Latest research topics in physics for phd일자리

...works with a leading MNC digital media company and has expertise in digital marketing. The ideal candidate should be skilled in conducting market research to identify growth opportunities, analyze trends, and assess the most effective advertising platforms for diverse industries. Key Responsibilities: Conduct in-depth research on market growth, trends, and demand across various platforms. Analyze competitor strategies to identify key insights. Recommend the best platforms and strategies for advertising and lead generation. Share detailed reports with actionable insights. The specific project details will be shared with the selected freelancer only. Requirements: Experience in digital marketing and market research. Profic...

I'm looking for an SEO expert to boost our search engine ranking on Google. Our focus is primarily on: - Industry-specific keywords: We want to be recognized as a key player in the cybersecurity SaaS industry. - Brand-specific keywords: We need to improve our visibility for searches directly related to our brand. - Competitor keywords: We aim to outshine our competitors in search rankings. The ideal freelancer for this project should deeply understand SEO strategies, particularly for SaaS and cybersecurity sectors. Experience in keyword research and analysis, as well as a proven track record of improving search engine rankings, is a must. Month 1: Foundation and On-Page SEO Focus: Sub-domains, Redirect URLs, Meta Titles and De...

I'm seeking a skilled writer with a strong background in Biology and science research to help me pen an experimental-based research paper. Ideal Skills: - Expertise in Biology - Proficient in academic writing - Experience in writing research papers - Understanding of experimental research methodology - Ability to articulate complex concepts clearly - Understanding of pesticides, mode of action, exposure to pollinators

I'm seeking a talented freelancer to write a research paper focusing on a machine learning project that analyzes blood test results. The primary goal of the project is to predict disease risk based on these medical reports. The ideal freelancer for this project should have: - Extensive experience in writing research papers, particularly in the field of machine learning and medicine. - Strong understanding and ability to interpret blood test results. - Proficiency in machine learning concepts and techniques. - Ability to present complex ideas in a clear and concise manner. The paper should be written with a moderate level of technical detail, striking a balance between accessibility for non-experts and depth for technical...

HIRING TO CONTINUE INTO EARLY 2025 Project Overview: Upwork Managed Services is seeking native or fluent speakers of German for a conversational recording project involving two-person scripts. This project requires that you bring a recording partner who meets all of the requirements listed below. The recordings will be used for Text-to-Speech (TTS) research and development purposes and will not be broadcast or used in any public or paid media. Recording can be done in person or virtually. You can use your own recording software or our client’s recording platform. Scripts will be provided on a Google sheet with multiple tabs, with each tab including a separate script. Each Google sheet file will take approximately 10 hours to read with one record...

100 videos for CAD $200 Project budget is fixed. Please no placeholder bids. I am only looking for Beginner skill resource who can create step by step SharePoint training videos - either from existing older videos or generate videos based on sample videos. This task is ideal for someone with beginner skills and looking for his or her first project. If you have advanced SharePoint skills then the budget might not work for you. I need training videos made for my SharePoint Online platform. I want a series of instructional videos that cover fundamental tasks in SharePoint, and also demonstrate best practices. The project price described is not per video but rather series of small videos. Topics will be provided. 1. Describe what t...

I'm in need of a professional writer who is well-versed in Computer Science, particularly in the field of Artificial Intelligence, to help me write a research paper based on an experimental study. Ideal skills and experience for the job: - Extensive knowledge and experience in writing Computer Science related papers, specifically on Artificial Intelligence. - Proven track record of conducting and writing about experimental studies. - Exceptional research skills to support the paper and provide a comprehensive literature review. - Ability to present complex ideas clearly and concisely. - Strong understanding of academic writing conventions and standards.

I'm in need of a skilled content writer who can create engaging blog posts focused on the technology sector. The primary aim of these posts will be to drive traffic to my website. Key Responsibilities: - Write high-quality, engaging and informative blog posts on various technology topics. - Optimize content for web traffic and audience engagement. Ideal Skills: - Proven experience in tech content writing. - Excellent understanding of SEO and web traffic strategies. - Ability to write in an engaging, clear and concise manner.

I'm in need of a professional writer who is well-versed in Computer Science, particularly in the field of Artificial Intelligence, to help me write a research paper based on an experimental study. Ideal skills and experience for the job: - Extensive knowledge and experience in writing Computer Science related papers, specifically on Artificial Intelligence. - Proven track record of conducting and writing about experimental studies. - Exceptional research skills to support the paper and provide a comprehensive literature review. - Ability to present complex ideas clearly and concisely. - Strong understanding of academic writing conventions and standards.

I'm seeking a talented freelancer to write a research paper focusing on a machine learning project that analyzes blood test results. The primary goal of the project is to predict disease risk based on these medical reports. The ideal freelancer for this project should have: - Extensive experience in writing research papers, particularly in the field of machine learning and medicine. - Strong understanding and ability to interpret blood test results. - Proficiency in machine learning concepts and techniques. - Ability to present complex ideas in a clear and concise manner. The paper should be written with a moderate level of technical detail, striking a balance between accessibility for non-experts and depth for technical...

Task: Transcribe audio files in their native language. File Description: I have a few research interviews in Bangla, the length can vary from 45 minutes to over 1 hour 30 minutes. On average a file is about 1 hour 15 minutes. Most interviews are group interviews with 5-6 people. A few are individual interviews. Total files to transcribes are not confirmed - it may be as few as 5 files or as many as 15 files (my interviews are still ongoing). Special requirements: I need line by line transcriptions in the same language (Bangla), in the avro keyboard format (kalpurush font). It would be preferable if speakers could be uniquely identified based on voice. If not, then distinguishing interviewee/interviewer is enough. There are other small requirements such ...

I'm seeking a machine learning specialist with experience in IEEE paper writing. I have specific datasets ready for analysis and some preliminary results, but need assistance refining these and crafting a high-quality paper. Your expertise in machine learning and academic writing will be crucial in helping me present my findings effectively. Start your bid by "Hello world" so I can get if it's Ai bid or you have gone through task details

I'm looking for a designer to help me completely overhaul my bathroom. The new design should be modern, incorporating aesthetic upgrades and improving functionality. It should be upscale , more than functional. I want to know latest trends and options. Key areas to focus on include: - Bathtub/Shower: I need a stylish and functional new tub and shower area with bench and modern shower heads - Vanity/Sink: new cabinets and dual sinks, extra electrical outlets. - Lighting/Electrical: Innovative lighting solutions that enhance the space and create a modern ambiance. Heated floor done in tile. Ideal candidates should have extensive experience in modern bathroom design, with a strong portfolio of complete remodels. Skills in spatial planning, a...

I am working on a library dissertation focusing on liquid biopsy. I need help creating detailed information with diagrams. The dissertation will cover various aspects, including: - Diagram Creation: I will need assi...statistical graphs, and molecular structure illustrations. - Information Sourcing: Help with sourcing detailed information on liquid biopsy, particularly Introduction, biological basis of liquid biopsy, overviews, clinical applications, technological advancements, and market analysis, challenges, futures aspects, conclusion, limitations etc. Ideal skills for this project include: - Experience with academic writing and research. - Proficiency in diagram creation software. - Ability to source and synthesize complex information. - Understanding of oncol...

I am seeking a modern and clean UI/UX designer for my news website. The homepage needs to feature: - Top stories - Latest news - Trending topics I also want to incorporate the following additional features: - A search bar - A Newsletter sign-up - Links to our social media platforms Ideal candidates should have a strong portfolio showcasing their skills in creating clean, modern and user-friendly interfaces, particularly for news or content-heavy websites. Experience with UI/UX design tools and understanding of responsive design is a must.

Description: I’m looking for a reliable and knowledgeable Teacher’s Assistant to support me with occasional tasks related to teaching university-level science and math. Responsibilities: • Assigning homework questions based on lesson content. • Assisting in creating lesson plans or supplementary teaching materials. • Researching and summarizing additional resources (e.g., practice problems, readings) for students. • Managing student queries related to assignments or coursework, when needed.

Description: I’m looking for a reliable and knowledgeable Teacher’s Assistant to support me with occasional tasks related to teaching university-level science and math. Responsibilities: • Assigning homework questions based on lesson content. • Assisting in creating lesson plans or supplementary teaching materials. • Researching and summarizing additional resources (e.g., practice problems, readings) for students. • Managing student queries related to assignments or coursework, when needed.

...a strong background in mathematical modeling and data algorithms. The main objective of this project is to use these skills for predictive analysis based on categorical data. Key Responsibilities: - Develop mathematical models to analyze and predict outcomes based on categorical data. - Utilize data algorithms to enhance the accuracy and efficiency of the predictive analysis. - Interpret the results and provide insights based on the analysis. Ideal Skills and Experience: - Proven experience in theoretical physics, particularly in creating and applying mathematical models and data algorithms. - Strong background in predictive analysis. - Excellent understanding of categorical data. - Ability to explain complex concepts in a simple, unde...

...a VPN app for Android devices. The app must be optimized for speed, adhere to the latest coding best practices, and incorporate clean, maintainable code. Key requirements include: - Utilization of OpenVPN protocol - Integration of user authentication through third-party platforms like Google or Facebook - Implementing a monetization strategy through advertising (specific ad types to be determined) The ideal candidate will have: - Extensive experience in Android app development, specifically VPNs - A deep understanding of OpenVPN protocol - Proven track record of creating high-speed applications - Skills in clean coding and adhering to the latest best practices - Experience in integrating third-party authentication services - Understand...

We need an experienced WordPress developer to fix bugs and improve the performance of our website. Tasks include resolving plugin conflicts, fixing broken functionalities, and ensuring compatibility with the latest WordPress version. The ideal candidate should have a strong understanding of WordPress core, debugging techniques, and performance optimization. Key Tasks: Identify and resolve plugin conflicts and errors. Fix broken links, forms, or features on the site. Ensure compatibility with the latest WordPress and PHP versions. Optimize website speed and performance. Conduct post-fix testing to ensure functionality.

...professional with extensive C# experience to assist with my research involving YouTube URLs. The task primarily revolves around deciphering video and audio stream URLs, with the potential need for fixing the existing code from an open-source project. Key tasks include: - Modifying the YouTubeApiSharp project found at in order to let it work correctly again for the deciphering of download URLs of audio and video streams - Extracting JavaScript code from YouTube pages - Using C# to implement the necessary deciphering algorithm The ideal freelancer should: - Have a strong background in C# and regular expressions - Be capable of identifying and fixing issues within existing project code - Understand my research needs and maintain confidentiality ...

I am seeking an experienced grant writer to assist my 501c3 non-profit with applying for foundation grants. Your role will primarily focus on crafting compelling grant proposals that can help secure funding for our initiatives. Ideal Skills and Experience: - Proven track record of successful grant writing, particularly for foundation grants - Excellent writing and storytelling skills - Ability to understand and articulate the mission and needs of a non-profit - Familiarity with the non-profit sector - Strong research skills to identify suitable foundations for our cause Your expertise will be instrumental in helping us navigate the funding landscape and secure the resources we need to make a difference.

...Overview: We are seeking a creative, self-driven Content Creator with a passion for personal finance to join our team! This role is perfect for someone who loves making personal finance topics engaging, fun, and relatable. You will be responsible for producing daily content for our growing social media platforms. Your content will help us build and engage our audience, with the goal of eventually launching digital products and securing brand deals. Key Responsibilities: • Content Creation: Produce 1 piece of high-quality content per day (mix of videos and photo slides), focused on personal finance topics like budgeting, saving, and investing. • Research: Conduct research on trending and evergreen personal finance ...

I'm seeking AI professionals in the US, specifically in Machine Learning, to collaborate on grant proposals. The primary focus is on Research and Development. Key Responsibilities: - Model Development: Designing innovative machine learning models for various research projects. - Data Preprocessing: Handling and preparing data for model training and evaluation. Ideal Skills: - Extensive experience in Machine Learning, particularly in model development and data preprocessing. - Strong understanding of the research and development process. - Excellent grant writing skills. An NDA will be required for details. Grant requirements apply so if you are not a US citizen located in the US, please do not apply as du...

As a leader in book promotion services, BookImpact is on the lookout for passionate and seasoned sales professionals to join our team. Your primary responsibilities will include: - Customer Acquisition: Identifying and engaging potential clients, specifically authors, who could benefit from our services. - Client Relationship Management: Building and maintaining strong relationships with clients to encourage repeat business and foster customer loyalty. - Market Research: Keeping abreast of current market trends and customer preferences to inform our sales strategy. The pay will be on commission,,Lucrative Commission-Based Pay: Earn a 20% recurring commission on all your referrals for a lifetime. Unlimited Earning Potential: The more clients you bring, the more...

I'm looking for an experienced grant writer to help secure startup funding for my music and entertainment startup. Ideal Skills and Experience: - Proven track record in writing successful business grants - Experience in the music and entertainment industry is a plus - Strong research and persuasive writing skills - Ability to meet deadlines and work under pressure - Excellent understanding of business needs and funding opportunities

I'm looking for an expert in osTicket to assist with some database/ticket issues. osTicket is latest version and hosted on Hostgator.com. Tasks: - change dates/response person of existing tickets - provide documentation on making changes to tickets in Database (backend) Requirements: - osTicket experience - hostgator (shared environment) experience and manage osTicket there

I need a LinkedIn expert to boost my followers by managing my account and posting daily content rel...images, and PDFs. Key Responsibilities: - Content Scheduling: Plan and schedule daily posts at optimal times for maximum visibility and engagement. - Engaging with Followers: Respond to comments and messages in a timely manner, fostering a sense of community and encouraging further engagement. Ideal Skills & Experience: - Proven experience in LinkedIn management with a track record of increasing followers. - Familiarity with AI technology, freelancing, and personal growth content. - Excellent communication skills for engaging with followers. - Ability to analyze engagement data and adjust strategies accordingly. Help me grow my LinkedIn presence and bui...

I'm seeking an expert for developing computer vision algorithms that enhance lane detection accuracy for autonomous vehicles. The primary focus is on crafting a comprehensive research essay analyzing the technical aspects, case studies, and theoretical perspectives relevant to this task. The ideal freelancer will have: - Proven experience in computer vision and autonomous vehicle technology - Excellent analytical and research skills - Ability to work with public datasets to simulate real-world conditions Key project tasks: - Develop and optimize lane detection algorithms - Use public datasets to test and refine the algorithms - Write a detailed research essay on the project This is a critical project aimed at significantly improving lane de...

...detailed list of restaurants in the Australian Capital Territory for a new food delivery app. The list should encompass all types of eateries – from fine dining to fast food. Key Requirements: - Data Points: The list must include the restaurant's email addresses, phone numbers, website URLs, full addresses, as well as their Facebook pages, Instagram handles, X profiles, TikTok accounts, and YouTube channels. - Type of Restaurants: All types, not limited to a specific category. Ideal Skills: - Data mining and web scraping - Market research - Familiarity with the Australian restaurant scene is a plus Please note, the main purpose of this data will be to support the launch and growth of a new food delivery app. Your expertise and attention to detail will...

I'm seeking an experienced writer with a strong background in artificial intelligence and machine learning to help me write a research paper focused on neural architectural search (NAS) and automating the search for optimal network architecture. The paper needs to target academic professionals and should be structured with the following sections: Title page Table of contents Text part with introduction, main part, conclusion Bibliography The ideal candidate should have: - Previous experience writing academic papers, particularly in the field of AI or machine learning. - A deep understanding of neural architectural search. - Excellent writing and research skills. You're not under time pressure. I'll share more details about this project.

...comprehensive financial model for my metal can manufacturing project. The model should assess the feasibility of the project, with a focus on several specific financial outputs. Key Deliverables: - Cash flow projections - Profit and loss statements - Break-even analysis - Financial Ratios - Market Research I have some existing financial data and projections available for this project, which I'll share with the successful freelancer. Ideal Skills: - Strong background in finance and financial modeling - Experience in the manufacturing sector, particularly with metal can production - Excellent analytical skills - Proficient in market research and financial ratio analysis A deep understanding of the manufacturing industry and financ...

I'm seeking a ghostwriter to craft engaging, conversational LinkedIn posts and short articles for me, an intellectual property lawyer. The posts should appeal to potential clients and cover a range of topics including legal advice and insights, industry trends and updates, and personal experiences and stories. Ideally I'm looking for someone who can help me brainstorm ideas for posts and articles, draft those posts, and then send them to me for final review and posting. My goal is to craft content to post every 1-2 weeks. Your writing should: - Be in a conversational tone, allowing for a friendly yet professional approach - Highlight my expertise in the legal field - Showcase my knowledge of industry trends - Share person...

More details: What specific tasks do you need help with in Microsoft Excel? Data analysis What type of data analysis are you looking for? Market research analysis Which financial metrics are you most interested in analyzing? Cash flow

I'm seeking a seasoned professional to assist with my NEBOSH diploma assignments. The help will mainly be focused on research and writing, covering all sections including the introduction and background, methodology and analysis, and conclusion and recommendations. Ideal Skills and Experience: - Proficiency in research and academic writing - Familiarity with NEBOSH diploma coursework and standards - Excellent understanding of safety and health topics - Ability to craft coherent, compelling arguments - Strong command of English grammar and syntax

I'm looking for a professional who can create math assessments in both Word Document and Publisher for Grades 5, 7, 8, and 9. I will provide the topics and types of questions, as well as the textbook students are using to ensure the assessments are at the appropriate level. Key Responsibilities: - Create 1 assessment for each grade - Follow provided guidelines in terms of format, fonts, sizes, etc. - Produce 3-5 sample questions for review and approval before proceeding Ideal Candidate: - Proficient in both Word and Publisher - Prior experience in creating educational assessments - Strong understanding of math topics appropriate for Grades 5-9 - Excellent attention to detail and ability to follow specific ...

...dedicated to delivering high-quality, innovative signage solutions that enhance brand visibility and impact. With a strong presence in the industry, we cater to diverse business needs, ensuring each project reflects creativity, precision, and excellence. Job Overview We are seeking an experienced and driven Lead Generation Specialist with 3+ years of proven expertise in identifying, nurturing, and converting leads into tangible business opportunities. The ideal candidate will leverage their knowledge and skills to build a strong sales pipeline, engage potential clients, and contribute to the growth of our business. Key Responsibilities Conduct in-depth market research to identify potential clients, industries, and business opportunities. Generate and qualif...

I'm seeking an engineer or designer with experience in creating scientific measurement devices. The project involves designing an automatic measurement device with a reflective sample (like a mirror or a piece of silicon stamp) that rotates around a VCSEL. Key Responsibilities: - Design the device to measure: - The actual position of the rotating arm - The position of the VCSEL - The operating current - Develop a software interface for controlling the measurements. Ideal Skills: - Mechanical engineering or similar background - Experience in designing scientific equipment - Proficiency in software interface design - Understanding of VCSELs and related optical components This device will be primarily used for scientific research. The ab...

I'm looking for an expert in keyword research to help improve the search rankings of my tutorial and how-to videos on YouTube. The primary goal is to identify effective keywords that will enhance visibility and ranking on YouTube's search platform. Ideal Skills and Experience: - Proficient in YouTube SEO and keyword analysis - Experience with tutorial and how-to video optimization - Familiarity with YouTube's search algorithms - Ability to deliver actionable insights and strategies Steps: - Find keywords in VidIq, All the keywords has to scored above >70 only to be accepted - Ensure The keywords are relevant to stock market only - The keywords has to be not the one we already have here :

Saya mencari Virtual Assistant (VA) (Full Online) untuk membantu tugas rutin di bidang marketing dan sales, seperti riset pasar, analisis data, dan pengumpulan informasi. VA akan fokus pada tugas pendukung yang bersifat administratif dan penelitian, tanpa terlibat dalam pengambilan keputusan strategis atau aspek kritis. Tugas utama: 1. Melakukan riset pasar, analisis kompetitor, dan pengumpulan data dari berbagai sumber (berita, jurnal, website). 2. Mengolah dan analisis data untuk kebutuhan sales pipeline, segmentasi pasar, serta enrichment data ICP dan buying committee. 3. Membantu penyusunan laporan metrik kampanye, revenue, serta administrasi program awareness dan demand generation. 4. Kerja 4 Jam Sehari, Mulai dari jam 13.00-17.00 WIB secara online, wajib responsive Yang Saya cari:...

************************ Don't Bid To This Project If You're Not Based In Malaysia ************************ We are seeking a highly driven and skilled Sales Development Executive with extensive knowledge of the automotive spare parts industry. The ideal candidate will play a pivotal role in expanding our international market presence, identifying growth opportunities, and fostering strong partnerships with key stakeholders across global markets. This role offers a competitive base salary, a fixed commission on each successfully closed deal, comprehensive medical insurance, and allowances, ensuring direct recognition and rewards for contributions to business growth. ***Key Responsibilities*** 1. Identify and pursue new business opportunities in over...

I need a professional who can help in the collection of quantitative data through surveys. Ideal Skills: - Expertise in designing and implementing surveys - Proficiency in data analysis - Experience in market research and user behavior analysis The main objective of this project is to gather meaningful data that can be used for various purposes such as market research, sales tracking, and user behavior analysis. Please note that the focus will be primarily on quantitative data. Freelancers with strong skills in survey design, data analysis, and market research are encouraged to bid.

...startup clothing brand specializing in men’s apparel, including T-shirts, hoodies, sweatshirts, and polos. Our vision is to redefine casual and stylish wear with an uplifting and energetic vibe. As a startup, we are looking for passionate individuals ready to grow alongside us and make their mark in the fashion industry. --- Position: Fashion Designer (Men's Apparel) Type: Full-time / Freelancer Location: Remote Work Hours: 10:00 AM to 4:00 PM (Monday to Friday) --- Key Responsibilities: Design unique, trendsetting men’s apparel (T-shirts, hoodies, sweatshirts, polos) aligned with the OFFTHRUST brand. Develop sketches and digital designs using tools like Adobe Illustrator, Photoshop, or CLO 3D. Select appropriate fabrics, colors, and patte...

...seeking a skilled designer to create a professional, tech-inspired presentation for my app, "Ain". This cutting-edge app integrates AI and sensors to promote sustainable living by managing water. Key aspects to cover: -Show the challenge first - like: -Growing Global Crisis: Urban buildings contribute to water wastage (show graphs) -Inefficient Monitoring: Lack of real-time data for decision-making -Outdated Systems: Fail to engage users or provide actionable insights - Urgent Need: Modern, user-centric solution for sustainable practices -Introduce the app and its purpose - How the app works - Highlighting the app's unique features - Presenting the market potential for sustainability solutions ...

Project Title: Complete Website Redesign with SEO Optimization for a Professional Look Description: I am seeking an experienced web developer/designer to completely revamp my existing website, www.drugtesters.net. The goal is to create an outstanding, professional, and modern website that not only looks visually appealing but is also fully optimized for SEO to improve visibility and rankings. Project Requirements: Website Redesign: Modern, clean, and professional design. Responsive and mobile-friendly layout. Easy navigation and user-friendly interface. Content Optimization: Organize existing content for clarity and impact. Provide suggestions for improving the overall content layout. SEO Integration: Keyword research and implementation. On-page SEO ...

I'm looking for a professional to develop a custom Google Site for my business. The site will serve as a comprehensive business portal and intranet. Key Responsibilities: - Design and build a Google Site that includes various sections such as: - Company Policies - Event Notifications - Standard Operating Procedures (SOPs) - Research Reports - Quarterly and Annual Reports - Picture Gallery - Current Updates - Ensure that the site is user-friendly and easy to navigate Ideal Skills: - Extensive experience with Google Sites - Web design skills - Understanding of intranet functionalities - Ability to present information clearly and logically - Prior experience creating business portals Please provide examples of previous Google Sites you'v...

Hello, I will perform medical research for categorisation of the provided data. Thanks and regards

I'm looking for a skilled content writer to create a casual-toned 'About Us' section for our company. The primary focus should be on our company's history, milestones, and our unique team and company culture. This section will be aimed at potential clients and customers, so it should convey our values, ethos, and the journey we've been on in an engaging and accessible way. Ideal skills and experience include: - Proven track record in content writing, particularly for corporate 'About Us' sections - Ability to write in a casual yet professional tone - Strong understanding of brand storytelling - Experience in writing for potential clients and customers - Excellent research skills to accuratel...

I'm in need of a dedicated professional who can conduct thorough online research and compile the gathered information into organized spreadsheets and documents. Ideal skills and experience for the job: - Proficient in online research - Strong skills in Microsoft Excel and Google Sheets - Ability to create clear and comprehensive documents - Experience in market research and competitor analysis - Excellent understanding of customer insights

I'm seeking a professional writer to help me craft a compelling personal statement for my PhD applications. Key elements to highlight: - My academic achievements - My professional experience - My research interests The tone of the statement should be formal and academic. Please note, I have specific prompts from the PhD application that need to be addressed. Ideal candidates will have: - Proven experience in academic writing - A strong understanding of PhD application processes - Excellent communication skills - Ability to transform complex ideas into clear, formal language.