Welcome to the website of Computer Scientist Dr. Leslie Sikos!
The site also serves as a comprehensive resource for Web developers and everyone interested in Web technologies, especially Web standards. Learn more about emerging Web technologies such as HTML5, CSS3 modules, and SVG, Semantic Web research and development, machine-readable metadata, Web accessibility, Social Networks, Open Linked Data, and more! The HTML5 tutorials, CSS3 best practices, and XML techniques cover popular topics such as HTML5 video embedding and CSS3 transitions.
The site is not only fully standard-compliant, but also conforms to all Web accessibility guidelines. Check the Help (or press “L”) for more info.
Based on 18 years experience in Web technologies and standards, as well as professional memberships and academic affiliations, Dr. Sikos provides website standardization, website optimization, semantic websites, ontologies, Linked Data, accessible websites, Responsive Web Design, and more!
If you are not familiar with the technical terms appear throughout the site, please visit the Glossary.
It is a common misbelief that Web development is about design and appearance only. In fact, websites can be boosted with advanced technologies in order to achieve robust functionality, interoperability, expected behavior, machine-readable semantic content, search engine optimized documents, accessible content an so on. Although Dr. Sikos provides complete website development services from domain registration to website maintenance, he is specialized for Web Quality Assurance, including website standardization, Semantic Web, and Web accessibility. Web standards provide optimal document size, fast downloading, and easy maintenence. In contrast to what most people think, Web standardization is not a well-regulated, exact process. It is often oversimplified as a short list of best practices. In fact, full standard compliance covers valid character encoding (preferably valid UTF-8), valid HTML or valid XHTML markup (the stricter the better), valid CSS, valid RSS or valid Atom news feed, valid RDF, valid metadata, valid XML, valid object embedding, valid script embedding, WCAG 2.0 and Section 508 conformance, accessibility-friendliness, the application of Semantic Web technologies, browser- and resolution-independent codes and proper server settings, just to mention the most important ones. Read more…
Being a hand coder Web standardista, Dr. Sikos focuses on valid HTML/XHTML, CSS, and XML technologies, including but not limited to the Open Web Platform, HTML5, XHTML5 (the strict, well-formed version of HTML5), XHTML+RDFa, RSS, RDF, FOAF, and DOAC. Beyond conventional content, Dr. Sikos provides the widest range of metadata, including (X)HTML meta and link tags, Dublin Core, RDF, RDFa, ODRL, IEEE LOM (IMS), microdata, and microformats. Source level editing ensures that Web documents do not contain unnecessary characters. It is a common misbelief that it takes more time to develop sites using this approach. In fact, it depends on the developer’s expertise. Hand coding has several advantages over graphical authoring tools. Read more…
- Full standard compliance and validation (according to W3C/ERCIM/IETF/WaSP/WSG standards)
- Accessibility, WAI/WCAG/Sec508 conform
- Semantic Web technologies
Professional Web presence
Interoperability, accessibility, browser independence, resolution independence, typography, design, internationalization… If you are not familiar with Web publishing you don't have to worry. Dr. Sikos offers professional advice and guidance. Even scientific publication lists of researchers are provided in a professional manner. Decide wisely.
Advanced Web technologies
Whether it is the markup of your webpages, metadata, the description of your social connections or professional publication list, Dr. Sikos provides the latest XML technologies and XML serializations such as XHTML5, XHTML+RDFa, RDF, FOAF, and DOAC.
- HTML5. In spite of the tricky name, HTML5 is not just another HTML language. It is often used in context of Web applications. It is the reformulation of HTML with new capabilities. Read the HTML5 tutorial…
- The Semantic Web. In contrast to the conventional Web, the “Web of documents”, the Semantic Web is the “Web of data”. The Semantic Web provides machine-processable data, making it possible for software agents to “understand” the meaning of information (i.e., semantics) presented by Web documents. Read the Semantic Web tutorial…
- RSS. Really Simple Syndication (RSS) is the most widely used Web syndication format. Since RSS is an XML application, it can be extended through XML namespaces and processed automatically. Read the RSS tutorial…
Request for quote
Appointments can be arranged upon request. If you have a busy schedule you still don’t have to worry since personal meetings are not necessary in all cases. Website negotiations can often be done through e-mail. Feel free to contact.