Kana response live application performance testing jobber

Filter

Mine tidligere søk
Filtrer etter:
Budsjett
til
til
til
Skriv
Ferdigheter
Språk
    Jobbstatus
    2,000 kana response live application performance testing jobber funnet, priser i USD

    ...Opprettelse og vedlikehold av annonser og kampanjer, testing og optimalisering med mål om økt markedsandel, økt salg og økt ROAS. Selskapet/produktene som skal markedsføres er www.sigbergaudio.no. Annonsering både på norsk og engelsk (hovedmålgruppe Norge + Skandinavia). Freelance/deltidsarbeid, gjerne kommunikasjon per chat. Ønsker noen med god kompetanse på annonseadministrasjon og annonseringsstrategi, A-B testing av annonser osv. Har du referansecaser / eksempler på hva du har gjort før er det en fordel. _________________________________________________________________________ I require help for both strategy and administration of facebook, instagram and potentially google advertisin...

    $45 / hr (Avg Bid)
    $45 / hr Snitt bud
    14 bud

    app project. app project. app project

    $1403 (Avg Bid)
    $1403 Snitt bud
    20 bud

    https://www.freelancer.in/contest/372440.html

    $46 (Avg Bid)
    $46 Snitt bud
    3 bud

    English/Chinese fluent, living in Houston,

    $15 - $25 / hr
    $15 - $25 / hr
    0 bud

    android app for

    $3073 (Avg Bid)
    $3073 Snitt bud
    4 bud

    App for sharing study material

    $112 (Avg Bid)
    $112 Snitt bud
    5 bud

    WE ARE A GIS TEAM AND WE ARE LOOKING FOR A ARCGIS JAVASCRIPT DEVELOPR FOR DEVELOP WEB MAP APPICATION USING ARCGIS JAVASCRIPT API. THE APPLICATION MUST BE DEVELOP AS THE VIEWER TO THE FOLLOWING LINK: , THIS VIEWER CAN BE USED AS A BOILERPLATE / STARTING POINT FOR BASIC VIEWER; USING ARCGIS JAVASCRIPT API FOR GIS FUNCTIONALITY, FRAMEWORK DOJO FOR WIDGET AND OTHER CLASSIC JAVA FUNCTION AND BOOTSTRAP FOR GRAPHIC COMPONENT. WILL BE MADE AVAILABLE A MOCKUP. THE WEB APPLICATION CONCERNS THE INTEGRATION BETWEEN ARCGIS SERVER SERVICES EXPOSED AS WMS AND WFS AND EXTERNAL WEATHER DATA. WORK PROVIDES A FIRST STEP FOR DEVELOP ALL GIS FUNCTIONALITY WHIT ARCGIS SERVER SERVICES AND A SECOND STEP FOR INTEGRATION A WEATHER DATA. THIS ANNOUNCMENT IS FOR FIRST STEP AND THIS IS

    $542 (Avg Bid)
    $542 Snitt bud
    2 bud

    App for recharge online...........................................................................................................................................................................................................................................

    $256 (Avg Bid)
    $256 Snitt bud
    3 bud
    Create an Animation Avsluttet left

    Project Link: Online Portfolio: Monkey Feet YouTube Link: TETÉU-ANIMATED FOOTBALL ASSISTANT FOR LIVE UPDATES- FOOTBALL 2014 Teteu-Animated Football Assistant YouTube Link: Website: Natwork Flow v=GNTcY01wwUE ArenasBands

    $2391 (Avg Bid)
    $2391 Snitt bud
    2 bud

    Fulltime Live PHP Website for testingFulltime Live PHP Website for testingFulltime Live PHP Website for testingFulltime Live PHP Website for testingFulltime Live PHP Website for testingFulltime Live PHP Website for testing

    $17 (Avg Bid)
    $17 Snitt bud
    1 bud

    App for for for for for for for for for for for for for dogdog54.

    $652 (Avg Bid)
    $652 Snitt bud
    3 bud

    app error fix

    $100 (Avg Bid)
    $100 Snitt bud
    1 bud

    Implementing UIpopovercontroller for iphone

    $22 (Avg Bid)
    $22 Snitt bud
    11 bud

    Need Phone App for Existing Database. Features Need 1) Register 2) Login 3) My Account 4) Create Order 5) Track Order 6) view Order

    $508 (Avg Bid)
    $508 Snitt bud
    5 bud

    Nnnn ffggff ffcdffffddddrdgjgfdd

    $30 - $250
    $30 - $250
    0 bud

    dfbfm immpofdsmom d m ; t;o m;m f;gm mh;lhm df;mf;lm ;m dgm df;mf m l dflm d;glmgd;mgf;lgf lfm;lmd;l mf;'jh,hj/,

    $5190 (Avg Bid)
    $5190 Snitt bud
    3 bud

    Trenger en som kan implementere XML eller live product feed fra en leverandør inn til min prestashop.

    $222 (Avg Bid)
    $222 Snitt bud
    1 bud
    Test Project Avsluttet left

    Testing project for database.

    $120 (Avg Bid)
    $120 Snitt bud
    1 bud
    Event-Driven AI Chatbot 6 dager left
    VERIFISERT

    ...in building the backend of a chatbot, which is built using an event-driven microservices architecture. REQUIRED SKILLS: 1-Proven expertise in designing, implementing, and managing applications built using event-driven microservices architecture 2-Proficient in integrating and consuming RESTful APIs to enable seamless communication between microservices 3-Skilled in testing and debugging microservices to ensure high performance, reliability, and scalability Identity and Access Management (IAM) 4-In-depth knowledge and hands-on experience with at least one of the following IAM solutions: 1.1 -Keycloak. 1.2-Casdoor. 5- Strong proficiency in Python programming language 6- Expertise in developing RESTful APIs using the Fast API framework 7- Proficient in utilizing MongoDB as ...

    $52 / hr (Avg Bid)
    Omtalt Taushetspliktsavtale
    $52 / hr Snitt bud
    54 bud

    ...algorithms. In this project, you will conduct a set of experiments to compare the performance of dictionary implementations that use unsorted arrays vs. sorted arrays. You are given the Dictionary interface () and its implementation class (). In addition, the file contains a list of 10,000 key-value pairs that represent certain measurements. Key Skills: • Expertise in Java programming • Extensive experience with diverse data structures and algorithms • Ability to adapt to fluctuating project requirements Your ability to create powerful, flexible systems with Java will be crucial for this undertaking. Though the specific application hasn't been set, your versatile problem-solving skills will ensure we're prepared for

    $32 (Avg Bid)
    $32 Snitt bud
    6 bud
    portrait drawing 6 dager left

    I would like a drawing of a photo of my mother and my grandmother on her wedding day with a view to add myself in after my wedding day (can return the picture to add the extra person) More details: What style of portrait drawing are you looking for? Realistic Should the portrait be based on a photograph or do you prefer a live session? Based on photograph Would you like the portrait to be drawn in colour, or would you prefer black and white? Black and White

    $347 (Avg Bid)
    $347 Snitt bud
    21 bud

    ...specifically focused on AWS, and ideally, you should have experience with the following: - AWS EKS: The ability to create, manage and optimize a Kubernetes cluster on AWS EKS. - Argocd: Proficiency in configuring and deploying applications to Kubernetes using Argocd. - CI/CD Best Practices: Strong understanding of industry best practices for CI/CD, including infrastructure as code and automated testing. - Monitoring and Logging: Experience with setting up highly advanced monitoring and logging for CI/CD pipelines, ensuring real-time monitoring and comprehensive logging capabilities. Your role will be to design and implement a robust system that will automate the software delivery process, while ensuring the highest levels of monitoring and logging. The goal is to significa...

    $24 / hr (Avg Bid)
    $24 / hr Snitt bud
    2 bud

    I require a professional in SEO to enhance my website's visibility and overall performance. The main focus will be on on-page and off-page optimization, as well as conducting comprehensive keyword research and analysis. Key responsibilities: - Implement on-page and off-page optimization strategies to improve search engine rankings and increase website traffic. - Conduct in-depth keyword research to identify high-traffic, relevant terms. - Analyze and refine existing content to align with SEO best practices and maximize visibility. The urgency of the project requires the selected freelancer to be highly experienced, proactive, and capable of delivering results within a short timeframe. Previous success in boosting online sales through SEO is a definite advantage.

    $75 (Avg Bid)
    $75 Snitt bud
    21 bud

    ...a skilled ReactJS developer with no less than 10 years of experience in the field who can help me develop a new web application from scratch. Essential Skills: - In-depth knowledge of React Component Development - Proficiency in Redux State Management - Experience with React Router Navigation The perfect candidate for this role should be well-versed in additional tools and technologies such as: - GraphQL - TypeScript - Jest testing framework. The main objective of this project is to build a robust and dynamic web application that meets our specific requirements and standards. Your role will be pivotal in designing, creating, testing and implementing this web application. So, if you're up for a challenge and willing to dedicate your time and ...

    $8 / hr (Avg Bid)
    $8 / hr Snitt bud
    27 bud

    Budget Tracker: Develop an app to help users manage their finances by tracking income, expenses, and savings goals. Include features like expense categorization, budgeting tools, and customizable reports.

    $27 (Avg Bid)
    $27 Snitt bud
    15 bud

    I'm looking for an experienced Google Ads expert to help me boost the sales conversion rates on my ecommerce website, specifically in the fashion and accessories category. Key Aspects: - The main objective of the project is to increase the conversion rate, no...- Proven track record of managing successful Google Ads campaigns for ecommerce. - Experience in the fashion and accessories industry would be a significant advantage. - Understanding of the behavior and preferences of middle-aged adults. - Ability to optimize campaigns for increased sales conversions, not just clicks. - Proficiency with Google Ads tools and analytics to track and report on performance. Please include examples of your previous work in similar projects when bidding. Accuracy and timeliness are of utm...

    $2 / hr (Avg Bid)
    $2 / hr Snitt bud
    10 bud

    I'm looking for an expert to optimize the SEO for my Amazon ads targeting Pet and Equine categories. I particularly need guidance on how best to specific...for my Amazon ads targeting Pet and Equine categories. I particularly need guidance on how best to specifically target these categories. My primary goal for the campaign is to improve sales conversions in this sector. Key tasks include: - Understanding Amazon's algorithm and applying relevant strategies - Researching effective keywords and implementing them effectively - Monitoring campaign performance and providing suggestion for improvements Ideally, you will have substantial experience with Amazon SEO and a proven track record of improving sales conversions. Experience with the Pets and Equine categories will be...

    $100 (Avg Bid)
    $100 Snitt bud
    40 bud

    My Arlo Pro 5 security camera has unfortunately suffered accidental damage, resulting in scratches around the lens. This has not impacted the camera's image quality and performance. I'm seeking a professional who can either replace the damaged patt of the camera or somehow fill in and disguise the scratches. Key Requirements: - Expertise in repairing Arlo Pro 5 security cameras. - Proficiency in replacing camera lenses without affecting the device's functionality. - Previous experience handling accidental damage on cameras and ensuring quality

    $19 - $161
    Lokal
    $19 - $161
    0 bud

    ...Excellent communication and project management skills. • Proposal Requirements: Please provide a detailed proposal that addresses the following: • Overview of your agency and relevant experience. • Case studies or examples of previous work, particularly in the training sector. • Initial assessment of our current digital marketing efforts and potential strategies you would implement. • Detailed response to the questionnaire. Proposed budget and timeline for achieving our objectives, including your approach to phasing the project starting with area that delivers immediate impact and ROI We look forward to reviewing your proposal and potentially working together to achieve exceptional growth for our training company I look forward to working toget...

    $160 (Avg Bid)
    $160 Snitt bud
    33 bud

    Looking for an expert in Oracle Utility Application Framework (OUAF) technology who can assist me on a project urgently. Task Components: - Designing intuitive and efficient user interfaces. - Developing custom functionalities as per the project's requirements. - Implementing data integration for seamless information flow. While the main purpose behind this project hasn't been detailed out, the chosen tasks indicate it would greatly aid in streamlining processes or improving data management. Hence, the project might have leanings towards enhancing the efficiency of business operations. Ideal Candidate: - Proficient in designing UI for OUAF. - Track-record in performing custom functionality development. - Proven skills in implementing data integration on OUAF. - A...

    $14 / hr (Avg Bid)
    $14 / hr Snitt bud
    4 bud

    ...several key changes to my existing mobile application. It's currently available on both iOS and Android, and I need the following enhancements: - Add new features: I want to introduce fresh, innovative functionalities to the app to improve user experience and increase its utility. - Improve app performance: The app should run more efficiently and smoothly. Enhancements could include faster loading times, smoother animations, and better overall responsiveness. - Changing text: I need to modify the text content within the app, ensuring consistency and accuracy across both platforms. The ideal candidate should have significant experience in cross-platform app development, a strong grasp of UI/UX design, and a proven track record in enhancing app performance. Pri...

    $483 (Avg Bid)
    $483 Snitt bud
    71 bud

    ...messaging system. Here are the specifics: 1. Profile Creation and Management: - Empower users to generate their profiles through an intuitive registration and login procedure. - Facilitate the input of personal data and professional skills during the profile creation process. - Enable continuous modification and updating of profiles for a tailored user experience. 2. Messaging System: - Embed a live messaging system to ensure instant and fluid communication. - Incorporate the capacity to attach files within the messaging system, enhancing data sharing. - Implement a feature that provides users with immediate alerts for new messages. The ideal candidate for this project should have remarkable experience in job board development, knowledge of real-time communication implementati...

    $493 (Avg Bid)
    $493 Snitt bud
    70 bud

    I'm seeking a skilled developer to set up Apple In-App Purchase functionality within two of my business-focused applications. The ultimate aim of these applications is to allow users to purchase online radio codes. Key tasks: - Implementing Apple In-App Purchase in both apps - Configuring the apps in my Apple Developer Console to take them live - Expertly integrating payment gateways for seamless radio code purchases Ideal Candidate: The perfect candidate will possess: - Proven experience in integrating Apple In-App Purchase into business apps - Expertise in payment gateway integration - A strong understanding of Apple Developer Console setup and operation - A background in business app creation, ideally with a focus on selling digital products like radio codes.

    $12 (Avg Bid)
    $12 Snitt bud
    7 bud

    I'm seeking an exam invigilator with at least a Bachelor's degree to administer an on-site exam in Bertrange, Luxembourg. This is a one-time gig with the potential for future opportunities. We provide test administration and accommod...hourly for the entire scheduled time, even if the exam ends early. We have a computer exam coming up where a test taker has been approved for a Reader and input assistance. For this assignment, you are required to be present on-site, sit with the test taker, and read the exam content aloud. You will then enter the answers as instructed by the candidate. The exam is taking place at a professional testing center in Truro, UK. Date: Tuesday, 23 April, 2024 Time: 9:30 am to 10:30 am We provide full training, and this assignment will pay $2...

    $22 - $25 / hr
    Lokal
    $22 - $25 / hr
    0 bud

    I'm experiencing a peculiar issue with my Laravel application, specifically on the Stock Analysis Page. Real-time stock prices from TradingView are failing to load and there are no visible errors to diagnose the problem. Ideal Skills and Experience: - Laravel expertise - Understanding of stock market data, specifically TradingView - Problem-solving attributes for mystery issues with no clear error messages Task Outline: - Diagnose why real-time stock prices aren't loading on the Stock Analysis Page - Resolve the issue so TradingView data loads seamlessly without errors.

    $16 (Avg Bid)
    $16 Snitt bud
    7 bud

    I have a website that needs some layout and design adjustments. - The site needs to be made responsive for mobile devices, tablets, and desktops. This involves adjusting ...tweaking in terms of text and picture layout. The aim is to ensure everything is evenly spaced and aligned, fixing any width issues that may be present. - On the SHOP page, the category section on the left needs to be turned off. - Also change all fonts across the site to match the one used on the homepage. - Finally, I'd like to double check all the settings and make the webshop ready to go live. I am looking for a web designer with experience in responsive design and layout, as well as a good understanding of font usage. The ideal candidate should be able to work efficiently and effectively to make...

    $11 / hr (Avg Bid)
    $11 / hr Snitt bud
    82 bud

    I'm looking for a versatile software developer who knows his way around Microsoft Visual Studio. Your task will be programming a Windows application in C#. Key deliverables: 1. Design and create a Windows application; good understanding of data management is a prerequisite. 2. Integration of file management, user authentication, and database functionalities. Skills and Experience: - Proficient in developing Windows applications in C# - Comprehensive understanding of Microsoft Visual Studio - Proven experience in integrating file management, database capabilities, and user authentication into an application. Your application should include your past work portfolio, your relevant experiences, and a detailed proposal for the project. This position demands...

    $44 (Avg Bid)
    $44 Snitt bud
    13 bud

    I'm looking for someone to collect data from bank employees in Bhopal, India. The data is to be collected with the help of Google Forms. There are a total of 11 banks and you are required to collect a minimum 11 responses from each bank, which means total of 121 responses. The response must be accurate. Ideal freelancers for this project should be well-versed in data collection methodologies and possess strong interpersonal skills to effectively engage with the bank employees. The successful candidate will be responsible for: - Conducting data collection from bank employees in Bhopal - Ensuring accuracy and integrity of the collected data - Delivering the data in an organized and structured format. The method of data collection can be discussed and agreed upon once the pro...

    $192 (Avg Bid)
    $192 Snitt bud
    5 bud

    ...**Backend Development:** Implement robust functional logic ensuring seamless data processing and workflows. - **API Integration:** Efficiently connect our platform with necessary external services and APIs for enhanced features. - **Database Management:** - **Data Migration:** Safely transition existing data resources to our new system without loss. - **Performance Optimization:** Continuously monitor and tweak the database performance for speed and reliability. - **Security Enhancement:** Implement top-notch security practices to protect data integrity and privacy. - **Frontend Development:** Design and execute a frontend interface that is customizable, intuitive, and responsive to user needs. **Ideal Skills and Experiences:** - Strong expertise in PHP and CodeI...

    $332 (Avg Bid)
    $332 Snitt bud
    56 bud
    Azure Web App Service Expert 6 dager left
    VERIFISERT

    Resolved Azure web app service error. 502 - Web server received an invalid response while acting as a gateway or proxy server. There is a problem with the page you are looking for, and it cannot be displayed. When the Web server (while acting as a gateway or proxy) contacted the upstream content server, it received an invalid response from the content server.

    $31 (Avg Bid)
    $31 Snitt bud
    4 bud

    Data Part Create Database and Pages for Below Create Pages to Add these Date and Update Details, Hotel - Name, Star Category, Country, City, Address, Contact, Email Tour - Tour Name , Country, City, Address Country - Pre Defined Countries City - Select 'Country', Add City Name Client - Client Name, Address, Contact, Email, Country, City Vendors - VendorName, Address, Contact, Email, Country, City Bookings - Booking ID (Auto Assign), Traveller Name, No. of Pax, Start Date, End Date, Select 'Client', Currency, Amount, Due Date Bookings part For Each Booking we want to add component (Hotel, Tours and Misc Service is known as component), We want to select services to be added. Add Hotel - Select 'Hotel', Check-in Date, Check-out Date, No. of Rooms Add Tour - ...

    $150 (Avg Bid)
    $150 Snitt bud
    28 bud

    Odoo expert needed Key responsibilities: - Establishing an effective CRM system that is tailored to my retail business needs. - Implementing a robust POS system that can efficiently manage sales, track performance, and generate reports. - Designing an inventory management system that optimizes stock levels and tracks movement. - Creating a customer management system that facilitates targeted marketing and customer relationship building. The platform for all these systems should be on-premises. Hence, the ideal candidate should be proficient with setting up on-premises solutions. If you have experience in a similar retail setup and can provide references, it would be a plus. Please bid only if you have prior experience in setting up these systems in a retail environment.

    $1152 (Avg Bid)
    $1152 Snitt bud
    126 bud

    I have code for login trading accound and fetch token data. I need to update more data from the code to my system.I need to collect live data from the web and candle stick, Mins Intervals are in Dropdown box, I can choose any minutes interval, I need you to collect Last 5 candle data from the Excel in the web and other details for each token, I will give token name in the excel, It will automatically display the rows of data. If i chanage time interval it will display those data only. Need ot automate the buy/sell order Note: I dont know about coding, If you install the code and run successfully at my system thereafter I will hire you and release the payment. If you agree this term you will apply this task Budet is 600 INR and Good review, Dont expect more I am not big fish. it is...

    $13 (Avg Bid)
    $13 Snitt bud
    7 bud

    I'm in need of an expert who can work on my site's SEO and Google Ads management. Key Points: - **SEO Enhancement**: My primary aim is to improve my website's search engine ranking. The current performance of my SEO is rated as 'poor', so this is a critical area of need. - **Google Ads Management**: In addition to SEO, I'd love to have a professional who can efficiently manage my Google Ads campaigns. Experience with this is a must. Ideal Candidate: - Proven track record of significantly improving SEO for websites with poor performance - Prior experience of managing Google Ads campaigns effectively - Strong analytical skills to optimize SEO and Ads for maximum visibility and engagement

    $2310 (Avg Bid)
    $2310 Snitt bud
    100 bud

    I need an experienced Ember.js developer to bring my project to the next level. The project requires multiple improvements. The project needs to be updated to the latest version of nodejs. I have included in the attachments the and to get an understan...environment is set up for Linux so good if you have that setup already on your local machine. Please don't ask what the budget as it is already listed in this posting, your bid is the budget. No payout will be made until the project is complete. Key Responsibilities: - Adding new features to the existing framework - Implementing performance enhancements - Providing updates Ideal Skills: - Proficiency in Ember.js - Prior experience with performance improvement - Expertise in feature development and updates

    $2223 (Avg Bid)
    $2223 Snitt bud
    139 bud

    ...technology team, you'll spearhead the design, implementation, and optimization of a robust software solution tailored to our retail operations. Responsibilities: Collaborate with stakeholders to gather requirements and translate them into technical specifications. Design, develop, and deploy scalable and reliable inventory management software. Conduct comprehensive testing to identify and resolve any issues or bugs. Optimize system performance for reliability, scalability, and security. Stay abreast of emerging technologies and industry trends in inventory management. Provide technical support and guidance to end-users as required. Requirements: Bachelor's degree in Computer Science, Software Engineering, or a related field. Proven experience as a Software Dev...

    $336 (Avg Bid)
    $336 Snitt bud
    7 bud

    I'm seeking the expertise of a professional ethical hacker who specializes in: - Network security - Web application security - Wireless security Unfortunately, I forgot to mention whether I need penetration testing, vulnerability assessment, or both. I also didn't specify the exact purpose of this ethical hacking project. Ideally, you should possess a strong ability to uncover any underlying vulnerabilities and offer strategic direction on how to heighten security measures across different platforms. Your approach should not only identify these weaknesses but also provide solutions on how to rectify them. While it's not specified, it'd be beneficial if you could also assess the effectiveness of existing security measures and provide recommendations fo...

    $309 (Avg Bid)
    $309 Snitt bud
    11 bud
    Amazon Dry Fruits Advertisement 6 dager left
    VERIFISERT

    I'm looking for a professional to create and manage an Amazon advertisement campaign specifically focused on ...make a purchase. Ideal Skills and Experience: - **Amazon Advertising**: Experience with creating and running Amazon ad campaigns is a must for this project. - **Market Segmentation**: Understanding of the target audience and how to create ads that appeal to them. - **Copywriting**: Ability to craft compelling ad copy that drives sales. - **Analytical Skills**: Proficiency in analyzing campaign performance and making adjustments to optimize results. The ultimate objective of this campaign is to increase sales of our dry fruits products. If you have a proven track record in successful Amazon advertising, especially in the food or health and wellness space, I'd lo...

    $141 (Avg Bid)
    $141 Snitt bud
    6 bud

    ... This positioning feature should be as precise as three meters. This app should be available on both iOS and Android platforms, and should include the following key features: - **Real-Time Tracking:** The app needs to have GPS tracking capabilities that enable real-time tracking of our drivers. This is essential for ensuring efficient route management and dispatching, and monitoring driver performance. - **Driver Communication:** The app should also include a driver-to-driver messaging feature. This will allow for better fleet coordination and communication, and foster a sense of team collaboration among our drivers. The ideal freelancer for this project should have experience in GPS positioning, mobile and desktop web app development, and have worked on projects with real-tim...

    $5057 (Avg Bid)
    $5057 Snitt bud
    148 bud

    I'm seeking an SEO expert to enhance my website's performance. My goals are to increase organic traffic, improve keyword rankings, and boost website visibility. - The target audience for my website is international, so familiarity with global SEO strategies is essential. - My website is somewhat optimized but still requires significant improvement. - I'm offering $20 monthly for a part-time commitment to this project. The ideal candidate should have: - Proven experience in international SEO - A track record of increasing organic traffic - Expertise in improving keyword rankings - A good understanding of website visibility enhancement - Strong communication skills as you'll be working part-time with me on this project

    $38 (Avg Bid)
    $38 Snitt bud
    55 bud