bluuebunny/crossref_metadata_2025_split huggingface dataset:
ASSESSING ON THE ECONOMIC EFFICIENCY OF THE CLIMATE CHANGE ADAPTION MODELS IN TRA VINH: THE CROP CONVERSION MODEL
Authors: Nguyen Loan Thi Thuy 
Published: June 2019

According to the survey of 162 farm households in Tra Vinh province, this article compares and evalutes the economic efficiency of the crop conversion model (from rice to vegetable). The results show that the incomes of these farm households were 3 times higher than those of rice farm households, approximately 5.7 million VND/0.25 acre /year. In addition, the regression analysis was applied in this study to identify and quantify the factors influencing the economic efficiency of the conversion model. The results confirm the interaction between vegetable crops, rice – vegetable rotational crops, labor cost, age and the ethnicity of householders. In particular, the households’ awareness of climate change has a positive impact on the economic efficiency of the model. Finally, the research suggests some solutions to the improvement of the economic efficiency of the crop conversion model which adapts to climate change.
OPTIMIZING THE SELECTION OF CONSTRUCTION MACHINERY FOR TRAFFIC WORKS UTILIZING MATHEMATICAL PROGRAMMING APPROACH
Authors: Tang Minh Tan 
Published: June 2019

The article used the methods planning mathematics to give alternatives machines, construction equipment. This problem, based on the specific constraints such as mass excavation, leveling, compaction, transport ... to meet the full workload as planned. Additionally, this task must also satisfy the given objective function is minimal cost machine shift and ensure the execution time is shortest. This approach aims to bring about economic benefits for the construction company and is used for reference when selecting machines, construction equipment works with the same workload. On the other hand, problem also propose solutions equippedmachinery and equipment for the construction company.
FACTORS AFFECTING FOOD SECURITY AT HOUSEHOLD LEVEL IN THE MEKONG DELTA
Authors: Nguyen Ba Thi Be , Nguyen Loan Thi Cam 
Published: June 2019

The Mekong Delta is the largest granary in the country, providing food not only for the region, but also for national food security and exports. However, household food security in the region is not yet guaranteed, a large number of households are unable to afford enough food. In order to provide a practical basis for ensuring household food security in the Mekong Delta, the questionnaire for data collection on 300 respondents was used. Exploratory factor and multivariate linear analysis were used for the data analysis. The results revealed that there are seven groups of factors influencing food security by the decreasing order including (1) market, traffic and mechanization, (2) farm land size and manpower of the household, (3) storage, (4) four houses linking, (5) state policies, (6)production planning and customs, and household food distribution, (7) natural conditions.
FACTORS AFFECTING THE FINANCIAL EFFICIENCY OF SUMMER - AUTUMN AND AUTUMN - WINTER RICE CROPS IN SOC TRANG PROVINCE
Authors: Trinh Khoa Anh 
Published: June 2019

This article aims at presenting the research results on determinants affecting the financial efficiency of Summer-Autumn and Autumn-Winter crops based on the data collected from 167 rice farmers in Soc Trang province. The results showed that three indicators presenting the financial efficiency of Autumn-Winter rice crop were higher than that of Summer-Autumn rice crop. The factors affecting the financial efficiency of Summer-Autumn rice crop included the cost of fertilizer, the cost of pesticides, the cost of harvesting, the cost of hiring labor, the cost of irrigation, the cost of depreciation of machinery and equipment (negative correlation), and cultivated land area (positive correlation). For Autumn-Winter the cost of fertilizer, pesticides, harvesting costs and labor costs had a negative impact on financial performance, while the cultivated land area, the educational level and experience of the household’s head had a positive impact on the financial efficiency of this crop.
Turbulence and Particle Acceleration in Collisionless Magnetic Reconnection: Effects of Temperature Inhomogeneity across Pre-reconnection Current Sheet
Authors: Lu San , Angelopoulos V. , Artemyev A. V. , Pritchett P. L. , Liu J. , Runov A. , Tenerani A. , Shi C. , Velli M. 
Published: June 2019

Abstract
Magnetic reconnection is an important process in various collisionless plasma environments because it reconfigures the magnetic field and releases magnetic energy to accelerate charged particles. Its dynamics depend critically on the properties of the pre-reconnection current sheet. One property in particular, cross-sheet temperature inhomogeneity, which is ubiquitous throughout the heliosphere, has been shown to increase reconnection outflow speed, energy conversion efficiency, and secondary island formation rate using two-dimensional particle-in-cell simulations. Here we expand upon these findings, considering two cases with a long, thin current sheet, one with homogeneous temperature and one with inhomogeneous temperature across the current sheet. In the inhomogeneous temperature case, numerous secondary islands form continuously, which increases current sheet turbulence (well-developed cascade power spectra) at large wavenumbers. Current density, energy conversion, dissipation, and acceleration of high-energy particles are also enhanced relative to the homogenous temperature case. Our results suggest that inhomogeneous temperature profiles, which are realistic, need to be incorporated into studies of turbulence and particle acceleration in collisionless magnetic reconnection.
Partitioning of Magnetic Helicity in Reconnected Flux Tubes
Authors: Wright Andrew N. 
Published: June 2019

Abstract
The reconnection of two flux tubes with footpoints anchored to a plane, such as the photosphere, is considered. We focus on properties of the reconnected flux tubes, specifically their twist, which can be quantified using magnetic helicity. If the tubes are of equal flux (Φ) and are initially crossed we find the results are dependent upon the relative positioning of their footpoints: (i) nonequipartition of self-helicity is the typical situation; (ii) the total amount of self-helicity in the reconnected tubes lies between 0 and 2Φ2, corresponding to a total twist of between 0 and 2 turns. If the tubes are initially uncrossed the self-helicity of each reconnected tube depends upon footpoint arrangement. However, care needs to be taken when using these results as bringing the tubes together at the reconnection site can introduce twist or writhe, which will also need to be taken into account. In the case where the tubes are side by side and possess some overlap, reconnection may occur without distorting the tubes. For this situation the reconnected tubes will be crossed: (i) equipartition of self-helicity is never met, but can be approached in the limit of the footpoints being quasi-colinear; (ii) the overlying tube always has a self-helicity whose magnitude >Φ2/2 (it exceeds a half turn); the underling tube’s self-helicity magnitude is always <Φ2/2 (less than a half turn). Our results have a broad application in developing models of reconnecting coronal magnetic fields, as well as in interpreting observations and simulations of these fields.
Effect of Star Rotation Rate on the Characteristics of Energetic Particle Events
Authors: Fu Shuai , Jiang Yong , Airapetian Vladimir , Hu Junxiang , Li Gang , Zank Gary 
Published: June 2019

Abstract
The recent detection of superflares on solar-type stars by the Kepler mission has raised the possibility that they can be associated with energetic coronal mass ejections (CMEs) and energetic particle events (SEPs). These space weather events can impact the habitability of exoplanets around these stars. Here we use the improved Particle Acceleration and Transport in the Heliosphere (iPATH) model to model the time-intensity profile and spectrum of SEPs accelerated at CME-driven shocks from stars of different ages traced by their rotation rates. We consider a solar-like (G-type) star with six different rotation rates varying from 0.5Ω☉ to 3.0Ω☉. In all six cases, a fast CME is launched with the same speed of ∼1500 km s−1; the resulting time-intensity profiles at three locations and energy spectra at five locations at 1 au are obtained. The maximum particle energy at the shock front as a function of r is also shown. Our results suggest that within 0.8 au the maximum particle energy at the shock front increases with the rotation rate of the star. However, event-integrated spectra for the five selected locations along the CME path show complicated patterns. This is because the Parker magnetic field for rapidly rotating stars is more tightly winded. Our results can be used in estimating the radiation environments of terrestrial-type exoplanets around solar-type stars.
De la « smart city » au numérique généralisé : la géographie urbaine au défi du tournant numérique
Authors: Peyroux Élisabeth , Ninot Olivier 
Published: June 2019

La smart city, en tant que catégorie et modèle, fait débat dans le champ de la géographie. La multiplicité des définitions et sa dimension normative n’en font pas une catégorie opératoire pour la recherche. Les approches en termes de modèles sont par ailleurs limitantes car elles ne rendent pas compte de la diversité des appropriations et pratiques dans les Nords comme dans les Suds. Enfin, les approches se heurtent à des limites disciplinaires et méthodologiques. Nous proposons une approche par le « numérique généralisé », envisagé dans sa double dimension infrastructurelle et informationnelle, car il apparaît que c’est le numérique, à travers son imbrication dans la fabrique urbaine, l’ampleur et la diversité de ses usages (dans la gestion urbaine, les processus de prise de décision, les manières de penser, de vivre, de socialiser....) qui porte les changements et soulève les défis d’interprétation et d’analyse auxquels la recherche urbaine est confrontée. Nous proposons des pistes de recherche identifiées dans les débats plus larges des sciences sociales, explorant la manière dont les géographes peuvent y contribuer à partir de questions renouvelées sur la ville, les échelles, les territoires, mais également en nous confrontant aux avancées d’autres disciplines pour repenser nos objets et nos pratiques de recherche.
Un nouveau gestionnaire : le « responsable du bonheur »
Authors: Beau Pauline 
Published: June 2019

Afin de prévenir la démotivation, le désengagement ou l’absentéisme de leurs employés, plusieurs entreprises au Québec et ailleurs dans le monde choisissent de nommer un « responsable du bonheur ». Quel est son rôle ? Comment juger de son efficacité ? Quelles sont les qualités requises pour ce poste ?
Turn the card over and… Notes on the imaginal depth of objects
Authors: D’Andrea Fabio 
Published: June 2019

Cet essai décrit le côté imaginal de la carte de crédit. On y a mis en évidence une constellation de mythes et symboles qui montre clairement le lien entre le niveau rationnel et instrumental et la narration mythique qui a toujours été à l’œuvre pour enchanter le monde qui nous n’arrêtons pas de construire. Ces mythes, qui vont de la lampe d’Aladin à la cave d’Ali Baba, sont étroitement reliés à l’usage quotidien de cet outil et nous donnent une meilleure compréhension des dynamiques cachées derrière les discours du marketing et de la technologie, comme par exemple les conséquences de ce qui est décrit comme un moyen facile de disposer de son argent ou le goût religieux, presque salvifique, qui vient du « simple » geste d’insérer la carte dans un ATM. Cela devrait suffire à illustrer le potentiel euristique de cette perspective et le fait que l’imaginaire devrait être reconnu comme un composant crucial de la création et compréhension humaine du monde.
Le bois de construction des Alpes du sud : une ressource mise en œuvre localement et exportée
Authors: Shindo Lisa 
Published: June 2019

Cette étude sur le bois de construction dans les
Alpes du sud s’appuie sur des données récentes issues d’un travail de
thèse interdisciplinaire. Le bassin versant de la Durance et la Basse
Provence, principalement aux xviie
et xviiie siècles, servent de cadre à cette étude.
Au cours de cette période, le bois a été employé localement par les
montagnards, mais également par les militaires dans le cadre des
fortifications briançonnaises. La Marine, grosse consommatrice de bois
de construction a procédé à plusieurs inventaires des arbres des Alpes
du sud et est à l’origine de forts prélèvements dans les forêts de
cette région. Les populations civiles ne sont pas en reste puisque les
bois de Haute et Moyenne Durance ont été achetés par des marchands et
transportés vers les zones situées en aval. La destination de ce bois
d’œuvre exporté peut être illustrée par le cas de la ville
d’Aix-en-Provence où de nombreuses poutres portent des marques,
témoins des échanges entre la montagne et la plaine.
Le contrôle du faîte des Vosges : aspects politiques et économiques à l’aube des Temps modernes
Authors: Yante Jean-Marie 
Published: June 2019

À l’aube des Temps modernes, le contrôle de la
chaîne des Vosges, séparant le duché de Lorraine à l’ouest et l’Alsace
à l’est, est l’objet de convoitises des principales forces en présence
(dynastes lorrains, Habsbourg, Ribeaupierre, souverains bourguignons).
La raison en est principalement d’ordre économique : des voies
importantes du trafic international, notamment entre l’Italie et les
Pays-Bas, empruntent les cols vosgiens et le massif recèle
d’importants gîtes métallifères. La mise en œuvre conjointe de
documents diplomatiques, comptables et figurés et d’acquis récents de
l’archéologie minière apporte un éclairage synthétique et si possible
chronologique de l’évolution des réseaux routiers et de leur
fréquentation d’une part, de l’exploitation des filons d’argent (Val
de Saint-Dié et Val de Lièpvre) ou de cuivre (Vosges méridionales)
d’autre part.
Les circulations de bois dans le Vercors-nord au xixe siècle : l’histoire d’une dépossession ?
Authors: Della-Vedova Gilles 
Published: June 2019

Au xixe siècle, dans le Vercors septentrional
(Isère), les ressources forestières sont l'objet de circulations qui
se font à plusieurs échelles. Durant le siècle, la constitution d'un
réseau à partir des chemins de grande communication et des sentiers
forestiers explique l'importance de l'exportation des bois pour
permettre le développement. C'est la raison pour laquelle
l'application du Code forestier est l'objet d'analyses menées à partir
des dossiers des Eaux et forêts, de ceux de l'administration
communale, de l'état civil et du cadastre. En complément d'une
approche par les organisations, avec la circulation des idées de Le
Play (Kalaora et Savoye), une autre, localisée, montre que l'on passe
des bois de la discorde à ceux de la concorde. La prise en compte par
les agents forestiers des situations locales des délinquants fait que
les foudres de l'administration passent des « petits » à la répression
contre ceux qui font de la circulation des bois le fondement de leur
notabilité.
Une race écartelée ? Les enjeux sociaux, économiques et politiques des bovins de Villard-de-Lans (Isère) du milieu du xixe siècle à 1914
Authors: Della-Vedova Gilles 
Published: June 2019

Dans la seconde moitié du xixe siècle, la promotion de l'élevage passe
par des races de montagnes destinées à se répandre dans les massifs et
à alimenter les marchés urbains. Elles sont un enjeu de pouvoir de la
part des agrariens que sont les notables républicains et les
techniciens de l'agriculture qui cherchent à imposer les cadres de
pensée de l'économie capitaliste de l'âge industriel. Dans le canton
de Villard-de-Lans, la recherche de la spécialisation laitière se
heurte aux logiques davantage diversifiées des cultivateurs qui
veulent demeurer un centre et ne pas être réduits à une périphérie.
Les relations avec la ville sont tempérées par celles avec d'autres
espaces ruraux. À l'articulation des archives de la préfecture, du
dépouillement d'une revue spécialisée et de l'utilisation d'une base
de données fondée sur l'état civil, les recensements et les cadastres,
il s'agira de mettre au jour ce que les circulations entraînent comme
enjeux sociaux, économiques et politiques.
Exploring the relationship between depression and marital satisfaction amongst pregnant women residing in southern Sri Lanka
Authors: Jayasinha B. L. E. , Perera B. N. 
Published: June 2019

BackgroundMaternal mental health is considered a global health priority, but despite this, there are still many limitations in addressing issues related to maternal mental health in Sri Lanka. Depression is the most commonly occurring psychiatric disorder among pregnant mothers, and is associated with an increased risk of suicide. Maternal suicides have increased in recent years, with a rate of 12.1 per 100,000 live births in 2010. There is a pressing need to explore the factors that influence the mental well-being of pregnant mothers. AimsThe aim of this study was to explore the relationship between antenatal depression and marital satisfaction. MethodsA questionnaire-based survey was conducted among 203 pregnant mothers who presented to 10 maternity clinics in the Galle Municipal area. The Edinburgh Postnatal Depression Scale and the Revised Dyadic Adjustment Scale were used to assess for depression and the level of marital satisfaction, respectively. ResultsA total of 42.9% of participants screened positive for antenatal depression, while 5.9% reported having ideas of self-harm or thoughts of suicide. A statistically significant weak negative correlation was detected, between marital satisfaction and antenatal depression. Lack of support from the husband was identified as significant predictor of depression amongst pregnant mothers. ConclusionsThe importance of a screening program for antenatal depression and the need for a directed focus on maternal mental health is highlighted in this study. Evidence-based, culturally sensitive mental health interventions would play a significant role in detecting and minimizing maternal mental illnesses, which is likely to help to reduce maternal suicides and minimize associated far-reaching negative impacts.
[The Bee-eater (Merops apiaster) nesting in mountain areas]
Authors: Cattaneo Guido 
Published: June 2019

[The European Bee-eater (Merops apiaster), usually breeding in lower, warm latitudes up to July isotherm of 21°C (Cramp, 1985), has recently begun his expansion in northern Italy. Gregarious throughout the year, the European Bee-eater is a summer visitor in Europe. In 2017 a new breeding colony of four-five breeding pairs, has been found out in mountain habitat facing the plain at 1,250 meters a.s.l. in Italian western Alps, showing his expansion not only in northern latitudes but even in altitudinal environment].

[Article in Italian]
[Density of Lesser Kestrel Falco naumanni in centralsouthern Sicily (Italy)]
Authors: Salvo Giovanni 
Published: June 2019

[In Sicily, the Lesser Kestrel Falco naumanni is a summer species, partly wintering; irregularly distributed in steppe habitats. In an area of 5,000 km² of central southern Sicily have been recorded, between 1977 and 2016, 127 breeding pairs, 123 of them concentrated in 5 areas, and 4 isolated pairs in suitable sites. In area A the density was of 1 pair in 4 km²; in area B of 1 pair in 21 km²; in area C of 1 pair in 10 km²; in area D of 1 pair in 12 km²; in area E of 1 pair in 3,3 km². The density was higher between 50 and 650 m of altitude.]

[Article in Italian]
Rural–urban health disparities among older adults in South Africa
Authors: Peltzer Karl , Phaswana-Mafuya Nancy , Pengpid Supa 
Published: June 2019

Background: There are limited studies assessing rural–urban disparities among older adults in Africa including South Africa.Aim: This study explores rural–urban health disparities among older adults in a population-based survey in South Africa.Setting: Data for this study emanated from the 2008 study on ‘Global Ageing and Adult Health (SAGE) wave 1’ (N = 3280) aged 50 years or older in South Africa.Methods: Associations between exposure variables and outcome variables (health status variables and chronic conditions) were examined through bivariate analyses and multivariable logistic regression.Results: Rural dwellers were more likely to be older, black African and had lower education and wealth than urban dwellers. Rural and urban dwellers reported a similar prevalence of self-rated health status, quality of life, severe functional disability, arthritis, asthma, lung disease, hypertension, obesity, underweight, stroke and/or angina, low vision, depression, anxiety and nocturnal sleep problems. Adjusting for socio-demographic and health risk behaviour variables, urban dwellers had a higher prevalence of diabetes (OR: 2.36, 95% CI: 1.37, 4.04), edentulism (OR: 2.79, 95% CI: 1.27, 6.09) and cognitive functioning (OR: 1.91, 95% CI: 1.27, 2.85) than rural dwellers.Conclusion: There are some rural–urban health disparities in South Africa, that is, urban dwellers had a higher prevalence of diabetes, edentulism and cognitive functioning than rural ones. Understanding these rural–urban health variations may help in developing better strategies to improve health across geolocality in South Africa.
Sensitivity of hydrological models to temporal and spatial resolutions of rainfall data
Authors: Huang Yingchun , Bárdossy András , Zhang Ke 
Published: June 2019

Abstract. Rainfall is the most important input for rainfall–runoff models. It is usually measured at specific sites on a daily or sub-daily timescale and requires interpolation for further application. This study aims to evaluate whether a higher temporal and spatial resolution of rainfall can lead to improved model performance. Four different gridded hourly and daily rainfall datasets with a spatial resolution of 1 km × 1 km for the state of Baden-Württemberg in Germany were constructed using a combination of data from a dense network of daily rainfall stations and a less dense network of sub-daily stations. Lumped and spatially distributed HBV models were used to investigate the sensitivity of model performance to the spatial resolution of rainfall. The four different rainfall datasets were used to drive both lumped and distributed HBV models to simulate daily discharges in four catchments. The main findings include
that (1) a higher temporal resolution of rainfall improves the model performance if the station density is high; (2) a combination of observed high temporal resolution observations with disaggregated daily rainfall leads to further improvement in the tested models; and (3) for the present research, the increase in spatial resolution improves the performance of the model insubstantially or only marginally in most of the study catchments.
Cómo comunicar la investigación desde la academia
Authors: Pineda Marco Antonio 
Published: June 2019

Considero, a partir de mi experiencia como docente de la Facultad de Ciencias Espaciales, que la divulgación científica constituye una gran oportunidad para nuestra comunidad científica, en el sentido de que permite lo siguiente: mostrar a nuestra comunidad el trabajo que se realiza de forma eficiente y con pertinencia a las necesidades de la sociedad en los tiempos modernos; amplía nuestro espectro de transparencia; permite que la Universidad llegue a las comunidades y no solo en sentido contrario; prmite fortalecer en nuestra comunidad, la importancia del trabajo científico universitario, ante los nuevos retos de desarrollo social; fortalece en nuestra comunidad académica, el equilibrio en el desarrollo de la ciencia.