Internship projects for computer science工作

筛选

我最近的搜索
筛选项:
预算
类型
技能
语言
    工作状态
    2,000 internship projects for computer science 份搜到的工作,货币单位为 USD
    sport playgame 已经结束 left

    student sport play computer game

    $20 / hr (Avg Bid)
    $20 / hr 平均报价
    8 个竞标
    it is a good projects 已经结束 left

    我需要一个新网站,我需要您设计和创建我的博客。希望您有相关的专业技能,是有经验的人可以好好做这件事

    $142 (Avg Bid)
    $142 平均报价
    4 个竞标

    Convert c++ projects to Delphi projects

    $223 (Avg Bid)
    $223 平均报价
    3 个竞标

    需要制作医学类的宣传册,风格类似于nature,science杂志,学术高端风。

    $1766 (Avg Bid)
    $1766 平均报价
    6 个竞标

    I am looking for Chinese translator. I have book social science book with 250,000 words. You have to pass simple test. Sample text: “在这一阶段,改革的指导思想是“科学技术要面向经济建设,经济建设要依靠科学技术”。政策走向是“堵死一头,网开一面”,即改革拨款制度,针对不同类型的科研工作,采用不同的拨款方式,以解决一切科研工作都靠国家拨款的问题。对于主要从事基础研究的机构,在保证基本事业费的同时,试行科学基金制,通过同行评议、择优支持发放基金。对以开发为主的研究院所、科研工作,逐步削减事业费,鼓励其面向经济建设的主战场。 (3)调整与渐进:1992~1998年。这一阶段以邓小平南方谈话为标志,中国经济体制开始迈入社会主义市场经济新阶段。科技体制改革的指导思想调整为“面向”“依靠”“攀高峰”,科学技术不仅要面向经济建设,而且要攀登科学技术高峰。主要政策走向也相应调整为“稳住一头、放开一片”,希望稳住基础研究工作和相应的科技人员队伍,同时放开面向社会,面向经济建设这一方面,分流人才,调整结构,推进科技经济一体化的发展。” thanks

    $729 (Avg Bid)
    $729 平均报价
    28 个竞标

    احتاج لمبرمج php للعمل بمرتب شهري او اسبوعي او يومي ارجو التواصل معي

    $10 - $30
    $10 - $30
    0 个竞标
    EVERYTHING WELCOME 已经结束 left

    無論政治,經濟,社會及文化也可以分享 Share the views in social science

    $1167 (Avg Bid)
    $1167 平均报价
    4 个竞标

    ...least a Bachelor's degree to administer an on-site exam in Salmiya, Kuwait. This is a one-time gig with the potential for future opportunities. We provide test administration and accommodation solutions to test-takers nationwide. For this purpose, we look for professionals who we contact on an "as-needed" basis to see if they are available to assist test takers for their approved accommodations. We provide complete training and assignments pay hourly for the entire scheduled time, even if the exam ends early. We have a computer exam coming up where a test taker has been approved for communication assistance. The candidate is deaf or hard of hearing but is able to read lips. For this assignment, you would be require...

    $18 - $25 / hr
    本地
    $18 - $25 / hr
    0 个竞标

    I need a data computer operator to assist with online data entry tasks. The data will primarily be sourced from online platforms and will be used for updating our database. Key Responsibilities: - Efficient and accurate data entry from various online sources. Ideal Skills and Experience: - Proven experience in data entry, particularly from online sources. - Strong attention to detail. - Familiarity with database management and updating. Please note that the primary focus of this role is accurate and efficient data entry, so attention to detail and reliability are crucial.

    $11 / hr (Avg Bid)
    $11 / hr 平均报价
    11 个竞标

    ...need of a computer engineer who can assist me in developing a WhatsApp embedded onboard system. This system should be capable of sending, receiving, and managing messages. Key Requirements: - Implementation of WhatsApp integration for an onboard system. - Functions to send, receive, and manage messages through the onboard system. Preferred Skills: - Proficiency in C#. - Familiarity with Visual Studio MVC projects. - Experience in embedded systems and software development. - Familiarity with messaging application development. - Strong problem-solving abilities for hardware-related issues. Should you have a background in both computer engineering and software development, with a particular proficiency in C#, I'd like to hear from you. This is a u...

    $11 (Avg Bid)
    $11 平均报价
    6 个竞标

    We need a designer who can create us a small Subpage for a computer store. We need 3 Images (Layout fix).

    $51 (Avg Bid)
    $51 平均报价
    61 个竞标

    Hi, I am a political science student and I am considering conducting research regarding formal documents' verification services in different countries, focusing on notary and apostille signatures. I am looking for someone who recently went through the process of notarizing documents in the EU, who can answer some basic questions regarding the process. Thank you for contacting me!

    $26 (Avg Bid)
    $26 平均报价
    17 个竞标

    I'm seeking a proficient editor with an aptitude for scientific and health (medicine) topics. This project will involve meticulously editing for grammar, spelling, and structure, as well as providing a succinct but informative introduction based on researched data. Key Responsibilities: - Edit and proofread text for a wide variety of scientific and health-related articles. - Conduct brief overview research on introduction sections using academic articles. Ideal Skills: - Proven experience in editing academic papers, specifically in the science and health fields. - Familiarity with scientific terminology and academic resources. - Attention to details in grammar, spelling, and structure. - Strong research abilities.

    $19 / hr (Avg Bid)
    $19 / hr 平均报价
    48 个竞标

    ...different materials - cast iron and carbon ceramic - under varying conditions. Key responsibilities include: - Analyzing the heat transfer rate of the brake disk made from both cast iron and carbon ceramic. - Investigating the airflow rate on the brake disk for these materials. - Comparing and presenting the results of the analysis, particularly focusing on the performance differences between the two materials. - Providing insights and recommendations on the preferred material based on the analysis conducted. Ideal skills and experience for this project include: - Proficiency in COMSOL MULTIPHYSICS software. - Strong background in heat transfer analysis. - Experience with vehicle brake systems and materials, especially cast iron and carbon ceramic. - Ability to interpre...

    $368 (Avg Bid)
    $368 平均报价
    15 个竞标
    Trophy icon Logo for Arton Tekki-Apu 29 天 left

    My small computer remote fix and need logo. I repair windows computer only remote access and via phone.

    $54 (Avg Bid)
    加保
    $54
    179 项参赛作品

    We are looking for a computer program that can take over some of the repetitive tasks we currently do manually. The program will primarily be used on Windows OS and should be capable of performing the following functions: - Automating data entry tasks - Organizing files efficiently - Managing emails effectively - Checking invoices to prevent double billing Ideal candidates for this project should have: - Experience in developing Windows-based automation software - A strong understanding of data entry, file organization, email management, and invoice checking processes - Proficiency in designing user-friendly interfaces - Ability to integrate error prevention mechanisms to ensure accuracy Your solution should help us streamline our work processes, reduce human error,...

    $1327 (Avg Bid)
    $1327 平均报价
    56 个竞标

    I'm seeking a JIRA expert with a proven track record in configuring JIRA projects in SCRUM, Project Management, and KANBAN formats. The ideal candidate will be able to implement specific features and functionalities within these projects. Key responsibilities include: - Implementing user story management, sprint planning, task tracking, burndown charts, release management, and Kanban boards for SCRUM, Project Management, and KANBAN projects. - Ensuring that each project is tailored to the specific needs and workflows of my team. - Enhancing our project planning and tracking processes. I'm looking for a professional who can ensure that the integration of JIRA into our workflow is seamless, efficient, and user-friendly. The ultimate goal of this...

    $150 (Avg Bid)
    $150 平均报价
    4 个竞标

    I'm in need of a professional who can confidently and effectively publish and promote my skills in IT. - The key skills I want to highlight are my forte in strategic marketing and computer science. - I'm particularly seeking someone with a proven track record in online advertising and social media management - an area I wish to showcase prominently on my profile. - Experienced professionals in the field of marketing and IT are most welcome to bid. - The ideal candidate will also have hands-on experience in creating attention-grabbing, comprehensive professional profiles. Looking forward to your proposals!

    $385 (Avg Bid)
    $385 平均报价
    15 个竞标

    Hi Projects H., I noticed your profile and would like to offer you my project. We can discuss any details over chat.

    $250 (Avg Bid)
    $250 平均报价
    1 个竞标

    I'm seeking an experienced data scientist with expertise in Python and R for a project that involves time series data visualization and statistical analysis. Key Responsibilities: - Conducting data visualization to present insights in a clear and compelling manner - Performing statistical analysis to extract meaningful patterns and support decision-making I will provide you with a working file that retrieves data from our Python/R library. Your responsibility would be to process and analyze this data. We use Python/R with Jupyter notebooks. Ideal Skills: - Strong proficiency in Python - Experience with data visualization tools such as Matplotlib, pyplot and of course Pandas - Proficiency in statistical analysis methods and tools I want two reports created in an e...

    $11 / hr (Avg Bid)
    $11 / hr 平均报价
    16 个竞标

    I'm currently working on a Premier Pro projec...artefacts that need to be fixed. Therefore, need an expert video editor, proficient with Premier pro, who can help me eliminate these glitches swiftly. Ideal skills include: - Proficiency in Adobe Premier Pro - Experience with video glitch fixing - Keen eye for detecting and eradicating unwanted artifacts - Excellent problem-solving skills that will ensure efficient resolution of the issue. I was told by Adobe Help that it was third party fonts, and GPU capability causing the issues, but I have deleted the fonts, and used a more powerful computer, still with the same issues and warnings coming up. I have since removed effects that were needing the more powerful processing, but still getting the ribbons and warnings? ...

    $64 (Avg Bid)
    $64 平均报价
    33 个竞标

    ...basis. The successful candidate will work on mobile application projects. Key Responsibilities: - Development of mobile applications utilizing Flutter - Incorporation of high-quality UI/UX Design and seamless User Experience - Efficient integration of third-party APIs - Proper State Management to ensure the application runs smoothly Extra: - Previous experience with Audio Video Call projects will be a plus The ideal candidate must have: - 1-2 years of experience in Flutter development - Strong understanding of UI/UX design principles - Proven experience in API integration - Solid grasp of state management - Additional experience in audio video call projects will be considered favorably This is a fantastic opportunity for a developer with a go-getter atti...

    $339 (Avg Bid)
    $339 平均报价
    51 个竞标

    The budget for this is $3/hour for 40 hours a week. I'm looking for a English and/or Spanish speaker with a background in Computer Science to help me with writing abstracts and articles. As part of the proposal please submit a two-sentence summary of this paper:

    $4 / hr (Avg Bid)
    $4 / hr 平均报价
    24 个竞标

    Seeking a motivated individual for our 3-month paid internship, this role will focus primarily on video editing. The intern's responsibilities will include: -Cutting and trimming footage, -Adding transitions and effects. No prior experience is required but a keen interest in video editing is essential. Ideal candidates are quick learners and self-starters with creative minds. Take this opportunity to dive right into the practical aspects of the field and gain unparalleled experience.

    $192 (Avg Bid)
    本地
    $192 平均报价
    5 个竞标

    For this project, I require a skilled/experience video editor with a keen eye for detail who grapples with the cyberpunk aestheticin after effects (I have already Purchased of Cyberpunk AF HUD for your use). Here are the specifics: - Highlighting Elements: The edit should focus on intensifying elements of neon lights, futuristic cityscape, and advanced technology and cybernetic enhancements. - Mood and Tone: The essence should be dark and gritty to resonate with the overall theme of cyberpunk. - Purpose: The final edit will be incorporated into a larger multimedia project, so a flair for creative versatility and respectful alignment with other elements is vital. Ideal skills would include a strong understanding of the cyberpunk genre, experience in short fil...

    $229 (Avg Bid)
    $229 平均报价
    34 个竞标

    I require assistance in viewing and downloading a few specific files from a different computer. Key Details: - The files that need to be accessed and downloaded are primarily documents and payment transfer proofs. - The method of access and download should be via a secure file transfer service. - Security is important. Therefore, the transfer should be password protected. Ideal Skills and Experience: - Proficiency in using remote file access and download tools. - Understanding of secure file transfer methods and experience with password protection. - Keen attention to detail, ensuring that the right files are identified and downloaded. (Images is for illustration purpose only) Name of real recipient will be told.

    $436 (Avg Bid)
    $436 平均报价
    16 个竞标

    My project requires an expert in machine learning, particularly with a focus on using Python for neural networks. Ideal Skills and Experience: - Proven experience in machine learning projects - Expertise in Python programming - Proficiency in neural network programming - Strong understanding of deep learning Your understanding of machine learning principles, advanced Python programming, and neural network frameworks will be pivotal to the success of this project. Please detail your relevant experience and provide examples of similar projects.

    $96 (Avg Bid)
    $96 平均报价
    13 个竞标

    ...per day. Tasks and Responsibilities: - Able to follow instructions. - Computer literacy. - Manage home. Home Management: In addition to the above, the successful candidate will assist with household inventory management, maintaining comprehensive records and ensuring that everything is in its rightful place. Ideal Skills and Experience: - Demonstrated experience in home sitting and assistance. - Exceptional organizational and management skills. - An eye for detail, especially when dealing with inventories. - Good communication skills. - Ability to follow orders. This is a demanding job that requires a flexible, dependable, and detail-oriented person. If you believe you're the perfect fit for the position, I would love to hear from yo...

    $1160 (Avg Bid)
    $1160 平均报价
    29 个竞标

    I am searching for an experienced copyeditor to refine a Science Fiction/Fantasy novel of mine. The manuscript is of moderate length, ranging between 50,000 and 100,000 words. Task Details: - Proofread and correct all grammatical, spelling, and punctuation errors. Ideal Candidate: - Must be proficient in English language and grammar. - Has deep knowledge and interest in the Science Fiction/Fantasy genre, thereby understanding its tropes and norms. - Preferable experience in copyediting novels, especially within the aforementioned genre. - Work must be done by a human Please note, this project primarily focuses on fixing errors in language mechanics and does not require extensive alterations in sentence structure or any sort of rewriting.

    $326 (Avg Bid)
    $326 平均报价
    44 个竞标

    Job Title: Full-Stack Developer for WordPress, .NET Middleware, Azure Integration, and SDK Development Job Overview: We are seeking an experienced Full-Stack Developer to spearhead the development and integration of key system components within our e-commerce platform. The successful candidate will lead initiatives to enhance user interactions by developing a WordPress plugin, building a robust .NET middleware API, and integrating advanced Azure-based messaging services. Additionally, the role involves creating an SDK to facilitate easy integration for third-party AI bot services. This position is crucial for ensuring that our platform not only meets current technological standards but also adapts to future advancements and user needs, enhancing both the scalability a...

    $16 / hr (Avg Bid)
    $16 / hr 平均报价
    99 个竞标

    I am seeking an expert in machine learning and computer vision who can craft an advanced object detection algorithm. This algorithm will be employed in outdoor settings and must have the capability to accurately identify vehicles, animals, and pedestrians. Essential Skills and Experience: - Expertise in Machine Learning and Computer Vision - Understanding of outdoor environments and their varied conditions - Prior experience in developing object detection algorithms - Familiarity with vehicles, animals, and pedestrian detection The goal is to devise an algorithm that can track and distinguish between multiple objects in outdoor scenes with different weather, light, and visibility conditions. It should perform reliably under these compounded factors.

    $618 (Avg Bid)
    $618 平均报价
    42 个竞标

    I have less than 100 pages of handwritten medical notes that I need transcribed into a custom template. This project is urgent, and I require the completed transcription in less than a week. Please read this entire ad before replying. NOT FOR AUTOMATED - hand transcribing job. Key Requirements: - Transcription of less than 100 pages of handwritten medical notes and computer printouts. - Custom template formatting (specific layout or structure) - Urgent turnaround time of less than a week Ideal Skills and Experience: - Experience in medical transcription to ensure accuracy and understanding of terminology - Proficiency in creating and working with custom templates - Ability to work under pressure and meet tight deadlines So that I know you are a real person and read this,...

    $33 (Avg Bid)
    $33 平均报价
    113 个竞标
    Cibersecurity App/Software 6 天 left
    已验证

    We want to delelop a cibersecurity software/app to Sell to other companies that can check each computer and device, as also as detect treaths to the company network/devices like e-mails, apps, and suspicious content that puts the company security in Treath.

    $1231 (Avg Bid)
    $1231 平均报价
    98 个竞标

    I'm in need of a professional and well-rounded computer programmer to build and manage various software applications. Key Tasks: - Develop innovative web and mobile applications - Manage and maintain the software database Ideal Experience and Skills: - Strong familiarity and skill in programming languages (Java, Python or C++) preferred - Previous experience in database management - Proven track record in developing web and mobile applications While skills in Java, Python, and C++ are a bonus, I'm primarily interested in your ability to perform the tasks specified above. Show me what you've got!

    $36 / hr (Avg Bid)
    $36 / hr 平均报价
    123 个竞标

    I'm looking for a talented content creator and editor to help me create animated educational/informative videos for elementary school kids. Key Requirements: - Expertise in creating educational content: You should have experience developing engaging educational content, specifically in science. - Animation Skills: The videos will be entirely animated, so proficiency in animation software is a must. - Video editing: You will be required to edit the videos to be engaging and informative. - Understanding of elementary science: Your content should be accurate and formatted appropriately for young learners. - Creative flair: The ability to take potentially dry scientific material and make it engaging for children is essential. This project requi...

    $11 (Avg Bid)
    $11 平均报价
    9 个竞标

    I currently need an experienced online industrial designer who can help me perfect a textile net for my product designed for basketball practice. The main task will be to take the prototype of my existing product and make improvements so that the textile net pushes the balls towards the center of the court. What I want is not a video or a photo, I want computer checks and force studies to verify and test the reliability and probability of what happens when a ball passes through the inside of the funnel with the subsequent purpose of sending it to be manufactured. It will be necessary to provide measurements, material and verifications.

    $113 (Avg Bid)
    $113 平均报价
    22 个竞标

    ...seeking an exam invigilator with at least a Bachelor's degree to administer an on-site exam in Nottingham, UK. This is a one-time gig with the potential for future opportunities. We provide test administration and accommodation solutions to test-takers nationwide. For this purpose, we look for professionals who we contact on an "as-needed" basis to see if they are available to assist test takers for their approved accommodations. We provide complete training and assignments pay hourly for the entire scheduled time, even if the exam ends early. We have a computer exam coming up where a test taker has been approved for a Reader and input assistance. For this assignment, you are required to be present on-site, sit wit...

    $25 / hr (Avg Bid)
    本地
    $25 / hr 平均报价
    1 个竞标

    I am seeking a skilled and experienced freelancer to assist me in developing a comprehensive projects portfolio that highlights my expertise in Lean Six Sigma, Inventory Management, Kaizen, and Continuous Improvement. Key Elements: - I will need you to include detailed project descriptions and project images in the portfolio. - The key projects that will be included in the portfolio will be related to Inventory Management and Optimization. Specifically, the project will focus on demonstrating my use of strategies to achieve results that are reflected in Key Performance Indicators (KPI's). Ideal Candidate: - Experienced in Lean Six Sigma, Inventory Management, Kaizen, and Continuous Improvement. - Proficient in creating engaging and visually appealing project portfolio....

    $20 (Avg Bid)
    $20 平均报价
    20 个竞标

    We are urgently looking for a skilled data researcher who will research online UK based local planning authority databases for certain information sets. - Specific focus is needed on planning submissions and permissions that require BNG (biodiversity net gain credits)(the leads). The information is to be taken from Local Planning Authority official websites (publicly available information and no logins required). An in-depth knowledge of planning submissions and permissions and BNG is NOT needed. What is however required is accurate information to be taken from those websites and converted into a database for us. - This work can be done remotely and only requires a computer and access to the internet. - The geographical focus of the UK planning authorities we...

    $32 - $318
    加急 加封
    $32 - $318
    15 个竞标

    I need to make a website respons...need to be made responsive. I do not want anything to look different on a computer/PC screen than it does now. Just make it also work on cellphones, tablets, etc. I don't know much about CSS. Perhaps just use the existing CSS for computer/PC screens only? IMPORTANT: There are graphics and paragraphs where bold text begins and ends several times, plus underlined text and italic text and links (all in the same paragraph). The new CSS must retain this formatting exactly as is. There are also indented numbered paragraphs, indented bulleted text, and links in these existing webpages. I'll test your work and ask a few friends to test on their devices then pay you. But I may need more help later which I'll also pay you ...

    $179 (Avg Bid)
    $179 平均报价
    41 个竞标

    ...powerful ARM-based single-board computer. The primary goal is to ensure that Velociraptor runs efficiently on Odroid N2+, leveraging the device's capabilities for security monitoring and digital forensics operations. Your contribution to this project could have a significant impact on the cybersecurity field. For more details on the platform, visit: Objectives: 1. Assess the compatibility of Velociraptor with the Odroid N2+ hardware and ARM architecture. 2. Modify the Velociraptor source code for optimal performance on the Odroid N2+. 3. Ensure all Velociraptor functionalities are operational on the new platform. 4. Conduct thorough testing to ensure stability and performance. 5. Create documentation (a walk-through) for installing, configuring...

    $661 (Avg Bid)
    $661 平均报价
    15 个竞标

    I'm in need of an expert in video analytics for object detection, specifically guns and knives. The ideal candidate should be able to create a system that can flag the presence of these objects in real-time. Key Requirements: - Object Detection: Specifically for guns and knives - Real-time Processing: Immediate alerts in case of detection The project involves creating a robust and reliable system that can be used in a security setting. Experience in computer vision, machine learning, and video analytics would be highly beneficial.

    $162 (Avg Bid)
    $162 平均报价
    37 个竞标

    ...am seeking an experienced food scientist or food product developer to assist in studying our Nut Butter and help us in enhancing the recipe and also helping me develop new recipes. The responsibilities include: - Researching market trends in nut butters, in particular, flavored nut butters - Formulating a unique recipe for a flavored hazelnut butter - Conducting appropriate food safety and stability testing The ideal freelancer will have: - A background in food science or a related field - Previous experience in product development, particularly in the area of nut butters or similar products - A creative mindset and a keen understanding of flavor profiles The end objective is to bring a delicious and unique flavored hazelnut butter product to market. Together, let...

    $57 (Avg Bid)
    $57 平均报价
    9 个竞标

    ...technology to deliver top-notch solutions to our clients. Job Description: We are seeking a talented and motivated Part-Time iOS Mobile App Swift Developer to join our team. In this role, you will work closely with our development team to design, develop, and maintain iOS applications using the Swift programming language. This position offers the flexibility of working part-time, making it ideal for candidates looking to balance work with other commitments. Key Responsibilities: Collaborate with the development team to define project requirements and objectives. Design, develop, test, and maintain iOS applications using Swift. Ensure the performance, quality, and responsiveness of applications. Identify and fix bugs and performance bottlenecks. Continuously research and st...

    $7 / hr (Avg Bid)
    $7 / hr 平均报价
    17 个竞标

    ...an engaging and entertaining long-form video for me. Key Requirements: - 3D Computer-Generated Animation: The animation style I am specifically looking for is 3D computer-generated. I'm interested in high-quality, detailed animations. - Video Length: The video I need is more than 10 minutes long, so I need someone who is comfortable and experienced in creating longer-form content. Ideal Skills and Experience: - Proficiency in 3D animation software: You should be well-versed in using 3D animation software to create high-quality animations. - Portfolio: I'd like to see a portfolio of your previous work, especially any long-form 3D animations you've created. - Creativity: Since the primary purpose of this animation is entertainment, I'm loo...

    $198 (Avg Bid)
    $198 平均报价
    8 个竞标

    I need someone who is proficient in data analysis, particularly with u... etc. - Ensuring an ethical approach to data analysis - Asking the right questions for analysis and providing detailed insights Requirements: - Extensive experience in data analysis, particularly with unstructured data - Proficiency in machine learning techniques like LDA and NMF - Strong ethical understanding and the ability to consider ethical implications in data analysis - An analytical mindset with the ability to ask the right questions and provide detailed insights Ideal skills and experience for this job would include a background in data science, machine learning, natural language processing, and a strong foundation in data analysis. Your ability to handle small datasets effectively is c...

    $93 (Avg Bid)
    $93 平均报价
    24 个竞标

    I'm in need of a proficient developer to create a comprehensive computer (in a network) probe software compatible with Windows and Linux. The software should have the following key features: 1. find systems in a network and log details to a CSV file/db table. hostname, ip addresses , mac address etc along with hard disks ,os,version etc. 2. find applications installed in the computers Ideal Skills & Experience: - Prior experience in developing network monitoring and security auditing software. - Proficiency in programming languages suitable for cross-platform development. - Strong understanding of network protocols and security standards. - Experience with compliance monitoring tools and techniques would be an added advantage. Please inc...

    $12 / hr (Avg Bid)
    $12 / hr 平均报价
    11 个竞标

    I need assistance with educational work related to the subject of science.

    $17 / hr (Avg Bid)
    $17 / hr 平均报价
    32 个竞标