. It's important you're adaptable and comfortable with possible modifications as the project progresses.

I'm looking for an experienced website designer, ideally someone with a background in retail...websites - Expertise in implementing and elevating an existing color scheme and logo - Advanced understanding of online retail functionality While there is an existing logo and color scheme, you will be required to skillfully integrate them into the website to maintain and elevate my brand image. The absolute non-negotiable is the adherence and elevation of my brand. Though there are various components needed for the website, emphasis should be on the presentation and sophistication of the site design. In your proposal, highlight your experience related to these specifics. I'm looking forward to working with a professional who understands the subtleties of brand enhancement...

I'm looking for a proficient Angular developer with experience in migrating from AngularJS/CoffeScript to TypeScript. Looking for someone to migrate 2 frontend components from CoffeeScript to TypeScript. Key Project Details: - Both frontend components, Component A and Component B, need to be migrated. - You will be provided with setup instructions and a migration guide to facilitate the process. Expected Freelancer Proficiency: - I am looking for an expert in TypeScript with a strong background in Angular. Deliverables: - Successfully migrate Component A and Component B to TypeScript. - Ensure the migrated code is functioning correctly within the project. Ideal Skills: - Expertise in TypeScript and Angular. - Proficiency in refactoring code from CoffeeScript to ...

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I need an AEM expert with specific experience in Dynamic Media implementation, as well as strong Java, Vue, and JavaScript skills. The project will involve a mix of backend and frontend tasks, and I'm looking for someone who can work with me on this for 3-6 months. Key Requirements: - Adobe Experience Manager (AEM) expertise - Dynamic Media implementation experience - Strong Java, Vue, and JavaScript skills - Ability to work on both backend and frontend tasks - Available to commit to 3-6 months of work Please only apply if you have the appropriate skills and are able to commit to this time frame.

I'm looking for a skilled Java developer to integrate the Coinbase, Kraken and many other cryptocurrency APIs into my project. Key Objectives: - Integration of Coinbase, Kraken APIs and many other's exchanges api's - Implementation of wallet balance retrieval functionality Ideal Skills: - Proficient in Java programming - Experience with cryptocurrency exchanges and APIs - Prior work with well known crypto exchange's APIs preferred - Strong understanding of API integration and security Please provide examples of similar projects you've worked on and your approach to API integrations. Your ability to meet the project's technical requirements and ensure security will be crucial.

I'm searching for a skilled A...construct an application similar to Instagram, focusing specifically on photo and video sharing features. Only front end work is required. Ideal Skills and Experience: - Android Development - Java or Kotlin - Familiarity with Instagram's functionality - UI/UX design implementation from provided specifications Tasks: - Implement a robust photo and video sharing feature - Translate my specific UI/UX design into an engaging user interface. I welcome developers with a solid track record in building interactive and aesthetically pleasing Android applications. It's essential to be proficient in either Java or Kotlin and have a solid understanding of Instagram to replicate its user experience successfully. Let's create a vi...

I just need a c# Console application that will take an Adobe Illustrator (.ai) file and save it as a PDF file and also save it as a PNG. I should be able to specify the width of the PNG and have it set the height automatically based on the source file. The PNG also needs to have transparency instead of a background for the "art board". This needs to be done without requiring expensive 3...just need a c# Console application that will take an Adobe Illustrator (.ai) file and save it as a PDF file and also save it as a PNG. I should be able to specify the width of the PNG and have it set the height automatically based on the source file. The PNG also needs to have transparency instead of a background for the "art board". This needs to be done without requiring expensiv...

I need a smart attendance system for College Student , main focus is Attendance on Different subject like DBMS , PYTHON , JAVA , Etc which utilizes facial recognition technology. Like I want to take Attendance for all the subjects, so in take attendance there should be a option or drop down for the list of Subjects You want take the Attendance Key Elements: - On the main page/home page I need user to register with there Name, Id ,Phone number - And then a Button to take attendance on different subjects using Facial Recognition , in which there should be a option or drop down for the list of subjects - And one main Feature is to show a Pie chart which represents how many students has attended DBMS class , Python class etc - Attendance should be saved in XL Sheet and Pie chart s...

I'm seeking a skilled and professional writer to create a comprehensive company profile that will be used to represent our business to potential clients. Key Components: - Company History: I'd like a detailed, yet succinct, overview of our company's origins, growth and milestones. - Mission and Vision: This section should clearly articulate our company's purpose and long-term goals. - Products and Services: A concise, yet informative, description of the range of products and services we offer. Tone and Style: - The profile should maintain a professional tone throughout. It should be engaging, informative, and reflect the core values of our business. Testimonials: - I'd like to incorporate some customer testimonials in the profile. These should be strate...

I need an AEM expert with specific experience in Dynamic Media implementation, as well as strong Java, Vue, and JavaScript skills. The project will involve a mix of backend and frontend tasks, and I'm looking for someone who can work with me on this for 3-6 months. Key Requirements: - Adobe Experience Manager (AEM) expertise - Dynamic Media implementation experience - Strong Java, Vue, and JavaScript skills - Ability to work on both backend and frontend tasks - Available to commit to 3-6 months of work Please only apply if you have the appropriate skills and are able to commit to this time frame.

I created Java app that create google calendar event via api. I've got below error POST { "code": 403, "errors": [ { "domain": "calendar", "message": "Service accounts cannot invite attendees without Domain-Wide Delegation of Authority.", "reason": "forbiddenForServiceAccounts" } ], "message": "Service accounts cannot invite attendees without Domain-Wide Delegation of Authority." I think it's a problem service account. I want to do it till end of 11.05.2024 Project realization via shared desktop

We developed custodial wallet using Kotlin, JAVA, Node.js, etc. and when we click the send button coins cannot be sent. Please check and fix the issue. apk backend admin panel

...tasks aimed at fulfilling those dreams. 4. **Task Assignment**: A custom AI model assigns tasks to users. 5. **Execution**: Users agree to perform tasks, leading to surprise outcomes. 6. **Flexibility**: The AI adapts scenarios if users decline tasks. 7. **Objective**: Create a network of users supporting each other's dreams, enhancing collective happiness. **Technical Perspective**: - **AI Components**: Two AI systems work in tandem. One generates scenarios based on user input (ChatGPT-like), and the other distributes tasks among users (custom AI model). - **User Interaction**: Users interact with the platform through agreements to tasks, which triggers subsequent actions. - **Adaptability**: The system dynamically adjusts scenarios based on user participation. - **Scalabi...

Copper pipe cutter Project Requirments: 1- Modeling and Creating the 3D components 2-3D Assembly 3- Assembly 2D Drawing with sectional view 4-Rendering Quality 5- Animation 6- Final report This link has the whole assembly, parts and render: We would like you to redo these same parts and assembly but in english. The following attachment will provide the drawing for the copper pipe cutter

...multiple software systems. The ideal candidate(s) will have expertise in Java (specifically Swing), FileMaker, Artificial Intelligence, Django, and general web development. This project involves analyzing the current issues, proposing solutions, and implementing fixes in a timely manner. Key Tasks: - Analyze existing codebases to identify bugs and inefficiencies. - Develop fixes for bugs in systems built with Java Swing, FileMaker, Django, and related web technologies. - Apply AI techniques to optimize operations and improve system functionalities where applicable. - Test fixes to ensure bugs are completely resolved and systems are running smoothly. Ideal Candidate: - Strong proficiency in Java, especially in Swing application development. - ...

...approximately $50 (Fifty Dollars) so that you can purchase ESP32 development boards, breadboards, components (such as resistors, transistors, and capacitors), wires, etc. on a site such as AliExpress, Mercado Libre, etc. The ESP32 is similar to an Arduino. I realize it may take you up to 30 (thirty) days to obtain these items. That's fine with me. However, I will * not * help you deal with corrupt local customs officials who require bribes to release goods. Any “horror stories” you might have heard or read about corrupt local customs officials in your country requiring bribes to release goods probably were for items such as expensive phones and laptops, not a bunch of simple electronics components. Put simply: I suppose a customs official looking at ...

I'm in need of someone adept at blog post writing. Specifically, I require 1-5 blog posts that are 500-1000 words long each. Ideally, the successful candidate will have a stellar command of the English language and a knack for crafting engaging, persuasive content. Please provide examples of your previous work in your bid. I look forward to seeing your creativity in full swing!

...functional on both iOS and Android platforms. Since the primary function was not specified, creativity and ability to design multi-purpose apps will be highly appreciated. Key Requirements: - Strong experience in developing mobile apps for both iOS and Android - Proven experience in cross-platform mobile app development - Proficient coding skills in languages such as Swift, Kotlin, Objective C and Java - Exceptional UX/UI design skills - Strong problem-solving abilities, with a knack for complex troubleshooting tasks - Ability to work independently, with minimal supervision While delivering the final product, I'd also like you to provide the source code along with necessary documentation. If you've worked on similar projects, please include them in your proposal....

I'm seeking an experienced and patient violin teacher for young beginners. The ideal candidate would be: - Proficient with teaching beginner-level vi...patient violin teacher for young beginners. The ideal candidate would be: - Proficient with teaching beginner-level violin specifically for children aged between 5-12 years. - Able to provide in-person lessons at a specific location Turramurra As a teacher, you should have a passion for working with young learners and the ability to break down complex concepts into simpler, easily understandable components. You should be able to create a fun and engaging learning environment for children that fosters their love for music and the violin. If you have experience with young learners and a structured teaching approach, I'd lo...

I have a set of scripts that I need pushed onto GitHub. I'm looking for someone to help me with this task. - You'll be working with scripts written in Python, JavaScript, or Java, which I will share with you. - The main goal of pushing these files on GitHub is for Version Control. This will allow me to keep track of changes made to the scripts, and potentially roll back to previous versions if needed. It's important that you have a good understanding of GitHub Finally, although I do need the repository to follow basic branch naming conventions and workflow rules, I don't need anything overly complicated. A simple, easy-to-follow convention will suffice.

I have a set of scripts that I need pushed onto GitHub. I'm looking for someone to help me with this task. - You'll be working with scripts written in Python, JavaScript, or Java, which I will share with you. - The main goal of pushing these files on GitHub is for Version Control. This will allow me to keep track of changes made to the scripts, and potentially roll back to previous versions if needed. It's important that you have a good understanding of GitHub and Version Control concepts. Finally, although I do need the repository to follow basic branch naming conventions and workflow rules, I don't need anything overly complicated. A simple, easy-to-follow convention will suffice.

I'm looking for a skilled cyber security professional who can assist with ensuring the integrity and safety of our systems. The ideal candidate should have expertise in network security, application security, and data security. Key project components include: - Conducting a thorough vulnerability assessment to identify potential weaknesses in our current systems. - Performing penetration testing to simulate cyber-attacks and evaluate the effectiveness of our security measures. - Executing a comprehensive security audit to ensure that our systems are aligned with industry best practices and compliant with HIPAA, GDPR, and PCI DSS. Your role will be crucial in ensuring our organization is not only secure from cyber threats, but also in compliance with relevant regulations. Exp...

We are ...function to import data from Excel files (.xls or .xlsx) into the app. The import functionality should be similar to the existing "Fuel Injection Price List" section within the app. Ensure data integrity and proper handling of potential errors during import. Implement appropriate user interface elements for file selection and import initiation. Skills Required: Android development expertise (Java/Kotlin) Experience with data parsing and Excel file handling libraries Understanding of user interface design principles for Android Strong problem-solving and debugging skills We are open to discussing different implementation approaches and libraries. Please submit your proposal outlining your experience, technical approach and estimated timeline. We look forward ...

I'm currently in the process of planning a web project potentially hosted on Azure and am in need of a comprehensive IT overview graphic. This diagram should be drawn using Draw.io. Below are the specific components needed: - The diagram should clearly articulate the server architecture, focusing on the application server and web server as separate entities. - The application server runs a CMS system that is accessible from a corporate network using ADFS. - The web server itself hosts only static HTML content. - In front of the system, a CDN with a WAF protects the content. - The private key for decrypting SSL/TLS traffic should be placed inside the corporate network. Skills and Experience: An ideal candidate for this task would be someone well-versed in the use of , with a d...

...React developer, or a Full Stack developer proficient in React JS and Java/Spring. The goal is to create a personal food ordering app, which would facilitate online ordering of food. Key Features: - User Registration and Login: The app should allow users to sign up, log in, and manage their account. - Browsing and Ordering: Users should be able to view a menu, search for items and place orders. - Cart and Checkout: The app will need to have a cart feature and a seamless checkout process. - Order Notification: The app should send orders to the restaurant and have the functionality for the restaurant to either accept or reject the order. The successful freelancer for this project should have a strong proficiency in React JS, Java/Spring, and experience in developing e-comm...

I'm looking for a talented JavaScript developer who can help me with my website's visualization. Key Responsibilities: - Crafting visually appealing loading screens or animation - Implementing various types of visualizations Ideal Skills: - Proficiency in JavaScript and related libraries - Experienced portfolio of visualizations and/or animations See attached brief for more information

On this project, I am on the lookout for an exceptional PCB designer who is well-versed in using Eagle software. Key specifications include: - Designing a basic PCB, involving only a few components. - Adhering to specific dimensions that I have on my list. The ideal candidate should have experience in: - Using Eagle for PCB design - Creating designs conforming to specified dimensions - Working with basic PCB layout and components Please bid if you have a proven track record in these areas and are ready to dive in. I am excited to collaborate with you on this important project.

... We are looking for resources who has good experience to independently do walkthroughs, design a test plan, read and understand the ITGC control requirements across access management. Change management, Incident management, job scheduling, backup & recovery and other operations and configuration controls implemented in SAP and other web applications as well as its related IT Infrastructure components. Expected workload will be to deliver 15-18 work papers by gathering evidences and testing it with good quality. Only experienced consultants who can work independently would be considered, considering all our internal resources are fully occupied. We are also looking for resources who can help our clients implement ITGCs in their new applications based on the internal control...

I have a WhatsApp service provider that provides chatbot and menu-based features. I'm looking for a freelancer to create an adapter that can integrate a different serv...I'm looking for a freelancer to create an adapter that can integrate a different service provider for live-chat on the same WhatsApp number. Key Requirements: - Develop an adapter for live-chat that supports real-time messaging, media file sharing, and chat history retrieval. - Ensure the chatbot dialog history can be passed to the live-chat as a transcript file. Ideal Skills: - Proficiency in Java, Springboot - Prior experience with WhatsApp service provider integrations - Strong understanding of real-time messaging and chatbot systems - Ability to ensure seamless data flow between chatbot dialog and li...

I'm in need of a creative and talented motion graphic designer to illustrate the rules of a card game in a short video. Key Components: • Cartoon-style Graphics: The video should be lively and engaging, and use cartoon-style animations to appeal to our target audience. • Duration of the Video: This primarily depends on your creative process and the way you choose to present the idea. The goal is to effectively and clearly explain the game's rules, regardless of exact timing. • Highlight Game Rules: The video should emphatically focus on illustrating the game rules. Ideal Skills: • Experience in Cartoon Design • Expertise in Motion Graphics • Understanding of Card Games • Strong ability to clarify complex rules in an engaging manner ...

he developer should have the following skills and experience: 1. Proficient in Java, Kotlin and other programming languages; 2. Have a deep understanding of Android platform, familiar with Android SDK and related tools

...functional on both iOS and Android platforms. Since the primary function was not specified, creativity and ability to design multi-purpose apps will be highly appreciated. Key Requirements: - Strong experience in developing mobile apps for both iOS and Android - Proven experience in cross-platform mobile app development - Proficient coding skills in languages such as Swift, Kotlin, Objective C and Java - Exceptional UX/UI design skills - Strong problem-solving abilities, with a knack for complex troubleshooting tasks - Ability to work independently, with minimal supervision While delivering the final product, I'd also like you to provide the source code along with necessary documentation. If you've worked on similar projects, please include them in your proposal....

...a front-end website UX designer to create a user-friendly interface for my financial services website. This site focuses primarily on providing financial advisory services related to investments. Key Responsibilities: - Upgrade the current UX design to increase user engagement - Ensure seamless navigation for users seeking financial advisory services - Create aesthetically pleasing visual components that represent our brand Ideal Skills: - Proven experience with UX design for financial or e-commerce sites - Understanding of investment services, especially in the financial advisory sector - Ability to translate complex processes into intuitive, user-friendly interfaces By applying your UX design skills and understanding of the financial service industry, you'll help...

I'm looking for a developer experienced in .NET Core and Umbraco to make modifications to an existing Umbraco proje...Core and Umbraco - Skilled in CSS customization - Experience with CRM integrations - Understanding of user authentication in Umbraco The main tasks include: - CSS changes to improve the overall look and feel of the site - Customizing the Free Trial form, particularly: • Layout and design adjustments • Integration with a CRM system for effective lead management Your expertise in Umbraco components, particularly in navigation menus, contact forms, and image carousels, will be beneficial for this project. It's crucial to have a sharp eye for detail and a solid understanding of user experience, as the changes should not only be functional but al...

I am on the lookout for an experienced and innovative programmer who can assist in creating a unique search engine from scratch. The specific programming language is open as the user did not specify a preference, so proficiency in Python, Java, or C++ will be a plus. Though the user has not provided insights into the specific features desired for this project, common elements of search engines include web crawling, indexing, and ranking algorithms. Your familiarity with these or willingness to research and incorporate them will be essential to your success in this project. The user did not specifically state the purpose of the search engine, however it could be for personal, business, or educational use. Balancing these needs could be a crucial part of the project. Skills and Expe...

I'm seeking an experienced freelancer to debug and build my GitHub actions for 2 of my Android Java projects. The main task involves using building variants of my android application for the "development", "staging", and "production" environments which will all have separate API endpoints, package names, and app icons. Experienced Android Java programmers with a solid understanding of GitHub action builds, API implementation, and flexible design skills will be the ideal fit for this project.

...backward movement. We have a basic frame design already established but need a designer to refine and enhance the aesthetics to match our modern and high-performance simulator systems. Responsibilities: -Design a visually appealing, modern, and sleek housing for the traction loss platform that complements the existing frame design. -Ensure that the housing facilitates easy access to the mechanical components for maintenance and adjustment without compromising on style. -Collaborate with the engineering team to integrate technical specifications and ensure the housing accommodates all mechanical movements (left-right and forward-backward) efficiently. -Create CAD drawings and 3D models that reflect the intended contemporary design and are ready for production. -Consider material...

...allow for cooling of the internal mechanics, ensuring the design maintains its sleek and clean lines. -Ensure that the metal case is robust and durable, suitable for the rigors of sim racing while maintaining a modern and attractive appearance. -Collaborate closely with our engineering team to ensure that the case meets all functional specifications and integrates seamlessly with other simulator components. -Produce detailed CAD drawings and 3D models that reflect a contemporary, sleek design style. Requirements: -Proven expertise in industrial design, specifically with experience designing metal product casings. -Mastery of CAD software and 3D modeling tools necessary for creating detailed engineering drawings and aesthetic visualizations. -Strong portfolio showcasing a flair ...

I have a meticulously designed project that requires a highly proficient freelancer to bring it to life. The project focuses on Typescript, React, and DND, with a significant emphasis on interaction. Ideal Skills: • Expert understanding of React.js and Typescript • Proven experience in Drag and Drop programming Requirements: • Implement my design into functional, interactive components • Specifically incorporate drag and drop features and click events into the project Experience with similar projects is highly valuable. I seek someone who is dedicated, communicates effectively, and delivers high-quality results. Looking forward to discussing the project specifics when you're on board.

...poor typography, and inconsistent spacing, creating an unorganized layout. In addition, we need a mobile version that aligns with the newly enhanced desktop design. Your expertise will ensure both versions meet professional standards. Key Requirements: Figma Proficiency: - Advanced proficiency in Figma for wireframing and design. - Create visually appealing, interactive layouts using reusable components. - Implement a minimalist design system. Design Refinement: - Overhaul typography for better readability and consistency. - Adjust spacing and layout for clarity and structure. - Implement a cohesive, minimalist visual style. Mobile Design: - Adapt the newly enhanced desktop wireframe to a mobile-compatible layout. -- Ensure consistent style and navigation across both versions. E...

I have an exciting idea for a board game that sits outside the typical themes of Fantasy, Sci-fi, or Historical. The game will have moderately complex mechanics that will engage players and provide replay value. Key requirements: - **Design**: I'm looking for someone to help me flesh out the game's design and mechanics. This includes conceptualizing the gameplay, rules, and components. - **Theme Development**: The game will feature a unique, non-traditional theme. I'll need assistance in fully developing and integrating this theme into the game mechanics. - **Moderate Complexity**: While I want the game to be engaging and strategic, it should still be accessible to a broad audience. The ideal freelancer will be able to balance complexity with playability. In your a...

I'm looking for a seasoned full stack developer with a solid background in AI and mobile development. As the platforms for deployment will be iOS and Android, prof...and Android, proficiency in programming languages that support these platforms is required. Responsibilities: - Develop an AI psychologist application for iOS and Android platforms. - Apply machine learning techniques. - Build an efficient, testable, and reusable code. Ideal Skills: - Experience with AI, Machine Learning, iOS, and Android app development. - Proficiency in Python, JavaScript, and Java would be ideal but it's not required. - Deep understanding of mobile development frameworks. Don't hesitate to apply if you are experienced with building AI apps for mobile platforms. I look forward to a ...

...Voice, Email and update CRM. (i.e. for voice) - If possible, use GoHighLevel to provide back office operations for Flutterflow app. - Basic user authentication and profile management. - Implementation of 'My Favorites/My Garage' features for personalized user experiences. - Integration with plug-and-play tools for rapid deployment and feature integration, such as for voice components. *Should-Have* - Cross-platform functionality (iOS, Android, Web). - Simple analytics to monitor user engagement and app performance possibly using GoHighLevel or Hubspot. - In-app notifications for updates on user-specific interests or deals. - Chatbot integration using existing frameworks for 24/7 customer support. - Partnerships for backend services like warranties and insu...

...delete it when performing a new query. Technical Requirements: 1. Experience in frontend development with AngularJS to create interactive interfaces. 2. Proficiency in backend development with Java or Python for handling API requests. 3. Ability to implement temporary storage systems in memory or cache for sensitive data. 4. Capability to create files for automatic deployment in Lambda functions, Docker containers, or any Serverless service. Expected Deliverables: - Complete development of the interactive form in AngularJS with all required functionalities. - Implementation of the backend in Java or Python for handling API requests and temporary data storage. - Thorough testing to ensure the quality and functionality of the system in different usage scenarios. - Detail...

...delete it when performing a new query. Technical Requirements: 1. Experience in frontend development with AngularJS to create interactive interfaces. 2. Proficiency in backend development with Java or Python for handling API requests. 3. Ability to implement temporary storage systems in memory or cache for sensitive data. 4. Capability to create files for automatic deployment in Lambda functions, Docker containers, or any Serverless service. Expected Deliverables: - Complete development of the interactive form in AngularJS with all required functionalities. - Implementation of the backend in Java or Python for handling API requests and temporary data storage. - Thorough testing to ensure the quality and functionality of the system in different usage scenarios. - Detail...

I'm looking for a proficient Autocad designer to assist with an architectural design project. This task entails creating technical drawing standards including geometric dimensioning for a tech gadget product and a strong understanding of AutoCad software is essential Also, should have a knowledge of design Principles such as scale, proportion, balance, symmetry and aesthetics and basic k...to assist with an architectural design project. This task entails creating technical drawing standards including geometric dimensioning for a tech gadget product and a strong understanding of AutoCad software is essential Also, should have a knowledge of design Principles such as scale, proportion, balance, symmetry and aesthetics and basic knowledge of engineering principles, materials and ...