On the double Roman domination in graphs Abdollahzadeh Ahangar, Hossein; Chellali, Mustapha; Sheikholeslami, Seyed Mahmoud
Discrete Applied Mathematics,
12/2017, Letnik:
232
Journal Article
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A double Roman dominating function (DRDF) on a graph G=(V,E) is a function f:V(G)→{0,1,2,3} having the property that if f(v)=0, then vertex v has at least two neighbors assigned 2 under f or one ...neighbor w with f(w)=3, and if f(v)=1, then vertex v must have at least one neighbor w with f(w)≥2. The weight of a DRDF is the value f(V(G))=∑u∈V(G)f(u). The double Roman domination number γdR(G) is the minimum weight of a DRDF on G. First we show that the decision problem associated with γdR(G) is NP-complete for bipartite and chordal graphs. Then we present some sharp bounds on the double Roman domination number which partially answer an open question posed by Beeler et al. (2016) in their introductory paper on double Roman domination. Moreover, a characterization of graphs G with small γdR(G) is provided.
The one vs. the many Woloch, Alex; Woloch, Alex
2003., 20090209, 2009, 2003, c2003.
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Does a novel focus on one life or many? Alex Woloch uses this simple question to develop a powerful new theory of the realist novel, based on how narratives distribute limited attention among a ...crowded field of characters. His argument has important implications for both literary studies and narrative theory. Characterization has long been a troubled and neglected problem within literary theory. Through close readings of such novels as Pride and Prejudice, Great Expectations, and Le Pre Goriot, Woloch demonstrates that the representation of any character takes place within a shifting field of narrative attention and obscurity. Each individual--whether the central figure or a radically subordinated one--emerges as a character only through his or her distinct and contingent space within the narrative as a whole. The "character-space," as Woloch defines it, marks the dramatic interaction between an implied person and his or her delimited position within a narrative structure. The organization of, and clashes between, many character-spaces within a single narrative totality is essential to the novel’s very achievement and concerns, striking at issues central to narrative poetics, the aesthetics of realism, and the dynamics of literary representation.
Almost fifteen per cent of the world's population today experiences some form of mental or physical disability and society tries to accommodate their needs. But what was the situation in the Roman ...world? Was there a concept of disability? How were the disabled treated? How did they manage in their daily lives? What answers did medical doctors, philosophers and patristic writers give for their problems? This book, the first monograph on the subject in English, explores the medical and material contexts for disability in the ancient world, and discusses the chances of survival for those who were born with a handicap. It covers the various sorts of disability: mental problems, blindness, deafness and deaf-muteness, speech impairment and mobility impairment, and includes discussions of famous instances of disability from the ancient world, such as the madness of Emperor Caligula, the stuttering of Emperor Claudius and the blindness of Homer.
Roman law as a field of study is rapidly evolving to reflect new perspectives and approaches in research. Scholars who work on the subject are increasingly being asked to conduct research in an ...interdisciplinary manner whereby Roman law is not merely seen as a set of abstract concepts devoid of any background, but as a body of law which operated in a specific social, economic and cultural context. This "context-based" approach to the study of Roman law is an exciting new field which legal historians must address. Since the mid-1960s, a new academic movement has advocated a "law and society" approach to the study of Roman law instead of the prevailing dogmatic methodology employed in many Faculties of law.
Since the Industrial Revolution, humans have transformed the Earth's atmosphere, committing our planet to more extreme weather, rising sea levels, melting polar ice caps, and mass extinction. This ...period of observable human impact on the Earth's ecosystems has been called the Anthropocene Age. The anthropogenic climate change that has impacted the Earth has also affected our literature, but criticism of the contemporary novel has not adequately recognized the literary response to this level of environmental crisis. Ecocriticism's theories of place and planet, meanwhile, are troubled by a climate that is neither natural nor under human control.Anthropocene Fictionsis the first systematic examination of the hundreds of novels that have been written about anthropogenic climate change.
Drawing on climatology, the sociology and philosophy of science, geography, and environmental economics, Adam Trexler argues that the novel has become an essential tool to construct meaning in an age of climate change. The novel expands the reach of climate science beyond the laboratory or model, turning abstract predictions into subjectively tangible experiences of place, identity, and culture. Political and economic organizations are also being transformed by their struggle for sustainability. In turn, the novel has been forced to adapt to new boundaries between truth and fabrication, nature and economies, and individual choice and larger systems of natural phenomena.Anthropocene Fictionsargues that new modes of inhabiting climate are of the utmost critical and political importance, when unprecedented scientific consensus has failed to lead to action.
Under the Sign of Nature: Explorations in Ecocriticism
By engaging with recent developments in the study of empires, this book examines how inhabitants of Roman imperial Syria reinvented expressions and experiences of Greek, Roman and Syrian ...identification. It demonstrates how the organization of Greek communities and a peer polity network extending citizenship to ethnic Syrians generated new semiotic frameworks for the performance of Greekness and Syrianness. Within these, Syria's inhabitants reoriented and interwove idioms of diverse cultural origins, including those from the Near East, to express Greek, Roman and Syrian identifications in innovative and complex ways. While exploring a vast array of written and material sources, the book thus posits that Greekness and Syrianness were constantly shifting and transforming categories, and it critiques many assumptions that govern how scholars of antiquity often conceive of Roman imperial Greek identity, ethnicity and culture in the Roman Near East, and processes of 'hybridity' or similar concepts.
Patients and Healers in the High Roman Empire offers a fascinating holistic look at the practice of ancient Roman medicine. Ido Irsaelowich presents three richly detailed case studies—one focusing on ...the home and reproduction; another on the army; the last on medical tourism—from the point of view of those on both sides of the patient-healer divide. He explains in depth how people in the classical world became aware of their ailments, what they believed caused particular illnesses, and why they turned to certain healers—root cutters, gymnastic trainers, dream interpreters, pharmacologists, and priests—or sought medical care in specific places such as temples, bath houses, and city centers.
The book brings to life the complex behavior and social status of all the actors involved in the medical marketplace. It also sheds new light on classical theories about sickness, the measures Romans undertook to tackle disease and improve public health, and personal expectations for and evaluations of various treatments.
Ultimately, Israelowich concludes that this clamoring multitude of coexisting forms of health care actually shared a common language. Drawing on a diverse range of sources—including patient testimonies; the writings of physicians, historians, and poets; and official publications of the Roman state—Patients and Healers in the High Roman Empire is a groundbreaking history of the culture of classical medicine.
This book explores the role of Catholic peacebuilding in addressing the global mining industry. Mining is intimately linked to issues of conflict, human rights, sustainable development, governance, ...and environmental justice. As an institution of significant scope and scale with a large network of actors at all levels and substantial theoretical and ethical resources, the Catholic Church is well positioned to acknowledge the essential role of mining, while challenging unethical and harmful practices, and promoting integral peace, development, and ecology. Drawing together theology, ethics, and praxis, the volume reflects the diversity of Catholic action on mining and the importance of an integrated approach. It includes contributions by an international and interdisciplinary range of scholars and practitioners. They examine Catholic action on mining in El Salvador, Peru, Colombia, the Democratic Republic of the Congo, and the Philippines. They also address general issues of corporate social responsibility, human rights, development, ecology, and peacebuilding. The book will be of interest to scholars of theology, social ethics, and Catholic studies as well as those specializing in development, ecology, human rights, and peace studies.
Many early novels were cosmopolitan books, read from London to Leipzig and beyond, available in nearly simultaneous translations into French, English, German, and other European languages. InNovel ...Translations, Bethany Wiggins charts just one of the paths by which newness-in its avatars as fashion, novelties, and the novel-entered the European world in the decades around 1700. As readers across Europe snapped up novels, they domesticated the genre. Across borders, the novel lent readers everywhere a suggestion of sophistication, a familiarity with circumstances beyond their local ken.
Into the eighteenth century, the modern German novel was not German at all; rather, it was French, as suggested by Germans' usage of the French word Roman to describe a wide variety of genres: pastoral romances, war and travel chronicles, heroic narratives, and courtly fictions. Carried in large part on the coattails of the Huguenot diaspora, these romans, nouvelles, amours secrets, histoires galantes, and histories scandaleuses shaped German literary culture to a previously unrecognized extent. Wiggin contends that this French chapter in the German novel's history began to draw to a close only in the 1720s, more than sixty years after the word first migrated into German. Only gradually did the Roman go native; it remained laden with the baggage from its "French" origins even into the nineteenth century.
The present volume collects most of the contributions to the plenary sessions held at the 24th International Congress of Byzantine Studies, and incisively reflects the ever increasing broadening of ...the very concept of ‘Byzantine Studies’. Indeed, a particularly salient characteristic of the papers presented here is their strong focus on interdisciplinarity and their breadth of scope, both in terms of methodology and content. The cross-pollination between different fields of Byzantine Studies is also a major point of the volume. Archaeology and art history have pride of place; it is especially in archaeological papers that one can grasp the vital importance of the interaction with the so-called hard sciences and with new technologies for contemporary research. This relevance of science and technology for archaeology, however, also applies to, and have significant repercussions in, historical studies, where – for example – the study of climate change or the application of specific software to network studies are producing a major renewal of knowledge. In more traditional subject fields, like literary, political, and intellectual history, the contributions to the present volume offer some important reflections on the connection between Byzantium and other cultures and peoples through the intermediary of texts, stories, diplomacy, trade, and war.
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