bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fluid Flow in Fractures Visualized by MRI During Waterfloods at Various Wettability Conditions – Emphasis on Fracture Width and Flow Rate
Authors: Aspenes E. , Graue A. , Baldwin B. A. , Moradi A. , Stevens J. , Tobola D. P. 
Published: June 2014

Abstract
The mechanism of wetting phase flow into and across fractures was determined for stacked core plugs using highly water-wet and less water-wet chalk and several fracture widths and flow rates. Magnetic resonance imaging (MRI) was used to measure 2D saturation distributions in the matrix along the flow axis and 2D spatial distributions of the wetting and nonwetting phases in the fracture.
For the strongly water-wet system, even at high flow rates, the inlet plug reached its spontaneous imbibition endpoint water saturation before the water entered the fracture. When water entered the fracture, gravity segregation resulted in the displacement of oil from the bottom of the fracture and upward. The rate of displacement was determined by the water injection rate. At less-water-wet conditions, the water produced a dispersed front that allowed water; at both high and low flow rates, to flow across the fracture and into the outlet plug as if there was no fracture. MRI images showed that water droplets formed on the outlet face of the inlet plug, formed bridges across the fracture and provided a path for water movement into the outlet plug while the oil phase was still being produced from the inlet plug. With time the bridges grew in size, coalesced and dropped to the bottom of the fracture eventually filling the fracture with water. At wider fracture widths the coalescence occurred earlier and the fracture was filled sooner. The capillary continuity provided by the bridges suggested a viscous component contributing to the total oil recovery in the fractured system for less than highly water-wet conditions.
The Technical and Economic Challenge of "Mature Gas Fields": The Giant Altmark Field, a German Example
Authors: Rückheim J. , Voigtländer G. , Stein-Khokhlov M. 
Published: June 2014

Abstract"Mature" fields today account for over 70% of the worldwide oil and gas production.In view of the increasing global demand for fossil fuels during the next decades, it is the task of the E&P industry to develop innovative and cost effective technologies to substantially increase the rate of recovery from today's average of 35% to over 50% for oil and from about 70% to over 80% ultimate recovery for gas. To achieve this goal it will be necessary to optimise the efficiency of operation and maintenance while minimizing environmental impact. In addition to the exploitation of new technologies the industry needs to be open minded for modern management techniques and new business models in order to keep control of the technical and economic risks.The successful integration of various new technologies will have a major effect on the reserve renewal rate as 1% increase in recovery would provide an additional 2 years of supply.Main focus will be on the presentation of the giant and mature Altmark gas field - with 9.4 Tcf GIIP the biggest gas field in Germany - which has currently reached a recovery factor of 78%. It will be shown how the operator, EEG, is applying various technologies and an alternative business model to constantly increase the field life and hence reserves.Due to the field specifics, e.g. high temperature, constantly decreased reservoir pressure and high formation water salinity, the main operational challenges the operator is facing are rock stability, water lifting, scales removal and remediation of formation damage, a variety of reserves development and maintenance methods are applied like sidetracks and chemical treatments with surfactants and polymers, respectively.Apart from presenting the range of well treatment and monitoring technologies, another important topic which will be presented in this paper is the economic approach to efficiently handle the compartmentalised brownfield reservoir and production issues that allow the expected ultimate recovery to exceed 80%.
Unsteady Flow to a Well Produced at Constant Pressure in a Fractured Reservoir
Authors: Raghavan Rajagopal , Ohaeri Charles U. 
Published: June 2014

Abstract
The objective of this study is to delineate the characteristics of a well flowing at a constant pressure in a naturally fractured reservoir. Methods are suggested to determine system parameters. We consider both pseudosteady state and unsteady state fluid transfer from the matrix system to the fracture system. If pseudo steady state flow governs the transfer of fluids, then the rate data exhibit an initial period of decline indicating the depletion of the fracture, followed by a period in which the rate is nearly constant and finally a rapid decline in rate. The period of constant rate reflects replenishment of the fracture by the matrix. If unsteady state flow in the matrix governs the well response, then the constant rate period does not exist. Instead, the rate vs. time graph is a straight line on log-log coordinates with slope equal to 0.5. That is, a linear period is evident. This characteristic response is evident in all the unsteady state flow models discussed in the literature. Thus, it is possible to determine the flow regime in the matrix by analyzing rate data.
The flow periods described above will be evident if αkm/kf ≤ C/A. Here,k is the permeability, A is the drainage area, α is a parameter which depends on the characteristic length of the matrix element (block) and C is a constant which also depends on the shape of the matrix element. The symbols m and f represent the matrix and fracture, respectively.
Metabolic Syndrome, C-Reactive Protein, and Mortality in U.S. Blacks and Whites: The Reasons for Geographic and Racial Differences in Stroke (REGARDS) Study
Authors: Suzuki Takeki , Voeks Jenifer , Zakai Neil A. , Jenny Nancy Swords , Brown Todd M. , Safford Monika M. , LeWinter Martin , Howard George , Cushman Mary 
Published: May 2014

OBJECTIVE
We evaluate associations of metabolic syndrome (MetS), C-reactive protein (CRP), and a CRP-incorporated definition of MetS (CRPMetS) with risk of all-cause mortality in a biracial population.

RESEARCH DESIGN AND METHODS
We studied 23,998 participants in the Reasons for Geographic and Racial Differences in Stroke (REGARDS) cohort, an observational study of black and white adults ≥45 years old across the U.S. Elevated CRP was defined as ≥3 mg/L and MetS by the revised Third Report of the Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults (Adult Treatment Panel III; ATP III) criteria (three of five components). CRPMetS was defined as presence of three out of six components, with elevated CRP added to ATP III criteria as a sixth component. Cox models were used to calculate hazard ratios (HRs) for all-cause mortality, and population attributable risk (PAR) was calculated. Stratified analyses based on race and diabetes status were performed.

RESULTS
There were 9,741 participants (41%) with MetS and 12,179 (51%) with CRPMetS at baseline. Over 4.8 years of follow-up, 2,050 participants died. After adjustment for multiple confounders, MetS, elevated CRP, and CRPMetS were each significantly associated with increased mortality risk (HRs 1.26 [95% CI 1.15–1.38], 1.55 [1.41–1.70], and 1.34 [1.22–1.48], respectively). The PAR was 9.5% for MetS, 18.1% for CRP, and 14.7% for CRPMetS. Associations of elevated CRP and of CRPMetS with mortality were significantly greater in whites than blacks, while no differences in associations were observed based on diabetes status.

CONCLUSIONS
By definition, CRPMetS identifies more people at risk than MetS but still maintains a similar mortality risk. Incorporating CRP into the definition for MetS may be useful in identifying additional high-risk populations to target for prevention.
Overnight Glucose Control With an Automated, Unified Safety System in Children and Adolescents With Type 1 Diabetes at Diabetes Camp
Authors: Ly Trang T. , Breton Marc D. , Keith-Hynes Patrick , De Salvo Daniel , Clinton Paula , Benassi Kari , Mize Benton , Chernavvsky Daniel , Place Jéróme , Wilson Darrell M. , Kovatchev Boris P. , Buckingham Bruce A. 
Published: May 2014

OBJECTIVE
To determine the safety and efficacy of an automated unified safety system (USS) in providing overnight closed-loop (OCL) control in children and adolescents with type 1 diabetes attending diabetes summer camps.

RESEARCH DESIGN AND METHODS
The Diabetes Assistant (DIAS) USS used the Dexcom G4 Platinum glucose sensor (Dexcom) and t:slim insulin pump (Tandem Diabetes Care). An initial inpatient study was completed for 12 participants to evaluate safety. For the main camp study, 20 participants with type 1 diabetes were randomized to either OCL or sensor-augmented therapy (control conditions) per night over the course of a 5- to 6-day diabetes camp.

RESULTS
Subjects completed 54 OCL nights and 52 control nights. On an intention-to-treat basis, with glucose data analyzed regardless of system status, the median percent time in range, from 70–150 mg/dL, was 62% (29, 87) for OCL nights versus 55% (25, 80) for sensor-augmented pump therapy (P = 0.233). A per-protocol analysis allowed for assessment of algorithm performance. The median percent time in range, from 70–150 mg/dL, was 73% (50, 89) for OCL nights (n = 41) versus 52% (24, 83) for control conditions (n = 39) (P = 0.037). There was less time spent in the hypoglycemic range &lt;50, &lt;60, and &lt;70 mg/dL during OCL compared with the control period (P = 0.019, P = 0.009, and P = 0.023, respectively).

CONCLUSIONS
The DIAS USS algorithm is effective in improving time spent in range as well as reducing nocturnal hypoglycemia during the overnight period in children and adolescents with type 1 diabetes in a diabetes camp setting.
Lower-Extremity Amputation Risk Is Associated With Variation in Behavioral Risk Factor Surveillance System Responses
Authors: Margolis David J. , Hoffstad Ole , Weibe Douglas J. 
Published: May 2014

OBJECTIVE
To determine whether regional variation in the rate of lower-extremity amputation (LEA) is associated with health behaviors.

RESEARCH DESIGN AND METHODS
This was a cross-sectional prevalence study of merged data from the U.S. Census, Medicare parts A and B, and the Behavioral Risk Factor Surveillance System. We used regression models to determine whether previously described regional variation in LEA incidence was associated with responses to the Behavioral Risk Factor Surveillance System. Regions were created using Dartmouth Atlas Health Referral Regions.

RESULTS
The mean and median incidence of LEA was 4.5 per 1,000 persons with diabetes; the rate varied from 2.4 to 7.9 LEA per 1,000 persons by health referral region. Statistically significant inverse associations were found between LEA and the rate of patients reporting colorectal screening (P &lt; 0.0001) or the participation in diabetes management classes (P = 0.018). Most other factors, including daily foot evaluations, were not associated with a decreased risk of LEA. These findings were also found to be associated with geographically clustered regions known for increased risk of LEA.

CONCLUSIONS
LEA is known to vary by region in the U.S., and regions with higher rates of LEA tend to be clustered together. Some of this variation may be explained by health behaviors in those regions, such as attending diabetes education classes or better health prevention habits (e.g., colon cancer screening). It should be possible to prevent unwanted LEAs by educating individuals with diabetes and foot ulcers about the need for participation in foot ulcer treatment.
Evaluation and Measurement in Local Public administration
Authors: Dobó Marianna 
Published: June 2014

Abstract
The judgement of self-governmental operation and the evaluation of providing public services have been focused on since the democratic transformation. By the 1st of January 2012 (CXCIX/2011. and CLXXXIX/2011. law) amendment of the Hungarian on civil servants, the civil servants work performance evaluation system has been introduced with the consideration of the principles of the civil servants carrier programme. The purposes of this evaluation system are made in order to grow the workers management efficiency in the field of public service, and also to improve their work standards.
Moral Organisation: Dream Or Reality
Authors: Hornyák Andrea 
Published: June 2014

Abstract
In the area of the financial services, the contracts are not between equal signatories to a treaty. On one side there is a professional financial institution while on the other side there is a client with lack of information and weak ability to enforce interest. The high school student age group is in a rather exposed situation because they have to make very serious financial decisions. As far as Hungary concerned, a negative social mood towards banks is accompanied by poor financial literacy, and therefore, financial institutions have a lot to do in order to gain confidence in the young generation. However, in the long term, a financial institution can only achieve market success if it can integrate moral viewpoints into its corporate policy.
Monte Carlo Simulation in Random Coefficient Logit Models Involving Large Sums
Authors: Sándor Zsolt 
Published: June 2014

Abstract
We study Monte Carlo simulation in some recent versions of random coefficient logit models that contain large sums of expressions involving multivariate integrals. Such large sums occur in the random coefficient logit with demographic characteristics, the random coefficient logit with limited consumer information and the design of choice experiments for the panel mixed logit. We show that certain quasi-Monte Carlo methods, that is, so-called (t, m, s)-nets, provide improved performance over pseudo-Monte Carlo methods in terms of bias, standard deviation and root mean squared error.
Haptic Vision and the Experience of Difference in Agnès Varda’s Les Glaneurs et la glaneuse (2000)
Authors: Chareyron Romain 
Published: June 2014

Abstract
This article investigates how, in her documentary The Gleaners and I (Les Glaneurs et la glaneuse, 2000), French director Agnès Varda relies on the establishment of haptic vision in order to merge the experience of her own body with the representation of another “body,” that of people living at the margins of society and gleaning for food. In so doing, the article will bring out the director’s social and aesthetic concerns by positing that Varda turns to a sensuous depiction based on the textural properties of the image to deter any form of instrumental vision regarding the representation of the body and its connections to pre-determined norms of conduct. The article will show that, in its portrayal of a socially and economically alienated group of people, as well as in the rendering of her aging body, Varda’s miseen- scène brings forth a tactile form of knowledge that calls for a humanistic approach, thus defusing any form of mastery of the gaze over the image.
Efficient computing of n-dimensional simultaneous Diophantine approximation problems
Authors: Kovács Attila , Tihanyi Norbert 
Published: June 2014

Abstract
In this paper we consider two algorithmic problems of simultaneous Diophantine approximations. The first algorithm produces a full solution set for approximating an irrational number with rationals with common denominators from a given interval. The second one aims at finding as many simultaneous solutions as possible in a given time unit. All the presented algorithms are implemented, tested and the PariGP version made publicly available.
Nonexistence of a Kruskal–Katona type theorem for double-sided shadow minimization in the Boolean cube layer
Authors: Bashov Maksim 
Published: June 2014

Abstract
A double-sided shadow minimization problem in the Boolean cube layer is investigated in this paper. The problem is to minimize the size of the union of the lower and upper shadows of a k-uniform family of subsets of [n]. It is shown that if 3 ⋜ k ⋜ n−3, there is no total order such that all its initial segments have minimal double-sided shadow.
Parallel enumeration of degree sequences of simple graphs II
Authors: Iványi Antal , Gombos Gergő , Lucz Loránd , Matuszka Tamás 
Published: June 2014

Abstract
In the paper we report on the parallel enumeration of the degree sequences (their number is denoted by G(n)) and zerofree degree sequences (their number is denoted by (Gz(n)) of simple graphs on n = 30 and n = 31 vertices. Among others we obtained that the number of zerofree degree sequences of graphs on n = 30 vertices is Gz(30) = 5 876 236 938 019 300 and on n = 31 vertices is Gz(31) = 22 974 847 474 172 374. Due to Corollary 21 in [52] these results give the number of degree sequences of simple graphs on 30 and 31 vertices.
Surrealist Senses: Marcel Jean’s Representations of Budapest
Authors: Balázs Imre József 
Published: June 2014

Abstract
The paper analyses the spatial representations and the self- representajtions of the surrealist author Marcel Jean in his late autobiography entitled Au galop dans le vent, where he reflects upon his life and upon the seven years that he spent in Budapest with his wife between 1939 and 1945, and also in his book Mnésiques, published in 1942 in Budapest. In this latter book the presence of the surrealist mythology of transformation can be interpreted as a representation of the dislocated self, Au galop dans le vent showing the historical and biographical contexts of these experiences.
Europe’s Fe/Male Identity
Authors: Mihály Vilma 
Published: June 2014

Abstract
The following study discusses Europe’s identity focussing upon questions such as how Europa’s destiny-the next of kin from Greek mythology-has influenced that of the continent, the relationship between Europe and its nations or Europe’s role in the world. According to French anthropologist Annick de Souzenelle. there is a lunar, that is female and a solar, that is a male side to both Europa and Europe but whereas the mythical figure failed to find and integrate the opposite within herself, Europe does still have the opportunity to discover its solar aspects and reach unity within itself and the world as a whole. Apart from the theory the present paper also tries to give examples from different fields of study such as politics, philosophy and literature, which shall underline Europe’s fe/male identity and role. e. g. Winston Churchill's Iron Curtain Speech. Jose Ortega y Gasset’s Meditation on Europe. Sándor Márai’s Europe’s Abduction or Czeszlaw Milosz’s Native Realm.
Representations of Female Alterity in Contemporary Hungarian and Romanian
Authors: Pieldner Judit 
Published: June 2014

Abstract
The present study carries out a comparative/contrastive analysis of two ways of contemporary Hungarian and Romanian film discourse, namely magic realism and micro-realism, and will focus on the representation of the woman in the contemporary films entitled Witch Circle (Dezső Zsigmond, 2009),exploring a subversive female mythologem of a confined traditional community, that of the Csángó people, Bibliothéque Pascal (Szabolcs Hajdú, 2010),which creates a private mythology, materialised in form of surrealist images, of the female self interpreting herself out of her conditions, and Beyond the Hills (Cristian Mungiu, 2012), drawing its topic from a real event -reality generating fiction-that inspired Tatiana Niculescu Bran’s Deadly Confession [Spovedanie la Tanacu), Judges’ Book [Cartea Judecătorilor), as well as Zsolt Láng's The Monasteryr of Protection (Az oltalom kolostora). Beyond dealing with related female patterns, the films imder discussion are engaged in mediating collective and private mental representations, as well as in creating film narratives with the convergent feature of juxtaposing the real and the mythical. The films approach the topic from distinct possibilities of cinematic representation and offer, in my view, a complementary and intercultural image of the woman trapped between the East and the West, between social and religious institutions and victimised by the stereotypical view of society.
The Multipurpose New Wind Tunnel STU
Authors: Hubová Oľga , Lobotka Peter 
Published: June 2014

Abstract
BLWT STU tunnel, which is currently in test mode, will in its two measuring sections allow to prepare measurements with laminar and turbulent wind flow. The front section will fulfill technical parameters of steady flow for testing sectional models and dynamically similar models. In the rear operating section it is necessary to reproduce correctly the roughness of the earth surface covering different terrain categories and to prepare boundary layer suitable for experimental testing. Article deals with the brief description of the preparation and testing laminar flow and boundary layer for the urban terrain, which was simulated with rough elements and barriers of different heights. The attention is focused in getting get at least 1 meter height of boundary layer, which allows to optimize scale similarity of model.
Determination of Antioxidant Capacity, Flavonoids, and Total Phenolic Content in Eucalyptus and Clover Honeys
Authors: Ciappini María C. , Stoppani Fernando S. 
Published: June 2014

Abstract
Polyphenolic compounds reportedly produce physiological effects that are beneficial to health. Bee products are particularly rich in polyphenolic compounds. We determined the antioxidant capacity and the phenolic and flavonoid compounds content of 81 samples of honey. We used the Folin-Ciocalteu reagent method to evaluate the total phenolic content. The antioxidant activities were evaluated using in vitro scavenging assays of 2,2-diphenyl-1-picrylhydrazyl (DPPH ) and hydroxyl radicals (OH ), Trolox equivalent antioxidant capacity (TEAC ), and ferric-reducing antioxidant capacity (FRAC ). Total phenolic content ranged from 40.3 to 193.0 mg gallic acid equivalents (GAE )/100 g; the flavonoid content varied from 1.4 to 7.5 mg quercetin equivalents (QE)/100 g. Eucalyptus honeys exhibited significantly higher phenolic content and free radical-scavenging activity than clover honey samples (p<0.05 for all). Principal component analysis explained 73% of the differences observed in antiradical activity with respect to floral origin. Total phenolic content may be more useful than the radical-scavenging assay for detecting antioxidant capacity in honey; it also represents the variable that most appropriately discriminated among these honeys.