Academic literature on the topic 'End blocks'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'End blocks.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "End blocks"
1
Perko, Roland, Hannes Raggam, and Peter M. Roth. "Mapping with Pléiades—End-to-End Workflow." Remote Sensing 11, no. 17 (September 1, 2019): 2052. http://dx.doi.org/10.3390/rs11172052.
Full textAbstract:
In this work, we introduce an end-to-end workflow for very high-resolution satellite-based mapping, building the basis for important 3D mapping products: (1) digital surface model, (2) digital terrain model, (3) normalized digital surface model and (4) ortho-rectified image mosaic. In particular, we describe all underlying principles for satellite-based 3D mapping and propose methods that extract these products from multi-view stereo satellite imagery. Our workflow is demonstrated for the Pléiades satellite constellation, however, the applied building blocks are more general and thus also applicable for different setups. Besides introducing the overall end-to-end workflow, we need also to tackle single building blocks: optimization of sensor models represented by rational polynomials, epipolar rectification, image matching, spatial point intersection, data fusion, digital terrain model derivation, ortho rectification and ortho mosaicing. For each of these steps, extensions to the state-of-the-art are proposed and discussed in detail. In addition, a novel approach for terrain model generation is introduced. The second aim of the study is a detailed assessment of the resulting output products. Thus, a variety of data sets showing different acquisition scenarios are gathered, allover comprising 24 Pléiades images. First, the accuracies of the 2D and 3D geo-location are analyzed. Second, surface and terrain models are evaluated, including a critical look on the underlying error metrics and discussing the differences of single stereo, tri-stereo and multi-view data sets. Overall, 3D accuracies in the range of 0 . 2 to 0 . 3 m in planimetry and 0 . 2 to 0 . 4 m in height are achieved w.r.t. ground control points. Retrieved surface models show normalized median absolute deviations around 0 . 9 m in comparison to reference LiDAR data. Multi-view stereo outperforms single stereo in terms of accuracy and completeness of the resulting surface models.
2
Birman, A. R., S. A. Ugryumov, A. A. Tambi, F. V. Svoykin, and V. F. Svoykin. "Glued Floor Coverings Based on Wooden End Blocks." Polymer Science, Series D 15, no. 3 (July 25, 2022): 400–403. http://dx.doi.org/10.1134/s1995421222030078.
Full text
3
Li, Yaqin, Binbin Han, Shan Zeng, Shengyong Xu, and Cao Yuan. "End-to-End Point Cloud Completion Network with Attention Mechanism." Sensors 22, no. 17 (August 26, 2022): 6439. http://dx.doi.org/10.3390/s22176439.
Full textAbstract:
We propose a conceptually simple, general framework and end-to-end approach to point cloud completion, entitled PCA-Net. This approach differs from the existing methods in that it does not require a “simple” network, such as multilayer perceptrons (MLPs), to generate a coarse point cloud and then a “complex” network, such as auto-encoders or transformers, to enhance local details. It can directly learn the mapping between missing and complete points, ensuring that the structure of the input missing point cloud remains unchanged while accurately predicting the complete points. This approach follows the minimalist design of U-Net. In the encoder, we encode the point clouds into point cloud blocks by iterative farthest point sampling (IFPS) and k-nearest neighbors and then extract the depth interaction features between the missing point cloud blocks by the attention mechanism. In the decoder, we introduce a new trilinear interpolation method to recover point cloud details, with the help of the coordinate space and feature space of low-resolution point clouds, and missing point cloud information. This paper also proposes a method to generate multi-view missing point cloud data using a 3D point cloud hidden point removal algorithm, so that each 3D point cloud model generates a missing point cloud through eight uniformly distributed camera poses. Experiments validate the effectiveness and superiority of PCA-Net in several challenging point cloud completion tasks, and PCA-Net also shows great versatility and robustness in real-world missing point cloud completion.
4
Tan, Yu-an, Xinting Xu, Chen Liang, Xiaosong Zhang, Quanxin Zhang, and Yuanzhang Li. "An end-to-end covert channel via packet dropout for mobile networks." International Journal of Distributed Sensor Networks 14, no. 5 (May 2018): 155014771877956. http://dx.doi.org/10.1177/1550147718779568.
Full textAbstract:
Voice over Long-Term Evolution enables reliable transmission among enormous Internet of Things devices, by providing end-to-end quality of service for Internet protocol–based services such as audio, video, and multimedia messaging. The research of covert timing channels aims at transmitting covert message stealthily to the receiver using variations of timing behavior. Existing approaches mainly modulate the covert message into inter-packet delays of overt traffic, which are not suitable for Voice over Long-Term Evolution, since most of the inter-packet delays of Voice over Long-Term Evolution traffic are of regular distribution, and any modification on inter-packet delays is easy to be detected. To address the issue, in this work, we propose a novel covert timing channel for the video stream in Voice over Long-Term Evolution, which modulates the covert message by deliberately dropping out video packets. Based on the two-dimensional mapping matrix, the blocks of covert message are mapped into dropout-packet sequence numbers. To recover the covert message, the receiver retrieves the sequence numbers of lost packets and identifies them to be translated into blocks of the covert message. To evaluate our scheme, the simulations with different packet loss rates are conducted to validate the undetectability, throughput, and robustness, finally, the results show that this scheme is effective and reliable.
5
Hatano, Hideaki, Masayuki Yamakami, Yuuki Sakaguchi, Koichi Kobayashi, and Keitetsu Rokugo. "Securing Bridge Girder-End Gap during Earthquake Using Large-Deformation Blocks." Applied Mechanics and Materials 82 (July 2011): 551–58. http://dx.doi.org/10.4028/www.scientific.net/amm.82.551.
Full textAbstract:
The girder-end gap of a bridge should preferably be narrowed from the standpoint of the durability of the expansion joint and noise reduction but is required to be widened, when seismic isolation supports are used, from the aspect of preventing collision. This study began with research into noise generated from expansion joints and the load-bearing capacity of the parapet walls of bridges. Special blocks were then fabricated using a HPFRCC and expanded polystyrene. These are capable of bearing vertical loads including wheel loads on a normal basis, readily having large deformation in the bridge longitudinal direction during an earthquake to follow the sway and slide of the girders, and being easily exchangeable after an earthquake to make the bridge highly restorable. The blocks, which are highly anisotropic in terms of mechanics, were found to provide the expected functions, being deformable in the bridge-axis direction by more than 20%. The inclusion of fibers was effective in preventing scaling from fractured blocks, and the use of expanded polystyrene enabled the blocks to recover more than 50% of their ultimate deformation.
6
Manchikanti, Laxmaiah. "Accuracy of Diagnostic Lumbar Facet Joint Nerve Blocks: A 2-Year Follow-Up of 152 Patients Diagnosed with Controlled Diagnostic Blocks." September 2009 5;12, no. 5;9 (September 14, 2009): 855–66. http://dx.doi.org/10.36076/ppj.2009/12/855.
Full textAbstract:
Background: Lumbar facet joint pain is diagnosed by controlled diagnostic blocks. The accuracy of controlled diagnostic blocks has been demonstrated in multiple studies and confirmed in systematic reviews. Controlled diagnostic studies have shown an overall prevalence of lumbar facet joint pain in 31% of the patients with chronic low back pain without disc displacement or radiculitis, with an overall false-positive rate of 30% using a single diagnostic block. Study Design: An observational report of outcomes assessment. Setting: An interventional pain management practice setting in the United States. Objective: To determine the accuracy of controlled diagnostic blocks in managing lumbar facet joint pain at the end of 2 years. Methods: This study included 152 patients diagnosed with lumbar facet joint pain using controlled diagnostic blocks. The inclusion criteria was based on a positive response to diagnostic controlled comparative local anesthetic lumbar facet joint blocks. The treatment included therapeutic lumbar facet joint nerve blocks. Outcome Measures: The sustained diagnosis of lumbar facet joint pain at the end of one year and 2 years based on pain relief and functional status improvement. Results: At the end of one year 93% of the patients and at the end of 2 years 89.5% of the patients were considered to have lumbar facet joint pain. Limitations: The study is limited by its observational nature. Conclusion: Controlled diagnostic lumbar facet joint nerve blocks are valid utilizing the criteria of 80% pain relief and the ability to perform previously painful movements, with sustained diagnosis of lumbar facet joint pain in at least 89.5% of the patients at the end of a 2-year follow-up period. Key words: Chronic low back pain, lumbar facet or zygapophysial joint pain, facet joint nerve or medial branch blocks, controlled local anesthetic blocks, construct validity, diagnostic studies, diagnostic accuracy
7
Manchikanti, Laxmaiah. "Making Sense of the Accuracy of Diagnostic Lumbar Facet Joint Nerve Blocks: An Assessment of the Implications of 50% Relief, 80% Relief, Single Block, or Controlled Diagnostic Blocks." Pain Physician 2;13, no. 1;2 (March 14, 2010): 133–43. http://dx.doi.org/10.36076/ppj.2010/13/133.
Full textAbstract:
Background: The presence of lumbar facet joint pain has been overwhelmingly supported and the accuracy of controlled diagnostic blocks has been demonstrated in multiple studies and confirmed in systematic reviews. However, controversy surrounds the following related issues: placebo control, the amount of relief (50% versus 80%), single block versus double block, and placebo or comparative control. Study Design: An observational report of an outcome study to establish the diagnostic accuracy of controlled lumbar facet joint nerve blocks. Setting: An interventional pain management practice setting in the United States. Objective: To determine the accuracy of controlled diagnostic blocks in managing lumbar facet joint pain at the end of 2 years, with 2 different criteria (50% or 80% relief) and single block versus double block. Methods: A previous study of 152 patients showed an 89.5% of sustained diagnosis of lumbar facet joint pain at the end of a 2-year follow-up period when the diagnosis was made with double blocks and at least 80% relief. The present evaluation includes comparison of the above results with a study of 110 patients undergoing lumbar facet joint nerve blocks with positive criteria of at least 50% relief and follow-up of 2 years. The inclusion criteria in both studies was based on a positive response to diagnostic controlled comparative local anesthetic lumbar facet joint blocks, with either 50% or 80% relief and the ability to perform previously painful movements. The treatment in both groups included therapeutic lumbar facet joint interventions either with facet joint nerve blocks or radiofrequency neurotomy. Outcome Measures: The sustained diagnosis of lumbar facet joint pain at the end of one year and 2 years based on pain relief and functional status improvement. Results: At the end of one year, the diagnosis was confirmed in 75% of the group with 50% relief, whereas it was 93% in the group with 80% relief. At the end of the 2-year follow-up, the diagnosis of lumbar facet joint pain was sustained in 51% of the patients in the group with 50% relief, whereas it was sustained in 89.5% of the patients with 80% relief. The results differed between 50% relief and 80% relief with prevalence of 61% facet joint pain with dual blocks with 50% relief, and 31% with dual blocks with 80% relief; whereas with only a single block, the prevalence was 73% with 50% relief and 53% in the 80% relief group. Limitations: The study is limited by its observational nature. Conclusion: Controlled diagnostic lumbar facet joint nerve blocks are valid utilizing the criteria of 80% pain relief and the ability to perform previously painful movements, with a sustained diagnosis of lumbar facet joint pain in at least 89.5% of the patients at the end of a 2-year follow-up. In contrast, the diagnosis was sustained in 51% of the patients with 50% relief at the end of 2 years. Thus, inappropriate diagnostic criteria will increase the prevalence of facet joint pain substantially, leading to inappropriate and unnecessary treatment. Key words: Chronic low back pain, lumbar facet or zygapophysial joint pain, facet joint nerve or medial branch blocks, controlled local anesthetic blocks, construct validity, diagnostic studies, diagnostic accuracy
8
Burns, Adam B., and Richard A. Register. "Mechanical Properties of Star Block Polymer Thermoplastic Elastomers with Glassy and Crystalline End Blocks." Macromolecules 49, no. 24 (December 9, 2016): 9521–30. http://dx.doi.org/10.1021/acs.macromol.6b02175.
Full text
9
Ohme, Bruce W., Mark R. Larson, Bhal Tulpule, and Alireza Behbahani. "Characterization of Circuit Blocks for Configurable Analog-Front-End." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2014, HITEC (January 1, 2014): 000146–53. http://dx.doi.org/10.4071/hitec-wa13.
Full textAbstract:
Analog functions have been implemented in a Silicon-on-Insulator (SOI) process optimized for high-temperature (>225°C) operation. These include a linear regulator/reference block that supports input voltages up to 50V and provides multiple independent voltage outputs. Additional blocks provide configurable sensor excitation levels of up to 10V DC and/or 20V AC-differential, with current limiting and monitoring. A dual-channel Programmable-Gain-Instrumentation Amplifier (PGIA) and a high-level AC input block with programmable gain and offset serve signal conditioning, gain, and scaling needs. A multiplexer and analog buffer provide an output that is scaled and centered for down-stream A-to-D conversion. Limited component availability and high component counts deter development of sensing and control electronics for extreme temperature (>200°) applications. Systems require front-end power conditioning, sensor excitation and monitoring, response amplification, scaling, and multiplexing. Back-end Analog-to-Digital conversion and digital processing/control can be implemented using one or two integrated circuit chips, whereas the front-end functions require component counts in the dozens. The low level of integration in the available portfolio of SOI devices results in high component count when constructing signal conditioning interfaces for aerospace sensors. These include quasi-DC sensors such as thermo-couples, strain-gauges, bridge transducers as well as AC-coupled sensors and position transducers, such as Linear Variable Differential Transducers (LVDT's). Furthermore, a majority of sensor applications are best served by excitation/response voltage ranges that typically exceed the voltage range of digital electronics (either 5V or 3.3V in currently available digital IC's for use above 200°C). These constraints led Embedded Systems LLC to design a generic device which was implemented by Honeywell as an analog ASIC (Application Specific Integrated Circuit). This paper will describe the ASIC block-level capabilities in the context of the typical applications and present characterization data from wafer-level testing at the target temperature range (225C). This material is based upon work performed by Honeywell International under a subcontract from Embedded Systems LLC, funding for which was provided by the U.S. Air Force Small Business Innovative Research program.
10
Lo Verso, Federica, and Christos N. Likos. "End-functionalized polymers: Versatile building blocks for soft materials." Polymer 49, no. 6 (March 2008): 1425–34. http://dx.doi.org/10.1016/j.polymer.2007.11.051.
Full textDissertations / Theses on the topic "End blocks"
1
Ghorbanzadeh, Mohammad. "Resource Allocation and End-to-End Quality of Service for Cellular Communications Systems in Congested and Contested Environments." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/64390.
Full textAbstract:
This research addresses the concept of radio resource allocation for cellular communications systems operating in congested and contested environments with an emphasis on end-to-end quality of service (QoS). The radio resource allocation is cast under a proportional fairness formulation which translates to a convex optimization problem. Moreover, the resource allocation scheme considers subscription-based and traffic differentiation in order to meet the QoS requirements of the applications running on the user equipment in the system. The devised resource allocation scheme is realized through a centralized and a distributed architecture and solution algorithms for the aforementioned architectures is derived and implemented in the mobile devices and the base stations. The sensitivity of the resource allocation scheme to the temporal dynamics of the quantity of the users in the system is investigated. Furthermore, the sensitivity of the resource allocation scheme to the temporal dynamics in the application usage percentages is accounted for. In addition, a transmission overhead of the centralized and distributed architectures for the resource allocation schemes is performed. Furthermore, the resource allocation scheme is modified to account for a possible additive bandwidth done through spectrum sharing in congested and contested environments, in particular spectrally coexistent radar systems. The radar-spectrum additive portion is devised in a way to ensure fairness of the allocation, high bandwidth utilization, and interference avoidance. In order to justify the aforesaid modification, the interference from radar systems into the Long Term Evolution (LTE) as the predominant 4G technology is studies to confirm the possibility of the spectrum sharing. The preceding interference analysis contains a detailed simulation of radar systems, propagation path loss models, and a third generation partnership project compliant LTE system. The propagation models are Free Space Path Loss (FSPL) and Irregular Terrain Model (ITM). The LTE systems under consideration are macro cell, outdoor small cells, and indoor small cells. Furthermore, the resource allocation under channel consideration is formalized such that the resources are allocated under a congested environment and based on the quality of channel the users have in the network as well as the quality of service requirements of the applications running on the mobile devices.Ph. D.
2
Rashtian, Hooman. "On the use of body biasing to improve the performance of CMOS RF front-end building blocks." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44723.
Full textAbstract:
Body biasing is commonly used in digital and low-power analog integrated circuits to adjust the threshold voltage of complementary metal-oxide-semiconductor (CMOS) transistors and to lower the supply voltage. In this work, the application of body biasing to improve the performance of four of the main building blocks of CMOS radio-frequency (RF) front-ends is explored. Here, the body-biasing technique is used in conjunction with other design techniques and provides an extra degree of freedom in the design of CMOS RF front-end building blocks including low-noise amplifiers (LNAs), active down-conversion mixers, voltage-controlled oscillators (VCOs), and power amplifiers (PAs). The performance improvements are mainly related to noise and linearity of these building blocks and have been achieved through adjusting the values of the bulk-source transconductance, the source-bulk capacitance, and the threshold voltage of the MOS transistors. Body biasing is applied in multi-stage LNAs to improve their noise figure and linearity as well as to adjust the gain. Body biasing is used to improve the linearity of active down-conversion mixers with gradual LO switching by enhancing the linearity of the LO stage. Body biasing is used in cross-coupled LC VCOs to improve their phase noise performance by forward body biasing of core transistors which lowers the duty cycle in class-C mode of operation. In active-inductor-based LC VCOs, body biasing is used to increase the tuning range of active inductors and thus the oscillation frequency. Finally, body biasing is in the predistortion stage of class-AB PAs to improve the linearity by compensating for the voltage-dependent nonlinear gate-source capacitance of the input transistor of the PA. In all cases, these improvements are achieved with minimal overhead on circuit-level complexity and power consumption of the overall system. The proposed applications of body-biasing technique are validated through measurements on different proof-of-concept prototypes fabricated in 0.13-µm, 90-nm, and 65-nm CMOS technologies.
3
Kraemer, Michael. "Design of a low-power 60 GHz transceiver front-end and behavioral modeling and implementation of its key building blocks in 65 nm CMOS." Phd thesis, INSA de Toulouse, 2010. http://tel.archives-ouvertes.fr/tel-00554674.
Full textAbstract:
Worldwide regulations for short range communication devices allow the unlicensed use of several Gigahertz of bandwidth in the frequency band around 60 GHz. This 60GHz band is ideally suited for applications like very high data rate, energy-autonomous wireless sensor networks or Gbit/s multimedia links with low power constraints. Not long ago, radio interfaces that operate in the millimeter-wave frequency range could only be realized using expensive compound semiconductor technologies. Today, the latest sub-micron CMOS technologies can be used to design 60GHz radio frequency integrated circuits (RFICs) at very low cost in mass production. This thesis is part of an effort to realize a low power System in Package (SiP) including both the radio interface (with baseband and RF circuitry) and an antenna array to directly transmit and receive a 60GHz signal. The first part of this thesis deals with the design of the low power RF transceiver front-end for the radio interface. The key building blocks of this RF front-end (amplifiers, mixers and a voltage controlled oscillator (VCO)) are designed, realized and measured using the 65nm CMOS technology of ST Microelectronics. Full custom active and passive devices are developed and characterized for the use within these building blocks. An important step towards the full integration of the RF transceiver front-end is the assembly of these building blocks to form a basic receiver chip. Circuits with small chip size and low power consumption compared to the state of the art have been accomplished. The second part of this thesis concerns the development of behavioral models for the designed building blocks. These system level models are necessary to simulate the behavior of the entire SiP, which becomes too complex when using detailed circuit level models. In particular, a novel technique to model the transient, steady state and phase noise behavior of the VCO in the hardware description language VHDL-AMS is proposed and implemente d. The model uses a state space description to describe the dynamic behavior of the VCO. Its nonlinearity is approximated by artificial neural networks. A drastic reduction of simulation time with respect to the circuit level model has been achieved, while at the same time maintaining a very high level of accuracy.
4
Kraemer, Michael M. "Design of a low-power 60 GHz transceiver front-end and behavioral modeling and implementation of its key building blocks in 65 nm CMOS." Thesis, Toulouse, INSA, 2010. http://www.theses.fr/2010ISAT0027/document.
Full textAbstract:
La réglementation mondiale, pour des appareils de courte portée, permet l’utilisation sans licence de plusieurs Gigahertz de bande autour de 60 GHz. La bande des 60 GHz répond aux besoins des applications telles que les réseaux de capteurs très haut débit autonome en énergie,ou les transmissions à plusieurs Gbit/s avec des contraintes de consommation d’énergie. Il y a encore peu de temps, les interfaces radios fonctionnant dans la bande millimétrique n’étaient réalisables qu’en utilisant des technologies III-V couteuses. Aujourd’hui, les avancées des technologies CMOS nanométriques permettent la conception et la production en masse des circuits intégrées radiofréquences (RFIC) à faible coût.Cette thèse s’inscrit dans des travaux de recherches dédiés à la réalisation d’un système dans un boîtier (SiP, System in Package) à 60 GHz contenant à la fois l’interface radio (bande de base et circuits RF) ainsi qu’un réseau d’antennes. La première partie de cette thèse est dédiée la conception de la tête RF de l’émetteur-récepteur à faible consommation pour l’interface radio. Les blocs clefs de cette tête RF (amplificateurs, mélangeurs et un oscillateur commandé en tension) sont conçus, réalisés et mesurés en utilisant la technologie CMOS 65 nm de ST Microelectronics. Des éléments actifs et passifs sont développés spécifiquement pour l’utilisation au sein de ces blocs. Une étape importante vers l’intégration de la tête RF complète de l’émetteur-récepteur est l’assemblage de ces blocs de base afin de réaliser une puce émetteur et une puce récepteur. A ce but, une tête RF pour le récepteur a été réalisée. Ce circuit présent une consommation et un encombrement plus réduit que l’état de l’art.La deuxième partie de cette thèse présente le développement des modèles comportementaux des blocs de base conçus. Ces modèles au niveau système sont nécessaires afin de simuler le comportement du SIP, qui devient trop complexe si des modèles détaillés du niveau circuitsont utilisés. Dans cette thèse, une nouvelle technique modélisant le comportement en régime transitoire et régime permanent ainsi que le bruit de phase des oscillateurs commandés en tension est proposée. Ce modèle est implémenté dans le langage de description de matérielVHDL-AMS. La technique proposée utilise des réseaux de neurones artificiels pour approximer la caractéristique non linéaire du circuit. La dynamique est décrite dans l’espace d’état. Grâce à ce modèle, il est possible de réduire d’une façon drastique le temps de calcul des simulations système tout en conservant une excellente précisionWorldwide regulations for short range communication devices allow the unlicensed use of several Gigahertz of bandwidth in the frequency band around 60GHz. This 60GHz band is ideally suited for applications like very high data rate, energy-autonomous wireless sensor networks or Gbit/s multimedia links with low power constraints. Not long ago, radio interfaces that operate in the millimeter-wave frequency range could only be realized using expensive compound semiconductor technologies. Today, the latest sub-micron CMOS technologies can be used to design 60GHz radio frequency integrated circuits (RFICs)at very low cost in mass production. This thesis is part of an effort to realize a low power System in Package (SiP) including both the radio interface (with baseband and RF circuitry) and an antenna array to directly transmit and receive a 60GHz signal. The first part of this thesis deals with the design of the low power RF transceiver front-end for the radio interface. The key building blocks of this RF front-end (amplifiers, mixers and a voltage controlled oscillator (VCO)) are designed, realized and measured using the 65nm CMOS technology of ST Microelectronics. Full custom active and passive devices are developed for the use within these building blocks. An important step towards the full integration of the RF transceiver front-end is the assembly of these building blocks to form basic transmitter and receiver chips. Circuits with small chip size and low power consumption compared to the state of the art have been accomplished.The second part of this thesis concerns the development of behavioral models for the designed building blocks. These system level models are necessary to simulate the behavior of the entire SiP, which becomes too complex when using detailed circuit level models. In particular, a novel technique to model the transient, steady state and phase noise behavior of the VCO in the hardware description language VHDL-AMS is proposed and implemented. The model uses a state space description to describe the dynamic behavior of the VCO. Its nonlinearity is approximated by artificial neural networks. A drastic reduction of simulation time with respect to the circuit level model has been achieved, while at the same time maintaining a very high level of accuracy
5
Lee, Minjae. "Design, Synthesis and Self-Assembly of Polymeric Building Blocks and Novel Ionic Liquids, Ionic Liquid-Based Polymers and Their Properties." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77166.
Full textAbstract:
The convergence of supramolecular and polymer sciences has led to the construction of analogs of traditional covalently-constructed polymeric structures and architectures by supramolecular methods. Host-guest complexations of polymers are also possible through well-defined synthesis of polymeric building blocks, for novel supramolecular polymers.
Monotopic polymeric building blocks were synthesized by controlled radical polymerizations with a crown or paraquat initiator. The combinations of terminal and central functionalities of host and guest polymeric building blocks provided chain-extended and tri-armed homopolymers, and diblock and tri-armed copolymers.
A supramolecular graft copolymer was formed from a main-chain poly(ester crown ether) and a paraquat terminated polystyrene. This comb-like copolymer was characterized by a large viscosity increase. A four-armed polystyrene-b-poly(n-butyl methacrylate) was synthesized from a pseudorotaxane macroinitiator derived from a complex of a crown-centered polystyrene and a dufunctional paraquat compound. A single peak with higher molecular weight from size exclusion chromatography proved the copolymer formation.
Supramolecular interactions enhance the ionic conductivity of semi-crystalline ionic polymers; the ionic conductivity of a C₆-polyviologen and dibenzo-30-crown-10 mixture was 100 times higher than the polyviologen itself. However, ionic conductivities of amorphous polyviologens with polyethers were influenced only by glass transition temperature changes.
New imidazolium ionic liquid monomers and imidazolium based polymers were synthesized for potential applications in electroactive devices, such as actuators. Structure-property relationships for pendant imidazolium polyacrylates and main-chain imidazolium polyesters were investigated. Terminal ethyleneoxy moeties enhanced ionic conduction 2~3 times; however, the alkyl chain length effect was negligible. For the imidazoium polyesters, higher ion conductivities result from 1) mono-imidazolium over bis-imidazolium, and 2) bis(trifluoromethanesulfonyl)imide polymers over hexafluorophosphate analogs. A semi-crystalline hexafluorophosphate polyester with C₁₀-sebacate-C₁₀, displayed 400-fold higher ionic conductivity than the amorphous C₆-sebacate-C₆ analogue, suggesting the formation of a biphasic morphology in the former polyester.
New dicationic imidazolium salts have interesting features. 1,2-Bis[N-(N'-alkylimidazoilum)]ethane salts stack well in the solid state and possess multiple solid-solid phase transitions. They complex with dibenzo-24-crown-8 and a dibenzo-24-crown-8 based pyridyl cryptand with Ka = ~30 and 360 M¹, respectively. Some of these dicationic imidazolium salts have low entropies of fusion, typical of plastic crystals.
These newly discovered imidazolium homopolymers have ionic conductivities up to 10⁴ (S cm⁻¹); however, better properties are still required. Well-designed block copolymers should provide both good electrical and mechanical properties from bicontinuous morphologies, such ion channels.Ph. D.
6
Logullo, Bárbara Gonçalves. "Influência do graute e da taxa de armadura no comportamento da alvenaria de blocos de concreto /." Ilha Solteira : [s.n.], 2006. http://hdl.handle.net/11449/91493.
Full textAbstract:
Orientador: Jefferson Sidney CamachoBanca: Jorge Luis Akasaki
Banca: João Bento de Hanai
Resumo: Apresenta-se neste trabalho uma investigação experimental do comportamento da alvenaria estrutural de blocos de concreto, resistência à compressão axial e módulo de elasticidade, em função do emprego de blocos de diferentes resistências, na presença de grautes de resistências variadas e também da existência ou não de armaduras, aplicadas em distintas taxas. Desse modo, são apresentados e comentados os resultados de ensaios de compressão axial em unidades, prismas de três blocos e pequenas paredes, montados com um só tipo de argamassa, mas com blocos de duas resistências distintas, designadas B1 e B2. Os elementos ensaiados são vazios e também preenchidos com grautes de duas resistências, definidas G1 e G2. Além destes, também são ensaiados prismas e paredes armadas, com taxas de armadura ñ 1, ñ 2 e ñ 3. Portanto, são realizados ensaios em prismas e paredes vazias, prismas e paredes grauteadas com as diferentes combinações de classes de bloco e graute e com a combinação de blocos, grautes e taxas de armadura. Com os resultados obtidos foi verificado que o grauteamento praticamente dobrou a resistência do prisma grauteado, e, nas paredes o acréscimo foi médio de 80%, comparado com prisma e parede vazia na área bruta, porém esse aumento não foi proporcional à relação efetiva de áreas. Os prismas grauteados apresentaram diminuição na deformação de ruptura com a utilização de grautes mais rígidos, e, o grauteamento homogeneizou o comportamento de deformabilidade da alvenaria e do bloco que a constitui, no prisma e na parede. Constatou-se, também, que as armaduras não alteraram o comportamento estrutural dos prismas e paredes, nem na sua resistência à compressão axial e nem na sua deformabilidade.
Abstract: It is presented in this work an experimental investigation of the structural mansory of concrete blocks behavior, resistance to axial compression and elastic modulus, in function of the utilization of blocks of different resistances, with the presence of grout of varying resistances and the existance or not of armour, applied in distinct taxes. By this way, it's shown and commented the trials results of axial compression in units, three-block prisms and small walls, manufactured with just one type of mortar, but with blocks with two distincts resistances, called B1 and B2. The tested elements are empty and filled with grout of two resistances, defined as G1 and G2. Besides them, armoured prism and walls were tested too, with armour taxes called ñ 1, ñ 2 and ñ 3. Hence, the trials are executed in empty prisms and walls, grouted prisms and walls with the different combinations of classes of blocks and grouts and with the combination of blocks, grouts and armour taxes. With the obtained results, it was verified that the grout almost doubled the resistance of the grouted prism and, in walls there was an 80% increase, compared with empty prism and walls in brute area, although this increase was not proportional to the effective relation of areas. The grouted prisms presented a decrease in rupture deformation with the utilization of more rigid grouts, and the grout smoothed the deformability behaviour in mansory and in the block that form it, in prisms and walls. It was noticed too, that the armour do not alter the structure behavior of prisms and walls, not even in theirs resistance to axial compression force, neither to theirs deformability.
Mestre
7
Escurra, Jorge Jose. "Optimal Irrigation Management for Sloping Blocked-End Borders." DigitalCommons@USU, 2008. https://digitalcommons.usu.edu/etd/214.
Full textAbstract:
A robust mathematical model of one-dimensional flow for sloping, blocked-end border irrigation was developed using the four-point implicit method to solve the Saint-Venant equations, the volume-balance solution method, and the implementation of new algorithms to avoid numerical instability and solution divergence. The model has the capability of successfully simulating all surface irrigation phases in blocked-end borders for a range of inflow rates (0.01 - 0.05 m3/s per m), longitudinal slopes (up to 1.00%), and border lengths (100 - 500 m). To achieve numerical stability over the specified parameter ranges, the model was divided into three parts: (1) advance-phase simulation which uses the four-point implicit solution method of the Saint-Venant equations, with an algorithm that changes the spatial and temporal weighting, in addition to an algorithm that handles the water depth profile at the blocked-end downstream boundary upon completion of the advance phase; (2) simultaneous advance-recession-phase calculations using a hybrid algorithm to solve the governing equations; and (3) recession-phase simulation using the four-point implicit method until (and if) divergence occurs, then the volume-method is applied to complete the simulation. The three parts also involve the use of computational grid management algorithms and a parabolic equation which defines the Chezy coefficient as a function of water depth. The model incorporates the downhill simplex optimization method to determine the recommended inflow rate and irrigation cutoff time, maximizing a composite irrigation efficiency (water requirement efficiency and application efficiency). Different optimum values of inflow rate and irrigation cutoff time for a range of longitudinal slopes, border lengths, and soil types were generated. Most of the optimum values are for relatively high inflow rate and rapid cutoff time. In addition, exponential relations were developed, based on the simulation results, to determine the best irrigation time for maximization of the composite irrigation efficiency for specified, non-optimal inflow rates. The exponential relations are particularly useful in practice when it is not feasible to use the optimum inflow rate due to constraints at the water source, or because of irrigation scheduling issues.
8
Felipe, Alexsandro dos Santos. "Contribuição para a otimização de traços de concreto utilizados na produção de blocos estruturais /." Ilha Solteira : [s.n.], 2010. http://hdl.handle.net/11449/91466.
Full textAbstract:
Resumo: Diante do grande crescimento da alvenaria estrutural no país, muitas fábricas de blocos de concreto vieram por necessidade, buscar por otimizações do seu processo produtivo, visto que, projetos mais arrojados, acabam exigindo maiores controles de qualidade. A proposta deste estudo é melhorar a produção destes artefatos de concreto por meio de otimizações simples que reduzem o custo e garantem uma produção eficiente na fábrica. Estudar a fundo os vários parâmetros de formação de um traço de concreto seco, tais como coesão, textura, energias de adensamento e resistência à compressão axial, todos os fenômenos dependentes entre si, torna-se muito complexo se avaliado em um único trabalho. No entanto, propor um estudo que colete informações apresentadas por vários autores, facilita na otimização e criação de uma pesquisa que possa contribuir na dosagem para concretos secos, em especial, na fabricação de blocos estruturais. Neste estudo, adaptaram-se para laboratório alguns equipamentos de uso comum para confecção destes artefatos de concreto, possibilitando a correlação direta de corpos de prova cilíndricos com os blocos. Uma das adaptações é o estudo baseado na padronização da energia de compactação, proporcionada pelo equipamento para ensaios de mini-proctor, simulando assim, a máquina vibro-prensa. Outras correlações como coesão e resistência à compressão, também foram possíveis de obter no laboratório, reduzindo então, as interferências constantes no processo produtivo da fábrica, ocasião verificada em vários outros estudos. Diante do exposto, foi possível avaliar com boa segurança os resultados. O estudo foi desenvolvido em três etapas, sempre buscando a maior massa específica seca compactada da mistura de agregados, inicialmente na primeira etapa, foi utilizado somente dois agregados (areia fina e pedrisco), conforme... (Resumo completo, clicar acesso eletrônico abaixo)Abstract: Given the substantial growth of structural masonry in Brazil, many concrete block companies have seen the need to optimize their production process, since more challenging projects require greater quality control. This study proposes to improve the production of concrete artifacts by means of simple optimizations that reduce costs and ensure the company's efficient production. Studying in depth the various parameters of the formation of dry concrete trace, such as cohesion, texture, density energy and axial compressive strength, all the particularities interdependent on one another become very complex when assessed in a single study. However, proposing a study that collects the information submitted by various authors, expedites optimizing and creating a research study which may assist in improving the dosage for dried concrete, particularly in the manufacture of structural blocks. In this study, some commonly used manufacturing equipment, such as concrete artifacts, were laboratory-adapted, enabling a direct correlation of the cylindrical specimens with the blocks. One of the adjustments is the study based on the standardization of compaction energy, provided by the mini-proctor testing equipment, thus simulating the vibro press machine. Other correlations such as cohesion and compressive strength were also obtained in the laboratory, therefore reducing the constant interferences in the plant's production process, observed in many other studies. In this manner, it was possible to reliably assess the results. The study was conducted in three stages, always seeking the highest compressed dry specific mass of the mixture of aggregates. In the first stage, only two aggregates were used (fine sand and pebbles), commonly used at the plant. The second stage included adding the coarse sand and stone powder to correct the lack of resistance promoted by the high amount of fine sand from... (Complete abstract click electronic access below)
Orientador: Jefferson Sidney Camacho
Coorientador: Maria da Consolação F. de Albuquerque
Banca: Jorge Luís Akasaki
Banca: Paulo César Primo Agostinho
Mestre
9
Silva, Ana Flávia da. "Avaliação da resistência à compressão da alvenaria estrutural /." Ilha Solteira : [s.n.], 2007. http://hdl.handle.net/11449/91473.
Full textAbstract:
Orientador: Jefferson Sidney CamachoBanca: Rogério de Oliveira Rodrigues
Banca: Paulo César Primo Agostinho
Resumo: Atualmente, a construção em alvenaria estrutural toma como base para determinação da resistência das paredes, a resistência de corpos-de-prova prismáticos, constituídos por dois blocos. Este tipo de ensaio é especificado por norma, mas apresenta problemas já bastante conhecidos, como a alteração do valor de sua resistência devido ao confinamento causado pelos pratos da prensa. Esta mesma norma também especifica o ensaio de paredes em tamanho real, que são tão onerosos e de difícil execução, que são poucos os laboratórios capazes de realizá-los. Para complementar as indicações feitas pela norma brasileiras, os laboratórios de pesquisa utilizam outros tipos de corpo-de-prova, como o prisma de três blocos, que atende às necessidades de praticidade sem apresentar a inconveniência da alteração no valor de sua resistência devido ao confinamento pelos pratos da prensa. Mas este corpo-de-prova ainda está longe de representar fielmente a alvenaria final, sendo sua resistência maior que a da parede. Com o presente trabalho deseja-se investigar, de forma ampla, a resistência à compressão e a deformação da alvenaria estrutural de blocos de concreto, utilizando-se de diferentes tipos de corpos-de-prova, compostos por blocos e argamassas de diferentes resistências. Foram utilizados dois tipos de blocos e quatro tipos de argamassas. Estas últimas podem ser divididas, segundo à sua origem, em mistas e industrializadas. Para analisar a influência do tipo de argamassa, foi definido que uma das argamassas industrializadas tivesse resistência próxima a de uma das mistas. Os corpos-de-prova utilizados foram: prisma de dois blocos, prisma de três blocos, painel de (45x60) cm, painel de (90x100) cm e parede de (90x240) cm. Portanto, foram realizadas várias séries de ensaio, com a combinação dos três fatores condicionantes: geometria do corpo-de-prova, resistência... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Currently, the strength of the structural masonry is based on the strength of prismatic specimens, built by two blocks. This type of test is specified by a Brazilian standard, but it presents some problems, such as the alteration of its strength value due to the confinement caused by the machine plates. The same standard also specifies the test of walls in real size, but they are too expensive and its execution is very difficult, so few laboratories are able to carry them out. Trying to attenuate such reality, research centers use other types of specimens, such as the prism of three blocks, which is easy to build and doesn't present the inconvenience of the alteration of its strength value due to the confinement caused by the machine plates. But this kind of specimen is still far from representing, satisfactorily, the masonry: its strength is quite bigger than the masonry one. In this context, the present work aim to investigate, widely, the compressive strength and the deformation of the concrete structural masonry, using different types of specimens, built by blocks and mortars with different strengths. Two types of blocks and four types of mortars were used. These last ones can be divided, according to its origin, in mixing and industrialized. In order to analyze the influence of the type of mortar, it was defined that the strength of one of the industrialized mortar had to be next to one of the mixing. The specimens used were: prism of two blocks, prism of three blocks, panel of (45x60) cm, panel of (90x100) cm and wall of (90x240) cm. Therefore, many series of tests were carried out, with the combination of the three factors: type of specimen, block strength and mortar strength. The results were compared with values found in literature in order to conclude new trends or to reaffirm old theories about the efficiency interval of concrete structural masonry. The deformation was... (Complete abstract click electronic access below)
Mestre
10
Dameron, Bryant Mark. "Walk 14 Blocks." VCU Scholars Compass, 2007. http://scholarscompass.vcu.edu/etd/1431.
Full textAbstract:
Walk 14 Blocks is a document that describes my two-year investigation of simulation in everyday life. It describes how I examine both simulated places and the tools of simulation. I explain the key elements relating my work to simulation; experience, language, and the video monitor. I trace how I have utilized these elements in several works that led to my thesis exhibition titled Evidence.
Books on the topic "End blocks"
1
Itani, Rafik Y. Design of prestressed concrete girders without end blocks. [Olympia?]: Washington State Dept. of Transportation, Planning, Research and Public Transportation Division, 1986.
Find full text
2
Saltzman, Joel. If you're writing, let's talk: A road map past writers' blocks from page one to the end. Rocklin, CA: Prima Pub., 1997.
Find full text
3
Itani, Rafik Y. Design of continuous bridges using precast, prestressed concrete girders without end blocks: Final report, Research Project Y-3400, Task 14. [Olympia, Wash.]: Washington State Dept. of Transportation, Planning, Research and Public Transportation Division in cooperation with the U.S. Dept. of Transportation, Federal Highway Administration, 1987.
Find full text
4
ill, Cartwright Reg, ed. The lot at the end of my block. New York: Hyperion Books for Children, 2001.
Find full text
5
author, Causee Linda, ed. 100 any-size flower blocks. Maumelle, Arkansas: Leisure Arts, Inc., 2014.
Find full text
6
Ōmae, Kenʾichi. The end of the nation state: The rise of regional economies. New York: Free Press, 1995.
Find full text
7
The end of the nation state: The rise of regional economies. London: HarperCollins, 1995.
Find full text
8
D'Alessandro, Edward A. The Ginney Block: Reminiscences of an Italian-American dead-end-street kid. Baltimore, MD (1001 N. Calvert St., Baltimore, MD 21202): Gateway Press, 1988.
Find full text
9
Min zu guo jia de zhong jie: Wu guo jie de shi jie = The end of the nation state. [Taipei]: Li xu wen hua shi ye you xian gong si, 1996.
Find full text
10
Open University. Society and Social Science: a Foundation Course Team. D103 end notes for Block 7: For use with Side B of Audio-cassette 7. [Milton Keynes]: Open University, 1992.
Find full textBook chapters on the topic "End blocks"
1
Engelstein, Geoffrey, and Isaac Shalev. "Game End and Victory." In Building Blocks of Tabletop Game Design, 213–60. 2nd ed. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003179184-5.
Full text
2
Engelstein, Geoffrey, and Isaac Shalev. "Game End and Victory." In Building Blocks of Tabletop Game Design, 163–205. Boca Raton, FL : Taylor & Francis, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429430701-5.
Full text
3
Terry, Richard M. "Tight End Mackey Blocks Commissioner Rozelle." In Sports and the Law, 187–89. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781003249931-35.
Full text
4
Tsang, Tommy, Kuan-Yu Lin, Karim Allidina, and Mourad El-Gamal. "Low Power UWB Circuits: Front-End Building Blocks." In Series on Integrated Circuits and Systems, 53–83. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9917-5_4.
Full text
5
Lauwers, Erik, and Georges Gielen. "High-Level Power Estimation of Analog Front-End Blocks." In Low-Power Design Techniques and CAD Tools for Analog and RF Integrated Circuits, 83–105. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/0-306-48089-1_5.
Full text
6
Tung, L. H., and G. Y. Lo. "Diene Triblock Polymers with Styrene-Alpha-Methylstyrene Copolymer End Blocks." In Advances in Elastomers and Rubber Elasticity, 129–42. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4757-1436-4_7.
Full text
7
Rokugo, K., H. Hatano, T. Nakashima, Y. Sakaguchi, M. Yamakami, and K. Kobayashi. "Shock-Absorbing Blocks Made of HPFRCC for Better Girder-End Structures." In High Performance Fiber Reinforced Cement Composites 6, 305–12. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-2436-5_37.
Full text
8
Senani, Raj, D. R. Bhaskar, and A. K. Singh. "Other Building Blocks Having MTC or CC at Front-end and Their Applications." In Current Conveyors, 349–67. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08684-2_11.
Full text
9
Otto, Thomas. "Risks and Hazards of Particle Accelerator Technologies." In Safety for Particle Accelerators, 5–54. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-57031-6_2.
Full textAbstract:
AbstractIn this section, the motivation and operation of particle accelerators are briefly introduced. Then, safety aspects of the key building blocks are treated. Magnets provide the steering forces for accelerated particles. Cryogenics provides the low temperatures required for the operation of superconducting magnets; radiofrequency technologies impart energy to accelerated particles. A byproduct of their operation is Non-ionising radiation. Another type of NIR is represented by lasers which find increasing use in accelerator applications. Finally, collimators shape the particle beams and protect sensitive elements, while dumps absorb the particles at the end of their course.
10
Weik, Martin H. "end block underline." In Computer Science and Communications Dictionary, 518. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_6175.
Full textConference papers on the topic "End blocks"
1
Shames, Peter M. "Interoperable End-to-End Space Communications Architectures Using CCSDS Building Blocks." In SpaceOps 2016 Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-2340.
Full text
2
Lan, Tian, Sen Li, Yilan Lyu, Chuan Peng, and Qiao Liu. "An End-to-End Speech Enhancement Framework Using Stacked Multi-scale Blocks." In 2019 IEEE 19th International Conference on Communication Technology (ICCT). IEEE, 2019. http://dx.doi.org/10.1109/icct46805.2019.8947298.
Full text
3
Norhudha Sarif, Siti, Sufian Idris, and Abdullah Mohd Zin. "The design of blocks integration tool to support end-user programming." In 2011 International Conference on Electrical Engineering and Informatics (ICEEI). IEEE, 2011. http://dx.doi.org/10.1109/iceei.2011.6021657.
Full text
4
Wang, Yaxi, Ziyun Tong, Qiangsheng Yin, and Xin Chen. "Garbage Sorting and Recycling System of the Master and Slave Stations in Commercial Blocks." In 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1002180.
Full textAbstract:
Content From the perspective of the system, the problem is analyzed according to various elements such as the use environment of the trash can, user needs, mall resources, and stakeholders, and combined with AI intelligent visual recognition and voice-assisted recognition technology to assist design practices to explore new forms of waste classification and recycling. Methods Through field research and literature comparative analysis methods, the relevant advanced experience of domestic and foreign garbage classification and recycling is analyzed, and the relevant table method is used to focus the problems, and the current situation of classification and recycling in commercial blocks is analyzed according to my country's national conditions.Conclusion Design a garbage classification and recycling system for the master and slave stations in the commercial block, integrate the resources of the commercial zone, and achieve the purpose of overall garbage classification through the cooperation between the systems, and create a better commercial block environment. Only by solving the front-end treatment of garbage classification and coordinating the back-end garbage recycling can the purpose of harmless treatment of garbage be achieved. Taking the garbage classification in commercial blocks as the starting point, the purpose of efficient classification and recycling of garbage in commercial blocks is realized, and the garbage classification of the people is improved. consciousness.
5
Dalzhonak, Andrei, and Aliaksandr Bakatovich. "Wall blocks based on the aggregates from plant wastes." In The 13th international scientific conference “Modern Building Materials, Structures and Techniques”. Vilnius Gediminas Technical University, 2019. http://dx.doi.org/10.3846/mbmst.2019.037.
Full textAbstract:
The article considers the possibility of using agricultural waste in the development of new building materials in the form of wall blocks. When selecting the compositions, the ideal fractions and ratios of straw to flax were determined, providing the forming of the densest frame of coarse and fine aggregates. Cement and lime were used as a binder. The effect of humidity on the durability and thermal conductivity of straw wall blocks and straw flax boon blocks were investigated. The conditions for the possible occurrence of mold on the block surface of aggregates were studied. According to the results of full-scale tests, the obtained dependencies of the temperature distribution during the coldest period of the winter season were analyzed and the high insulating ability of wall blocks was confirmed. The dependencies of the distribution of humidity over the thickness of the wall blocks after the end of the winter season testing operations were revealed. As a result of the research, a solution for the rational use of plant waste building wall blocks was proposed. The blocks can be applied to the construction of load-bearing and nonload-bearing walls in one-story buildings and multi-story frame construction when filling exterior wall openings.
6
Thayne, I. "Front-end building blocks using the Glasgow 0.2 μm GaAs MESFET process." In IEE Colloquium on RF and Microwave Circuits for Commercial Wireless Applications. IEE, 1997. http://dx.doi.org/10.1049/ic:19970168.
Full text
7
Evans, H., A. Gilfedder, and A. Kennedy. "B115 A sticky end to wrong-sided blocks: a quality improvement project to reduce the incidence of wrong-sided peripheral nerve blocks." In ESRA Abstracts, 39th Annual ESRA Congress, 22–25 June 2022. BMJ Publishing Group Ltd, 2022. http://dx.doi.org/10.1136/rapm-2022-esra.190.
Full text
8
Zhao, Dixian, Peng Gu, Yongran Yi, and Chongyu Yu. "Key Circuit Building Blocks for 5G Millimeter-Wave Phased-Array Transceiver Front-End (Invited)." In 2018 IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA). IEEE, 2018. http://dx.doi.org/10.1109/cicta.2018.8705946.
Full text
9
Zervando, Y. V., and O. V. Elisheva. "PREREQUISITES FOR FILLING THE RESERVOIRS OF THE NEOCOMIAN INTERVAL OF THE SECTION OF THE AI-YAUN AREA WITH HYDROCARBONS." In All-Russian Youth Scientific Conference with the Participation of Foreign Scientists Trofimuk Readings - 2021. Novosibirsk State University, 2021. http://dx.doi.org/10.25205/978-5-4437-1251-2-133-137.
Full textAbstract:
The report considers structural-tectonic, geochemical and hydrodynamic condi-tions of preservation of the potential oil reservoir BC8 at the Ai-Yaunskoye field. Formation BS8 has a good reservoir in the area. The reservoir deposits are represented by a reservoir of marine genesis with high filtration-volume properties.Because of the faults, the formation has a block structure.The BS8 formation in the Ai-Yaun area is in the zone of potential oil-bearing strata. As of today, one of the blocks has opened an aquifer. The rest of the blocks have not yet been drilled. Therefore, the potential of these sediments is considered unexplored to the end. According to the analysis of the fault model, some of the faults are considered to be through. Hydrocarbons could have migrated along these faults up the section to the PK 1–2 reservoirs. Some of the faults are considered screens, which increases the chances of the BS8 formation discovering oil deposits in it in other tectonic blocks of the reservoir.
10
Sarasola Martin, I., P. Rato Mendes, J. Navarrete, P. Bruyndonckx, J. M. Perez, and C. Willmott. "A dedicated ASIC front-end readout for the monolithic detector blocks of the BrainPET prototype." In 2008 IEEE Nuclear Science Symposium and Medical Imaging conference (2008 NSS/MIC). IEEE, 2008. http://dx.doi.org/10.1109/nssmic.2008.4774321.
Full textReports on the topic "End blocks"
1
Spring, Baker. The Senate Should Block the White House's End Runs on the ABM Treaty,. Fort Belvoir, VA: Defense Technical Information Center, March 1996. http://dx.doi.org/10.21236/ada338590.
Full text
2
Iannone, L., D. Lewis, D. Meyer, and V. Fuller. Locator/ID Separation Protocol (LISP) Endpoint Identifier (EID) Block. RFC Editor, September 2016. http://dx.doi.org/10.17487/rfc7954.
Full text
3
Roye, Thorsten. Unsettled Technology Areas in Deterministic Assembly Approaches for Industry 4.0. SAE International, August 2021. http://dx.doi.org/10.4271/epr2021018.
Full textAbstract:
Increased production rates and cost reduction are affecting manufacturing in all sectors of the mobility industry. One enabling methodology that could achieve these goals in the burgeoning “Industry 4.0” environment is the deterministic assembly (DA) approach. The DA approach is defined as an optimized assembly process; it always forms the same final structure and has a strong link to design-for-assembly and design-for-automation methodologies. It also looks at the whole supply chain, enabling drastic savings at the original equipment manufacturer (OEM) level by reducing recurring costs and lead time. Within Industry 4.0, DA will be required mainly for the aerospace and the space industry, but serves as an interesting approach for other industries assembling large and/or complex components. In its entirety, the DA approach connects an entire supply chain—from part manufacturing at an elementary level to an OEM’s final assembly line level. Addressing the whole process of aircraft design and manufacturing is necessary to develop further collaboration models between OEMs and the supply chain, including addressing the most pressing technology challenges. Since all parts aggregate at the OEM level, the OEM—as an integrator of all these single parts—needs special end-to-end methodologies to drastically decrease cost and lead time. This holistic approach can be considered in part design as well (in the design-for-automation and design-for-assembly philosophy). This allows for quicker assembly at the OEM level, such as “part-to-part” or “hole-to-hole” approaches, versus traditional, classical assembly methods like manual measurement or measurement-assisted assembly. In addition, it can increase flexibility regarding rate changes in production (such as those due to pandemic- or climate-related environmental challenges). The standardization and harmonization of these areas would help all industries and designers to have a deterministic approach with an end-to-end concept. Simulations can easily compare possible production and assembly steps with different impacts on local and global tolerances. Global measurement feedback needs high-accuracy turnkey solutions, which are very costly and inflexible. The goal of standardization would be to use Industry 4.0 feedback and features, as well as to define several building blocks of the DA approach as a one-way assembly (also known as one-up assembly, or “OUA”), false one-way assembly, “Jig-as-Master,” etc., up to the hole-to-hole assembly approach. The evolution of these assembly principles and the link to simulation approaches are undefined and unsolved domains; they are discussed in this report. They must be discussed in greater depth with aims of (first) clarifying the scope of the industry-wide alignment needs and (second) prioritizing the issues requiring standardization. NOTE: SAE EDGE™ Research Reports are intended to identify and illuminate key issues in emerging, but still unsettled, technologies of interest to the mobility industry. The goal of SAE EDGE™ Research Reports is to stimulate discussion and work in the hope of promoting and speeding resolution of identified issues. SAE EDGE™ Research Reports are not intended to resolve the challenges they identify or close any topic to further scrutiny.
4
Iannone, L., R. Jorgensen, D. Conrad, and G. Huston. Management Guidelines for the Locator/ID Separation Protocol (LISP) Endpoint Identifier (EID) Block. RFC Editor, September 2016. http://dx.doi.org/10.17487/rfc7955.
Full text
5
Hirvas, H., and K. Mäkinen. Repérage de blocs glaciaires riches en uranium à Pahtavuoma, dans le nord de la Finlande. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/194817.
Full text
6
Tao, Yang, Amos Mizrach, Victor Alchanatis, Nachshon Shamir, and Tom Porter. Automated imaging broiler chicksexing for gender-specific and efficient production. United States Department of Agriculture, December 2014. http://dx.doi.org/10.32747/2014.7594391.bard.
Full textAbstract:
Extending the previous two years of research results (Mizarch, et al, 2012, Tao, 2011, 2012), the third year’s efforts in both Maryland and Israel were directed towards the engineering of the system. The activities included the robust chick handling and its conveyor system development, optical system improvement, online dynamic motion imaging of chicks, multi-image sequence optimal feather extraction and detection, and pattern recognition. Mechanical System Engineering The third model of the mechanical chick handling system with high-speed imaging system was built as shown in Fig. 1. This system has the improved chick holding cups and motion mechanisms that enable chicks to open wings through the view section. The mechanical system has achieved the speed of 4 chicks per second which exceeds the design specs of 3 chicks per second. In the center of the conveyor, a high-speed camera with UV sensitive optical system, shown in Fig.2, was installed that captures chick images at multiple frames (45 images and system selectable) when the chick passing through the view area. Through intensive discussions and efforts, the PIs of Maryland and ARO have created the protocol of joint hardware and software that uses sequential images of chick in its fall motion to capture opening wings and extract the optimal opening positions. This approached enables the reliable feather feature extraction in dynamic motion and pattern recognition. Improving of Chick Wing Deployment The mechanical system for chick conveying and especially the section that cause chicks to deploy their wings wide open under the fast video camera and the UV light was investigated along the third study year. As a natural behavior, chicks tend to deploy their wings as a mean of balancing their body when a sudden change in the vertical movement was applied. In the latest two years, this was achieved by causing the chicks to move in a free fall, in the earth gravity (g) along short vertical distance. The chicks have always tended to deploy their wing but not always in wide horizontal open situation. Such position is requested in order to get successful image under the video camera. Besides, the cells with checks bumped suddenly at the end of the free falling path. That caused the chicks legs to collapse inside the cells and the image of wing become bluer. For improving the movement and preventing the chick legs from collapsing, a slowing down mechanism was design and tested. This was done by installing of plastic block, that was printed in a predesign variable slope (Fig. 3) at the end of the path of falling cells (Fig.4). The cells are moving down in variable velocity according the block slope and achieve zero velocity at the end of the path. The slop was design in a way that the deacceleration become 0.8g instead the free fall gravity (g) without presence of the block. The tests showed better deployment and wider chick's wing opening as well as better balance along the movement. Design of additional sizes of block slops is under investigation. Slops that create accelerations of 0.7g, 0.9g, and variable accelerations are designed for improving movement path and images.
7
Díaz Rodríguez, Elaine. Blogs y periodismo en Cuba: entre el “deber ser” y la realidad. Revista Latina de Comunicación Social, 2009. http://dx.doi.org/10.4185/rlcs-64-2009-873-951-967.
Full text
8
Ortiz, Raphaëlle, Anamaría Núñez, Marcello Basani, Jacopo Gamba, Claudia Calderón, and Patricia Núñez. Hablando de integridad en agua y saneamiento: evolución reciente del debate sobre integridad y transparencia en el sector de agua y saneamiento en América Latina y el Caribe. Inter-American Development Bank, April 2022. http://dx.doi.org/10.18235/0004189.
Full textAbstract:
Las conversaciones digitales públicas ayudan a entender la manera en que el público, los gobiernos y las empresas proveedoras de servicios mencionan y perciben tópicos importantes como la integridad y la transparencia en el sector de agua y saneamiento. Este informe analiza medios sociales digitales disponibles públicamente, incluyendo artículos de noticias, blogs y tweets, para identificar contenido referido a la integridad y transparencia del agua y saneamiento en América Latina y el Caribe entre enero de 2016 y julio de 2020. El siguiente análisis busca descubrir tendencias, móviles y distribución de estas conversaciones. También se analizan las diferencias entre fuentes (por ejemplo: canales digitales de noticias versus redes sociales) y el impacto que tuvo la pandemia de COVID-19 sobre los tópicos y volumen del debate.
9
Toloo, Sam, Ruvini Hettiarachchi, David Lim, and Katie Wilson. Reducing Emergency Department demand through expanded primary healthcare practice: Full report of the research and findings. Queensland University of Technology, January 2022. http://dx.doi.org/10.5204/rep.eprints.227473.
Full textAbstract:
Demand for public hospital emergency departments’ services and care is increasing, placing considerable restraint on their performance and threatens patient safety. Many factors influence such demand including individual characteristics (e.g. perceptions, knowledge, values and norms), healthcare availability, affordability and accessibility, population aging, and internal health system factors (e.g patient flow, discharge process). To alleviate demand, many initiatives have been trialled or suggested, including early identification of at-risk patients, better management of chronic disease to reduce avoidable ED presentation, expanded capacity of front-line clinician to manage sub-acute and non-urgent care, improved hospital flow to reduce access block, and diversion to alternate site for care. However, none have had any major or sustained impact on the growth in ED demand. A major focus of the public discourse on ED demand has been the use and integration of primary healthcare and ED, based on the assumption that between 10%–25% of ED presentations are potentially avoidable if patients’ access to appropriate primary healthcare (PHC) services were enhanced. However, this requires not only improved access but also appropriateness in terms of the patients’ preference and PHC providers’ capacity to address the needs. What is not known at the moment is the extent of the potential for diversion of non-urgent ED patients to PHC and the cost-benefits of such policy and funding changes required, particularly in the Australian context. There is a need to better understand ED patients’ needs and capacity constraint so as to effect delivery of accessible, affordable, efficient and responsive services. Jennie Money Doug Morel
10
Lehtimaki, Susanna, Kassim Nishtar, Aisling Reidy, Sara Darehshori, Andrew Painter, and Nina Schwalbe. Independent Review and Investigation Mechanisms to Prevent Future Pandemics: A Proposed Way Forward. United Nations University International Institute for Global Health, May 2021. http://dx.doi.org/10.37941/pb-f/2021/2.
Full textAbstract:
Based on the proposal by the European Council, more than 25 heads of state and the World Health Organization (WHO) support development of an international treaty on pandemics, that planned to be negotiated under the auspices of WHO, will be presented to the World Health Assembly in May 2021. Given that the treaty alone is not enough to ensure compliance, triggers for a high-level political response is required. To this end, to inform the design of a support system, we explored institutional mechanismsi with a mandate to review compliance with key international agreements in their signatory countries and conduct independent country investigations in a manner that manages sovereign considerations. Based on our review, there is no single global mechanism that could serve as a model in its own right. There is, however, potential to combine aspects of existing mechanisms to support a strong, enforceable treaty. These aspects include: • Periodic review - based on the model of human rights treaties, with independent experts as the authorized monitoring body to ensure the independence. If made obligatory, the review could support compliance with the treaty. • On-site investigations - based on the model by the Committee on Prevention of Torture according to which visits cannot be blocked by state parties. • Non-negotiable design principles - including accountability; independence; transparency and data sharing; speed; emphasis on capabilities; and incentives. • Technical support - WHO can provide countries with technical assistance, tools, monitoring, and assessment to enhance emergency preparedness and response.