archaeology
发表于 2025-3-25 03:58:53
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ACRID
发表于 2025-3-25 11:08:54
Alfred Kleinknecht given set of XML documents and a given set of XML queries over those documents. While there have been a number of ad hoc solutions proposed for this problem, to our knowledge this paper represents a first step toward formalizing the problem and studying its complexity. It turns out that to even def
Introduction
发表于 2025-3-25 13:13:25
fectiveness. In order to empirically evaluate these indexes, it is helpful to have methodologies for generating random queries for performance testing. In this paper we propose a domain-independent approach to the generation of random queries: choose randomly among all logically distinct queries. We
CLAN
发表于 2025-3-25 16:29:47
Introductiones, which are supposed to reflect regular fluctuations in economic life with a wave length of 45–60 years. According to the time schedule of the Kondratieff wave, the period from the 1890s up to about World War I, and that from the late 1940s to the early 1970s, would have to be considered as prospe
tinnitus
发表于 2025-3-25 23:22:48
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闲聊
发表于 2025-3-26 00:13:17
R & D, Patenting and New Research Laboratories in a Long Wave Contexte whether our findings from Chapters 3 and 4 are consistent with statistics on the foundation of new research labs and with more commonly-used innovation indicators such as data on R & D and patenting.
揭穿真相
发表于 2025-3-26 08:17:00
Putting Things Togetheric innovation’ has yet to be found. There are also problems with the determination of points in time of the basic innovations, and especially of the basic inventions. However, the possibility of a selection bias and doubts about representativeness have also been brought forward against the Mahdavi s
射手座
发表于 2025-3-26 08:56:18
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分期付款
发表于 2025-3-26 16:25:51
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发生
发表于 2025-3-26 20:31:32
Patenting, Investment and Employment: A Cross-section Test for Dutch Manufacturing Industryether with the Gellman innovation sample as an indicator of follow-through innovations. We shall investigate the same topic yet again, now using Dutch data. As an indicator of follow-through innovations, patent applications in the Dutch Patent Office will be taken and then related to Dutch investmen