I am looking for a student or junior UI/UX designer to create an engaging user interface for a SaaS website, greeting a seamless experience for our users. Key Responsibilities: * Use UI design kit out in the market to speed up the design. Design Preferences: * Incorporate a modern and minimalist design approach to make the website look contemporary without creating clutter. * Use vibrant colors thoughtfully to enhance the user experience while keeping a professional and corporate feel throughout. Ideal Skills (Optional): * Strong proficiency in website UI/UX design * Previous experience with SaaS platform design * Familiarity with modern, minimalist, and professional design approaches * Good understanding of color theories and user interface trends The applicant should demonstr...
I want to design a logo that has a coconut tree with a woman standing at the bottom holding a Bauhinia 我想设计一个图标，海南椰子树下面站着一个女人，手里托着紫荆花
LiteHTTP是一个 HTTP 机器人，正在 C# 中编程，基于 .NET 2.0 依赖项。 需要重新基于.net4.0依赖项。
My company makes umbrellas. Now my website wants to be revised, and I need a front-end designer to do the revision design for my website. I hope this designer is from the United States, with at least 3 years of experience in website design, and at least 10 cases. If this cooperation is pleasant, we will have many opportunities for other projects. Our future is looking forward to creating with you, thank you.
要求： [*] 审计过知名开源项目高危及以上漏洞； [*] 有 CNVD/CVE 编号的优先； [*] 懂得团队协作与保密意意识； [*] 可远程办公； 待遇： [*] 根据项目以及成果计费，预计年 20-40w；
我们公司是亚马逊的移动电源和收集配件的大卖家， 需要YT或FB的红人推广，红人的观众需至少大部分是US，UK或Canada的。 或者可以帮我们在US,UK或Canada的Deal网站po我们的亚马逊的coupon code或deals.
我们需要一位经验程式编写员编写软件破译ireserve-hk(sms registration code system) 1.于上午8点ireserve开店前(UTC+0800)提取PH code(text code) +/or 2.提取PH code后即时破译产出registration code +/or 跳过sms验证页面 请于1-3天内完成 , 请电邮给我进一步讨论
我需要一名经验程式员编写软件破译irserve-hk(sms registration code system) 预订网站: 要求: 1.于上午8时开店前提取PH code 及/或 2.于上午8时开店前提取PH code 及 获取sms验证码 及/或 3.提取PH code后即时破译计算出sms验证码 及/或 4.破译跳过sms验证页 需于1-3天内完成
I am looking for someone who can help our company in creating facebook, google+, social media platform and manage it. Ability to read, write and speak Chinese is a requirement.
SQL注入/代码审计/数据库权限/渗透测试技术 接渗透单子高手，联系电子邮箱：aqcp#（#改成@）语言要求：中文 熟练掌握各种内网渗透测试工具与相关知识，精通常见安全攻防技术：sql注入、xss、文件上传、文件包含、命令执行等漏洞 熟悉linux、unix、Windows、oracle、J2EE等各种环境下WEB的安全配置与安全检查及WEB漏洞防范； 熟悉各种脚本语言(asp,php,jsp,java,net、perl、python等)具备独立挖掘web安全漏洞与入侵手段 具备一定的网络安全知识，对网络安全结构、系统漏洞、入侵检测、病毒防护等有深入理论基础和实践经验； 熟悉渗透测试黑客攻防的步骤、方法、流程、熟练掌握各种渗透测试攻防工具有实际渗透经验者优先； 求大虾接单，脱裤，要求，电话，手机，姓名，邮箱，其他的一概不要。每笔单1000美金起步，根据站的难度而定价格,具体可以详谈，寻找长期合作. 态度认真、中介勿扰,请技术实力说话。
As the project owner, I'm currently in need of a skilled HTML developer capable of creating an engaging, informative website. The target audience includes business professionals, thus it's essential to maintain a professional aesthetic. Key Features Required: - Blog Section: Relevant to our content, a platform for updates and articles is vital. - Contact Form: For audience interaction and feedback gathering. - Image Slideshow: To create interest and visually represent our message. Required Skills and Experience: - Proficient in HTML and CSS - Proven experience in web development - Excellent visual design skills - Understanding of SEO principles - A portfolio demonstrating previous work. Despite your skills, we value open communication and effective collaboration. We l...
I need a Kubernetes professional with deep knowledge of eBPF to create an advanced presentation. Your main task would be to demonstrate the practical implementation of eBPF within a Kubernetes environment. The a...informative, and relevant to their current knowledge level. Key components of the presentation would include: - A comprehensive overview of eBPF basics - The process of integrating eBPF with Kubernetes - Real-world use cases of eBPF specifically in Kubernetes environments The ideal candidate for this project will not only have experience with Kubernetes and eBPF, but also a strong background in creating educational materials or presentations. Your ability to articulate complex technical information in a clear and understandable way will be crucial to the success of thi...
I am urgently seeking a talented graphic designer to assist with a series of design projects, including logo, flyer, and packaging design. The ideal candidate will: - Have valuable experience in creating compelling and professional logos, marketing flyers, and product packaging. - Employ creativity and clear understanding of brand identity to promote our brand, market our products, and to effectively advertise events. This is an urgent project and needs to be completed ASAP. Therefore, a candidate who can work swiftly and efficiently, without sacrificed the quality, should apply. You should be open and responsive to feedback, ensuring the overall project aligns with our vision and meets our standards. Let's bring our brand to life together.
I'm seeking a graphic designer to craft a professional profile for my business endeavors. Key Aspects: - The profile's core purpose is to enhance my professional image within the business sector, so I need someone who understands the nuances of creating a design that's suitable for such context. - The profile should include a comprehensive portfolio of past projects. This is a critical element, as it will serve as a visual representation of my capabilities and experience, helping to build credibility and showcase my expertise. Ideal Candidate: - You should have a solid background in graphic design, with a portfolio that demonstrates an ability to create sleek, professional visuals. - Experience with designing profiles, specifically for business purposes, would be...
I'm seeking a talented graphic designer to help me create a visually appealing portfolio. This portfolio will consist of mockups and various pieces of graphic design work. Key Requirements: - Proficient in a diverse set of graphic design tools and software. - Prior experience with creating professional portfolios. - Familiarity with the graphic design industry. - Able to design in a way that showcases skill, creativity, and versatility. The main goal of this project is to create a portfolio that will help me secure design jobs, particularly in the graphics sector. Your design should be able to attract potential employers and showcase my skills in a compelling and professional manner.
...each individual hotel, and I want to open them using a custom button rather than the native link of the accordion. If I post an offer for a hotel, that offer should only be visible for that specific hotel. However, at the moment, it is shown in all hotels, even though I select the hotel to associate these offers with from a select box in the control panel during the posting phase. This involves creating custom queries for WordPress. I usually use PHP/MySQL, but for this new version of the site, I am using WordPress. The total budget is 15 USD it's not a demanding job for an expert. I am attaching images to clarify what I am talking about. You can see button "dettagli offerta" and i want to use this for open and close the accordion where there are offers details ...
I'm seeking a professional to conduct a thorough structural survey of my over 100-year-old residential property (Not Listed). I have observed co...detailed, easy-to-understand report that highlights the issues found in the property - Recommendations: Would appreciate receiving that the property is not viable for renovation and a Replacement Dwelling is a better alternative. Ideal Skills and Experience: - Structural Engineering: Previous experience in conducting structural surveys of old properties is essential - Report Writing: Proficiency in creating detailed and easy-to-understand reports - Problem-Solving: Ability to provide replacement recommendations to address the issues found. Please include in your proposal your relevant experience and how you plan to approach the sur...
I'm looking to hire a highly skilled logo designer to create a visually captivating logo that will represent our brand and establish a unique visual identity. The ideal candidate would have extensive experience in creating minimalist yet engaging logos that incorporate abstract shapes. Key Requirements: - Proficiency in designing logos populated with abstract shapes. - Ability to work with specific color schemes which will be provided. - A strong understanding of the dynamics of colors, fonts, sizing and positioning, to create a balanced, catchy and harmonious logo. - Creativity and originality are paramount to this task. I look forward to collaborating with you to create a logo that is not only aesthetically pleasing, but that perfectly encapsulates the ethos of our compa...
...combination of text and icon logo for our business. Additionally, I will need these graphics animated. Key project details include: - Logo Style: Modern and Minimalistic - Logo Type: Combination of text and icon - Animation: Both logo and icons - Deliverables: High-quality, engaging animations Ideal skills and experience for this job include: - Proven expertise in graphic design, particularly in creating modern and minimalistic logos - Proficiency in animation, with a strong portfolio of previous work - Ability to effectively convey brand messaging through design - Strong communication skills and a keen eye for detail If you're a creative professional who can bring my vision to life, I'd love to hear from you. Please include samples of your previous work in your pr...
I require a proficient architect with in-depth knowledge of architectural representation. This unique project involves designing 2D architectural drawings and 3D images for a RomanThermae building. Skills and Experience Needed: - Proven expertise in creating high-quality 2D architectural drawings - Ability to generate realistic 3D visualizations of structures Please include relevant portfolio examples in your proposal. The successful applicant will be required to work closely with me to ensure the designs accurately represent the concept of the design.
I need a talented designer to create compelling A4 color posters for marketing & promoting some Pharmacy services. The poster should be o...until we are happy with final design. Key requirements: - Design: An original, eye-catching, professional design that aligns with our brand and messaging. - Content: The poster should effectively communicate our marketing promotions and engage the target audience. - Format: The final output should be in A4 size, ready to be printed for distribution. Skills and Experience: - Proven experience in creating marketing materials and posters. - Proficiency in graphic design software. - Strong understanding of colour theory and visual communication. Final text for each poster will be provided Please submit your portfolio of relevant work along ...
I'm looking for a proficient Python coder who can develop a program that effectively reads numerous reviews and generates a concise summary, encapsulating the main points in 300 words in multiple bullet points. Key F...a multitude of reviews. Required Skills and Experience: - Expert level understanding of Python programming. - Knowledge and experience in SQL querying is a necessity. - Experience with Natural Language Processing for summarization. - Familiarity in dealing with relational databases. - Prior experience with text summarization or related projects is a definite advantage. The task is not only to code but also to gain understanding of reviews and to generate a meaningful summary. So, anyone who bidded should be proficient in data analyzing and processing along w...
I'm looking for an experienced character designer who can bring my vision to life. I need a character designed in a semi-realistic style, with the defining characteristics of a clever magician. The design will be used primarily for toy modelling, so it should have a tangible, three-dimensional appeal. Key requirements: - Skilled at creating lifelike and detailed characters to capture realism - Experience in designing characters for toy modelling preferred - Creative approach to designing a unique magician character Your creative input is important, although the design must remain true to the magician concept. Please include examples of your previous work, highlighting any relevant character designs.
I'm looking for a seasoned research writer with proficiency in technology, specifically FPGA software systems. The focus is on creating a comprehensive research paper on an FPGA based Accident Detection and Prevention Software. Key objectives include but are not limited to: - Understanding of real-time accident detection - Expounding on measures for accident prevention - Thorough explanation of the emergency communication system The ideal freelancer should be knowledgeable about artificial intelligence and its implementation in accident detection systems. Critically, they should be able to dissect and present complex tech language into a comprehensible writing. Evidence of past research work in this field will be a major plus.
I'm on the hunt for a skilled illustrator to bring...style. Think bright, fun, and engaging, with a touch of whimsy to captivate young readers. Details: - Required Illustrations: I will need 6-10 original illustrations for the book. - Theme: The illustrations will need to match the storyline and be engaging for young readers. Ideal Skills: - Experience in illustrating children's books, particularly for the 4-7 years age group. - Proficiency in creating colorful and whimsical cartoonish illustrations. - Ability to work closely with the author to ensure the illustrations accurately reflect the story. If you have experience working on similar projects and believe you can deliver high-quality, engaging illustrations, I'd love to hear from you. Please include samples ...
...professional who can review and optimize my .net Core 6 codebase, enhance the software architecture, and bolster the database security. Key Responsibilities: - Conduct a comprehensive code review to identify inefficiencies, bugs, and areas for improvement in the .net Core 6 code. - Improve software architecture to ensure scalability, maintainability, and performance of the application. - Implement robust measures to enhance the database security, in line with industry best practices. Ideal Skills and Experience: - Extensive experience in .net Core 6 and Entity Framework. - Proven track record of conducting code reviews and optimizing codebases. - Expertise in software architecture design and implementation. - Strong understanding of database security and experien...
I have documents that need to run code on Stata and need a proficient code writer. I will pay $400 for the contract
I'm lookin...upcoming event with a sense of exclusivity and elegance. - Target Audience: The target demographic for this video is young adults, specifically between the ages of 18 to 30 years old. - Style: The video should exude sophistication and elegance, capturing the essence of the event in a refined manner. Ideal Skills and Experience: - Proficiency in video editing software. - Previous experience in creating promotional videos, particularly for events. - A keen eye for aesthetics and ability to deliver a sophisticated and elegant visual style. - Understanding of the preferences and tastes of young adults. The successful candidate should be able to conceptualize and execute this project with a focus on achieving a refined and elegant aesthetic that will appeal to our t...
...help create a new logo and branding identity for my brand, BrandAId. Key Requirements: - Design a logo that conveys professionalism and trustworthiness - Create an overall branding identity that aligns with this messaging Target Audience: - Brands - Businesses Ideal Skills and Experience: - Proven track record in logo and branding design, particularly for B2B audiences - Familiarity with creating designs that communicate professionalism and trustworthiness - Previous experience in corporate branding would be a plus This is our current website and branding, we would like to rebrand and focus on something more professional. Ideas for the icon could be a compass included somehow or anything that you think might work for a company that specializes in retail marketing displays...
I need a modern residential floor design for a 20x35 space based on the attached naksa. I'm looking for a skilled designer to create a modern floor design for my residential space. You should be able to interpret the attached naksa and create a design that complements a modern aesthetic. The requirements for this project include: - Expertise in creating modern floor designs - Ability to work with 20x35 size - Familiarity with residential design Ideal Skills/Experience: - Proven experience with floor design - Strong visual and spatial awareness - Proficiency in working with residential spaces - Portfolio of modern design work - Good communication skills to understand and deliver on my vision.
I'm in need of a skilled animator who can create a manga-style cartoon that will last for a final video of 2 minutes. - Style: I'm specifically interested in manga-style cartoon aesthetics. Your portfolio should demonstrate your proficiency in this distinct style. - Medium: The final output will be used for animation. Any experience with creating animations for web or broadcasting will be a huge plus. - Duration: Ideally, you should have experience in crafting lengthy animations. The project requires a production that's more than 2 minutes long. Skills required: - Proficiency in manga-style cartoon creation - Animation creation and editing - Experience with long-form animation projects This project is in long term.
I'm in need of a skilled designer to create a realistic, 3D movie poster for an Indian film. Your expertise should ideally stretch across creating vivid, dynamic and evocative designs that powerfully communicate the theme of the movie. Key Requirements: - Experience in designing gripping, engaging movie posters, especially for the Indian market. Sharing links to your previous work would be appreciated. - Ability to work with a specific color scheme - black and gold in this case. These colors must be noticeably dominant in the design. - The design must intelligently incorporate Indian cultural symbols, cinematic elements and character portraits. These distinct aspects of the film should be beautifully woven into the poster in a captivating manner. The goal is to have a mov...
I'm in need of a skilled professional to create a No-Code app on the Adilo platform or any other. It shall has three interface. 1. User Interface 2. Management Interface 3. Service Provider Interface App Idea: Chat based profile matching for Carpenters to work on hourly basis. User Interface Step 01 Signup Form with Phone, Email, Address Step 02 A chat box would open up with basic questions as; • Date for Booking • Time Period for Booking Step 03; Within the chat box the next question would be regarding the work profile Users can text to match profiles. Example: I want Bamboo Artisans Step 04: The Chat box will show all profiles for Bamboo Artisans as in the Directory or excel file Excel would be as simple as Skill Set, Profesional Profile Step 05:...
...data is paramount, so it's important that the dashboard is developed with necessary security measures in place. This is to secure the data which officials input and populate for sharing. - The dashboard will be publicly accessible so it should be able to handle a high volume of traffic. Ideal Skills and Experience: - Proficiency in web development, particularly in creating real-time data visualization. - Previous experience in creating dashboards for live events or elections would be a big plus. - Knowledge of data security protocols to ensure the dashboard is protected from any potential threats. - Strong UI/UX skills to design an appealing and user-friendly interface for the dashboard. - Experience in developing mobile responsive websites. -Should have map technolo...
I'm looking for an experienced full-stack developer to help me build a trading website. The website will focus on assets like forex and cryptocurrency. Key Features: - The user registration...display that's reminiscent of a trading exchange. Trading Functionalities: - I want the website to allow Buy and Sell orders for users. - Real-time price updates are a must. Design Preferences: - The front end should be modern and sleek. A clean, minimalistic design is what I'm aiming for. Skills and Experience: - Proficiency in both frontend and backend development. - Prior experience in creating trading platforms or websites. - Strong understanding of forex and cryptocurrency trading. - Ability to implement real-time price updates. - UI/UX design skills to deliver a mo...
Here is a brief description of my project. (Please note: I will not reply back to auto response messages. Also please post the actual price not a price just to get my attention.) My project consists of two items....module that is already created its job is when it receives a specified RF signal from Part B it activates its predesigned function and then is ready for the operation to happen again. Think about this, a dog has a transmitter on his dog collar when the dog gets within two or 3 feet from a water valve that valve turns on for approximately 30 seconds and then turns off. That’s not exactly what I’m creating but it’s a good visual reference. If this is something that looks like it could be easy enough to make I may try to sell them but first looking for on...
I'm in need of an Expert Excel programmer to help design a user-friendly Excel sheet focusing on stock and ledger management. Specifically, I'm interested in: - Incorporating Automatic Calculations: The ideal cand...Excel's data integration and interconnection capabilities is necessary. - Essential Data Fields: My Excel sheet needs to include specific data fields like stock name, quantity, and cost price for seamless inventory and ledger management. This project requires an excellent grasp of Excel functions, automation, and data management. Experience in inventory management systems is a big plus. Skilled in creating user-friendly, efficient, and interconnected Excel systems, you should be able to tailor an Excel sheet to deliver exactly what we need for smooth led...
I'm in need of a skilled and creative Laravel developer who can design and implement a visually stunning and functional website. The project involves the following: - U...functional website. The project involves the following: - Using Laravel and Bootstrap to create a responsive and user-friendly website - Implementing a sleek and modern design to attract visitors - Ensuring the website is easy to navigate and works across all devices I'm seeking a freelancer with: - Proficient skills in Laravel and Bootstrap - Proven experience with web design, particularly in creating visually appealing websites - Strong knowledge of UX/UI principles to ensure optimal user experience If you're confident in your ability to deliver a high-quality, aesthetically pleasing website, I...
I am in need of a Python developer to create a bespoke frontend ...warehouse status and stock levels should be clearly available. User Interface Design: - List View: I envision the inventory management interface as a list view with search and filter options for easy access and manipulation of data. Ideal Skills and Experience: - Proven experience in Python frontend development - Strong understanding and experience in Inventory management systems - Proficiency in creating user-friendly UIs with search and filter options - Ability to distill complex data into clear and actionable insights - Previous experience with warehouse management systems would be a great advantage. If you have the skills and experience needed, I'm looking forward to hearing from you and discussing the p...
Hi, I would like to create a script that: stage 1 -uses the Soslcan pro API -identifies new SOL tokens and send info to my server -creates telegram message with certain data (fdv,liqui...provide real-time updates and send Telegram message and second part of project a buy order ideally based on certain criteria. ideally stage 1 completed in two weeks. Key Requirements: - Proficiency in Python or Java programming - Prior experience with API integration, notably Solscan - Ability to deliver the project in two weeks The selected freelancer will demonstrate a solid understanding of creating real-time updates using APIs. Knowledge and experience with Solscan API will stand as a significant advantage. I'm looking for someone with a diligent, high-performance work ethic that resp...
...The site needs to provide detailed portfolio displays, tracking of financial performance, and the ability to manage financial transactions. Basically the job is to either maintain existing front end code and/or make a website from scratch. Make one page of a website at $2/page (negotiable max $5/page) each, there may be in total 10-30 pages. Here's an example $3/hr for maintenance work (long term work). Interview questions : Please tell us more about your working and some success experience ? Please tell me some of your experience in reading someone else's code and then start working on it, How do you feel about that? What did you achieved? Do you agree with the budget and job description ? Please tell me what is your daily activities, are you a full time f...
I'm in need of a skilled fashion designer to craft compelling titles an...important that the copy resonates with this audience. Style & Tone: - The desired tone is trendy and fashion-forward. Your writing should reflect the latest fashion trends and styles, while maintaining an engaging and persuasive quality. Ideal Candidate: - Experience in ladies fashion is a must-have. Please refrain from applying if you do not have this specific background. - Proven track record of creating compelling and engaging copy that drives sales. - Understanding of SEO principles is an added advantage. - A keen eye for the latest fashion trends and styles. This is a great opportunity for a fashion enthusiast to make a significant impact on our sales performance. Looking forward to seeing you...
I am looking for a skilled 2D animator to create digital animations for educational purposes, targeting teenagers. The ideal candidate should have experience in creating engaging and informative animations suitable for this age group. Key Requirements: - Proficient in 2D animation, specifically digital style - Prior experience in creating educational content - Understanding of the teenage audience and how to engage them visually - A portfolio showcasing previous relevant work is highly preferred.
I'm launching a new kombucha brand and I'm looking for a professional financial pitch deck to help me secure investment and partnerships. Here's what I need: - **Target Audience**: Th...achievable. The projections should clearly show the brand’s potential for profitability and growth. - **Unique Selling Proposition (USP)**: The kombucha brand's USP lies in its organic ingredients, unique flavor profiles, and sustainable packaging. The pitch deck should effectively communicate these aspects to make a strong case. The ideal freelancer for this project should have experience in creating financial pitch decks for consumer goods, particularly in the food and beverage industry. A background in marketing or business planning would be a plus. Please provide exam...
I need a creative email template designer who is proficient in designing for Outlook, with a focus on responsive design. Key Requirements: - Proficiency in creating email templates for Outlook. - Experience with responsive email design. - Strong understanding of email marketing best practices. - Ability to design a visually appealing, engaging and professional template that aligns with the marketing requirements. Ideal candidates will have a strong portfolio showcasing their previous email template designs, particularly those tailored for Outlook and responsive layouts.
I'm looking for a dynamic, creative motion graphics designer to help create educational content aimed at making science more engaging and understandable to everyone. Key Requirements: - Experience in creating educational motion graphics, ideally in the field of science. - Ability to translate complex scientific concepts into clear, concise and engaging visuals. - Considerable understanding of designing content for a wide range of audience, especially those without a science background. Your innovative approach to design and ability to engage varied audiences is key to the success of this project.
I need a talented and experienced motion graphics designer who can create an advanced level educational infographic. This should be engaging and pedagogically sound. Key Requirements: - Expertise in creating advanced level (graduate/professional) educational content - High proficiency in infographic motion graphics - Ability to present complex concepts in an easy-to-understand manner - Experience with educational content is a must Your task will be to translate dense, advanced level academic subjects into a clear, concise, and visually appealing infographic animation. Please include examples of similar work in your proposal.
As a small furniture co...well-versed technical writer to create an instruction manual for our furniture that is aimed at the general consumer. Key Tasks and Responsibilities: - Understand the process and steps to assemble our furniture which requires moderate assembly - Develop clear, concise, and user-friendly assembly instructions that can be easily followed by our customers Ideal Skills: - Previous experience in creating assembly instructions or technical documentation - Ability to write clearly and simply - Knowledge in furniture assembly or related field would be advantageous Your task will be to make assembly a breezy experience for our general consumers. We expect the manual to alleviate any assembly-related stress and promote efficient, successful assembly from start ...
I'm in need of a dedicated professional to design and create...system in place that allows the allocation of resources. - Reporting: It should also offer a reporting feature to track the progress of tasks and resources. User Interface: - Simple and Minimalistic: I envision the user interface to be clean, uncomplicated yet efficient for managing tasks and resources. Ideal Skills: - Proficiency in MS Teams and its development capabilities - Experience in creating resource management applications - Understanding of user-friendly design principles - Good communication skills for potential user feedback This project will require a freelancer who is not only skilled in software development, but also understands the nuances of team dynamics and resource management within a collabor...
I'm seeking a tech-savvy, enthusiastic beginner-level videographer to create a variety of educational videos for my tech education website and YouTube channel. This role involves creating visually engaging and informative content that targets those interested in coding, web development, software engineering, and job interview preparation. Key Responsibilities: - Create coding tutorial videos - Develop web development guide videos - Prepare videos on job interview tips and guidelines - Educate the viewers on system design, data structures, and algorithms - Create tutorials on the latest tech tools and frameworks The ideal candidate should be knowledgeable in tutoring and explaining tech-focused topics and able to make engaging and informative videos that last for 10-20 minute...
