bluuebunny/crossref_metadata_2025 huggingface dataset:
VARIABLE STARS IN THE FIELD OF THE HYDRA II ULTRA-FAINT DWARF GALAXY
Authors: Vivas A. Katherina , Olsen Knut , Blum Robert , Nidever David L. , Walker Alistair R. , Martin Nicolas F. , Besla Gurtina , Gallart Carme , Marel Roeland P. van der , Majewski Steven R. , Kaleida Catherine C. , Muñoz Ricardo R. , Saha Abhijit , Conn Blair C. , Jin Shoko
Published: April 2016

We report the discovery of one RR Lyrae star in the ultra-faint satellite galaxy Hydra II based on time series photometry in the g, r and i bands obtained with the Dark Energy Camera at Cerro Tololo Inter-American Observatory, Chile. The association of the RR Lyrae star discovered here with Hydra II is clear because is located at

42
″

from the center of the dwarf, well within its half-light radius of

102
″

. The RR Lyrae star has a mean magnitude of

i
=
21.30
±
0.04

which is too faint to be a field halo star. This magnitude translates to a heliocentric distance of 151 ± 8 kpc for Hydra II; this value is

∼
13
%

larger than the estimate from the discovery paper based on the average magnitude of several blue horizontal branch star candidates. The new distance implies a slightly larger half-light radius of

76

−
10

+
12

pc and a brighter absolute magnitude of

M

V

=
−
5.1
±
0.3

, which keeps this object within the realm of the dwarf galaxies. A comparison with other RR Lyrae stars in ultra-faint systems indicates similar pulsational properties among them, which are different to those found among halo field stars and those in the largest of the Milky Way satellites. We also report the discovery of 31 additional short period variables in the field of view (RR Lyrae, SX Phe, eclipsing binaries, and a likely anomalous cepheid) which are likely not related with Hydra II.
HEATING AND ACCELERATION OF THE FAST SOLAR WIND BY ALFVÉN WAVE TURBULENCE
Authors: van Ballegooijen A. A. , Asgari-Targhi M.
Published: April 2016

We present numerical simulations of reduced magnetohydrodynamic (RMHD) turbulence in a magnetic flux tube at the center of a polar coronal hole. The model for the background atmosphere is a solution of the momentum equation and includes the effects of wave pressure on the solar wind outflow. Alfvén waves are launched at the coronal base and reflect at various heights owing to variations in Alfvén speed and outflow velocity. The turbulence is driven by nonlinear interactions between the counterpropagating Alfvén waves. Results are presented for two models of the background atmosphere. In the first model the plasma density and Alfvén speed vary smoothly with height, resulting in minimal wave reflections and low-energy dissipation rates. We find that the dissipation rate is insufficient to maintain the temperature of the background atmosphere. The standard phenomenological formula for the dissipation rate significantly overestimates the rate derived from our RMHD simulations, and a revised formula is proposed. In the second model we introduce additional density variations along the flux tube with a correlation length of 0.04 R
⊙ and with relative amplitude of 10%. These density variations simulate the effects of compressive MHD waves on the Alfvén waves. We find that such variations significantly enhance the wave reflection and thereby the turbulent dissipation rates, producing enough heat to maintain the background atmosphere. We conclude that interactions between Alfvén and compressive waves may play an important role in the turbulent heating of the fast solar wind.
OBSERVATION OF THE EVOLUTION OF A CURRENT SHEET IN A SOLAR FLARE
Authors: Zhu Chunming , Liu Rui , Alexander David , McAteer R. T. James
Published: April 2016

We report multi-wavelength and multi-viewpoint observations of a solar eruptive event that involves loop–loop interactions. During a C2.0 flare, motions associated with inflowing and outflowing plasma provide evidence for ongoing magnetic reconnection. The flare loop top and a rising “concave-up” feature are connected by a current-sheet-like structure (CSLS). The physical properties (thickness, length, temperature, and density) of the CSLS are evaluated. In regions adjacent to the CSLS, the EUV emission (characteristic temperature at 1.6 MK) begins to increase more than 10 minutes prior to the onset of the flare, and steeply decreases during the decay phase. The reduction of the emission resembles that expected from coronal dimming. The dynamics of this event imply a magnetic reconnection rate in the range 0.01–0.05.
De l’apport de l’histoire dans l’enseignement de la langue
Authors: Bouard Bérengère
Published: April 2016

Par la comparaison entre les trois terminologies grammaticales officielles (1910, 1975, 1997), nous montrons comment et pourquoi les étiquettes terminologiques des compléments du verbe (COD, COI, COS, circonstanciel) peuvent être considérées comme des objets historiques, à replacer dans l’histoire longue du métalangage grammatical français. En effet, leur sélection (qui donnent lieu à de nombreux débats), puis leur transmission, sont à relier à l’histoire de la représentation de la phrase et de ses constituants dans la grammaire française, y compris jusqu’aux nouveaux programmes 2016.
L’algorithmique a ses comportements que le comportement ne connaît pas
Authors: Reigeluth Tyler
Published: April 2016

La présente contribution cherche à reconceptualiser certains enjeux fondamentaux du machine-learning en problématisant la question du « comportement » à l’aune de la théorie du cycle de l’image de Gilbert Simondon. En prenant au sérieux les positions théoriques et les ambitions techniques dans le domaine des algorithmes auto-apprenants, nous proposons de rendre compte de certaines transformations de l’algorithmique en la qualifiant de deux idéaux-types : mécanique et comportementale. Sans suggérer une quelconque opposition binaire, nous proposons plutôt de voir ces deux pôles comme des structurations successives, des phases d’existence qui transforment la nature du problème à résoudre, qui opèrent un passage de structure en structure. À la suite de Simondon, ce passage est requalifié de transductif , de façon à esquisser une image du comportement appelant une réinvention de nos cadres politiques et éthiques. Et si la question était : quel est le collectif qui advient, et que nous désirons voir advenir, quand nous nous comportons avec des algorithmes ?
L’argent du Front national et des le Pen
Authors: Turchi Marine
Published: April 2016

L’histoire du Front national a été rythmée par de nombreux feuilletons financiers, révélant la gestion personnelle et familiale de ce parti. Jean-Marie Le Pen et Marine Le Pen ont mis en place un système hypercentralisé au fn , qui leur permet de garder la main sur les finances, en plaçant leur premier cercle au poste de trésorier et en créant leurs propres micro-partis. Aujourd’hui, le fondateur et la présidente du fn sont visés par plusieurs enquêtes judiciaires, qui concernent le financement du parti mais aussi leurs patrimoines.
L’autorité de la voix dans le discours politique
Authors: Fessaguet Dominique
Published: April 2016

La voix a un statut particulier dans notre développement de sujet. À la lisière de l’intime et du collectif, elle constitue un enjeu dans le discours politique. Quelle est la nature de son autorité ? Notre propos sera d’en examiner ses usages et ses dévoiements. Au travers d’une approche de deux régimes, hitlérien et communiste chinois, nous cheminerons dans les méandres de la séduction et de la persécution menant toutes deux au totalitarisme.
L’autorité dans la cité
Authors: Christaki Angélique
Published: April 2016

L’autorité, inexistante comme mot dans la polis antique, devient le socle de la citoyenneté romaine. Mais au-delà de sa fonction dans le corps citoyen et dans les affaires politiques de la cité de Rome, l’autorité fut avant tout celle de la parole de Dieu. Ainsi, en tant que rapport non encore existant dans le monde classique et disparu dans le monde moderne dans son sens religieux et spécifiquement chrétien, ne relevant ni de la soumission, ni de la violence, ni de la persuasion, ni du charisme, ni de l’excellence, ni des lois, ni du savoir, ni de la vérité, la notion d’autorité introduit un questionnement sur le rapport à la parole et au lien social dans le monde moderne.
La religion en tant que référence et source d’autorité, de la Révolution française à la III e République
Authors: Demeure Brigitte
Published: April 2016

La Révolution française bouleverse tous les rapports sociaux, et en particulier les rapports d’autorité. Un culte civique est créé pour garantir l’unité du corps social et pour remplacer la religion catholique qui a déclaré la guerre à la Révolution. Cette tentative échoue, et l’Église, qui se voit au début du XIXe siècle confrontée à la modernité et à la révolution industrielle, a recours au culte marial pour tenter de consolider son autorité. Celle-ci est associée à celle de la mère, il s’agit à cet égard de promouvoir la soumission au dogme catholique, d’où pour l’Église l’importance de l’éducation des filles, et pour les Républicains un conflit avec l’Église, qui aboutira à la loi de séparation de 1905. Les apports théoriques de plusieurs psychanalystes contribuent à mieux comprendre les enjeux inconscients liés à la question de l’autorité dans la cité pendant cette période de notre histoire.
Of Drag and Push Democracies
Authors: Musiyiwa Mickias , Visser Marianna W.
Published: April 2016

This chapter interrogates political discourse in popular songs of Shona expression with a view to establish the nature of their evaluation of state performance in Zimbabwe in the period, 2000-2015. By analysing the themes and the language of the songs (verbal, nominal and other constructions and figurative language), we aim to demonstrate the extent to which the songs, composed and performed by pro-opposition artists, objectively assess the performance of the Zimbabwean state. We exclude songs of pro-state musicians for the reason that, their assessment of state functionality is pro-state and therefore explicitly biased. They largely function as a vehicle for state propaganda, employed for the political discursive domination of the citizenry. In doing so they ignore or even glorify state repression, political violence, electoral fraud, insecurity of citizens, lawlessness and human rights violations, as well as the general degradation of the state system. Our observation is that, anti-state songs' depiction of the Zimbabwean nation-state as a case of death-resurrection is a more or less objective evaluation of the state's functionality. In addition to that, we argue that a much more objective assessment of Zimbabwe's performance should have been ‘a collapsed-and-partially-resuscitated state.'
A Critical Political Discourse Analysis of President Goodluck Jonathan's Declaration of State of Emergency on Adamawa, Borno, and Yobe States of Nigeria
Authors: Abaya Angulu Samson
Published: April 2016

This chapter analyzes the text to other connected discourses (intertextuality) and to historical and synchronic contexts with a view to demonstrate how the President can wield power in a democratic dispensation. The paper demonstrates that Declaration of Emergency Rule is indeed a political discourse. The paper also reveals that political powers are symmetric and asymmetric whereby the president may sound authoritative in one instance; he may sound appealing on the other. The paper also concludes that declaration of state of emergency is an embodiment of ideology, power and hierarchy. Lastly, the paper reveals that political discourses are couched bearing in mind the speaker, the listeners, and the context that gave birth to it including some sociological variables.
ISIS Rhetoric for the Creation of the Ummah
Authors: Georges Amaryllis Maria
Published: April 2016

I intend to examine the linguistic strategy used by ISIS as a means through which it creates the concept of the Muslim Ummah, which seeks to emphasize the unity of an international Muslim community based off the power of Islam. I apply a Critical Discourse Analysis for the study of Baghdadi's sermon on 4 July 2014 where he declared the establishment of the Caliphate and himself as the Caliph. Baghdadi's discourse creates a new communal identity from a Muslim populace who may have felt marginalized due to their religion in their countries of residence. It is through this discourse that he structures the Ummah loyal to the Caliphate in two ways: a) by summoning Islam to create a singular global Muslim body and the establishment of a Caliphate; and b) the structuring of an indiscriminate opponent, one that conflicts with the “camp of Islam”. The method of convincing and generating consent – of institutionalizing jihad - goes beyond propaganda; it necessitates the formation of an entirely novel lexicon, a narrative that fosters support while concurrently quashing any singular qualms.
Multilayered Political Systems and the Politics of Monitoring Local Government Programmes for Engendered Service Delivery
Authors: Mpiima David Mugambe
Published: April 2016

This chapter assessed the multilayered nature of Uganda's polity. It examines how the Uganda People's Congress (UPC) led local government in Apac district relates with the National Resistance Movement (NRM) led central government in service provision from a gender perspective. The latter provides funds to the local government and is supposed to monitor service provision, the former implements. This has led to tensions and affected service provision. Both the centre and the opposition in Local Governments (LGs) in Apac district want to be the face of successful service provision. Both parties try to undercut each other's support by sometimes sabotaging, delaying or failing service provision. This means that no gender issues will be addressed since there are no services, and if they are there, they are so poor. The conflicts have created room for NGOs to step in to do the monitoring so as to help the communities access services to a good degree of success.
Revolutionary Politics and Theater of Semiotics
Authors: Nyam Esther
Published: April 2016

In recent times, statistics have shown that the northern parts of Nigeria are poorer today than they were in the 1970s. Federal government of Nigeria is seen to be lacking in providing adequate security, quality education, good health facilities, agriculture, unemployment, infrastructure, social amenities and the like. Frustrated youths find themselves engaged in deadly politics, ethno-religious conflicts, political thuggery which has grown into political unrest and insurgency to be precise. The situation seems to be beyond repairs as seen in the present trend of the political campaigns, ethno-religious conflicts which is characterized by bombings, kidnapping, genocidal attacks, loss of lives and poverty, assassinations, hired killers, political blackmail, pre- and post-election violence. The thrust of this paper is to outline the recurring challenges and possible solutions of these revolutionary violent politics using varying semiotics with a view to finding a lasting solution for Nigeria's fragile democracy to progress to higher heights.
Sensitivity Analysis with Calibration of Natural Resource Variables under Climate Change
Authors: Ghosh Nilanjan , Hazra Somnath
Published: April 2016

This chapter compares two quantitative frameworks, namely, Computable General Equilibrium (CGE) and Econometric models to study the impacts of climate change on human economy. However, as is inferred from this chapter, CGE framework is fraught with unrealistic assumptions, and fails to capture impacts of climate change and extreme events on the ecosystem services. On the other hand, econometric framework can be customised and is not based on the unrealistic assumptions like CGE. The various advantages and disadvantages of the two methods have been discussed critically in the process in this chapter in light of the avowed objective of understanding sustainability science.
Impact of Green Growth and Development Path for Skilled and Unskilled Job Creation and Economic, Social Sustainability
Authors: Goswami Anandajit , Chaudhury Saswata , Garg Tarun
Published: April 2016

This chapter captures the possible impacts of green growth strategies and interventions in terms of skilled, unskilled job creation in context of an emerging country like India. Additionally, it addresses how income generation from specific possible green growth related interventions can have a ripple effect on development indicators like literacy rates, infant mortality rates, poverty. Further it links skilled and unskilled employment generation with “Right to Livelihoods” and MGNREGA and its implications for state level fiscal subsidies. Job creation reflects economic gain for different class of households in the short and long term. This economic gain reduces the level of inter-household and intra-household inter-temporal inequality levels. In the long run, this reduction in the inequality level can create a positive impact on the social sustainability.
Enabling Policies for Advancing Sustainability of Electricity Access Programs
Authors: Bhattacharyya Subhes C. , Palit Debajit
Published: April 2016

As 1.3 billion people lack access to electricity globally, the challenge of ensuring universal electricity access in accordance with the Sustainable Energy for All initiative remains herculean. This chapter maps policy linkages, identifies the gaps in policies and recommends options for developing the enabling environment. The chapter suggests that the policy environment governing electricity access at present is weak and that improvements are required to deliver a sustainable outcome. Although grid extension remains the preferred mode of electrification in many countries, it is not the least-cost option in remote areas where decentralized off-grid solutions may be required. Successful promotion of off-grid solutions would require a clear regulatory environment, a non-discriminatory support mechanism for various stages of a project, financing options, policy co-ordination and linkage with other economic activities for rural development. The chapter concludes that capacity remains weak and non-transparent policy lobbying can distort the development of an enabling environment.
Nonlinearity of Energy Transition in India and Implications for Sustainability Science
Authors: Goswami Anandajit , Mishra Arabinda , Bandopadhyay Kaushik
Published: April 2016

Policy discourse on rural energy transition within developing countries approach the issue of energy transition through linearly structured, causality based models. This work aims to explore, question the authenticity of such an approach through exploring existence of non linearity in the rural energy transition process of India. Energy transition of rural households impact social, economic and environmental domains of sustainability. For instance, a switchover of a household from smoke generating mudstoves to clean cookstoves can reduce smoke generation, chance of respiratory diseases, impacting the economic, environment and social domains of sustainability. Transition to clean cookstoves can be non-linear and such a transition in a non-linear way impacts domains of sustainability. Hence this work tries to contextualize rural energy transition process through econometric methods, spatial theory of chaos. The work concludes with the exploration of non linear aspects of rural energy transition process within the local rural context and connects it to sustainability science.
The Reality of Mobile Payment Systems and Social Inclusion in Latin America
Authors: Martínez-Fiestas Myriam , Oviedo-Cáceres Katia , Rodriguez-Garzon Ignacio
Published: April 2016

This chapter describes the role of mobile payment systems in Latin America as a means leading ultimately to social inclusion and financial inclusion. Specifically, the first section will discuss the social disparity in Latin America and the existence of financial and social exclusion. The second section will analyze Latin America's mobile payment systems, the region's current panorama of mobile money, the general trends that characterize money and the business models used for mobile money.The third section will review mobile money as a mechanism of financial inclusion and its role in reducing poverty in Latin America. This section will also analyze the barriers to financial inclusion.The fourth section will focus on the risks of mobile payment systems such as money laundering and terrorism funding.The chapter will conclude by comparing the similarities and differences of mobile payment systems that contribute to social inclusion implemented in Brazil, Colombia, Mexico, Paraguay and Argentina.
Biometrics and Data Protection
Authors: Andrade Francisco Pacheco , Moreira Teresa Coelho
Published: April 2016

The special nature of the characteristics used in biometric systems can present privacy challenges that might not arise with traditional identification methods, such as paper documents, because these data are derived from an individual's physical or behavioural features on the basis of a specific procedure, which is partly automated and yields a (reference) template. On account of their nature, these data require special precautions and the respect of the principles related with privacy and data protection.
Organisational Conflict and Its Management
Authors: Gul Saleem , Klausner Michael
Published: April 2016

This chapter concerns itself with defining conflict and discusses the value it provides to organizations engaging in conflicts. The chapter is structured so that first we will provide a brief on the need to study conflict and negotiations in organizations. Then the discussion will move to the different drivers of organizational conflicts and will conclude with a typology of the different conflicts that exist within organizations. The third section will focus on the models (life-cycles) of conflicts that are available in conflict literature. The final section will focus on the different conflict handling techniques that are available. This section will include a discussion on the different conflict handling styles and negotiation tactics, and a brief on the process of alternate dispute resolution in conflict management.
Quality of Judgment Assessment
Authors: Neves José , Zeleznikow John , Vicente Henrique
Published: April 2016

The intersection of Artificial Intelligence and The Law stands for a multifaceted matter, and its effects set the advances on culture, organization, as well as the social matters, when the emergent information technologies are taken into consideration. From this point of view, the weight of formal and informal Conflict Resolution settings should be highlighted, and the use of defective data, information or knowledge must be emphasized. Indeed, it is hard to do it with traditional problem solving methodologies. Therefore, in this work the focus is on the development of decision support systems, in terms of its knowledge representation and reasoning procedures, under a formal framework based on Logic Programming, complemented with an approach to computing centered on Artificial Neural Networks. It is intended to evaluate the Quality-of-Judgments and the respective Degree-of-Confidence that one has on such happenings.
Cluster Origin of Solvation Features of C-Nanostructures in Organic Solvents
Authors: Torrens Francisco , Castellano Gloria
Published: April 2016

The existence of fullerenes, Single-Wall Carbon Nanocones (SWNCs), especially Nanohorns (SWNHs), Single-Wall Carbon Nanotube (SWNT) (CNT) (NT), NT-Fullerene Bud (NT-BUD), Nanographene (GR) and GR-Fullerene Bud (GR-BUD) in cluster form is discussed in organic solvents. Theories are developed based on columnlet, bundlet and droplet models describing size-distribution functions. The phenomena present a unified explanation in the columnlet model in which free energy of cluster-involved GR comes from its volume, proportional to number of molecules n in cluster. Columnlet model enables describing distribution function of GR stacks by size. From geometrical considerations, columnlet (GR/GR-BUD), bundlet (SWNT/NT-BUD) and droplet (fullerene) models predict dissimilar behaviours. Interaction-energy parameters are derived from C60. An NT-BUD behaviour or further is expected. Solubility decays with temperature result smaller for GR/GR-BUD than SWNT/NT-BUD than C60 in agreement with lesser numbers of units in clusters. Discrepancy between experimental data of the heat of solution of fullerenes, CNT/NT-BUDs and GR/GR-BUDs is ascribed to the sharp concentration dependence of the heat of solution. Diffusion coefficient drops with temperature result greater for GR/GR-BUD than SWNT/NT-BUD than C60 corresponding to lesser number of units in clusters. Aggregates (C60)13, SWNT/NT-BUD7 and GR/GR-BUD3 are representative of droplet, bundlet and columnlet models.
Simulation of the Machining Process for a Spur Gear Pump Body - A Practical Study
Authors: Ghionea Ionuţ Gabriel , Ghionea Adrian Lucian , Ćuković Saša
Published: April 2016

The paper presents theoretical and applicative aspects concerning the construction, machining technology analysis of a spur gear pump body. For the machining process it is chosen a numerically controlled milling machine tool. The part analysed represents the main component of a hydraulic pump from the current production of a Romanian company. From a technical point of view, the part is highly complex due to the shape and dimensional precision, assembly and operation conditions of the pump as a whole. The authors propose some considerations related to optimization, choice of cutting tools, cutting depths, working mode parameters, reduction of the machining and auxiliary times, etc. The CAM simulation results provide many useful, tabular data that highlight the options to choose optimal machining variants.
Research Regarding Backlash Improvement for Planetary Speed Reducers Used in the Actuation of Industrial Robots
Authors: Butunoi Paul Alin , Stan Gheorghe , Ciofu Catalina , Ungureanu Ana Lacramioara
Published: April 2016

The backlash concept includes the deflections resulting from the gearing loads and the flank plays that exist between the flanks of the sun, planet and ring gears, forming the planetary transmission. Therefore, it is important that planetary transmissions used for industrial robots should have low backlash, in order to achieve a good positioning accuracy. In this paper, a computation method for the backlash of planetary transmissions is presented, applied for a two-stage planetary transmission having a ratio of i=36. Based on the results, strategies can be formulated, allowing the minimization of the backlash for planetary transmissions, improving the positioning accuracy.
Study on Waterjet Machining of Soft Material Components
Authors: Deaconescu Tudor , Deaconescu Andrea
Published: April 2016

Modern industry increasingly deploys waterjet machining of materials, a technology based on extremely complex and at times difficult to explain phenomena. Aimed at elucidating certain aspects of the cutting mechanics of waterjet machining, the paper presents the calculation and discusses the penetration depth of the water drops into the part material and the necessary working pressures.
Experimental and Numerical Investigation on the Torsional Behaviour of Filament Winding-Manufactured Composite Tubes
Authors: Mansour Gabriel , Tzikas Kostas , Tzetzis Dimitrios , Korlos Apostolos , Sagris Dimitrios , David Kostas
Published: April 2016

The present work is focused in the examination of the torsional behaviour of composite tubes by a combined experimental and numerical approach. Glass and carbon composite tubes were manufactured by the filament winding technique. All the tubes were fabricated with glass and carbon Fiber orientation at ±45°. The effect of the torsional loading on the mechanical strength of the glass and carbon composite tubes was initially studied experimentally. Angular velocity of 5° per min was used as torsion test speed while torque-twisting angle changes were recorded. The torsional behaviour of composite tubes was also simulated using Finite Element Analysis (FEA). An elastic orthotropic composite model was used for the simulations. The normal and shear stress contours were obtained from the FE models, while the theoretical relation of the torque versus the twisting angle was calculated. Comparison of the numerical and experimentally obtained results has shown a relatively similar torsional behaviour.
The Ant Lion Optimization Algorithm for Integrated Process Planning and Scheduling
Authors: Petrović Milica , Petronijević Jelena , Mitić Marko , Vuković Najdan , Miljković Zoran , Babić Bojan
Published: April 2016

Process planning and scheduling are two of the most important manufacturing functions which are usually performed sequentially in traditional approaches. Considering the fact that these functions are usually complementary, it is necessary to integrate them so as to improve performance of a manufacturing system. This paper presents implementation of novel nature-inspired Ant Lion Optimization (ALO) algorithm for solving this combinatorial optimization problem effectively. As the ALO algorithm mimics the intelligent behavior of antlions in hunting ants, the main steps of hunting prey, its mathematical modeling, and optimization procedure for integration of process planning and scheduling is proposed. The algorithm is implemented in Matlab environment and run on the 3.10 GHz processor with 2 GBs of RAM memory. Experimental results show applicability of the proposed approach in solving integrated process planning and scheduling problem.
Study Regarding the Quality Improvement of the Higher Education System through Customized Career Counselling and Orientation Services
Authors: Doicin Cristian Vasile , Chircu Sorina , Coteț Beatrice Gabriela , Ulmeanu Mihaela Elena , Sălvan Mirela Sanda
Published: April 2016

The present paper aims to identify the representations of final year students regarding their future career, by measuring the degree of satisfaction regarding the way in which the educational process (teaching-learning-evaluation axis) took place and by analysing their beliefs regarding the place and importance of the engineering profession on the labour market, in order to customize career counselling and orientation services. All these elements are revealed afterwards in the form of academic results obtained by students and their insertion rate into the labour market after graduation, representing a relevant feedback regarding the quality of the education process. As research method we have used the survey-based research, on a lot of 100 students from the first study year from the Faculty of IMST. The data was processed using the IBM SPSS (Statistical Package for the Social Sciences) Software Suite and the result emphasizes a significant percentage of positive beliefs regarding the profession and one’s own professional route.
Research on the Influence of Internal and External Conditionings on Students’ Perception about Future Career
Authors: Doicin Cristian Vasile , Sălvan Mirela Sanda , Ulmeanu Mihaela Elena , Chircu Sorina , Coteț Beatrice Gabriela
Published: April 2016

This research aims to analyse the opinions of the students from the POLITEHNICA University of Bucharest in connection with their future career. Based on a number of hypotheses outlined in the informal meetings we analysed the attitude of these young persons about professional success using two personality tests measuring significant parameters in defining it (the impact of the others / of the external pressures on the actions and personal choices, the force of subjective values, the possibility to predict one’s own behaviour and the behaviour of the others, commitment etc.). The results of the respondents highlighted the need to develop / deepen competencies in the field of soft skills in order to adapt to the rigors of today's labour market, in which self-knowledge and interpersonal skills are at least as important as technical and practical knowledge.
Small Scale AS/RS System for Educational Purposes - Part 2 - The Driving and Control System and the Programming Software
Authors: Popescu Constantin Adrian , Nicolescu Adrian , Avram Georgia Cezara , Mantea Adrian Theodor
Published: April 2016

The paper presents the works performed by the authors in the field of AS/RS systems design and experimental small scale AS/RS physical model set-up for educational purposes. First part of the paper presents the virtual prototype of the 3D CAD model of the AS/RS system and the developing of the physical model set-up of an experimental small scale AS/RS for educational purposes. The specific hardware for control the AS/RS system and software for programming it are also included in a second part of the paper.
Verification CAE System for Plastic Injection
Authors: Satin Lukáš , Bílik Jozef
Published: April 2016

This article is focused on the field of computer simulation and it is subsequent verification in practice. The work highlights the injection process, the simulation software that is specialized in injection molding and the technology process of injection itself. The major subject of the thesis is the use of the computer aided injection molding technology by using the CAE systems. The experimental part of the thesis deals with the production of the 3D model specific plastic parts in two modifications, injection molding simulation in the system Moldex3D and digitization of moldings on the optical 3D scanner. In the thesis we also provide measuring realization on digitized models and comparison of the parts size with the computer model. In conclusion we summarize the results achieved from the comparison. The thesis is carried out in cooperation with the Simulpast s.r.o.
Prediction of Peaks of Seasonal Influenza in Military Health-Care Data
Authors: Buczak Anna L , Baugher Benjamin , Guven Erhan , Moniz Linda , Babin Steven M. , Chretien Jean-Paul
Published: April 2016

Influenza is a highly contagious disease that causes seasonal epidemics with significant morbidity and mortality. The ability to predict influenza peak several weeks in advance would allow for timely preventive public health planning and interventions to be used to mitigate these outbreaks. Because influenza may also impact the operational readiness of active duty personnel, the US military places a high priority on surveillance and preparedness for seasonal outbreaks. A method for creating models for predicting peak influenza visits per total health-care visits (ie, activity) weeks in advance has been developed using advanced data mining techniques on disparate epidemiological and environmental data. The model results are presented and compared with those of other popular data mining classifiers. By rigorously testing the model on data not used in its development, it is shown that this technique can predict the week of highest influenza activity for a specific region with overall better accuracy than other methods examined in this article.
Существование и единственности равновесия Эрроу-Дебрe с потреблением в $\bf L^0_+$
Authors: Kramkov Dmitrii Olegovich
Published: April 2016

Мы рассматриваем экономику, где потребительские наборы участников представлены конусом $\bf L^0_+$ неотрицательных измеримых функций, а предпочтения определены аддитивными функциями полезности, удовлетворяющими условиям Инады. Мы распространяем на этот случай результаты работ [2], [1] о существовании и единственности равновесия Эрроу-Дебрe. Для существования наши условия являются необходимыми и достаточными.
The impact of resolving the Rossby radius at mid-latitudes in the ocean: results from a high-resolution version of the Met Office GC2 coupled model
Authors: Hewitt Helene T. , Roberts Malcolm J. , Hyder Pat , Graham Tim , Rae Jamie , Belcher Stephen E. , Bourdalle-Badie Romain , Copsey Dan , Coward Andrew , Guiavarch Catherine , Harris Chris , Hill Richard , Hirschi Joël J.-M. , Madec Gurvan , Mizielinski Matthew S. , Neininger Erica , New Adrian L. , Rioual Jean-Christophe , Sinha Bablu , Storkey David , Shelly Ann , Thorpe Livia , Wood Richard A.
Published: April 2016

Abstract. There is mounting evidence that resolving mesoscale eddies and boundary currents in the surface ocean field can play an important role in air-sea interaction associated with vertical and lateral transports of heat and salt. Here we describe the development of the Met Office Global Coupled Model version 2 (GC2) with increased resolution relative to the standard model: the ocean resolution is increased from 1/4° to 1/12° (28 km to 9 km at the Equator), the atmosphere resolution increased from 60 km (N216) to 25 km (N512) and the coupling frequency increased from 3-hourly to hourly. The technical developments that were required to build a version of the model at higher resolution are described as well as results from a 20 year simulation. The results demonstrate the key role played by the enhanced resolution of the ocean model: reduced Sea Surface Temperature biases, improved ocean heat transports, deeper and stronger overturning circulation and a stronger Antarctic Circumpolar Current. Our results suggest that the improvements seen here require high resolution in both atmosphere and ocean components as well as high frequency coupling. These results add to the body of evidence suggesting that ocean resolution is an important consideration when developing coupled models for weather and climate applications.
Global root zone storage capacity from satellite-based evaporation
Authors: Wang-Erlandsson Lan , Bastiaanssen Wim G. M. , Gao Hongkai , Jägermeyr Jonas , Senay Gabriel B. , van Dijk Albert I. J. M. , Guerschman Juan P. , Keys Patrick W. , Gordon Line J. , Savenije Hubert H. G.
Published: April 2016

Abstract. This study presents an "Earth observation-based" method for estimating root zone storage capacity – a critical, yet uncertain parameter in hydrological and land surface modelling. By assuming that vegetation optimises its root zone storage capacity to bridge critical dry periods, we were able to use state-of-the-art satellite-based evaporation data computed with independent energy balance equations to derive gridded root zone storage capacity at global scale. This approach does not require soil or vegetation information, is model independent, and is in principle scale independent. In contrast to a traditional look-up table approach, our method captures the variability in root zone storage capacity within land cover types, including in rainforests where direct measurements of root depths otherwise are scarce. Implementing the estimated root zone storage capacity in the global hydrological model STEAM (Simple Terrestrial Evaporation to Atmosphere Model) improved evaporation simulation overall, and in particular during the least evaporating months in sub-humid to humid regions with moderate to high seasonality. Our results suggest that several forest types are able to create a large storage to buffer for severe droughts (with a very long return period), in contrast to, for example, savannahs and woody savannahs (medium length return period), as well as grasslands, shrublands, and croplands (very short return period). The presented method to estimate root zone storage capacity eliminates the need for poor resolution soil and rooting depth data that form a limitation for achieving progress in the global land surface modelling community.
Hydrologic extremes – an intercomparison of multiple gridded statistical downscaling methods
Authors: Werner Arelia T. , Cannon Alex J.
Published: April 2016

Abstract. Gridded statistical downscaling methods are the main means of preparing climate model data to drive distributed hydrological models. Past work on the validation of climate downscaling methods has focused on temperature and precipitation, with less attention paid to the ultimate outputs from hydrological models. Also, as attention shifts towards projections of extreme events, downscaling comparisons now commonly assess methods in terms of climate extremes, but hydrologic extremes are less well explored. Here, we test the ability of gridded downscaling models to replicate historical properties of climate and hydrologic extremes, as measured in terms of temporal sequencing (i.e. correlation tests) and distributional properties (i.e. tests for equality of probability distributions). Outputs from seven downscaling methods – bias correction constructed analogues (BCCA), double BCCA (DBCCA), BCCA with quantile mapping reordering (BCCAQ), bias correction spatial disaggregation (BCSD), BCSD using minimum/maximum temperature (BCSDX), the climate imprint delta method (CI), and bias corrected CI (BCCI) – are used to drive the Variable Infiltration Capacity (VIC) model over the snow-dominated Peace River basin, British Columbia. Outputs are tested using split-sample validation on 26 climate extremes indices (ClimDEX) and two hydrologic extremes indices (3-day peak flow and 7-day peak flow). To characterize observational uncertainty, four atmospheric reanalyses are used as climate model surrogates and two gridded observational data sets are used as downscaling target data. The skill of the downscaling methods generally depended on reanalysis and gridded observational data set. However, CI failed to reproduce the distribution and BCSD and BCSDX the timing of winter 7-day low-flow events, regardless of reanalysis or observational data set. Overall, DBCCA passed the greatest number of tests for the ClimDEX indices, while BCCAQ, which is designed to more accurately resolve event-scale spatial gradients, passed the greatest number of tests for hydrologic extremes. Non-stationarity in the observational/reanalysis data sets complicated the evaluation of downscaling performance. Comparing temporal homogeneity and trends in climate indices and hydrological model outputs calculated from downscaled reanalyses and gridded observations was useful for diagnosing the reliability of the various historical data sets. We recommend that such analyses be conducted before such data are used to construct future hydro-climatic change scenarios.
Projections of the Affluent Natural Energy (ANE) for the Brazilian electricity sector based on RCP 4.5 and RCP 8.5 scenarios of IPCC-AR5
Authors: da Silva Silveira Cleiton , de Assis de Souza Filho Francisco , das Chagas Vasconcelos Junior Francisco , Sávio Passos Rodrigues Martins E.
Published: April 2016

Abstract. The Affluent Natural Energy (NAE) of Brazilian hydroelectric exploitations that comprise the National Interconnected System (NIS) was obtained from the projections of global IPCC-AR5 models for RCP 4.5 and RCP 8.5 scenarios. The analysis considered the periods from 2010 to 2039, 2040 to 2069 and 2070 to 2098, under RCP4.5 and RCP8.5 scenarios, in relation to 1950–1999. Streamflows were generated for 21 basins of the National Interconnected System (NIS) by using the hydrological model Soil Moisture Account Procedure (SMAP). The model was initialized by bias-removed monthly precipitation from the Climatic Research Unit (CRU) and estimated potential evapotranspiration using Penman-Monteith method. Streamflows in the other 182 stations of the NIS were obtained using linear regression with monthly streamflow computed by SMAP as predicted variables. NAE was obtained through product between the naturalized streamflow into each station and the productivity from each hydroelectric exploitation. The models projections indicate that the Brazilian hydropower system may suffer reductions in mean annual streamflow on most basins. This decreasing also suggests a reduction in the mean annual NAE values in the NIS. However, on Southern subsystem most models projected increase of annual NAE. This information defines the bounds for potential future streamflow scenarios and it can be used for the adoption of management policies.
The Rhetoric of Violence, the Public Sphere, and the Second Amendment
Authors: Randall David
Published: April 2016

Jürgen Habermas supports his transhistorical conception of violence as a form of instrumental reason to be rejected from the ideal polity with a historical narrative that recounts the rejection of Machiavellian and Hobbesian instrumental violence by the Enlightenment philosophes. This article provides a revised narrative, which emphasizes the persistence of a rhetorical conception of violence from Machiavelli's princely violence to a line of Anglo-American republican thinkers who shifted the locus of sovereign rhetorical violence to the people's armed militia. The narrative culminates with Madison's exegesis of the Second Amendment and sketches how this Madisonian conception harmonizes with Habermasian norms and law.
Coworking, uma forma de organização de trabalho: conceitos e práticas na cidade de São Paulo
Authors: Soares Juliana Maria Moreira , Saltorato Patricia
Published: April 2016

Introdução: este estudo teve como objetivo analisar o formato de organização de trabalho denominada coworking. Trata-se de um formato segundo o qual diversas empresas, coletivos ou profissionais liberais compartilham de um mesmo espaço, buscando a partilha dos custos relativos ao local de instalação. Neste, objetivou-se explorar como este sistema vem sendo praticado e considerado como uma alternativa à organização atual de trabalho em uma metrópole brasileira. Método: utilizou-se o estudo de caso, tendo sido escolhidos para compor a análise e a exploração das práticas associadas a este conceito, três ambientes que operam segundo este sistema na cidade de São Paulo, Brasil. Foram realizadas quatro entrevistas com coworkers, e aplicados questionários junto a 24 indivíduos que trabalham em múltiplos ambientes de coworking. Resultados: analisaram-se respostas e depoimentos relativos à motivação para inserir-se em um ambiente de coworking (divisão dos gastos, localização, flexibilidade, outros), as impressões sobre as trocas de experiências, o compartilhamento de interesses comuns; e as questões críticas de gestão de tais ambientes (espaço, segurança, outros). Conclusão: foi possível inferir que esse sistema se apresenta como uma alternativa interessante para a organização do trabalho em uma cidade do porte de São Paulo, com especial destaque para a inovação e o empreendedorismo, ainda que a gestão dos espaços e dos relacionamentos requeiram maiores considerações.
As TIC como vetores para a democracia e empoderamento em processos de informação, comunicação e conhecimento
Authors: Marchiori Patricia Zeni , Appel Andre Luiz , Bettoni Eduardo Michelotti
Published: April 2016

A equipe editorial da AtoZ apresenta a entrevista, os artigos e os short papers desta edição, na qual os autores exploram plataformas, sistemas e espaços de criação, disseminação e avaliação de conhecimentos.
Soft Tissue Lymphoma Mimicking a Lipomatous Tumor on Fine Needle Aspiration: A Diagnostic Pitfall
Authors: Yousif Mustafa , Qasem Shadi A. , Beaty Michael W. , Bergman Simon
Published: April 2016

Primary soft tissue lymphoma is very rare. Herein we describe a case of a previously healthy patient with a tumor presenting clinically as a soft tissue mass and suspected to be a soft tissue sarcoma on magnetic resonance imaging (MRI). This was initially diagnosed as an atypical lipomatous tumor on fine needle aspiration (FNA) biopsy; however, surgical excision confirmed the diagnosis of diffuse large B-cell lymphoma (DLBCL). The purpose of this report is to emphasize this potential diagnostic pitfall and describe briefly the cytologic features of soft tissue lymphoma.