bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparison of Pixel- and Object-Based Classification Methods of Unmanned Aerial Vehicle Data Applied to Coastal Dune Vegetation Communities: Casal Borsetti Case Study
Authors: De Giglio Michaela , Greggio Nicolas , Goffo Floriano , Merloni Nicola , Dubbini Marco , Barbarella Maurizio
Published: June 2019

Coastal dunes provide the hinterland with natural protection from marine dynamics. The specialized plant species that constitute dune vegetation communities are descriptive of the dune evolution status, which in turn reveals the ongoing coastal dynamics. The aims of this paper were to demonstrate the applicability of a low-cost unmanned aerial system for the classification of dune vegetation, in order to determine the level of detail achievable for the identification of vegetation communities and define the best-performing classification method for the dune environment according to pixel-based and object-based approaches. These goals were pursued by studying the north-Adriatic coastal dunes of Casal Borsetti (Ravenna, Italy). Four classification algorithms were applied to three-band orthoimages (red, green, and near-infrared). All classification maps were validated through ground truthing, and comparisons were performed for the three statistical methods, based on the k coefficient and on correctly and incorrectly classified pixel proportions of two maps. All classifications recognized the five vegetation classes considered, and high spatial resolution maps were produced (0.15 m). For both pixel-based and object-based methods, the support vector machine algorithm demonstrated a better accuracy for class recognition. The comparison revealed that an object approach is the better technique, although the required level of detail determines the final decision.
Gravity Field Model Determination Based on GOCE Satellite Point-Wise Accelerations Estimated from Onboard Carrier Phase Observations
Authors: Wu Tangting , Li Jiancheng , Xu Xinyu , Wei Hui , Kuang Kaifa , Zhao Yongqi
Published: June 2019

GPS-based, satellite-to-satellite tracking observations have been extensively used to elaborate the long-scale features of the Earth’s gravity field from dedicated satellite gravity missions. We proposed compiling a satellite gravity field model from Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) satellite accelerations directly estimated from the onboard GPS data using the point-wise acceleration approach, known as the carrier phase differentiation method. First, we composed the phase accelerations from the onboard carrier phase observations based on the sixth-order seven-point differentiator, which can eliminate the carrier phase ambiguity for Low Earth Orbiter (LEO). Next, the three-dimensional (3D) accelerations of the GOCE satellite were estimated from the derived phase accelerations as well as GPS satellite ephemeris and precise clock products. Finally, a global gravity field model up to the degree and order (d/o) 130 was compiled from the 71 days and nearly 2.5 years of 3D satellite accelerations. We also recovered three gravity field models up to d/o 130 from the accelerations derived by differentiating the kinematic orbits of European Space Agency (ESA), Graz, and School of Geodesy and Geomatics (SGG), which was the orbit differentiation method. We analyzed the accuracies of the derived accelerations and the recovered gravity field models based on the carrier phase differentiation method and orbit differentiation method in time, frequency, and spatial domain. The results showed that the carrier phase derived acceleration observations had better accuracy than those derived from kinematic orbits. The accuracy of the recovered gravity field model based on the carrier phase differentiation method using 2.5 years observations was higher than that of the orbit differentiation solutions for degrees greater than 70, and worse than Graz-orbit solution for degrees less than 70. The cumulative geoid height errors of carrier phase, ESA-orbit, and Graz-orbit solutions up to degree and order 130 were 17.70cm, 21.43 cm, and 22.11 cm, respectively.
Generating Red-Edge Images at 3 M Spatial Resolution by Fusing Sentinel-2 and Planet Satellite Products
Authors: Li Wei , Jiang Jiale , Guo Tai , Zhou Meng , Tang Yining , Wang Ying , Zhang Yu , Cheng Tao , Zhu Yan , Cao Weixing , Yao Xia
Published: June 2019

High-resolution satellite images can be used to some extent to mitigate the mixed-pixel problem caused by the lack of intensive production, farmland fragmentation, and the uneven growth of field crops in developing countries. Specifically, red-edge (RE) satellite images can be used in this context to reduce the influence of soil background at early stages as well as saturation due to crop leaf area index (LAI) at later stages. However, the availability of high-resolution RE satellite image products for research and application globally remains limited. This study uses the weight-and-unmixing algorithm as well as the SUPer-REsolution for multi-spectral Multi-resolution Estimation (Wu-SupReME) approach to combine the advantages of Sentinel-2 spectral and Planet spatial resolution and generate a high-resolution RE product. The resultant fused image is highly correlated (R2 > 0.98) with Sentinel-2 image and clearly illustrates the persistent advantages of such products. This fused image was significantly more accurate than the originals when used to predict heterogeneous wheat LAI and therefore clearly illustrated the persistence of Sentinel-2 spectral and Planet spatial advantage, which indirectly proved that the fusion methodology of generating high-resolution red-edge products from Planet and Sentinel-2 images is possible. This study provided method reference for multi-source data fusion and image product for accurate parameter inversion in quantitative remote sensing of vegetation.
Investigating the Feasibility of Multi-Scan Terrestrial Laser Scanning to Characterize Tree Communities in Southern Boreal Forests
Authors: Yrttimaa Tuomas , Saarinen Ninni , Kankare Ville , Liang Xinlian , Hyyppä Juha , Holopainen Markus , Vastaranta Mikko
Published: June 2019

Terrestrial laser scanning (TLS) has proven to accurately represent individual trees, while the use of TLS for plot-level forest characterization has been studied less. We used 91 sample plots to assess the feasibility of TLS in estimating plot-level forest inventory attributes, namely the stem number (N), basal area (G), and volume (V) as well as the basal area weighed mean diameter (Dg) and height (Hg). The effect of the sample plot size was investigated by using different-sized sample plots with a fixed scan set-up to also observe possible differences in the quality of point clouds. The Gini coefficient was used to measure the variation in tree size distribution at the plot-level to investigate the relationship between stand heterogeneity and the performance of the TLS-based method. Higher performances in tree detection and forest attribute estimation were recorded for sample plots with a low degree of tree size variation. The TLS-based approach captured 95% of the variation in Hg and V, 85% of the variation in Dg and G, and 67% of the variation in N. By increasing the sample plot size, the tree detection rate was decreased, and the accuracy of the estimates, especially G and N, decreased. This study emphasizes the feasibility of TLS-based approaches in plot-level forest inventories in varying southern boreal forest conditions.
Light Fields for Face Analysis
Authors: Galdi Chiara , Chiesa Valeria , Busch Christoph , Lobato Correia Paulo , Dugelay Jean-Luc , Guillemot Christine
Published: June 2019

The term “plenoptic” comes from the Latin words plenus (“full”) + optic. The plenoptic function is the 7-dimensional function representing the intensity of the light observed from every position and direction in 3-dimensional space. Thanks to the plenoptic function it is thus possible to define the direction of every ray in the light-field vector function. Imaging systems are rapidly evolving with the emergence of light-field-capturing devices. Consequently, existing image-processing techniques need to be revisited to match the richer information provided. This article explores the use of light fields for face analysis. This field of research is very recent but already includes several works reporting promising results. Such works deal with the main steps of face analysis and include but are not limited to: face recognition; face presentation attack detection; facial soft-biometrics classification; and facial landmark detection. This article aims to review the state of the art on light fields for face analysis, identifying future challenges and possible applications.
OCA-MAC: A Cooperative TDMA-Based MAC Protocol for Vehicular Ad Hoc Networks
Authors: Liu Yao , Zhou Hongjing , Huang Jiawei
Published: June 2019

Cooperative communication is an effective method of improving the transmission performance for vehicular ad hoc networks. However, the rapid movement of vehicles leads to frequent changes in network topology and reduces the probability of successful data transmission on the medium access control (MAC) layer. In this paper, we propose an Optimal Cooperative Ad hoc MAC protocol (OCA-MAC) based on time division multiple access (TDMA). OCA-MAC utilizes multiple cooperative nodes to forward data, so as to improve the probability of successful data transmission. It chooses cooperative nodes according to direct successful transmission probability, communication range between potential helper node and destination node, and available time slot. Meanwhile, in order to avoid excessive transmission redundancy caused by multiple cooperative forwarding, the optimal number of cooperative forwarding nodes is obtained through analysis of a probabilistic model. Simulation results show that OCA-MAC improves the successful data transmission rate and reduces the number of transmission times and transmission delay compared to the multichannel TDMA MAC protocol (VeMAC) and the cooperative ad hoc MAC protocol (CAH-MAC).
“Drink It or Not”: Soft Drink Anticonsumption Behavior and the Mediating Effect of Behavioral Intentions
Authors: Shahzad Muhammad Faisal , Tian Yuhang , Xiao Jin
Published: June 2019

Increased health risks and obesity resulting from soft drink consumption have received considerable attention worldwide. The purpose of this empirical study was to explore the antecedents of soft drink anticonsumption behavior in China using structural equation modeling techniques by analysis of moment structures (AMOS). Soft drink anticonsumers think that these drinks are unhealthy, and consumer attitude and behavioral intention towards anticonsumption behavior were found to be significant. Individual and sociocultural factors were also positively associated with anticonsumption of soft drinks in China. Future studies could examine gender differences in anticonsumption behavior. A large sample size would be more reflective in other contexts. Regarding health and obesity-reduction concerns, this study provides useful implications for marketers and policymakers. Soft drink marketers can integrate obesity-reduction efforts through social marketing. This study has put forward a conceptual framework for soft drink anticonsumption behavior focusing on health concerns and the effect of sociocultural factors on anticonsumption.
Can Accessing the Internet while Travelling Encourage Commuters to Use Public Transport Regardless of Their Attitude?
Authors: Hong Jinhyun , McArthur David Philip , Livingston Mark
Published: June 2019

Due to advances in technology (in particular the Internet), people have become less restricted by space and time, and can use travel time more productively by using their Internet-connected mobile devices on the move. Some operators provided Internet access on public transport to increase ridership. This has been shown to increase ridership, however it is not clear if it can induce people who prefer private cars to public transport to consider using public transport. In this paper, we examine the relationship between the frequency of using the Internet while commuting or travelling, and commuting mode choice, and how this relationship varies for people who have different attitudes toward public transport. Our results show that commuters who use the Internet frequently on the move tend to use public transport more. In addition, this association is significant for those who prefer private cars to public transport, showing the potential effectiveness of new technology in generating new riders.
The Third Wave of LCA as the “Decade of Consolidation”
Authors: Zimek Martina , Schober Andreas , Mair Claudia , Baumgartner Rupert J. , Stern Tobias , Füllsack Manfred
Published: June 2019

Several authors have pointed out the importance of systems thinking, and have considered both environmental and social aspects (holistic perspective) of sustainability assessment in the past. Sustainability assessment tools which integrate different aspects (e.g., environmental/social aspects) in order to identify negative impacts have already been developed. Common tools used to assess environmental, social, or economic impacts include the life cycle assessment (LCA), social life cycle assessment (S-LCA), life cycle costing (LCC) and life cycle sustainability assessment (LCSA) approaches. The goal of the present study was to investigate how and to what extent the three dimensions of sustainability (environmental, social, economic; holistic sustainability perspective) have been integrated into the field of LCA. A topic modeling method was applied to examine whether the emphasis placed on integrating environmental, social, and economic aspects in sustainability assessment has resulted in a more comprehensive application of the LCA approach. The results show that topics related to energy and infrastructure are currently prevailing, and that topics related to methods have been decreasing since 1997. A minor discussion of social aspects and a lack of discussion on economic aspects were identified in the present study. These results do not support the predicted “decade of life cycle sustainability assessment.” Consequently, a new period of LCA extension and application is predicted, namely, the third wave of LCA as the “decade of consolidation.” During this period, the LCA framework will be enhanced to reduce existing practical and methodological difficulties and integrate environmental and social aspects in a sustainability assessment to support global sustainable development.
Multiobjective Genetic Algorithm-Based Optimization of PID Controller Parameters for Fuel Cell Voltage and Fuel Utilization
Authors: Qin Yuxiao , Zhao Guodong , Hua Qingsong , Sun Li , Nag Soumyadeep
Published: June 2019

Nowadays, given the great deal of fossil fuel consumption and associated environmental pollution, solid oxide fuel cells (SOFCs) have shown their great merits in terms of high energy conversion efficiency and low emissions as a stationary power source. To ensure power quality and efficiency, both the output voltage and fuel utilization of an SOFC should be tightly controlled. However, these two control objectives usually conflict with each other, making the controller design of an SOFC quite challenging and sophisticated. To this end, a multi-objective genetic algorithm (MOGA) was employed to tune the proportional–integral–derivative (PID) controller parameters through the following steps: (1) Identifying the SOFC system through a least squares method; (2) designing the control based on a relative gain array (RGA) analysis; and (3) applying the MOGA to a simulation to search for a set of optimal solutions. By comparing the control performance of the Pareto solutions, satisfactory control parameters were determined. The simulation results demonstrated that the proposed method could reduce the impact of disturbances and regulate output voltage and fuel utilization simultaneously (with strong robustness).
Special Issue: Resilience and Sustainability of Civil Infrastructures under Extreme Loads
Authors: Lu Zheng , Zhou Ying , Yang Tony , Papalou Angeliki
Published: June 2019

The special issue entitled ‘‘Resilience and Sustainability of Civil Infrastructures under Extreme Loads’’ updates the state of the art and perspectives focused on cutting-edge approaches to enhance structures’ resilience and sustainability under extreme loading events, including theoretical investigation, numerical simulation, and experimental study, keeping an eye on the seismic performance of civil structures. Notably, some innovative energy dissipative devices and resilient structural forms, which are encompassed in this special issue, would provide valuable references for the engineering application of resilient and sustainable civil infrastructures in the near future.
Supply Voltage and Temperature Dependence of Single-Event Transient in 28-nm FDSOI MOSFETs
Authors: Xu Jingyan , Guo Yang , Song Ruiqiang , Liang Bin , Chi Yaqing
Published: June 2019

Based on three-dimensional (3D) technology computer aided design (TCAD) simulations, the supply voltage and temperature dependence of single-event transient (SET) pulse width in 28-nm fully-depleted silicon-on-insulator (FDSOI) metal-oxide-semiconductor field-effect transistors (MOSFETs) is investigated. FDSOI MOSFETs are symmetry devices with a superior control of the short channel effects (SCEs) and single-event effects (SEEs). Previous studies have suggested that the SET width is invariant when the temperature changes in FDSOI devices. Simulation results show that the SET pulse width increases as the supply voltage decreases. When the supply voltage is below 0.6 V, the SET pulse width increases sharply with the decrease of the supply voltage. The SET pulse width is not sensitive to temperature when the supply voltage is 1 V. However, when the supply voltage is 0.6 V or less, the SET pulse width exhibits an anti-temperature effect, and the anti-temperature effect is significantly enhanced as the supply voltage drops. Besides, the mechanism is analyzed from the aspects of saturation current and charge collection.
Hepatitis E Virus Infections among Patients with Acute Febrile Jaundice in Burkina Faso
Authors: Dimeglio Chloé , Kania Dramane , Mantono Judith Mbombi , Kagoné Thérèse , Zida Sylvie , Tassembedo Souleymane , Dicko Amadou , Tinto Bachirou , Yaro Seydou , Hien Hervé , Rouamba Jérémi , Bicaba Brice , Medah Isaïe , Meda Nicolas , Traoré Oumar , Tuaillon Edouard , Abravanel Florence , Izopet Jacques
Published: June 2019

Hepatitis E virus infection is a significant public health problem in many parts of the world including Africa. We tested serum samples from 900 patients in Burkina Faso presenting with febrile icterus. They all tested negative for yellow fever, but those from 23/900 (2.6%) patients contained markers of acute HEV infection (anti-HEV IgM and HEV RNA positive). Genotyping indicated that 14 of the strains were HEV genotype 2b. There was an overall HEV IgG seroprevalence of 18.2% (164/900). In a bivariate analysis, the factors linked to HEV exposure were climate and patient age. Older patients and those living in arid regions were more likely to have HEV infection. HEV genotype 2b circulating only in humans can be involved in some acute febrile icterus cases in Burkina Faso. Better access to safe water, sanitation, and improved personal hygiene should improve control of HEV infection in this country.
Effect of River Ecological Restoration on Biofilm Microbial Community Composition
Authors: Lin Qiaoyan , Sekar Raju , Marrs Rob , Zhang Yixin
Published: June 2019

Across the world, there have been increasing attempts to restore good ecological condition to degraded rivers through habitat restoration. Microbial communities developing as biofilms play an important role in river ecosystem functioning by driving organic matter decomposition and ecosystem respiration. However, little is known about the structure and function of microbial communities in riverine systems and how these change when habitat restoration is implemented. Here, we compared the biofilm bacterial community composition using 16S rRNA genes targeted high-throughput Illumina Miseq sequencing in three river types, degraded urban rivers, urban rivers undergoing habitat restoration and forested rivers (our reference conditions). We aimed to determine: (i) the biofilm bacterial community composition affected by habitat restoration (ii) the difference in bacterial diversity in restored rivers, and (iii) correlations between environmental variables and bacterial community composition. The results showed that both water quality and biofilm bacterial community structure were changed by habitat restoration. In rivers where habitat had been restored, there was an increase in dissolved oxygen, a reduction in organic pollutants, a reduction in bacterial diversity and a related developing pattern of microbial communities, which is moving towards that of the reference conditions (forested rivers). River habitat management stimulated the processing of organic pollutants through the variation in microbial community composition, however, a big difference in bacterial structure still existed between the restored rivers and the reference forest rivers. Thus, habitat restoration is an efficient way of modifying the biofilm microbial community composition for sustainable freshwater management. It will, however, take a much longer time for degraded rivers to attain a similar ecosystem quality as the “pristine” forest sites than the seven years of restoration studied here.
Dual microcatheter technique for the treatment of a ruptured wide neck basilar tip aneurysm
Authors: Filep Rares , Gherasim Dorin Nicolae , Popescu Septimiu , Tokes Botond , Marginean Lucian
Published: June 2019

Endovascular treatment is a safe and efficient therapy for intracranial aneurysms with lower complication and mortality rates compared to surgical clipping. Wide-neck aneurysms still represent a challenge to complete and safe aneurysm occlusion in spite of techniques such as stent-assisted or balloon-assisted coiling, developed in order to achieve better occlusion rates. These techniques themselves may lead to further complications, so alternative methods such as the dual microcatheter technique were developed. This technique assumes that, via two microcatheters inserted into an aneurysm, simultaneous deployment of two coils achieves a stable coil frame without the use of adjunctive devices. The aim of this paper is to present a successfully treated basilar tip wide-neck aneurysm treated with the dual microcatheter technique.Case report. A 46-year-old male patient with acute onset of severe headache presented in the emergency room with altered state of consciousness. Non-enhanced CT scan showed subarachnoid and intraventricular haemorrhage. CT angiography revealed a wide-neck basilar tip aneurysm. Digital subtraction angiography confirmed the presence of an aneurysm with a wide, 4.9 mm neck.Dual microcatheter technique was chosen as the first treatment option, while a hypercompliant balloon was kept as backup. Two microcatheters were placed inside de aneurysm and two coils were introduced in order to form a stable framing coil mass that served as a support for further coils deployed in an alternately manner through each microcatheter. No procedural complication occurred, and the patient’s evolution was uneventful with no neurological deficits at discharge.Conclusion. The dual microcatheter technique is a safe and effective therapeutic option for wide-neck ruptured or unruptured intracranial aneurysms. Periprocedural complication rates are similar to simple coiling or balloon-assisted coiling, but lower than for stent-assisted coiling.
Initial single centre experience with Barrel VRD stent in large neck aneurisms
Authors: Mihalea Cristian , Humulescu Felicia Otilia , Abdelkhalek Hazem , Pescariu Sorin , Popa Bogdan Valeriu , Ples Horia
Published: June 2019

Introduction. Despite the use of new techniques, such as Y-stenting, the waffle-cone technique and intrasaccular flow disrupters the treatment of wide-neck bifurcation aneurysms is still challenging, especially for those where adjacent branches are arising at the neck level. Moreover, the use of flow diverter stents in bifurcation aneurysms has been proposed by several teams, although the results remain controversial.This study is reflecting initial experience in our department with a relatively new device available on the market: Barrel VRD stent. The unique design feature of the device is the “belly-like” central part of the stent which protects the adjacent branches.Methods. We retrospectively reviewed all patients in whom stenting with braided or laser-cut stents had been performed in our center. Three patients were identified and analyzed. Technical success, complications, immediate angiographic outcomes, procedural data, are reported here.Results. One MCA bifurcation and two basilar tip large neck aneurysms with one branch arising from the neck level have been identified. Technical success was achieved in all procedures. Overall procedure-related morbidity and mortality was 0%. In the immediate post-treatment angiography, adequate occlusion (neck remnant or total occlusion) was observed in all patients. Short- and mild-term follow-up angiography showed adequate occlusion of the aneurysms.Conclusions. In this small case series, retrospective single-center analysis we showed that Barrel VRD - stent assisted coiling is a safe and feasible technique. Moreover, it offers an elegant and effective endovascular solution for large neck basilar tip aneurysms on which the neurosurgical clipping remains challenging.
Hydatid cyst of the quadrigeminal cistern
Authors: Abdelrazaq Saif Saood , Al Ramadan Abdullah H. , Dolachee Ali Adnan , AbdulAzeez Mohammed Maan , Abdulrazzaq Ali Saud , Rashid Amar Saeed , Hoz Samer S.
Published: June 2019

Intracranial hydatid cyst involves supratentorial area and mainly affecting the middle cerebral artery territory with the predilection of the partial lobe. It can be single - which is the most common - or multiple up to 35 cysts. They tend to be huge at the time of symptomatic presentation especially when they are presented as a solitary lesion with a slow growth rate around 1.5 cm/year, however, it is variable and it can be up to 10 cm/year. Surgical treatment is mandatory for all patients once the correct diagnosis is made, except for patients with multiple organ involvement in poor general conditions and deep-located cysts. The existence of hydatidosis in the cisternal spaces must not be neglected given the capacity of E. granulosus larvae to disseminate via the CSF. In this case report; two and half years’ male child presented with a history of 2 attacks of generalized seizure for the last 72 hours with the head circumference at the upper normal limit for his age. This paper presents the first case report demonstrating a primary single hydatid cyst located in the quadrigeminal cistern in a child. We concluded that in spite of the feasibility of the imaging and the high suspension of cerebral hydatid cyst, still, the reports show more locations which can be described as unusual although for a head to toe suspected distribution of hydatid disease is already understood. An eminent medical and surgical (if indicated) treatment of the primary cerebral hydatid cyst are always effective and recommended.
Secondary (Duret) brainstem haemorrhage may not always represent a fatal event
Authors: Hanko Martin , Kolarovszki Branislav , Varga Kristián , Opšenák René , Snopko Pavol , Hanzel Radoslav , Zeleňák Kamil
Published: June 2019

Background. Secondary brainstem haemorrhage (eponymously called Duret haemorrhage) is a well-known complication of transtentorial brain herniation or of rapid decompression of intracranial space. It is considered to be a consequence of arterial rupture, venous infarction or ischemia-reperfusion injury and it is regarded as a harbinger of an unfavourable outcome for the patient. Despite this, several case reports describing good outcome after Duret haemorrhage preceded by evacuation of an expansive traumatic intracranial mass lesion, an episode of intracranial hypotension or lumbar drainage have been published.Case description. We present four cases of patients with secondary brainstem haemorrhage linked to an episode of intracranial hypertension due to various reasons who were treated at our clinic. The first patient suffered a small brainstem haemorrhage that was described on his initial CT scan presumably as a result of massive intracranial expansion caused by an acute subdural haematoma and this Duret haemorrhage markedly expanded after the subdural haematoma was evacuated by means of a decompressive craniectomy. The next two patients developed Duret haemorrhage after the evacuation of intracranial haematomas. The fourth patient presented with posttraumatic cerebral oedema complicated by a subtle Duret haemorrhage displayed on his initial CT scan and this bleeding remained stable even after a bilateral decompressive craniectomy. One patient passed away, one remained in a persistent coma and two survived with a light neurological deficit.Conclusions. However ominous a newly discovered Duret haemorrhage may be, it alone should not discourage us from the further intensive treatment of our patients as their outcome may considerably vary. The extent of this bleeding, type and severity of underlying brain injury and complete clinical status and history of our patients should all be taken into account when deciding about patients’ prognosis.
Diversidades epistemológicas: sobre a circulação do conhecimento na Teoria da Comunicação
Authors: Salgueiro Marques Angela Cristina , Sá Martino Luis Mauro
Published: June 2019

Este texto discute e amplia as proposições de Silva (2017) acerca da posição dos estudos sobre América Latina na Teoria da Comunicação. Baseado em pesquisa quantitativa, o autor indica a pouca presença dessa temática nas principais revistas acadêmicas brasileiras. Ampliando esse argumento, este texto discute questões metodológicas responsáveis por compor um quadro de ausência de diversidade na Teoria da Comunicação. O texto se desenvolve em três partes: (a) a chamada “Teoria da Comunicação” é, de fato, um grupo de propostas criados por poucos pesquisadores, em espaços e tempos específicos; (b) É necessário, no entanto, tomar cuidado com associações mecanicistas dessa proposição; (c) a ausência de diversidade deve ser pensada a partir das contradições na produção sobre Comunicação, tanto quanto suas condições sociais e econômicas de formulação.
Vulnerabilidad infantil ante los smartphones: en busca de la competencia parental positiva
Authors: Ramírez García Antonia , Gonzalez Fernandez Natalia , Salcines Talledo Irina
Published: June 2019

Los dispositivos móviles como los smartphones, están determinando y repercutiendo en muchas de las dinámicas familiares y comunicacionales entre padres e hijos. El uso que los propios progenitores realizan de dicho dispositivo, en muchas ocasiones, puede generar vulnerabilidad en los menores. En este artículo se presenta una investigación cualitativa, en la que se ha realizado un análisis documental de las investigaciones nacionales e internacionales sobre la temática con la finalidad de identificar los riesgos a los que se enfrentan los menores cuando los progenitores utilizan el Smartphone en el contexto familiar. Los resultados destacan, entre las principales problemáticas los accidentes de tráfico, y la repercusión de la frecuencia de uso del dispositivo en las distracciones parentales y los efectos negativos  sobre las relaciones paterno-filiares.
Vulneráveis ou vítimas? A experiência das redes de luta antimanicomial em Belo Horizonte e a construção relacional de biopotências
Authors: Veloso Lucas , Salgueiro Marques Angela Cristina
Published: June 2019

O presente artigo procura apresentar uma reflexão em duas frentes acerca dos modos de existência, vulnerabilidades e resistências que atravessam as experiências, interações e processos comunicativos de sujeitos e sujeitas em sofrimento mental no contexto da cidade de Belo Horizonte (MG). Primeiramente, a noção de vulnerabilidades é contraposta à ideia de vítima passiva, destacando-se o seu enraizamento nos conflitos sociais e na construção relacional da autonomia, à luz dos modos de expressão política do coletivo Associação dos Usuários de Saúde Mental de Minas Gerais (ASSUSAM-MG). Em um segundo momento, procura-se verificar em que sentido vulnerabilidades atuam na criação e invenção de narrativas, corporeidades, redes de aliança e modos de auto-determinação político-expressivas que emergem no contexto de luta antimanicomial, possibilitado pela Associação.
Repensar os trânsitos entre ciência e sociedade hoje: alguns apontamentos para uma agenda cidadã minoritária
Authors: Marras Stelio
Published: June 2019

A tarefa de repensar princípios e andamento das ciências e técnicas modernas implica repensar, a cada vez, a sociedade que aí mesmo podemos visar e manter. Esse é um problema sensível do mundo moderno contemporâneo e de seu futuro próximo e distante. Para outra ciência possível, também outra sociedade e outra política possíveis pedem passagem diante das crescentes ameaças das chamadas crises ambientais ou ecológicas e do agravamento das chamadas desigualdades sociais. O objetivo deste artigo é repensar os trânsitos entre ciência e sociedade a partir dessas crises e ameaças, bem como, nesse âmbito, indicar alguns apontamentos para agendasminoritárias a um só tempo locais e interdependentes.
O ioga e os seus novos bens de salvação: relaxamento espiritual e homeostase divina
Authors: Simões Roberto Serafim
Published: June 2019

O período antigo do ioga emerge em meio a uma sociedade indiana estratificada e influenciado por religiões como o samkhya e o hinduísmo bramânico, sistematizando-se como um dársana ortodoxo hinduísta por meio da escritura antiga Ioga Sutras (IS) alguns séculos antes de era cristã. O IS explica tanto as causas do sofrimento humano quanto a promessa de uma boa vida iogue, baseando-se na teoria comportamental dos klesas (apego, aversão, medo da morte, orgulho e ignorância) como nefastos a evolução espiritual. Um caminho óctuplo ou asthanga ioga (AI) edifica-se a partir dele como a proposta ioguica de salvação da alma. O AI visa, por meio de condutas éticas, práticas rituais corporais e a experiência mística do samadhi atenuar os klesas em busca da união com deus/Isvara. Na idade média indiano, entre os séculos X-XV d.C., esse sistema de crenças ioguico encontra a religiosidade tântrica, jainista e budista elevando o valor do corpo em detrimento a outros aspectos doutrinais do IS.            A fase moderna do ioga, no entanto, está sendo erigida por influência de um novo contexto social-religioso. Atualmente, muito mais do que brâmanes e swamis, o ioga busca a sua legitimidade como caminho espiritual sob a égide da racionalidade científica e de novos movimentos religiosos do ocidente. Nesse processo, o ioga ressignifica a sua linguagem mística que circulava entre os ashrams e florestas indianos dos tempos antigo e medieval, para um público que enfrenta os desafios estressantes de se viver nos grandes centros urbanos ocidentais, sobretudo, uma sociedade do consumo, secular e privatizada religiosamente. Sabe-se que nos tempos atuais o ioga ressignifica a sua fisiologia metafísica à luz da ciência biomédica, desconfio que a teoria dos klesas, pode estar passando por uma reforma religiosa também.A partir dessa conjuntura novas crenças despontaram para legitimar o discurso do ioga frente ao panorama social-religioso em que ele vive atualmente. Mais do que simples ressignificação simbólica, a soteriologia ioguica moderna está passando hoje por um processo de reforma soteriológica. As principais transformações que se destacaram, estão: 1) na elevação da concepção de estresse ao nível de klesa ou obstáculo espiritual; 2) o relaxamento, antagônico ao estresse-klesa, conquista natureza espiritual; e 3) por consequência, a libertação/salvação dos klesas-estresse adquiri substância “empírica” de estado místico como uma espécie de “homeostase divina”.             Conclui-se que a racionalidade científica ao invés de promover o desencantamento religioso do ioga, legitima-o como um novo sistema de crenças e produz novos bens de salvação (estresse-klesa, relaxamento-espiritualizado e homeostase-samadhi). A associação dos benefícios para a saúde das práticas do ioga defendidos e propalados pela ciência fisiológica biomédica associado ao desassossego dos centros urbanos ocidentais, pode estar transformando a ética religiosa do ioga, corporificando os klesas, como causa essencial do sofrimento humano.
BHAGAVAD-GĪTĀ: CÂNONE PARA PAZ OU PARA GUERRA?
Authors: Valera Lúcio , Lara Marco Antonio
Published: June 2019

O presente trabalho tenta esclarecer o posicionamento da Bhagavad-gītā (Canção do Senhor Supremo) – um dos documentos filosófico-religiosos mais importantes do Sânscrito e de toda a literatura indiana clássica, os Vedas –, com relação a guerra e a violência, já que o texto hindu, pertencente a grande epopeia do Mahābhārata, é narrado alguns momentos antes da grande batalha de Kurukṣetra, e dois de seus personagens protagonistas, Kṛṣṇa e Arjuna, serão combatentes ativos em tal empreendimento bélico. Por meio da devida revisão bibliográfica, utilizarei do método indutivo, para ulteriormente, efetivar uma análise de texto na narrativa na própria obra hindu, tentando abarcar a perspectiva hermenêutica da própria tradição, em nosso caso específico da escola Vaiṣṇava Gauḍīya de Caitanya Mahāprabhu e os devidos comentaristas da academia.
A ESTRUTURA DO YOGA NA BHAGAVAD-GĪTĀ
Authors: Silvestre Ricardo
Published: June 2019

O objetivo deste artigo é analisar o conceito de yoga da Bhagavad-gītā. Cinco concepções de yoga encontradas no texto são descritas: yoga enquanto disciplina ou prática, yoga enquanto disciplina qualificada, yoga enquanto estado mental de equanimidade e renúncia, yoga enquanto estado de união e yoga enquanto poder místico. As relações existentes entre essas concepções são explicitadas e o que podemos chamar de a estrutura do yoga na Bhagavad-gītā é pormenorizada.
Redes sociais e religião: um estudo sobre a experiência religiosa dos jovens na sociedade imagética conectada
Authors: Azevedo Bonnie Moraes Manhaes de , Ferreira Raphael da Silva
Published: June 2019

O cristianismo sempre buscou perpetuar sua mensagem evangélica, possibilitando aos homens o contato com a sua revelação fundante, e a experiência do sagrado. Hoje, nos tempos da sociedade em rede, percebe-se um novo contexto para este desafio da religião cristã: os indivíduos contemporâneos, sobretudo os mais jovens, que darão continuidade a essa iniciativa do cristianismo em tempos futuros, desenvolvem suas relações influenciadas pelo advento da internet. Esta constitui um novo ambiente de vida, expressão, identidade e relação com os outros e também com o transcendente, utilizando-se fortemente das fotografias. Este artigo almeja compreender tais influências da sociedade conectada na forma com a qual os fiéis vivem a experiência pessoal e comunitária do sagrado neste novo ambiente.
Os fundamentos psicológicos da agência sobre-humana
Authors: Silva Thales , Mariano Rondineli
Published: June 2019

Um dos pressupostos centrais do estudo cognitivo do pensamento religioso é o de que podemos explicar a tendência humana em conceber os agentes sobre-humanos encontrados em diferentes culturas. Não obstante se esses agentes são uma única divindade ou muitas distintas, se são ancestrais ou fantasmas de indivíduos recém-falecidos, os processos psicológicos que tornam tais concepções persuasivas e naturais às mentes humanas são os mesmos e podem ser analisados empiricamente. Sob uma perspectiva cognitiva, entender como esses preceitos universais de nossa espécie se combinam com diferentes circunstâncias históricas se faz necessário para uma melhor explanação das ideias e condutas religiosas presentes nas mais diversas comunidades humanas.
Extremistas religiosos, terraplanistas, alienígenas e além: a dinâmica da espiral ascendente de complexidade na formação de crenças e experiências contraintuitivas
Authors: Martins Leonardo
Published: June 2019

Um dos temas mais caros à psicologia é o estudo das atitudes. Contudo, a assunção sistemática de crenças e experiências altamente exóticas em seu contexto de origem apresenta um desafio explicativo. Entre os tantos exemplos presentes em nossa cultura estão o extremismo religioso, as crenças na Terra plana, e as alegações e convicções sobre contatos com alienígenas. Propõe-se como contribuição para o campo o modelo da espiral ascendente de complexidade, que participa da explicação para a assunção de crenças e experiências heterodoxas de modo não persuasivo, além de adequado às características cognitivas humanas amplamente conhecidas. Tal modelo tem implicações práticas, como ao alicerçar novos programas de reabilitação de terroristas e iniciativas de divulgação científica voltadas ao enfrentamento de teorias conspiratórias.
REKAYASA MODEL PENGUATAN KESIAPAN KERJA LULUSAN PENDIDIKAN VOKASI (Studi pada SMK di Kota Semarang)
Authors: Sijabat Rauly
Published: June 2019

The study of job readiness has been widely researched but is still an interesting topic given the empirical phenomenon which indicates the low level of work readiness. In addition, the findings from the studies that have been conducted on explanatory variables of work readiness are also not conclusive. Departing from this phenomenon, the study again developed a research model that "mated" the empirical and theoretical aspects that could explain the variable work readiness. Empirical testing on the work readiness research model was conducted on vocational education graduates in Semarang who became the object of research. To the object of the study, interviews were conducted using questionnaires to be further analyzed by Structural Equation Modeling (SEM) as an analytical technique approach. Empirical testing results in the research model and the influence of research variables indicate that the research model is the right model to describe the estimated population. The results of testing the influence between variables indicate that graduate competencies are built through training and industrial work practices, the competencies that are built will create locus of control and self efficacy which ultimately strengthens vocational education graduates' job readiness in Semarang.
KONSERVATISME AKUNTANSI DAN DETERMINASINYA
Authors: Karantika Marlia Dina , Sulistyawati Ardiani Ika
Published: June 2019

The purpose of financial statements, among others, provide reliable financial information regarding keunagan position and results of operations of the company at a certain period, as well as provide financial information that can help the parties concerned to interpret the conditions and the potential of a business. In presenting the financial statements of each company in selecting accounting methods can be used to produce different financial statements - depending on each company in accordance with the wishes and needs of the company or in other words, companies are free to choose the accounting method used in accordance with the conditions and the measures taken by the company. In the accounting process in order to produce quality information and useful, the company faced with the constraints (constraints) one of them is conservatism. The study was conducted involving 120 manufacturing companies taahun books from 2010 to 2014 by using purposive sampling method. The research proves that conenant debt and firm size effect on accounting conservatism but not so with other fariabel are growth opportunities, managerial ownership, institutional ownership and public ownership. Suggestions for further research should add or replace other variables that have not been included in this study that have an influence on conservatism.
An Almost Periodic Lasota-Wazewska Dynamic Model on Time Scales
Authors: Yao Zhijian
Published: June 2019

This paper deals with almost periodicity of Lasota-Wazewska dynamic equation on time scales. By applying a method based on the fixed point theorem of decreasing operator, we establish sufficient conditions for the existence of a unique almost periodic positive solution. We also give iterative sequence which converges to almost periodic positive solution. Moreover, we investigate the exponential stability of almost periodic solution by means of Gronwall inequality. Our study unifies differential and difference equations.
Mathematical Optimization Model Technique for Network Congestion Control in Global System for Mobile Communications
Authors: Aja Remigius Okeke , Agwu Emeka Uchendu , Ezeh Sussan Ijeoma , Stephen Udochi John
Published: June 2019

The introduction of Global System for Mobile Communication (GSM) in Nigeria is responsible for significant tremendous teledensity ratio increment, which results in network congestion in most busy areas. In this paper, we applied a Second Order Necessary Condition (a Mathematical Optimization Technique) as a tool in solving the problem of network congestion. One of the GSM providers; Mobile Telecommunication of Nigeria (MTN), was used to demonstrate the usefulness of Second Order Necessary Condition to the control of network congestion at Michael Okpara University of Agriculture, Umudike (MOUAU). Free flow of connection between mobile phone users at different locations within the area of investigation was established, hence congestion controlled.
Pengaruh Terapi Dzikir Tasbih Pada Pasien Pre Operasi Bedah Hernioraphy Terhadap Tekanan Darah Di Ruang Rawat Inap RSUD Kota Semarang
Authors: Syaifudin Achmad
Published: June 2019

Berdasarkan survei pendahuluan jumlah kasus hernioraphy pada tahun 2014 sebanyak 135 kasus. Pada tahun 2015 mengalami peningkatan menjadi 145 kasus. Untuk mengetahui pengaruh terapi dzikir tasbih pada pasien pre operasi bedah hernioraphy terhadap tekanan darah. Jenis penelitian yang digunakan adalah eksperimental semu (quasi experiment). Desain penelitian ini adalah static group comparison. Populasi dalam penelitian ini adalah pasien hernioraphy pada bulan Januari dan Februari 2016 sebanyak 25 kasus. Sampel penelitian kelompok perlakuan sebanyak 15 orang dan kelompok kontrol sebanyak 15 orang. Teknik pengambilan sampel pada penelitian ini adalah purposive sampling. Ada perbedaan tekanan darah sistole pada kelompok perlakuan. Ada perbedaan tekanan darah diastole pada kelompok perlakuan. Ada perbedaan tekanan darah sistole pada kelompok kontrol. Ada perbedaan tekanan darah diastole pada kelompok kontrol. Ada perbedaan yang signifikan terapi dzikir tasbih pada pasien pre operasi bedah hernioraphy terhadap tekanan darah sistole di Ruang Rawat Inap RSUD Kota Semarang. Ada perbedaan yang signifikan terapi dzikir tasbih pada pasien pre operasi bedah hernioraphy terhadap tekanan darah diastole. Rumah sakit sebaiknya menerapkam terapi non farmakologi seperti terapi dzikir untuk mengatasi peningkatan tekanan darah pada pasien yang akan menjalani operasi agar pasien merasa tenang dan tidak cemas saat akan operasi.