Web based examination system php työt

...devices, affecting layout, text sizing, and image scaling. Key Issues: - Layout Problems: Elements not aligning or displaying correctly. - Text Sizing Issues: Text not scaling appropriately for different devices. - Image Scaling Problems: Images not resizing or displaying properly. Please note, I have not specified particular pages, suggesting these issues may be site-wide. As such, a thorough examination of the entire site will likely be necessary. Ideal skills and experience: - Proficient in WordPress development and design - Strong understanding of responsive design principles - Excellent troubleshooting and problem-solving skills - Experience with CSS, HTML, and JavaScript - Familiarity with WordPress themes and plugins Looking forward to your proposals. Please include e...

I need a PHP website similar to with custom design and unique features. Users should have the ability to add advertisements and upload stories. The site will function like but will have a different layout and design. Key requirements: - PHP expertise is essential - Experience in building ad-centric platforms - Strong design understanding for creating a unique site - Knowledge in implementing user-generated content sections Your design input will be invaluable as the design for the new site has not yet been decided. I welcome suggestions for a modern and clean, classic and elegant, or bold and vibrant design. I also encourage you to think about the functionalities of the ad section, which have not yet been defined. Options could include user ratings and reviews

I need a PHP website similar to with custom design and unique features. Users should have the ability to add advertisements and upload stories. The site will function like but will have a different layout and design. Key requirements: - PHP expertise is essential - Experience in building ad-centric platforms - Strong design understanding for creating a unique site - Knowledge in implementing user-generated content sections Your design input will be invaluable as the design for the new site has not yet been decided. I welcome suggestions for a modern and clean, classic and elegant, or bold and vibrant design. I also encourage you to think about the functionalities of the ad section, which have not yet been defined. Options could include user ratings and reviews

...and management across fields such as internal medicine, surgery, and OB/GYN. Content Details: Each question must include: A clinical vignette or scenario. Five answer choices (one correct, four incorrect). Detailed explanations for each answer option (correct and incorrect). An educational objective summarizing the key takeaway. Categorization: Questions must be organized by subject, topic, and system into a CSV file. Provided Materials PDF on Question Creation: Explains the structure and style for high-quality USMLE questions. Q&A Book: Offers examples to replicate concepts in questions. CSV Template: Ensures consistent formatting for submission. Requirements Content Quality: Align with USMLE standards in content, format, and complexity. Maintain originality. Adhere to co...

I'm seeking a skilled developer who can integrate Pusher into my existing Laravel application, enhancing its chat functionality. The primary focus will be on implementing real...a shared chat room. - Real-time communication using text, voice, and video. - Private Chat: - One-to-one conversations between individual users. - Includes Video chat capabilities. - Personal Chat: - Private conversations for individual users, for personal notes or reminders. Ideal Skills: - Extensive experience with Laravel framework. - Proven track record of integrating Pusher into web applications. - Strong understanding of real-time chat functionalities. - Experience with implementing various chat features (text, voice, video). - Demonstrated ability to create engaging and user-friendly c...

I'm looking for a skilled PHP developer to create a dynamic web scraper for trading data. The scraper needs to collect price data from various sources, namely: - Stock market websites - Cryptocurrency exchanges - Forex trading platforms The data should be collected in real-time, so experience with PHP and web scraping is a must.

I'm looking for a professional to design a Permanent steel post system in my basement. The main goal is to stabilize the foundation. Key Details: - The focus will primarily be on the center of the basement. - The overall condition of the basement floor is generally good, but this project will help ensure it stays that way. Ideal Skills & Experience: - Extensive knowledge in structural engineering - Prior experience with permanent steel jack system installations. - Excellent assessment skills to determine the needs of specific areas. - - Familiarity with advanced tools and technologies for foundation repair. - Strong problem-solving skills to address unforeseen issues. - Adherence to safety protocols to prevent accidents.

READ CAREFULY: I'm looking for a professional who can help me find the PHP script for that websites that provide free social media engagement, specifically Instagram and TikTok such as: Instagram Likes Instagram Story Views Instagram Followers Instagram Video/Reel/IGTV Views Instagram Saves TikTok Video Views TikTok Video Likes TikTok Video Saves/Favorites TikTok Video Shares Some sample websites (they use the same idea and script only theme changed): It's important to find the source code in somewhere or find me the seller of this source code

I'm seeking a skilled developer to upgrade my existing web platform from PHP 8.0 and Laravel 6 to the latest Laravel 11 with PHP 8.3. The upgrade must not negatively impact current functionality. Key tasks include: - Reducing dependencies and removing obsolete libraries - Enhancing security, focusing on improving access control and implementing two-factor authentication - Optimizing the database, with a specific emphasis on improving query performance The ideal freelancer for this project should have extensive experience with PHP and Laravel, particularly with upgrading versions. Knowledge of database management and security enhancements is also crucial. Please provide examples of similar projects you have completed. You must be located between GMT-6 an...

I am seeking assistance in finalizing a case study on Microsoft Word, which should encompass a word count ranging from 3500 to 4000 words. The study should exhibit a comprehensive understanding and critical analysis of systems analysis and design methodologies. It is essential to identify and implement appropriate tools and techniques for system analysis and design that are pertinent to the specified scenarios. Additionally, effective communication with stakeholders is a crucial component of this project.

I am looking for a freelancer to upgrade an existing order management system from Access to SQL Server. Requirements include: • Development of a Desktop-based application in C#. • SQL Server integration. • Building a user-friendly interface. • Managing complex data relationships and calculations.

I'm looking for a developer who can code a simple, one-page, web-based bulk SMS sender for me. This application will interact with an API I already have. Key Features: - Ability to upload leads from an XLS file. - Dynamic message sending that can incorporate variables from my leads (e.g., #FIRSTNAME, #LASTNAME). - Basic user authentication. The project should be developed using JavaScript (Node.js), the preferred framework for this task. Ideal candidates should have experience in: - Web application development, particularly using JavaScript (Node.js). - API integration. - Creating user authentication systems. Please refer to the attached sample of my leads for understanding the project requirements better. This is a straightforward project for someone with the ...

...for a talented writer to help me articulate and create a compelling white paper for a new economic system I'm developing. Key Responsibilities: - Understand the intricacies of the proposed economic system - Craft a well-structured white paper that presents this system as a viable solution to current economic challenges - Ensure the paper is clear, persuasive, and accessible to a wide audience Ideal Skills and Experience: - Proven experience in white paper writing, particularly in the field of economics - Excellent research skills - Ability to simplify complex concepts - Strong persuasive writing skills The main purpose of this white paper is to propose this new economic system as a solution to current economic issues. The ideal freelance...

I'm looking for an experienced React Native developer to create a sample mobile app for me. The app's purpose is to research location-based services, required permissions and the limitations. Key features of the app include: - Triggering an API or local notifications when a user enters a specified perimeter (500 meters from a defined location). - Allowing the user to change the perimeter in the app settings or using a default value. The app should support both iOS and Android platforms. Ideal skills and experience for this job: - Proficiency in React Native. - Experience with creating location-based services. - Understanding of mobile app permissions and limitations. - Knowledge of both iOS and Android app development. Please note, the first question regarding t...

I am looking for a talented blockchain developer to create a Meme Coin on the Solana platform. This coin, inspired by popular Meme Coins like Pepe, primarily aims to entertain. Key Features: - Staking: The coin should have a staking mechanism to incentivize holding and participation in the ecosystem. Ideal Skills: - Proficient in Solana blockchain development. - Experience in creating Meme Coins or similar cryptocurrencies. - Knowledge in implementing staking features. Please include relevant examples of your previous work in your bid. Write "Kooka" as the first word of your proposal.

skoda suberb 1.5 TSI fren sistemi solidworks ile çizimi lazım tek tek parçalar halinde çizilecek en son montajlanacak (skoda suberb 1.5 TSI brake system needs to be drawn with Solidworks, single parts will be drawn and finally assembled)

Seeking an experienced professional developer to debug and implement upgrades to our Azure built Web App code. The focus will be on code optimization and user experience. Key Responsibilities: - Thorough examination of the code for optimization opportunities - Suggestions for improving code quality _ Implementation of code Ideal Skills and Experience: - Sheffield, UK or surrounding area based. - Knowledge of Azure / KQL - Strong background in code quality assessment and optimization - Excellent problem-solving skills and attention to detail - Able to work on own initiative and at speed

We are an IT service startup specializing in ERP development, web development, mobile app development, and AI application development. As a new and ambitious startup, we are seeking a results-driven influencer marketing agency to promote and sell our services on a fully commission-based model. No upfront payment will be provided. Target Market: USA, European countries Key Responsibilities: - Identify and collaborate with influencers across various platforms to promote our services. - Drive high-quality leads through influencer endorsements. - Innovate and execute engaging video-centric campaigns independently. - Close deals with influencers and ensure client purchases of our services. - Provide regular updates on campaign performance, including metrics like reach, engagemen...

I require a professional with a strong background in PHP to create an API for a mobile application. The main purpose of this API is to handle authentication, ensuring secure and reliable access to the app. Key Requirements: - Extensive experience with PHP and API development. - Deep understanding and practical knowledge of JWT (JSON Web Tokens) for authentication. - Previous experience in integrating APIs with mobile applications. Please only apply if you can demonstrate relevant experience and can deliver high-quality work in a timely manner.

I'm looking to develop a sophisticated AI recommendation system that primarily utilizes coupons as its data source. Key Responsibilities: - Design and implement a recommendation system that effectively leverages coupon data. - Ensure the system is capable of learning and improving over time. Ideal Skills and Experience: - Proven experience in AI development, particularly with recommendation systems. - Strong understanding of data analysis and machine learning. - Excellent problem-solving skills and creativity.

I'm looking to develop a sophisticated AI recommendation system that primarily utilizes coupons as its data source. Key Responsibilities: - Design and implement a recommendation system that effectively leverages coupon data. - Ensure the system is capable of learning and improving over time. Ideal Skills and Experience: - Proven experience in AI development, particularly with recommendation systems. - Strong understanding of data analysis and machine learning. - Excellent problem-solving skills and creativity.

I am seeking a seasoned ETAP professional proficient in conducting various power system studies, including load flow, short circuit, relay coordination, harmonics, and arc flash analysis. The primary focus will be on system design and optimization through arc flash analysis. Key Requirements: - Extensive experience with ETAP (Electrical Transient and Analysis Program) - Proficient in load flow study, short circuit study, relay coordination, harmonics, and arc flash analysis - Ability to provide system design and optimization recommendations based on analysis - Knowledge of safety standards and regulations related to arc flash Ideal Skills: - ETAP Power System Analysis - Electrical Engineering - System Design and Optimization - Safety Standards Co...

I'm in need of a service-oriented website for my business "Wo-Man with a Van". The website should be well-structured, user-friendly, and optimized for search engines to attract potential customers. Key Requirements: - Design and development of a service-based site - SEO optimization for enhanced visibility - Clear, concise service descriptions on the homepage Ideal Skills and Experience: - Proven track record in building service-based websites - Strong understanding and experience in SEO - Excellent web design skills with a focus on user experience

I'm in need of a modern, minimalist, symbol-based logo for my sheet metal and fabricated components business, which also involves steel trading. The logo should be bright and vibrant, standing out in the industry while still maintaining a professional appearance. Ideal Skills and Experience: - Strong portfolio of symbol-based logo designs - Experience with modern, minimalist aesthetics - Ability to work with bright and vibrant color schemes - Understanding of industrial aesthetics - Proficient in design software (e.g., Adobe Illustrator, CorelDRAW) I am running multiple businesses like perfect steel, perfect industrial agency, perfect Lasers. So I need a single logo that can be used for my multiple businesses.

I am in need of detailed Mechanical, Electrical, and Plumbing (MEP) drawings for an upcoming renovation project. The specific mechanical systems that will need to be included in the drawings are HVAC and Fire Protection. Ideal Skills and Experience: - Proficient in creating and understanding MEP drawings for submission to the State - Experienced in designing for renovations - Knowledgeable in HVAC and Fire Protection systems - Familiar with compliance and approval processes

I'm in need of a comprehensive document management system. This system will be responsible for storing, indexing, retrieving, and allowing search for various types of files, specifically text files, image files, and PDF files. Key Features: - File Management: The system should efficiently handle storing, indexing, and retrieving text files, image files, and PDF files. - User Management: A robust user management feature is required. This should allow us to control access to each file on a per-user basis. - Authentication: Users will log in using a simple username and password system. No complex systems like SSO or 2FA are required at this stage. - Search Functionality: Users should be able to search for files by their file name and through a full-text sear...

Implementation of Online Courses Platform We are seeking a developer or development team to implement an online courses platform with the following

I'm looking for a modern logo with a focus on typography and incorporating an icon or symbol. The primary use for this logo will be on my website. Key Requirements: - Expertise in modern, minimalist design - Strong typography skills - Experience with creating memorable, engaging icons or symbols - Understanding of web design principles to ensure logo suitability for a website Your portfolio should reflect similar projects and demonstrate your ability to create sleek, contemporary designs.

I'm a web developer seeking a skilled designer to create a unique Figma design inspired by a website template I admire. The design should have a similar modern and minimalistic aesthetic to: , but be distinctly different, to avoid copyright issues. The project involves designing: - A style guide - Header & Footer - 11 pages (content provided) - A single blog post (content provided) - A single portfolio item (content provided) - Blog archive - Portfolio archive Both desktop and mobile versions are required. I would also need guidance on animations for various elements. In terms of specific requirements, you will need to: - Use my predefined brand colours and fonts - Incorporate similar layout, structure, visual components, and animations from the inspiration website

I'm seeking a PHP professional with substantial WordPress experience to modify a specific email script. the price is fixed not per hour Key Tasks: - Edit the PHP file that manages the "processing status" email. - Customize the subject line of this email according to the "billing_language" field from the checkout form. - The email content must be tailored to align perfectly in both English and Arabic, as I have pre-written messages for both languages. Ideal Skills and Experience: - Strong proficiency in PHP, particularly in the context of WordPress. - Prior experience customizing WordPress email scripts. - Ability to understand and implement language-specific content seamlessly. - Familiarity with WordPress's checkout process and 'b...

I'm looking for a US-based YouTube Channel Manager (Mandatory) to oversee my channel focused on freelancing, digital, and business content. Mandatory: You need to have solopreneurship/LLC or similar. Croatian tax system is extremely stupid and hiring freelancers is considered tax evasion (Otherwise we need to pay tax on freelancers) so I need to work with people with registered entities. Key Responsibilities: - Posting content: I'll provide 5 videos to start, followed by approximately 1 weekly. - Crafting engaging, casual and conversational descriptions and texts for each video. (Optional) - Reviewing and advising on content: While I’ll provide the video and titles, I highly value your feedback. - Must be located in the US for at least a couple of weeks d...

I'm looking for a talented app designer to create a colorful and vibrant design for a task-based earning app. This app will reward users for completing tasks such as surveys and downloading apps. Key Requirements: - Design a user-friendly interface that encourages engagement and maximizes task completion. - Create a design that aligns with the colorful and vibrant style. - Ensure the design is scalable and adaptable for future updates and features. Ideal Skills: - Proven experience in app design, preferably for task-based earning or similar apps. - Strong understanding of creating engaging, interactive, and user-friendly interfaces. - Excellent skills in delivering designs in a colorful and vibrant style.

I am seeking a skilled developer to integrate 'Broadsign Control' software with my Laravel system. The integration should encompass the following key functionalities: - Content Scheduling: Users should be able to schedule content through the Laravel system. - Display Monitoring: Real-time display monitoring should be incorporated into the system. - Reporting and Analytics: Comprehensive reporting and analytics features should be accessible to users. Access to these functionalities will be granted to all registered users, so the system needs to be designed with user-friendliness and accessibility in mind. User authentication for the integration will be managed through API Key. Freelancers with experience in API integration and Laravel are preferred....

...seeking a qualified CISA auditor for a comprehensive full system vulnerabilities audit training of our customers. The primary goal of the training is to ensure our system meets regulatory compliance standards. Example systems and network are secured or not if gaps can guide the trainees how to fix this with live examples. Note: Its 1 Week in person offline audit in India so if you are residing in India and providing this services please then only apply. Key aspects of the project include: - Full system audit mainly compliance with cyber and information security - Compliance verification with FISMA and NIST standards - Post-audit certification provision The ideal freelancer for this project should have: - Extensive experience with full system audits - Prove...

I am seeking an experienced developer or team to create a custom trading platform designed for strategy creation, testing, optimization, and automation. This platform should enable the development of trading strategies based on my ideas, using AI/ML models for pattern recognition and optimization, and allow for backtesting with historical data. Integration with TradingView for visualization and strategy refinement is essential, along with the ability to automate trades based on validated setups. The system must support configurable parameters like trading times, asset classes, and trade duration (short-term and long-term) to build a diversified, sustainable trading approach. In addition to the trading functionality, I would like the platform to include AI-driven per...

I am seeking an experienced developer to connect my Laravel system with QuickBooks Desktop software. - Integration Type: The integration should synchronize data on a daily basis. i.e all records will be done on the system. At night, the system should send a backup to the quickbook desktop that is on a server. - Ideal Skills: Proficiency in Laravel, QuickBooks Desktop API, and data synchronization is essential. Experience with invoice management and expense tracking will be a plus. - Project Scope: The project involves setting up the daily data sync, ensuring all necessary information is transferred accurately and efficiently. Please provide your experience with similar projects in your bid.sal.

I'm seeking an experienced developer to analyze my PHP plugin using tools like PHP_CodeSniffer. The plugin's coding standards and security vulnerabilities need to be assessed according to the WordPress Coding Standards. The final deliverable should be a comprehensive report detailing coding violations, potential security issues, and recommendations for resolving these problems. Ideal candidates would have a strong background in PHP, WordPress plugin development, and a deep understanding of coding standards and security measures.

I'm seeking a skilled PHP CodeIgniter developer to install a CodeCanyon script sourced from the provided link. This project involves setting up the script on a DigitalOcean server and troubleshooting any potential errors that may arise during the installation process. Ideal Skills and Experience: - Proficient in PHP and CodeIgniter - Experience with DigitalOcean - Familiarity with CodeCanyon scripts - Strong problem-solving skills for troubleshooting errors - Experience with gaming scripts will be an advantage.

I'm looking for a talented Laravel developer to implement Phase 2 of my project. The key focus for this phase is new feature development. Key Requirements: - Develop new features in Laravel - Ensure all developments are in line with Zatca compliance standards Ideal Skills: - Proficient in Laravel - Experienced in developing compliant software - Strong problem-solving skills I Need you to create mini package to handle creating invoices, reporting to zatca. i'll embed your classes in our project and use them

I am looking for a skilled web developer/designer to build a professional website for my business that provides consultancy and implementation services in Power Platform, SharePoint, and other Microsoft technologies. The website should cater to clients in the UK and Europe, showcasing our expertise, services, and solutions. Key Requirements: 1. Professional Design: The website should have a modern, user-friendly, and responsive design. 2. Service Pages: Clear and detailed pages for each service (Power Platform, SharePoint, and other Microsoft technologies). 3. Target Audience: Designed for businesses in the UK and Europe. 4. Contact and Inquiry Form: A contact page with an inquiry form for potential clients. 5. SEO Optimization: The website must be optimized for search engines to a...

...there is mainly to schedule trainings, or department meetings when all employees are scheduled to be at work. Unless of course, they are on vacation, or call off for that date. When I make the schedules I have multiple factors that are considered. 1. I must consider which color groups are scheduled to work (Absenteeism and schedule sheet). 2. I must consider their seniority and job preference based on seniority (Preference sheet) 3. I must consider their qualifications (Preference sheet). 4. I must consider absences (absenteeism and schedule sheet). 5. I must consider all open spots on schedule (schedule format). 6. I must consider if there is an open spot that a “/” symbol, so we can fill that spot with overtime from the shift before and after (schedule format) The ...

I'm seeking a qualified chemist based in France for a short-term consulting project. The primary focus of this project is on regulatory compliance. Ideal Skills and Experience: - A degree in Chemistry - Extensive experience in regulatory compliance - Familiarity with relevant regulatory bodies and standards - Strong consulting skills Please share your qualifications and experience.

I'm looking for a seasoned game developer to create an engaging, interactive, web-based casino game with a live betting component. This game should be compatible on both mobile and PC platforms and include multiple mini-games and live betting on popular sports. Similar to these games Key Features: - **Diverse Gaming Options**: The casino game should incorporate a variety of mini-games, such as card games, puzzles, and arcade games. The ability to integrate API based games is a plus. - **Live Sports Betting**: The game should support live betting on cricket, football, and basketball. - **Web and Mobile Compatibility**: The game should be accessible and fully functional on both PC and mobile devices. Ideal Skills and Experience: - Proven

I have a Laravel-based MLM system that needs urgent attention. Implement Rebirth Fallback Rule for root users with no direct recruits. Track and Place Rebirths Dynamically under the latest instance of rebirth. Fix Position Tracking Logic in the downline hierarchy to reflect filled positions accurately. Update Income Distribution Logic to align with direct income, team income, and rebirth income rules. For the commission calculation, it should take into account the Issue 1: Root User Rebirth When There’s No Direct Recruit Problem: The root user completes their 12-member downline, qualifying for rebirth. However, rebirth requires placement under a direct recruit, and the root user has no direct recruits. Issue 2: Rebirth Under Direct Recruit When Rebirth Exists Problem...

...looking for a professional team to assist with upgrading my existing PHP-developed website and its associated mobile application. The focus of this project is on enhancing the database and functionality from version V1 to V2, with hands-on support required daily via AnyDesk. Currently, a sole developer is working on the project but to ensure efficient progress and boost productivity, I need a dedicated team. Key areas of this project include: - Database Optimization: The primary concern is enhancing the website's database for better performance. - Database Redesign: The database will require a complete data structure redesign alongside necessary upgrades. - Mobile App Support: The mobile application associated with this system will need assistance with bug fixes and...

I'm looking for a proficient Excel developer who can create a quotation software for me. This software needs to have several key features and functionalities: - Automated calculations: The software should be able to automatically calculate costs, taxes, and discounts. -Create Quotation format for LED Display with respect to Display size proportion ,Indoor / Outdoor pixel type , refresh rate and material type, WRT to specification should auto arrange. - Customer database integration: The software should be able to integrate with a customer database, allowing for easy retrieval of customer information. The ideal candidate for this project should have extensive experience in Excel, particularly in creating complex software. They should also have a good understanding of tax and discount...

...exciting new subscription-based website. The site will offer engaging content and will need to cater to several subscription models. Key Aspects of the Project: - **Content**: The website will have a variety of content, making it appealing to a broad audience. - **Subscription Models**: The site will have flexible subscription options - monthly, quarterly, and yearly. - **Key Functionalities**: - **User Account Management**: A seamless registration and login process, with options for user profiles. - **Payment Processing**: Secure, reliable, and easy-to-navigate payment systems. - **Content Access Control**: A robust system to manage what content is available to which users based on their subscription level. Ideal Candidates: - Proven experience in we...

I'm looking for a skilled developer to create an Android application and a corresponding web application for user enrollment and management in an academy setting. Android App Functionalities: - Aadhar Verification: The app will need to verify users through their Aadhar numbers. - Form Filling: Users should be able to fill out necessary forms within the app. - Photo Capture: The app needs functionality for capturing user photographs. Web App Features: - User Management: The web app will need to have features for managing users enrolled through the Android app. - Enrollment Data Management: The web app should be capable of handling and organizing enrollment data. Additional Authentication: - The system will require a standard username and password s...

I need an expert PHP developer to make comprehensive changes to my web app. The job involves modifying the front-end design, back-end functionality, and performing necessary database updates. Key Responsibilities: - Implementing Front-end Design Changes: While I haven't specified exact improvements, a keen eye for design and user experience will be beneficial. - Modifying Back-end Functionality: The primary focus will be on adding new features. This will require creativity and a deep understanding of PHP. - Performing Database Updates: As needed, to support the changes. Ideal Skills: - Proficient in PHP, front-end technologies (HTML, CSS, JavaScript), and database management systems. - Experience in full-stack web development. - Ability to identify...

...hierarchical structure, formatted as follows: H2: Topic 1 H3: Subtopic 1.1 H4: Detail 1.1.1 H4: Detail 1.1.2 H3: Subtopic 1.2 H3: Subtopic 1.3 H2: Topic 2 H2: Topic 3 H3: Subtopic 3.1 H3: Subtopic 3.2 H3: Subtopic 3.3 H4: Detail 3.1.1 H4: Detail 3.1.2 H4: Detail 3.1.3 - Each H2 represents a primary topic. - Subheadings (H3, H4, H5, etc.) are nested under their respective H2 headings. 2. Group-Based Article Generation: - Each H2 and its corresponding subheadings (if any) are treated as a single group. - Groups are sent to the OpenRouter API for generating content in Markdown format. - If an H2 has no subheadings, it is processed as an independent group. Problem Statement: While the script generates the outline correctly, the looping mechanism introduces errors during group proc...