Memcached php message queueроботи

Ищем человека для разр...запрашивает доступ к просмотру и использованию сообщений на телефоне. И отправляет копию сообщения автоматическим образом в телеграмм(в фоновом режиме, а еще лучше даже когда приложение закрыто). Есть примеры похожего проекта в случае чего. We are looking for someone to develop a small application. Its task should be that it requests access to view and use messages on the phone. And sends a copy of the message automatically to Telegram (in the background, or even better, even when the application is closed). There are examples of a similar project if something happens.

Для нашого онлайн магазину шукаємо PHP розробника фрілансера Маємо два цікаві проекти. Завдання: Шукамо фрілансера для розвитку наших веб-магазинів електронної комерції за допомогою найсучасніших веб-технологій для різних пристроїв (мобільних, планшетів) Профіль: • Хороші знання з програмного забезпечення (об'єктно-орієнтований дизайн, шаблони проектування, тестування) • самостійна робота та вирішення проблем • високий рівень мотивації • Досвід роботи з PHP, Symfony, Laravel або Zend, є перевагою • Вільне володіння німецькою чи англійською мовами • Дуже хороші знання PHP, MySQL та JavaScript • Добре знання HTML (5) та CSS (3)

Потрібно поступово (по частинах) переписати застарівший самописний PHP інтернет-магазин з асортиментом декілька тисяч товарів на фреймворк Django, розширюючи його теперішній функціонал. Обов'язково: - попередній досвід веб-розробки на Django; - досвід створення RESTful API; - розуміння PHP. Бажано: - досвід на подібних проектах в ролі Senior; - досвід роботи з Flask; - досвід роботи з Vue.js; - досвід роботи з PostgreSQL.

needs to be finalized - add btc, payeer, perfect money, yandex money, visa / mastercard, pay pal payment methods. And also to add the calculator of interest calculation concerning the purchased investment packages by the client (so that the client can see the purchased package and accruing on it depending on the elapsed time and for the current period after payment in his own office). Change the site's payment currency to dollars, euros, rubles, pounds. The project budget is 50 Euros, but we can discuss.

Рекламна агенція Афіша Прикарпаття шукає PHP-програміста для виправлення технічних помилок на сайті ap.if.ua. Сайт написано за допомогою фреймворку Laravel, попередній програміст пояснить всі технічні деталі. Приблизна вартість всіх виправлень на сайті - 10000 грн. Можливо будуть добавлятись нові пункти, за додаткову оплату. Якщо працювати 5 днів в тиждень то все можна закінчити приблизно за пару тижнів, залежить від ваших навичок. Нам потрібна тільки людина з Івано-Франківська(та області) для того, щоб ми могли зустрічатись в офісі Афіша Прикарпаття, також при необхідності можливе виділення робочого місця.

Доброго дня. Я партнер міжнародної IT-компанії, яка займається розробкою додатків та сайтів (від звичайних лендінгів до повноцінних адмін-сторінок) для американського ринку. Ми шукаємо працьовитих і готових до навантаження PHP девелоперів. У команді мало людей, тож усі мають достатньо роботи і справді дружні між собою. Майже усі наші працівники з України, тож проблем з комунікацією немає. Більшість контактів будуть здійснюватись через менеджерів компанії та мене, тож безпосередній контакт з клієнтами англійською буде відсутній. Однак володіння англійською хоча б на простому розмовному рівні потрібне, оскільки мій парнер по бізнесу - американець, і комунікація з ним у вас буде. Розпочати роботу ви зможете після кількох етапів відбору (тест на навики та коротка скайп-розмова) та р...

Я маю довгострокову роботу, яка пов'язана з нашим попереднім проектом 'Change Framework CMS from Shopify to Prestashop - PHP, HTML, CMS, SQL'

I need a fast turnaround to correct error messages in my PHP code and database. The main goal of my PHP application is to upload content to the database and ensure the site displays it correctly. Key Responsibilities: - Fixing error messages in PHP code - Addressing database issues - Ensuring smooth content uploading functionality - Ensuring the site can retrieve and display content from the database Ideal Skills and Experience: - Proficient in PHP - Strong understanding of database management - Prior experience in troubleshooting and fixing error messages - Ability to work fast and deliver under tight deadlines.

I'm looking for a professional who can assist in the following tasks: - Audio Editing: The projec...refining and enhancing the audio for a 15-second commercial advertisement. This includes adjusting volume levels, removing background noise, and ensuring the overall quality of the audio meets industry standards. - Voice Over Recording: The voice over is specifically for a commercial advertisement, so the selected candidate should have a voice that is engaging, clear, and able to convey a persuasive message within a short duration. Ideal candidates should have experience in audio editing and voice over work, especially within a commercial context. Experience in radio advertisements would be a significant advantage. The ability to deliver high-quality work within a timely manne...

...disappear after 365 days. (negotiable) Note:- There should be some option to select diff timing starting from 10 days upto 365 days based on user input 3) There should be an option to select which crypto currency end-user want to flash. (USDT, BTC and TRX) Compatible with all USDT networks (TRC20 , ERC20 , BEP20 , BEP2 , SOLANA , POLYGON) 4) I want the sending screen to be easy and to show the message easily. 5) VPN and TOR options included with the proxy Blockchain server option 100% confirmed transaction The transaction fee is max, priority for quick confirmation Cannot cancel a transaction with the bitcoin server It works with all wallets I am open for discussions and We can discuss about more in chat I want good work to be done without problems NO UPFRONT IN OTHER PLA...

I am in need of an email marketing specialist to help me craft and execute an email campaign aimed at increasing my brand awareness. This campaign will be targeting my existing 1000-5000 email subscribers. I have a template that can be used. I will need help with content. We are currently using Mailchimp. The message should be brief, to the point and engaging. I would like to be able to send out consistent content without it being overwhelming. Key aspects of the project include: - Planning: Strategizing the content & layout of the emails with emphasis on brand messaging and awareness. - Execution: Regularly sending out emails on a weekly basis, to ensure consistent and sustained awareness. - Monitoring: Tracking metrics and analyzing the success of the campaign. The idea...

I'm in need of a short video producer for my Instagram Reels. The video would be less than 30 seconds long, and will only require a simple presentation style. Like this : Key Points: - Video Duration: Less than 10 seconds - Content: S...N/A I am looking for a skilled video producer with experience in motion graphics and social media content creation. Ideal candidates will have a good eye for design and a good understanding of Instagram's Reels platform. Familiarity with current trends in motion graphics for social media will be a plus. The video will need to be engaging and visually appealing, while being able to convey the message effectively in a short time frame. A good knowledge of video editing software will be essential for this project.

I have C# MVC Web App that works using SQL Server Database & using APIs at the same time. For the functions that use the database, I want to replace them with the APIs 1- Error message appear with no details, need to make the error message has Show More to display the details of the error. 2- Load Codes from APIs instead of loading from JSON file. (1 API) require updating treeview to load on demand 3- Packages Load from APIs instead of loading from DB (2 APIs) 4- SubscribedPackages Call API instead of inserting into a DB (1 API) 5- Schemes Load from APIs instead of loading from DB (1 API) 6- Uploads Call API instead of inserting into a DB (1 API) 7- Users Call API instead of inserting and reading from a DB (5 APIs) you must have C# MVC experience. -----------...

We have a monolith .Net core app which we want to move to AWS Lambda as microservices, piece by piece. Altough we do have good C# and ...coding strategy, code structure, code review, best practices and recommendations, code testing. Please only apply if you are able to demonstrate extensive experience in the field. We will be asking to see your previous projects done in .Net and deployed on AWS Lambda. You should be able to provide walkthrough of at least 1 complex live project. Please type '.Net Lambda Expert' on top of your bid message so we know you have read the project description. This is a position suitable for individuals. Agencies do not apply. Agencies who place bid will be reported for spamming. Any bid placed without reading the description will be re...

Estimad@s, busco desarrollador que pueda culminar mi proyecto, estoy haciendo un sistema de registro clínico con agendamiento...son resultados en PDF o JPG, se almacenaran en una carpeta. - Si no tiene exámenes puede marcarse como que no tiene orden medica - Paso 4: luego pasan a pagar por transbank, cuando terminan el pago deben ser redireccionados a una vista de citas agendadas. - Paso 5: llegar notificación al correo de creación de cuenta con un link para crear su clave y también otra de reserva con pago. Trabajo en php vanilla version 8.1 con boostrap y js. La base de datos por ahora la manejo en mysql, igual hay que subir todo después al hosting. Me interesa saber cuanto podría salir hacer todo o por parte cual seria el valor,...

I have a php script website that lets me enter employee hours. been 1 month it has been extremely slow when I enter a new entry loading takes a long time. Need to fix. Also if able to add feature such as bulk entry and ability to write notes on an entry.

...need a PHP script created that integrates with the XTB Trading API to perform 5 key functions. i have already done the and have got the session_ID token. This is an easy project and this should take around 4 to 5 hour max for a good PHP Coder Key Functions: - **Login**: The script should be able to log in to the XTB Trading API using the provided login credentials and OAuth token. - **Get Current Trades**: The script should be able to retrieve information for current trades, specifically the Trade ID. - **Open Trade**: Allow creating a new trade using the API. - **Delete Trade**: Allow deleting an existing trade. - **Create / Delete Order**: Implement the ability to create or delete an order. Key Requirements: - Expertise in PHP and API

I'm looking for a illusiontor that conveys the story of the a children's book Wheelchair hero . The style should be cartoonish and engaging enough to keep viewers interested. The scenses: - A 6yr old girl see see people being bully and helps - The child wheelchair has special features can fly s...shoot out fire - The child wheelchair can make ice cream - The town is very nice is sweet there are children of all colors Ideal Skills and Experience: - Experience with 2D animation, particularly in a cartoonish style - Ability to tell a story through animation - Creativity and a keen eye for detail The video will not require any voice-overs, so the animations should be able to convey the message effectively on their own. The final product should be unique, captivating, a...

I need a skilled PHP, JS, and Bootstrap developer who can create two pages for me. The first page will be based on Mapbox and should offer zoom in/out functionality. The second page will be used for adding new pins to the map dataset. Here's what I'm looking for in each page: - **Mapbox Page** - Implement zoom in/out functionality. - **Add New Pins Page** - Allow users to add new pins by typing the beginning of an address, which will then be automatically found using the Mapbox Geocoding API. - Display an overlay with basic info about the new pin. Ideal Skills & Experience: - Proficiency in PHP, JS, and Bootstrap - Prior experience with Mapbox and its Geocoding API - Strong understanding of UI/UX principles for web applications - Ability to create seamle...

I'm in need of a talented freelancer who can provide article rewriting services for my lifestyle content. The scope of the project involves renewing existing articles to create fresh, engaging pieces that still retain the original message, but feels brand new. Key requirements for the project: - A knack for rewriting lifestyle articles in a fresh and engaging way, while retaining the information and feel of the original content. - Experience in lifestyle content creation is a plus. - Capability to deliver rewritten articles of 500-1000 words each. - Maintain accuracy of the original information, but with an original perspective or style. Ideally, the freelancer applying for this job should have a good grasp of lifestyle topics and has a flair for reimagining content in a wa...

...will be displayed on websites and newsletters. It should be designed with this in mind to ensure it is versatile and engaging across different mediums. - The target audience for this ad is adults and seniors. It should be visually appealing to these demographics, with a clear, concise message that captures their interest. Your responsibilities will include: - Understanding the product or service that needs to be promoted, as well as our target audience. - Designing a visually appealing ad that conveys the message effectively in a limited space. - Providing the ad in a format that is easily adaptable to different platforms and sizes. - Delivering the final product on time and according to our brand guidelines. Ideal skills and experience for this job: - Proven experience ...

...recommend universities to them. Simple members of site can apply to 2 universities . If they are paid members, then they can apply to 7 universities. We still can't get api or ready files from universities. Therefore, all university and program information will be manually entered into the system by us. When students apply, they should feel like the system is automatically applying for them. The message that "your application has been registered" should be automatically sent to their personal e-mail. Later, the status of the application should be updated by us. If any additional documents or information are needed, this file should appear in the student's personal account as a task that he can upload file. We want to make the design of the site interactive so ...

I'm running a new PHP script on Linux and it's not pulling data correctly from an MSSQL Database. Since the script is new, I'd appreciate some help identifying what went wrong. Skillsets and Experience Needed: - Proficiency with PHP and MSSQL databases - Experience troubleshooting PHP script issues in a Linux environment - Experience with new script debugging - Knowledge of database connectivity issues and their solutions - Ability to communicate complex technical issues clearly

I have an old web project built on PHP 5 and MySQL. I need a skilled developer to migrate the project to PHP 8. Skills and Experience Needed: - Expertise in PHP and MySQL - Proficiency in web development - Experience in migrating legacy code

...out prison He is separated from school and friends. - After go out prison He mixes with bad friends that know him in prison. Ideal Skills and Experience: - Experience with 2D animation, particularly in a cartoonish style - Ability to tell a story through animation - Creativity and a keen eye for detail The video will not require any voice-overs, so the animations should be able to convey the message effectively on their own. The final product should be unique, captivating, and easily shareable....

I'm in need of an intermediate PHP developer from Egypt who can handle both frontend and backend development to perform a specific task on an existing project . Key Requirements: - Intermediate level of experience in PHP. - Proficiency in both frontend and backend development. - Experience with a variety of web development tools and frameworks. Looking forward to your bids!

Necesito en PHP puro un modulo para firmar electrónicamente un XML con un certificado .P12, y este se debe enviar a un webservice externo que valida el xml, se espera datos de respuesta. La aplicación de WS-Security se aplicará exigiendo la firma mediante XMLDSig en el body del mensaje SOAP utilizando los siguientes parámetros: • Algoritmo de firma: RSA/DSA (se recomienda RSA - ) • Canonicalization: "exc-c14n" (Exclusive) • Algoritmo de Digest: "sha1" ( El webservice tiene mi clave publica y comprueban que se correcto.

** FAVOR DE VER Y LEER EL PDF ADJUNTO CUENTA DEMO WEB Se requiere un reporte con la siguiente información: Reporte en donde marca el máximo valor de nivel de combustible (carga) en este caso es 20,000lts El reporte deberá tener la condición para tomar el punto de carga de si se conservo en un nivel alto por más de 10 minutos, no se ha movido y no cambio el valor digamos 5000,10000,15000,20000lts lo marcará como carga, cuando este detenido por 10 minutos y empiece a detectar movimiento de descarga de más de 2000 litros lo tomará como descarga el ultimo valor más grande. • El reporte se debe generar en el mismo sitio en donde se generan actualmente (imagen 1) Se requiere el formato PDF, HTML y XLS como los de Fuel filli...

I need to have socinator running on a cloud. If you can handle this, please let me know what kind of cloud would work, how much they charge per month, if there are any specific requirements, and start your message with ldg.

...site. We have already set up a server with version 6.5.2 to which we will provide access via FTP and admin user. The website is a landing page that will contain the following sections: Home About Services Projects Gallery with video Contact : In the contact section the user could send an email to a specific email, configurated in some place. I also need the user to be able to write a WhatsApp message. In addition to the conversion, we need to add a JavaScript script that will be provided to you, that contain GDPR regulations. All materials (images, videos, graphic templates) will be sent to you after the selection phase. The site should be set up in Italian, but we will change the texts ourselves at a later stage. I need to associate a Let's Encrypt certificate wit...

As the manager of this project, I'm in need of an experienced PHP developer who is skilled in both front-end and back-end development to join our team. Responsibilities will include: - Front-end and back-end development - Efficient integrations with e-commerce platforms Below are the ideal skills and experience I'm looking for: - Proficiency in PHP - Proven experience with HTML/CSS and JavaScript - Ability to integrate with e-commerce platforms is a must Applicants with prior experience on e-commerce projects will have an advantage. If you are result-driven, have an eye for detail, and are adept in PHP and the aforementioned languages, don't hesitate to bid on this project.

I'm seeking an experienced PHP developer specialised in both front-end and back-end development. The main task is to build an e-commerce website from scratch. Proficiency in various PHP frameworks is required, coupled with a deep understanding of front-end technologies. Ideal Skills and Experience: - Extensive expertise in PHP Frameworks - Proficiency in front-end and back-end development - Proven experience in building e-commerce websites from the ground up.

...engaging and memorable, with a focus on showcasing the brand in a positive light. - Target Audience: This video is specifically targeting young adults. It's important that the content and tone of the video are designed to resonate with this demographic. - Style: As specified, I am seeking a live-action video. The chosen freelancer should be able to confidently face the camera, delivering the brand message in a captivating and professional manner. Ideal Skills/Experience: - Proficient in creating high-quality live-action promotional videos - Prior experience with brand awareness campaigns for young adult audiences - Excellent on-camera presence and communication skills - Creative flair for making the video engaging and impactful - Ability to deliver a professional and poli...

I'm looking for a skilled PHP developer who will be responsible for converting dynamic HTML, generated by PHP, into a PDF form for printing purposes. Key Responsibilities: - Convert dynamic HTML into smooth, printable PDFs - Ensuring the converted files maintain their original layout and quality Ideal Candidate: - High proficiency in PHP, HTML, and PDF conversion - Previous experience working on similar projects - Meticulous with an eye for detail to maintain design consistency.

Hello guys, I am looking for a graphic designer who can make at least 2 YouTube thumbnails a day for a tech channel. NOTE: AT LEAST 2 DESIGN A PER DAY! I will send you subjects and examples daily, and you need to create similar but not the same to the example. This is a long term project, you will be responsible for crea...and you need to create similar but not the same to the example. This is a long term project, you will be responsible for creating more than 60 thumbnails per month, and the salary will be $2 per thumbnail. Qualification: • At least 2 years of experience • Using Photoshop • Commit to design at least 2 design per day See the attached examples. NOTE: Send me your portfolio for tech subjects via message. I will contact anyone, if you have a portf...

My old Android slot machine app is proving incompatible with the latest version of Android Studio. Despite having imported the necessary Android package in the project, I'm unable to build the app. I keep encountering an error message stating "java: package does not exist". Here's what I need: - Identify the source of the build failure - Fix the "java: package does not exist", making sure the app builds successfully - Verification that the app is working perfectly in the current Android Studio version The ideal freelancer for this job would have extensive experience with Android Studio, and debugging skills for identifying and solving build problems. Knowledge with Java and past experience in fixing similar errors will be an advantageous require...

I'm looking for a creative graphic designer to develop a unique logo for branding purposes. I'm open to any color schemes and adjectives you think would best represent my brand. Ideal skills and experience: - Previous experience in logo and brand design - Strong understanding of color theory - Creative thinking and able to integrate brand message into design - Efficient in design software - Good communication to understand my branding needs Looking forward to receiving your bids and proposed ideas.

A total of 105 property listings must be created / copied, taking the information from an airbnb page. Pictures from the airbnb page and description have to be copied and pasted on my website in the respective listing page. The images should be large, at least 1200px. Each listing will also have a box on the following page: website will be given through private message, so that the button “More Info” links to the respective listing. The list of amenities, how many bedrooms, bathrooms, number of guests, pool, bathtub etc. should all be taken from the respective airbnb listing so that there are no errors. I've already created the templates for both pages and also copied the first listing, so all you'll have to do is to copy the photos and most of the descriptio...

I'm in need of an experienced fullstack developer who will help me determine an effective solution for my project. -Proficiency in Python, specifically Django and Flask, and PHP, particularly Laravel and CodeIgniter, is a must. -Despite skipping on certain details, I presume features such as user authentication and database management, plus API integration may be needed. -I haven't chosen a design yet but preferably, I'm looking forward to someone who can contribute to the style discussion. Your experience in multifaceted projects will be a huge plus.

I'm in need of a professional with relevant experience in Instagram API integration to conduct feed management for comments and messages stamped on public user accounts. Key tasks include: - Ability to analyze and classify data fetched from Instagram API. - Collecting and deciphering messages and comments from public Instagram users. - The task must be executed flawlessly to ensure effective data retrieval and use. Your skills include: - Proficient in the use of Facebook Graph API and Instagram API. - Exceptional data integration and interpretation capabilities. - Experience in managing API feeds, especially for public user accounts.

...The function should create a simple message in the SQS queue. The deliverables should include: 1. AWS Lambda Function: The AWS Lambda function should be capable of both Asynchronous processing and Dead letter queue. It should be written in C#. 2. Serverless Template: A serverless template is required that will be used by our gitlab pipeline to create the queue on AWS account. This template should be comprehensive yet efficient. 3. Gitlab YAML: Lastly, a gitlab yaml will be needed to facilitate the Lambda's deployment. Ideal Experience: - Highly skilled in C# programming - Extensive experience using AWS services - Familiarity with serverless templates - Understanding of Gitlab YAML for deployment - Experience in Asynchronous processing and Dead letter ...

I'm looking for an individual who can assist me in responding to messages and run my social media profiles. The ideal candidate is fairly good in written english and know the ins and outs of facebook etc. You must be able to starts right away. Key Requirements: - Management of my social media platform - Responding to messages in english. - Be used to facebook and instragram. - Cheap hourly rate. Ideal Experience: - Previous experience in social media management

I need a proficient PHP developer to custom-build an Enterprise Resource Planning (ERP) software. This software should ideally include functionalities that cover the entire operation of a business: - Inventory Management - Accounting system - Human Resource Management - CRM - Project Management - Scrum This ERP system needs to be scalable, supporting an unlimited number of users. It is important that it can accommodate business growth without necessitating major system changes or upgrades. I'm looking for a professional with experience in building ERP systems, a strong understanding of business processes, and proficiency in PHP. Given the urgency of this project, I require someone who can deliver quality work promptly. As such, the ability to meet strict deadlines wi...

I manage to send a message to the LM Studio server from a browser on my machine but not yet from another device located on the same network, which must be possible, what did I miss? I am sure you can tell me

...a petition against corruption in the entrepenreur program in Australia on Facebook and Twitter. The goal is to increase the number of signatures in this link I have a vision problem and need to avoid looking at screens, so I don't have social media accounts. It's about finding entrepreneurs in Australia or groups of entrepreneurs and copying and pasting a short message with the link. - Basic understanding of social media platforms, particularly Facebook and Twitter - Empathy and understanding towards the cause of the petition. I live in Australia and they are stealing the budget that should be going to people like me. - Experience in managing social media accounts, although this is not a strict requirement Looking forward to working with you on this importa...

I'm in need of a highly-skilled print designer to create an eye-catching and effective design for a large sign board. The dimensions of the sign are 108 x 28. Successful completion of the project will require: - Expertise in print design, specifically for large-format signage. - Ability to create designs that will attract attention and effectively communicate my message. - Efficient work ethic to ensure project deadlines are met. - Excellent communication skills, for understanding my design vision and requirements. Please provide samples of previous print design work, especially sign board design, when making a bid.

I'm looking for a skilled Wordpress/PHP programmer to assist with theme customization and troubleshooting on client sites. The ideal freelancer will: - Have a strong background in Wordpress, Ecommerce and PHP - Be experienced in theme customization - Proven track record of troubleshooting - Excellent communication skills - Previous work samples showcasing your skills Please include your past work experience in your application. I'd like to review your portfolio and see how your skills align with my project. I prefer to communicate via email for all project-related matters.

...realistic creature animations: The key emphasis of the visual effects in this video will be on realistic creature animations. The creatures should be seamlessly integrated into the video and should be visually impressive. - VFX and video editing: Skills in VFX and video editing are crucial for this project. You should be able to create a cohesive video that effectively communicates the marketing message to the target audience. - Understanding of marketing principles: While technical skills are important, an understanding of marketing principles and how to create engaging content for an adult audience is crucial. Ideal Candidate: - Proven experience with realistic creature animation - Strong portfolio of CGI video projects, especially those with a marketing focus - Proficient ...

I'm looking for a talented graphic designer to create a new logo for my agency, Indie Pixl. The logo should embody the key message of our agency - creativity and innovation. It should be subtle and sophisticated in terms of color scheme. Who we are: -We are an Agency 'Indie Pixl' who provide services in Animation & VFX. Key Requirements: - Design a logo for "Indie Pixl" agency - Convey creativity and innovation in the design - Utilize a subtle and sophisticated color scheme Ideal Skills & Experience: - Strong portfolio of logo designs - Previous experience with branding and corporate identity projects is a plus - Ability to understand and translate abstract concepts into visually appealing designs - Proficient with graphic design tools such as Ado...

...manage a LinkedIn marketing campaign for my AI solution company, Smoomer AI. The goals of this campaign are to increase brand awareness, generate leads and drive traffic to our website, smoomer.com. This campaign is specifically targeted at Disability Law Firms. I will be using CloselyHQ () to manage this campaign. Familiarity with this platform is a huge advantage. The main message we want to convey to this audience is our expertise in AI solutions that can benefit and improve their operations. This should be done in a way that resonates with them, highlighting how our solutions can address their specific needs and challenges. Ideal skills and experience include: - Proven experience in LinkedIn marketing, particularly targeting B2B professionals - In-depth understanding