Implementing combinational logic efficiently in QDI designs is hard, due to the need to acknowledge every transition, and naive approaches are often used. The paper demonstrates the problem of using Delay-Insensitive Minterm Synthesis on anything but the smallest designs.These problems can be overcome by employing techniques from MultiLevel Logic synthesis. An initial method using Roth-Karp dec...

سابقه و هدف: در کشور ایران از حدود 5/88 میلیارد مترمکعب آب استحصال‌شده منابع سطحی زیرزمینی، ۸۳ یعنی 5/93 درصد به بخش کشاورزی اختصاص می‌یابد، بزرگ‌ترین مصرف‌کننده است. مصرف رو افزایش معلول جمعیت، سطح زیر کشت تولیدات هست که به‌تبع آن سبب کاهش دسترسی افت ایستابی تخلیه آبخوان‌ها شده آمارها نشان می‌دهند این استراتژیک، تهدید کمیت کیفیت است ­طوری ­که هم ­اکنون تعداد زیادی دشت­ های شرایط بحرانی قرار دا...

Natural Language processing (NLP) is a field that combines linguistics, cognitive science, statistical machine learning and other computer science areas in order to compile intelligent computer systems that can understand human languages. NLP has various applications, among which are machine translation, question answering and search engines. The field of NLP has, in the past two decades, come ...

In many domains, teams of hundreds of agents must cooperatively plan to perform tasks in a complex, uncertain environment. Naively, this requires that each agent take into account every teammates’ state, observation, and choice of action when making decisions about its own actions. This results in a huge joint policy space over which it is computationally intractable to find solutions. In certa...

We propose a general approach to modelling algorithmic paradigms for the exact solution of NP-hard problems. Our approach is based on polynomial time reductions to succinct versions of problems solvable in polynomial time. We use this viewpoint to explore and compare the power of paradigms such as branching and dynamic programming, and to shed light on the true complexity of various problems. A...

We report the first EEG recordings of an expert in the 8 advanced meditations called jhanas, and propose 5 hypotheses on how the jhanas differ in EEG power from the eyes-closed resting state at 7 different brain regions. We hypothesize simple changes in the brain regions responsible for each of the 5 principal experiential features of jhana states. These features are: (1) internal verbalization...

We show that the size of the Jordan blocks with eigenvalue one of the monodromy at infinity is estimated in terms of the weights of the cohomology of the total space and a general fiber. Let f : X → S be a morphism of complex algebraic varieties with relative dimension n. Assume S is a smooth curve. Let U be a dense open subvariety of S such that the H(Xs,Q) for s ∈ U form a local system (which...

High redshift galaxy clusters have traditionally been a fruitful place to study galaxy evolution. I review various search strategies for finding clusters at z > 1. Most efforts to date have concentrated on the environments of distant AGN. I illustrate these with data on the cluster around 3C 324 (z = 1.2) and other, more distant systems, and discuss possibilities for future surveys with large t...

At OAB we were, during the year 1998, deeply involved in planning two important space missions for which very large ground based telescopes, VLT in particular, would play a very large and important role in the optical followup. The study of the first mission, Wide Angle X-ray Survey using a Wide Field X-ray Telescope, was coordinated by the Observatory of Brera, involved mainly Italian industri...