Miracle-dz/UniFAR-FTUs huggingface dataset:
Application of software packages Gemcom and Whittle for design in mining aimed to rational and cost effective utilization the copper deposit Veliki Krivelj near Bor, Serbia

The copper deposit Veliki Krivelj is located about 3 km by the air, north of the town of Bor and belongs to the porphyritic large-scale deposits. Total geological reserves of copper, in a contour of limit content 0.15% amount to 621 921 288 t. For its importance, this deposit has a leading role in the production of copper in the company RTB Bor, as it has 75% of total production. The World mining companies in assessment the financial viability and defining the optimum strategy for development the mine and rational and economical utilization of mineral deposits, use some software for optimization and design, and among the leading ones are Whittle and Gemcom, which the Mining and Metallurgy Institute Bor also owns. This work presents a method of defining the optimum contour of the copper deposit Veliki Krivelj using the software Whittle and Gemcom, which ensure the optimum utilization of deposit, which is a necessary prerequisite for responsible management of mineral resources.
Efficacy of hydrogels for repair of traumatic spinal cord injuries: A systematic review and meta-analysis.

Hydrogels have been used as promising biomaterials for regeneration and control of pathophysiological events after traumatic spinal cord injuries (TSCI). However, no systematic comparison was conducted to show the effect of hydrogels on pathophysiological events. This study was designed to address this issue and evaluate the regenerative potential of hydrogels after TSCI. From 2857 records found in MEDLINE and EMBASE databases (April 23, 2021), 49 articles were included based on our inclusion/exclusion criteria. All studies discussing the effect of hydrogels on at least one of the main pathophysiological events after TSCI, including inflammation, axon growth, remyelination, glial scar formation, cavity size, and locomotor functional recovery were included. For statistical analysis, we used mean difference with 95% confidence intervals for locomotor functional recovery. The results showed that both natural and synthetic hydrogels could reduce the inflammatory response, hinder glial scar formation, and promote axon growth and vascularization. Also, the meta-analysis of the BBB score showed that using the hydrogels can lead to locomotor functional recovery. It was found that hydrogels are more efficient when used in transection and hemisection injuries (SMD: 1.89; 95% CI: 1.26, 2.52; P < .00001) compared to other injury models. The pre-formed implanted hydrogels (SMD: 1.79; 95% CI: 1.24, 2.34; P < .00001) found to be more effective compared to injection (SMD: 1.58; 95% CI: 0.64, 2.52; P = 0.0009). In conclusion, based on the available evidence, it was concluded that hydrogel composition as well as implantation method are dominant factors affecting tissue regeneration after TSCI and should be chosen according to the injury model in animal studies.
Prediction of starting performance of PM motor by DC decay testing method

This paper presents a method to predict the direct- and quadrature-axis operational impedances and starting performance of PM motors by a simple standstill response testing method using a small-capacity DC power supply unit. In this method, not only the starting performance but also the direct- and quadrature-axis synchronous machine constants (synchronous, transient and subtransient reactances) and equivalent circuit constants are calculated. This proposed strategy, tentatively named the DC decay testing method, is carried out on a 3.7 kW 200 V 22 A 100 Hz four-pole interior PM motor with a damper winding. The results measured by on-load tests and those predicted by the proposed method on starting performance demonstrate the validity and usefulness of the proposed method.
Extended Distance Fiber Optic Monitoring for Pipeline Leak and Ground Movement Detection

We present a comprehensive solution for in-line and realtime monitoring of long distance pipeline using distributed fiber optic sensors. The technique is based on Brillouin scattering and is capable of measuring strain and temperature over distances larger than 150 km with meter resolution using a single instrument. The solution includes ground movement, leakage and third party intrusion detection. The solution presentation is supported by experimental results and practical cases of implementation.Copyright © 2008 by ASME
Simple procedure for optimal sizing and location of a single photovoltaic generator on radial distribution feeder

Unlike traditional distribution generation (DG) units, the production of photovoltaic DG (PVDG) units is non-dispatchable and largely driven by the rates of solar irradiance fall on its PV array. In this work, a suitable procedure for optimal sizing and location of single PVDGs on radial distribution feeders has been developed. It goes along with the current trend of interfacing renewable energy generators with the grid due to global warming concern. The procedure applies single PVDG unit at points on the feeder while allowing reverse power flow (RPF) within the feeder line sections. The optimisation objective is to minimise the accumulated line power loss over the day (line energy loss) along the feeder, while keeping the voltage profile along the feeder within permissible limits. A method has been applied to rate the line energy loss considering one time interval, namely feasible optimisation interval. The procedure has been applied to an actual 11 kV feeder in Abu Dhabi city. The application showed obvious benefits in terms of line loss reduction and improvement of the voltage profile. The procedures also resulted in alternative feasible solutions in case the optimal solution cannot be applied for any reason – like inconvenience/limitation of land or investment.
Balancing and sequencing of parallel mixed-model assembly lines

In this paper, a simulated annealing approach is developed for the parallel mixed-model assembly line balancing and model sequencing (PMMAL/BS) problem which is an extension of the parallel assembly line balancing (PALB) problem introduced by Gökçen et al. (2006). In PALB, the aim is to balance more than one assembly line together. Balancing of the lines simultaneously with a common resource is very important in terms of resource minimisation. The proposed approach maximises the line efficiency and distributes the workloads smoothly across stations. The proposed approach is illustrated with two numerical examples and its performance is tested on a set of test problems. The computational results show that the proposed approach is very effective for PMMAL/BS.
Computer Vision to Locate Fruit on a Tree

ABSTRACT RESEARCH on the application of computer vision as a sensing system for robotic harvesting of fruit was performed. A vision system was developed to collect images. Testing was conducted during the day and at night on peach and apple trees. A computer algorithm was developed to enhance and extract information from images. This extracted information was used to classify objects within these images as either **multiple fruit, ^'single fruit, or '*noise. The algorithm correctly handled approximately 92% of the objects and identified approximately 89% of the fruit found in images obtained at night. Computer vision was determined to be a viable technique for detecting and identifying fruit on trees.
Indian Pucciniales: taxonomic outline with important descriptive notes

Rusts constitute a major group of the Kingdom Fungi and they are distributed all over the world on a wide range of wild and cultivated plants. It is the largest natural group of plant pathogens including 95% of the subphylum Pucciniomycotina and about 8% of all described Fungi. This article provides an overview and outline of rust fungi of India with important descriptive notes. After compilation of available literature on Indian rust fungi from various sources, it was observed that these fungi are distributed in 16 families, 69 genera and 640 species. They belong to Coleosporiaceae, Crossopsoraceae, Gymnosporangiaceae, Melampsoraceae, Milesinaceae, Ochropsoraceae, Phakopsoraceae, Phragmidiaceae, Pileolariaceae, Pucciniaceae, Pucciniastraceae, Raveneliaceae, Skierkaceae, Sphaerophragmiaceae, Tranzscheliaceae and Zaghouaniaceae. There are still many rust fungi with uncertain taxonomic position, and they have been referred to incertae sedis. The placement of all fungal genera is provided at the class, order and family-level along with number of species in a genus. Notes for each rust family along with total Indian records and other taxonomic information on transferred genera and species are also presented. A phylogenetic analysis from a combined LSU and ITS dataset for 25 rust genera is presented to provide a better understanding of their phylogeny and evolution.
Clicks or Bricks? Online Shopping Adoption in Australia

Purpose: This research identifies and ranks the decision factors associated with online shopping adoption in Australia. Design/Methodology/Approach: Primary data for this study was collected with self-administered questionnaires and analysed using EFA and logit regression.Findings: The following factors, ranked in order of importance, influence online shopping behaviour in Australia: perceived risk, service quality, website factors, brand image, product variety and Australian product loyalty. The findings also show that demographic characteristics also influence the probability that Australian consumers will shop online. Originality/value: This is the first empirical study in which the decision factors influencing Australian consumers’ decisions to shop online are examined. The research contributes to the empirical literature on online shopping from a theoretical perspective as the modelling framework can be used to analyse online shopping behaviour in different cultural settings. Longitudinal studies based on the modelling framework can also be undertaken to identify emerging decision factors and to track the changes in importance of the current factors. The results will also enable retailers to make informed decisions on their existing or future shopping channels.
Ultrasonic sensor system for measuring position and orientation of laproscopic instruments in minimal invasive surgery

In minimal invasive surgery usually an endoscope is used to show the surgeon what is happening inside the human body. However, this view is very limited and gives no information of instrument positions outside the camera view. A new positioning system is proposed that should give the surgeon the exact location and orientation of the instruments in the patient. The measuring system consists of markers placed on the instruments, outside of the human body. Knowing the dimensions of the usually rigid instruments it is possible to calculate their position and orientation inside the human body from the marker positions. Two pairs of ultrasound markers placed on each instrument will suffice to measure both the position and orientation. The detection of marker positions is realized by an array of ultrasound receivers. The influence of variations in temperature, humidity and pressure of air on the phase-shift and time-of-flight methods was investigated. Using the time of flight method, the variations of distance and time of flight have a linear correlation and it seems that an accurate measurement system can be achieved.
Performance Enhancement of Ez-Source Inverter Using Induction Motor

Since the Z-Source element has fewer complexes they are used mainly for buck-boost energy conversion with the help of passive elements. The further advancement in the Z-Source is the Embedded EZ-Source inverter that can produce the same gain as Z-Source inverter. The input to the Embedded EZ-Source inverter is been obtained from solar cell . Therein the ripples which we obtain from the output voltage of solar cell is filtered using Z-Filter. Pure DC is given to the three-phase inverter, followed by the conversion to balanced AC. The output of the Embedded EZ Source inverter is used to control the harmonics present in the load. The entire process is analysed with the help of MATLAB-SIMULINK
Nursing Students’ Practicums during the COVID-19 Crisis and the Effect on Infection-Prevention Behavior in Students: A Mixed-Method Approach

Background and Objectives: The coronavirus disease pandemic is ongoing. Infection-prevention measures in nursing education (practicum) are essential. However, there are few studies on infection-prevention behaviors among nursing students participating in practicums. We aimed to clarify the effect of practicums during the coronavirus disease crisis on infection-prevention behavior in Japanese nursing students. Materials and Methods: We conducted semi-structured interviews with 13 third-year nursing students in Osaka City within one week of their clinical placement training. From the results of the interview analysis, we compiled a questionnaire and surveyed 90 third-year students. We conducted qualitative and quantitative analyses. We used descriptive statistics for the quantitative analysis and the chi-squared test for binary variables. Results: From the qualitative analysis, we identified five categories regarding the awareness of infection-prevention measures: <Acquisition of knowledge and skills in infection-prevention measures during nursing practice>, <Defining the experience in infection-prevention measures>, <Changes in attitude towards infection>, <Changes in infection prevention behavior>, and <infection-prevention measures-related issues>. In the quantitative analysis, the practicum students who attended at least three pre-practicum orientations continued wearing masks during lunch breaks and avoided the three Cs. Conclusions: Students could recall the knowledge and experiences gained from pre-practicum orientations/practicums. This experience created a new awareness of infection-prevention and change of infection-prevention behavior. Infection-prevention education using practicums is important for infection-prevention behavior during this pandemic. However, there should be a much larger-scale study to support these findings in the future.
Assessment of K-Struvite Precipitation as a Means of Nutrient Recovery From Source Separated Human Urine

The impact of nutrients on the environment, particularly on water bodies, has led to extensive studies for nutrient control. Within this context, studies have been focused on source separation of human urine from domestic wastewater to recover nutrients. Potassium is one of the most important components of human urine. However, data on potassium removal or recovery are quite limited except for some indirect information through use of zeolites for mostly ammonia removal. Potassium struvite or K-struvite (MgKPO4·6H2O) is a sparingly soluble salt belonging to struvite and has the potential of being used as a means of potassium and phosphate recovery from segregated human urine. This study aimed to assess the potential of K-struvite precipitation for control and recovery of nutrients. Within this context, K-struvite precipitation experiments were performed on both synthetically prepared samples and synthetic human urine solution to determine effect of operation parameters i.e. pH, stoichiometry, and temperature on potassium recovery performance. Results indicated that process performance as well as type of solid phases co-precipitated with K-struvite were closely related to initial potassium concentration, pH and reaction stoichiometry. At pH 10, the potassium recovery efficiency was maximized up to 87% by application of 100% excess dose of Mg and P for both synthetic samples and synthetic human urine solution. On the other hand, application of excess dose of K did not provide any improvement in K recovery efficiency. The effect of temperature on solubility of K-struvite was insignificant at the temperature of 24-90°C. Solid phase analyses confirmed that K-struvite was co-precipitated with either Mg3(PO4)2, MgNaPO4·7H2O, or MgHPO4·7H2O depending on pH and stoichiometry instead of a pure compound.
High-speed laser beam attenuators based on electro-optic Bragg gratings

This paper provides research progress in the development of fast electro-optic gratings for laser beam attenuations and in free space optical (FSO) communications involving mobile terminals. The electro-optic phase grating is formed by the phase separation of ~100nm liquid crystals droplets from a polymerizing organic matrix using holographic interference technique. The formed grating separates the incident laser beam into the output beams: the transmitted and diffracted beam, whose intensities can be electrically adjusted through electro-optic effect. The fast electro-optic gratings have a very fast electro-optic response time of 50 μs with diffraction efficiency above 99.8%. Optical receivers used in FSO have a limited dynamic range and there is a need for in-line variable attenuators to keep the signal levels from overloading the receiver. These attenuators should be continuous, provide sufficient attenuation, and also provide a low insertion loss for weak signal reception. The use of electro-optic phase gratings is one solution to meet the requirements for an in-line attenuator for FSO.
WELFARE, WORK, AND WELL-BEING IN METRO AND NONNIETRO LOUISIANA*

This paper examines the extent to which persons in the Temporary Assistance to Needy Families (TANF) have been able to leave the TANF program. The analysis is based on the Louisiana Welfare Survey which is a panel study of 1,000 persons (500 in New Orleans and 500 in two labor market areas in northeastern Louisiana) who in 1998 and 1999 had been on welfare. The originalrespondents have been reinterviewed annually, with the fifth and final wave currently (May 2002) in the field. The findings reported in this paper are based on the first three waves of the panel survey, 1998- 2000. The findings show that by 2000 more than half of the respondents had left TANF, mostly because of employment. Well over one-half of all TANF leavers reported to be working in 2000. Althoughmost respondents that had left TANF reported being better offeconomically, the work these persons could find consisted mostly of low-status low-pay jobs in service industries. As a result, TANF recipients as well as TANF leavers faced a good many economic hardships, such as not having enough to eat, having phone and utilities disconnected, and inability to obtain medical and dental services. The comparison of metro and nonrnetro areas showed that TANF recipients in nonmetro areas were less likely to leave the
From blame to context: how official responses influence negative media portrayal of country image

ABSTRACT Several studies on international media coverage of developing countries have highlighted the preponderant negative valence of reportage, with ample blame on foreign editors for inexorably portraying Africa negatively. However, the penchant for blaming editors has caused an apparent negation of other perspectives in the portrayal of developing countries. The present study focuses on two side-lined perspectives: the contexts of reportage and official responses to negative image portrayals. With Nigeria in focus, the study urges a rethink of endless, defeatist criticism of foreign editors for negative image of developing countries. It adopts quantitative and qualitative content analysis of 486 negatively slanted newspaper articles on Nigeria in three international newspapers. Results indicate that negative reports about Nigeria were pitched within proven contexts of the routine, systemic and endemic. There was a significant relationship between type and extent of government responses, and negative coverage. In view of the contexts of negative coverage, the study concludes that Nigerian government officials can manage media reactions better by offering fewer rebuttals to negative media coverage, and being prepared to show more evidence of action to redress negative images.
Engineering education innovation with software engineering projects

This paper discusses the development of software engineering class projects that have produced tools which have been used to enrich the educational experience of engineering students, the end users of the software. The projects have involved the creation, maintenance and evolution of software that helps the students determine their major, understand their learning style, develop a semester-by-semester plan of study, and formulate a class schedule each semester. The evolution of the structure of the software engineering project process is first presented. Having "internal" clients (i.e. those who are employees of the university) for projects that directly benefit engineering students is then compared to having "external" clients. The benefits gained by all stakeholders through these projects and data supporting the satisfaction levels of those stakeholders is presented. Finally, there is a discussion of funded research projects that have been spun off from of these projects, and the plans for the further educational software development through these grants.
Advanced analysis of grid‐connected PV system's performance and effect of batteries

An advanced method of analysis for grid‐connected PV systems is developed in this research. To investigate the issues which may arise in the clustered PV systems, a “Demonstration Project on Clustered PV Systems” was initiated in December 2002 in Oota, Japan, involving the installation of more than 500 residential PV systems in the demonstrative research area, and the development of battery‐integrated PV systems to avoid restrictions on output power due to the raising of the grid voltage. The annual performance of commercial PV systems without battery was analyzed and a performance ratio of 80% on average was found to have been achieved. Overvoltage of power distribution lines and snow are two major factors capable of causing very low performance ratio on a daily basis. The effects of batteries have also been analyzed, and the results indicate that there will be some reduction of energy losses due to the grid voltage, but the PCS efficiency will be at least 8% worse than that of commercial PV systems. It was also found that nonoptimized battery operation sometimes results in a fully charged situation at noontime and maximum reverse power flow may not be minimized in this situation. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 164(1): 21–33, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.20660
A high voltage power supply operating under a magnetic field

The article describes a network of high voltage power supplies where the high voltage power supply incorporates a ceramic transformer utilizing piezoelectric effect to generate high voltage. The ceramic transformer is constructed from a ceramic bar and does not include any magnetic material. So it is expected that the high voltage power supply can operate under a magnetic field. The high voltage power supply was tested under a magnetic field of 1.5 tesla. The performance of the power supply was almost intact in the magnetic field. The power supply includes feedback to stabilize the high voltage output, supplying from 1500 V to 2500 V with a load of more than 10M/spl Omega/ at a efficiency higher than 50%. From a supply voltage of 2 V, the power supply can provide about 3000 V at a load of 20 M/spl Omega/. A supply voltage of 5 V is large enough to provide 4000 V at the same load. The high voltage power supply is equipped with an interface chip with a network. Most functions of the high voltage power supply are kept under the control of the chip, and are then monitored and controlled through the network.