Alan Robertson

With the ongoing popularity of A&E's Duck Dynasty, the much-loved Robertson family has more to share about family, faith, and love than ever before. Alan (the beardless brother) and his wife Lisa have created a devotional combining their hard-won wisdom about love and marriage to help bring couples closer together and closer to God. Alan and Lisa Robertson had a failing marriage. But with unwavering faith and the unconditional love of their ever-present family, they got through the tough times and rekindled their love. Now the Robertsons want to share what they've learned. Combining the spiritual with the practical, The Duck Commander Devotional for Couples has a simple purpose: to bring couples closer to God and to each other. Designed with busy couples in mind, this devotional encourages husbands and wives to set aside time weekly to enhance their relationship. Spending spiritually meaningful time together every day is often impossible, but Al and Lisa arranged this devotional with realistic goals, allowing you to experience success and the desire to meet together regularly. Each devotional includes inspirational messages, relevant scriptures, thoughtful questions, and prayer suggestions. Whether you are happy in your marriage or struggling to hold it together, setting aside time to focus on each other and deepen your connections will improve your relationship and bring you closer to God.

Colorimetry, the science of quantitvely describing color, is essential for color reproduction technology. This is because it creates standards by which to measure color, using mathematical techniques and software to ensure fidelity across media, allow accurate color mixing, and to develop color optimization. This book is a comprehensive and thorough introduction to colorimetry, taking the reader from basic concepts through to a variety of industrial applications. Set out in clear, easy-to-follow terminology, Ohta and Robertson explain fundamental principles such as color specification, the CIE (International Commission on Illumination) system, and color vision and appearance models. They also cover the following topics: the optimization of color reproduction;uniform color spaces and color difference formulae, including the CIEDE 2000 formula;applications of metamerism, chromatic adaptation, color appearance and color rendering;mathematical formulae for calculating color mixing, maximising luminous efficacy, and designing illuminants with specific properties. Colorimetry: Fundamentals and Applications is an ideal reference for practising color engineers, color scientists and imaging professionals working on color systems. It is also a practical guide for senior undergraduate and graduate students who want to acquire knowledge in the field.