Harley evolution engine rebuild işler

...Webpack & Babel: Kod derleme ve paketleme süreçlerinde tecrübe ? Version Control: Git ile etkili sürüm kontrolü ? Cross-Browser Compatibility: Farklı tarayıcılarda uyumluluk sorunlarını çözme kapasitesi ? Backend (Tercih Sebebi): ?️ Laravel: Laravel framework bilgisi ( Min. 5YIL ) ? Veritabanı : MySQL, PostgreSQL ve MongoDB veritabanı yönetim sistemine ,Elasticsearch hakimiyet ✒️ Blade Template Engine: Blade şablon motoruna aşinalık. ? PHP: Önceki projelerde aktif PHP deneyimi ✨ Genel Yetenekler: ? Problem Çözme: Frontend ve Backend'de hata teşhis ve çözme deneyimi. ? Beceriklilik: Yaratıcı ve etkili problem çözme yeteneği. ?️ İletişim: Takım içi ve dışı etkili iletişim yet...

Merhaba, Uzun vadeli bir proje için bir oyun demosunu bitirmemize yardımcı olacak bir Unreal Engine 5 geliştiricisi arıyoruz. Özellikle Türkiye'deki geliştiricileri arıyoruz. Türkiye'de yaşamıyorsanız, lütfen başvuru yapmayın, aksi takdirde başvurularınız dikkate alınmayacaktır... İhtiyacımız olan: - Al için Blueprints'te programlama yapabilen biri (karakter hareketi, mermiler ve atmosfer programlama) - Blueprints hakkında iyi bir tecrübeye sahip olması. (şu anda C++ gerekli değildir) - Kullanıcı arayüzünü programlayabilen biri. - Türkiye'de yaşıyor olmalısınız. Proje Detayı: Silahlı bir 2D platform oyunu. Megaman gibi bir şey. Biz konuşurken sanat üzerinde çalışılıyor ve her şeyi Unreal ...

...analysis of my website's current SEO status - Implement on-page and off-page optimization techniques to improve website ranking - Conduct keyword research and optimize website content accordingly - Collaborate with the content team to create SEO-friendly content - Monitor website traffic and provide recommendations for improvement Goals: - Increase website traffic - Improve website ranking on search engine results pages Current status of website's SEO: - Fully optimized but needs improvement Skills and experience required: - Strong understanding of SEO techniques and best practices - Experience with keyword research and optimization - Familiarity with SEO tools and analytics platforms - Excellent analytical and problem-solving skills - Knowledge of social media manag...

...arayüzünü tasarlamak ve çok oyunculu işlevselliği uygulamak dahil olmak üzere oyunu sıfırdan tasarlamayı ve geliştirmeyi içerecektir. Geliştirici ayrıca, oyunun benim özel gereksinimlerimi ve vizyonumu karşıladığından emin olmak için benimle yakın çalışmaya istekli olmalıdır. I am looking for a developer to create a web-based multiplayer strategy game in 2D. The game will require the use of a custom engine, and the target platform is web browsers. Ideal Skills and Experience: - Experience creating web-based games using custom engines - Strong understanding of multiplayer functionality - Proficiency in web development languages such as HTML5, CSS, and JavaScript - Previous experience developing strategy games - Knowledge o...

unreal engine içerisinde ileri düzey blueprint bilgisi olan birisini aramaktayız. Elimizde 1 adet animasyon paketi 1 adet combat sistem paketi ve 1 adet envanter sistemi paketi var. Bunların hepsini birleştirebielcek birisini arıyoruz.

I need 3D vehicle models with PBR material and maps to be used for games. Truck, Bus, Minibus Etc. Photos of the vehicles will be given and modeled on it. PBR textures will be made in substance painter. Max poly will be 50k It will have a smooth topology Coatings and PBR maps will be made It will be compatible with the game engine Detailed explanation will be made

Su web sayfasindaki C++ ile yazimis code ile ilgili aciklamalar surdan bulunabilir: Fakat, bizim ihtiyacimiz olan bu code'un C# ve Windows Desktop Application da olmasi. Code'un buyuk ve her turlu dosyayi transfer edebilmesi gerekiyor.

Tamamlanmış bir projede revizyonlarımız var.

Ekibimize Unreal Engine programcisi arıyoruz. Uzun sure unreal uzerinde calismis ve portflyo gösterebilecek adaylar,lutfen bize mesaj atiniz.

Birkaç arkadaş başladığımız projemizde artık aramıza yeni insanlar dahil etmemiz gerektiğine karar verdik ve projemizde bizimle birlikte çalışacak kişiler aramaya başladık aradığımız nitelikler : * Web Tasarımcı * Solidity Yazılımcısı * Akıllı sözleşmeler * Unreal Engine Programcısı (C++) * Oyun Tasarımcısı Oluşturacağımız proje bir kart oyunu ile kripto para ekosistemini NFT ler aracılığı ile birleştirmek. Bunun için yukarıda aradığımız niteliklere sahip iş arkadaşları arıyoruz. Projemiz dünya çapında bir proje olmaya aday eğer ki gerekli yatırım ve özveriyi verebilirsek bu yüzden böyle bir projede ilk çalışanlarla birlikte olmak oldukça heyecan verici.

21 Google olmak üzere 31 Sertifikaya Sahibim. Sitesinin kurucusuyum. Uluslarası şirketler dahil olmak üzere SEO uzmanı ve SEO danışmanlığı hizmetleri sundum. Site içi ve site dışı Search Engine Optimization (SEO) başlığı altındaki tüm konuları başkasına yaptırmak yerine siz kendiniz yapmak istermisiniz? böylece bir defa ödeme yapıp tüm görevleri siz yerine getirebilirsiniz. Kendi sitenize SEO çalışması yapmayı öğrenecek ve istediğiniz kelimelerde yükselmeye başladığınızı fark edeceksiniz. Siz yapmak istemeseniz bile satın alacağınız işin kalitesini ölçmek ve hizmet aldığınız firmayı değerlendirmek için neler gerektiğini öğrenebilirsiniz. Online eğitim süresi : 4 saattir. Google meet üz...

Hello, I'm looking for an integrated engine for the video conference program. The project will be received with source codes and engine information. I also want time and budget information for each version of the program under consideration. If anyone is interested, please contact me. Thanks

bir DATALİFE ENGİNE site siteye istediğim gibi bir döviz kuru ekleme yapamıyorum.Öncelikle belirteğim döviz kuru azerbaycan döviz kuru olmalı.Ücretli ne kadar fiyata yapa bilecek birileri var ise iletişime geçmeleri ricada bulunur.

Merhaba Sepehr T., hocam python google app engine projesi olarak image storage service assignmentim var. deadline ım çok yakın ve bütçem 100 euro ilgilenirsen lütfen dönüş yap.

Merhaba osmanaydin, hocam benim html sayfaları üzerinden datayı alıp metin madenciliği olarak işlemem gereken bir assignmentim var. ilgilenirsen lütfen beni bilgilendir. ayrıca python google app engine içeren bir ödevim daha var . ücret için elimden gelen bu ne yazıkki.(tek assignment için)

PROJECT DETAILS ARE IN ENGLISH: view

PROJE AYRINTILARI INGILIZCE DILINDE: -> okuyunuz

Merhaba Enes Senden Yapmak İstediğim Şey Benim Bilgisayarım Bozuldu Ve İşime Devam Edemedim Neyse Benim Elimde Şu Anda Unreal Engine 4 Motoruna Uygun Sahneler Var Senden İstediğim Bu Sahneleri Sadece 1 Sahnede Birleştirmek. Yani Siz Hiç Bir Şey İlave Etmeyeceksin Sadece Benim Sahnelerimi Tek Sahnede Birlestiriceksiniz. Ücrete Geldikte Ise Az Ola Bilir Ama İnşallah Iyi Olursa Devamı Olacakdir Ve Projemde Senin İsmini De Verecegim . Sana Gerek Olan Şey Aslında Level Design. Teşekkürler Seni Bekleyeceğim.

Unreal Engine 4'te. Birbirinden ayrı haritalara sahibim ve bu haritaları birleştirmek ücret düşük olabilir, ancak gelecekte daha fazla iş olacağını unutmayın.

Bazı karakterlerin 3D Modellenmesi lazım .Hangi motor olduğu pek önemli değil .Ama uygun fiyatlı ve orjinal tasarıma olabidiğince yakın olmalı .Eğer fikirle ilgili anlaşılırsa diğer karakterler içinde yardım istenecektir. Some characters need to be modeled in 3D. It doesn't matter which engine it is. But it should be affordable and as close as possible to the original design. If the idea is understood, help will be asked in the other characters. [Removed for encouraging offsite communication which is against our Terms and Conditions -Section 13:Communication With Other Users] [Removed for encouraging offsite communication which is against our Terms and Conditions -Section 13:Communication With Other Users]

Merhaba, Hazır bir scripti Buildbox3 programıyla düzenlemesi yapılacak ve web kontrol paneli entegre edilecek. scripti aşağıda paylaşıyorum, Detaylı özellikler için iletişim kurabilirsiniz.

English We have complated game engine and the missing part is a nice graphics for our mobile game. Ships traffic control on boshporus, istanbul. All graphics will be bird eye view type. No 3D or 2D dimensions! ( I addes some samples at the attached files ) 1- Base graphic for all around the boshporus from marmara sea entry to black see entry and including golden horn. 2- Harbours for passangers and houses, roads ( focus on sea but we should also show players to some staff on lands as well ) 3- Famous landmarks. ( there are plenty of them around boshborus ) 4- Ships ( containers, carriers, passanger ship and ferry ) for user control. 5- Clouds, birds ( seagul ) and V shape immigrant birds and plane also Game includes levels and each level will focus on differen...

Mobilya için yazılım üretilecek, Tasarımlar ve çizimler 3d ortamında hazır, kodlama yazılımcı arkadaşa kalır. Unreal engine tercih edilir. Unity da olabilir.

wordpress woocommerce, social deal engine gibi eklentileri kurup tema düzenlemesi yapılacak

Kelime anlamıyla Tavsiye motoru olan recommendation engine projesinin temel amacı; bütün e-ticaret şirketlerinin sahip oldukları web sitelerinde kullanılabilecek ve temel olarak müşteri davranışlarına göre potansiyel müşterilere en uygun ürünleri widgetlar,display bannerlar ve e-mailing kanallarıyla müşteriye sunan bir sistem yaratmaktadır. Bu sistem sayesinde artan dönüşüm oranları e-ticaret sitelerinin ciro ve karlılıklarını arttıracak, dijital pazarlama maliyetlerini düşürecek, dip toplamda ise müşterilere öncelikle interaktif ve gelişkin bir yapıda ise kişiselleştirilmiş bir alışveriş deneyimi sunacaktır.

...that can be imaged . Css Ile should be created a simple design using HTML 5, Standings, Live Scores , İddaa bet Looking For Guest Authors , Programs, of the details of the Fulltime Live center live match broadcast, Highlights , Lineups , date, time, Gols , the match videos , and so on. As will be drawn on the link , all live, finished , done in the Departments will be highlighted in the search engine will be prepared in the global aspx page that , in addition Ideas page , Match Results Click. Example adding Web service access other sites able to show results in your own page , the lease payments to be made in understanding specialist . The projects ensure Must be able to develop the auction , Together With the delivery of the source code , a detailed description is added to the

Is aciklamasi: Su anda Turkiye'de VPS uzerinde bulunan sitelerinin dosyalarini ve MySQL veritabanlarini GOOGLE CLOUD PLATFORM'a tasimak ve sitelerin GOOGLE C...ayarlari gerceklestirmek. Tasinacak siteler: PHP tabanli siteler (4) + Wordpress siteler (4) ONEMLI NOT : Bu islemi yapacak uzmanin GOOGLE CLOUD PLATFORM hakkinda tecrube sahibi olmasi gerekiyor. Siteleri inceleyip Google'a odenecek tahmini bir aylik gider bilgisi verebilmesi gerekiyor. MAKSIMUM BUTCE : 100 Turk Lirası ( 50 USD ) KAYNAKLAR : 1- Google Compute Engine 2- Google Cloud SQL 3- Google Cloud Storage Tum kaynaklar icin :

I want to make real estate search engine with .NET MVC 4 or 5, i need admin panel, front-end panel, Türkçe: .Net MVC 4 ya da 5 ile emlak arama motoru yaptırmak istiyoruz. Admin panel, ön taraf, ilan sayfası, ilan detay sayfaları, il ilçe kombinasyonu Tasarım yoktur.

...detayına kadar. Bazı noktalarda online olarak veri çekmek gerekecek. Aynı zamanda bu liste üzerinden satışta yapmayı planlıyorum. Bir nevi akıllı liste olacak. Müşteriler liste üzerinden film seçebilecekler. Kafamdakinin benzer bir örneğini bir yer yaptı. Onunda adresini vereyim orayı incelerseniz nasıl bir şey istediğimi biraz olsun anlamış olursunuz sanırım. benzer liste: Bu yukarıdaki linkteki liste sanırım Excel 2013 te yapılmış bilginiz olsun. Bazı tablo dilimleyicilerini kullanmışlar çünkü. Benim istediğim anafikirde yukarıdaki linkteki gibi, benzer ama daha farklı özelliklerde ve daha iyi olması gerekiyor. Excel bilgim hiç olmadığı için bir uzmana ihtiyaç duymaktayım. Not: İçerikleri kendi...

... catogory : oficce firnute web site language : Turkish seo work : google optimization turkish words example : offic firnuture ( ikinci el ofi mobilyası - ikinci el ofis mobilyaları - ikinci el buro mobilyası..) its importand Sample design of the website would look like I want to deliver a fully finished, ready to use website. web site must be search engine friendly, definitely. Turkish needs to get higher rankings in the search engines with keywords....

I'm launching an online store that specializes in selling high-quality leather bags. The objective is to target both men and women who appreciate stylish and durable accessories. Key Requirements: - Ecommerce Store Setup: I need help in setting up a professional and user-friendly online store. This includes ensuring that the platform...customizing online stores, particularly with a focus on product categories. - Payment Gateway Integration: Prior experience in integrating and configuring secure credit card payment gateways is highly desirable. - Design Sensibility: Ability to ensure the store design is visually appealing and aligns with the sophisticated nature of leather goods. - SEO Optimization: Basic understanding of search engine optimization to help boost the store'...

...keep in mind that changes can still be made during the testing phase ! I am looking for a talented web developer to launch a Usenet search engine website. This is a unique opportunity for someone with hands-on experience in building secure, efficient and user-friendly search platforms. Here's a snapshot of what's on my wish list: Skills and experience: - Knowledge of HTML (as stated, but ideally also Python, JavaScript or PHP). - In-depth knowledge of NNTP (Network News Transfer Protocol) - Good track record of creating well-documented, bug-free code - Ability to implement basic security measures to protect user data Project specifics: - Search engine is already functional, only improvements and a few customizations will be needed - Changes and adjustments are...

Check this website I want more content to my website's product page As a client seeking to bolster my digital presence, I'm looking to onboard a proficient digital markers. I primarily need assistance with: - Social Media Management - Search Engine Optimization (SEO) - Content Creation The focus of this campaign is to increase website traffic. It will target diverse age groups, including: - Youth (18-24 years old) - Adults (25-34 years old) - Middle-aged (35-54 years old) In light of this, freelancers with a well-rounded skill set and a proven ability to engage diverse audiences will have a distinct advantage. The ideal candidate would be well-versed in devising and implementing innovative strategies that drive traffic.

...Integration APIs: Integrate logistics integration APIs to streamline shipping and delivery processes. 13. Content Review and Update: Review and update website content to ensure accuracy and relevance. 14. Multiple Currencies and Geolocator Feature: Add support for multiple currencies and a geolocator feature for localization. 15. SEO System/Plugin: Implement an SEO system/plugin to improve search engine visibility. 16. Country Taxes System: Set up a country taxes system to comply with local tax regulations. 17. Responsive Mobile Performance: Optimize the website for responsive mobile performance to ensure a seamless user experience across devices. 18. Social Media Integration: Set up and integrate social media accounts for enhanced engagement and visibility. 19. Performanc...

I am looking for an experienced mobile app developer who can create a mobile e-commerce application for both iOS and Android platforms. The primary goal of this app is to provide a seamless shopping experience for users who watch videos on the platform. Key Features: - The app should offer both product selling an...find and purchase products they discover while watching videos. Ideal Skills: - Proficiency in mobile app development for both iOS and Android. - Previous experience in developing e-commerce apps, especially those with integrated video streaming capabilities. - Strong understanding of UI/UX design principles to create a visually appealing and user-friendly interface. - Knowledge of product search engine optimization techniques to enhance user experience and increase co...

...targeting international markets and seeking a skillful SEO specialist capable of enhancing my site's SEO significantly. Primarily, the job entails the implementation of advanced techniques that will improve the site's backlinks profile and overall ranking. Key Job Responsibilities: - Enhance business website's technical SEO - Generate high-quality backlinks - Improve website ranking on search engine result pages The ideal candidate should have: - Extensive experience with Business Websites SEO - Expertise in link building strategies - Vast knowledge in international SEO practices. I am looking for professionals who can provide detailed performance reports regularly. Your bid should highlight your plan to improve my website's ranking as well as your...

I'm seeking a seasoned digital marketing professional with expertise in various areas to generate leads for my business within the professional demographic, aged 35-54. Key Responsibilities: - Develop a comprehensive social media marketing strategy to increase brand visibility and generate leads among professionals aged 35-54. - Implement effective search engine optimization (SEO) techniques to optimize our website for search engines and drive organic traffic from professionals. - Establish and manage an SMS marketing campaign to further target and engage the identified demographic. Skills and Experience: - A strong track record in creating and executing social media marketing campaigns that specifically target professionals. - Proven experience in SEO with a focus on lead g...

...looking for a skilled WordPress integrator to convert our web designs into a pixel-perfect, high-performance, SEO-friendly bilingual website with a mobile-first approach. The project scope includes integrating 24 pages across both desktop and mobile versions (48 page designs total). The ideal candidate will have a proven track record of integrating responsive designs into fast, secure and search engine optimized WordPress sites. Key requirements: Integrate our provided desktop and mobile designs for 24 pages into a fully responsive, mobile-first WordPress theme Implement bilingual functionality in French and English (with possible future languages) Integrate custom designs for product category and product detail pages Integrate our blog design for articles Set up SEO-friendly UR...

...developer to create a Serp Tracking system for my Perfex CRM tool. Key features include: - **Rank Tracking:** The completed system should be able to track keyword ranks efficiently. - **Keyword Rank Tracking:** Instead of tracking URL or competitor ranks, the focus should be on keyword ranking. - **Detailed Tracking:** The system should be capable of tracking and delivering the top 500 search engine results for each keyword. Ideal candidates will have previous experience building Serp Tracking systems particularly for Perfex CRM. Proficiency in keyword rank tracking is a must for this job. and -- I want to develop a Serp Tracking system for the Perfex CRM system. The customer's website is available in the customer data. I need a system where I can enter various k...

I need a freelancer with experience in installing Dspace 7.6 on Ubuntu 22.04 LTS. Key Requirements: - Proficient in Ubuntu 22.04 LTS - Experience in Dspace 7.6 installation - Ability to Installing the Backend (Server API) - Ability to Installing the Frontend (User Interface) - Ability to Search Engine Optimization - Ability to Scheduled Tasks via Cron For more information read below the link https://wiki.lyrasis.org/display/DSDOC7x/Installing+DSpace

I'm looking for an experienced developer to create a cross-platform e-commerce app for both iOS and Android. Key Features Required: - Payment Gateway Integration: The app should support secure online payment processing to facilitate seamless transactions. - User Reviews and Ratings: An essential feature to help build trust and encourage user engagement. - Product Recommendation Engine: An advanced feature that suggests products to users based on their previous interactions with the app. I'm looking for someone who has a strong background in mobile app development, particularly in creating e-commerce apps. Experience with both iOS and Android platforms and integrating payment gateways is highly desirable. Additional experience with user review systems and recommendation ...

I'm in need of a Korean speaking virtual assistant to assist with a specific task. You must be able to read and write in Korean and English. Experience in shipping products preferred. - I'm looking for help in conducting research and arranging for the shipping of engine components. The vehicle parts are located in Korea and need to be shipped to Australia. You would be researching for suppliers of specific parts, having regard to cost and quality. . Ideal skills for this job include: - Strong research skills - Experience in logistics and shipment handling - Excellent communication skills If you have experience in this field and can assist with these tasks, I'd be happy to discuss further.

I need an experienced mechanic to repair my sedan's engine. Key Requirements: - The job solely focuses on the engine and its components, excluding other mechanical aspects. - It's imperative that the mechanic has had ample experience and success in engine repair to ensure the job is done right the first time. Timeliness: - The timeframe for this job is flexible, allowing for proper planning and effective work. It would be great if you have experience with this specific make and model of the car, but not a strict requirement. Your understanding of engines and ability to deliver quality work is essential.

...search of an experienced app developer to build a multi-platform application(both Android and iOS) for my project. The application's primary objectives include: - The conversion of text into speech at the click of a button - The ability to subsequently send the original text via both SMS and WhatsApp without needing to manually open the latter You'd be working with our in-house text to speech engine for this project. Previous experience working with different TTS engines will be advantageous. The app needs to be user-friendly and highly intuitive, enabling seamless interaction for the user. Ideal skills for this job include: - Experience in cross-platform mobile app development - Knowledge of text to speech technologies - Proficiency in integrating apps with mes...

I need an experienced SEO specialist to help improve the search engine rankings of my local-targeted HTML CSS website. Key Points: - **Urgency**: The project is time-sensitive, and I need the work to be done as soon as possible. - **Local Focus**: The target audience for the site is local, so expertise in local SEO strategies is essential. - **HTML CSS**: The website is built using HTML and CSS, so experience with optimizing such sites is preferred. Ideal Skills and Experience: - Proven track record in SEO, particularly with local-focused sites. - Strong understanding of HTML and CSS and how they impact SEO. - Ability to work quickly and efficiently to meet the tight deadline. - Excellent communication skills to keep me updated on progress. Please let me know your experie...

I ...content that appeals to both B2B and B2C audiences. - SEO and Backlinking: You'll help me with creating backlinks to promote my website, as well as guide me in optimizing content for search engines. Your experience in boosting search engine rankings will be crucial. - Social Media Promotion: In addition to SEO, I'm also looking for guidance on promoting my content on social media platforms. Ideal Skills: - Proven track record in SEO and lead generation - Exceptional writing skills, especially for blog posts - Experience in creating backlinks and improving search engine rankings - Social media expertise - Understanding of both B2B and B2C audiences. If you have a strategic approach to SEO, are a creative writer, and have a knack for social media promotion,...

I'm looking for an SEO expert to boost my website's search engine rankings and drive increased traffic. KEY REQUIREMENTS: - Increase Website Traffic: My main goal is to attract more local customers to my landscaping services website. The successful freelancer will be able to implement strategies that drive relevant traffic to my site. - Improve Search Engine Rankings: I'm also looking to improve my site's positioning in search engine results. I need someone who can perform a detailed SEO audit, identify areas for improvement, and implement effective strategies to boost my rankings. - Understanding of Local SEO: As my target audience is local, it's crucial that the freelancer understands the nuances of local SEO and can tailor their approach...

I'm seeking a skilled backlink builder to enhance my website's SEO performance and visibility to a wider audience. Key Project Details: - Purpose: The backlinks should primarily aim at improving the search engine rankings, generating organic traffic and increasing the visibility of my website. - Target Audience: The target audience of my website is the general public. - Domain Authority: The backlinks should target high domain authority sites (61-100) to ensure a substantial improvement in my website's online presence. Ideal Candidate: - Expertise in backlink building and SEO techniques. - Proven experience in securing high domain authority backlinks. - Ability to understand my target audience and tailor backlinks to appeal to them. - Strong analytical skills to ...

I'm looking for a skilled SEO professional who can help me boost myrealtypage-based website's performance. Key Points: - I aim to increase the website traffic, improve search engine rankings, and generate more leads - ultimately aiming for a broader audience reach and higher conversion rates. - My primary target audience includes home buyers and mortgage applicants. Your work should be tailored to attract and engage these specific groups. - Time is of the essence - I need this project completed as soon as possible. In addition to SEO, I would also like to incorporate a Facebook Messenger chatbot into my website, similar to the implementation on This feature is crucial for enhancing user experience and client interaction. I'm looking for a professional with proven

...include: - Shopify theme development: I need assistance in selecting an appropriate theme that will enhance user experience and boost sales. Your expertise in Shopify theme customization and performance optimization is crucial. - Web Performance and Speed: I'm looking for someone who can ensure that the website's speed and performance are optimized for a seamless user experience and to improve search engine rankings. The essential features include: - Product search and filtering - Customer reviews and ratings - Secure payment gateways - Customer Experience - Integrations with necessary tools for marketing and analytics. Ideal candidates should have: - Proven experience in developing successful Shopify websites - Strong understanding of ecommerce principles and user ...