Miracle-dz/UniFAR-FTUs huggingface dataset:
Checklist of Orchidaceae from Caquetá, Colombia

﻿Abstract A checklist of Orchidaceae from Caquetá, Colombia is presented here. We recorded 98 genera and 418 species, exceeding a previous inventory by 276 species. The checklist is conservative in the number of genera and species by including only taxa that were fully and reliably identified and that are either linked to a corresponding herbarium voucher, a living collection specimen or a photo taken in the field and published in iNaturalist by one of the authors or a collaborator. The documented species diversity in the region could dramatically increase in the next few years with additional collecting efforts in the eastern slopes of the Andes nested in Caquetá. About 9% (418/4600) of all Orchidaceae species recorded for Colombia are reported for this area, showing the important contribution to orchid diversity of Andean-Amazonian foothills of Caquetá.
Joint Maximum Likelihood Estimators for Gutenberg-Richter Parameters λ0 and β Using Subcatalogs

Two new estimators of parameters λ0 and β of the Gutenberg-Richter seismicity relation are presented for the case in which several complete portions of an earthquake catalog are used in the estimation process. These estimators are the ones that maximize the joint likelihood of both parameters, considering Poisson arrivals. Therefore, as shown in this paper, they are more robust than estimators previously presented in the literature. The numerical effort to compute the new estimators is greater than with previously published formulas because the new method requires solution of an implicit algebraic equation, for which we provide an iteration strategy of fast convergence. In our opinion, the extra effort is warranted in view of the usual scarcity of data and in view of the extra precision that the new method brings.
Bibliometric and visualization analysis of matrix metalloproteinases in ischemic stroke from 1992 to 2022

Background Matrix metalloproteinases (MMPs) are important players in the complex pathophysiology of ischemic stroke (IS). Recent studies have shown that tremendous progress has been made in the research of MMPs in IS. However, a comprehensive bibliometric analysis is lacking in this research field. This study aimed to introduce the research status as well as hotspots and explore the field of MMPs in IS from a bibliometric perspective. Methods This study collected 1,441 records related to MMPs in IS from 1979 to 2022 in the web of science core collection (WoSCC) database, among them the first paper was published in 1992. CiteSpace, VOSviewer, and R package “bibliometrix” software were used to analyze the publication type, author, institution, country, keywords, and other relevant data in detail, and made descriptive statistics to provide new ideas for future clinical and scientific research. Results The change in the number of publications related to MMPs in IS can be divided into three stages: the first stage was from 1992 to 2012, when the number of publications increased steadily; the second stage was from 2013 to 2017, when the number of publications was relatively stable; the third stage was from 2018 to 2022, when the number of publications began to decline. The United States and China, contributing more than 64% of publications, were the main drivers for research in this field. Universities in the United States were the most active institutions and contributed the most publications. STROKE is the most popular journal in this field with the largest publications as well as the most co-cited journal. Rosenberg GA was the most prolific writer and has the most citations. “Clinical,” “Medical,” “Neurology,” “Immunology” and “Biochemistry molecular biology” were the main research areas of MMPs in IS. “Molecular regulation,” “Metalloproteinase-9 concentration,” “Clinical translation” and “Cerebral ischemia–reperfusion” are the primary keywords clusters in this field. Conclusion This is the first bibliometric study that comprehensively mapped out the knowledge structure and development trends in the research field of MMPs in IS in recent 30 years, which will provide a reference for scholars studying this field.
Distance functions on the sets of ordinary elliptic curves in short Weierstrass form over finite fields of characteristic three

Abstract We study distance functions on the set of ordinary (or non-supersingular) elliptic curves in short Weierstrass form (or simplified Weierstrass form) over a finite field of characteristic three. Mishra and Gupta (2008) firstly construct distance functions on the set of elliptic curves in short Weierstrass form over any prime field of characteristic greater than three. Afterward, Vetro (2011) constructs some other distance functions on the set of elliptic curves in short Weierstrass form over any prime field of characteristic greater than three. Recently, Hakuta (2015) has proposed distance functions on the set of ordinary elliptic curves in short Weierstrass form over any finite field of characteristic two. However, to our knowledge, no analogous result is known in the characteristic three case. In this paper, we shall prove that one can construct distance functions on the set of ordinary elliptic curves in short Weierstrass form over any finite field of characteristic three. A cryptographic application of our distance functions is also discussed.
Global existence and asymptotic behavior of solutions to a two-species chemotaxis system with two chemicals

In this paper, we investigate the competitive parabolic-elliptic-parabolic-elliptic two-species chemotaxis system with two chemicals in a smooth bounded domain Ω⊂Rn (n≥1). The existence of global bounded classical solution is proved under mild assumptions on the initial data and appropriate conditions on the strength of the damping death effects. Moreover, for the case when both competition parameters a1 and a2 lie in 0,1, it is shown that such solution stabilizes to spatially homogeneous equilibria in the large time limit.
Hematologic profiles of Beta thalassemia major patients: An institutional cross-sectional study

Introduction: Thalassemia is inherited blood disorder characterized by decreased hemoglobin with two main types-alpha and beta thalassemia. There are two main varieties of β thalassaemia, β0 thalassaemia, in which no β globin is produced, and β+ thalassaemia, in which some β globin is produced, but less than normal. As the patient is diagnosed, regular blood transfusions and chelating treatment is given lifelong. In this study, we observed the haematological profiles of multi transfused thalassemia major patients with the accompanying complications. Aims and Objectives: To study the clinical features with RBC parameters, serum ferritin levels, chelation therapy and prevalence of blood transfusion related infection in multi transfused beta thalassemia major patients. Materials and Method: In this cross sectional study, total 90 diagnosed thalassemia major patients were taken with their complete history, physical examination and laboratory parameters such as-complete blood counts. All the patients were monitored for serum ferritin levels and chelation therapy along with screening for transfusion transmitted infections over a year. All the data were compiled and appropriate statistical analysis was done. Results: In present study out of 90 patients, 54 patients were males and 36 patients were females. Mean age of 15.26 ± 7.04 years with 68.9% (N=62) of cases required twice monthly transfusion, 30.0% (n=27) cases required once a month transfusion. 25 cases were found to be HCV+ (27.78%), 3 were HIV + (3.3%) and 62 cases were n on-reactive (68.89%). On first post transfusion CBC we found that 30 cases (33.33%) were found to be adequately transfused with levels > 10 gm%, where as in second results 34 cases (37.78%) were found to be adequately transfused with levels >10 gm%. Mean of average yearly average ferritin values in the study duration was found to be 4724 ± 287.65 ng/mL. The chelating agent dose was with mean 1040 mg and standard deviation 476.19. Conclusion: In the present study, it is concluded that haematological parameters like Haematocrit, Red Blood Cell mass, Haemoglobin and Mean Corpuscular volume had large covariances and Serum Ferritin levels was positively correlated with chelation therapy along with increased rate of transfusion transmitted infections in multi transfused thalassemia major patients.
The Temporal Semantics of Noun Phrases: Evidence from Guarani

This dissertation presents a crosslinguistic study of the temporal semantics of noun phrases. Through an investigation of languages with “nominal temporality markers”, i.e. markers that attach to noun phrases and affect their temporal interpretation, I propose that the semantic categories grammatical aspect and modality, but not tense, are relevant to the temporal interpretation of noun phrases. I propose a dynamic semantic theory of the temporal interpretation of noun phrases, which sheds light on similarities and differences to the temporal interpretation of verb phrases. Previous discussions of the temporal interpretation of noun phrases (cf. Enç 1981; Musan 1995; Tonhauser 2002) are limited in two ways: they are restricted to data from English and German, and they do not discuss the semantic categories that play a role in the temporal interpretation of noun phrases (besides pointing out that verbal tense does not affect noun phrases). These limitations are remedied in this dissertation by drawing on data from languages with nominal temporality markers. About 20 such languages have been identified, including Guaranı́ (Tupı́-Guaranı́), Halkomelem (Salish) and Movima (isolate in Bolivia). I develop criteria for determining the semantic category of temporal expressions and propose that, crosslinguistically, nominal temporality markers instantiate the semantic categories grammatical aspect, modality and a novel category “existence” that is restricted to noun phrases. I defend this proposal against previous claims according to which the nominal temporality markers are nominal past and future tenses (e.g. Burton 1997; Lecarme 1999; Nordlinger and Sadler 2004). The focus of the dissertation is Guaranı́, a language with two nominal temporality markers. Based on data collected during fieldwork in Paraguay, I explore the morphosyntax, lexical restrictions, meaning and use of these markers, which, to the best of my knowledge, is the first detailed study of such markers. I develop a semantic analysis of the markers as grammatical aspect and modality markers, and show that they do not behave like tenses. The discussion of the Guaranı́ nominal temporality markers is couched in a larger study of the grammar of noun phrases and verbal temporality of Guaranı́. One result of this study is that Guaranı́ is a (verbally) tenseless language. I compare the temporal interpretation of noun phrases in English and Guaranı́ and suggest that it is determined by the same constraint in the two languages. I identify two areas of crosslinguistic variation in the temporal semantics of noun phrases: the morphosyntactic realization of the semantic categories grammatical aspect, modality, and existence and
A Note on the Convexity of Ruin Probabilities

Conditions for the convexity of compound geometric tails and compound geometric convolution tails are established. The results are then applied to analyze the convexity of the ruin probability and the Laplace transform of the time to ruin in the classical compound Poisson risk model with and without diffusion. An application to an optimization problem is given.
Directional representation of data in Linear Discriminant Analysis

Abstract Sometimes feature representations of measured individuals are better described by spherical coordinates than Cartesian ones. The author proposes to introduce a preprocessing step in LDA based on the arctangent transformation of spherical coordinates. This nonlinear transformation does not change the dimension of the data, but in combination with LDA it leads to a dimension reduction if the raw data are not linearly separated. The method is presented using various examples of real and artificial data.
Phylogenetic Diversity of Some Snappers (Lutjanidae: Perciformes) Inferred from Mitochondrial 16S rRNA Sequences

Department of Basic Sciences, Deanship of Preparatory Year and Supporting Studies, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 34212, Saudi Arabia Zoology Department, Faculty of Science, Port Said University, Port Said, Egypt Biology Department Faculty of Education, Zintan University, Libya. Zoology Department, Faculty of Science, South Valley University, Egypt Corresponding Author: ali_zoology_2010@yahoo.com
The index of increase in the presence of measurement errors and the inevitability of striking a balance between determinism and randomness

We introduce a modification of the index of increase that works in both deterministic and random environments, and thus allows us to assess monotonicity of functions that are prone to random measurement errors. We prove consistency of the empirical index and show how its rate of convergence is influenced by deterministic and random parts of the data. In particular, the obtained results allow us to determine the frequency at which observations should be taken in order to reach any pre-specified level of estimation precision. We illustrate the performance of the suggested estimator using simulated data arising from purely deterministic and error-contaminated monotonic and non-monotonic functions.
Performative Surfaces: Generating complex geometries using planar flow patterns

This research explains the development process of a design tool that can construct complex surface geometries using only two-dimensional plan drawings. The intention behind this tool is to address certain complex behavior of surface geometries such as hydrological characteristics. This paper briefly explains the historic and mathematic description of surface data structures, according to Cayley, Maxwell and Morse. This is followed by a brief introduction of the surface network/critical graph extraction technique in GIS. Additionally, the algorithm of contour extraction from asimple critical graph to reconstruct a surface is explained. In the final section the lessons learnedfrom the previous sections are used to develop algorithms for a tool which uses only plan drawings to construct complex surfaces. Three algorithms are explained in the final section among which the third one is considered to be the most complete and promising approach. Therefore,some design examples are presented to show the flexibility of the tool. At the end, this paper provides suggestions and discussions to reflect further ideas in order to improve the tool in future.
Tracking of piezoelectric actuators with hysteresis: A nonlinear robust output regulation approach

Hysteretic characteristics commonly exist in piezoelectric actuators (PEAs) and degrade the positioning accuracy particularly in the case of low‐frequency trajectory tracking. A PEA with hysteretic characteristics is usually difficult to precisely control because the unmeasurable hysteretic force is typically generated by a complicated nonlinear dynamic model. This task can be theoretically formulated as a robust output regulation problem with a specific nonlinear and non‐autonomous exosystem. In this paper, the theoretical problem is first solved within a novel internal model architecture. With the proposed controller, the PEA is able to asymptotically track a desired reference trajectory with the robustness to plant uncertainties. The effectiveness of the design is verified by extensive experiments. Copyright © 2016 John Wiley & Sons, Ltd.
Improving the Efficiency of Management of Large International Companies for the Development of Financial and Economic Cooperation Between Countries, Given Migration

Purpose: The aim of this study is to analyze the relationship between the development of large international companies and migration. An equally important task is to improve the direction of financial and economic cooperation between exporting countries and countries receiving migrants. Theoretical framework: The process of globalization caused by the accelerated development of production and technology is chaotic. At the same time, migration processes can create economic conditions aimed at improving socioeconomic, cultural, and political development in countries. Methodology: The study uses general scientific and special research methods, namely the method of dialectical cognition, the method of induction and deduction, the method of scientific abstraction, the method of system analysis, the index system and evaluation method, the causal method, and the comparative method. Findings: The article proves that the financial and economic interests of countries should be taken into account when cooperating with migration and other international policies. This direction of development is ensured by increasing the efficiency of the management of large international companies and improving the mechanisms of financing international migration processes. At present, the efficiency of management of large international companies is enhanced by creating a trilateral mutually beneficial situation when the immigration process has a positive impact on the country of origin, the country of destination, and the migrant. Practical & Social implications: The positive impact of immigration is that immigrants use their rights in the host country to find work, develop skills and earn money, some of which they can transfer to their country of origin. The advantage of the destination country is that it can attract workers from unpopular countries who find jobs there. Originality: The article proves that the positive effect is ensured by an increase in remittances and is seen as a new source of additional financing for economic development. Through remittances, migrants make a direct contribution to reducing poverty in their country of origin. In addition, the positive impact is also reflected in social communication, which is manifested in the flow of information, ideas, values.
Shared gamma frailty models based on reversed hazard rate for modeling Australian twin data

ABSTRACT In this paper, we consider shared gamma frailty model with the reversed hazard rate (RHR) with two different baseline distributions, namely the generalized inverse Rayleigh and the exponentiated Gumbel distributions. With these two baseline distributions we propose two different shared frailty models. We develop the Bayesian estimation procedure using Markov Chain Monte Carlo technique to estimate the parameters involved in these models. We present a simulation study to compare the true values of the parameters with the estimated values. A search of the literature suggests that currently no work has been done for these two baseline distributions with a shared gamma frailty with the RHR so far. We also apply these two models by using a real life bivariate survival data set of Australian twin data given by Duffy et a1. (1990) and a better model is suggested for the data.
Image Appeal Revisited: Analysis, New Dataset, and Prediction Models

There are more and more photographic images uploaded to social media platforms such as Instagram, Flickr, or Facebook on a daily basis. At the same time, attention and consumption for such images is high, with image views and liking as one of the success factors for users and driving forces for social media algorithms. Here, “liking” can be assumed to be driven by image appeal and further factors such as who is posting the images and what they may show and reveal about the posting person. It is therefore of high research interest to evaluate the appeal of such images in the context of social media platforms. Such an appeal evaluation may help to improve image quality or could be used as an additional filter criterion to select good images. To analyze image appeal, various datasets have been established over the past years. However, not all datasets contain high-resolution images, are up to date, or include additional data, such as meta-data or social-media-type data such as likes and views. We created our own dataset “AVT-ImageAppeal-Dataset”, which includes images from different photo-sharing platforms. The dataset also includes a subset of other state-of-the-art datasets and is extended by social-media-type data, meta-data, and additional images. In this paper, we describe the dataset and a series of laboratory- and crowd-tests we conducted to evaluate image appeal. These tests indicate that there is only a small influence when likes and views are included in the presentation of the images in comparison to when these are not shown, and also the appeal ratings are only a little correlated to likes and views. Furthermore, it is shown that lab and crowd tests are highly similar considering the collected appeal ratings. In addition to the dataset, we also describe various machine learning models for the prediction of image appeal, using only the photo itself as input. The models have a similar or slightly better performance than state-of-the-art models. The evaluation indicates that there is still an improvement in image appeal prediction and furthermore, other aspects, such as the presentation context could be evaluated.
The Reality of Applying Educational Electronic Games from Elementary School Teachers’ Viewpoint

The study aimed to identify the reality of the employment of educational electronic games from the point of view of elementary school teachers in the Kingdom of Saudi Arabia. The researchers used the descriptive approach; a questionnaire was used to collect the data needed for the research after verifying its validity and reliability. The study population consisted of 649 elementary school teachers in Al-Khobar. The study results concluded that most teachers agreed on employing educational electronic games to a large extent. The results also revealed that female teachers face obstacles to the employment of educational electronic games to a moderate degree. In addition, there were statistically significant differences in the degree of employing educational electronic games in the educational process according to the experience variable for the least experience; however, it did not affect the obstacles to the employment of educational electronic games in the educational process. Besides, there were statistically significant differences in the degree of employing educational electronic games in the educational process according to the qualification variable and came in favor of masters; nevertheless, it did not affect the responses to the obstacles to employing educational electronic games in the educational process. Finally, no statistically significant differences existed in the degree of the employment of educational electronic games in the educational process and their obstacles attributed to the educational stage. In light of the study results, the researchers recommend holding training courses and workshops to educate elementary school teachers about activating educational electronic games in education. Also, female teachers should be encouraged to use educational electronic games, and the administrative work entrusted to them must be reduced. Besides, the school's infrastructure must be improved by providing quick internet services and adequate computers. Finally, students must be redistributed to the classrooms in proportion to the school's capabilities
Linear and Nonlinear Waves

to be done in this area. Face recognition is a problem that scarcely clamoured for attention before the computer age but, having surfaced, has involved a wide range of techniques and has attracted the attention of some fine minds (David Mumford was a Fields Medallist in 1974). This singular application of mathematical modelling to a messy applied problem of obvious utility and importance but with no unique solution is a pretty one to share with students: perhaps, returning to the source of our opening quotation, we may invert Duncan's earlier observation, 'There is an art to find the mind's construction in the face! '.