Afterword

2021 ◽  
pp. 185-188
Author(s):  
Simon Park
Keyword(s):  
Practical Constraints

With reference to an emblem by Andrea Alciato, the afterword draws out the tensions between poets’ aspirations (both poetic and social) in the period and the practical constraints that weighed them down which lie at the heart of the preceding chapters. It returns to the idea of a ‘pragmatics of poetry’ that was set out in the introduction, restating the aim of this study to consider the practicalities around making poetry (finding time to write it, making a living from it, printing books of it) and the different contexts in which poetry was written, copied, gifted, swapped, and sold, in order to grasp what poets thought the value of their art was or ought to be.

SEM at Low Beam Voltage

1984 ◽  
Vol 42 ◽  
pp. 440-443
Author(s):  
James Pawley
Keyword(s):  
Low Voltage ◽  
Probe Diameter ◽  
Small Probe ◽  
Beam Voltage ◽  
Practical Constraints

Operation of the SEM with V0 = l-3kV (LVSEM) was early recognized to reduce charging artefacts and increase topographic contrast. This early promise was not pursued because several theoretical and practical considerations made it difficult to produce a small probe diameter (d0) at low voltage. Recently, the necessity of using low V0 to image uncoated semiconductors without damaging them has prompted a re-evaluation of LVSEM. This re-evaluation has taken the form of efforts to eliminate the practical constraints and to alleviate the theoretical ones. In the process, some heretofore neglected theoretical advantages of LVSEM have emerged. These problems and possibilities will now be discussed in more detail.

Nutrient-Use Patterns in Nursery Crops

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 557a-557
Author(s):  
Mary Ann Rose ◽  
Barbara Biernacka
Keyword(s):  
Nutrient Retention ◽  
The United States ◽  
Soil Conditions ◽  
Woody Ornamentals ◽  
Use Patterns ◽  
Nutrient Demand ◽  
Nutrient Use ◽  
Fertilizer Recommendations ◽  
Retention Characteristics ◽  
Practical Constraints

Long-standing fertilizer recommendations for field-grown nursery and landscape ornamentals are based on maximizing growth, not nutrient efficiency. Further, these recommendations fall short because of failure to consider 1) the extent of crop nutrient removal, 2) varying nutrient retention characteristics of soils across the United States, and 3) a body of research that suggests that woody ornamentals have a limited response to fertilization under most soil conditions. Concern for the environmental impact of fertilization justifies a reevaluation of current nursery fertilization practices, as well a discussion of the practical constraints on the adoption of new approaches, e.g., nutrient demand-driven fertilization. Research on the nutrient use patterns of woody plants will be reviewed with emphasis on implications for increasing fertilization efficiency. OSU research on water availability and nutrient-use interactions also will be presented.

Uniformly ultimately bounded tracking control of sandwich systems with nonsymmetric sandwiched dead-zone nonlinearity and input saturation constraint

2021 ◽  
pp. 107754632098794
Author(s):  
Meysam Azhdari ◽  
Tahereh Binazadeh
Keyword(s):  
Dead Zone ◽  
Input Saturation ◽  
Closed Loop System ◽  
Unknown Parameters ◽  
External Disturbances ◽  
Uniformly Ultimately Bounded ◽  
Output Tracking ◽  
Saturation Constraint ◽  
Two Phases ◽  
Practical Constraints

This article studies the uniformly ultimately bounded output tracking problem of uncertain nonlinear sandwich systems with sandwiched dead-zone nonlinearity in the presence of some practical constraints such as nonsymmetric input saturation, model uncertainties, time-varying external disturbances, and unknown parameters. Due to the existence of both dead-zone and saturation nonlinearities, the design process is more complicated; therefore, to solve the design complexities, the designing process is divided into two phases. The proposed method leads to output tracking with acceptable accuracy. Moreover, all signals in the closed-loop system are ultimately bounded. Simulation results illustrate the applicability and effectiveness of the proposed method by its application on two practical sandwich systems (robotic system and electrohydraulic servo press system).

scholarly journals Nuclear mass measurements with radioactive ion beams

2019 ◽  
Vol 28 (04) ◽  
pp. 1930005 ◽  
Author(s):  
Michael A. Famiano
Keyword(s):  
Mass Measurement ◽  
Measurement Techniques ◽  
Nuclear Mass ◽  
Mass Measurements ◽  
Future Directions ◽  
Advantages And Disadvantages ◽  
Nuclear Masses ◽  
Under Construction ◽  
Very High ◽  
Practical Constraints

Nuclear masses are the most fundamental of all nuclear properties, yet they can provide a wealth of knowledge, including information on astrophysical sites, constraints on existing theory, and fundamental symmetries. In nearly all applications, it is necessary to measure nuclear masses with very high precision. As mass measurements push to more short-lived and more massive nuclei, the practical constraints on mass measurement techniques become more exacting. Various techniques used to measure nuclear masses, including their advantages and disadvantages are described. Descriptions of some of the world facilities at which the nuclear mass measurements are performed are given, and brief summaries of planned facilities are presented. Future directions are mentioned, and conclusions are presented which provide a possible outlook and emphasis on upcoming plans for nuclear mass measurements at existing facilities, those under construction, and those being planned.

scholarly journals A maximin model for IRT-based test design with practical constraints

Psychometrika ◽  
1989 ◽  
Vol 54 (2) ◽  
pp. 237-247 ◽  
Author(s):  
Wim J. van ver Linden ◽  
Ellen Boekkooi-Timminga
Keyword(s):  
Test Design ◽  
Practical Constraints

scholarly journals Teachers as researchers? Assessing impact of pedagogical interventions on pupils’ attitudes

Human Affairs ◽  
2016 ◽  
Vol 26 (3) ◽  
Author(s):  
Peter Dráľ ◽  
Andrej Findor
Keyword(s):  
Intergroup Relations ◽  
Pedagogical Interventions ◽  
Practical Constraints

AbstractThe paper suggests that there is a gap between the research on prejudice in Slovak schools and the pedagogical interventions used to reduce them, particularly in relation to the Roma minority. It highlights the existing curricular requirements for dealing with intergroup relations, stereotypes and prejudice, contrasting them with the organizational, methodological and practical constraints teachers face when trying to meet them. Drawing from experience of piloting alternative tools for measuring attitudes, designing interventions and assessing impact, the article describes one possible way of bridging the gap.

AN EFFICIENT APPROACH FOR THE THREE-DIMENSIONAL CONTAINER PACKING PROBLEM WITH PRACTICAL CONSTRAINTS

2004 ◽  
Vol 21 (03) ◽  
pp. 279-295 ◽  
Author(s):  
ZHIHONG JIN ◽  
KATSUHISA OHNO ◽  
JIALI DU
Keyword(s):  
Three Dimensional ◽  
Real Life ◽  
Packing Problem ◽  
Utilization Rate ◽  
Benchmark Problems ◽  
Rectangular Container ◽  
Efficient Packing ◽  
High Degree ◽  
Practical Constraints ◽  
Inherent Stability

This paper deals with the three-dimensional container packing problem (3DCPP), which is to pack a number of items orthogonally onto a rectangular container so that the utilization rate of the container space or the total value of loaded items is maximized. Besides the above objectives, some other practical constraints, such as loading stability, the rotation of items around the height axis, and the fixed loading (unloading) orders, must be considered for the real-life 3DCPP. In this paper, a sub-volume based simulated annealing meta-heuristic algorithm is proposed, which aims at generating flexible and efficient packing patterns and providing a high degree of inherent stability at the same time. Computational experiments on benchmark problems show its efficiency.

Sign in / Sign up

Export Citation Format

Share Document