Terms Of Certain Characteristics Research Articles

Öğretmen Adaylarının Dijital Okuryazarlık Düzeyleri ile Web Ortamında Bilgi Arama ve Yorumlama Stratejileri Arasındaki İlişkinin İncelenmesi

The purpose of this study is to investigate, in terms of certain characteristics, the relationship between pre-service teachers' digital literacy levels and their methods for looking up and analyzing information on the internet. During the 2019–2020 academic year, 500 teacher candidates at Necmettin Erbakan University Ahmet Keleşoğlu Faculty of Education were given the Information Search and Interpretation Strategies Scale. A statistical program was utilized to analyze the research data. Gender, grade level, weighted grade averages, daily internet usage, daily social media usage, prior digital literacy education, mother and father education levels, and the most preferred device for Internet access were all identified as a consequence of the statistical analysis. The degree of digital literacy and the methods used to find and analyze information online did not appear to be significantly correlated. The digital literacy levels, information search and interpretation tactics used in the online environment, and the most frequent internet use characteristic of pre-service teachers were found to differ significantly.

Characterizing interval graphs which are probe unit interval graphs

A graph G is a probe unit interval graph if its vertex set can be partitioned into a set P of probe vertices and a stable set N of nonprobe vertices, so that a unit interval graph can be obtained by adding a set of edges whose endpoints belong to N. A partitioned graph is a graph having a prescribed partition into P and N. In this article we present structural characterizations for those partitioned interval graphs and unpartitioned interval graphs which are probe unit interval graphs, in terms of certain characteristics of their interval models. These characterizations lead to characterizations of probe unit interval graphs within the class of interval graphs by minimal forbidden induced subgraphs.

CT features and differential diagnosis of primary pulmonary mucoepidermoid carcinoma and pulmonary adenoid cystic carcinoma.

The differential diagnosis of primary pulmonary mucoepidermoid carcinoma (PMEC) and pulmonary adenoid cystic carcinoma (PACC) is difficult, because both tumors could be similar in terms of certain characteristics on CT. The CT findings from 24 cases of PMEC and 30 cases of PACC were retrospectively analyzed. According to the position of the lesion in airway, we divided these cases into three types: central, hilar, and peripheral. In PMEC, there were 7 cases of central type, 14 cases of hilar type, and 3 cases of peripheral type. And, 57.1% PMEC cases of the hilar type were accompanied by distal bronchial dilatation with mucoid impaction. Patchy areas of low density were observed in 79.2% cases of PMEC. The solid part of most lesions showed moderate (37.5%) or severe enhancement (45.8%). However, in PACC, there were 24 cases of central type, 3 cases of hilar type, and 3 cases of peripheral type. PACC had more cases of central type than PMEC. Moreover, longitudinal extent greater than 3 cm was observed in 62.5% PACC cases of the central type, while infiltration of the luminal perimeter more than 1/2 perimeter was observed in 95.8% PACC cases of the central type. Patchy areas of low density were observed in 26.7% cases of PMEC. In PACC cases, the solid part of 76.7% lesions showed slight enhancement. Cavities could be observed in PMEC, but not in PACC. PMEC and PACC have different CT features in various airway locations. PMEC is usually the hilar type, accompanied by distal bronchial dilatation with mucoid impaction. However, PACC is usually the central type, with longitudinal extent greater than 3 cm and infiltration of the luminal wall more than 1/2 perimeter. Patchy areas of low density and moderate or severe enhancement are more prominent in PMEC. However, slight enhancement is more common in PACC.

The Research Progress of Quantum Dot Lasers and Photodetectors in China

Self-assembled In(Ga)As/GaAs quantum dots (QDs), known as "artificial atoms" for their fully quantized electronic states, show unique physical properties and new prospects for applications. Based on the QDs, an increasing number of leading laboratories on the world engage in developing novel optoelectronic devices with special advantages over existing devices. This paper reviews the current research developments in self-assembled QD devices in China, covering QD lasers and inter sub-level QD photodetectors. QD devices in China are undergoing a rapid advance and have achieved the world's best results in terms of certain characteristics.

New-Generation Personal Rapid Transit Technologies

An overview and a comparison of several new-generation personal rapid transit (PRT) technologies are provided. A total of about 40 known PRT concepts existed as of 2007, of which 19 were being actively developed (i.e., not dormant, with some testing completed). Of the 19, 10 had readily accessible operational specifications, enabling an assessment and comparison. Ten operational parameters were considered for each of the technologies. A throughput of 7,200 passengers per hour on a single-track PRT line is possible with a minimum headway of 1.0 s, line speed of 35 km/h, and braking rate of 9.8 m/s2 (i.e., Gx). A minimum headway of 0.5 s is possible either at low speeds (<20 km/h) or with hard emergency braking (≥2Gx). PRT technologies proposing values that exceed these limits may not be feasible. To accommodate short headways and high emergency braking rates, controls that require seated passengers should be considered. Only Urban Light Transport and Vectus feature a full slate of either feasible or fundamental (i.e., preferable) operating characteristics. CyberCab and MISTER would be more feasible with decreases in minimum headway and line speed, respectively. The other technologies are partially feasible, unclear in terms of certain characteristics, or better classified as “high-speed” PRT. The findings may facilitate the formulation of PRT standards and operating criteria. These, along with a successful implementation of PRT at Heathrow Airport in England, may generate new markets and competitive technologies. Further studies comparing guideway design, materials, switching, station design, visual impacts, costs, and financing are needed.

Reliable Evaluation of Performance Level for Computer-Aided Diagnostic Scheme

Computer-aided diagnostic (CAD) schemes have been developed for assisting radiologists in the detection of various lesions in medical images. The reliable evaluation of CAD schemes is an important task in the field of CAD research. Many evaluation approaches have been proposed for evaluating the performance of various CAD schemes in the past. However, some important issues in the evaluation of CAD schemes have not been systematically analyzed. The first important issue is the analysis and comparison of various evaluation methods in terms of certain characteristics. The second includes the analysis of pitfalls in the incorrect use of various evaluation methods and the effective approaches to the reduction of the bias and variance caused by these pitfalls. We attempt to address the first important issue in details in this article by conducting Monte Carlo simulation experiments, and to discuss the second issue in the Discussion section. No single evaluation method is universally superior to the others; different situations of CAD applications require different evaluation methods, as recommended in this article. Bias and variance in the estimated performance levels caused by various pitfalls can be reduced considerably by the correct use of good evaluation methods. This article would be useful to researchers in the field of CAD research for selecting appropriate evaluation methods and for improving the reliability of the estimated performance of their CAD schemes.

On Edgeworth expansions for dependency-neighborhoods chain structures and Stein's method

Let W be the sum of dependent random variables, and h(x) be a function. This paper provides an Edgeworth expansion of an arbitrary ``length'' for %E{h(W)} in terms of certain characteristics of dependency, and of the smoothness of h and/or the distribution of W. The core of the class of dependency structures for which these characteristics are meaningful is the local dependency, but in fact, the class is essentially wider. The remainder is estimated in terms of Lyapunov's ratios. The proof is based on a Stein's method.

Lattice Point Problems and Distribution of Values of Quadratic Forms

For d-dimensional irrational ellipsoids E with d > 9 we show that the number of lattice points in rE is approximated by the volume of rE, as r tends to infinity, up to an error of order o(rd-2). The estimate refines an earlier authors' bound of order O(rd-2) which holds for arbitrary ellipsoids, and is optimal for rational ellipsoids. As an application we prove a conjecture of Davenport and Lewis that the gaps between successive values, say s 0 as s - oo, for d > 9. For comparison note that sups(n(s) - s) 0, for rational Q[x] and d > 5. As a corollary we derive Oppenheim's conjecture for indefinite irrational quadratic forms, i.e., the set Q[Zd] is dense in R, for d > 9, which was proved for d > 3 by G. Margulis [Marl] in 1986 using other methods. Finally, we provide explicit bounds for errors in terms of certain characteristics of trigonometric sums.

Identifying Fashion Clothing Innovators by Self-Report Method

ABSTRACT Early adopters or innovators play an important role in the life cycle of a new product by providing feedback information and a positive cash flow for the company, raising barriers to entry that prevent other firms from easily entering the market and making later adopters use the product, spreading word-of-mouth communication. If innovators are identifiable in terms of certain characteristics, marketers can develop effective marketing programs to this important segment of the related market. To identify characteristics of innovators some methods are developed but it is difficult to state that there is a universally agreed upon measure of the innovativeness construct in the diffusion literature. Furthermore, the methods to measure innovativeness have been criticized in terms of reliability and validity. The aim of this study is to identify fashion clothing innovators based on a self report scale developed by Goldsmith and Hofacker (1991) which was found to be highly reliable and valid, adaptable ac...

Reflexivity of Tensor Products of Linear Transformations

Let A and B be linear transformations on finite-dimensional Hilbert space. We characterize the reflexivity of $A \otimes B$ in terms of certain characteristics of A and B.

Reflexivity of tensor products of linear transformations

Let A and B be linear transformations on finite-dimensional Hilbert space. We characterize the reflexivity of A ⊗ B A \otimes B in terms of certain characteristics of A and B.

Disaster Planning and Response

Disasters are tragedies that overwhelm our communities, destroy our property, and harm our populations. The United Nations General Assembly, recognizing the magnitude of the problem, has declared the 1990s the International Decade of Natural Disaster Reduction and has called for a worldwide effort to reduce the loss of life and property. The involvement of the medical community in this effort is crucial. Disasters are the results of natural or man-made events and are routinely described in terms of certain characteristics (Table 1).1 2 3 Yet each is unique, each is of extreme urgency, and each places a tremendous burden on the community . . .

System dynamics and operational research: An appraisal

During its 25 year history System Dynamics has frequently attracted criticism. This paper argues that, in part, this is explicable in terms of certain characteristics of the approach adopted by most workers in the field. The major features of this approach are reviewed and assessed from a general perspective. Those aspects of the method that are related to model construction and use are then examined in more detail and certain suggestions are made as to how its utility might be enhanced with the aid of techniques developed in other fields. The paper concludes with a brief examination of those areas in which increased application of System Dynamics ideas is envisaged.

Rate of formation of associations by schizophrenic and normal subjects as a function of stimulus or response placement of aversive components.

This study investigated the formation by schizophrenic and non-psychotic Ss of associations involving neutral and aversive stimulus components in two paired-associate paradigms. Both groups of Ss tended to form associations involving aversive stimuli faster than those involving neutral stimuli in both paradigms. These results were in marked contrast to those of a previous study in which the identical aversive words served as responses. The discrepancies in findings of the two studies were discussed in terms of certain characteristics of aversive words and differential reactions to them.

On the $${\mathcal{N}}$$ -component in extensive air showers-component in extensive air showers

According toNikolskijet al. (1957), the number of nuclear-active (\({\mathcal{N}}\)) particles in air showers increases fairly slowly, asE0.2, for showers ranging in energy from 1013 eV to 1015 eV. At energies >1015 eV the increase is more rapid and is ∝E. This variation in the\({\mathcal{N}}\)-component with the size of the shower and certain other observed features of air showers have been interpreted previously as an indication of a change in the nature of nuclear interactions at very high energies or as an indication of specific details in the nature and composition of the primary cosmic radiation, such as the existence of a cut-off in the magnetic rigidity of the particles and the predominance of heavy primaries at very high energies. In this paper an attempt is made to explain the above observed features in terms of certain characteristics of nucleon-nucleus (\(n - {\mathcal{N}}\)) pion-nucleus (\(\pi - {\mathcal{N}}\)) collisions; the term « nucleus » here refers to an « air nucleus ». The main aspect of the (Nikolskij) curve, for the abundance of\({\mathcal{N}}\)-particlesvs. shower energy, considered here, is not the rapid increase of the\({\mathcal{N}}\)-component in showers of energy >1015 eV, nor the existence of a change in the abundance of\({\mathcal{N}}\)-particles in going from small showers to big showers, but rather the fairly slow increase in the number of\({\mathcal{N}}\)-particles in showers of energy (1013÷1015) eV. This slow increase, which is contrary to general experience in cascade calculations, puts stringent limitations on the choice of parameters that characterize\(n - {\mathcal{N}}\) and\(\pi - {\mathcal{N}}\) collisions. It is shown that\(n - {\mathcal{N}}\) and\(\pi - {\mathcal{N}}\) collisions are largely elastic and that the number of secondary nucleons produced in such collisions is quite small (of the order of one or two); further, in a\(\pi - {\mathcal{N}}\) collision, the energy going into the nucleon component is a very small fraction of the energy of the incident pion. These features also result in a rapid increase in the\({\mathcal{N}}\)-component of big showers; this arises as a result of the complicated role played by charged pions owing to their finite life time. In small showers the charged pions have only small energies and hence they mostly decay and do not contribute appreciably to the\({\mathcal{N}}\)-component. In big showers, however, the pions have sufficiently high energy to make nuclear interactions before decaying and owing to the large multiplicity of pions produced in\(n - {\mathcal{N}}\) and\(\pi - {\mathcal{N}}\) collisions, there is a rapid increase in the number of\({\mathcal{N}}\)-particles with increasing energy of the shower. Some experiments are suggested to distinguish between the various possible explanations.