Relevant bibliographies by topics / WWAL

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'WWAL'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'WWAL.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "WWAL"

1

Cevikcan, Emre, and Mehmet Bulent Durmusoglu. "A novel optimization approach for segmented rabbit chase oriented U-type assembly line design: an application from lighting industry." Assembly Automation 40, no. 3 (May 2, 2020): 483–510. http://dx.doi.org/10.1108/aa-02-2019-0020.

Full text
Abstract:
Purpose Rabbit chase (RC) is used as one of the most effective techniques in manufacturing systems, as such systems have high level of adaptability and increased productivity in addition to providing uniform workload balancing and skill improving environment. In assembly systems, RC inspires the development of walking worker assembly line (WWAL). On the other hand, U-type assembly lines (UALs) may provide higher worker utilization, lower space requirement and more convenient internal logistics when compared to straight assembly lines. In this context, this study aims to improve assembly line performance by generating RC cycles on WWAL with respect to task assignment characteristics of UAL within reasonable walking distance and space requirement. Therefore, a novel line configuration, namely, segmented rabbit chase-oriented U-type assembly line (SRCUAL), emerges. Design/methodology/approach The mathematical programming approach treats SRCUAL balancing problem in a hierarchical manner to decrease computational burden. Firstly, segments are generated via the first linear programming model in the solution approach for balancing SRCUALs to minimize total number of workers. Then, stations are determined within each segment for forward and backward sections separately using two different pre-emptive goal programming models. Moreover, three heuristics are developed to provide solution quality with computational efficiency. Findings The proposed mathematical programming approach is applied to the light-emitting diode (LED) luminaire assembly section of a manufacturing company. The adaptation of SRCUAL decreased the number of workers by 15.4% and the space requirement by 17.7% for LED luminaire assembly system when compared to UAL. Moreover, satisfactory results for the proposed heuristics were obtained in terms of deviation from lower bound, especially for SRCUAL heuristics I and II. Moreover, the results indicate that the integration of RC not only decreased the number of workers in 40.28% (29 instances) of test problems in U-lines, but also yielded less number of buffer points (48.48%) with lower workload deviation (75%) among workers in terms of coefficient of variation. Practical implications This study provides convenience for capacity management (assessing capacity and adjusting capacity by changing the number of workers) for industrial SRCUAL applications. Meanwhile, SRCUAL applications give the opportunity to increase the capacity for a product or transfer the saved capacity to the assembly of other products. As it is possible to provide one-piece flow with equal workloads via walking workers, SRCUAL has the potential for quick realization of defects and better lead time performance. Originality/value To the best of the authors’ knowledge, forward–backward task assignments in U-type lines have not been adapted to WWALs. Moreover, as workers travel overall the line in WWALs, walking time increases drastically. Addressing this research gap and limitation, the main innovative aspect of this study can be considered as the proposal of a new line design (i.e. SRCUAL) which is sourced from the hybridization of UALs and WWAL as well as the segmentation of the line with RC cycles. The superiority of SRCUAL over WWAL and UAL was also discussed. Moreover, operating systematic for SRCUAL was devised. As for methodical aspect, this study is the first attempt to solve the balancing problem for SRCUAL design.
APA, Harvard, Vancouver, ISO, and other styles
2

Rodger, C. J., J. B. Brundell, and R. L. Dowden. "Location accuracy of VLF World-Wide Lightning Location (WWLL) network: Post-algorithm upgrade." Annales Geophysicae 23, no. 2 (February 28, 2005): 277–90. http://dx.doi.org/10.5194/angeo-23-277-2005.

Full text
Abstract:
Abstract. An experimental VLF World-Wide Lightning Location (WWLL) network has been developed through collaborations with research institutions across the globe. The aim of the WWLL is to provide global real-time locations of lightning discharges, with >50% CG flash detection efficiency and mean location accuracy of <10km. While these goals are essentially arbitrary, they do define a point where the WWLL network development can be judged a success, providing a breakpoint for a more stable operational mode. The current network includes 18 stations which cover much of the globe. As part of the initial testing phase of the WWLL the network operated in a simple mode, sending the station trigger times into a central processing point rather than making use of the sferic Time of Group Arrival (TOGA). In this paper the location accuracy of the post-TOGA algorithm WWLL network (after 1 August 2003) is characterised, providing estimates of the globally varying location accuracy for this network configuration which range over 1.9-19km, with the global median being 2.9km, and the global mean 3.4km. The introduction of the TOGA algorithm has significantly improved the location accuracies. The detection efficiency of the WWLL is also considered. In the selected region the WWLL detected ~13% of the total lightning, suggesting a ~26% CG detection efficiency and a ~10% IC detection efficiency. Based on a comparison between all WWLL good lightning locations in February-April 2004, and the activity levels expected from satellite observations we estimate that the WWLL is currently detecting ~2% of the global total lightning, providing good locations for ~5% of global CG activity. The existing WWLL network is capable of providing real-time positions of global thunderstorm locations in its current form.
APA, Harvard, Vancouver, ISO, and other styles
3

Bose, Prasanta, and Xiaoqing Zhou. "WWAC." ACM SIGSOFT Software Engineering Notes 24, no. 2 (March 1999): 127–36. http://dx.doi.org/10.1145/295666.295680.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Rodger, C. J., J. B. Brundell, R. L. Dowden, and N. R. Thomson. "Location accuracy of long distance VLF lightning locationnetwork." Annales Geophysicae 22, no. 3 (March 19, 2004): 747–58. http://dx.doi.org/10.5194/angeo-22-747-2004.

Full text
Abstract:
Abstract. An experimental VLF WorldWide Lightning Location (WWLL) network is being developed to provide realtime locations of cloud to ground lightning discharges occurring throughout the globe. This network has expanded from a limited number of stations in the Western Pacific to its current state of 11 stations, in most longitude sectors, with additional stations planned in the near future. As part of the initial testing phase of the WWLL the network has operated in a simple mode, sending the station trigger times into a central processing point rather than using the sferic Time of Group Arrival (TOGA). During this initial stage, a significant quantity of lightning location data has been collected, some of which is being applied to research questions. In this paper the operation of the WWLL network is described, and the location accuracy of the pre-TOGA WWLL network is characterised. This is performed by contrasting commercial lightning location data from an Australian network, Kattron, over 2 days in January 2002, with 4 WWLL stations covering the same region. It was found that there were 426 matched lightning events, corresponding to lightning discharges with large lightning return stroke peak currents (mean absolute peak current of ~26kA compared with ~12kA for all Kattron events). By considering the random errors in the difference locations between the matching lightning events, an appropriate Gaussian timing error for the WWLL network of receiving stations is determined, and hence an estimate for the global location errors for the existing 11-station network is found. The "worst-case" global location error for the existing network ranges spatially from 7.5–100km, with the global median being 15km, and the global mean 30km. When the TOGA method is implemented, the station timing errors will decrease, allowing for an increase in the location accuracies. Hence, the location accuracy estimates determined in this paper will be very conservative for the future WWLL network employing the TOGA technique. Key words. Meteorology and atmospheric dynamics (lightning, atmospheric electricity, instruments and techniques)
APA, Harvard, Vancouver, ISO, and other styles
5

Lu, Jui-Han, and Ying-Sheng Fang. "Small-size LTE/WWAN monopole antenna with octa-band operation for 4 G mobile phone." International Journal of Microwave and Wireless Technologies 9, no. 3 (March 28, 2016): 665–73. http://dx.doi.org/10.1017/s1759078716000301.

Full text
Abstract:
By introducing a modified F-shaped feeding strip and dual parasitic shorted strips, a small-size wireless wide area network/long-term evolution (WWAN/LTE) printed antenna is proposed and embedded in the 4 G mobile phone with octa-band operation. The operating impedance bandwidths (RL ≥ 6 dB) of 263/1093 MHz can be obtained across the LTE/WWAN bands, respectively. The overall antenna size of the proposed printed monopole antenna (MA) is only 35 × 10 × 0.8 mm3. Meanwhile, this small-size MA provides the measured peak gains and antenna efficiencies of 2.0/3.6 dBi and 80/75% for the LTE/WWAN bands, respectively.
APA, Harvard, Vancouver, ISO, and other styles
6

Sharma, Manish. "Design of multiband circularly/linearly polarized antenna for multiple wireless (WWAN/Bluetooth/WiMAX/WLAN/Downlink Satellite System)." International Journal of Microwave and Wireless Technologies 11, no. 9 (June 24, 2019): 967–74. http://dx.doi.org/10.1017/s1759078719000692.

Full text
Abstract:
AbstractIn this article, a multiband antenna for various wireless communications is proposed for WWAN, Bluetooth, WiMAX, WLAN, and Downlink satellite system. The antenna consists of a radiating patch and a rectangular ground plane with four L-shaped stubs which are embedded as side arms to obtain a resonating band for WWAN (1.9GHz), Bluetooth (2.4 GHz), WiMAX (2.5, 3.5, and 5.5 GHz), and WLAN (5.5 GHz) wireless systems and a C-shaped stub is etched on the radiating patch to obtain a higher WLAN band (2.4, 5.2, and 5.8 GHz) and a satellite downlink system (7.5 GHz). The proposed antenna exhibits circular polarization at WWAN band and linear polarization for remaining applications. Also, the proposed antenna exhibits an omnidirectional radiation pattern.
APA, Harvard, Vancouver, ISO, and other styles
7

Yu, Jian, Hongbiao Gu, Baoming Chi, Weifeng Shan, and Mingyuan Wang. "Visibility Graph Complex Network Analysis on Seismic-Induced Variation in Groundwater Level of Nanxi Well, China." International Journal of Design & Nature and Ecodynamics 15, no. 6 (December 26, 2020): 905–11. http://dx.doi.org/10.18280/ijdne.150616.

Full text
Abstract:
Groundwater level in wells, i.e., well water level (WWL) is an important index in hydrological monitoring during earthquakes. Due to the complex dynamics of groundwater, the WWL might change under seismic actions. This paper attempts to identify the long-term correlation between WWL and earthquakes, and disclose the topological features of groundwater dynamics. Taking Nanxi Well as an example, the authors conducted state space analysis on the raw series and trend of WWL to eliminate interferences like barometric pressure, rainfall, and solid tide, creating the trend time series. Then, the raw series and trend time series were converted into the raw visible graph (VG) network and trend VG network, respectively. Further, the global period was divided into five local time windows, and the two VG networks were compared by global aspect, local aspect, and topological properties of complex networks. The results show that the nodes of high degrees are closely related to the seismic response of the WWL in Nanxi Well; all VG networks are scale free and hierarchical; the seismic response of the WWL in the well is reflected by degree correlation; the community division of raw VG network was basically the same as that of trend VG network. The research findings provide insights to the seismic response of WWL and the dynamic fluctuation of groundwater level.
APA, Harvard, Vancouver, ISO, and other styles
8

Miller, Wolfgang J., and Markus Riegler. "Evolutionary Dynamics of wAu-Like Wolbachia Variants in Neotropical Drosophila spp." Applied and Environmental Microbiology 72, no. 1 (January 2006): 826–35. http://dx.doi.org/10.1128/aem.72.1.826-835.2006.

Full text
Abstract:
ABSTRACT Wolbachia bacteria are common intracellular symbionts of arthropods and have been extensively studied in Drosophila. Most research focuses on two Old Word hosts, Drosophila melanogaster and Drosophila simulans, and does not take into account that some of the Wolbachia associations in these species may have evolved only after their fast global expansion and after the exposure to Wolbachia of previously isolated habitats. Here we looked at Wolbachia of Neotropical Drosophila species. Seventy-one lines of 16 Neotropical Drosophila species sampled in different regions and at different time points were analyzed. Wolbachia is absent in lines of Drosophila willistoni collected before the 1970s, but more recent samples are infected with a strain designated wWil. Wolbachia is absent in all other species of the willistoni group. Polymorphic wWil-related strains were detected in some saltans group species, with D. septentriosaltans being coinfected with at least four variants. Based on wsp and ftsZ sequence data, wWil of D. willistoni is identical to wAu, a strain isolated from D. simulans, but can be discriminated when using a polymorphic minisatellite marker. In contrast to wAu, which infects both germ line and somatic tissues of D. simulans, wWil is found exclusively in the primordial germ line cells of D. willistoni embryos. We report on a pool of closely related Wolbachia strains in Neotropical Drosophila species as a potential source for the wAu strain in D. simulans. Possible evolutionary scenarios reconstructing the infection history of wAu-like Wolbachia in Neotropical Drosophila species and the Old World species D. simulans are discussed.
APA, Harvard, Vancouver, ISO, and other styles
9

Chen, Y. J., G. Y. Chen, H. D. Yeh, and D. S. Jeng. "Estimations of tidal characteristics and aquifer parameters via tide-induced head changes in coastal observation wells." Hydrology and Earth System Sciences 15, no. 5 (May 13, 2011): 1473–82. http://dx.doi.org/10.5194/hess-15-1473-2011.

Full text
Abstract:
Abstract. The groundwater fluctuations due to tidal variations at an observation well in a coastal aquifer can be used to determine the tidal characteristics and aquifer parameters without conducting an aquifer test. In this study, a method, comprised of Jeng et al.'s solution (2005) and simulated annealing (SA) algorithm, is developed to determine the coastal aquifer parameters (hydraulic diffusivity, beach slope, and aquifer thickness) as well as the tidal characteristics (bichromatic-tide amplitudes, bichromatic-tide wave frequencies, and tidal phase lag) from the analysis of the tide-induced well-water-level (WWL) data. The synthetic WWL data generated from Jeng et al.'s solution (2005) with assumed parameter values and field data obtained from Barrenjoey beach, Australia, are analyzed. The estimated parameter values obtained from analyzing synthetic WWL data by the present method show good agreements with the previously assumed parameter values. The parameter estimation procedure may however fail in the case of a large shallow water parameter which in fact violates the constraint on the use of Jeng et al.'s solution (2005). In the analysis of field WWL data, the results indicate that the aquifer parameters estimated from the present method with single or multiple well data are significantly different from those given in Nielsen (1990). Inspecting the observed WWL data and the WWL data predicted from Jeng et al.'s solution (2005) reveals that the present method may provide better estimations for the aquifer parameters than those given in Nielsen (1990).
APA, Harvard, Vancouver, ISO, and other styles
10

Chen, Y. J., G. Y. Chen, H. D. Yeh, and D. S. Jeng. "Estimations of tidal characteristics and aquifer parameters via tide-induced head changes in coastal observation wells." Hydrology and Earth System Sciences Discussions 7, no. 6 (December 3, 2010): 9155–71. http://dx.doi.org/10.5194/hessd-7-9155-2010.

Full text
Abstract:
Abstract. The groundwater fluctuations affected by tidal variations at an observation well in a coastal aquifer can be used to determine the tidal characteristics and aquifer parameters without conducting an aquifer test. In this study, a method, comprised of Jeng et al.'s solution (2005) and simulated annealing (SA) algorithm, is developed to determine the coastal aquifer parameters (namely, hydraulic diffusivity, beach slope, and aquifer thickness) as well as the tidal characteristics (namely, bichromatic-tide amplitudes, bichromatic-tide wave frequencies, and tidal phase lag) from the analysis of the tide-induced well-water-level (WWL) data. Two data sets, i.e., synthetic WWL data generated from Jeng et al.'s solution (2005) with assumed parameter values and field data obtained from Barrenjoey beach in Australia, are analyzed. The estimated parameter values obtained from analyzing synthetic WWL data by the present method show good agreements with the previously assumed parameter values. The parameter estimation procedure may however fail in the case of a large shallow-water parameter which in fact violates the constraint on the use of Jeng et al.'s solution (2005). In the analysis of field WWL data, the results indicate that the estimated aquifer parameters from the present method are significantly different from those given in Nielsen (1990). Inspecting the observed WWL data and the WWL data predicted from Jeng et al.'s solution (2005) reveals that the present method may provide better estimations for the aquifer parameters than those given in Nielsen (1990).
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "WWAL"

1

Jonsson, Johan. "Ökadproduktivitet i en manuell produktion : - en fallstudie på AMB Industri AB." Thesis, Linnéuniversitetet, Institutionen för ekonomistyrning och logistik (ELO), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-64759.

Full text
Abstract:
Detta examensarbete har studerat hur produktionsplaneringen av en manuell produktion/montering kan bli produktivare. Genom empiriskt material från fallföretaget och insamlade av relevant teori presenteras idéer om hur detta kan göras. Två viktiga slutsatser från detta arbete är att företag bör planera sin manuella produktion/montering längre tid i förväg och därmed möjliggöra för fler förutbestämda planeringsregler, det vill säga vilka produkter som produceras/monteras när. Dessa slutsatser har dragits utifrån aktuell och relevant teori om produktionsplanering av manuell produktion. Fokus i arbetet har dock legat på att testa om ett införande av ett Walking Workers Assembly Line - system (WWAL) i den manuella produktionen påverkar produktiviteten. För att testa hur införandet av WWAL påverkar produktiviteten har det i arbetet gjorts ett experiment i en manuell produktions-/monteringslinje, experimentet har bedrivits i flertalet veckor för att säkerställa resultaten. Resultaten från experimentet visar att införandet av ett WWAL-system påverkade produktiviteten positivt, totalt sett. Däremot visade experimentet att olika delar av den manuella produktionen påverkades på olika sätt, i en del av linjen påverkades produktiviteten positivt med cirka 40 procent och i en annan del negativt med cirka 9 procent. Dessa skillnader kan bland annat förklaras av att det uppstod ett så kallat rabbit chase i den ena delen, men inte i den andra. Vidare visar experimentets resultat att kostnaderna för att införa WWAL var noll, vilket står i strid med aktuell relevant teori. Teorin antyder också att det kan vara svårt att lyckas med WWAL när det gäller komplexa produkter, detta motsäges av experimentet som har gjort på en relativt komplex medicinteknisk produkt. Arbetet kommer också fram till slutsatsen att det kan vara viktigare att införa WWAL än att jobba med Lean till 100 procent, denna slutsats bygger till stor del på att införandet av WWAL var kostnadsfritt.
APA, Harvard, Vancouver, ISO, and other styles
2

Carlisle, Jennifer (Jennifer Nicole). "Tavarua : a mobile telemedicine system using WWAN striping." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40524.

Full text
Abstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.
Includes bibliographical references (p. 69-78).
Tavarua is a platform designed to support mobile telemedicine systems over wireless wide area networks, WWANs. It utilizes network striping and other complementary techniques to send uni-directional near real time video and audio data streams from a imobile node to a stationary location. The key technical challenge is transmitting high-bandwidth, loss-sensitive data over multiple low-bandwidth, lossy channels. We overcome these challenges using dynamic adjustment of the encoding parameters and a novel video encoding technique (grid encoding) that minimizes the impact of packet losses. Using five WWAN interfaces, our system reliably and consistently transmits audio and diagnostic quality video, with median PSNR values that range from 33.716dB to 36.670dB, with near real-time latencies. We present a study of the characteristic behavior of WWANs, and a description of our system architecture based in part on the lessons gleaned from that study. Through a set of experiments where we transmit video and audio data from a moving vehicle we evaluate the system, focusing on consistency, reliability, and the quality of the audio and video streams. These experiments demonstrate that we can transmit high quality video and audio in varying conditions and even in the presence of hardware failures.
by Jennifer Carlisle.
S.M.
APA, Harvard, Vancouver, ISO, and other styles
3

Owolabi, Emmanuel Olusegun, and Vivien Ibironke Ibiyemi. "COEXISTENCE OF WLAN AND WWAN IN A NOTEBOOK." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3702.

Full text
Abstract:
A modern notebook can be equipped with several devices of wireless network access technologies, such as Wireless Local Area Network (WLAN), Wireles Wide Area Network (WWAN), Wireless Personal Area Network (WPAN), and radio based navigation systems, such as GNSS (Global Navigation Satellite System). Future mobile devices will have different radio technologies such as Long Term Evolution (LTE), Wideband Code Division Multiple Access (WCDMA) and WLAN transceivers co-existing on the same module that enables such a device to connect to the different radio technologies. With these radio technologies present in the same device, care must be taken to minimize the interference between them. In this master thesis, we analyze the co-existence of WLAN in the 2.4GHz ISM band, GSM 1800MHz/900MHz, and WCDMA FDD in the 800MHz and 2.1GHz band when they are embedded in a notebook. Different coexistence scenarios have been considered during this work, with focus on realistic power levels for the victim system as well as the aggressor system, and the actual antenna coupling measured for different notebooks. These measurements and the realistic power levels computed are results that will be a factor to consider when designing WLAN/WWAN coexistence module. This work is divided into seven major parts. Chapter 1 is an introduction to coexistence, and a description of the different radio access technologies considered. Chapter 2 is the state of the art. This is a brief discussion of previous related work on coexistence. v “ThesisReport” — 2011/6/22 — 13:43 — page vi — #6 Chapter 3 is the problem statement definition describing the research problems and hypothesis. Chapter 4 describes the measurement plan, devices and parameters considered in developing the test environment and the different measurement scenarios. Chapter 5 presents the measurement setup and procedures undertaken in achieving the measurement. Chapter 6 is the result analysis. Chapter 7 presents conclusion and future work.
En modern bärbar dator kan utrustas med flera enheter för trådlös nätverksåtkomst teknik, såsom Wireless Local Area Network (WLAN), Trådlöst Wide Area Network (WWAN), Wireless Personal Area Network (WPAN) och radiobaserade navigationssystem, till exempel GNSS (Global Navigation Satellite System). Framtida mobila enheter kommer har olika radiotekniker som Long Term Evolution (LTE), Wideband Code Division Multiple Access (WCDMA) och WLAN transceivers samexisterande på samma modul som möjliggör en sådan anordning att ansluta till olika radiotekniker. Med dessa radioteknik som finns i samma enhet, man måste vidtas för att minimera störningarna mellan dem. I detta mästare Avhandlingen analyserar vi samexistensen av WLAN i 2,4 GHz ISM band, GSM 1800MHz/900MHz och WCDMA FDD i 800MHz och 2,1 GHz-bandet när de är inbäddade i en anteckningsbok. Olika samexistens scenarier har övervägas under detta arbete, med fokus på realistiska effektnivåer för offret systemet samt angriparen systemet, och det faktiska antennanslutning mäts för olika bärbara datorer. Dessa mätningar och realistiska makten beräknade nivåer resultat som kommer att vara en faktor att beakta när man utformar WLAN / WWAN samexistens modul.
Emmanuel O. Owolabi: +46 73 72 484 53, +234 805 618 2123. Vivien I. Ibiyemi: +46 73 65 943 76.
APA, Harvard, Vancouver, ISO, and other styles
4

Kou, Tzuyung Doug. "Watchful Waiting Active Surveillance in Prostate Cancer Patients a Population-Based Study Using the SEER-Medicare Linked Database." Cleveland, Ohio : Case Western Reserve University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1207309899.

Full text
Abstract:
Thesis (Ph.D.)--Case Western Reserve University, 2008
Title from PDF (viewed on 26 May 2009) Includes abstract Department of Epidemiology and Biostatistics Includes bibliographical references [and appendices] Available online via the OhioLINK ETD Center
APA, Harvard, Vancouver, ISO, and other styles
5

Franceschinelli, Daniella Arruda. "Estudo comparativo dos aspectos de segurança em redes WWAN, WLAN e WPAN." [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/276381.

Full text
Abstract:
Orientador : Ricardo Dahab
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação
Made available in DSpace on 2018-08-03T22:41:04Z (GMT). No. of bitstreams: 1 Franceschinelli_DaniellaArruda_M.pdf: 3740509 bytes, checksum: ea2dbca5dbed86af342ac84113f5ae52 (MD5) Previous issue date: 2003
Resumo: o surgimento e as evoluções das tecnologias wireless proporcionaram maior interesse pela mobilidade, que contribuíram no avanço da comunicação móvel. A crescente utilização das redes sem fios, por um lado, gerou novos negócios nos serviços de comunicação pessoal, mas por outro, trouxe novos problemas relacionados à segurança, tais como a maior exposição dos meios de transmissão e maior complexidade nos processos de autenticação. Este trabalho apresenta inicialmente uma visão geral dos sistemas de redes sem fios GSM, 802.11 e Bluetooth, destacando suas arquiteturas, componentes, funcionalidades e beneficios. Esta apresentação inicial serve como base para discutir os aspectos de segurança nessas redes sem fios e compará-Ios com outras tecnologias existentes no mercado, especialmente quanto aos requisitos de autenticação, confidencialidade, disponibilidade e privacidade
Abstract: The constant evolution 01 wireless technologies have prompted an increasing interest lor mobile computing in general, which in turn have contributed to advancements in mobile communication. If, on one side, wireless networks opened the possibilities for personal service businesses, they also exposed a whole new range 01 serious security issues such as greater exposure 01 the communication media and more complex, and thus more error prone, authentication procedures. This work presents, initially, a broad overview of wireless network systems, specifically GSM, 802.11 and Bluetooth, highlighting its architectures, components, functionalities and positive aspects. This overview is then used as a basis for discussing their security aspects and lor comparing them with other technologies available in the market, specially with regard to authentication, confidentiality and availability
Mestrado
Engenharia de Computação
Mestre em Computação
APA, Harvard, Vancouver, ISO, and other styles
6

Westberg, Jonas. "Faraday modulation spectroscopy : Theoretical description and experimental realization for detection of nitric oxide." Doctoral thesis, Umeå universitet, Institutionen för fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-68649.

Full text
Abstract:
Faraday modulation spectroscopy (FAMOS) is a laser-based spectroscopic dispersion technique for detection of paramagnetic molecules in gas phase. This thesis presents both a new theoretical description of FAMOS and experimental results from the ultra-violet (UV) as well as the mid-infrared (MIR) regions. The theoretical description, which is given in terms of the integrated linestrength and Fourier coefficients of modulated dispersion and absorption lineshape functions, facilitates the description and the use of the technique considerably. It serves as an extension to the existing FAMOS model that thereby incorporates also the effects of lineshape asymmetries primarily originating from polarization imperfections. It is shown how the Fourier coefficients of modulated Lorentzian lineshape functions, applicable to the case with fully collisionally broadened transitions, can be expressed in terms of analytical functions. For the cases where also Doppler broadening needs to be included, resulting in lineshapes of Voigt type, the lineshape functions can be swiftly evaluated (orders of magnitude faster than previous procedures) by a newly developed method for rapid calculation of modulated Voigt lineshapes (the WWA-method). All this makes real-time curve fitting to FAMOS spectra feasible. Two experimental configurations for sensitive detection of nitric oxide (NO) by the FAMOS technique are considered and their optimum conditions are determined. The two configurations target transitions originating from the overlapping Q22(21=2) and QR12(21=2) transitions in the ultra-violet (UV) region (227nm) and the Q3=2(3=2)-transition in the fundamental rotational-vibrational band in the mid-infrared (MIR) region (5.33 µm). It is shown that the implementations of FAMOS in the UV- and MIR-region can provide detection limits in the low ppb range, which opens up the possibility for applications where high detection sensitivities of NO is required.
APA, Harvard, Vancouver, ISO, and other styles
7

PÉREZ, ROJAS ERIKA. "MEMORIA DE EXPERIENCIA LABORAL EN LA EMPRESA WWPL MÉXICO S.A DE C.V EN LAS INSTALACIONES DEL ISEM HOSPITAL GENERAL “DR. FERNANDO QUIROZ GUTIERREZ” VALLE DE CHALCO." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2018. http://hdl.handle.net/20.500.11799/94687.

Full text
Abstract:
El Licenciado en Nutrición es un profesional capaz de brindar atención nutriológica a individuos sanos, en riesgo o enfermos, así como a grupos de los diferentes sectores de la sociedad; de administrar servicios y programas de alimentación y nutrición; de proponer, innovar y mejorar la calidad nutrimental y sanitaria de productos alimenticios. Capaz de integrar, generar y aplicar conocimientos, habilidades y actitudes que permiten su desempeño en los campos profesionales básicos: nutrición clínica, nutrición poblacional, servicios de alimentos, tecnología alimentaria y otros campos transversales como: investigación, educación, administración y consultoría aplicando métodos, técnicas y tecnologías propias de la nutriología y ciencias afines.
APA, Harvard, Vancouver, ISO, and other styles
8

Stenbom, Håkan. "Optimization of Remote ServiceSolution for large installations : Wireless LAN and WAN for ABB Robotics." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-12083.

Full text
Abstract:
This report describes a thesis work carried out at ABB Robotics in Västerås. The objective of this thesis is to find technologies  and equipments  for wireless data transfer  suitable for the present and future needs of ABB Robotics Remote Service for large installations in industrial environments. ABB Robotics has a Remote Service solution to securely gather information from robots, manage alarms and potentially execute remote commands by ABB Robotics. This solution consists of an intelligent Service  Box plugged to the robot. This  Service Box is also connected through GPRS or directly through Internet to create a secure VPN connection to a central Remote Service  server. The Remote Service Box is well  suited  for small customers with  1-10 robots with plug  and play installation, but show limitations at a larger scale of deployment  due to equipment costs,  network and installation complexity. A new Service Box is planned that will accommodate future added functionality to Remote Service. This Service Box will require new network solutions as the added functionality  is depending on a higher bandwidth than the GPRS networks can deliver. I have surveyed most existing  wireless  networking technologies  and  analyzed  them  withrespect  to function, cost and availability which provide a knowledge base that makes it possible to find  suitable  solutions. When the most suitable technologies are identified a survey was performed to find equipments that meet the requirements at the lowest cost. A new hierarchical network topology is proposed  that will lead to cost savings by replacing multiple WAN connections in the present solution with  a network switch and  single WAN connection to Internet. As manufacturers of network equipments for industrial environments are relatively few, alternative solutions were also investigated in order to find the most cost effective solutions. The  proposed  network topology together with the data from the surveys lead to recommendations on using Wi-Fi  in the wireless LAN and  a  3G mobile  network for the WAN connection to Internet, as well as recommendations on alternative network equipments that  potentially  can  lead to substantial savings when the new network solutions are implemented.
APA, Harvard, Vancouver, ISO, and other styles
9

Towner, Ronald H. "f19 wwall ve." 2007. http://hdl.handle.net/10150/214320.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Towner, Ronald H. "f17 wwall ve." 2007. http://hdl.handle.net/10150/214335.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "WWAL"

1

WWA. Warszawa: Fundacja Amondo Films, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Włodarczyk-Makuła, Maria. Zmiany ilościowe WWA podczas oczyszczania ścieków i przeróbki osadów. Cze̜stochowa: Wydawn. Politechniki Częstochowskiej, 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Włodarczyk-Makuła, Maria. Zmiany ilościowe WWA podczas oczyszczania ścieków i przeróbki osadów. Cze̜stochowa: Wydawn. Politechniki Częstochowskiej, 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Ḥarūb, Khālid. al-Islāmīyūn fī Filasṭīn: Qirāʼāt wwa-mawāqif wa-qaḍāyā ukhrá. ʻAmmān: Dār al-Bashīr lil-Nashr wa-al-Tawzīʻ, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Bedingfield, Gary. Baseball's dead of World WWar II: A roster of professional players who died in service. Jefferson, N.C: McFarland & Co., 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Janosz-Rajczyk, Marta. Zmiany ilościowo-jakościowe PCB, WWA i metali ciężkich w kondycjonowanych osadach ściekowych stabilizowanych biochemicznie. Częstochowa: Wydawn. Politechniki Częstochowskiej, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Hall, Gillian. Stages (Wwl). Worldwide Library, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Brett, Simon. Mrs. Pargeter's Point Of Honour (Wwl Mystery) (Wwl Mystery). Worldwide Library, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Havill, Steven F. Scavengers (Wwl Mystery, 482). Worldwide Library, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Linsley, Clyde. Death Spiral (Wwl Mystery). Worldwide Library, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "WWAL"

1

Mohd Hasli, Mohamad Amir Imran, Ahmad Rashidy Razali, Aslina Abu Bakar, Mohd Aminudin Murad, and M. Feroze Akbar J. Khan. "Wideband Monopole Antenna for WWAN Services." In Lecture Notes in Electrical Engineering, 723–33. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24584-3_61.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Cho, Jinsung, and Dae-Young Kim. "Integrating WMAN with WWAN for Seamless Services." In Networking - ICN 2005, 374–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-31956-6_44.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Al-Zuheri, Atiya, Lee Luong, and Ke Xing. "A Framework for the Modelling and Optimisation of a Lean Assembly System Design with Multiple Objectives." In Smart Manufacturing Innovation and Transformation, 96–125. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-5836-3.ch005.

Full text
Abstract:
The newest assembly system is lean assembly, which is specifically designed to respond quickly and economically to the fluctuating nature of the market demands. Successful designs for these systems must be capable of satisfying the strategic objectives of a management in manufacturing company. An example of such systems is the so-called walking worker assembly line WWAL, in which each cross-trained worker travels along the line to carry out all tasks required to complete a job. Design approaches for this system have not been investigated in depth both of significant role in manual assembly process design; productivity and ergonomics. Therefore these approaches have had a limited success in actual applications. This chapter presents an innovative and integrated framework which offers significant potential improvement for productivity and ergonomics requirements in WWAL design. It establishes a systematic approach clearly demonstrating the implementation of a developed framework based on the simultaneous application of mathematical and meta- heuristic techniques.
APA, Harvard, Vancouver, ISO, and other styles
4

Rao, K. R., Zoran S. Bojkovic, and Dragorad A. Milovanovic. "Wireless Networking Standards (WLAN, WPAN, WMAN, WWAN)." In Wireless Multimedia Communications, 99–166. CRC Press, 2018. http://dx.doi.org/10.1201/9781420008227-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

"Wireless Networking Standards (WLAN, WPAN, WMAN, WWAN)." In Wireless Multimedia Communications, 99–166. CRC Press, 2008. http://dx.doi.org/10.1201/9781420008227.ch5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Garg, Vijay K. "Architecture of a Wireless Wide-Area Network (WWAN)." In Wireless Communications & Networking, 193–213. Elsevier, 2007. http://dx.doi.org/10.1016/b978-012373580-5/50041-7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Hansen, Raymond A., Anthony H. Smith, and Julie R. Mariga. "A Wireless Networking Curriculum Model for Network Engineering Technology Programs." In Information Communication Technologies, 1122–29. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-949-6.ch075.

Full text
Abstract:
Wireless networking is experiencing explosive growth, both in market size and the number of new standards and technologies. Effectively educating students, both at the undergraduate and graduate level, with the abilities to evaluate, implement, and integrate wireless networks should be a key part of any information technology (IT) education program for the foreseeable future. The Computer & Information Technology Department (CIT) at Purdue University is in a unique position to fulfill this educational need through its wireless networking curriculum. This curriculum currently offers three courses within the network engineering technology program, covering topics from 802.11 networking to 3G cellular, wireless network security and manage-ment to WWAN technologies. Each course includes trend analysis of wireless networking in order to effectively prepare students for employment in this area. This paper discusses the existing wireless networking curriculum by providing a brief perspective of previous course content and detailing each current course in the areas of prerequisite knowledge, intended audience, course content, and lecture/laboratory integration.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "WWAL"

1

Bose, Prasanta, and Xiaoqing Zhou. "WWAC." In the international joint conference. New York, New York, USA: ACM Press, 1999. http://dx.doi.org/10.1145/295665.295680.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Yıldız, Mert, and Aykut Coşkun. "Wwall." In DIS '19: Designing Interactive Systems Conference 2019. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3301019.3323890.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Shi, C., J. Park, L. Manuel, and M. A. Tognarelli. "A Data-Driven Mode Identification Algorithm for Fatigue Damage Assessment in Instrumented Marine Risers." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-50231.

Full text
Abstract:
A well-established empirical procedure, which we refer to as Weighted Waveform Analysis (WWA), is employed to reconstruct a model riser’s response over its entire length using a limited number of strain measurements. The quality of the response reconstruction is controlled largely by identification of the participating riser response modes (waveforms); hence, mode selection is vital in WWA application. Instead of selecting a set of consecutive riser vibratory modes, we propose a procedure that automatically identifies a set of non-consecutive riser modes that can thus account for higher harmonics in the riser response (at multiplies of the Strouhal frequency). Using temporal data analysis of the discrete time-stamped samples, significant response frequencies are identified on the basis of power spectrum peaks; similarly using spatial data analysis of the sparse non-uniformly sampled data, significant wavenumbers are identified using Lomb-Scargle periodograms. Knowing the riser length, the most important wavenumber is related to a specific mode number; this dominant mode is in turn related to the dominant peak in power spectra based on the temporal data analysis. The riser’s fundamental frequency is estimated as the ratio of the empirically estimated dominant spectral frequency to the dominant mode number. Additional mode numbers are also identified as spectral peak frequencies divided by the fundamental frequency. This mode selection technique is an improvement over similar WWA procedures that rely on a priori knowledge of the risers fundamental frequency or on knowledge of physical properties and assumptions on added mass contributions. At selected target locations, we compare fatigue damage rates, estimated based on the riser response reconstructed using the WWA method with the proposed automated mode selection technique (we refer to this as “improved” WWA) and those based on the “original” WWA method (that relies on a theoretically computed fundamental natural frequency of the riser). In both cases, predicted fatigue damage rates based on the empirical methods and data at various locations (other than the target) are cross-validated against damage rates based directly on measurements at the target location. Results show that the improved WWA method, which empirically estimates the riser’s fundamental natural frequency and automatically selects significant modes of vibration, may be employed to estimate fatigue damage rates quite well from limited strain measurements.
APA, Harvard, Vancouver, ISO, and other styles
4

Shu-Chuan Chen, Jia-Yi Sze, Yi-Chun Chu, and Chen-Shuo Fu. "Reconfigurable LTE/WWAN antenna design." In 2015 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM). IEEE, 2015. http://dx.doi.org/10.1109/iwem.2015.7365035.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Simplot, D., and I. Stojmenovic. "Message from the WWAN Chair." In 24th International Conference on Distributed Computing Systems Workshops, 2004. Proceedings. IEEE, 2004. http://dx.doi.org/10.1109/icdcsw.2004.1283996.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

"Message from the WWAN Chairs." In 25th IEEE International Conference on Distributed Computing Systems Workshops. IEEE, 2005. http://dx.doi.org/10.1109/icdcsw.2005.96.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Lin, Shun-Yun, and Ming-Hong Chen. "WWAN antenna for handset application." In 2017 IEEE International Conference on Computational Electromagnetics (ICCEM). IEEE, 2017. http://dx.doi.org/10.1109/compem.2017.7912725.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Ban, Yong-Ling, and Joshua Le-Wei Li. "Multiband LTE/WWAN phone antennas." In 2015 International Workshop on Antenna Technology (iWAT). IEEE, 2015. http://dx.doi.org/10.1109/iwat.2015.7365267.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ming-Ren Hsu and Kin-Lu Wong. "Ceramic chip antenna for WWAN operation." In 2008 Asia Pacific Microwave Conference. IEEE, 2008. http://dx.doi.org/10.1109/apmc.2008.4958578.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Lai, Shih-Chi, Chi-Ming Chiang, and Chia-Lun Tang. "A low SAR WWAN antenna design." In 2014 International Symposium on Antennas & Propagation (ISAP). IEEE, 2014. http://dx.doi.org/10.1109/isanp.2014.7026657.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "WWAL"

1

Brown, G. N., K. J. Carson, J. R. DesChane, R. J. Elovich, and P. K. Berry. Chemical and radiation stability of a proprietary cesium ion exchange material manufactured from WWL membrane and SuperLig{reg_sign} 644. Office of Scientific and Technical Information (OSTI), September 1996. http://dx.doi.org/10.2172/383552.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'WWAL' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography