Freelance python scripting työt
Työn kuvaus Traffic Lab etsii dynaamisia, itsenäisiä ja taitavia freelance-kirjoittajia tuottamaan erilaisia suomenkielisiä artikkeleita, tekstejä ja arvosteluja. Tekstien aihealueina ovat pääasiallisesti nettikasinot, kasinopelit ja muu rahapelaaminen. Katsomme eduksi jos aihealue on sinulle entuudestaan tuttu, mutta tämä ei ole lainkaan välttämätöntä. Tehtävänäsi on muun muassa kirjoittaa arvosteluja sekä erilaisia artikkeleita, joiden kohderyhmänä ovat suomalaiset kasinopelaajat. Materiaalin tarkoituksena on luoda internet-liikennettä sekä rekrytoida pelaajia suurimmille kasinosivustoille. Työpaikkanasi on koko maailma, voit työskennellä missä tahans...
Dataset + python + finance concepts
Työn kuvaus: Online markkinointi yritys etsii työkokemuksen omaavaa ja suomenkielistä online markkinoinnin ammattilaista auttamaan yrityksen pelialaan liittyvän sivuston mainonnassa. Annamme kuitenkin enemmän painoarvoa työkokemuksen sijaan oikeanlaiselle asenteelle ja suhtautumiselle työhön (työhön tarjotaan koulutus). Kyseessä on pitkäkestoinen projekti ja toivomme löytävämme työtehtävään luotettavan ja omistautuneen henkilön osaksi markkinointi tiimiämme. Vaatimukset: - Kokemus blogiyhteistyöstä ja vierasbloggaamisesta - Suomi äidinkielenä - Sujuva englannin kielen taito (kirjoittaminen sekä kommunikaatio) - SEO:n/ sisältömarkkinoinnin/ sosi...
Hei, Tahdotko lähteä mukaan mielenkiintoiseen seikkailuun, jossa pääset kehittämään ja kehittymään? Juuri tällä hetkellä etsimme sopivaa henkilöä mukaan kaupallistamaan suomalaista vauva-, lapsi- ja perheaiheista sivustoamme. Sivustollamme on jo kymmeniätuhansia kävijöitä kuukausittain, joten alkuvuodesta on tarkoitus ottaa seuraava askel sivuston kehityksessä. Teemme hommia tosissamme, mutta pilke silmäkulmassa. Meille on tärkeää, että viihdyt projektissa, ja koet sen omaksesi. Tunnistatko itsesi? - Olet ennakkoluuloton, rohkea ja kunnianhimoinen henkilö, jolla on kova halu tehdä ja kehittyä - Sinua ei tarvitse vetää eikä ty&...
Periodista y fotoperiodista freelance para barcelona y badalona
...meidän uutta ja mielenkiintoista projektia. Tehtäviisi kuuluu tuotenäytteiden jakamista, kertoa asiakkaille eri tuotemerkeistä ja osallistua myyntikampanjoihin mitä ko. liikkeet kulloinkin tekevät (esim. tuotemyyntiä tai näytejakeluja tai asiakkaiden kannustamista ottaa osaa kilpailuihin). Työajat ovat joustavat mikä tekee työstä houkuttelevan esimerkiksi niille, jotka hakevat lisätienestiä freelance-tuloihin tai opiskelijabudjettiin tai joilla on jo yksi työ. Kuukausipalkkasi tulee olemaan 1100-1200€ riippuen viikonloppuvuoroista (13€-15€/tunti n. 20h per vko) + kannustimet. Työ alkaa tammikuun puolessa välissä. Työskentely Helsinki-Vantaa lentokent&au...
Haussa osaaja! Osaat tyylitellä taitavasti CSS:n ohjeistuksen mukaiseksi, ja tunnet jokaisen Wordpressin haasteen ja mahdollisuuden tarkkaan. Apua tarvitaan ensin vain yhteen projektiin, johon suurin osa CSS-tyylittelyistä on jo tehty, mutta muutama ongelmakohta kaipaa vielä kokeneempaa tyylittelijää. Jos sopiva freelance-tekijä löytyy, tarjolla on tulevaisuudessa niin Wordpressiin kuin muihinkin CMS-järjestelmiin liittyvää työtä. Hinnoittelumalli sovittavissa.
Mencari freelancer 3D modelling on project basis.
My project requires an expert in machine learning, particularly with a focus on using Python for neural networks. Ideal Skills and Experience: - Proven experience in machine learning projects - Expertise in Python programming - Proficiency in neural network programming - Strong understanding of deep learning Your understanding of machine learning principles, advanced Python programming, and neural network frameworks will be pivotal to the success of this project. Please detail your relevant experience and provide examples of similar projects.
I'm looking for a skilled Python developer with experience in web scraping and Selenium. Your task is to extract a domain list from a given URL (). The data extracted should be cross-referenced for each domain with the following fields: name, full address, email, and phone. Key Requirements: - Extract domain list from a specific website () - Implement cross-referencing for each domain with name, full address, email, and phone - Proficiency in Python and Selenium for web scraping - Ideally, experience with data cleaning and manipulation Please note that the number of records on the dealer locator is unknown. Your ability to handle large data sets will be crucial for the successful completion of this project.
I'm looking for an experienced Python developer who has previously worked with options Greeks and the Zerodha API. Your main tasks will involve: - add third order greeks to an existing code The ideal candidate should have a strong command over Python, especially the Pandas library, and a thorough understanding of financial markets, particularly options Greeks. Prior experience working with the Zerodha API will be highly beneficial for this role. I look forward to your proposals!
...a skilled developer who can create a tool that utilizes Google Chrome to perform searches and click on search results multiple times. Key Project Requirements: - The tool should be built using Python, Java or Visual Basic - The primary goal of the tool is to perform automated web browser searches and click on various results - The tool should utilize Google Chrome as the web browser To give you a better idea, the tool should: - Conduct multiple web searches on Google - Click on a configurable number of search results from the returned search page Ideal Skills and Experience: - Proficient in Python, Java or Visual Basic - Experience in browser automation and web scraping - Familiarity with Google Chrome's automation capabilities If you have experience with similar ...
Project Title: Comprehensive Mechanical Design and Technical Drawing for Parasol Mechanism Project Overview: We are seeking a skilled and detail-oriented freelance mechanical engineer or designer to work on a comprehensive mechanical design project. The project involves selecting an appropriate architecture for various linkages, creating a CAD model of a mechanism, and effectively communicating through technical drawings. Project Requirements: Architecture Selection for Each Linkage Estimated Time: 3 hours Evaluation Criteria: Creation of a simplified specification sheet Identification and characterization of functions and constraints Hierarchization and creative problem-solving using FAST diagrams Proposal of solutions with clear schematics and sketches Value analysis including...
I'm in need of a skilled Python developer to work on a web scraping project. Key Requirements: - I'm primarily focusing on Web scraping as the main functionality for the project. - You should be well-versed in Python and have a proven track record in data analysis. - Knowledge of web scraping is essential to ensure efficient and reliable data extraction.
This is a full-time remote role as a Freelance Model at Tavia Group . Our company is based in Hongkong, China and has the clients all over the world, especially in Europe and America. We have the platform for promoting the daily life contents. Description : The models are required to send 50 photos and 20 vides of their daily activities per month to the Client Manager and the management will post the materials on our website. Fee up to US $ 700/month Qualifications : Male/Female Non hijab for female models Asian look Age between 30 - 65 years old Ability to pose and express emotions in front of the camera Excellent facial features and a photogenic appearance Good physique and body proportions Confidence and self-presentation skills Professionalism and reliability Ability t...
My project requires an expert in machine learning, particularly with a focus on using Python for neural networks. Ideal Skills and Experience: - Proven experience in machine learning projects - Expertise in Python programming - Proficiency in neural network programming - Strong understanding of deep learning Your understanding of machine learning principles, advanced Python programming, and neural network frameworks will be pivotal to the success of this project. Please detail your relevant experience and provide examples of similar projects.
...services and require a freelancer's expertise to assist with setting up my business structure and developing a strategy to acquire clients. The ideal candidate should have: - Experience in business consultancy, particularly in setting up new businesses. - Knowledge of legal and financial business structure requirements. - Proven strategies for client acquisition and marketing, especially for freelance or B2B services. - Ability to provide personalized advice for a startup in the data processing domain. The project will involve: - Assessing the best business structure for my services (Sole Proprietorship, LLC, etc.). - Guiding through the necessary legal and financial setup procedures. - Developing a clear and actionable client acquisition strategy. - Creating a marketing ...
I'm in need of a skilled Python coder to assist me in deploying Locally Hosted Language Model (LLM) applications. Here are the details: - **Operating System**: The deployment is hybrid, so familiarity with Windows, macOS, and Linux is ideal. - **Purpose**: The primary aim of the deployment is for text ebedding (vector db) and generation. - **Requirements**: Specifically, I'm looking for functionality related to Language modeling and retrieval augment generation in the LLM applications. - mongoDB should be set up runining a .sh file - docker-compose deploy of the app - whisper transformers for stt ttl - AWS S3 bucket for file serving Essential skills for this project include a strong background in Python programming and experience with deploying applications on di...
...between Raspberry Pi and Mitsubishi Driver (Model:MR-J5W3-222G) - Writing code for controlling the servo driver from the Raspberry Pi - Testing and debugging the system - Providing support for any issues that may arise during the project Previous experience with Raspberry Pi and Panasonic Servo Drivers is a must. Additionally, the ideal candidate will have a strong understanding of programming in Python, as well as a background in robotics or industrial automation. GUI in Raspberry Pi will have START button. When we click on start button: Step 1: Communicate with Start Panasonic Servo Driver 1 to rotate the Servo motor in Clockwise direction and stop and a fixed position. This position we have to confirm with testing. Step 2: After the Servo 1 STOP. Panasonic Servo Driver...
Estamos buscando un desarrol...realizar customizaciones en ODOO. - Colaborar en la integración de ODOO con otros sistemas. - Participar en el diseño y desarrollo de soluciones basadas en ODOO. - Realizar pruebas y depuración de código. - Mantenerse actualizado sobre las últimas tendencias y tecnologías en ODOO. Requisitos: - Experiencia demostrable en el desarrollo de aplicaciones utilizando ODOO. - Conocimientos sólidos en Python y Odoo Framework. - Capacidad para trabajar de manera autónoma y en equipo. - Excelentes habilidades de comunicación y resolución de problemas. - Certificación en ODOO (deseable pero no indispensable). Beneficios: - 100% Remoto - Salario competitivo. - Oportunidades de crecimien...
I need a Python program that can tap into Yahoo's fantasy football datasets using their API and extract various essential pieces of historical league-specific information. The main requirements of my project include: - Extracting information like player statistics, team standings, draft results, transactions (trades and adds/drops), weekly schedules (head-to-head matchups by week), weekly lineups, scoring settings, and league settings The Yahoo API Endpoints you'll need to use as inputs to derive the above data extracts for a particular league are: - the associated League ID (each league created by Yahoo is given it's own unique ID that a league member can provide) - the associated Game Key (there is a unique Game Key provided by Yahoo by fantasy sport and by year) ...
...capabilities. While I did not specify a preferred programming language, I need someone versatile in universal languages such as C++, Java, or Python. Key features and requirements: - Data Management: The application should seamlessly handle data input, output, storage, and backup. - Report Generation: A core feature should be to generate real-time, insightful and efficiently formatted reports from the managed data. - User Authentication: A secure user authentication process is essential, ensuring only authorized users get access to data or functionality. Ideal Candidate: - Comprehensive experience in diverse programming languages (C++, Java, Python) - Expertise in developing applications with data management, report generation and user authentication features. - Probl...
I'm looking for someone with experience with APIs and SDKs in Python who can guide me through successfully connecting to the Kwenta SDK. Your main task will be to help me connect it, so I can execute the order. I'm looking for someone who can explain things clearly and concisely, and is available to answer any follow-up questions I may have.
I have a web scraper script that needs fixing. It's designed to scrape various URLs from the Apollo webs...properly, and needs to be fixed. - URL scraping: The script should be able to successfully pull the data from the selected URLs on Apollo website. Experience with: - Web Scraping: Previous experience in web scraping is essential, as the data needs to be pulled accurately from this specific website. - Script Debugging: Ability to identify and fix issues within an existing script. - Proficiency in Python or relevant language for web scraping. - Knowledge of Apollo website structure. Please make sure your bid includes information on how you plan to approach fixing this script. Open to suggestions on alternative approaches as well, as long as they can meet the required d...
We are seeking a talented freelance graphic designer to create a professional TriFold brochure for our heavy-duty truck repair shop, consistent with the branding and style of our website, prospecdiesel.ca. The brochure will have a folded size of 8.5 x 11 inches and an opened size of 25.5 x 11 inches. We will provide the layout guide, content, and photos for each section. The designer will be responsible for developing a visually appealing design that effectively showcases our services for heavy duty truck repair and for repair parts, ensuring it aligns with our brand guidelines. The project will close within 24 hours. Applicants should have proven experience in graphic design, particularly in creating marketing materials like brochures, proficiency in design software such as Adobe...
I am looking for an AI trainer proficient in Python or java to assist me with my AI project. Key Requirements: - Proficiency in Python: You should be adept in using Python for AI projects. - Machine Learning and Deep Learning Skills: Ideally you will have a solid foundation in machine learning and deep learning concepts and their practical applications. - Communication Skills: A good trainer should be able to explain complex ideas in simple terms. I will require online and offline assistance, so you should be comfortable with both modes of training. The ideal candidate should be able to provide regular updates and feedback on my progress. I am eager to get started and would appreciate if you could commit some time to this project.
...status—active when on, and inactive when off. Solutions utilizing 'keybd_event' and 'SendInput' do not meet the requirements of this project; a deeper, more intrinsic approach is necessary. Conditions: The keyboard emulator must function correctly within the game. The project must be compatible with Windows 10. Candidates should be proficient in at least one of the following programming languages: C++, Python, or Pascal. Payment will be made upon successful demonstration of the emulator working within the game. Note: This project does not involve breaking any game's security measures or installing unsigned drivers. Important Information: Macro usage in the game is permitted and is not considered illegal. Before bidding on the project, please con...
I'm looking for a talented individual who can help me develop an LLM text model which behaves like a virtual girlfriend. This text model must be engaging in intelligent dialogues with emotions and feelings. Here are the primary requirements for this project: - Create an AI-driven text mod...how to configure the backend of the model to limit illegal content or prohibited dialogue contexts. Ideal skills and experience for this job include: - Proven experience in developing AI-driven chatbots or virtual assistants - Proficiency in natural language processing (NLP) and machine learning - Strong understanding of emotional intelligence and how to incorporate it into AI models - Master Python * If you have any questions, you can write to me and coordinate a test. We will also prese...
I need a Python program to parse a JSON file and format it correctly to be JSON compliant. Key Requirements: - Input Data: The input data is in JSON format. - Output Data: The JSON output should be properly formatted and adhere to a specific schema or structure. Skills and Experience Required: - Proficiency in Python programming. - Strong understanding of JSON parsing and formatting. - Experience in adhering to specific JSON schemas or structures. Please let me know your experience in similar projects and any relevant information that would make you a strong candidate for this job. You will pass the name of the input file as an argument and the output file should be the same file name with the .output extension. The input file is attached. Pay attention to the backsla...
We're seeking to hire someone to create a crowd funding page on one of the crowd funding platforms. The goal is to raise funds for a professional 2-5 minute 'sizzle reel of a proposed TV show. We will provide the sponsorship documents from which the content may extrapolated. In other words, you will not have to do a lot of original writing. The ideal freelance should... - Be available to deliver Phase 1) of our project by 5p EST May 24, 2024. - Have experience in creating successful crowdfunding campaigns, specifically for television industry, - Understand the television genres and know how to create a page with the appropriate sensibilities for both the reality tv and fantasy genres. - Understand how to create an page that will have broad audience appeal - Demonstrate s...
You must to be at least 16 years old and live in Latin America or Eastern Europe. ✻ NO EXPERIENCE REQUIRED ✻ You do not need any experience whatsoever, but you must be clever and eager to learn. No. I am *not* being charitable; rather, I am being practical. ✻ PAYING YOU TO LEARN ✻ No. You aren't dreaming. I value intelligence and problem-solving ability over experience. I'd prefer to work with someone who is clever and learns quickly rather than someone experienced but is not very intelligent and/or does not solve problems scientifically. Would I hire an Isaac Newton or an Albert Einstein even if he had no programming experience? Of course I would. ✻ TESTS ✻ You must pass several difficult logic tests to work with me. The first logic test you complete for me will be an un...
Python Script Developer for Photoshop Automation & WordPress/WooCommerce Integration We are seeking a freelance Python developer to create a script that automates Photoshop tasks and integrates with WordPress/WooCommerce for product customization. The script will: Develop a Python script to automate Photoshop operations. Integrate the script with WordPress/WooCommerce to retrieve order details. Automatically open Photoshop and modify PSD files based on customer orders. Update text layers with customer input and save customized templates as JPG/PDF.
Seeking a long-term Python Data Scientist and Generative AI expert Your task is to develop a prototype chatbot that is powered by Generative AI and Large Language Model (LLM) to respond to user queries using domain-specific knowledge and RAG implementation. The project will focus on integrating LLM frameworks, managing data preprocessing, and implementing the chatbot's user interactions. ONLY people who respond to below screening questions will be considered: 1) Did you fine-tune an LLM model using LoRA or QLoRA? If so, which model did you fine-tune, and what was the use case? 2) Do you have a GitHub profile? If so, can you share the link? 3) Are you proficient in English, and what is your hourly rate?
I have a simple python script that interact with an API that takes data from said api and outputs it in a table. The service where I use the API also has a website where I can see in the same table format the exact same data. Pandas know how will help. My problem is that the data from API and from service is mismatching. Your job is too look and identify where the problem is. You will receive both program (simple streamlit app that runs locally) and login details to website to cross check.
I am seeking an experienced engineer to design and implement a two-axis machine control system that is capable of: - Effectively controlling and managing the movements of the system along two axes with a LIMITED RANGE. Your expertise in designing systems with the necessary naviga...knowledge in machine systems control and design. - A thorough understanding of motion control strategies. - A background in data analysis and logs processing. The machine is a Bandsaw to cut small logs into planks. The 2-off, NEMA 23 stepper motor movements are sequential, ie, first one moves then the second stepper moves. The controller is a Raspberry Pi 4, the prefered language is Python. Input to the controller via R Pi 7inch Touchscreen. File is to big to attach I look forward to ...
Description We are seeking an experienced and creative jewelry artist/designer to collaborate with us on creating unique tungsten ring designs for our business. The ideal candidate will have expertise in CA...Experience working with CAD software (e.g., Rhino, Matrix, SolidWorks) and other design tools. *Strong knowledge of materials, and manufacturing techniques relevant to jewelry production. *Creative flair and ability to translate conceptual ideas into tangible design concepts. *Good communication in English, and ability to work collaboratively in a remote way. Additional Information: * This is a freelance position with the potential for ongoing collaboration on multiple design projects. *Remote candidates are welcome . Budget: *Budget is negotiable based on experience and proj...
I'm seeking an expert in Python for a Natural Language Processing project focusing on text classification of social media posts. Key Project Features: - The goal is to build a Python coding notebook that can efficiently classify different types of text within social media posts. This will require a deep understanding of NLP principles and techniques. - The project primarily demands the use of Python for its implementation. Ideal Skills and Experience: - Expertise in Python programming is a must. - A strong background in NLP, particularly in the area of text classification, will be highly beneficial. - Prior experience working with social media text data would be a plus. If you're confident in your Python and NLP skills and have experience...
We are seeking a highly skilled and experienced Data Scraping Spe...and IP blocking. Ensure data scraping processes comply with legal and ethical standards. Troubleshoot and resolve any issues that arise during scraping operations. Collaborate with our development team to integrate scraping solutions seamlessly. Requirements: Proven experience in web scraping and data extraction at scale. Proficiency in programming languages commonly used in web scraping (e.g., Python, Node.js). Experience with cloud services (AWS, GCP, Azure) and deploying scalable scraping solutions. Advanced understanding of web security measures and techniques to bypass them. Strong problem-solving skills and the ability to work independently. Excellent communication skills and the ability to document processe...
I need a highly experienced programming teacher who specializes in both Java and Python. I'm seeking advanced-level guidance, mainly through the following: - One-on-one mentoring: You will provide personalized, in-depth insights catered to my capacities, skills, and learning speed. We will explore challenges and complex concepts together. Patience and exceptional communication are crucial. - Expertise in Java and Python: You must demonstrate a solid understanding and practical application of these languages in the industry. Exit profiles such as the development of complex systems, application in advanced artificial intelligence, or extensive backend management would be ideal. - Advanced Level Programming: I need a tutor who can help me comprehend and implement advan...
I'm in need of a professional and well-rounded computer programmer to build and manage various software applications. Key Tasks: - Develop innovative web and mobile applications - Manage and maintain the software database Ideal Experience and Skills: - Strong familiarity and skill in programming languages (Java, Python or C++) preferred - Previous experience in database management - Proven track record in developing web and mobile applications While skills in Java, Python, and C++ are a bonus, I'm primarily interested in your ability to perform the tasks specified above. Show me what you've got!
I'm in need of an experienced backend developer who can deliver comprehensive solutions for a medium-scale project. The tasks to be handled include: - Database management: You should have sound know...include: - Database management: You should have sound knowledge and experience in managing databases efficiently. - API Integration: Proficiency in successfully integrating APIs is a must. - Server Maintenance: You will also be responsible for maintaining the server to ensure smooth operations. Though the programming languages preferred by me were not specified, having experience in Java, Python, or PHP would be advantageous. This opportunity is best suited for developers with a knack for troubleshooting and those who can guarantee smooth backend functionality even during mo...
We are seeking a skilled freelance writer to create comprehensive documentation and set up demo data for our company's Customer Relationship Management (CRM) processes. The primary responsibility will be to research and document our existing CRM workflows, procedures, and best practices, as well as create sample data for demonstration purposes. Responsibilities: Collaborate with our CRM team to understand our current processes and requirements. Conduct thorough research and gather necessary information. Write detailed, step-by-step instructions and guidelines for various CRM processes. Ensure documentation is easy to understand and follow for both new and experienced users. Organize and structure the content logically for efficient reference. Maintain consistency in writing s...
NOTE: PLEASE MESSAGE ME IF YOU ARE AN EXPERT AND INTERSTED IN THE PROJECT. I'm currently seeking an expert in AI/Machine Learning, particularly in Natural Language Processing (NLP), who can assist in developing a solution using Python, Vector DB, Neo4j and GPT API. The main goal of this project is to create a sophisticated NLP solution that can work with text data such as documents and emails. Key Requirements: - Strong background in AI/Machine Learning, specifically in NLP. - Experience with Python, Vector DB, Neo4j and GPT API. - Ability to deploy the solution on a Local Server. Your tasks will involve: - Developing an AI/Machine Learning solution using the specified tools. - Ensuring the solution is optimized for processing text data. - Deploying the final solut...
Request details FOR EXPERTS WITH EXTENSIVE EXPERIENCE IN THE FIELD ONLY Objective: Scoring Algorithm for evaluating potential investments Data Source: 200+ proprietary historical records with up to 90 parameters Mentoring requested (to be worked with tech project lead and data engineer): • Data-Preprocessing (missing values, normalization, outliers) ...decision trees, random forests, gradient boosting, neural networks) • Details and rationale behind algorithms selection • Hyperparameter tuning and optimization • Cross-validation • Performance metrics (e.g., accuracy, precision, recall, F1 score, ROC-AUC) • Score Calculation and thresholds • Deployment and Monitoring Tools available: • In use: Microsoft Fabric and Excel (VBA) • Potential tool...
buen dia se necesita un un pequeño sistema para llevar a cabo la gestion de un pequeño sistema realizado en paython. dejo archivo adjunto para la explicacion.
I am seeking an experienced engineer to design and implement a two-axis machine control system that is capable of: - Effectively controlling and managing the movements of the system along two axes with a LIMITED RANGE. Your expertise in designing systems with the necessary navig...Comprehensive knowledge in machine systems control and design. - A thorough understanding of motion control strategies. - A background in data analysis and logs processing. The machine is a Bandsaw to cut small logs into planks. The 2-off, NEMA 23 stepper motor movements are sequential, ie, first one moves then the second stepper moves. The controller is a Raspberry Pi 4, the prefered language is Python. Input to the controller via R Pi 7inch Touchscreen. File is to big to attach I look forward to ...
I need a machine learning model developed in Python. This model should be able to evaluate prospective student applications by comparing them to historical data sets. The goal is to classify and sort the new applicants efficiently. Key Requirements: - Develop a classification-based machine learning model in Python - Understand and work with historical data sets to evaluate new student applications - Deploy the model in a web application format for ease of access Ideal Skills and Experience: - Strong background in machine learning and Python - Previous experience in developing classification models - Ability to understand and work with large data sets - Prior experience with deploying machine learning models in web applications
