bluuebunny/crossref_metadata_2025 huggingface dataset:
Dual Control of Depositional Facies on Uranium Mineralization in Coal‐bearing Series: Examples from the Tuanyushan Area of the Northern Qaidam Basin, NW China
Authors: GUO Biao , SHAO Longyi , WEN Huaijun , HUANG Guangnan , ZOU Mingjun , LI Yonghong
Published: April 2018

The uranium deposits in the Tuanyushan area of northern Qaidam Basin commonly occur in coal‐bearing series. To decipher the U‐enrichment mechanism and controlling factors in this area, a database of 72 drill cores, including 56 well‐logs and 3 sampling wells, was examined for sedimentology and geochemistry in relation to uranium concentrations. The results show that coal‐bearing series can influence uranium mineralization from two aspects, i.e., spatial distribution and dynamic control. Five types of uranium‐bearing rocks are recognized, mainly occurring in the braided river and braided delta sedimentary facies, among which sandstones near the coals are the most important. The lithological associations of sandstone‐type uranium deposits can be classified into three subtypes, termed as U‐coal type, coal‐U‐coal type, and coal‐U type, respectively. The coal and fine siliciclastic rocks in the coal‐bearing series confined the U‐rich fluid flow and uranium accumulation in the sandstone near them. Thus, the coal‐bearing series can provide good accommodations for uranium mineralization. Coals and organic matters in the coal‐bearing series may have served as reducing agents and absorbing barriers. Methane is deemed to be the main acidolysis hydrocarbon in the U‐bearing beds, which shows a positive correlation with U‐content in the sandstones in the coal‐bearing series. Additionally, the δ13C in the carbonate cements of the U‐bearing sandstones indicates that the organic matters, associated with the coal around the sandstones, were involved in the carbonation, one important component of alteration in the Tuanyushan area. Recognition of the dual control of coal‐bearing series on the uranium mineralization is significant for the development of coal circular economy, environmental protection during coal utilization and the security of national rare metal resources.
How Often Do Safety Signals Occur by Chance in First‐in‐Human Trials?
Authors: Clayton Gemma L. , Schachter Asher D. , Magnusson Baldur , Li Yue , Colin Laurence
Published: April 2018

Clinicians working on first‐in‐human clinical studies need to be able to judge whether safety signals observed on an investigational drug were more likely to have occurred by chance or to have been caused by the drug. We retrospectively reviewed 84 Novartis studies including 1,234 healthy volunteers receiving placebo to determine the expected incidence of changes in commonly measured laboratory parameters and vital signs, in the absence of any active agent. We calculated the frequency of random incidence of safety signals, focusing on the liver, cardiovascular system, kidney, and pancreas. Using the liver enzyme alanine aminotransferase (ALT) as an example, we illustrate how a predictive model can be used to determine the probability of a given subject to experience an elevation of ALT above the upper limit of the normal range under placebo, conditional on the characteristics of this subject and the study.
Physical deterioration in an acute mental health unit: A quantitative retrospective analysis of medical emergencies
Authors: Porter Joanne E. , Cant Robyn , Missen Karen , Raymond Anita , Churchill Anne
Published: April 2018

Nursing management of physical deterioration of patients within acute mental health settings is observed, recorded, and actively managed with the use of standardized Adult Deterioration Detection System (ADDS) charts. Patient deterioration may require the urgent assistance of a hospital rapid response or Medical Emergency Team. A five‐and‐a‐half‐year (2011–2016) audit of hospital‐wide Medical Emergency Team attendances was conducted in an acute mental health unit of a single large 250 bed regional hospital in Victoria, Australia. Data were extracted from the hospitals’ quality and patient safety program,RISKMan, and entered into a statistical data program for analysis. A total of 140 patient records were analysed, and the ‘Worried’ category (34%,n = 47) was the principle reason for a Medical Emergency Team call in a mental health ward, followed by hypotension (23%,n = 31) and a low Glasgow Coma Score (16%,n = 22). Upon further investigation of the ‘Worried’ category, the most common conditions recorded were an altered conscious state (22%,n = 9), low oxygen saturation (20%,n = 8), or chest pain (17%,n = 7). Activation of Medical Emergency Team calls predominantly occurred in the daylight morning hours (6am–12md). When data were compared to the general hospital patients, the context of the physiological deterioration of the mental health patients was strikingly similar. Further research is recommended to ascertain the extent and frequency with which staff working in mental health units are performing vital signs monitoring as an essential component of detection of early signs of physiological deterioration.
Countercyclical Policy and the Speed of Recovery after Recessions
Authors: FRANCIS NEVILLE , JACKSON LAURA E. , OWYANG MICHAEL T.
Published: April 2018

We consider policies intended to accelerate recoveries by analyzing the duration of recoveries of U.S. states. Studying multiple recessions for a state and multiple states for a recession controls for differences in the economic conditions and the causes of recessions. Expansionary monetary policy at the national level helps to stimulate the exit of individual states from recession. Exogenous measures of decreases in taxes or targeted increases in federal spending reduce state recovery times, while ambient economic conditions (other states in the same region suffering from recession, the length of the preceding recession, and increases in oil prices) extend recovery times.
Insights on clinical relevance of sarcopenia in patients with cirrhosis and sepsis
Authors: Ebadi Maryam , Montano‐Loza Aldo J.
Published: April 2018

See Article on Page 851
Eastern Orthodoxy and national indifference in Habsburg Bukovina, 1774–1873
Authors: Leustean Lucian N.
Published: April 2018

Bukovina, a predominantly Eastern Orthodox land, today divided between northern Romania and southwestern Ukraine, was the outmost frontier of the Habsburg Empire. Between its incorporation into the Empire in 1774 and Greater Romania in 1918, Bukovina produced an unusual Church. Rather than support a mono‐ethnic Orthodox community, as evident across nation building processes in Southeastern Europe, in 1873, Romanians, Ruthenians and Serbians (in Dalmatia) established a multi‐ethnic Church which rejected association with that of their Romanian brethren in Habsburg Transylvania. This article explores the lead up to the establishment of the church in 1873 and argues that, under the leadership of Bishop Eugen Hakmann, the Metropolitanate of Bukovina and Dalmatia was a novel ecclesiastical institution in which the clergy refused national identification while laypeople supported the growing rise of nationalist movements. This multi‐ethnic Church became one of the most intriguing Orthodox structures which would impact upon the emergence of national churches in nineteenth‐century Romania, Serbia and Ukraine.
Light‐emitting Diode Blue Light Alters the Ability of Penicillium digitatum to Infect Citrus Fruits
Authors: Lafuente María T. , Alférez Fernando , González‐Candelas Luis
Published: April 2018

Penicillium digitatum (Pers.:Fr.) Sacc. is the main fungus causing postharvest losses in citrus fruits. Previous work showed the potential of LED blue light (LBL) in controlling P. digitatum growth. Here, we have investigated whether LBL alters the ability of this fungus to infect citrus fruits. Before fruit infection, Petri plates inoculated with the same conidia concentration were held under darkness (control) or LBL (100 μmol m−2 s−1) for 8 d (continuous light), or were treated with the same LBL for 3 d and then shifted to darkness for 5 d (non‐continuous light). Spores from cultures exposed to continuous light showed very low capacity to germinate (1.8% respect to control) but a high viability and a similar morphology and ability to infect the fruits than spores from control cultures. The number of spores produced in plates exposed to non‐continuous light was slightly lower than in control plates, but they showed much lower viability and lower capacity to infect the fruits. This effect was more likely related to aberrant morphology of spores, which formed aggregates, than to its metabolic activity or its ability to produce ethylene that might contribute to destroy natural defense barriers from the fruit.
The Historical Presidency: The Foundations of the Modern Presidency: Presidential Representation, the Unitary Executive Theory, and the Reorganization Act of 1939
Authors: Dearborn John A.
Published: April 2018

Two claims of presidential authority—presidential representation and the unitary executive theory—were contested during the legislative battle over the reorganization of the executive branch in the late 1930s. A unitary executive theory envisioned top‐down control of the executive branch, while a theory of presidential representation tied the president's purported national viewpoint to a larger role in policy making. I argue that, in passing the Reorganization Act of 1939, Congress rejected the unitary executive theory but cautiously endorsed the idea of presidential representation. As later shown in Immigration and Naturalization Service v. Chadha, however, Congress' accommodation of presidential representation did not provide a very firm foundation for presidential reorganization authority.
A physical catalyst for the electrolysis of nitrogen to ammonia
Authors: Song Yang , Johnson Daniel , Peng Rui , Hensley Dale K. , Bonnesen Peter V. , Liang Liangbo , Huang Jingsong , Yang Fengchang , Zhang Fei , Qiao Rui , Baddorf Arthur P. , Tschaplinski Timothy J. , Engle Nancy L. , Hatzell Marta C. , Wu Zili , Cullen David A. , Meyer Harry M. , Sumpter Bobby G. , Rondinone Adam J.
Published: April 2018

A nanostructured, carbon-based physical catalyst electrochemically reduces N
2
to ammonia under ambient conditions.
Bacteria as living patchy colloids: Phenotypic heterogeneity in surface adhesion
Authors: Vissers Teun , Brown Aidan T. , Koumakis Nick , Dawson Angela , Hermes Michiel , Schwarz-Linek Jana , Schofield Andrew B. , French Joseph M. , Koutsos Vasileios , Arlt Jochen , Martinez Vincent A. , Poon Wilson C. K.
Published: April 2018

Genetically identical bacteria possess varying numbers of surface-adhering patches.
Electronic zero-point fluctuation forces inside circuit components
Authors: Shahmoon Ephraim , Leonhardt Ulf
Published: April 2018

Superconducting electronic circuits could lead to an alternative route for the study of quantum fluctuation forces.
Superadiabatic quantum friction suppression in finite-time thermodynamics
Authors: Deng Shujin , Chenu Aurélia , Diao Pengpeng , Li Fang , Yu Shi , Coulamy Ivan , del Campo Adolfo , Wu Haibin
Published: April 2018

Friction in quantum thermodynamics results from fast driving schemes that generate nonadiabatic excitations.
Superconducting pairing of topological surface states in bismuth selenide films on niobium
Authors: Flötotto David , Ota Yuichi , Bai Yang , Zhang Can , Okazaki Kozo , Tsuzuki Akihiro , Hashimoto Takahiro , Eckstein James N. , Shin Shik , Chiang Tai-Chang
Published: April 2018

Bismuth selenide becomes superconducting upon coupling to metallic niobium, and its topological states pair up to form a gap.
Transcription factor ID2 prevents E proteins from enforcing a naïve T lymphocyte gene program during NK cell development
Authors: Zook Erin C. , Li Zhong-Yin , Xu Yiying , de Pooter Renée F. , Verykokakis Mihalis , Beaulieu Aimee , Lasorella Anna , Maienschein-Cline Mark , Sun Joseph C. , Sigvardsson Mikael , Kee Barbara L.
Published: April 2018

NK cell maturation depends on transcription factor ID2 blocking acquisition of a naïve T cell gene program.
Quantification of Leptospira interrogans Survival in Soil and Water Microcosms
Authors: Casanovas-Massana Arnau , Pedra Gabriel Ghizzi , Wunder Elsio A. , Diggle Peter J. , Begon Mike , Ko Albert I.
Published: April 2018

Leptospira interrogans
is the etiological agent of leptospirosis, a globally distributed zoonotic disease. Human infection usually occurs through skin exposure with water and soil contaminated with the urine of chronically infected animals. In this study, we aimed to quantitatively characterize the survival of
Leptospira interrogans
serovar Copenhageni in environmental matrices. We constructed laboratory microcosms to simulate natural conditions and determined the persistence of DNA markers in soil, mud, spring water and sewage using a quantitative PCR (qPCR) and a propidium monoazide (PMA)-qPCR assay. We found that
L. interrogans
does not survive at high concentrations in the tested matrices. No net growth was detected in any of the experimental conditions and in all cases the concentration of the DNA markers targeted decreased from the beginning of the experiment following an exponential decay with a decreasing decay rate over time. After 12 and 21 days of incubation the spiked concentration of 10
6
L. interrogans
cells/ml or g decreased to approximately 100 cells/ml or g in soil and spring water microcosms, respectively. Furthermore, culturable
L. interrogans
persisted at concentrations under the limit of detection by PMA-qPCR or qPCR for at least 16 days in soil and 28 days in spring water. Altogether, our findings suggest that the environment is not a multiplication reservoir but a temporary carrier of
L. interrogans
Copenhageni, although the observed prolonged persistence at low concentrations may still enable the transmission of the disease.

IMPORTANCE
Leptospirosis is a zoonotic disease caused by spirochetes of the genus
Leptospira
that primarily affects impoverished populations worldwide. Although leptospirosis is transmitted by contact with water and soil, little is known about the ability of the pathogen to survive in the environment. In this study, we quantitatively characterized the survival of
L. interrogans
in environmental microcosms and found that although it cannot multiply in water, soil or sewage, it survives for extended time periods (days to weeks depending on the matrix). The survival parameters obtained here may help to better understand the distribution of pathogenic
Leptospira
in the environment and improve the predictions of human infection risks in areas where such infections are endemic.
Public performance reporting and hospital choice: a cross-sectional study of patients undergoing cancer surgery in the Australian private healthcare sector
Authors: Prang Khic-Houy , Canaway Rachel , Bismark Marie , Dunt David , Miller Julie A. , Kelaher Margaret
Published: April 2018

Objectives

National mandatory public performance reporting (PPR) for Australian public hospitals, including measures of cancer surgery waiting times, was introduced in 2011. PPR is voluntary for private hospitals. The aims of this study were to assess whether PPR of hospital data is used by patients with breast, bowel or lung cancer when selecting a hospital for elective surgery and how PPR could be improved to meet their information needs.

Design

A national cross-sectional postal questionnaire.

Setting

Australian private healthcare sector.

Participants

Private patients with breast, bowel or lung cancer who attended a public or private hospital for elective surgery (n=243) in 2016.

Outcome measures

Patients’ choice of hospital, use of PPR information and preferred areas of PPR information. Descriptive and conventional qualitative content analyses were conducted.

Results

Two hundred and twenty-eight respondents (94%) attended a private hospital. Almost half could choose a hospital. Choice of hospital was not influenced by PPR data (92% unaware) but by their specialist (90%). Respondents considered PPR to be important (71%) but they did not want to see the information, preferring their general practitioners (GPs) to tell them about it (40%). Respondents considered surgery costs (59%), complications (58%) and recovery success rates (57%) to be important areas of information that should be publicly reported. Almost half suggested that quality indicators should be reported at the individual clinician level. Analysis of the open-ended questions identified four themes: (1) decision-making factors; (2) data credibility; (3) unmet information needs and (4) unintended consequences.

Conclusions

PPR of hospital data had no substantial impact on patients’ choice of hospital. Nonetheless, many respondents expressed interest in using it in future. To increase PPR awareness and usability, personalised and integrated information on cost and quality of hospitals is required. Dissemination of PPR information via specialists and GPs could assist patients to interpret the data and support decision-making.
The relationship between sleep duration and fruit/vegetable intakes in UK adults: a cross-sectional study from the National Diet and Nutrition Survey
Authors: Noorwali Essra A , Cade Janet E , Burley Victoria J , Hardie Laura J
Published: April 2018

Objectives

There is increasing evidence to suggest an association between sleep and diet. The aim of the present study was to examine the association between sleep duration and fruit/vegetable (FV) intakes and their associated biomarkers in UK adults.

Design

Cross-sectional.

Setting

Data from The National Diet and Nutrition Survey.

Participants

1612 adults aged 19–65 years were included, pregnant/breastfeeding women were excluded from the analyses.

Outcome measures

Sleep duration was assessed by self-report, and diet was assessed by 4-day food diaries, disaggregation of foods containing FV into their components was conducted to determine total FV intakes. Sleep duration was divided into: short (<7 hours/day), reference (7–8 hours/day) and long (>8 hours/day) sleep periods. Multiple regression adjusting for confounders was used for analyses where sleep duration was the exposure and FV intakes and their associated biomarkers were the outcomes. Restricted cubic spline models were developed to explore potential non-linear associations.

Results

In adjusted models, long sleepers (LS) consumed on average 28 (95% CI −50 to −6, p=0.01) g/day less of total FV compared to reference sleepers (RS), whereas short sleepers (SS) consumed 24 g/day less (95% CI −42 to –6, p=0.006) and had lower levels of FV biomarkers (total carotenoids, β-carotene and lycopene) compared to RS. Restricted cubic spline models showed that the association between sleep duration and FV intakes was non-linear (p<0.001) with RS having the highest intakes compared to SS and LS. The associations between sleep duration and plasma total carotenoids (p=0.0035), plasma vitamin C (p=0.009) and lycopene (p<0.001) were non-linear with RS having the highest levels.

Conclusions

These findings show a link between sleep duration and FV consumption. This may have important implications for lifestyle and behavioural change policy.
Numerical simulation of h-adaptive immersed boundary method for freely falling disks
Authors: Zhang Pan , Xia Zhenhua , Cai Qingdong
Published: April 2018

In this work, a freely falling disk with aspect ratio 1/10 is directly simulated by using an adaptive numerical model implemented on a parallel computation framework JASMIN. The adaptive numerical model is a combination of the h-adaptive mesh refinement technique and the implicit immersed boundary method (IBM). Our numerical results agree well with the experimental results in all of the six degrees of freedom of the disk. Furthermore, very similar vortex structures observed in the experiment were also obtained.
Numerical investigations of wake interactions of two wind turbines in tandem
Authors: Qian Yaoru , Wang Tongguang
Published: April 2018

Aerodynamic performance and wake interactions between two wind turbine models under different layouts are investigated numerically using large eddy simulation in conjunction with actuator line method based on the “Blind Test” series wind tunnel experiments from Norwegian University of Science and Technology. Numerical results of the power and thrust coefficients of the two rotors and wake characteristics are in good agreement with the experimental measurements. Extended investigations emphasizing the influence of different layout arrangements on the downstream rotor performance and wake development are conducted. Results show that layout arrangements have great influence on the power and thrust prediction of the downstream turbine.
Analyzing and Predicting Spatial Crime Distribution Using Crowdsourced and Open Data
Authors: Belesiotis Alexandros , Papadakis George , Skoutas Dimitrios
Published: April 2018

Data analytics has an ever increasing impact on tackling various societal challenges. In this article, we investigate how data from several heterogeneous online sources can be used to discover insights and make predictions about the spatial distribution of crime in large urban environments. A series of important research questions is addressed, following a purely data-driven approach and methodology. First, we examine how useful different types of data are for the task of crime levels prediction, focusing especially on how prediction accuracy can be improved by combining data from multiple information sources. To that end, we not only investigate prediction accuracy across all individual areas studied, but also examine how these predictions affect the accuracy of identified crime hotspots. Then, we look into individual features, aiming to identify and quantify the most important factors. Finally, we drill down to different crime types, elaborating on how the prediction accuracy and the importance of individual features vary across them. Our analysis involves six different datasets, from which more than 3,000 features are extracted, filtered, and used to learn models for predicting crime rates across 14 different crime categories. Our results indicate that combining data from multiple information sources can significantly improve prediction accuracy. They also highlight which features affect prediction accuracy the most, as well as for which particular crime categories the predictions are more accurate.
Secure Behavior over Time
Authors: Vedadi Ali , Warkentin Merrill
Published: April 2018

Research has investigated the role of numerous influences on individual information security behaviors, including protection motivation, deterrence, and various dispositional and environmental factors. Various theories have been applied to study these influences on security behaviors. One major research stream has looked at threat and coping appraisals by IT users. However, users' beliefs, attitudes, appraisals, and intentions are not static, and there has been little attention to how these factors interact over time. When users (directly or vicariously) experience a security threat, they tend to engage in improved security hygiene, but often only for a limited time. A major theory that can provide comprehensive and unified insights into the phenomenon of continuous secure behavior is the Theory of Process Memory which explains the role of prior experience effects and the underlying mechanisms of continuous behavior, including feedback mechanism, sequential updating mechanism, behavioral automaticity (habit), and reason-based action. The application of this theory to behavioral information security research can foster a deep understanding about how each cognitive mechanism can influence IT users' continuous secure behavior, and through which type of human memory each mechanism can act. This rich theory, which is well-established in cognitive psychology, can help behavioral information security scholars to rigorously investigate the very important, yet understudied, phenomenon of continuance secure behavior.
Modeling Statin-Induced Reductions of Cardiovascular Events in Primary Prevention: A VOYAGER Meta-Analysis
Authors: Karlson Björn W. , Nicholls Stephen J. , Lundman Pia , Barter Philip J. , Palmer Michael K.
Published: April 2018

Objective: We used individual patient data from the VOYAGER database to estimate cardiovascular (CV) risk reduction with commonly used high-intensity statins. Methods: In patients with known atherosclerotic CV disease (ASCVD) treated with high-intensity statin therapy (n = 6,735), the predicted risk reduction was estimated using the Cholesterol Treatment Trialists’ Collaboration meta-analysis, which determined risk reduction per 38.7 mg/dL statin-mediated reduction in low-density lipoprotein cholesterol. Results: The greatest reductions in risk were seen in major vascular events (estimated rate ratios ranged from 0.55 with rosuvastatin [RSV] 40 mg to 0.60 with atorvastatin [ATV] 40 mg) and coronary heart disease death (estimated rate ratios ranged from 0.58 with RSV 40 mg to 0.64 with ATV 40 mg). Conclusions: Our results show that, in individuals without clinical ASCVD, statin therapy has the potential to reduce the frequency of CV events.
Outlook: Immunotherapy in Gastrointestinal Carcinoma - Innovative Strategies
Authors: Moehler Markus , Göpfert Katrin , Lenz Heinz-Josef
Published: April 2018

Immune checkpoint inhibitors are emerging as a therapeutic approach for patients with advanced or metastatic gastrointestinal malignancies following the recent Food and Drug Administration and Asian approvals for colorectal, gastric, and hepatocellular carcinoma. As discussed in earlier articles, phase I-II trials demonstrate quite positive clinical activity, particularly in patients with immunogenic cancer subtypes. This outreach paper discusses some of the next innovative immunotherapy strategies under development. Here, tumor-associated macrophages, myeloid-derived suppressor cells, and regulatory T cells are increasingly coming into focus as new targets. Besides the well described use of checkpoint inhibitors, blockade of ‘Wnt' or Csf1R signaling pathways as well as combinatorial treatment strategies offer promising examples for overcoming immune silencing within the resistant tumor microenvironment.
Assessment of Embryo-Induced Transcriptomic Changes in Hamster Uterus Using RNA-Seq
Authors: Huang Ming-Yu , Zhang Wen-Qian , Zhao Miao , Zhu Can , He Jia-Peng , Liu Ji-Long
Published: April 2018

Background/Aims: The mouse is widely used as an animal model for studying human embryo implantation. However, the mouse is unique in that both ovarian progesterone and estrogen are critical to implantation, whereas in the majority of species (e.g. human and hamster) implantation can occur in the presence of progesterone alone. Methods: In this study, we analyzed embryo-induced transcriptomic changes in the hamster uterus during embryo implantation by using RNA-seq. Differentially expressed genes were characterized by bioinformatic analysis. Results: We identified a total of 781 differentially expressed genes, of which 367 genes were up-regulated and 414 genes were down-regulated at the implantation site compared to the inter-implantation site. Functional clustering and gene network analysis highlighted the cell cycle process in uterus upon embryo implantation. By examining of the promoter regions of differentially expressed genes, we identified 7 causal transcription factors. Additionally, through connectivity map (CMap) analysis, multiple compounds were identified to have potential anti-implantation effects due to their ability to reverse embryo-induced transcriptomic changes. Conclusion: Our study provides a valuable resource for in-depth understanding of the mechanism underlying embryo implantation.
Extended Bandwidth Microstrip Circular Patch Antenna for Dual Band Applications
Authors: Majeed A. H. , Sayidmarie K. H.
Published: April 2018

This paper presents a new wideband microstrip circular patch antenna (MCPA) fed by proximity-coupled line with double-stub matching to achieve dual-band operation. Bandwidth extension is achieved by exciting higher-order modes in the circular radiating patch, and using two stubs to achieve adequate matching across the obtained two bands. The characteristics of the antenna such as reflection coefficient, impedance bandwidth, gain and radiation pattern are investigated and optimized through parametric studies using the CST Microwave Studio Suite. The antenna achieved a large relative bandwidth of 45.16% at the upper band, while the lower one has 10.3% relative bandwidth. The maximum achieved gain of the dual-band antenna in the 5.8GHz band is 4.62dBi while it is 4.85dBi in the upper band. The antenna has an overall size of 30×30×3.2mm3 corresponding to 0.58λ × 0.58 λ × 0.062 λ at the lower band of 5.8 GHz. The proposed antenna should be useful for WLAN and X-band communication systems.
Towards an accurate Ground-Level Ozone Prediction
Authors: Alshammari Eiman Tamah
Published: April 2018

This paper motivation is to find the most accurate technique to predict the ground level ozone at Al Jahra station, Kuwait. The data on the meteorological variables (air temperature, relative humidity, solar radiation, direction and speed of wind) and concentration of seven pollutants of environment (SO2, NO2, NO, CO2, CO, NMHC, and CH4) were applied to forecast the ozone concentration in atmosphere. In this report, three methods (PLS regression, support vector machine (SVM), and multiple least-square regression) were used to predict ground-level ozone. We used Fifteen parameters to evaluate the performance of methods. Multiple least-square regression, partial least square regression (PLS regression), and SVM using linear and radial kernels were the best performers with MAE (mean absolute error) of 9.17x 10-03, 9.72 x 10-03, 9.64 x 10-03, and 9.12 x 10-03, respectively. SVM with polynomial kernel had MAE of 5.46 x 10-02. These results show that these methods could be used to predict ground-level ozone concentrations at Al Jahra station in Kuwait.
Novel Technique for Comprehensive Noise Identification and Cancellation in GSM Signal
Authors: N Rekha , Jabeen Fathima
Published: April 2018

Presence of noise significantly degrades the contents being transmitted over GSM channel. With the evolution of next generation of communication system, the challenges in noise cancellation in voice along with data transmission are not being addressed effectively by existing filters. Therefore, the proposed system offers a mechanism where emphasis is laid on identification of superior and inferior forms of GSM transient signal followed by cancellation of its noise level. Designed using analytical methodology, the proposed system harness the potential of probability theory to perform a modeling that associates allocated power of the transmitting device with the level of noise. The outcome of the study is found to offer a comprehensive identification of different forms of noise and can precisely determine the level of superior and inferior quality of signal. The outcome significantly assists in designing an accurate filter for noise cancellation in GSM signal.
Tiarrah Computing: The Next Generation of Computing
Authors: Pradhananga Yanish , Rajarajeswari Pothuraju
Published: April 2018

The evolution of Internet of Things (IoT) brought about several challenges for the existing Hardware, Network and Application development. Some of these are handling real-time streaming and batch bigdata, real- time event handling, dynamic cluster resource allocation for computation, Wired and Wireless Network of Things etc. In order to combat these technicalities, many new technologies and strategies are being developed. Tiarrah Computing comes up with integration the concept of Cloud Computing, Fog Computing and Edge Computing. The main objectives of Tiarrah Computing are to decouple application deployment and achieve High Performance, Flexible Application Development, High Availability, Ease of Development, Ease of Maintenances etc. Tiarrah Computing focus on using the existing opensource technologies to overcome the challenges that evolve along with IoT. This paper gives you overview of the technologies and design your application as well as elaborate how to overcome most of existing challenge.
Evaluation and Analysis of Rate Control Methods for H.264/AVC and MPEG-4 Video Codec
Authors: Khan Imran Ullah , Ansari M. A. , Saeed S. Hasan , Khan Kakul
Published: April 2018

Audio, image and video signals produce a vast amount of data. The only solution of this problem is to compress data before storage and transmission. In general there is the three crucial terms as, Bit Rate Reduction, Fast Data Transfer and Reduction in Storage. Rate control is a vigorous factor in video coding. In video communications, rate control must ensure the coded bitstream can be transmitted effectively and make full use of the narrow bandwidth. There are various test models usually suggested by a standard during the development of video codes models in order to video coding which should be suffienciently be efficient based on H.264 at very low bit rate. These models are Test Model Number 5 (TMN5), Test Model Number 8 for H.263, and Verification Model 8 (VM8) for MPEG-4 and H.264 etc. In this work, Rate control analysis for H.264, MPEG-4 performed. For Rate control analysis test model verification model version 8.0 is adopted.
Maximum Power Extraction Method for a Doubly-fed Induction Generator Wind Turbine
Authors: Phan Dinh Chung , Trinh Trung Hieu
Published: April 2018

This research presents a new scheme to extract the maximal available power from a wind turbine employing a doubly fed induction generator (DFIG). This scheme is developed from the wind turbine’s MPPT-curve. Furthermore, we propose control laws for the rotor and grid side-converters. The stability of the proposed maximum available power method and the control laws are proved mathematically upon Lyapunov’s stability criterion. Their efficiency is tested through the simulations of a DFIG wind turbine in Matlab/Simulink. Simulation results are analyzed and compared with that using a conventional scheme. Thanks to the suggested scheme, the wind turbine can track its maximum power point better and the electric energy output is higher comparing with that using the conventional scheme. Furthermore, by the suggested controllers, the rotor speed and current of the DFIG converged to their desired values. In other words, the wind turbine can achieve stable operations by the suggested control laws.
Kalman Filter Algorithm for Mitigation of Power System Harmonics
Authors: Dhineshkumar K. , Subramani C.
Published: April 2018

The maiden application of a variant of Kalman Filter (KF) algorithms known as Local Ensemble Transform Kalman Filter (LET-KF) are used for mitigation and estimation power system harmonics are proposed in this paper. The proposed algorithm is applied for estimating the harmonic parameters of power signal containing harmonics, sub-harmonics and inter-harmonics in presence of random noise. The KF group of algorithms are tested and applied for both stationary as well as dynamic signal containing harmonics. The proposed LET-KF algorithm is compared with conventional KF based algorithms like KF, Ensemble Kalman Filter (En-KF) algorithms for harmonic estimation with the random noise values 0.001, 0.05 and 0.1. Among these three noises, 0.01 random noise results will give better than other two noises. Because the phase deviation and amplitude deviation less in 0.01 random noise. The proposed algorithm gives the better results to improve the efficiency and accuracy in terms of simplicity and computational features. Hence there are less multiplicative operations, which reduce the rounding errors. It is also less expensive as it reduces the requirement of storing large matrices, such as the Kalman gain matrix used in other KF based methods.
Comparative Analysis of Power Quality Indices for Different Lighting Techniogies in Public Lightning
Authors: Perko Jurica , Nikolovski Srete , Majdandžić Ljubomir
Published: April 2018

As with any other product, having electricity of a certain quality is very important for consumers. Its quality has become the key feature that can be disturbed by loads based on power electronic devices. Electricity producers are striving to provide reliable and quality electricity supply to consumers. Public lighting systems that are based on LED lighting technology can potentially positively or negatively affect the power quality because they contain power electronics components in LED drivers. Because of that, two 7-day measurements were conducted on the same public lighting branch but with different lighting technologies (high pressure sodium, known as HPS and LED technology). Results of the measurements were analysed and compared. By analysing the results, other problems were also identified by using LED lighting technology. These problems are addressed in the conclusion of the paper.
A Systematic Review of Existing Data Mining Approaches Envisioned for Knowledge Discovery from Multimedia
Authors: S Benaka Santosha , N Chitra Kiran
Published: April 2018

The extensive use of multimedia technologies extended the applicability of information technology to a large extent which results enormous generation of complex multimedia contents over the internet. Therefore the number of multimedia contents available to the user is also exponentially increasing. In this digital era of the cloud-enabled Internet of Things (IoT), analysis of complex video and image data plays a crucial role.It aims to extract meaningful information as the distributed storages and processing elements within a bandwidth constraint network seek optimal solutions to increase the throughput along with an optimal trade-off between computational complexity and power consumption. However, due to complex characteristics of visual patterns and variations in video frames, it is not a trivial task to discover meaningful information and correlation. Hence, data mining has emerged as a field which has diverse aspects presently in extracting meaningful hidden patterns from the complex image and video data considering different pattern classification approach. The study mostly investigates the existing data-mining tools and their performance metric for the purpose of reviewing this research track.It also highlights the relationship between frequent patterns and discriminativefeatures associated with a video object. Finally, the study addresses the existing research issues to strengthen up the future direction of research towards video analytics and pattern recognition.
A Status Data Transmitting System for Vessel Monitoring
Authors: Nguyen Dinh The Anh , Xuan Huy Le , Vu Tuan Anh , Gia Duong Bach
Published: April 2018

This paper presents a status data transmitting system suitable for vessel monitoring. The system consists of four main parts, which are a status data module, a frequency synthesizer, a power amplifier and a horn antenna. The status data module packs information of the identification, longitude, latitude and state of the vessel into data frames. FSK/MSK/GMSK schemes were used to modulate the data. The frequency synthesizer was designed with very high stability over temperature and very low frequency tolerance. The power amplifier provides 130 W output power at S band. The impedance bandwidth of the horn antenna can be controlled using the beveling technique.
Cinema, música e política em A ópera dos três vinténs e Kuhle wampe
Authors: Bastos Manoel Dourado
Published: April 2018

Este artigo desenvolve uma análise contextual dos filmes Die Dreigroschenoper (A ópera dos três vinténs, 1931) e Kuhle wampe (1932). Buscamos mostrar as diferentes caracterizações da crítica política nos filmes, a partir da relação entre som e imagem. Por isso, a participação dos compositores Kurt Weill e Hanns Eisler na fatura final dos filmes é decisiva. Após observar a parceria de Brecht e Weill, focamo-nos na trajetória de Eisler e sua parceria com Brecht, pelo prisma conceitual de Walter Benjamin, avaliando a presença da música nos filmes, a fim de mostrar a correlação estética e política entre imagem e som a partir da relação entre o audiovisual, teatro e a música de vanguarda.
Deserto azul: paisagens imaginárias no cinema brasileiro
Authors: Martins India Mara , Barroso Elianne Ivo
Published: April 2018

O objetivo deste artigo é refletir sobre a representação da paisagem em Deserto azul (2014), de Éder Santos, considerando algumas categorias de espaço e refletindo sobre o papel da montagem na constituição do espaço cinematográfico. A produção contemporânea de audiovisual, que vai além dos paradigmas clássico-narrativos, se utiliza das possibilidades criadoras da tecnologia digital para as novas salas de cinema com suas gigantescas telas, e o espaço se torna novamente um elemento fílmico que potencializa sensações e narrativas. Deserto azul é uma das poucas produções de ficção científica contemporâneas brasileiras que se vale do uso extensivo de efeitos computacionais destacando as paisagens e valorizando suas possibilidades imersivas e contemplativas. A trajetória de Éder Santos como artista performático de videoarte estabelece um diálogo diferenciado com Deserto azul, que parte de uma narrativa em off e utiliza estratégias de representação do espaço e distensão do tempo para criar uma atmosfera de tédio. De um modo geral nos interessa refletir sobre as estratégias utilizadas para conceber uma narrativa que reflita o tédio de um mundo sem problemas e cujo objetivo maior é a transcendência do próprio espaço e tempo.
Apresentação
Authors: Morettin Eduardo Victorio , Cardenuto Filho Reinaldo , Carvalho Danielle Crepaldi
Published: April 2018

Apresentação da edição 49 de Significação: revista de cultura audiovisual, escrita por Danielle Carvalho, Eduardo Morettin e Reinaldo Cardenuto Filho.
Virtualidade e equivocidade do ser nos xamanismos ameríndios
Authors: Cesarino Pedro de Niemeyer
Published: April 2018

O presente artigo pretende explorar alguns aspectos dos problemas da tradução e da variação ontológica nos estudos dos xamanismos ameríndios, em especial no que se refere à maneira pela qual têm sido pensadas as conexões e limites do humano pela escrita etnográfica. Para tanto, o artigo revisa alguns dos pressupostos relacionados ao uso da noção de ontologia na teoria antropológica, tendo em vista discutir os dilemas relacionados à tradução das cópulas predicativas e suas consequências para a compreensão dos regimes xamanísticos de conhecimento, assentado em configurações virtuais.
D’a terra devastada à tempestade: José Paulo Moreira da Fonseca e a recepção poética de Eliot na lírica brasileira dos anos 1950
Authors: Camilo Vagner
Published: April 2018

O marco significativo da primeira recepção, entre nós, de T. S. Eliot, seja como crítico, seja como poeta, data da geração de 45. Este artigo examina um dos momentos representativos do diálogo intertextual, em particular, com The waste land (1922): trata-se do poema “A tempestade”, do poeta-pintor José Paulo Moreira da Fonseca (1922-2004). Em virtude de seu duplo e uno ofício, Fonseca estende, ainda, o diálogo, em seu poema, ao campo das artes plásticas, por meio da écfrase, especialmente com Giorgione e Velázquez.
Fora do que se acredita existir: a Terra em perspectiva multidimensional
Authors: Skafish Peter
Published: April 2018

O que devem os intelectuais pensar hoje das religiões loucas, “irracionais”? E de que maneira a antropologia se faz necessária para que se alcance essa compreensão? Aborda-se tais perguntas à luz do caso de Barbara Marciniak, outrora uma popular médium ou “canal” de espíritos ligada à Nova Era, considerando o que ela concebe como extraterrestres das Plêiades. A partir de uma análise de sua concepção de pensamento, opta-se por uma “antropologia de conceitos” que se concentra nas partes do pensamento de Marciniak que divergem do pensamento moderno.
Natureza incomum: histórias do antropo-cego
Authors: Cadena Marisol de la
Published: April 2018

O aumento do consumo de minerais e energia levou a uma destruição sem precedentes do que conhecemos como natureza e dos recursos a ela associados, geralmente localizados em territórios habitados por grupos indígenas que reagem politicamente a essa destruição, somando forças com movimentos que protestam contra a devastação do meio ambiente. Conceituando uma política radicalmente diferente como “natureza incomum”, a autora apresenta o que chama de “antropo-cego”: um processo de criação de mundo por meio do qual mundos heterogêneos que não se fazem com uma divisão entre humanos e não humanos são obrigados a operar com essa dist inção, ao mesmo tempo que a excedem.
Theodor W. Adorno on ‘Marx and the Basic Concepts of Sociological Theory’
Authors: Adorno Theodor W. , Erlenbusch-Anderson Verena , O’Kane Chris
Published: April 2018

The following is the transcript of a lecture taken in shorthand by Hans-Georg Backhaus. The transcript was originally published as an appendix in Hans-Georg Backhaus, Dialektik der Wertform. Untersuchungen zur marxschen Ökonomiekritik (Freiburg: ça ira, 1997), a complete translation of which is forthcoming in the Historical Materialism book series.
The Old Adam, After All
Authors: Thorne Christian
Published: April 2018

Hill and Montag’s The Other Adam Smith confirms many of the Left’s established positions on Adam Smith, but does so by framing the philosopher as a standard-bearer of the Scottish Enlightenment, and not just as an arch-capitalist and proto-Hayekian. The book makes a strong case, but also strong-arms its readers into choosing between the Scottish Enlighteners and the Spinozism that its authors prefer.
The advertisement calls of two species of Brachycephalus (Anura: Brachycephalidae) from southern Atlantic Forest, Brazil
Authors: MONTEIRO JULIANE PETRY DE CARLI , CONDEZ THAIS HELENA , GARCIA PAULO CHRISTIANO DE ANCHIETTA , HADDAD CÉLIO FERNANDO BAPTISTA
Published: April 2018

The advertisement calls are known for only eight species within the genus Brachycephalus. Herein, we describe the advertisement calls of B. olivaceus and B. quiririensis, both species from southern Atlantic Forest, state of Santa Catarina, Brazil. The advertisement calls of these species are similar, composed by one short and high-frequency note. The parameters range overlap between calls, as exemplified by the dominant frequency of 6.4–7.0 kHz in B. olivaceus and 6.2–6.5 kHz in B. quiririensis. Additionally, we provide a compilation of the available bioacoustic information for this genus.
Two new species and new records of Maruina Müller, 1895 (Diptera: Psychodidae) in Brazil
Authors: BRAVO FREDDY , ARAÚJO MAÍRA XAVIER
Published: April 2018

Two new species of Maruina, Maruina cirrata sp. nov. and Maruina mucugensis sp. nov., collected in two mountainous areas in Bahia, are described and figured. Additionally, we present new records of Maruina guria Bravo, 2004 and M. menina Bravo & Lago, 2003 in Brazil.
Paraindopamphantus bruneiensis gen. nov. et sp. nov., as the first representative of the subfamily Pamphantinae from South East Asia (Hemiptera: Heteroptera: Geocoridae: Pamphantinae: Indopamphantini)
Authors: MALIPATIL M. B. , SCUDDER G. G. E.
Published: April 2018

Paraindopamphantus gen. nov., containing one species, I. bruneiensis sp. nov., is reported from Brunei, as the first member of the subfamily Pamphantinae from South East Asia and the second from the Oriental Region. The strikingly myrmecomorphic P. bruneiensis, collected only from Bukit Sulang, nr Lamunin in Brunei in the canopy of Shorea johorensis Foxw. (Dipterocarpaceae) tree by insecticide fogging is described and illustrated. The genus is placed in tribe Indopamphantini, that at present contains only other genus Indopamphantus Malipatil recorded from the Western Ghats of India. The significance of the habitus and myrmecomorphy of this species, in relation to Indopamphantus makutaensis Malipatil, is discussed. A key to the two genera of Indopamphantini is provided.