Miracle-dz/UniFAR-FTUs huggingface dataset:
Comparative Evaluation of Open Flap Debridement Therapy with Two Different Types of Platelet Concentrates, T-PRF and L-PRF as Adjuncts- A Systematic Review

Conventional Periodontal therapy such as scaling and root planing and open flap debridement aims to halt the inflammation process and promotes repair of disease-related defects. Current regenerative procedures offers a limited potential toward attaining a complete periodontal restoration and none is considered a gold standard in the treatment of intrabony defects. This study was done to compare the efficiency of Titanium-Platelet Rich Fibrin and Leukocyte-Platelet Rich Fibrin as adjuncts to Open Flap Debridement therapy to treat intra-bony periodontal defects. A search was conducted through PubMed and various other databases such as Cochrane, Google Scholar and EBSCO Host , under the key words, OFD , T-PRF,L-PRF, Clinical Outcomes, Comparison and Randomised Contolled Trials. Six relevant articles were selected for analysis. Compared to non-platelet concentrates, L-PRFproves to be the better adjunct to open flap debridement therapy. When compared to T-PRF, however, L-PRF has comparatively inferior properties of bone defect resolution and fill.We can conclude that T-PRF has better properties, greater bone defect fill and defect resolution as compared to L-PRF.
The problem of entanglement: Biases and fallacies in police conflict management

Cognitive biases have been identified as drivers of the excessive use of force, which has determined current affairs across the globe. In this article, we argue that the police are facing serious challenges in combating these biases. These challenges stem from the nature of cognitive biases, their sources and the fallacies that mislead police professionals in the way they think about them. Based on a framework of expert decision-making fallacies and biases, we argue that these fallacies limit the impact of efforts to mitigate cognitive biases in police conflict management. In order to achieve a systemic understanding of cognitive biases and their detrimental effects, the article concludes that implementing reflexive structures within the police is a crucial prerequisite to effectively reflect on external influences and to limit bias and fallacies from further unfolding in a self-referential loop.
Industrial Training Programmes of Polytechnics in Ghana: The Pertinent Issues

In today’s world of stiff competition in the labour market, coupled with advanced technology, industries require ofstudents to have job experience before employing them. The challenge here is that the experience being required isnot taught in the lecture rooms. The reality is that, it is only gained though hands on the job, thus real worldconfrontation popularly called industrial attachment a platform for students arm themselves with all the skill,knowledge and demanded experience. This article examines the industrial attachment programmes of polytechnics inGhana and pertinent issues involved. The paper tackled the problem from four thematic areas; the preparation beforethe training starts, the perceived challenges encountered, the benefits derived from embarking on the training andsuggested strategies to be employed to enhance the programme.
Demanda energética e mobilização do solo com o uso de escarificadores em sistemas de semeadura direta

Reduction in sowing period and intensification of production in no-tillage system, promoted an increase in the frequency of the use of machines and implements, causing compaction of soil due to traffic. The compaction, in addition to affecting the development of plant roots, increases the power demand of the implements, justifying the use of chisel plows for soil decompactation. The performance of two chisel plows (Shank + tip), one commercial and one experimental, was evaluated to understand the chiseling (scarification) operation adapted to no-tillage system and compare two chisel plows, using as parameters such as energy and soil variables. The experimental decompactation element performed better in comparison to commercial, in key variables, such as fuel consumption, power and traction force. When installed ahead of descompactation elements the cutting disc did not alter the traction force and reduced the fuel consumption and power. The increase in the speed provided an increase in traction force, power and fuel consumption.
A tunable photonic RF notch filter based on opto‐VLSI technology

In this paper, we propose a novel tunable transversal photonic RF notch filter based on opto‐VLSI technology. By using an array of fiber Bragg gratings (FBGs) in conjunction with an opto‐VLSI processor, the broadband light source can be spectrally sliced and attenuated, hence realizing a two‐tap RF notch filter with stepwise true‐time delays and variable weights. In addition, the free spectral frequency and notch depth of the RF notch filter can be tuned by driving the opto‐VLSI processor with optimized phase‐only holograms. We experimentally demonstrate the proposed tunable RF notch filter structure and the results show that a notch depth greater than 40 dB can be attained. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1011–1015, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21586
Reduction in fluctuation of the accelerating force in linear induction launchers

In a linear induction launcher, both the barrel and the projectile are of finite length. This causes the force-displacement curve to have a jagged shape. The reasons are: the barrel is partitioned into sections; end effects are present; dc components exist in the input currents; and the drive coils are of finite width. The first three factors were dealt with in our previous publications. This paper describes how to improve the performance of a four-section linear induction coil launcher, powered by synchronous generators, by redesigning the drive coils so that they may be fed by a five-phase source rather than the customary three. The paper presents the drive-coil design criteria, the reasoning behind the selection of the firing sequence for each of the four sections, and the improved accelerating force curve.
Non-resonant conductor reflectarray element for linear reflection phase

A reflectarray element using a conductor cell with variable height is proposed. It is found that the reflection phase can be tuned by adjusting the height of the conductor cells arranged on the spatially discretised reflector plane. A complete linearised reflection phase thus can be achieved when the proposed conductor cell is used as a unit element. A millimetre-wave antenna has been designed using the proposed method and it shows 50% aperture efficiency with a half-wavelength cell height variation.
Associations Between Changes in Loneliness and Social Connections, and Mental Health During the COVID-19 Pandemic: The Women’s Health Initiative

Abstract Background Older women have faced significant disruptions in social connections during the coronavirus disease 2019 pandemic. Whether loneliness increased or whether a change in loneliness from pre- to intrapandemic period was associated with mental health during the pandemic is unknown. Methods Older women (n = 27 479; mean age 83.2 [SD: 5.4] years) completed surveys in mid-2020, including questions about loneliness, living arrangements, changes in social connections, and mental health. Loneliness was also previously assessed in 2014–2016. We examined whether loneliness changed from the pre- to intrapandemic period and explored factors associated with this change. In multivariable models, we investigated the association of changes in loneliness and social connections with mental health. Results Loneliness increased from pre- to intrapandemic levels. Factors associated with worsening loneliness included older age, experiencing stressful life events, bereavement, histories of vascular disease and depression, and social connection disruptions. Factors associated with a decrease in loneliness included identifying as Black, engaging in more frequent physical activity, being optimistic, and having a higher purpose in life. A 3-point increase in loneliness scores was associated with higher perceived stress, higher depressive, and higher anxiety symptoms. Social connection disruptions showed modest or no associations with mental health. Conclusions Loneliness increased during the pandemic in older women and was associated with higher stress, depressive, and anxiety symptoms. Our findings point to opportunities for interventions targeting lifestyle behaviors, well-being, disrupted social connections, and paying closer attention to those with specific medical and mental health histories that may reduce loneliness and improve mental health.
Switched-capacitor inverter with high power density and enhanced regulation capability

A DC-AC inverter containing no inductors or transformers is presented. The role of the magnetic devices is played by a switched-capacitor (SC) circuit, formed by two subcircuits. Each SC-subcircuit contains 15 basic cells, each one formed by one capacitor, two MOSFETs and two diodes. The sinusoidal output waveform is realized in a staircase, formed by 64 steps. To achieve each step, the inverter operates like a step-up DC-DC converter: by using a certain number of SC-cells, the input voltage is boosted to the voltage required by the step in consideration. Each step is implemented in a large number of switching cycles. In each cycle, the inverter goes through four phases; according to a designed switching sequence, some of the capacitors of the SC-cells involved in the respective step are in a charging process from line, while the others are in a discharging process to the load. The phases 2 and 4 have a regulation role only. A duty cycle control is used. A Fourier analysis evidences the clean AC output waveform. The inverter exhibits low weight, high power density, and enhanced regulation for large changes in line and load.
Knowledge in pollution-saving technological change

This thesis looks at the role that technical knowledge plays in the transition in industry away from pollution-intensive production methods. It uses econometric techniques and qualitative analysis to test three aspects of the relationship between knowledge and pollution-saving technological change-related outcomes, all in the context of US industry, and all with respect to conventional pollutants. The first paper observes that the level of industrial environmental R&D spending steadily declined from the late 1970s onward. Employing an estimation model with industry fixed effects, the hypothesis is tested that this decline was the result of the conditioning effect of greater flexibility in the design of the environmental policy on the environmental regulatory burden born by industry. The second paper investigates the sources of the change in SO2 intensity of electricity production undergone by electric power plants under the SO2 cap and trade program. Mixed methods including quantile regression are used to compare the effect of frontier technical knowledge on the extent of change undergone, relative to the effect of knowledge un-intensive techniques. The third paper investigates why a small number of inventions aimed at controlling pollution from automobiles turned out to be so much more technologically influential than the great majority of comparable inventions, which exerted very little technological influence at all. Negative binomial regression is used to test the effect of the composition of the stock of knowledge that the automobile companies brought to bear on the inventive process. These studies find that pollution-saving technological change is characterised more by the repurposing and adaptation of existing knowledge and by the churn among existing technologies, than by universal technological advance in dedicated environmental technologies. The implications for climate mitigation policy are discussed in the conclusions.
How much does sleep vary from night‐to‐night? A quantitative summary of intraindividual variability in sleep by age, gender, and racial/ethnic identity across eight‐pooled datasets

Habitual sleep duration and efficiency vary widely by age, gender, and racial/ethnic identity. Despite growing research on the importance of night‐to‐night, intraindividual variability (IIV) in sleep, few studies have examined demographic differences in sleep IIV. The present study describes typical sleep IIV overall and by demographics among healthy sleepers. Eight datasets of healthy sleepers (N = 2,404; 26,121 total days of sleep data) were synthesised to examine age, gender, and racial/ethnic identity differences in sleep IIV measured via diaries, actigraphy, and electroencephalography (EEG). Sleep IIV estimates included the intraindividual standard deviation (iSD), root mean square of successive differences (RMSSD), coefficient of variation (CV), and a validated Bayesian Variability Model (BVM). There was substantial IIV in sleep across measurement types (diary, actigraphy, EEG) for both sleep duration (iSD: 85.80 [diary], 77.41 [actigraphy], 67.04 [EEG] minutes; RMSSD: 118.91, 108.89, 91.93 minutes; CV: 19.19%, 19.11%, 18.57%; BVM: 60.60, 58.20, 48.60 minutes) and sleep efficiency (iSD: 5.18% [diary], 5.22% [actigraphy], 6.46% [EEG]; RMSSD: 7.01%, 7.08%, 8.44%; CV: 5.80%, 6.27%, 8.14%; BVM: 3.40%, 3.58%, 4.16%). Younger adults had more diary and actigraphy sleep duration IIV. Gender differences were inconsistent. White and non‐Hispanic/Latinx adults had less IIV in sleep duration and efficiency compared to racial/ethnic minority groups. Even among healthy sleepers, sleep varies widely from night‐to‐night. Like mean sleep, there also may be disparities in IIV in sleep by demographic characteristics. Study results help characterise normative values of sleep IIV in healthy sleepers.
Not so ‘rare’—an example of malignant melanoma in India: report from a tertiary cancer centre

Purpose Malignant melanoma (MM) is rare in India. Indian data on demography and treatment outcome on advanced MM is very limited in the literature. Materials & methods This is a retrospective study of advanced MM treated between January 2013 and December 2020. We evaluated the clinicopathologic features, mutational profiles, survival outcome and prognostic factors in advanced MM patients. Results Out of a total 460 patients, 185 (42%) had metastatic disease at presentation and were enrolled in this study with a median age of 63 years (range: 28–93) and male:female ratio of 94:91. The mucosal primary was predominant (n = 110, 59%) than cutaneous primary (38%) and anorectum was the most common site (n = 84, 45%). Tumour mutational analysis was performed in 65 (35%) patients. BRAF mutations were detected in 12 patients and KIT mutations in 7 patients. Thirteen patients didn’t have any mutations and 22 patients had mutations other than KIT & BRAF. Only 59 (32%) patients took any systemic treatment – immune checkpoint inhibitors (ICIs) in 17, temozolomide in 18 and paclitaxel/carboplatin in 18, tyrosine kinase inhibitors in 6 patients. After a median follow-up of 26 months (95% confidence interval (CI): 11.6–not reached), median progression-free survival (PFS) was 7.1 months (95% CI: 4.4–9.1) and median overall survival was 14.8 months (95% CI: 7.7–18.2 months). The use of ICI emerged as an only significant good prognostic factor (p ≤ 0.001) for PFS, on multivariate analysis. Conclusion Mucosal origin was more common than cutaneous primary with anorectum being the most common site. BRAF mutation was less as compared to published literature. Very few patients received systemic therapy and the use of ICI showed superior PFS.
Photonic integrated polymer components and circuits by UV-induced refractive index modification

Deep UV-induced modification of the refractive index of polymers is a useful technique for low cost realization of integrated optical circuits for telecommunication und sensor applications. The combination with replication techniques like injection molding and hot embossing give the capability of a monolithic integration of these waveguide structures in optical or fluidic microsystems. In addition the hybrid integration of these integrated optofluidic microsystems with organic or inorganic photodiodes will open up the possibility to development novel, cheap, disposable integrated optical sensors for environmental, chemical and biological monitoring.
The growing importance of ecological factors to employees in the transport and logistics sector

Abstract The motivational preferences of employees can be statistically determined, but not lifted out of context in terms of the field they work in. The transport and logistics sector is undergoing a significant transformation, characterised by new technological solutions in everyday practice. It is a sector subject to a high number of legislative, economic, social, technological and environmental changes. Such changes have a secondary influence on the expectations, values and therefore preferences and job satisfaction of employees. The objective of this contribution is to identify the development of the motivational preferences of employees in the transport and logistics sector over time. These changes are monitored within the context of key changes and the strategic direction of the sector. The achievement of the objective is based on the partial results of research conducted by means of a questionnaire survey (n = 3,543) on motivational preferences and job satisfaction within the field. The ANOVA test and Tukey’s HSD test were used for the verification of the hypotheses. The results show that employee preferences are changing significantly, with the most significant increase being identified in the case of social factors (environmental approach, corporate vision and regional development), reflecting current green innovation trends in the sector. Also, employees perceive education and professional growth, self-realisation, competencies, corporate prestige, physical and mental demands, content and type of work, working hours and environment and such feedback on results as increasingly important. On the other hand, there is declining emphasis on basic salary.
Equivalent capacitances of coplanar waveguide discontinuities and interdigitated capacitors using a three-dimensional finite difference method

Equivalent capacitances of coplanar waveguide discontinuities on multilayered substrates are calculated using a three-dimensional finite-different method. The application of the method is demonstrated for open ends and gaps in microstrip and coplanar waveguides, as well as for more complicated structures such as interdigitated capacitors. The main advantage of the method is its flexibility in treating multilayered substrates and different conductor configurations. It can therefore be applied to more complicated structures such as interdigitated capacitors, air bridges, and waveguide transitions. The effect of conductor metallization thickness and shielding walls is also taken into account. Good agreement between the calculated data and measurements up to 25 GHz in the case of coplanar structures indicates the validity of the static analysis even for high frequencies. >
Service Quality and Customer Satisfaction in Hospitality, Leisure, Sport and Tourism: An Assessment of Research in Web of Science

ABSTRACT Service quality and customer satisfaction (SQCS) have been one of the most-discussed themes in the last two decades in tourism and hospitality research. Several new dimensions have been added by the later researchers and the area have been expended to allied and peripheral areas of tourism and hospitality. The present study is an attempt to analyses emerging themes and trends scientifically in SQCS research in tourism and hospitality and explore future research directions. The study employs bibliometric analysis of literature using bibliometrix R package. The database for the current study has been prepared from Web of Science. The results reveal a steady growth in SQCS research during the study period, especially in the hospitality sector and that “customer satisfaction” and “satisfaction” as the two major themes of SQCS research. Thematic network analysis of the SQCS publications revealed destination loyalty, customer value, customer experience, and emotional labor as important themes covered in SQCS research in tourism and hospitality.
Accurate computation of electromagnetic forces in switched reluctance motors

The theory and practice of electromagnetic force calculations are briefly summarized. Different factors causing numerical errors of magnetic forces are systemically analyzed, and the methods to avoid those errors in Maxwell's stress tensor method are discussed. It is suggested that three layers of finite elements in the air-gap of electrical machines, instead of two element layers used by many magnetic experts, be used for accurate computations. An example of the force computation and torque test of the SRM is presented to validate the theoretical analysis in the paper.
Challenging Accepted Wisdom about the Place of Conceptions of Teaching in University Teaching Improvement

In recent years, conceptions of teaching held by academic staff have achieved an increased focus in the scholarly and practical work of teaching developers. Views on the impact of conceptions of teaching on improving university teaching, as well as their significance in doing so, vary from those that advocate changing conceptions as a necessary first step in the process of improvement to more recent views that characterize conceptions of teaching as merely artifacts of reflection on teaching. This paper explores this range of views, raises a number of questions about the current accepted views on the importance of conceptions of teaching development work, and challenges the current accepted wisdom in this important area. Teaching development can play a critical role in ensuring the quality of teaching and learning in universities. However, a proportion of teaching development currently carried out and discussed in the literature is underpinned by a set of assumptions that may not be accurate. These assumptions are related to the part that university teachers’ beliefs about or conceptions of teaching (COTs) may play in improving teaching. This paper explores the assumed place of COTs in an attempt to help university teachers improve their teaching. Three assumptions underpinning the use of COTs in teaching development work are examined in detail and questions about each are raised. Through this examination, the central question about the place of COTs in teaching development is explored and deliberately questioned and challenged. The paper takes on the position of “devil’s advocate” and, in seeking to challenge accepted wisdom in this area, presents arguments that are contrary to current widely accepted views about the place of COTs in teaching development and improvement. The paper does not seek to argue that COTs are unimportant but to argue that it is timely to examine and challenge their often assumed primary position in efforts to improve teaching. In order that there is clarity about how COTs should be used to improve teaching and student learning, their precise impact and role in such improvement should be understood clearly. By taking a questioning and critical stance, this paper is a deliberate re-examination of our collective wisdom in the area of COTs.