bluuebunny/crossref_metadata_2025 huggingface dataset:
Participatory design methods for the development of a clinical telehealth service for neonatal homecare
Authors: Garne Holm Kristina , Brødsgaard Anne , Zachariassen Gitte , Smith Anthony C. , Clemensen Jane
Published: September 2017

Objectives:

Neonatal homecare delivered during home visits by neonatal nurses is a common method for supporting families of preterm infants following discharge. Telehealth has been introduced for the provision of neonatal homecare, resulting in positive feedback from parents of preterm infants. While the benefits are beginning to be realised, widespread uptake of telehealth has been limited due to a range of logistical challenges. Understanding user requirements is important when planning and developing a clinical telehealth service. We therefore used participatory design to develop a clinical telehealth service for neonatal homecare.

Methods:

The study adopted a participatory design approach to engage users in the development and design of a new telehealth service. Participatory design embraces qualitative research methods. Creative and technical workshops were conducted as part of the study. Tests of the telehealth service were conducted in the neonatal unit. Participants in this study were former and current parents of preterm infants eligible for neonatal homecare, and clinical staff (medical and nursing) from the neonatal unit. Preterm infants accompanied their parents.

Results:

Based on the results obtained during the workshops and subsequent testing, we developed an application (app), which was integrated into the medical record at the neonatal unit. The app was used to initiate videoconferences and chat messages between the family at home and the neonatal unit, and to share information regarding infant growth and well-being.

Conclusion:

Results obtained from the workshops and testing demonstrated the importance of involving users when developing new telehealth applications. The workshops helped identify the challenges associated with delivery of the service, and helped instruct the design of a new telehealth service for neonatal homecare based on the needs of parents and clinical staff.
Aortopexy for Life-Threatening Airway Obstruction Following Division of Double Aortic Arch
Authors: Hammond-Jack Katrina , Ramakrishnan Karthik Vaidyanathan , Nath Dilip S.
Published: September 2017

Symptoms of airway compression secondary to double aortic arch are relieved by division of one of the two aortic arches. However, in some cases inherent tracheomalacia and other factors may result in persistence of symptoms. We report one such occurrence in our experience and describe the use of aortopexy as a curative procedure to tackle this problem.
Ventricular Fibrillation and Myocardial Depression Following Pulmonary Valve Replacement in Tetralogy of Fallot With an Intramural Coronary Artery and Coronary Artery Compression by Chest Tube
Authors: Ahmed Mubbasheer , Thompson Nathan E. , Foerster Susan R. , Frommelt Michele A. , Mitchell Michael E. , Scott John P.
Published: September 2017

We describe the case of a 10-year-old male with a history of repaired Tetralogy of Fallot and known intramural right coronary artery (RCA) who presented for bioprosthetic pulmonary valve replacement. The operation was complicated by postoperative ventricular fibrillation arrest. Selective coronary angiography revealed external compression of the mid-RCA by a mediastinal chest tube that improved immediately upon removal of the tube. Ultimately, the patient required additional unroofing of the intramural coronary for full recovery. This case highlights the need to thoroughly investigate malignant ventricular dysrhythmias following pediatric cardiac surgery and to rule out coronary insufficiency, which may be due to both extrinsic and/or intrinsic lesions.
Color Stability of Tetric® N-Ceram Bulk Fill Restorative Composite Resin after Immersion in Different Drinks
Authors: Al-Abdullah Abdullah Saad , Al-Bounni Roula S. , Al-Omari Mohammad
Published: September 2017

Objective:

To evaluate the color stability of Tetric® N-Ceram Bulk Fill composite restorative material after immersion in three different (energy drink, protein supplement solution, and combination of energy drink and protein supplement solution) drinks.

Materials and Methods:

Composite resin disks, 2 mm in depth and 5 mm in diameter, were prepared from the Tetric® N-Ceram Bulk Fill composite restorative material. Specimens were tested after immersion and aging in energy drink (Red Bull) alone, protein supplement solution alone, and in combination with energy drink and protein supplement. Deionized water was used as a control group. Specimens were stored at room temperature of ±23°C for a period of one week in each drink. Color was assessed in the CIELAB using Color Eye 7000A Spectrophotometer. Color differences in different group specimens were measured. Mean values were statistically analyzed using one-way analysis of variance (ANOVA). Further Tukey’s multiple comparison tests were applied to know the differences between the group of specimens. A p value of p < 0.05 was set as significance level.

Results:

N-Ceram Bulk Fill composite showed Δ L, Δ a, Δ b, and Δ E mean and standard deviation values when immersed in deionized water (–2.6 ± 3.24, 0.16 ± 0.19, 0.32 ± 1.26, and 3.51 ± 2.47), energy drink (–4.19 ± 4.24, 0.21 ± 0.21, 1.57 ± 1.32, and 5.40 ± 3.11), protein supplement (62.71 ± 12.48, –2.63 ± 0.7, 7.7 ± 5.67, and 63.45 ± 12.56), combined energy drink and protein supplement (68.52 ± 13.43, –4.06 ± 1.73, 10.94 ± 5.31, and 69.71 ± 13.42), respectively. All the color coordinates (Δ L, Δ a, and Δ b) showed statistically significant difference, p < 0.001. The color change of N-Ceram Bulk Fill composite specimens Δ E occurred by immersion in energy drink, protein supplement solution, and combined solution of energy drink and protein supplement after seven days was found to be statistically significant p < 0.001.

Conclusion:

The study’s finding suggests that the energy drink (Red Bull), protein supplement (ISOPURE), and combined immersion in energy drink and protein supplements caused perceptible and clinically unacceptable color change in the Tetric® N-Ceram Bulk Fill composite material. This color change was remarkably high with a combined immersion in energy drink and protein supplement solution.
The Use of Fluorescein Angiography to Evaluate Pediatric Abusive Head Trauma: An Observational Case Series
Authors: Tran Kimberly D. , Ko Audrey C. , Read Sarah P. , Reyes-Capó Daniela , Negron Catherin I. , Fallas Brenda J. , Tutiven Jacqueline , Berrocal Audina M.
Published: September 2017

Background or Purpose:

The evaluation of retinal hemorrhages in the setting of suspected abusive head trauma (AHT) has important medical, social, and legal implications. Challenges include late presentation after retinal hemorrhages have resolved and differentiating AHT-related retinal changes from mimicking pathologies. To date, angiographic evidence of peripheral retinal injury in AHT has been reported in small series, but further study is needed to determine the prevalence and long-term sequelae of these findings. The purpose of this study was to describe fluorescein angiography (FA) findings in pediatric patients with a history of definite AHT and demonstrate the potential utility of FA in evaluating cases of suspected abuse with late presentation.

Methods:

Retrospective case series of 10 eyes in 5 pediatric patients with a history of definite AHT. RetCam fundus photography images and digital FA were performed.

Results:

Peripheral retinal nonperfusion affected 10 of 10 eyes in patients with a history of definite AHT. These changes persisted after acute retinal hemorrhages had resolved.

Conclusions:

“Retinal surveys” using FA provide angiographic evidence of peripheral retinal nonperfusion that may be a sign of AHT. This series adds to the growing body of cases reporting similar AHT-related findings and additionally demonstrates the longevity of these pathologic changes after trauma, which has not been previously described. Fluorescein angiography may offer a distinct advantage in evaluating cases of suspected abuse with late presentation to medical care when pathognomonic retinal hemorrhages may no longer be present. Further study is needed to determine the prevalence and long-term sequelae of these findings.
Cellubrevin/vesicle-associated membrane protein-3–mediated endocytosis and trafficking regulate platelet functions
Authors: Banerjee Meenakshi , Joshi Smita , Zhang Jinchao , Moncman Carole L. , Yadav Shilpi , Bouchard Beth A. , Storrie Brian , Whiteheart Sidney W.
Published: September 2017

Key Points

Platelet VAMP-3 mediates receptor-mediated endocytosis and endocytic trafficking of cargo. Platelet VAMP-3 regulates spreading, clot retraction, and TPOR/Janus kinase 2 signaling.
The risk of mycobacterial infections associated with inhaled corticosteroid use
Authors: Brode Sarah K. , Campitelli Michael A. , Kwong Jeffrey C. , Lu Hong , Marchand-Austin Alex , Gershon Andrea S. , Jamieson Frances B. , Marras Theodore K.
Published: September 2017

Inhaled corticosteroid (ICS) use is associated with an increased risk of pneumonia. This study was performed to determine if ICS use is associated with an increased risk of nontuberculous mycobacterial pulmonary disease (NTM-PD) or tuberculosis (TB).

We conducted a population-based nested case–control study using linked laboratory and health administrative databases in Ontario, Canada, including adults aged ≥66 years with treated obstructive lung disease (i.e.asthma, chronic obstructive pulmonary disease (COPD) or asthma–COPD overlap syndrome) between 2001 and 2013. We estimated odds ratios comparing ICS use with nonuse among NTM-PD and TB cases and controls using conditional logistic regression.

Among 417 494 older adults with treated obstructive lung disease, we identified 2966 cases of NTM-PD and 327 cases of TB. Current ICS use was associated with NTM-PD compared with nonuse (adjusted OR (aOR) 1.86, 95% CI 1.60–2.15) and was statistically significant for fluticasone (aOR 2.09, 95% CI 1.80–2.43), but not for budesonide (aOR 1.19, 95% CI 0.97–1.45). There was a strong dose–response relationship between incident NTM-PD and cumulative ICS dose over 1 year. There was no significant association between current ICS use and TB (aOR 1.43, 95% CI 0.95–2.16).

This study suggests that ICS use is associated with an increased risk of NTM-PD, but not TB.
Spatial analysis of cluster randomised trials: a systematic review of analysis methods
Authors: Jarvis Christopher , Di Tanna Gian Luca , Lewis Daniel , Alexander Neal , Edmunds W. John
Published: September 2017

Background

Cluster randomised trials (CRTs) often use geographical areas as the unit of randomisation, however explicit consideration of the location and spatial distribution of observations is rare. In many trials, the location of participants will have little importance, however in some, especially against infectious diseases, spillover effects due to participants being located close together may affect trial results. This review aims to identify spatial analysis methods used in CRTs and improve understanding of the impact of spatial effects on trial results.

Methods

A systematic review of CRTs containing spatial methods, defined as a method that accounts for the structure, location, or relative distances between observations. We searched three sources: Ovid/Medline, Pubmed, and Web of Science databases. Spatial methods were categorised and details of the impact of spatial effects on trial results recorded.

Results

We identified ten papers which met the inclusion criteria, comprising thirteen trials. We found that existing approaches fell into two categories; spatial variables and spatial modelling. The spatial variable approach was most common and involved standard statistical analysis of distance measurements. Spatial modelling is a more sophisticated approach which incorporates the spatial structure of the data within a random effects model. Studies tended to demonstrate the importance of accounting for location and distribution of observations in estimating unbiased effects.

Conclusions

There have been a few attempts to control and estimate spatial effects within the context of human CRTs, but our overall understanding is limited. Although spatial effects may bias trial results, their consideration was usually a supplementary, rather than primary analysis. Further work is required to evaluate and develop the spatial methodologies relevant to a range of CRTs.
Medium-term results following arthroscopic reduction in walking-age children with developmental hip dysplasia after failed closed reduction
Authors: Zhao Liang , Yan Hua , Yang Changsheng , Cai Daozhang , Wang Yijun
Published: September 2017

Background

Arthroscopic reduction has become increasingly popular as an alternative to open reduction for the treatment of developmental dysplasia of the hip (DDH). However, patient outcomes beyond one and a half years after surgery remain unclear. The purpose of this study is to report the medium-term outcomes of walking-age patients who received arthroscopic reduction after an unsuccessful closed reduction. This research was conducted as part of a retrospectively registered study.

Methods

We performed arthroscopic reduction in eight children with DDH after failed closed reduction between January 2010 and January 2012 and followed all cases for a minimum of 5 years. Arthroscopic reduction was performed using a two-portal approach without traction. Capsular release and resection of the transverse acetabular ligament were also performed if needed. Patient demographics, clinical variables, anatomical assessment measures, and post-operative complications were extracted from medical records.

Results

We treated five male and three female patients with an average age at operation of 15.6 months (range, 12 to 22 months). All obstacles to reduction were corrected arthroscopically. Concentric reduction of the hip joint was observed in post-operative X-rays in all cases. The average safe zone was increased from 17.5° (8° to 30°) to 42.1° (36° to 50°) after the operation. The average acetabular (AC) index was reduced from 40.3° (33° to 65°) to 21.9° (19° to 26°) at the end of follow-up. No complications occurred and no patients developed necrosis of the femoral head, recurrent dislocation, or residual hip dysplasia.

Conclusions

Arthroscopic reduction is a suitable surgical procedure for the treatment of DDH among walking-age children with failed closed reduction and severe dislocation. This method is quick and safe, and it can be performed without post-operative complications over the medium term.
Draft genome sequence of Dethiobacter alkaliphilus strain AHT1T, a gram-positive sulfidogenic polyextremophile
Authors: Melton Emily Denise , Sorokin Dimitry Y. , Overmars Lex , Lapidus Alla L. , Pillay Manoj , Ivanova Natalia , del Rio Tijana Glavina , Kyrpides Nikos C. , Woyke Tanja , Muyzer Gerard
Published: September 2017

Dethiobacter alkaliphilus strain AHT1T is an anaerobic, sulfidogenic, moderately salt-tolerant alkaliphilic chemolithotroph isolated from hypersaline soda lake sediments in northeastern Mongolia. It is a Gram-positive bacterium with low GC content, within the phylum Firmicutes. Here we report its draft genome sequence, which consists of 34 contigs with a total sequence length of 3.12 Mbp. D. alkaliphilus strain AHT1T was sequenced by the Joint Genome Institute (JGI) as part of the Community Science Program due to its relevance to bioremediation and biotechnological applications.
Minimal Residual Disease Assessment in Lymphoma: Methods and Applications
Authors: Herrera Alex F. , Armand Philippe
Published: September 2017

Standard methods for disease response assessment in patients with lymphoma, including positron emission tomography and computed tomography scans, are imperfect. In other hematologic malignancies, particularly leukemias, the ability to detect minimal residual disease (MRD) is increasingly influencing treatment paradigms. However, in many subtypes of lymphoma, the application of MRD assessment techniques, like flow cytometry or polymerase chain reaction–based methods, has been challenging because of the absence of readily detected circulating disease or canonic chromosomal translocations. Newer MRD detection methods that use next-generation sequencing have yielded promising results in a number of lymphoma subtypes, fueling the hope that MRD detection may soon be applicable in clinical practice for most patients with lymphoma. MRD assessment can provide real-time information about tumor burden and response to therapy, noninvasive genomic profiling, and monitoring of clonal dynamics, allowing for many possible applications that could significantly affect the care of patients with lymphoma. Further validation of MRD assessment methods, including the incorporation of MRD assessment into clinical trials in patients with lymphoma, will be critical to determine how best to deploy MRD testing in routine practice and whether MRD assessment can ultimately bring us closer to the goal of personalized lymphoma care. In this review article, we describe the methods available for detecting MRD in patients with lymphoma and their relative advantages and disadvantages. We discuss preliminary results supporting the potential applications for MRD testing in the care of patients with lymphoma and strategies for including MRD assessment in lymphoma clinical trials.
lakemorpho: Calculating lake morphometry metrics in R
Authors: Hollister Jeffrey , Stachelek Joseph
Published: September 2017

Metrics describing the shape and size of lakes, known as lake morphometry metrics, are important for any limnological study. In cases where a lake has long been the subject of study these data are often already collected and are openly available. Many other lakes have these data collected, but access is challenging as it is often stored on individual computers (or worse, in filing cabinets) and is available only to the primary investigators. The vast majority of lakes fall into a third category in which the data are not available. This makes broad scale modelling of lake ecology a challenge as some of the key information about in-lake processes are unavailable. While this valuablein situinformation may be difficult to obtain, several national datasets exist that may be used to model and estimate lake morphometry. In particular, digital elevation models and hydrography have been shown to be predictive of several lake morphometry metrics. The R packagelakemorphohas been developed to utilize these data and estimate the following morphometry metrics: surface area, shoreline length, major axis length, minor axis length, major and minor axis length ratio, shoreline development, maximum depth, mean depth, volume, maximum lake length, mean lake width, maximum lake width, and fetch. In this software tool article we describe the motivation behind developinglakemorpho, discuss the implementation in R, and describe the use oflakemorphowith an example of a typical use case.
Accounting Policy and Its Role in the Organization of Reliable Accounting in the Enterprise
Authors: Чайковская Любовь , Chaykovskaya L. , Гарнов Андрей , Garnov Andrey
Published: September 2017

The article is devoted to the organization of accounting on the basis of properly formulated accounting policy for both accounting and taxation purposes and management accounting. It is noted that the need for accounting policy is due to the fact that the state in a market economy can not recommend different accounting schemes to different enterprises, since the operating conditions and tasks of each enterprise have differences. In conclusion, it was concluded that the formation of accounting policy is an essential element of the organization of different types of accounting at enterprises and can be an effective tool for managing indicators that characterize the financial condition of the enterprise.
The Capitalist Way of the Russian Economy: Institutional Approach
Authors: Осипов В. , Osipov V.
Published: September 2017

Based on the methodology of the South Korean scientist Un The Pack, it is shown that it is possible to assess the quality of the institutional environment in Russia for doing business, and also describes the quality of public administration at the present stage. Specific examples show how decisions of public authorities can have a negative impact on business activity.
A patient's experience of stoma reversal surgery
Authors: Hill Susannah
Published: September 2017

Susannah Hill Discusses the challenges faced by patients undergoing stoma reversal and what stoma care nurses may be able to do to help
Identification, assessment and management of breast oedema after treatment for cancer
Authors: Todd Marie
Published: September 2017

Advances in breast cancer management, including breast-conserving surgery, have resulted in an increase in the incidence of breast oedema. However, this is addressed by professionals less often than arm lymphoedema. Breast oedema results in significant physical and psychological morbidity, makes finding a comfortably fitting bra very difficult, and can act as a reminder of the initial breast cancer diagnosis. Psychological difficulties can be compounded by clinicians' failure to acknowledge the impact. Assessing and managing breast oedema requires a sensitive, skilled approach to ensure all the relevant issues are identified and addressed in a comprehensive care plan; taking time to listen to patients and acknowledging the impact can be very therapeutic. The principles of managing breast oedema are based on lymphoedema practice, particularly manual lymphatic drainage and kinesio taping. This article gives an overview of the identification, assessment and management of breast oedema following treatment of cancer.
Politics and palliative care: Benin
Authors: Smyth Dion
Published: September 2017

Dion Smyth's review of palliative nursing on the internet
Vaginal dryness and menopause symptoms and therapies
Authors: Abernethy Kathy
Published: September 2017

Vaginal dryness is a common symptom experienced by women post menopause, writes Kathy Abernethy
Performance of Soil Termiticides in Open Field and Under Roof Overhang
Authors: Acda Menandro N
Published: September 2017

The study investigated the difference in performance of termiticides using concrete slab test installed in open field and under roof overhang.  Soil treated with cypermethrin and chlorpyrifos under roof overhang showed lower percentage of termite penetration compared to those in open field in each year of evaluation.  However, in both conditions termites were already able to penetrate treated plots during the first year of trial.  The high percentage of plots attacked by termites could be attributed to several environmental factors such as presence of a wider diversity of termite species, moisture, temperature, soil properties, microbial communities, etc. common in tropical climates.  The results from these two modes of installation could affect protocol used for field trial and the granting of registration or performance warranty to candidate termiticides in tropical countries.
Male Orchid Bees (Hymenoptera: Apidae: Euglossini) in Canopy and Understory of Amazon Várzea Floodplain Forest. I. Microclimatic, Seasonal and Faunal Aspects
Authors: Vilhena Patricia Dos Santos
Published: September 2017

Várzea floodplain forests are important ecosystems of the Amazon basin. Our goal was to verify whether orchid bee males have stratum preference in a forest with a dynamic understory. Traps were placed at 25 m and 1.5 m with aromatic scents to lure the bees. Data loggers were used to register temperature and relative humidity in both heights. Of 835 sampled males belonging to 28 species, 645 males from 23 species were collected at the understory. Temperature was 1.4º C higher at the canopy and relative humidity was 11.58% higher at the understory. Temperature, relative humidity, wind and tidal levels were the most important abiotic variables influencing mainly the canopy assemblage. The understory is a more stable environment, presenting good conditions to survival of the males. The species Euglossa cognata Moure, Eulaema meriana Olivier and Euglossa ignita Smith were closely related to strata and seasons.
The Orchid Bee Communities in different phytophysiognomies in the Atlantic Forest: from lowland to montane rainforests
Authors: Aguiar Willian Moura , Medeiros Renata Lee dos Santos , Aguiar Candida Maria Lima , Borges Isaura Gabriela Mendonça
Published: September 2017

To investigate species composition, diversity, richness, and monthly abundance of orchid bees in different types of dense rainforest, placed in different altitudes, the orchid bees were collected for 11 months in three vegetation types: dense montane ombrophilous forest (DMOF), dense submontane ombrophilous forest (DSOF, with two sites points), and dense lowland ombrophilous forest (DLOF). Were collected 1,945 males of 20 species using aromatic traps. The DMOF showed the highest species richness (19), and diversity (H’ = 2.42) , whereas the DSOF_1 showed the highest abundance (775). Euglossa cordata (Linnaeus) was the most abundant species in three areas, and Euglossa ignita Smith was the most abundant species in the DSOF_2 . Abiotic factors were correlated with some community parameters. Our study reveals the importance of preserving different phytophysiognomies within the same biome to conserve orchid bees.
Effects of Sublethal Concentrations of Chlorpyrifos on Olfactory Learning and Memory Performances in Two Bee Species, Apis mellifera and Apis cerana
Authors: Li Zhiguo , Li Meng , Huang Jingnan , Ma Changsheng , Xiao Linchen , Huang Qiang , Zhao Yazhou , Nie Hongyi , Su Songkun
Published: September 2017

Chlorpyrifos is a widely used organophosphorus insecticide. The acute oral 24 h median lethal dose (LD50) value of chlorpyrifos in Apis mellifera and in Apis cerana was estimated to assess differential acute chlorpyrifos toxicity in the two bee species. The LD50 values of chlorpyrifos in A. mellifera and in A. cerana are 103.4 ng/bee and 81.8 ng/bee, respectively, which suggests A. cerana bees are slightly more sensitive than A. mellifera bees to the toxicity of chlorpyrifos. Doses half the acute LD50 of chlorpyrifos were selected to study behavioral changes in the two bee species using proboscis extension response assay. A. mellifera foragers treated with chlorpyrifos showed significantly lower response to the 10% sucrose solution compared to control bees after 2, 24 and 48 h. Chlorpyrifos significantly impaired the olfactory learning abilities and 2 h memory retention of forager bees regardless of honey bee species, which may affect the foraging success of bees exposed to chlorpyrifos.
A preliminary list of the Ant Fauna in Northeastern Sahara of Algeria (Hymenoptera: Formicidae)
Authors: Chemala Abdellatif , Benhamacha Mounira , OULD El HADJ Mohamed Didi , Marniche Faiza , Daoudi Samia
Published: September 2017

We present here a preliminary list of ant fauna of some study sites in thenortheastern Sahara of Algeria using two methodologies, quadrat andpitfall traps (Barber-pots) methods. This work was conducted in wild andagricultural ecosystems in the basin of Ouargla, El-Oued region and Djamaaregion. We record a total of 26 species of 12 genera belonging to threesubfamilies Dolichoderinae, Formicinae, and Myrmicinae. Species of theMyrmicinae and Formicinae were the most abundant with 62.96% and29.63% respectively. The most diverse genus was Monomorium Mayr, 1855(6 species), followed by Messor Forel, 1890 (5). The highest diversity of antswas in Djamaa region (24 species), followed by Ouargla (18) and El-Oued(13). Moreover, this work shows the first record of the species Strumigenysmembranifera Emery, 1869 for the Country. Finally, we observed a variationin the distribution of ant species between study sites, for why, ecologicaldeterminants such as soil need to be studied deeply to explain their influenceon the repartition and richness of the Saharan myrmycofauna of Algeria.
A political history of visual display
Authors: Krogstad Anne
Published: September 2017

Visual presentations of political leaders have a long tradition. They convey information about who a politician is and – to a certain degree – his or her political positions. As studiously crafted displays of ideals, such images may also enlarge, challenge, complete or be a substitute for qualities and values. These capacities make images effective tools of political persuasion. While not aiming at a comprehensive overview, this article tries to capture the visual mode of political communication by studying how the portrayal of politicians provides the public with knowledge about the world of politics during different information eras. The main question is how the development of new forms of media, each with individual possibilities and restrictions regarding display, access, reach and storage, facilitate specific forms of visual politics. Examples from each historical era are discussed. Central questions include what images are displayed, how are they displayed and with what media technology. Also examined are rhetorical functions, the images’ institutional anchorage and forms of interaction. Visual presentations of politicians are analysed in their face-to-face interaction with a public, as well as in sculptures, paintings, photographs, film, television and digital media. The examples range from the Greek agora, where citizens could assemble and be taken in ‘at a single view’, to the Nordic prime ministers’ profile pictures on Facebook.
Geosynthetics reinforced flexible pavement: review of laboratory model studies
Authors: Ingle Ganesh , Bhosale S.S.
Published: September 2017

Number of laboratory studies; have shown that geosynthetics reinforcement improves the performance of flexible pavement either by ex-tending the service life or by savings in base course thickness. In spite of the good laboratory evidence for the geosynthetics reinforced flexible pavement, the mechanism that enables and governs the reinforcement function is still unclear [1]. Cyclic laboratory test has been one of the ways, used for assessing/evaluating the soil-geosynthetic interaction mechanisms. In such a tests contribution of geosynthetics prop-erties, interface shear provided by geotextiles and interlocking provided by geogrids when used under or within the base course of flexible pavement are mainly concentrated. This paper reviews literature of laboratory model studies carried out by various researchers over the globe. This review indicates that, appreciable improvement due to geosynthetics reinforcement depends upon various factors viz. location of geosynthetics, geogrid aperture size, geosynthetics properties, mainly stiffness, variation of base course thickness and strength of subgrade soil. The findings of these laboratory studies are also correlated with the same nature of field studies finding.
Componentes agronômicos qualitativos e caracterização morfológica de variedades de mandioca (Manihot esculenta Crantz) em seis épocas de colheita
Authors: Silva Soares Maurício Robério , Mendonça do Nascimento Rosane do , Silveira Viana Anselmo Eloy , Cardoso Adriana Dias , Magalhães Braga Gilmara Carvalho , Fogaça Júnior Josué Novaes Ladeia
Published: September 2017

Com o objetivo de avaliar componentes agronômicos qualitativos e caracterizar morfologicamente variedades de mandioca em função da época de colheita, conduziu-se o experimento na Universidade Estadual do Sudoeste da Bahia, campus de Vitória da Conquista- BA. O delineamento experimental utilizado foi o de blocos ao acaso, com 3 repetições, e os tratamentos arranjados segundo o esquema de parcelas subdivididas, com cinco variedades (Sergipe, Caitité, Platinão, Roxinha e Pão da China) nas parcelas e seis épocas de colheita nas subparcelas (270, 330, 390, 450, 510 e 570 dias após o plantio). Foram avaliadas: altura de plantas, diâmetro de caule, área foliar total e índice de área foliar. Além disso, foi feita a caracterização morfológica das plantas.  Os genótipos apresentaram comportamento diferenciado para a característica altura de plantas, a variedade Roxinha foi superior até 450 dias após o plantio, sendo que aos 510 e 570 dias, a variedade Caitité foi superior. Os genótipos Pão da China, Platinão e Sergipe apresentaram maior diâmetro de caule que a variedade Caitité, sem diferenças entre épocas. Para as características índice de área foliar e área foliar total, houve redução dos índices na sexta colheita, devido a fatores climáticos no período. A variedade Sergipe apresentou a maior retenção foliar. Na caracterização morfológica dos genótipos, notou-se diferenças entre os materiais e características estudadas.
Método Aplicado vs. Direto: dimensionamento de um sistema de distribuição de ar para instalações HVAC
Authors: Pereira Bruno Eli Alves , Rebelato Marcos Müller , Velasques Guilherme Simões , Porte Anderson Favero , Galarça Marcelo Moraes
Published: September 2017

O presente trabalho aborda o processo de dimensionamento de dutos para distribuição de ar em sistemas de ventilação e/ou climatização. São comparadas duas formas de se efetuar o dimensionamento: na primeira, pela utilização de dados em tabelas e gráficos construídos a partir de experimentos empíricos; em outra, a partir da solução das equações fundamentadas na mecânica dos fluidos e correlações empíricas. Neste trabalho as abordagens em relação aos dois procedimentos de cálculo para dimensionamento são definidas como Método Aplicado e Método Direto, respectivamente. As duas formas de solução são aplicadas aos três principais métodos de dimensionamento de sistema de dutos: velocidade arbitrária, perda de carga constante e recuperação da pressão estática. O dimensionamento é feito para um sistema de dutos hipotético. São avaliados o comportamento da perda de carga para cada um dos métodos de dimensionamento e procedimento de solução, bem como as dimensões finais do sistema de dutos. Os resultados mostram desvios percentuais pouco significativos, em termos absolutos, em relação aos procedimentos de solução adotados.
A aplicação da técnica multivariada (PCA e HCA) em dados microbiológicos e físico-químicos de méis comercializados em Cachoeira do Ararí e Salvaterra - PA
Authors: Gomes Paulo Weslem Portal , Reis José Diogo Evangelista , Silva Diana do Socorro Câmara , Costa Ana Paula Alves da , Malato Bettina Valda , Muribeca Abraão de Jesus Barbosa , Gomes Paulo Wender Portal
Published: September 2017

O mel é rico em monossacarídeos de glicose e frutose e vem sendo cada vez mais utilizado como alimento, medicamento e conservantes; tornando-se necessário definir padrões de qualidade para este produto. O presente trabalho investigou o perfil microbiológico e físico-químico de méis dos municípios de Cachoeira do Ararí, e Salvaterra - PA, afim de padronizar os dados através dos testes de componentes principais e de agrupamentos. Foram analisadas dez amostras, obtendo-se os valores médios para cinzas (0,38%), acidez livre (28,77 meq.kg-1), umidade (22,25%) e cor com predominante âmbar-escuro (60%). Para bolores e leveduras, 20% das amostras estavam em acordo com a legislação nacional. A aplicação da técnica multivariada (PCA) aos parâmetros físico-químicos teve variância total 87,73%, onde CP1 apresentou forte influência entre os parâmetros cor e cinzas e a CP2 expressou correlações entre acidez e umidade. Considerando a influência da discriminação geográfica dos municípios, a análise (HCA) apresentou dois grupos distintos por grau de similaridade, com a menor distância euclidiana para o grupo I. A aplicação da técnica multivariada (PCA) aos parâmetros microbiológicos demonstrou maior agrupamento para as amostras do município de Cachoeira do Ararí, comprovando a variância de 56,78% (CP1) de aspectos fidedignos de cada município. O dendograma (HCA) confirma os aspectos discutidos em scores e loadings. A partir desses resultados, percebe-se a importância das análises estatísticas para determinar padrões de qualidade do mel de regiões distintas, uma vez que vários fatores influenciam na obtenção e comercialização deste produto.
Química mineral dos granitos leucocráticos do Stock Lagoa de Dentro, Sul da Província Borborema, Nordeste do Brasil
Authors: Pereira Fábio Santos , Conceição Joane Almeida , Rosa Maria de Lourdes Silva , Conceição Herbet
Published: September 2017

Corpos leucograníticos relacionados ao Ciclo Brasiliano apresentam ampla distribuição no Sistema Orogênico Sergipano, localizado no setor extremo sul da Província Borborema. O Stock Lagoa de Dentro (SLD) é um representante desse magmatismo, que intrude as rochas metassupracrustais do Domínio Macururé, na porção centro-norte do estado de Sergipe. Trata-se de uma intrusão com cerca de 13 km2 de área aflorante, constituída por monzogranitos e álcali-feldspato granitos à duas micas. Neste artigo são apresentados e discutidos dados químicos dos principais minerais identificados nas rochas do SLD. Os feldspatos são homogêneos em composição e geralmente ocorrem como fases puras de ortoclásio (Or92-97) e albita (An1-7). A mica dioctaédrica possui composição intermediária entre muscovita e celadonita, dada pela substituição de VIAl por Fe+Mg nos sítios octaédricos, acompanhada pela substituição de IVAl por Si nas posições tetraédricas. A biotita é ferrosa e mostra sinais de reequilíbrio, refletindo variados graus de cloritização e oxidação observados nos estudos petrográficos. Em diagramas de associações magmáticas, a biotita exibe afinidade com as suítes graníticas peraluminosas e caráter transicional entre as séries Cálcio-Alcalina e Alumino-Potássica. O epídoto (Ps18-24) é aluminoso e ocorre como um mineral primário, cristalizado precocemente, e como produto de alteração hidrotermal de plagioclásio. A apatita corresponde a fluorapatita (FAp51-82) e o zircão possui assinatura de granitos anatéticos, derivados de fontes crustais (Zr/Hf~30). As composições da ilmenita mostram-se enriquecidas nas moléculas de pirofanita (Php3-14) e ecandrewsita (Ec1-20) e sugerem que o SLD se cristalizou a partir de um magma com baixa fugacidade de oxigênio.
On 2-Absorbing Primary Submodules of Modules over Commutative Rings
Authors: Mostafanasab Hojjat , Yetkin Ece , Tekir Ünsal , Yousefian Darani Ahmad
Published: September 2017

All rings are commutative with 1 ≠ 0, and all modules are unital. The purpose of this paper is to investigate the concept of 2-absorbing primary submodules generalizing 2-absorbing primary ideals of rings. Let M be an R-module. A proper submodule N of an R-module M is called a 2-absorbing primary submodule of M if whenever a; b ∈ R and m ∈ M and abm ∈ N, then am ∈ M-rad(N) or bm ∈ M-rad(N) or ab ∈(N :R M). It is shown that a proper submodule N of M is a 2-absorbing primary submodule if and only if whenever I1I2K ⊆ N for some ideals I1; I2 of R and some submodule K of M, then I1I2 ⊆ (N :R M) or I1K ⊆ M-rad(N) or I2K ⊆ M-rad(N). We prove that for a submodule N of an R-module M if M-rad(N) is a prime submodule of M, then N is a 2-absorbing primary submodule of M. If N is a 2-absorbing primary submodule of a finitely generated multiplication R-module M, then (N :R M) is a 2-absorbing primary ideal of R and M-rad(N) is a 2-absorbing submodule of M.
Positive solutions for semilinear elliptic systems with sign-changing potentials
Authors: Zeddini Noureddine , Ben Dkhil Adel
Published: September 2017

In this paper, we study the existence of positive solutions of the Dirichlet problem -Δu = λ p(x)f(u; v) ; -Δv = λ q(x)g(u; v); in D, and u = v = 0 on ∂∞D, where D ⊂ Rn (n ≥ 3) is an C1,1-domain with compact boundary and λ > 0. The potential functions p; q are not necessarily bounded, may change sign and the functions f; g : ℝ2 → ℝ are continuous with f(0; 0) > 0, g(0; 0) > 0. By applying the Leray- Schauder fixed point theorem, we establish the existence of positive solutions for λ sufficiently small.
Equivalence of Control Systems on the Pseudo-Orthogonal Group SO (2, 1)0
Authors: Biggs Rory , Remsing Claudiu C.
Published: September 2017

We consider left-invariant control affine systems on the matrix Lie group SO (2, 1)0. A classification, under state space equivalence, of all such full-rank control systems is obtained. First, we identify certain subsets on which the group of Lie algebra automorphisms act transitively. We then systematically identify equivalence class representatives (for single-input, two-input and three-input control systems). A brief comparison of these classification results with existing results concludes the paper.
On Normal Subgroups of Generalized Hecke Groups
Authors: Demir Bilal , Koruoğlu Özden , Sahin Recep
Published: September 2017

We consider the generalized Hecke groups Hp,q generated by X(z) = -(z -λp)-1, Y (z) = -(z +λq)-1 with and where 2 ≤ p ≤ q < ∞, p+q > 4. In this work we study the structure of genus 0 normal subgroups of generalized Hecke groups. We construct an interesting genus 0 subgroup called even subgroup, denoted by . We state the relation between commutator subgroup H′p,q of Hp,q defined in [1] and the even subgroup. Then we extend this result to extended generalized Hecke groups H̅p,q.
Study of Hilbert algebras in point of filters
Authors: Nasab Ali Soleimani , Saeid Arsham Borumand
Published: September 2017

The aim of this work is to introduce some types of filters in Hilbert algebras. Some theorems are stated and proved which determine the relationship between these notions and other filters of Hilbert algebra and by some examples we show that these concepts are different. The relationships between these filters and quotient algebras that are constructed via these filters are described.
Some bounds for the relative generalized Hamming weights of some evaluation codes
Authors: Sarabia Manuel González
Published: September 2017

In this paper we find some bounds for the relative generalized Hamming weights of some codes parameterized by a set of monomials of the same degree. Also we compare the relative generalized Hamming weights of the codes CX(d) and CX′(d) when X′ is embedded in X. We use these results to obtain some lower bounds for the relative generalized Hamming weights of the codes parameterized by the edges of any connected bipartite graph with bipartition (V1, V2) and where |V1| = n1, |V2| = n2, in terms of the relative generalized Hamming weights of the codes associated to the projective tori Tn₁-1 and Tn₂-1.
On the Kolmogorov forward equations within Caputo and Riemann-Liouville fractions derivatives
Authors: Alipour Mohsen , Baleanu Dumitru
Published: September 2017

In this work, we focus on the fractional versions of the well-known Kolmogorov forward equations. We consider the problem in two cases. In case 1, we apply the left Caputo fractional derivatives for α ∈ (0, 1] and in case 2, we use the right Riemann-Liouville fractional derivatives on R+, for α ∈ (1, +∞). The exact solutions are obtained for the both cases by Laplace transforms and stable subordinators.
On Generalized Jacobsthal and Jacobsthal-Lucas polynomials
Authors: Catarino Paula , Morgado Maria Luisa
Published: September 2017

In this paper we introduce a generalized Jacobsthal and Jacobsthal-Lucas polynomials, Jh,n and jh,n, respectively, that consist on an extension of Jacobsthal's polynomials Jn(𝑥) and Jacobsthal-Lucas polynomials jn(𝑥). We provide their properties and a generalization of the usual identities. We also present, for each one of these generalized polynomials, their ordinary generating functions and matrices. In the last part of the paper, we present some special kind of tridiagonal matrices whose entries are elements of these generalized polynomials.
HX-groups and Hypergroups
Authors: Corsini Piergiulio
Published: September 2017

One considers the hypergroups associated with the HX-groups Z=nZ and with the set of square matrices of order 2, with coefficients in Z=2Z and one calculates their fuzzy grade.
From lattices to Hv-matrices
Authors: Křehlík Štěpán , Novák Michal
Published: September 2017

In this paper we study the concept of sets of elements, related to results of an associative binary operation. We discuss this issue in the context of matrices and lattices. First of all, we define hyperoperations similar to those used when constructing hyperstructures from quasi-ordered semigroups. This then enables us to show that if entries of matrices are elements of lattices, these considerations provide a natural link between matrices, some basic concepts of the hyperstructure theory including Hv-rings and Hv-matrices and also one recent construction of hyperstructures.
Weighted differentiation composition operators from the logarithmic Bloch space to the weighted-type space
Authors: Li Songxiao , Stević Stevo
Published: September 2017

The boundedness of the weighted differentiation composition opera- tor from the logarithmic Bloch space to the weighted-type space is characterized in terms of the sequence (zn)n∈N0. An asymptotic estimate of the essential norm of the operator is also given in terms of the sequence, which gives a characterization for the compactness of the operator.
Modeling a fuzzy system for assisting the customer targeting decisions in retail companies
Authors: Micu Angela-Eliza
Published: September 2017

This paper reveals a proposal of a decision support system, enabling retail companies' marketing managers with powerful tools for the customers' portfolios targeting. The innovative methodological approach highlights a fuzzy algorithm based system that captures and computes relevant information about customers, providing a managerial support for making the most effective decisions, according to different degrees of affiliation assigned to customers. The contributions of fuzzy algorithms on targeting decisions reflects the affiliation of customers to a specific cluster, based on computation of the input vectors, income and seniority, leading to performing marketing decisions.
Another approach to the evaluation of a certain multivariate compound distribution
Authors: Robe-Voinea Elena-Gratiela , Vernic Raluca
Published: September 2017

In this work, we consider the multivariate aggregate model introduced in [11], model that takes into account the case when different types of claims affect in the same time an insurance portfolio under some specific assumptions related to the number of claims. For the probability function of the corresponding multivariate compound distribution, [11] obtained an exact recursive formula proved using the properties of the probability generating function. In this paper, we present a new shorter proof of the same formula that we also extend to a new form. Moreover, we present an alternative approximate method to evaluate the compound distribution based on the Fourier transform, and we compare both methods on a numerical example.
Image Restoration using a Nonlinear Second-order Parabolic PDE-based Scheme
Authors: Barbu Tudor , Moroşanu Costică
Published: September 2017

A novel anisotropic diffusion-based image denoising and restoration approach is proposed in this paper. A variational model for image restoration is introduced first, then the corresponding Euler-Lagrange equation being determined. A nonlinear parabolic PDE model is then obtained from this equation. It is based on a novel edge-stopping function and conductance parameter. A serious mathematical treatment is performed on this second-order anisotropic diffusion scheme, its well-possedness being investigated. Then, a consistent explicit numerical approximation scheme based on the finite difference method is developed for the proposed PDE model.
Walrasian economy and some properties of convexly compact sets
Authors: Cristea Mirela , Dascălu Doina , Nasta Laura Nicoleta
Published: September 2017

G. Žitković defined the notion of a convexly compact set in a topological space and, among other things, used it to give an extension of the Walrasian excess-demand theorem. We continue the study of convexly compactness in LCS spaces and prove a Krein-Milman theorem in this setting.