Excel sheet shift work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 excel sheet shift work 找到工作

    I'm in need of a full-time, day-shift Diagnostic Radiologist with a Texas License. The ideal candidate should be Board Certified and able to work exclusively with diagnostic imaging. Requirements: - Texas Radiologist License - Board Certification - Expertise in Diagnostic Radiology - Availability for day shifts only Skills & Experience: - Proficiency in reading and interpreting various types of medical images - Experience in a clinical setting - Excellent communication skills for discussing findings with other healthcare professionals - Attention to detail and high level of accuracy

    $4500 Average bid
    $4500 平均报价
    2 个竞标

    E-commerce Product Optimization Overview: Our website's navigation is hindered by an overwhelming number of products and outdated categories, making it difficult for customers to find and compare items. We are seeking a project-based contractor to streamline and reorganize our product categorization, improving usability and searchability for a better ...Function-Based Categorization: Products are grouped by primary function, enabling intuitive exploration, discovery, and comparison. Streamlined child categories under each parent category to eliminate redundancy. Products are assigned to the most relevant single category, avoiding cross-category duplication. Next Steps Enhanced product titles and descriptions based on logical categories Skill Sets: Excel chat-GPT Familiarity...

    $478 Average bid
    $478 平均报价
    68 个竞标

    I require a professional who can convert my PDF files into editable Excel and Word formats while preserving the original formatting. The ideal freelancer for this job would have excellent attention to detail and experience with data conversion. After the conversion, I may need some additional services such as adjusting the layout and design or proofreading and editing text, so flexibility and a good command of English would be an asset.

    $11 Average bid
    $11 平均报价
    131 个竞标

    ...leads and appointments in our provided Excel templates. -Quality Assurance: Each appointment will be evaluated for validity before payment is released. Requirements: -Bilingual Fluency: Must be able to speak and write English and Spanish proficiently. -Equipment: You must provide your own computer, headset, and reliable internet connection. -Phone Software: We will provide phone/VOIP software for making calls. -Telemarketing Experience: Previous experience is a plus, but we also welcome driven individuals looking to build their telemarketing skills. Compensation: -Pay Per Appointment: $20 per valid appointment. -Performance Incentive: $25 per valid appointment if you achieve 10 or more appointments in a single week. Schedule: -Fully Freelance: Work on your own time;...

    $477 Average bid
    $477 平均报价
    9 个竞标

    I'm in need of a Power BI dashboard that pulls from an Excel sheet to monitor regulatory compliance deadlines for various applications. The dashboard should showcase key information, such as application deadlines, compliance status, and the departments responsible for each application. Key Requirements: - Proficiency in Power BI and Excel is a must - Experience in creating dashboards for compliance tracking is preferred - Ability to ensure the dashboard can be updated on a weekly basis, in line with the Excel sheet Ideal Skills: - Power BI - Excel - Compliance Tracking - Data Visualization - Dashboard Creation

    $166 Average bid
    $166 平均报价
    102 个竞标
    DATA ENTRY & CONVERT
    已经结束 left

    ...as using Excel formulas or knowledge of accounting software. * Define the completion time: Provide a realistic completion time estimate. * Define the budget: Indicate the budget range you have prepared. Data Entry Freelancer Required for 2024 Financial Budget Project We are looking for a meticulous and efficient data entry freelancer to help us enter 2024 financial data into a spreadsheet. This project includes: * Data: 2024 company transaction, expense, and revenue data. * Format: Data will be provided in Excel format. * Time: Project is expected to be completed within 2 weeks. * Skills: Experience in data entry, a basic understanding of accounting, and the ability to use Excel formulas are a plus. If you are interested and meet the requirements, please submit yo...

    $129 Average bid
    $129 平均报价
    46 个竞标

    I've got an Excel dataset of 3500 parts that needs to be linked with their corresponding part drawings in the parts manual, which are all available as digitized PDF files. Ideal skills for the job include: - Proficiency in Excel - Attention to detail for accurate linking - Familiarity with handling and interpreting part drawings from PDF files The goal is to create a comprehensive and user-friendly reference that connects each part to its corresponding drawing.

    $116 Average bid
    $116 平均报价
    54 个竞标

    Design and develop a custom Excel solution tailored to data analysis. The project will include advanced visualization through dynamic dashboards, robust data analysis using formulas and pivot tables. Key deliverables will be a user-friendly, interactive tool and provides actionable insights.

    $11 Average bid
    $11 平均报价
    18 个竞标

    ...Assistant API provides. Sample queries for testing: ● "Share my revenue during March" ● "Forecast my expenses for the next 3 month" ● “How did my company perform during 2024?” ● “Share my Profit & Loss report for the last quarter of 2024” Other Instructions: ● For developing and testing the application, you can email us to request a temporary API key for ChatGPT . ● The sample reports (Balance Sheet, Profit & Loss Report and Executive Summary) needed for this have been made available to you along with this file. ● Feel free to refer to online blogs and tutorials, but do not blatantly copy code from other places. ● The Chat UI can be a bit basic, but the clarity and UX should not be compromised. Focus on adding more power, featur...

    $227 Average bid
    $227 平均报价
    11 个竞标

    One month work for one YouTube Channel

    $104 Average bid
    $104 平均报价
    1 个竞标

    I have two company sell sheets that need a graphic designer's touch. I need a professional proficient in Adobe InDesign to make the necessary updates. Key Tasks: - Replace one logo with another - Update phone numbers and email addresses - Adjust colors on the sell sheets to align with the new logo I am open to your design suggestions, and minor adjustments to the layout are acceptable. You will need to have access to the "New Hero" font, and I would appreciate your expertise in selecting a color scheme that aligns with the new logo. Ideal skills and experience: - Proficiency in Adobe InDesign - Graphic design experience - Familiarity with the "New Hero" font - Ability to suggest design improvements

    $87 Average bid
    $87 平均报价
    101 个竞标

    ...not required. - The freelancer should be fluent in CZECH / SLOVAKIAN and have excellent communication skills. - Previous experience in customer service is desired. - The freelancer should be able to handle phone inquiries and provide assistance to customers. - The expected workload is less than 40 hours per week, cca 1-3 hours / day, every working day is needed. Important: Part-time job: every work day, somewhen between 9am and 6pm CET, you’d have to: • you have to call the fresh orders, who just bought something in our client's web shop, reach them and tell them we’re thankful for their order, now it’s confirmed, and that they should be at home on the expcted shipping date so the package will be delivered. • call those who didn’t pic...

    $4 / hr Average bid
    $4 / hr 平均报价
    7 个竞标

    I'm seeking a skilled software developer to create a comprehensive mortgage calculator for Excel. The application should include the following features: - Loan calculation: Accurately computes potential loan amounts based on user inputs. - Amortization schedule: Visually presents the breakdown of each payment over the life of the loan. - Allow to enter additional principal payments to show impact on savings over time / early payoff - Closing cost inputs: Allows users to factor in estimated closing costs. - Cash to close estimator: Calculates the total cash needed at closing. - 3 purchase scenarios: Provides the capability to evaluate three different purchase scenarios. - Want sheet to be visually appealing and branded to Cohen Mortgage as a PDF version will be created a...

    $458 Average bid
    $458 平均报价
    36 个竞标

    I'm looking for an experienced graphic designer to modernize and rework a poster for an upcoming Expo. Key Requirements: - Delivery in 24h - Update the design to be more contemporary while keeping the overall theme intact - Replace title with our company logo - attached in different formats - Make the design 'Bold and vibrant' – this is the style I prefer for the modernized design attached - Emphasize key elements: Event name and date, Main attractions, Location and contact information - Include the QR code with CTA 'Register here for tickets' Ideal Skills and Experience: - Proven graphic design experience, particularly with poster design - Strong understanding of modern design trends - Ability to create 'Bold and vibrant' designs - Excellent comm...

    $150 Average bid
    加精 加急 加保
    $150
    188 项参赛作品

    ...Copywriting and Rewriting and excel in working independently, please do not hesitate to reach out to me! I have a consistent workload of Copywriting & Rewriting each week, and the benefits are quite favourable. Let's collaborate effectively! If you: ✓ Have advanced proficiency in Greek, ✓ Can communicate ideas clearly, fluently, and logically, similar to a native or bilingual speaker, ✓ Are knowledgeable about SEO optimization, ✓ Possess previous experience in rewriting and copywriting, ✓ Demonstrate the ability to present familiar topics with fresh perspectives, avoiding monotony, ✓ Exhibit strong grammar and writing skills, ✓ Are receptive to improving your work through constructive feedback, ✓ Are committed to meeting deadlines and consistently delivering w...

    $31 Average bid
    $31 平均报价
    34 个竞标

    I'm looking for a proficient Excel expert who can help me develop a basic Rental Asset Inventory Management workbook with some automated calculations. Key Features: - ITEM LIST: This sheet should include Item ID#, Description, Last Purchase Date & Last Cost (both pulled from the transaction list), book Quantity (calculated from transactions), Asset Item and Total Values. - ITEM TRANSACTIONS: This sheet should include Date, Item ID#(drop down list), Supplier Name (drop down list), Supplier Invoice #, Action (Drop Down List -- Purchase+, Rent Out-, Rent Return+, Writeoffs-), Costs (for purchases). Requirements: - The workbook should have some automated calculations, but not to the extent of needing macros. - Item quantities should be automatically updated fro...

    $16 Average bid
    $16 平均报价
    64 个竞标

    Contexte : TeamHouse a pour mission de faciliter l’organisation de séjours d’entreprise en proposant une offre de location de maisons privatisées avec services de restauration et activités à la carte. Nous permettons à une équipe de collaborateur de pa...com/benjamin-team-house/reunion-de-15-minutes?month=2025-01 Envoi de votre proposition avant vendredi 17/01/25 à 16h via la plateforme ou par email à : benjamin"arobase", détaillant : - Une présentation de vos expériences et références pertinentes (CV ou profil plateforme). - Un exemple de campagne outbound réussie avec résultats obtenus. - Un exemple de reporting de campagne similaire (format PDF, Excel, d...

    $1094 Average bid
    $1094 平均报价
    27 个竞标

    I'm seeking an experienced web developer to create a simple, professional WordPress site on GoDaddy for my business. Core Requirements: - A few basic pages: Home, About Us, Contact Us - A 'Registration' form that customers can fill out. This form must be able to populate an Excel sheet stored in a shared cloud directory, such as Dropbox. - Must include OTP validation before form is submitted. There will be mandatory fields on the form. Ideal Skills and Experience: - Extensive WordPress and GoDaddy experience - Excellent understanding of creating business-oriented websites. Please provide examples of similar projects you've completed.

    $186 Average bid
    $186 平均报价
    238 个竞标

    I have a list of addresses in an Excel file that need to be formatted and transferred to a Word document for printing on generic sheet labels. Specific Requirements: - Use a generic sheet label format. - The list contains between 100 to 500 addresses. - Format the addresses in a single column on the labels. Ideal Skills: - Proficiency in Excel and Word. - Prior experience with label printing. - Attention to detail to ensure all addresses are correctly formatted and transferred.

    $23 Average bid
    $23 平均报价
    40 个竞标

    I need a simple two-page website that automatically scales to different screen resolutions. The first page can be scrolled down two screens. The first...of this site will be translated. All text should scale/adapt along with the picture/background of the site for different devices. The text should not shift somewhere to the side relative to its location on this background because the background contains elements that are interconnected. It is also necessary that when opening this site, first of all a modal window with the text (Disclaimer) appears. Then the user simply clicks the ok button and this window disappears. I have already made the backgrounds, pictures and texts myself. I already have hosting and a domain name. 1) what is the price? 2) what is the deadline for completing...

    $150 Average bid
    $150 平均报价
    206 个竞标

    I'm looking for an experienced app designer with expertise in PowerApps, MS Office 365, and Excel. Key Requirements: - The app should be compatible with Windows, iOS, and Android. - The app should include functionalities such as data visualization with charts and automated workflows. Ideal Skills: - Proficient in PowerApps, MS Office 365, and Excel. - Experience in designing cross-platform apps. - Ability to incorporate data visualization and automated workflows into app design.

    $530 Average bid
    $530 平均报价
    118 个竞标

    ...using personal capital. - Conduct in-depth analysis of assets available on , including cost per square foot and typical expense percentages. Data Sources: - You will be provided with brochures from sellers, personal notes and research, as well as country-specific information including taxes and other relevant factors. Ideal Skills and Experience: - Extensive knowledge and experience in Excel financial modeling. - Familiarity with commercial real estate assets preferred but not mandatory. - Ability to learn quickly and understand new assets. - Strong analytical skills and attention to detail. This project requires someone who can not only crunch numbers but also develop a good understanding of the assets being evaluated. Your expertise will be key in determining the most suita...

    $11 / hr Average bid
    $11 / hr 平均报价
    48 个竞标

    I need a freelancer to help me transcribe 2-3 pages of my bank statement into an Excel file. Please format the data into separate columns for Date, Description, and Amount. Additionally, I need the balance after each transaction included in the Excel file. Specific Requirements: - The data should be transcribed into columns for Date, Description, and Amount. - The balance after each transaction should be included. Formatting: - The Excel file should use standard grid lines and font. Ideal Skills: - Proficiency in Excel - Attention to detail - Data entry experience

    $21 Average bid
    $21 平均报价
    79 个竞标

    I have ongoing work related to our previous project 'flyer design - 07/01/2025 04:40 EST'

    $15 / hr Average bid
    $15 / hr 平均报价
    1 个竞标

    This program is to be an unpublished, separate tool for my website for asset valuation: www.maskinvurdering.dk. I have prepared a 6 page description of the project, which I have attached. I am interested in firm bids only. Placeholder bids are not to be considered genuine bids and such bids will not be considered.

    $2763 Average bid
    保密协议
    $2763 平均报价
    48 个竞标

    Alsaleem Milk Project Work You have received the necessary files, PSD, AI, PDF and JPG, thank you

    $60 Average bid
    $60 平均报价
    1 个竞标

    ...Assistant Job Summary: , a new AI-focused startup led by a very experienced businessman based in London, is seeking a dedicated and organized Virtual Personal Assistant. This remote position requires a high level of professionalism and the ability to manage multiple tasks efficiently. The ideal candidate will have excellent communication skills, a proactive approach, and the ability to work independently in a dynamic environment. Responsibilities: • Main tasks: o Manage and develop social media presence (mainly LinkedIn) and digital content under direction. o Prepare, review, and edit documents, websites, presentations, and reports as required. o Conduct research on various topics (AI, Stocks, Market research) to support ongoing projects and initiatives. o Handle personal ta...

    $19 / hr Average bid
    $19 / hr 平均报价
    135 个竞标

    I'm looking for an Excel VBA expert to help me with a local Excel file. The task involves creating a script that will filter data in a pivot table based on specific criteria. Ideal skills and experience: - Proficient in Excel VBA - Experienced in working with pivot tables - Strong understanding of data filtering techniques - Ability to write clean, efficient code

    $14 Average bid
    $14 平均报价
    30 个竞标

    I'm looking for a skilled VBA programmer to create a dynamic filter function for my Excel pivot table. The data source is an Excel workbook and the pivot table is primarily dealing with numeric data. Key Requirements: - Create a VBA code that allows the pivot table to filter numeric data based on custom criteria. - The filter should be dynamic, adjusting as the data changes. Ideal Skills and Experience: - Proficiency in VBA programming with a strong understanding of Excel pivot tables. - Experience in creating dynamic Excel functions. - Ability to understand and implement custom filtering criteria.

    $13 Average bid
    $13 平均报价
    11 个竞标

    I need a professional who can convert my SolidEdge files to SolidWorks 2021 or older. The ...need to be changed. Key Tasks: 1. Convert SolidEdge files to SolidWorks. 2. The components must be created using the "Sheet Metal" and "Weldments" modules. 3. Redesign components from aluminium profiles to metal sheets connected by screws. 3. Utilize available metal sheet sizes: 1000x2000; 1250x2500; 1500x3000. Requirements: - Keep original names for the files. - Provide files in *SldPrt, *SldAsm, *PDF, *dxf formats. - Create drawings with parts lists. - Create drawings with sheet metal lists. Ideal Skills: - Proficiency in SolidWorks. - Experience with SolidEdge. - Understanding of CAD file formats. - Skills in part naming and organization. - Knowledge ...

    $124 Average bid
    $124 平均报价
    52 个竞标

    This project aims to develop a robust and automated database system that collects, stores, and manages listings from public portals related to funding and tenders programmes. The system must include automated daily web scrapers to pull new announcements and update the database efficiently. This solution will enable seamless data retrieval, analysis, and management for stakeholders. Scope of Work 1. Database Development • Design and implement a scalable, secure relational database (e.g., MySQL or similar) for storing funding and tender listings. • Database structure should accommodate fields such as: • Title of the funding or tender. • Description and eligibility criteria. • Submission deadlines. • Funding amount or programme budget. • Cont...

    $651 Average bid
    $651 平均报价
    109 个竞标

    ...fillable PDF form incorporating numerical data from Excel. The form will require several advanced functionalities including: - Formulas for calculations: This is crucial as the form needs to carry out certain computations based on the input data. - Conditional formatting: The form should be able to visually represent changes based on different conditions. - Data validation: The form must ensure that the inputs meet certain criteria, helping to maintain the integrity of the data. The integration of the Excel data into the PDF form will be done through manual input. Therefore, the design should facilitate ease of use and accuracy during this process. Ideal skills and experience for this job include: - Proficiency in Adobe Acrobat and Excel - Experience in creatin...

    $476 Average bid
    $476 平均报价
    36 个竞标
    Urgent Animation Work
    已经结束 left

    I am in need of animation services. i will provide details in DM

    $8 - $17
    加封
    $8 - $17
    27 个竞标

    We are working on a project that collects data through surveys aimed at understanding trends, traveler preferences, and satisfaction levels within the tourism sector. Currently, the process involves manual work using Excel, which is time-consuming and inefficient. To address this, we aim to develop a system that automates data preparation, classification, and visualization (using POWER QUERY), thereby enhancing accuracy and decision-making capabilities. The overarching goals of the project are: of Dashboards in Power BI Building interactive dashboard(s) to present various analyses, key questions, and insights, supported by constructed indicators, DAX formulas, and other advanced features. Statistical Indicators Generating descriptive statistical measures (e.g.,

    $441 Average bid
    $441 平均报价
    109 个竞标

    I am looking for an experienced professional well-versed in the NIST, COBIT, and FFIEC frameworks to help str...and NIST frameworks to create accurate and compliant documentation for audit and regulator inquiries. - Risk and Compliance Metrics: Interpreting and presenting trends, emerging risks, and recommendations with the help of ITIL and CIS. - Governance Documentation: Ensuring all policies, standards, and procedures align with PCI-DSS and COBIT to meet regulatory expectations. Time : 11pm to 3am (US shift part time) Ideal Skills and Experience Include: - Proficiency in Tableau, ServiceNow GRC, Archer, Python, and SQL. - Strong understanding and experience with NIST, COBIT, FFIEC, ITIL, CIS, and PCI-DSS frameworks. - Excellent ability to develop and interpret risk and complianc...

    $365 Average bid
    $365 平均报价
    6 个竞标

    I'm in need of a Virtual Assistant to help with remote admin tasks. This role primarily involves data entry of customer information and some spreadsheet work. The ideal candidate must have an intermediate understanding of Microsoft Excel, as tasks will include the use of pivot tables and advanced functions. Additionally, the assistant will be tasked with managing my email. Back Office Support.

    $6 / hr Average bid
    $6 / hr 平均报价
    130 个竞标

    As a startup in dubai, We need to recruit a marketing manager. We need a full time employee, and as a part of this, I need someone to list 100 Recruiter Agencies and list them. Need the following data: Email Phone Website Google maps number of reviews of the agency Google maps rating of the agency Google Maps link of the agency --- I will pay for 1 hour and this must be done in 1-2 hours. Thanks.

    $2 / hr Average bid
    $2 / hr 平均报价
    15 个竞标

    I have an internet site in Wordpress and i want it to be more dynamic, with a specific font and more attractive. Is a Civil engineer office site

    $17 / hr Average bid
    $17 / hr 平均报价
    92 个竞标
    Excel macro data sheet
    已经结束 left

    I need to work in a excel doc to do a macro to calculate new prices and add some other information.

    $26 Average bid
    $26 平均报价
    43 个竞标

    *this task is for beginner level person only I am looking for beginner level Excel expert only. Please note that this is fixed price project and not per hour. Please no place holder bid. Please bid with your final price only. I'm looking for a professional to help me format a large Excel sheet and assist with some data analysis tasks.

    $18 Average bid
    $18 平均报价
    137 个竞标
    build linkedin lead list
    已经结束 left

    need freelancer to build a linkedin lead list. i don’t need emails. i will give you the companies and titles in looking for and then you put the data into a google sheet. simple task. there are 700 companies that i have. you should have linkedin sales navigator or good at using the people / company to find specific roles beyond CEO.

    $27 Average bid
    $27 平均报价
    97 个竞标

    I'm looking for a script or API that can export my Active Campaign Deal Notes into a CSV/Excel file. Key Requirements: - The script/API must export the Deal Notes in a CSV/Excel format. - The output should include the note content, the date created, and the username of the note creator. Ideal Skills: - Proficient in scripting and API integrations, especially with Active Campaign. - Strong understanding of data export and manipulation. - Experience in generating CSV files from API data. Please, do not apply if you do not have the required skills and experience.

    $494 Average bid
    $494 平均报价
    36 个竞标

    Pull all data of each publisher as we discussed + create an excel file as you did in the previous job. Delivery in on january 20th

    $104 Average bid
    $104 平均报价
    1 个竞标
    Extra work credit
    已经结束 left

    Extra designs done...

    $40 Average bid
    $40 平均报价
    1 个竞标

    I'm in need of a Virtual Assistant to help with remote admin tasks. This role primarily involves data entry of customer information and some spreadsheet work. The ideal candidate must have an intermediate understanding of Microsoft Excel, as tasks will include the use of pivot tables and advanced functions. Additionally, the assistant will be tasked with managing my email. Key Responsibilities: - Data entry of customer information - Email management - Spreadsheet work, including the use of pivot tables and advanced functions in Excel Ideal Candidate: - Familiar with MS Excel and Outlook - Capable of handling basic to intermediate data entry tasks - Able to manage emails efficiently Please provide your hourly rate, inclusive of all fees. The workl...

    $6 / hr Average bid
    $6 / hr 平均报价
    117 个竞标
    Mail Merge expert
    已经结束 left

    I am seeking a Mail Merge expert to assist with document creation from Excel or CSV files. The project involves: - Utilizing a non-specific mail merge platform to execute the task efficiently. - Creating a variety of documents using Mail Merge. - Working primarily with data sourced from Excel or CSV files. Ideal candidates should have extensive experience with Mail Merge, particularly with non-Microsoft or non-Google platforms. Proficiency in handling Excel and CSV files is essential.

    $15 Average bid
    $15 平均报价
    36 个竞标

    ...need to add additional materials (whether sourced online or created with AI) to make the video more engaging and visually interesting. Output: Minimum of 10 videos per day.(depends) Salary and Working Conditions: Hourly Rate: $70 USD per week for 5 days, 8 hours per day. Long-Term Relationship: This is a long-term role(because in 2025, I plan to record and post 2000 videos on TIkTOK). If your work meets or exceeds expectations, the salary negotiateble and increases. Please provide examples of previous TikTok videos or other short-form content you've edited, especially where you've enhanced the content with supplementary visuals or music. Looking forward to collaborating with a talented editor to make my TikTok videos stand out and help more people benefit from prac...

    $129 Average bid
    $129 平均报价
    45 个竞标

    I have multiple CSV files containing data downloaded fro...is on extracting specific sales data from these files. Ultimately, I need someone to create a chart or dashboard based on this data, comparing sales across different regions. Key Requirements: - Extract specific sales data from multiple CSV files - Create a chart or dashboard comparing regional sales - Use either Power BI or Excel for the analysis and visualization Ideal Skills: - Proficient in data extraction from CSV files - Experienced in using Power BI or Excel for data visualization - Able to create insightful and easy-to-understand charts or dashboards. Please note, the purpose of this project is to visualize regional sales comparisons. Your expertise and attention to detail will be crucial for the success...

    $240 Average bid
    $240 平均报价
    74 个竞标
    Photo Editor Singapore
    已经结束 left

    I am looking for a skilled photo editor based in Singapore who can help me shift the position of people within my photos.

    $15 Average bid
    $15 平均报价
    6 个竞标

    I have a PDF file containing financial data that needs to be converted into an Excel spreadsheet. The data is structured in tables within the document. Ideal Skills: - Proficiency in Excel - Data conversion from PDF - Attention to detail Experience: - Prior projects involving financial data preferred - Experience with PDF to Excel conversion

    $10 / hr Average bid
    $10 / hr 平均报价
    167 个竞标