نتایج جستجو برای: dsss

تعداد نتایج: 513  

Journal: :Modern Economy 2023

In recent times, the importance of shipping services has been rapidly increasing. As a consequence, companies seek to capitalize on every available strategy and opportunity promote their manage conclude charters. This highlights role digital marketing utilization customer data originating from corporate websites. Moreover, this aim, can utilize various Decision Support Systems (DSSs) available,...

2012
Han-Ting Wei Mu-Hong Chen Po-Cheng Huang Ya-Mei Bai

BACKGROUND Online gaming technology has developed rapidly within the past decade, and its related problems have received increasing attention. However, there are few studies on the psychiatric symptoms associated with excessive use of online games. The aim of this study is to investigate the characteristics of online gamers, and the association between online gaming hours, social phobia, and de...

Journal: :International journal of Computer Networks & Communications 2013

Journal: :Journal of manufacturing and materials processing 2022

Duplex stainless steels (DSSs) have excellent mechanical properties, owing to their austenitic-ferritic microstructure. The phase equilibrium strongly depends on solidification conditions and chemical composition, where elemental nitrogen significantly stabilizes the austenitic phase. When DSSs are processed by laser powder bed fusion (L-PBF) under an argon atmosphere, rapid cooling rates resul...

2006
Marek Natkaniec Andrzej R. Pach

This paper presents a simulation analysis of influence of the physical layer type on the IEEE 802.11 network performance. The throughput and the mean frame delay as functions of offered load for three types of physical layers for different number of stations were studied. This investigation allows us to compare the IEEE 802.11 network performance when using DSSS, FHSS and IR layers.

Journal: :Annales UMCS, Informatica 2011
Jaroslaw Wojtun Zbigniew Piotrowski Piotr Gajewski

The paper presents the results of implementation in the Matlab environment for watermarking embedder and extractor based on the Direct Sequence Spread Spectrum (DSSS). A block diagram of watermarking system, an analysis of watermarked signal reproduced as well as watermarking system robustness to degrading factors: lossy compression, signal-to-noise ratio (SNR) as well as a change in sampling f...

Journal: :The Journal of clinical psychiatry 2001
S M Stahl

BRAINSTORMS is a monthly section of The Journal of Clinical Psychiatry aimed at providing updates of novel concepts emerging from the neurosciences that have relevance to the practicing psychiatrist. From the Neuroscience Education Institute in Carlsbad, Calif., and the Department of Psychiatry at the University of California San Diego. Reprint requests to: Stephen M. Stahl, M.D., Ph.D., Editor...

Journal: :Decision Support Systems 2017
Benjamin Ryder Bernhard Gahr Philipp Egolf André Dahlinger Felix Wortmann

Despite continuous investment in road and vehicle safety, as well as improvements in technology standards, the total amount of road traffic accidents has been increasing over the last decades. Consequently, identifying ways of effectively reducing the frequency and severity of traffic accidents is of utmost importance. In light of the depicted challenge, latest studies provide promising evidenc...

2018
Jay Prakash Chenxi Liu Jemin Lee Tony Q.S. Quek

Direct-sequence spread spectrum (DSSS) has been recognized as an effective jamming resilient technique. However, the effectiveness of DSSS relies on the use of either pre-shared unique secret keys or a bank of public codes, which can be prohibitively expensive in future large-scale decentralized wireless networks, e.g., the Internet of Things. To tackle this problem, in this work we develop a n...

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