bluuebunny/crossref_metadata_2025 huggingface dataset:
EFICIENCIA DE LA RESINA LEWATIT MONOPLUS M 600 EN LA REMOCIÓN DE NITRATOS EN AGUAS PARA CONSUMO HUMANO
Authors: Guerrero Vejarano Tania E. , Anaya Fernández Óscar G.
Published: February 2020

En varias partes del mundo las fuentes de agua son contaminadas por nitratos, principalmente por actividades antropogénicas, siendo una potencial amenaza para la salud, la presente investigación tuvo como objetivo determinar la eficiencia de la resina convencional de intercambio iónico LEWATIT MonoPlus M 600 (aniónica de base fuerte) en la remoción de nitratos, se utilizó el método de espectroscopia Uv-Vis para la cuantificación de nitratos, asimismo se construyó las columnas de intercambio iónico con diámetro de 1”, 0,05 L de volumen de resina y una altura de columna de 40 cm, donde se evaluó la eficiencia de las columnas de intercambio iónico, se manejó dos variables, el tiempo de operación y diferentes concentraciones de nitratos. Se determinó que la mayor eficiencia de la resina fue de 99,55 %, a una concentración de 6,45 meq de NO3-(400 ppm) en un tiempo de 30 min. La eficiencia más baja de 18,61 % se encontró para la concentración de 16,13 meq de NO3-(1000 ppm) en 120 min de operación de la columna. En el análisis de las aguas de Tingo María se determinó que el Pozo 5 de Villa Potokar fue el único que supera los límites máximos permisibles tal como lo indican los estándares de calidad ambiental nacional de agua (10 ppm de NO3 de N total o 45 ppm de NO3 ) con una concentración de 52,76 ppm, por lo tanto, no es apta para consumo humano sin previo tratamiento.
BIOPELÍCULAS PRODUCIDAS CON CÁSCARA DE NARANJA Y REFORZADAS CON CELULOSA BACTERIANA
Authors: Alata Mayhuire Evelin , Cuadros Huamaní Yuri , Miranda Zanard Luis , Medina de Miranda Esperanza
Published: February 2020

En este estudio se han elaborado biopelículas a partir de cáscara de naranja, utilizando pectina, en calidad de reticulante y glicerina que hace las veces de plastificante. Asimismo, se ha determinado el efecto de la adición de celulosa bacteriana, obtenida de la fermentación estática de kombucha (Manchurian fungus), en tales biopelículas. Es destacable que la cáscara de naranja ha sido sometida previamente a un proceso de extracción por arrastre de vapor para recuperar su aceite esencial. Experimentalmente, se encontró que una formulación adecuada de biopelículas contiene los porcentajes másicos siguientes: cáscara de naranja, 15; celulosa bacteriana, 5; pectina, 40; y glicerina, 40. Dicha biopelícula ostentó una resistencia a la tensión de 5,53 N/mm2 , elongación de 51,60 % y permeabilidad de 0,0273 g.mm/(h.kPa.m2 ). El contenido de pectina afectó significativamente las propiedades de las biopelículas, debido a su interacción con el glicerol. La celulosa bacteriana contribuyó a incrementar la resistencia a la tensión de las biopelículas, pero redujo su elongación, y permeabilidad, Por ello se constituye en un agente reforzante efectivo cuya producción es sencilla y segura.
MODELING AND SIMULATION FOR SUPPLY CHAIN FINANCE UNDER UNCERTAIN ENVIRONMENT
Authors: Jin Wei , Wang Chengfu
Published: February 2020

This paper studies the role of factoring in a bilateral supply chain, where both the supplier and retailer are financially
constrained. Applying the stylized Stackelberg game, we analytically present that the supplier’s capital shortage limits the advantage of trade
credit provided to the retailer. To overcome this limitation, we design a hybrid strategy composing of trade credit and factoring, and then investigate
how the supplier uses factoring strategy to achieve the best performance. Analytical and numerical results show that: (1) each supply chain partner can
benefit from factoring, and the benefits depend on operational and financial characteristics; (2) in a fairly priced factoring market, bankruptcy costs
reduce the benefits of factoring, but does not change the dominance of full factoring; (3) in a strategically priced factoring market, partial factoring
may dominate full factoring. Managerially, our study implies that a supplier may benefit from dividing his accounts receivable when facing a factor with
a strong pricing ability.
Testing Densities and Refractive Indices of Extraterrestrial Ice Components Using Molecular Structures—Organic Compounds and Molar Refractions
Authors: Hudson Reggie L. , Loeffler Mark J. , Ferrante Robert F. , Gerakines Perry A. , Coleman Falvia M.
Published: February 2020

The use of infrared spectra to determine molecular abundances of icy astronomical objects and to study their chemistry requires laboratory measurements of reference spectra and related quantities, such as the index of refraction (n) and density (ρ) of candidate ices. Here we present new n and ρ measurements on ices involving over 30 C-, H-, and O-containing compounds, both acyclic and cyclic, representing seven chemical families. We examine the results in a way that is rare in the astrochemical literature, namely one in which data from an ice formed from molecules of a particular chemical family are compared to measurements on another member of the same family, such as of a homologous series or a pair of isomers. Apart from the intrinsic usefulness of the n and ρ data, a structure-based comparison can help establish trends and identify possibly spurious results. As liquid-phase data sometimes are used in low-temperature astrochemical work in the absence of solid-phase measurements, we compare our new ice results to those for the corresponding room-temperature liquids. We emphasize the use of our n and ρ data to compute the molar refraction (R

M
) for each of our ices, and how the resulting R

M
values compare to those expected from molecular structures. The use of calculated R

M
values and measured n values to calculate ice densities, in the absence of direct measurements, is also addressed.
Forming Diverse Super-Earth Systems In Situ
Authors: MacDonald Mariah G. , Dawson Rebekah I. , Morrison Sarah J. , Lee Eve J. , Khandelwal Arjun
Published: February 2020

Super-Earths and mini-Neptunes exhibit great diversity in their compositional and orbital properties. Their bulk densities span a large range, from those dense enough to be purely rocky to those needing a substantial contribution from volatiles to their volumes. Their orbital configurations range from compact, circular multitransiting systems like Kepler-11 to systems like our solar system’s terrestrial planets with wider spacings and modest but significant eccentricities and mutual inclinations. Here we investigate whether a continuum of formation conditions resulting from variation in the amount of solids available in the inner disk can account for the diversity of orbital and compositional properties observed for super-Earths, including the apparent dichotomy between single and multitransiting systems. We simulate in situ formation of super-Earths via giant impacts and compare to the observed Kepler sample. We find that intrinsic variations among disks in the amount of solids available for in situ formation can account for the orbital and compositional diversity observed among Kepler’s transiting planets. Our simulations can account for the planets’ distributions of orbital period ratios, transit duration ratios, and transit multiplicity; higher eccentricities for planets in single transiting systems than for those in multitransiting systems; smaller eccentricities for larger planets; scatter in the mass–radius relation, including lower densities for planets with masses measured with transit timing variations instead of with radial velocity; and similarities in planets’ sizes and spacings within each system. Our findings support the theory that variation among super-Earth and mini-Neptune properties is primarily locked in by different in situ formation conditions, rather than arising stochastically through subsequent evolution.
A Massive Star’s Dying Breaths: Pulsating Red Supergiants and Their Resulting Type IIP Supernovae
Authors: Goldberg Jared A. , Bildsten Lars , Paxton Bill
Published: February 2020

Massive stars undergo fundamental mode and first overtone radial pulsations with periods of 100–1000 days as red supergiants (RSGs). At large amplitudes, these pulsations substantially modify the outer envelope’s density structure encountered by the outgoing shock wave from the eventual core collapse of these

stars. Using Modules for Experiments in Stellar Astrophysics (MESA), we model the effects of fundamental mode and first overtone pulsations in the RSG envelopes and the resulting Type IIP supernovae (SNe) using MESA+STELLA. We find that, in the case of fundamental mode pulsations, SN plateau observables, such as the luminosity at day 50, L
50; time-integrated shock energy, ET; and plateau duration, t
p, are consistent with radial scalings derived considering explosions of nonpulsating stars. Namely, most of the effect of the pulsation is consistent with the behavior expected for a star of a different size at the time of explosion. However, in the case of overtone pulsations, the Lagrangian displacement is not monotonic. Therefore, in such cases, excessively bright or faint SN emission at different times reflects the underdense or overdense structure of the emitting region near the SN photosphere.
Corrigendum: He XL, Horak E, Wang D, Li TH, Peng WH, Gan BC (2019) Descriptions of five new species in Entoloma subgenus Claudopus from China, with molecular phylogeny of Entoloma s.l. MycoKeys 61: 1–26. https://doi.org/10.3897/mycokeys.61.46446
Authors: He Xiao-Lan , Horak Egon , Wang Di , Li Tai-Hui , Peng Wei-Hong , Gan Bing-Cheng
Published: February 2020

Entoloma subgenus Claudopus is widely distributed, yet the taxonomy and systematics of its species are still poorly documented. In the present study, more than forty collections of Claudopus were gathered in China and subsequently analysed, based on morphological and molecular data. The results revealed first a high level of species diversity of Claudopus in China and second, there is a wide ecological range regarding the substrates and the habitats ranging from temperate, tropical to subalpine locations. Based on morphological and molecular evidence, five novel species from China are proposed, viz. E. conchatum, E. flabellatum, E. gregarium, E. pleurotoides and E. reductum. Molecular phylogeny of Entoloma s.l. was also reconstructed, based on 187 representatives of Entoloma s.l. by employing the combined ITS, LSU, mtSSU and RPB2 sequences. Ten monophyletic clades (Claudopus, Leptonia, Nolanea, Cuboid-spored Inocephalus, “Alboleptonia”, Cyanula, Pouzarella, Rhodopolia, Prunuloides and Rusticoides) were recovered, while 13 taxa could not be placed in any defined clades. The results confirmed that Claudopus in a traditional morphological sense is not monophyletic and the Rusticoides-group, previously considered within Claudopus, formed a separate clade; but section Claudopus and relatives of E. undatum belong to a distinctive monophyletic group. Despite some monophyletic groups in Entoloma s.l. being distinctive in both morphology and molecular phylogeny, they were still treated as subgenera of Entoloma s.l. temporarily, because accepting them as genera will make Entoloma s.l. paraphyletic.
La géographie du pape François
Authors: de Charentenay Pierre
Published: February 2020

Les différents voyages du pape François ainsi que le choix des cardinaux expriment ses priorités. Délaissant les grands centres, en particulier européens, celles-ci se portent sur les « périphéries ». Le rapport du pape à l’Europe est ambivalent. Mais son engagement poursuit l’internationalisation de l’Église et contribue à ouvrir le centre romain sur le monde.
Qu’est-ce que le réel ?
Authors: Ferry Jean-Marc
Published: February 2020

Depuis le début du XX e  siècle, la révolution de la physique a modifié notre compréhension de la réalité et notre façon d’habiter le monde. Elle nous confronte aujourd’hui à des hypothèses qui défient l’entendement commun. À ce défi que la science contemporaine pose à la philosophie, s’ajoute celui des témoignages venant du monde profane à propos de phénomènes extraordinaires que l’on ne peut ni accréditer ni réfuter. À ce double défi, le philosophe propose de répondre par la nécessité d’un élargissement de la raison au-delà de sa restriction positiviste.
Une liturgie plus humaine
Authors: Boselli Goffredo
Published: February 2020

La réforme du concile Vatican II visait une meilleure adéquation de la pratique liturgique à la révélation évangélique. Plusieurs composantes, comme le déplacement de l’autel et l’introduction des langues vivantes, se voulaient en cohérence avec la manière de faire de Jésus. Les formes rituelles se rapprochent alors des formes élémentaires de la vie, de même qu’en Jésus, Dieu s’est rendu proche de l’humanité.
Prison Ethnography in Africa: Reflections on a Maturing Field
Authors: Martin Tomas Max , Jefferson Andrew M.
Published: February 2020

On peut aujourd’hui affirmer que les études sur les prisons dans les pays du Sud sont arrivées à maturité. Dans cet article, nous nous appuyons sur près de vingt années de recherches ethnographiques sur les prisons « au-delà de l’Occident » pour analyser ce processus de maturation. Il n’est plus possible de considérer que les prisons africaines n’ont pas été soumises au regard empirique des sciences sociales ou que tout ce que nous savons sur le sujet est fondé sur des rapports relatifs au non-respect des droits de l’homme. Le champ a connu des progrès, aussi modestes soient-ils, tant en termes de couverture spatiale que de portée analytique. Nous montrons ici en quoi cette appréhension ethnographique de l’Afrique carcérale a suscité une reconceptualisation à contre-courant des prisons, en les considérant comme relationnelles et poreuses plutôt qu’asociales, non conformes et coupées du monde. Nous identifions également deux grandes tendances actuelles en matière pénale (l’extension du filet carcéral et la gestion de l’extrémisme violent) qui appellent à des recherches plus approfondies sur les prisons en Afrique et au-delà.
Un chef d’établissement bouc émissaire
Authors: Casanova Rémi
Published: February 2020

L’article prend comme support un collège pour illustrer, analyser, critiquer deux thématiques : le phénomène du bouc émissaire à travers sa figure incarnée, ici le Principal du collège confronté à une problématique d’instabilité institutionnelle, de violence et de changement ; une méthodologie de recherche affiliée à l’analyse institutionnelle qui prend comme analyseurs les grandes thématiques du mécanisme du bouc émissaire (obstacles institutionnels ; rivalité mimétique ; tabous groupaux) ; en ce qui concerne la victime émissaire, l’étude suit son parcours depuis sa discrimination jusqu’à son exclusion (ici une auto-exclusion) en passant par sa stigmatisation et son affaiblissement relationnel et institutionnel. L’étude conclut que le bouc émissaire n’est pas sans ressources individuelles ou managériales. En ce qui concerne l’analyse institutionnelle, la grille de lecture par les thématiques et les étapes du mécanisme du bouc émissaire permet aux acteurs de la situation de replacer le processus dans un système qui les englobe tout en les responsabilisant.
The Potential of the ePortfolio as a Recruitment Tool: From the Perspective of HR Directors
Authors: Ciesielkiewicz Monika , Bonilla Claire , Olave López de Ayala Carlos
Published: February 2020

In this paper, the authors explore the potential of the electronic portfolio (ePortfolio) as a recruitment tool, in particular whether Human Resources directors would be willing to use it during the recruitment and selection process. The ePortfolio presents, documents, reflects on, and fosters students’ skills, credentials, certificates and diverse formal and informal experiences in a structured and well-organized manner. Because the ePortfolio is, by nature, flexible and adaptable, an ePortfolio developed with the help of professors over the course of a students' studies can easily be incorporated into professional networking platforms as a job search tool and showcase the skills required for a successful applicant. It is often said that the difference between what is taught in the academic world and the practical skills that are required by the business sector make it difficult for students to access the labor market. The ePortfolio may help to reconcile both worlds. In order to examine whether Human Resources directors are willing to use an ePortfolio as a recruitment tool, a survey was carried out among fifty-two Human Resources directors. The research findings reveal that an educational ePortfolio can count on significant approval in the business sector. This research study is relevant as it provides valuable information on this topic and it is the only one to date, conducted among HR directors in the context of Spanish-speaking countries.
Character Education Based On Digital Comic Media
Authors: Rina Nofha , Suminar Jenny Ratna , Damayani Ninis Agustini , Hafiar Hanny
Published: February 2020

Reading is one of the cultures in society that tends to be abandoned along with the rapid development of information technology as children nowadays tend to choose something practical as a medium for finding information. Therefore, to improve the latest learning methods through digital media, character-based literacy comics become the main choice in building positive educational values among elementary school students. This study aims to produce character-based comic media, determine the feasibility and effectiveness of character-based comic media on the development of character education for fourth-grade elementary school students. This research used development research consisting of some stages, namely: research and data collection, planning, product draft development, expert validation, expert-based revision, limited trials, improvement of the product of limited trial results, field trials, improvement of the final product, and product dissemination. The subjects of this study were the fourth-grade students of the Koran Elementary School (SDQu) i.e. 26 students consisting of 6 students for limited trials and 20 students for field trials. The results of this study show that: (1) character-based comic media was produced in thematic-integrative learning, (2) the developed comic media were viewed in terms of the quality aspects of media aspects and material aspects from the experts, the teacher, and the results of students’ responses were categorized very well , and (3) comic media developed effectively increased the value of student character in the learning process.
La Gascogne toulousaine aux XIIe-XIIIe siècles
Authors: Mousnier Mireille
Published: February 2020

La Gascogne toulousaine, pays de terres ingrates blotti dans le coude de la Garonne, n'est rien d'autre pendant longtemps qu'un angle mort. Comment une région aussi déshéritée sort-elle de son inertie pour entrer dans une dynamique de désenclavement, d'aménagement et d'intégration ? L'étude qui en est faite, à partir des acquis les plus récents de la nouvelle géographie humaine, envisage la croissance médiévale des xiie et xiiie siècles en bousculant quelque peu les méthodes traditionnelles de l'histoire rurale du Moyen Âge.
An Overview on Stochastic Global Optimization and its Multi-Domain Applications
Authors: Chimmiri Venkateswarlu
Published: February 2020

Optimization is of great interest and it has widespread applications in engineering and science. It has become a major technology contributor to the growth of industry. It is extensively used in solving a wide variety of problems in design, operation, and analysis of engineering and technological processes. Optimization of large-scale problems pose difficulties concerning to dimensionality, differentiability, multimodality and nonlinearity in objective functions and constraints. In order to overcome such difficulties, there has been a rapidly growing interest in advanced optimization algorithms. Stochastic and evolutionary optimization algorithms are increasingly used to solve challenging optimization problems. These algorithms include genetic algorithm, simulated annealing, differential evolution, ant colony optimization, tabu search, particle swarm optimization, artificial bee colony algorithm, and cuckoo search algorithm. These algorithms are typically inspired by some phenomena from nature and they are robust. These algorithms do not require any gradient information and are even suitable to solve discrete optimization problems. These methods are extensively used to solve the optimization problems concerning to systems that are highly nonlinear, high dimensional, and noisy or for solving problems that are not easily solved by classical deterministic methods of optimization.
Topical Issues on Cyberbullying Prevention
Authors: Marzano Gilberto
Published: February 2020

Cyberbullying represents an actual risk, especially for the online generation which is continuously connected and socialize through the internet. This article presents and comments on some cyberbullying issues (e.g. relative anonymity of perpetrators and repetition of bullying acts) and is devoted to educators engaged in cyberbullying prevention. The first step for cyberbullying prevention is the knowledge acquisition of what cyberbullying is and how it occurs within a specific context. This is not an easy task since cyberbullying is a complex and creep new phenomenon, so much that researchers' opinion is often divided on its definition and there isn't agreement on many aspects concerning it.
Providing Clarity on Big Data Technologies
Authors: Volk Matthias , Staegemann Daniel , Jamous Naoum , Pohl Matthias , Turowski Klaus
Published: February 2020

Big Data is a term that gained popularity due to its potential benefits in various fields, and is progressively being used. However, there are still many gaps and challenges to overcome, especially when it comes to the selection and handling of relevant technologies. A consequence of the huge number of manifestations in this area, growing each year, the uncertainty and complexity increase. The lack of a classification approach causes a growing demand for more experts with a broad knowledge and expertise. Using various techniques of ontology engineering and following the design science methodology, this work proposes the Big Data Technology Ontology (BDTOnto) as a comprehensive and sustainable classification approach to classify big data technologies and their manifestations. In particular, a reusable, extensible and adaptable artifact in the form of an ontology will be developed and evaluated.
A Proficient Approach for Load Balancing in Cloud Computing-Join Minimum Loaded Queue
Authors: Sharma Minakshi , Kumar Rajneesh , Jain Anurag
Published: February 2020

Cloud load balancing is done to persist the services in the cloud environment along with quality of service (QoS) parameters. An efficient load balancing algorithm should be based on better optimization of these QoS parameters which results in efficient scheduling. Most of the load balancing algorithms which exist consider response time or resource utilization constraints but an efficient algorithm must consider both perspectives from the user side and cloud service provider side. This article presents a load balancing strategy that efficiently allocates tasks to virtualized resources to get maximum resource utilization in minimum response time. The proposed approach, join minimum loaded queue (JMLQ), is based on the existing join idle queue (JIQ) model that has been modified by replacing idle servers in the I-queues with servers having one task in execution list. The results of simulation in CloudSim verify that the proposed approach efficiently maximizes resource utilization by reducing the response time in comparison to its other variants.
Multimodal Biometric Based on Fusion of Ridge Features with Minutiae Features and Face Features
Authors: Singh Law Kumar , Khanna Munish , Garg Hitendra
Published: February 2020

Multimodal biometrics refers to the exploiting combination of two or more biometric modalities in an identification of a system. Fingerprint, face, retina, iris, hand geometry, DNA, and palm print are physiological traits while voice, signature, keystrokes, gait are behavioural traits used for identification by a system. Single biometric features like faces, fingerprints, irises, retinas, etc., deteriorate or change with time, environment, user mode, physiological defects, and circumstance therefore integrating multi features of biometric traits increase robustness of the system. The proposed multimodal biometrics system presents recognition based on face detection and fingerprint physiological traits. This proposed system increases the efficiency, accuracy and decreases execution time of the system as compared to the existing systems. The performance of proposed method is reported in terms of parameters such as False Rejection Rate (FRR), False Acceptance Rate (FAR) and Equal Error Rate (EER) and accuracy is reported at 95.389%.
An Exploration of Mixed DNA Samples by Forensic Biological Data
Authors: Koneru Suvarna Vani , Kollu Praveen Kumar , Kodali Geethika , Pothineni Naveen , Aravapalli Sri Chaitanya
Published: February 2020

This article presents criminal bioinformatics approach which turned out to be fast, exact, and definitive in the evaluation and the investigation of crude DNA profiling information. The most problematic scenario for mixture interpretation, however, is when the amount of DNA is limited for one or more of the sources in a mixture. The present study has examined the utility of legal bioinformatics application to Short Tandem Repeats (STR) information. The DNA profiling information is overseen and investigated on the grounds of the different loci display and changeability in various people. The authors have consolidated a similar general idea Inconstancy in STR areas can be utilized to recognize one DNA profile from another.
A Hybrid Batch Mode Fault Tolerance Strategy in Desktop Grids
Authors: Rani Geeta , Bansal Jyoti
Published: February 2020

Desktop grids make use of unused resources of personal computers provided by volunteers to work as a huge processor and make them available to users that need them. The rate of heterogeneity, volatility, and unreliability is higher in case of a desktop grid in comparison to conventional systems. Therefore, the application of fault tolerance strategies becomes an inevitable requirement. In this article, a hybrid fault tolerance strategy is proposed which works in three phases. First, two phases deal with the task and resource scheduling in which appropriate scheduling decisions are taken in order to select the most suitable resource for a task. Even if any failure occurs, it is then recovered in the third phase by using rescheduling and checkpointing. The proposed strategy is compared against existing hybrid fault tolerance scheduling strategies and ensures a 100% success rate and processor utilization and outperforms by a factor of 3.5%, 0.4%, and 0.1% when turnaround time, throughput, and makespan, respectively, are taken into account
Heuristics for Mixed Strength Sensor Location Problems
Authors: Kincaid Rex K , Givens Robin M.
Published: February 2020

Location-detection problems are pervasive. Examples include the detection of faults in microprocessors, the identification of contaminants in ventilation systems, and the detection of illegal logging in rain forests. In each of these applications a network provides a convenient modelling paradigm. Sensors are placed at particular node locations that, by design, uniquely detect and locate issues in the network. Open locating-dominating (OLD) sets constrain a sensor's effectiveness by assuming that it is unable to detect problems originating from the sensor location. Sensor failures may be caused by extreme environmental conditions or by the act of a nefarious individual. Determining the minimum size OLD set in a network is computationally intractable, but can be modelled as an integer linear program. The focus of this work is the development and evaluation of heuristics for the minimum OLD set problem when sensors of varying strengths are allowed. Computational experience and solution quality are reported for geometric graphs of up to 150 nodes.
Utility and Acceptability of Perskindol Spray and Gel as a Topical Treatment for Musculoskeletal Pain
Authors: Padungsutt Puchong , Tassanawipas Warat , Javier Agripino Beng , Nierva Paul
Published: February 2020

Perskindol (study treatment) is a topical pain treatment in gel or spray form which contains menthol and herbal components. These two open-label, prospective, nonrandomized monadic studies in the Philippines and Thailand investigated the utility and acceptability of the study treatment for musculoskeletal pain. Adults with musculoskeletal pain were advised to use the study gel or spray as needed for up to 7 days. Their usage, perceptions, and response to treatment were assessed by patient diary and structured questionnaire. At study end, patients from both studies generally rated the study treatment higher in terms of ease of use, onset, and duration of pain relief, low potential for skin irritation and overall rating compared with their previous treatment. Differentiation analysis showed that the study treatment addressed patient preferences perceived as important, which were rapid relief of pain and ease of use. These findings suggest that the study spray and gel are useful and acceptable topical treatments for musculoskeletal pain and may be considered in self-directed pain management.
Distributed Denial-of-Service Attack Detection and Mitigation for the Internet of Things
Authors: Ojajuni Opeyemi Peter , Ismail Yasser , Lawson Albertha
Published: February 2020

The Internet of Things (IoT) allows different devices with internet protocol (IP) address to be connected together via the internet to collect, provide, store, and exchange data amongst themselves. The distributed denial of service (DDoS) attack is one of the inevitable challenges which should be addressed in the development of the IoT. A DDoS attack has the potential to render a victim's services unavailable, which can then lead to additional challenges such as website outage, financial loss, reputational damage and loss of confidential information. In this article, a framework of the SDN controller via an application programming interface (API) is compared to an existing framework. SDN provides a new architecture that can detect and mitigate a DDoS attack so that it makes the networking functionalities programmable via the API and also it centralizes the control management of the IoT devices. Experimental results show the capability of the SDN framework to analyze a real-time traffic of the SDN controller via the API by setting a control bandwidth usage threshold using the API.
Applying Formal Methods to SOA and SaaS Service Compositions for ERP Systems
Authors: Benabdelhafid Maya Souilah , Boufaida Mahmoud
Published: February 2020

Service oriented architectures (SOA) and software as a service (SaaS) models are accelerating the use of the service concept. They have been rapidly adopted by enterprise resource planning (ERP) providers and offers to organizations modern environments favorable for making strategic decisions. However, as the SaaS concept is often confused with the SOA one, a solution is needed to clarify this problem before moving to the introduction of a framework that aggregates several services. Moreover, most of the services-based solutions rely on a particular composition and only a few are equipped with appropriate formal tools for automating the service verification. They focus on specific formal models and are based on particular properties. This article proposes a formal framework that reveals a set of general steps starting from defining the service composition before shifting to the use of the chosen formal methods so as to verify the ERP system properties.
CATS-CAE Reflective Middleware Framework for Adapting Context-Aware Transactional Services
Authors: Ettazi Widad , Nassar Mahmoud , Hafiddi Hatim
Published: February 2020

Pervasive environments are characterized by limited computing resources and wireless connectivity. In parallel, current application domains have variable transactional requirements that do not fit the traditional ACID model. As a result, the pervasive environment characteristics are compelling and cannot be supported by conventional solutions that are typically dedicated to a specific application domain and support a limited set of context parameters. This article aims at providing a complete solution that addresses the challenges of the adaptability of context-aware transactional services “CATS” in pervasive environments. Thus, a new framework CATS-CAE was designed, which offers a comprehensive structure of multiple component chains. The adaptation strategy in CATS-CAE is based on a hybrid approach combining the use of adaptation policies, alternative strategy and behavioral adaptation of composite services through the “Profiled Task Class” concept. A probabilistic model is also presented to support the efficiency of the proposed approach.
DSML4CS
Authors: Du Dehui , Guo Tong , Wang Yao
Published: February 2020

Cyber physical systems (CPS's) are a kind of complex system with highly integrated interaction between computing resources and physical environment in a network environment. There are some challenges in modeling and simulation of heterogeneous CPS due to its hybrid and heterogenous characteristics. To address the issue, we propose an executable domain specific modeling language for co-simulation (DSML4CS) to model the co-simulation of CPS. According to the construction method of domain modeling language, we present the abstract syntax, concrete syntax and operational semantics of DSML4CS. We also propose a flexible co-simulation mechanism, which supports partial step revision of specific co-simulation process with the state event fault-tolerant mechanism. The co-simulation language for heterogeneous CPS is implemented based on the GEMOC platform. Our aim is to provide the co-simulation service in CPS. The usability of DSML4CS is illustrated with a case study of a temperature control system in an energy-aware building.
Mechanized Welding with Metal Cored Wire
Authors: Golyakevich Andrey A. , Orlov Leonid N. , Maksimov Sergey Yu.
Published: February 2020

Currently, there is a steady upward trend in the consumption of flux-cored wires in the global market of welding consumables. One of the rapidly developing technologies for the manufacture of metal structures is shielded gas arc welding with flux-cored wire with a metal core. According to the technology of use, metal cored wires do not differ from solid wires, and even surpass them in some technological characteristics. Taking into account global trends in the development of mechanized welding and the lack of domestic analogues, LLC TM.VELTEK has developed and mastered the manufacturing of high-performance metal cored wire TMB5-MK for welding in mixtures of 82% Ar + 18% CO2, 90% Ar + 10% CO2. The research aimed to study the features of the process of welding with metal cored wire compared to welding with solid wire. It has been established that metal cored wire provides high stability of arc burning in a wide range of welding modes. When welding at the same conditions in the optimal range, the index of stability of arc burning when using solid wire Sv-08G2S is 3 times lower. At the same time, the TMV5-MK wire provides a reduction in spatter losses, an increase in welding productivity and high mechanical properties of the weld metal. It is shown that the stability of the welding process is significantly affected by the electrodynamic properties of the power source and this factor must be taken into account when evaluating the welding and technological properties of welding wires and developing recommendations for their use.
Mechanical Properties of Duplex Treated Steels Obtained by Instrumented Indentation
Authors: Nistor Ana Maria , Becheru Andrei , Foltuț Daniel , Buzdugan Ramona Monica , Buzdugan Dragoş , Radu Bogdan
Published: February 2020

Nowadays there is a growing need to reduce or control wear, corrosion and fatigue in order to extend the lifetime of mechanical parts, to make engines and devices more efficient, to develop new advanced products, to conserve material resources, to save energy and to improve the safety. The surface properties of mechanical parts may be improved through Duplex treatments. A Duplex treatment is a sequence of two treatments, combining their advantages and leading to better surface properties. A Duplex treatment consisting in nitriding and work hardening through shot peening has been chosen as a solution for improving the properties of EN 34CrNiMo6 alloyed steel. This paper reports the results obtained for hardness and bulk modulus on treated and untreated samples. The samples were examined using a Dynamic Ultra Micro Hardness (DUH) tester under a set of maximum loads ranging from 100 to 1000 mN. Each sample was subjected to load-unload cycle under the same amount of maximum load and the loads vs. penetration depth curves were plotted. Results showed a better mechanical behavior of Duplex treated.
Research on Welding with Electron Beam of Multiple Overlapping Nickel Based Amorphous Ribbons
Authors: Nicolaeiscu Mircea , Codrean Cosmin , Mnerie Gabriela-Victoria , Popescu Mina
Published: February 2020

This paper presents experiments regarding the welding with electron beam of multiple overlapping Ni-based amorphous ribbons produced by "Planar flow casting" method [1]. Welded samples were performed, using the electron beam welding equipment “Chamber Machine EBG 45-150 K14” [2]. The welded joints were analyzed by SEM, EDX, XRD in order to optimize some technological parameters to avoid deterioration of the amorphous ribbons during the welding process [3].
Mechanical Testing of GFRP Composite Materials Used in Wind Turbine Blades Construction
Authors: Morăraș Ciprian , Tugui Catalin Andrei , Steigmann Rozina , Barsanescu Paul Doru , Leitoiu Bogdan , Goanta Viorel
Published: February 2020

The paper proposes to present the results of the evaluation of glass fiber reinforced plastics (GFRP) used in the construction of wind turbine blades. In a wind turbine, the blades are the most exposed to damages and the defects which appear are various and are connected with the type of manufacture, simple/complex loading, environmental conditions etc. In order to increase the lifetime span and to analyze the degradation phenomena during the materials functioning, destructive evaluation tests are performed to determine the mechanical property, by testing pure shear on specimens Iosipescu, from GFRP with woven reinforcement at [± 45°] and [0°/90°], with the shear fixture, endowment of Technical University Gh.Asachi Iasi.
Testing of Welded Joints between Pipes for Pressure Vessels Made of Hot Rolled Fine-Grained Steel P460NL1
Authors: Arsić Miodrag , Bošnjak Srđan M. , Grabulov Vencislav , Mladenović Mladen , Savić Zoran
Published: February 2020

This paper contains results of tests performed in order to determine mechanical properties of steel P460NL1, used as filler material during the execution of welded joints. Arc welding of samples from which the specimens were taken was carried out through the application of welding process 111, because it is one of the processes for the execution of pipelines for pressure equipment. Microspecimens with diameter of Ø1,5 mm were tested in order to determine tensile properties of material taken from the heat-affected zone and weld metal, while specimens with diameter of Ø6 mm were tested in order to determine tensile properties of parent material. Standard Charpy V-notch specimens were used in order to determine impact energy. Results of metallographic tests which refer to the structure of a pipe welded joint are also presented.
Influence of Cooling Time t8/5 on Impact Toughness of P460NL1 Steel Welded Joints
Authors: Sedmak Simon , Aranđelović Mihajlo , Jovicic Radomir , Radu Dorin , Čamagić Ivica
Published: February 2020

The results of impact testing of welded joint specimens taken from a welded plate made of P460NL1 steel are presented in this paper, and analysed with regards to the cooling time t8/5, that was previously calculated. The aim was to determine how the cooling times that were measured, some of which were below the minimum required values, affected the toughness, in terms of total impact energy and its components, crack initiation and crack propagation energy. In addition, this analysis included the effects of temperatures measured at the opposite ends of the plate during the welding process, since this had also affected the cooling times for each welding pass. After observing the differences in total, crack initiation and propagation energy between the tested specimens taken from different parts of the welded plate, it was determined that the specimens from the part where the higher temperatures were measured had shown better, more uniform results, whereas the average total impact energy for specimens from both groups were very similar. It was also noticed that the ratio of crack propagation to crack initiation was more favourable (greater) in the case of specimens from the second group (with higher temperature), as the values of crack initiation energy decreased slightly and the crack propagation energy increased.
Evaluation of the Cavitation Resistance of INCONEL 718, in Delivered and Respectively Heat Treated Condition
Authors: Salcianu Cornelia Laura , Bordeasu Ilare , Sîrbu Nicuşor Alin , Bădărău Rodica , Mălaimare Gabriel , Hluscu Mihai , Ostoia Daniel , Oancă Octavian Victor
Published: February 2020

Inconel 718 is a very difficult metal for machining because of its high plasticity. Lately, more and more researchers are interested in using it for cavitation parts, such as the plugs and drawers of the valves. For this purpose, thermal volumetric treatments have been initiated to facilitate mechanical machining, aiming simultaneously to obtain good compression and cavitation resistance results. Therefore, this paper presents the results of cavitation erosion behavior and cavitation resistance of ICONEL 718, subjected to two thermal treatment regimes, differentiated by the duration (temperature 800 °C and residence times 5 hours, and respectively 10 hours). The assessment of the cavitation resistance provided by each heat treatment regime is based on the average durability cavitation parameter, as defined by K. Steller. The research is achieved by using the standard vibrator device with piezo - ceramic crystals from the Cavitation Laboratory of the Politechnica University of Timisoara.
General Considerations Regarding Friction Stir Welding of some Steels Used in Important Industrial Fields
Authors: Ciucă Cristian , Cojocaru Radu , Botila Lia-Nicoleta , Perianu Ion Aurel
Published: February 2020

The paper present some general aspects regarding results obtained by ISIM Timișoara at FSW of steel alloys, with wide use in important industrial fields. The paper also contains information on own contributions of ISIM Timișoara in the field of FSW.Until the present, ISIM Timisoara has responded to some specific requests from the industry, for applying of the FSW process to light alloys and industrial copper Cu 99.The paper presents some general elements regarding the results obtained to welding steels having wide use in industry and which can substantiate industrial applications.The experimental welding programs were developed using the techniques of application of the FSW process, made by ISIM Timisoara: FSW welding machine, welding tools for steels, monitoring systems of the welding process FSW, respectively system for applying of the FSW-TIG hybrid welding process.Sintered tungsten carbide P20S tools with smooth shoulder and pine in 3 constructive variants: smooth conical, smooth cylindrical and pine with four flat recesses (pyramid trunk) were used.It has been shown that the welding tools made of P20S tungsten carbide, with sharp edges, are more resistant and present the best solution for FSW applications.Experimental programs have shown that by observing specific process conditions, the FSW process can be applied with excellent results when welding steel.
Regulatory T Cells Induced by Single-Peptide Liposome Immunotherapy Suppress Islet-Specific T Cell Responses to Multiple Antigens and Protect from Autoimmune Diabetes
Authors: Bergot Anne-Sophie , Buckle Irina , Cikaluru Sumana , Naranjo Jennifer Loaiza , Wright Casey Maree , Zheng Guoliang , Talekar Meghna , Hamilton-Williams Emma E. , Thomas Ranjeny
Published: February 2020

Ag-specific tolerizing immunotherapy is considered the optimal strategy to control type 1 diabetes, a childhood disease involving autoimmunity toward multiple islet antigenic peptides. To understand whether tolerizing immunotherapy with a single peptide could control diabetes driven by multiple Ags, we coencapsulated the high-affinity CD4+ mimotope (BDC2.5mim) of islet autoantigen chromogranin A (ChgA) with or without calcitriol (1α,25-dihydroxyvitamin D3) into liposomes. After liposome administration, we followed the endogenous ChgA-specific immune response with specific tetramers. Liposome administration s.c., but not i.v., induced ChgA-specific Foxp3+ and Foxp3− PD1+ CD73+ ICOS+ IL-10+ peripheral regulatory T cells in prediabetic mice, and liposome administration at the onset of hyperglycemia significantly delayed diabetes progression. After BDC2.5mim/calcitriol liposome administration, adoptive transfer of CD4+ T cells suppressed the development of diabetes in NOD severe combined immunodeficiency mice receiving diabetogenic splenocytes. After BDC2.5mim/calcitriol liposome treatment and expansion of ChgA-specific peripheral regulatory T cells. IFN-γ production and expansion of islet-specific glucose-6-phosphatase catalytic subunit–related protein–specific CD8+ T cells were also suppressed in pancreatic draining lymph node, demonstrating bystander tolerance at the site of Ag presentation. Thus, liposomes encapsulating the single CD4+ peptide, BDC2.5mim, and calcitriol induce ChgA-specific CD4+ T cells that regulate CD4+ and CD8+ self-antigen specificities and autoimmune diabetes in NOD mice.
Evolution of the concept of abuse of means of correction and discipline
Authors: Antonioni Manuela , Fornari Massimiliano Cesare
Published: February 2020

The crime of abuse of means of correction and discipline connotes punishment pipeline generally lawful, such as those relating to the use of the means of correction and discipline against a subject about which you have any disciplinary power, but that present an excess sufficient to overcome the rehabilitative purpose inherent in the aforementioned means alone which involves the legality of their forecast without falling in the application of an offense under Article. 571 penal code, modified never in literal text. Historically the interpretation of the scope of such incriminating case was not easy, as it has suffered more than other rules of the evolution of social customs, family and more generally cultural, which definitely has inevitably impacted on the scale of the notion abuse. The jurisprudence of the Supreme Court, such as about who has promptly implemented the guidelines, has greatly expanded the area of the illegality of the means of correction and discipline, reaching now to encompass any form of violence also moral or psychological, which It is therefore totally banned from the range of application of the provision and the use of means not only illegal but also whether former lawful when modified the underlying disciplinary order, which so discriminate more behaviors that the active subject holds despite a rehabilitative purpose actually, as it was considered by the jurisprudence dating.
International research on children’s issues in one-parent, homosexual, adolescent motherhood and marital violence
Authors: Mastronardi Vincenzo M. , Calderaro Monica , Senesi Marta , Campioni Maria
Published: February 2020

An adequate and healthy exercise of the parental role may be impaired by several conditions related to the family unit and in particular to the parents, because they adversely affect the child’s psychophysical development, causing physical, psychological and social consequences. The following data confirming will be the most up-to-date, linked to the validity of literature of this introduction, referring to researches of some specific factors of risk, affecting parental behaviour and that, mostly lead to family mismatches.