The deep web is the content that is dynamically generated from data sources such as databases or file system. Unlike surface web where web pages are collected by following the hyperlinks embedded inside collected pages, data from a deep web data source is guarded by a search interface and only can be retrieved by queries. The amount of data in deep web exceeds by far that of the surface web. This calls for deep web crawlers to excavate the data so that they can be used, indexed, and searched upon in an integrated environment. Crawling deep web is the process of collecting data from search interfaces by issuing queries. One of the major challenges in crawling deep web is the selection of the queries so that most of the data can be retrieved at a low cost. This work first comprehensively introduces the state-of-art work in query selection techniques for crawling, then in-depth analyzes the remaining problems, such as cold start problem and return limit problem, and finally presents a novel technique to address them.
A straightforward guide to optimizing information assets in the networked enterprise, this book includes extended, unpublished case studies from major industry with thorough implementation guidance. The text is supported by many tables, flow charts and graphical models.
The strategic and operational use of preemptive strikes transitioned from the traditional tactic of air raids to the use of covert cyber-attacks like Stuxnet designed specifically to disrupt enemy capabilities. Through a close examination of the evolution of preemptive strikes by the Israeli Defense Forces from the 1967 and 1973 wars to its airstrikes on neighboring nuclear production facilities in Iraq and Syria to its use of Stuxnet, operational planners can gain an understanding of the evolution of preemption as a concept. Examining this shift from air strikes to cyber-attacks through the lens of U.S. Army Doctrine and the tenets of Unified Land Operations (Depth, Synchronization, Integration, Adaptability, Flexibility, and Lethality) as well as the cyber concepts of Untraceability and Deception from modern thinkers gives operational planners a deeper understanding of how to conceptualize and integrate cyber activities into planning. By grasping these concepts and their usage in cyber, planners can gain a position of relative cognitive advantage when using preemptive attacks. Conceptualizing and interpreting the evolutionary process of Israeli operational planners and their understanding and planning of preemptive attacks can shed light on how they disaggregated depth and integrated cyber into preemption. Understanding how planners can better utilize cyber weapons similar to Stuxnet in preemptive strikes, contributes to the U.S. Army’s ability to retain its position of relative advantage over its adversaries in future wars.
The emergence of the hominids, more than five million years ago, marked the start of the human odyssey through space and time. This book deals with the last stage of this fascinating journey: the exploration of cyberspace and cybertime. Through the rapid global implementation of information and communication technologies, a new realm for human experience and imagination has been disclosed. Reversely, these postgeographical and posthistorical technologies have started to colonize our bodies and minds. Taking Homer's Odyssey and Kubrick's 2001: A Space Odyssey as his starting point, the author investigates the 'informatization of the world-view', focusing on its implications for our culture – arts, religion, and science – and, ultimately, our form of life. Moving across a wide range of disciplines, varying from philosophical anthropology and palaeontology to information theory, and from astrophysics to literary, film and new media studies, the author discusses our 'cyberspace odyssey' from a reflective position beyond euphoria and nostalgia. His analysis is as profound as nuanced and deals with issues that will be high on the agenda for many decades to come. In 2003 a Dutch Edition of Cyberspace Odyssey received the Socrates Prize for the best philosophy book published in Dutch.
Bitcoin investing – Invest in digital Gold
This book is an excellent beginner's guide to understanding what Bitcoin has to offer, and how it changes the future of doing business. The contents avoid technical details to provide a better understanding to those, who are new to this technology. It will take you by the hand, and show you step-by-step, how digital currency was born by analyzing historical data. Understand why to consider Bitcoin at the first place, and why often called as Digital Gold. Full explanation why is much likely, that the value of Bitcoin will hit 1 million dollars. Examples to understand why Bitcoin is at its early days, and why it's not late to start investing. Wallet technology overview, explaining the key differences between hot wallets, cold wallets, and how to find out what suits you best. Recommendations of the best hot and cold wallets that exist on the market, as well where and how to purchase them. Bitcoin ATMs, their purpose, how to locate them, as well how to use them for both: buying and selling Bitcoin anytime, securely, and offline. Introducing the best online cryptocurrency trading platforms, and explain the key differences, as well their pros & cons. How to recognize online scammers, and teach you how not to be fooled by online thieves. Explaining why it's profitable to trade with Bitcoin, and how to become a mixture of both investor and trader. The Bonus Chapter contains some basics of Bitcoin mining, and its history. How you can mine Bitcoin using your old laptop, or even your Android phone with a free online software.
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