Small window using virtuemart componentงาน

ทำการเรียกข้อมูลไปยังหน้าเว็บโดยใช้ Stored Procedure ที่ทางเรากำหมดให้ โดยใช้ Component ของ DevExpress

ลง vps บน window 2008 พร้อม module ที่จำเป็น

I need a solution that will automate a post to my own managed facebook group. I have a php script that creates the post ready to be sent to the group. The script is run unattended once a day via a cron job. My post will contain text and images. I had a previous system that used an fb app using publish_ to_group that I believe is no longer supported. I need a replacement solution. Happy to use any technology (not just FB app) that may achieve the same result. Please do not bid unless you fully understand the issue and can suggest an alternative. I will not pay for 'learning on the job' so please ensure you know the solution and can implement it within your quote before bidding. DO NOT BID AN AMOUNT YOU UNWILLING TO DO THE WORK FOR.

I have Excel sheet in the are all products added with all the categories in it. I will also share a word file in which I will add that specific category and you have to take out the data from sheet and create the image in Photoshop. I will also give you product images with it's specific name. You have to only remove background and add text and image according to the data. The person must have latest Photoshop and have to create one sample image. You have to leave the space also for the main video and have to choose a shape or space according to the data Here are the links to sample: My budget is Rs.50 per image. There are 10-11 images which you have to create and I need it by today. This will be regular work per week to create 10-15 images.

...string The code is a string of a content of a file tsx or jsx file. the function should first analyze and see what imports of a React components are missing, then add the missing imports according to the importsMapping. Example 1: if a code is this: export default function App() { return <div> <Box>some content</Box> </div>; } the function should detect that an import of Box component is missing, and it should look at the importsMapping["Box"] to get an import to add to the file example 2: if the code is this: import {Box} from "@mui/system"; export default function App() { return <Stack> <Box>some content</Box> </Stack>; } the function need to detect that Stack is missing ...

I'm in need of a WordPress WooCommerce expert to develop an additional admin page for my website. The core functionality should be focused on price management within the product management section. Key Project Tasks: - Implement an admin page in my site structure - Create a price management module within this page The critical component of this page should be setting product prices. Your expertise in WooCommerce and understanding of admin panel functionality will be pivotal in this project. Ideal Skills: - WordPress and WooCommerce proficiency - Prior experience with admin page creation - Strong understanding of eCommerce price management I'm looking for a streamlined, efficient solution that allows me to control my product pricing intuitively. Your ability t...

I'm seeking an expert in reinforcement learning to develop a control system for a differential robot in a simulated environment. The project will be implemented in Python. Key Requirements: - Develop a control system using reinforcement learning for a differential robot - Implement and test the system in a simulated environment - Provide clear documentation and code comments Ideal candidates should have: - Proven experience in reinforcement learning and robotics - Proficiency in Python and familiarity with any relevant libraries - Ability to work in a simulated environment If you have experience in these areas and are confident in your ability to deliver a high-quality project, please reach out.

...for a skilled analyst to delve into a set of transcribed texts and identify patterns and trends for my projects. Requirements: - Task: To conduct a comprehensive analysis of the transcribed texts using NVivo software - Purpose: The main aim is to identify patterns and trends in the data. - Data Organization: The text data is organized by topic. Deliverables: - A comprehensive report: This report should include a statistical breakdown of the identified patterns and trends. Ideal Skills and Experience: - Proficiency in NVivo software: The ability to effectively navigate and analyze data using this tool is essential. - Strong Analytical Skills: The analyst should be able to identify patterns and trends within the data. - Excellent Reporting: The report should be comprehe...

I have two images where I need some retouching work done. The shots were taken in front of a window, which has led to issues with color and haze in the pictures. Key Requirements: - Skin Blemishes, wrinkles, and red-eye need to be addressed - Color Correction: I'm looking to achieve a natural tone in the images. - Haze Removal: The images have a haze due to the window. This needs to be removed to enhance the overall quality. I'm looking for a skilled photo editor who has experience with color correction and haze removal in particular. The ideal candidate should have a portfolio that demonstrates their abilities in this area.

I'm looking for a skilled web developer to create an e-commerce site for my small business. The depending details are yet to be finalized, hence your inputs will be highly appreciated. The job description includes: - The website will have a variety of products to sell. We are not yet certain whether we'd be focusing on only physical products, digital ones or services, or a mix of all. So, an adaptable, scalable site is key. - I haven’t yet decided who will provide the content – it may be us, it may be the freelancer we hire or both. This means the ability to either work with provided content or to generate it independently is a must have. - We are uncertain whether we need an inventory management system yet, so previous experience developing and implementing t...

hi . I am looking for a special and creative person to build a simple website interface that deals with the API of a webs...account and can be integrated with an interface to operate through it This is to import my templates and tools into and display them on my site Anyone submitting an offer is requested to review the website and information to learn how to deal with the API The application interface is required to display and call up forms to display through my site in a private chat window from here can read about Api Note: I have some websites and application html templates that the programmer can use as a ready-made template. Just programming and api integration with these templates

...Details page which shows Column, Footing, Beam schedule ::  Elevation Plan will NOT BE COMPLETE unless both building drawings show placement according to land slope/contour A. BUILDING A - 55' x 58' on a Steeply slope lot - SEE ATTACHMENT :: FLOOR PLAN IS COMPLETE but Window sizes not decided, once decided, modify on floor plan :: I will share youtube render video and we can decide window sizes together ::  Foundation + calculations, Elevation, Section and Roof Plan + calculations B. BUILDING B - 30' X 60' Garage with small bedroom suite - SEE ATTACHMENT :: FLOOR PLAN IS COMPLETE::  There are TWO incomplete Foundation plans, ONE incomplete - Elevation, Section and Roof Plan without calculations 2. Both buildings share...

I'm in need of a skilled web designer to give my ecommerce website a modern ...on the site as that detail was skipped, but the designer should be prepared to handle a flexible number of products. Additional features or functionalities were not specified, however, innovation is encouraged. Proposals suggesting interesting functionalities such as product search/filter options, wishlist functionality, or customer reviews/ratings will have an edge. Communication is a key component for the success of this project, therefore, a prerequisite for starting the job is to hop on a call to discuss the project details further. The ideal freelancer should be an expert in web design, with proven experience in ecommerce platforms. Highly creative, responsive and deadline driven individuals...

Home Remodeling and Redesigning: Modern home space and kitchen on ...- Incorporating lighting fixtures to enhance the ambiance Living Room: - Redesigning the layout to optimize seating and entertainment areas - Choosing furniture pieces that suit the style and size of the room Bathrooms: - Maximizing natural light through window expansion or skylights - Incorporating storage solutions for toiletries and linens Window Widening for Natural Light: - Assessing the feasibility of widening existing windows or adding new ones - Selecting window styles that allow for maximum natural light - Considering window treatments that offer privacy without sacrificing light Include a 3D sketch and furniture placement and provide a visual representation of the spaces, includi...

I'm looking for a IoT/WSN security professional to address a Hatchetman attack vulnerability on a RPL protocol network using 6LoWPAN technology. The goal is to implement two robust security solutions that to prevent hatchetman attack occurrence in RPL routing protocol. Ideal Skills and Experience: - In-depth understanding of RPL routing protocols, Contiki 3.0 and Cooja Simulator - Hands-on experience with 6LoWPAN wireless technology - Proven expertise in IoT/WSN solution design and implementation Key Tasks: - Implement Hatchetman attack in Contiki 3.0 - Implement Resolution of Hatchetman attack using 2ACK scheme. - Implement Countermeasure to Hatchetman Attack using Multiple Encryption - Evaluate the two solutions with each other and with the standard RPL (RFC...

I'm currently renovating a residential property that's under 1,000 sq ft. I'm seeking a professional engineer who can provide me with expert guidance and plans for the renovation. Specifically, I need your expertise in: - Foundation and Structural Area: I'd need you to assess the current structure, ensure it's sound and make recommendations for any necessary changes. - Electrical Systems: Help me design an efficient, safe electrical system for the property. - Plumbing and HVAC: Assist with the planning and implementation of plumbing and HVAC systems. Ideal candidates for this project should have experience in residential projects, particularly in renovation, and be familiar with local building codes and regulations. A good understanding of cost-effective yet qua...

...narrative. • Experience with Figma for delivering each screen and workflow. • Spanish-speaking candidates are welcome. • Fluency in AngularJS development is a plus. Job Expectations: I expect to collaborate with a creative, innovative, and detail-oriented freelance professional who can transform our application into a visually stunning and user-centric hub. I also anticipate receiving individual component deliveries organized in folders per view for subsequent developer use. How to Submit Proposals: Please include in your proposal details of your relevant experience, examples of previous work showcasing your ability to address the mentioned aspects, and your approach to executing this specific project. Additionally, provide a cost and timeline estimation for the ...

...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. - Detailed documentation on the operation and configuration of the system. - The solution should include necessary files and documentation to deploy each component separately (Backend and Frontend) in AWS Lambda functions, Docker containers, or any Serverless service on AWS or GCP. Additional Details: - Detailed examples and specifications will be provided to guide the project development. - The desired delivery timeframe is approximately 6 weeks from the project's start date. - Positive consideration will be given to the ability to pr...

...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. - Detailed documentation on the operation and configuration of the system. - The solution should include necessary files and documentation to deploy each component separately (Backend and Frontend) in AWS Lambda functions, Docker containers, or any Serverless service on AWS or GCP. Additional Details: - Detailed examples and specifications will be provided to guide the project development. - The desired delivery timeframe is approximately 6 weeks from the project's start date. - Positive consideration will be given to the ability to pr...

I'm seeking skilled Fusion 360 designers to help in the creation of new aftermarket automotive parts. The product range includes engine components, suspension parts, and exterior accessories. The undertaking involves: - Understanding requirements for each component, - Creating designs that integrate seamlessly with existing parts, - Producing Fusion 360 drawings for fabrication (usually CNC machining). The ideal candidate should have: - Experience in automotive parts design, - Extensive familiarity with Fusion 360, and in many cases heavy use of Reverse Engineering from scan data - Comprehensive understanding of industrial machinery for automobiles, ASME Y14.5 GD&T - An inventive approach towards new product development. This project is meant for those who have a...

...Incorporate a section for detailed product descriptions and images • Ensure the website design aids easy update of content The ideal freelancer for this project would be experienced in business web development, content management systems and have a knack for visual design. A background in product marketing could prove beneficial, as understanding how to attractively present product details is a key component of the job....

I need a window decal measuring 500x300mm, rectangular or oval, containing the text and an Italian flag, the edge can be of any type, straight or with decorative details, I attach images

I'm in need of a logo for my new tech company, "Forward Flow". I imagine it to be simple in color, leaning towards a minimalistic style with both an icon and text component. - Would like the design to use two "function - "f" symbols as well as possibly incorporating an arrow for the "Forward Flow" name of the company. Would like the first design to be black and gold. **PLEASE SEE THE FUNCTION SYMBOL. THIS IS A MUST**** Key requirements: - Design a simple color scheme for the logo. (Black + Gold) - Create a logo that is minimalistic in style. - Develop a logo that incorporates both an icon and text. - Would like the design to use two "function - "f" symbols as well as possibly incorporating an arrow for the "Forward Flo...

I'm looking for a professional mobile app developer who can create a robust e-commerce application similar to Fashion Nova. The app is intended to be developed for both iOS and Android platforms, with an additional web app component. Key Features: - User Registration and Login - Product Browsing and Search - Shopping Cart and Checkout - Vendor Page - Order Tracking - Admin Panel - Dynamic Backend Analytics - Personalization - In-App Chat for Customer Service I am not looking for specific design or branding requirements at this stage. I'm particularly interested in your experience with e-commerce app development, as well as any unique features or functionalities you can suggest to enhance the user experience. Please provide any relevant examples from your portfolio.

I am looking for a skilled graphic designer to create a logo for my business. Key Requirements: - Experience in logo design is a must - Expertise in translating concepts into a visual representation - Proficient in using design software - Ability to take on feedback and make necessary revisions The ideal candidate would have a strong portfolio demonstrating a clean, modern design aesthetic. Your logo will be a key component of my brand identity, so attention to detail and creativity are paramount. If you have prior experience in logo design and you're confident in your ability to deliver a high-quality result, I'd love to hear from you.

As a burgeoning small business, I need a professional to create an E-commerce website for me. The design and functionality should resemble the clean and straightforward structure of amaryahenna.com. The purpose of this website is to sell my products online seamlessly. Key Information: - Type of Store: E-commerce - Volume of Products: Less than 50 items - Website Example: Site Requirements: - Intuitive navigation and easy to use checkout system - Mobile-friendly design - Product pages with high-quality images and detailed descriptions - Engaging and easy-to-update blog section - Basic SEO settings Missing Elements: - I have yet to develop a logo and complete brand identity, so your expertise will be crucial in this area. Ideal Candidate: - Proven experience with WordPress

I am looking for a talented videographer to create a fun and exciting Instagram video of my holiday. - The content should include a variety of video clips that have a smooth transition with appropriate music that I will provide...final product needs to be less than a minute long, yet express joy and pleasure, capturing the best moments of my holiday. Ideal skills and experience for this job includes proficiency in video editing software, creativity, and a keen eye for detail to ensure the essence of fun and excitement is captured accurately. Your ability to evoke emotions through visual storytelling will be a key component to success in this project. Let's capture the true spirit of joyous holiday fun! Please let me know your Instagram name or email so that I can send yo...

Description: I am looking for a skilled Matlab developer with expertise in machine learning and signal processing to build a cryptocurrency trading signal application. The core of this project will be to implement an LSTM (Long Short-Term Memory) neural network that utilizes techniques like Fourier transform among other signal processing methods to generate buy and sell signals based on historical cryptocurrency data. Key Project Requirements: - Data Handling: The application should be able to import and use cryptocurrency data from this Kaggle dataset: Binance Full History. - Signal Processing: Integrate Fourier transform and other signal processing techniques to analyze the data. - Model Implementation: Develop and train the LSTM neural network model to predict potential buy and sell ...

Automated report using dashboard in Excel The report interface should be similar look to the pic attached. The Excel file for data source should be able to be used for Power BI. Two dashboards: 1- for multiple project management status reporting 2- for ad-hoc task management The data source is in an Excel sheet with a manual entry

I'm looking for a skilled professional who can create a 1-minute live video on our website. This live video will be streamed using the front camera and will serve as a product demonstration. The ideal candidate for this project should have experience in: - Video production and live streaming - Web development (to integrate the video on our site) - Understanding of live video interaction features Key requirements: - Create a 1-minute long live video - Use the front camera - Support real-time comments - The video should be engaging and visually appealing - Ability to optimize the video for web streaming - Ensure the video is compatible and functional across different web browsers - Deliver a product demonstration that is clear and concise - Implement interactive elements to enh...

*If you are interested in the job, please send your CV together with a 1-2mins video introduction about yourself. Job Description: We are seeking a proactive and adaptable Personal Assistant to join our vibrant team, offering crucial support to our CEO across a myriad of administrative tasks. This New Delhi-based position encompasses a substantial remote work component (80%), with a select set of responsibilities requiring travel within Delhi (20%). Embark on a rewarding journey filled with professional challenges and personal interactions, ensuring a unique and fulfilling work experience each day. Job Responsibilities: • Undertaking research initiatives on various subjects for the CEO, collecting, analyzing, and summarizing data and trends to furnish accurate and comprehensi...

Technical Knowledge For Front End You can create it using Nextjs For the backend side, Express Create a responsive form website layout that adjusts seamlessly across various devices. (Web, Tab, Phone), and explain how would you approach designing a layout that maintains consistency and usability across different screen sizes, from desktops to smartphones? Create a validation in each form field please create a minimal 6 field (Plus point if the validation from back end side). For example: Name should contain the alphabet, not a number. (If it’s number show error message) The phone number contains a number. Etc. (you can create your field & own rules) * Create a reusable component. Add CSS animations to enhance user experience. Design and create an API to provid...

I'm in need of a skilled professional who can create a live video for me. This video will specifically cater to my corporate conference and will be used on Reels and YouTube shorts. The main focus of this video will be on the audience interactions rather than the typical keynote speeches or panel discussions. Key requirements: - Creation of a live video for a corporate conference - Emphasis on capturing and showcasing audience interactions - Targeting Reels and YouTube shorts for the final video Ideal skills and experience for the job: - Proven experience in creating engaging live videos - Understanding of the dynamics of corporate conferences - Ability to highlight audience interactions in a compelling way - Familiarity with the format and requirements of Reels and YouTube short...

As a tennis academy, we have developed a unique tennis grip with an adhesive layer of Velcro on one side, and an additional component that attaches to the racket handle using a Velcro strip. The main purpose of this design is to teach people how to correctly re-grip their rackets in a comfortable and efficient manner. Key requirements: - The design should be suitable for recreational use. - The target audience for this product is tennis academies. - The ultimate goal is to provide an exceptional grip for the players and make the regripping process easier and more understandable. Skills/Experience required: - Experience in designing sports equipment or accessories, especially for tennis. - Knowledge of materials suitable for grip and handle attachment. - Ability to create a...

I'm in need of a seasoned Apache Solr professional to help me implement search functionality for my project. The ideal candidate has excellent expertise in Apache Solr and can effectively optimize search functionality for text documents. Key responsibilities: - Upgrade from Apache Solr 3.6 to a version supporting wildcard search, Windows server - Multi cores with replication - bulk import via CSV - core creation/deletion across master and slaves Ideal skills and experience: - Prior experience implementing Apache Solr for search functionality - Proficiency in data indexing and faceted navigation with Apache Solr - Strong understanding of optimization techniques for search functionality - Excellent problem-solving and analytical skills - Good communication and collaboration abilities

...Magento website. - Creating backup files that encompass all necessary aspects of my website. - Completing a full site transfer using the created backup files to preserve integrity and functionality. You must have: - Expertise in website migration, particularly Magento sites. - Proficient knowledge in creating and using backup files. - Familiarity with hosting environments, specifically VPS. - Strong understanding of Magento 2. I am open to guidance on best practices for site transfers and backup file creation. This project requires a careful and knowledgeable freelancer, who can ensure a smooth and successful website transfer. Need help with setting up a Magento site using back up files. The freelancer should be able to do the following: - Help me set up my h...

I need a web scraping expert to scrape Title, Price, star ratings, delivery window from a specific e-commerce site on a regular basis. - The scraping should cover a range of products, ideally with the ability to specify categories for tracking. - The data needs to be scraped frequently, so automation and scheduling will be crucial. - It's important that the extracted data is accurate and up-to-date as this will be used to inform pricing strategies and customer service. The ideal freelancer for this project should have: - Proficient experience in web scraping, particularly from E-commerce sites. - Proficiency in programming languages like Python or R for automation. - Good understanding of data management and quality control. - Ability to deliver a scraping tool that is user-f...

Need a multi user login where multiple users can connect to my server and access the server using apache gaucomole. It has to be scripted (csh) based as I need to execute on local machine once it is working.

I'm seeking a skilled Python developer proficient in Selenium or other scraping tools, AI and others API integration. The main tasks in this project include: - Integrating APIs: You'll be responsible for seamlessly integrating the following APIs: - Send/reveive data from trained AI - Collect data using scraping - Payment Gateway - Other websites: API to integrate with other websites - Developing B2B Features: We're looking to expand our platform to cater for B2B transactions. Your role will be to create and incorporate features that facilitate B2B interactions. Key skills and experience required: - Proficient in Python - Experienced with Selenium or other scraping tools - Proven track record with API integration - exchange data with AI I'm look...

I am seeking a skilled web developer with a proven track record to create my project. My aim is to develop an informational website targeting predominantly small business owners. The site needs to reflect a corporate style, echoing professionalism and reliability. Ideal Skills: - Strong command on website structuring for information accessibility - Knowledge of corporate aesthetic - Experience in creating websites for professional, business-oriented audiences Job Details: - Develop a visually appealing, corporate-styled website - Design site for easy navigation and efficient information dissemination - Ensure optimized site performance and responsiveness across devices - Implement SEO best practices for improved visibility. Please provide samples of your previous work, par...

I am currently looking for a skilled Python developer who can assist with an API integration project. The tasks to be completed will primarily involve: - API Integration: The key responsibility will be to integrate the Google Maps API into our system. - Location Tracking: The primary functionality we require from the Google Maps API is location tracking. This will be a key component of the project. Ideal candidates should have: - Proficiency in Python: A strong understanding of Python programming is essential for this role, as the primary development language will be Python. - API Integration Experience: Experience with integrating APIs, particularly the Google Maps API, would be a significant advantage. - Familiarity with Location Tracking: A background in developing solutions th...

I require a proficient and ClickUp builder to automate critical steps in our client acquisition process. The intention is to minimize manual intervention while enhancing our efficiency considerably. Key Tasks: - Designing and implementing an automated system that effectively captures and tracks leads: For now, our website captures leads through a contact form, and we want this process to be automated. - Integrating with our current email marketing service: Currently, we use MailChimp for email marketing. Thus, experience in MailChimp integration is a plus. - Tailor-made sales funnel automation: The new workflow must streamline our sales funnel to ensure a smooth transition from leads to potential clients. Skills and Experience: - Excellent in and ClickUp - Past experience in lead c...

I'm looking for a system that can help me generate donor communications more efficiently for Key Features: - **Email Automation:** I need to be able to send multiple emails at once to eligible donors. - **Scale:** Though my current requirement is for less than 100 emails at once, I would like the system to be scalable for future growth. - **Content:** The emails will mainly include multimedia content, like images and videos. Ideal skills and experience for this job: - **Email Marketing Expertise** - **Proficiency in Marketing Automation Tools** - **Experience with Multimedia Content in Emails** - **Understanding of Donor Outreach and Communication**

I'm looking for a talented appointment setter to help me schedule product demonstrations over the phone with small businesses. - Service Type: I provide phone services. - Target Audience: Small businesses. Your role would be to engage potential clients and set appointments for product demonstrations. The primary goal is to showcase the usefulness of our products. Ideal Skills and Experience: - Experience in telemarketing or appointment setting. - Strong communication and negotiation skills. - Understanding of the telecommunications industry is a plus.

I've developed an application using Vue3 and TypeScript and I need an expert to deploy it on Heroku. Ideal applicants will possess the following qualifications: - Extensive experience in TypeScript and Vue3 - Proficiency in using Heroku Node.js Buildpack for deployment - Knowledgeable in setting up applications that require no additional environment variables Please note that there are no API keys or access credentials needed for the app to work correctly. I appreciate your time and look forward to seeing your proposals. FYI this is github link FYI, below error is occuring 2024-05-09T03:44:59.526204+00:00 heroku[web.1]: State changed from crashed to starting 2024-05-09T03:45:04.980734+00:00 heroku[web.1]: Starting process with command `npm run dev`

Redesign few pcb with given spec

We are seeking an experienced packaging designer who can create attractive and functional packaging art for my cookie business. The material will be lay-flat packages, with th...Design - Prior experience designing flexible, lay-flat packets - Efficient in communication, decision-making, and revisions - Familiarity with cookie-based products is a plus REQUIREMENTS: 1) Please ensure all fonts are outlined and artwork is embedded into the template 2) All colors set up in CMYK + White 3) Artwork sent back in AI format 4) please leave a section clear and indicate it will be a window section Provided is a rough mock up of the simple design we require. We will also need you to provide multiple options for the font on the front of the packaging as we are still searching for satisfaction ...

...proficiency in C# and C++, especially in relation to the .NET Framework 4.0. The project's primary aim is to craft a game launcher that offers multi-platform support, but it is crucial to emphasize that our focus for now is on Windows. In case of it's in C++, the following note are required: - The launcher is meant to launch a process (The game exe) also it meant to have a settings window, and support window that contains a "Subject" - "Email" - "How may we help?" and all those data to be sent in HTTP Get request. If it's C#, I only ask for the [Designed Form] as mentioned * Buttons needs to be smooth and high quality animated while mouse hover and mouse click. Key Qualities to have: - Proficiency in C# and C++ - Familiarit...

I'm looking for a skilled individual to assist me in the creation of a humanoid robotic hand. The primary purpose for this project is for research. Key Aspects: - Precision of Movement: The designed han...is a requirement. - Plastic Components: The majority of the hand will be constructed from plastic components. Ideal Skills and Experience: - Proficiency in Robotics: Experience in robotics projects is crucial. - Servo Motor Control: A good understanding of how to control servo motors for precise and varied movements. - 3D Printing: Ability to design and 3D print parts for the hand. - Plastic Component Construction: Experience in constructing and integrating plastic components. I'm looking for someone with a proven track record in this field and who can bring innovative...

A small mobilr Application and deliver very fast