The classic first-contact science fiction novel that launched the career of Jack McDevitt, the national bestselling author of Coming Home—now revised from the original edition, and featuring a new foreword. From a remote corner of the galaxy a message is being sent. The continuous beats of a pulsar have become odd, irregular…artificial. It can only be a code. Frantically, a research team struggles to decipher the alien communication. And what the scientists discover is destined to shake the foundations of empires around this world—from Wall Street to the Vatican…
The first Priscilla Hutchins novel from Jack McDevitt, hailed by Stephen King as “the logical heir to Isaac Asimov and Arthur C. Clarke.” Humans call them the Monument-Makers. An unknown race, they left stunning alien statues on distant planets in the galaxy. Each relic is different. Each inscription defies translation. Yet all are heartbreakingly beautiful. And for planet Earth, on the brink of disaster, they may hold the only key to survival for the entire human race.
The Roadmakers left only ruins behind -- but what magnificent ruins! Their concrete highways still cross the continent. Their cups, combs and jewelry are found in every Illyrian home. They left behind a legend,too -- a hidden sanctuary called Haven, where even now the secrets of their civilization might still be found. Chaka's brother was one of those who sought to find Haven and never returned. But now Chaka has inherited a rare Roadmaker artifact -- a book called A Connecticut Yankee in King Arthur's Court -- which has inspired her to follow in his footsteps. Gathering an unlikely band of companions around her, Chaka embarks upon a journey where she will encounter bloodthirsty rirver pirates, electronic ghosts who mourn their lost civilization and machines that skim over the ground and air. Ultimately, the group will learn the truth about their own mysterious past.
It is statistically unlikely that humans are the only intelligent species in the universe. Nothing about the others will be known until contact is made beyond a radio signal from space that merely tells us they existed when it was sent. That contact may occur tomorrow, in a hundred years, or never. If it does it will be a high-risk scenario for humanity. It may be peaceful or hostile. Relying on alien altruism and benign intentions is wishful thinking. We need to begin identifying as a planetary species, and develop a global consensus on how to respond in either scenario.
This open access book describes the results of natural language processing and machine learning methods applied to clinical text from electronic patient records. It is divided into twelve chapters. Chapters 1-4 discuss the history and background of the original paper-based patient records, their purpose, and how they are written and structured. These initial chapters do not require any technical or medical background knowledge. The remaining eight chapters are more technical in nature and describe various medical classifications and terminologies such as ICD diagnosis codes, SNOMED CT, MeSH, UMLS, and ATC. Chapters 5-10 cover basic tools for natural language processing and information retrieval, and how to apply them to clinical text. The difference between rule-based and machine learning-based methods, as well as between supervised and unsupervised machine learning methods, are also explained. Next, ethical concerns regarding the use of sensitive patient records for research purposes are discussed, including methods for de-identifying electronic patient records and safely storing patient records. The book’s closing chapters present a number of applications in clinical text mining and summarise the lessons learned from the previous chapters. The book provides a comprehensive overview of technical issues arising in clinical text mining, and offers a valuable guide for advanced students in health informatics, computational linguistics, and information retrieval, and for researchers entering these fields.
You've heard of Hercules, right? Big, strong guy who did tons of amazing, heroic deeds? Well one part of that myth is correct. Hercules was big and strong. But he had an teeny-tiny brain. He couldn't have done any of those heroic deeds if it hadn't been for his friends telling him exactly what to do. Hades sets the record straight on the true story of Hercules.
We are alone. That is the verdict, after centuries of Search for Extra-Terrestrial Intelligence missions and space exploration. The only living things in the Universe are found on the Nine Worlds settled from Earth, and the starships that knit them together. Or so it's believed, until Dr. Kimberly Brandywine sets out to find what happened to her clone-sister Emily, who, after the final, unsuccessful manned SETI expedition, disappeared along with the rest of her ship's crew.Following a few ominous clues, Kim discovers the ship's log was faked. Something happened out there in the darkness between the stars, and she's prepared to go to any length to find answers. Even if it means giving up her career...stealing a starship...losing her lover. Kim is about to discover the truth about her sister -- and about more than she ever dared imagine.
