bluuebunny/crossref_metadata_2025 huggingface dataset:
Arte, cultura e o espírito de um tempo
Authors: Porto Marta
Published: May 2016

Vivemos numa época marcada por mudanças nos contextos político, econômico, cultural e social em que, no Brasil, assistimos à retomada dos investimentos públicos na cultura. Essas mudanças, representadas especialmente pela revolução na produção e divulgação da informação, promoveram transformações também no imaginário coletivo e sinalizam um novo desafio para a implementação de políticas públicas de fomento à produção e ao acesso à cultura. Este artigo problematiza a adequação das políticas públicas a essa nova realidade. Salientamos que boas políticas públicas no âmbito da cultura precisam interseccionar dois campos da vida pública: o desenvolvimento estético e o ético, e destacamos a necessidade de proposição de políticas que incentivem experiências simbólicas capazes de reinventar o imaginário e que, em vez de reafirmarem desigualdades simbólicas, ofereçam aos sujeitos a oportunidade de se expressarem e se modificarem.
O SIGNIFICADO DA SUSTENTABILIDADE NA ECONOMIA DE COMUNHÃO SOB A ÓTICA DAS PRÁTICAS DE MERCADO
Authors: Ferreira Paulo André , PINHEIRO ALESSANDRO MARINHO , Cardozo Hugo Leonardo Guilhernandes , BARROS DENISE FRANCA
Published: May 2016

Este artigo foi o resultado de uma dissertação de mestrado em Administração aprovada no ano de 2014, cujo objetivo foi descobrir como as empresas da EdC definem o significado de sustentabilidade através de suas práticas de mercado, utilizando o modelo teórico de práticas de mercado de Kjellberg e Helgesson (2007). Para a realização deste objetivo foi elaborada uma apresentação dos conceitos de sustentabilidade, EdC, práticas de mercado e práticas sustentáveis, no intuito de delimitar e elucidar seus significados. Em seguida, foi demonstrado a metodologia utilizada, a análise dos dados e, por fim, as considerações finais. Como conclusão, foram constatas as seguintes práticas comuns às duas empresas pesquisadas, culminando no significado de uma sustentabilidade através do(a): relacionamento honesto ou fraterno com os clientes, reciclagem dos resíduos aproveitáveis e doação dos resíduos não aproveitáveis a outros atores, utilização de matéria-prima reciclada na produção, desenvolvimento de programas relacionados à saúde e segurança do trabalhador, realização de treinamento e cursos de capacitação ou formação aos funcionários, realização de normas de redução do desperdício e da poluição, e desenvolvimento de políticas de Responsabilidade Social.

 
ANÁLISE DAS PRÁTICAS SUSTENTÁVEIS NO RAMO VAREJISTA: UMA PERCEPÇÃO DOS COLABORADORES COM ÊNFASE NA EDUCAÇÃO AMBIENTAL
Authors: Dos Santos Lucas Almeida , Marzall Luciana Fighera , Gonçalves Daniel Lemes , Godoy Leoni Pentiado
Published: May 2016

A preocupação com a sustentabilidade tem levado muitas organizações a (re)pensarem suas ações e responsabilidades na minimização dos impactos ambientais. As práticas de uma gestão sustentável podem ajudar as empresas a evitar perdas e melhorar a qualidade das operações, resultando em ganhos para todos os envolvidos. O presente estudo de caráter qualitativo e quantitativo se apresenta como um estudo de caso realizado numa empresa de grande porte da região central do Rio Grande do Sul, atuante no ramo varejista e tem como objetivo analisar a percepção, por parte dos colaboradores, frente às práticas sustentáveis desenvolvidas pela organização e seus reflexos no meio ambiente. Após a realização da pesquisa, como principais resultados, evidenciou-se que a empresa opera de acordo com a Política de Gerenciamento de Resíduos Sólidos e dentro deste contexto, necessita instruir melhor seus colaboradores quanto às questões sócio-ambiental, uma vez que, conforme percebido, apesar das ações realizadas, a mesma apresenta um viés voltado, em maior parte, para o pensamento econômico.
A Natural Twin Hospital Birth: My Birth Story
Authors: Mueller Jamie Linn
Published: May 2016

In this column, the author describes the vaginal birth of her twin daughters. Despite impending complications in the last weeks of her pregnancy that might have required a cesarean, this mother was committed to doing everything possible to give birth naturally. With the support of her husband as well as the obstetrician and the nurse, she was able to give birth to her daughters vaginally.
Missing Links In Understanding The Relationship Between Leadership And Organizational Performance
Authors: Jing Fenwick Feng , Avery Gayle C.
Published: May 2016

Both researchers and practitioners have devoted considerable attention to the potential effects of leadership on organizational performance. Despite increased research into the leadership-performance relationship, major gaps still remain in our understanding. This paper reviews the published literature and identifies these gaps, highlighting implications for future research into the leadership-performance relationship.
Luxury Retail Environments And Changing Masculine Sociocultural Norms
Authors: Ourahmoune Nacima
Published: May 2016

This article explores how luxury brands communicate with male shoppers through their retail environments in the context of changing sociocultural definitions of masculinity. While Bain and Company (2012) speak of the ‘masculinization of the luxury market’, consumer research has paid little attention to men and masculinity (Otnes and Tuncay-Zayer, 2012). Most previous studies have tackled male representations in advertising and the tensions felt by male shoppers. This article extends this limited body of knowledge to retailing issues. It compares masculine archetypes with the discursive strategies used by retailers to target new male consumers. Using a semiotic square analysis the author reveals five masculine archetypes emphasized by luxury brands in their retail environments and discusses their implications. The findings show that most brands rely on traditional utilitarian representations of masculinity in stores, missing opportunities to renew their communication to take advantage of changing masculine values.
Analyzing Internal Efficiency Dynamics Of Turkish Banks: Activity Based Multi-Objective Dynamic DEA Model And Its Application
Authors: Kaya Tekiner , Cinar Yetkin
Published: May 2016

Efficiency measurement is an important analysis for institutions in order to investigate their performance comparatively. On the other hand, evaluating efficiency of institutions carrying out more than one activity using common resources is important management problems. Since both efficiency and priorities may change in time, the problem set is getting more complex.Sub-activities of total system (Decision Making Sub-Units/DMSU) of institutions may act in different ways since they have different priorities or goals. In addition, factors effecting efficiencies of these DMSUs may differ. Each DMSUs' countermeasures can vary in order to reach the efficient frontier. Therefore, total system efficiency results may not represent the DMSUs' efficiencies.In line with these inferences, the aim of this study is to analyze efficiency differences between DMUs and DMSUs in terms of their behaviors, efficiencies and countermeasures in a dynamic manner. A hybrid non-parametric dynamic efficiency evaluation model, "Multi-Activity Window Data Envelopment Analysis (MA-WDEA)", is developed first[1]. Then, internal dynamics of DMUs and DMSUs are analyzed via dynamic returns to scale(RTS) analysis and Tobit regression models. Both analysis are established on efficiency results of the MA-WDEA model.The proposed process is applied to measure the performance of Turkish banking system. The results first show that MA-WDEA is a suitable tool to measure efficiency trends of DMUs/DMSUs. There exist important differences among Turkish banks with respect to their operating and non-operating activities’ efficiencies. The results of the dynamic RTS and regression models also show that behavioral attitudes of DMUs and DMSUs are significantly different.[1] The developed hybrid model is first presented in 3rd International Conference on Governance, Management and Entrepreneurship in Crotia by Kaya and Cinar, (2015).
Is Foreign Direct Investment Effective From The Perspective Of Tax Avoidance? An Analysis Of Tax Avoidance Through The International Transfer Pricing Behaviors Of Korean Corporations
Authors: Park Sung Jin , Park Woo Jin , Sun Eun Jung , Woo Sohee
Published: May 2016

This study examines whether multinational companies carry out tax avoidance through subsidiaries. An empirical analysis was conducted of 4,585 Korean firms from 2001 to 2010 by company and year. The results are as follows. First, MNCs that have become more internationally diversified through the establishment of overseas subsidiaries generally show a higher tendency to avoid tax. Thus, the analysis results show a positive correlation between globally diversified MNCs and corporate tax avoidance. This correlation is established due to the firms' active use of tax strategies (investment tax credits, tax cuts) applicable to the various countries in which they have expanded their businesses. Second, the analysis results showed that these firms actively avoided tax with overseas transfer pricing behaviors when compared to companies without overseas subsidiaries. Thus, the adjustment of sales prices and purchase value through actual transactions increased the propensity of the parent company to avoid tax.
Impacto da adoção de BIM em Facility Management: uma classificação
Authors: Moreira Lorena Claudia de Souza , Ruschel Regina Coeli
Published: May 2016

Gestão de facilidades, também conhecida por Facility Management (FM), envolve a gestão de pessoas, processos e espaços podendo ser auxiliada por sistemas de informação específicos. A adoção da Modelagem da Informação da Construção (Building Information Modeling - BIM) na gestão de facilidades resulta em benefícios assim como em outras etapas do ciclo de vida da edificação. Desta forma, apesar de incipiente é crescente o interesse no uso do BIM na área de gestão de facilidades e gerenciamento da informação, pois possibilita incorporar dados consistentes desde as fases de concepção e execução até a fase de operação e manutenção da edificação, obtendo economia de tempo e redução de custos. A manutenção é uma das áreas da gestão de facilidades e foco do presente trabalho. O método utilizado foi o comparativo, pois permite identificar transformações, continuidades e descontinuidades de processos de FM com e sem a adoção do BIM. Para um melhor entendimento do processo, foi utilizada a Notação de Modelagem de Processos de Negócio, também conhecida como Business Process Model and Notation (BPMN). Escalas de implantação do BIM em FM foram elaboradas a partir da análise de um estudo de caso na literatura e de manuais de implantação da modelagem da informação da construção. A aplicação do escalonamento para caracterização foi demonstrada em outros estudos de caso também encontrados na literatura. Como contribuição, cenários da incorporação do BIM em FM sobre os processos, sistemas e informações são desenhados. Estes cenários podem auxiliar investidores neste segmento a caracterizar esforços futuros de implantação de BIM ou avaliar esforços realizados.
Pareceristas ad hoc 2015
Authors: Granja Ariovaldo Denis , Moreira Daniel De Carvalho , Kowaltowski Doris C.C.K. , Leonelli Gisela Cunha Viana , Medrano Leandro Silva , Ruschel Regina Coeli
Published: May 2016

Esta seção destina-se a publicar a lista dos nomes dos avaliadores dos artigos submetidos à PARC em 2015. Esta seção é publicada ao final do quarto fascículo do ano.
Introdução
Authors: Allegrette Álvaro Hashizumi
Published: May 2016

Editorial da Revista de Arqueologia Pública
O desenho infantil na construção da significação em Arqueologia Histórica: análise do sítio Tractus Jenipher
Authors: Sales Gladys Mary Santos
Published: May 2016

O presente artigo compõe a simulação do Programa de Prospecção e Salvamento do Patrimônio Arqueológico e Histórico do Ribeirão Cocaia, São Paulo, SP, desenvolvida para a disciplina Fundamentos da Prática Arqueológica, do curso de pós-graduação – Lato Sensu – em Arqueologia, História e Sociedade da Universidade de Santo Amaro – UNISA, cujo objetivo é estritamente didático, para a demonstração de que a aplicação da teoria, das técnicas e dos métodos da Arqueologia pode ser feita em locais comuns, com objetos do cotidiano.
Escavando em casa
Authors: Lucena Layla Chaves
Published: May 2016

O artigo Escavando em Casa deriva de uma pesquisa desenvolvida com o objetivo de compreender aspectos do cotidiano de um grupo doméstico2 que em algum momento utilizou, ou ainda utiliza, o sítio arqueológico denominado “Sítio Branco”. O trabalho objetiva compreender uma história que não está escrita em documentos oficiais, mas que pode ser resgatada valendo-se de outras fontes como, neste caso, a cultura material. Além de responder a algumas perguntas previamente elaboradas, o desenvolvimento da pesquisa permitirá ao leitor compreender os métodos e técnicas da arqueologia, que, se devidamente aplicados, podem levar ao entendimento de um grupo de pessoas, e até mesmo da sociedade.
Debaixo da cama
Authors: Resende Maurício Rodrigues de
Published: May 2016

O presente trabalho trata de uma simulação de escavação, feita dentro de um apartamento, mais especificamente no dormitório, onde o sítio a ser escavado é uma cama. Obviamente, não serão abordadas técnicas usadas durante uma escavação real, mas sim o pensar arqueológico. Ou seja, a priori, o trabalho reside na teoria e metodologia da Arqueologia, passando por todas as etapas, desde o planejamento do projeto até a divulgação dos resultados obtidos na pesquisa.
Cubic Hesitant Fuzzy Sets and Their Applications to Multi Criteria Decision Making
Authors: Mehmood Faisal , Mahmood Tahir , Khan Qaisar
Published: May 2016

In this paper we introduced cubic hesitant fuzzy set and defined internal (external) cubic hesitant fuzzy set, P(R)-union and P(R)-intersection of cubic hesitant fuzzy sets. Furthermore we defined P(R)-addition and P(R)-multiplication of cubic hesitant fuzzy sets. By using the defined operations of cubic hesitant fuzzy sets we proved their different results. We also defined R-weighted averaging and R-weighted geometric operators for cubic hesitant fuzzy sets and practiced it in multi-criteria decision making problem.
La vaca sobreinterpretada (acerca de la construcción de identidades colectivas)
Authors: Vilas Nogueira José
Published: May 2016

Hace alrededor de tres años, Jon Juaristi publicó El bucle melancólico, un libro de "historias de nacionalistas vascos". Hace algo menos tiempo lo he leído yo.

No me voy a referir al conjunto del libro, sino a uno de sus capítulos iniciales. Dos están consagrados a Unamuno. El segundo de ellos se titula "El bardo de Hendaya" y es, sustancialmente, el análisis de un poema de don Miguel.

Juaristi hace una "sobreinterpretación" -así lo dice él mismo- del poema. No voy a discutir la legitimidad de este procedimiento en los terrenos de la filología o de la crítica literaria. Pero sí diré que es un recurso siempre peligroso, y potencialmente catastrófico, aplicado al análisis de discursos, figuras o movimientos políticos. Y, además, la sobreinterpretación que hace Juaristi es manifiestamente inconsistente. El autor hace una generosa utilización del anagrama como recurso interpretativo, incluyendo lo que él llama "semianagrama" (por ejemplo "el caso del semianagrama hojas-hijos [H-J-S] " , en la página 117; " olas es semianagrama de hojas [O-A]", en la página 120; etc.). Dado que hay otros posibles "semianagramas" de cualquiera de estas palabras, por ejemplo herejes; por ejemplo, ocas (naturalmente, hay algunos más); dado que como la h de hojas-hijos es muda (precisamente a la opinión que Unamuno tenía sobre la utilidad de las haches mudas en vascuence hace repetida referencia Juaristi) es bastante dudoso que sea pertinente su utilización en la atribución de significatividad aun semi anagrama (¿o estamos simplemente a hacer crucigramas? Dado todo esto, uno se puede preguntar si este recurso no sobrepasa los límites de la argumentación razonable. Estas libertades interpretativas, en un autor que exhibe una gran cultura filológica y literaria, paradójicamente, disminuyen la plausibilidad de su discurso, prestándole apariencia de práctica de prestidigitador.
Upbeat Natural Gas Producers Show Value of Low Expectations
Authors: Rassenfoss Stephen
Published: May 2016

Conference Review - HIS Energy CERAWeek in Houston, Texas, April 20-24, 2015

The price declines for oil and natural gas are equally brutal, with roughly a 50% decline for both fuels. But the mood of those working in the gas sector was upbeat at the recent IHS CERAWeek conference compared with those in oil.

The difference can be credited to the differing expectations. On the oil side, USD 100/bbl crude looked like a sure thing going forward until the price slid to around USD 50/bbl. Those on the gas side experienced a move within a low price range they have been living with for years.

That range roughly runs from a high of USD 5 to a low of USD 2 per MMBtu, which is near the recent price of about USD 2.50, said Dave Pursell, managing director, head of securities at Tudor, Pickering, Holt & Co.

“For the last 5 years, gas prices have been down,” said Steven Mueller, chairman and chief executive officer (CEO) of Southwestern Energy. While he said he would like to see prices rise, “we designed our company around low gas prices.”

The group has hammered down the cost of profitably producing gas and maximized output by targeting the best reservoir rock, most of which is in the Marcellus Shale. The same can be said of the other companies working in formations that mostly produce dry gas.

“Production has not only increased, it has accelerated,” Mueller said. He described the combination of ingredients that led to the surge as a “power function.”

The fortunes of oil and gas diverged in fall 2008. Initially, both oil and gas exploration plunged after the financial crisis led to a recession. While oil recovered in late 2009, setting the stage for the booms in the Bakken, Eagle Ford, and Permian formations, gas prices stayed low.

Both oil and gas drilling reached nearly the same peak when measured by the number of drilling rigs working. The top week for gas was 1,606 working rigs in mid-September 2008, while oil reached 1,601 in September 2014, according to the Baker Hughes weekly rig count totals. Since they hit their peaks, the number of rigs drilling for gas has sunk to 225 in late April while oil has fallen to 701.
Technology Focus: Wellbore Tubulars (June 2015)
Authors: York Pat
Published: May 2016

Technology Focus

The roles of wellbore tubulars in delivering continued well integrity are diverse, critical, and congruent throughout the life of the well.

Well integrity has been defined by the NORSOK Standard document as the “application of technical, operational, and organizational solutions to reduce risk of uncontrolled release of formation fluids throughout the life cycle of a well.”

Wellbore tubulars are integral to providing these well-integrity barriers, whether they form the conduit for the primary barrier (the fluid column) within the well, such as the drillpipe, or comprise a well-barrier element such as casing or other tubulars associated with drilling, completion, production, intervention, or even abandonment.

During the well-construction phase, the primary well barrier is typically the fluid column and its tubular conduits. Secondary well-barrier elements can be the in-situ formation, casing cement, casing, wellhead, high-pressure riser, or drilling blowout preventer. Subsequently, as the well matures over the next 30 years or more, the elements within the wellbore-tubular realm vary, but each continues to play a significant role in maintaining well integrity. Therefore, with more-complex high-pressure/high-temperature wells being drilled, the industry is adopting a more “life of the well” engineered approach in the area of wellbore-tubular design.

The papers summarized within this section are focused on the various roles tubulars play during the life of the well, beginning with proactive application of innovative well monitoring during drilling operations to provide a dual role of the drillpipe by adding a layer of well-health surveillance during the drilling activities. The section’s focus continues with reviews of case histories outlining the application of drillpipe intervention systems successfully applied in the offshore west Africa arena and solutions to large-scale tubular failures within a mature field in Suriname’s Tambaredjo field.

The additional-reading titles selected further explore various applications and evaluation techniques with case-history references to assist in expanding the reader’s wellbore-tubular knowledge toolbox.

We all strive to deliver quality well construction, production, intervention, and abandonment to our industry. While evaluating papers for inclusion in these few short pages encapsulating the extensive base of information published that surrounds the application of wellbore tubulars, I was struck by the quality and diversity of information available. Therefore, the reader is encouraged to search further within the industry’s technical-paper and article archives to explore additional aspects of wellbore tubulars and the tools and techniques that are currently available and critique their applicability.
Reducing Tubing Failures in the Tambaredjo Field, Suriname
Authors: Carpenter Chris
Published: May 2016

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 169978, “Case Study for Reducing Tubing Failures in Suriname’s Tambaredjo Field,” by D. Nurmohamed, SPE, H. Chin A Lien, SPE, and S. Kisoensingh, SPE, Staatsolie Maatschappij Suriname, prepared for the 2014 SPE Trinidad and Tobago Energy Resources Conference, Port of Spain, Trinidad and Tobago, 9–11 June. The paper has not been peer reviewed.

In the 30 years of operations on Suriname’s Tambaredjo field, the prime mechanism for lifting the 15.6 °API crude to surface has been that of progressing cavity pumps (PCPs). In the period from 2008 to 2012, an annual average of 580 downhole failures occurred, 54% of which were caused by tubing leaks. In an effort to reduce these tubing failures, a pilot program was commenced to install rod guides in wells with the highest failure rate and to install a 25-ft sucker rod directly above the pump.

Introduction

Currently, Staatsolie Maatschappij Suriname produces from the Tambaredjo, Calcutta, and Tambaredjo Northwest fields, as illustrated in Fig. 1. These oil fields are located in a marshy area on the coastal plain of Suriname approximately 55 km west of Paramaribo.

The crude oil contains low sulfur content (0.65 wt%) and 1 wt% asphaltene and has an average viscosity of 500 cp at reservoir conditions. The water/oil ratio is 7 and the gas/oil ratio is less than 50 scf/bbl as of December 2013. The average daily production from these fields reached 16,700 BOPD from 1,549 active producing wells completed in shallow unconsolidated-sand reservoirs with depths ranging from 700 to 1,500 ft. The Tambaredjo oil field is the oldest and largest of these fields, with 1,130 active producers contributing two-thirds of the overall production.

Mechanical Wear of Tubing

The majority of tubing failures in the Tambaredjo field are repetitive in nature. Mechanical wear is the removal of metal caused by the frictional rubbing of the sucker-rod string against the inner wall of the tubing. This frictional rubbing can be increased by the movement of the rod string, often characterized as stick/slip.
Technology Focus: EOR Operations (June 2015)
Authors: Goodyear Stephen
Published: May 2016

Technology Focus

What a difference a year can make! Back in June 2014, when the EOR Operations feature last appeared in JPT, Brent was trading at more than USD 100/bbl. At the time of writing this year, the oil price has halved to near USD 50/bbl. However, despite current prices, it is widely believed that the age of easy oil is over and that, as we seek to replace reserves and meet growing energy demand, we will be driven to develop more- technically-difficult and -capital-intensive volumes. This will be through exploration in ever-more-remote and -challenging environments, the development of known but more-difficult reservoirs, or the development of brownfield projects by applying improved-oil-recovery and enhanced-oil-recovery (EOR) techniques to existing assets.

Worldwide, more oil is left behind in reservoirs than is recovered. The potential of EOR is significant: A 1% increase in the efficiency of hydrocarbon recovery could deliver 3 additional years of annual global production at today’s level. EOR is about monetizing known barrels in well-characterized formations through the application of commercially proven recovery techniques such as miscible-gas and steam injection and with an eye to the maturation of less-widely-applied or emerging EOR technologies such as alkaline/surfactant/polymer flooding or low-salinity flooding.

Developing these EOR plays requires the willingness to step beyond our comfort zones and the commitment to longer-term project timelines, which may require a piloting or demonstration phase before large-scale application. That is not very different from opening up a new exploration play, except that we know with certainty that the hydrocarbons exist.

Successful implementation of more-complex recovery processes benefits from a systems approach in which every aspect of the project is considered, from the injectant sourcing through to piloting, facilities design, project phasing, surveillance, and reservoir management. Alongside this there is a need to develop and deepen skills to move from primary- or secondary-recovery processes to EOR. SPE plays an important role in this by sharing knowledge and experience of operating projects. The papers summarized in this section and suggested in the recommended additional reading all speak to different aspects of the EOR journey. I hope you will enjoy reading them and be inspired to look for EOR opportunities in your fields.
Numerical Analysis for Promoting Uniform Development of Simultaneous Multiple-Fracture Propagation in Horizontal Wells
Authors: Wu Kan , Olson Jon , Balhoff Matthew T. , Yu Wei
Published: May 2016

Multistage hydraulic fracturing, together with horizontal drilling, plays an important role in the economic development of unconventional reservoirs. However, according to field analysis of stimulation effectiveness, only a small percentage of perforation clusters contribute to most of the well production. One reason for this low effectiveness is that multiple fractures do not take the same amount of fluid and proppant because of the interaction between hydraulic fractures (i.e., stress-shadow effects). Unfortunately, how best to minimize the negative effects of stress shadowing is still not fully understood in the petroleum industry. In this paper, we analyze this problem to promote more-uniform fracture growth by use of a complex hydraulic-fracture-development model.

We use our fracture-propagation model, which couples rock deformation and fluid flow in the fracture and horizontal wellbore. The model assumes homogeneous linear-elastic rock medium and does not consider proppant transport in multiple fractures. Partitioning of flow rate between multiple fractures is calculated by use of the principles of flow through an electric-circuit network. Fracture development is dominated by flow-rate distribution, which is controlled by flow resistance within the fractures. For simultaneous multiple-fracture propagation, nonuniform flow-rate distribution is induced because stress-shadow effects exert additional flow resistance on the interior fractures. To balance the extra resistance introduced by the effects, we investigated two adjustment approaches to promote uniform fracture development. The first approach was to adjust perforation number or diameter to increase flow resistance entering the exterior fractures. The second was to mitigate stress-shadow effects through management of nonuniform fracture spacing. We found that decreasing perforation diameter or the number of exterior fractures can divert fluid into the interior fractures and promote even fracture growth. Stress-shadow effects can be mitigated by moving the two interior fractures away from each other and toward the exterior fractures. The key mechanism is to maintain even flow resistance within each fracture and facilitate fractures to obtain the same amount of injection fluid. Furthermore, flow resistance is affected by near-wellbore fracture tortuosity, natural fractures, and stress heterogeneity in the reservoirs. These factors might also be effectively controlled by adding extra flow resistance to pass perforations, provided that this extra resistance is larger than the extra resistance introduced by the factors.

This work analyzes the problem of uneven development of multiple fractures along the horizontal wellbore and provides new insights into how to control simultaneous multiple-fracture propagation. It offers potential approaches for engineers to apply in the field to optimize hydraulic-fracturing-treatment design, thereby maximizing well production cost-effectively.
Rupert Brooke’s Neo-Paganism
Authors: M. Pavlović Tomislav
Published: May 2016

Rupert Brooke (1887-1915) embodies the myth of the Great War but after his sudden death his war poems tended to be disapproved of.  His pre war Georgian lines are also dismissed on account of their effete pestoralism and alleged escapism. It seemed as if both the critics and the audience simply failed to understand the subtext of his poems that reveals a magnificent spiritual pilgrimage undertaken by a poet in the age of anxiety. In search of the calm point of his tumultuous universe Brook varies different symbolic patterns and groups of symbols thus disclosing the lasting change of his poetic sensibility that range from  purely pagan denial of urban values and the unrestrained blasphemy up to the true Christian piety. Our analysis affirms him the true modernist poet, a cosmopolitan mind, always apt to accumulate new experiences and it is certain that his work will be seen in quite a new light in the decades to come.
L. F. Marsigli – The First Antiquarian of Serbia
Authors: V. Mihajlović Vladimir
Published: May 2016

The all-encompassing changes that have shaped the west of Europe during the early modern period, introducing new ways of perceiving (and investigating) the whole universe, and each individual as well, have decisively influenced the foundations of our discipline. The special credit should be paid to the antiquarian movement and the generations of its followers. On the other hand, according to the general consensus, the region of modern Serbia, being a part of the Ottoman Empire, has not attracted the curiosity of the antiquarians until the second half of the 18th century. Numerous reviews of the history of archaeology in Serbia, both by local and foreign authors, consolidate this view. However, the life and work of Luigi Ferdinando Marsigli (1658—1730) offers a significantly different view of the roots of archaeology in these parts. Born in an aristocratic family in Bologna, highly educated, serving in the Austrian Imperial army by the end of 17th century, Count Marsigli spent almost two decades in the lands of the middle Danube valley. During the Vienna war (1683—1699), and then fortifying the new frontier after the Peace of Karlovac (1699—1701), L. F. Marsigli got acquainted with the rich heritage (above all from the Roman times) of the region. He published the results of his research in the volume entitled Danubius Pannonico-Mysicus. The very title suggests the importance Marsigli assigned to the Classical past, whose vestiges he described in the second of six books of this work. Under the title De antiquitatibus Romanorum ad ripas Danubii, in accordance with the best antiquarian traditions, the learned Count offers a comprehensive and systematic review of the Roman material culture along the Danube banks – in his own words – of Pannonia and Moesia. Marsigli’s antiquarian endeavours in the field and the subsequent published accounts establish a massive contribution to the antiquarian tradition in the region of modern Serbia, and then – indirectly, through the works of the 19th century authors – to Serbian archaeology in general.
The Work of Jovan Cvijić and Vladimir Dvorniković through the Prism of Serbian Archaeology
Authors: Palavestra Aleksandar , Milosavljević Monika
Published: May 2016

From the point of view of the fact-oriented history of archaeology, there is no reason to consider the works of Jovan Cvijić and Vladimir Dvorniković. However, if we consider the history of ideas that have fundamentally determined the course of Serbian archaeology, it is relevant to examine the contributions of other disciplines and their key representatives. In the case of Serbian archaeology, the estimation of interdisciplinary transfers of ideas must be approached critically and with great caution, due to the deeply rooted tradition of not explicating the theoretical and methodological base of research. In other words, well into the 20th century, archaeologists have very rarely referred to authors from other fields of research, especially when dealing with general social phenomena. Serbian archaeology has tended to be a-theoretical, and the ideas of social development, social dynamics, or the rules of social behaviour have been considered as “implicit knowledge”, that need not be explained. However, these knowledges are counted upon, and are still considered as indubitable; there lies the power of “common points”, whose origins and genesis are very hard to discern. In this case study, the aim is to: 1) reconsider the link between the culture-historical archaeology in Serbia and cultural belts of Jovan Cvijić; and then to 2) attempt to understand the genealogy of the idea of continuity in Serbian archaeology. In other words, we shall challenge the apparently very logical supposition that our culture-historical archaeology has used the foundations laid by Jovan Cvijić, both in the case of cultural belts and of continuity. It will be demonstrated that archaeologists have skipped the lesson of Cvijić’s anthropo-geographical school of cultural circles, as well as his rejection of deep continuity in the Balkans. This means that the source of the archaeological idea of the elements of (material) culture that may be preserved from prehistory to the present, must be sought for in another direction, outside the work of Cvijić. One possible solution is to acknowledge the worlds of ideas of Milan Budimir and Veselin Čajkanović, along with very explicit ideas of continuity of less known Niko Županić and more prominent Vladimir Dvorniković, who modified and widely disseminated the ideas of Županić.
Musealization without museology: National museums and fashion exhibitions between history, theory and practice
Authors: Žarić Stefan
Published: May 2016

Studies of the theory and history of fashion, which were up until recently grouped with culture studies, gender studies, communicology, art history and anthropology are, on the academic map of the 21st century being established as separate disciplines. Consolidating these contexts, the affirmation of fashion studies has been most prevalent within the museology of fashion, as it - or rather - fashion museology is becoming one of the leading tendencies within contemporary museum practices. This paper views fashion as a specific kind of system, coded through sociocultural codes, and finds the reason for the ever-increasing number of exhibitions of fashion on the international as well as the national museum scene in the codes of fashion which oscillate between the aesthetic and the commercial. By affirming fashion as an art form on the one hand and increasing the profitability of the institution on the other, fashion exhibitions enable museums to become “fashionable” – to keep up with contemporary, more liberal exhibition concepts. Despite the fact that in this year there have been a large number of fashion exhibitions in national museums, fashion is still without its own museology, a scientific theory which would explain it as a museum phenomenon. The exhibits are interpreted historically, while explaining their utilitarian and aesthetic value, while the question of why fashion is exhibited as an art form or a kind of cultural production to the consumer of the exhibition - the visitor – remains unanswered. By analyzing historical events which conditioned the museum exhibiting of fashion as well as the different conceptions of its exhibition, the author strives to – through the juxtaposition of international and national exhibitions catch sight of the causes of the lack of a museology of fashion, and open up the issue of its affirmation within the professional academic and museum community of Serbia.
What Makes People Good or Bad?
Authors: Žikić Bojan
Published: May 2016

The aim of this paper is to discuss thinking of people which is informed by culture, social institutions and personal experiences, and which shows significant tendency not to operate in simply binary mode when it is about people from somebody’s imminent social surrounding. Two examples are presented form the nowadays Belgrade. It is argued that at least people of this particular social context, who tend to deploy more nuances in the judging on and labelling their neighbours seen as bringing some kind of disruption of the social order then to those people they think as of generic categories only, are informed by such social/cultural perspectives on human being which paramount it, but also suggest its capacity for serious wrongdoing.
Football and film: „The Coach“
Authors: Kovačević Ivan
Published: May 2016

The film „The Coach“ (Trener, 1978) directed by Puriša Đorđević, uses the film’s story as a prism through which many events from the reality of football in that time period as well as the past represented by the war and death camps are viewed, and contrasts this with the economic and social context of the time in which the film was made. When the titular coach of a big football club goes abroad to Germany to work, his decision is situated at the crossroads of the professionalization of football and the economic social reality on the one hand and the reminiscence about war and German death camps and their victims on the other. The results of a football match which will determine whether the German or the Yugoslav team will qualify for the final of an important European championship symbolize the results of the passage of time and the 25 year-long development of Germany and Yugoslavia after the war.
Evaluating Intercropping (Living Cover) and Mulching (Desiccated Cover) Practices for Increasing Millet Yields in Senegal
Authors: Trail Patrick , Abaye Ozzie , Thomason Wade E. , Thompson Thomas L. , Gueye Fatou , Diedhiou Ibrahima , Diatta Michel B. , Faye Abdoulaye
Published: May 2016

Located within the Sahel region, Senegal faces several agricultural production challenges. Limited rainfall, poor soil fertility, and insufficient agronomic inputs all contribute to low pearl millet [Pennisetum glaucum (L.) R. Br.] yields. This study was initiated to assess the potential for increasing millet yields through intercropping (living cover) and mulching (desiccated cover) practices. During the 2013 and 2014 growing seasons, pearl millet was intercropped with cowpea [Vigna unguiculata (L.) Walp.], mungbean [Vigna radiata (L.) Wilczek], or grown under mulch (neem [Azadirachta indica] leaves applied at 2 t ha−1). Field trials were conducted at two sites within Senegal's central millet–peanut (Arachis hypogaea L.) basin, in Bambey (14°41′38″ N, 16°28′12″ W) and Thiés (14°45′45″ N, 16°53′14″ W). Soil moisture and plant N (based on the normalized difference vegetation index [NDVI]) were measured in addition to yield. When intercropped with a legume, millet grain yields increased up to 55% compared to millet alone. The combined grain yields under intercropping (millet + legume) were always higher than yields of millet alone, up to 67% in Bambey. Mulching increased soil moisture up to 14%, with yield increases of up to 70% over millet with no mulch. Plant N increased in both intercropped and mulched millet, with NDVI increases up to 21% with mulch and 16% when grown with a legume (prior to flowering). These yield increases were achieved using resources that are available and affordable to small‐scale producers in the region (seeds and mulch), and did not require the addition of fertilizer inputs.

Core Ideas

Intercropping millet with cowpea or mungbean was found to increase millet grain yield compared to millet that was grown alone. Yield increases as high as 55% were recorded.

Increasing ground cover through mulching of millet was found to significantly increase soil moisture compared to millet grown with no additional ground cover. Soil moisture increased up to 14% in mulched soils compared to unmulched soils.

Intercropping millet with a legume (cowpea or mungbean) always resulted in a higher combined yield than growing either the millet or the legume by itself.
Quantifying the Agronomic and Economic Performance of Hybrid and Conventional Rice Varieties
Authors: Nalley Lawton , Tack Jesse , Barkley Andrew , Jagadish Krishna , Brye Kristofor
Published: May 2016

The objective of this research is to estimate and compare the agronomic and economic performance of hybrid and conventional rice (Oryza sativa L.) varieties in the Mid‐South of the United States. The introduction of hybrid rice for commercial production has given producers an alternative to traditionally cultivated, conventional (inbred) lines. Adoption rates of hybrid rice have grown to over 40% in some regions of the Mid‐South; however, its milling quality is a concern. Producer revenues are based on both rough (paddy) rice yield and postharvest processing, or milling. Hence, producers receive prices at the mill that are directly affected by the milling quality of the delivered rice. In this study, we used 3500 observations from 2003 to 2013 with detailed weather, yield, and milling data in 23 locations across Arkansas and Mississippi to estimate differences in the paddy (quantity) and milled rice yield (quality) between hybrid and conventional cultivars. Moreover, we used a multivariate regression framework to estimate yields and economic returns for Clearfield (imidazolinone tolerant; CL) and non‐CL varieties. We found that hybrid varieties had a paddy yield premium over conventional varieties of 1.66 Mg ha−1 and 1.82 Mg ha−1 for CL varieties. The results show that hybrids had a lower milling quality than the conventional varieties, yet the milling quality exceeded industry standards in 97.5% of the observations. On average, hybrid varieties outperform conventional rice varieties in terms of absolute profit per hectare and relative profit margin, defined as profit per cost of production, for both CL and non‐CL varieties.

Core Ideas

Rice producers’ revenue is based on both rough rice yield and the subsequent milling outcome.

Early hybrid lines had high paddy but low milling yields which questioned their economic status.

We find that hybrids had a distinct paddy yield advantage over inbred lines.

We find hybrids had a lower milling quality than inbred lines but exceed industry standards.

We find hybrids outperform inbred varieties in absolute, profit ha−1 and relative profit margin.
Research of the Inverter Control Strategy Based on the Ant Colony Algorithm and the Fuzzy Control Method
Authors: Xian Ren
Published: May 2016

This paper proposes a hybrid control strategy of single-phase inverter, and it makes combination the fuzzy control technology and instantaneous feedback control technology of the current, and it solves the problem of load uncertainty and load model is difficult to established. Through ant colony optimization algorithm the problem that control parameters to solve the problem of the fuzzy control are depended on expert experience is solved. And on the basis of fuzzy voltage outer, the loop current inner loop is added, and through using current loop, it can effectively restrain the load disturbance, current limiting step in the current inner ring at the same time, thus it solve the inverter power supply for impact load adaptability. It not only can make the inverter power supply system output high quality steady-state voltage waveform, but also it can get fast dynamic response. Finally under the environment of Matlab simulation, the simulation results are demonstrated, the feasibility and effectiveness of the proposed compound control strategy are also verfied.
Lithium-Induced Downbeat Nystagmus and Horizontal Gaze Palsy
Authors: Jørgensen Jesper Skovlund , Landschoff Lassen Lisbeth , Wegener Marianne
Published: May 2016

We report a case of lithium-induced downbeat nystagmus and horizontal gaze palsy in a 62-year-old woman who was treated for a bipolar affective disorder with lithium carbonate for one month. At presentation serum lithium was within therapeutic range. No alternative causes of the ocular motility disturbances were found, and the patient improved significantly as lithium carbonate was discontinued.
Definition of Seismic Vulnerability Maps for Civil Protection Systems: The Case of Lampedusa Island
Authors: Asteris Panagiotis G. , Cavaleri Liborio , Trapani Fabio Di , Macaluso Giuseppe , Scaduto Gaia
Published: May 2016

The opportunity to locate and quantify the major criticalities associated to natural catastrophic events on a territory allows to plan adequate strategies and interventions by civil protection bodies involved in local and international emergencies. Seismic risk depends, most of all, on the vulnerability of buildings belonging to the urban areas. For this reason, the definition, by a deep analysis of the territory, of instruments identifying and locating vulnerability, largely favours the activities of institutions appointed to safeguard the safety of citizens. This paper proposes a procedure for the definition of vulnerability maps in terms of vulnerability indexes and critical peak ground accelerations for mid-small urban centres belonging to Mediterranean areas. The procedure, tested on the city centre of the Island of Lampedusa, is based on a preliminary historical investigation of the urban area and of the main formal and technological features of buildings involved. Moreover, the vulnerability of the constructions is evaluated by fast assessment methods (filling of evaluation forms). The vulnerability model, allowing the definition of the fragility curves, is calibrated on the basis of the results of an identification process of prototype buildings, selected to be adequately representative. Their characterizations have been provided using the results of an experimental dynamic investigation to develop high representative numerical model. Critical PGA values have been determined by pushover analyses.The results presented provided an unambiguous representation of the major criticalities with respect to seismic vulnerability and risk, of the city centre of the island, being a suitable tool for planning and handling of emergencies.