bluuebunny/crossref_metadata_2025_split huggingface dataset:
A calibrated synthetic estimator for small area estimation
Authors: Iseh Matthew Joshua , Enang Ekaette Inyang 
Published: September 2021

Abstract
Synthetic estimators are known to produce estimates of population mean in areas where no sampled data are available, but such estimates are usually highly biased with invalid confidence statements. This paper presents a calibrated synthetic estimator of the population mean which addresses these problematic issues. Two known special cases of this estimator were obtained in the form of combined ratio and combined regression synthetic estimators, using selected tuning parameters under stratified sampling. In result, their biases and variance estimators were derived. The empirical demonstration of the usage involving the proposed calibrated estimators shows that they provide better estimates of the population mean than the existing estimators discussed in this study. In particular, the estimators were examined through simulation under three distributional assumptions, namely the normal, gamma and exponential distributions. The results show that they provide estimates of the mean displaying less relative bias and greater efficiency. Moreover, they prove more consistent than the existing classical synthetic estimator. The further evaluation carried out using the coefficient of variation provides additional confirmation of the calibrated estimator’s advantage over the existing ones in relation to small area estimation.
The Complex-Number Mortality Model (CNMM) based on orthonormal expansion of membership functions
Authors: Szymański Andrzej , Rossa Agnieszka 
Published: September 2021

AbstractThe paper deals with a new fuzzy version of the Lee-Carter (LC) mortality model, in which mortality rates as well as parameters of the LC model are treated as triangular fuzzy numbers. As a starting point, the fuzzy Koissi-Shapiro (KS) approach is recalled. Based on this approach, a new fuzzy mortality model – CNMM – is formulated using orthonormal expansions of the inverse exponential membership functions of the model components. The paper includes numerical findings based on a case study with the use of the new mortality model compared to the results obtained with the standard LC model.
Bayesian estimation and prediction based on Rayleigh record data with applications
Authors: Abu Awwad Raed R. , Bdair Omar M. , Abufoudeh Ghassan K. 
Published: September 2021

Abstract
Based on a record sample from the Rayleigh model, we consider the problem of estimating the scale and location parameters of the model and predicting the future unobserved record data. Maximum likelihood and Bayesian approaches under different loss functions are used to estimate the model’s parameters. The Gibbs sampler and Metropolis-Hastings methods are used within the Bayesian procedures to draw the Markov Chain Monte Carlo (MCMC) samples, used in turn to compute the Bayes estimator and the point predictors of the future record data. Monte Carlo simulations are performed to study the behaviour and to compare methods obtained in this way. Two examples of real data have been analyzed to illustrate the procedures developed here.
Trade potential under the SAFTA between India and other SAARC countries: the augmented gravity model approach
Authors: Sharma Vipin , Kumar Vinod 
Published: September 2021

Abstract
The study attempts to analyse India’s trade potential with other SAARC member states under the SAFTA agreement by means of the augmented gravity model, at annual frequency from 1992 to 2019 in general and from 2004 to 2019 in particular. The findings of this paper prove that the intra-regional trade volumes between SAARC countries can be increased and encouraged. Moreover, the research shows that it is important to introduce structural reforms aiming to boost trade with non-member states. It would be advisable for researchers to take into account the effect locational and infrastructural advantages have on transport costs through the application of a gravity model. Previous research has also demonstrated that the augmented gravity model may prove helpful in explaining some key features of South Asian trade, which traditional gravity models fail to do.
An application of persistent homology and the graph theory to linguistics: The case of Tifinagh and Phoenician scripts
Authors: Bouazzaoui Hajar , Elomary Mohamed Abdou , Mamouni My Ismail 
Published: September 2021

AbstractAs the origin of the Tifinagh script remains uncertain, this work aims at exploring its probable relatedness with the Phoenician script. Using tools from within topological data analysis and graph theory, the similarity between the two scripts is studied. The clustering of their letter shapes is performed based on the pairwise distances between their topological signatures. The ideas presented in this work can be extended to study the similarity between any two writing systems and as such can serve as the first step for linguists to determine the possibly related scripts before conducting further analysis.
A new count data model applied in the analysis of vaccine adverse events and insurance claims
Authors: Dar Showkat Ahmad , Hassan Anwar , Ahmad Peer Bilal , Wani Sameer Ahmad 
Published: September 2021

Abstract
The article presents a new probability distribution, created by compounding the Poisson distribution with the weighted exponential distribution. Important mathematical and statistical properties of the distribution have been derived and discussed. The paper describes the proposed model’s parameter estimation, performed by means of the maximum likelihood method. Finally, real data sets are analyzed to verify the suitability of the proposed distribution in modeling count data sets representing vaccine adverse events and insurance claims.
Modelling the occupational and educational choices of young people in Poland using Bayesian multinomial logit models
Authors: Grzenda Wioletta 
Published: September 2021

AbstractBinomial logit models are commonly used in the analysis of the situation of respondents on the labour market. Consequently, in most cases researchers consider two states: of being unemployed and employed or economically inactive and active. This paper focuses on the situation of young people aged 18 to 29 on the labour market in Poland. A major part of the people who comprise the studied group are still in education or combine education with work. Therefore, the participants of the research were divided into the following groups: the employed and not learning, those combining education with work, the unemployed, learners/students only, and those economically inactive and not at school. The model allowing an analysis which includes both the most common division into working and nonworking persons as well as the division proposed in this study is a nested logit model. This model has a hierarchical structure and is a special case of a multinomial logit model. In this paper, all models were estimated within the Bayesian approach. The findings show that continuing education by young people may result from their problems with finding a job; moreover, combining work with education is not the preferred form of professional activity. In addition, the study examines the inequalities observed on the Polish labour market.
On the improvement of paired ranked set sampling to estimate population mean
Authors: Rehman Syed Abdul , Shabbir Javid 
Published: September 2021

Abstract
In ecological and environmental sampling the quantification of units is either difficult or overly demanding in terms of the time, money, workload, it requires. For this reason efficient and cost-effective sampling methods need to be devised for data collecting. The most commonly used method for this purpose is the Ranked Set Sampling (RSS). In this paper, a sampling scheme called Improved Paired Ranked Set Sampling (IPRSS) is proposed to estimate the population mean. The performance of the proposed IPRSS is evaluated under perfect and imperfect rankings. A simulation study based on selected hypothetical distributions and a real-life data set showed that IPRSS is more precise than RSS, Paired RSS (PRSS) or Extreme RSS (ERSS).
Misi Ekologis: Memaknai Ulang Misi Gereja Kristen Muria Indonesia di Tengah Bencana Alam dan Krisis Ekologi
Authors: Purwanto Heri 
Published: September 2021

AbstractThe mission will always change. This change occurs because of a shift in the mission paradigm in line with the context. The mission is not anymore understood and defined in a traditional, exclusive, and singular way, otherwise the mission needs to be modified to be more open, inclusive, and have multiple meanings. In fact, the mission will always follow its context and locality. The mission of the ecological vocation of the church is needed by the world amid the global ecological crisis and various natural disasters that occured at this time. One of factors that causes ecology crises and natural disasters is natural damaged. It is caused by human who does exploitation to the nature massively. Theologically, the church is called to work on God’s kingdom mission as a work of salvation for the world. The mission of salvation is not only for humans but also for whole of creation as a universal union with God. In implementing this ecological mission, Gereja Kristen Muria Indonesia through the Mennonite Diakonia Service (MDS) have participated in carrying out various forms of the church’s mission, including ecological, as a church integral mission to overcome crisis and natural disasters in Indonesia.
AbstrakMisi akan selalu mengalami perubahan. Perubahan ini terjadi karena adanya pergeseran paradigma misi seiring dengan konteksnya. Misi tidak lagi dipahami dan didefinisikan secara tradisional, eksklusif, dan tunggal. Sebaliknya, misi perlu dimodifikasi agar lebih terbuka, inklusif, dan memiliki banyak arti. Faktanya, misi itu akan selalu mengikuti konteks dan lokalitasnya. Misi panggilan ekologi gereja sangat dibutuhkan oleh dunia di tengah krisis ekologi global dan beragam bencana alam yang terjadi saat ini. Salah satu faktor yang menyebabkan krisis ekologi dan bencana alam adalah kerusakan alam yang terjadi berbagai tempat. Ini disebabkan oleh manusia yang melakukan eksploitasi terhadap alam secara besar-besaran. Secara teologis, gereja dipanggil untuk mengerjakan misi kerajaan Allah sebagai karya keselamatan bagi dunia. Maka, misi keselamatan itu bukan hanya bagi manusia tetapi juga bagi seluruh ciptaan sebagai kesatuan universal dengan Tuhan. Dalam menjalankan misi ekologis, Gereja Kristen Muria Indonesia melalui Mennonite Diakonia Service (MDS) turut serta menjalankan berbagai bentuk misi gereja, termasuk ekologis, sebagai misi integral gereja untuk mengatasi krisis ekologi dan bencana alam di Indonesia.
Design thinking como herramienta para prevenir la violencia basada en género en estudiantes universitarios
Authors: Zambrano Guerrero Christian Alexander , Rodríguez Pabón Diana Milena 
Published: September 2021

La violencia basada en género (VBG) es un problema de salud pública que produce daño físico, sexual o psicológico, fijado en la pertenencia al género bien sea masculino o femenino en diferentes contextos, entre ellos el educativo. Concretamente, las universidades están llamadas a trascender las estadísticas de VBG hacia un reconocimiento de las prácticas cotidianas que la comunidad universitaria asume ante esta problemática, a fin de generar estrategias efectivas. Por lo anterior, la presente investigación tiene como objetivo evaluar el uso de las herramientas de Design Thinking (DT) para la prevención de la VBG en el contexto universitario, a partir de una investigación cualitativa con enfoque de investigación acción (IA), aplicando en el transcurso del proyecto las fases expuestas en el DT mediante el desarrollo de variadas técnicas e instrumentos. Se trabajó con un grupo de doce estudiantes de diferentes facultades de una universidad de San Juan de Pasto (Colombia), por medio de un curso-taller liderado por los investigadores. Así, la investigación permitió involucrar a los estudiantes en la comprensión inicial de la VBG dentro del contexto universitario, mediante una toma de conciencia de los tipos de violencia, las diferentes formas como se violenta y la importancia de generar propuestas de prevención de la VBG. A manera de conclusión, se puede inferir la presencia de VBG está naturalizada e invisibilizada, limitadas investigaciones sobre VBG y escasas propuestas de prevención de esta problemática en contextos universitarios. Esto pone de manifiesto la relevancia de fortalecer propuestas para prevenir la VBG a partir de herramientas innovadoras como el DT.
The Culture of the Motillas in La Mancha - witness to the 4.2 ka cal BP Climate Event
Authors: Mejías Moreno Miguel , Benítez de Lugo Enrich Luis , López-Sáez José Antonio , Lillios Katina T. 
Published: September 2021

Recent investigations indicate that the culture of the “motillas” – the Bronze Age settlements of La Mancha – may be the oldest evidence for large-scale water management in Europe. The archaeological and paleo-environmental data suggest a close relationship between the location of the “motillas” and the geological landscape. “Motillas” were built during the 4.2 ka cal BP climate event, at a time of environmental stress. The construction of wells that reached the local water table to access groundwater was a successful solution that lasted almost a millennium and was an important technological development that shaped the emergence of more complex and hierarchical societies in the region. The Holocene is a dynamic geological period in terms of climatic fluctuations. One of the most important of these dynamics, with global impact, is the aforementioned 4.2 ka cal BP climate event, which has been related to the collapse of diverse civilizations around the world. This event, in the Iberian Peninsula, occurred at the transition between the Copper Age and Bronze Age in La Mancha (as well as in other regions of the Peninsula). It was characterized by marked aridity, with a more intense phase, between 2,000 and 1,800 cal BC, during which there was a decrease in rainfall and an increase in temperature. The Bronze Age culture of the “motillas” of La Mancha constitutes a unique adaptation of the inhabitants of the territory to this climatic situation.
A Review on Recent Developments in the Anticancer Potential of Oleanolic
Acid and its Analogs (2017-2020)
Authors: Gupta Nidhi 
Published: September 2021

Abstract:
Oleanolic acid (OA) is a pentacyclic triterpenoid class of natural products that possess a
broad range of biological activities, specifically anticancer activities. Considering the anticancer potential
of OA, a large number of analogs have been prepared by several researchers through modifications
at C-3, C-12, and C-28 -COOH to develop potent anticancer agents with improved cytotoxicity
and pharmaceutical properties. Some of the synthesized derivatives have been assessed in clinical trials
also. This review summarizes the most recent synthetic and biological efforts in the development
of oleanolic acid and its analogs during the period from 2017 to 2020. Reports published during this
period revealed that both OA and its analogs possess a remarkable potential for the development of
effective anticancer agents along with several others, such as anti-inflammatory, anti-viral, antimicrobial,
and anti-diabetic agents.
Characterization of Glyoxal Modified LDL: Role in the Generation of Circulating Autoantibodies in Type 2 Diabetes Mellitus and Coronary Artery Disease
Authors: Rizwee Md Masum , Abidi Minhal , Habib Safia , Mir Abdul Rouf , Ali Asif , Uddin Moin 
Published: September 2021

Aims:
This study aims to investigate the role of glyoxal modified LDL in the immunopathology
of diabetes and cardiovascular disease.

Background:
Glycoxidation of proteins is widely studied in relation to diabetes and cardiovascular
disease.

Objective:
This study probed the glyoxal mediated modifications in LDL, analyzed the immunogenicity
of the glycated LDL and ascertained the presence of circulating antibodies against modified
LDL in patients with type 2 diabetes mellitus (T2DM), coronary artery disease (CAD) and patients
with both (T2DM+CAD).

Methods:
Glyoxal mediated modifications in LDL were studied by multiple spectroscopic techniques,
high-performance liquid chromatography and electron microscopy. Immunization studies
were carried in New Zealand rabbits. The presence of antibodies against glyoxal modified LDL in
immunized rabbits and human subjects was analyzed by ELISA.

Results:
Glyoxal altered the structural integrity of LDL and led to the formation of AGEs. It decreased
the alpha-helix content of LDL; increased β sheet formation, increased carbonyl content and
decreased free lysine and arginine content. Modified LDL showed aggregation, generation of of Nε-
(Carboxymethyl) lysine and the formation of amorphous type aggregates. It exhibited high antigenicity
and generated a specific immune response that shared common antigenic determinants with
other glycated proteins. Direct binding data showed the presence of anti-glyoxal modified LDL antibodies
in patients with T2DM, CAD and patients with both T2DM and CAD. Further analysis in
competitive binding assay revealed specific binding characteristics of auto-antibodies. Sera from
patients with T2DM+CAD exhibited the highest binding with glyoxal modified LDL.

Conclusion:
Glyoxal-modified LDL has neo-antigenic determinants that cause the generation of
circulating antibodies in diabetes and coronary artery disease. The study might have potential
relevance in biomarker development.
Digital Media Animation Control Technology Based on Maya
Authors: Cui Qiang , Sharma Anil 
Published: September 2021

Background:
A deep understanding of digital media art is required to promote the development
of animation design.

Methods:
The functions and application effects of animation design were analyzed in detail to improve
its quality. In this study, we used Maya embedded language (MEL) to simulate and analyze
the walking, running, and jumping effects of animated characters.

Results:
The results showed that the use of digital media animation control technology based on
MEL to realize animation character movement effect could improve production efficiency and character
motion authenticity by 30% and 40%, respectively, and reduce work intensity by 50%. We
used MEL to resolve the production problems of three-dimensional (3D) animation.

Conclusion:
Applying the law of motion to characters makes their movement highly realistic. The
production of 3D animation is simple, efficient, recyclable, and highly operable.
Do the acute lymphoblastic leukemia and non-hodgkin lymphoma patients have a worse prognosis of COVID-19 infection in children?: a case report
Authors: Ridha Nadirah Rasyid , Fikri Bahrul , Rahimi Rahmawaty , Laompo Amiruddin , Tanjung Conny , Daud Dasril , Massi Nasrum 
Published: September 2021

Background: Coronavirus Disease 2019 (COVID-19) is a contagious disease caused by a new type of Coronavirus namely Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Children with tumors or autoimmune diseases are more susceptible, because of suppression of their immune system, chemotherapy, radiotherapy, or surgery on tumors.
Case presentation: We present the clinical features 3 Acute Lymphoblastic leukemia and 1 Non-Hodgkin lymphoma patients who were infected with COVID-19 since July to August 2020 in our hospital. These were the first four cases identified as COVID-19 positive in Dr Wahidin Sudirohusodo Hospital. Case 1, 2, and 4 were diagnosed as moderate and common type of COVID-19, while case 3 was classified as severe type. They may be transmitted COVID-19 infection during hospitalization. All cases were recovered from COVID-19 after a combination therapy against virus, bacteria, and also respiratory support.
Conclusion: Our case series of four pediatric cancer patients showed a good outcome after prompt treatment, suggesting that malignancy in children may not be a contributor factor for COVID-19 recovery.
Keywords: COVID-19; acute lymphoblastic leukemia; non-hodgkin lymphoma; children

Abstrak
Latar belakang: Covid-19 (Coronavirus disease 2019) adalah penyakit menular yang disebabkan oleh Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Anak yang menderita kanker atau penyakit autoimun lebih rentan tertular karena penurunan system kekebalan tubuh, dampak kemoterapi, radioterapi, atau operasi tumor.
Penyajian kasus: Kami melaporkan 3 pasien leukemia limfoblastik akut dan 1 pasien limfoma non-Hodgkin yang terinfeksi Covid-19 sejak Juli-Agustus 2020. Kasus tersebut adalah 4 kasus pertama yang teridentifikasi Covid-19 di Rumah Sakit Dr. Wahidin Sudirohusodo. Kasus 1,2, dan 4 terdiagnosis positif Covid -19 derajat sedang, sedangkan kasus 3 tergolong berat. Mereka kemungkinan terinfeksi Covid-19 saat perawatan. Semua kasus dinyatakan sembuh dari Covid-19 setelah pemberian obat anti virus, antibiotik, dan alat bantu pernapasan.
Kesimpulan: Serial kasus dari 4 pasien kanker anak dengan outcome yang baik setelah pengobatan yang cepat mengindikasikan bahwa penyakit keganasan pada anak kemungkinan bukan faktor yang berkontribusi dalam kesembuhan Covid-19.
Kata kunci: COVID-19; leukemia limfoblastik akut; limfoma non-hodgkin; anak
Regional differentials in early antenatal care, health facility delivery and early postnatal care among women in Uganda
Authors: Atuhaire Ruth , Wamala Robert , Atuhaire Leonard. K. , Nansubuga Elizabeth 
Published: September 2021

This study aimed at examining regional differentials in maternal healthcare services in Uganda. Using a sample of 1,521 women of reproductive ages (15-49) from Eastern and Western sub-regions of Uganda, and non-linear Oaxaca’ Blinder Multivariate Decomposition method, we assessed differentials in utilization of early antenatal care, health facility delivery and early postnatal care services among the women, henceforth, establishing main predictors of regional inequalities that will enable policymakers to make better evenly interventions and focused decisions. The study reveals that differentials in the utilization of maternal healthcare services are not only hindered by social and economic barriers, but also widespread disparities in the utilization of existing services. Significant differentials were attributed to both variation in women’s characteristics and effects of coefficients. Findings showed that the gap in early antenatal care would reduce on average by 31.6% and 34.7% of differences in availability of community health workers and media exposure respectively, were to disappear. Furthermore, the gap would increase on average by 68.8% and 12.6% in absence of the variation in effects of maternal education, and wealth respectively. The gap in health facility delivery would reduce on average by 24.6% and 37.2% of differences in community health worker availability and media exposure were to disappear respectively and increase on average by 54.9% in the absence of variations in effects of maternal education. The gap in EPNC would reduce on average by 18.5% and 17.17% of differences in maternal education and community health worker availability were to disappear respectively and increase on average by 52.8% and 8.4% in the absence of the variation in effects of maternal education and wealth respectively. Progress towards equitable maternal health care should focus more on strategies that guarantee even distribution of community health workers, broad dissemination of maternal healthcare information and girl child education completion in Uganda.