Vab print driver jobber
Vi trenger å designe ny nettside. Vi driver med webutvikling, grafisk design, annonsering, video og seo. vi trenger en nettside som ser proffesjonell ut design messig samtidig som den skal være informativ og selgende.
...com/vippsas/vipps-ecom-api Please contact us as soon as possible. Thanks. Norwegian: Hei! Vi ser etter en langsiktig partner for å hjelpe oss med å utvikle "Vipps"-integrasjoner på nettsiden vår. Vi holder til i Bergen. Vi driver flere e-handelsbutikker gjennom Shopify, vi ønsker å utvikle Vipps Hurtigkasse som betalingsalternativ. Dette er en sekundær knapp under den klassiske "Legg i handlekurv-knappen". Denne knappen lar norske kunder som har Vipps-appen installert, bestille et produkt med kun 2 klikk. Jeg legger ved en video som viser hvordan dette fungerer. Budsjettet vårt er ganske høyt. Bare send meg et tilbud.
Driver et advokatfirma og vil lage en ny side som gjelder arbeidsrett. Vi bistår både firmaer og private personer. Ønsker 1) en delikat forside 2.) 6-8 undersider om temaer 3) et kontaktskjema på første side - ønsker et moderne og delikat og brukervennlig design Law firm wants to create a new site that deals with employment law. We assist both companies and private individuals. Want 1) a delicate front page 2.) 6-8 subpages on themes 3) a contact form on the first page - want a modern and delicate and user-friendly design
Hei! Jeg driver med web utvikling i Norge, og leter etter en norsk person som kan av og til hjelpe meg med lette diverse oppgaver: innhold skriving, oversetting, prooflesing eller lingende.
Hei! Jeg driver med web utvikling i Norge, og leter etter en norsk person som kan av og til hjelpe meg med lette diverse oppgaver: innhold skriving, oversetting, prooflesing eller lingende.
Jeg driver en nettbutikk innenfor bilbelysning og bilstyling som heter Jeg søker etter en dyktig og rimelig SEO-person som kan hjelpe meg med å få søkeordene (keywords) til mine produkter høyt oppe på Google-søk og Google-ranking. Er du dyktig og rimelig, så vil flere prosjekter komme. Mvh, Alex
Jeg driver en bedrift som utfører maling av vegger, snekker arbeid og legger fliser. Mitt ønske med en nettside er: * Å få nye kunder. * Fremheve min kompetanse og kompetanse beviser. * Opprette tilit til mine kunder. * Henvise eksisterende kunder til min nettside for å vise kompetanse. * Åpenhet om hva slags utgifter en nettside vil ha per år i tilegg til fastprisen.
Jeg driver en bedrift som utfører maling av vegger, snekker arbeid og legger fliser. Mitt ønske med en nettside er: * Å få nye kunder. * Fremheve min kompetanse og kompetanse beviser. * Opprette tilit til mine kunder. * Henvise eksisterende kunder til min nettside for å vise kompetanse.
Hei jimlei. Jeg driver med et prosjekt som handler om å lage en nettside med mulighet for innlogging til brukere. Det er rettet mot en spesifikk industri, så det jeg jobber med nå er å få laget en prototype av denne nettsiden slik at jeg får testet om dette er noe som folk vil faktisk ta i bruk eller ikke. Kunnskapen min med webutvikling er altfor liten og jeg har merket, etter å ha prøvd i ca 2 mnd, at dette blir for vanskelig. Jeg er veldig interessert i webutvikling, og ville gjerne tatt meg god tid for å lære det, men sannheten er at det er viktigere å få laget denne prototypen i gang så fort som mulig. Derfor kontakter jeg deg, for å vite om dette er noe du er interessert i å vite mer om ...
Hei. Jeg driver en virksomhet innenfor lederrekruttering. Av og til trenger jeg prosjekthjelp til å kontakte nasjonale eller internasjonale kandidater. Konfidensialitet er et must, og eget konfidensialitetsærklæring må signeres. Vi ser etter noen som har en kommersiell bakgrunn med utdannelse som siviløkonom eller MBA. proejktmedarbeideren må kunne Norsk og engelsk meget godt, ha en klar vetrbal fremtoning og være systematisk i sitt skriftlige arbeide.
Jeg trenger en som kan skrive artikler. Omlag 30/40 artikler hver mnd! Hver artikkel, omlag 1000 ord. Tematikken er om grundere, for grundere og tilbud til bedriftseiere, info for interessant leseinnhovld for de som driver og vil starte firma i Norge. Dette skal til et magasin rettet til bedriftsledere og eiere i selskaper under 5år
Hei. Jeg driver et lite Content-byrå, og kunne gjerne tenkt meg å tilknytte meg en tekstressurs som hjelper meg når jeg trenger det. Akkurat nå har jeg tre whitepapers/mini-guides som jeg holder på å skrive, og har lagt ut et oppdrag for hver av dem. På den måten kan jeg teste noen tekstressurser ut. Dette oppdraget gjelder whitepaperet: "Regler for ferie og fravær". Det finnes ganske gode kilder på nett, så dette whitepaperet tenker jeg vil være relativt enkelt å skrive. Dette whitepaperet vil nok være et sted mellom 3 og 5 sider lengdemessig, med en innledning, ulike avsnitter og en konklusjon, og til slutt kilder. Si hvor mange timer du tror det vil ta pluss din timespri...
Hei. Jeg driver et lite Content-byrå, og kunne gjerne tenkt meg å tilknytte meg en tekstressurs som hjelper meg når jeg trenger det. Akkurat nå har jeg tre whitepapers/mini-guides som jeg holder på å skrive, og har lagt ut et oppdrag for hver av dem. På den måten kan jeg teste noen tekstressurser ut. Dette oppdraget gjelder whitepaperet: "Disse rådene bør regnskapsfører kunne gi sin kunde". Den er selvsagt enklest å skrive dersom du har regnskapserfaring. Hvis ikke må du drive litt Research på nett. Jeg har allerede skriblet litt stikkord i dokumentet og funnet frem til noen kilder, slik at du ikke starter helt fra scratch. Whitepaperne skal være 4-6 sider, med en i...
Hei. Jeg driver et lite Content-byrå, og kunne gjerne tenkt meg å tilknytte meg en tekstressurs som hjelper meg når jeg trenger det. Akkurat nå har jeg tre whitepapers/mini-guides som jeg holder på å skrive, og har lagt ut et oppdrag for hver av dem. På den måten kan jeg teste noen tekstressurser ut. Dette oppdraget gjelder whitepaperet: "Dette gjør bedriftene som lykkes med kundetilfredshet". I dokumentet står det noen stikkord og tabeller, men du må selv finne ut mer om hvordan toppbedriftene jobber med kundetilfredshet. Noe står nok på nettet, og dersom du er supertøff kan du også kontakte noen av bedriftene og spørre. Whitepaperne skal være 4-6 sider, med ...
WE ARE A GIS TEAM AND WE ARE LOOKING FOR A ARCGIS JAVASCRIPT DEVELOPR FOR DEVELOP WEB MAP...IS THE MACRO FUNCTION TO DEVELOP: • LAYER WIDGET THAT EXPOSE A WMS/WFS/FEATURE SERVICES,DYNAMIC LAYER ARCGIS SERVER SERVICES WHIT RELATIVE SYMBOL • FUNCTION FOR MANAGE THE POSITION OF LAYER INTO LAYER WIDGET AND TRASPARENCY LATER • IDENTIFY WIDGET • BASEMAP WIDGET WHIT A CUSTOM WMS SERVICE • LEGEND WIDGET • SEARCH WIDGET WHIT GRAPHIC TOOL (CIRCLE, RECTANGLE) FOR SEARCH ELEMENT ON MAP • PRINT WIDGET • CLUSTERING DATA THIS IS A GENERAL DESCRIPTION OF FUNCTIONALITY, WE WILL BE AVAILABLE A SPECIFIC DOCUMENT FOR DESCRIBE THE DEVELOP OF EACH FUNCTION. IT’S IMPORTANT THAT THE CODE ARE WRITE IN A GOOD WAY AND MUST BE CLEAR, WHIT INDICATIONS FOR...
Jeg driver et eget foretak innen alt som har med avhenigghetsbehandling å gjøre. Fortaket heter Addiktolog Terapi og hjemmeside: Ute etter ett proft design av loge som representerer mitt firma og det jeg driver med. I tillegg skulle jeg gjerne hatt noen til å designe en firma header som jeg kan bruke på twitter, facebook etc....
hei, siden du er norsk, så tenkte jeg høre med deg litt ang en side jeg driver med! betaler såklart! lettere og kommunisere meed noen på samme språk!
Jeg trenger noen til å sette opp flere registreringskjemaer til min nettside. Vi driver en multigaming community side, og har flere spillseksjoner som de kan søke seg inn på. Foreksempel: Guest er inne på nettsiden vår å ønsker og søke seg inn på arma 3 seksjonen, da velger han arma 3 søknad fra en dropdown meny og fyller ut søknadsfeltene som er for akkuratt dette spillet, om en annen guest søker etter cs:go så vil han få opp alle feltene for akkuratt det spillet. Admin kan også se over søknaden og godkjenne/avslå, om godkjent da blir han medlem av siden. Er dette mulig?
Arbeidsoppgaver Vi søker frilansere (Clickworkers) som kan skrive eller korrekturlese frie tekster, slik som for eksempel produktbeskrivelser, beskrivelser av byer eller hotellanmeldelser. Alt du trenger er en datamaskin med internettilgang. Du kan fritt velge hvor mange timer du ønsker å arbeide og hvor du vil arbeide. Om oss er en crowdsourcing-plattform. Våre klienter driver større prosjekter som blir fullført av frilansere som vi kaller clickworkers. Vi deler opp hvert oppdrag i flere småoppdrag og betaler clickworkers til å fullføre disse oppdragene. Ønskede kvalifikasjoner Perfekte skriftlige norskkunnskaper er nødvendig. I tillegg er gode språkkunnskaper i enten engelsk eller tysk n&os...
Trenger muligens hjelp til bl.a digitale annonser i ny og ne: - Vanlige stillbannere og Flashbannere til nettannonser - Bannere til bruk på Facebooksider (forsidebilder) - Fangates til Facebook (bl.a 800x800 format) - Tabbilder til Facebook (111x74) - Flyers, logoer og annonser til magasin/print. - Endre og tilpasse gamle annonser til nytt format Det viktigste er at dette kan leveres på kort varsel, da det plutselig kan bli snakk om et par annonser i forskjellige format som må lages. Annonsene leveres til kjente nettsteder og magasin i hele Norge. Vi ønsker en stk pris / månedspris hvor vi har ubegrenset med bruk av en designer. Har ingenting å si hvor designer sitter, da alt vil foregå over e-post/telefon. Må være t...
I require a versatile and experienced VP of US Operations in the real estate industry. The hired individual will be the main driver of our daily operations, responsible for: - Developing and implementing strategies that align with company objectives. - Overseeing a variety of staff and departments, reinforcing a collaborative environment. - Embarking on property acquisition and development, right from identifying potential investment opportunities to orchestrating development projects. - End-to-end property management, ensuring properties meet our high standards and tenants' satisfaction. The ideal candidate should have a proven track record in real estate, alongside operational leadership, strategic mindset, and hands-on experience in property development and management. Str...
...of my 8 dogs faces and 1 cat with a title above their faces that says “Mistress of the” and then all their faces scattered like a collage on the bottom of the baseball cap that will be used for both digital print and embroidery. Attached are the pictures of the 8 dogs and 1 cat Key Requirements: - Design Style: The design should be artistic and illustrative, rather than text-focused or logo-centric. - Placement: The design is intended for both the front and side of the baseball cap. Ideal Skills: - Strong artistic and illustrative design abilities. - Experience with designing for print and embroidery, particularly on clothing items. - Understanding of how to optimize a design for placement on a baseball cap. - Portfolio demonstrating previous work of similar...
I'm in need of a logo for my business. It should be primarily in blue and should be a wordmark style. This logo will be used both on my website and on printed materials. Ideal Skills: - Graphic design - Logo design - Proficiency in typography - Understanding of color psychology - Experience with both web and print design
I need a skilled graphic designer to create top-notch marketing materials for print. The focus will be on brochures, posters, and banners. The ideal freelancer for this project would have a combination of the following abilities and experience: - Proficiency in Adobe Suite or equivalent graphic design software - Significant experience in designing marketing materials - An understanding of the unique considerations of print design, such as resolution and color matching - Ability to bring creative and innovative design ideas - Demonstrable experience in working within brand guidelines - Strong communication skills to ensure the project’s objectives are met. Previous work in designing print marketing materials will be highly valued. This project requires a hi...
I'm looking for a talented graphic designer to create a unique logo, which will be primarily used for print materials. Key Responsibilities: - Designing a professional, eye-catching logo that suits the print medium - Incorporating my specific color scheme into the logo Ideal Skills and Experience: - Extensive experience in graphic design, particularly with logos - Strong understanding of color theory and how it applies to print materials - Ability to create visually appealing and memorable designs - Strong portfolio showcasing previous logo designs, particularly those used for print - Good communication skills to understand and incorporate my color scheme, and to provide multiple options if needed. Please include a link to your portfolio when you submit...
...high-skilled graphic designer to create a modern and minimalist voucher design. Your role will be crucial in designing an eye-catching voucher that aligns with my brand. Ideal skills and experience: - Solid understanding of modern and minimalist design principles - Expertise in creating print-ready graphics - Proven background in voucher or similar promotional design material. Task Details: - Design a print voucher in a modern, minimalist style - Ensure design is suitable and optimized for high-quality print usage - Collaborate closely to align with existing brand guidelines I don't have soft copy ....
I'm seeking a skilled and creative logo designer to craft a logo that primarily embodies an elegant and sophisticated style. The logo will serve as a tool for professional representation and will be used primarily on print materials such as business cards and letterheads. Key project requirements include: - Creating a logo that exudes elegance and sophistication for professional firm - Ensuring the logo is suitable for print on business cards and letterheads - Looking for a sophisticated lighthouse, with a beam of light shining to the side - Firm name is: Harrison, Anderson Associates Moto: Guiding Successful People.
I am in need of a skilled French Canadian translator to convert my short English story into French. The story doesn't contain any specialized ter...essence and tone of the original content. - It should be culturally relevant and appealing to a French Canadian audience. - Attention to detail is crucial to ensure a seamless and professional print publication. Ideal skills and experience: - Proven experience in translation, particularly for print publications. - Native-level fluency in French Canadian. - A good understanding of English and the ability to maintain the original content's essence and tone. - Experience in literary translation would be a bonus. If you meet these criteria and are confident in your ability to deliver high-quality print-ready transl...
...seeking a seasoned graphic designer who can contribute elegant, classic-style elements for my company's media. The target audience is sophisticated business professionals, so the designs should reflect this by maintaining a respectful and engaging tone. I have a brand kit and templates available for some pieces. Specifically, the support needed includes: - Creation of social media graphics - Print materials design - Infographics, articles, white papers - Videos and presentation slides The ideal freelancer will possess experience in creating designs that resonate with professional audiences, and has a strong ability to work with a classic and elegant aesthetic. A solid understanding of design principles, an eye for detail, and the ability to incorporate brand identity into...
...designs. Consistency: While each box design should be unique, there should be a cohesive style that ties the series together. Versatility: The designs should be adaptable to various box sizes and formats. Print-Ready Files: Final deliverables should be in high-resolution formats suitable for printing, including all necessary bleed and trim marks. Revisions: Willingness to accommodate up to three rounds of revisions based on feedback. Deliverables: 8 unique box designs, each aligned with the respective product theme. Source files in Adobe Illustrator or Photoshop format. High-resolution print-ready files (PDF, PNG, JPEG). Mockups of the boxes to visualize the final product. Timeline: Initial concepts for review: 2 weeks from project start. Final designs: 4 weeks from projec...
I'm looking for a skilled graphic designer who can adjust my logo to fit specific dimensions of 50.8mm (height) and 20mm (width) with high density, suitable for both print and digital use. The final version of the logo should be available in JPEG, PNG, SVG, and ai formats. Key Requirements: - Adjust the size of the logo to 50.8mm (height) and 20mm (width) while maintaining visual integrity and enhancing the density for crisp display. - Deliver the adjusted logo in high resolution, suitable for both print and digital use. - Provide the final logo in JPEG, PNG, SVG, and ai file formats. - Ensure the logo is visually appealing and professional, reflecting the original branding. Ideal skills and experience for this job include: - Proficient in graphic design software and t...
I'm in need of a logo that combines both text and icon to convey a professional vibe. The logo will be used both online and in print so it needs to be versatile and easily recognizable across mediums. Ideal skills and experience for this job: - Proven track record in designing professional logos - Experience in creating logos that work well in both digital and print formats - Ability to combine text and icon effectively in a clean, professional design - Strong understanding of visual identity and branding
I'm in need of a logo that combines text and an icon, with a modern and minimalist style. I plan to use this logo both online and in print. Key Requirements: - Design a combination of text and an icon for my brand - The design should have a modern and minimalist style - The logo should work well both online and in print Ideal Skills: - Proficient in graphic design, specifically logo design - Experience in creating modern and minimalist logos - A good understanding of the technical requirements for both online and print usage If you have a good eye for modern and minimalist design and have a strong portfolio in logo design, I'd love to see some samples of your work. Please feel free to share your past experiences in similar projects.
I require a creative and skilled graphic designer adept in print design. Specifically, the project involves designing captivating print materials for my organization. Key Tasks: - Develop unique and visually appealing designs for brochures - Ensure designs align with the company's branding Ideal Candidate: - Proficient in graphic design tools such as Adobe Illustrator, Adobe Photoshop, etc. - Strong experience with custom HTML and CSS - Solid understanding of print design best practices - Proven ability to deliver excellent designs for print materials, particularly brochures.
I'm in need of a creative and modern strip for our business email signature. Key elements to incorporate into the design include: - Name - Contact details We are a print finishing business , we deal with printers who send their work to us for finishing touches such as lamination, hot foiling, die cutting to complete the product. Our slogan is 'Printing print to life' The design needs to reflect a contemporary, cutting-edge aesthetic that matches the innovative ethos of my company. Experience in clean, bold, and eye-catching designs would be beneficial for this project. The finished product should be seamlessly integrated into my business email setup, and should elevate the professionalism of my communications. Potential freelancers should have previous e...
Hello, I need some minor editing of a brochure. I'm thinking maybe this could take 30 mins work. Are you availaible? I have a Word document that I plan to print on PDF and send as part of a brochure to possible clients. What I need is final touches, alligning all images, and maybe ideas on adding a background and theme (Nothing complex, I want it to be as simple as possible). Thank you.
I have a PSD design that I need converted to vector files. These will be used for printing on medium-sized signage. Key requirements: - Conversion from PSD to vector format: The original design is in PSD format and needs to be converted to a vector format suitable for printing on medium-sized sig...medium-sized signage. Key requirements: - Conversion from PSD to vector format: The original design is in PSD format and needs to be converted to a vector format suitable for printing on medium-sized signage. Ideal skills and experience: - Proficiency with Adobe Illustrator or other vector design software - Experience with preparing graphics for printing - Understanding of color profiles and print resolution - Good communication to ensure the final vector files are suitable for my prin...
...target clients are large and mid-size companies. The logo should appeal to a corporate audience, reflecting reliability and expertise. Submission Guidelines: Formats: The final design should be provided in vector format (AI, EPS) as well as high-resolution PNG and JPG. Versatility: The logo should be versatile enough to be used across various platforms including our website, social media, and print materials. Originality: Submissions must be original and not infringe on any copyrights. Additional Information: We value clean, modern, and professional designs that can stand the test of time. Evaluation Criteria: Relevance to digital marketing and our company’s focus on sales and conversions Creativity and originality Professionalism and appeal to large and mid-size compani...
As a client, I am in need of a professional and skilled Prepress artist who can effectively handle PDF file preparation for printing using Adobe Illustrator. Ideal Skills & Experience: - Expertise in Adobe Illustrator software. - Previous experience with PDF files for print preparation. - Strong understanding of prepress production techniques. - Deep knowledge of publishing standards and specifications. Tasks: - Preparation and optimization of PDF files for the print process using Adobe Illustrator. Candidates who demonstrate a solid track record in a similar field will be considered first.
I'm looking for a professional logo designer to create a logo that will help boost my brand recognition. The logo will be used both online and in print, so it needs to be versatile in terms of its visual appeal and scalability. Key requirements include: - A strong understanding of design principles and branding strategies - Ability to create a unique and memorable logo - Proficiency in graphic design software for both digital and print formats - Experience in designing logos for various platforms I have some preferred colors in mind, so being able to incorporate these into the design is important. Your expertise in color psychology and its application in branding would be a great asset for this project. Please provide a portfolio of your previous logo design work al...
I need a skilled Flutter developer to create a transport app. The app's primary function is to track vehicle locations, primarily used by drivers. Key Requirements: - Develop a user-friendly and efficient app for drivers. - Implement real-time vehicle tracking capabilities. - Ensure the app can notify drivers about their current location.... - Implement real-time vehicle tracking capabilities. - Ensure the app can notify drivers about their current location. Ideal skills: - Proficiency in Flutter framework. - Strong experience with app development. - Capable of integrating real-time tracking features. - Knowledge of handling notifications in-app. Please note, the primary usage of this app is for tracking, notifications and the driver interface, with a focus on simplicity a...
I am in need of ...illustrations for the entire book, each one being integral to the story. - The illustrations will need to be engaging and easy to understand for children, so a background in children's book illustrations is highly preferred. - The final deliverable should be in high-resolution, suitable for print. Ideal Skills and Experience: - Proficient in creating cartoon-style illustrations. - Prior experience in illustrating children's books is a huge plus. - Able to convey emotions and tell stories through visuals. - Knowledge of print quality standards. I'm looking for someone who's not only a great illustrator but also has a passion for storytelling and the ability to bring characters to life. If this sounds like you, I'd love to see som...
I'm currently in need of an HTML expert to take care of several tasks for me. The ideal candidate should have a proven track record in front-end development, responsive design, and creating HTML email templates. Required to create HTML for PDF generation and HTML should be A4 print compatible. Please check the attachment then let me know
I need an experienced designer who can convert 2 existing posters into vector format using Adobe Illustrator. This is to ensure that the posters can be printed at a size of 120 cm width and 180 cm hight without any loss of quality or pixelation, so the final product is crisp and clear. Key requirements: - Posters are ready and do not need any design changes - Conversion to vector format is the main task - I will be printing the posters at a size of 120 cm width and 180 cm hight, so the vectorization must be of high quality to accommodate this - The final deliverable should be in a format that will not lose quality when scaled, such as SVG or PDF. - Experience with large format printing is a plus The deadline for this project is ASAP. Please let me know if you have any questions or need a...
I am seeking a logo graphic designer to create two simple, text-only logos. Please see the attached example for reference. Key Requirements: - Expertise in minimalistic design: A strong portfolio showcasing previous work in minimalistic logo design is a must. - Versatility: Ability to create a design that looks equally good on both digital platforms and print materials, as well as scalable for merchandise. - Color expertise: The logo will predominantly be in white, however, I'd like a subtle touch of pink in one variation, and a touch of purple in another. Please provide samples of your previous work in similar projects.
I'm in need of a talented designer who can create two A5 brochures for my company. The aim of these brochures is to provide essential information about our company and the services we offer, in a vibrant and engaging manner. Key Tasks: - Designi...services we offer, in a vibrant and engaging manner. Key Tasks: - Designing two A5 brochures - Ensuring the design is fun and colorful - Incorporating company's services and contact details Ideal Skills: - Proven experience in brochure design - Strong creative and conceptual skills - Ability to understand and convey a company's brand identity - Proficiency with design software - Understanding of print production process Please include samples of past work in your bid. I'm looking forward to working with a creative...
I need an innovative and modern one-page A4 brochure designed for our new part "Smart Signal Adaptor". The brochure should capture the attention of retailers and distributors of the RV caravan industry. It needs to have a tough rugged look to suit the caravan industry The content that needs to be included in the brochure is solely limited to the product featur...brochure Description of part: - Modified 12 pin to 12 adaptor - Suited to newer vehicles such as Ford Ranger, Dodge Ram, Silverado, FTruck etc - No trailer brakes connection on their dash if the have factory fitted Towpack. - Brake system sends through 500 milliamps to the trailer plug - Resistance signal on dashboard Once job is completed i will need this sent to me in: - high res - low res - print ready w...
I'm in need of an experienced image editor and designer to work on my images. A proficient understanding of both image editing and graphic design is a must. Key Requirements: - Primarily focused on print materials - The style I'm aiming for is artistic and creative. - You'll be responsible for editing images, ensuring they are print-ready while ensuring they maintain the artistic and creative style I'm keen on. Ideal Skills and Experience: - Proven experience in image editing for print materials. - A strong portfolio of artistic and creative design work. - Proficient in image editing tools (e.g., Photoshop, Illustrator). - Understanding of color theory and design principles.
