scholarly journals A Note on The Abel Matrix Transformations

Author(s):  
Mulatu Lemma ◽  
Latrice Tanksley ◽  
Keisha Brown

The purpose of this research is to investigate the effect of applying At to convergent sequences, bounded sequences, divergent sequences, and absolutely convergent sequences. We considering and answer the following interesting main research questions.

1968 ◽  
Vol 20 ◽  
pp. 727-734 ◽  
Author(s):  
I. J. Maddox

Let X = (X, p) be a seminormed complex linear space with zero θ. Natural definitions of convergent sequence, Cauchy sequence, absolutely convergent series, etc., can be given in terms of the seminorm p. Let us write C = C(X) for the set of all convergent sequences for the set of Cauchy sequences; and L∞ for the set of all bounded sequences.


2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Naim L. Braha ◽  
Feyzi Başar

We introduce the spaces of -null, -convergent, and -bounded sequences. We examine some topological properties of the spaces and give some inclusion relations concerning these sequence spaces. Furthermore, we compute -, -, and -duals of these spaces. Finally, we characterize some classes of matrix transformations from the spaces of -bounded and -convergent sequences to the spaces of bounded, almost convergent, almost null, and convergent sequences and present a Steinhaus type theorem.


Filomat ◽  
2010 ◽  
Vol 24 (3) ◽  
pp. 103-109 ◽  
Author(s):  
S.A. Mohiuddine ◽  
M. Aiyub

In this paper, we define the spaces ?(p, s) and ?p (s), where ?(p, s) = {x:1/n? k=1 K-s |xk -?|pk ? 0 for some ?, s ? 0} and if pk = p for each k, we have ?(p, s)=?p(s). We further characterize the matrix classes (?(p, s), V? ), (?p (s), V? ) and (?p (s), V? )reg , where V? denotes the set of bounded sequences all of whose ?-mean are equal.


Author(s):  
Neyaz Ahmad Sheikh ◽  
Ab. Hamid Ganie

The sequence space bv(u,p) has been defined and the classes (bv(u,p):l?), (bv(u,p):c),and (bv(u,p):c0) of infinite matrices have been characterized by Ba?ar, Altay and Mursaleen ( see, [2] ). The main purposes of the present paper is to characterize the classes (bv(u,p):ƒ?),(bv(u, p):ƒ), and (bv(u,p):ƒ0), where ƒ?, ƒ, and ƒ0 denotes the spaces of almost bounded sequences, almost convergent sequences and almost convergent null sequences, respectively, with real or complex terms. Kathmandu University Journal of Science, Engineering and Technology Vol. 8, No. II, December, 2012, 89-92 DOI: http://dx.doi.org/10.3126/kuset.v8i2.7330


2017 ◽  
Vol 1 (104) ◽  
pp. 55-64 ◽  
Author(s):  
Kadir Yıldız ◽  
Pınar Güzel ◽  
Fırat Çetinöz ◽  
Tolga Beşikçi

Background. In this research, we aimed to investigate the effects of outdoor camps on orienteering athletes. Methods. The study group consisted of 74 athletes (44 males and 30 females, aged 11.94 ± 1.32 years) who participated in Bolu outdoor camp on the 3 rd –13 th of August, 2015. Interview technique, which is one of the qualitative research methods, was used as data collection tool and content analysis method was used for data analysis. Results. Demographic factors were interpreted after the analysis of the obtained data and three main research questions were discussed under the topics of the views of athletes about the concept of Orienteering which is an outdoor sport, themes and codes regarding the purpose of Orienteering by the students who participated in the outdoor camp, and themes and codes about the outcomes of Orienteering for the students who participated in outdoor camps. Conclusion. It is suggested that a policy must be developed within the Ministry of Youth and Sport and Sport Federations in order to disseminate more deliberate and more comprehensive outdoor education among young people and measures should be taken to provide extensive participation.


2021 ◽  
Vol 1 ◽  
pp. 1373-1382
Author(s):  
Avril Thomson ◽  
Hilary Grierson

AbstractThe paper reports on a study that aims to gain an understanding of how senior engineering design students engage and attain throughout the various stages of the design process during a major design project. Following a literature review it sets out to answer 3 main research questionsQ1. Do students engage more with certain stages of the design process during major project work?;Q2. Do students attain better during certain phases of the design process during major project ?Q3. Is there a difference in this attainment between year groups of the same degree programme ?The methodology adopted employs an analysis of marks and an online questionnaire to collect data. Patterns and trends in how senior BEng and MEng Product Design Engineering students engage and attain within the design process are presented, identified and discussed and in turn used to inform reflection on the research questions set.


2020 ◽  
Vol 12 (24) ◽  
pp. 10360
Author(s):  
Hyun-Do Yun ◽  
Sun-Woong Kim ◽  
Wan-Shin Park ◽  
Sun-Woo Kim

The purpose of this study was to experimentally evaluate the effect of a hinged steel damping system on the shear behavior of a nonductile reinforced concrete frame with an opening. For the experimental test, a total of three full-scale reinforced concrete frame specimens were planned, based on the “no retrofitting” (NR) specimens with non-seismic details. The main research questions were whether the hinged steel damping system is reinforced and whether torsion springs are installed in the hinged steel damping system. From the results of the experiment, the hinged steel damping system (DR specimen) was found to be effective in seismic retrofitting, while isolating the opening of the reinforced concrete (RC) frame, and the torsion spring installed at the hinged connection (DSR specimen) was evaluated to be effective in controlling the amount of deformation of the upper and lower dampers. The strength, stiffness, and energy dissipation capacity of the DSR specimen were slightly improved compared to the DR specimen, and it was confirmed that stress redistribution was induced by the rotational stiffness of the torsion spring installed in the hinge connection between the upper and lower frames.


2019 ◽  
Vol 8 (1) ◽  
pp. 50-67
Author(s):  
Lukasz Damurski ◽  
Jacek Pluta ◽  
Jerzy Ładysz ◽  
Magdalena Mayer-Wydra

Services originally developed as natural concentrations of human activity, reflecting the Christallerian hierarchy of central places. Today, those natural mechanisms are challenged by strong competition from online facilities. More and more services are offered by the internet and this affects the traditional ‘bricks-and-mortar' urban development. In this article, the main research problems of the inter-relatedness of real and virtual environments are defined in the context of urban neighbourhood service centres. The process of conversion from offline services into online ones is treated as a canvas for building a comprehensive research model for studying the development of the contemporary urban services sector in the local scale. Particular research questions and hypotheses are formulated and followed by a set of methods for further empirical research.


Symmetry ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 1768
Author(s):  
R. Nemec ◽  
A. Jahodova Berkova ◽  
S. Hubalovsky

This article describes the research results aimed at distance education during the Covid-19 pandemic and closing schools and its symmetry with the classical state in terms of time, difficulty, and the mental and physical condition of students. An important aspect is therefore to maintain the symmetry of attitudes to teaching in face-to-face form and distance form. In terms of the eight-year gymnasium in the Czech Republic, students’ attitudes to the teaching subject informatics were investigated. The main research questions in our study dealt with whether students felt equally balanced regarding the amount of tasks and time taken for home preparation during the Covid-19 outbreak compared with the time before the quarantine and their condition (both mental and physical) during the Covid-19 outbreak. The research was conducted using an anonymous questionnaire, which was answered by 110 out of 180 students. According to the results, it is evident that students felt that during the distance education, there are more tasks compared to face-to-face ones. Students also claimed to spend more time learning at distance education than at school. On the other hand, they agreed that the self-education schedule is suitable for them. In terms of the questionnaire, their condition (both mental and physical) was also evaluated, which was slightly above the average.


2021 ◽  
Vol 11 (9) ◽  
pp. 1166
Author(s):  
Magdalena Bury-Kamińska ◽  
Aneta Szudy-Szczyrek ◽  
Aleksandra Nowaczyńska ◽  
Olga Jankowska-Łęcka ◽  
Marek Hus ◽  
...  

The paper presents a study on the changes in cognitive functioning in patients undergoing chemotherapy with diagnosed multiple myeloma (MM). The aim of the study was to answer the following two main research questions: Does the treatment stage differentiate the functioning of cognitive processes in patients with diagnosed MM and to what extent? Is it possible to treat biological factors (TNF-α, IL-6, IL-10, and BDNF) as predictors of patients’ cognitive functioning? The patients were examined twice, before the treatment and after 4–6 cycles of chemotherapy. Selected neuropsychological research methods as well as experimental and clinical trials were employed to diagnose the patients’ general cognitive state, attention, memory, and executive functions. The level of biological factors was assessed with the ELISA test. The results show that the patients’ cognitive functioning was worse before the treatment than during the cytostatic therapy. It was also possible to predict the cognitive state of patients suffering from multiple myeloma based on a selected biological parameter (neurotrophin BDNF).


Sign in / Sign up

Export Citation Format

Share Document