For young Christians about to embark on the collegiate experience, David Horner provides a guide to thinking as a Christian. Carefully exploring how ideas work, he gives students essential tools for thinking critically, contextually and coherently, unpacking worldviews and discerning truth.

"Why are more churches not engaged in practical, substantial ways of taking the gospel to the nations?" When Missions Shape the Mission unpacks a statistical study of traditionally evangelical churches that reveals their anemic level of commitment to the biblical mandate of making Christ known around the world. Veteran pastor David Horner makes the data easy to understand, challenging other pastors to radically assign their best leadership and resources to missions as he looks at where the church is today, how it got there, and where we must go from here: "Let's dream a godly dream. What if you committed to step up and lead your church in the pursuit of becoming a mission-focused church? Then, what if you invited ten of your pastor friends to join you in the effort—and each of them did the same? What would happen to the available missions force beginning right here in the West?"

The study of ethics is primarily associated with questions of morality: “good” and “bad,” “right” and “wrong.” The field of metaethics asks about what we mean by terms like “good” or “right,” and whether they represent real features of the world. In Metaethics: A Short Companion, David A. Horner and J. P. Moreland provide a primer on how to think about questions surrounding the concept of morality—its nature, status, grounding, underlying presuppositions, and philosophical commitments. From a stance rooted in moral realism, Horner and Moreland explore and evaluate the major metaethical positions on offer in the field, including expressivism, error theory, relativism, constructivism, ethical naturalism, and ethical nonnaturalism. They conclude by arguing for the rationality of a Christian worldview as a guiding metaethical position. The study of metaethics equips Christians to think deeply about the nature of reality, knowledge, truth, and morality. Metaethics: A Short Companion offers a clear and concise introduction to the key concepts and debates in metaethics, providing readers with a foundation for reflecting on their own ethical beliefs and practices. The Essentials in Christian Ethics series is designed to illuminate the richness and centrality of ethics to all of Christian life. The series consists of short, introductory volumes written by renowned scholars in the fields of ethics, theology, and philosophy. Each volume explores a crucial element of Christian ethical reflection, approaching the subject from within the broader Protestant moral tradition.

The permeability and capillary pressure of monoporous wick structures have been independently determined using a new experimental approach. In the method, the liquid mass flow rate against gravity is measured by testing the wick at its dryout threshold at different wicking lengths. The permeability and capillary pressure of the wicks are uniquely determined by curve fitting the wicking length-dependent mass flow data and then compared with predictions of several permeability and capillary pressure models from literature to determine the most accurate overall performance model. The model is used to independently optimize all dimensions of a micropillar array wick and maximize the liquid mass flow rate. The existence of optimality is demonstrated through constrained parametric sweeps of each variable in the overall model. A genetic algorithm is utilized in an optimization process to achieve the upper performance limit of micropillar wicks. A device with the geometry predicted by the optimization scheme is fabricated, and its performance is compared against various geometries in order to validate the optimization results. The theoretical mass transport limits of micropillar arrays are determined and compared to performance data from literature using a new term called scaled heat.