Miracle-dz/UniFAR-FTUs huggingface dataset:
Understanding 3 G Mobile Service Acceptance in Ho Chi Minh City , Vietnam

The rapid development of telecommunication and Internet services enables smartphone users to access online services faster and create more demand for using high-speed data services. The third generation (3G) mobile services have become the pioneer for the trend of high speed data transmission for years. This study aims to explore the factors that affect behavioral intention of adopting 3G mobile telecommunications. After implementing a structural equation modeling to analyze the data collection of 223 self-administered correspondents, we found that perceived factors, including ease of use, usefulness and enjoyment have a significantly positive relationship with attitude and while the attitude is positively associated with behavioral intention to use 3G. Based on the results, the research enables us to propose several practical recommendations to 3G providers in Vietnam such as 3G providers should provide more interesting and entertaining contents in their 3G applications and services, which charge appropriate fees and are easy to use for customers. In addition, 3G providers should focus on customers’ attitude by listening and receiving customers’ feedbacks to improve 3G technological solutions and value-added services.
Dynamics and control of resistive wall modes with magnetic feedback control coils: experiment and theory

Fundamental theory, experimental observations and modelling of resistive wall mode (RWM) dynamics and active feedback control are reported. In the RWM, the plasma responds to and interacts with external current-carrying conductors. Although this response is complex, it is still possible to construct simple but accurate models for kink dynamics by combining separate determinations for the external currents, using the VALEN code, and for the plasma's inductance matrix, using an magnetohydrodynamics code such as DCON. These computations have been performed for wall-stabilized kink modes in the HBT-EP device, and they illustrate a remarkable feature of the theory: when the plasma's inductance matrix is dominated by a single eigenmode and when the surrounding current-carrying structures are properly characterized, then the resonant kink response is represented by a small number of parameters. In HBT-EP, RWM dynamics are studied by programming quasi-static and rapid ‘phase-flip’ changes of the external magnetic perturbation and directly measuring the plasma response as a function of kink stability and plasma rotation. The response evolves in time, is easily measured, and involves excitation of both the wall-stabilized kink and the RWM. High speed, active feedback control of the RWM using VALEN-optimized mode-control techniques and high-throughput digital processors is also reported. Using newly installed control coils that directly couple to the plasma surface, experiments demonstrate feedback suppression of the kink instability in rapidly rotating plasmas near the ideal wall stability limit.
Condensation and coagulation sinks and formation of nucleation mode particles in coastal and boreal forest boundary layers

[1] The formation and growth of new particles has been evaluated using a revised version of a simple, but novel, theoretical tool. The concentration of condensable vapors and their source rates has been estimated using the aerosol condensation sink together with the measured particle growth rate. Also, by adding the coagulation sink and the measured formation rate of 3 nm particles, the formation rate of 1 nm particles and their concentration can be estimated. Condensation and coagulation sinks can be obtained from ambient aerosol size distribution data. The method has been applied to analyze the particle formation and growth rates observed during coastal and boreal forest nucleation events. The condensation sinks are typically 4–7 × 10−3 s−1 in the forest and 2 × 10−3 s−1 under coastal conditions, while the coagulation sinks for 1, 2, and 3 nm particles are typically smaller by factors 1.5–2, 5–7, and 11–15, respectively. The measured growth rates are 2–10 nm/h for the boreal forest and range from 15 to 180 nm/h at the coast, corresponding to a vapor concentration of 2–13 × 107 cm−3 and 108 cm−3 to 109 cm−3, respectively. The vapor source rate was 1–2 × 105 cm−3s−1 in the boreal forest and 2–5 × 106 cm−3s−1 in the coastal environment. The estimated formation rate of 1 nm particles in the forest environment was 8–20 cm−3s−1 and 300–10,000 cm−3s−1 at the coast. The concentration of 1 nm particles was estimated to be 2000–5000 and 4 × 104–7 × 106 particles cm−3 in forest and at coast, respectively.
The thick disc component of the Galaxy from near infrared colour-magnitude diagrams

The vertical distribution of K giants stars is analyzed using 2MASS data and a semiempirical method of extracting stellar densities from the K/J − K colour-magnitude diagrams. The vertical density distribution of red clump giant stars can be described by a double exponential, with scaleheights of 268.81 ± 12.65 pc and 1061.9 ± 52.16 pc. These values are in agreement with the expected values for the thin and thick disc components of the Milky Way. For the thick disc, the radial scalelength is also obtained, with a value of hR = 3.04 ± 0.11 kpc.
IMPROVEMENT OF DETECTION OF WEAK APERIODIC BINARY SIGNALS IN A BISTABLE OPTICAL SYSTEM BY VIBRATIONAL RESONANCE

The experimental and numerical evidence of improvement of detection of subthreshold aperiodic binary signals by the use of phenomenon of vibrational resonance in a bistable vertical cavity surface emitting laser is presented. It is shown that an additional periodic modulation with a period much shorter than the bit duration in the aperiodic input signal allows one to increase significantly a cross-correlation coefficient between the input and the output of a bistable system as well as substantially to decrease the bit error rate. An experimental observation of a time lag between the input and the output of a bistable laser due the high-frequency modulation is demonstrated. The effect of asymmetry of a bistable quasipotential on the signal detection is also studied. The numerical results are in a qualitative agreement with experimental ones.
Mapping Karst Rock in Southwest China

Abstract Monitoring and assessing karst rock resulting from desertification is important to local sustainable development in the karst mountain regions of Southwest China. A new derived index, the Normalized Difference Rock Index (NDRI), is proposed to map karst rock. It takes advantage of the unique spectral response of karst rock and other land cover forms. Supervised maximum likelihood classification trials using different input bands (Landsat TM band 3–5, NDVI and NDRI derived from TM imagery) were assessed for accuracy of karst rock mapping in Bijie County, Southwest China. Results were compared with land use maps for 2000, with the best result obtained using a combination of the NDVI and NDRI indices. This paper offers a tool for land cover mapping.
Cure monitoring of composite laminates using fiber optic sensors

In this paper, we present the simultaneous measurement of the strain and temperature during cures of various composite laminates using fiber Bragg grating/extrinsic Fabry-Perot interferometric (FBG/EFPI) hybrid sensors. The characteristic matrix of the hybrid sensor is derived analytically. For the fabrication of the three types of graphite/epoxy composite laminate, two FBG/EFPI hybrid sensors were embedded in each composite laminate in two mutually perpendicular directions. We performed the real-time measurement of fabrication strains and temperatures at two points within the composite laminates during the curing process in an autoclave. Through these experiments, FBG/EFPI sensors are proven to be a good choice for efficient smart monitoring of composite structures.
Does corporate social responsibility impact on employee engagement

Purpose – Despite the claim that internal corporate social responsibility plays an important role, the understanding of this phenomenon has been neglected. This paper intends to contribute to fill this gap by looking into the relation between CSR and employee engagement. Design/methodology/approach – A survey research was conducted and three different groups of respondents were faced with three different CSR scenarios (general, internal, external) and respondents' employee engagement was measured. Findings – The results show that there are no statistically significant differences in levels of engagement between employees exposed to external and internal CSR practices. Nevertheless, employees exposed to internal CSR are more engaged than those exposed only to external CSR practices. Research limitations/implications – The use of scenarios, although a grounded approach, involves risks, including the difficulty of participants to put themselves in a fictional situation. Also, the scale used to measure employ.
Preliminary Investigation into Causal Factors for Engineering Enrollment

In Canada, the majority of university-bound students are required to choose their post-secondary program during their final year of high school. This is an important decision, and is difficult and confusing for many students with limited information to make these career- impacting choices. Past research suggests that the engineering profession is not understood in the public domain, especially in elementary and secondary schools. To further investigate this issue, a mixed-methods study is being conducted to examine the factors behind students' selection of engineering. Self-reported retrospective satisfaction with program selection is used as an indicator for successful decision-making. Indicated factors were compared with demographics to determine if they vary in importance by gender, year or personal relationships with professional engineers. This paper discusses trends that are evolving from the first phase of processing. Extensive quantitative and qualitative analysis is still underway on the full package of data, and further findings will be published at a later date.
Topics in Spatial Statistics

An overview is given over a fair range of topics within spatial and spatial-temporal statistics. The theory presented is motivated by and illustrated with actual applications to real world problems. We describe and discuss models for three basic types of spatial processes: continuous random surfaces, mosaic phenomena, and events-against-background processes. Various combinations of these sometimes occur naturally in applications, like GauBian noise on top of a Markov random field in image restoration problems. Some of these combinations are also discussed. The applications we discuss are drawn from the areas of medical image analysis, pollution monitoring, characterisation of oil reservoirs, estimation of fish and whale stock, forestry surveillance via satellite, statistical meteorology, and symbol recognition.
ASSESSING DIVERSITY AND PHYTOREMEDIATION POTENTIAL OF SEAGRASSIN TROPICAL REGION

Seagrass ecosystem is one of the most important resources in the coastal areas. Seagrasses support and provide habitats for many coastal organisms in tropical region. Seagrasses are specialized marine flowering plants that have adapted to the nearshore environment with heterogeneous landscape structures of shallow-water estuarine/marine ecosystems. This unique feature of seagrass has rendered it to have high phytoremediation potential. Phytoremediation is a cost-effective plant-based approach and environmentally friendly solution for heavy-metal contaminated sites. The main objectives of the study were to determine the current status and diversity of seagrass ecosystem and to assess the phytoremediation potential of seagrass for lead and chromium in tropical region. Diversity of seagrass species in the study area was relatively low and only a few number of species and only a few number of individual per species were present due to environmental degradation caused by natural and human activities. Using the Shannon Diversity Index, the seagrass beds at Candelaria site had a diversity mean value of 1.6 while the Masinloc site had an average diversity value of 1.1, which indicate that both sites have very low diversity of seagrasses. Phytoremendiation efficacy of seagrass varied among coastal substrates and seagrass beds. While lead and chromium were not present in water, chromium was present in the sediment of the seagrass ecosystem in Candelaria and Masinloc, Zambales and lead was present only in the sediment of Masinloc, Zambales. Cymodocea rotundata was found to be a good phytoremediator for lead due to high amount of lead absorbed in both seagrass ecosystems. Chromium was not absorbed by C. rotundata, T. hemprichii and S. isoetifolium in both seagrass ecosystems.
Use of high-intensity data to define large river management units: A case study on the lower Waikato River, New Zealand

The importance of environmental heterogeneity in lotic ecosystems is well recognised in river management, and continues to underpin studies of hierarchical patch dynamics, geomorphology and landscape ecology. We evaluated how physical characteristics and water chemistry measurements at high spatiotemporal resolution defi ne channel units of potential ecological importance along 134 km of the lower Waikato River in North Island, New Zealand. We used multivariate hierarchical clustering to classify river reaches in an a priori unstructured manner based on (i) high-frequency, along-river water quality measurements collected in four seasons and (ii) river channel morphology data resolved from aerial photos for 1-km long reaches. Patterns of channel character were shaped by the depth and lateral complexity of constituent river reaches, while water quality patterns were represented by differences in clarity, chlorophyll fl uorescence and specifi c conductance driven by tributary infl ows in the mid-section of the river and tidal cycles in the lower section. Management units defi ned by physical characteristics or water quality did not necessarily align with boundaries typically refl ecting clinal processes (e.g. tidal infl uence) or geomorphic, network or anthropogenic discontinuities. The results highlight the dynamic spatial and temporal properties of large rivers and the need to defi ne clear objectives when deriving spatial units for management and research. Given that actions and targets for physical channel and water quality management may differ, the spatial extent identifi ed for each of these does not necessarily need to directly coincide, although both should be considered in decision making and experimental design.
Impact of Sun Drying Methods and Layer Thickness on the Quality of HighlandArabica Coffee Varieties at Limmu, Southwestern Ethiopia

Coffee is the most important crop in the national economy of Ethiopia and continues to be still the leading export commodity. Despite the economic importance, productivity and quality of the crop is very low. Improper post-harvest processing techniques largely contribute to the decline in coffee quality. However, lack of information on the effects of post-harvest processing and drying on quality necessitates a comprehensive study. Therefore, this experiment was carried out to determine the effects of sun drying methods, variety and cherry drying layer thickness on quality of coffee at highland areas of Limmu, Jimma zone. Accordingly, on-farm processing experiments were conducted at state owned coffee farms under Limmu Coffee Plantation Development Enterprise (LCPDE) from September up to December, 2010. The experiment was laid out in 3 × 3 × 4 Split-Split-plot design arranged in CRD with three replications. The three factors comprise three drying materials: bricks floor, raised beds with bamboo mats and mesh wires assigned to the main-plots. Three coffee varieties: 744, 74110 and 744+74110 assigned to sub-plots and four levels of cherry layer thicknesses: 20; 30; 40 kg/m2 (uniformly spread) and the farmers’ conventional practices (40 kg/m2) as sub-sub plot treatments. The data were computed by using list significant differences (LSD) procedures of SAS version 9.2. As a result, the interaction effects were highly significant (P = 0.01) for total coffee quality and significant variations were observed (P = 0.05) for drying period, total raw quality, total cup quality and coffee grades. The finding revealed that; processing coffee on raised beds using appropriate layer thickness loads of 20 to 40 kg/m2 at high altitudes produce quality coffee identified as total quality scores ranging 80-89.99 points and can attain “Specialty Grade 1 and 2” classification profiled under grade 2. While, the conventional systems produce low quality coffee identified as commercial grade classifications profiled under grade 3 to 4. Hence, using appropriate dry processing approaches, it is possible to produce specialty coffee.
Nurturing Intrapreneurship to Enhance Job Performance: The Role of Pro-Intrapreneurship Organizational Architecture

Following the needs to ingrain intrapreneurial spirit among Malaysian workforce, as highlighted in the National Economic Advisory 2010, the aim of this study is to identify the organizational architecture that can be designed to foster such behaviour which could subsequently lead to better job performance. Specifically, this study examines the effects of five dimensions of pro-intrapreneurship organizational architecture; namely, “management support”, “work discretion”, “reward and reinforcement”, “organizational boundaries” and “time availability” on intrapreneurial behaviour which was then regressed to the job performance. A sample of 263 employees consisting of engineers and managers working in multinational companies participated in this study. The findings were tested using structural equation modeling procedure. In general, the results indicate that except for “organizational boundaries”, other organizational architecture namely “management support”, “work discretion”, “reward and reinforcement” and “time availability” were found to have positive significant effects on intrapreneurship. In addition, intrapreneurial behaviour is found to be positively related to job performance. In short, it can be surmised forming an internal ecosystem that is conducive for the workforce to behave intrapreneurially is a wise step to foster innovativeness culture that could subsequently be translated into a long term growth and sustainability of the organization.
Lidar observations of middle atmospheric gravity wave activity over a low-latitude site (Gadanki, 13.5° N, 79.2° E)

Abstract. The low-latitude middle atmospheric gravity wave characteristics are presented using 310 nights of Rayleigh lidar observations made at Gadanki (13.5° N, 79.2° E) over the period from March 1998 to December 2002. The gravity wave characteristics are presented in terms of vertical wave number and frequency spectra, along with the estimated potential energy for the four seasons, namely, spring, summer, autumn and winter. The computed wave number spectra for both the stratosphere and the mesosphere are found to differ significantly from a saturated model predicted spectrum. The spectra were found to be shallower at lower wave numbers and steeper at higher wave numbers with transition at ~8.85×10-4 cy/m. The computed frequency spectra seem to follow the model plot with a power law index of -5/3 above a frequency of ~2×10-4 Hz. The estimated potential energy per unit mass increases gradually up to ~60 km and then rather rapidly above this height to reach values of the order of 200J/kg at ~70 km.
According to Candidate Teachers Views Classroom Management Problems of Teachers in Traditional and Technology-Supported Classrooms.

In this research, it is aimed to investigate classroom management problems of middle school 6th and 7th grade teachers in traditional and technology-supported classrooms and differences between them. For this purpose the opinions of the students in the 4th grade of Primary Education Department in Faculty of Education of Suleyman Demirel University have been taken. In data analysis, t- test was used by calculating the arithmetic mean. As a result of the research it has been found that technology-supported classrooms are more aesthetic than traditional classrooms, but lighting is insufficient in technology-supported classrooms, teachers do not change the methods and techniques they use during the course in both traditional and technology-supported classrooms, the use of technology in classrooms provides teachers with help in managing the time, teachers in both traditional and technology-supported classrooms prefer standing at the same point but teachers in technology-supported classrooms can motivate students more easily and the use of technology makes no difference in the frequency of undesired behaviors out of the course.
Body Composition and Carotid Artery Intima-Media Thickness in 12 to 17-Year-Old Adolescents

BODY COMPOSITION AND CAROTID ARTERY INTIMA-MEDIA THICKNESS IN 12 TO 17-YEAR-OLD ADOLESCENTS Jennifer Jane Willis Department of Exercise Sciences Master of Science Background and Purpose—There is controversy in the literature regarding the relationship between intima-media thickness (IMT) and body composition among adolescents. This study investigated the relationship between body fat percentage and IMT, while controlling for height, weight, age, blood pressure, cholesterol, glucose, triglycerides and VO2max in 12 to 17-year-old children. Methods—111 children (mean age = 14.33 years) participated in this study. Body fat percentage was assessed using dual energy x-ray absorptiometry (DXA). A B-mode, high-resolution ultrasonograph was used to measure the IMT of the right and left common carotid arteries (CCA). Fasting blood tests were performed to obtain blood lipid and glucose profiles. Blood pressure was measured using an automatic blood pressure cuff. Results—Data were divided into body fat tertiles to compare differences between the upper and lower tertile. Contrary to what might be expected, the mean IMT of the group with the lowest body fat percent was 0.516 mm and the mean IMT for the upper tertile of body fat percent was 0.483 mm (F(2,103) = 5.883, p = 0.004). Post hoc analysis indicated that the two leanest groups had significantly thicker IMT than the group with the highest percent body fat (p = 0.005 and p = 0.027, respectively). The two leanest groups were not significantly different from each other. When controlling for gender, no significant relationship existed between CCA-IMT and body fat percentage (F(2,103) = 2.267, p = 0.109). Conclusions—This study found that there were significant differences in IMT between body fat percentage and CCA-IMT in children and adolescents 12 to 17-years of age. This study did indicate that as body fat increases, risk factors such as cholesterol and triglycerides also increase. Overall, the direct relationship between CCA-IMT and body fat percentage is poorly understood in children and adolescents. Further research is necessary to determine a standardized protocol for assessing atherosclerotic risk in adolescents.