bluuebunny/crossref_metadata_2025 huggingface dataset:
Morphology, architecture, and evolutionary processes of the Zhongjian Canyon between two carbonate platforms, South China Sea
Authors: Lu Yintao , Li Wei , Wu Shiguo , Cronin Bryan T. , Lyu Fuliang , Wang Bin , Yang Taotao , Ma Benjun
Published: July 2018

Two isolated Neogene carbonate platforms (Xisha and Guangle carbonate platforms) have developed in the rifted uplifts since the Early Miocene. A large-scale submarine canyon system, the Zhongjian Canyon (ZJC), has developed in the tectonic depression between the two platforms since the Middle Miocene. High-resolution bathymetry data and 2D and 3D seismic data reveal the existence of the ZJC on the present seafloor, as well as in Neogene intervals. It exhibits typical characteristics of deepwater canyons that cut the surrounding rocks and indicate strong erosional features. The ZJC resulted from northwest–southeast strike-slip fault activities during synrift and postrift stages, and it periodically grew during the development of carbonate platforms since the Middle Miocene. We identified four cycles of parallel to subparallel high amplitude and dim reflectors in seismic data, which we interpreted as alternating canyon fill, based on the interpretation of seismic facies. Thus, the sedimentary evolution of the ZJC can be divided into four typical stages, which were in the Middle Miocene, Late Miocene, Early Pliocene, and Pleistocene. Considering the tectonic background of the carbonate platforms, as well as the on-going igneous activities, the sediment filling the canyon could be derived from a mixture of carbonate clasts, igneous clasts, mud, and silt. The laminar high-amplitude reflectors and dim-reflector package represented a fining-upward sedimentary cycle. The coarse-grained sediment in canyon fillings could be turbidites, carbonate debrites, and even igneous clasts. In contrast, the fine-grained sediment is likely to be dominated by pelagic to hemipelagic mud, and silt. This case study describes a deepwater canyon under a carbonate-dominated sedimentary environment and has significant implications for improving our knowledge of periplatform slope depositional processes. Furthermore, the insight gained into periplatform slope depositional processes can be applied globally.
Seismic characteristics and sedimentary record of the late Pleistocene delta offshore southwestern Hainan Island, northwestern South China Sea
Authors: Feng Yingci , Zhan Wenhuan , Chen Hongjun , Jiang Tao , Zhang Jinchang , Osadczuk Andrzej , Yao Yantao , Li Wei , Sun Jie , Guo Lei , Huang Wenkai , Li Shun , Zhang Wenyan
Published: July 2018

A late Pleistocene delta (Hainan palaeo river delta, HNPD hereafter) exceeding [Formula: see text] offshore Hainan Island, northwestern South China Sea (SCS), is investigated using high-resolution seismic and core data to understand the relationship between subaqueous delta development and climate drivers during the Last Glacial Period. The seismic data indicate general progradational configurations toward the southwest or southeast, indicating that the sediments from the eastern slope offshore southwestern Hainan Island were transported southwestward and southeastward. The average thickness of the delta sediment is approximately 35 m, and it has an arcuate shape surrounding the eastern slope. Therefore, the sediment provenances of the HNPD were mainly from the Red River drainage and Hainan Island. Comparison between the core dating results and the global sea-level curve indicates that the delta formed mainly during marine isotope stage 4 (65–56 ka). The topography of the basin, the sea-level change from low stand to high stand, and the southward oceanic currents driven by the glacial-period strong winter monsoon all contributed to the formation of the delta. Because the development of the delta required large riverine sediment input, we speculate that the main reason that the delta’s development ceased was the migration of the river channel along the eastern slope. Based on a comparison between the palaeobathymetric scenarios derived from published sea-level curves and the delta stratigraphy identified from the seismic profiles and cores, we have determined a possible range of relative sea level between 65 and 56 ka for the southwestern coast of Hainan Island, which might also be applicable for a broader region, i.e., the northern SCS.
Management of Presumed Spontaneous Intracranial Hypotension: A Case Report
Authors: Swallow Nathan , Doan Lisa V.
Published: July 2018

Spontaneous intracranial hypotension is an uncommon disorder with symptoms including postural headache that can be debilitating to patients. Diagnosis is mainly clinical, aided by imaging of the brain and spine with or without diagnostic procedures. Treatment can vary depending on severity, but most cases involve an epidural blood patch. We describe a case of a patient with clinical findings of spontaneous intracranial hypotension but with normal brain imaging. The patient responded to lumbar epidural blood patches and did not require additional tests to confirm the diagnosis.
Spinal Anesthesia in 2 Consecutive Cesarean Deliveries in a Parturient With Type 3 von Willebrand Disease: A Case Report
Authors: Parker Jeffrey W. , James Paula D. , Haley Susan L.
Published: July 2018

Type 3 von Willebrand disease is a rare and severe inherited bleeding disorder that carries an elevated risk for epidural and spinal hematoma as well as pregnancy-associated complications. Neuraxial anesthesia in these patients is controversial but may be considered if the parturient has received appropriate factor replacement. We present the case of a woman with type 3 von Willebrand disease and a severe bleeding history that underwent successful spinal anesthesia during successive cesarean deliveries. Our case highlights the importance of early multidisciplinary consultation and advance planning in the care of these rare events.
Rare Case of Transcutaneous Oxygen Desaturation in a Cancer Patient: A Case Report and Diagnostic Approach for a Recurrent Problem
Authors: Bachmann Kaspar F. , Nebiker Mathias , Johner Caroline , Bregy Rachel , Schaller André , Novak Urban , Jakob Stephan M.
Published: July 2018

We present a case of a 73-year-old cancer patient with low transcutaneous oxygen saturation who was transferred to the intensive care unit after deployment of the rapid response team. Differential diagnosis remained broad until methemoglobinemia (MetHb) was detected.

MetHb was induced by administration of rasburicase, which was given to prevent tumor lysis syndrome. In a follow-up examination, glucose-6-phosphate dehydrogenase deficiency was found to be the cause of MetHb after rasburicase exposure.

Diagnosis was made by either measuring arterial MetHb or CO oximeter. Treatment options involve transfusion and methylene blue, if glucose-6-phosphate dehydrogenase deficiency is not present.
Phosphatidylinositol 4,5-bisphosphate regulates cilium transition zone maturation in Drosophila melanogaster
Authors: Gupta Alind , Fabian Lacramioara , Brill Julie A.
Published: July 2018

Cilia are cellular antennae that are essential for human development and physiology. A large number of genetic disorders linked to cilium dysfunction are associated with proteins that localize to the ciliary transition zone (TZ), a structure at the base of cilia that regulates trafficking in and out of the cilium. Despite substantial effort to identify TZ proteins and their roles in cilium assembly and function, processes underlying maturation of TZs are not well understood. Here, we report a role for the membrane lipid phosphatidylinositol 4,5-bisphosphate (PIP2) in TZ maturation in the Drosophila melanogaster male germline. We show that reduction of cellular PIP2 levels through ectopic expression of a phosphoinositide phosphatase or mutation of the type I phosphatidylinositol phosphate kinase Skittles induces formation of longer than normal TZs. These hyperelongated TZs exhibit functional defects, including loss of plasma membrane tethering. We also report that the onion rings (onr) allele of Drosophila Exo84 decouples TZ hyperelongation from loss of cilium–plasma membrane tethering. Our results reveal a requirement for PIP2 in supporting ciliogenesis by promoting proper TZ maturation.
Estimation of the Brazilian Consumer Demand System
Authors: Asano Seki , Fiuza Eduardo P. S.
Published: July 2018

In this study we estimate the Brazilian consumer demand system through family expenditure data, which cover all consumption categories. The model is estimated from family-level expenditures on seven consumption categories, and a new set of regional cost-of-living indexes. The sources for expenditures are the national household expenditure surveys (POFs) conducted in 1987/88 and 1995/96, which collected data from eleven metropolitan areas. To the best of our knowledge this is the first study of this type and extent based on both waves of POF. Corresponding price indexes were constructed from detailed commodity prices, also from each metropolitan area. The salient features of our study are 1) price variations come from both time and regional differences, which allows us to estimate price elasticities with high precision, 2) we have large variations in income (total expenditures), which is rarely available in aggregate data, and 3) we control for time specific factors by exploiting the panel structure of the data set.
Overreaction of yield spreads and movements of Brazilian interest ratest
Authors: Brito Ricardo D. , Duarte Angelo José Mont' Alverne , Guillen Osmani Teixeira de Carvalho
Published: July 2018

This paper tests the rational expectations hypothesis (REH) for Brazil from July 1996 to December 2001. For any pair of maturities between one day and one year, it shows that the yield spread between a longer-term and a shorterterm interest rate is an imprecise predictor of the short-term movements in the longer-term interest rate and of the long-term movements in the shorter-term interest rate. Moreover, yield spreads highly correlated with the rational expectations forecasts of future changes in the shorter-term rate, but significantly more volatile than these, suggest the rejection of the REB. The alternative hypothesis of overreaction of the yield spread to the expectation of future changes in the shorter-term rate seems a reasonable explanation to these findings, and can be rationalized by a monetary policy of interest rate smoothing.
Relative deficit of health services in Brazilian states and regions
Authors: Gasparini Carlos Eduardo , Ramos Francisco S.
Published: July 2018

The paper analyzes the allocation of health services to Brazilian states and regions. A relative service deficit indicator is constructed to achieve that goal, using equity-based criteria, which means equality of access for equal need. The Data Envelopment Analysis (DEA) is used to estimate the best service availability frontier for equal need. The results show great differences in the availability of health services among Brazilian states and regions. In regional terms, the situation of the South is the best one, whereas the North experiences the worst deficit of health services. These disparities highlight the importance of deficit assessment as an instrument to guide public action, especially in the Brazilian context, where the coverage and availability of health services is a constitutional rule.
Political Economy of Intermunicipal Health Consortia Formation: Effects of Income and Preference Heterogeneity among Municipalities
Authors: Teixeira Luciana , Bugarin Mauricio , Dowell Maria Cristina Mac
Published: July 2018

This article presents models of electoral competition in municipalities in which candidates for mayor announce platforms consisting of the amount of health services to be provided and the corresponding tax schedules. Health services can be provided in an autarkic way or by means of a consortium of two municipalities. The paper studies the effects of income and preference heterogeneity among municipalities. Only when municipalities are totally homogeneous may one assert that the consortium brings about an increase in the provision of health services. Moreover, homogeneous consortia tend to be formed whereas heterogeneous municipalities tend to remain separated.
Optimal Portfolio and Consumption in a Switching Diffusion Market
Authors: Cajueiro Daniel Oliveira , Yoneyama Takashi
Published: July 2018

This paper addresses the problem of finding the optimal portfolio and consumption of a small agent in an economy. The novelty of this work is in considering that the financial market, in contrast to the celebrated Black-Scholes model, is composed of two sources of uncertainties: a Brownian motion and a continuous time Markov chain. While the Brownian motion intends to model the normal oscillations of the asset prices, the continuous time Markov chain aims at taking into account the abrupt variations that can occur in the parameters of the asset dynamics due to changes that take place in the state of the economy. The problem is formulated in terms of classical optimal stochastic control and the Hamilton-Jacobi-Bellman equation is solved to yield the solution.
Sensitivity Analysis in Computable General Equilibrium Models: An Application for the Regional Effects of the Free Trade Area of the Americas (FTAA)
Authors: Domingues Edson Paulo , Haddad Eduardo Amaral
Published: July 2018

The goal of this paper is to explore an applied tool for sensitivity analysis in computable general equilibrium models (CGE). An interregional CGE model is used to assess the impacts of the Free Trade Area of the Americas (FTAA) on Brazilian regions. As interregional substitution and factor mobility can be the key mechanisms that drive the model results, one should take closer attention to the estimated regional trade elasticities. Since information for proper estimation is rarely available, qualitative sensitivity analysis should be designed and used together with systematic quantitative sensitivity analysis. The sensitivity of results to parameters is evaluated in such a way that we can assess the robustness of results to different levels of elasticities of substitution
High pressure alpine metamorphism of the Pelagonian allochthon in the Kastania area (Southern Vermion), Greece
Authors: MPOSKOS E. , PERRAKI M.
Published: July 2018

The Pelagonian allochthon in the Kastania area (Southern Vermion) consists of pre-alpine and alpine rocks that underwent two episodes of Alpine HP/LT metamorphism. The first episode, of Lower Cretaceous age, is represented by the mineral assemblages: Quartz-albite-microcline-phengite±garnet-clinozoisite± biotite±rutiletitanite in orthogneisses and the Kastania metagranite and garnet-chloritoid-chlorite±kyanite-white K-micaparagonite- rutile in high alumina metapelites. Pressures, were estimated at TO kbar at 500 °C, applying the phengite geobarometry and more than 22 Kbar, calculating the reaction Grt+Rt+Qtz+W®Ttn-l-Czo, occurred in the Kastania metagranite during decompression. Recrystallization at albite-epidote-amphibolite facies conditions accompanied by penetrative deformation defines the dominant mineral assemblages and textures in orthogneisses, metapelites and metabasites. The second metamorphic episode of a probable Eocene age occurred under blueschist/greenschist facies conditions and produced fine-grained phengite, stilpnomelane, green biotite and blue amphibole in orthogneisses and amphibolites.
Petrology, geochemisty and isotopie characteristics of the shoshonitic plutonic rocks from Maronia area, West Thrace, Greece
Authors: PAPADOPOULOU L. , CHRISTOFIDES G. , BRÖCKER M. , KORONEOS Α. , SOLDATOS T. , ELEFTHERIADIS G.
Published: July 2018

The Maronia pluton, a high-K intrusion in the Circum Rhodope Belt, comprises gabbro to monzonite to granite having pyroxene, biotite and less olivine and amphibole. Three rock groups have been recognised: a basic, an intermediate and an acid. Major, trace and REE geochemistry as well as Sr and Ο isotopes support a genetic relation between the basic and the intermediate group but not between them and the acid group. An AFC process with a carbonate assimilant or an MFC process, where the basic end-member is represented by the less evolved samples, and the acid end-member by more evolved samples having Sr isotopes higher than those in the acid group, is suggested for the evolution of the basic-intermediate group. The basic-intermediate group originates from a lithospheric mantle while the acid group probably from a low-Sr isotopes crustal melt.
Major, trace element and Sr-isotope characterization of the Samothraki tertiary volcanic rocks, NE Aegean
Authors: VLAHOU M. , CHRISTOFIDES G. , ELEFTHERIADIS G. , PINARELLI L. , KASSOLI-FOURNARAKI A.
Published: July 2018

Tertiary volcanic rocks of the Samothraki Island were found to show a wide range of composition. Two series have been distinguished showing diverging trends both in major and in trace element diagrams. Sr-isotope data show even more pronounced grouping of the two series thus reinforcing the suggestion of diverse evolutionary processes. A possible origin from either an enriched mantle source for the old volcanic series and mantle plus crust for the young volcanic rock series is suggested. Fractional crystallization or any other closed system process cannot account for the geochemical and isotopie variations seen witin the rock series. More complex processes must be responsible for their evolution history.
Calculation of the physicochemical parameters ΣS, ΣC, aH2S, I and of the metal ions content of the hydrothermall fluid that has precipitated Au-Ag-Te ores in Panormos - Liardades Bay area, Tinos Island, Cyclades
Authors: ΤΟΜΠΡΟΣ ΣΤ. , ΣΕΫΜΟΥΡ Κ. ΣΤ.
Published: July 2018

The Guldberg - Waage chemical equilibration method was applied to calculate the ionic content of the hydrothermal fluid that has precipitated Ag-Au-Te ores with milky and clear quartz in a stockwork of veins at Panormos - Liardades Bay. The Au-Ag-Te mineralization is developed in nine (I to IX) successive stages with Base Metals Tellurides, Native precious metals and a supergene stage at the end. The metallic and non-metallic ions content of the hydrothermal fluid was calculated for temperatures between 300°C and 190°C. Reconstruction of the evolution of pHysicochemical conditions in the fluid within the same temperature interval yielded calculated values of ΣΟ= IO"1 to 10°, a=10'29 to 109 2 and 1= 0.4
Calculaton of the physicochemical parameters fS2, fQ2, fC02, fTe2, aS2, aQ2and pH in the hydrothermal fluid that has precipitated Au-Ag-Te ores in Panormos - Liardiades bay area, Tinos island, Cyclades
Authors: ΤΟΜΠΡΟΣ ΣΤ. , ΣΕΫΜΟΥΡ Κ. ΣΤ.
Published: July 2018

The evolution of the physicochemical parameters, between 300°C to 190° C, in the hydrothermal fluid that has precipitated epithermal Ag-Au-Te ores in Panormos - Liardades Bay, was studied using the Guldberg- Waage chemical equilibration method. The range of the calculated values of the physicochemical parameters for this temperature interval were: fS2 = 10"83 to 10155, fQ2 = 10'321 to IO"42, fTe2 = 10673 to 10195, fCQ2 = 10+08 to 10" 02, a„ = 1 0 " t o 10139, an, = 10"41 to 10"321, aT , = 10"65 and 4.95 - 6.9
Mali I, Lopes - 10 Korriku - Theken - Terno ve chromite deposits and their potential
Authors: GJONI V.
Published: July 2018

Mali Lopes-10 Korriku-Theken-Ternove chromite deposits are located in the Bulqiza ophiolite massif. According to the recent data, it is concluded that this area is a new very prospective target.
ISO 9000 quality assurance certification in the mining sector of Greece
Authors: KITSOPOULOS K. P. , SCOTT P. W. , JEFFREY C. A.
Published: July 2018

All over the world, businesses have started moving towards Quality Assurance and the adoption of ISO 9000 Standards. In this study, we examined the status of the Quality Assurance Certification of companies which operate in the mining sector in Greece. It is certain that the companies have started working towards Quality Management and Quality Assurance Certification. The movement towards Quality Assurance is customer driven. The specific motives for implementing Quality Assurance Certification were customer satisfaction, to gain a competitive advantage and improve business efficiency. They anticipate a better business image, to increase customer satisfaction and strengthen their market share. The level of criticism for some aspects of the ISO 9000 certification, which has been recorded in other parts of the world, was not found in Greece. Following the introduction of ISO 9000, some mining companies also included in their strategy the introduction of ISO 14000 which relates to Environmental Management Systems.
A new occurrence of argentopentlandite and gold from the Au-Ag-rich copper mineralisation in the Paliomylos area, Serbomacedonian massif, Central Macedonia, Greece
Authors: MELFOS V. , VAVELIDIS M. , ARIKAS K.
Published: July 2018

The Au-Ag-Cu mineralisation in the Paliomylos area is associated with quartz segregations and pegmatoids in the form of boudinaged bodies. The Au, Ag and Cu contents in the ore bodies reach 6.8 ppm, 765 ppm and 0.80 wt%. The ore minerals consist of pyrite, chalcopyrite, sphalerite, pyrrhotite, galena, bismuthinite, argentopentlandite, gersdorffite, cobaltite, aikinite, hessite, native bismuth and gold. Pentlandite contains significant amounts in Ag (13.15 wt%), Au (1.59 wt%) and PGM, demonstrating a formula of Fe5.37 Ni2.56 Ag1.03 Ir0.03 S8.01. On the basis of geological, textural and chemical data, the mineralisation in the studied area was formed under high temperatures.
Origin and migration mechanism of the main hydrocarbon seeps in western Greece
Authors: ΝΙΚΟΛΑΟΥ Κ. Α.
Published: July 2018

In this presentation a description of the main hydrocarbon indications of Western Greece is given, in relation to their origin and migration mechanism. Five groups of oil have been defined (Palacas et al.1986, Ν. Rigakis 1999) and their appearance on surface or in wells is explained. Doger shales are the source rocks of the first group of oil seeps in the central Ionian zone in Epirus (Botsara). Migration takes place through inverse or thrust faults. The second group is located at Trifos of Etoloakarnania, and Kyllini and West Katakolon well of NW Peloponissos. It is originated from Lower Cretaceous source rocks and migration happens through active diapiric movements of the Triassic evaporites. Triassic evaporites play important role in the maturation and migration and possible entrapment of this group of oil. The third group has genetic and migration relation with Triassic evaporites and their movements and is found at Delvinaki of Epirus and in the Well South Katakolon, offshore West Peloponissos. The fourth group that appears at Keri and Alikes of Zakynthos Island, it is possible to be originated from Middle- Upper Miocene post-tectonic sediments. The unconformity between Alpine and Post-Alpine sediments and some normal faults, is the possible pathway of migration mechanism. In the same team another oil show at Marathopolis, near Filiatra, is included with some doubts about its real origin. The fifth group is found at Paxos Island in the Preapulian zone. The oil is generated mainly from Middle-Upper Jurassic sediments, while older sediments of Lower Jurassic and Triassic are not excluded as possible source of the oil seeps. It is important to note that the contribution of the ground water movements is important in migration mechanism in some of the described cases. Finally, we strongly believe that the geological sections that are included in the text explain better our results and thoughts.
Aspects of thermal behavior of Amynteo lignites, Northern Greece, determined by thermogravimetry
Authors: IORDANIDIS A. , GEORGAKOPOULOS A.
Published: July 2018

In this study, the burning profiles of seven lignite samples from Amynteo lignite mine, Northern Greece, were obtained using a thermogravimetry technique. The differentiation in the thermal behavior of the samples was investigated using DTG curves. The influence of inorganic constituents (expressed as major oxides content) was evaluated by correlate the major oxides content with burnout time and maximum weight loss rate. Samples from the intermediate lignite beds show a differentiation in their thermal behavior, related to the low sulfur and inorganic constituents content and attributable to their decreased thermal stability. There is a critical value of burnout time when correlate the sum of major oxides with burnout time. The inorganic content has a diverse relationship with burnout time beyond this critical value.
Risk management of energy service companies
Authors: Гуськова Надежда , Gus'kova Nadezhda , Ульянкин Олег , Ul'yankin Oleg
Published: July 2018

In the monograph theoretical are generalized ideas of activities and essence risk managements of power service companies. Are analyzed implementations performance contracts (power service agreements). Besides, the analysis of a current status is carried out and the prospects of market development are determined power services of Russia and also it is researched domestic applications of insurance in a context risk managements of power service companies. In the course of the research strategic directions are revealed development power service risk management system is offered power service companies. In the monograph theoretical are generalized ideas of activities and essence risk managements of power service companies. Are analyzed implementations performance contracts (power service agreements). Besides,
the analysis of a current status is carried out and the prospects of market development are determined power services of Russia and also it is researched domestic applications of insurance in a context risk managements of power service companies. In the course of the research strategic directions are revealed development power service risk management system is offered power service companies
Quantitative Convergence Analysis of Iterated Expansive, Set-Valued Mappings
Authors: Russell Luke D. , Thao Nguyen H. , Tam Matthew K.
Published: July 2018

We develop a framework for quantitative convergence analysis of Picard iterations of expansive set-valued fixed point mappings. There are two key components of the analysis. The first is a natural generalization of single-valued averaged mappings to expansive set-valued mappings that characterizes a type of strong calmness of the fixed point mapping. The second component to this analysis is an extension of the well-established notion of metric subregularity—or inverse calmness—of the mapping at fixed points. Convergence of expansive fixed point iterations is proved using these two properties, and quantitative estimates are a natural by-product of the framework. To demonstrate the application of the theory, we prove, for the first time, a number of results showing local linear convergence of nonconvex cyclic projections for inconsistent (and consistent) feasibility problems, local linear convergence of the forward-backward algorithm for structured optimization without convexity, strong or otherwise, and local linear convergence of the Douglas-Rachford algorithm for structured nonconvex minimization. This theory includes earlier approaches for known results, convex and nonconvex, as special cases.
The Relationship Between Student–Parent Communication and First-Year Academic Performance
Authors: Weintraub Dayna S. , Sax Linda J.
Published: July 2018

During a time of increasing parental engagement in the lives of college-going students, we examined how first-year students' perceived interaction with their parents predicted their academic performance. Data were collected from college students living in residential housing at a diverse and selective public research university in the western United States at two points in time (N = 995). Results revealed the value of quality over quantity of communication on students' academic performance. Notably, students interacted differently with their mothers and fathers, suggesting that when designing programs, administrators should recognize the different ways mothers and fathers contribute to academic performance.
Leaders' Perceptions of the Professionalization of Academic Advising: A Phenomenography
Authors: McGill Craig M.
Published: July 2018

Through the professionalization process, an occupation transforms into a profession. Although much scholarship has situated academic advising as a professional endeavor, in the past few years, the authors of two papers posited that advising is not a profession, a contention not shared by all within the advising community. Despite much scholarly deliberation, advising and the role of it in higher education remains misunderstood by administrators, faculty members, staff, students, and some advisors themselves. Therefore, discussions of professionalizing the field remain both inevitable and imperative. To advance the dialogue, a phenomenography was used to explore the variety of perspectives that NACADA leaders shared about the professionalization of academic advising. Five attitudinal categories emerged: assumptive, presumptive, emerging profession, inferiority complex, and the need for further definition.
‘you’ve told me that three times now’: Propaganda/anti-propaganda in the Films Division India documentary, 1965–75
Authors: Kishore Avijit Mukul
Published: July 2018

In the period from 1965 to 1975, some unprecedented and original experiments with the non-fiction film were conducted within Films Division India (FD), the Indian government’s documentary production organisation. The films of this period are important because they mark the first expression of dissent and resistance to statist agendas of propaganda, as well as to prescriptive ways of making documentary films. This article examines the work of a select group of FD film-makers and their engagement with politics and film form, under the leadership of FD’s then Director, Jehangir Bhownagary. This decade has often been referred to as the ‘golden age’ and the ‘experimental film’ phase of FD, framing the popular understanding of the FD documentary through the binary of ‘nation-building/propaganda films’ or ‘experimentation’. This article analyses the films of this period – from the perspective of a documentary film-maker and curator, with a long-standing engagement with the FD archive – to foreground the critique embedded within experiments with film form, as well as the status quo-ist and regressive nature of some of the highly abstract and unconventional films made in this period. By doing so, the article attempts to pry loose the rigid classifications that have now congealed debates about the FD films, and to offer a more nuanced reading of this material.
The frame as borderland: Secular gazes and believing bodies in Bani Abidi’s The Distance From Here (2010)
Authors: Madani Adnan
Published: July 2018

Is it still possible to think of some contemporary art as belonging to a religious or a secular world, where ‘world’ is understood in Wittgenstein’s sense as all that is the case? What purchase can these powerful concepts have on today’s art, especially in the realm of video and photography with their peculiar relations to reality and subjectivity? Echoing Talal Asad’s question ‘[i]s there a secular body?’, I ask whether there is a ‘secular’ or ‘religious’ gaze that belongs to this body, how it describes its own boundaries and what lies outside it. Looking at Pakistani art allows me to investigate the longer duration of culture from which some recent video practices have emerged and found a place in globalised art circuits. I claim that Bani Abidi’s video art, and specifically The Distance From Here (2010) can be seen as a sustained exploration of heterogeneous temporalities and subjective positions that are as yet not entirely taken up by their international presentation, audience and circulation, and derive from a space that is not understandable as simply divided between the secular and the religious. This remainder or intractability might indicate the possibility of encounters with forms of life that unsettle existing conceptual divisions between the secular and the religious or the local and the global. Seeing Abidi’s work in relation to a powerful tradition of allegory and of narrative deriving from the philosophy of Ibn Sina, I argue that these currents persist in popular culture and in local literary or artistic forms, even when they are not explicitly referred to. This allows me to make a case for seeing Abidi’s work in a context that is not restricted to the history of (Euro-American) art and its philosophies.
Iniciativas de mercadeo ambiental y digital signage en las ferias comerciales como aporte al desarrollo sostenible
Authors: Vallejo Vélez Juan Camilo
Published: July 2018

En cada feria comercial se suelen utilizar grandes cantidades de elementos publicitarios con dos propósitos: 1) promocionar la ocurrencia del evento y 2) obtener información de los visitantes que incentive eventuales compras. Usualmente, dichos elementos terminan siendo descartados sin lograr su objetivo, y su fabricación, a partir de materiales altamente contaminantes, crean cuestionamientos sobre el papel de expositores y ferias frente a la responsabilidad ambiental. Por su parte, los visitantes, familiarizados con el uso de la tecnología, muestran una mayor propensión a consumir contenidos digitales en lugar de impresos. Siendo una tendencia evidente, los encargados de la promoción del evento deben revisar e integrar acciones de digital signage e ISO 20121, reemplazando el uso de elementos físicos, para generar efectividad. El presente artículo es una revisión en diversas fuentes que propone una gestión responsable de eventos comerciales que, desde lo ambiental, contribuya a los Objetivos del Desarrollo Sostenible.
Análise do Desenvolvimento dos Ambientes de Inovação: O Caso da Governança em Parques Tecnológicos e Incubadoras de Santa Maria/RS
Authors: Klein Leander Luiz , Ravanello Felipe Da Silva , Diniz Pereira Breno Augusto
Published: July 2018

O objetivo da pesquisa foi identificar as principais características e desenvolvimentoda governança dos ambientes de inovação no município de Santa Maria. A base teórica para o desenvolvimento do artigo consistiu nomodelo de governança proposto por Provan e Kenis (2008) da Organização Administrativa da Rede (OAR). Para a coleta de dados utilizou-se entrevistas em profundidade, além de dados secundários que foram analisados através da técnica de análise de conteúdo. Como resultados, verificou-se que ambientes de inovação maduros possuem uma governança semelhante a OAR, porém indica-se aprofundar os estudos com outros agentes desses ambientes. Quanto aos ambientes de inovação embrionários e em crescimento/ desenvolvimento ainda necessitam de uma maior estruturação internade seus ambientes e trabalhar questões principalmente no que se refere aconfiança, integração e comprometimento em rede.
Automatic Diachronic Normalization of Polish Texts
Authors: Jassem Krzysztof , Graliński Filip , Obrębski Tomasz , Wierzchoń Piotr
Published: July 2018

The paper presents a method for the automatic diachronic normalization of Polish texts – the procedure, which, for a given historical text, returns its contemporary spelling. The method applies finite-state transducers, defined in a sublanguage of the Thrax formalism. The paper discusses linguistic issues, such as evolution in spelling of the Polish language, as well as implementation aspects, such as efficiency or testing the proposed method.
Maximum co-located community search in large scale social networks
Authors: Chen Lu , Liu Chengfei , Zhou Rui , Li Jianxin , Yang Xiaochun , Wang Bin
Published: July 2018

The problem of k-truss search has been well defined and investigated to find the highly correlated user groups in social networks. But there is no previous study to consider the constraint of users' spatial information in k-truss search, denoted as
co-located community search
in this paper. The co-located community can serve many real applications. To search the maximum co-located communities efficiently, we first develop an efficient exact algorithm with several pruning techniques. After that, we further develop an approximation algorithm with adjustable accuracy guarantees and explore more effective pruning rules, which can reduce the computational cost significantly. To accelerate the real-time efficiency, we also devise a novel quadtree based index to support the efficient retrieval of users in a region and optimise the search regions with regards to the given query region. Finally, we verify the performance of our proposed algorithms and index using five real datasets.
Data synthesis based on generative adversarial networks
Authors: Park Noseong , Mohammadi Mahmoud , Gorde Kshitij , Jajodia Sushil , Park Hongkyu , Kim Youngmin
Published: July 2018

Privacy is an important concern for our society where sharing data with partners or releasing data to the public is a frequent occurrence. Some of the techniques that are being used to achieve privacy are to remove identifiers, alter quasi-identifiers, and perturb values. Unfortunately, these approaches suffer from two limitations. First, it has been shown that private information can still be leaked if attackers possess some background knowledge or other information sources. Second, they do not take into account the adverse impact these methods will have on the utility of the released data. In this paper, we propose a method that meets both requirements. Our method, called
table-GAN
, uses generative adversarial networks (GANs) to synthesize fake tables that are statistically similar to the original table yet do not incur information leakage. We show that the machine learning models trained using our synthetic tables exhibit performance that is similar to that of models trained using the original table for unknown testing cases. We call this property
model compatibility
. We believe that anonymization/perturbation/synthesis methods without model compatibility are of little value. We used four real-world datasets from four different domains for our experiments and conducted indepth comparisons with state-of-the-art anonymization, perturbation, and generation techniques. Throughout our experiments, only our method consistently shows balance between privacy level and model compatibility.
Efficient estimation of inclusion coefficient using hyperloglog sketches
Authors: Nazi Azade , Ding Bolin , Narasayya Vivek , Chaudhuri Surajit
Published: July 2018

Efficiently estimating the
inclusion coefficient
- the fraction of values of one column that are contained in another column - is useful for tasks such as data profiling and foreign-key detection. We present a new estimator, BML, for inclusion coefficient based on Hyperloglog sketches that results in significantly lower error compared to the state-of-the art approach that uses Bottom-k sketches. We evaluate the error of the BML estimator using experiments on industry benchmarks such as TPC-H and TPC-DS, and several real-world databases. As an independent contribution, we show how Hyperloglog sketches can be maintained incrementally with data deletions using only a constant amount of additional memory.
Sundial
Authors: Yu Xiangyao , Xia Yu , Pavlo Andrew , Sanchez Daniel , Rudolph Larry , Devadas Srinivas
Published: July 2018

Distributed transactions suffer from poor performance due to two major limiting factors. First, distributed transactions suffer from high latency because each of their accesses to remote data incurs a long network delay. Second, this high latency increases the likelihood of contention among distributed transactions, leading to high abort rates and low performance.

We present
Sundial
, an in-memory distributed optimistic concurrency control protocol that addresses these two limitations. First, to reduce the transaction abort rate, Sundial dynamically determines the logical order among transactions at runtime, based on their data access patterns. Sundial achieves this by applying
logical leases
to each data element, which allows the database to dynamically calculate a transaction's logical commit timestamp. Second, to reduce the overhead of remote data accesses, Sundial allows the database to cache remote data in a server's local main memory and maintains cache coherence. With logical leases, Sundial integrates concurrency control and cache coherence into a simple unified protocol. We evaluate Sundial against state-of-the-art distributed concurrency control protocols. Sundial outperforms the next-best protocol by up to 57% under high contention. Sundial's caching scheme improves performance by up to 4.6× in workloads with high access skew.
Chi
Authors: Mai Luo , Zeng Kai , Potharaju Rahul , Xu Le , Suh Steve , Venkataraman Shivaram , Costa Paolo , Kim Terry , Muthukrishnan Saravanan , Kuppa Vamsi , Dhulipalla Sudheer , Rao Sriram
Published: July 2018

Stream-processing workloads and modern shared cluster environments exhibit high variability and unpredictability. Combined with the large parameter space and the diverse set of user SLOs, this makes modern streaming systems very challenging to statically configure and tune. To address these issues, in this paper we investigate a novel control-plane design, Chi, which supports continuous monitoring and feedback, and enables dynamic re-configuration. Chi leverages the key insight of embedding control-plane messages in the data-plane channels to achieve a low-latency and flexible control plane for stream-processing systems.

Chi introduces a new reactive programming model and design mechanisms to asynchronously execute control policies, thus avoiding global synchronization. We show how this allows us to easily implement a wide spectrum of control policies targeting different use cases observed in production. Large-scale experiments using production workloads from a popular cloud provider demonstrate the flexibility and efficiency of our approach.
Frontier
Authors: O'Keeffe Dan , Salonidis Theodoros , Pietzuch Peter
Published: July 2018

In an
edge
deployment model, Internet-of-Things (IoT) applications, e.g. for building automation or video surveillance, must process data
locally
on IoT devices without relying on permanent connectivity to a cloud backend. The ability to harness the combined resources of multiple IoT devices for computation is influenced by the quality of wireless network connectivity. An open challenge is how practical edge-based IoT applications can be realised that are robust to changes in network bandwidth between IoT devices, due to interference and intermittent connectivity.

We present
Frontier
, a distributed and resilient edge processing platform for IoT devices. The key idea is to express data-intensive IoT applications as continuous data-parallel streaming queries and to improve query throughput in an unreliable wireless network by exploiting
network path diversity
: a query includes
operator replicas
at different IoT nodes, which increases possible network paths for data. Frontier dynamically routes stream data to operator replicas based on network path conditions. Nodes probe path throughput and use
backpressure stream routing
to decide on transmission rates, while exploiting multiple operator replicas for data-parallelism. If a node loses network connectivity, a
transient disconnection recovery
mechanism reprocesses the lost data. Our experimental evaluation of Frontier shows that network path diversity improves throughput by 1.3×−2.8×for different IoT applications, while being resilient to intermittent network connectivity.
A uterus didelphys with a spontaneous labor at term of pregnancy: a rare case and a review of the literature
Authors: Algeri Paola , Rota Sonia M. , Nicoli Elena , Caruso Orlando , Spinetti Giovanna , Stagnati Valentina
Published: July 2018

Uterus didelphys accounts for 13% of uterine anomalies and has been correlated with preterm delivery and fetal malpresentation at delivery. A 37-year-old pregnant woman reported a spontaneous pregnancy in the right horn of a uterus didelphys. The course of the pregnancy was complicated by gestational diabetes, but no miscarriage threat or preterm delivery threat was reported during this pregnancy. She arrived at our division, in labor, at 39.2 gestational weeks’. She delivered by cesarean section due to failure to progress at 5 cm. Her post-operative course was uneventful. Vaginal delivery could be a safe option and the induction of labor or the use of oxytocin could be helpful in such cases, but recommended doses and labor time should be evaluated, so cesarean section is to date the most frequent delivery route in uterus didelphys at term.
Analyzing the Link Between Agency Problems, Governance and Control Attributes for Pakistan
Authors: Ghazali Ahmad , Bilal Ahmad Raza
Published: July 2018

This research attempts to analyze the relationship between agency, control and corporate governance attributes for a sample of 267 firms listed on the Pakistan Stock Exchange (PSX) from 2005 to 2008. The results show that a) Pakistani listed firms are facing high agency costs problems in contrast to established markets. b) Factors are observed important to having strong effect on mitigating agency costs levels: corporate dividend policy, degree of board independence, and institutional ownership. c) Corporate governance factors reduce discretionary expenditure ratio, increase assets utilization ratio and free cash flow ratio. d) Control variables increases the asset utilization ratio and decreases the free cash flow and increases the managers’ performance (Tobin’s Q ratio). e) Ownership attributes regulate free cash flow and decrease the discretionary expenditure ratio. The outcomes of this research lead to the proposed use of recommended governance, control and ownership attributes to overcome agency problems and a sound policy for better corporate governance (better management of agency cost issues) for listed firms.
Geotourism starts with accessible information: the Internet as a promotional tool for the georesources of Lower Silesia
Authors: Widawski Krzysztof , Rozenkiewicz Agnieszka , Łach Janusz , Krzemińska Alicja , Oleśniewicz Piotr
Published: July 2018

This paper investigates the state of information on geoheritage or, in a wider perspective, a geotourist offer that can be found on the Internet, the basic source of information for the potential tourist, at the example of Lower Silesia. In order to achieve the intended aim, firstly a discussion concerning the division of the tourist resources in the literature was presented. It served as the starting point for the selection and analysis of particular resources, and their online promotion techniques. A place of the geotourist resources within this group was highlighted. Next, the analysis of official documents that constitute the basis for actions aimed at the promotion of tourist resources, with the geotourist ones in particular, was carried out. Predominantly, they comprised the strategies of tourism development at different levels, i.e. the level of voivodeship, and the selected counties, where crucial georesources, or geoheritage complexes of the region are located. One of the most important examples is the Kłodzko County, officially referred to in its strategy as “the Tourist County.” The authors also indicated the nature-based tourist resources of Lower Silesia, placing special emphasis on the resources presented in the Geotourist Catalogues - the most comprehensive presentations of this kind of resources in Poland. In the following part, another analysis was presented regarding information on natural resources promoted on the websites of public administration, or local authorities. Selected websites were examined for their accessibility and the manner in which the georesources are presented. The main result of the conducted research is highlighting the fact that geotourism as a distinctive tourism category is not sufficiently promoted online. The reason behind it is the dispersion of geotourist resources being categorised under divergent umbrella terms. A set of actions for the implementation of changes that can possibly improve the present situation was suggested.