Miracle-dz/UniFAR-FTUs huggingface dataset:
Study of Structural Changes of Water-Based Magnetic-Fluid by Acoustic Spectroscopy

The effect of an external magnetic field on the changes in structural arrangement of magnetic nanoparticles in water based magnetic fluid was studied by acoustic spectroscopy. When a magnetic field is increased, the interaction between the magnetic field and the magnetic moments of nanoparticles leads to the orientation of magnetic nanoparticles and their following aggregation to long chains that cause the increase of acoustic attenuation. The attenuation of acoustic waves measured for jump changes of the magnetic field to 100, 200, and 300 mT at temperature 20 ◦C showed that the changes of acoustic attenuation increased slowly to a stabilized state that after switching off the magnetic field decreased immediately to initial value. The dependence of attenuation of acoustic waves at constant magnetic field on angle between the wave vector and direction of the applied magnetic field (attenuation anisotropy) has been measured, too. The measured anisotropy of acoustic attenuation attested structural changes of magnetic fluid in the magnetic field.
Real-time error detection for a rowing training system

The use of coaches in training provides several advantages to the skill transfer process. However, their use is limited because of cost reasons. Automatic recognition processes, on the other hand, have a vastly lower cost ratio and can replace or integrate many of the functions otherwise performed by a human. The paper presents an effective design of a real-time error recognition system for rowing in a simulator. It was designed in order to be easy to develop, be computationally efficient and offer an excellent classification ability.
Effects of Macro- and Microelements in Soil of Rose Farms in Taif on Essential Oil Production by Rosa damascena Mill.

Rose is one of the most economically important ornamental crops in the world. In this study, we analyzed nine macro- and microelements in soils and petals of R. damascena Mill. cultivated in Shafa and Hada mountains. The amounts of the investigated macro- and microelements varied from one soil or petal sample to another and they were generally higher in most soil and petal samples of Shafa compared to Hada. On the other hand, the levels of the investigated elements in petal samples were not dependent on their levels in soil samples. While water extracts of the soil of farms of Shafa were slightly alkaline (pH 7.69), they were moderately alkaline (pH 8.04) in Hada farms. The amounts of oil produced by rose petals of Hada were relatively larger than those of Shafa. Amongst the five investigated constituents of the volatile oil of roses, the amounts of citronellol, geraniol, and eugenol were significantly larger in the volatile oil of rose petals of Hada compared to Shafa. This study suggests that the ecology of roses of both Hada and Shafa mountains is different and this is most likely reflected on the amount of volatile oil and its constituents. Therefore, further integrated multidisciplinary research correlating rose ecology, agronomy, and essential oil yield is highly recommended.
Marketing Innovation Influences on Market and Customer Related Performances: Evidences of Korean Manufacturing Companies

The marketing related literatures emphasize the key role of marketing for companies performances. However, not much attention has been paid to marketing innovations and their performances. Focusing on 2,149 Korean manufacturing companies, this paper examines the factors that influence companies’ marketing innovation decisions and marketing performances by using the Heckman selection model for addressing the sample bias problem. Three key findings have been derived. First, by categorizing market orientation among the three components-customer orientation, competitor orientation, inter-functional coordination, the findings show that customer orientation enhances marketing performance, but does not influence marketing innovation decision. On the other hand, both competitor orientation and inter-functional coordination have positive influences on the marketing innovation decision, but not on marketing performance. Second, marketing innovation activities such as product design, promotion, placement, and price help to enhance marketing performance. Third, the factors that influence marketing innovation decision and their performance are different depending on technological level of an industry. The results suggest that the marketing related activities are more important in high-tech rather than in low-tech industries.
How do the board characteristics influence the firm performance

ABSTRACT, This paper studies whether specific board characteristics are important for the firm performance of Dutch listed firms. It investigates the impact of the age diversity, the national background, gender diversity and the amount of board members on the firm performance, measured by ROA and P/B-ratio. The analysis is done for the supervisory board, the management board and the total board. In conclusion this paper provides some evidence that the gender characteristics of board members would influence the firm performance of these Dutch listed firms.
Optimization of culture conditions for bioethanol fermentation in oil palm fronds juice concentrates via Box-Behnken design

Response surface methodology via Box-Behnken design was used to evaluate the effect of culture conditions on bioethanol production by Kluveromyces marxianus in oil palm frond juice concentrate. In this study, the tested parameters were agitation speed, incubation temperature, inoculum size, pH, and initial glucose concentration; the responses were bioethanol yield and biomass. The optimum culture conditions obtained from the response surface analysis were agitation speed 117 rpm, incubation temperature 35 °C, inoculum size 4.0% (v/v), pH 6.59, and initial glucose concentration 44 g L -1 , respectively. Under these conditions, the experimental data for bioethanol yield (0.47 g g -1 ) and biomass (5.61 g L -1 ) were close to the predicted values.
Is it essential to perform preoperative diagnostic curettage in patients scheduled for uterine myoma surgery

Objective: Uterine myoma, which arises from the myometrium of uterus, is among the most common benign tumors of women. Generally, it has an asymptomatic character, however, in symptomatic cases, it presents with abnormal uterine bleeding. The objective of this study is to determine whether preoperative diagnostic curettage is essential or not by comparing the preoperative and postoperative endometriums of patients that underwent surgery with uterine myoma diagnosis. Material and Method: In this study,260 patients that received surgery with uterine myoma diagnosis in the Gynecology and Obstetrics Department of Taksim Education and Research Hospital in Istanbul between January 2007 and January 2010, were included. The histopathologic analysis of specimens obtained by preoperative curettage and hysterectomy, was carried out in a retrospective fashion.
Job Satisfaction of Female and Male Superintendents: The Influence of Job Facets and Contextual Variables as Potential Predictors.

A descriptive multiple regression approach was used to assess the job satisfaction of female and male public school superintendents taking part in a decennial survey conducted by AASA. Self-reported job satisfaction of public school superintendents was regressed on their affective reactions to specific job facets (supervision, co-workers, and compensation) and to contextual variables (type of school district, legislative mandates, and funding sources) purported to influence their job satisfaction. Results indicate that female and male superintendents were found to be similarly satisfied with their current job assignment but for different reasons as revealed by interaction terms addressed in the regression analyses.
Ecological Impacts of the 2005 Red Tide on Artificial Reef Epibenthic Macroinvertebrate and Fish Communities in the Eastern Gulf of Mexico

A harmful algal bloom (red tide) and associated anoxic/hypoxic event in 2005 resulted in massive fish kills and comparable mortality of epibenthic communities in depths 50%, with significant reductions in the abundances of most species. Successional stages were monitored over the next 2 yr; stages tended to follow a predictable progression and revert to a pre-red tide state, corroborating previous predictions that the frequency of disturbance events in the shallow eastern Gulf of Mexico may limit the effective species pool of colonists. Substantial recovery of the benthos occurred in 2 yr, which was more rapid than predicted in previous studies.
Multifaceted Role of a Marvel Golden Molecule, Curcumin: a Review

Curcumin is chemically known as diferuloylmethane, which is an important nutraceutical obtained from the yellow spice Curcuma longa. It has been used traditionally as a folklore medicine in countries like India, China and Thailand for nearly 2000 years without any prior knowledge of the mechanism of action. Cell-based studies and clinical trials that have been reported so far have provided evidence that curcumin could be effectively used as antimicrobial, anticancer, antidiabetic, antiinflammatory, antimalarial and antioxidant. There are more than 9400 articles published on this “magical molecule” till date. Furthermore, nearly 100 clinical trials have been done using curcumin, which demonstrated safety, efficacy and prophylactic activity of curcumin. On the molecular level, curcumin has shown to modulate several crucial and significantly interlinked pathways in rendering an optimistic outcome against life-threatening diseases like cancer, diabetes, lupus nephritis, and other autoimmune and neurodegenerative diseases. In this communication, the chemical structure, biological properties and possible molecular targets of curcumin have been reviewed along with some recent developments in drug delivery systems of curcumin.
Geometric phase as entanglement probe in a pumped three-level atom placed near a dielectric

We introduce new features of the connection between entanglement induced by interaction and geometric phase acquired by a composite quantum system. Geometric phase, that reflects Bell angle between input and output photons in atom-cavity interaction, for a bipartite system under the inuence of a dielectric of Lorentzian permitti vity, is examined. We show that, with adjustment of Bell angle, typical features of atom-cavity entanglement can be obtained by considering a three- level appropriately positioned with respect to macroscopic bodies. We find that, due to the strong non-Mark ovian memory effects, phase Rabi oscillations, a principal signature of strong symmetrically or antisymmetrically photons evolution, ar e stimulated with atom farther from a medium with low oscillation frequency. On death of Rabi oscillations, which means symmetric entangled photons, a strong long-time-scale atom-cavity entanglement can be produced, specially, below the band gap region where the radiative decay dominates. This feature conicts the case of pure vacuum where atom-cavity entanglement decays exponentially. The feature that, our system is acting as a beam splitter (BS), is also, in detail, discussed. The results are of strong applications in constru ction of the universal quantum logic gates.
Effects of fosfomycin on Shiga toxin-producing Escherichia coli: quantification of copy numbers of Shiga toxin genes and their expression levels using real-time PCR Antibiotic therapy for infection with Shiga toxin-producing Escherichia coli

Right This is an author manuscript that has been accepted for publication in Journal of Medical Microbiology, copyright Society for General Microbiology, but has not been copy-edited, formatted or proofed. Cite this article as appearing in Journal of Medical Microbiology. This version of the manuscript may not be duplicated or reproduced, other than for personal use or within the rule of ‘Fair Use of Copyrighted Materials’ (section 17, Title 17, US Code), without permission from the copyright owner, Society for General Microbiology. The Society for General Microbiology disclaims any responsibility or liability for errors or omissions in this version of the manuscript or in any version derived from it by any other parties. The final copy-edited, published article, which is the version of record, can be found at http://jmm.sgmjournals. org, and is freely available without a subscription. NAOSITE: Nagasaki University's Academic Output SITE
On the front line: integrated habitat mapping for olive ridley sea turtles in the southeast Atlantic

Knowledge and understanding of marine vertebrate spatial ecology are required to identify sources of threat and highlight areas for conservation. Olive ridley sea turtles Lepidochelys olivacea are in decline in some regions, and data for the Eastern Atlantic are sparse. Here, we seek to describe observed, and potential, post‐nesting habitats for this species in the southeast Atlantic. We contextualize these with fisheries catch data to identify areas of potential threat from fisheries interaction for this species.
Removal of nitrogen from anaerobically digested swine wastewater using an anoxic/oxic (A/O) process complemented with a sulfur-packed biofilter

-N in the effluent of the anoxic reactor was removed by the sulfur-packed biofilter with the stable effluent concentrations between 0.4 and 4 mg/l. This result indicates that the sulfur-packed biofilter would be used as an efficient option for denitrification by autotrophic denitrifiers during swine wastewater treatment.
Generalized Incremental Mechanisms for Scheduling Games

We study the problem of devising truthful mechanisms for cooperative cost sharing games that realize (approximate) budget balance and social cost. Recent negative results show that group-strategyproof mechanisms can only achieve very poor approximation guarantees for several fundamental cost sharing games. Driven by these limitations, we consider cost sharing mechanisms that realize the weaker notion of weak groupstrategyproofness. Mehta et al. [Games and Economic Behavior, 67:125–155, 2009] recently introduced the broad class of weakly group-strategyproof acyclic mechanisms and show that several primal-dual approximation algorithms naturally give rise to such mechanisms with attractive approximation guarantees. In this paper, we provide a simple yet powerful approach that enables us to turn any r-approximation algorithm into a r-budget balanced acyclic mechanism. We demonstrate the applicability of our approach by deriving weakly group-strategyproof mechanisms for several fundamental scheduling problems that outperform the best possible approximation guarantees of Moulin mechanisms. The mechanisms that we develop for completion time scheduling problems are the first mechanisms that achieve constant budget balance and social cost approximation factors. Interestingly, our mechanisms belong to the class of generalized incremental mechanisms proposed by Moulin [Social Choice and Welfare, 16:279–320, 1999].
Model complexity of a cantilever beam: an energy-based approach

The cantilever beam is a component widely used in numerous engineering systems with its geometric and material properties varying depending on the application. Calculating the dynamic behavior of a cantilever beam is a challenging task since the critical physical phenomena and interactions vary significantly based on the geometry of the beam. There exist a number of theories/models that can be used to predict the transverse motion of a cantilever beam of which the two most commonly used are the Timoshenko and Euler-Bernoulli theories. The Euler-Bernoulli theory is simpler and thus preferred, however, depending on the beam’s parameters and operating conditions this model can lead to erroneous results and thus the more complex Timoshenko theory must be used. Currently, selecting the theory to use depends on heuristics or rules that are based on experience and the accuracy requirements of the predictions. It is the purpose of this paper to address the model complexity of a cantilever beam through a systematic modeling methodology. The paper presents a new approach for selecting the appropriate theory to use in modeling a cantilever beam. The beam is discretized through the finite segment approach and modeled using the bond graph formulation. The previously developed activity metric is then used to determine which of the inertial and stiffness effects, of the more complex Timoshenko theory, need to be included in the model in order to have accurate predictions of its dynamic behavior. An illustrative example is provided to demonstrate the new methodology.
Improving the osteoblast cell adhesion on electron beam controlled TiO 2 nanotubes

Here we investigate the osteogenesis and synostosis processes on the surface-modified TiO2 nanotubes via electron beam irradiation. The TiO2 nanotubes studied were synthesized by anodization process under different anodizing voltage. For the anodization voltage of 15, 20, and 25V, TiO2 nanotubes with diameters of 59, 82, and 105nm and length of 115, 276, and 310 nm were obtained, respectively. MC3T3-E1 osteoblast cell line was incubated on the TiO2 nanotubes to monitor the change in the cell adhesion before and after the electron beam irradiation. We observe that the electron beam irradiation affects the number of surviving osteoblast cells as well as the cultivation time. In particular, the high adhesion rate of 155% was obtained when the osteoblast cells were cultivated for 2 hours on the TiO2 nanotube, anodized under 20 V, and irradiated with 5,000 kGy of electron beam.
On-line tracking of manoeuvring and ballistic targets via angle of arrival and Doppler measurements taken by a transmitter-independent receiver network using first order recurrent linear neural networks

A totally passive multistatic radar or Transmitter-Independent Receiver Network (TIRN) [1], can be defined as a number of independent bistatic receivers [2], connected to a communication network, in order to detect and track targets in their coverage area using the signal(s) of non-cooperative transmitter(s). In this paper, an Angle of Arrival (AOA) method of transmitter and target detection is investigated. Linear systems of equations are extracted, and then solved by recurrent Artificial Neural Networks (ANN) for detection and tracking of moving and ballistic targets. These linear systems are often over determined by using a redundant number of receivers in order to achieve a minimal false alarm probability and increase the survivability of the TIRN. Finally it is shown that practical ANN designs are attractive and simple solutions for an AOA based TIRN for moving target tracking purposes, combining fast and robust convergence, ease of design and construction and - in case of adequate redundancy - adequate survivability.
Male and female speech: a study of mean f0, f0 range, phonation type and speech rate in Parisian French and American English speakers

Many studies have been conducted on acoustic differences between female and male speech. However, they have generally been led on speakers of only one language, and have focused on a single acoustic parameter. The present study is an acoustic analysis of dissyllabic words or pseudo-words produced by 10 Northeastern American English speakers (5 females, 5 males) and 10 Parisian French speakers (5 females, 5 males). Several prosodic parameters were measured: mean f0, f0 range, phonation type (through H1-H2 intensity differences) and words' duration. Significant cross-gender differences were obtained for each tested parameter. Moreover, cross-language variations were observed for f0 range, and H1-H2 differences. These results suggest that cross-gender acoustic differences are partly language-dependent and could be socially constructed.
Managing malaria in under-fives : Prompt access, adherence to treatment and referral in rural Tanzania

Background: Nearly a million people die of malaria each year, the majority are children in rural African settings. These deaths could be reduced if children had prompt access to artemisinin-based combination therapy (ACTs), demonstrated adherence to treatment and to referral advice for severe malaria. However, health systems are weak to deliver the interventions. Although many African countries, including Tanzania, changed malaria treatment policy to ACTs in the last decade, few children reportedly get prompt access to ACTs. Main aim: To determine factors influencing prompt access to effective antimalarials; adherence to treatment schedules and to referral advice among children under five, in rural settings. Methods: Community-based studies were conducted in rural villages in Kilosa (I,II) and Mtwara rural (II,IV) districts, in Tanzania. Study I and II were prospective designed while study III and IV were nested in a community-based rectal-artesunate deployment intervention study. In study I, a total of 1,235 children from 12 randomly selected villages were followed up for six months. Caretakers of children reported to have fever were interviewed at home about the type and source of treatment using a questionnaire. In study II, all children (3918) in five selected villages were followed-up for 12 months, to determine adherence to treatment when they had malaria, diagnosed using Rapid Diagnostic Test (RDT) and treated with artemether-lumefantrine (ALu). In study III, 587 children who received pre-referral rectal artesunate during the deployment study were traced home and caretakers interviewed on a number of factors likely to influence adherence to referral advice, using a questionnaire. Study IV was qualitative, 12 focus group discussions were conducted in three purposively selected villages to explore reasons for non-adherence to referral
Bolides in the present and past martian atmosphere and effects on cratering processes

Abstract— We investigate the action of the martian atmosphere on entering meteoroids for present and past atmospheres with various surface pressures to predict the smallest observable craters, and to understand the implications for the size distributions of craters on Mars and meteoroids in space. We assume different strengths appropriate to icy, stone, and iron bodies and test the results against available data on terrestrial bolides. Deceleration, ablation, and fragmentation effects are included.
HVDC Circuit Breakers for HVDC Grid Applications

High Voltage Direct Current (HVDC) transmission has been expanding due to rapid development of power electronics technology and by the need for connection of offshore/remote wind farms and large hydro power generators. An HVDC grid will be required to operate the healthy lines continuously, even if a voltage collapse occurs at the remote end. Rapid fault clearing is essential for DC Circuit Breaker (DCCB) even though the requirement varies depending on DC transmission system configurations, Voltage Source Converter (VSC) design, transmission capacity, and DC reactor connected in series with the line/cable, etc. In this paper, the requirements for DCCB were analytically evaluated using a four-terminal radial HVDC network model. The results show that DC fault interruption current and fault clearing time are achievable by using a mechanical DCCB with the forced current zero formation scheme. Furthermore, interruption performance of the mechanical DCCB composed of HV vacuum interrupter was evaluated. This DC circuit breaker successfully interrupted a current equivalent of up to 16 kA DC in the laboratory. The prototype adopts forced current zero formation scheme and comprises of a high-voltage AC vacuum circuit breaker at transmission voltages connected to an external capacitor equipped with a triggering gap. A series of interruption tests performed on this breaker verified the clearance of short circuit currents as high as 16 kA DC within a few ms after an opening command.