Miracle-dz/UniFAR-FTUs huggingface dataset:
The measurement of information system project success

Ensuring the delivery of an investment is crucial for organisations as significant amounts of operating and capital expenditure is spent on information systems. Regrettably, many organisations today have no accurate techniques for forecasting and warranting the success of information system projects and many rely on the traditional project management triple constraint criteria alone, which encapsulate time, cost, and quality. Many chief executive officers (CEOs), chief information officers (CIOs) and other executives have difficulty in justifying their investments and return on investment (ROI) in information systems. Since the 1970s many articles have been written and much research conducted on the topic of information system project success. However, there is still no consensus on an agreed upon definition and robust methodology to measure the success of information system projects (ISPs). This research attempted to determine if organisations measure the success of their ISPs. In addition, the researcher aimed to pinpoint what key success factors and critical success criteria organisations use, and how these are applied to measure information system project success (ISPS). To reach these objectives, qualitative research was conducted by means of a study of the literature on the topic, a pilot survey, and semi-structured interviews in order to gather expert opinions and information pertaining to the measurement of ISPS in industry. It was found that most project managers and companies still rely on the traditional triple constraint to determine the success of their information system projects. Moreover, this phenomenon exists due to a lack of knowledge on the topic, top management buy-in, time and resources, and a perception that the costs to get a measurement system in place outweigh the benefits to be gained from it.
Low Intensity Pulsed Ultrasound for Bone Tissue Engineering

As explained by Wolff’s law and the mechanostat hypothesis, mechanical stimulation can be used to promote bone formation. Low intensity pulsed ultrasound (LIPUS) is a source of mechanical stimulation that can activate the integrin/phosphatidylinositol 3-OH kinase/Akt pathway and upregulate osteogenic proteins through the production of cyclooxygenase-2 (COX-2) and prostaglandin E2 (PGE2). This paper analyzes the results of in vitro and in vivo studies that have evaluated the effects of LIPUS on cell behavior within three-dimensional (3D) titanium, ceramic, and hydrogel scaffolds. We focus specifically on cell morphology and attachment, cell proliferation and viability, osteogenic differentiation, mineralization, bone volume, and osseointegration. As shown by upregulated levels of alkaline phosphatase and osteocalcin, increased mineral deposition, improved cell ingrowth, greater scaffold pore occupancy by bone tissue, and superior vascularization, LIPUS generally has a positive effect and promotes bone formation within engineered scaffolds. Additionally, LIPUS can have synergistic effects by producing the piezoelectric effect and enhancing the benefits of 3D hydrogel encapsulation, growth factor delivery, and scaffold modification. Additional research should be conducted to optimize the ultrasound parameters and evaluate the effects of LIPUS with other types of scaffold materials and cell types.
A non-local hydrodynamic model for impact ionization in submicron silicon BJT's

A 1-D transport model for the high-energy electrons contributing to impact ionization (II) is presented. Application of the hydrodynamic II model to submicron silicon BJTs allows one to accurately predict the impact ionization coefficient /spl alpha//sub ii/ and the multiplication factor M - 1. Comparison of the calculated results with the Monte Carlo simulation data is also presented.
Additional Effects of Antiplatelet Therapy on Anticoagulant Agents in Patients With Bioprosthetic Valves and Atrial Fibrillation.

BACKGROUND The additional effects of single-antiplatelet therapy (SAPT) on anticoagulant therapy are still unclear in patients with atrial fibrillation (AF) after bioprosthetic valve replacement.Methods and Results:We conducted a subanalysis of a multicenter, retrospective, observational registry of patients with bioprosthetic valves and AF in Japan. Patients administered anticoagulants alone comprised the ACA group (n=107), and patients given concomitant SAPT and anticoagulant therapy comprised the On SAPT group (n=82). The primary efficacy endpoint was the incidence of stroke/systemic embolism, and the primary safety endpoint was the incidence of major bleeding. The observation period was 46.3±24.6 months. The primary efficacy endpoint occurred in 12 patients, and the cumulative incidence of primary efficacy events was significantly higher in the ACA group compared with the On SAPT group (P=0.039). The primary safety endpoint occurred in 22 patients, and the cumulative incidence of primary safety events was similar between groups (P=0.66). No differences between the groups were observed for cardiac events. CONCLUSIONS Additional SAPT on anticoagulant therapy in patients with bioprosthetic valves and AF was associated with a reduction in stroke/systemic embolic events, although the cumulative incidence of bleeding was similar, regardless of additional SAPT. These findings suggest that additional SAPT on anticoagulant therapy may be safe and effective in real-world clinical settings.
TEES: An Efficient Search Scheme over Encrypted Data on Mobile Cloud TEES (Traffic and Energy saving Encrypted Search)

: Cloud storage provides a convenient and more storage at low cost, but data privacy is a major concept that prevents users from storing files on the cloud. One way of improving the data privacy is to encrypt the files before sending them onto the cloud and decrypt the files when they are downloaded. However, data encryption is a difficult task for the mobile devices, and data retrieval process is a complicated communication between the data user and cloud. With limited capacity and a limited battery life of mobile phones, these issues may introduce heavy overhead to computing and more power consumption for mobile device users, which makes the encrypted search over mobile cloud very difficult and as a challenge task for the user. In this paper, we have proposed, TEES, in which with more bandwidth and better energy efficient encrypted search over a mobile cloud. The proposed architecture removes the computation from mobile devices to the cloud, and hence we further can optimize the communications of the mobile clients and the cloud.
Research on variable rate fertilisation machine based on big data analysis

ABSTRACT In order to improve the effect of intelligent fertilisation, according to actual fertilisation needs, this paper combines big data technology to perform data analysis, and designs a variable fertilisation mechanical structure that can be used for mixed fertilisation to realise mixed fertilisation of multiple crops. Moreover, from the perspective of precise fertilisation, this paper combines the actual needs of variable fertilisation to construct a control system, and adopts an adaptive federated filter structure to solve the influence of equipment errors on system position estimation. In addition, this paper solves the problems of excessive partial application and low fertiliser utilisation in traditional fertilisation, as well as the resulting waste, environmental pollution, and poor quality of agricultural products. Furthermore, this paper designs and manufactures a dual-variable application test device, and conducted a fertiliser discharge test on the test device. Finally, this paper uses big data technology to analyze the experimental data of variable fertilisation operation machinery. From the experimental research, it can be seen that the effect of the fertilisation operation machinery designed in this paper meets actual needs.
ANALYSIS OF COMPOSITE MATERIALS VIA ELECTROMAGNETIC INVERSE SCATTERING

An extremely accurate forward and inverse scattering method has been developed and implemented for electromagnetic systems. This method is directly applicable for various realtime in-situ tasks. The forward scattering algorithm utilizes multipole “perfectly matched layer” boundary conditions as well as a complex realization of the permittivity functions of highly nonlinear lossy materials, optimizing both storage and computational requirements. The method combines several hybrid components due to the inapplicability of typical inverse methods such as the conjugate gradient method and Hessian matrix inversion; these latter methods are inapplicable due to the hyperbolic nature of the Maxwell-material (MM) equations. Examples of highly structured inverse scattering of layered and structured objects that involve up to 23 independent parameters are given. The newly developed methodology as described and implemented herein is self-contained and can be modified to analyze various electromagnetic systems, regardless of scale, size and composition. The new method enables the accurate and efficient capture of effects of a broad variety of materials with various kinds of poles in the permittivity function that often occur with highly structured complex objects with multi-material lossy coatings.
New development: A ‘journey of personal and professional emotions’—emergency ambulance professionals during Covid-19

IMPACT This article explores the consequences of emotional labour on UK NHS ambulance staff and their response to the Covid-19 pandemic. It highlights the challenges faced by ambulance crews while dealing with their emotional labour within the context of organizational settings. Research findings also explain the importance of emergency responders’ psychosocial wellbeing. The article has clear relevance as to how frontline staff manage their emotional labour in other emergency service settings, such as the police and fire and rescue services.
Astrocytes Exhibit a Protective Role in Neuronal Firing Patterns under Chemically Induced Seizures in Neuron–Astrocyte Co-Cultures

Astrocytes and neurons respond to each other by releasing transmitters, such as γ-aminobutyric acid (GABA) and glutamate, that modulate the synaptic transmission and electrochemical behavior of both cell types. Astrocytes also maintain neuronal homeostasis by clearing neurotransmitters from the extracellular space. These astrocytic actions are altered in diseases involving malfunction of neurons, e.g., in epilepsy, Alzheimer’s disease, and Parkinson’s disease. Convulsant drugs such as 4-aminopyridine (4-AP) and gabazine are commonly used to study epilepsy in vitro. In this study, we aim to assess the modulatory roles of astrocytes during epileptic-like conditions and in compensating drug-elicited hyperactivity. We plated rat cortical neurons and astrocytes with different ratios on microelectrode arrays, induced seizures with 4-AP and gabazine, and recorded the evoked neuronal activity. Our results indicated that astrocytes effectively counteracted the effect of 4-AP during stimulation. Gabazine, instead, induced neuronal hyperactivity and synchronicity in all cultures. Furthermore, our results showed that the response time to the drugs increased with an increasing number of astrocytes in the co-cultures. To the best of our knowledge, our study is the first that shows the critical modulatory role of astrocytes in 4-AP and gabazine-induced discharges and highlights the importance of considering different proportions of cells in the cultures.
Evaluating Machine Learning Tools for Humanitarian Road Network Mapping

The majority of the world’s poorest populations live in areas where the road network is unmapped, leaving them isolated from help during disasters. The Humanitarian OpenStreetMap Team (HOT) aims to solve this problem through volunteered geographic information. Although Humanitarian OpenStreetMap Team volunteers have traditionally digitized new roads manually, the organization is collaborating with Microsoft and Facebook AI to explore the application of machine learning to computer-assisted mapping workflows. As interest in machine learning applications grows within the humanitarian community, new organizations and volunteers may seek to carry out road classification projects for poorly-mapped regions. This thesis evaluates the major considerations of a classification workflow – primarily training data engineering and model selection. The study showcases the implications of training and model decision on a subset of the SpaceNet Road Network Detection dataset using five models: Random Forest, Support Vector Machine, Maximum Likelihood Classifier, UNet, and DeepLabV3. Models are evaluated in extensive experiments, assessing the impact of varying width of the road features used to label the training data. Each scenario is evaluated using a Matthew’s Correlation Coefficient, confusion matrix, and visual inspection of the predictions. Based on these results, the project reports valuable lessons-learned that can inform humanitarian organizations’ design for road classification workflows.
Testing the Effectiveness of Retrieval-Based Learning in Naturalistic School Settings

While the learning benefits of retrieval activities have been clearly demonstrated in laboratory settings, evidence on their usefulness in naturalistic school settings is still scant. The goal of the present studies was to investigate the feasibility and effectiveness of retrieval-based learning in children (fourth and sixth grades) when school teachers themselves design and implement retrieval activities relating to genuine curriculum contents. Three studies were conducted in a public elementary school with fourth and sixth graders and their teachers. Two of the studies involved mathematics and one dealt with social sciences. Teachers used learning activities that required students to recall part of previously taught concepts, while different concepts in the same unit were worked through with those learning activities that were normally used by each teacher. Two out of three studies revealed that, relative to business-as-usual learning activities, performing retrieval activities during classes led to better performance in the assessments at the end of the lessons. Overall, our finding provides preliminary evidence that retrieval activities can enhance learning in elementary school children when they are devised by teachers in the exercise of their professional duties. These results have important practical implications and suggest that, if teachers are aware of the value of retrieval activities in fostering meaningful learning, these activities could be successfully embedded in their daily duties even when considering the constraints imposed by school reality.
Phacoemulsification under Topical Anesthesia in a Tertiary Care Hospital

Introduction: The use of topical anaesthesia for cataract surgery dates back to 1884 when Knapp used 5% cocaine to anaesthetize cornea. The advancement in cataract surgery techniques like small stepped, self-sealing corneal incisions, phacoemulsification and advanced intraocular lenses has allowed the use of topical anaesthesia thus reducing surgical time and need of akinesia. Materials and Methods: Prospective non-comparative evaluation of patients’ and surgeon’s satisfaction under topical anaesthesia. All patients received topical anesthesia with proparacaine 0.5%. A 10-point visual analogue scale was given to patients to rate the level of pain felt during the operation. Also, the level of patient satisfaction, the need for supplemental anaesthesia, level of ocular motility, surgical complications and postoperative visual acuity were recorded. Results: Total number of cases were 156 out of which 86 (55.1%) were males and 70 (44.9%) were females. Nuclear sclerosis was most common type of cataract followed by mixed opacities. Majority of patients had no intraoperative movement and 30.8% of patients had some movement. Surgeon was dissatisfied in only 12.2% cases who had disturbing movements during surgery. Although majority of patients felt no pain (68%) or mild pain (23.7%) during surgery 8.3% cases had moderate to severe pain which required supplemental intracameral lidocaine. Conclusion: Topical anaesthesia is cost effective, provides high patient comfort during surgery, is less stressful for the patient, saves considerable time and complications compared to regional anaesthesia. Keywords: topical anaesthesia, phacoemulsification, pain assessment, surgeon`s satisfaction.
An inspection robot for boiler tube using magnetic flux leakage and ultrasonic methods

An inspection robot system has been developed to test boiler tube effectively based on the magnetic flux leakage (MFL) technique and ultrasonic method. Using the magnetic flux leakage technique, the corrosion and erosion on the outer diameter (OD) surface can be inspected. The wall loss can be tested with the magnetic bridge principle firstly, and inspected by ultrasonic probe quantitatively. A magnetic sensor was designed by the above-mentioned principle and developed with Hall element arrays. Experiments demonstrate that the NDT robot, which includes furnace wall cleaning apparatus, adhesion and crawling and safety mechanisms, the inspection device, the control system and the signal processing software, can be driven up and down the tube automatically, and the apparatus was able to identify a through hole (bigger than 1.6 mm diameter) defect and wall loss.
Transformerless Six-Switch (H6)-Based Single-Phase Inverter for Grid-Connected Photovoltaic System With Reduced Leakage Current

Due to the advancements of power electronic devices and photovoltaic (PV) power systems, there has been an increasing interest in transformerless grid-connected PV inverters, which offer lower cost, smaller volume, and higher efficiency than the one with the transformer. However, transformerless inverters with conventional topologies suffer from leakage current problem, which needs to be handled carefully. To overcome the conduction loss and leakage current problem associated with conventional transformerless inverters, a new transformerless H6 (six-switch-based) inverter topology is proposed in this article that can maintain constant common-mode (CM) voltage. At the same time, reduce or eliminate the leakage current problem. The proposed inverter topology is simulated using MATLAB/Simulink software to validate the proposed system's accuracy. The proposed topology's effectiveness is verified through the comparative results of CM voltage, CM leakage current, and conduction loss of the proposed topology with the conventional H6-I, H6-II, and H5 topologies. Finally, to validate the proposed topology, a laboratory prototype is also built and tested. The experimental results validate the theoretical analysis and simulation results.
Durational patterns produced by Swedish and American 18- and 24-month-olds: implications for the acquisition of the quantity contrast

On the basis of previous, small-scale analyses, it was hypothesized that most Swedish children develop an adult-like command of quantity-related durational patterns between 18 and 24 months of age. In this study, VC structures produced in stressed position by several Swedish 18- and 24-month-olds were analyzed for durational correlates of the complementary V:C and VC: quantity patterns. Durations were typically reminiscent of the adult norm suggesting that, at 18 months of age, Swedish children have acquired a basic command of the durational correlates of the quantity contrast. In consequence, quantity development must start well ahead of that age. It was also found that voicing had a considerable, adult-like effect on the duration of postvocalic consonants at both ages. This effect was smaller in the American controls, again indicating the presence of a languagespecific phonetic pattern. The effect of voicing on preconsonantal vowel duration was relatively moderate. The effect was also present in the American 24-monthers, but less substantially than commonly observed in adults’ speech. No significant voicing-induced vowel lengthening effect was found in the American 18-monthers.
Analysis of samples of wideband signals taken at irregular, sub-Nyquist, intervals

A modified discrete Fourier transform in stated for estimating the spectrum of a signal sampled at irregular intervals. Additive pseudorandom sampling is proposed as an irregular sampling scheme. The transform periodicity and symmetrical properties are derived for the scheme. Alias-free spectral analysis of a bandlimited periodic signal is possible when using additive pseudorandom sampling with a maximum sampling rate below that specified by the Nyquist criterion.
Development of a hot gas heat exchanger and a cleaning system for a 35kWel hermetic four cylinder Stirling engine for solid biomass fuels

Over the past few years, a small-scale CHP technology based on hermetic Stirling engines has been developed and two prototype plants with a 35 kWel four cylinder and a 70 kWel eight cylinder Stirling engine have been erected in Austria. The prototype plant with a 35 kWel Stirling engine has already been in operation for more than 9,000 hours. Operating experiences gained from these plants formed the basis for the further development of this technology and showed that the efficiency of the Stirling hot gas heat exchanger and of the corresponding cleaning system must be further optimised. A new hot gas heat exchanger and a new cleaning system have been developed and optimised in cooperation of AUSTRIAN BIOENERGY CENTRE GmbH, the Technical University of Denmark, MAWERA Holzfeuerungsanlagen GmbH, Austria, and BIOS BIOENERGIESYSTEME GmbH , Austria within the scope of an RD&D project. The new design of the Stirling hot gas heat exchanger was developed in order to optimise the performance of the engine and simplify its geometry. The most relevant objectives in this respect were to achieve uniform heat transfer across each tube of the hot gas heat exchanger, a reduction of the internal helium volume, a functional design of the flue gas duct and geometrical adaptations to implement an efficient automatic cleaning system to reduce ash depositions. Previous investigations had shown that it is not possible to efficiently reduce the ash depositions on the surfaces of the hot gas heat exchanger by primary measures. Consequently, a new automatic and pneumatic cleaning system was developed in order to increase the intervals between manual cleaning and thus the availability of the Stirling engine. The system is integrated into the furnace and works fully automatically. A pilot plant was designed and erected, based on the new technology developed. The nominal electric power output of the plant is 35 kWel and the nominal thermal output approx. 250 kWth. The plant has already been in operation since the end of May 2005. First operating experiences have proved that the pilot CHP plant can be operated fully automatically and reaches the design target concerning electric efficiencies and electric power output. Furthermore, the new hot gas heat exchanger cleaning system appears to meet operational expectations. The new CHP technology will be optimised within the scope of detailed test runs planned for autumn 2005.
Dual-band dual polarised printed antenna element

A novel printed antenna element capable of providing dual polarised operation over two widely separated frequency bands is described. The element consists of a perforated proximity-fed microstrip patch antenna operating at the lower frequency, layered over a subarray of aperture coupled microstrip elements operating at the upper frequency. Results for a specific example operating at L and X bands (a frequency ratio of 8:1) are presented. The impedance bandwidth for both bands is > 6%, with isolation within bands > 20 dB and isolation between bands > 40 dB. The element and feed network also has the advantage of being compact enough to be used in arrays, providing dual polarised dual-band operation from a single low-profile aperture.