Miracle-dz/UniFAR-FTUs huggingface dataset:
Analysing the Effect of Portfolio Concentration Index and Stock Market Correlation

The objective of this research was to test the effect of portfolio concentration on market correlation. The relationship between stock market linkages and portfolio concentration was investigated to gain a better understanding of the vulnerability that a country is subjected to during a global financial crisis. The portfolio concentration index of a country reflects its portfolio investment strategy and design, whether it prefers to concentrate its portfolio of stocks in a handful of target markets or to geographically diversify its investments. It was found that countries that had invested disproportionate weights in selected financial markets were significantly different from those countries that held less concentrated portfolios in terms of their effect on financial market integration. The portfolio concentration index, real interest rate differential, industrial production growth differential, and stock market size differential were statistically significant in influencing the correlation in stock returns when a fixed effects model was employed for a sample of 25 investing and 27 investee countries from 2001 to 2014. This study implied that although portfolio allocation affects financial market integration, it is not significantly related to financial spill-overs during crisis periods. The findings may shed light for investors regarding portfolio designs and allocation decisions.
Abstract 20131: Prediction of Ventricular Tachyarrhythmias in Patients With Implantable-Cardioverter- Defibrillator

Introduction: Implantable-cardioverter defibrillator (ICD) therapy has been shown to be effective in reducing mortality in patients with or at risk of sudden cardiac death. However, the burden of ICD therapies has recently been observed to correlate with increase in morbidity and mortality. Hypothesis: Ventricular tachyarrhythmias (VTVF events) could be predicted days in advance with a weighted score based on device-derived parameters. Methods: Twenty-five ICD-indicated patients were prospectively enrolled. After implantation of ICD, each patient underwent weekly data collections by remote monitoring (Carelink, Medtronic) for 6 months and appropriate VTVF events were determined. A VTVF event could be a single discrete ventricular tachycardia (VT) or ventricular fibrillation (VF) episode or a VTVF storm with inter-episode interval less than 24 hours. An algorithm was developed to create a weighted score based on the assessment of directional changes in multiple device-derived parameters in Carelink Cardiac Compass over a 15-day moving window. The algorithm for VTVF prediction was then retrospectively tested based on the comparison between the weighted score one day before an event vs. the score calculated for immediately prior 15-day window. The efficiency of the prediction in one day before an event was determined with the sensitivity and the specificity. Results: The patients enrolled in this study had LVEF 45.0±15.4% and NYHA class 1.4±0.6. Eleven (44%) had coronary heart disease, 14 (56%) had ischemic or non-ischemic cardiomyopathy, 7 (28%) had hypertension, and 20 (80%) had a history of sustained VT or VF. Of 25 patients, 10 (40%) developed a total of 123 appropriate VTVF episodes (12.4±13.2, median 5 per patient) that were terminated by ICD therapies. Of these 123 episodes, 100 were classified as VT while remaining 23 episodes were VF. When the weighted-score algorithm was tested in all 25 patients, the prediction of VTVF events one day before the occurrence had a 100% sensitivity and 74% specificity. Conclusions: VTVF events in ICD patients can be predicted one day in advance by a weighted score algorithm. This may provide a time window for executing appropriate measures to prevent the occurrence of VTVF and especially VTVF storms.
EFFICACY OF RECIPROC R40 AND REVO-S IN PREPARATION OF OVAL ROOT CANALS- AN EX-VIVO CONE BEAM COMPUTED TOMOGRAPHY STUDY

Aim: To evaluate the efficacy of Revo-S and Reciproc R40 NiTi files in preparation of oval root canals using Cone Beam Computed Tomography (CBCT). Methodology: Forty extracted single rooted premolars were divided into 2 groups (n=20). Group 1 (R-S) were prepared with Revo-S up to size #40/. 06. Group 2 (R40) were prepared to the same size with a single file R40. Pre- and post-instrumentation CBCT scanning was done. Calculated parameters were: increase (D) in canal volume and surface area. Transportation, centering ability, and untouched canal areas were tested at 3, 6, 9 mms axial sections. Statistical analyses were made using Mann-Whitney U and Friedman’s test (P ≤ 0.05). Results: Significant increase in D volume (P =.000 and P=.003 for R-S and R40 respectively) and D surface area (P =0.048 and P =0.038 for R-S and R40 respectively) was found for both instrumentation kinematics with no significant differences between them. Canals’ transportation and decreased centering ratio were detected in both groups at all tested levels with insignificant smaller values in the M-D direction. Exception was found at 9mm level where a significantly highest transportation was found in R-S group (P= 0.022). Both instruments left untouched canal areas which were insignificantly greater in R-S group (26.5 ± 8.93% for R40 and 31.7 ± 4.96% for R-S). Conclusions: The tested systems caused small canal transportation with a comparatively better centering for Reciproc R40. Irrespective of the instrumentation kinematic, circumferential preparation of oval canals remains an inherent incapability. CBCT is a valuable tool allowing calculation of the canals’ volume.
Managing School Climate Issues at the School District Level: A Comprehensive Review of the Literature

Several research have studied how school management impacts cognitive and non-cognitive components of students’ lives. However, less is known about what district level administrators do when dealing with issues concerning school climate. This study aims a comprehensive review of the literature on school district level involvement in school climate, with focus on the underlying school climate construct, methods, and associated outcomes. The results show four dominant dimensions: community, safety, risk, and academic performance. District level administrators are concerned not only of students’ but also of teachers’ wellbeing, with special focus placed on teacher stress and burnout. Despite the positive impact of informed decision making on school performance, accountability pressures involved in meeting evaluation criteria may offset the benefits. Our review confirms the need to support district leadership to set the goals and measure the progress of successful strategies to manage school climate issues.
An A ∗ Search Algorithm for the Constrained Longest Common Subsequence Problem

Motivation: The constrained longest common subsequence (CLCS) problem was introduced as a speciﬁc measure of similarity between molecules. It is a special case of the constrained sequence alignment problem and of the longest common subsequence (LCS) problem, which are both well-studied problems in the scientiﬁc literature. Finding similarities between sequences plays an important role in the ﬁelds of molecular biology, gene recognition, pattern matching, text analysis, and voice recognition, among others. The CLCS problem in particular represents an interesting measure of similarity for molecules that have a putative structure in common. Results: We propose an exact A ∗ search algorithm for effectively solving the CLCS problem. This A ∗ search is guided by a tight upper bound calculation for the cost-to-go for the LCS problem. Our computational study shows that on various artiﬁcial and real benchmark sets this algorithm scales better with growing instance size and requires signiﬁcantly less computation time to prove optimality than earlier state-of-the-art approaches from the literature.
Phenylethyl Resorcinol Loaded in Liposomal Cream Formulation for Cosmeceutical Application

Phenylethyl Resorcinol (PR) is a cosmeceutical skin lightening agent and the purpose of this study was to enhance its stability by using liposomal cream formulation which increases local efficacy and safety. Liposome formulation was prepared by modified ethanol injection method, and it contained soy phosphatidyl choline (SPC), cholesterol (CHO), Tween 80 (TW80) and deoxycholic acid (DA) mixed with 2% PR. The physicochemical properties, skin permeation as well as cellular study were evaluated in order to obtain the optimized formulation. The optimized liposome formulation composed of SPC:TW80:DA (84:16:2.5) and exhibited vesicle size, polydispersity index (PDI) and zeta potential of 286.4±8.04 nm, 0.317±0.03 and -39.20±3.85 mV, respectively. Entrapment efficiency (EE) of liposome formulation was 93.55±0.05%. The vesicle was spherical in shape and showed good physicochemical stability for 4 months. The skin permeation study demonstrated that liposome with a negative charge could result in a high PR skin deposition value of 1732.76±216.24 μg/cm 2 after 24 h. Cellular study showed that liposome formulation could inhibit melanin content in B16 melanoma cells and enhance cell viability in HaCaT keratinocyte cells. The Original Research Article Raknam et al.; JPRI, 32(1): 64-76, 2020; Article no.JPRI. 54920 65 optimized PR liposome was incorporated in cream and investigated physicochemical properties, stability and skin permeation. Liposomal PR cream showed a good stability and a superior result than PR cream in skin permeation parameters, as well as in tyrosinase inhibition.
School Choice and Marginalization: The Case of School District Competition and Political Institutions in the U.S.

This paper studies effectiveness of school choice and type of school districts’ political institutions jointly vis-a-vis student learning. School choice relies on market-oriented policies for reforming public education, but their effectiveness, i.e., equity and productive efficiency is debatable. The effectiveness of different types of political institutions that manage school districts and compete for students in urban regions in the USA is also a neglected area of research. This study fills these gaps by empirically investigating the joint relationships of inter-school district competition- a key dimension of school choice- and local political institutions with student learning. Results from the analysis of a unique data show that inter-school district competition has some productive efficiency effects on student achievement, the political institution does not. The inter-school district competition and political institutions have differential equity effects on student achievement. This paper substantively discusses these results in the context of school choice and marginalization.
Extracting the Depth and All-In-Focus Image from a Focal Stack

Modern cameras have a number of imaging parameters (e.g., aperture, focal length, and focus distance) that can be changed quickly between successive image captures. Depending on the speciﬁc hardware conﬁguration of the camera, different imaging parameters result in different images, with the primary difference being which depths are in focus. In this project we consider focal stacks, which are a number of images taken of the same scene with different imaging parameters. Given a focal stack, we consider the problem of simultaneously extracting the all-in-focus image, i.e., the image where every depth is in focus, and the depth of each pixel in the image. We frame this problem as an inverse problem, with a particular image formation model, and pro-pose a number of solution algorithms, including gradient descent, alternating minimization, and ADMM. We apply our gradient descent method to simulated images as well as images taken with a Samsung Galaxy S8 Active Android smartphone, and ﬁnd the performance satisfactory.
Integrating Edmodo Into English Instruction: Students’ Perceptions And Its Contribution To Autonomous Learning

This paper aims at exploring the students’ perceptions of the teacher’s use of Edmodo in English instruction and its contribution to the development of autonomous learning. Therefore, the questions addressed in this study are 1) How do the students perceive the teacher’s use of Edmodo in English instruction? and 2) How does the teacher’s use of Edmodo contribute to the students’ autonomous learning? An English teacher and 34 students of a public senior high school in Semarang, Central Java, Indonesia were recruited to involve in this study. The research data gained through questionnaires and interviews were analyzed qualitatively. It employed Thematic Analysis by Braun and Clarke (2006). The study revealed that the students were positive about the use of Edmodo to facilitate English learning. Edmodo was considered useful, helpful and practical both as learning and assessment media which enabled the students to enhance English ability. Besides, they could access it anywhere anytime with the support of mobile devices. Additionally, the students responded positively that Edmodo could contribute to student autonomous learning. Edmodo allowed the students to manage their own learning activities, for examples, monitoring learning, selecting appropriate learning strategies, controlling feelings, and enhancing motivation. In spite of the fact that sometimes they encountered problems accessing the site due to limited quota and unstable Internet connection.
Determinants of Credit Market in Indonesian Banking Industry

This study aims to find out determinants of conventional banks’ credit supply and demand in Indonesia between 2005 and 2014, a period after recovery from financial crisis in 1997/1998. Some literatures suggest that demand and supply of credit are determined by the rates of credit and bonds. This study is expected to contribute to the literature by considering the role of prudential policy, market structure and banks ownership on supply and demand for credits. By using the bank level yearly data, the Seemingly Unrelated Regression model is employed to manage simultaneity between demand and supply of credit. The empirical findings support the literature that in the case of Indonesian banking, demand and supply of credit are determined by the rates of lending and yields of bonds and the rates of Bank Indonesia Certificate (Sertifikat Bank Indonesia/SBI). This study also reveals that prudential regulation has even dampened the banks’ capability to supply lending. By implication, banks’ higher lending capacity could improve their supply of credits. Hence, larger banks are proved to be able to supply more credits than the smaller ones; whereas the demands for credit remain to be substantially determined by the macroeconomic conditions.
Inside-out against outside-in inverse solutions for estimating atrial fibrillation sources

Atrial fibrillation (AF) is the most frequently occurring cardiac arrhythmia. Further understanding of the drivers and maintainers of AF is still necessary to improve treatment strategies and outcome. This thesis focussed on identifying AF sources using body-surface mapping and non-contact endocardial mapping (NCM, inside-out inverse solution) data. Analysis was focussed on dominant frequency (DF) and highest dominant frequency (HDF) behaviour. Atrial sources on the atrial muscle were estimated from body surface mapping (BSM) using a heterogeneous torso model (outside-in inverse solution). The current work has shown that a significant difference exists between the DF and HDF behaviour on the BSM and NCM data. This shows the effect of the torso volume conductor on BSM data as previously suggested in simulation studies. This effect should be taken into account when analysing BSM data for diagnosing AF. In this work, a new inside-out inverse solution was developed based on equivalent double layer cardiac sources. This was compared to commercially available software (EnSite, St Jude Medical), which was considered the gold standard. This system is based on a potential-based transfer, and therefore only provides a “closer look” at the pericardial potentials, but does not estimate sources. Due to this variation in source model, significant differences could be found between the inverse solutions, leading to high regularisation parameters to force the home-made inverse solution to be as equal as possible to the gold standard. This also meant that high-frequency components could not be reproduced accurately with the home-made algorithm, leading to significant variation in DF and HDF behaviour between both inside-out inverse solutions. Lastly a double-layer based outside-in inverse solution was developed and compared to the gold standard inside-out inverse solution. Although both solutions originate from a different source model, it was possible to reconstruct simple AF behaviour based on the HDF behaviour.
Functional Barriers to Workers’ Co-operatives in Getting Off the Ground: Synthesis of a Failed Case in India

In this paper the authors examine the deficiencies, challenges, and eventual failure of an attempt by a group of separated miners1, in response to the company’s decision to shut down the quarry, to reopen a closed mine by establishing a co‐operative. The study, carried out in eastern India during 2009‐10 assesses the functional barriers to establishing the workers’ co‐operative. Evaluation of the case reveals several deficiencies in its plan, the major ones being: the relationship of the co-operative’s members with the means of production and allocative efficiency, failure to generate interests among separated executives towards working for the interest of the co‐operative, failure to manage distribution relations and finally the members’ poor grasp of the financial feasibility and fiscal compatibility of the overall operations. The company, being a large central public sector establishment, over protected by the government’s policies was also incapable of leveraging the opportunities created. All these factors led to some adverse implications insofar as the functioning of the co‐operative is concerned. The authors allude to the tensions in such situations between the craving and imaginings of workers for something better and more humane than capitalism can provide in terms of management, employment conditions and work organisation, and their pragmatic concern to provide continuing employment when faced with closure. A focus on the issues of potential obstacles for members of co‐operatives is of interest in the contexts of India and other developing economies, as well as in rather different contexts of developed economies.
The Impact of Headmaster’s Servant-Leadership Practices towards Teachers’ Commitment in Betong, District of Sarawak

This study is aimed to investigate the effects of servant-leadership practices towards teachers’ commitment to the school. The population comprised of teachers who serve in primary schools, Betong Division, Sarawak. The data obtained through survey method using a questionnaire comprising Organizational Leadership Assessment (OLA), and TCM Employee Commitment Survey that was answered by a total of 310 teachers. The quantitative data obtained from questionnaires is analyzed using descriptive statistical method and inferential analysis such as t tests, ANOVA and regression. The findings show that the headmasters’ servant-leadership has a positive and significant relationship of teacher commitment to the school. In addition, the headmasters’ servantleadership found to be predictor to the commitment of teachers to the school.
Simulation Reveal How Mutations in Functional Plasticity Regions Guide

Monoterpenes (C10 isoprenoids) are a structurally diverse group of natural compounds that are attractive to industry as flavours and fragrances. Monoterpenes are produced from a single linear substrate, geranyl diphosphate, by a group of enzymes called the monoterpene cyclases/synthases (mTC/Ss) that catalyse high-energy cyclisation reactions intermediates. Efforts towards producing monoterpenes via biocatalysis or metabolic engineering often result in the formation of multiple products due to the nature of the highly branched reaction mechanism of mTC/Ss. Rational engineering of mTC/Ss is hampered by the lack of correlation between the active site sequence and cyclisation type. We used available mutagenesis data to show that amino acids involved in product outcome are clustered and spatially conserved within the mTC/S family. Consensus sequences for three such plasticity regions were introduced in different mTC/S with increasingly complex cyclisation cascades, including the model enzyme limonene synthase (LimS). In all three mTC/S studied, mutations in the first two regions mostly give rise to products that result from premature quenching of the linalyl or  -terpinyl cations, suggesting that both plasticity regions are involved in the formation and stabilisation of cations early in the reaction cascade. A LimS variant with mutations in the second region (S454G, C457V, M458I), produced mainly more complex bicyclic products. QM/MM MD simulations reveal that the second cyclisation is not due to compression of the C2-C7 distance in the  -terpinyl cation, but is the result of an increased distance between C8 of the  -terpinyl cation and two putative bases (W324, H579) located on the other side of the active site, preventing early termination by deprotonation. Such insights into the impact of mutations can only be obtained using integrated experimental and computational approaches, and will aid the design of altered mTC/S activities towards clean monoterpenoid products. which are residues important for the activity of LimS 27 . Such insights into the impact of mutations can only be obtained from simulation and is a key benefit of adopting a multidisciplinary approach to investigate enzyme catalysis. The results obtained in this study will help provide a general basis to guide rational engineering of members of the plant monoterpene synthase family, and is an important step towards the predictable and tuneable engineering of mTCSs for efficient production of desired terpenoids.
Comparative Analysis of Polymer Matrix Composites processed by Injection and Compression Molding

Natural fibers are potentially a high-performance and non-abrasive reinforcing fibres source. Coir fibers are a byproduct derived from coconut fruit. Coir fibers are an agricultural waste extracted from the outer shell of coconut fruit and are abundantly available in southern India. In this study, mechanical properties of short coir fiber reinforced polypropylene composites fabricated by compression and injection molding process are examined. These were chopped to a length of 2-5 mm. The effect of fiber loading on the tensile and flexural properties of compression molded composites is evaluated and results indicate that there is no significant improvement with the addition of fibers from 3 to 15%. Whereas, injection molded specimens (PP/(15) Coir) have shown 58.75% and 25.82% increase in tensile and flexural strength respectively, compared to neat PP. The tensile and flexural modulus of injection molded composites also increased by 47.42% and 58.84% respectively as compared to neat PP. Hence, the tensile and flexural properties of the developed composites clearly indicate towards injection molding as a better fabrication process for short fiber reinforced composites compared to compression molding.
Experimental ethnographies of early intervention: a new ‘gold standard’?

Early intervention in child development has become co-existent with program evaluation by means of randomized controlled trials (RCTs). Although the polarized debate between detractors and promoters of quantitative methods is fading as the idea of interdisciplinarity gains programmatic traction, RCTs are still considered the “gold standard. ” The application of mixed methods remains limited in evaluation of program effectiveness. In this article I propose three possible forms of integration between ethnography and RCT in the field of early intervention in child development. I argue that such an integration is beneficial for evaluation research and, thus, for the delivery of better early intervention services.