Bibliografie tematiche / Switch

Letteratura scientifica selezionata sul tema "Switch"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 31 gennaio 2023

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Articoli di riviste sul tema "Switch"

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HEIKOOP, KARIN W., MATHIEU DECLERCK, SANDER A. LOS e IRING KOCH. "Dissociating language-switch costs from cue-switch costs in bilingual language switching". Bilingualism: Language and Cognition 19, n. 5 (19 aprile 2016): 921–27. http://dx.doi.org/10.1017/s1366728916000456.

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Cued language switching is used to examine language-control processes by comparing performance in language-switch trials with performance in repetition trials. In 1:1 cue-to-language mappings, language repetitions involve cue repetitions and language switches involve cue switches. Hence, the observed switch costs might reflect cue-switch costs rather than language-related control processes. By introducing a 2:1 cue-to-language mapping, we dissociated language switches (cue and language switched vs. cue switched, but language repeated) and cue switches (repeated language, with vs. without switched cue). We found cue-switch costs, but language-related switch costs were substantial, too, presumably reflecting language-control processes in cued language switching.
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BULTENA, SYBRINE, TON DIJKSTRA e JANET G. VAN HELL. "Language switch costs in sentence comprehension depend on language dominance: Evidence from self-paced reading". Bilingualism: Language and Cognition 18, n. 3 (6 giugno 2014): 453–69. http://dx.doi.org/10.1017/s1366728914000145.

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This study investigated two prominent issues in the comprehension of language switches. First, how does language switching direction affect switch costs in sentence context? Second, are switch costs modulated by L2 proficiency and cross-linguistic activation? We conducted a self-paced reading task involving sentences that switched between participants’ L1 Dutch and L2 English. The cognate status of the main verb was manipulated to examine the influence of co-activation on intra-sentential switch costs. The reading times indicated the influence of switch direction: a cost was observed for switches into L2 but not for switches into L1, and the magnitude of the costs was correlated with L2 proficiency, indicating that switch costs in language comprehension depend on language dominance. Verb cognates did not yield a cognate facilitation effect nor did they influence the magnitude of switch costs in either direction. The results are interpreted in terms of an activation account explaining lexical comprehension based on L2 proficiency.
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Li, Junru, Youyou Lu, Yiming Zhang, Qing Wang, Zhuo Cheng, Keji Huang e Jiwu Shu. "SwitchTx". Proceedings of the VLDB Endowment 15, n. 11 (luglio 2022): 2881–94. http://dx.doi.org/10.14778/3551793.3551838.

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Online-transaction-processing (OLTP) applications require the underlying storage system to guarantee consistency and serializability for distributed transactions involving large numbers of servers, which tends to introduce high coordination cost and cause low system performance. In-network coordination is a promising approach to alleviate this problem, which leverages programmable switches to move a piece of coordination functionality into the network. This paper presents a fast and scalable transaction processing system called SwitchTx. At the core of SwitchTx is a decentralized multi-switch in-network coordination mechanism, which leverages modern switches' programmability to reduce coordination cost while avoiding the central-switch-caused problems in the state-of-the-art Eris transaction processing system. SwitchTx abstracts various coordination tasks (e.g., locking, validating, and replicating) as in-switch gather-and-scatter (GaS) operations, and offloads coordination to a tree of switches for each transaction (instead of to a central switch for all transactions) where the client and the participants connect to the leaves. Moreover, to control the transaction traffic intelligently, SwitchTx reorders the coordination messages according to their semantics and redesigns the congestion control combined with admission control. Evaluation shows that SwitchTx outperforms current transaction processing systems in various workloads by up to 2.16X in throughput, 40.4% in latency, and 41.5% in lock time.
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Wagner, Till J. W., e Dominic Vella. "Switch on, switch off: stiction in nanoelectromechanical switches". Nanotechnology 24, n. 27 (13 giugno 2013): 275501. http://dx.doi.org/10.1088/0957-4484/24/27/275501.

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Fleury Veloso da Silveira, Augusto, Felippe dos Santos e Silva, Wanderson Rainer Hilário de Araújo, Darizon Alves de Andrade e Augusto Wohlgemuth Fleury Veloso da Silveira. "Reduced Switch Count Converter For Switched Reluctance Generators". Eletrônica de Potência 13, n. 3 (1 agosto 2008): 177–83. http://dx.doi.org/10.18618/rep.2008.3.177183.

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Gohil, S. "POS0626 MONEY MATTERS: ASSESSING THE VALUE OF THE ADALIMUMAB BIOSIMILAR SWITCH FOR RHEUMATOLOGY PATIENTS". Annals of the Rheumatic Diseases 80, Suppl 1 (19 maggio 2021): 551.2–551. http://dx.doi.org/10.1136/annrheumdis-2021-eular.2566.

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Background:The adalimumab biosimilar switch plan, actioned 2018-19 was one of the most complex of all biologic switches across several specialties. Non-medical switches are considered to ensure the best value medicines are prescribed for patients in line with NICE Technology Appraisals.Objectives:This 2 year follow up review explores the value of the switch for Rheumatology (R) patients in comparison to two other major specialisms; Dermatology (R) and Gastroenterology (G).Methods:403 homecare (HC) patients had been identified as eligible for switch to a citrate containing biosimilar (R;189, G;176, D;38) between April-December 2019. 35 hospital FP10 patients receiving the citrate-free originator biologic were also identified for switch to the citrate containing biosimilar and prescription processing via HC (R; 24, G; 9, D;2). Biosimilar switch information was communicated via patient letters/clinic reviews. FP10 patients also received remote pharmacist telephone support, as part of a PDSA (Plan, Do, Study, Act) quality improvement pilot. Data in regard to switch refusal, treatment cessation, withheld treatment and patient satisfaction ratings for pharmacist phonecalls (1 = unsatisfactory, 5=very satisfied) was documented.Results:235/403 HC patients successfully switched (R;99, G;107, D;29). 64/403 HC patients switched back to the originator (R;47, G;12; D;5). Of the 64 switch back HC patients; 52% = reported lack of efficacy; 27% = injection site pain and 21% = various other factors such as blepharitis, insomnia and hair loss. 38/403 HC patients refused the switch and remained on the originator biologic (R;11, G;27, D;0). 31/403 HC patients switched to an alternative biologic (R;19, G;9, D;3). 32/403 HC patients stopped treatment (R;13, G;19, D;0). Treatment was withheld for 3/403 HC patients (R;0, G;2, D;1). 100% of FP10 patients switched to HC. 31/35 FP10 patients switched to the biosimilar (R; 22, G; 7, D; 2). 3/31 patients switched back to the originator due to lack of efficacy or side effects. 4 patients refused the switch to biosimilar (R;3, G;1, D;0). 89% of patients were very satisfied with the pharmacist telephone support.Conclusion:In summary, 58% of all eligible HC patients switched in comparison to 89% of FP10 patients who received pharmacist telephone support; total cost saving following HC and FP10 switch = £270,000. Rheumatology demonstrated the least success in HC switching (52%) and the highest HC switch back figure (25%). Injection site pain and subjective lack of efficacy appear to be the main reasons for ongoing switch backs. The PDSA project demonstrates that a thorough pharmacist assessment of patient concerns in rationalising the use of a biologic agent versus biosimilar can be valuable for patients. Further cost effective adalimumab biosimilars have recently been launched. This seminal review emphasises the ongoing need for robust critical appraisals of biosimilars, with consideration for both clinical and cost effective parameters, before establishing their placement in treatment pathways.Acknowledgements:Mark Easter, UHCW and Interim Integrated Care System Chief Pharmacist, Hardeep Bagga, Deputy Chief Pharmacist, UHCW Pharmacy Homecare Team and UHCW Specialist Rheumatology, Gastroenterology and Dermatology Clinical Teams.Disclosure of Interests:None declared
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Rosembert, D., A. Malaviya, J. How, J. Tomlison, F. Toh, M. Roe, A. Nightingale et al. "P505 Different failure rates after non-medical switching of 744 patients from adalimumab originator to 2 different adalimumab biosimilars at Cambridge University Hospitals, UK: real-world experience". Journal of Crohn's and Colitis 14, Supplement_1 (gennaio 2020): S438—S439. http://dx.doi.org/10.1093/ecco-jcc/jjz203.634.

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Abstract Background Biosimilar adalimumab became available in the UK in October 2018, with payers introducing a series of measures to drive the adoption of the ‘best value’ adalimumab.1 Consideration of value should include risk of loss of efficacy and adverse reactions, which might drive further biologic switches or ‘reverse switches’ to originator. Managing potential ‘nocebo effect’ requires high levels of patient engagement, whilst the presence or absence of citrate buffer may affect patient-reported discomfort, hence patient treatment perceptions. Methods Patients were switched to 2 different biosimilar adalimumabs, one buffered with citrate (ADA1) and one in a citrate-free buffer (ADA2). The choice of adalimumab biosimilar was made for clinical and economic reasons. Patients were informed of the switch to either ADA1 or ADA2 in advance via letter and at clinic visits. Patients who reported problems after switching were reviewed. Results A total of 744 patients were switched from originator adalimumab (ADA0) to ADA1 or ADA2. Rheumatology and dermatology patients were switched to ADA1, whilst gastroenterology patients were switched to ADA2, except for those with a latex allergy, where ADA1 was used (or ADA2 in a latex-free syringe). A total of 49 (6.6%) patients reported problems and a further switch of drug was judged necessary in 48 (Table 1). Switch failure was significantly more likely with ADA1 than ADA2 (7.7% vs. 1.8%; p = 0.006). The median time to switch failure was 97 days (range 5–196 days). The commonest reason for switch failure was disease flare (23 patients, 48%), followed by injection site pain or reaction (21 patients, 44%). Disease flare and injection site problems were more likely to be reported with ADA1 than ADA2 (flare: 23/583 vs. 0/161, p = 0.008; injection site pain 20/583 vs. 1/161, p = 0.06). For patients reporting disease flare, clinicians tended to select a reverse switch to ADA0, whilst for those with injection site problems, a further switch to a different biosimilar was the preferred approach; both strategies were effective at recapture. Conclusion In the context of an effective patient communication strategy, adalimumab biosimilar switching was associated with overall low rates of patient-reported problems in a large cohort. Despite an identical communication strategy, significantly higher rates of injection site problems and disease flares were seen between 2 different biosimilars, reflected in a higher need for further switches. These differences may impact the cost-effectiveness of any chosen strategy. Reference
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Rahman, Rahnuma, e Supriyo Bandyopadhyay. "The Cost of Energy-Efficiency in Digital Hardware: The Trade-Off between Energy Dissipation, Energy–Delay Product and Reliability in Electronic, Magnetic and Optical Binary Switches". Applied Sciences 11, n. 12 (17 giugno 2021): 5590. http://dx.doi.org/10.3390/app11125590.

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Binary switches, which are the primitive units of all digital computing and information processing hardware, are usually benchmarked on the basis of their ‘energy–delay product’, which is the product of the energy dissipated in completing the switching action and the time it takes to complete that action. The lower the energy–delay product, the better the switch (supposedly). This approach ignores the fact that lower energy dissipation and faster switching usually come at the cost of poorer reliability (i.e., a higher switching error rate) and hence the energy–delay product alone cannot be a good metric for benchmarking switches. Here, we show the trade-off between energy dissipation, energy–delay product and error–probability for an electronic switch (a metal oxide semiconductor field effect transistor), a magnetic switch (a magnetic tunnel junction switched with spin transfer torque) and an optical switch (bistable non-linear mirror). As expected, reducing energy dissipation and/or energy–delay product generally results in increased switching error probability and reduced reliability.
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Lin, Chun-Wei, Chang-Yi Peng e Huang-Jen Chiu. "A Novel Three-Phase Six-Switch PFC Rectifier with Zero-Voltage-Switching and Zero-Current-Switching Features". Energies 12, n. 6 (22 marzo 2019): 1119. http://dx.doi.org/10.3390/en12061119.

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A novel three-phase power-factor-correction (PFC) rectifier with zero-voltage-switching (ZVS) in six main switches and zero-current-switching (ZCS) in the auxiliary switch is proposed, analyzed, and experimentally verified. The main feature of the proposed auxiliary circuit is used to reduce the switching loss when the six main switches are turned on and the one auxiliary switch is turned off. In this paper, a detailed operating analysis of the proposed circuit is given. Modeling and analysis are verified by experimental results based on a three-phase 7 kW rectifier. The soft-switched PFC rectifier shows an improvement in efficiency of 2.25% compared to its hard-switched counterpart at 220 V under full load.
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Soesman, Aviva, e Joel Walters. "Codeswitching within prepositional phrases: Effects of switch site and directionality". International Journal of Bilingualism 25, n. 3 (15 marzo 2021): 747–71. http://dx.doi.org/10.1177/13670069211000855.

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Aims and Research Questions: Codeswitching (CS) was investigated among English-Hebrew bilingual preschool children in a sentence repetition task focusing on switching at different points in prepositional phrases (PPs). We asked the extent to which sentence repetition accuracy differed (1) as a function of the switch site in the PP and (2) as a function of directionality, English-to-Hebrew versus Hebrew-to-English CS. Design/Methodology: English/first language (L1)-Hebrew/second language (L2), sequential bilingual children ( N = 65), ages 5;5–6;5, participated. Thirty-six English and 36 Hebrew stimulus sentences were matched for semantic content and syntax. English stimulus sentences contained switches to Hebrew; Hebrew stimuli contained switches to English. Six ‘switch’ conditions were examined: a single codeswitched noun (N), a determiner–noun switch (DET+N), a codeswitched preposition (P), a preposition–determiner switch (P+DET), a switch of the entire PP (P+DET+N), and a no-switch condition. Data and Analysis: Audio recordings were transcribed and coded. Full sentence repetition was coded as correct/incorrect. The number of errors and the proportion of CS errors were computed. A 6 × 2 repeated-measures analysis of variance examined the effects of switch site within the PP and directionality (L1-to-L2 versus L2-to-L1). Findings/Conclusions: Accuracy was highest for the non-switched, N, and P+DET+N conditions. Accuracy was lowest for DET+N switches in English sentences, and for P switches in Hebrew sentences, and these two conditions showed the highest proportion of CS errors. The findings show evidence for a hierarchy of processing costs and directionality differences, which are interpreted in terms of contrastive typological features, particularly definiteness marking in the two languages, English by a free morpheme, and Hebrew by a bound clitic.
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Tesi sul tema "Switch"

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Abu-Saymeh, Dirar. "CERL-switch : an ATM voice switch /". free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9904832.

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Karimi, Arash. "Switch". Thesis, Umeå universitet, Designhögskolan vid Umeå universitet, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-125887.

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Having been looking in to the subject of future truck interior environment, the first intention was to be inspired of the extreme environment of long haul-age truck driving and improving the user needs. By looking in to the human factors in truck interiors. I wanted to show the benefits of the truck architecture possibilities and recreate it for a new future truck user. By using the main design tools like design research, sketching, full scale projection and quick user testing I could get a quick look into the complexity of current truck driver environment and proceed with developing it further. The final result is a semi-autonomous truck interior that is suited for a new type of future driver. The interior is focused on the user needs and tasks such as; autonomous management of logistics, operating routes with other truck drivers and units, enjoying spare time while not driving and also the possibility to actively taking over the control manually in case of emergency. By separating and dividing the truck interior in different divisions and user modes, such as Operational, Tactical and Strategic, that divides the specific functions above, the architecture can maintain a clear separation between work and leisure for the driver when he or she is driving or not. This way the driver could easily switch between the modes to reduce the cognitive impact of increasing future information cognitive impact, without losing the sense of control and create a safe and comfortable work environment for herself. The concept is based on the knowledge of a flexible future context that is facing the automotive industry by reducing ergonomic impact for the drivers and improving it further through the flexibility to switch between modes.
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Daneshmand, Mojgan. "Multi-Port RF MEMS Switches and Switch Matrices". Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/878.

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Microwave and millimeter wave switch matrices are essential components in telecommunication systems. These matrices enhance satellite capacity by providing full and flexible interconnectivity between the received and transmitted signals and facilitate optimum utilization of system bandwidth. Waveguide and semiconductor technology are two prominent candidates for the realizing such types of switch matrices. Waveguide switches are dominant in high frequency applications of 100 ? 200 GHz and in high power satellite communication. However, their heavy and bulky profile reinforces the need for a replacement. In some applications, semiconductor switches are an alternative to mechanical waveguide switches and utilize PIN diodes to create the ON and OFF states. Although, these switches are small in size, they exhibit poor RF performance and low power handling.

RF MEMS technology is a good candidate to replace the conventional switches and to realize an entire switch matrix. This technology has a great potential to offer superior RF performance with miniaturized dimensions. Because of the advantages of MEMS technology numerous research studies have been devoted to develop RF MEMS switches. However, they are mostly concentrated on Single-Pole Single-Throw (SPST) configurations and very limited work has been performed on MEMS multi-port switches and switch matrices. Here, this research has been dedicated on developing multi-port RF MEMS switches and amenable interconnect networks for switch matrix applications. To explore the topic, three tasks are considered: planar (2D) multi-port RF MEMS switches, 3D multi-port RF MEMS switches, and RF MEMS switch matrix integration.

One key objective of this thesis is to investigate novel configurations for planar multi-port (SPNT), C-type, and R-type switches. Such switches represent the basic building blocks of switch matrices operating at microwave frequencies. An in house monolithic fabrication process dedicated to electrostatic multi-port RF MEMS switches is developed and fine tuned. The measurement results exhibit an excellent RF performance verifying the concept. Also, thermally actuated multi-port switches for satellite applications are designed and analyzed. The switch performance at room condition as well as at a very low temperature of 77K degrees (to resemble the harsh environment of satellite applications) is measured and discussed in detail.

For the first time, a new category of 3D RF MEMS switches is introduced to the MEMS community. These switches are not only extremely useful for high power applications but also have a great potential for high frequencies and millimetre-waves. The concept is based on the integration of vertically actuated MEMS actuators inside 3D transmission lines such as waveguides and coaxial lines. An SPST and C-type switches based on the integration of rotary thermal and electrostatic actuators are designed and realized. The concept is verified for the frequencies up to 30GHz with measured results. A high power test analysis and measurement data indicates no major change in performance as high as 13W.

The monolithic integration of the RF MEMS switch matrix involves the design and optimization of a unique interconnect network which is amenable to the MEMS fabrication process. While the switches and interconnect lines are fabricated on the front side, taking advantage of the back side patterning provides a high isolation for cross over junctions. Two different techniques are adopted to optimize the interconnect network. They are based on vertical three-via interconnects and electromagnetically coupled junctions. The data illustrates that for a return loss of less than -20dB up to 30GHz, an isolation of better than 40dB is obtained. This technique not only eliminates the need for expensive multilayer manufacturing process such as Low Temperature Co-fired Ceramics (LTCC) but also provides a unique approach to fabricate the entire switch matrix monolithically.
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Hadjiahmad, Massoud. "An ATM switch using Starburst packet switch fabric". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0026/MQ34134.pdf.

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Brown, G. J. "Optical switch systems". Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419354.

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Bhuta, Dimple. "Brain Controlled Switch". VCU Scholars Compass, 2012. http://scholarscompass.vcu.edu/etd/2795.

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This study aims at designing and implementing a single channel stand-alone Brain-Controlled Switch (BCS) device, which records the electroencephalography (EEG) signals from the scalp using electrodes, amplifies it, eliminates interferences (associated with the EEG signals) and processes the EEG signals to extract and decode temporal signal features to determine user’s intention of regulating an external switch. The design of our “brain-controlled switch” device is implemented using a bio-potential amplifier and a microcontroller. The bio-potential amplifier amplifies the EEG signals to a level sufficient for processing, eliminates interferences and ensures patient safety. The microcontroller (dsPIC30F4013) digitizes the amplified and conditioned analog EEG signals from the bio-potential amplifier, extracts the desired signal features for decoding and prediction of user’s intention and accordingly operates the external switch. When the user concentrates on an external visual stimulus or performs externally triggered movement (hand movement or motor imagery movement), a reproducible pattern appears in user’s EEG frequency bands. The analysis of these patterns is used to decode and predict user’s intention to operate an external switch. To realize our “brain-controlled switch”, we explored two EEG sources: steady-state visually evoked potentials (SSVEP) and beta rebounds, which are patterns generated in the EEG frequency bands associated with focusing on an external visual stimulus or performing externally triggered movements. In case of SSVEP based brain controlled switch, a repetitive visual stimulus (LED flickering at a specified frequency) was used. When the user concentrates on the flickering LED, a dominant fundamental frequency (equivalent to the flickering frequency) appears in the spectral representation of the EEG signals recorded at occipital lobes. Our microcontroller implemented a digital band pass filter to extract the frequency band containing this fundamental frequency and continuously took an average of the amplitude power every predetermined time interval. Whenever the amplitude average power exceeded the preset power threshold the external switch was turned ON. A healthy subject participated in this study, and it took approximately 3.14 ± 1.81 seconds of active concentration for the subject to turn ON the switch in real time with a false positive rate of 1.17%. In case of beta rebound based brain controlled switch, the subject was instructed to perform a brisk hand movement following an external synchronization signal. Our design focused on the post-movement beta rebound which occurs after the cessation of the movement to operate the external switch. Our microcontroller in this case implemented a digital band pass filter to extract the beta band and continuously took an average of its amplitude power every predetermined time interval. Whenever the amplitude average power exceeded the preset power threshold the external switch was turned ON. It took approximately 12.23 ± 7.39 seconds of active urging time by the subject to turn ON the switch in real time with a false positive rate of 9.33%. Thus we have designed a novel stand-alone BCS device which operates an external switch by decoding and predicting user’s intentions.
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Jomah, Adel M. "Instability in switching systems". Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322593.

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Gribble, Simeon S., e Earl R. Switzer. "SWITCHING TO THE FUTURE OF RANGE COMMUNICATIONS AT EDWARDS AFB". International Foundation for Telemetering, 2001. http://hdl.handle.net/10150/607599.

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Abstract (sommario):
International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada
The Edwards Digital Switch (EDS) provides mission critical voice and time-spaceposition information (TSPI) communication switching capability to the Edwards Test Range. The present system has been in operation for about 10 years. The core of this system is based on widely used commercial-off-the-shelf (COTS) time-slot interchange switches that were designed for a 40-year service life. The application layers of the system, comprising the command/control elements and the communications and user interfaces, were custom developed by the prime contractor to satisfy the performance requirements of the Air Force Flight Test Center (AFFTC). Problems with the current system include difficulty in obtaining replacement items for equipment developed by the prime contractor and higher than expected failure rates for this equipment. Based on experience, the service life for the equipment developed by the prime contractor appears to be about 15 years. Another problem is that lower cost packet switches are taking market share from the more traditional time-slot interchange switches. This factor tends to accelerate the obsolescence of the existing COTS equipment. Solutions are being investigated to update or replace the EDS. One solution is to reuse the existing COTS core equipment and replace the present application layers, preferably with COTS. Another solution is to replace the entire system with COTS or vendormodified COTS hardware and software.
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Dimitrakopoulos, Nikolaos. "Electromagnetic MEMS RF Switch". Thesis, University of Leeds, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485179.

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This thesis describes the design, fabrication and test of an electromagne~ically actuated RF MEMS switch. The actuator was fabricated using two different wafers. The first is steel where the coil is been made with a soft magnetic material forming an inner and an outer pole. On the saine wafer the transmission line and'the beam support are present. Silicon has been used as the second wafer to fabricate the mover. The mover consists of the same soft magnetic material as used for the pot core. The switch contact along with the soft magnet is held by a fixed-fixed SU-8 beam. The mover is finally been released from the silicon wafer and dropped on the actuator using the traditio!1al flip chip method. SU-8 which is a negative tone photoresist has been extensively used in this project. .,- Firstly by using standard lithography methods, it has been patterned to form a mould for the coil. Secondly it provides a dielectric as the transmission line is fabricated on top of it. Then it has been used as a mixture with particles of Iron (Fe) and Nickel (Ni). This soft magnetic composite is used for the inner and outer poles of the pot core and also as the magnet that sits on top of the coilto form the mover. Finally SU-8 forms the fixed-fixed beam and its support underneath. In this work there are a number of combinations presented as far as the device is· concerned. There are 28 ~witches accommodated on a 2 inch wafer. The footprint of each .device is 5x4 mm2 mainly due to the beam length. Microstrip and cpw MEMS switches have been fabricated with the latter using both a series and a shunt configuration. The isolation using a 100 J.1m break between the signal lines was measured to be 44.7 dB although the simulated model estimated 54 dBs at 10 GHz. The insertion loss for a cpw series switch was measured to be 0.38 dB at the same frequency. The switching on and off time of the device was measured to be 7 ms and 1 J.1S respectively. The coil requires a 1.2 A current to actuate the mover from a 50 J.1m distance.
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Youssef, Ahmed H., Stuart A. McNamee e Dalphana Bowman. "DIGITAL SWITCH SUSTAINMENT PROGRAM". International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/607578.

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International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, Nevada
This paper describes the status of the Edwards Digital Switch (EDS) [1] and the success of the Digital Switch Sustainment Program (DSSP); a multi-service program aimed at cost-effective means for providing maintenance and development of an advanced digital switching system. This digital communications switching system is deployed at the mission control centers of Edwards AFB, Eglin AFB, and China Lake Naval Air Warfare Center (NAWC). Each system provides the test ranges with mission-critical voice communications and Time Space Position Information (TSPI) switching. Through user-friendly Graphical User Interfaces (GUIs), the switch provides exceptional resource management of radios, telephones, user positions, secure communications, radars, trackers, 4-wire Ear & Mouth (E&M) devices, subscriber services, and other equipment. Developed using commercial equipment, such as the Lucent Technologies Digital Access and Cross-Connect System (DACS) II, the digital switch can integrate and interface with the technologies of other test ranges and customers. The DSSP sustaining engineering contract, a $10M contract awarded in 1997, is a multi-service effort in supporting cost effective maintenance and enhancement for the systems’ software and hardware. Eglin and China Lake have agreed to participate in a Digital Switch Working Group (DSWG) to ensure that this configuration management is in place and that all players follow the same system migration path. These ranges and other interested ranges that agree to purchase systems off the contract and participate in the working group will continue to derive benefits by reducing overhead and eliminating the duplication of effort involved in separate endeavors.
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Libri sul tema "Switch"

1

ill, Croll Carolyn, a cura di. Switch on, switch off. New York: Crowell, 1989.

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2

ill, Croll Carolyn, a cura di. Switch on, switch off. New York: Harper & Row, 1990.

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3

Weiss, David Cody. Good switch, bad switch. New York: Archway Paperbacks, 1997.

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4

Bayer, William. Switch. London: Coronet, 1994.

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5

McKenzie, Grant. Switch. Toronto: Penguin Canada, 2011.

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Michael, Sean. Switch. Round Rock, TX: Torquere Press Inc., 2012.

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7

McKenzie, Grant. Switch. Rearsby: Clipper Large Print, 2011.

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8

Snow, Carol. Switch. New York: HarperTeen, 2008.

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9

Hart, Megan. Switch. Don Mills, Ont: Harlequin, 2010.

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Heath, Chip. Switch. New York: Broadway Books, 2010.

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Capitoli di libri sul tema "Switch"

1

Nahler, Gerhard. "switch". In Dictionary of Pharmaceutical Medicine, 180. Vienna: Springer Vienna, 2009. http://dx.doi.org/10.1007/978-3-211-89836-9_1375.

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Colhoun, O. "Switch". In Lexikon der Medizinischen Laboratoriumsdiagnostik, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-49054-9_2948-1.

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Weik, Martin H. "switch". In Computer Science and Communications Dictionary, 1697. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_18667.

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Colhoun, O. "Switch". In Springer Reference Medizin, 2246. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-48986-4_2948.

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Terabe, Kazuya, Tsuyoshi Hasegawa, Tomonobu Nakayama e Masakazu Aono. "Invention and Development of the Atomic Switch". In Atomic Switch, 1–15. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34875-5_1.

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Tsuruoka, Tohru, Takeo Ohno, Alpana Nayak, Rui Yang, Tsuyoshi Hasegawa, Kazuya Terabe, James K. Gimzewski e Masakazu Aono. "Artificial Synapses Realized by Atomic Switch Technology". In Atomic Switch, 175–99. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34875-5_10.

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Aguilera, R., K. Scharnhorst, S. L. Lilak, C. S. Dunham, M. Aono, A. Z. Stieg e J. K. Gimzewski. "Atomic Switch Networks for Neuroarchitectonics: Past, Present, Future". In Atomic Switch, 201–43. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34875-5_11.

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Tsuruoka, Tohru, e Masakazu Aono. "A List of Papers Related to the Atomic Switch". In Atomic Switch, 245–66. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34875-5_12.

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Sakamoto, T., M. Miyamura, Y. Tsuji, X. Bai, A. Morioka, R. Nebashi, M. Tada et al. "Pathway to Atomic-Switch Based Programmable Logic". In Atomic Switch, 17–32. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34875-5_2.

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Hihara, H., A. Iwasaki, M. Hashimoto, H. Ochi, Y. Mitsuyama, H. Onodera, H. Kanbara et al. "Atomic Switch FPGA: Application for IoT Sensing Systems in Space". In Atomic Switch, 33–58. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34875-5_3.

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Atti di convegni sul tema "Switch"

1

Allafi, Amer L., Premjeet Chahal, Ranjan Mukherjee e Hassan K. Khalil. "A Control Strategy for Eliminating Bouncing in RF MEMS Switches". In ASME 2016 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/dscc2016-9702.

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RF MEMS switches have many advantages over solid-state switches but their main disadvantage is poor reliability. The reliability problem stems from the impact forces generated at the time of closing of the switch and subsequent bouncing. This paper proposes a feedback control strategy to rapidly close the switch without bouncing. The stiffness of the system is switched between a positive value and a negative value to achieve small rise and setting times with no overshoot. Simulation results are presented to demonstrate the feasibility of the proposed control strategy.
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Choi, Yoonsu, Kieun Kim e Mark G. Allen. "A Magnetically Actuated, Electrostatically Clamped High Current MEMS Switch". In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/mems-23812.

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Abstract MEMS switches based on a dual actuation scheme that simultaneously allows for large standoff heights and low clamping voltages have been fabricated. The switches consist of a magnetically-driven component and an electrostatically-driven component. These devices are based on the use of a transient external magnetic field to bring the actuating portion of the switch (made of electroplated NiFe) close to a dielectric-coated clamping electrode, followed by application of an electrostatic clamping voltage to keep the switch closed. Since the clamping voltage is applied when the switch is closed, this voltage can be relatively small. This approach is particularly attractive for reconfigurable arrays of switches. Arrays of switches are simultaneously closed by the magnetic field generated by an off-substrate magnetic source. Selected switches are clamped by electrostatic force using low voltages to maintain the ON state. With this scheme, reconfigurable patterns on an array of switches are possible. These switches possess a large open state air gap (25–35 μm), and are able to pass high currents in excess of 1 A. The large OFF state impedance, then, allows for their usage in switching applications in reconfigurable aperture antennas.
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Cao, Y., J. Wang, Z. W. Xi, W. R. Nie, X. J. Wang e Q. Ouyang. "Simulation and Experiment of a MEMS Omnidirectional Inertial Switch". In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39737.

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A MEMS omnidirectional inertial switch was designed and fabricated based on non-silicon surface micromachining technology. The switch consists of mass-spring system, flexible radial electrodes and axial electrode. It has omnidirectional sensitivities in a half sphere. The modal analysis of the switch was performed. The system stiffness of the mass-spring system and the response displacement of the mass in all directions under the applied shock acceleration of 450g was obtained by using the FE method, as a result, the switch has good omnidirectional performance and small distributed threshold acceleration. The fabricated switches were tested by a shock test device. The results show that the threshold acceleration of the switches is within the range of 270g to 450g. As an acceleration exceeding the threshold value acting along the X-axis or Z-axis, the switch can be reliably closed and have a long contact time.
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Patton, Steven T., Kalathil C. Eapen e Jeffrey S. Zabinski. "Micro/Nanotribology of RF MEMS Switches". In ASME/STLE 2004 International Joint Tribology Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/trib2004-64351.

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Microelectromechanical systems (MEMS) radio frequency (RF) switches hold great promise in a myriad of commercial, aerospace, and military applications. MEMS switches offer important advantages over current electromechanical and solid state technologies including high linearity, low insertion loss, low power consumption, good isolation, and low cost [1–21]. However, there is little fundamental understanding of the factors determining the performance and reliability of these devices. Our previous work investigated fundamentals of hot-switched direct current (DC) gold (Au) contacts using a modified microadhesion apparatus as a switch simulator [1]. Those experiments were conducted under precisely controlled operating conditions in air at MEMS-scale forces with an emphasis on the role of surface forces and electric current on switch performance, reliability, and durability [1]. Electric current had a profound effect on deformation mechanisms, adhesion, contact resistance (R), and reliability/durability. At low current (1–10 μA), asperity creep and switching induced adhesion were the most important observations, whereas, at high current (1–10 mA), lack of adhesion and switch shorting by nanowire formation were prominent [1].
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Kelley, Christopher R., e Jeffrey L. Kauffman. "Effect of Switching Impulse on Piezoelectric-Based Vibration Reduction With Multiple Patches". In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-91832.

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Abstract Piezoelectric-based vibration reduction has the potential to improve the lifetime and structural integrity of turbomachinery blades by reducing the risk of high-cycle fatigue. Semi-active techniques produce small, self-powered implementations that can meet the strict design requirements for rotating machinery. Most semi-active techniques switch piezoelectric transducers between an open circuit and a shunt circuit in a way that reduces vibration. However, these switches produce a small impulse on the structure due to the electromechanical coupling of the piezoelectric material. Since multiple-mode vibration reduction typically requires distributed sections of piezoelectric material, the switching impulse generated by one transducer may affect others. This study investigates the effect of the switching impulse on the non-switched piezoelectric transducers. Experimental testing shows the switching impulse induces a voltage response at the natural frequencies of the structure, with the strongest responses occurring at modes where both the switched and non-switched piezoelectric transducers have high electromechanical coupling. Furthermore, piezoelectric sections that lack coupling at the excitation frequency of the structure exhibit a more noticeable response to the switching impulse. This response enables remote sensing of switches, which may facilitate wireless coordinated switch timing.
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Cho, J. H., C. D. Richards, D. F. Bahr, R. F. Richards e J. Jiao. "Dynamic Operation of a MEMS Thermal Switch". In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15286.

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In this paper we present the design, fabrication, and characterization of a MEMS thermal switch. Three switch designs are considered: one in which the conductive material is in the form of liquid-metal micro droplets, one in which the conductive material consists of aligned carbon nanotube arrays, and one in which solid silicon contacts are used. The ratio of thermal resistance in the on and off conditions is used to characterize performance. Based on these measurements the switch incorporating liquid-metal droplets is superior to the other two switches. The liquid-metal switch has a thermal resistance off to on ratio of 168 and can provide heating rates of 905 °C/s.
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Bryan, Kaylen J., Mitchell Solomon, Emily Jensen, Christina Coley, Kailas Rajan, Charlie Tian, Nenad Mijatovic et al. "Classification of Rail Switch Data Using Machine Learning Techniques". In 2018 Joint Rail Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/jrc2018-6175.

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Rail switches are critical infrastructure components of a railroad network, that must maintain high-levels of reliable operation. Given the vast number and variety of switches that can exist across a rail network, there is an immediate need for robust automated methods of detecting switch degradations and failures without expensive add-on equipment. In this work, we explore two recent machine learning frameworks for classifying various switch degradation indicators: (1) a featureless recurrent neural network called a Long Short-Term Memory (LSTM) architecture, and (2), the Deep Wavelet Scattering Transform (DWST), which produces features that are locally time invariant and stable to time-warping deformations. We describe both methods as they apply to rail switch monitoring and demonstrate their feasibility on a dataset captured under the service conditions by Alstom Corporation. For multiple categories of degradation types, the baseline models consistently achieve near-perfect accuracies and are competitive with the manual analysis conducted by human switch-maintenance experts.
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"SwitchX virtual protocol interconnect (VPI) switch architecture". In 2012 IEEE Hot Chips 24 Symposium (HCS). IEEE, 2012. http://dx.doi.org/10.1109/hotchips.2012.7476483.

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Sadaf, Shima, Nasser Al-Emadi, Atif Iqbal, Mohammad Meraj e Mahajan Sagar Bhaskar. "A Novel Modified Switched Inductor Boost Converter with Reduced Switch Voltage Stress". In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0090.

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DC-DC power converters are necessary to step-up the voltage or current with high conversion ratio for many applications e.g. photovoltaic and fuel cell energy conversion, uninterruptible power supply, DC microgrid, automobile, high intensity discharged lamp ballast, hybrid vehicle, etc. in order to use low voltage sources. In this project, a modified SIBC (mSIBC) is proposed with reduced voltage stress across active switches. The proposed mSIBC configuration is transformerless and simply derived by replacing one diode of the classical switched inductor structure with an active switch. As a result, mSIBC required low voltage rating active switches, as the total output voltage is shared between two active switches. Moreover, the proposed mSIBC is low in cost, provides higher efficiency and required the same number of components compared to the classical SIBC. The experimental results are presented which validated the theoretical analysis and functionality, and the efficiency of the designed converter is 97.17%. The proposed mSIBC converter provides higher voltage conversion ratio compared to classical converters e.g. boost, buck-boost, cuk, and SEPIC. The newly designed configurations will aid the intermediate power stage between the renewable sources and utility grid or high voltage DC or AC load. Since, the total output voltage is distributed among the two active switches, low voltage rating switches can be employed to design the power circuit of the proposed converter. The classical boost converter or recently proposed switched inductor based boost converter can be replaced by the proposed mSIBC converter in real-time applications such as DC microgrid, DC-DC charger, battery backup system, UPS, EV, an electric utility grid. The proposed power circuitry is cost effective, compact in size, easily diagnostic, highly efficient and reliable.
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Kamiya, Keisuke. "A New Approach for Piezoelectric Switched Shunt Damping on Inductance". In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46435.

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A technique to suppress vibration using piezoelectric elements connected to a shunt circuit is called piezoelectric shunt damping. Many studies on this subject have been reported. Among them a technique called switched shunt damping exists. In switched shunt damping developed so far, a switch is placed in the shunt circuit in series to the piezoelectric element, and is used to switch the shunt circuit from an open circuit to a closed circuit. Depending on the elements used in the shunt circuit, various types of switched shunt damping exist. This paper presents a new approach for switched shunt damping on inductance. The presented shunt circuit is composed of a resistance, an inductance and a switch connected in parallel with the inductance. Thus, when the switch is open the shunt circuit becomes an LR circuit, and when the switch is closed it becomes a resistive circuit. Furthermore, switching is operated based on the charge on the piezoelectric element, so that no sensors to conduct the switching are needed. To check the performance of vibration suppression by the proposed method, numerical simulations and experiments are conducted. The results show that the presented switched shunt damping have high performance of vibration suppression.
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Rapporti di organizzazioni sul tema "Switch"

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Loubriel, G. M., A. Mar, R. A. Hamil, F. J. Zutavern e W. D. Helgeson. Photoconductive semiconductor switches: Laser Q-switch trigger and switch-trigger laser integration. Office of Scientific and Technical Information (OSTI), dicembre 1997. http://dx.doi.org/10.2172/570179.

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Dixon, R., e D. Kushi. Data Link Switching: Switch-to-Switch Protocol. RFC Editor, marzo 1993. http://dx.doi.org/10.17487/rfc1434.

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Murakami, K., e M. Maruyama. A MAPOS version 1 Extension - Switch-Switch Protocol. RFC Editor, giugno 1997. http://dx.doi.org/10.17487/rfc2174.

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Osman, Joseph M. Optical Switch Evaluation. Fort Belvoir, VA: Defense Technical Information Center, gennaio 1996. http://dx.doi.org/10.21236/ada307799.

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Inman, Margaret. Laparoscopic Duodenal Switch. Touch Surgery Simulations, novembre 2021. http://dx.doi.org/10.18556/touchsurgery/2021.s0192.

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Turnquist, David V., e Brian W. Wegner. High Power Switch Design. Fort Belvoir, VA: Defense Technical Information Center, gennaio 1995. http://dx.doi.org/10.21236/ada291608.

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Crespo, Antonio. AlGaN Directional Coupler Switch. Fort Belvoir, VA: Defense Technical Information Center, maggio 2002. http://dx.doi.org/10.21236/ada416184.

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Subramania, Ganapathi Subramanian, John Louis Reno, Brandon Scott Passmore, Tom Harris, Eric Arthur Shaner e Todd A. Barrick. Plasmonic enhanced ultrafast switch. Office of Scientific and Technical Information (OSTI), settembre 2009. http://dx.doi.org/10.2172/973847.

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Skone, Timothy J. Disposal Flowback Water Switch. Office of Scientific and Technical Information (OSTI), gennaio 2018. http://dx.doi.org/10.2172/1559835.

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Skone, Timothy J. Disposal Produced Water Switch. Office of Scientific and Technical Information (OSTI), gennaio 2018. http://dx.doi.org/10.2172/1559836.

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