Academic literature on the topic 'Limiting idea'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Limiting idea.'

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 "Limiting idea"

1

Ledbetter, Cal. "Limiting legislative terms is a bad idea." National Civic Review 80, no. 3 (1991): 243–47. http://dx.doi.org/10.1002/ncr.4100800303.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Mayes, Robert. "Asymptotes and Other Limiting Functions." Mathematics Teacher 86, no. 5 (May 1993): 411–14. http://dx.doi.org/10.5951/mt.86.5.0411.

Full text
Abstract:
Mathematics and the way we teach it are undergoing dramatic changes. The NCTM's Curriculum and Evaluation Standards (1989) has determined a direction and focus for the future of mathematics education. The study of mathematics should be an active experience for students—one in which they explore the world of mathematics, make conjectures based on patterns discovered, and induce the mathematical concept. The idea of a guided-discovery approach for students in mathematics is hardly new. Socrates taught this way. However, he had the luxury of a lighter student load and no state or federal mandates on expected student outcomes. In short, Socrates had the time.
APA, Harvard, Vancouver, ISO, and other styles
3

Wu, Jianhong, and Huaxing Xia. "Existence of periodic solutions to integro-differential equations of neutral type via limiting equations." Mathematical Proceedings of the Cambridge Philosophical Society 112, no. 2 (September 1992): 403–18. http://dx.doi.org/10.1017/s0305004100071073.

Full text
Abstract:
AbstractIn this paper, we present some results on the existence of periodic solutions to Volterra integro-differential equations of neutral type. The main idea is to show the convergence of an equibounded sequence of periodic solutions of certain limiting equations which are of finite delay. This makes it possible to apply the existing Liapunov–Razumikhin technique for neutral equations with finite delay to obtain existence of periodic solutions of Volterra neutral integro-differential equations (of infinite delay). Some comparisons between our results and the existing ideas are also provided.
APA, Harvard, Vancouver, ISO, and other styles
4

Olofsson, Peter. "The xlogx condition for general branching processes." Journal of Applied Probability 35, no. 3 (September 1998): 537–44. http://dx.doi.org/10.1239/jap/1032265202.

Full text
Abstract:
The xlogx condition is a fundamental criterion for the rate of growth of a general branching process, being equivalent to non-degeneracy of the limiting random variable. In this paper we adopt the ideas from Lyons, Pemantle and Peres (1995) to present a new proof of this well-known theorem. The idea is to compare the ordinary branching measure on the space of population trees with another measure, the size-biased measure.
APA, Harvard, Vancouver, ISO, and other styles
5

Olofsson, Peter. "The xlogx condition for general branching processes." Journal of Applied Probability 35, no. 03 (September 1998): 537–44. http://dx.doi.org/10.1017/s0021900200016193.

Full text
Abstract:
The xlogx condition is a fundamental criterion for the rate of growth of a general branching process, being equivalent to non-degeneracy of the limiting random variable. In this paper we adopt the ideas from Lyons, Pemantle and Peres (1995) to present a new proof of this well-known theorem. The idea is to compare the ordinary branching measure on the space of population trees with another measure, the size-biased measure.
APA, Harvard, Vancouver, ISO, and other styles
6

Błachut, Michał. "Kryzys idei neutralności moralnej prawa." Studia nad Autorytaryzmem i Totalitaryzmem 43, no. 4 (December 31, 2021): 355–62. http://dx.doi.org/10.19195/2300-7249.43.4.27.

Full text
Abstract:
The idea of the moral neutrality of law is a characteristic element of liberal political and legal doctrines. This concept is also an element of constitutional principles regulating the limits of permissible legislative interference in the sphere of freedom. In such context, the bond linking it with the clearly defined axiology from which it derives is severed. The aim of this study is to consider to what extent the principle of the moral neutrality of law, being a principle affecting the activity of the legislator, retains its potential in identifying and limiting totalizing practices aimed at systematically limiting choices in the field of the concept of a good life and favouring a specific vision of the legal and political order in both spheres of human activity, individual and collective. The numerous variants of the moral neutrality of law formulated in political philosophy, and the distinctions between individual variants, in conjunction with the criticism of this concept, make it necessary to pay attention to whether this way of limiting totalizing practices is a good tool, resistant to the changing conditions. A review of critical arguments directed against the idea of neutrality leads to the conclusion that the weakening of the concept of the moral neutrality of law translates not only into its value in identifying and preventing totalizing practices, but also into weakening the protection of fundamental values, such as individual autonomy.
APA, Harvard, Vancouver, ISO, and other styles
7

Archer, Nathan. "Dictated by data?" Early Years Educator 21, no. 11 (March 2, 2020): 35–37. http://dx.doi.org/10.12968/eyed.2020.21.11.35.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Soto-Perez, Jaseph. "Inhibitory mechanisms control active expiration by limiting parafacial expiratory drive." Journal of Neurophysiology 125, no. 3 (March 1, 2021): 858–61. http://dx.doi.org/10.1152/jn.00507.2020.

Full text
Abstract:
Activity of parafacial neurons that control active expiration is heavily dependent on tonic and CO2/H+-dependent excitatory and inhibitory inputs from yet poorly defined sources. Contrary to the idea that CO2/H+ disinhibits parafacial expiratory neurons, the recent work of J. D. Silva et al. (Silva JD, Oliveira LM, Souza FC, Moreira TS, Takakura AC. J Neurophysiol 123: 1933–1943, 2020) suggests that GABAergic raphe neurons preferentially limit expiratory activity during high CO2. Here, I discuss these findings and propose a model where GABAergic raphe neurons function as CO2/H+-dependent breaks on expiratory drive.
APA, Harvard, Vancouver, ISO, and other styles
9

Shand, John. "Ideas in Music." Philosophy of Music 74, no. 4 (December 30, 2018): 1307–28. http://dx.doi.org/10.17990/rpf/2018_74_4_1307.

Full text
Abstract:
It is often taken for granted that music, whatever else it is able to do, cannot articulate ideas. This paper aims to refute that formalist claim and present an anti-formalist one showing why thinking formalism true is based on a fallacy and involves a misunderstanding of ordinary language. By ‘idea’ is meant a view, and reflection on that view, which in the limiting case may be a worldview, a Weltanschauung. That in this sense ideas are articulated in music is to say that they are, among other things, presented, conveyed and considered. This goes well beyond the usual anti-formalist claim that music may express emotions. The paper goes on to show how ideas may be articulated in music. This follows from properly understanding how it is that any idea may be articulated. Without music being able to include articulating ideas, the high artistic and cultural value we place upon music, as well as the way people actually talk about music, while being compatible with music having other features that we value, is inexplicable. In this sense the question is raised as to how it is possible to articulate ideas in music.
APA, Harvard, Vancouver, ISO, and other styles
10

Ryaboy, V. M. "Vibration Control Systems for Sensitive Equipment: Limiting Performance and Optimal Design." Shock and Vibration 12, no. 1 (2005): 37–47. http://dx.doi.org/10.1155/2005/916438.

Full text
Abstract:
As vibration control requirements become increasingly stringent, designers and users of vibration control equipment turn to devices and systems combining various physical mechanisms. Subsystems based on different physical effects can be combined to achieve the optimal performance for the application. Building an optimal product line that would cover a wide field of applications by combining several products, as opposed to creating one optimal device for a particular application, presents an optimum vibration control problem. This paper reviews optimum vibration control problems based on the idea of limiting performance, and discusses recent development of vibration control devices.
APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Limiting idea"

1

BARACCO, FLAVIO. "HERMANN WEYL AND HIS PHENOMENOLOGICAL RESEARCHES WITHIN INFINITESIMAL GEOMETRY." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/638166.

Full text
Abstract:
The present work focuses on the mathematical and philosophical works of Hermann Weyl (1885-1955). Weyl was a leading mathematician at the beginning of the twentieth century and his major contributions have concerned several fields of research, both within pure mathematics and theoretical physics. Many of them were pioneering works at that time and, most of all, they were carried out in the light of his peculiar philosophical view. As few mathematicians of his time, Weyl was able to manage both scientific and philosophical issues with an impressive competence. For this reason he represented a very peculiar figure among scientists and mathematicians of his time. This dissertation aims to clarify these works both from a philosophical and a mathematical perspective. Specifically, I will focus on those works developed through the years 1917-1927. The first chapter aims to shed some light on the philosophical reasons that underlie Weyl's foundational studies during this period. I will explore these works especially with respect his attempt to establish a connection between a descriptive analysis of phenomena and their exact determination. I will focus both on his mathematical formulation of Euclidean space and on his analysis of phenomenal continuum pointing out the main features of these studies. Weyl's investigations on the relations between what is intuitively given and the mathematical concepts through which we seek to construct the given in geometry and physics do not seem to be carried out by chance. These investigations indeed could be better understood within the phenomenological framework of Husserl's philosophy. Husserl's distinction between descriptive and exact concepts delineates the difference between a descriptive analysis of a field of inquiry and its exact determination. Clarifying how they are related is not an easy task. Nevertheless, Husserl points out that a connection might be possible if we were able to establish a connection by means of some idealizing procedure intuitively ascertained. Within this phenomenological framework we should interpret Weyl's investigations on the relation between phenomenal knowledge and theoretical construction. In the second chapter I will focus on Weyl's mathematical account of the continuum within the framework of his pure infinitesimal geometry developed mainly in \emph{Raum-Zeit-Materie}. It deserves a special attention. Weyl indeed seems to make use of infinitesimal quantities and this fact appears to be rather odd at that time. The literature on this issue is rather poor. For this reason I've tried to clarify Weyl's use of infinitesimal quantities considering also Weyl's historical context. I will show that Weyl's approach has not to be understood in the light of modern differential geometry. It has instead to be understood as a sort of algebraic reasoning with infinitesimal quantities. This approach was not so unusual at that time. Many mathematicians, well-known to Weyl, were dealing with kind of mathematics although many of these studies were works in progress. In agreement with that, Weyl's analysis of the continuum has to be understood as a work in progress as well. In the following Weyl's studies in combinatorial topology are proposed. I will then suggest that both these approaches should be understood within the phenomenological framework outlined in the first chapter. The latter, however, attempts to establish a more faithful connection between a descriptive analysis of the continuum and its exact determination and for this reason it can be regarded as an improvement with respect to the former from a phenomenological point of view. Finally, in the third chapter I will attempt a phenomenological clarification of Weyl's view. In the first and second chapter Weyl's studies are clarified showing how they are related with the phenomenological framework of Husserl's philosophy. Despite this, the theoretical proposal revealed by them is not so easy to understand. That issue seems to be shared by many other contemporary studies. The relevant literature on this author dealing with a phenomenological interpretation seems often to be hardly understandable. I'm going to outline the main problems involved in this field of research and how they are related with the peculiarity of Husserl's framework. I will then suggest a way to improve these studies. Specifically, I will attempt a phenomenological clarification of Weyl's writings. To this aim, I will argue for an approach that makes use of Husserl's writings as a sort of ``analytic tools'' so that a sort of phenomenologically-informed reconstruction of Weyl's thought can be achieved. I will finally consider Weyl's notion of surface as a case study to show a concrete example of this kind of reconstruction.
APA, Harvard, Vancouver, ISO, and other styles
2

Haines, Simon F. E. "A critical study of the poetry and prose of Percy Bysshe Shelley : illustrating the limiting effect of his ideas on his imagination." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303534.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Limiting idea"

1

Rodríguez García, Hernán Ferney. Contingencias del lenguaje. Bogotá. Colombia: Universidad de La Salle. Ediciones Unisalle, 2020. http://dx.doi.org/10.19052/9789585486812.

Full text
Abstract:
El lenguaje está en capacidad de configurar múltiples escenarios de interpretación que no se agotan en una solitaria crítica. Son las diversas formas en que se desenvuelve el lenguaje lo que permite acercarnos a su contingencia. Es decir, valiéndonos de la idea de una escenificación y transformación plural a través del lenguaje, se traduce el acontecer particular de fenómenos, personas y acciones en un entretejido capaz de reconocer las comprensiones subjetivistas para llevarnos a expresar nuestras ideas al panorama de la vida pública, de la vida en común. Frente al angustioso cuadro de hegemonía de las disciplinas y la instrumentalización de los discursos, surge una nueva posibilidad de hacer valederas las distintas voces que responden a nuevas identidades y maneras de generar reflexiones que se sobreponen ante los intentos que limitan la capacidad propia del entendimiento. Así, este libro y sus autores no quieren reservar una percepción generalizada de la vida, sino que se argumenta en contra de la coacción de percibirnos como sujetos atrapados por una perspectiva industrial de progresos, una ruptura con el pasado o la mercantilización del tiempo. Contrario a esto, se apuesta por un principio que reconoce nuestros diálogos contingentes, aquellos que devuelven el asombro propio de la investigación, al acompañarse de nuevos sentidos de comunicación e interpretación.
APA, Harvard, Vancouver, ISO, and other styles
2

Rajeev, S. G. Hamiltonian Systems Based on a Lie Algebra. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198805021.003.0010.

Full text
Abstract:
There is a remarkable analogy between Euler’s equations for a rigid body and his equations for an ideal fluid. The unifying idea is that of a Lie algebra with an inner product, which is not invariant, on it. The concepts of a vector space, Lie algebra, and inner product are reviewed. A hamiltonian dynamical system is derived from each metric Lie algebra. The Virasoro algebra (famous in string theory) is shown to lead to the KdV equation; and in a limiting case, to the Burgers equation for shocks. A hamiltonian formalism for two-dimensional Euler equations is then developed in detail. A discretization of these equations (using a spectral method) is then developed using mathematical ideas from quantum mechanics. Then a hamiltonian formalism for the full three-dimensional Euler equations is developed. The Clebsch variables which provide canonical pairs for fluid dynamics are then explained, in analogy to angular momentum.
APA, Harvard, Vancouver, ISO, and other styles
3

Scanlon, T. M. Desert. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198812692.003.0008.

Full text
Abstract:
The idea that just economic institutions should give people what they deserve can be appealed to as a way of justifying unequal rewards or as a way of limiting them. Claims about desert that could play these roles would be pure desert claims: that treating people in a certain way is justified simply by certain facts about what they are like or have done (where the qualifier “simply” excludes claims of need, and ideas of entitlement or legitimate expectations that presuppose particular institutions). Some pure desert claims are valid, such as claims about the appropriateness of moral praise, blame, and other evaluative attitudes. But economic rewards cannot be justified in this way. Claims to special reward based on moral merit, effort, ability, and marginal productivity, insofar as they are valid, are not desert claims in the relevant sense.
APA, Harvard, Vancouver, ISO, and other styles
4

Johnson, James Turner. Victory Though the Heavens Fall? Unlimited Warfare as Theme and Phenomenon. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198801825.003.0005.

Full text
Abstract:
While recent moral discourse on war focuses on limiting the conduct of war even at the expense of unclear outcomes, the idea of unlimited war has paralleled the idea of delimited war, recurring in various contexts. Historically, this has often been associated with religious war, which appeals to a divinely ordained cause so overwhelming in its claims that enemies become enemies of God and no limits can be tolerated in fighting them. But appeal to national survival can serve a similar purpose, as in the RAF and US military’s counter-population bombing tactics during World War II. The idea of unlimited warfare as necessary for victory seems destined to endure. This chapter examines this idea through selected historical cases of unlimited warfare. Doing so sharpens the definition of unlimited war and explores what circumstances, if any, might provide justification for use of unlimited methods in the effort to achieve victory.
APA, Harvard, Vancouver, ISO, and other styles
5

Zulueta-Fülscher, Kimana, and Asanga Welikala. Les constitutions infra-étatiques dans les contextes fragiles et en situation de conflit : Document d'orientation no 15. International Institute for Democracy and Electoral Assistance (International IDEA, 2021. http://dx.doi.org/10.31752/idea.2021.108.

Full text
Abstract:
Les constitutions infra-étatiques sont des instruments juridiques écrits qui limitent et structurent le pouvoir politique au niveau infra-étatique et qui possèdent une suprématie juridique par rapport aux autres normes légales infra-étatiques. Leurs objectifs premiers sont de définir le système de gouvernement de l’entité infra-étatique mais aussi, souvent, de codifier les droits des citoyens en son sein. Elles peuvent également oeuvrer à la délimitation de la communauté politique et de son identité au niveau infra-étatique. Les entités infra-étatiques se définissent, quant à elles, comme parties intégrantes d’un pays ou d’un État, avec un territoire clairement délimité. Ce document d’orientation analyse les constitutions infra-étatiques dans les contextes fragiles et en situation de conflit (que ce soit dans des États fédéraux, unitaires ou hybrides) qui ont été adoptées à l’issue de la guerre froide après 1991. L’échantillon utilisé pour cette étude comporte dix pays : l’Afrique du Sud, la Bosnie-Herzégovine, les Comores (Anjouan), l’Éthiopie, l’Indonésie (Aceh et Papouasie), la Papouasie‒Nouvelle-Guinée (PNG, Bougainville), la Russie (Tchétchénie et Daghestan), la Somalie, le Soudan et le Soudan du Sud.
APA, Harvard, Vancouver, ISO, and other styles
6

Moody-Adams, Michele. Is There a “Safe Space” for Academic Freedom? Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198791508.003.0003.

Full text
Abstract:
This chapter addresses the charge, implicit in justice-based arguments for intellectual “safe spaces” on college campuses, that protecting academic freedom undermines equality of educational opportunity for students targeted by harmful expression. The discussion clarifies this argument’s central concepts and assumptions, including the concepts of expressive harm, psychological trauma, and “triggers”; the notions of microaggression and implicit bias; and the idea (articulated in the work of Jeremy Waldron) that there is a connection between a community’s “aesthetics” and its capacity to assure its members of respectful consideration. It is argued that limiting or eliminating academic freedom would stifle the critical reflection and robust debate most likely to promote justice in the face of contemporary challenges. A university that is safe for robust debate about justice cannot provide the comforts of “home.”
APA, Harvard, Vancouver, ISO, and other styles
7

Newton, Daniel W., and Jeffery A. LePine. Organizational Citizenship Behavior and Job Engagement: “You Gotta Keep ’em Separated!”. Edited by Philip M. Podsakoff, Scott B. Mackenzie, and Nathan P. Podsakoff. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780190219000.013.18.

Full text
Abstract:
Scholars largely agree that organizational citizenship behavior (OCB) is a behavioral construct that promotes individual performance and, in the aggregate, unit and organizational functioning and effectiveness. However, there are some views of the OCB construct that blur its conceptual lines with other constructs, thus limiting the theoretical, empirical, and practical insights we can draw from our research. In this chapter, we offer a counterpoint to the idea that the OCB and engagement constructs are largely redundant and that they should be combined. We first describe the nature of the two concepts and identify similarities and core distinctions. We then position OCB and engagement in a general framework that clarifies how and under what conditions they are related more or less strongly. Finally, we offer a road map for future research based on insights gleaned from considering associations and theoretical gaps among the two constructs’ dimensions.
APA, Harvard, Vancouver, ISO, and other styles
8

André, Naomi, Karen M. Bryan, and Eric Saylor, eds. Representing Blackness on the Operatic Stage. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252036781.003.0001.

Full text
Abstract:
This book examines the ways in which the idea of blackness has worked as a complex of representational strategies in the genre of opera. Offering new readings of both canonical and lesser-known operas by black and nonblack composers alike, it explores what representations of blackness in opera had in their original contexts, and what kind of performative and cultural significance they have retained. It shows that getting a black opera singer onstage involves successfully negotiating many professional and cultural barriers, but achieving that aim can lead to new and equally limiting obstacles. This is evident in the case of minstrelsy, which entail greater challenges for black performers compared to their white counterparts. Through an analysis of the “representation of blackness in opera,” the book brings to the fore questions about race and identity that are intertwined with questions of musical presentation. Most of the essays it contains are grounded in the phenomenon of black Other—the treatment of darker-skinned people as exotic or Other.
APA, Harvard, Vancouver, ISO, and other styles
9

Hain, Richard D. W., and Satbir Singh Jassal. Models of paediatric palliative care. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198745457.003.0002.

Full text
Abstract:
The UK has a variety of resources for children with life-limiting conditions that are perhaps unrivalled in the world. This is both good and bad. It offers the potential for children and their families to have choices about the location of their care. On the other hand, a multiplicity of agencies brings with it the risk of miscommunication and internecine strife. This chapter summarizes ideal models of palliative care, defining the four categories of life-limiting conditions in childhood and the role of paediatric palliative medicine specialists.
APA, Harvard, Vancouver, ISO, and other styles
10

Hain, Richard D. W., and Satbir Singh Jassal. Psychological symptoms. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198745457.003.0013.

Full text
Abstract:
Disorders of the psyche (particularly depression and anxiety) are relatively common amongst children with life-limiting conditions. Most of the tools available for evaluating or assessing them in palliative medicine were developed for adults, as were strategies for treating them. The ideal practice is to collaborate with local child and adolescent mental health services in the management of all such children. This chapter covers management of psychological conditions, including depression, anxiety, insomnia, and terminal delirium. For each symptom, causes or general points are detailed, with recommendations on pharmacological approaches covered in detail.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Limiting idea"

1

Rodríguez-Prat, Andrea, and Cristina Monforte-Royo. "Human Flourishing Until the End: The Core Values of Palliative Care." In Human Flourishing, 133–47. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-09786-7_9.

Full text
Abstract:
AbstractHuman flourishing has been defined as a subjective and holistic sentiment related to growth, prosperity, fulfillment, and sense of life completeness. This definition may lead to think that human flourishing is unique to people living under privileged circumstances of health and well-being, whereas people with life limiting illnesses are deprived from this possibility.In this paper, we reflect on the idea of human flourishing in the context of palliative care. Although people with advanced illnesses experience in a special manner the limits of human life and vulnerability, and the final stages may inevitably imply considerable suffering, we argue that it is also possible to experience this final stage as an opportunity for personal growth, to live it in full accordance with one's beliefs and values, and to reestablish a profound connection to oneself and to others. In sum, the end of life may also be a time of human flourishing.
APA, Harvard, Vancouver, ISO, and other styles
2

El-Ali, Leena. "Divorce: Men Do Not Hold all the Cards—The Qur’an Actually Levels the Playing Field Through Mandated Process and Etiquette." In Sustainable Development Goals Series, 179–97. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83582-8_15.

Full text
Abstract:
AbstractDivorce is a huge topic of concern for God in the Qur’an. Even as He makes clear that it is His least-favourable solution to marital discord and even as He counsels a period of reflection and even recommends mediation, God makes explicit His commandment that the divorce process be kind and fair to women in contrast to the then-prevailing customs. But custom to this day has been neither kind nor fair to women: the “wedding-knot” (‘isma) has been deemed by society to be held solely by the man, limiting a woman’s ability to obtain a divorce at all, much less a fair one. This has often also impacted women’s access to their own children upon divorce, surely a most unkind situation, one that is only emboldened by the false idea that men are “guardians” of women as it makes them feel even more entitled to be the sole guardians of their children.
APA, Harvard, Vancouver, ISO, and other styles
3

Ko, Min Ko, and Nikolay A. Taranukha. "Research Methodology Based on the Idea of the Limiting Transition of Damping Properties of Structures Vibrating in the “Air” Medium Using a Laser Vibrometer." In Current Problems and Ways of Industry Development: Equipment and Technologies, 518–28. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69421-0_55.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Field, Robert. "Membrane Filtration: A Priori Predictions of the Ideal Limiting Flux." In Separations for Biotechnology 2, 132–41. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0783-6_15.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Chazan, Barry. "What Is “Indoctrination”?" In Principles and Pedagogies in Jewish Education, 35–42. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83925-3_5.

Full text
Abstract:
Abstract“Indoctrination” is a term which refers to the intent to impose ideas or beliefs upon people in areas that ultimately call for individual reflection, decision-making, and choice. It is a distasteful activity because it is aimed at limiting the individual’s ability to think and choose. Religious or moral education are not necessarily indoctrination and it is possible to create a Jewish education that is not indoctrination.
APA, Harvard, Vancouver, ISO, and other styles
6

Lie, Anders, Claes Tingvall, Maria Håkansson, and Ola Boström. "Automated Vehicles: How Do They Relate to Vision Zero." In The Vision Zero Handbook, 1057–71. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76505-7_39.

Full text
Abstract:
AbstractThe ideas to develop and introduce partially or fully automated vehicles are not recent but are not used on any larger scale at this moment. It is though likely that automating different functions, or moving vehicles driverless, will be common sooner or later. In this text, it is discussed how Vision Zero principles relate to the automation of the road transport system. Key findings are that automated vehicles will have to be better than human drivers and their safety system horizon will be key to limiting their functionality. The road transport system will have to be adapted to both failing humans and failing automated vehicles.
APA, Harvard, Vancouver, ISO, and other styles
7

Lie, Anders, Claes Tingvall, Maria Håkansson, and Ola Boström. "Automated Vehicles – How Do They Relate to Vision Zero." In The Vision Zero Handbook, 1–16. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-23176-7_39-1.

Full text
Abstract:
AbstractThe ideas to develop and introduce partially or fully automated vehicles are not recent but are not used on any larger scale at this moment. It is though likely that automating different functions, or moving vehicles driverless, will be common sooner or later. In this text, it is discussed how Vision Zero principles relate to the automation of the road transport system. Key findings are that automated vehicles will have to be better than human drivers and their safety system horizon will be key to limiting their functionality. The road transport system will have to be adapted to both failing humans and failing automated vehicles.
APA, Harvard, Vancouver, ISO, and other styles
8

Correa, Denis. "The (not so violent) staseis and metabolai in the Aristotelian Athenaion Politeia." In Studi e saggi, 25–42. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/978-88-5518-612-4.04.

Full text
Abstract:
The Athenaion Politeia chapter 41.2 lists eleven changes (metabolai) to the Athenian political system from the heroic age to the democratic restoration of Thrasybulus in 403 BCE; the city allegedly remained unchanged until as late as the writing of the text, probably around the 330s BCE. This text examines some patterns in the metabolai, involving the innovations ascribed to the first three (or four) and the main role played by Solon after the dissension (stasis) in which he acted as an arbitrator and avoided the establishment of a tyranny, which, according to the work, marked the beginning of democracy. After Solon, each subsequent metabole implicated his legacy, except those that involved tyranny. This pattern oversimplifies complex historical events, but the relationship between staseis and metabolai structures the Athenaion Politeia’s original design and constitutional historical approach. While some of these changes (the fourth, fifth, tenth, and eleventh) entailed the violent seizure of power by or against tyrants, others relate to the Solonian ideal of managing staseis without the violence of tyranny, that is, by increasing (or limiting) the power of the people over the constitution.
APA, Harvard, Vancouver, ISO, and other styles
9

Nzombe, Loice S., Rodwell Makombe, and Oliver Nyambi. "Virtual Disclosures and Self-emancipations: The Female Body and Self-identity on Online Platforms in Phuthaditjhaba." In Sustainable Development Goals Series, 127–40. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-15773-8_9.

Full text
Abstract:
AbstractOnline social sites have become popular platforms for reimagining the self and (re)constructing identities. In a consumer-orientated neoliberal global order where bodies have become products to be branded, packaged and marketed, social networks have become ideal platforms for the representation and identification of bodies. Although some studies have examined the discursive construction of identities online, few have focused on the representation of the female body on social media and none has done so in the context of semi-urban spaces with a history of systemic underdevelopment such as the former Bantustan capital, Phuthaditjhaba. Thus, there is a clear dearth of knowledge about how we can read the impact of new technologies on the ever-shifting notions and perceptions of identity construction in such places. In line with the United Nations’ Sustainable Development Goal (SDG) goal five, which envisages gender equality and the empowerment of all women and girls by 2030, this chapter investigates how women in Phuthaditjhaba have appropriated social networks to instrumentalise the female body as a site and mechanic of female emancipation. We used netnography as instrument to collect data from 30 women users of Facebook and visual/textual analysis as an analytical framework to interrogate how the participants constructed identity and represented the female body on the selected social networking sites in the context of emerging and historical dimensions and dynamics of Phuthaditjhaba. Results of the study show that social media networks provide women in remote areas with an opportunity to discursively challenge limiting cultural traditions and formulate empowering and experiential new identities.
APA, Harvard, Vancouver, ISO, and other styles
10

Wellwood, Alexis. "The limiting theory." In The Meaning of More, 157–76. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198804659.003.0008.

Full text
Abstract:
This chapter considers how the compositional theory argued for in the preceding chapters might apply to a variety of additional cases where a lexical, degree-theoretic semantics has been proposed. For example, the analysis of attitude verbs like “to want”, nouns like “idiot”, and verbs like “to cool”. The chapter suggests that, rather than diagnosing scalar structure, the kinds of data motivating lexical degree-theoretic interpretation here should be understood as diagnostic of order-theoretic properties on the relevant expression’s domain of predication. Supporting the idea of a general recipe for how such cases should be addressed, the chapter raises theoretical questions like the following: do any lexical categories natively have a degree semantics? When is a degree-theoretic treatment appropriate? Should there be morphosyntactic requirements (e.g., overt or covert “much”) for an interpretation based on degrees, or not? What alternative analyses of extant cases are available?
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Limiting idea"

1

Moglen, Glenn E. "Limiting Imperviousness to Maintain Ecological Quality: Are Threshold-Based Policies a Good Idea?" In World Environmental and Water Resources Congress 2008. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40976(316)537.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Starkey, Elizabeth M., Wendy Zeng, and Scarlett R. Miller. "Fixated on Fixation? An Exploration of the Benefits and Deficits of Design “Fixation” in Engineering Design." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-86037.

Full text
Abstract:
Design fixation is often thought of only as a limiting factor when a designer is generating ideas, but design fixation is defined only as ‘sometimes counter-productive’ indicating that there may be room for good fixation. In addition, design fixation is defined as a ‘blind adherence’, meaning that the designer does not know that they are limiting their idea set. Prior work in fixation has focused on how introducing designers to bad examples can cause a negative adherence to a limited set of ideas, while work in design by analogy has focused on how introducing a designer to the right idea can positively impact the creative output of idea generation. In addition, product dissection has been investigated as a way to inspire creative design with positive results. While researchers have investigated good examples for their positive impact on the creativity of generated ideas, little work has investigated how these good examples are having a positive impact. Therefore, this study aims to understand how exposing designers to different types of products through a product dissection activity impacts how designers are reusing parts in their ideation. In addition, this study investigates if these reuses are unconscious through the use of eye tracking equipment. The results show that reuse of parts is positively related to an individual’s creativity during idea generation. In addition, they show that there is no relationship between eye fixations and design fixation, indicating that reuse might not be unconscious. Overall, the results shed a positive light on reuse and design fixation.
APA, Harvard, Vancouver, ISO, and other styles
3

Coulter, Stewart L., Mark W. McIntosh, Bert Bras, and David W. Rosen. "Identification of Limiting Factors for Improving Design Modularity." In ASME 1998 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/detc98/dtm-5659.

Full text
Abstract:
Abstract In previous work, the idea of designing for the life cycle (DFLC) was investigated through the improvement of product architectures with an emphasis on increasing modularity. In this paper, that work is extended by developing a method for suggesting changes to the product to improve the correspondence between modules from different life-cycle viewpoints. Based on an analogy to the determination of critical paths in network analysis, the identification of limiting factors in a candidate design is intended to assist the designer in recognizing design changes that have the greatest impact on improving recyclability. The purpose of this paper is to illustrate how the identification of limiting factors can be used to improve product recyclability during configuration design. A general method for identifying and prioritizing the limiting factors is presented and applied in the context of improving recyclability. This method is shown to be capable of efficiently determining effective design changes to improve product modularity and recyclability. It is argued that the concept of limiting factors and the developed method are applicable to many different configuration design issues and not limited to recycling or even other DFLC issues. A validation of the limiting factor identification method is presented using a Genetic Algorithm and an exhaustive search.
APA, Harvard, Vancouver, ISO, and other styles
4

Diaconescu, Emanuel, Oana Miron Onciul, and Mircea Balan. "A Simple Investigation Method of Rheological Properties of Molecular Substances." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63686.

Full text
Abstract:
This paper shows that rheological properties of molecular liquids, relevant for EHD contacts, can be determined experimentally on molecular solids. A shear head is developed to measure the viscosity and limiting shear stress of solid paraffin. Preliminary results show that this idea is feasible.
APA, Harvard, Vancouver, ISO, and other styles
5

Sunnerud, Henrik, Bengt-Erik Olsson, and Peter A. Andrekson. "Technique for Characterization of Polarization Mode Dispersion Accumulation Along Optical Fibres." In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cfg4.

Full text
Abstract:
When chromatic dispersion in optical fibres no longer limits the data rate of transmission systems, polarization mode dispersion (PMD) may become the major limiting factor. Various techniques exists for measuring the PMD as an average in a fibre link while, to our knowledge, only one method for characterization of distributed PMD has been suggested [1], which is focused on measuring fibre birefringence in short fibres. We propose a novel non-destructive technique for measuring the accumulation of PMD along a fibre link. The idea is to create a map of fixed-analyser spectra [2] along a fibre, from which the accumulated differential group delay (DGD) and the corresponding PMD can be derived.
APA, Harvard, Vancouver, ISO, and other styles
6

Paré, C. "Higher-order quasi-solitons of an adapted dispersion profile." In Nonlinear Guided Waves and Their Applications. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/nlgw.1998.nwe.4.

Full text
Abstract:
Some years ago, Tajima [1] suggested that the solitonic balance between nonlinearity and dispersion could be maintained in a lossy fiber by a proper (exponential) tailoring of the dispersion profile. Since then, the idea has been generalized to include higher-order effects [2]. More recently, Kumar and Hasegawa [3] introduced the concept of " quasi-soliton ", a chirped soliton adapted to a novel dispersion profile. The pre-chirping of the input soliton has the advantage of limiting the emission of radiation and reducing the pulse interaction [4]. In this paper, we discuss of the existence of higher-order quasi-solitons that can propagate along the same dispersion profile with the same evolution of their parameters. Analytical expressions are presented for the pulse shapes, as well as the appropriate grating parameter required for long-haul transmission.
APA, Harvard, Vancouver, ISO, and other styles
7

Ayubu, Jesse Murima, and Draughting Jorum Ayub. "Revitalization: A Case Study of Likoni’s Urban Landscape." In 4th International Conference of Contemporary Affairs in Architecture and Urbanism – Full book proceedings of ICCAUA2020, 6-8 May 2020. Alanya Hamdullah Emin Paşa University, 2021. http://dx.doi.org/10.38027/iccaua2021167n6.

Full text
Abstract:
The idea of having an area undergo revitalization carries with it some hope that a newness of some sort would possibly emerge if at all the end goal is attained. Observations around the world have been made on the impact that comes along with revitalization thus in a bid to not only partake in developing selected areas, policy makers also work tirelessly to bring the experience of such achievements to the locals hence sustaining the sensitivity of the flagship projects. Likoni, located in the southern region of Mombasa County, is one of the vibrant towns along the endowed Kenyan coast region. Recently, it has undergone a series of urbanization protocols although much can still be done to raise her status as a proper hub of urbanization. Being another town in a ‘global south’ region, it faces numerous challenges both internally and externally hence a limiting factor to its development.
APA, Harvard, Vancouver, ISO, and other styles
8

Hosek, Martin. "Sensorless Modal Stabilization for Three-Link Robotic Arm With Elastic Wrist Drive Belt." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21531.

Full text
Abstract:
Abstract A control system for a three-link direct-drive robotic manipulator with inherent structural flexibilities is presented. The structural flexibilities introduce undesirable vibration modes which may affect operation of the robot motion controller, resulting in destabilization of the closed-loop system. This represents a major limiting factor for implementation of a conventional controller designed solely for the rigid body dynamics of the robotic manipulator. The fundamental idea in the presented approach is to use a composite controller which consists of a trajectory-tracking section designed for the rigid-body dynamics and a vibration-damping compensator added for attenuation of the dominant flexible dynamics. The vibration damping compensator operates on estimated states of the dominant flexible dynamics obtained from a reduced-order state observer. A mechanism is implemented which allows the robotic manipulator to move through or hold in positions where the dominant flexible dynamics is unobservable and uncontrollable. Results of laboratory tests document that the presented approach leads to improved stability and control performance.
APA, Harvard, Vancouver, ISO, and other styles
9

Bouchard, P. John, and Jino Mathew. "Bounding Residual Stress Intensity Factor Profiles for Fracture Assessment of Pipe Girth Welds." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45807.

Full text
Abstract:
The effect of residual stress on potential crack growth and fracture in welded structures is usually assessed through its contribution to the stress intensity factor (SIF) for the crack size and shape of interest. The idea of defining bounding residual SIF profiles for surface breaking circumferential cracks in pipe butt welds was presented at ASME PVP2013. The limiting profiles were based on through-thickness residual stress measurements for eight pipe girth welds. This paper presents new axial residual stress measurements made using the contour method for an Esshete 1250 stainless steel pipe girth weld. A wide variation in the through-wall distribution of axial residual stress around the circumference of the pipe is observed which has a significant effect on calculated values of SIF for postulated surface breaking circumferential cracks. Nonetheless, SIFs based on all of the new measurements (a total of 14 profiles) are comfortably bounded by the simple SIF prescriptions previously published.
APA, Harvard, Vancouver, ISO, and other styles
10

Rastogi, Vikas, Amalendu Mukherjee, and Anirvan Dasgupta. "Extended Lagrangian Formalism and Invariants of Motion of Dynamical Systems: A Case Study of Electromechanical System." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79113.

Full text
Abstract:
In this paper, an extended Lagrangian formalism for general class of dynamical systems with dissipative, non-potential fields is formulated with the aim to obtain invariants of motion for such systems. A new concept of umbra-time has been introduced for this extension. D’Alembert basic idea of allowing displacement, when the real time is frozen is conveniently expressed in the terms of umbra-time. This leads to a peculiar form of equations, which is termed as umbra-Lagrange’s equations. A variational or least action doctrine leading to the proposed form of equation is introduced, which is based on recursive minimization of functionals. The concept of umbra-time extends the classical manifold over which the system evolves. The extension of Noether’s theorem in this extended space has been presented. The idea of umbra time is then used to propose the concept of umbra-Hamiltonian, which is used along with the extended Noether’s theorem to get into the dynamics of the dynamical systems with symmetries. In the mathematical models of dynamical system, the equations for the system can be formulated in a systematic way from the bondgraph representation as bondgraph representation of a system may be constructed in a total abstraction from the mathematical models of the dynamical system. In present paper, bond graphs are conveniently used to arrive at umbra-Lagrangian of the system. As a case study, we present a dynamic analysis of an electro-mechanical system through the proposed extended Lagrangian Formulation. The major objective of this paper is an analysis of symmetries of an electro-mechanical system comprising of an externally and internally damped, symmetric, elastic rotor driven by a three-phase induction motor, for which the umbra-Lagrangian remains unchanged under two families of transformations. The behaviour of limiting dynamics is obtained and validated through simulation studies.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Limiting idea"

1

Krishna, Kala. Limiting Emissions and Trade: Some Basic Ideas. Cambridge, MA: National Bureau of Economic Research, July 2010. http://dx.doi.org/10.3386/w16147.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Kelly, Luke. Lessons learnt from humanitarian negotiations with the Taliban, 1996-2001. Institute of Development Studies (IDS), September 2021. http://dx.doi.org/10.19088/k4d.2021.11.

Full text
Abstract:
This rapid literature review finds that humanitarian actors responded in a variety of ways to Taliban actions limiting principled aid in the country during the period of their rule (1996-2001). The report is focused on the findings around humanitarian negotiation and the strategy of humanitarian actors in response to Taliban policies limiting women's ability to work for humanitarian organisations or access services. The findings are not intended to imply parallels with the current situation in Afghanistan. Evidence is in the form of a number of evaluations, academic articles and lessons learned papers on negotiating with the Taliban. It discusses the methods of negotiating with the Taliban (e.g. co-ordination, working with the leadership or rank-and-file), the content of negotiations and particularly the question of reaching agreement on women’s rights, as well as humanitarian actors’ negotiating capacity. There is less discussion on the negotiation of specific programmes (e.g. anti-gender-based violence programmes). Due to the different goals and principles of humanitarian actors, as well as different ideas of feasibility, conclusions on the effectiveness of negotiating tactics vary. Strategies therefore cannot be judged as 'successful' without reference to a conception of what is most important in humanitarian programming, and the constraints of the situation. The review highlights lessons on good negotiating practices. The main issue being negotiated was the clash between the Taliban's restrictions on women and humanitarian actors' aim of providing aid to all, including women, according to need. Various strategies were used to persuade the Taliban to consent to principled aid. This review considers aid agency negotiating strategy and tactics, as well as the underlying interests and constraints that may make negotiations more or less successful.
APA, Harvard, Vancouver, ISO, and other styles
3

Kelly, Luke. Lessons Learnt from Humanitarian Negotiations with the Taliban, 1996-2001. Institute of Development Studies (IDS), September 2021. http://dx.doi.org/10.19088/k4d.2021.126.

Full text
Abstract:
This rapid literature review finds that humanitarian actors responded in a variety of ways to Taliban actions limiting principled aid in the country during the period of their rule (1996-2001). The report is focused on the findings around humanitarian negotiation and the strategy of humanitarian actors in response to Taliban policies limiting women's ability to work for humanitarian organisations or access services. The findings are not intended to imply parallels with the current situation in Afghanistan. Evidence is in the form of a number of evaluations, academic articles and lessons learned papers on negotiating with the Taliban. It discusses the methods of negotiating with the Taliban (e.g. co-ordination, working with the leadership or rank-and-file), the content of negotiations and particularly the question of reaching agreement on women’s rights, as well as humanitarian actors’ negotiating capacity. There is less discussion on the negotiation of specific programmes (e.g. anti-gender-based violence programmes). Due to the different goals and principles of humanitarian actors, as well as different ideas of feasibility, conclusions on the effectiveness of negotiating tactics vary. Strategies therefore cannot be judged as 'successful' without reference to a conception of what is most important in humanitarian programming, and the constraints of the situation. The review highlights lessons on good negotiating practices. The main issue being negotiated was the clash between the Taliban's restrictions on women and humanitarian actors' aim of providing aid to all, including women, according to need. Various strategies were used to persuade the Taliban to consent to principled aid. This review considers aid agency negotiating strategy and tactics, as well as the underlying interests and constraints that may make negotiations more or less successful.
APA, Harvard, Vancouver, ISO, and other styles
4

Kelly, Luke. Lessons Learnt from Humanitarian Negotiations with the Taliban, 1996-2001. Institute of Development Studies, September 2021. http://dx.doi.org/10.19088/k4d.2021.119.

Full text
Abstract:
This rapid literature review finds that humanitarian actors responded in a variety of ways to Taliban actions limiting principled aid in the country during the period of their rule (1996-2001). The report is focused on the findings around humanitarian negotiation and the strategy of humanitarian actors in response to Taliban policies limiting women's ability to work for humanitarian organisations or access services. The findings are not intended to imply parallels with the current situation in Afghanistan. Evidence is in the form of a number of evaluations, academic articles and lessons learned papers on negotiating with the Taliban. It discusses the methods of negotiating with the Taliban (e.g. co-ordination, working with the leadership or rank-and-file), the content of negotiations and particularly the question of reaching agreement on women’s rights, as well as humanitarian actors’ negotiating capacity. There is less discussion on the negotiation of specific programmes (e.g. anti-gender-based violence programmes). Due to the different goals and principles of humanitarian actors, as well as different ideas of feasibility, conclusions on the effectiveness of negotiating tactics vary. Strategies therefore cannot be judged as 'successful' without reference to a conception of what is most important in humanitarian programming, and the constraints of the situation. The review highlights lessons on good negotiating practices. The main issue being negotiated was the clash between the Taliban's restrictions on women and humanitarian actors' aim of providing aid to all, including women, according to need. Various strategies were used to persuade the Taliban to consent to principled aid. This review considers aid agency negotiating strategy and tactics, as well as the underlying interests and constraints that may make negotiations more or less successful.
APA, Harvard, Vancouver, ISO, and other styles
5

Saltus, Christina, Todd Swannack, and S. McKay. Geospatial Suitability Indices Toolbox (GSI Toolbox). Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41881.

Full text
Abstract:
Habitat suitability models are widely adopted in ecosystem management and restoration, where these index models are used to assess environmental impacts and benefits based on the quantity and quality of a given habitat. Many spatially distributed ecological processes require application of suitability models within a geographic information system (GIS). Here, we present a geospatial toolbox for assessing habitat suitability. The Geospatial Suitability Indices (GSI) toolbox was developed in ArcGIS Pro 2.7 using the Python® 3.7 programming language and is available for use on the local desktop in the Windows 10 environment. Two main tools comprise the GSI toolbox. First, the Suitability Index Calculator tool uses thematic or continuous geospatial raster layers to calculate parameter suitability indices based on user-specified habitat relationships. Second, the Overall Suitability Index Calculator combines multiple parameter suitability indices into one overarching index using one or more options, including: arithmetic mean, weighted arithmetic mean, geometric mean, and minimum limiting factor. The resultant output is a raster layer representing habitat suitability values from 0.0 to 1.0, where zero is unsuitable habitat and one is ideal suitability. This report documents the model purpose and development as well as provides a user’s guide for the GSI toolbox.
APA, Harvard, Vancouver, ISO, and other styles
6

Saltus, Christina, S. McKay, and Todd Swannack. Geospatial suitability indices (GSI) toolbox : user's guide. Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45128.

Full text
Abstract:
Habitat suitability models have been widely adopted in ecosystem management and restoration to assess environmental impacts and benefits according to the quantity and quality of a given habitat. Many spatially distributed ecological processes require application of suitability models within a geographic information system (GIS). This technical report presents a geospatial toolbox for assessing habitat suitability. The geospatial suitability indices (GSI) toolbox was developed in ArcGIS Pro 2.7 using the Python 3.7 programming language and is available for use on the local desktop in the Windows 10 environment. Two main tools comprise the GSI toolbox. First, the suitability index (SIC) calculator tool uses thematic or continuous geospatial raster layers to calculate parameter suitability indices using user-specified habitat relationships. Second, the overall suitability index calculator (OSIC) combines multiple parameter suitability indices into one overarching index using one or more options, including arithmetic mean, weighted arithmetic mean, geometric mean, and minimum limiting factor. The result is a raster layer representing habitat suitability values from 0.0–1.0, where zero (0) is unsuitable habitat and one (1) is ideal suitability. This report documents the model purpose and development and provides a user’s guide for the GSI toolbox.
APA, Harvard, Vancouver, ISO, and other styles
7

Lahav, Ori, Albert Heber, and David Broday. Elimination of emissions of ammonia and hydrogen sulfide from confined animal and feeding operations (CAFO) using an adsorption/liquid-redox process with biological regeneration. United States Department of Agriculture, March 2008. http://dx.doi.org/10.32747/2008.7695589.bard.

Full text
Abstract:
The project was originally aimed at investigating and developing new efficient methods for cost effective removal of ammonia (NH₃) and hydrogen sulfide (H₂S) from Concentrated Animal Feeding Operations (CAFO), in particular broiler and laying houses (NH₃) and hog houses (H₂S). In both cases, the principal idea was to design and operate a dedicated air collection system that would be used for the treatment of the gases, and that would work independently from the general ventilation system. The advantages envisaged: (1) if collected at a point close to the source of generation, pollutants would arrive at the treatment system at higher concentrations; (2) the air in the vicinity of the animals would be cleaner, a fact that would promote animal growth rates; and (3) collection efficiency would be improved and adverse environmental impact reduced. For practical reasons, the project was divided in two: one effort concentrated on NH₃₍g₎ removal from chicken houses and another on H₂S₍g₎ removal from hog houses. NH₃₍g₎ removal: a novel approach was developed to reduce ammonia emissions from CAFOs in general, and poultry houses in particular. Air sucked by the dedicated air capturing system from close to the litter was shown to have NH₃₍g₎ concentrations an order of magnitude higher than at the vents of the ventilation system. The NH₃₍g₎ rich waste air was conveyed to an acidic (0<pH<~5) bubble column reactor where NH₃ was converted to NH₄⁺. The reactor operated in batch mode, starting at pH 0 and was switched to a new acidic absorption solution just before NH₃₍g₎ breakthrough occurred, at pH ~5. Experiments with a wide range of NH₃₍g₎ concentrations showed that the absorption efficiency was practically 100% throughout the process as long as the face velocity was below 4 cm/s. The potential advantages of the method include high absorption efficiency, lower NH₃₍g₎ concentrations in the vicinity of the birds, generation of a valuable product and the separation between the ventilation and ammonia treatment systems. A small scale pilot operation conducted for 5 weeks in a broiler house showed the approach to be technically feasible. H₂S₍g₎ removal: The main goal of this part was to develop a specific treatment process for minimizing H₂S₍g₎ emissions from hog houses. The proposed process consists of three units: In the 1ˢᵗ H₂S₍g₎ is absorbed into an acidic (pH<2) ferric iron solution and oxidized by Fe(III) to S⁰ in a bubble column reactor. In parallel, Fe(III) is reduced to Fe(II). In the 2ⁿᵈ unit Fe(II) is bio-oxidized back to Fe(III) by Acidithiobacillus ferrooxidans (AF).In the 3ʳᵈ unit S⁰ is separated from solution in a gravity settler. The work focused on three sub-processes: the kinetics of H₂S absorption into a ferric solution at low pH, the kinetics of Fe²⁺ oxidation by AF and the factors that affect ferric iron precipitation (a main obstacle for a continuous operation of the process) under the operational conditions. H₂S removal efficiency was found higher at a higher Fe(III) concentration and also higher for higher H₂S₍g₎ concentrations and lower flow rates of the treated air. The rate limiting step of the H₂S reactive absorption was found to be the chemical reaction rather than the transition from gas to liquid phase. H₂S₍g₎ removal efficiency of >95% was recorded with Fe(III) concentration of 9 g/L using typical AFO air compositions. The 2ⁿᵈ part of the work focused on kinetics of Fe(II) oxidation by AF. A new lab technique was developed for determining the kinetic equation and kinetic parameters (KS, Kₚ and mₘₐₓ) for the bacteria. The 3ʳᵈ part focused on iron oxide precipitation under the operational conditions. It was found that at lower pH (1.5) jarosite accumulation is slower and that the performance of the AF at this pH was sufficient for successive operation of the proposed process at the H₂S fluxes predicted from AFOs. A laboratory-scale test was carried out at Purdue University on the use of the integrated system for simultaneous hydrogen sulfide removal from a H₂S bubble column filled with ferric sulfate solution and biological regeneration of ferric ions in a packed column immobilized with enriched AFbacteria. Results demonstrated the technical feasibility of the integrated system for H₂S removal and simultaneous biological regeneration of Fe(III) for potential continuous treatment of H₂S released from CAFO. NH₃ and H₂S gradient measurements at egg layer and swine barns were conducted in winter and summer at Purdue. Results showed high potential to concentrate NH₃ and H₂S in hog buildings, and NH₃ in layer houses. H₂S emissions from layer houses were too low for a significant gradient. An NH₃ capturing system was designed and tested in a 100-chicken broiler room. Five bell-type collecting devices were installed over the litter to collect NH₃ emissions. While the air extraction system moved only 10% of the total room ventilation airflow rate, the fraction of total ammonia removed was 18%, because of the higher concentration air taken from near the litter. The system demonstrated the potential to reduce emissions from broiler facilities and to concentrate the NH₃ effluent for use in an emission control system. In summary, the project laid a solid foundation for the implementation of both processes, and also resulted in a significant scientific contribution related to AF kinetic studies and ferrous analytical measurements.
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography