Results 21 to 30 of about 61,953 (261)

تحليل وتصميم نظام الي لتسجيل السيارات

open access: yesIraqi Journal for Computers and Informatics, 1978
يتناول هذا البحث نظام تسجيل السيارات وتجديد اجازات التسجيل ، وتتمثل غايتنا في ايجاد الحلول المناسبة لهذا الجانب ، وذلك من خلال التحليل الاحصائي للنظام الحالي ، ومحاولة السيطرة على عامل الوقت و تخفيف الازدحام ، ومن ثم اقتراح نظام جديد يستند على نظام ...
سرمد جورج   +1 more
doaj   +1 more source

Special Issue on Database Theory [PDF]

open access: yesTheory of Computing Systems, 2020
n ...
P. Barceló, M. Calautti
openaire   +3 more sources

Screening 0D Materials for 2D Nanoelectronics Applications

open access: yesAdvanced Electronic Materials, 2023
As nanoelectronic devices based on 2D materials are moving toward maturity, optimization of the properties of the active 2D material must be accompanied by equal attention to optimizing the properties of and the interfaces to the other materials around ...
Mohammad Bagheri, Hannu‐Pekka Komsa
doaj   +1 more source

A Data Integrity Verification Scheme for Centralized Database Using Smart Contract and Game Theory

open access: yesIEEE Access, 2023
Currently, many companies and institutions use centralized or distributed databases to store massive amounts of data. However, the use of untrusted centralized third-party auditors can result in security issues because these auditors may be malicious and
Siqi He   +3 more
doaj   +1 more source

Equational theories and database constraints [PDF]

open access: yesProceedings of the seventeenth annual ACM symposium on Theory of computing - STOC '85, 1985
We present a novel way to formulate database dependencies as sentences of first-order logic, using equational statements instead of Horn clauses. Dependency implication is directly reduced to equational implication. Our approach is powerful enough to express functional and inclusion dependencies, which are the most common database constraints.
Stavros S. Cosmadakis   +1 more
openaire   +1 more source

Some Problems Related to Reducts of Consistent Incomplete Decision Tables [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2022
In multi-criteria decision making, attribute reduction has attracted the attention of researchers for more than two decades. So far, numerous scientists have proposed algorithms to construct reducts in decision tables.
Dinh Thu Khanh   +3 more
doaj   +1 more source

Theory of sketches for database mappings [PDF]

open access: yesInternational Journal of Intelligent Information and Database Systems, 2015
This paper presents two basic operations, separation and data federation, for database schemas that are used in database mapping systems and explains why functorial semantics for database mappings need a new base category instead of usual Set category.
Zoran Majkic, Bhanu Prasad 0001
openaire   +1 more source

Systematic Literature Review: Theory Perspective in Lean Manufacturing Performance

open access: yesManagement Systems in Production Engineering, 2023
This review examines the trend of applying theories in LM performance and offers the latest recapitulation of related theories in LM performance. The methodology is based on Preferred Reporting Items for Systematic Reviews (PRISMA) to search for multiple
Aripin Norhana Mohd   +5 more
doaj   +1 more source

Short Notice: A Database of Early Modern Police Ordinances.

open access: yesJournal for Digital Legal History, 2022
A shortnotice on a/ the Database of Early Modern Police Ordinances as published by theMax Planck Institute for Legal History and Legal Theory.
Karl Härter
doaj   +1 more source

Coarse Dynamics for Coarse Modeling: An Example From Population Biology

open access: yesEntropy, 2014
Networks have become a popular way to concisely represent complex nonlinear systems where the interactions and parameters are imprecisely known. One challenge is how best to describe the associated dynamics, which can exhibit complicated behavior ...
Justin Bush, Konstantin Mischaikow
doaj   +1 more source

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