Lighting design course tehran işler

Merhaba, Ben Tuğba Şimşek, Kocaeli Universitesi İngilizce İnşaat Mühendisliği bölümü mezunuyum. Lisans eğitimimin son iki döneminde Erasmus+ programı ile 30 dan fazla Avrupa Birliği ülkelerinde bulunma, seyahat etme ve ingilizcemi geliştirme imkanı elde ettim. İngilizce konusunda ihtiyacınız doğrultusunda bir plan oluşturup konuşma, yazma, dinleme ve geliştirme konusunda size destekçi olabilirim

EC Lighting Design Studio ismindeki firmamızın web sitesinin yeniden, daha yaratıcı ve yenilikçi olarak tasarlanması için profesyonel bir tasarımcı ile çalışmak istiyoruz.

Hello there, I am Rıdvan ilçi from Demand and Growth agency Response DGA. We created our current site on the WordPress template, but we made a lot of changes on the template because additional needs occured. Of course, this inevitably causes some problems for us and affects the speed of the website. That's why we need a site from scratch. It can be HTML, or it can be with well-customized Wordpress. (At this point, we are open to suggestions and we can evaluate which language you want to progress with, if you can specify why you choose this.) However, we do not want to go through a template this time. We want a fast and fluid site that is suitable for personification and modification. There will be form pages such as ebook and case studies, so when these are added, the ...

Musteri ders konularindan birini sececek parasini app programa yatiracak. Ögretmen videoyu hazirlayip programa yollayacak. Program kontrol ettikten sonra musteriye yollayacak. Gelen paradan kesinti yapip ögretmene yollayacak. _______________________________________________ The customer will choose one of the course topics and invest his / her money in the app. The teacher will prepare the video and send it to the program. The program will send to customer after checking. He will cut the money received and send it to your teacher.

Merhaba, ben yurtdışında Robotics üzerine yüksek lisans yapıyorum. Bu dönem aldığım Artificial Intelligence course ile ilgili danışmak istediğim konular var. Eğer ilgilenirseniz detayları aktarırım. Iyi çalışmalar Eren

Elektrik Makineleri dersi için 2 tane kısa soru çözülecek 3 fazlı trafolar ve indüksiyon Motor. 2 sorudan 1ini çözseniz de olur ona göre anlaşılır soruları eklemiyorum konuyu bilen varsa daha sonra gönderirim For the Electric Machinery course, 2 short questions will be solved, 3 phase transformers and induction motor. Even if you solve 1 of 2 questions, I wouldn't add clear questions accordingly. If anyone knows the subject, I will send it later.

Hello, We have an online course project. We want a lesson page which supports webrtc, real time whiteboard and also some other features. The features are; - Real Time - Adding pictures and updating the position and shape of these images - Adding files - Writing with different fonts and colors - Drawing with the mouse on the board, drawing types (thick thin silky gold polishing) - Ability to authorize students for writing - Live video / audio sharing from the camera - Authorization of cameras of students depending on the will of the teacher, if they want, students can enable their cameras too. - Live chat box - Ability to add slides and move on them and draw on them with mouse - Setting the necessary back-end of the software with comments on how to integrate. - A box to ask questions...

...olabilir ) There are dozens of products in the Excel table and the average weights of 500 kg of these products. and they has "A" values. Select 5 or 6 of these products ( average 2500 kg - 2700 kg ) mix I'm preparing. the only requirement is the following: "A" values should be able to be set( weighted average ) so I can adjust. Example : a value-weighted average 250 prepare the mixture. ( of course, may be : can be between 245 and 255 )...

course timetabling konusunda tezimin yazım kontrolü istiyorum. bütün içerik 10670 kelime. 9000 kelimesi tahsisden geçecek.

Hi we are a company that works on ecommerce sotware and data center. We want to software to dress model while customer doing online shopping. This work will begin on textile. For example: While customers doing online-shopping, they can change dress' colour on model and can see how it looks like. Off course every data(colour, size ext...) already posted on system. Merhaba, E-ticaret yazılımları üreten bir firmayız ve bir yazılım istiyoruz. Bu yazılım e-ticaret sistemimize entegre olacak ve bu sayede alışveriş yapan müşteriler alacakları ürünlerin özelliklerini görsel olarak değiştirerek görebilecekler. Örnek olarak t-shirt almak istiyorsunuz. Öncelikle bu tshirt standart beyaz olarak çıkıyor. Siz mavi renk almak istiyorsunu...

I am 26 years years old and married with 2 children looking for part time work from home. I have experience with computers and good typing skills, i have completed a childcare course at Tafe. I really would like this opportunity to work from home as its hard for me to work outside and look after my children.

-----------------------------------------------------------------------ENGLISH--------------------------------------------------------------------------------------- The student teachers and video conferencing, chat and meet in virtual classrooms of white wood. Questions, cameras, computers, or through the transfer of files to prepare in advance, you can easily share and tutoring during the course they want a software that virtual classes, private lessons, payment system on an hourly basis in accordance with the preference of the teacher who taught bought online should be a system that will pay up to minutes or hours outside of this system is web software, iOS (iPhone + iPad) | Android | Windows Mobile needs to yazılımlarıda example of the site and the operating logic: h...

-----------------------------------------------------------------------ENGLISH--------------------------------------------------------------------------------------- The student teachers and video conferencing, chat and meet in virtual classrooms of white wood. Questions, cameras, computers, or through the transfer of files to prepare in advance, you can easily share and tutoring during the course they want a software that virtual classes, private lessons, payment system on an hourly basis in accordance with the preference of the teacher who taught bought online should be a system that will pay up to minutes or hours outside of this system is web software, iOS (iPhone + iPad) | Android | Windows Mobile needs to yazılımlarıda example of the site and the operating logic: h...

I'm looking to hire an experienced English tutor who can conduct face-to-face lessons for beginner level teenagers. The course will run from 20th June to 20th July in Malaysia, encompassing key skills such as: -Conversation -Reading comprehension -Writing skills This intensive tutoring requires the individual to commit 15 hours per week, providing an immersive learning experience for our teens. The successful applicant should have a solid background in teaching English language skills to a similar age group, and ideally familiar with teaching those who are at the beginner level. Dedication, patience and innovative teaching methods are qualities that I hold in high regard. Excited to see how you can help our teens master English. This is a great opportunity for a dynamic E...

I need assistance with electrical drafting for ...industrial setting. You will work primarily with my team to develop an electrical plan mark up from an already finished design. We are looking forward to: - Incorporating the markup into the existing plans for clear visualization of electrical components. The ideal candidate should have expertise in electrical drafting, specifically for industrial projects. In-depth understanding of mark ups and visualization of electrical components is essential for this project. You should also have a strong command of drafting software and be able to collaborate effectively with a team. The project consists of 18 industrial units. The project entails single line diagrams, marking lighting and power plans and drawing underground conduits ...

I require an experienced web developer to build an e-learning web application. The primary audience will be college students. Key Features: - User authentication for security - Course management system for curriculum organization - Progress tracking to monitor student development Learning Resources: - Videos and interactive exercises for active, engaging learning - Quizzes to assess understanding and retention. The ideal candidate will possess a proven track record in web development, specifically with e-learning platforms, and a deep understanding of user experience design for educational purposes.

...statistical analysis to extract meaningful patterns and support decision-making I will provide you with a working file that retrieves data from our Python/R library. Your responsibility would be to process and analyze this data. We use Python/R with Jupyter notebooks. Ideal Skills: - Strong proficiency in Python - Experience with data visualization tools such as Matplotlib, pyplot and of course Pandas - Proficiency in statistical analysis methods and tools I want two reports created in an engaging style that work with any time series datasets. The reports are working demonstration reports to showcase the financial/commodity data for clients so must be well commented with clear analysis sections and comments. Clients can change the datasets used so reports ...

I'm in need of a skilled and versatile photographer who can cater to a variety of photography styles and pur...to capture candid moments is crucial, especially for social media and marketing purposes. Location of Sessions: - I need a photographer who is comfortable working both indoors and outdoors. Ideal Skills and Experience: - Experience in both portrait and wedding photography is a must. - A portfolio demonstrating your ability to capture candid shots is highly desirable. - Proficiency in using lighting equipment and editing software for indoor and outdoor shots. - Great interpersonal skills to make the subjects feel at ease. - An understanding of various photography styles and how they can be adapted to different purposes. Please include relevant samples of your work...

...and Coding Course Webinars Are you a skilled salesperson with a knack for engaging audiences and driving conversions through webinars? We are looking for a dynamic and experienced individual to join our team and help us sell our 100% job-guaranteed Medical Billing and Coding course. About Us: We offer a comprehensive Medical Billing and Coding course designed to provide students with the skills and knowledge needed to secure a job in the healthcare industry. Our course is backed by a 100% job guarantee, making it a highly attractive option for prospective students. Position: Experienced Salesperson for Webinars Responsibilities: Conduct engaging and informative webinars to promote our Medical Billing and Coding course. Effectively communicate the va...

...photos of a kitchen. The purpose of this addition is to make these photos eligible for design awards. • The rangehood is pictured in the third photo: Smeg Portafino in orange and should be a ceiling-mounted where the hole is showing. • The placement of this rangehood needs to be carefully centered over the stovetop in both photos. Attention to shadows, lighting and angles is critical to ensure a realistic addition. Proficiency in photo-editing software like Adobe Photoshop or similar is paramount. Experience in interior design or architectural photo-editing would be advantageous to understand the stylistic elements involved. Please include similar work examples in your bid for consideration. An eye for design, detail-oriented approach and abili...

In search of a female English speaking content creator. The ideal candidate should have a professional demeanor and be able to create engaging social media reels / short videos related to finance. Skills and experience requir...English speaking content creator. The ideal candidate should have a professional demeanor and be able to create engaging social media reels / short videos related to finance. Skills and experience required: - Fluent in both English and Hindi - Can wear professional clothing (blazers, shirts etc) - Experience in creating engaging content - Must be expressive - Must have mic, camera, green screen & lighting Each week we will be needing 12 videos (45 second each) related to the given topics. This is a long term project and will be active for a minimu...

I'm in need of an experienced video content creator specifically for golf course videos. The project will involve making 1-5 videos. Key points for the project include: - Highlighting various aspects of the golf course: I'd like the videos to showcase swings, both good and bad, difficult shots, great shots and great putts. Additionally, I'd like to emphasize how to swing out of a bunker. - Engaging and compelling content: A good understanding of golfing techniques and terminology is a must here. - Attention to scenic views and course layout: The ability to beautifully capture the scenic views of the course and to clearly showcase the layout is crucial. If you have experience in creating sports-related content, especially golf, and are a crea...

I'm seeking a creative and experienced graphic designer to design a logo for my rock band. The final design should be striking, memorable, and suitable for a rock band. The band's name is Rockafella. We just want the attached style, the logo colours white, black and red pretty much the same as the attached picks with the lighting bolt. will be used web site FB, Insta and t-shirts etc.

...video maker to help create a compelling one-minute promotional video for a Play Therapy course. Purpose: The overarching goal of the video is to: - Increase course enrollment - Raise awareness about the importance of play therapy - Highlight the exclusive benefits offered by this particular course Audience: The video should be crafted to address: - Parents - Educators - Therapists - Counsellors Skills & Experience: The ideal candidate would have: - Excellent video editing and content creation skills - Prior experience of creating engaging marketing videos - Familiarity with educational content - An understanding of the target audience Inspirations can be drawn from previous successful educational course promotional videos, with an emphasis on com...

...Key Features: - Course Creation Tools: I need the system to have user-friendly tools to enable easy content creation and updating. - Student Progress Tracking: Implementation of tools that monitor and track the progress of the students as they move through the courses. - Discussion Forum: A forum that allows students to interact with each other, ask questions, and discuss topics related to the course material. Content Offered: - Video Courses: The platform will have video lectures. - Text-based Courses: Supporting materials in text format. - Interactive Quizzes: Regular quizzes to reinforce learning. - Ispring & similar tools: Ability to embed content from these tools. - Multimedia: The platform should support and display pictures, sounds, and picture with sound conte...

I’m quite familiar with Moodle. It’s a widely used open-source learning management system (LMS) that supports educators in creating and delivering online courses. Moodle offers various features, including customizable course creation, quizzes, assignments, forums, and grade management. It is highly flexible and can be tailored to fit different educational needs. If you have specific questions about Moodle, such as how to perform certain tasks or best practices for using it, feel free to ask!

I need a professional to develop an engaging medical education website for a written/video format course with an integrated question bank. Here, the primary objective is e-learning of anatomy through a substantial base of over 1000 multiple-choice, true or false questions and short answer questions. Ideal skills and experience to have: - Expertise in e-commerce website development - Experience in creating intuitive, user-friendly layouts - Knowledge of online education or e-learning websites would be advantageous - Familiarity with designing interactive question types, such as multiple-choice and true or false questions - Capacity to handle widespread content effectively Your job will be to incorporate these aspects to ensure the final product is not just functional but also foste...

...perfect Transition to present our Shirt Design. You decide the Intro and create a perfect Transition to show our final Shirt in a final Sequence. Attached you will find the Design and the Shirt you can usw for the Clip and final Outro ourLogo. If you need any Sequenze with the Shirt, just let us know, we try to create it. LONG TERM JOB CONTRACT IS POSSIBLE . Here are a few Ideas: 1. Turbocharger Transition Description: The image of a turbocharger appears as if it is being shot out of a vehicle. The turbocharger spins, and as it rotates, it transforms into the final image on the shirt. Animation: A fast, rotating motion that simulates a "boost" effect, transitioning the graphic from blurry to clear. 2. Skull Transition Description: A skull design...

...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 unpaid logic test. In other words, I would not pay you any money whatsoever if you were to pass the first logic test. However, I would pay you $25 (Twenty-Five Dollars) if you were to pass the second logic test, and $50 (Fifty Dollars) if y...

I'm looking to collaborate with a skilled freelancer to develop a comprehensive online module on research methodology. This module is aimed at non-clinical staff and graduate students who are beginners in the field of research methodology. Key Objecti...Experience: - Experience in developing educational content or courses in the field of research methodology - Strong understanding of research methodology and the ability to simplify complex concepts for beginners - Good knowledge of basic statistics and manuscript writing for publication Your role will involve creating engaging powerpoint presentation. A background in teaching or instructional design would be an advantage. This project offers an excellent opportunity to contribute to the growth and development of individuals n...

Looking for an adept and creative freelancer capable of transforming a script into 22 mins of engaging 2D animation specifically designed for adults. Key requirements: - The scripts are transcribed dialog - This is for a parent education and safety course. Only apply if you can handle mature situations. - Proven experience in script interpretation and 2D animation. - Ability to create compelling scenes that communicate the script’s concept effectively to an adult demographic. - Timely delivery of the project without compromising quality. Freelancers with a portfolio that demonstrates their experience in creating adult-oriented animations will have a significant edge. Looking forward to stimulating visual storytelling that nails the script's essence.

I am seeking an experienced expert who sp...studios. My YouTube channel focuses on creating Vlogs, Tutorials and Product Reviews. With respect to equipment, I currently have a camera, microphone and lights. However, I require assistance in optimizing these elements to achieve professional-looking videos. Primary filming is to be done at home, thus the setup should work well within this context. Functional, versatile layout and controlled lighting are key considerations. The ideal candidate will demonstrate: - Extensive experience in advising on video production setups - The ability to provide effective solutions specific to home environments - Knowledge of equipment suitable for Vlogs, Tutorials, and Product Reviews. - Knowledge of Sony Zv-1 camera - Knowledge of Camtasia editin...

This first milestone I will set at $50, since there may not be much work involved, but we can of course create more milestones as necessary.

I'm currently searching for an experienced AutoCAD Designer who can help craft detailed plans for a golf simulator. The main focus areas are: 1. Swinging Area: You will be provided with specific width and height measurements to guide your design. 2. Integration of Electronic Components: We need plans for mounting and installing the electronics that make the simulation possible. 3. Flooring Material & Lighting Requirements: The design should incorporate the specified materials and suitable lighting for the swinging area. Experience in designing sports simulators or similar environments would be a huge plus. Please, show examples of your previous work in your proposal if available. Succinct and accurate drawing styles are appreciated. Thank you for your...

...photorealistic renders 3. **Scenes:** Each image should feature a unique bathroom design that complements the sanitary fitting product. 4. **Focus:** The product should be prominently featured and seamlessly integrated into each bathroom scene. 5. **Purpose:** Social media marketing (Instagram, Facebook, etc.) **Requirements:** 1. **Experience:** - Proven experience in 3D rendering, particularly with interior designs. - Portfolio showcasing previous work in artistic and photorealistic renders. 2. **Technical Skills:** - Proficiency in 3D rendering software such as Blender, 3ds Max, or equivalent. - Ability to work with provided 3D models and integrate them into custom scenes. - Strong understanding of lighting, textures, and materials to create realist...

I'm looking for a skilled designer and SEO expert to create 4 landing pages, each with a minimalist and clean design. The main goal of these pages is to generate leads and sales for my course on Hotmart. Additionally, I need an "About Me" page designed. Key Tasks: - Design 4 landing pages with a minimalist and clean style - Incorporate text and images on the landing pages - Ensure the landing pages are well-optimized for SEO - Create an "About Me" page that aligns with the minimalist and clean design of the landing pages Ideal Freelancer: - Experienced in landing page design, particularly with a focus on lead generation and sales - Proficient in SEO optimization for websites and landing pages - Skilled in creating attractive, us...

I'm seeking a skilled iOS and Android developer, with proven experience in designing and building complex, subscription-based applications. Features: - An intuitive interface facilitating life coaching, psychotherapy and addiction services, coupled with comprehensive course content. - Rich profile pages that offer an in-depth view for each user. - Direct messaging capabilities for seamless communication. Activity Tracking: A core element of this app is the tracking of users’ activities. This entails: - Sleep tracking: To monitor and analyse the user's sleep patterning. - Mental health tracking: A holistic mental health tracker incorporating mood patterns, meditation frequency and daily tasks check-in. Subscription: - A Monthly subscription option is needed, re...

I'm looking for a skilled Photoshop artist to professionally enhance a photo by adjusting the colors and lighting. Key Tasks: - make the sea blue/turquoise in the attached photo Ideal Skills: - Advanced color-correction skills in Photoshop - Proven record of achieving natural-looking, flattering results in lighting adjustment - Deep understanding of visual focus in a photo and ability to subtly shift it to a chosen object or person.

I'm looking for a proficient photographer, adept at capturing the right moments to create a mesmerizing chronicle of a birthday party. Key captures include: - Cake cutting ceremony - Decorations - Guest interactions - General event amb...adept at capturing the right moments to create a mesmerizing chronicle of a birthday party. Key captures include: - Cake cutting ceremony - Decorations - Guest interactions - General event ambience The ideal candidate should have impressive portraiture skills and experience documenting similar events. Please provide your portfolio showing prior event coverage. Enthralling composition and superb lighting knowledge is a must. A knack for capturing spontaneous moments and collaborative spirit to discuss specific shot requirements will be high...

We are seeking a talented Houdini/C4D 3D Artist to create captivating animations for our website. The ideal candidate will have a strong background in 3D modeling, animation, and visual effects, with a keen eye for detail and creativity. Proficiency in Houdini and Cinema 4D. Strong portfolio showcasing 3D animation work. Experience with modeling, texturing, lighting, and rendering. Ability to work collaboratively in a team environment. Please reference previous work samples. Good luck.

I am a content creator on YouTube launching a course in the fall of 2024, I am offering a fantastic opportunity for an experienced video editor to create an engaging and dynamic learning journey for my audience. Project Objectives: - Edit a total of ~ 25-30 videos, which will make up the lessons for the course. Video length will be anywhere from 5-15 minutes each. Total edited video content will be 3-4 hours. Footage will include 2 camera angles and potentially some b-roll of relevant information to be supplied by me. - Integrate branding assets into edits for cohesive, sleek, professional, and engaging online course videos. - Enhancing the footage with animations and effects to maintain student engagement and improve knowledge retention. This will include some ...

I am seeking a creative ad designer who specialises in Facebook advertising. The aim is to produce an advert which can be translated into multiple languages to target different countries. The ad is for a downloadable video course, for those whose native language is not English, teaching what to say in a job interview in English. Predominantly my market would be working professionals aged between 25 and 50 who are likely to have to attend job interviews in English. Main tasks would be : - Creating an engaging Facebook ad - zeroing in on target group of potential customers (possible later task) - designing an effective landing page for ad clicks current page (in Italian) can be found at I can

I'm in need of a professional photographer who excels in product photography. Our project centers around creating engaging photos of an Apple AirTag Holder for our product listing on eBay. The successful freelancer will masterfully capture different angles of the holder that include: - Front view - Back view - Side view An eye for detail, lighting, and aesthetics that accentuate the product features is a must-have skill. Previous experience with electronics product photography will be highly advantageous. Let's make our product stand out and attract potential buyers with high-quality photos.

I'm seeking a skilled 3D artist who can provide architectural visualization for a commercial building. Utilizing the detail from my provided plans, you will: - Create a photorealistic 3D rendering of the building. - Ensure it includes detail with textures and lighting to provide a lifelike representation. - Produce high-quality images suitable for both digital and print use. The ideal candidate will have a vast experience in 3D rendering and architectural design, with the ability to produce photorealistic images. Familiarity with commercial building designs will be a definite plus.

Education Website with Live Class Feature The project requires comprehensive full-stack development skills, with the aim to create a robust and functional website targeting students. The layout should be intuitive, offering a seamless learning experience. Key Features: - A fully functional and interactive landing page that includes contact forms and social media integration for enhanced communication. - A secure payment gateway offering an effortless checkout process for users. - Implementation of video and study material storage facilities. - Live classes integration providing real-time learning experiences. Study Material Details: - Incorporation of text files, video lectures, and interactive quizzes for a well-rounded learning experience. The project offers a strict timeline, h...

I'm specifically interested in a 3D and animated style logo for this project. The logo will primarily be used on our website and Visiting Card and T-Shirt, so it should be versatile enough to look good in both digital and physical formats. You need to bring logo to life in 3D and in ANIMATION also....it should be moving. I have made a rough logo, please refer At...think my idea of Blue and Orange is not that good and you have some better colours in mind, I won't mind using that, but my first preference would be blue and green. Keep a slight colour difference between Icon and word "Galaxy" DO NOT call or whats app me, communication should happen through Freelancer chat only. One who delivers within1 day has higher chance of getting his logo selected, of course...

...ghostwriter to produce in-depth online courses about self-help, nutrition, and health. Each course should be longer than 2 hours and take an inspirational direction, aimed at uplifting the spirits of the audience while also imparting crucial knowledge and insights on the subject matters. Key Skills: - Ghostwriting experience, particularly in online course creation. - Strong knowledge on self-help techniques, nutrition guidelines, and exercise routines. - Ability to write in an engaging and inspirational style. Job Responsibilities: - Developing detailed outlines for each online course. - Creating engaging, inspirational content around the topics of self-help, nutrition, and exercise routines. - Ensuring each course runs longer than 2 hours in duration. ...

I'm seeking a proficient developer to design a captivating website for my business, with a primary focus on lead generation. Specifically targeting students and office employees, your work should reflect a deep understanding of this demographic. Key Web Content Includes: - Noteworthy course offerings. Ideal Skills: - Web Design - Understanding demographics - SEO (for lead generation) - UX/UI Design for ease of use - Experience in education or corporate sector would be beneficial. Let's partner together to create a compelling platform that serves as a beacon for aspiring learners and employees.

I have a high-resolution JPEG image with brown grass that I need altered to a natural-looking green. The picture is of exceptional quality, so the adjustment needs to be very precise. Key requirements: - Change brown grass to a natural looking green across the entire image - The color change should be seamless and look realistic in all lighting conditions within the photo Ideal Skills and Experience: - Proficient in Adobe Photoshop with experience in high-resolution photo editing - Strong color correction and natural-looking color matching skills - Attention to detail and ability to make the change look as realistic as possible Please only apply if you have a portfolio of similar work to showcase your skills.

I'm in need of a professional photographer to take high-quality portrait photos. The ideal candidate should be skilled in portrait photography, capable of capturing the essence of the subject and creating visually appealing images. Key requirements: - Experience in portrait photography is essential. - Proficient in using high-quality cameras and lighting equipment. - Must have a portfolio of previous work demonstrating proficiency in this area. - The ability to work well with subjects to ensure they are comfortable and the resulting images are natural and engaging. Please let me know if you have a preference for indoor, outdoor, or both, as the location is flexible based on your expertise.