Novel Cycles Deployment Study for a Silent Aircraft

2008 ◽  
Author(s):  
L. Nettis ◽  
F. De Bellis ◽  
A. Javed ◽  
G. Doulgeris ◽  
S. O. T. Ogaji ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
New Technologies ◽  
Point Of View ◽  
Theoretical Point ◽  
The Novel ◽  
Noise Emission ◽  
Environmental Laws ◽  
Consumption Reduction ◽  
Noise Shielding ◽  
The Given

Aircraft noise is nowadays considered a pollutant like exhaust gases. Moreover, future requirements for aircraft certification impose a remarkable reduction in noise emission in the next 20 years. Since current technologies are insufficient to achieve the target, new technologies have to be developed, both for engines and airframes. In this paper, three novel engine cycles have been studied from a preliminary and theoretical point of view, considering noise and fuel consumption reduction as key design drivers. The innovative cycles analysed are: Variable Fan Nozzle Area (VFNA), Constant Volume Combustor (CVC) and Inter Cooled Recuperated (ICR). A parametric analysis has been performed for each one of them in order to select the best cycle; then, the three optimums have been compared. The designed VFNA engine provides the largest reduction in jet noise (64%) in comparison to the baseline, whilst the CVC has the lowest fuel consumption. However, both use two fans per engine, with weight and drag penalties. A further noise reduction is obtained installing the engines upon the wings, and not beneath them as in conventional designs. Obtained results show that noise shielding technique is responsible for a 20 dB decrease in OASPL, leading to a noise level, perceived on the ground, lower than 60 dB. This value implies a full satisfaction of the new environmental laws. Finally, the three propulsion systems have been installed on a medium range, twin engine aircraft and its flight performance has been evaluated. Simulations establish the superiority of the novel cycles against the baseline, in terms of reduced fuel consumption for the given mission.

scholarly journals ROLE OF GENERALIZED COSMIC CHAPLYGIN GAS IN ACCELERATING UNIVERSE: A FIELD THEORETICAL PRESCRIPTION

2013 ◽  
Vol 28 (22) ◽  
pp. 1350102 ◽  
Author(s):  
PRABIR RUDRA
Keyword(s):  
Dark Energy ◽  
Chaplygin Gas ◽  
Point Of View ◽  
Accelerating Universe ◽  
Theoretical Point ◽  
Modified Chaplygin Gas ◽  
Statefinder Parameters ◽  
Generalized Cosmic Chaplygin Gas ◽  
The Given

In this paper, we investigate the role played by dark energy (DE) in the form of Generalized cosmic Chaplygin gas in an accelerating universe described by FRW cosmology. We have tried to describe the model from the theoretical point of view of a field, by introducing a scalar field ϕ and a self-interacting potential V(ϕ). The corresponding expressions for the field are obtained for the given model. Statefinder parameters have been used to characterize the dark energy model. Plots have been generated for characterizing different phases of universe diagrammatically and a comparative study is performed with the Modified Chaplygin gas model. As an outcome of the study, Generalized cosmic Chaplygin gas is identified as a much less constrained form of dark energy as compared to modified Chaplygin gas.

Digital platforms: mapping the territory of new technologies to fight food waste

2020 ◽  
Vol 122 (5) ◽  
pp. 1647-1669 ◽  
Author(s):  
Massimo Cane ◽  
Carmen Parra
Keyword(s):  
Food Waste ◽  
New Technologies ◽  
Point Of View ◽  
The Other ◽  
Theoretical Point ◽  
Content Type ◽  
Digital Platforms ◽  
Other Hand ◽  
Short Period ◽  
Responsible Consumption

PurposeThe reduction of food waste is still a pending issue that governments have still not resolved. In response to this problem mobile platforms are emerging that follow food ecology and the responsible consumption of food, and self-management of their access to allow the communication between people and their use of food. In this paper, the authors will analyze the main digital platforms that deal with solving this problem, especially those that fulfill a social commitment through the distribution and reduction of waste.Design/methodology/approachTo provide solutions, the authors will address the importance of new technologies in the fight against waste, using digital platforms to manage food and to eliminate the loss in surplus products. To do this, the authors will first analyze from a theoretical point of view the concepts of “loss”, “waste” and “surplus product”, incorporating data of their impact between Spain and Italy. Next, the authors will analyze the influence of new technologies in the detection and distribution of products destined to become food waste. To carry out this qualitative research, the authors will apply the research strategy of theory building from multiple case studies (particularly 16 different digital platforms against food waste were analyzed), which is a methodological approach that uses cases as the basis to develop theory inductively.FindingsThe authors must make the public aware of the importance of being responsible consumers. To this end, the authors must disclose the problems associated with food waste and surplus product, presenting alternatives and new consumption habits. For this, it is necessary to collaborate and build synergies with organizations of different origins (consumers, producers and activists) involved in sustainable agrifood models. In this sense, digital platforms are essential tools to fight against food waste, preventing certain products from being considered unfit for human consumption. In this study, the authors suggest that, based on the review of the literature and the analysis of apps and blogs, the authors look for solutions to surplus and food waste both from the environment of the entrepreneur and the consumer and all using the new technologies.Research limitations/implicationsThe research has raised different limitations. On the one hand, it is a subject that has not been analyzed from a doctrinal point of view, so it is not easy to find bibliographic references. On the other hand, digital platforms that act on food waste are not cataloged. This has made it difficult to search for elements of analysis to obtain results in the work. Finally, the sample can vary in a short period of time since the digital platforms are in a boom, which means that they constantly change.Practical implicationsThis work allows a theoretical approach to the concepts of “loss”, “wastage” and “surplus product”, incorporating data on its impact in Spain and Italy, comparing it with the rest of Europe while providing figures and data on their impact. On the other hand, it allows us to know how new technologies can help the detection and distribution of products destined to become food waste. Finally, there are examples of platforms that are offering service in different areas, incorporating a novel classification that allows us to know the differences depending on their origin and destination.Originality/valueThe originality of the work can be summarized in the following points: There are no doctrinal works that analyze in a combined way the food waste with the new technologies; The relationship with the 2030 Agenda in which responsible consumption is one of the achievements pursued by the United Nations, and the authors position the study’s research as an evidence of platforms that are currently working in the interest of reducing food waste. Furthermore, the authors provide an early classification of platforms based on their usability and objectives of reducing, reusing and recycling food.

scholarly journals Driving Behaviour Analysis Using Machine and Deep Learning Methods for Continuous Streams of Vehicular Data

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4704
Author(s):  
Nikolaos Peppes ◽  
Theodoros Alexakis ◽  
Evgenia Adamopoulou ◽  
Konstantinos Demestichas
Keyword(s):  
Deep Learning ◽  
Fuel Consumption ◽  
Information And Communication Technologies ◽  
Learning Algorithms ◽  
Communication Technologies ◽  
Point Of View ◽  
Driving Behaviour ◽  
Information And Communication ◽  
Reduction Of Co2 ◽  
The Given

In the last few decades, vehicles are equipped with a plethora of sensors which can provide useful measurements and diagnostics for both the vehicle’s condition as well as the driver’s behaviour. Furthermore, the rapid increase for transportation needs of people and goods together with the evolution of Information and Communication Technologies (ICT) push the transportation domain towards a new more intelligent and efficient era. The reduction of CO2 emissions and the minimization of the environmental footprint is, undeniably, of utmost importance for the protection of the environment. In this light, it is widely acceptable that the driving behaviour is directly associated with the vehicle’s fuel consumption and gas emissions. Thus, given the fact that, nowadays, vehicles are equipped with sensors that can collect a variety of data, such as speed, acceleration, fuel consumption, direction, etc. is more feasible than ever to put forward solutions which aim not only to monitor but also improve the drivers’ behaviour from an environmental point of view. The approach presented in this paper describes a holistic integrated platform which combines well-known machine and deep learning algorithms together with open-source-based tools in order to gather, store, process, analyze and correlate different data flows originating from vehicles. Particularly, data streamed from different vehicles are processed and analyzed with the utilization of clustering techniques in order to classify the driver’s behaviour as eco-friendly or not, followed by a comparative analysis of supervised machine and deep learning algorithms in the given labelled dataset.

Design Aspects and Context Awareness in Pervasive Games

2014 ◽  
pp. 131-156 ◽  
Author(s):  
Vlasios Kasapakis ◽  
Damianos Gavalas
Keyword(s):  
New Technologies ◽  
Physical Reality ◽  
Point Of View ◽  
Theoretical Point ◽  
Pervasive Games ◽  
Personal Awareness ◽  
Current Trends ◽  
Pervasive Game ◽  
New Type ◽  
Research And Design

Pervasive games are a new type of digital games that combines game and physical reality within the gameplay. This novel game type raises unprecedented research and design challenges for developers and urges the exploration of new technologies and methods to create high quality game experiences and design novel and compelling forms of content for the players. This chapter follows a systematic approach to explore the landscape of pervasive gaming. First, the authors approach pervasive games from a theoretical point of view, defining the four axes of pervasive games design, introducing the concept of game world persistency, and describing aspects of spatially/temporally/socially expanded games. Then, they present ten pervasive game projects, classified in five genres based on their playing environment and features. Following that, the authors present a comparative view of those projects with respect to several design aspects: communication and localization, context and personal awareness aspects, information model, player equipment, and game space visualization. Last, the authors highlight current trends, design principles, and future directions for pervasive games development.

scholarly journals The Pilgrimage as Inner and Outer Journey in Paulo Coelho’s The Pilgrimage

2015 ◽  
Vol 7 (1) ◽  
pp. 73-81
Author(s):  
Vilma-Irén Mihály
Keyword(s):  
Middle Ages ◽  
Point Of View ◽  
Human Condition ◽  
Literary Analysis ◽  
Theoretical Point ◽  
The Novel ◽  
Spiritual Journey ◽  
The Core ◽  
Introductory Part ◽  
The Relationship

Abstract The present paper aims at analyzing the significance and occurrence of pilgrimages as inner and outer journeys, focusing on their form(s) and role(s] in today’s postmodern society. The introductory part presents the phenomenon from a theoretical point of view, that is taking into consideration its possible definitions (e.g. as a religious phenomenon in pre-Christian and Christian cultures from the Middle Ages to the present: and pilgrimages in literature). The core of the paper then discusses Paulo Coelho’s novel entitled The Pilgrimage. A Contemporary Quest for Ancient Wisdom, which, though extremely popular, has not yet undergone any significant literary analysis. We shall examine the protagonist’s spiritual journey from the perspective of the postmodern human condition. The questions that the paper tries to answer also refer to the relationship between the novel and different religions such as Christianity and New Age. respectively neo-pagan movements that are the product and proof of postmodern pluralism at the same time.

scholarly journals Traduire l'ironie. L'exemple d'une œuvre romanesque de N. Kazantzaki et ses traductions française et anglaise

2007 ◽  
Vol 31 (2) ◽  
Author(s):  
Maria Constantinou
Keyword(s):  
Theoretical Background ◽  
Point Of View ◽  
Theoretical Point ◽  
The Novel ◽  
English Translations ◽  
French And English ◽  
Textual Approach ◽  
Rhetorical Figure ◽  
Last Temptation Of Christ ◽  
Work And Life

This paper sets out to study the ironical effects related to morphological, rhetorical and macro-structural cues of the novel by N. Kazantzakis's Ο τελευταίος πειρασμός (1951), and then to examine the degree of their transposition in the French and English translations, carried out by Saunier (1959 La dernière tentation du Christ) and by Bien (1960 The Last Temptation of Christ) respectively. Initially, from a theoretical point of view some definitions of irony as a thought and rhetorical figure are reviewed, while a particular attention is drawn to the theoretical insights of literary irony, in relation to Kazantzakis's work and life. From an analytical, enunciative perspective, this article will endeavour to locate, classify and analyze some techniques of ironization brought into play by Kazantzakis, with a view to comparing them with their transposition in the translated texts. The study privileges a pragmatico-textual approach, which embraces the theoretical background of enunciative polyphony.

Between the novel’s frame and the novel of the frame

2021 ◽  
Vol 3 ◽  
pp. 11-20
Author(s):  
Adam Regiewicz
Keyword(s):  
Reference Point ◽  
Structural Theory ◽  
Point Of View ◽  
Artistic Expression ◽  
Self Awareness ◽  
Theoretical Point ◽  
The Novel ◽  
Definition Of ◽  
Form Of Expression ◽  
Shifting Attention

The definition of the novel's frame has been familiar to literary researchers since the appearance structural theory. They are defined by the compositional norm or form of expression or the boundaries in which the plot is located. In all these approaches, the frame is only a reference point for artistic expression. At the same time, since the 1970s, there has been a clear turn towards autothematicism in literature, accompanied by a postmodern type of narrative, focusing on this context. The narrative itself and the narrator's self-awareness play a kind of game with the reader. From the theoretical point of view, it is the frame on which the recipient focuses. On the example of Łukasz Orbitowski's book Cult, the article shows this mechanism of shifting attention to the frame of expression.

Timber Auctions in the Context of the Modern Auction Theory

2007 ◽  
pp. 86-94
Author(s):  
A. Manakov
Keyword(s):  
Theoretical Analysis ◽  
Auction Theory ◽  
Point Of View ◽  
Theoretical Point ◽  
English Auction ◽  
Analysis And Evaluation

The article provides theoretical analysis and evaluation of the timber auctions reforms in Russia. The author shows that the mechanism of the "combined auctions", which functioned until recently, is more appropriate from the theoretical point of view (and from the point of view of the Russian practice) as compared to the officially approved format of the English auction.

A novel cryptosystem based on abstract automata and Latin cubes

2015 ◽  
Vol 52 (2) ◽  
pp. 221-232
Author(s):  
Pál Dömösi ◽  
Géza Horváth
Keyword(s):  
Block Cipher ◽  
Finite Automata ◽  
Theoretical Background ◽  
Point Of View ◽  
Theoretical Point ◽  
Transition Matrices ◽  
Encryption And Decryption ◽  
Secret Keys ◽  
Automata Network ◽  
Fully Functioning

In this paper we introduce a novel block cipher based on the composition of abstract finite automata and Latin cubes. For information encryption and decryption the apparatus uses the same secret keys, which consist of key-automata based on composition of abstract finite automata such that the transition matrices of the component automata form Latin cubes. The aim of the paper is to show the essence of our algorithms not only for specialists working in compositions of abstract automata but also for all researchers interested in cryptosystems. Therefore, automata theoretical background of our results is not emphasized. The introduced cryptosystem is important also from a theoretical point of view, because it is the first fully functioning block cipher based on automata network.

KONSEP DIRI “ I “ DAN “ME” TOKOH HIROKO DALAM NOVEL NAMAKU HIROKO KARYA NH.DINI

2012 ◽  
Vol 5 (2) ◽  
pp. 109
Author(s):  
Besin Gaspar
Keyword(s):  
Point Of View ◽  
The Other ◽  
Self Concept ◽  
The Novel ◽  
Main Character ◽  
Fictional Character ◽  
Social Customs ◽  
The Social ◽  
The Village ◽  
The City

This research deals with the development of  self concept of Hiroko as the main character in Namaku Hiroko by Nh. Dini and tries to identify how Hiroko is portrayed in the story, how she interacts with other characters and whether she is portrayed as a character dominated by ”I” element or  ”Me”  element seen  from sociological and cultural point of view. As a qualitative research in nature, the source of data in this research is the novel Namaku Hiroko (1967) and the data ara analyzed and presented deductively. The result of this analysis shows that in the novel, Hiroko as a fictional character is  portrayed as a girl whose personality  develops and changes drastically from ”Me”  to ”I”. When she was still in the village  l iving with her parents, she was portrayed as a obedient girl who was loyal to the parents, polite and acted in accordance with the social customs. In short, her personality was dominated by ”Me”  self concept. On the other hand, when she moved to the city (Kyoto), she was portrayed as a wild girl  no longer controlled by the social customs. She was  firm and determined totake decisions of  her won  for her future without considering what other people would say about her. She did not want to be treated as object. To put it in another way, her personality is more dominated by the ”I” self concept.

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