scholarly journals Refined cut selection for benders decomposition: applied to network capacity expansion problems

2021 ◽  
Author(s):  
René Brandenberg ◽  
Paul Stursberg
Keyword(s):  
Benders Decomposition ◽  
Capacity Expansion ◽  
Network Capacity ◽  
Selection Procedures ◽  
Computational Evaluation ◽  
Special Cases ◽  
Math Program ◽  
Cut Generation ◽  
New Perspective ◽  
The One

AbstractIn this paper, we present a new perspective on cut generation in the context of Benders decomposition. The approach, which is based on the relation between the alternative polyhedron and the reverse polar set, helps us to improve established cut selection procedures for Benders cuts, like the one suggested by Fischetti et al. (Math Program Ser B 124(1–2):175–182, 2010). Our modified version of that criterion produces cuts which are always supporting and, unless in rare special cases, facet-defining. We discuss our approach in relation to the state of the art in cut generation for Benders decomposition. In particular, we refer to Pareto-optimality and facet-defining cuts and observe that each of these criteria can be matched to a particular subset of parametrizations for our cut generation framework. As a consequence, our framework covers the method to generate facet-defining cuts proposed by Conforti and Wolsey (Math Program Ser A 178:1–20, 2018) as a special case. We conclude the paper with a computational evaluation of the proposed cut selection method. For this, we use different instances of a capacity expansion problem for the european power system.

Lorenzo at ‘The Theatre’ Meeting actors and audience

2018 ◽  
pp. 13-38
Author(s):  
N. Ceramella
Keyword(s):  
Social Structure ◽  
Social Situation ◽  
The Other ◽  
Detailed Account ◽  
The Social ◽  
New Perspective ◽  
The One

The article considers two versions of D. H. Lawrence’s essay The Theatre: the one which appeared in the English Review in September 1913 and the other one which Lawrence published in his first travel book Twilight in Italy (1916). The latter, considerably revised and expanded, contains a number of new observations and gives a more detailed account of Lawrence’s ideas.Lawrence brings to life the atmosphere inside and outside the theatre in Gargnano, presenting vividly the social structure of this small northern Italian town. He depicts the theatre as a multi-storey stage, combining the interpretation of the plays by Shakespeare, D’Annunzio and Ibsen with psychological portraits of the actors and a presentation of the spectators and their responses to the plays as distinct social groups.Lawrence’s views on the theatre are contextualised by his insights into cinema and its growing popularity.What makes this research original is the fact that it offers a new perspective, aiming to illustrate the social situation inside and outside the theatre whichLawrenceobserved. The author uses the material that has never been published or discussed before such as the handwritten lists of box-holders in Gargnano Theatre, which was offered to Lawrence and his wife Frieda by Mr. Pietro Comboni, and the photographs of the box-panels that decorated the theatre inLawrence’s time.

Compressed Development

2020 ◽  
Author(s):  
D. Hugh Whittaker ◽  
Timothy Sturgeon ◽  
Toshie Okita ◽  
Tianbiao Zhu
Keyword(s):  
Social Development ◽  
Global Economy ◽  
National Development ◽  
Value Chains ◽  
Middle Income ◽  
The United Kingdom ◽  
Development Processes ◽  
Multiple Levels ◽  
New Perspective ◽  
The One

This book highlights the importance of time and timing in economic and social development. ‘Compressed development’ consists of two key features and their interaction: the tendency for development processes to unfold more rapidly (compression) and the institution-shaping influences of major periods of change and growth, especially when countries become integrated into the global economy (era). Using an interdisciplinary conceptual framework of state–market and organization–technology co-evolution, the authors contrast the experiences of ‘early’ and ‘late’ developers such as the United Kingdom and Japan, with countries–most notably China–which have become more deeply integrated with the global economy since the 1990s. Compressed developers experience ‘thin industrialization’, layered types of employment, and ‘double burdens’ or challenges in social development. National development strategies must accommodate global value chains and powerful international actors on the one hand, and decentralization on the other. To cope, and thrive, states must remain developmental, whilst being increasingly engaged and adaptive in multiple levels of governance. Compressed Development explores the historical and contemporary features of economic and social development at the intersection of development studies and studies of globalization. By bringing a new perspective on the ‘middle-income trap’, as well as the emerging digital economy, and the state–market and geopolitical tensions that are currently upending conventional wisdoms, the book offers timely insights that will be useful, not only for students of development, but for policymakers, business, and labour organization seeking to navigate the rushing currents of contemporary capitalism.

The Image of the Hasmoneans: A New Perspective

2018 ◽  
Author(s):  
Vered Noam
Keyword(s):  
First Generation ◽  
Second Temple ◽  
The Other ◽  
Three Generations ◽  
The Creation ◽  
New Perspective ◽  
The One

In attempting to characterize Second Temple legends of the Hasmoneans, the concluding chapter identifies several distinct genres: fragments from Aramaic chronicles, priestly temple legends, Pharisaic legends, and theodicean legends explaining the fall of the Hasmonean dynasty. The chapter then examines, by generation, how Josephus on the one hand, and the rabbis on the other, reworked these embedded stories. The Josephan treatment aimed to reduce the hostility of the early traditions toward the Hasmoneans by imposing a contrasting accusatory framework that blames the Pharisees and justifies the Hasmonean ruler. The rabbinic treatment of the last three generations exemplifies the processes of rabbinization and the creation of archetypal figures. With respect to the first generation, the deliberate erasure of Judas Maccabeus’s name from the tradition of Nicanor’s defeat indicates that they chose to celebrate the Hasmonean victory but concealed its protagonists, the Maccabees, simply because no way was found to bring them into the rabbinic camp.

scholarly journals When to Substitute a Missing Upper Lateral With a Canine: A Simplified Approach

2021 ◽  
pp. 030157422098054
Author(s):  
Renu Datta
Keyword(s):  
Anterior Segment ◽  
Specific Treatment ◽  
Simplified Approach ◽  
Special Cases ◽  
Randomized Control ◽  
The One ◽  
Individual Presentation ◽  
Available Information ◽  
Missing Tooth ◽  
Made In

Introduction: The upper lateral incisor is the most commonly missing tooth in the anterior segment. It leads to esthetic and functional imbalance for the patients. The ideal solution is the one that is most conservative and which fulfills the functional and esthetic needs of the concerned individual. Canine substitution is evolving to be the treatment of choice in most of the cases, because of its various advantages. These are special cases that need more time and effort from the clinicians due to space discrepancy in the upper and lower arches, along with the presentation of individual malocclusion. Aims and Objectives: Malocclusion occurring due to missing laterals is more complex, needing more time and effort from the clinicians because of space discrepancy, esthetic compromise, and individual presentation of the malocclusion. An attempt has been made in this article to review, evaluate, and tabulate the important factors for the convenience of clinicians. Method: All articles related to canine substitution were searched in the electronic database PubMed, and the important factors influencing the decision were reviewed. After careful evaluation, the checklist was evolved. Result: The malocclusions in which canine substitution is the treatment of choice are indicated in the tabular form for the convenience of clinicians. Specific treatment-planning considerations and biomechanics that can lead to an efficient and long-lasting result are also discussed. Conclusion: The need of the hour is an evidence-based approach, along with a well-designed prospective randomized control trial to understand the importance of each factor influencing these cases. Until that time, giving the available information in a simplified way can be a quality approach to these cases.

scholarly journals Low-Density Insulation Blocks and Hardboards from Amaranth (Amaranthus cruentus) Stems, a New Perspective for Building Applications

Coatings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 349
Author(s):  
Philippe Evon ◽  
Guyonne de Langalerie ◽  
Laurent Labonne ◽  
Othmane Merah ◽  
Thierry Talou ◽  
...  
Keyword(s):  
Aerial Part ◽  
Low Density ◽  
Renewable Materials ◽  
Fractionation Process ◽  
Amaranthus Cruentus ◽  
Cosmetic Industry ◽  
New Perspective ◽  
The One ◽  
Promising Source ◽  
Amaranth Oil

Nowadays, amaranth appears as a promising source of squalene of vegetable origin. Amaranth oil is indeed one of the most concentrated vegetable oils in squalene, i.e., up to 6% (w/w). This triterpene is highly appreciated in cosmetology, especially for the formulation of moisturizing creams. It is almost exclusively extracted from the liver of sharks, causing their overfishing. Thus, providing a squalene of renewable origin is a major challenge for the cosmetic industry. The amaranth plant has thus experienced renewed interest in recent years. In addition to the seeds, a stem is also produced during cultivation. Representing up to 80% (w/w) of the plant aerial part, it is composed of a ligneous fraction, the bark, on its periphery, and a pith in its middle. In this study, a fractionation process was developed to separate bark and pith. These two fractions were then used to produce renewable materials for building applications. On the one hand, the bark was used to produce hardboards, with the deoiled seeds acting as natural binder. Such boards are a viable alternative to commercial wood-based panels. On the other hand, the pith was transformed into cohesive and machinable low-density insulation blocks revealing a low thermal conductivity value.

Bodily Dasein and Chinese Script Components

2017 ◽  
Vol 2017 (2) ◽  
Author(s):  
Kwan Tze-wan
Keyword(s):  
Human Body ◽  
The Body ◽  
Chinese Script ◽  
Chinese Characters ◽  
Body Parts ◽  
Constitutive Principle ◽  
New Perspective ◽  
Social Environmental ◽  
The One ◽  
Definition Of

AbstractIn the Shuowen, one of the earliest comprehensive character dictionaries of ancient China, when discussing where the Chinese characters derive their structural components, Xu Shen proposed the dual constitutive principle of “adopting proximally from the human body, and distally from things around.” This dual emphasis of “body” and “things around” corresponds largely to the phenomenological issues of body or corporeality on the one hand, and lifeworld on the other. If we borrow Heidegger’s definition of Dasein as Being-in-the world, we can easily arrive at a reformulation of Xu Shen’s constitutive principle of the Chinese script as one that concerns “bodily Dasein.” By looking into various examples of script tokens we can further elaborate on how the Chinese make use not only of the body in general but various body parts, and how they differentiate their life world into material nature, living things, and a multifaceted world of equipment in forming a core basis of Chinese characters/components, upon which further symbolic manipulation such as “indication”, “phonetic borrowing”, semantic combination, and “annotative derivation”, etc. can be based. Finally, examples will be cited to show how in the Chinese scripts the human body (and its parts) might interact with other’s bodies (and their parts) or with “things around” (whether nature, living creatures, or artifacts) in various ways to cover the social, environmental, ritual, technical, economical, and even intellectual aspects of human experience. Bodily Dasein, so to speak, provides us with a new perspective of understanding and appreciating the entire scope of the Chinese script.

Making Nietzsche’s Thought Groan: The History of Racisms and Foucault’s Genealogy of Nietzschean Genealogy in “Society Must be Defended”

2017 ◽  
Vol 47 (2) ◽  
pp. 153-174
Author(s):  
Robert Bernasconi
Keyword(s):  
History Of ◽  
New Perspective ◽  
The One

In 1976, in “Society Must be Defended,” Foucault did more than offer an alternative genealogy of his own genealogical perspective to the one he is sometimes taken to have provided in “Nietzsche, Genealogy, History.” He also, by implication, located Nietzsche within that genealogy, one result of which is that he gave what amounts to a new perspective on how Nietzsche might be placed within the history of racisms.

“If I have to clean, I clean my own shop”: Migrant entrepreneurship as a form of emplacement in times of crisis: The example of Italy

Ethnicities ◽  
2018 ◽  
Vol 19 (2) ◽  
pp. 414-432 ◽  
Author(s):  
Claudia Lintner
Keyword(s):  
Social Interactions ◽  
Work Performance ◽  
Economic Recession ◽  
Research Approach ◽  
Structured Interviews ◽  
Opportunity Structures ◽  
Immigration Laws ◽  
Migrant Entrepreneurship ◽  
New Perspective ◽  
The One

This article analyses the relation between European economic crisis and immigration. It does so by analysing the establishment of migrants’ entrepreneurship activities in Italy, and by looking at how these activities unravel subjects’ agency in confronting constraining socioeconomic conditions and restrictive immigration laws. In this perspective, entrepreneurship should be understood as a possibility for transforming a person’s own incorporated cultural capital into a resource and, consequently, into an opportunity for self-created work performance. Interpreting entrepreneurship as a personal response of migrants to the economic recession offers a new perspective in the existing literature on migrant entrepreneurship. Crisis, in this paper, is not seen as an abstract and supernatural phenomenon leading and controlling the capacity of individuals to act, but is understood as a constructed set of meanings comprising social interactions and relationships and consolidated within public discourses. This study is based on a qualitative-explorative research approach and was carried out in South Tyrol, Italy. For the data collection, different qualitative methods were used: narrative interviews, informal discussions and semi-structured interviews. Data analysis was based on the coding processes described within the Grounded Theory. As the results show, crisis as such represents, on the one hand, a critical moment of transition or transformation of normality and the constituted ways of acting and thinking and, on the other hand, it is perceived as a new opportunity to change individual behaviour and to initiate innovative counter-strategies that will maintain a person’s capacity to act even in critical personal and structural situations. Nevertheless, showing resilience, which is powerful and leads to change, depends not only on personal motivational forces but also to given opportunity structures.

scholarly journals Does Obesity Shorten Life? Or is it the Soda? On Non-manipulable Causes

2018 ◽  
Vol 6 (2) ◽  
Author(s):  
Judea Pearl
Keyword(s):  
Causal Models ◽  
The Other ◽  
Health Cost ◽  
Other Hand ◽  
Public Debates ◽  
New Perspective ◽  
The One

AbstractNon-manipulable factors, such as gender or race have posed conceptual and practical challenges to causal analysts. On the one hand these factors do have consequences, and on the other hand, they do not fit into the experimentalist conception of causation. This paper addresses this challenge in the context of public debates over the health cost of obesity, and offers a new perspective, based on the theory of Structural Causal Models (SCM).

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