Relevant bibliographies by topics / Rotational systems

Academic literature on the topic 'Rotational systems'

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Published: 10 December 2022
Last updated: 19 February 2023

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Journal articles on the topic "Rotational systems"

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Pani, John R., and Davido Dupree. "Spatial Reference Systems in the Comprehension of Rotational Motion." Perception 23, no. 8 (August 1994): 929–46. http://dx.doi.org/10.1068/p230929.

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In certain simple rotations of objects, the orientation of the axis and planes of rotation can determine whether people are able to visualize the motion or perceive it as simple and coherent. This finding affords the opportunity to investigate the spatial reference systems used to define the orientation of the axis and planes of rotation. The results of two experiments suggest that the permanent environment is the primary reference system, apart from the rotating object, used for this purpose. Subjects also were able to use a local spatial environment to determine the orientation of the motion; some subjects were particularly adept at this. The viewer perspective, in contrast, was irrelevant as a reference system in these experiments. These results argue strongly for the primacy of environmental reference systems in the perception and imagination of orientation and extend the set of findings common between the comprehension of rotational motion and orientation-sensitive form perception.
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Pani, John R. "Limits on the Comprehension of Rotational Motion: Mental Imagery of Rotations with Oblique Components." Perception 22, no. 7 (July 1993): 785–808. http://dx.doi.org/10.1068/p220785.

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Mental imagery of rotational motion across variation in the orientation of a square to an axis of rotation, the orientation of the axis to the environment/viewer, and the starting orientation of the rotation were investigated in three experiments. The experimental method included specifying the particular rotations that subjects should consider and obtaining exact predictions of the outcomes of the rotations. When the square was normal to the axis and the axis was normal to the environment/viewer, performance was excellent. When either of these relationships was oblique, performance was quite good. When both of these relationships were oblique, nearly every subject made large errors on every problem. The difficulty of the double-oblique rotations was reduced when the initial orientation of the square was not canonical. Current views of the comprehension of rotational motion are discussed. It appears that the comprehension of rotational motion can be understood as an organization of the symmetric space traced out by the motion. People succeed in organizing this space when it is aligned with a principal spatial reference system.
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Painter, K. M., D. L. Young, D. M. Granatstein, and D. J. Mulla. "Combining alternative and conventional systems for environmental gains." American Journal of Alternative Agriculture 10, no. 2 (June 1995): 88–96. http://dx.doi.org/10.1017/s0889189300006214.

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AbstractTwo conventional cropping systems (winter wheat/dry peas and winter wheat/spring barley/dry peas) in the dryland grain region of southeastern Washington were compared with several alternative systems regarding profitability and environmental impacts. Two of the alternative systems use green manure crops and have low fertilizer and pesticide requirements. The remaining two are otherwise conventional rotations modified to include soil-building crops, bluegrass seed and rapeseed.Estimates of annual off-site erosion damage ranged from $6.56 to $20.50 per rotational acre, while on-site damage estimates ranged from $0.50 to $1.55 per rotational acre. Estimated leaching losses of pesticides to a water table 3.6 feet deep were negligible, but significant leaching losses of nitrate-N were predicted to occur from fall-applied inorganic fertilizer.Including bluegrass in a conventional grain rotation increased estimated net returns over variable costs by 16% and decreased soil loss by 33% compared with the most profitable conventional rotation. The next most profitable alternative system, rapeseed plus a conventional grain rotation, had slightly higher net returns over variable costs than the second most profitable conventional rotation, with slightly less soil loss. When fixed costs of machinery depreciation and land are included, the alternative systems fared relatively better. An experimental wheat/pea/medic system had higher projected net returns over total costs than the most profitable conventional rotation, while averaging just one-third as much soil loss per year. A wheat/barley/sweetclover green manure rotation was similar in profitability to the less profitable conventional rotation, but had only two-thirds as much soil loss.We constructed a mixed-integer linear programming model to determine the profitmaximizing combination of conventional and alternative rotations under 1990 farm bill provisions. Planting all or nearly all land to the bluegrass plus conventional grain rotation maximized returns over total costs for high, medium, and low program crop price scenarios. Farmers maximized profit by participating in both the wheat and barley programs under the low price scenario, only in the wheat program with moderate prices, and in neither the wheat nor the barley program under the high price scenario.
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Casdagli, Martin. "Rotational chaos in dissipative systems." Physica D: Nonlinear Phenomena 29, no. 3 (January 1988): 365–86. http://dx.doi.org/10.1016/0167-2789(88)90036-x.

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Mazurov, B. T. "Geodynamic systems (qualitative research rotational movements)." Geodesy and Cartography 919, no. 1 (February 20, 2017): 35–39. http://dx.doi.org/10.22389/0016-7126-2017-919-1-35-39.

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Geodetic data and their subsequent statistical analysis enable mathematical modeling and identifying the stress-deformed state of geodynamic systems in concern to the aspect of natural and man-made disasters prediction. Geodetic monitoring geodynamic processes is necessary for solving a number of scientific and practical tasks of geodesy i.e. expanding and maintaining the national geodetic network, studying changes in gravity field in time, using GNSS technology. Most important extension of research is mathematical modelling of geodynamic systems in a predictive order. To study the complex (nonlinear) geodynamic processes the appropriate mathematical framework should be selected. Here are theoretical foundations for studying rotation movements of the earth’s surface. A mathematical model of rotary circular structures of the Earth was mentioned. There are mathematical models explaining the nature of sudden global, regional and some local geodynamic processes. They are based on differences in temporal and spatial scales, of geodynamic systems. Theoretical bases of description rotational motions on a plane by a system of differential equations were considered. Some examples of integral curves were given. They can be qualitative characteristics of geodynamic systems. In many cases, a similar trajectory corresponds to the rotational horizontal movements of the earth’s surface.
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Afaunov, A. A., K. K. Takhmazyan, M. L. Mukhanov, I. V. Basankin, and M. Yu Ageyev. "Rotational stability of thoracolumbar junction fixation systems." Innovative Medicine of Kuban, no. 2 (June 20, 2021): 21–28. http://dx.doi.org/10.35401/2500-0268-2021-22-2-21-28.

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Objective To compare the rotational stability of fusion constructs using bisegmental fixation of Th12-L2 vertebrae with anterior stabilization or pedicle screw fixation.Material and Methods The strength, rigidity and limit of elasticity in the “injured vertebral motion segments (VMS) – bisegmental anterior stabilization” system under dislocating rotational loads were estimated. The data obtained were compared with the similar characteristics of the “injured VMS – bisegmental 4-screw transpedicular metal construction” system and intact spine segments.Results Under rotational loads the limits of elasticity of injured spine segments of Th12-L2 with anterior stabilization and transpedicular screw fixation (TSF) is 45.5 and 41.7%, respectively, and the general strength is 66.4% and 80%, respectively, as compared with those intact VMS. Rigidity parameters of anterior-stabilized and pedicle screw fixated VMS with unstable damage of L1 are 60.2 and 93.9%, accordingly, in comparison with those intact VMS.Conclusion No significant differences were observed between bisegmental anterior stabilization and bisegmental pedicle screw fixation of thoracolumbar junction in terms of the key mechanical properties. When treating patients with unstable thoracolumbar spine injuries using bisegmental anterior stabilization or transpedicular fixation with 4-screw spinal system possible rotation motion amplitude of operated segments must not exceed 50% of maximum physiological limits.
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Badgery, W., G. Millar, K. Broadfoot, J. Martin, D. Pottie, A. Simmons, and P. Cranney. "Better management of intensive rotational grazing systems maintains pastures and improves animal performance." Crop and Pasture Science 68, no. 12 (2017): 1131. http://dx.doi.org/10.1071/cp16396.

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Grazing management has been identified as a means of increasing livestock production and improving the composition of perennial pastures. The benefits of intensive rotational grazing have been the subject of much debate, but few studies have evaluated contrasting management of intensive rotational systems. A grazing management experiment was established on a pasture with cocksfoot (Dactylis glomerata L., varieties Porto and Kara) as the dominant species, to investigate different stocking rates, paddock numbers and rotation speeds, and a flexible treatment that adjusted grazing time, rest periods and stock numbers for optimal pasture utilisation. Data were collected on pasture composition and diet quality assessed by using faecal analysis, animal weight changes and pasture characteristics. Animal production per hectare was greatest for fast rotations (56 days’ rest) at high stocking rates (HStR, 13.6 dry sheep equivalents (DSE) ha–1), but continuous grazing (CG) was equally productive. Although flexible grazing based on the 3–4-leaf stage was proposed as the best balance between pasture production and quality, this treatment had lower stocking rates (9.2 DSE ha–1) and was not as productive. No treatment negatively affected pasture composition over the 4-year period. Area of bare ground was highest for the HStR CG treatment; however, the 30-paddock rotations were able to limit bare ground at the same stocking rate. The results indicated that intensive rotational grazing could be effectively managed by using green herbage allowance. In spring, green herbage allowance needed to be 1–1.5 kg green dry matter (DM) DSE–1 day–1, which increased to 5 kg green DM DSE–1 day–1 as the quality of green DM decreased, to allow selective grazing to enhance diet quality.
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Ramanathan, Jayakumar. "The Existence and Structure of Rotational Systems in the Circle." Abstract and Applied Analysis 2018 (June 3, 2018): 1–11. http://dx.doi.org/10.1155/2018/8752012.

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By a rotational system, we mean a closed subset X of the circle, T=R/Z, together with a continuous transformation f:X→X with the requirements that the dynamical system (X,f) be minimal and that f respect the standard orientation of T. We show that infinite rotational systems (X,f), with the property that map f has finite preimages, are extensions of irrational rotations of the circle. Such systems have been studied when they arise as invariant subsets of certain specific mappings, F:T→T. Because our main result makes no explicit mention of a global transformation on T, we show that such a structure theorem holds for rotational systems that arise as invariant sets of any continuous transformation F:T→T with finite preimages. In particular, there are no explicit conditions on the degree of F. We then give a development of known results in the case where Fθ=d·θmod⁡1 for an integer d>1. The paper concludes with a construction of infinite rotational sets for mappings of the unit circle of degree larger than one whose lift to the universal cover is monotonic.
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Soong, C. Y. "Thermal Buoyancy Effects in Rotating Non-Isothermal Flows." International Journal of Rotating Machinery 7, no. 6 (2001): 435–46. http://dx.doi.org/10.1155/s1023621x01000380.

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The present paper is concerned with the non-isothermal flow mechanisms in rotating systems with emphasis on the rotation-induced thermal buoyancy effects stemming from the coexistence of rotational body forces and the nonuniformity of the fluid temperature field. Non-isothermal flow in rotating ducts of radial and parallel modes and rotating cylindrical configurations, including rotating cylinders and disk systems, are considered. Previous investigations closely related to the rotational buoyancy are surveyed. The mechanisms of the rotation-induced buoyancy are manifested by the author's recent theoretical results and scaling analyses pertaining to the rotation-induced buoyancy in rotating ducts and two-disk systems. Finally, the open issues for future researches in this area are proposed.
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Tautges, Nicole E., Ian C. Burke, Kristy Borrelli, and E. Patrick Fuerst. "Competitive ability of rotational crops with weeds in dryland organic wheat production systems." Renewable Agriculture and Food Systems 32, no. 1 (February 1, 2016): 57–68. http://dx.doi.org/10.1017/s1742170516000028.

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AbstractWhile demand continues to grow and prices for organic grains have remained almost double those of conventional grains, few growers in the dryland wheat production region of Eastern Washington produce organic grain. Growers have cited weed control constraints as a top factor preventing adoption of organic production practices. In organic systems, inherent competitive ability of crops is very important in managing and preventing weed infestations. The objective of this study was to identify crop species that could reduce weed pressure and compete with perennial weeds in a wheat (Triticum aestivum) rotation. To assess weed suppressive ability of alternative rotational crops, relative total weed biomass and relative biomass of two perennial and three annual weed species were examined over 4 years in three organic cropping systems where winter wheat was in rotation with alternative crops, as part of a long-term study examining dryland organic wheat production. Three years of continuous alfalfa (Medicago sativa) production reduced Canada thistle (Cirsium arvense) biomass during the alfalfa production phase, and reduced Canada thistle biomass in winter wheat following alfalfa, compared with wheat following winter pea (Pisum sativum). Alfalfa was competitive with wild oat (Avena fatua), though it competed poorly with winter annual grass weeds. Spring barley (Hordeum vulgare), when established successfully, suppressed jointed goatgrass (Aegilops cylindrica) more than winter triticale (xTriticosecale), winter wheat, and spring wheat, and demonstrated some competitiveness toward field bindweed (Convolvulus arvensis). Winter triticale competed poorly with field bindweed, but suppressed Canada thistle and downy brome (Bromus tectorum). All alternative rotational crops contained lower weed biomass than winter pea, the crop typically rotated with wheat in the region. Organic and conventional growers could gain benefits in perennial and winter annual weed suppression by incorporating alternative rotational crops into wheat rotations.
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Dissertations / Theses on the topic "Rotational systems"

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Tran, Quan Duc. "Tricyclic Steiner Triple Systems with 1-Rotational Subsystems." Digital Commons @ East Tennessee State University, 2007. https://dc.etsu.edu/etd/2102.

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A Steiner triple system of order v, denoted STS(v), is said to be tricyclic if it admits an automorphism whose disjoint cyclic decomposition consists of three cycles. In this thesis we give necessary and sufficient conditions for the existence of a tricyclic STS(v) when one of the cycles is of length one. In this case, the STS(v) will contain a subsystem which admits an automorphism consisting of a fixed point and a single cycle. The subsystem is said to be 1-rotational.
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Horton, Bryan. "Rotational motion of pendula systems for wave energy extraction." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25873.

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Sinclair, Andrew James. "Generalization of rotational mechanics and application to aerospace systems." Texas A&M University, 2002. http://hdl.handle.net/1969.1/2274.

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This dissertation addresses the generalization of rigid-body attitude kinematics, dynamics, and control to higher dimensions. A new result is developed that demonstrates the kinematic relationship between the angular velocity in N-dimensions and the derivative of the principal-rotation parameters. A new minimum-parameter description of N-dimensional orientation is directly related to the principal-rotation parameters. The mapping of arbitrary dynamical systems into N-dimensional rotations and the merits of new quasi velocities associated with the rotational motion are studied. A Lagrangian viewpoint is used to investigate the rotational dynamics of N-dimensional rigid bodies through Poincar??e??s equations. The N-dimensional, orthogonal angularvelocity components are considered as quasi velocities, creating the Hamel coefficients. Introducing a new numerical relative tensor provides a new expression for these coefficients. This allows the development of a new vector form of the generalized Euler rotational equations. An N-dimensional rigid body is defined as a system whose configuration can be completely described by an N??N proper orthogonal matrix. This matrix can be related to an N??N skew-symmetric orientation matrix. These Cayley orientation variables and the angular-velocity matrix in N-dimensions provide a new connectionbetween general mechanical-system motion and abstract higher-dimensional rigidbody rotation. The resulting representation is named the Cayley form. Several applications of this form are presented, including relating the combined attitude and orbital motion of a spacecraft to a four-dimensional rotational motion. A second example involves the attitude motion of a satellite containing three momentum wheels, which is also related to the rotation of a four-dimensional body. The control of systems using the Cayley form is also covered. The wealth of work on three-dimensional attitude control and the ability to apply the Cayley form motivates the idea of generalizing some of the three-dimensional results to Ndimensions. Some investigations for extending Lyapunov and optimal control results to N-dimensional rotations are presented, and the application of these results to dynamical systems is discussed. Finally, the nonlinearity of the Cayley form is investigated through computing the nonlinearity index for an elastic spherical pendulum. It is shown that whereas the Cayley form is mildly nonlinear, it is much less nonlinear than traditional spherical coordinates.
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Akin, Faith W., Owen D. Murnane, Stephanie M. Byrd, and J. K. Kelly. "A Comparison of the Subjective Visual Vertical across Rotational Chair Systems and Off-Axis Rotation Protocols." Digital Commons @ East Tennessee State University, 2011. https://dc.etsu.edu/etsu-works/2466.

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Clunas, Scott. "The synthesis of chiral C←3-symmetric systems." Thesis, University of Aberdeen, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310643.

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Chapter one is an overall introduction reviewing the applications of compounds possessing rotational symmetry, in particular their role as asymmetric reagents/catalysts in various reactions. The attempted syntheses of two different types of C3-symmetric homochiral triols are described in chapter two. Unfunctionalised and functionalised triamides were synthesised from the corresponding amine and 1,3,5-benzenetricarbonyl trichloride. Unfunctionalised N-substituted 1,3,5-triazacychlohexanes (triazines) were synthesised from the corresponding amine and formaldehyde, however reactions between chiral amino alcohols and formaldehyde failed to give the desired trihydroxy triazines. Chapter three describes the syntheses of a range of unfunctionalised chiral C3-symmetric compounds, as well as a review of C3-symmetric systems as host molecules. The successful synthesis of a range of unfunctionalised triethrs was carried out by reacting 1,3,5-tris(bromomehyl)mesitylene with some selected terpenes and other alcohols. Their role as host molecules was investigated, however they failed to bind with any of the various metals that were used. Their asymmetric induction capabilities were also tested when one of the triethers was used as a catalyst in the Et2Zn/aldehyde reaction. The desired alcohol was indeed isolated, however it was found by 1H nmr of the Mosher's ester to be a reacemic mixture. In chapter four the synthesis of the unfunctionalised triethers that was described in chapter three was extended to the synthesis of C3-symmetric triethers containing functional groups. A range of tridentate ligands were synthesised containing either amino, ester, keto or hydroxyl terminal groups. In addition to these, trihydroxy ligands containing amino linkages in place of ethereal linkages were also synthesised. From these compounds three of the trihydroxy ligands were used in complexation reactions with Sn, Ti, Si, Ni, and Cu. The reactions using Si, Ni and Cu failed to give the desired complexes. However, strong evidence was obtained for the existence of the desired Sn and Ti complexes. Once again using the Et2Zn/aldehyde reaction preliminary asymmetric induction studies were carried out using one of the Ti complexes. The reaction showed some selectivity in favour of the R enantiomer. Chapter four also describes the syntheses of some hexadentate ligands, in particular the synthesis of a chiral C3-symmetric hexol, a C3-symmetric ligand containing three β keto-ester groups, and also a 1,3-diketo derivative.
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Cowan, John D. "A billiard model for a gas of particles with rotation /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2004.

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Thesis (Ph.D.)--Tufts University, 2004.
Adviser: Boris Hasselblatt. Submitted to the Dept. of Mathematics. Includes bibliographical references (leaves 61-62). Access restricted to members of the Tufts University community. Also available via the World Wide Web;
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Szczesny, Spencer E. 1981. "Design of compliant mechanisms for attenuation of unidirectional vibrations in rotational systems." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/27880.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Includes bibliographical references (leaves 146-148).
The purpose of this research was to generate the knowledge required to design compliant mechanisms that (1) attenuate undesired small-motion angular vibrations in rotational power transmission systems and (2) preserve the desired transmission of large-motion torque/angle inputs. This thesis investigates the design of vibration attenuating compliant mechanisms that are directly integrated into the load path of rotational systems. These devices enable designers to attenuate the amplitude of undesirable vibrations while simultaneously optimizing the transmission of torque inputs. The design, modeling, fabrication and experimental validation of two Compliant Vibration Attenuator (CVA) concepts will be presented. The first device, the Small Amplitude Vibration Isolator (SAVI), is a non-linear compliant device that isolates a resonating or non-resonating rotational system from vibrations by acting as a mechanical lowpass filter. The second device, the Damping Vibration Link (DVL) utilizes compliance and damping to attenuate undesired vibrations due to resonance. A linear lumped parameter model was created in Matlab® to simulate the static and dynamic characteristics of rotational power transmission systems. This model enables one to determine the dynamic characteristics of a system for a given set of inputs, thereby making it possible to (1) understand the requirements for the CVA and (2) ascertain the effect of the CVA on the system. Finite-element simulations were conducted to verify an empirical, parametric model that describes the performance of a SAVI as a function of its stiffness parameters.
(cont.) Proof-of-concept prototypes were tested to verify performance predictions and to determine the practical issues related to implementation. The thesis concludes with a case study which demonstrates the effectiveness of a SAVI when integrated into the steering system of a light-duty pickup truck. The SAVI was shown to offer a 60% reduction in vibration amplitude by trading off 7 ms of delay in steering wheel-vehicle response.
by Spencer E. Szczesny.
S.M.
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Kravchenko, Anatoliy G. "Overcoming the rotational antagonism of corn following wheat in high residue cropping systems." Diss., Connect to online resource - MSU authorized users, 2006.

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Thesis (M. S.)--Michigan State University. Dept. of Crop and Soil Sciences, 2006.
Title from PDF t.p. (viewed on June 19, 2009) Includes bibliographical references (p. 94-99). Also issued in print.
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Huysamen, Kirsten Christina. "Validation of an assessment tool for mental fatigue applied to rotational shift work." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1013551.

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Mental fatigue has been proven to be highly prominent during shift work, due to long, irregular working hours and disruption of the circadian rhythm. Measuring mental fatigue has been a challenge for many years, where commonly cognitive test tasks are used to assess mental fatigue. Moreover, these test tasks do not isolate where fatigue is occurring during human information processing. The human information processing system consists of four core stages, each of which requires numerous cognitive functions in order to process information. The Human Kinetics and Ergonomics Department at Rhodes University has developed six cognitive test tasks where each isolates a cognitive function: an accommodation test task, a visual detection test task, a reading test task, a memory test task, a tapping test task and a neural control test task. The cognitive functions include: eye accommodation, visual discrimination, visual pattern recognition, memory duration, motor programming and peripheral neural control. General task-related effect can also be examined for each of these cognitive test tasks which include choice reaction time, visual detection, reading performance, short-term memory, motor control and tracking performance. Additionally, a simple reaction time test task has been developed to analyse simple reaction time. This test task does not isolate a cognitive function. One or more parameters can be examined for each cognitive function and task-related effect. The first aim of this study was to validate numerous cognitive test tasks for mental fatigue in a simulated shift work laboratory setting. The second aim was to assess the validated cognitive test tasks in Phase 1 in a field-based rotational shift work setting. Parameters revealing sensitivity to mental fatigue would be validated for mental fatigue applied to rotational shift work and would be inserted into an assessment tool. In the laboratory setting, the seven cognitive test tasks were examined on four different types of shift work regimes. The first regime was a standard eight-hour shift work system, and the other three were non-conventional shift work regimes. Participants (n = 12 per regime) were required to complete one day shift followed by four night shifts, where testing occurred before and after each shift and four times within each shift. The cognitive test tasks revealing sensitivity to fatigue included: visual detection test task, reading test task, memory test task, tapping test task, neural control test task and simple reaction time test task. The testing of Phase 2 was conducted in three different companies, where each performed a different type of rotational shift work. The six cognitive test tasks validated for mental fatigue in Phase 1 were tested before and after work for each shift type within the rotational shift work system adopted by each company. Company A (n = 18) and Company B (n = 24) performed two-shift rotational shift work systems, where the shift length of Company A was 12-hours and the shift length of Company B was irregular hours. Company C (n = 21) performed an eight-hour three-shift rotational shift work system. Nine parameters revealed fatiguing effects and were inserted into the assessment tool, five of which provided information on a specific cognitive function: error rate for visual discrimination, processing time for visual pattern recognition, error rate for visual pattern recognition, impact of rehearsal time on memory recall rate for memory duration and the high-precision condition for motor programming time. The remaining four parameters provided information on general task-related effects: reading speed for reading performance, recall rate for short-term memory, reaction time for motor control and simple reaction time. Therefore, an assessment tool comprising nine parameters was validated for mental fatigue applied to rotational shift work, where five of the parameters were able to isolate exactly where fatigue was occurring during human information processing and the other four parameters were able to assess fatigue occurring throughout the human information processing chain.
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Cakar, F. selcen. "A Study Of Precoding Schemes For Ofdm Systems." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609916/index.pdf.

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We examine the effect of precoding on OFDM systems. The precoding operation, which is also known as constellation rotation, leads to a gain in diversity order for fading channels. In this thesis, we examine the effect of precoding for different receivers such as Maximum Likelihood (ML), Minimum Mean Squared Error (MMSE), and Zero Forcing (ZF) receivers. The diversity gain due to precoding comes at no cost of bandwidth expansion or power increase. Therefore it is an attractive and practical alternative. We also examine the precoding gain, when some reduction of rate is tolerable and compare the performance of rate reduced system with the uncoded system with the system which is coded by rateless unitary precoders, and with the hard-decision decoded BCH coded coded system.
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Books on the topic "Rotational systems"

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Rehahn, M. Rotational isomeric state models in macromolecular systems. Berlin: Springer, 1997.

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Rehahn, M., W. L. Mattice, and U. W. Suter. Rotational Isomeric State Models in Macromolecular Systems. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/bfb0050955.

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Ovchinnikov, A. A., N. S. Erikhman, and K. A. Pronin. Vibrational-Rotational Excitations in Nonlinear Molecular Systems. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1317-9.

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Ovchinnikov, A. A. Vibrational-Rotational Excitations in Nonlinear Molecular Systems. Boston, MA: Springer US, 2001.

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Junkins, John L. Optimal spacecraft rotational maneuvers. Amsterdam: Elsevier, 1986.

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T, Diep H., ed. Magnetic systems with competing interactions: Frustrated spin systems. Singapore: World Scientific, 1994.

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J, Thompson William. Angular momentum: An illustrated guide to rotational symmetries for physical systems. New York: Wiley, 1994.

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Bach, Ralph E. Direct inversion of rigid-body rotational dynamics. Moffett Field, Calif: National Aeronautics and Space Administration, Ames Research Center, 1990.

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1935-, Suter U., ed. Conformational theory of large molecules: The rotational isomeric state model in macromolecular systems. New York: Wiley, 1994.

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W, Wang K., Segalman Dan, American Society of Mechanical Engineers. Design Engineering Division., and Conference on Mechanical Vibration and Noise (14th : 1993 : Albuquerque, N.M.), eds. Vibration of rotating systems: Presented at the 1993 ASME design technical conferences, 14th Biennial Conference on Mechanical Vibration and Noise, Albuquerque, New Mexico, September 19-22, 1993. New York: American Society of Mechanical Engineers, 1993.

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Book chapters on the topic "Rotational systems"

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Lessard, Charles S. "Mechanical Rotational Systems." In Basic Feedback Controls in Biomedicine, 16–24. Cham: Springer International Publishing, 2009. http://dx.doi.org/10.1007/978-3-031-01634-9_3.

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Xin, Xin, and Yannian Liu. "Rotational Pendulum." In Control Design and Analysis for Underactuated Robotic Systems, 109–25. London: Springer London, 2014. http://dx.doi.org/10.1007/978-1-4471-6251-3_6.

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Dong, Ronald Y. "Rotational and Translational Dynamics." In Partially Ordered Systems, 189–232. New York, NY: Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-1954-5_7.

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Dong, Ronald Y. "Rotational and Translational Dynamics." In Partially Ordered Systems, 175–211. New York, NY: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4684-0208-7_7.

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Igel, Heiner, Moritz Bernauer, Joachim Wassermann, and Karl Ulrich Schreiber. "Seismology, Rotational, Complexity." In Encyclopedia of Complexity and Systems Science, 1–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27737-5_608-1.

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Afghani Khoraskani, Roham. "Rotational Friction Connection." In Advanced Connection Systems for Architectural Glazing, 69–83. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-12997-6_6.

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French, A. P., and M. G. Ebison. "Extended systems and rotational dynamics." In Introduction to CLASSICAL MECHANICS, 255–99. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4119-9_10.

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Guha, Debajyoti, Rajdeep Chakraborty, and J. K. Mandal. "Rotational Cryptographic Technique (RCT)." In Learning and Analytics in Intelligent Systems, 150–56. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-42363-6_18.

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Davies, Matthew A., and Tony L. Schmitz. "Transient Rotational Motion of Mechanical Systems." In System Dynamics for Mechanical Engineers, 123–63. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-9293-1_5.

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Jiang, Zhike. "(F, 2)—Rotational Steiner Triple Systems." In Combinatorics Advances, 181–206. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4613-3554-2_11.

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Conference papers on the topic "Rotational systems"

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Hederic, Zeljko, Marinko Barukcic, Tin Bensic, Dejan Baresic, and Adamir Jahic. "Round rotational single sheet tester for rotational core loss measurements." In 2017 International Conference on Smart Systems and Technologies (SST). IEEE, 2017. http://dx.doi.org/10.1109/sst.2017.8188718.

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Sone, Junji, Yuuki Hosono, Tomoaki Nakajima, Katsumi Yamada, and Kinya Fujita. "Feasibility study of a rotational haptic display - rotational action and measuring the rotational moment at the wrist -." In World Haptics 2009 - Third Joint EuroHaptics conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems. IEEE, 2009. http://dx.doi.org/10.1109/whc.2009.4810911.

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Berri, Sidi M. "Rotational Vibration Response of Power Transmission Systems." In 2002 4th International Pipeline Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ipc2002-27285.

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The main goal of monitoring systems for rotary machinery is to provide sufficient time between warning and failure of machine elements so that safety procedures can be implemented. The present study investigates the dynamics of transmission systems by interpreting the interaction dynamic loads of the elements of the system. This phase of the effort concerns itself with the determination of the relationship of the dynamic tooth loads to the crack size of a single cracked tooth of a spur gear pair. A mathematical model of the test rig used for the general study is proposed. In addition to accounting for the time-varying stiffness of the meshing tooth pair, the model also includes gear errors and damping. A Newmark-Beta numerical integration scheme is used to solve the system of non-linear coupled equations. Results for the dynamic tooth loads as a function of crack size are presented for a wide range of rotational speeds. Simulated and experimental vibrational signals are also presented.
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Sui, Wenbo, Jinyun Li, Guozhi Chai, Changjun Jiang, and Desheng Xue. "Analysis on magnetization rotational process in exchange-bias bilayers with rotational magnetization curve approach." In 2016 3rd International Conference on Systems and Informatics (ICSAI). IEEE, 2016. http://dx.doi.org/10.1109/icsai.2016.7811027.

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Benjanarasuth, Taworn, and Songmoung Nundrakwang. "Hybrid controller for rotational inverted pendulum systems." In SICE 2008 - 47th Annual Conference of the Society of Instrument and Control Engineers of Japan. IEEE, 2008. http://dx.doi.org/10.1109/sice.2008.4654969.

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Crabtree, Daniel L. "Velocity profiling in linear and rotational systems." In Orlando '91, Orlando, FL, edited by Michael K. Masten and Larry A. Stockum. SPIE, 1991. http://dx.doi.org/10.1117/12.45720.

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Martins, T. C., and M. S. G. Tsuzuki. "Solving Irregular Rotational Knapsack Problems." In Seventh International Conference on Intelligent Systems Design and Applications (ISDA 2007). IEEE, 2007. http://dx.doi.org/10.1109/isda.2007.4389691.

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Martins, T. C., and M. S. G. Tsuzuki. "Solving Irregular Rotational Knapsack Problems." In Seventh International Conference on Intelligent Systems Design and Applications (ISDA 2007). IEEE, 2007. http://dx.doi.org/10.1109/isda.2007.57.

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Cheng, Chih-Cheng, Tien-Kan Chung, Chin-Chung Chen, and Hsin-Min Wang. "A Novel Thermomagnetic Rotational-Actuator." In ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/smasis2015-9031.

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In this article, we demonstrate a novel thermomagnetic rotational-actuator. The actuator consists of thermomagnetic material Gadolinium sheets, thermoelectric generators, a rotary aluminum cantilever beam with NdFeB hard magnets fixed on the free-end of the beam, a stainless steel bearing, and a mechanical frame. As conventional magnetic rotational-actuators are controlled by using electromagnetic-induction-based magnetic-force interaction produced by electromagnets or coils, our actuator is controlled by using a heating-induced magnetic force interaction produced by the thermomagnetic generators. Experimental results show that our actuator is successfully rotated by a controlled sequence of temperature-difference generated by the TEGs.
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Holland, Andrew D., Mark S. Cropper, David Katz, Ian B. Hutchinson, Richard M. Ambrosi, Tim J. Stevenson, David R. Smith, et al. "CCDs for the rotational velocity spectrometer on GAIA." In Optical Systems Design, edited by Jean-Pierre Chatard and Peter N. J. Dennis. SPIE, 2004. http://dx.doi.org/10.1117/12.517151.

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Reports on the topic "Rotational systems"

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Chen, Kuangcai. Development and applications of single particle orientation and rotational tracking in dynamic systems. Office of Scientific and Technical Information (OSTI), February 2016. http://dx.doi.org/10.2172/1342544.

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Thornell, Travis, Charles Weiss, Sarah Williams, Jennifer Jefcoat, Zackery McClelland, Todd Rushing, and Robert Moser. Magnetorheological composite materials (MRCMs) for instant and adaptable structural control. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38721.

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Magnetic responsive materials can be used in a variety of applications. For structural applications, the ability to create tunable moduli from relatively soft materials with applied electromagnetic stimuli can be advantageous for light-weight protection. This study investigated magnetorheological composite materials involving carbonyl iron particles (CIP) embedded into two different systems. The first material system was a model cementitious system of CIP and kaolinite clay dispersed in mineral oil. The magnetorheological behaviors were investigated by using parallel plates with an attached magnetic accessory to evaluate deformations up to 1 T. The yield stress of these slurries was measured by using rotational and oscillatory experiments and was found to be controllable based on CIP loading and magnetic field strength with yield stresses ranging from 10 to 104 Pa. The second material system utilized a polystyrene-butadiene rubber solvent-cast films with CIP embedded. The flexible matrix can stiffen and become rigid when an external field is applied. For CIP loadings of 8% and 17% vol %, the storage modulus response for each loading stiffened by 22% and 74%, respectively.
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Bauman, L. E., and W. Wang. Faraday rotation system. Topical report. Office of Scientific and Technical Information (OSTI), July 1994. http://dx.doi.org/10.2172/10166706.

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Vargo, G. F. Jr. System design description for the HMT Rotation Motor Heater System. Office of Scientific and Technical Information (OSTI), May 1995. http://dx.doi.org/10.2172/78645.

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Al-Kaisi, Mahdi, and Mark A. Licht. Impact of Tillage and Crop Rotation Systems on Carbon Sequestration. Ames: Iowa State University, Digital Repository, 2001. http://dx.doi.org/10.31274/farmprogressreports-180814-2405.

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Licht, Mark A., and Mahdi Al-Kaisi. Evaluation of Three Tillage Systems under a Corn and Soybean Rotation. Ames: Iowa State University, Digital Repository, 2003. http://dx.doi.org/10.31274/farmprogressreports-180814-1258.

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Liebman, Matthew Z., Robert G. Hartzler, Paula R. Westerman, Fabián D. Menalled, Andrew Howard Heggenstaller, and Philip M. Dixon. Velvetleaf Responses to 2-Year and 4-Year Crop Rotation Systems. Ames: Iowa State University, Digital Repository, 2004. http://dx.doi.org/10.31274/farmprogressreports-180814-1808.

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Al-Kaisi, Mahdi, and Mark A. Licht. Impact of Tillage and Crop Rotation Systems on Soil Carbon Storage. Ames: Iowa State University, Digital Repository, 2002. http://dx.doi.org/10.31274/farmprogressreports-180814-284.

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Hanlon, J., and H. Ziock. Using geometric algebra to understand pattern rotations in multiple mirror optical systems. Office of Scientific and Technical Information (OSTI), May 1997. http://dx.doi.org/10.2172/468622.

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Hodges, J. W. Short Rotation Woody Crops Program computerized technical data base system. Office of Scientific and Technical Information (OSTI), March 1986. http://dx.doi.org/10.2172/6258368.

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