Relevant bibliographies by topics / Signal recycling

Academic literature on the topic 'Signal recycling'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 January 2023

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Journal articles on the topic "Signal recycling"

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Raab, Frederick J. "Recycling for a cleaner signal." Nature 351, no. 6322 (May 1991): 98–99. http://dx.doi.org/10.1038/351098a0.

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Freeman, Brian C., and Keith R. Yamamoto. "Continuous recycling: a mechanism for modulatory signal transduction." Trends in Biochemical Sciences 26, no. 5 (May 2001): 285–90. http://dx.doi.org/10.1016/s0968-0004(01)01834-5.

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Thüring, André, R. Schnabel, H. Lück, and K. Danzmann. "Detuned Twin-Signal-Recycling for ultrahigh-precision interferometers." Optics Letters 32, no. 8 (March 19, 2007): 985. http://dx.doi.org/10.1364/ol.32.000985.

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Toh, Wei Hong, Pei Zhi Cheryl Chia, Mohammed Iqbal Hossain, and Paul A. Gleeson. "GGA1 regulates signal-dependent sorting of BACE1 to recycling endosomes, which moderates Aβ production." Molecular Biology of the Cell 29, no. 2 (January 15, 2018): 191–208. http://dx.doi.org/10.1091/mbc.e17-05-0270.

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The diversion of the β-secretase BACE1 from the endo-lysosomal pathway to recycling endosomes is important in the regulation of amyloid beta production. Here we define BACE1 transport from early to recycling endosomes and identify essential roles for the SNX4-mediated, signal-independent pathway and for a signal-mediated, GGA1-dependent pathway.
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Krsmanović, Tamara, Agnes Pawelec, Tobias Sydor, and Ralf Kölling. "Control of Ste6 Recycling by Ubiquitination in the Early Endocytic Pathway in Yeast." Molecular Biology of the Cell 16, no. 6 (June 2005): 2809–21. http://dx.doi.org/10.1091/mbc.e04-10-0941.

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We present evidence that ubiquitination controls sorting of the ABC-transporter Ste6 in the early endocytic pathway. The intracellular distribution of Ste6 variants with reduced ubiquitination was examined. In contrast to wild-type Ste6, which was mainly localized to internal structures, these variants accumulated at the cell surface in a polar manner. When endocytic recycling was blocked by Ypt6 inactivation, the ubiquitination deficient variants were trapped inside the cell. This indicates that the polar distribution is maintained dynamically through endocytic recycling and localized exocytosis (“kinetic polarization”). Ste6 does not appear to recycle through late endosomes, because recycling was not blocked in class E vps (vacuolar protein sorting) mutants (Δvps4, Δvps27), which are affected in late endosome function and in the retromer mutant Δvps35. Instead, recycling was partially affected in the sorting nexin mutant Δsnx4, which serves as an indication that Ste6 recycles through early endosomes. Enhanced recycling of wild-type Ste6 was observed in class D vps mutants (Δpep12, Δvps8, and Δvps21). The identification of putative recycling signals in Ste6 suggests that recycling is a signal-mediated process. Endocytic recycling and localized exocytosis could be important for Ste6 polarization during the mating process.
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Zhang, Xiao-long, Zhe-han Yang, Yuan-yuan Chang, Di Liu, Yun-rui Li, Ya-qin Chai, Ying Zhuo, and Ruo Yuan. "Programmable mismatch-fueled high-efficiency DNA signal converter." Chemical Science 11, no. 1 (2020): 148–53. http://dx.doi.org/10.1039/c9sc05084a.

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Zaliauskiene, Lolita, Sunghyun Kang, Christie G. Brouillette, Jacob Lebowitz, Ramin B. Arani, and James F. Collawn. "Down-Regulation of Cell Surface Receptors Is Modulated by Polar Residues within the Transmembrane Domain." Molecular Biology of the Cell 11, no. 8 (August 2000): 2643–55. http://dx.doi.org/10.1091/mbc.11.8.2643.

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How recycling receptors are segregated from down-regulated receptors in the endosome is unknown. In previous studies, we demonstrated that substitutions in the transferrin receptor (TR) transmembrane domain (TM) convert the protein from an efficiently recycling receptor to one that is rapidly down regulated. In this study, we demonstrate that the “signal” within the TM necessary and sufficient for down-regulation is Thr11Gln17Thr19 (numbering in TM). Transplantation of these polar residues into the wild-type TR promotes receptor down-regulation that can be demonstrated by changes in protein half-life and in receptor recycling. Surprisingly, this modification dramatically increases the TR internalization rate as well (∼79% increase). Sucrose gradient centrifugation and cross-linking studies reveal that propensity of the receptors to self-associate correlates with down-regulation. Interestingly, a number of cell surface proteins that contain TM polar residues are known to be efficiently down-regulated, whereas recycling receptors for low-density lipoprotein and transferrin conspicuously lack these residues. Our data, therefore, suggest a simple model in which specific residues within the TM sequences dramatically influence the fate of membrane proteins after endocytosis, providing an alternative signal for down-regulation of receptor complexes to the well-characterized cytoplasmic tail targeting signals.
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Suzuki, Sho W., Ya-Shan Chuang, Ming Li, Matthew N. J. Seaman, and Scott D. Emr. "A bipartite sorting signal ensures specificity of retromer complex in membrane protein recycling." Journal of Cell Biology 218, no. 9 (July 23, 2019): 2876–86. http://dx.doi.org/10.1083/jcb.201901019.

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Retromer is an evolutionarily conserved protein complex, which sorts functionally diverse membrane proteins into recycling tubules/vesicles from the endosome. Many of the identified cargos possess a recycling signal sequence defined as ØX[L/M/V], where Ø is F/Y/W. However, this sequence is present in almost all proteins encoded in the genome. Also, several identified recycling sequences do not follow this rule. How then does retromer precisely select its cargos? Here, we reveal that an additional motif is also required for cargo retrieval. The two distinct motifs form a bipartite recycling signal recognized by the retromer subunits, Vps26 and Vps35. Strikingly, Vps26 utilizes different binding sites depending on the cargo, allowing retromer to recycle different membrane proteins. Thus, retromer interacts with cargos in a more complex manner than previously thought, which facilitates precise cargo recognition.
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Robertson, Sarah E., Subba Rao Gangi Setty, Anand Sitaram, Michael S. Marks, Robert E. Lewis, and Margaret M. Chou. "Extracellular Signal-regulated Kinase Regulates Clathrin-independent Endosomal Trafficking." Molecular Biology of the Cell 17, no. 2 (February 2006): 645–57. http://dx.doi.org/10.1091/mbc.e05-07-0662.

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Extracellular signal-regulated kinase (Erk) is widely recognized for its central role in cell proliferation and motility. Although previous work has shown that Erk is localized at endosomal compartments, no role for Erk in regulating endosomal trafficking has been demonstrated. Here, we report that Erk signaling regulates trafficking through the clathrin-independent, ADP-ribosylation factor 6 (Arf6) GTPase-regulated endosomal pathway. Inactivation of Erk induced by a variety of methods leads to a dramatic expansion of the Arf6 endosomal recycling compartment, and intracellular accumulation of cargo, such as class I major histocompatibility complex, within the expanded endosome. Treatment of cells with the mitogen-activated protein kinase kinase (MEK) inhibitor U0126 reduces surface expression of MHCI without affecting its rate of endocytosis, suggesting that inactivation of Erk perturbs recycling. Furthermore, under conditions where Erk activity is inhibited, a large cohort of Erk, MEK, and the Erk scaffold kinase suppressor of Ras 1 accumulates at the Arf6 recycling compartment. The requirement for Erk was highly specific for this endocytic pathway, because its inhibition had no effect on trafficking of cargo of the classical clathrin-dependent pathway. These studies reveal a previously unappreciated link of Erk signaling to organelle dynamics and endosomal trafficking.
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Wang, Bin, Zheng You, and Dahai Ren. "Target-assisted FRET signal amplification for ultrasensitive detection of microRNA." Analyst 144, no. 7 (2019): 2304–11. http://dx.doi.org/10.1039/c8an02266f.

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Dissertations / Theses on the topic "Signal recycling"

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Shaddock, Daniel Anthony, and Daniel Shaddock@jpl nasa gov. "Advanced Interferometry for Gravitational Wave Detection." The Australian National University. Faculty of Science, 2001. http://thesis.anu.edu.au./public/adt-ANU20020227.171850.

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In this thesis we investigate advanced techniques for the readout and control of various interferometers. In particular, we present experimental investigations of interferometer configurations and control techniques to be used in second generation interferometric gravitational wave detectors. We also present a new technique, tilt locking, for the readout and control of optical interferometers. ¶ We report the first experimental demonstration of a Sagnac interferometer with resonant sideband extraction (RSE). We measure the frequency response to modulation of the length of the arms and demonstrate an increase in signal bandwidth of by a factor of 6.5 compared to the Sagnac with arm cavities only. We compare Sagnac interferometers based on optical cavities with cavity-based Michelson interferometers and find that the Sagnac configuration has little overall advantage in a cavity-based system. ¶ A system for the control and signal extraction of a power recycled Michelson interferometer with RSE is presented. This control system employs a frontal modulation scheme requiring a phase modulated carrier field and a phase modulated subcarrier field. The system is capable of locking all 5 length degrees of freedom and allows the signal cavity to be detuned over the entire range of possibilities, in principle, whilst maintaining lock. We analytically investigate the modulation/demodulation techniques used to obtain these error signals, presenting an introductory explanation of single sideband modulation/demodulation and double demodulation. ¶ This control system is implemented on a benchtop prototype interferometer. We discuss technical problems associated with production of the input beam modulation components and present several solutions. Operation of the interferometer is demonstrated for a wide range of detunings. The frequency response of the interferometer is measured for various detuned points and we observe good agreement with theoretical predictions. The ability of the control system to maintain lock as the interferometer is detuned is experimentally demonstrated. ¶ Tilt locking, a new technique to obtain an error signal to lock a laser to an optical cavity, is presented. This technique produces an error signal by efficient measurement of the interference between the TEM00 and TEM10 modes. We perform experimental and theoretical comparisons with the widely used Pound-Drever-Hall (PDH) technique. We derive the quantum noise limit to the sensitivity of a measurement of the beam position, and using this result calculate the shot noise limited sensitivity of tilt locking. We show that tilt locking has a quantum efficiency of 80%, compared to 82% for the PDH technique. We present experimental demonstrations of tilt locking in several applications including frequency stabilisation, continuous-wave second harmonic generation, and injection locking of a Nd:YAG slab laser. In each of these cases, we demonstrate that the performance of tilt locking is not the limiting factor of the lock stability, and show that it achieves similar performance to the PDH based system. ¶ Finally, we discuss how tilt locking can be effectively applied to two beam interferometers. We show experimentally how a two beam interferometer typically gives excellent isolation against errors arising from changes in the photodetector position, and experimentally demonstrate the use of tilt locking as a signal readout system for a Sagnac interferometer.
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Conibear, Elizabeth. "Sorting signals for the recycling of the M6P/IGFII receptor." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260480.

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Pan, Yi. "Topics of LIGO Physics: Template Banks for the Inspiral of Precessing, Compact Binaries, and Design of the Signal-Recycling Cavity for Advanced LIGO." Thesis, 2006. https://thesis.library.caltech.edu/2007/1/thesis.pdf.

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In the next decade, the detection of gravitational-wave signals by ground-based laser interferometric detectors (e.g., the Laser Interferometer Gravitational-Wave Observatory, or LIGO) will provide new information on the structure and dynamics of compact objects such as neutron stars (NS) and black holes (BH), both isolated and in binary systems. Efforts to detect the intrinsically weak gravitational-wave signals involve the development of high-quality detectors, the precise modeling of expected signals, and the development of efficient data analysis techniques. This thesis concerns two topics in these areas: methods to detect signals from the inspiral of precessing NS-BH and BH-BH binaries, and the design of the signal-recycling cavity for Advanced LIGO (the second generation LIGO detector).

The detection of signals from the inspiral of precessing binaries using the standard matched filter technique, is complicated by the large number (12 at least) of parameters required to describe the complex orbital-precession dynamics of the binary and the consequent modulations of the gravitational-wave signals. To extract these signals from the noisy detector output requires a discrete bank of a huge number of signal templates that cover the 12-dimensional parameter space; and processing data with all these templates requires computational power far exceeding what is available with current technology. To solve this problem, Buonanno, Chen, and Vallisneri (BCV) proposed the use of detection template families (DTFs) --- phenomenological templates that are capable of mimicking rather accurately the inspiral waveform calculated by the post-Newtonian (PN) approach, while having a simpler functional form to reduce the computational cost. In particular, BCV proposed the so called BCV2 DTF for the precessing-binary inspiral, which has 12 parameters (most of them phenomenological). Of these, 8 are extrinsic parameters that can be searched over analytically, and only four of them are intrinsic parameters that need be searched over in a numerical one-by-one manner. The signal-matching efficiency of the BCV2 DTF has been shown to be satisfactory for signals from comparable mass BH-BH binaries.

In Chapter 2 (in collaboration with Alessandra Buonanno, Yanbei Chen, Hideyuki Tagoshi, and Michele Vallisneri), I test the signal-matching efficiency of the BCV2 DTF for signals from a wide sample of precessing BH-BH and NS-BH binaries that covers the parameter range of interest for LIGO and other ground-based gravitational-wave detectors, and I study the mapping between the physical and phenomenological parameters. My colleagues and I calculate the template-match metric, propose the template-placement strategy in the intrinsic parameter space and estimate the number of templates needed (and thus equivalently the computational cost) to cover the parameter space. We also propose a so called BCV2P DTF that replaces the phenomenological parameters in the BCV2 DTF by physical parameters, which can be used to estimate the actual parameters of the binary that emitted any detected signal.

In Chapters 3 and 4 (in collaboration with Alessandra Buonanno, Yanbei Chen, and Michele Vallisneri), I investigate a physical template family (PTF) suggested by BCV. This PTF uses the most accurate known waveforms for inspiraling, precessing binaries (the adiabatic PN waveforms), formulated using a new precessing convention such that five parameters become extrinsic. PTF has the obvious advantages over the DTFs of a perfect match with target signals, a lower false-alarm rate at fixed threshold, and an ability to directly estimate the physical parameters of any detected signal.

In Chapter 3, we focus on the simpler single-spin binaries in which only four parameters out of nine remain intrinsic. We propose a two-stage scheme to search over the five extrinsic parameters quickly, and investigate the false-alarm statistics in each of the two stages. We define and calculate the metric of the full template space, and the projected metric and average metric of the intrinsic parameter subspace, and use these metrics to develop the method of template placement. Finally, we estimate that the number of templates needed to detect single-spin binary inspirals is within the reach of the current available computational power.

In Chapter 4, we generalize the use of the single-spin PTF to double-spin binaries, based on the fact that most double-spin binaries have similar dynamics to the single-spin ones. Since the PTF in this case is, strictly speaking, only quasi-physical, we test and eventually find satisfactory signal-matching performance. We also investigate, both analytically and numerically, the difference between the single-spin and double-spin dynamics, and gain an intuition into where in the parameter space the PTF works well. We estimate the number of templates needed to cover all BH-BH and NS-BH binaries of interest to ground-based detectors, which turns out to be roughly at the limit of currently available computational power. Since the PTF is not exactly physical for double-spin binaries, it introduces systematic errors in parameter estimation. We investigate these, and find that they are either comparable to or overwhelmed by statistical errors, for events with moderate signal-to-noise ratio. BCV and I are currently systematically investigating parameter estimation with the PTF.

The second part of this thesis concerns the design of the signal-recycling cavity for Advanced LIGO. In the planned Advanced-LIGO-detector upgrades from the first-generation LIGO, a signal-recycling mirror (SRM) is introduced at the dark output port. This SRM forms a signal-recycling cavity (SRC) with the input test masses. This signal-recycling design offers several advantages and brings new physics to LIGO. However, there is a problem in the current design of the SRC: the SRC is nearly degenerate, i.e., it does not distinguish transverse optical modes; and as a result, mode coupling due to mirror deformation will strongly reduce the optical power in the fundamental mode, and thus reduce the signal strength, which is roughly proportional to it.

In Chapter 5, I investigate this problem using a numerical simulation of the propagation of the optical field in an Advanced LIGO interferometer. I find that if the current degenerate design for the SRC is used, there will be a serious and perhaps unattainable constraint on the magnitude of mirror deformations, in order to keep the reduction of signal-to-noise ratio below a few percent. This conclusion is consistent with previous order of magnitude estimates. This constraint poses practical difficulties on the quality of mirror polishing and the control of thermal aberration of the mirrors. Based on my simulation results, for a range of degeneracies of the SRC, I find the optimal level of degeneracy, which minimizes the reduction of signal-to-noise ratio. That optimum is nearly non-degenerate. I also discuss possible modifications to the current design that can achieve this optimal degeneracy.

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Shaddock, Daniel. "Advanced Interferometry for Gravitational Wave Detection." Phd thesis, 2000. http://hdl.handle.net/1885/48188.

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In this thesis we investigate advanced techniques for the readout and control of various interferometers. In particular, we present experimental investigations of interferometer configurations and control techniques to be used in second generation interferometric gravitational wave detectors. We also present a new technique, tilt locking, for the readout and control of optical interferometers. ¶ ...
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Books on the topic "Signal recycling"

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Stefańska, Magdalena, ed. Sustainability and sustainable development. Wydawnictwo Uniwersytetu Ekonomicznego w Poznaniu, 2021. http://dx.doi.org/10.18559/978-83-8211-074-6.

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The aim of this book is to present the most important issues related to sustainable development (SD) and corporate social responsibility (CSR). They are discussed from a macro and micro perspective, both in the form of theoretical foundations of these concepts and practical examples of companies operating in Central and Eastern European countries that have implemented these ideas in their daily operations and translated them into corporate and functional strategies. The book consists of four parts. The first one is theoretical in its assumptions and is devoted to explaining the key concepts of sustainable development (SD) and corporate social responsibility (CSR). The authors describe the determinants of sustainable development in the contemporary world, including the most important ones, such as globalization, climate change, poverty, unlimited consumption, as well as limited access to natural resources - all in relation to the goals of sustainable development. The chapter also discusses the concept of corporate social responsibility (CSR), which is now recognized as the process by which business contributes to the implementation of sustainable development. How sustainable development (SD) and corporate social responsibility (CSR) are incorporated into the organization's strategies and influence the corporate strategy on the corporate and functional areas of the organization is presented in the last chapter of the first part of the e-book. The next part of the e-book helps readers understand the concepts of SD and CSR in the field of organizational strategy - in strategic management, and at the level of functional strategies—marketing, human resources, marketing research, accounting and operational management. The authors explain the reasons why companies need to consider the local and global perspective when setting SDGs, and the existence of potential conflicts within them. Taking into account the area of ​​marketing, the authors point to the increase in environmental and social awareness of all stakeholders, which translates into changes in the criteria for decision-making by managers and risk assessment. The issue of sustainability is also the subject of market research. Companies producing products and services, institutions dealing with environmental or consumer protection, scientists and students conduct many research projects related to, inter alia, much more. How to use secondary data for analysis and how to prepare, conduct, analyze and interpret the results of primary research in that area are discussed in detail in the next chapter of this section. The concept of SD also refers to the basic functions of human resource management (HRM)—recruitment, motivation, evaluation and control. They should take into account SD not only for the efficiency of the organization and long-term economic benefits, but also for ethical reasons. Thanks to the SHRM, the awareness and behavior of the entire organization can strongly express sustainable goals in the planning and implementation of the overall corporate strategy. The growing importance of the idea of ​​SD and the concept of CSR also resulted in the need for accounting and finance to develop solutions enabling the provision of information on the methods and results of implementing these concepts in entities operating on the market. This part of the book also examines manufacturing activities in the context of sustainability. As a result, many problems arise: waste of resources, mismanagement, excessive energy consumption, environmental pollution, use of human potential, etc. The chapter presents such concepts as: zero-waste, lean-manufacturing, six-sigma, circular production, design and recycling products in the life cycle as well as ecological and environmentally friendly production. The next two parts of the e-book contain examples of companies from Central and Eastern Europe that used SD goals in their strategies, questions and tasks for readers.
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Book chapters on the topic "Signal recycling"

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Gennis, Robert B. "The Cell Surface: Receptors, Membrane Recycling and Signal Transduction." In Biomembranes, 323–69. New York, NY: Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4757-2065-5_9.

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Yao, T. "Nicotinamide coenzymes: Enzyme reaction detection and signal amplification by substrate recycling." In Analytical Applications of Immobilized Enzyme Reactors, 231–42. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1310-6_8.

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Bray, Peter. "Modelling Roman Concepts of Copper-Alloy Recycling and Mutability." In Recycling and Reuse in the Roman Economy, 237–64. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198860846.003.0007.

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The potential of copper-alloy objects to be re-melted and recast is a powerful property, allowing them to be reused, reshaped, merged, split, and re-contextualized almost without limit. This profound mutability has significant implications:. identifying and quantifying recycling is a notorious and significant challenge, at least within the framework of the ‘provenance hypothesis’, which aims to establish a direct link between a chemical or isotopic signature of an artefact and its original ore source. This chapter proposes alternative approaches to chemical data—a ‘characterization hypothesis’. Rather than chemically identifying a separate block of ‘recycled metal’, we can instead define a series of overlapping processes of metal melting, mixing, and manipulation. Instead of replacing the search for a provenance signal with one for a recycling signal, we should instead embrace the intricacies of the archaeological and chemical record. This complexity more accurately represents the multifaceted Roman relationship with copper and its alloys.
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Andersson, Nils. "Spinning stars and cosmic recycling." In Gravitational-Wave Astronomy, 105–24. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198568032.003.0006.

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This chapter considers the relevance of rotating stars as gravitational-wave sources, introducing the notion of a deformed spinning star and estimating the associated gravitational-wave strength through the quadrupole formula. The estimates are compared to the observed spin-down rate for the Crab Pulsar, providing a first idea of how faint these signals are likely to be. Additional physics that must be considered for accreting systems is introduced and a simple model for the spin–orbit evolution of such systems is outlined.
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"Case Study 4: Material Recovery and Recycling Processing Facilities." In Lean Six Sigma for Engineers and Managers, 189–204. CRC Press, 2015. http://dx.doi.org/10.1201/b18234-19.

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Gobbis Pagliuca, José Carlos, and Marta C. R. B. Suarez. "Used Cooking Oil Campaign Experience in São Bernardo do Campo City." In Cases on Applying Knowledge Economy Principles for Economic Growth in Developing Nations, 254–59. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-8417-0.ch013.

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Faced with the objective of carrying out environmental education campaigns and arousing the attention of Sao Bernardo do Campo´s residents to the correct disposal of used cooking oil, in 2019 a cooperation agreement between the Municipality of Sao Bernardo do Campo and the Triangulo Institute aiming at recycling used cooking oil was signed. The collection execution began with the installation of the used cooking oil voluntary delivery points. Before the installation, the awareness and training of the team involved in the receiving activity was carried out; in addition, it is important after the collection to pack, transport, and dispose of the oil.
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Mushiri, Tawanda, and Emmison Gocheki. "Design of a Garbage Collection Robot." In Advances in Computational Intelligence and Robotics, 90–169. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9924-1.ch004.

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The Arduino is programmed to control the robot navigation. The Garbage Collection Robot is designed to collect solid waste at public places (schools, workplaces, and parks) and residential areas. The design of the robot is such that when it starts, it maneuvers as per programmed route. The Garbage Collector can sense by means of capacitive proximity sensors if the obstacle is living (for example, a human being) or non-living (for example, vehicle) and then gives appropriate warning signals like flashing light, hoot, or voice commands. The robot is equipped with vision capabilities in order for it to detect colors, namely green, red, yellow, blue, and black for organics, plastic, metal, paper, and glass, respectively. When the GCR sees a particular color code on garbage container, it picks up the bin, carries it in its carriage, then offloads it at a desired station to wait for recycling or final dumping.
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Benarroch, Eduardo E. "Organization of Cell Membranes." In Neuroscience for Clinicians, edited by Eduardo E. Benarroch, 17–31. Oxford University Press, 2021. http://dx.doi.org/10.1093/med/9780190948894.003.0002.

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Cell membranes are lipid bilayers that separate cells from their environment and also define different compartments within the cell. Cell membranes are composed of lipids and proteins. The main membrane lipids are phospholipids, sphingolipids, and cholesterol. They determine the biophysical properties of the membrane and its compartmentalization into domains called lipid rafts. Phospholipids and sphingolipids are also the source metabolites that mediate intracellular or intercellular signaling. There is a dynamic exchange of lipid components between the plasma membrane and the different intracellular membranous organelles. Membrane proteins contain domains that interact with the lipid bilayer; they include transporters, ion channel, receptors, and adhesion molecules that have a crucial role in cell physiology and cell–cell interactions. These proteins have a selective distribution in different functional domains of the membrane and undergo dynamic recycling in response to neuronal activity and other signals. Maintenance of the functional integrity of cell membranes is critical for cell function and survival. Disorders of membrane lipids or proteins provide the basis for a large number of neurologic disorders.
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Nowak, Dariusz. "Sustainable development in production-operations management." In Sustainability and sustainable development, 151–71. Wydawnictwo Uniwersytetu Ekonomicznego w Poznaniu, 2021. http://dx.doi.org/10.18559/978-83-8211-074-6/ii7.

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Production-operation activity is one of the most important functions of modern enterprises. It requires the involvement of various types of resources, such as: raw materials, materials, machines, capital, information, energy, human factor and others, which are used in production processes. However, many problems arise in operational activity. They concern such aspects as: waste of resources or their wasteful use, mismanagement, excessive energy consumption, environmental pollution, exploitation of human potential, etc. It is also emphasized that these problems are reflected both in the growing costs of a company’s activities and in climate change. However, more and more companies are becoming aware of these dangers and are implementing new products, new technologies and processes that use less raw materials and energy, being more environmentally-friendly. The purpose of implementing new solutions of production is to improve labour mobility, optimise the use of raw materials and resources, reduce costs, and to increase efficiency, productivity, etc. Taking the impact of operating activities on the environment into account, the purpose of this chapter is to present selected production methods from their cognitive aspects, the assumptions of which are consistent with the issues of sustainable development. In particular, focus was placed on the zero-waste concept, which allows to eliminate waste in all links of the value chain. Lean manufacturing and six sigma, which help enterprises fight waste in their activity, as well as circular production related to the implementation of closed-loop production principles in practice, are discussed. In addition, the life-cycle product design and recycling, as well as green and environment-conscious manufacturing are presented. The first of them assumes that the possibility of recycling should be considered in the process of designing products and services. The second one should be identified with a modern and systemic way of managing enterprises, taking all environmental aspects into account by all departments.
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Conference papers on the topic "Signal recycling"

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Martino, Luca, Victor Elvira, and Gustau Camps-Valls. "Recycling Gibbs sampling." In 2017 25th European Signal Processing Conference (EUSIPCO). IEEE, 2017. http://dx.doi.org/10.23919/eusipco.2017.8081191.

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Ichikawa, Osamu, Steven J. Rennie, Takashi Fukuda, and Masafumi Nishimura. "Channel-mapping for speech corpus recycling." In ICASSP 2013 - 2013 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2013. http://dx.doi.org/10.1109/icassp.2013.6639052.

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Al-rababa'a, Ahmad, and Danny Dube. "Adaptation of bit recycling to arithmetic coding." In 2013 8th InternationalWorkshop on Systems, Signal Processing and their Applications (WoSSPA). IEEE, 2013. http://dx.doi.org/10.1109/wosspa.2013.6602411.

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Harmer, Brian, and Banmali S. Rawat. "Development of the concept of recycling of light." In 2015 International Conference on Signal Processing and Communication (ICSC). IEEE, 2015. http://dx.doi.org/10.1109/icspcom.2015.7150613.

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Le Thu Nguyen, Thi, Francois Septier, Gareth W. Peters, and Yves Delignon. "Improving SMC sampler estimate by recycling all past simulated particles." In 2014 IEEE Statistical Signal Processing Workshop (SSP). IEEE, 2014. http://dx.doi.org/10.1109/ssp.2014.6884589.

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Ahmad, N. A. B., N. A. Cholan, and S. H. Dahlan. "Numerical analysis of signal recycling in multiwavelength Brillouin-erbium fiber laser." In 2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR). IEEE, 2017. http://dx.doi.org/10.1109/cleopr.2017.8119027.

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Byard, C., T. Graham, A. Jordan, and P. Kwiat. "Using Recycling to Increase the Signal-to-Noise Ratio in Weak Measurements." In Quantum Information and Measurement. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/qim.2014.qth4a.3.

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Liaw, S. K., Y. C. Wang, Y. L. Yu, R. Y. Liu, and F. P. Payne. "Bidirectional hybrid fiber amplifiers in a recycling-pump mechanism." In 2012 8th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP 2012). IEEE, 2012. http://dx.doi.org/10.1109/csndsp.2012.6292719.

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Al-Rababa'a, Ahmad, Canada Universite Laval, and Danny Dube. "A finite-precision adaptation of bit recycling to arithmetic coding." In 2015 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT). IEEE, 2015. http://dx.doi.org/10.1109/isspit.2015.7394382.

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Hafez, Tamer F., Ali Badawey Ali, Rehab S. Ali, and Nadia Abd-Alsabour. "IT and Developing Countries With a Case Study of Recycling." In 2018 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET). IEEE, 2018. http://dx.doi.org/10.1109/wispnet.2018.8538623.

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Reports on the topic "Signal recycling"

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Rezaie, Shogofa, Fedra Vanhuyse, Karin André, and Maryna Henrysson. Governing the circular economy: how urban policymakers can accelerate the agenda. Stockholm Environment Institute, September 2022. http://dx.doi.org/10.51414/sei2022.027.

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Abstract:
We believe the climate crisis will be resolved in cities. Today, while cities occupy only 2% of the Earth's surface, 57% of the world's population lives in cities, and by 2050, it will jump to 68% (UN, 2018). Currently, cities consume over 75% of natural resources, accumulate 50% of the global waste and emit up to 80% of greenhouse gases (Ellen MacArthur Foundation, 2017). Cities generate 70% of the global gross domestic product and are significant drivers of economic growth (UN-Habitat III, 2016). At the same time, cities sit on the frontline of natural disasters such as floods, storms and droughts (De Sherbinin et al., 2007; Major et al., 2011; Rockström et al., 2021). One of the sustainability pathways to reduce the environmental consequences of the current extract-make-dispose model (or the "linear economy") is a circular economy (CE) model. A CE is defined as "an economic system that is based on business models which replace the 'end-of-life' concept with reducing, alternatively reusing, recycling and recovering materials in production/distribution and consumption processes" (Kirchherr et al., 2017, p. 224). By redesigning production processes and thereby extending the lifespan of goods and materials, researchers suggest that CE approaches reduce waste and increase employment and resource security while sustaining business competitiveness (Korhonen et al., 2018; Niskanen et al., 2020; Stahel, 2012; Winans et al., 2017). Organizations such as the Ellen MacArthur Foundation and Circle Economy help steer businesses toward CE strategies. The CE is also a political priority in countries and municipalities globally. For instance, the CE Action Plan, launched by the European Commission in 2015 and reconfirmed in 2020, is a central pillar of the European Green Deal (European Commission, 2015, 2020). Additionally, more governments are implementing national CE strategies in China (Ellen MacArthur Foundation, 2018), Colombia (Government of the Republic of Colombia, 2019), Finland (Sitra, 2016), Sweden (Government Offices of Sweden, 2020) and the US (Metabolic, 2018, 2019), to name a few. Meanwhile, more cities worldwide are adopting CE models to achieve more resource-efficient urban management systems, thereby advancing their environmental ambitions (Petit-Boix & Leipold, 2018; Turcu & Gillie, 2020; Vanhuyse, Haddaway, et al., 2021). Cities with CE ambitions include, Amsterdam, Barcelona, Paris, Toronto, Peterborough (England) and Umeå (Sweden) (OECD, 2020a). In Europe, over 60 cities signed the European Circular Cities Declaration (2020) to harmonize the transition towards a CE in the region. In this policy brief, we provide insights into common challenges local governments face in implementing their CE plans and suggest recommendations for overcoming these. It aims to answer the question: How can the CE agenda be governed in cities? It is based on the results of the Urban Circularity Assessment Framework (UCAF) project, building on findings from 25 interviews, focus group discussions and workshops held with different stakeholder groups in Umeå, as well as research on Stockholm's urban circularity potential, including findings from 11 expert interviews (Rezaie, 2021). Our findings were complemented by the Circular Economy Lab project (Rezaie et al., 2022) and experiences from working with municipal governments in Sweden, Belgium, France and the UK, on CE and environmental and social sustainability.
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