Miracle-dz/UniFAR-FTUs huggingface dataset:
Efficient Calculation of the Added Mass Matrix for Vibration Analysis of Submerged Structures

This paper presents an efficient way to calculate the added mass matrix used to solve for the natural frequencies and modes of solids vibrating in an inviscid, incompressible infinite fluid. Finite element method is used to compute the vibration spectrum of just the dry structure, and boundary element method (BEM) is then applied to compute the frequencies and modes of the wetted structure. The BEM does not scale well and results in large computing cost. A reduction of the computational cost to compute the added mass was achieved using a coarse mesh in the BEM and subsequent interpolation to compute the pressure modes at the nodes of a fine mesh from the results of a coarse mesh. Although, damping can also influence the frequencies and modes of the submerged structure, the effects of damping are not taken into account in this work to reduce the cost of the computation time. Excitation of the structure by intermodal coupling is also not taken into account.
X-RAYING THE IMPACT OF DOMESTIC AND GLOBAL FACTORS ON STOCK RETURN VOLATILITY IN THE NIGERIAN STOCK MARKET

The study evaluated the impact of domestic and global macroeconomic variables in explaining the movement of returns in the Nigerian stock market. It is an attempt to contribute to the unending search for relationship between stock market and macroeconomic variables on one hand and their volatilities. GARCH and VAR models were utilized to assess the impact of consumer price index, exchange rate, interest rate, money supply (M1 AND M2), industrial production index, federal funds rate and 6-month LIBOR on stock prices in Nigerian stock market. The empirical results revealed that the macroeconomic variables are significant in explaining movements in the stock prices and its volatility. Specifically it was confirmed that both the global and domestic factors are important in explaining the relationship between the stock returns and volatility implying that the Nigerian stock market is partially integrated debunking the controversy about which is more relevanceglobal or domestic factors.
A Modification of Efficacy Coefficient Model for Enterprise Performance Evaluation

Enterprise performance evaluation is a key research area in accounting and finance. Although there are a few methods available many of these are not suitable for China due to its unique political, economic and cultural situations. It is not appropriate for China to directly copy the foreign performance evaluation methods. Therefore, it is urgent for the country to develop a model which is suitable for its current situation and can efficiently evaluate enterprise performance especially for those State-Owned Enterprises. The paper first studies the main enterprise performance evaluation methods and their pros and cons. Then it focuses on the introduction of a comprehensive performance evaluation model which is based on the efficiency coefficient method. After that, a case study of China’s Sinopec is carried out to validate the model. Research findings are discussed and summarized at the end of the paper, together with an outline of future research directions.
JAM SESSION TOOL FOR DEVELOPMENT OF SUSTAINABLE AND INNOVATIVE PROJECTS AND SOLUTIONS

Sustainability Jam sessions are the new and innovative type of workshops that are used primarily for the development of sustainable and environmental projects and products. It was first noticed in music and then spread to different types of other applications. In this essay, it is given a short introduction on what jam session is, followed by its development and history. Main characteristics of a jam session, conditions for jamming, organization and execution of sustainability jam sessions are shortly described and examples of application are listed. Conclusions are drawn from the Jam sessions held on IEE BEAST project where participant provided their view of the usefulness of this tool in developing new project ideas and overcoming obstacles in existing ones.
Comparison of extremes in GCM-simulated, downscaled and observed central-European temperature series

This study concentrates on the comparison of 20 and 50 yr return values of annual max- imum and minimum temperatures in (1) observations, (2) general circulation model (GCM) simulated control climates, (3) statistical downscaling from observations, and (4) statistical downscaling from GCMs. Temperature series at 4 sites in central Europe and in the nearest GCM gridpoints corre- sponding to the stations are analysed. Extreme value analysis was performed by fitting the general- ized extreme value (GEV) distribution using L moment and maximum likelihood estimators. The comparison does not appear to be sensitive to which statistical method of the estimation of para- meters of the GEV distribution is used, although individual return values are influenced by the choice of method. The skill of both GCMs in reproducing extreme high and low temperatures is limited, and statistical downscaling from GCMs tends to improve their performance, although it generally yields extremes that are too moderate compared to observed values (this holds for downscaling both from observations and GCMs). White noise addition in downscaling from observations leads to more real- istic return values of annual maximum and minimum temperatures than variance inflation.
Production and characterization of thermostable xylanase from Bacillus subtilis XP10 isolated from marine water

This study aims is to characterize an efficient bacterium, capable of producing thermostable xylanases. Different bacterial isolates were obtained on medium containing xylan as the sole carbon source from samples collected from Jeddah, Saudi Arabia. Out of 15 xylanase producing isolates, the best xylanase producer was XP10 which was selected for the enzyme production. It was identified based on morphological and some biochemical characters as a species belonging to the genus Bacillus and identified as Bacillus subtilis XP10. Identification was confirmed by 16S rDNA studies and restriction fragment length polymorphism. Factors affecting enzymes production were studied. Maximum xylanase production was 2.82 U/ml obtained at pH 8 for 4 days at 40°C and 120 rpm. The molecular weight of the purified enzyme was 23 kDa. Fivefold increasing in xylanase production was obtained by construction of recombinant Escherichia coli 107 harboring recombinant vector pJET 1.2/blunt/xynA. The purified thermostable alkalotolerant xylanase can be used in the treatment of agricultural wastes as well as in the bioremediation of xylan-containing materials. Keywords : Xylanase, polymerase chain reaction based restriction fragment length polymorphism (PCR-based RFLP), 16S rDNA, sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS PAGE), xynA gene African Journal of Biotechnology Vol. 12(8), pp. 780-790
Percolation Phenomena For New Magnetic Composites And Tim Nanocomposites Materials

This paper presents a theoretical investigation in order to obtain new composite and nanocomposite magnetic industrial materials. The effective conductivity and thermal effective conductivity have been predicted by adding various types and percentages of conductive particles (Al2O3, MgO, ZnO, Graphite etc.) to the main matrices of Epoxy, Iron and Silicon for formulating new composite and nanocomposite industrial materials. The characterization of effective conductivity of new polymeric composites has been investigated with various applied forces, inclusion types and their concentrations. In addition, the effect of inclusion types and their concentrations on the effective thermal conductivities of thermal interface nanocomposite industrial materials has been explained and discussed.
Status of the Calcultta K500 superconducting cyclotron project

The superconducting cyclotron under construction at this Center has Kbend=520 and Kfoc=160. Several parts of the main magnet frame have already been machined. They are undergoing inspection tests at the vendor’s site. Trial windings on a full-scale dummy bobbin are going on to perfect the techniques using an elaborate superconducting coil winding set up at VECC. Fabrication of the RF resonators is also going on. The He liquefier/refrigerator has been installed. Among the other major systems, the cryostat and cryogenic transfer lines are in the process of finalization for awarding the contracts. Several other sophisticated components/parts are being fabricated at VECC or, in some cases, by the industry. Construction of the building and support services is going on full swing. The experimentalists are planning for large scale experimental facilities and are in the process of obtaining funds for the same.
Hybridized Monarch Butterfly Algorithm for Global Optimization Problems

This paper introduces hybridized monarch butterfly optimization algorithm for solving global optimization problems. Despite of the fact that the monarch butterfly optimization algorithm is relatively new approach, it has already showed great potential when tackling NP-hard optimization tasks. However, by analyzing original monarch butterfly algorithm, we noticed some deficiencies in the butterfly adjusting operator that in early iterations exceedingly directs the search process towards the current best solution. To overcome this deficiency, we incorporated firefly’s algorithm search mechanism into the original monarch optimization approach. We tested our algorithm on six standard global optimization benchamarks, and performed comparative analysis with original monarch butterfly optimization, as well as with other five state-of-the-art metaheuristics. Experimental results are promising.
QUALITY OF LIFE QUESTIONNAIRE FOR CHILDREN WITH CEREBRAL PALSY ( CP QOL-CHILD ) : TRANSLATION AND CULTURAL ADAPTATION TO THE BRAZILIAN PORTUGUESE LANGUAGE

The aim of this study was to verify the reliability of the Brazilian Portuguese version of the instrument Cerebral Palsy: quality of life questionnaire for children: primary caregiver questionnaire (CP QOLChild: primary caregiver) translated and culturally adapted. Thus, the translation and cultural adaptation of the instrument was made, and then the procedures to verify its reliability were performed. The translated and culturally adapted questionnaire was answered by 30 caregivers of children with cerebral palsy and interand intra-observer analysis followed. The data allowed the authors to identify an internal consistency rangering from 0.649 to 0.858, intra-observer reliability from 0.625 to 0.809 and inter-observer reliability from 0.498 to 0.903. The analysis suggests that the instrument has acceptable psychometry.
New Media Marketing: The Innovative Use of Technology in NCAA Athletic Department E-Branding Initiatives

With the competitive nature of the entertainment industry, sport organizations are being challenged to identify marketing strategies to improve their brand with consumers. The purpose of the current research was to survey NCAA Division I (FBS and FCS) administrators (N = 152) to gain an understanding of the technologies that athletic department’s value in electronic branding initiatives. In addition to identifying technologies used on athletic department websites, the research also demonstrated that administrators placed the highest level of criticality on social network sites, texting, and video sharing sites when attempting to build brand equity through independent technological mediums.
The effect of 0.5 wt% additions of carbon nanotubes & ceramic nanoparticleson tensile properties of epoxy-matrix composites: a comparative study.

Carbon nanotube (CNT) and ceramic nanoparticles have different effects on the mechanical properties in epoxy nanocomposites. There are several mechanisms that explain how the differences for mechanical properties in these two different reinforcement are. In this study, multi-walled CNT and three different ceramic nanoparticles (Fe2O3, SiO2 and Al2O3) reinforcements on epoxy were examined. The weight percent of these additions were kept to be 0.5 wt% in all the tests. Tensile tests were carried out in order to characterize the mechanical properties. Statistical analysis was carried out to check the reliability of the test results. Fracture surfaces were examined with scanning electron microscope (SEM). Statistical analyses showed that (i) all additions enhanced tensile strength with the largest increase obtained with SiO2 and Fe2O3 nanoparticles, (ii) elongation was not affected by nanoparticle additions, and (iii) highest reproducibility was obtained in Al2O3 reinforced epoxy.
Hands in the Cookie Jar? The Case of Management Buyouts

By investigating the effects of managerial ownership on shareholder wealth gains, this paper studies whether managers expropriate outsider shareholder interests in management buyouts. We find that the transaction premiums are negatively associated with the buyout managers' stock holdings, and positively associated with their option holdings. The negative effect of stock holdings on the premiums is mainly driven by the manager-led buyouts whereas the positive effect of option holdings is mainly driven by the manager-led and manager-participating buyouts. A key implication of these findings is that although acquiring managers seek to appropriate shareholder wealth in management buyouts by means of their stock ownership, managerial options provide a shield protecting shareholder interests from the appropriation.
A Design Inquiry: Bridging Assessment and Curriculum Frameworks to Engage Students in Science Practices

This reflective inquiry delves into the collaborative design process of a technology- based middle school genetics unit. With a lens on science practices, we describe how bridging assessment and curriculum design frameworks can inform decisions in an iterative co-design process. The paper explores the role of these design frameworks in articulating learning goals and outcomes, designing the learning experience to motivate student inquiry, and identifying features of technology tasks and tools to elicit artifacts and evidence. A pilot study with four teachers and 435 students revealed how to enhance elements of the design approach to strengthen the learning goals, improve learning experience s with visualizations, and streamline the flow of the curriculum to emphasize productive patterns of inquiry. Implications of this integrated approach for informing the design of learning environments, the scalability of designs, and teacher practice are discussed.
Discrete-time quadrature feedback cooling of a radio-frequency mechanical resonator

We have employed a feedback cooling scheme, which combines high-frequency mixing with digital signal processing. The frequency and damping rate of a 2 MHz micromechanical resonator embedded in a dc SQUID are adjusted with the feedback, and active cooling to a temperature of 14.3 mK is demonstrated. This technique can be applied to GHz resonators and allows for flexible control strategies.
Assessment of Palatine Suture Maturation By“Black Bone” Rmi-A Preliminary Feasibility Study

Transverse maxillary deficiency is a common orthodontic problem and is often accompanied by unilateral or bilateral posterior crossbite and dental crowding [1]. The best time to do the palatal expansión is in the anterior phase or during adolescence [2-7], since after this phase theremay be a need for a complementary surgery [8] to weaken the bony bases, allowing the expansion.The most common approach is the use of a tooth-supported expander, with or without acrylic [9,10]. Some undesirable effects related to the age are: exaggerated inclination of the posterior teeth and lack of expansion of the middle third of the faceas a result of the palatine and maxillary sutures ossification [3].
Gradient for the acoustic VTI full waveform inversion based on the instantaneous traveltime sensitivity kernels

The instantaneous traveltime is able to reduce the non-linearity of full waveform inversion (FWI) that originates from the wrapping of the phase. However, the adjoint state method in this case requires a total of 5 modeling calculations to compute the gradient. Also, considering the larger modeling cost for anisotropic wavefield extrapolation and the necessity to use a line-search algorithm to estimate a step length that depends on the parameters scale, we propose to calculate the gradient based on the instantaneous traveltime sensitivity kernels. We, specifically, use the sensitivity kernels computed using dynamic ray-tracing to build the gradient. The resulting update is computed using a matrix decomposition and accordingly the computational cost is reduced. We consider a simple example where an anomaly is embedded into a constant background medium and we compute the update for the VTI wave equation parameterized using vh, η and e .
On the Validity of Gamble Tasks to Assess Farmers' Risk Attitudes

This article presents evidence on the stability and behavioural validity of alternative survey mechanisms for eliciting farmers' attitudes towards risk. Three hypothetical instruments are considered that differ in terms of the simplicity, context and payoff scale of the decision presented to respondents. Responses are assessed in terms of their relative ability to explain actual farmer crop insurance purchases. Results indicate that measures of risk attitudes are poorly correlated across alternative mechanisms. The strongest positive evidence of behavioural validity is found for the gamble task explicitly defined in the context and scale of farmers' economic activities pertaining to their insurance purchase decision. (This abstract was borrowed from another version of this item.)
Résumé Une étude des réactions affectives négatives chez les personnes en attente d ’ une chirurgie

Les longues périodes d’attente précédant une chirurgie sont associées à de nombreux effets négatifs. Bien que la dépression et l’anxiété aient fait l’objet d’études chez les patients en attente d’une telle intervention, les anxiétés fondamentales, comme la sensibilité à l’anxiété ou l’anxiété liée à l’état de santé, n’ont pas encore été étudiées. De plus, il existe peu de recherches sur le vécu des patients quant à la gestion de l’attente. Cette étude vise donc à examiner l’ampleur de la sensibilité à l’anxiété, de l’anxiété liée à l’état de santé, de la dépression et de l’anxiété, ainsi que leurs effets sur la capacité d’adaptation face à l’attente, les inquiétudes liées à celle-ci et l’anxiété face à la chirurgie, chez les individus en attente d’une telle intervention. Des personnes en attente d’une chirurgie ont répondu à un questionnaire mesurant ces construits. Les résultats ont révélé la présence d’un taux élevé d’anxiété liée à l’état de santé et de sensibilité à l’anxiété. Une analyse de régression a démontré que l’anxiété liée à l’état de santé et la dépression constituent des variables explicatives uniques pour ce qui est des capacités d’adaptation et que combinées, elles aident à établir le degré d’inquiétude face à l’attente. La sensibilité à l’anxiété et l’anxiété n’ont pas contribué aux prévisions de ces variables. Dans l’ensemble, les résultats suggèrent la nécessité d’accorder plus d’attention aux interventions qui se penchent sur la détresse psychologique vécue pendant le temps d’attente.
Industrial uses of slag (the use and re-use of iron and steelmaking slags)

Abstract Traditionally, iron ore has been reduced with coke in a blast furnace and the hot metal product of the blast furnace containing carbon, manganese, silicon, sulphur and phosphorous, was subsequently refined in a steelmaking furnace. During ironmaking as well as during steelmaking, significant amounts of slag are produced. Two decades ago, more than 13 million tonne (mt) of blast furnace slag and 4 mt of steelmaking slag per annum were produced in the USA alone. It is therefore not surprising that many attempts have been made to re-use iron and steelmaking slags. However, these slags are not merely metallurgical waste products but, on the contrary, their compositions and physical properties are judiciously designed to optimise the operations in the respective metallurgical reactors. The variation in composition and properties of blast furnace slags are largely determined by the gangue in the ore and ash in the coke and much progress has been made in the re-use of such slag. With respect to steelmaking slag, emphasis has in recent years been placed on hot metal treatment before refining and ladle treatment after decarburisation. The bulk removal of silicon, phosphorous and sulphur from the hot metal product of the blast furnace by specially designed slags prior to refining in a basic oxygen furnace, has reduced tap-to-tap time, lowered cost and produced steel of much higher quality. The use of synthetic slags in ladle refining techniques subsequent to decarburisation in the basic oxygen furnace has resulted in reduced hydrogen and nitrogen contents and reduced solute impurities. Moreover, inclusion shape and composition control, again by the use of specially designed slags has led to the achievement of much improved mechanical properties of the steel. In these revised process routes, slags of different compositions are produced in the variety of unit processes and hence the re-use of steelmaking slags has become much more complex. Clearly, a thorough understanding of the design and use of these different slags is a prerequisite to the development of re-use strategies. Japanese steelmakers have spearheaded attempts to reduce slag volumes in the individual unit processes and to strive towards 'slagless steelmaking' by recycling slags internally. Steelmaking slag volumes have been reduced on commercial scale from about 140 kg t−1 steel to 60 kg t−1 steel. Moreover, model predictions have shown that in principle, all slag can be recycled and the phosphorous extracted to produce fertiliser. This development is of particular significance since the supply of low-phosphorous iron ores is diminishing at an ever increasing rate.
The cognitive styles of satisfied decision support systems users: An hypothesis

This paper presents an hypothesis for future testing to examine the relationship between user cognitive style and user satisfaction with Decision Support Systems (DSS). Preliminary research, in which subjects with different cognitive styles were found to have up to 17% difference in levels of satisfaction with a DSS, suggests the theoretical basis for the hypothesis. The DSS facilitated some users’ processes of consciousness, or ways of selecting and forming views of the world, more than others. Some types therefore experienced more satisfaction with the system because the computerised task engaged their most preferred cognitive processes, while other types were forced into their least preferred processes. DSS have certain common characteristic tasks, and it is hypothesised that such tasks will always lead to certain cognitive types experiencing higher satisfaction.
Migration, poverty and housing in Honduras

Welfare comparisons may be sensitive to the assumptions made about economies of scale within households. This paper uses recent advances in sequential stochastic dominance techniques to show how to test for the robustness of poverty and housing quality comparisons to assumptions about economies of scale. The method is applied to a comparison of migrant and non-migrant households in Honduras. While simple comparisons based on per capita income and the estimated rental value of the dwelling suggest that migrants do better than non-migrants for poverty, but worse for housing quality, none of the two groups is found to dominate the other for reasonable welfare thresholds when assumptions regarding economies of scale are relaxed.