scholarly journals A Simulation of the Role of Computer Networks in Increasing the Overall Efficiency of Solar Panels by Photovoltaic and Thermoelectric System Designing

Author(s):  
Y.V. Vorobiev
Synthesis ◽  
2020 ◽  
Author(s):  
Jeong Kyun Im ◽  
Ilju Jeong ◽  
Jun-Ho Choi ◽  
Won-jin Chung ◽  
ByeongDo Yang ◽  
...  

AbstractAn unprecedented N-chlorinative ring contraction of 1,2-diazines was discovered and investigated with an electrophilic chlorinating reagent, trichloroisocyanuric acid (TCICA). Through optimization and mechanistic analysis, the assisting role of n-Bu4NCl as an exogenous nucleophile was identified, and the optimized reaction conditions were applied to a range of 1,4-dimethoxyphthalazine derivatives. Also, an improvement of overall efficiency was demonstrated by the use of a labile O-silyl group. A bicyclization/ring-opening mechanism, inspired by the Favorskii rearrangement, was proposed and supported by the DFT calculations. Furthermore, the efforts on scope expansion as well as the evaluation of other electrophilic promoters revealed that the newly developed ring contraction reactivity is a unique characteristic of 1,4-dimethoxyphthalazine scaffold and TCICA.


2009 ◽  
pp. 47-72
Author(s):  
Carlo Cambini

- The liberalization process in the railway industry is highly influenced by the availability of rolling stocks. Although these assets are duplicable and cannot therefore be defined as essential facilities, evidence from many countries shows that they represent the most relevant barrier to entry in the market. In this paper, following the UK experience, we analyse the role of the rolling stocks and the hypothesis of a vertical separation of these assets from the present owner, i.e. the incumbent operator Trenitalia SpA. We therefore evaluate the pros and cons of a potential de-integration of the Italian railway industry in order to enhance market competitiveness and the overall efficiency of this industry. . Keywords: railway transport, regulation, competition, essential facilities Parole chiave: trasporto ferroviario, regolazione, concorrenza, asset essenziali . Jel Classification: L43 - L51 - L92


Author(s):  
Beth Depass ◽  
Emilie Roth ◽  
Ronald Scott ◽  
Jonathan Harter ◽  
Jeffrey Wampler

We describe a prototype cognitive work aid for airlift mission allocation and scheduling. A key design challenge was how to generate and visualize multiple operationally distinct options to broaden the set of alternative plans that Mission Planners consider, increasing overall efficiency and effectiveness of the mission planning organization. We first describe the distributed nature of the mission planning domain, where key considerations arise across different organizational boundaries, come in over time and dynamically change. We describe techniques we developed for generating and displaying multiple operationally distinct mission planning solutions, to facilitate contingency planning and collaboration across organizatinal boundaries. This work is part of a longer term program to develop and demonstrate concrete techniques for more effective joint cognitive systems.


2014 ◽  
Vol 484-485 ◽  
pp. 493-496 ◽  
Author(s):  
Xin Ju Mo

with the rapid development and wide application of networking technology, information security increasingly prominent problems are evident, more and more attention. The article introduced the current situation of network information security, explored the meaning of network information security, major threat analysis network information security, and finally gives the implementation technology of network information security and preventive measures, to ensure the information security of computer networks, so as to give full play to role of computer networks.


1987 ◽  
Vol 11 (1) ◽  
pp. 21-34 ◽  
Author(s):  
RH Weston ◽  
JD Gascoigne ◽  
CM Sumpter
Keyword(s):  

2017 ◽  
Vol 30 (7-8) ◽  
pp. 653-679 ◽  
Author(s):  
Nida Latif ◽  
Agnès Alsius ◽  
K. G. Munhall

During conversations, we engage in turn-taking behaviour that proceeds back and forth effortlessly as we communicate. In any given day, we participate in numerous face-to-face interactions that contain social cues from our partner and we interpret these cues to rapidly identify whether it is appropriate to speak. Although the benefit provided by visual cues has been well established in several areas of communication, the use of visual information to make turn-taking decisions during conversation is unclear. Here we conducted two experiments to investigate the role of visual information in identifying conversational turn exchanges. We presented clips containing single utterances spoken by single individuals engaged in a natural conversation with another. These utterances were from either right before a turn exchange (i.e., when the current talker would finish and the other would begin) or were utterances where the same talker would continue speaking. In Experiment 1, participants were presented audiovisual, auditory-only and visual-only versions of our stimuli and identified whether a turn exchange would occur or not. We demonstrated that although participants could identify turn exchanges with unimodal information alone, they performed best in the audiovisual modality. In Experiment 2, we presented participants audiovisual turn exchanges where the talker, the listener or both were visible. We showed that participants suffered a cost at identifying turns exchanges when visual cues from the listener were not available. Overall, we demonstrate that although auditory information is sufficient for successful conversation, visual information plays an important role in the overall efficiency of communication.


Author(s):  
Krzysztof Walkowiak

Anycasting in connection-oriented computer networks: Models, algorithms and resultsOur discussion in this article centers around various issues related to the use of anycasting in connection-oriented computer networks. Anycast is defined as aone-to-one-of-manytransmission to deliver a packet to one of many hosts. Anycasting can be applied if the same content is replicated over many locations in the network. Examples of network techniques that apply anycasting are Content Delivery Networks (CDNs), Domain Name Service (DNS), Peer-to-Peer (P2P) systems. The role of anycasting is growing concurrently with the popularity of electronic music, movies, and other content required by Internet users. In this work we focus on the optimization of anycast flows in connection-oriented networks. We formulate a model of anycast connections and next propose a heuristic algorithm based on the Lagrangean relaxation aimed to optimize jointly routes for anycast and unicast connections. Results of numerical experiments are presented and evaluated. Finally, we analyze briefly problems related to anycasting in dynamic routing and multi-layer networks.


Author(s):  
Valentin Valentinovich Balanovskii

This article analyzes the peculiarities of functionality of transcendental reflection among judges in the context of realization of the power of judgment. An attempt is made to answer the questions on how the judges exercise their power of judgment in decision-making, problems they are facing and ways for their solution. Attention is focused on the peculiarities of ensuring unity of self-consciousness of the judge in carrying out professional activity, as well as on the flaws of the determining and reflective power of judgment, which serve as the grounds for vacation of decisions of the courts of primary jurisdiction through appellation. The author also reviews the prospects for the implementation of artificial intelligence systems into judicial proceedings in light of the questions raised in the article. This work leans on the results of research conducted in 2019–2020 at the intersection of theoretical philosophy, philosophy and sociology of law, theory of state and law. Within the framework of this study, the question of decision-making by judges is viewed through the prism of philosophical system of I. Kant, namely through his concept of the power of judgment. The research is carried out in three directions: transcendental, formal-legal, and sociological. The results consist in formulation of practical recommendations that would improve the effectiveness of realization of the power of judgment, and thus the overall efficiency of judicial proceedings in Russia.


2020 ◽  
Vol 142 (5) ◽  
Author(s):  
X. Hu ◽  
C. Jing ◽  
P. Y. Li

Abstract A hydromechanical transmission (HMT) is a continuously variable transmission that transmits power both mechanically and hydraulically. A typical HMT consists of a pair of hydraulic pump/motors and a mechanical transmission in parallel, making it bulky and costly. The Hondamatic transmission is a compact alternative HMT design that uses an inline configuration such that the rotation of the piston barrels of the pump and motor is dual-used for mechanical transmission. This is achieved using a two-shafted pump that plays the role of a planetary gear (PG) and a distributor valve mechanism that replaces the valve plates. This paper provides the operating principle of this inline HMT (iHMT) and analyzes its performance through a combination of modeling and experimentation. Specifically, ideal and lossy average models are developed, and the performance of the Hondamatic is characterized experimentally. The lossy model, fitted with seven empirically determined parameters, is capable of predicting the mechanical and volumetric losses at different ratios and operating conditions. The dominant losses are found to be compressibility losses and no-load viscous friction losses, especially on the motor side. These losses are attributed to be the main causes for the unity transmission ratio to be less efficient than expected. The overall efficiency is between 74 and 86% at the conditions tested experimentally and is predicted to be over 70% under most operating conditions and transmission ratios. This analytical and experimental study is the first study in the open literature on this innovative compact inline HMT configuration.


2021 ◽  
Author(s):  
Zbigniew Zwoliński ◽  
Jose Brilha ◽  
Murray Gray ◽  
Jack Matthews

<p>On May 22, 2020, when International Biodiversity Day was celebrated, Murray Gray and Zbigniew Zwoliński independently wrote an email to José Brilha with a proposal to make efforts to establish the International Geodiversity Day (IGD). This was on the eve of the Oxford Geoheritage Virtual Conference (OxGVC) launch. Therefore, at the end of the conference, a declaration of establishing the IGD was prepared, which was supported by over 600 participants from over 60 countries. Virtual PICO presents further and ongoing scientific, organizational and diplomatic efforts to proclaim the IGD: starting from the Oxford Declaration, through letters of support from 108 individuals and international and national professional earth science nature conservation organizations and the International Union of Geological Sciences to Natural Sciences Sector – Division for Earth and Ecological Sciences UNESCO and Executive Board of UNESCO.</p><p>The proclamation of an International Geodiversity Day would provide an annual reminder of the essential role of geodiversity for human well-being. It provides the foundations and habitats for all living things. It is the source of materials that build our towns and cities; it provides our energy resources, including renewable energy and the materials mined to manufacture wind turbines and solar panels; it allows us to bury our waste, provides us with freshwater and attenuates our pollution; it helps us to understand and predict natural hazards, it inspires our artists and provides us with incredible landscapes from mountains to coasts. Geodiversity gives us evidence of past climate and landscape changes and their causes, and therefore helps us to understand and plan for the impacts of future environmental changes.</p>


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