Power system analysis design university jobs

I'm urgently seeking a skilled developer to set up a Helios 2 Lidar camera for detecting human figures and calculating distances up to 10 meters. Key Requirements: - Proficiency in setting up and customizing Helios 2 Lidar camera - Mastery of object detection, specifically human figures. - Capable of implementing short-range distance calculation (up to 10 meters) The project demands someone who has a strong understanding of Lider camera configurations, and advanced skills in object detection and distance measurement methodologies. Your competence in creating systems to accurately detect human figures and calculate short-range distances will be the driving forces behind the success of this project.

I need a Python code developed for vehicle route optimization. - The code should include 3 algorithms for route optimization. - Successful freelancers should include past work in the application. Ideal Skills: - Proficiency in Python - Experience in developing route optimization algorithms - Strong background in data analysis, web scraping, and machine learning, as these functionalities will be required in the project.

...modulated signal which is amplified at high power. The signal is genrated within the circuit so no user input is required. - This project has been worked on before and an added varible resistor and mosfet will be needed as well as the most important part which is power management which can be done with component selection or circuit alterations. - The purpose is a prototype development, which means you'll be instrumental in bringing my concept to life and preparing it for eventual manufacturing. - The PCB design will incorporate analog components, so expertise in working with these components is a must. You should be comfortable explaining and justifying your design choices based on this requirement. Skills and Experience: - Proven experience in P...

I'm looking to upgrade my current system, perhaps keeping the current Opencart (V1.52) system and working with it where possible... unless its deemed a rebuild is cost effective. The opencart system we use has been added and modified over time, hence it is not possible to simply upgrade to a newer opencart version. The business we operate in is parts for coal and wood fires, this is a business that is reducing overtime, due to environment issues, however, the stove market has recently had a mini boom due to gas prices being high with a record number of new stoves being sold over the last 3 years (we do not sell new stoves, just the parts for these stoves). We expect to see at least another 5 years from this business. We have been told by our current developers...

As the owner of the company, I'm looking for expertise to comb through my Google Ad account and analyze certain specific aspects: - Ad copy effectiveness - Keyword performance - Competitor analysis My primary goal is to increase the click-through rate(ICTR) of my ads. I'm aiming to tweak the copy to attract more eyeballs and encourage the audience to take action. Therefore, proven past experience in creating high-performing ad copy is requested for this project. Furthermore, we've observed that our keyword performance seems to be hindered by high cost-per-click (CPC), which is significantly affecting our advertising budget and the overall ROI of the campaign. I'm keen to work with someone adept at managing and improving the CPC in Google Ads. Therefore, the i...

I have three separate Excel documents that need to be merged into a single, optimized sheet. In this new file, we should only pull specific data columns including Defect ID, Defect Type, Date Opened, Priority, Description, Reproduction Steps, Actual Result, Date Closed, Assigned To, and Comments. These columns must be combined while maintaining clarity and structure....and digestible manner. Ideal candidates for this project are those with: - In-depth expertise in Excel data management - Experience in creating dynamic dashboards - A competent hand at data visualization techniques utilizing charts. Your job will be to deliver a user-friendly Excel sheet and a visually appealing, functional dashboard. Through this, we hope to improve our project tracking and analysis. I need this d...

...a skilled individual to develop a sophisticated sentiment analysis and recommendation system that can analyze aspects of customer reviews for a product. The primary goal of this system is to: - Identify positive aspects - Identify negative aspects - Provide recommendations based on customer reviews Key Requirements: - The system should be able to analyze multiple aspects of a customer review, specifically battery, camera, price, display, and performance. - For each aspect, the analysis should include both positive and negative sentiment. - The system will need to provide insights on the reviews based on the sentiments detected for each aspect. Ideal Skills: - Proficiency in Natural Language Processing (NLP) and Sentiment Analysis - E...

I a...and efficient data entry specialist to help organize information and perform basic analysis on word documents. Key Responsibilities: - Organize information effectively and efficiently - Perform basic analysis on the data Ideal Skills and Experience: - Proven experience as a data entry specialist - Excellent knowledge of word processing tools and spreadsheets - Basic understanding of data analysis techniques - High attention to detail and accuracy - Good command of English - Familiarity with copyrighting is a plus This project requires someone who can work with speed and accuracy, while maintaining a keen eye for details. If you are well-versed in data entry, have a good understanding of basic data analysis and are interested in copyrighting, I would be ...

...during copy 3 Text Analysis: Analyze the copied text for various metric such as word frequency readability score sentiment analysis or topic modeling. This can provide insight into the writing style tone and themes present in the text. 4 Statistical Analysis: Calculate statistical metrics such as word count average sentence length or vocabulary richness to gain deeper insights into the writing style and complexity 5 Visualization: Create visualizations, such as word clouds histogram or scatter plot to represent the analyzed data in a more intuitive and understandable way. 6 Interpretation: Interpret the results of the analysis, drawing conclusion about the writing style, theme or effectivenes of the writers works 7 Reporting: Summarize the findi...

...reliable and secure payment system to facilitate trade transactions. - User Profiles and Dashboards: Customizable user profiles and intuitive dashboards for a smooth user experience. - Mobile Accessibility: The platform must be accessible and user-friendly on both mobile and desktop devices. - Security and Data Privacy: Robust security measures to ensure data safety and privacy for all users. - Integration with Third-Party Services: Seamless integration with relevant third-party services and tools. - Advanced Charting Tools: Comprehensive and advanced charting tools for in-depth market analysis. Ideal Skills and Experience: - Proficiency in developing trading platforms, particularly for commodities - Strong grasp of real-time data integration and analysis ...

I'm in need of a comprehensive business analysis report focusing on the following aspects: - **Main Objective**: The primary goal of this report is to identify our business needs, define the scope of analysis, and understand our current business context. - **Audience**: The report will mainly serve our project stakeholders, hence it should be tailored to meet their expectations. I believe that the stakeholders will find the following information most valuable: - **Market Trends and Analysis**: This will help them understand the external factors that may influence our business and its competitiveness. - **Competitor Analysis**: Insights into our competitors are crucial for making strategic decisions and staying ahead in the market. - **Customer Insights a...

I'm a data science student needing assistance specifically in the areas of maths, linear algebra, and probability. Here's what I'm looking for: - Expertise in data analysis, machine learning, and data visualization - Mastery in maths, particularly linear algebra, and probability - Ability to provide advanced assignments and problem-solving strategies to strengthen my grasp of these subjects The ideal candidate for this project will have strong analytical skills and a deep understanding of complex mathematical principles involved in data science. You should be able to articulate complicated concepts concisely and clearly, since the level of difficulty I'm currently faced with is quite advanced. Your role will largely involve providing resources and guiding me th...

I am seeking a skilled freelancer to assist in the finetuning of a Language Model (LLM) tailored to our specific use case. Our requirement involves ensuring compatibility with functionality calling, enabling seamless integration into our existing systems. Skills Required: Proficiency in Natural Language Processing (NLP) and Machine Learning (ML) techniques. Experience in finetuning Language Models, particularly with models like GPT (Generative Pre-trained Transformer). Strong understanding of functionality calling and integration within software systems. Ability to conduct thorough testing and validation procedures. Excellent communication skills and attention to detail.

I'm on the hunt for a skillful coder proficient in web scraping, specifically for Website A. The goal of this project is for obtaining valuable and significant data for analysis, competitive intelligence, and price comparison. While there's no explicit mention of the type of data to be scraped, I anticipate that a capable offering will cater to a variety of needs such as: - Text content - Image content - Metadata Ideal Experience and Skills: - Proven experience with web scraping - High proficiency in handling large data sets - Comfort in navigating Website A - Ability to collect comprehensive data categories Looking forward to a potential collaboration to achieve this goal!

We have the map design! I'm in need of a skilled developer who can create a city-specific interactive map paired with a versatile booking system. Key Requirements: - Custom Interactive Map: The primary focus of this project is to develop an engaging and functional city-specific map. Users should be able to easily navigate through the city's various locations, businesses, and landmarks. The map should be visually appealing and intuitive to use. - Booking System: The secondary component of this project is the implementation of a versatile booking system. This system should support various types of bookings, including appointment scheduling, room or venue booking, and event ticket reservations. Skillset: - Proficiency in Interactive Map Developm...

I'm in need of someone who can create a small college project based on blockchain technology. I'll provide the codes and other stuffs required. The person just needs to debug some errors and do some front end and back end work. Key Requirements: - Capable of using Remix, CSS, and Java Script for the project. - Understanding of blockchain fundamentals, including user authentication, data encryption, and smart contracts. Please feel free to share your past work and experience related to blockchain, along with any detailed project proposals you might have.

We are seeking an experienced PCB de...designer to develop a custom printed circuit board for a Raspberry Pi 4 Model B application. The project requires integrating specific components and ensuring the design can be enclosed within a standard industrial box. The successful applicant must have experience with power management and GPIO pin utilization. Key Requirements: - Experience with Raspberry Pi designs and GPIO pin functions. - Ability to integrate electronic components such as 5V relays into the PCB with high precision. - Familiarity with standard industrial connectors and terminals. This project aims to create a highly functional and reliable hardware system. Only applicants with a strong track record in custom PCB designs and the ability to work to exact spec...

I'm in need of a skilled software developer to create a custom appraisal system for my textile company. The software should be designed strictly for Windows OS. Key Features: - The primary function of the software should be an assessment tool that can be used for a variety of purposes, such as employee performance tracking, feedback collection, and goal setting and tracking. - The assessment tool should be designed with a mix of multiple choice questions and open text input. Ideal Skills and Experience: - Proficiency in Windows software development. - Experience in creating assessment tools within the software. - Knowledge in developing software for the textile industry would be a plus.

I have a set of working drawings for an apartment which I want to modify based on some minor revisions to the layout. Drawings include layouts only for - HVAC - fire alarm - lighting - power - water supply - drainage

Your job is to develop a RESTful API only, no website, no UI of any kind. The API would work something like GET After called, the API will return a JSON response that contains all the data from sample reports. In other words, this API would perform a similar AI based analysis of the given website URL and produce a JSON format response of that. The website is provided here as a sample of the report to produce, we are NOT using its API. In your bid, please specify what third party libraries and/or APIs you would use, such as what APIs from Huggingface, RapidAPI etc. I want this to be developed with PHP and/or Python. Pure PHP solution would be preferred

We are from De Risc Backgrounding screening company based in UAE. we want to verify an Education certificate from a institute in Odense, Denmark. I am in need of Education verification services for my pre-employment vetting process. Skills and Experience Required: - Experience in conducting education verification checks - Familiarity with the educational system and institutions in University Of Southern Denmark. Additional Information: - Attention to detail and accuracy are crucial in ensuring the accuracy of the verification process. Candidate Volume: - The project involves vetting 1-5 candidates. Please note that this project does not require additional verification services. If you have the necessary skills and experience to assist with this project, I'd be keen ...

I am working on developing the SEO on these 4 Wordpress sites. The niches of the websites include Power Washing, Home Painting, and Roofing. I am in need of a skilled SEO account manager capable of managing these services: Website SEO Citations and Backlinking On Page and Off Page SEO Blog Writing Local SEO Google My Business Management Keyword Research Google Ads if necessary

For this project, I'm looking to signifi...particularly by adjusting the blade thickness and observing its impact on the overall performance - Reduce cavitation within the system through careful material selection and design refinements - Experiment with different unidentified materials for the turbine blades to determine the best option. I have a specific goal to increase energy generation, and thus, the ideal proponent for this task will be someone with an understanding of fluid mechanics and experience in optimization of hydrokinetic turbines. CAD design skills for blade prototyping and knowledge of material science will also be highly beneficial. Experience with experimental design and data analysis to quantify the impact of different bla...

I am in need of an Excel professional with an intermediate level of proficiency to assist with various tasks on my project. The specifics of these tasks are open for discussion, therefore a degree of flexibility and adaptability is required. You should ideally have proven experience with data analysis, spreadsheet automation, and formula creation despite the fact these haven't been specified outright. An overview of your past relevant projects included in your bid would be highly appreciated. Convince me with your technical prowess and past success stories.

I'm looking to have a tool developed that can analyze biological microscopy images, specifically with features such as color segmentation, edge detection, and cell counting. The tool should also support universal data import and corrections of alignment and image rotation. Ideal candidates for this project should have: - Strong proficiency in Python and Java - Previous experience with image analysis and microscopy imaging - Fiji, Maven, Eclipse preferred - Bio-formats - Would be great if you have experience in setting up a Fiji plugin (post your work)

...do marketing research on curtains in Amazon, Flipkart , Google and other online market places in a comprehensive competitor analysis. Key project points: - Industry Focus: Your primary focus will be the technology market. - Data Requirement: The most important aspect of this research is competitor analysis. Insight into their strategies, strengths, and weaknesses will be vital. - Deliverable: I am looking for the research findings to be presented in a clear and concise written report. Ideal skills and experience for this job include a deep understanding of marketing research in the tech sector, a proven track record in competitor analysis, and exceptional report writing capabilities. The ability to present complex data in a coherent, easy-to-understand manner is...

I'm seeking an experienced freelancer to conduct an in-depth research on the electric instant and storage water heater market in Bahrain. The task involves a comprehensive analysis of: Requirements (must live in Bahrain Manama): 1. Identify Top Retailers: List the top 5 major home appliance retailers in each country. 2. Document all Water Heater Brands in the store (focus on electric instant and storage water heaters): Visit 1x store (pick the biggest and most popular store) of each Major Retailer. Then compile a list of popular water heater brands, including pictures, prices, and key features. Highlight the most sought-after brands in each country. 3. Online Platforms: Document online platforms selling water heaters, providing links to their websites and additional informatio...

I'm looking for a skilled writer who can provide a comprehensive psychoanalytic analysis of Joseph Conrad's "Heart of Darkness" and its film adaptation "Apocalypse Now". The main goal of this analysis is to deeply explore the themes of darkness and human nature. Key Requirements: - Focused on the overall narrative and its psychological implications - Comprehensive analysis with detailed examples and theories - No specific focus on individual characters; focus should be on the broader narrative and themes - Extensive understanding of both the novel and the film adaptation Ideal Freelancer: - Proficient in literature analysis, particularly in psychoanalysis - Excellent writing skills and the ability to effectively translate complex...

I'm looking for a freelance graphic designer with experience in modern, sleek logo design to help revamp my current logo to improve my brand identity. It should be state of the art (I think gradients are not used in logos anymore). Key aspects of the project include: - Emphasizing on abstract geometric shapes to create a unique, contemporary look. - Ensuring the design stays modern, yet displays a strong, clear identity - Prioritizing brand recognition and impact in the final design Ideal candidates would be those with a strong portfolio in modern logo design and brand identity development. A deep understanding of current trends, especially in the IT sector will be greatly valued. Excellent knowledge of color theory and the psychological connotations of s...

Need help with a simple task that involves writing simple SQL statements and completion of the relevant ER diagrams. This task is in the context of simple data analysis. To be completed within 2-3 days.

I'm in need of a freelancer who is proficient in document verification services from Sasolburg and University of Pretoria. Your role is to help me authenticate the credibility of the documents I have from these institutions. Key Responsibilities: - Verify the authenticity of my identification documents, university certificates, and employment records from the respective institutions. - Provide a detailed report on the outcome of the verification process. Ideal Skills and Experience: - Prior experience in document verification services is highly desirable. - Knowledge of the procedures and systems of the institutions in Sasolburg and University of Pretoria. - Strong attention to detail and ability to accurately evaluate the authenticity of documents. - Excellent ...

I'm in urgent need of skilled professionals with experience in MySQL and Digital Ocean recovery console. My MySQL server is locked and I require assistance in exporting a SQL file. The exact c...MySQL server is locked and I require assistance in exporting a SQL file. The exact cause of the server lock is not currently known but it might be due to server resource overload or a potential security breach. Required Skills: - MySQL - Knowledge of Digital Ocean's recovery console - Server management The main objective of the task is: - Successfully export the locked SQL file for further analysis and resolution - Provide insights on the potential cause of the server lock for future prevention. Experience in server management, specifically in handling locked servers, will be a...

I am looking for a f...am looking for a freelancer with advanced expertise in Power BI for a sales trend analysis project. The goal of this project is to create a comprehensive sales trend analysis. This analysis will be primarily presented through tables and matrices. The purpose is to provide a clear visualization of sales data and to help me identify key patterns that I can use to inform my business decisions. Key requirements: - Advanced expertise in Power BI. - Proven experience in designing and implementing complex scenarios in Power BI. - Ability to create compelling and clear visualizations in tables and matrices. This project is time-sensitive, and I am looking for someone who can start on this as soon as possible. A background in sales...

...Correctness of Sequential Search: This aspect of the project is particularly important to me. I am looking for an individual with a deep understanding of algorithm analysis, who is capable of creating a detailed mathematical proof to validate the correctness of the sequential search algorithm. - Project Abstract: While the project abstract is not the main priority, it is still an essential aspect that should be executed properly. An ideal candidate would have the skills to help craft a concise yet comprehensive abstract that encapsulates the core essence and findings of the project. Besides showcasing proficiency in algorithm analysis, the ideal freelancer for this job should possess exceptional mathematical abilities. More importantly, you should be proficient in the i...

As a business owner, I'm seeking a skilled digital marketer to manage my company's Ads campaign of lead generation among general consumers. As a Coaching Company we train people on A.I tools like Power BI. We sell our certification course at the most affordable price & certify people as Power BI Expert. Our Audiences are Working Professionals in IT, Sales, Operations, Management, Finance, Accounting, etc. Your Job: - Identifying potential Consumer leads by running free workshop campaign - Giving Quality of leads who can convert after attending our free workshop Milestone : -Quality Leads Target Required Skills and Experience: - Proven track record of successful lead generation in the technology industry - Familiarity with lead generation methods - Exc...

I am in need of a proficient content writer who is well-versed in market research report writing and is inclined towards fashion and fashion industry. The core focus of the research will be on kids athleisure-wear in the industry. Skills & Experience: - Exceptional writing skills with a background in marke...market research report writing - Extensive knowledge and understanding of kids' fashion industry or an inclination towards doing so. - Strong ability to research, analyze and interpret fashion market trends - Proven track record in creating engaging, informative, and well-structured content Your task will be to produce content for a comprehensive market research report that provides an in-depth analysis of trends, consumer behavior, and market opportunities in kid...

I'm in need of a professional who can thoroughly analyze the structural design of a building using STAAD Pro. The ideal candidate for this project should have: - Proficiency in STAAD Pro software - A background in structural engineering - Prior experience in conducting design analysis for buildings Your application should include examples of your past work, particularly those related to structural engineering and design analysis using STAAD Pro. Please feel free to share any relevant information or case studies.

I'...company scale up. • Expertise Required: - Comprehensive financial planning including budget, cash flow, and investment strategies. - Market research and demographic analysis to develop a strategic marketing plan. - Creating a resilient business plan based on the above, specifically aimed at growth. • Marketing Channels: - Familiarity with a variety of channels is preferred but is not mandatory. The ideal candidate should have a strong background in strategic financial planning and business consulting with demonstrable understanding and experience in creating tailored marketing strategies. Knowledge of location analysis is a big plus. Your insight will be crucial in driving our business forward, so previous experience in scalable growth proj...

I'm searching for an expert in Microsoft Power Automate to set up 3 automated workflows as an intitial test: Flow 1: If a new email is received use this as a trigger to check if a new email is in another outlook 365 folder, if there is, save the attached excel file as a csv and rename the csv file the date of the email in YYYYMMDD format and save to a folder in onedrive for business. On successful completion send an email confirming success. >If there is no new email in the other outlook 365 folder, email our info@ email address notifying that it is not present. Repeat the checking process 2 days later until successful Flow 2: If a new email is received use this as a trigger to check if a new email is in another outlook 365 folder, if there is, unzip the attachment using...

I'm looking for someone to help me set up Zobot Zoho for my cus...chat: I want my customers to be able to easily chat with our agents. - Implement automated ticketing: I need the system to efficiently create and manage support tickets. - Set up FAQ self-service: I'd like to reduce the workload on my team by having a self-service option for common queries. The ideal freelancer will have: - Proven experience in setting up Zobot Zoho - Strong understanding of customer support systems - Familiarity with integrating live chat and ticketing systems - Ability to create a user-friendly FAQ self-service interface - Excellent communication skills to ensure a smooth handover to my team. Please note that my team consists of 5-10 agents, so the system will need to be designe...

I'm fairly new to R, but need to apply linear regression to predict an outcome. I'd be grateful to work with someone who can guide me through this process. Ideal skills: - Expertise in R - Profound understanding of Linear Regression Experience: - Previous projects involving regression analysis - Proven results in predicting outcomes using R

I have a set of handwritten notes that I need to be typed into an Excel sheet. The data is purely text - no numbers or dates. The final Excel sheet should have basic formatting applied. This includes: - Consistent font and text size - Proper spacing betwe...into an Excel sheet. The data is purely text - no numbers or dates. The final Excel sheet should have basic formatting applied. This includes: - Consistent font and text size - Proper spacing between entries - Clear cell borders Please ensure that the formatting is logical and enhances the readability of the information. The content itself is quite straightforward and does not require complex analysis or manipulation. Ideal skills: - Proficiency in Excel and data entry - Attention to detail - Basic understanding of formattin...

I am in need of an SEO professional who can perform comprehensive competitor analysis, particularly focusing on their organic keywords, for three of my websites. I will provide the specifics of the competitors that need to be analyzed. I require a skilled professional to analyse specific data for SEO and PPC purposes. The key areas of focus would be: This is a two part job. I want to know a price for two separate jobs: 1. I have three websites and I need to know what their seo keywords are, and what their ppc ads are. I also need the monthly search volume, and google spot they rank for. 2. After you have the SEO and PPC keywords available, once I receive this list, I will then condense it and give you approx. 30 keywords in return that I need to know CPC for. Skills and Expe...

I'm seeking a freelancer who can help with a data analysis project, translating numerical data from one sheet to another. - The main task for this project is copy texting, involving the transfer of numerical data. The ultimate goal is to enhance data analysis. This will require a high level of accuracy and attention to detail. - The results of the data analysis should be presented in the form of charts and graphs. Thus, experience with data visualization would be a great asset for this project. - The primary data type that you will be working with is numerical. Your understanding of numerical data and how to interpret it will be crucial for the success of this project.

I'm on the hunt for a skillful coder proficient in web scraping, specifically for Website A. The goal of this project is for obtaining valuable and significant data for analysis, competitive intelligence, and price comparison. While there's no explicit mention of the type of data to be scraped, I anticipate that a capable offering will cater to a variety of needs such as: - Text content - Image content - Metadata Ideal Experience and Skills: - Proven experience with web scraping - High proficiency in handling large data sets - Comfort in navigating Website A - Ability to collect comprehensive data categories Looking forward to a potential collaboration to achieve this goal!

I have a significant amount of text that needs to be typed into Excel quickly. The data is in a simple text format, no complex formatting required. Key requirements: - Proficient in Excel and typing - Attention to detail - Ability to work under tight deadlines The data is straightforward text and requires no specific formatting or analysis. The ideal freelancer will be skilled in data entry and be able to commit to a quick turnaround time.

We're in need...it into Graphical Trends and Text-Based Analysis. Key Role: * Develop logics for data interpretation and representation * Create a Professional and Formal UI/UX design for the report generator * Deliver finalized, error-free reports Ideal Experience: * Python expertise * In-depth knowledge of MYSQL and InfluxDB * Proven experience in creating dynamic PDF reports * A keen eye for formal and professional UI/UX design * Strong abilities in abstract reasoning and complex logic writing. Your role will translate our complex database information into understandable, well-structured and professional-looking reports, ensuring reliable insights. We're excited to work with a detail-oriented, highly skilled programmer who appreciates the power...

My project aims at developing measures to counter Zombieload side channel attacks. As techniques evolve, it's absolutely crucial to remain steps ahead of potential thr... - Utilizing distinct technologies, including Intel Performance Unite and Machine Learning algorithms as primary tools for model development. (Python, Tenser flow, Perf Linux, python PAPI) - This model will also include the analysis of Hardware Performance counters. The potential freelancer should possess a strong understanding of these tools along with expertise in cybersecurity and the development of prevention measures. A background in using network monitoring tools is also an advantage. Your contribution will greatly assist in enhancing the security of our system against Zombieload attacks and othe...

My project aims at developing measures to counter Zombieload side channel attacks. As techniques evolve, it's absolutely crucial to remain steps ahead of potential thr... - Utilizing distinct technologies, including Intel Performance Unite and Machine Learning algorithms as primary tools for model development. (Python, Tenser flow, Perf Linux, python PAPI) - This model will also include the analysis of Hardware Performance counters. The potential freelancer should possess a strong understanding of these tools along with expertise in cybersecurity and the development of prevention measures. A background in using network monitoring tools is also an advantage. Your contribution will greatly assist in enhancing the security of our system against Zombieload attacks and othe...

I need the power bi coder needed for multiple jobs.