bluuebunny/crossref_metadata_2025 huggingface dataset:
Documentary Review about Computer Programming for the Development of Computer Thinking, Logical-Mathematical Skills, and Scientific Skills
Authors: Hillon-Salgado Daniel F. , Gómez Fierro Wilmer A. , Molina-Mosquera Johan J.
Published: May 2022

Programming in school spaces has been essential because the main objectives are the training and development of skills of those who use it. This way, it contributes to the student’s activity from the professional field and in practical life. Therefore, in this article, a documentary review is carried out to inquire about the implementation of programming in school to contribute to the development of computational thinking, logical-mathematical, and scientific skills. The examination revealed essential research findings that consider programming an indispensable tool for the axes proposed in this work.

 

Received: 21 January 2022 / Accepted: 2 April 2022 / Published: 5 May 2022
The Effect of Environmental Performance on Firm Value with Mediating Role of Financial Performance in Manufacturing Companies in Indonesia
Authors: Fauzi Teddy Hikmat
Published: May 2022

The purpose of this study is to investigate the determinants of firm value by formulating the relationship between environmental performance and the intervening variable of financial performance. This study analyzes how public companies in Indonesia comply with environmental responsibility and use it as a basis for increasing corporate value. Using the sampling of purposive sampling method, the research was conducted by examining 64 basic industries and mining companies listed on the Indonesia Stock Exchange during 2016-2018. Empirical testing is done by path analysis. The results of the study suggest that firms are more likely to be able to increase the utility of environmental performance by mediating effects of financial performance. This means that the environmental performance effect is more likely in firms that have superior financial performance. Practically speaking, the results have implications that the implementation of environmental responsibility supported by adequate financial resources can significantly affect the perception of sustainability by company stakeholders and ultimately increase firm value.

 

Received: 20 September 2021 / Accepted: 8 April 2022 / Published: 5 May 2022
Analysis of "Hierarchy of Needs" as a Strategy to Enhance Academics Retention in South African Universities
Authors: Omodan Bunmi Isaiah
Published: May 2022

A high attrition rate exists among South African higher education institutions, which poses a significant challenge to university productivity as an academic enterprise. The attrition/turnover seems disruptive and costly, and some of the disruptive implications are poor productivity, lack of motivation and poor morale to work, including skill drain. This theoretical paper presents Abraham Maslow's hierarchy of needs theory and its assumptions as a possible motivation that is needed to enhance academic staff retention in the university system. This study was designed using conceptual analysis within the principle interpretive paradigm, enabling the researcher to adequately engage critically in interpreting Maslow's hierarchy of needs and its assumptions as an alternative strategy that could enhance academic staff retention in the university system. The study argued that the five hierarchies of needs (physiological needs, safety/security needs, love and belongingness, esteem needs, and self-actualisation needs), as propounded by Abraham Maslow, are essential in ensuring academic staff retention in the system. The study concludes that total rewards in the form of basic needs, environmental safety and job security, creation of affectionate work-environment, the need for recognition and self-actualisation are the dimensions of academic staff retention in the university system.

 

Received: 11 January 2022 / Accepted: 4 April 2022 / Published: 5 May 2022
Modeling with Differential Equations and Geogebra in High School Mathematics Education
Authors: Latifi Mohamed , Eseghir Abdelhak , Elmaroufi Abdelouahed , Hattaf Khalid , Achtaich Naceur
Published: May 2022

The integration of technology in mathematics education is still much slower despite the benefits of using technology. Dynamic Geometry Computer Software (DGCS), like GeoGebra, makes mathematical modeling alive and more attractive. They allow dynamic graphical representations and support an in-depth understanding of abstract mathematical concepts. From this perspective, the purpose of this study is to design activities (which include the use of mathematical software Geogebra), where the students manipulate, observe, analyse, and generalize mathematical concepts. With GeoGebra, solving more interesting and difficult problems will evidently be more feasible for students. To evaluate the contribution of GeoGebra in the learning of mathematical modeling, we carried out an experimental study in two groups for the 12th grade students. Experimental group (using GeoGebra) and control group (not using GeoGebra). The intervention lasted five weeks on the subject of differential equations. Based on the results, students in the experimental group achieved higher scores on the Mathematical Modeling Skills Rating Scale.

 

Received: 20 February 2022 / Accepted: 16 April 2022 / Published: 5 May 2022
Factors Influencing Career Choice Among Social Work Graduates
Authors: Zheng Guanghuai , Bui Tuan Dinh , Hoang Hai The , Nguyen Phuong Thi Hang , Tran-Chi Vinh-Long
Published: May 2022

In recent years, career decision-making has attracted research attention, especially choosing careers among graduates. Making informed and appropriate career choices are positively related to work performance and career success. The present study investigates the factors influencing career choice among social work graduates. A sample of 417 social work graduates was recruited to complete the survey. Descriptive analysis, Pearson correlation, and multiple linear regression were used to analyze the data. Our results show that there is a positive correlation between environmental, interpersonal, institutional, external, internal factors and career choice. Additionally, multiple regression analysis indicates that external and internal factors influence career choice among graduates. The present findings contribute to the general discussion about the influential factors in graduates' career choices. University administrators must develop career guidance and counseling programs more broadly in universities to support graduates in making appropriate career choices.

 

Received: 27 December 2021 / Accepted: 31 March 2022 / Published: 5 May 2022
Transformative Pedagogy as a Decolonised Teaching Philosophy
Authors: Omodan Bunmi Isaiah
Published: May 2022

Observations and experiences confirm that most university instructors and lecturers have migrated from traditional teaching, but many teaching styles are not transformative. That is, university classrooms are still within "teach and go" without concerted consideration to the future products of classroom stakeholders. This study examined transformative pedagogy as a teaching philosophy that increases critical epistemology towards students' transformation. This theoretical paper adopted the theory of decoloniality, located within transformative world view and designed with conceptual analysis as a means to interpret the assumptions of transformation in the university classroom. The study argued that collaborative knowledge construction enhances professional trust between the lecturer and the students, encouraging freedom that could be regarded as social and academic support for students towards transformation. Therefore, the study concludes that transformative pedagogy laced with humanity, collectivism, grouping, and unity of purpose in generating knowledge is a decolonised teaching philosophy. The study, therefore, recommends that collaborative knowledge construction, professional trust and relationships, freedom within the classroom, social and academic support for students are dimensions of transformative pedagogy, therefore, should be practised by university lecturers and/or instructors.

 

Received: 4 January 2022 / Accepted: 5 March 2022 / Published: 5 May 2022
Work Stress Mediates Motivation and Discipline on Teacher Performance: Evidence Work from Home Policy
Authors: Fahmi Pakri , Sudjono . , Parwoto . , Supriyatno . , Saluy Ahmad Badawi , Safitri Era , Effiyaldi . , Rivaldo Yandra , Endri Endri
Published: May 2022

This study aims to determine the implications of the Work From Home (WFH) policy on work motivation and work discipline on teacher performance with work stress intervention. While the approach that is used in this study, it is a quantitative descriptive approach. A total of 63 respondents is used as data in this study, they are employees of SMKN 9 Bekasi. The alternative method of the Structural Equation Model (SEM) is used to analyze this research, it is Partial Least Square (PLS). Testing the validity of each variable with its reliability is what is done in the first stage. Furthermore, testing the Implications of WFH policy on work motivation and work discipline on teacher performance with work stress Intervention is something that is done in the second stage. The positive and significant effect is shown by the work motivation variable from the results of this study on performance, as well as work discipline, it also shows a positive and significant effect on performance. Then, the negative effect is shown by the motivation to work stress and also work discipline to work stress, this also shows a negative and significant effect. And the last is the relationship between job stress and performance. This shows a positive and significant effect on performance.

 

Received: 20 January 2022 / Accepted: 4 April 2022 / Published: 5 May 2022
Strategies to Confront the Marital Adjustment Disturbance as Practiced by Saudi Wives
Authors: Al-Khanini Mona bint AbdulAziz
Published: May 2022

The study aimed to explore the strategies practiced by Saudi wives to confront the marital adjustment disturbance. The study applied a three-part questionnaire that includes the degree of the marital adjustment disturbance, its causes, ramifications and strategies to confront it. Using the personal interview, data were collected from 230 wives in Riyadh city within three months. The study used the descriptive and analytical approach to analyze the collected data. The results indicated that there was a high degree of disturbance in the relationship between the couples. This is because of the weakness of positive emotional expressions by the husband, which the most common effects are silence and marital silence, and its effect on the psychology and behavior of the children. The most common strategy by the wife was the strategy of positive thinking. The study recommended the following: Providing guidance and training programs by family-related organizations, training the wives to practice the positive strategies to confront family disturbances, as well as training the husbands on techniques of correct marital treatment.

 

Received: 9 March 2022 / Accepted: 16 April 2022 / Published: 5 May 2022
Panoramas of Regulating the Right to Reproductive Health: A Remedy to Socio-Economic Challenges in South Africa
Authors: Masilo Matsheta Reginald
Published: May 2022

Like many other countries, South Africa has over the years recorded an expeditious population growth, statistically, during this era, socio-economic stability diminished, which led to a regression in human wellbeing development. The latter ensued due to the decline in the adequate incursion to basic services, such as quality health care, education, safe cleaning water, and housing. Amongst others, uncontrolled population growth exacerbated the already dire socio-economic challenges the country is faced with. This paper aims to demonstrate that unregulated population growth hinders the progress of socio-economic development, admonishes societal stability, and in general, sabotages the survival of humanity. Therefore, this paper indicts the possibility of enacting legal instruments that will control the population in a form of regulating or limiting the right to reproductive health as captured or envisaged in the Constitution of the Republic of South Africa. It is therefore submitted that the South African government must implore or consider drafting policies and legislations that aim at aligning the state resources and the population. Finally, the excursion of this paper will highlight challenges that prosper as a result of population growth within the area of education, poverty, unemployment, and social security.

 

Received: 2 September 2021 / Accepted: 3 March 2022 / Published: 5 May 2022
Preparedness of Deaf and Hard of Hearing High School Students’ for Undergraduate Education in the Al-Qassim Region of Saudi Arabia
Authors: Alajlan Mohammed Saleh
Published: May 2022

Even though obtaining a university degree creates significant socioeconomic benefit, student success or attrition in higher education is deeply affected by their preparedness for this level of the educational journey. Hence, this study endeavored to examine the perceptions of deaf and hard of hearing (D/HH) Saudi high school students regarding their preparedness and readiness to enroll in undergraduate programs. This study employed a quantitative approach to investigate student preparedness using an electronically-distributed survey to obtain responses from 132 individuals. The study revealed that although overall most D/HH students feel they are prepared to enroll in undergraduate programs, gender and type of hearing loss were found to have significant effect on the respondents’ self-perceptions. The results of this research can provide educators with valuable insight into the preparedness of Saudi D/HH high school students to enroll in universities. This understanding can also shed light on how educators can create accommodations in the curriculum to support this population as they transition to college as well as guide educators and other stakeholders in how to teach and assess Saudi D/HH high school students to prepare them for undergraduate programs to increase retention, and graduation.

 

Received: 16 November 2021 / Accepted: 24 December 2021 / Published: 5 May 2022
Geographical Information System (GIS) Application to Property Valuation Practices in Port Harcourt Metropolis of Rivers State, Nigeria
Authors: Ayedun C.A. , Akinjare O.A. , Omodo E. , Alimi R.K.
Published: May 2022

Technology has in the recent years been vehicle for improving effectiveness and precision by different professions in an attempt to achieving the best practice by these professions. One of such technologies which can employ to aid Estate Surveying and Valuation practice is Geographical Information System (GIS). Valuation of properties including real estate and other assets have often been carried out through the application of manual methods which is often found to be cumbersome and sometimes not producing accurate and reliable results. It is in realization of the inherent deficiency entailed in the application of manual approach in carrying out valuation that this study seeks to investigate the application of Geographic Information System (GIS) to the art of valuation practice in Nigeria using Port Harcourt Metropolis of Rivers State as a case study with a view to ascertaining its inherent benefits to valuation practice. To achieve the aim of the study, questionnaires were administered to seventy-four (74) estate surveying and valuation firms randomly selected in the study area. Presentation and analysis of data was done using mean and relative important index. Finding from the study revealed that estate surveyors and valuer are quite aware of the inherent benefits of the geographical information system (GIS) to property valuation, but only very few of the Estate Surveying and Valuation firms make use of it in their valuation practice. The study further revealed that majority of the Estate Surveying and Valuation firms were willing to adopt its use if only they could gain better understanding of its application to valuation practice as its application is bound to having positive effect on the practice of Estate Surveying and Valuation profession. Based on the findings, the study recommends that training should be held to equip estate surveyors and valuers with the required skills for the application of geographical information system (GIS) since empirical research has shown that it has potential of enhancing valuation practices.

 

Received: 14 December 2021 / Accepted: 20 March 2022 / Published: 5 May 2022
Climate Change and Conflict Resolution in Africa: The Nexus
Authors: Ogbonna Hyginus Obinna , Mbah Chidi Slessor
Published: May 2022

The paper focuses on the nexus between climate change and conflict resolution in Africa. Its general objective is to assess the nature of relationship between climate change and conflict resolution, with the specific aims to identify how the interconnections between the twin concepts affect national security, and to propose policy-based recommendations to mitigate the anomalies. Its methodology include the use of qualitative descriptive method of analysis, secondary sources of information (books, internet, journals, newspapers, etc), and use of charts in its analysis. It adopted the Functionalist theory for its theoretical framework for needful extrapolations to explaining the nexus between climate change and conflict resolution. Some findings were made; a few of these include 1. There is inextricable causal relationship between climate change and conflict resolution: the more there are climate change-related conflicts, the more conflict resolution mechanisms emerge to resolve them; 2. Its impacts hold negative implications to national security; etc. In view of the findings, the paper therefore concluded that there is a correlation between the two variables, and recommends thus: leadership of the affected communities and the indigenes should be actively involved in resolving the climate change related conflicts; African national governments should take up climate change and conflict resolutions as top priorities in their national budgets with adequate provisions, etc.

 

Received: 27 February 2022 / Accepted: 29 April 2022 / Published: 5 May 2022
Sports Arbitration Procedures and Rules in Jordanian Legislation Compared to the Court of Arbitration for Sports (CAS)
Authors: Mahrous Mohammad Mamoun , Al-Maamari Abdulwahab Abdullah
Published: May 2022

The research dealt with the procedures and rules of sports arbitration in both Jordanian legislation and the Court of Sports Arbitration CAS, by presenting the legal texts related to arbitration in both Jordanian legislation and the Court of Sports Arbitration CAS, to benefit from them in the development of sports legal rules within the national level. The research reached a number of results, including: Settlement of sports disputes in Jordanian legislation through the Sports Federation for Sports Activity. The jurisdiction of the Court of Arbitration for Sport (CAS) in accordance with the 2021 Jordan Sports Federations Regulations can also be terminated, after all internal methods or means have been exhausted.

 

Received: 29 March 2022 / Accepted: 30 April 2022 / Published: 5 May 2022
Supplements to the Study of African Works of Art
Authors: Olaleye-Otunla Olufemi Joseph
Published: May 2022

For many years, the history of the arts, crafts and connoisseurship has been determined using the sensory organs; with the introduction of technology, researches in the sciences have found their ways into the study of humanities and the arts.  There exists recently additional modern, genuine and acceptable ways of assessing art historical studies other than the traditional sensory means - sight and touch. There is the need for art historical studies now to be more advanced, viewed from a global standard. Apart from formal, iconographic and iconological analyses, art historical studies of the 21st century attends to other pressing evidence and developments with the use of hi-tech and the embrace of scientific approach to studying works of art. Qualitative and evaluative modes of research have been employed for this discourse; it concludes with recommendations to research institutes and African governments to show interest in material compositional information of African art objects for their scientific and historical significance.

 

Received: 27 March 2022 / Accepted: 30 April 2022 / Published: 5 May 2022
Re-analysis Of Coronary Intravascular Lithotripsy - Can It Be Used In All Comers?
Authors: Mody Rohit
Published: May 2022

In severely calcified lesions, the intravascular lithotripsy (IVL) can be an effective therapy for preparation of the lesion so that drug eluting stent (DES) can be deployed optimally, and the future events of stent failure can be minimized. From the recent studies with IVL we can certainly say it is a novel therapy. The mechanism as depicted by optical coherence tomography (OCT) is found to be calcium fractures induced by shockwaves. The above said modification is done with minimal complications of perforation, no reflow, low incident of flow limiting dissection and myocardial infarctions. The other methods like cutting or scoring balloons, rotational atherectomy have also shown to improve luminal diameter, but other complications like distal embolization is a challenge of concern. This review reports a single centre study to all comer patients even with complex characteristics. This therapy was found to be very effective and with minimal complications. In this article we describe the mechanism of action, about IVL catheter, its OCT validation, clinical uses, its comparison with other calcium modifying technologies and what other future directions can be utilized to improve the technology and can it be used in all comers with calcified coronaries.
Application of the Molecular Pseudopotential Method for Modeling the Toxicity of Chemical compounds
Authors: Mukhomorov Vladimir
Published: May 2022

Statistical modeling of the relationship between the toxicity of a number of substituted benzo-2,1,3-thia- and selenadiazoles depending on the number of various substituents and their position in the benzene ring was performed. It has been statistically reliably established that the toxicity of the analyzed series of chemical compounds is closely related to the value of the molecular pseudopotential. It has been shown that the relationship between the toxicity of drugs correlates linearly with the molecular electronic factor, which characterizes the magnitude of the pseudopotential of the molecule.
Evaluation of foliar insecticides for the control of Thrips tabaci Lindeman (Thysanoptera: Thripidae) on onion field
Authors: Geremias Leandro Delalibera , Lins Junior Juracy Caldeira , Gonçalves Paulo Antônio de S.
Published: May 2022

Thrips tabaci Lindeman (Thysanoptera: Thripidae) is the main pest of onion. Chemical control is the most adopted method for this pest, however, there are few efficient products registered for thrips control in onion. Thus, this study aimed to evaluate the efficiency of six insecticides (abamectin + thiamethoxam, formetanate hydrochloride, spinetoram, fenitrothion + esfenvalerate, imidacloprid and thiacloprid) were tested for the control of onion thrips T. tabaci on onion in Itajaí Valley, SC during 2020. The insecticides were sprayed eight times at intervals of about seven days, we evaluated the number of nymph of thrips per plant 24 hours after two consecutive sprays and total onion bulb production. Significant differences were observed between various insecticides evaluated. The treatments formetanate hydrochloride and spinetoram proved the best thrips control however spinetoram did not differ from abamectin + thiaclooxam, fenitrothione + esfenvalerate and imidacloprid. Total bulb yield was higher for spinetoram, formetanate hydrochloride, abamectin + thiamethoxam and imidacloprid.
Analysis of Errors in Oral Production of French L3 Learners of Level A2 at a High School in Ecuador
Authors: Erazo Jiménez Rodrigo Javier
Published: May 2022

The present study explores the possible sources of the most frequent errors in oral production of teenage native Spanish speakers who are learners of French and have also received instruction in English. To attain this objective, online oral interactions in an interview-like setting of 15 students of a private school of Quito and their teacher have been transcribed and analyzed in search of errors. The results show that the most frequent types of erroneous production have to do with form rather than content and do not represent a major impediment to communication. As for their causes, many errors seem to have their origin in the interference of the first or second language, while some others are independent from such languages since both overgeneralization and oversimplification of the target language rules have been recorded.
Substituent effect on TADF properties of 2-modified 4,6-bis(3,6-di-tert-butyl-9-carbazolyl)-5-methylpyrimidines
Authors: Fiodorova Irina , Serevičius Tomas , Skaisgiris Rokas , Juršėnas Saulius , Tumkevicius Sigitas
Published: May 2022

The interest in organic materials exhibiting thermally activated delayed fluorescence (TADF) significantly increased in recent years owing to their potential application as emitters in highly efficient organic light emitting diodes (OLEDs). Simple modification of the molecular structure of TADF compounds through the selection of different electron-donating or accepting fragments opens great possibilities to tune the emission properties and rates. Here we present the synthesis of a series of novel pyrimidine–carbazole emitters and their photophysical characterization in view of effects of substituents in the pyrimidine ring on their TADF properties. We demonstrate that electron-withdrawing substituents directly connected to the pyrimidine unit have greater impact on the lowering of the energy gap between singlet and triplet states (ΔEST) for efficient TADF as compared to those attached through a phenylene bridge. A modification of the pyrimidine unit with CN, SCH3, and SO2CH3 functional groups at position 2 is shown to enhance the emission yield up to 0.5 with pronounced TADF activity.
On dissociating adjunct island and subject island effects
Authors: McInnerney Andrew , Sugimoto Yushi
Published: May 2022

In this paper we defend non-unified approaches to subject and adjunct islands. We review syntactic and extrasyntactic approaches as well as unified and non-unified approaches to these two island effects. Since Huang (1982), these two islands have been treated as two strong island effects (i.e., extraction out of these domains is uniformly banned). This idea was inherited in some Minimalist literature (e.g, Nunes & Uriagereka 2000). However, following Stepanov (2007), much recent Minimalist literature pursues non-unified analyses wherein the two islands have distinct explanations. The opposite situation holds for recent extrasyntactic approaches, which seem to prefer a unified analysis. We argue that existing unified extrasyntactic approaches are inadequate, and that the data call for a non-unified approach involving both syntactic and extrasyntactic principles.
Performance Analysis of DN1750 and DN1800 Electric Submersible Pump for Production Optimization on the Oil Well
Authors: Biantoro Agung Wahyudi , Darmono Bambang , Pranoto Hadi
Published: May 2022

Abstract. Electric Submersible Pump (ESP) is an artificial lift method to lift fluid from the reservoir to the surface with a certain production rate, the ability of the pump to lift a certain fluid to the surface is adjusted to the capacity of the well itself. Over time, the production of oil wells will experience a decrease in the rate of production which will cause a decrease in pump performance. In several oil wells, well maintenance activities have been carried out. Therefore, in this study, an analysis of pump performance and optimization of the ESP pump was carried out using the Nodal Variable Speed Drive analysis method. The goal is to determine the production capacity of the oil well and determine the pump speed as desired. Oil well performance analysis and optimization of the ESP pump were carried out by mathematical calculations with the optimization results obtained that the DN1750 pump was installed at a frequency of 50 Hz, 55 Hz, 60 Hz, 65 Hz, and 70 Hz. The Hz number does not cross the desired flow rate line (q optimum) or is outside the desired fluid flow rate range by the oil well so it can be interpreted that based on the observation of the optimization process, the condition of the DN1750 pump is not working optimally so that the oil production capacity is not optimal. The DN 1800 pump at a frequency of 55 Hz with a speed of 3300 rpm is in accordance with the production capabilities of oil wells so that the appropriate pump is obtained and is expected to work at optimum conditions. At a frequency of 55 Hz with a speed of 3300 rpm successfully cut the desired flow rate line (q optimum) from the observed oil well characteristics or is in the range of fluid flow rates desired by the oil well, which is 1936,698 Barrels Per Day (BPD) with wellbore pressure (PWF) 629 psi.
Independence tests in semiparametric transformation models
Authors: Hušková Marie , Meintanis Simos G. , Neumeyer Natalie , Pretorius Charl
Published: May 2022

Consider an observed response Y which, following a certain transformation T(Y), can be expressed by a homoskedastic nonparametric regression model referenced by a vector X of regressors. If this transformation model is indeed valid then conditionally on X, the values of T(Y) may be viewed as being just location shifts of the regression error, for some value of the transformation parameter. We propose tests for the validity of this model, and establish the limiting distribution of the test statistics under the null hypothesis and under alternatives. Since the null distribution is complicated we also suggest a certain resampling procedure in order to approximate the critical values of the tests, and subsequently use this type of resampling in a Monte Carlo study of the finite-sample properties of the new tests. In estimating the model we rely on the methods proposed by Neumeyer, Noh and Van Keilegom (2016) for the aforementioned transformation model. Our tests however deviate from the tests suggested by Neumeyer et al. (2016) in that we employ an analogue of the test suggested by Hlávka, Hušková and Meintanis (2011) involving characteristic functions, rather than distribution functions.
On a new approach to estimate the shape parameter of the inverse Gaussian distribution
Authors: Bourguignon Marcelo , Saulo Helton
Published: May 2022

In this paper, we propose a new simple method for estimating the shape parameter of the inverse Gaussian distribution. This new method makes use of the reciprocal property of the distribution. Also, bias-reduced versions of this proposed estimator are introduced. Furthermore, a new test for the coefficient of variation in an inverse Gaussian distribution is derived. The performance of the estimators are evaluated via Monte Carlo simulations. In general, compared with the maximum likelihood estimator, the proposed method has smaller bias. Two real data sets are used to illustrate the proposed methodology.
A nonparametric point estimation technique using the m-out-of-n bootstrap
Authors: Santana Leonard , Swanepoel Jan W. H.
Published: May 2022

We investigate a method which can be used to improve an existing point estimator by a modification of the estimator and by using the m-out-of-n bootstrap. The estimation method used, known as bootstrap robust aggregating (or BRAGGing) in the literature, will be applied in general to the estimators that satisfy the smooth function model (for example, a mean, a variance, a ratio of means or variances, or a correlation coefficient), and then specifically to an estimator for the population mean. BRAGGing estimators based on both a naive and corrected version of them-out-of-n bootstrap will be considered. We conclude with proposed data-based choices of the resample size, m, as well as Monte-Carlo studies illustrating the performance of the estimators when estimating the population mean for various distributions.
Autobin: A predictive approach towards automatic binning using data splitting
Authors: Verster Tanja
Published: May 2022

The concept of binning is known by many names: discretisation, classing, grouping and quantisation. It entails the mapping of continuous or categorical data into discrete bins. Binning is an important pre-processing step in most predictive models and considered a basic data preparation step in building a credit scorecard. Credit scorecards are mathematical models which attempt to provide a quantitative estimate of the probability that a customer will display a defined behaviour (e.g. default) with respect to their current credit position with a lender. Among the practical advantages of binning are the removal of the effects of outliers and a way to handle missing values. Many binning methods exist but they are often time consuming to actually carry out. We propose a new method, Autobin, that is based on data splitting and maximising a cross-validation form of the predicted log-likelihood. Autobin has the advantage of being nearly automatic and requires very little by way of tuning parameters. In a limited simulation study done, it was found that Autobin outperforms its competitors.
Kernel estimation of residual extropy function under α-mixing dependence condition
Authors: Maya R. , Irshad M. R.
Published: May 2022

As in the context of introducing the concept of residual entropy in the literature, Qiu and Jia (2018b) introduced the concept, residual extropy to measure the residual uncertainty of a random variable. In this work, we propose a nonparametric estimator for the residual extropy, where the observations under consideration are exhibiting α-mixing (strong mixing) dependence condition. Asymptotic properties of the estimator is derived under suitable regular conditions. A Monte Carlo simulation study is carried out to evaluate the performance of the estimator using the mean squared errors.
Activity and Rotation of Nearby Field M Dwarfs in the TESS Southern Continuous Viewing Zone
Authors: Anthony Francys , Núñez Alejandro , Agüeros Marcel A. , Curtis Jason L. , do Nascimento Jr. J.-D. , Machado João M. , Mann Andrew W. , Newton Elisabeth R. , Rampalli Rayna , Thao Pa Chia , Wood Mackenna L.
Published: May 2022

The evolution of magnetism in late-type dwarfs remains murky, as we can only weakly predict levels of activity for M dwarfs of a given mass and age. We report results from our spectroscopic survey of M dwarfs in the Southern Continuous Viewing Zone (CVZ) of the Transiting Exoplanet Survey Satellite (TESS). As the TESS CVZs overlap with those of the James Webb Space Telescope, our targets constitute a legacy sample for studies of nearby M dwarfs. For 122 stars, we obtained at least one R ≈ 2000 optical spectrum with which we measure chromospheric Hα emission, a proxy for magnetic field strength. The fraction of active stars is consistent with what is expected for field M dwarfs; as in previous studies, we find that late-type M dwarfs remain active for longer than their early-type counterparts. While the TESS light curves for ≈20% of our targets show modulations consistent with rotation, TESS systematics are not well enough understood for confident measurements of rotation periods (P
rot) longer than half the length of an observing sector. We report periods for 12 stars for which we measure P
rot ≲ 15 days or find confirmation for the TESS-derived P
rot in the literature. Our sample of 21 P
rot, which includes periods from the literature, is consistent with our targets being spun-down field stars. Finally, we examine the Hα-to-bolometric luminosity distribution for our sample. Two stars are rotating fast enough to be magnetically saturated, but are not, hinting at the possibility that fast rotators may appear inactive in Hα.
The Appearance of Vortices in Protoplanetary Disks in Near-infrared Scattered Light
Authors: Marr Metea , Dong 董 Ruobing 若冰
Published: May 2022

Azimuthally asymmetric structures have been discovered in millimeter continuum emission from many protoplanetary disks. One hypothesis is that they are vortices produced by the Rossby wave instability, for example at the edges of planet-opened gaps or dead zones. Confirming the vortex nature of these structures will have profound implications to planet formation. One way to test the hypothesis is to compare the observed morphology of vortex candidates in near-infrared scattered light with theoretical expectations. To this end, we synthesize the appearance of vortices in H-band polarized light by combining hydrodynamic and radiative transfer simulations of the Rossby wave instability at a dead-zone edge. In a disk at 140 pc, at the peak in its evolution a vortex at 65 au may appear as a radially narrow arc 50%–70% brighter compared with an axisymmetric disk model. The contrast depends on the inclination of the disk and the position angle of the vortex only weakly. Such contrast levels are well detectable in imaging observations of bright disks using instruments such as the Very Large Telescope/SPHERE, Subaru/SCExAO, and Gemini/GPI. A vortex also casts a shadow in the outer disk, which may aid its identification. Finally, at modest-to-high inclinations (e.g., 60°) a vortex may mimic a one-armed spiral. In the HD 34282 disk, such a one-armed spiral with a shadowed region on the outside has been found in scattered light. This feature roughly coincides with an azimuthal asymmetry in millimeter continuum emission, signifying the presence of a vortex.
Description of Perithreticus neglectus sp. n. from the West Usambara Mountains, Tanzania (Diptera, Psychodidae)
Authors: Kvifte Gunnar
Published: May 2022

The Psychodinae of the Afrotropical Region remain poorly understood. Slightly under 200 species have been described, but many countries have received very little attention from collectors and even countries where significant collection efforts have taken place have rarely had their collections studied in detail by specialist taxonomists.

Perithreticus neglectussp. n. is described from the West Usambara Mountains, Tanzania, based on a male specimen collected in 1990. The new species is similar toPerithreticus anderseniKvifte, 2015, which occurs in the same forest reserve, but can be separated by several genitalic characters, including the hypandrium well-developed with sclerotised anterior and posterior margins, gonocoxites narrower, the gonostyles with the slender apex shorter, the parameres shorter without pronounced basolateral projections and the surstylus with slightly fewer tenacula. The world fauna ofPerithreticusnow comprises five described species, of which two occur in the Afrotropical Region.
Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae)
Authors: Araya-Jaime Cristian Andrés , Silva Duílio Mazzoni Zerbinato de Andrade , da Silva Luís Ricardo Ribeiro , do Nascimento Cristiano Neves , Oliveira Claudio , Foresti Fausto
Published: May 2022

The genus Eigenmannia Jordan et Evermann,1896 includes electric fishes endemic to the Neotropical region with extensive karyotype variability and occurrence of different sex chromosome systems, however, cytogenetic studies within this group are restricted to few species. Here, we describe the karyotypes of Eigenmannia limbata (Schreiner et Miranda Ribeiro, 1903) and E. microstoma (Reinhardt, 1852) and the chromosomal locations of 5S and 18S rDNAs (ribosomal RNA genes) and U2 snDNA (small nuclear RNA gene). Among them, 18S rDNA sites were situated in only one chromosomal pair in both species, and co-localized with 5S rDNA in E. microstoma. On the other hand, 5S rDNA and U2 snRNA sites were observed on several chromosomes, with variation in the number of sites between species under study. These two repetitive DNAs were observed co-localized in one chromosomal pair in E. limbata and in four pairs in E. microstoma. Our study shows a new case of association of these two types of repetitive DNA in the genome of Gymnotiformes.
A new genus of Australian orb-weaving spider with extreme sexual size dimorphism (Araneae, Araneidae)
Authors: Framenau Volker W. , Castanheira Pedro de S.
Published: May 2022

The new Australian orb-weaving spider genusMangroviain the family Araneidae Clerck, 1757 is described. It is characterised by extreme sexual size-dimorphism (eSSD) with females (total length 8–10 mm) ca. 3 to 5 times larger than males (2.5–3 mm). WhilstMangroviashares with the informal Australian ‘backobourkiine’ clade a single seta on the male pedipalp patella, the genus is probably more closely related to the ‘zealaraneines’ or associated genera. In addition to eSSD and the single patellar spine, the genus is characterised by a distinct subterminal embolus branch in males. The new genus includes two species: the type speciesMangrovia albida(L. Koch, 1871)comb. nov.(=Epeira fastidiosaKeyserling, 1887,new syn.) from Queensland andMangrovia occidentalissp. nov.from Western Australia. Both species are apparently coastal and occur in mangroves, but also in riparian woodland. Spiders were found resting in rolled-up leaves adjacent to their orb-web.
L’auto-agression est-elle sexuelle ?
Authors: Denis Pierre
Published: May 2022

À partir des premiers entretiens avec une adolescente qui présente des comportements d’auto-agression, l’auteur explore les registres du vital et du sexuel, et les destins pulsionnels de l’agressivité à la lumière des deux topiques freudiennes.
Soins psychiques d’un adolescent parricide
Authors: de Luca Manuella
Published: May 2022

La survenue d’un passage à l’acte parricidaire à l’adolescence engage la nécessité d’une évaluation psychiatrique et psychopathologique. Les enjeux d’après-coup du traitement œdipien sont particulièrement sollicités chez l’adolescent comme chez les cliniciens chez lesquels la fascination et l’emprise peuvent entraver le processus thérapeutique. La dimension perverse est présente comme organisation défensive au secours d’une porosité entre dedans et dehors, fantasme et réalité.
“A short Recess from Talk and Tea”: The Sociable Geography of Snuff-Taking in Eighteenth-Century Britain
Authors: Alayrac-Fielding Vanessa
Published: May 2022

Cet article propose une interprétation de la perception, de l’usage et de l’image culturelle des tabatières dans la Grande-Bretagne du dix-huitième siècle. À partir d’approches théoriques empruntant à l’histoire de la culture matérielle et des émotions, cette étude propose d’analyser les tabatières sous l’angle de leur connectivité, comme des objets qui servirent à renforcer les pratiques de sociabilité et les liens entre les individus par les échanges de cadeaux offerts et reçus. L’article considère d’abord les espaces publics et privés dans lesquels priser était fort à la mode, puis s’intéresse aux discours souvent contradictoires sur cette pratique, qui permettent de révéler des considérations sur la classe sociale, le genre et l’art de la conversation.
Courageous Leadership
Authors: Jones-Schenk Jan
Published: May 2022

As the world watches war unfolding in Ukraine, leadership under the most extreme pressures is on full display. Health care and practice environments are not being bombed, but similar extreme events from the pandemic to workforce shortages to workplace safety to worsening equity outcomes are converging to challenge leaders in their roles. The daily pressures of solving and responding can drain the reserves of any leader. What can courageous leadership do for teams and those who lead them?

[
J Contin Educ Nurs
. 2022;53(5):198–199.]
Development and Implementation of a Nurse Residency Program Stakeholder Evaluation
Authors: Failla Kim Reina , Cosme Sheri
Published: May 2022

The American Nurses Credentialing Center (ANCC) Practice Transition Accreditation Program
®
(PTAP) annually awards the Program Director of the Year at the ANCC PTAP Symposium. This year the Commission on Accreditation in Practice Transition Programs and ANCC PTAP team is ecstatic to announce Dr. Kim Failla, from Sharp HealthCare, as the awardee. Dr. Failla's dedication to nurses in transition and quality improvement is impressive. Learn here about the Sharp HealthCare PTAP journey and their stakeholder evaluation tool.

[
J Contin Educ Nurs
. 2022;53(5):195–197.]
Quality of Life of Older Adults With Complicated Grief: A Mixed Methods Exploration
Authors: Mason Tina M. , Szalacha Laura A. , Tofthagen Cindy S. , Buck Harleah G.
Published: May 2022

The current mixed methods study investigated what changes in quality of life (QOL) mean to older adults with complicated grief treated with Accelerated Resolution Therapy (ART) post-hospice services. An informational matrix, which included select patient characteristics (e.g., number of comorbidities, single versus multiple deaths, relationship role), four identified qualitative themes, end of study QOL scores measured by the Centers for Disease Control and Prevention Health-Related QOL Healthy Days Module, and changes in scores from baseline to end of study, was created to analyze the data. Results showed that although a history of multiple deaths may contribute to greater improvements in QOL with therapy, having at least one comorbidity resulted in a richer description and endorsement of QOL in response to treatment. This is the first longitudinal, randomized controlled trial using a mixed methods approach to examine QOL of hospice family caregivers with complicated grief who are receiving ART. This study identifies potential links of QOL and caregiver characteristics, providing nurses with foundational knowledge for assessment, care, and further research on the experiences of complicated grief. [
Journal of Gerontological Nursing, 48
(5), 19–26.]
New Treatment Aimed at Preventing Alzheimer's Dementia
Authors: Kverno Karan
Published: May 2022

The end-stage of Alzheimer's disease is Alzheimer's dementia, a disease that kills one in every three older adults. The disease progressively impairs cognition and functioning, and ultimately independence. With the aging of society, the prevalence of Alzheimer's dementia is increasing. The purpose of the current article is to describe a shift in drug research goals from slowing the progression of Alzheimer's dementia toward prevention of dementia through early identification of mild cognitive impairment due to Alzheimer's disease and targeted disease-modifying treatments. The first approved drug for Alzheimer's disease is aducanumab, an amyloid beta-directed monoclonal antibody that targets brain beta amyloid plaques for removal. [
Journal of Psychosocial Nursing and Mental Health Services, 60
(5), 11–14.]
Nurse Mentorship to Support Healthy Growth of Adolescent Girls
Authors: Moore Shawana S. , Stephens Ashley , Kelly Patricia J.
Published: May 2022

Adolescent girls from many urban communities are a vulnerable population, with high rates of school dropout, pregnancy, sexually transmitted infections, and substance use disorders. Mentorship programs can support the growth and development of this at-risk population. We report on the content of a pilot girls' empowerment program created by nurse faculty to promote health and self-awareness among underserved adolescent girls. Pre/post program scores of 15 participants using the Harter Self-Perception Profile for Adolescents found positive changes in seven of eight domains: scholastic (
p
= 0.001), social (
p
= 0.001), appearance (
p
= 0.001), job competence (
p
= 0.003), conduct (
p
= 0.02), close friendship (
p
= 0.006), and self-worth (
p
= 0.001). Nurse faculty and students might consider the development of similar mentorship programs for adolescent girls. [
Journal of Psychosocial Nursing and Mental Health Services, 60
(5), 15–18.]