bluuebunny/crossref_metadata_2025 huggingface dataset:
Development and Validation of an HPLC-ELSD Method for the Quantification of 1-Triacontanol in Solid and Liquid Samples
Authors: Sut Stefania , Franceschi Clizia , Peron Gregorio , Poloniato Gabriele , Dall’Acqua Stefano
Published: October 2018

1-Triacontanol (TRIA) is gaining a lot of interest in agricultural practice due to its use as bio-stimulant and different types of TRIA-containing products have been presented on the market. Up to date, TRIA determination is performed by GC analysis after chemical derivatization, but in aqueous samples containing low amounts of TRIA determination can be problematic and the derivatization step can be troublesome. Hence, there is the need for an analysis method without derivatization. TRIA-based products are in general plant extracts that can be obtained with different extraction procedures. These products can contain different ranges of concentration of TRIA from units to thousands of mg/kg. Thus, there is the need for a method that can be applied to different sample matrices like plant materials and different plant extracts. In this paper we present a HPLC-ELSD method for the analysis of TRIA without derivatization. The method has been fully validated and it has been tested analyzing the content of TRIA in different dried vegetal matrices, plant extracts, and products. The method is characterized by high sensitivity (LOD = 0.2 mg/L, LOQ = 0.6 mg/L) and good precision (intra-day: <11.2%, inter-day: 10.2%) being suitable for routine analysis of this fatty alcohol both for quality control or research purposes.
Optimisation of Milk Protein Top-Down Sequencing Using In-Source Collision-Induced Dissociation in the Maxis Quadrupole Time-of-Flight Mass Spectrometer
Authors: Vincent Delphine , Mertens Dominik , Rochfort Simone
Published: October 2018

Top-down sequencing in proteomics has come of age owing to continuous progress in LC-MS. With their high resolution and broad mass range, Quadrupole Time-of-Flight (Q-ToF) hybrid mass spectrometers equipped with electrospray ionisation source and tandem MS capability by collision-induced dissociation (CID) can be employed to analyse intact proteins and retrieve primary sequence information. To our knowledge, top-down proteomics methods with Q-ToF have only been evaluated using samples of relatively low complexity. Furthermore, the in-source CID (IS-CID) capability of Q-ToF instruments has been under-utilised. This study aimed at optimising top-down sequencing of intact milk proteins to achieve the greatest sequence coverage possible from samples of increasing complexity, assessed using nine known proteins. Eleven MS/MS methods varying in their IS-CID and conventional CID parameters were tested on individual and mixed protein standards as well as raw milk samples. Top-down sequencing results from the nine most abundant proteoforms of caseins, alpha-lactalbumin and beta-lactoglubulins were compared. Nine MS/MS methods achieved more than 70% sequence coverage overall to distinguish between allelic proteoforms, varying only by one or two amino acids. The optimal methods utilised IS-CID at low energy. This experiment demonstrates the utility of Q-ToF systems for top-down proteomics and that IS-CID could be more frequently employed.
Immunomodulators Inspired by Nature: A Review on Curcumin and Echinacea
Authors: Catanzaro Michele , Corsini Emanuela , Rosini Michela , Racchi Marco , Lanni Cristina
Published: October 2018

The immune system is an efficient integrated network of cellular elements and chemicals developed to preserve the integrity of the organism against external insults and its correct functioning and balance are essential to avoid the occurrence of a great variety of disorders. To date, evidence from literature highlights an increase in immunological diseases and a great attention has been focused on the development of molecules able to modulate the immune response. There is an enormous global demand for new effective therapies and researchers are investigating new fields. One promising strategy is the use of herbal medicines as integrative, complementary and preventive therapy. The active components in medical plants have always been an important source of clinical therapeutics and the study of their molecular pharmacology is an enormous challenge since they offer a great chemical diversity with often multi-pharmacological activity. In this review, we mainly analysed the immunomodulatory/antinflammatory activity of Echinacea spp. and Curcuma longa, focusing on some issues of the phytochemical research and on new possible strategies to obtain novel agents to supplement the present therapies.
Panax notoginseng Saponins Protect Cerebral Microvascular Endothelial Cells against Oxygen-Glucose Deprivation/Reperfusion-Induced Barrier Dysfunction via Activation of PI3K/Akt/Nrf2 Antioxidant Signaling Pathway
Authors: Hu Shaonan , Wu Yali , Zhao Bo , Hu Haiyan , Zhu Baochen , Sun Zongxi , Li Pengyue , Du Shouying
Published: October 2018

Oxidative stress plays a critical role in cerebral ischemia/reperfusion (I/R)-induced blood-brain barrier (BBB) disruption. Panax notoginseng saponins (PNS) possess efficient antioxidant activity and have been used in the treatment of cerebral ischemic stroke in China. In this study, we determined the protective effects of PNS on BBB integrity and investigated the underlying mechanism in cerebral microvascular endothelial cells (bEnd.3) exposed to oxygen-glucose deprivation/reperfusion (OGD/R). MTT and LDH release assays revealed that PNS mitigated the OGD/R-induced cell injury in a dose-dependent manner. TEER and paracellular permeability assays demonstrated that PNS alleviated the OGD/R-caused disruption of BBB integrity. Fluorescence probe DCFH-DA showed that PNS suppressed ROS generation in OGD/R-treated cells. Immunofluorescence and western blot analysis indicated that PNS inhibited the degradation of tight junction proteins triggered by OGD/R. Moreover, mechanism investigations suggested that PNS increased the phosphorylation of Akt, the activity of nuclear Nrf2, and the expression of downstream antioxidant enzyme HO-1. All the effects of PNS could be reversed by co-treatment with PI3K inhibitor LY294002. Taken together, these observations suggest that PNS may act as an extrinsic regulator that activates Nrf2 antioxidant signaling depending on PI3K/Akt pathway and protects against OGD/R-induced BBB disruption in vitro.
Recent Advances in Indazole-Containing Derivatives: Synthesis and Biological Perspectives
Authors: Zhang Shu-Guang , Liang Chao-Gen , Zhang Wei-Hua
Published: October 2018

Indazole-containing derivatives represent one of the most important heterocycles in drug molecules. Diversely substituted indazole derivatives bear a variety of functional groups and display versatile biological activities; hence, they have gained considerable attention in the field of medicinal chemistry. This review aims to summarize the recent advances in various methods for the synthesis of indazole derivatives. The current developments in the biological activities of indazole-based compounds are also presented.
Optimization of Microwave-Assisted Extraction of Essential Oil from Vietnamese Basil (Ocimum basilicum L.) Using Response Surface Methodology
Authors: Tran Thien Hien , Nguyen Huynh Huu Hao , Nguyen Duy Chinh , Nguyen Thanh Quang , Tan Huynh , Nhan Le Thi Hong , Nguyen Dai Hai , Tran Lam Dai , Do Sy Trung , Nguyen Trinh Duy
Published: October 2018

Basil plant is a common source for linalool and estragole. However, it has been showed that the chemical composition of basil varies considerably depending on many factors including method of extraction, cultivar of the plant or geographical location. In this study, we attempted to extract essential oil from Vietnamese basil and analyze the chemical composition of the obtained oil using gas chromatography–mass spectrometry (GC-MS). The extraction method of choice was microwave-assisted hydro-distillation (MAHD) and the process was optimized with Response Surface Methodology (RSM) with regard to four experimental parameters including raw material size, raw material to water ratio, extraction time and microwave power. The results showed that ground basil leaves, when extracted with optimal conditions of water-to-material ratio of 3.2:1, extraction time of 97 (min) and microwave power of 430 (W), gave the actual essential oil yield of 0.6%. Regarding ANOVA results of the quadratic model, high determination coefficient (R2 = 0.9077), significant F-value of 10.92 and the p-value of less than 0.05 indicate that this model is significant between experimental and predicted variables, and should be fixed. In addition, GC-MS analysis revealed that major components of Vietnamese Basil were Estragole (87.869%), α-Bergamotene (2.922%), τ-Cadinol (2.770%), and Linalool (1.347%).
Decoding the Wickedness of Resource Nexus Problems—Examples from Water-Soil Nexus Problems in China
Authors: Kirschke Sabrina , Zhang Lulu , Meyer Kristin
Published: October 2018

Managing environmental resources in a nexus manner is typically denoted as a highly wicked problem. Such denotations are, however, barely based on clearly defined dimensions and degrees of wickedness. This hinders the application of effective policy and governance strategies to address nexus problems in practice. This study provides a conceptually thorough analysis of the wickedness of resource nexus problems, taking specific water-soil nexus problems in the Loess plateau in China as an example. Analyses are based on a clear operationalization of wicked problems, as provided in the literature on public policies, the nexus, and the case study area. Results show that resource nexus problems generally fulfill the theoretical criteria of wicked problems, namely the existence of highly conflicting goals, high system complexity, and high informational uncertainty. Consequently, traditional policy and governance strategies to address wicked problems such as participatory modes of governance may be fruitful in order to deal with resource nexus problems in general and in the Loess plateau, more particularly.
Estimating Calibration Variability in Evapotranspiration Derived from a Satellite-Based Energy Balance Model
Authors: Dhungel Sulochan , Barber Michael E.
Published: October 2018

Computing evapotranspiration (ET) with satellite-based energy balance models such as METRIC (Mapping EvapoTranspiration at high Resolution with Internalized Calibration) requires internal calibration of sensible heat flux using anchor pixels (“hot” and “cold” pixels). Despite the development of automated anchor pixel selection methods that classify a pool of candidate pixels using the amount of vegetation (normalized difference vegetation index, NDVI) and surface temperature (Ts), final pixel selection still relies heavily on operator experience. Yet, differences in final ET estimates resulting from subjectivity in selecting the final “hot” and “cold” pixel pair (from within the candidate pixel pool) have not yet been investigated. This is likely because surface properties of these candidate pixels, as quantified by NDVI and surface temperature, are generally assumed to have low variability that can be attributed to random noise. In this study, we test the assumption of low variability by first applying an automated calibration pixel selection process to 42 nearly cloud-free Landsat images of the San Joaquin area in California taken between 2013 and 2015. We then compute Ts (vertical near-surface temperature differences) vs. Ts relationships at all pixels that could potentially be used for model calibration in order to explore ET variance between the results from multiple calibration schemes where NDVI and Ts variability is intrinsically negligible. Our results show significant variability in ET (ranging from 5% to 20%) and a high—and statistically consistent—variability in dT values, indicating that there are additional surface properties affecting the calibration process not captured when using only NDVI and Ts. Our findings further highlight the potential for calibration improvements by showing that the dT vs. Ts calibration relationship between the cold anchor pixel (with lowest dT) and the hot anchor pixel (with highest dT) consistently provides the best daily ET estimates. This approach of quantifying ET variability based on candidate pixel selection and the accompanying results illustrate an approach to quantify the biases inadvertently introduced by user subjectivity and can be used to inform improvements on model usability and performance.
A Cooperative Communication Protocol for QoS Provisioning in IEEE 802.11p/Wave Vehicular Networks
Authors: Kim Jin-Woo , Kim Jae-Wan , Jeon Dong-Keun
Published: October 2018

Vehicular ad hoc networks (VANETs) provide information and entertainment to drivers for safe and enjoyable driving. Wireless Access in Vehicular Environments (WAVE) is designed for VANETs to provide services efficiently. In particular, infotainment services are crucial to leverage market penetration and deployment costs of the WAVE standard. However, a low presence of infrastructure results in a shadow zone on the road and a link disconnection. The link disconnection is an obstacle to providing safety and infotainment services and becomes an obstacle to the deployment of the WAVE standard. In this paper, we propose a cooperative communication protocol to reduce performance degradation due to frequent link disconnection in the road environment. The proposed protocol provides contention-free data delivery by the coordination of roadside units (RSUs) and can provide the network QoS. The proposed protocol is shown to enhance throughput and delay through the simulation.
An IHS-Based Pan-Sharpening Method for Spectral Fidelity Improvement Using Ripplet Transform and Compressed Sensing
Authors: Yang Chen , Zhan Qingming , Liu Huimin , Ma Ruiqi
Published: October 2018

Pan-sharpening aims at integrating spectral information from a multi-spectral (MS) image and spatial information from a panchromatic (PAN) image in a fused image with both high spectral and spatial resolutions. Numerous pan-sharpening methods are based on intensity-hue-saturation (IHS) transform, which may cause evident spectral distortion. To address this problem, an IHS-based pan-sharpening method using ripplet transform and compressed sensing is proposed. Firstly, the IHS transform is applied to the MS image to separate intensity components. Secondly, discrete ripplet transform (DRT) is implemented on the intensity component and the PAN image to obtain multi-scale sub-images. High-frequency sub-images are fused by a local variance algorithm and, for low-frequency sub-images, compressed sensing is introduced for the reconstruction of the intensity component so as to integrate the local information from both the intensity component and the PAN image. The specific fusion rule is defined by local difference. Finally, the inverse ripplet transform and inverse IHS transform are coupled to generate the pan-sharpened image. The proposed method is compared with five state-of-the-art pan-sharpening methods and also the Gram-Schmidt (GS) method through visual and quantitative analysis of WorldView-2, Pleiades and Triplesat datasets. The experimental results reveal that the proposed method achieves relatively higher spatial resolution and more desirable spectral fidelity.
A Study on the Design of Fog Computing Architecture Using Sensor Networks
Authors: Cha Hyun-Jong , Yang Ho-Kyung , Song You-Jin
Published: October 2018

It is expected that the number of devices connecting to the Internet-of-Things (IoT) will increase geometrically in the future, with improvement of their functions. Such devices may create a huge amount of data to be processed in a limited time. Under the IoT environment, data management should play the role of an intermediate level between objects and devices that generate data and applications that access to the data for analysis and the provision of services. IoT interactively connects all communication devices and allows global access to the data generated by a device. Fog computing manages data and computation at the edge of the network near an end user and provides new types of applications and services, with low latency, high frequency bandwidth and geographical distribution. In this paper, we propose a fog computing architecture for efficiently and reliably delivering IoT data to the corresponding IoT applications while ensuring time sensitivity. Based on fog computing, the proposed architecture provides efficient power management in IoT device communication between sensors and secure management of data to be decrypted based on user attributes. The functional effectiveness and the safe data management of the method proposed are compared through experiments.
Parametric Model for Window Design Based on Prospect-Refuge Measurement in Residential Environment
Authors: Hwang Ji Hyoun , Lee Hyunsoo
Published: October 2018

As the concept of prospect-refuge defines a preferred environment, the spatial elements that provide good conditions for the catalyst of the theory have been extensively studied. The well-known architectural element of this theory is the window that optimizes visual openness to outdoor or enclosure from outdoor. The aim of this paper is to develop a design method for prospect-refuge condition by adjusting window design attributes. A parametric design model that measures spatial conditions and presents design alternatives for the window is proposed in two major phases. First, this paper explains a parametric model to generate design alternatives for a window according to its size, aspect ratio, location, and shape. In the second phase, the parametric algorithm is defined for the measurement of prospect-refuge with 3D visibility. As a result, we explore the impact of window design variables on average visibility and difference visibility of prospect and refuge area. Using the parametric design technology, the proposed method presents analytical techniques, considering spatial characteristics.
Rainwater Harvesting as a Drinking Water Option for Mexico City
Authors: Gispert Mireya Ímaz , Hernández María Aurora Armienta , Climent Enrique Lomnitz , Flores María Fernanda Torregrosa
Published: October 2018

Mexico City is one of the most water-stressed cities in the world; poor quality water occurs in several parts of the City. The use of rainwater harvesting (RWH) as a source of drinking water is gaining acceptance in several contexts, but the quality of the water obtained through these systems has not been sufficiently studied. This manuscript presents the results of water quality tests from samples taken in each component of an RWH system, installed by Isla Urbana at the National Autonomous University of Mexico (UNAM), southern Mexico City. The RWH system culminates with a drinking fountain which supplies water for the students, and other members of the university community. Samples were retrieved from August 2014 to November 2015, approximately once per month. Results showed that with an adequate operation of the RWH system the major ions, fluoride, zinc, arsenic, lead, iron, copper, chromium, aluminum, nitrate, and total coliforms comply with national standards and international guidelines for drinking water. Thus, RWH constitutes a viable option for providing good quality water in a megacity that will become increasingly water-stressed due to climate change.
A Commentary on Sustainably Built Environments and Urban Growth Management
Authors: Wey Wann-Ming
Published: October 2018

The concept of urban growth management first emerged in the United States in the 1950s. Its goal was to solve problems stemming from urban sprawl by applying integrated planning, management, and regulation, and to adjust to different development trends in different spaces and times. From the viewpoint of the studies on the link between sustainably built environments, urban growth management, and their interactions, this special issue includes theoretical and empirical studies on sustainable built environment planning and design, sustainable growth management strategies, and other related emerging topics, such as intelligent use of information and communication technologies (ICT) to sustainably build environments, as well as smart cities research with big data, data mining, cloud computing, and internet of things (IOT) ideas.
Cation-apical oxygen vibrations in micas tetrahedra
Authors: Velde Bruce
Published: October 2018

Infrared spectra of synthetic micas indicate that the position of the a11 band which is in part due to the tetrahedral cation-apical oxygen stretching mode is a function of the substitution of ions in the tetrahedral layer only when Si-O is considered and it is a function of both tetrahedral and octahedral ion species when the Al-O stretch is considered. It is suggested that these observations are compatible with a molecular ionic structure for the Si-O planar network in micas.
Micas magmatiques et hydrothermaux dans l'environnement du porphyre cuprifère de Cerro Verde-Santa Rosa, Pérou
Authors: Le Bel Laurent
Published: October 2018

On a examiné en détail le chimisme (déterminé à la microsonde électronique) des biotites et des «séricites » de l'environnement du porphyre cuprifère de Cerro Verde. L'étude montre :

— que les teneurs en AlVI et Ti des biotites, tant magmatiques qu 'hydrothermales, sont corrélées avec les températures de cristallisation estimées par des méthodes indépendantes, tandis que les rapports Mg/Fe et Mg/(Mg + Fe) sont pratiquement invariants. Cette caractéristique est interprétée en terme de fO2 ;

— que les «séricites» sont plus précisément des phengites dont les taux de solubilité des constituants céladonite et paragonite sont fixés par une phase fluide dans des conditions P, T qu'il est possible d'évaluer.
Determination of Plasma Parameters in Radio Sources of Solar Zebra-patterns Based on Relations between the Zebra-stripe Frequencies and Gyro-harmonic Numbers
Authors: Karlický Marian , Yasnov Leonid V.
Published: October 2018

Solar radio zebras belong to the most important radio fine structures used in diagnostics of solar flare plasmas. In the present paper, assuming the double plasma-resonance model of zebras, we study the relation between zebra-stripe frequencies and gyro-harmonic numbers. We artificially generated two possible types of zebras: the zebra with Sequence A and Sequence B, where an increase of the zebra-stripe frequency corresponds to decrease or increase of the gyro-harmonic number. Analyzing these ideal zebras, we found that the frequency ratios of the neighboring zebra stripes increase in zebras with Sequence A and decrease in zebras with Sequence B. This criterion and corresponding diagrams were applied for nine observed zebras. All these zebras were found to be with Sequence A. Then we checked and confirmed these results by using the new numerical method, where the gyro-harmonic numbers of the zebra stripes with the lowest frequency s
1 were also determined. We found that in all these zebras, the spatial scale of the magnetic field in the zebra-stripe sources was always shorter than that of the plasma density. Knowing the gyro-harmonic numbers and corresponding zebra-stripe frequencies, we determined the magnetic field and plasma density in zebra sources to be 0.84–37.31 G and 0.026 × 1010–16.03 × 1010 cm−3, respectively. Finally, we found that with increasing the gyro-harmonic number s
1, the ratio of perpendicular and parallel scales of the magnetic field and plasma density in the zebra-stripe sources also increases.
Indicadores de produção científica e relação universidade-empresa em ciência e tecnologia de alimentos: o caso da Unicamp
Authors: De Souza André Luiz Gomes , Da Fonseca Laudelino Silva , Paixão Ana Eleonora Almeida , Da Silva Gabriel Francisco
Published: October 2018

Historicamente o papel das universidades sempre esteve associado à formação de recursos humanos e geração de conhecimento científico e tecnológico. Contudo, a partir do século XX tais instituições ampliaram seu escopo de atuação e passaram a atuar diretamente como agentes do sistema de inovação. Assim, o objetivo deste artigo foi analisar indicadores relacionados com Produção Científica, Propriedade Intelectual e Relação Universidade–Empresa (U-E) na área Ciência e Tecnologia de Alimentos (CTA) da Universidade Estadual de Campinas (UNICAMP). Inicialmente realizou-se o estudo comparativo dos indicadores de Produção Científica em CTA e identificou-se as principais Universidades Brasileiras no campo da CTA. Posteriormente, avaliou-se os indicadores de Propriedade Intelectual e os indicadores relacionados com Relação Universidade-Empresa da UNICAMP. Os resultados demonstram que a UNICAMP é a universidade brasileira com maior desempenho com relação à Produção Científica em CTA, apresentou considerável aumento no número Doutores e de Grupos de Pesquisa durante a última década, e que para cada Grupo de Pesquisa em CTA da UNICAMP existe 0,95 empresa atuando em parceria. No entanto, não foram verificados consideráveis incrementos nos indicadores de Propriedade Intelectual relacionados com Ciência e Tecnologia de Alimentos durante o período analisado.
Território Umutina: vivências e sustentabilidade
Authors: Boroponepa Monzilar Eliane
Published: October 2018

Este trabalho refere-se ao Território Umutina, aos desafios da sustentabilidade e às vivências recentes de jovens do Ensino Médio da Aldeia Umutina. O Território Umutina já está demarcado. A Terra Indígena Umutina possui grande importância para tal povo, pois é através dela que ele retira o sustento para a sua vivência e estabelece suas relações nas dimensões sociais e culturais. A terra, assim, é essencial para manter viva a cultura do povo Umutina. As técnicas utilizadas para a realização deste trabalho foram: pesquisa bibliográfica, dados coletados através de entrevistas com as lideranças e jovens da comunidade, oficinas, fotografia e a participação dos jovens da escola Jula Paré. Esta pesquisa-ação busca contribuir para que as gerações novas, a comunidade e a escola possam ter acesso aos conhecimentos tradicionais e aos saberes, valorizando o espaço territorial e a busca de alternativas dentro da comunidade; servirá ainda de registro e documento para as futuras gerações. Obteve-se dados que visam fortalecer a cultura e também servirão como material didático nas escolas indígenas, permitindo a socialização mais ampla ao público. Este trabalho visa, ainda, fortalecer e proteger o espaço territorial, bem como cultivar e manter viva a cultura para que os jovens possam usufruir desse patrimônio.
Ferramenta de auxílio à tomada de decisão para utilização de método não destrutivo em substituição de redes coletoras de esgoto
Authors: Smidarle Barbara Cristina
Published: October 2018

Este trabalho teve como objetivo construir uma ferramenta sustentável de auxílio à tomada de decisão para a substituição de redes coletoras de esgoto. O estudo foi desenvolvido em Curitiba (Brasil), onde foram avaliadas tecnologias não destrutivas em comparação ao método tradicional destrutivo. A ferramenta foi criada em ambiente Microsoft Excel®. A partir da inserção de determinadas variáveis pelo usuário, como características do local de aplicação, interferências existentes, tipo de solo, diâmetro da tubulação existente, são geradas respostas quanto ao atendimento à norma – vazão e declividade, custos para execução, potenciais impactos sociais e ambientais; e ao final, obtém-se um ranqueamento sustentável das tecnologias: aspectos econômicos, sociais e ambientais. O trabalho mostrou que a escolha do método para substituição das redes, quer seja destrutivo ou não, depende principalmente das características do terreno e da experiência do profissional avaliador.
A produção científica brasileira de teses e dissertações sobre health literacy
Authors: Rigolin Camila Carneiro Dias , Bastos Jr. José Carlos , Mello Lívia Coelho , Carvalho Carolina Cisoto Barbosa
Published: October 2018

O trabalho teve o objetivo de mapear a produção científica brasileira sobre health literacy, analisando cinquenta e nove teses e dissertações recuperadas em bibliotecas e catálogos digitais de acesso aberto. A bibliometria e a análise de conteúdo foram aplicados na coleta e sistematização de dados que resultaram nos seguintes indicadores: série temporal; distribuição geográfica; instituições e programa de pós-graduação; áreas; temática; gênero dos autores e orientadores. Destaca-se o caráter recente dos trabalhos e a predominância de estudos aplicados que avaliam os níveis de health literacy de indivíduos e grupos, que analisam o impacto da health literacy sobre programas e políticas de saúde ou que validam instrumentos de mensuração adaptados ao contexto brasileiro. Mais da metade dos trabalhos foi defendida em programas das áreas de Saúde Coletiva e Interdisciplinar. Há concentração de trabalhos na região sudeste e indícios de feminilização do campo de pesquisa, dada a presença majoritária de autoras e orientadoras do sexo feminino.
Novitates neocaledonicae X: A very rare and threatened new microendemic species of Acropogon (Malvaceae, Sterculioideae) from New Caledonia
Authors: Gâteblé Gildas , Munzinger Jérôme
Published: October 2018

A new species, Acropogonhorarius Gâteblé & Munzinger, sp. nov. (Malvaceae, Sterculioideae), is described from New Caledonia. It is known only from two very small subpopulations in the rainforests of the Petchécara Pass between Thio and Canala, in the southeast of Grande-Terre, New Caledonia’s main island. This shrub to small tree has hastate leaves and minute sessile tubular whitish-yellowish flowers and is strikingly different from all other members of the genus. The type locality is geologically complex and located within one of only four amphibolite lenses known in New Caledonia. A line drawing and colour photos are provided for the new species, along with a preliminary risk of extinction assessment, which indicates that the species is Critically Endangered.
A Linnaeus NG interactive key to the species of Glomera (Orchidaceae, Coelogyninae) from Southeast Asia
Authors: Wati Richa Kusuma , van Vugt Rogier R. , Gravendeel Barbara
Published: October 2018

We present a multilingual interactive key available online (http://glomera.linnaeus.naturalis.nl) that can be used on any web browser without the need for installing additional software. The key includes 169 species ofGlomera, a genus within the necklace orchids (Coelogyninae) not yet comprehensively treated in any recent field guide or web-based survey. With this key, plants can be identified using a combination of vegetative and floristic characters in addition to distribution and ecology as a first step to further taxonomic revisions. We urge anyone with an interest in wild orchids in Southeast Asia to contribute new observations to update current information on the distribution of these overlooked plants as a first step for a taxonomic revision and to gain more insight into their conservation status.
Les motivations et logiques de l’informalisation des entreprises formelles
Authors: Abaté André Modeste
Published: October 2018

L’objectif poursuivi par ce travail exploratoire est de mettre en évidence les motivations et les modalités des transitions des entreprises du formel vers l’informel. A partir de 10 entretiens auprès des entrepreneurs et experts du monde économique au Cameroun, les résultats révèlent que l’informalisation du formel comprend deux principales modalités : informalisation totale et informalisation partielle. Par ailleurs, les motivations et logiques d’informalisation sont associées aux conséquences de l’environnement institutionnel inadapté et injuste (logique d’adaptation), au calcul stratégique des entrepreneurs (logique de « for profit ») et à la reconversion à la suite des défaillances (logique de « no-profit »).
Peut-on parler de l’émergence d’un modèle rse africain : la situation du Sénégal ?
Authors: Diop Cheikh Mbacké , Ngaha Bah Angélique
Published: October 2018

Le papier est revenu sur l’origine de la RSE, son évolution théorique (selon Bowen) et conceptuelle avec les définitions de 2001 et 2012 de la Commission Européenne. Il s’en suit l’analyse des caractéristiques et des fondements des modèles européen et américain comme cadre d’analyse permettant de situer le modèle RSE sénégalais. La méthodologie retenue consiste à faire d’abord, une analyse documentaire sur les conventions, plans, programmes et ensuite, une étude quantitative sur 224 organisations (publiques, privées et à but non lucrative) avec un questionnaire standardisé du MAEP. L’exploitation des résultats souligne l’existence d’un cadrage institutionnel composé d’initiatives publiques et privées. Dans un autre registre, l’enquête révèle que plus de la moitié des entreprises se déploient pour les questions économiques sociales et environnementales de la RSE. À cet effet, nous croyons à l’existence d’un modèle de RSE proactif, émergent et reposant sur une base institutionnelle très fournie (accords et instruments publics, les initiatives privées). Il s’apparente plus au modèle européen.
La difficile unité d’une ETI composée de PME
Authors: Pierson Françoise , Rymeyko Karine
Published: October 2018

Cet article étudie l’intégration au sein d’une ETI constituée sous forme de groupe et composée de PME. Objet de transition entre la PME et la grande entreprise, une ETI dans une dynamique de croissance est amenée à racheter des PME et doit trouver une unité en son sein. Une étude de cas exploratoire menée au sein d’une des filiales nous conduit à constater que le poids de son contexte organisationnel représente un frein à la volonté d’intégration de l’ETI. Il apparaît également que l’intégration limitée est due à une incapacité du siège à dépasser le paradoxe du maintien d’une culture entrepreneuriale en son sein et d’une volonté de managérialisation. Les pratiques RH et les TIC utilisées comme leviers d’intégration par l’ETI ont ainsi peu d’influence sur les pratiques du site qui conserve, en partie, un fonctionnement autonome.
Consommation collaborative de la génération Y : une analyse par l’approche PLS
Authors: Ait Youssef Asmaa , Koubaa Salah , Benabdallah Mounia
Published: October 2018

La consommation collaborative, souvent associée à l’économie de partage, est un phénomène qui a connu un essor considérable avec l’âge d’Internet. Elle se déroule entre les pairs par l’intermédiaire de plateformes en ligne, et concernent des activités telles que l’échange des biens, la location, le prêt, etc. Ce papier explore, en s’appuyant théoriquement sur la théorie motivationnelle, les motivations des individus, notamment la génération Y, à participer à des pratiques de consommation collaborative. Pour ce faire, nous avons mené une analyse quantitative utilisant les données d’enquête (N = 100) recueillies auprès des étudiants de la Faculté des Sciences Juridiques Économiques et Sociales Ain Chock- Casablanca. Les résultats montrent que des facteurs intrinsèques (durabilité et jouissance) sont les principaux facteurs déterminants de l’attitude et de l’intention comportementale des individus.
La mise en place d’un système de contrôle de gestion stratégique dans les sociétés d’exercice libéral à responsabilité limitée de santé
Authors: Wangani Simon
Published: October 2018

Les sociétés d’exercice libéral à responsabilité limitée de santé sont des petites entreprises et requièrent des critères de gestion spécifiques, qui tiennent compte de la très grande diversité de ces entreprises. Cette spécificité résulte du caractère global du système de gestion, qui exige d’analyser ensemble les objectifs, l’environnement, l’organisation et les activités, en dégageant des concepts fondamentaux reliant ces éléments. Cet article analyse la problématique de la mise en place d’un système de contrôle de gestion stratégique dans les cabinets médicaux. L’objectif est d’étudier le rôle et l’impact de ce type de système dans la gestion des sociétés d’exercice libéral de santé. Pour étudier cette problématique, nous avons réalisé des entretiens auprès des cabinets médicaux.
Marraine Tendresse de l’Estrie (Québec)
Authors: Gagnon Aline
Published: October 2018

Offrir du répit à des mères de jeunes bébés, tel est le mandat de Marraine Tendresse, dans la région sherbrookoise (Québec). Depuis vingt-cinq ans, plus d’un millier de mères ont bénéficié des soins attentionnés offerts par des marraines bénévoles. L’essentiel du service repose sur l’ouverture à l’autre et le respect de ses valeurs, afin de favoriser la confiance nécessaire à la pratique du rôle parental.
Il est né prématurément… et toutes les questions parentales s’en trouvent revisitées
Authors: Vander Linden Reine
Published: October 2018

Toutes les naissances charrient des émotions nouvelles et déconcertantes. Mais quand des soucis médicaux se profilent (césarienne, prématurité…) la perception pour les parents, de leur capacité maternelle, et dans une moindre mesure paternelle, est souvent mise à mal et influence la construction du lien à l’enfant. Le soutien des professionnels est alors précieux, et même indispensable.
Blended Learning Innovation Model among College Students Based on Internet
Authors: Zhang Jia
Published: October 2018

In general, over 70% of students can adapt to this blended learning model after experiencing the blended learning model for some time, which can satisfy the in-dividual differences of students in a better way, attain some assistance from it and help to improve learning performance and learning ability. It can be discovered from this research that the blended learning model is superior to the single and traditional teaching mode or the pure network teaching mode in the aspects of in-spiring the learning interest of students, exercising self-management capability of students and self-evaluation ability. It can be seen from the specific situation of investigation data that it is feasible to implement the blended learning model in colleges and universities even though the overall level of students’ ability in the blended learning is low. As this is a preliminary investigation into the blended learning model, specific solutions or strategies have not been provided for some problems. However, it is believed to achieve greater effects if the research is con-tinued on the practice.
Application of Blockchain Technology in Online Education
Authors: Sun Han , Wang Xiaoyue , Wang Xinge
Published: October 2018

Blockchain is a data structure of data blocks arranged in chronological order. It is featured by decentralization, trustworthiness, data sharing, security, etc. It has been widely used in digital currency, smart contract, credit encryption and other fields. With the development of the Internet technology, online education, a novel education mode, has been greatly popularized. However, this education mode still faces many problems in course credibility, credit and certificate certification, stu-dent privacy, and course sharing. Through literature review and case analysis, this paper discusses the basic technical principles and application features of blockchain technology, and proposes a solution to the problems of online educa-tion based on blockchain technology. The blockchain technology can store learn-ing records in a trusted, distributed manner, provide credible digital certificates, realize learning resource sharing with smart contract, and protect intellectual property through data encryption. The research shows that the integration of blockchain technology is a promising trend in the development of online educa-tion.
Score Prediction Model of MOOCs Learners Based on Neural Network
Authors: Zhang Yuan , Jiang Wenbo
Published: October 2018

Through analyzing the behavior data of MOOCs learners, a MOOCs learner's score prediction model is constructed based on clustering algorithm and neural network in this paper. By using this model, we can find out the neglected information and hidden learning rules in the MOOCs learning process. The model can provide personalized guidance for each user and improve learning efficiency. The model can provide personalized service to help learners form personalized learn-ing strategies, and it also can alert learners with low grades and risk of dropping out.
Unmanned Parking System using Lab view
Authors: Dhanalakshmi Udattu , Bindusree V , Swetha J , Basha D Khalandar
Published: October 2018

The existing parking system requires manual support for controlling and monitoring vehicles. The motive of this system is to find out appropriate solution of parking related issues in different aspects. The proposed system can be control the vehicle parking system in shopping malls, Theatres, outdoor stadiums etc. The proposed system consists of two levels of parking for vehicles, where each level has limit of 100. In this proposed parking control system IR sensors will detect and count the number of vehicles on arrival and guided to enter into the vacant parking levels accordingly. This system is designed with automatic lighting and fire detection facility.
A Novel Proximity-Based Range-Free Positioning Algorithm for Wireless Sensor Network Nodes
Authors: Gui Huaimeng
Published: October 2018

This paper aims to reduce the estimated distance error (EDE) and location error (LE) of hop-based range-free node positioning algorithms. For this purpose, a novel range free positioning algorithm was proposed based on proximity, denoted as PNN-MAP. First, the proximity was introduced to express the distance between neighbouring nodes and the proximity expression was derived based on the geometric relationship between these nodes. Then, the estimated distance was calculated by the proximity expression and relevant information of anchor nodes, and the unknown node positions were estimated by the MDS-MAP to reduce the LE. Later, the PNN-MAP algorithm was simulated and compared to three other node positioning algorithms. The results show that the proposed algorithm achieved the smallest EDE and LE at different communication radiuses or different number of anchor nodes. In terms of energy consumption, the PNN-MAP had a relatively high traffic volume. However, there is no requirement on the calculation ability of network nodes, and the estimated node positions can be displayed directly on the server after the positioning. In general, the PNN-MAP enjoys a strong practicality and universality. This research promotes the application of wireless sensor networks (WSNs).
Aims and Scope
Authors: Office Editorial
Published: October 2018

N/a
Kerk en Keiser by Nicea
Authors: Pont A.D.
Published: October 2018

No abstract available.
Ontstaan en persoonlikhede in vroeë anabaptisme
Authors: Spoelstra B.
Published: October 2018

No abstract available.
Die stem van die kerk in die wereld
Authors: Van Zyl F.J.
Published: October 2018

No abstract available.
Boekbespreking
Authors: Louw J.P. , Beukes M.J. Du P. , Breytenbach A.P.B. , Koekemoer J.H. , Geertsema P.G.
Published: October 2018

No abstract available.
Risk factors, types and outcomes of arterial ischemic stroke in Polish pediatric patients: a retrospective single-center study
Authors: Sarecka-Hujar Beata , Kopyta Ilona , Raczkiewicz Dorota
Published: October 2018

Introduction

Various neurological complications may occur as a consequence of arterial ischemic stroke (AIS) and have an impact on daily activity of the patients, costs of their medical care and rehabilitation. The aim of this study was to analyze risk factors, stroke symptoms and post-stroke consequences in Polish pediatric patients depending on stroke subtype.

Material and methods

We retrospectively reviewed 77 children under the age of 18 years following their first AIS. Patients were white, Polish Caucasians, recruited in the Department of Pediatric Neurology at the Medical University of Silesia in Katowice (Poland). Statistical analysis was performed using Statistica 12.0.

Results

Gender differed significantly between stroke subgroups (p = 0.030). The presence of focal cerebral arteriopathy (FCA) and chronic diseases was associated with type of AIS (p = 0.003 and p = 0.050, respectively). An outcome without neurological deterioration (normal outcome) was observed in 43% of children with lacunar anterior circulation infarct (LACI). Hemiparesis was present in almost all children with total anterior circulation infarct (TACI), in two thirds of children with partial anterior circulation infarct (PACI) and in almost 50% of children with LACI or posterior circulation infarct (POCI). In every child with hemiplegia the stroke symptom evolved into hemiparesis at follow-up. Additionally, patients with a normal outcome were older at the time of AIS than those with at least one neurological consequence (OR = 0.894, p = 0.034).

Conclusions

The presence and number of neurological outcomes depend on stroke subtypes. A relation between the presence of post-stroke deficits and age at onset was observed. The odds of deficit after ischemic stroke decreases by an average of 10.6% if the child is 1 year older at the time of AIS.
Diabetes mellitus and congestive heart failure: the prevalence of congestive heart failure in patients with and without diabetes in Poland
Authors: Wierzba Waldemar , Karnafel Waldemar , Śliwczyński Andrzej , Pinkas Jarosław , Gujski Mariusz
Published: October 2018

Introduction

Diabetes mellitus is a systemic disease and has a negative effect on the cardiovascular system. This paper aimed to present a retrospective analysis of morbidity associated with heart failure in subgroups of patients with and without diabetes in Poland in 2012.

Material and methods

Data from the National Health Fund were used for the study. In general, 656,937 patients with heart failure, including 281,538 males and 375,354 females, were studied. In this population, additionally, 201,043 patients with heart failure (main diagnosis) and diabetes were studied, including 82,117 males and 118,926 females.

Results

The mean index of morbidity associated with heart failure in the whole subpopulation of diabetes patients was 9.03%; 8.42% for males and 9.50% for females. Morbidity associated with heart failure in the population of patients diagnosed with diabetes in Poland in 2012 was seven times higher compared to morbidity associated with heart failure in non-diabetes patients. Morbidity associated with heart failure in females was significantly higher compared to morbidity in males in the whole population, in both the subpopulations of patients with and without diabetes.

Conclusions

Diabetes mellitus significantly increases risk of heart failure in both women and men. The risk is significantly high after the age of 60 years and higher in females.