Miracle-dz/UniFAR-FTUs huggingface dataset:
Globalization and Granger Causality in International Stock Markets

This paper analyzes the process of stockmarket globalization on the basis of cointegration andGranger causality tests. Granger causality is based onregression modelling and typically captures current andpast causal relationships in the data. The dataset used inour empirical analysis was drawn from DataStream andcomprises the natural logarithm of relative stock marketindexes since 1973 for the G7 countries. The main resultspoint to the conclusion that significant causal effectsoccur in this context with well-defined causal directions.There is also evidence that stock markets are closelyrelated in the long-run over the 36 years analyzed and, inthis sense, one may say that they are globalized. Asexpected, there is evidence that the US stock marketdominates in general over the remaining markets.
The Analysis of MIS Collaboration Research Networks and Research Issues Structure: The Example of MIS Quarterly Journal

The development of theoretical diversities within management information systems (MIS) discipline has been a constant focus and a frequently discussed issue. Those studies provide a developing pattern for the readers and researchers to track and understand the evolution of information technology and management subjects. Furthermore, the results can be a guidebook for future trends of information management researches. In this research, we collected the authors and keywords from the most prestigious journal in MIS research domain, MISQ, from 1977 to 2007, as the source of data sample. Using social network analysis (SNA) for mapping out the Journal's author collaboration network over time and classifying each article through their keyword-hierarchical structure, we exemplified the development of research communities and referenced domains. While limited by the sampled data, the results of our findings indicated that the structure of co-author research communities fits a scale-free distribution model, a preferential attachment process, in the first decade of these research collaborations. And the research communities developed a stable small-world structures/communities over time, and many distinct clusters are connected to each other by a rather small number of links, since 1997. We conclude by applying the trends of co-author relationship in each MIS sub-domain to provide a new aspect to observe and understand the development of various MIS subjects.
Geospatial analysis of habitat use by silver hake Merluccius bilinearis in the Gulf of Maine

Three theories of habitat use proposed for marine fishes, the constant density model (CDM), the proportional density model (PDM), and the basin model (BM), make contrasting pre- dictions of how the range, local density, and fitness change as population size changes. We tested model predictions using a survey of silver hake Merluccius bilinearis conducted by the National Marine Fisheries Service every spring and fall. Data on fish length, sex, weight, and reproductive status are collected. Despite a 50% population reduction over the time period of the survey, the geographic area occupied by silver hake did not change significantly. Local density in preferred habitat remained a constant proportion of the entire population. Fitness (as indicated by individ- ual condition) varied over a fine spatial scale, reflected in a pattern of spatial autocorrelation of 10s to 100s of kilometers. Fitness did not exhibit density dependence, except in one case, females in the fall, probably due to the higher energy needs of the females. The results indicate that silver hake conform to the PDM, a site-dependent model, and yet we found some evidence of density dependence in our measure of fitness. Site dependence may work in concert with density depend- ence to regulate population size. Sites silver hake depend on may be the spawning areas along the coast, which may already be in legislatively protected areas. Our study illustrates that an under- standing of habitat use is important for crafting conservation or management measures that lead to maintenance of a stable population.
Anthropogenic and forest fire pollution aerosol transported to the Arctic: observations from the POLARCAT-France spring campaign

During the POLARCAT-France airborne measure- ment campaign in spring 2008, several pollution plumes transported from mid-latitude regions were encountered. The study presented here focuses on air masses from two differ- ent geographic origins (Europe and Asia) and from 2 differ- ent source types (anthropogenic pollution and forest fires). A first case study is dedicated to a European air mass, which was repeatedly sampled and analysed during three consec- utive days. Thereby, the evolution of the aerosol properties (size distributions, CO mixing ratio) is characterised and re- lated processes are discussed. In particular, the role of coag- ulation, condensation and cloud processing in the evolution of the Aitken and the accumulation mode particles are con- trasted. A second case study focuses on European air masses impacted solely by biomass burning emissions and Asian air masses with contributions from both biomass burning and anthropogenic emissions. The analysis of aerosol modes highlight a similar behaviour for particle originating from biomass burning (from Europe as well as Asia). In com- parison to the predominating aged accumulation mode in biomass burning particles, a still larger aerosol accumulation mode related to Asian anthropogenic emissions can be iso- lated. These findings corroborate the external mixing of such kind of aerosol size distributions. An electron microscopy study (coupled to X-ray elemental analysis) of particles il- lustrated soot-like inclusions in several samples. Within sam- ples attributed to forest fire sources, the chemical signature is highly associated with the presence of potassium, which is a characteristic tracer element for biomass burning plumes. The single particle images suggest an internal mixing of sam- pled individual aerosol particles. Thus, particles are found externally mixed as demonstrated from particle size distribu- tions while they appear internally mixed at the particle scale.
Preschool Children’s Emotional and Behavioral Descriptions of Events1

Preschool-aged children already show interest in other people’s mental states. The goal of the present research was to investigate if this interest is refl ected on four to six year-old children’s preferences for either emotional or behavioral descriptions of events, and whether there is a correlation between those preferences and their emotion understanding. Thirty seven children (21 girls and 16 boys) were asked to describe four different movie scenes and their understanding of emotions was assessed. The results revealed an effect of age on the frequency of emotional descriptions, F(2, 34) = 6.7, p < 0.01, as well as a correlation between the frequency of emotional descriptions and participants’ level of emotion understanding (r = 0.55, p < 0.001). These results are consistent with evidence suggesting an increase in the spontaneous production of emotion terms in the preschool years.
The use of the Cytogenetic to Identify Mechanisms of Action of an Azo Dye in Allium Cepa Meristematic Cells

In the present study, cytotoxic, genotoxic and mutagenic actions of different concentrations (1, 10, 100 and 1000 μg/L) of an azo dye (BDCP – Black Dye Commercial Product) were evaluated using different cytogenetic techniques [(conventional dye, C banding, NOR banding, base-specific fluorochrome banding and fluorescent in situ hybridization (FISH)] applied to the Allium cepa test-organism. The use of conventional cytogenetic staining allowed us to determine that the azo dye induced cell death, chromosomal aberrations, nuclear alteration and micronuclei. By means of chromosome bandings and the FISH technique, it was possible to notice both cell and nucleolar alterations induced by BDCP, whose effects, in a general way, were not specific for any chromosome sites. The abnormalities observed made it possible to infer both aneugenic and clastogenic actions caused by the dye analyzed. The cytotoxic, genotoxic and mutagenic effects of BDCP were not completely eliminated, even after the recovery treatment of the A. cepa roots in water, showing a cumulative potential effect of the referred dye. Due to these results, we could infer that the BDCP may be a dangerous contaminant to the environment and, consequently, to the lives of the organisms exposed to it.
Seasonal movements and distribution of Dungeness crabs Cancer magister in a glacial southeastern Alaska estuary

The movements of 10 female and 8 male adult Dungeness crabs, Cancer magister (Dana, 1852), were monitored biweekly to monthly with ultrasonic biotelemetry for periods ranging from 73 to 555 d. Female and male crabs had different seasonal patterns of habitat use, depth distri- bution, and activity. The general pattern for female crabs was: (1) a relatively inactive period between November and mid-April at depths below 20 m; ovigerous crabs were typically buried dur- ing this period in a dense aggregation; (2) abrupt movement into shallow water ( 40 m) from November to April, then concentrated in shallow water ( 30 m) near the mouth of the cove in fall. The range of depths were -0.5 to -61.3 m for females and +0.1 to -89.0 m for males. Female crabs showed fidelity to the head of the cove and typically ranged only 1.5 km from there. Male crabs, however, moved up to 7.2 km from the head of the cove, but did not move close to the nearest established population of Dungeness crabs 9.6 km distant. The discrete population of adult Dungeness crabs in Fritz Cove may be representative of most Dungeness crab populations inhabiting shallow embayments of the coastal fjord system of southeastern Alaska.
Impact of Crustose Clionid Sponges on Caribbean Reef Corals

Some species of limestone-excavating Porifera (Clionidae, Hadromerida) cover their substrate as a thin, continuous, veneer-like crust (beta stage). This film of tissue is the result of fusion of the initially discrete incurrent and excurrent papillae (alpha stage) that are the common and lifelong morphological feature of most other representatives of the family. In the tropical and subtropical western Atlantic, at least four species of clionids encrust reef-coral skeletons (Scleractinia, Hydrozoa): Cliona caribbaea CARTER (including C. aprica PANG and C. langae PANG), C. delilrix PANG, C. lampa de LAUBENFELS, and C. varians (DUCHASSAING and MICHELOTTI) (=Anthosigmella varians of authors). One conspicuous feature of these encrusting sponges is that many border live coral or cover recently dead coral as indicated by the clear outline of the coral calicular structure under the thin sponge veneer. Field experiments and histological study conducted on Cliona caribbaea in Belize and Cliona lampa in Bermuda indicate that the sponges overpower stressed coral which they overgrow at a fast rate. Stress parameters include extended periods of above-average water warming or below-average water cooling, excess of suspended sediments, organic pollution, and physical damage inflicted hy fish bites, anchors, and other means. Clionids do not seem to produce toxic compounds that affect virile coral colonies and are repelled hy healthy coral polyps. Overgrowth is accomplished by excavating coral calyces from below the surface, thus depriving the polyps of their suppon, or by covering skeletons of dying coral. Overpowering corals hy bioerosion is a successful competitive mechanism that works also on unstressed coral, albeit at a much slower pace. On the other hand, also non-boring encrusting sponges may overgrow coral by lateral spreading, for instance the symbiotic (with cyanobacteria) species of Chondrilla and Terpios, panicularly if sponge growth is stimulated and coral resistance weakened by elevated levels of pollution. There are indications that encrusting clionids and other sponges may dramatically change the community structure and physical stability of shallow reefs that are readily compromised by natural or anthropogenic pressures.
More Woodiness/Less Woodiness: Evolutionary Avenues, Ontogenetic Mechanisms

Early angiosperms were minimally woody; increase in woodiness and changes in wood histology yielded trees, lianas, and shrubs in various clades. Many eudicot herbs have been derived from variously woody ancestors. Some of those derivatives have, at various stages, evolved secondary woodiness to various degrees. Categories of information by which we can trace these progressions are presented: length-on-age curves for vessel elements, perforation plate morphology, ray histology, DNA-based phylogenies, geological and ecological factors, dispersal capabilities, and speciation ability. Trajectories that angiosperms have followed are analyzed in terms of growth forms: sympodial habits, cane shrubs, lianas, trees, various herb-related forms, stem succulents, and plants with successive cambia. Phylogenetic modalities that are related to degree of woodiness are discussed: retention of and departure from juvenile wood features in basal angiosperms, overlay effects (additive or modifying effects of factors on woodiness), character independence and interdependence, and degrees and types of transitions between more woodiness and less woodiness. Production of procumbent ray cells (which excel at radial conduction) is the result of not just subdivision of ray initials but also infrequent tangential divisions in ray initial derivatives. In juvenilistic woods, this process runs in parallel with shortening of fusiform cambial initials, but in woodier species, fusiform cambial initials become longer over time whereas ray initials become vertically shorter. Examples and original information on eudicot woods are mostly from orders and families of the campanulid clade. Juvenile features are multiple, with each capable of being retained, modified, or lost independently. This article takes the form of an eclectic essay that includes original data and observations, hypotheses, and critiques as well as presenting questions and syntheses, and it supplements previous articles by the author.
DESIGN-OUT MAINTENANCE ON FREQUENT FAILURE OF MOTOR BALL BEARINGS

Availability of mechanical equipment is a function of its reliability and maintainability. Reliability of equipment, at any instant of time signifies the probability of its survival. Classically, the reliability is an equipment design attribute. It is, however, experienced that reliability of equipment is also dependent on how well the equipment has been shaped-up in the chain of processes from design to commissioning. A case study on design out maintenance on frequently failing bearings of a pump-motor set, which showed poor reliability, is discussed. A step wise analysis is detailed in this paper. The analysis showed that improper inspection post-manufacturing or lack of emphasis on the manufacturing drawings issued by the design department can lead to low equipment reliability and can create field problems for maintenance personnel. It is suggested that an analytical approach to maintenance culminates into design out maintenance, thereby increasing reliability and availability. The design out maintenance approach applied to the case study increased the mean time to failure of bearings from 37 days to 2066 days. This shows that DOM is capable of significantly reducing operation costs of an organization.
Kinematics of the inner thousand AU region around the young massive star AFGL 2591-VLA3: a massive disk candidate?

Context. Recent detections of disks around young high-mass stars support the idea of massive star formation through accretion rather than coalescence, but the detailed kinematics in the equatorial region of the disk candidates is not well known, which limits our understanding of the accretion process. Aims. This paper explores the kinematics of the gas around a young massive star with millimeter-wave interferometry to improve our understanding of the formation of massive stars though accretion. Methods. We use Plateau de Bure interferometric images to probe the environment of the nearby (similar to 1 kpc) and luminous (similar to 20 000 L-circle dot) high-mass (10-16 M-circle dot) young star AFGL 2591-VLA3 in continuum and in lines of HDO, (H2O)-O-18 and SO2 in the 115 and 230 GHz bands. Radiative transfer calculations are employed to investigate the kinematics of the source. Results. At similar to 0.5 '' (500 AU) resolution, the line images clearly resolve the velocity field of the central compact source (diameter of similar to 800 AU) and show linear velocity gradients in the northeast-southwest direction. Judging from the disk-outflow geometry, the observed velocity gradient results from rotation and radial expansion in the equatorial region of VLA3. Radiative transfer calculations suggest that the velocity field is consistent with sub-Keplerian rotation plus Hubble-law like expansion. The line profiles of the observed molecules suggest a layered structure, with HDO emission arising from the disk mid-plane, (H2O)-O-18 from the warm mid-layer, and SO2 from the upper disk. Conclusions. We propose AFGL 2591-VLA3 as a new massive disk candidate, with peculiar kinematics. The rotation of this disk is sub-Keplerian, probably due to magnetic braking, while the stellar wind may be responsible for the expansion of the disk. The expansion motion may also be an indirect evidence of disk accretion in the very inner region because of the conservation of angular momentum. The sub-Keplerian rotation discovered in our work suggests that AFGL 2591-VLA3 may be a special case linking transition of velocity field of massive disks from pure Keplerian rotation to solid-body rotation though definitely more new detections of circumstellar disks around high-mass YSOs are required to examine this hypothesis. Our results support the idea that early B-type stars could be formed with a circumstellar disk from the point of view of the disk-outflow geometry, though the accretion processes in the disk need to be further investigated.
Chaos in the solar system

We have accumulated thousands of orbits of test particles in the Solar System from the asteroid belt to beyond the orbit of Neptune. We find that the time for an orbit to make a close encounter with a perturbing planet, Tc,is a function of the Lyapunov time, Tty.The relation is log (Tc/To)= a + b log (TlyTo)where Tois a fiducial period which we have taken as the period of the principal perturber or the period of the asteroid. There are exceptions to this rule interior to the 2/3 resonance with Jupiter. There, at least in the restricted problem, for sufficiently small Jupiter mass, orbits may have a positive Lyapunov exponent and still be blocked from having a close approach to Jupiter by a “zero velocity curve”. Of more serious concern is whether the relation holds for purely secular resonances, and if it does, how to choose To.This is the case of interest for the planets in the solar system.
Bagging-Based Logistic Regression With Spark: A Medical Data Mining Method

Medical data in various organizational forms is voluminous and heterogeneous, it is significant to utilize efficient data mining techniques to explore the development rules of diverse diseases. However, many single-node data analysis tools lack enough memory and computing power, therefore, distributed and parallel computing is in great demand. In this paper, we propose a comprehensive medical data mining method consisting of data preprocessing and bagging-based logistic regression with Spark (BLR algorithm) which is improved for better compatibility with Spark, a fast parallel computing framework. Experimental results indicated that although the BLR algorithm took a little more duration than logistic regression (LR), it was 2.12% higher than LR in accuracy and outperformed LR with other common evaluation indexes.
Eliciting and Assessing Reflective Practice: A Case Study in Web 2.0 Technologies.

This paper focuses on the role of multimodal technologies in facilitating reflective processes and the subsequent assessment of reflectivity for students in pre-professional programs. Reflective practice has been established as a critical tool for developing identity in and on practice. This paper will focus firstly on reviewing salient literature about reflective practice and its use with pre-professional teachers. It will then report the processes and outcomes of the authors’ practices, as supported by the literature. Various reflective practices will be examined and explained. The role of the E-Portfolio (Electronic Portfolio) as the vehicle for housing student reflective practice will be briefly explored and the process for using author-developed rubrics for assessing levels of reflective practice will also be shared. Suggestions for replication in other disciplines, while being implicit, will also be made explicit. Authentic and principled reflective thinkers know how to make meaning across their experiences and use their emerging understandings to advance their learning. This paper explores the potential of rethinking pedagogy given web 2.0 technologies that allow us to question, re-imagine, and leverage the roles of audience, voice, and identity in fostering students’ reflective practice. Following discussion of relevant literature across several fields, the current paper will share examples of “multimodal” reflective practice and evaluative rubrics used to assess student work and growth. Exploration will include design and application of assessment rubrics and engagement with the web 2.0 tools. Key strategies of evaluating reflective material will be identified and shared using examples from across several disciplines. The relevant literature and theoretical supports for the use of reflective practice, and E-Portfolio as a vehicle for reflective practice, will be briefly overviewed. Review of the Literature
Building Social Scenarios. Self-Fulfilling Prophecies In The Terrorist Attacks In France

In nowadays Europe, a wind of terror, of an intensity comparable to that of the belligerent periods, walks freely and occasionally strikes the apparent tranquility of our lives. Islamic fundamentalist attacks, seemingly coming from nowhere, without prior psychological preparation manage to create hardly measurable effects. Media and, consequently, public opinion resonate dramatically to a reality that is destabilizing the social, political, economic, cultural, individual or group balance in many parts of this bewildered and concerned Europe. It is a tense context, in which fear and terror annihilate rationality and freedom of expression being able to maintain a toxic atmosphere of information, and independent media can serve conjecturally, unintentionally even to the harmful interests of those terrorist groups.