Sample of cover page for project reportcông việc

We need 10,000 to 20,000 data, Uk Amazon Sellers Leads with work email, Postal codes, telephone numbers and websites, and Amazon store links, I do not have any example list to show how the leads should be so please carefully examine...Sellers Leads with work email, Postal codes, telephone numbers and websites, and Amazon store links, I do not have any example list to show how the leads should be so please carefully examine and only apply if you can fulfill and provide all the required information and we will also verify the leads as well, and if we like the quality of the data, we will buy 50,000 to 100,000 more leads as well, Make sure to enclose the sample data of UK amazon stores, without sample bid will not be read. As it is urgent and sure I will be looking...

I'm looking to develop a sophisticated software for managing the maintenance and service aspects of my heavy-duty truck fleet. The system should be able to accomplish the following: - Maintenance Scheduling: Implement a robust maintenance scheduling system to ensure timely servicing of trucks. Print report of due data - Inventory Management: Inventory control for trucks list, spare parts, ensuring they're available when needed. Warn when low count, - Service Reminders: Automatic reminders for upcoming services and maintenance checks. - Reporting and Analytics: Provide detailed reports and analytics for performance evaluation and decision-making. - User Roles: Multiple user roles - for fleet owners, store manager, ser...

I'm looking for an experienced Power BI developer to help me with an urgent data analysis project. The project encompasses various tasks including data visualization, report creation, and data modeling. The scope of the project is broad, including: - Analyzing sales data - Predicting customer behavior - Identifying trends and patterns The data sources for this analysis will be primarily database records. Ideal candidates will have: - Proficiency in Power BI - Strong background in AI data analysis - Experience with various data sources, especially database records Your task will be to transform raw data into actionable insights and visualizations. The project has a tight deadline, so I need someone who can work efficiently with...

I'm looking for an expert in Excel who can assist me with designing a functional cash flow budget. The primary aim of this tool will be to help me track and effectively manage two team members expenses. Key requirements for this project are: - Excellent proficiency in Excel, particularly in designing complex budgets and financial spreadsheets. - Experience creating automated functions within Excel, specifically for totalling expenses. - Ability to create a user-friendly and aesthetically pleasing interface that enables efficient data entry and report viewing. The freelancer would need to provide consistent updates and flexibility for potential adjustments during the process. This initiative is essential for my financial pla...

...Executive/Manager to join our team on a commission or freelance basis. The ideal candidate will have 2-3 years of experience in the software industry, with a focus on ERP software, app development, and website development. This role requires a strong ability to close deals and drive revenue growth. **Responsibilities:** - Identify and prospect potential clients in the target market segments. - Develop and maintain relationships with clients to understand their needs and objectives. - Present our software solutions and services to potential clients effectively. - Negotiate and close deals to meet sales targets and revenue goals. - Collaborate with the marketing team to develop strategies for lead generation and conversion. - Stay updated on industry trends and market devel...

We are a French web and mobile application development agency now structured into units to address specific customer needs. We have launched "Mocaccino", a unit specialized in the development of Shopify stores. Competition is fierce, and we need to redesign the agency's landing page to make it more attractive and effective in converting leads. We're looking for a UX/UI Designer to create a new visual identity for this unit and mock-ups for the landing page. If the assignment goes well, you'll also be able to design the website's future pages. We have prepared a brief to present the project and our needs:

...according to topics. please mention these detils in your bids *Are you native European Portugues from Portugal? *did you attache one minuet group audio sample on your cover letter? *Have you a native partner for this conversation project? (with our sinario same room conversation)? Requirments- Native Portuguese (Portugal) Working tool- Our APP + Phone call (skype) Conversation time- total 1.5hrs with 3-4 topics(about 20 mins for each topic)/2 persons as a group. Payout: $50 (2 person as a group) total 1.5hrs with 3-4 topics. Its a one time project only. NOTE-: For this project we need a 1 minuet group conversation as a sample. ( in sample you speak anything with your partner in same room . we just need to check ...

...capabilities; comprised of industry veterans, Confirmis business model is designed to overcome perennial lack of data (let alone quality data) to support effective decision making, particularly in developing economies. As a Site Verifier, you will be responsible for verifying a company’s existence through visual data by conducting a site visit to ensure that we provide reliable and accurate information to our client. JOB DESCRIPTION: • Conduct basic verification with the subject company’s authorized representative, such as line of business, key executives' name, etc. • Take pictures of the subject company and its vicinity, as per Confirmis’ standard operating guidelines. • Provide observation about the company...

I urgently need a business plan and cash flow forecast for my construction business. The main aim of this plan is to evaluate the profitability of my startup business. Key requirements: - Market Analysis: I need a comprehensive examination of the construction market, including competitors, demand, and trends. This will help to identify potential growth opportunities and risks. - Operational Strategy: I'm looking for a well-rounded operational plan that outlines how the business will function on a day-to-day basis. This should cover areas such as procurement, logistics, project management, and workforce planning. - Financial Projections: I need detailed, realistic financial forecasts that will help me understand how my business will per...

I'm seeking an experienced web developer to design and develop a landing page for my yoga classes. The landing page should be visually appealing and highly functional to increase sales and registrations for my classes. Key requirements: - Aesthetic: The page should feature a serene blue color scheme to match the tranquility of my yoga classes. Your design skills should reflect in creating an appealing interface that resonates with users. - Payment Integration: Paytm should be integrated for payment processing. You should have prior experience in integrating payment gateways and ensuring user data security. - Functionalities: The page should enable online class registration and display the class schedule. Alongside, it should...

Storecheck...that there is no possibility of cheating at any stage. The exam content and result are irrelevant to this exercise. You will need to be observant and discreet in order to undertake this visit. You need to remain in the test centre and complete the exam as if you were a genuine entrant. We have full guidance notes to assist you, which give a very clear background of the environment. The actions that you need to take are actions that test takers attempt, so do not be worried about carrying them out. After the visit there is a report to complete, it is not lengthy but you need to explain what you did and what were the staff responses. The visit lasts one and a half hours. Your payment is $90 per visit. Note that you will need a valid, photo and signature be...

I have a current project built using CodeIgniter 3 and I'm looking for someone to upgrade it to CodeIgniter 4. - The upgrade should cover all necessary functionalities such as user authentication, database management, and API integration. - I need someone experienced in CodeIgniter, with a strong grasp of both versions, to ensure a smooth transition. - Since there are third-party libraries and plugins used in the current project, it's crucial that these are taken into account during the upgrade process. Please provide your experience and examples of prior similar projects in your application. A detailed plan on how you intend to approach this upgrade would also be appreciated.

Set up a cypress test on my local and cover at least 15 test cases for the application. This will need to be done via ZOOm as we cannot provide access to project files due to data protection. My current setup is WSL and using docker to up and down the containers. I have already installed a Cypress on my local and it open cypress. Let me know if you are interested.

I'm seeking a talented WordPress professional to breathe new life into my existi...existing website pages. Key tasks include: - Editing and updating the text content on these pages. While this project doesn't currently involve rewording entire paragraphs, maintaining a consistent tone and style across any changes is essential. - Refreshing the images currently live on these pages. Unfortunately, I don't have a specific list of changes for these assets, so I'm looking for someone with a good eye for visual design who can suggest modifications themselves. Ideal candidates will have experience in WordPress content management and a knack for visual design. A strong understanding of written English is a must. Please get in...

I need a database for the UK market, with a focus on company names and Email ID. Key Points: - The project primarily involves creating a comprehensive database for the UK market - The main data points to be included are company names and Email ID's - Information can be extracted from Yellow Pages, Business Pages, Associations, Business Chambers and similar. - Accuracy of data, specially Emails - Sample File of Required database is attached - To start with we require 10,000 records. - Will pay INR 0.60 per record. Ideal Freelancer: - Prior experience in creating detailed databases - Proficiency in data gathering, scraping and organization - Familiarity with the UK market would be a plus Please include your relevant experience in your app...

...me create a comprehensive guide for soon-to-be moms. The guide should be user-friendly and highly informative. Key Focus Areas: - The guide should cover the essentials of pregnancy, including the various stages and developments. - It should include a section that helps expectant moms track important aspects during the nine months. This includes tracking doctor's appointments, baby's movements, and maintaining daily nutrition. - The guide should also provide a wealth of tips and advice. These should cover preparing for labor, baby care basics, and ensuring proper nutrition and supplement intake throughout the pregnancy. Ideal Skills: - Proven experience in writing comprehensive guides, especially in the health or parenting niche. - A...

I'm looking for a professional who can help me enhance my web system. The enhancements I require are as follows: User/ Vendor: - User Receipt Upload: Users can upload their receipts and manually key in specific data from the receipt such as Date, Amount, and select receipt category. - Point Tracking: Implement a feature that enables users to view their total points and pending points upon logging in and update point when redeem. - user can redeem receipt using point and print out real voucher. (Voucher inside must include exp date, company name, vendor address, Discount what kind product category, voucher id that vendor set.) -user can do voucher sorting like state, point, Vendor - can view when voucher is expired, how many people redeem your voucher Admin - Admin help vendo...

I'm in urgent need of an experienced designer well-versed in HTML5, CSS, React, and NodeJS to breath a new life into the design of a medical test report for my existing application. Key Points: • I'm keen to see a transformation in terms of updated font and color choices, with enhancements in the overall layout and organization further adding to visual appeal. • The design style I'm looking for is a blend of clean and minimalist, modern and sleek, and professional and corporate. • Time is of the essence for this project, requiring somebody who can deliver high-quality results ASAP. Ideal skills and experience: • Proficiency in HTML5, CSS, React, and NodeJS • A strong grasp o...

Myself and my daughter are getting matching tattoos. We love Billy Joel, and want lyrics to out favourite song. The lyrics we want are - "I'll meet you anytime you want In our Italian Restaurant" There are no album cover or sibgle images we want, but in my mind i wondered if there could be an italian style piazza restaurant table incorporated? We do not want colour just the classic dark blue tattoo colour ink.

I am in need of someone fluent in English who can help create a personal experience testimony video for me. This video would be set in a home environment, and you will need strong skills in creating such a setup. Key Responsibilities: - Cover all the positive aspects of my personal experience - Efficiently depict a home environment setting for the video Ideal Candidate: - Fluent in English - Expert in creating quality home environment backdrop - Prior experience in making testimony videos - Skilled in portraying the right atmosphere and mood for a personal experience testimony - Capacities to faithfully illustrate and enhance positive aspects of the discussed experience.

I'm looking for a seasoned digital marketing expert to assist me in boosting my online presence through a range of services. Key Tasks: - Social Media Marketing: You'll be responsible for promoting my brand on both Facebook and Instagram. This includes creating engaging posts, monitoring engagement, and running targeted ad campaigns. - Search Engine Optimization (SEO): Your job will be to enhance the visibility of my website on search engines. This involves optimizing content, fixing technical issues, and building backlinks. - Pay Per Click (PPC): I need assistance in managing my PPC campaigns to increase traffic to my website. The goal of this project is to: - Enhance my website traffic - Generate more leads - Boost brand awareness ...

...SEND YOUR SAMPLE VIDEO FIRST TO BE SELECTED I need someone to create videos on English Grammar on the topics given here in the attachment. It can be discussed in Chat. You should have a good, professional grade Mic. An electronic Pen is desirable. Topics for which you need to create the videos are Narration , voice change, parts of speech, sequence of tense, gerund, creating wh questions etc. Each topic should be minimum of 60 minutes length. You first need to explain the main concept, use examples and use some questions and then its answers with explanation.. also create 10 MCQ questions on each topic. Instructions to be in ENGLISH only. Use Screen recording Software and/or Whiteboard. VOICE MUST BE LOUD & CLEAR. NO BACKGROUND NOISE/SHAKY VIDEOS N...

I'm seeking a resourceful freelancer to help me create an engaging full-page introduction for an Electric Stairclimber Brand. check out Your output should combine high-quality text and captivating images to communicate key details about our product effectively. The written content should cover the following: - Our product's unique features: particular emphasis should be on its portability and the safety features we've incorporated. - The benefits of using our product. The project is ideal for freelancers with the following skills and experience: - Proven record in compelling sales/advertising writing. - Ability to source and use high-quality images. - Understanding of our target market to craft content that resonates wit...

I am looking for an experienced writer with a sound understanding of TikTok and marketing tactics to pen a comprehensive book. The book will serve as a guide for individuals aiming to utilize TikTok for their marketing endeavors. The ideal candidate will: - Have an in-depth knowledge of TikTok and its features. - Be familiar with the best practices for content creation on TikTok. - Understand effective TikTok advertising strategies. - Be proficient in interpreting and utilizing TikTok analytics and measurements for optimum results. - Produce an engaging and easy-to-follow guide suitable for a versatile audience from small business owners to social media influencers. No specific writing samples have been requested for this ...

...Facebook Community Moderator for a 7K-member group - POD (print-on-demand) brand. Responsibilities: - Build close relationships with the members, able to collect their insights via community - Implement the community moderation strategy, ensuring its effectiveness - Create attractive content to boost the engagement rate - Regularly review posts, comments, and media shared within the Facebook group to ensure they adhere to community guidelines and standards. - Collaborate closely with other moderators, administrators, and relevant teams to align efforts, share insights, and coordinate initiatives aimed at enhancing customer engagement and satisfaction. - Analyze group metrics, engagement levels, and member feedback to identify trends, opportunities, and areas for improv...

For this project, I'm seeking a skilled professional who is proficient at integrating composite animation videos. You'll need to be able to: - Generate an animation video with a file ported using Unity Unreal Exe. - Export the video as an mp4. - Complete the job ASAP. - Include these: 1 PLM 2 AI report 3 AI Foreman 4 QA 5 Safety 6 Collaboration with each in less than 10 seconds, you should add these 6 features to the video sequence, by creating a foreman, producing an ai report via chatgpt etc. So the total time would be less than 1 minute 30 seconds. Ideal skills and experience: - Proficiency in Unity Unreal Exe. - Familiarity with Windows mp4 format. - Attention to detail and excellent time management skills. The deadline is a high priority ...

I need help with my project. It is project related to Modeling for Business. Need to complete report using Jupiter notebook or Rmarkdown. Please bid only if you are expert in this.

I'm looking for an expert that can guide me through Oracle Cloud Infrastructure (OCI) and VCN setup via live demos. I'm seeking at least 5+ live demonstrations, that would cover the following key topics: - VCN Configuration - Subnetting and Security Lists - Connecting to On-premises Networks The ideal candidate should have a strong understanding of Oracle Cloud Infrastructure, particularly in VCN setup and networking. They should be able to explain complex concepts in a clear, easy-to-understand manner. Previous experience in teaching, training or knowledge transfer would be a plus. Please note that this project is focused on live demos and teaching, rather than a simple setup. The main goal is to acquire a deep understanding of these topics...

...clicking on a link sent from the site, the page opens only to the user to whom it was sent. If clicking on the link will enter the login information of another user, in this case it should not proceed. Configure the correct redirect to the necessary sites * insert a link to a document for download on one of the site pages (this document has already been generated and there is a download link on another page of the site) * Add generation of an invoice for using the site in pdf form (the form will be provided) with saving on the pages in the admin panel and on the user page. * Edit the account pages created in the admin panel, add a filter by user, month, account status and account number (these fields have been created, yo...

I am looking for a mid-level QA Tester from India, with experience in both mobile and web applications. The ideal candidate for the job should have: - Experience in testing iOS and Android platforms, as well as web portals - Capable of performing functional and design testing - Proficient in testing user registration, login/authentication, and other functionalities as per the logic - Ability to carry out thorough functionality testing as per the given requirements - Ability to report bugs and issues in the Google Spreadsheet with proper description and snapshots Please note that mid-level experience is a must for this role. The chosen candidate is expected to ensure the quality and performance of our mobile app and web portal.

Need C# developer to integrate zatca and below actions, Please contact if you have previous experience in zatca einvoice integration. Prefer to develop a rest Api to call zatca and input parameter will provide invoice in Json. Anyone has previous experience on zatca integration is ...if you have previous experience in zatca einvoice integration. Prefer to develop a rest Api to call zatca and input parameter will provide invoice in Json. Anyone has previous experience on zatca integration is preferred, we need to complete as soon as possible. 1. Create CSR certificate 2. Compliance Invoice with simulation and production 3. Clear Invoice with simulation and production 4. Report Invoice with simulation and production Note: We need source code, and it should be configured on o...

...focused on the treatment of back pain. Key points for the project: - The grant proposal is for the National Institutes of Health (NIH) and will be targeting the treatment of back pain. - I'm in need of a writer who can contribute to creating a grant that can potentially cover both Phase I and Phase II of the NIH grant process. - The proposal should include a focus on SBISR (Small Business Innovation Research) and technology development in the field of back pain treatment. The ideal candidate for this project: - Should have a clear understanding of the NIH grant process, particularly for medical research. - Experience in writing successful grant proposals, particularly in the medical ...

I'm in need of a developer to add a custom subscription multi-step ordering functionality to my new Woocommerce site. The site will be built using Divi, and I'm aiming for a modern and sleek design. The custom subscription package should allow customers to: - Choose delivery frequency - Select product combinations - Use a date picker to specify delivery dates The ideal freelancer for this job should have: - Proficiency in Woocommerce and Divi - Prior experience in setting up custom subscription packages - An eye for modern and sleek design This is a sample for reference: Looking forward to seeing your proposals. Thank you.

I'm in need of a skilled freelancer who can put together a comprehensive HR dashboard for me, to be updated on a monthly basis. The project involves: - Collating and organizing data: The dashboard should cover Attendance and leave records, Training and development, as well as metrics like age, experience, tenure, salary and location of our employees. Your ability to structure and organize these aspects will be key. - Creating an Excel-based system: I'm looking for a dashboard that's easy to dissect and understand. As such, I'd like the final product to be in Excel spreadsheet format. This means you should be very proficient in Excel, knowing how to integrate formulas, tables and other relevant features. - Monthly updates: The...

I need a 2100-word report on a business-related topic done as soon as possible. The specific aspect of business it should focus on is market analysis. deadline : 18 hours budget: 1800 INR

I'm seeking a talented graphic artist to design a cover for my hip-hop single, 'Mist Of It All'. The concept for this cover is important, and I have some specific elements in mind: - It should contain the symbolism of microphones, which is an important element tied to the song. - I want the overall mood to be uplifting and energetic, reflecting the rhythm and tone of the song itself. Ideally, you should have experience with and a passionate understanding of the hip-hop culture. A background in creating music-related or album cover art will be highly advantageous. Proficiency in graphic design software is obviously essential. Excited to see your ideas come to life!

I need a concise report that specifically focuses on the challenges of physical layer authentication, specifically in the underwater cybersecurity domain. Requirements: - I am seeking a high-level overview of the challenges. The report must provide a comprehensive but succinct understanding of the difficulties faced in this area. - The target audience for this report is cybersecurity professionals. So, the content should be tailored to be relevant and engaging for this group. Ideal Skills: - A deep understanding of cybersecurity, particularly physical layer authentication and underwater security challenges, is required. - Previous experience in writing technical reports targeted at cybersecurity professionals would be high...

...freelancer based in Germany to join our team as a Business Development Representative. In this role, you will be responsible for reaching out to potential clients, introducing our company and products, and scheduling physical meetings to further discuss business opportunities. This position offers flexibility and the opportunity to work remotely while contributing to the growth of our business. Responsibilities: - -Receive a list of target companies and research key contacts within these organizations. -Reach out to decision-makers via email, phone calls, and other communication channels to introduce our company and products. -Effectively communicate the value proposition of our products and services to potential clients. -Nurture relationships with prospect...

...a sophisticated landing page designed to help generate leads for my business Curiosity the Antidote LLC. Key words from the website TRANSFORM YOUR ORGANIZATION INTO A PERFORMANCE LEADER: Empower Leaders, Engage Employees, and Elevate Your Business Reputation Key Elements: - The main focus of the landing page should be to collect email address with a free resouce. It must be easily visible and intuitive to use, with a clear call-to-action. - The design must be elegant and sophisticated, in line with my brand's style. This includes color scheme, (gold, white, and Black) fonts, and overall layout. Here is the link to my webpage to see the style needed for this landing page. Ideal Skills: - Proficiency in web design, particularly for...

...Opportunity: 3D Rendering Artist for Caffeinated Gum Product Are you a talented 3D rendering artist with a passion for creating high-quality visual representations? We're seeking a skilled individual to produce stunning renders of our innovative caffeinated gum product. If you have an eye for detail, a knack for realism, and the ability to bring digital products to life, we want to hear from you! Responsibilities: Utilize our provided 3D GLB file of the caffeinated gum product to create photorealistic renders from multiple angles. Apply textures, lighting, and effects to achieve a lifelike appearance that showcases the product's features and benefits. Ensure consistency in branding and visual style across all renders. Collaborate cl...

As an individual seeking to enhance the visibility of my informational and educational website for adults, I am seeking a professional off-page SEO professional. Your tasks: - Implement effective link-building strategies - Promote the website's content - Use social bookmarking for a wider reach - List the business on multiple platforms - Backlinks are on unique and c-class IP not the same -100 business listings on unique data The ideal candidate should possess a strong understanding of the latest off-page optimization techniques. They should be capable of meeting project goals while working independently. Demonstrated experience in content promotion, link building and social bookmarking is a must. Understanding the adult l...

...the design and development of an extensive range of high-end, multifunctional furniture products. This project includes the design and engineering of various types of luxury beds, sofas, chairs, tables, dressers, cabinets and more. We deal in furniture of all types and styles; Italian, European, modern, contemporary, futuristic, and multifunction (everything furniture). The designer should incorporate very detailed features in each design such as ; material quality, comfort, solid structural build (inner/outer), ergonomics, convertibility, functionality (electric recline, components, wiring, mechanical/mechanism placement and operations). The furniture will target a diverse audience, therefore the designs should be versatile, but maintain ...

...looking for few Product Testers based in USA to test our products and give us your insights on the product performance. The products would be mainly Pet & bird related toys or other products. We'll cover all the costs during this process & after the testing, you can keep the product & no need to return it. For this job, you only need to experience our product and let us know how you feel about the product so we can make improvements. You have to test the product and share photos or Videos during the testing of this product. After you receive the product, we will give you a week for the test duration and preparation of report. We will be sharing the format of the report. You just have to add your words. If...

Technical Report of automatic tyre inflation system. Need people who have worked in the same

I need a single page website built to display token data in real-time. The data points I'm interested in are price and value fluctuations, transaction history, and holder information. You can get an idea from this page: All Data API is ready, just need to connect data from tradingview widget and frontend. Ideal Skills and Experience: - Proficiency in frontend web development - Experience with real-time - websocket data integration - Understanding of blockchain and token data - Design capability for a clean, user-friendly UI

I'm in need of a hard-hitting investigative journalist who can help me uncover and report on corruption and corporate scandals. Key Requirements: - Your primary focus will be on corporate scandals and corruption - Your research and investigation skills must be top-notch - Experience in handling sensitive information and maintaining confidentiality is a must - The ability to present your findings in a compelling and newsworthy manner is crucial - Experience with uncovering fraud and unethical business practices will be highly valued. Your investigative work will be centered around a specific case: a car dealership scam. Your task will be to delve deep into this scam, uncover the intricacies of the fraud, and present your findings in a manner that is both engagin...

I am looking for an experienced web designer capable of creating an engaging and user-friendly one-page site for my freight brokerage business. The purpose of the website is to provide comprehensive information about our services to our target audience, which primarily consists of individual shippers and freight agents. Key website features needed: - An informative section about the brokerage services we offer. - Easy navigation for users to find the information they need. - A 'Quick Quote' form to engage potential leads. - Possible quick animated video to welcome clients and/or agents Key skills and experience required: - Proven track record in web design, preferably with experience building one-page information sites....

I need a professional resume and a cover letter for the technology industry. - Resume: The resume should be tailored specifically for the technology sector, highlighting my skills, experiences, and qualifications in this field. It should be formatted in a professional and eye-catching manner. - Cover Letter: Aside from the resume, I also need a compelling cover letter. The cover letter should be engaging, well-written, and tailored to the technology industry. It should effectively introduce and complement the information in the resume. I am looking for a resume writer who is experienced in the technology industry and has a track record of producing professional resumes and cover letters. It is crucial that the documents are...

I am seeking expertise for my VLSI Magic project that requires: - High-complexity circuit design, calling for an in-depth understanding of intricate electronic circuit schematics. - Proficiency in logic synthesis, particularly in multi-level logic synthesis which is vital for my project. Part 1: Verify the design using a logic design tool. Part 2: Implement your design using Magic VLSI layout tool to generate your project layout Part 3: Test your design using irsim to simulate your project. Project submission should be two items: a- A report PDF file. (PDF) b- A compressed file containing all your codes, simulations, and results. (.zip, .rar)

We need to create a page builder Kindly don’t apply if you can’t do it and without reading and checking all details Word file is all the functionality note that there will 4 roles in this Pictures are some sample design pages Need to be done fast