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Academic literature on the topic 'Signals Of Opportunities'

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Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Signals Of Opportunities"

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Cornwall, Marie, Brayden King, Elizabeth Legerski, Eric Dahlin, and Kendra Schiffman. "Signals or Mixed Signals: Why Opportunities for Mobilization are not Opportunities for Policy Reform." Mobilization: An International Quarterly 12, no. 3 (September 1, 2007): 239–54. http://dx.doi.org/10.17813/maiq.12.3.k6q6303j65h1l432.

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Drawing on political opportunity theory, the theory of legislative logic, and political mediation theory, we hypothesize differential effects of the political environment on the actions of challengers (suffragists) and state actors (legislators) in the women's suffrage movement. We use sequential logistic regression to assess the effects of explanatory variables on two intermediate stages of mobilization and policy change. In the case of challengers, we estimate the likelihood a state-level organization is present in any given legislative year. In the case of state actors, we estimate the likelihood a bill passes one legislative house given the presence of a state-level suffrage organization and that a bill has been introduced. Mixed signals are apparent in that challengers and legislators respond to the same environmental factors differently. Challengers respond to perceived opportunities for change. Legislators seek to enhance their political careers and are responsive to the demands of challengers when they perceive challengers as politically powerful or when social and cultural change signals a demand for policy reform. Legislators, in the end, are much more conservative in their response to the political context.
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Goth, G. "Wireless MAN Standard Signals Next-Gen Opportunities." IEEE Distributed Systems Online 5, no. 8 (August 2004): 4. http://dx.doi.org/10.1109/mdso.2004.20.

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Porter, George. "Direct approach signals green light for equal opportunities." Physics World 6, no. 8 (August 1993): 30–32. http://dx.doi.org/10.1088/2058-7058/6/8/27.

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Jiang, Lei, Ben Woodington, Alejandro Carnicer-Lombarte, George Malliaras, and Damiano G. Barone. "Spinal cord bioelectronic interfaces: opportunities in neural recording and clinical challenges." Journal of Neural Engineering 19, no. 2 (April 1, 2022): 021003. http://dx.doi.org/10.1088/1741-2552/ac605f.

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Abstract Bioelectronic stimulation of the spinal cord has demonstrated significant progress in the restoration of motor function in spinal cord injury (SCI). The proximal, uninjured spinal cord presents a viable target for the recording and generation of control signals to drive targeted stimulation. Signals have been directly recorded from the spinal cord in behaving animals and correlated with limb kinematics. Advances in flexible materials, electrode impedance and signal analysis will allow spinal cord recording (SCR) to be used in next-generation neuroprosthetics. In this review, we summarize the technological advances enabling progress in SCR and describe systematically the clinical challenges facing spinal cord bioelectronic interfaces and potential solutions, from device manufacture, surgical implantation to chronic effects of foreign body reaction and stress–strain mismatches between electrodes and neural tissue. Finally, we establish our vision of bi-directional closed-loop spinal cord bioelectronic bypass interfaces that enable the communication of disrupted sensory signals and restoration of motor function in SCI.
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Safari, Leila, Gianluca Barile, Vincenzo Stornelli, and Giuseppe Ferri. "A Review on VCII Applications in Signal Conditioning for Sensors and Bioelectrical Signals: New Opportunities." Sensors 22, no. 9 (May 8, 2022): 3578. http://dx.doi.org/10.3390/s22093578.

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This study reviews second-generation voltage conveyor (VCII)-based read-out circuits for sensors and bioelectrical signal conditioning from existing literature. VCII is the dual circuit of a second-generation current conveyor (CCII), which provides the possibility of processing signals in the current domain while providing output signals in the voltage form. The scope of this paper is to discuss the benefits and opportunities of new VCII-based read-out circuits over traditional ones and bioelectrical signals. The achieved main benefits compared to conventional circuits are the simpler read-out circuits, producing an output signal in a voltage form that can be directly used, improved accuracy, possibility of gain adjustment using a single grounded resistor, and the possibility of connecting several SiPM sensors to the readout circuit. The circuits studied in this paper include VCII- based read-out circuits suitable for all types of sensors configured in the current-mode Wheatstone bridge (CMWB) topology, the VCII-based read-out circuits solutions reported for silicon photomultiplier, spiral-shaped ultrasonic PVDF and differential capacitive sensors, and, finally, a simple readout circuitry for sensing bioelectrical signals. There are still not many VCII-based readout circuits, and we hope that the outcome of this study will enhance this area of research and inspire new ideas.
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Basu, Shibom, Vincent Olieric, Filip Leonarski, Naohiro Matsugaki, Yoshiaki Kawano, Tomizaki Takashi, Chia-Ying Huang, et al. "Long-wavelength native-SAD phasing: opportunities and challenges." IUCrJ 6, no. 3 (April 1, 2019): 373–86. http://dx.doi.org/10.1107/s2052252519002756.

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Native single-wavelength anomalous dispersion (SAD) is an attractive experimental phasing technique as it exploits weak anomalous signals from intrinsic light scatterers (Z < 20). The anomalous signal of sulfur in particular, is enhanced at long wavelengths, however the absorption of diffracted X-rays owing to the crystal, the sample support and air affects the recorded intensities. Thereby, the optimal measurable anomalous signals primarily depend on the counterplay of the absorption and the anomalous scattering factor at a given X-ray wavelength. Here, the benefit of using a wavelength of 2.7 over 1.9 Å is demonstrated for native-SAD phasing on a 266 kDa multiprotein-ligand tubulin complex (T2R-TTL) and is applied in the structure determination of an 86 kDa helicase Sen1 protein at beamline BL-1A of the KEK Photon Factory, Japan. Furthermore, X-ray absorption at long wavelengths was controlled by shaping a lysozyme crystal into spheres of defined thicknesses using a deep-UV laser, and a systematic comparison between wavelengths of 2.7 and 3.3 Å is reported for native SAD. The potential of laser-shaping technology and other challenges for an optimized native-SAD experiment at wavelengths >3 Å are discussed.
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Liu, Jiao, Guanlong Teng, and Feng Hong. "Human Activity Sensing with Wireless Signals: A Survey." Sensors 20, no. 4 (February 22, 2020): 1210. http://dx.doi.org/10.3390/s20041210.

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Wireless networks have been widely deployed with a high demand for wireless data traffic. The ubiquitous availability of wireless signals brings new opportunities for non-intrusive human activity sensing. To enhance a thorough understanding of existing wireless sensing techniques and provide insights for future directions, this survey conducts a review of the existing research on human activity sensing with wireless signals. We review and compare existing research of wireless human activity sensing from seven perspectives, including the types of wireless signals, theoretical models, signal preprocessing techniques, activity segmentation, feature extraction, classification, and application. With the development and deployment of new wireless technology, there will be more sensing opportunities in human activities. Based on the analysis of existing research, the survey points out seven challenges on wireless human activity sensing research: robustness, non-coexistence of sensing and communications, privacy, multiple user activity sensing, limited sensing range, complex deep learning, and lack of standard datasets. Finally, this survey presents four possible future research trends, including new theoretical models, the coexistence of sensing and communications, awareness of sensing on receivers, and constructing open datasets to enable new wireless sensing opportunities on human activities.
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Gill, Gauravpal S., Yogesh N. V. Reddy, and Venkata M. Alla. "MicroRNAs and Cardiovascular Disease: Small Signals and Big Opportunities!" Indian Journal of Cardiovascular Disease in Women WINCARS 5, no. 01 (February 2020): 15–17. http://dx.doi.org/10.1055/s-0040-1709253.

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Bizzego, Andrea, and Gianluca Esposito. "Acquisition and Processing of Brain Signals." Sensors 21, no. 19 (September 29, 2021): 6492. http://dx.doi.org/10.3390/s21196492.

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Kubiak, Ireneusz. "Digital processing methods of images and signals in electromagnetic infiltration process." Image Processing & Communications 18, no. 1 (March 1, 2013): 5–14. http://dx.doi.org/10.2478/v10248-012-0070-7.

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Abstract The article contains information about the capabilities of electromagnetic infiltration process in case of occurrence of strong interfering signals. As a methods supporting infiltration process used method of digital processing of signals and images in the form of histogram transformations, global and local thresholding of signal amplitudes and logical filters. The material presented in the article shows that risk can arise if the uncontrolled use of the computer. Risks that could decide our safety and security of our data. obtained images. Manipulation of histograms, threshold amplitudes of the emission signal correlated with the classified signals or logical filters highlight the weakness of the security used at the source. The presence of strong interfering signals such as vertical and horizontal synchronization signals blocking measurement receivers, do not prevent the reproduction of classified information. Opportunities of the electromagnetic infiltration in situations of weak compromising emissions occurs are presented in the article.
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Dissertations / Theses on the topic "Signals Of Opportunities"

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Wood, Matthew S. "POPULATION LEVEL CONDITIONS AS SIGNALS OF ENTREPRENEURIAL OPPORTUNITIES: A COGNITVE SYNTHESIS OF THE ENTREPRENEURIAL TRAITS AND POPULATION RATES PERSPECTIVES." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1967890301&sid=2&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Sten, Amanda, and Katja Åström. "Opportunities and barriers for an increased flexibility in residential consumers’ electricity consumption." Thesis, KTH, Energi och klimatstudier, ECS, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-191446.

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I Sverige står hushållen för en stor del av den slutliga elanvändningen och deras konsumtionsmönster bidrar till att skapa höga förbrukningstoppar, särskilt under vintermånaderna när elbehovet är som störst. Om hushållen kunde tänka sig att vara mer flexibla i när de använder el skulle förbrukningstoppar kunna dämpas avsevärt och balansen mellan elproduktion och elanvändning bli lättare att upprätthålla. Idag utnyttjas inte efterfrågeflexibilitet i någon större utsträckning, förutom den från vissa elintensiva industrier. Den flexibla kapacitet enskilda hushåll skulle kunna bidra med är naturligtvis lägre än hos industrier, men sammanslaget skulle hushållskunders flexibilitet kunna ge en substantiell inverkan på elsystemet. Vid låga utetemperaturer finns det en uppskattad potential att genomföra effektjusteringar om cirka 1 400 – 3 100 MW om värmelasten hos drygt hälften av samtliga eluppvärmda hus i Sverige omdisponeras till andra tidpunkter, och ytterligare några hundra MW om drygt hälften av samtliga hushåll i Sverige vore flexibla i när de använder hushållsel. Enligt en studie av Broberg m.fl. (2016) skulle drygt hälften av hushållen i Sverige kunna tänka sig att vara flexibla, beroende på vad flexibel innebär. Hushåll som använder el för uppvärmning kan vara flexibla genom att tillfälligt öka eller minska inomhustemperaturen, eller om de använder el i kombination med något annat uppvärmningssätt – genom att byta energikälla. Justeringen kan även ske automatiskt om uppvärmningssystemet är utrustat med central styrutrustning. Om ett stort antal kunders flexibla laster samlas ihop av en marknadsaktör skulle den totala flexibla lasten kunna säljas som kapacitet på grossistmarknaden för el eller erbjudas som upp- eller nedregleringsbud på reglermarknaden. Studien av Broberg m.fl. (2014) har även analyserat hur stor ekonomisk kompensation hushåll vill ha i utbyte mot att vara flexibla. Sett till den flexibla kapacitet hushållskunders efterfrågeflexibilitet bedöms motsvara, cirka 1 400 – 3 100 MW, är kompensationskraven legitimerade, åtminstone om den flexibla kapaciteten erbjuds på någon marknadsplats för elhandel. Styrtjänster som innebär att elanvändningen automatiskt optimeras efter elpriset kan dock vara dyra idag, vilket innebär att det främst tros vara hushåll med hög elförbrukning som utnyttjar dem och de bör därför subventioneras. En annan form av flexibilitet är att anpassa elanvändningen efter det timvarierande elhandelspriset. Den enda förutsättningen för att konsumenten ska tjäna på en sådan anpassning är att elförbrukningen mäts och debiteras på timbasis, vilket är fallet för de relativt få kunder som har valt att teckna timprisavtal. På grund av att konsumentpriset på el inte varierar särskilt mycket saknas incitament för att kunder ska vilja anpassa sin användning efter priset. Det behövs därför en mer effektiv prissättning som exempelvis förstärker volatiliteten eller gör det dyrare eller billigare att använda el vid vissa tidpunkter.
In Sweden, residential consumers account for a large share of the final electricity consumption. Their consumption patterns pose great impact on the network power peaks, especially during the winter. If residential consumers were more flexible in their consumption, peaks would be alleviated considerably and the balance between electricity supply and demand would more easily be maintained. Today, demand side flexibility is not utilized to any greater extent, except the one from energy intensive industries. De flexible capacity a single household could contribute with is of course less than within industries, but if flexible capacity from a large number of households were bundled up it would provide a considerable impact on the electricity system. At low outdoor temperatures there is an estimated potential to reach power adjustments in the size of 1 400 – 3 100 MW if the heat load in just over half of the electric heated houses in Sweden were displaced, and a few hundred more if residential consumers were flexible in their consumption of domestic electricity. According to a study by Broberg et al (2016) approximately half the population would consider to be flexible in their electricity consumption under the right circumstances. Households that use electricity for heating can be flexible through temporarily adjust the indoor temperature, or – if they heat their homes with electricity in combination with another heat source – by switching heat source. The adjustment can also be automatic if the heating system is equipped with a central control unit. If flexible capacity from a large number of households is bundled up into grid worthy demand response by a market actor, the capacity could be offered as bids on organized electricity markets. The study by Broberg et al (2014) also analysed how much compensation households require in exchange for being flexible. The compensation levels are justified with regard to the flexible capacity that can be gathered form households, 1 400 – 3 100 MW, at least as long as the capacity is sold in an organized electricity market. Services for automatic control of heating systems, where the power output is optimized after the varying electricity price, can be expensive today, which indicates that mainly households with a high electricity consumption utilize them today. Hence, they need to be subsidized. Demand side flexibility can also be to manually change consumption patterns in response to price signals. The only precondition is that the electricity consumption is measured and billed on an hourly basis, which is the case for the relatively few consumers with hourly rate agreements. The volatility of the electricity price is however subdued due to the large share of fixed surcharges, which means there is lack of incentive for consumers to adapt their consumption in response to price variations. Hence, the volatility needs to be amplified through efficient pricing.
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Kohlberg, Marcus, and Lars-Peter Westman. "Advertising product improvement opportunities using segmentation in Video-on-Demand services : A case study of MTG’s opportunities in the shift from television to streaming video." Thesis, KTH, Industriell marknadsföring, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146893.

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More and more people choose to watch television online through online video-on- demand services. For media corporations, such as the Modern Times Group (MTG), this means that video-on-demand will become an increasingly important source of revenue. Because video-on-demand is an online service, advertising products offered therein are in competition with other online advertising products. Currently, MTG’s video-on-demand advertising products are the same as on regular television, meaning they haven’t yet taken advantage of any advertising product development opportunities made possible by Internet technology. The purpose of this thesis is therefore to determine what MTG’s strategy should be to improve the competitiveness and revenue of their video-on-demand advertising products, and what key concerns need to be addressed in order to realize the determined strategy. By request of the commissioner, MTG, possible uses of segmentation to achieve the strategy are studied. The methods used to collect data include multiple interviews both at MTG and at their current advertising customers, as well as web analytics and a questionnaire. Both qualitative and quantitative analysis was used to answer the research questions. Findings suggest that MTG should strive to improve the engagement of their advertising products, through the use of contextual segmentation and self-segmentation. This goes against the current trend in online advertising, where segmentation is primarily used for ad targeting. The reason for not adhering to the trend is that MTG’s advertising customers operate in a television mindset, where ad targeting is of a very limited nature and engagement is of greater perceived value.
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(9189371), Archana Suhas Choudhari. "Surface Soil Moisture Retrieval using Reflectometry of S-band Signals of Opportunities." Thesis, 2020.

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Surface soil moisture is one of the few direct hydrological variables which can be measured. It plays a crucial part in the water cycle, agriculture, drought development, runoff generation, and many other phenomena. Satellite observations from active and passive microwave radiometers are best suited for the retrieval of soil moisture. The relationship between soil dielectric constant and water content is direct and is used to determine the surface soil moisture levels. Active microwave remote sensing techniques measure the energy reflected from target surfaces (ocean, soil, biomass) after transmitting a pulse of microwave energy, whereas passive microwave sensors measure the self-emissions of the target surfaces. The passive missions by ESA's SMOS and NASA's SMAP have demonstrated this technology for remote sensing on a global scale. Global Navigation Satellite System-Reflectometry (GNSS-R) is an alternative approach to the remote sensing of soil moisture, as demonstrated through several airborne and ground-based experiments. The new technique of Signals of Opportunity (SoOp) uses a bistatic radar configuration in which the non-cooperative transmitter already transmits signals designed for communication or navigation. The receiver reuses the reflected energy from the target surface (ocean, soil, biomass), thereby making the digital communication and navigation signal spectrum useful to the remote sensing science community. Several airborne and ground-based experiments have been conducted on the use of digital communication signals, a range of frequencies from P-band to Ku-band, for measurement of ocean surface roughness, wind speed, and soil moisture.
This thesis presents the preliminary results obtained for reflectivity retrievals for the 2017 and 2018 S-band tower-based SoOp field experiment conducted at Purdue's Agronomy Center for Research and Education (ACRE). XM signals were recorded by a sky-facing antenna and an Earth-facing antenna mounted atop a tower. The line-of-sight (direct) signal is captured by the sky-facing antenna and reflected signal from the soil captured by the Earth-facing antenna was used for the ambiguity function of XM transmission. A link budget was used to determine the received signal to noise ratio (SNR). The cross-correlation between the direct and the reflected XM signals was used to estimate reflectivity values. The reflectivity retrievals were compared with the in-situ soil moisture content at 5 cm depth obtained by the HydraProbes. The reflectivity values were also verified by a Signals of Opportunity (SoOp) Coherent Bistatic (SCoBi) simulated model.
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Books on the topic "Signals Of Opportunities"

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J, Goetzl Edward, ed. Neural signaling: Opportunities for novel diagnostic approaches and therapies. Malden [Mass.]: Wiley-Blackwell Pub., 2008.

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A, Neve Kim, ed. Functional selectivity of G protein-coupled receptor ligands: New opportunities for drug discovery. New York, NY: Humana Press, 2009.

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Buchanan, Ben. Mitigating the Cybersecurity Dilemma. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780190665012.003.0009.

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This chapter considers how the cybersecurity dilemma can be mitigated. It considers the ways in which states can act unilaterally to improve their baseline defenses, can form bilateral partnerships with other states, and can take action to signal that they are serious about addressing the problem. These include sending costly signals to other states in order to lend credibility to their professed intentions. In cybersecurity, zero day exploits and encryption policy offer opportunities to send costly signals. The chapter draws on Cold War history to provide conceptual examples for many of these actions.
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Johnsen, Laura L., and Glenn Geher. Fashion as a Set of Signals in Female Intrasexual Competition. Edited by Maryanne L. Fisher. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199376377.013.37.

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Fashion is one tool that women employ to enhance their overall attractiveness to increase mating opportunities and repel competition from other females. This essay first discusses how evolution has shaped the female form and how clothing is used to enhance desirable traits. Additionally, this essay addresses how fashion trends have endured throughout history because they have been continually successful in maintaining women’s attractiveness. Further, the reasons why women… clothing when engaging in competitive strategies such as self-promotion and competitor manipulation is also explored. The second section covers how women’s physiological occurrences influence the way they dress and how males perceive them. Third, this essay delves into the social perceptions and consequences of wearing certain kinds of clothing. It explores how fashion is used to attract and retain mates by enabling a woman to stand out among her potential rivals and/or forcing rivals to back down from pursuing a potential partner.
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inc, International Resource Development, ed. Signal processing market opportunities. Norwalk, Conn., U.S.A. (6 Prowitt St., Norwalk 06855): International Resource Development, 1985.

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Digital Signal Processing Application Opportunities. Era Technology, 1991.

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Moein, Sara. Electrocardiogram Signal Classification and Machine Learning: Emerging Research and Opportunities. IGI Global, 2018.

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Letts, L. Gordon, and Douglas W. Morgan. Inflammatory Processes : : Molecular Mechanisms and Therapeutic Opportunities. Birkhauser Verlag, 2012.

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Almslmany, Amir. Recent Advancements in Airborne Radar Signal Processing: Emerging Research and Opportunities. IGI Global, 2018.

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Inclán, María. Opportunities for Mobilization. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190869465.003.0003.

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This chapter analyzes the development of the Zapatista cycle of protests from 1994 to 2003 in relation to the political opportunities opened to the movement during Mexico’s democratic transition. In particular, it describes to what extent Zapatista protest activity was affected by the four traditional dimensions identified in the literature of political opportunity: (1) negotiating periods, as well as changes in power as signs of openings in the political system at the local and national levels; (2) the timing and competitiveness of elections as measures of the relative vulnerability of political elites; (3) the presence of a potential political ally in power; and (4) the Mexican state’s capacity for repression. The chapter compares the explanatory power of these factors to another factor that the literature has highlighted as a crucial variable for mobilization, namely the availability of a network of preexisting organizations.
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Book chapters on the topic "Signals Of Opportunities"

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Lambrechts, Wynand, and Saurabh Sinha. "Electronic Warfare Optoelectronic Receiver Fundamentals: Applications and Research Opportunities." In Signals and Communication Technology, 101–31. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-47403-8_4.

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Jones, Joseph. "Catalog and Online Retailing: Effects of Signals of Quality and Need for Cognition: An Abstract." In Marketing Opportunities and Challenges in a Changing Global Marketplace, 551–52. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39165-2_229.

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Frank, David, Keyan Fang, and Patrick Fonti. "Dendrochronology: Fundamentals and Innovations." In Stable Isotopes in Tree Rings, 21–59. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92698-4_2.

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AbstractThis chapter overviews long-standing foundations, methods, and concepts of dendrochronology, yet also pays attention to a few related paradigm shifts driven by isotope measurements in tree-rings. The basics of annual ring formation are first reviewed, followed by structural descriptions of tree-rings at the macroscopic-to-microscopic scale including earlywoodandlatewoodin conifers (gymnosperms) and hardwoods (angiosperms), as well as wood anatomical features. Numerous examples of inter-disciplinary applications connected to various tree-ring parameters are provided. With the foundation of tree-rings established, this chapter then describes the process and necessity for crossdating—the process by which each and every ring is assigned to a specific year. Methods and terminology related to field sampling also briefly described. The long-standing paradigm of site selection criteria—well shown to maximize common signals in tree-ring width datasets—is challenged in a brief discussion of newer tree-ring isotope literature demonstrating that robust chronologies with high signal-to-noise ratios can be obtained at non-ecotonal locations. Opportunities for isotope measurements to enable crossdating in otherwise challenging contexts are likewise highlighted. The chapter reviews a conceptual framework to disaggregate tree-ring time-series, with special attention to detrending and standardization methods used to mitigate tree-age/size related noise common to many applications such as dendroclimatic reconstruction. Some of the drivers of long-term trends in tree-ring isotope data such as the increase in the atmospheric concentration of CO2, age/size/height trends, and climate variation are presented along with related debates/uncertainties evident in literature in order to establish priorities for future investigations. The development of tree-ring chronologies and related quality control metrics used to assess the common signal and the variance of tree-ring data are described, along with the limitations in correlation based statistics to determine the robustness of tree-ring datasets particularly in the low frequency domain. These statistical methods will gain relevance as tree-ring isotope datasets increasingly approach sample replications and dataset structures typical for tree-ring width measurements.
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Mohammad, Baker. "Emerging Memory Technology Opportunities and Challenges." In Analog Circuits and Signal Processing, 83–89. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-8881-1_9.

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Wennogle, Lawrence, and Nancy Cusack. "Signal transduction and regulation of gene expression." In Inflammatory Processes: Molecular Mechanisms and Therapeutic Opportunities, 125–28. Basel: Birkhäuser Basel, 2000. http://dx.doi.org/10.1007/978-3-0348-8468-6_13.

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Lehmann, Marco M., Philipp Schuler, Marc-André Cormier, Scott T. Allen, Markus Leuenberger, and Steve Voelker. "The Stable Hydrogen Isotopic Signature: From Source Water to Tree Rings." In Stable Isotopes in Tree Rings, 331–59. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92698-4_11.

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AbstractThe hydrogen isotopic signature (δ2H) of water in trees contains information on plant functional responses to climatic changes and on the origin of the water. This is also true for the non-exchangeable hydrogen isotopic signature (δ2HNE) of plant organic matter, which contains additional physiological and biochemical information that can be dated to specific years if extracted from annual rings of trees. Despite this potential for gaining unique insights from δ2HNEof tree-ring cellulose (δ2HTRC), it has not been widely used compared to other isotope signals, likely due to challenging methodological constraints and interpretations of these isotopic signals. In this chapter, we first summarize hydrogen isotope (2H-) fractionation that occurs between source water and tree rings and review methods (e.g. nitration, equilibration, position-specific applications) and calculations to determine δ2HNE in tree material. Building upon a summary of the current state of knowledge, this chapter also provides an exhaustive synthesis of δ2HTRC papers, applications, and associated data from approximately 180 sites across the globe (paired with modelled precipitation δ2H values and climate data). The data allow us to investigate the hydrological-climatic effects driving δ2HTRC pattern on a global scale, the relationship of hydrogen with oxygen isotopes in the same tree-ring material, as well as the influence of physiological-biochemical effects (e.g., species differences, tree growth) that appear to be more important on local or temporal scales than on a large spatial scales. Thus, when local hydro-climatic influences on source water δ2H can be isolated, δ2HTRC gives novel insights on tree physiological responses to abiotic and biotic stresses. We conclude that the growing constellation of tree-ring metrics, including advancements in 2H-processing (i.e., equilibration techniques allowing rapid determinations of δ2HNE) and further refinements to the understanding of post-photosynthetic 2H-fractionations will together provide many new opportunities to understand past climates and ecophysiology by using δ2H in tree rings.
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Davis, Roger J. "Signal transduction by the JNK group of MAP kinases." In Inflammatory Processes: Molecular Mechanisms and Therapeutic Opportunities, 13–21. Basel: Birkhäuser Basel, 2000. http://dx.doi.org/10.1007/978-3-0348-8468-6_2.

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Jiang, Lijun, and Weizhi Meng. "Smartphone User Authentication Using Touch Dynamics in the Big Data Era: Challenges and Opportunities." In Signal Processing for Security Technologies, 163–78. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-47301-7_7.

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Sunitha Patel, M. S., and S. Srinath. "Soft Computing Approaches for Automotive Image Processing: Opportunities and Challenges." In Advances in Automation, Signal Processing, Instrumentation, and Control, 959–68. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8221-9_89.

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Thangatamilan, M., S. J. Suji Prasad, and S. Vivekanandan. "Smart Agriculture: A Survey on Challenges and Opportunities with Recent Advancements." In Advances in Automation, Signal Processing, Instrumentation, and Control, 1783–93. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8221-9_166.

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Conference papers on the topic "Signals Of Opportunities"

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Redfield, S. "Opportunities for optics in computing." In Twenty-Third Asilomar Conference on Signals, Systems and Computers, 1989. IEEE, 1989. http://dx.doi.org/10.1109/acssc.1989.1200754.

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Stanford, Michael W., and Vincent M. Stanford. "Commodity Sensors, Physiological Signals, Research Opportunities, and Practical Issues." In 2019 IEEE Signal Processing in Medicine and Biology Symposium (SPMB). IEEE, 2019. http://dx.doi.org/10.1109/spmb47826.2019.9037855.

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Srikanth Reddy, D. S., Roopak R. Tamboli, and Soumya Jana. "Universal nonuniform sampling of ECG signals: Opportunities and obstacles." In 2012 5th Biomedical Engineering International Conference (BMEiCON). IEEE, 2012. http://dx.doi.org/10.1109/bmeicon.2012.6465510.

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Linty, Nicola, Mohammad Zahidul H. Bhuiyan, and Martti Kirkko-Jaakkola. "Opportunities and challenges of Galileo E5 wideband real signals processing." In 2020 International Conference on Localization and GNSS (ICL-GNSS). IEEE, 2020. http://dx.doi.org/10.1109/icl-gnss49876.2020.9115573.

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Nikolov, Svetoslav I., Borislav G. Tomov, and Jorgen A. Jensen. "Real-time synthetic aperture imaging: opportunities and challenges." In 2006 Fortieth Asilomar Conference on Signals, Systems and Computers. IEEE, 2006. http://dx.doi.org/10.1109/acssc.2006.355018.

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Backstrom, Tom. "Speech Coding, Speech Interfaces and IOT - Opportunities and Challenges." In 2018 52nd Asilomar Conference on Signals, Systems, and Computers. IEEE, 2018. http://dx.doi.org/10.1109/acssc.2018.8645502.

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Zhang, Zhilin, Bhaskar D. Rao, and Tzyy-Ping Jung. "Compressed sensing for energy-efficient wireless telemonitoring: Challenges and opportunities." In 2013 Asilomar Conference on Signals, Systems and Computers. IEEE, 2013. http://dx.doi.org/10.1109/acssc.2013.6810234.

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Mekki, Neila, Mohamed Hamdi, and Taoufik Aguili. "Chaotic Cryptosystems for Multimedia Transmission Opportunities, Challenge and Limitations." In 2018 15th International Multi-Conference on Systems, Signals & Devices (SSD). IEEE, 2018. http://dx.doi.org/10.1109/ssd.2018.8570655.

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Lvovich, I. Ya, A. P. Preobrazhenskiy, and O. N. Choporov. "Research of Opportunities for Reducing Transmission Errors in Orthogonal Frequency-Division Multiplexing Signals." In 2018 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). IEEE, 2018. http://dx.doi.org/10.1109/icieam.2018.8728763.

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Ng'oma, A., and M. Sauer. "Opportunities and challenges in optical generation and distribution of 60 GHz wireless signals." In 2008 Asia Pacific Microwave Conference. IEEE, 2008. http://dx.doi.org/10.1109/apmc.2008.4958265.

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Reports on the topic "Signals Of Opportunities"

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Bell, Jack, Rik Law, Howell Li, Ben Anderson, and Darcy M. Bullock. New Opportunities for Automated Pedestrian Performance Measures. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317351.

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Pedestrian safety is an important concern when evaluating intersections. Previous literature has shown that exclusive pedestrian phases improve safety, but at the expense of imposing greater pedestrian and motorist delay. However, outside of crash data, there are no easily implementable performance measures for pedestrians at traffic signals. This study proposes two performance metrics: (1) a time-to-jaywalk measure, and (2) the Conflict Occupancy Ratio (COR) for evaluating concurrent pedestrian signal phasing with turning vehicles. The COR quantifies conflicts between turning vehicles and pedestrians in the crosswalk. The COR is based upon a commercially deployed video detection system that correctly identified the presence of pedestrians to within two per cycle in this study. This performance is likely sufficient for the current application, but as the technology matures it will provide a scalable screening tool to identify intersections that have opportunities for capacity adjustments or warrant further direct field investigation.
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Lakkaraju, Kiran, Jonathan Whetzel, and Nathan Fabian. Experiences with SIGNAL: Opportunities and challenges with distributed wargaming. Office of Scientific and Technical Information (OSTI), August 2021. http://dx.doi.org/10.2172/1821850.

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Coyner, Kelley, and Jason Bittner. Automated Vehicles and Infrastructure Enablers: Pavement Markings and Signs. SAE International, May 2022. http://dx.doi.org/10.4271/epr2022011.

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Transportation infrastructure systems serve as the platform for emerging automated vehicle (AV) technologies and, in their current condition, limit the reliability of these new vehicles. Road conditions, lane markings, and signs provide essential guidance and information to both human- and machine-controlled vehicles; however, their condition and placement vary depending on local conditions, practices, and funding. Irregular sign placements and road markings confuse both human and machine drivers and can create unsafe conditions. Still, in the short term, they are the easiest factor to adjust regarding successful AV deployment. Automated Vehicles and Infrastructure Enablers: Pavement Markings and Signsexamines the issues associated with pavement markings and signs in the context of advanced automation. The report focuses on unresolved issues between the AV industry and infrastructure owners and operators and provides opportunities and recommendations for the AV industry and the larger transportation community to address reliability issues.
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Douglas, Gordon, and David Moore. Analyzing the Use and Impacts of Oakland Slow Streets and Potential Scalability Beyond Covid-19. Mineta Transportation Institute, July 2022. http://dx.doi.org/10.31979/mti.2021.2152.

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This report presents the results of a mixed-methods study of the 2020-2022 Oakland Slow Streets program. An official response to the Covid-19 pandemic, the program used signs and temporary barricades to limit thru-traffic on 21 miles of city streets to create more and safer space for walking, cycling, and outdoor recreation. Researchers collected data throughout the summer of 2021 on seven designated slow streets plus one cross street and one control street for each – a total of 21 street segments representing conditions in seven different neighborhoods across Oakland. Data collection comprised in-person passerby counts, observations and photographs of local conditions, and logged traffic speed data. Findings vary widely across study sites. In certain cases, observed slow streets saw less car traffic or more bicycle/pedestrian use than one or both of their comparison streets, and in at least one case the slow street was clearly embraced by the local community and used as planners intended; in others the slow street was no different than neighboring streets. The study draws on these findings to identify local conditions that seem likely to make slow treet treatments more or less successful. However, acknowledging that all neighborhoods deserve safer streets and greater outdoor recreational opportunities, the authors argue that better community outreach must be implemented to ensure areas not predisposed to make full use of slow streets can have the opportunity to do so. The study also makes suggestions regarding the potential for rapid, low-cost bike and pedestrian street safety improvements going forward.
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Douglas, Gordon, and David Moore. Analyzing the Use and Impacts of Oakland Slow Streets and Potential Scalability Beyond Covid-19. Mineta Transportation Institute, July 2022. http://dx.doi.org/10.31979/mti.2022.2152.

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This report presents the results of a mixed-methods study of the 2020-2022 Oakland Slow Streets program. An official response to the Covid-19 pandemic, the program used signs and temporary barricades to limit thru-traffic on 21 miles of city streets to create more and safer space for walking, cycling, and outdoor recreation. Researchers collected data throughout the summer of 2021 on seven designated slow streets plus one cross street and one control street for each – a total of 21 street segments representing conditions in seven different neighborhoods across Oakland. Data collection comprised in-person passerby counts, observations and photographs of local conditions, and logged traffic speed data. Findings vary widely across study sites. In certain cases, observed slow streets saw less car traffic or more bicycle/pedestrian use than one or both of their comparison streets, and in at least one case the slow street was clearly embraced by the local community and used as planners intended; in others the slow street was no different than neighboring streets. The study draws on these findings to identify local conditions that seem likely to make slow treet treatments more or less successful. However, acknowledging that all neighborhoods deserve safer streets and greater outdoor recreational opportunities, the authors argue that better community outreach must be implemented to ensure areas not predisposed to make full use of slow streets can have the opportunity to do so. The study also makes suggestions regarding the potential for rapid, low-cost bike and pedestrian street safety improvements going forward.
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