Vakhtang Jandieri, Lana Okropiridze, Kiyotoshi Yasumoto, Daniel Erni and Jaromir Pistora
The purpose of this paper is to develop a rigorous self-contained formulation for analyzing electromagnetic scattering by grating of plasmonic nanorods. The authors investigate…
Abstract
Purpose
The purpose of this paper is to develop a rigorous self-contained formulation for analyzing electromagnetic scattering by grating of plasmonic nanorods. The authors investigate this structure from the viewpoint of the practical application as a refractive index plasmonic sensor. The presented rigorous formulation is accompanied with a neat implementation providing a high computation efficiency and could be considered as an important tool for designing and optimizing compact sensors.
Design/methodology/approach
Scattering of an incident plane wave by grating made of a periodic arrangement of metal-coated dielectric nanocylinders on a dielectric slab is rigorously investigated using the recursive algorithm combined with the lattice sums technique. As a dielectric slab, the authors consider glass material, which is widely used in experiments, whereas silver (Ag) is used as a low loss metal suitable to excite plasmon resonances. The main advantage of the developed self-contained formulation is that first the authors extract the reflection and transmission matrices of a single planar array from a separate analysis of the grating and the slab and then obtain the scattering characteristics of the whole structure by using a recursive formula. The method is computationally fast.
Findings
Dependence of the surface plasmon resonance wavelength on the refractive index of the surrounding medium is carefully investigated. The resonance peaks are red-shifted with respect to an increasing refractive index of surrounding medium showing an almost linear behavior. Near field distributions are analyzed at the resonance wavelengths of the spectral responses. Special attention is paid to the formation of the dual-absorption bands because of the excitation of the localized surface plasmons. The authors give physical insight to the coupling between grating and the glass slab. The authors found that a strong enhancement of the field inside the slab occurs when the scattered wave of the grating is phase-matched to the guided modes supported by the slab.
Originality/value
In the authors’ formulation, they do not use any approximation and it is rigorous and accurate. The authors use their original method. The method is based on the lattice sums technique and uses the recursive algorithm to calculate the generalized reflection and transmission characteristics by grating. Such fast and accurate method is an effective tool apt for designing and optimizing tailored sensors, for e.g. advanced biomedical applications.
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Erni Munastiwi, Ali Murfi, Sri Sumarni, Sigit Purnama, Naimah Naimah, Istiningsih Istiningsih and Annisa Dian Arini
The research aimed to explore the issues in the implementation of online education practice in elementary school, to study teachers' coping strategy to the online education issues…
Abstract
Purpose
The research aimed to explore the issues in the implementation of online education practice in elementary school, to study teachers' coping strategy to the online education issues and to evaluate teachers' problem-solving skill in online learning practice during the Covid-19 pandemic.
Design/methodology/approach
An exploratory research focused on identifying the obstacles in teaching practice faced by elementary school teachers as well as their coping strategy with eight convenience sampled schools.
Findings
Online education practice faced unpreparedness and competency issues. Unpreparedness was found in terms of social, technical and cultural factors, while competency issue was related to online education competency and digital competency. Teachers’ struggle to cope with the issue in online education practice was focused on the performing conventional education in the online manner, suggesting teachers' lack of competency in encouraging learning success. Teachers neglected the development of students' readiness and competencies to engage in online learning. Moreover, teachers’ struggle had the least impact on the development of their online teaching competency and digital competency that are required for carrying out online teaching. In general, teachers' problem-solving skill was below the expected level. These findings suggested that improvement of teachers' competencies is important in order to cope with the issues such as in online education practice during Covid-19 pandemic and to face future challenges in education.
Originality/value
This study evaluated the gap between actual action and expected action of elementary school teachers in coping with the issues regarding online education practice.
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This case focuses on organizational development, leadership and HR management questions.
Abstract
Subject area
This case focuses on organizational development, leadership and HR management questions.
Study level/applicability
This case is mainly aimed at students specialized in leadership, organizational development and HR, or in MBA and executive education. However, undergraduate students can benefit from it as well and learn about key terms related to organizational development and HR.
Case overview
Loxon Solutions is a Hungarian technology startup founded in 2000 that develops various software solutions for the banking industry to improve processes such as retail and corporate landing, collateral management and monitoring, among others. The company grew significantly since being founded, and from a small IT company it became a significant player in the banking software industry all around the world. However, with rapid extension comes a drastic internal transformation as well: Loxon now employs 252 people, has 5 physical offices in 2 different countries and is trying to balance an effective organizational structure and a friendly startup environment. It is clear that the company needs to adapt its previously informal structure to fit the now middle-sized organization while maintaining the current benefits of their culture. Also, they require stability and maturity which the current team consisting of mostly junior employees and the significant fluctuation cannot provide. Tamas Erni, the CEO and Kristof Farkas, the founder of Loxon are now working on these pressing issues with the company’s HR department to rethink the company’s organizational structure and policies as well as their hiring and employer branding strategies.
Expected learning outcomes
Students should get familiar with typical organizational structure models, the meaning of Employee Value Proposition and main KPIs related to hiring and employee retention.
Supplementary materials
Teaching notes are available for educators only.
Subject code
CSS 6: HR Management.
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The purpose of this paper is to contribute to understandings of how documents are experienced by looking to work in reception studies for methodological examples. Based on a…
Abstract
Purpose
The purpose of this paper is to contribute to understandings of how documents are experienced by looking to work in reception studies for methodological examples. Based on a review of research from literary studies, communication studies and museum studies, it identifies existing approaches and challenges. Specifically, it draws attention to problems cited in relation to small-scale user studies and suggests an alternative approach that focusses on how infrastructures influence experience.
Design/methodology/approach
This paper presents data collected from over a year of ethnographic work at a cultural archive and exhibition space and analyses the implications of infrastructural features such as institutional organization, database structures and the organization of physical space for making available certain modes of reception.
Findings
This research suggests that infrastructure provides a useful perspective on how experiences of documents are influenced by larger systems.
Research limitations/implications
This research was conducted to explore the implications of an alternative research methodology. Based on the ethnographic study presented, it suggests that this approach produces results that warrant further work. However, as it is intended only to be a test case, its scope is limited, and future research following the approach discussed here should more fully engage with specific findings in relation to the experience of documents.
Originality/value
This paper presents an alternative approach to studying the experience of documents that responds to limitations in previous work. The research presented suggests that infrastructures can reveal ways that the experience is shared across contexts, shifting discussions from individuals and objects to technical systems, institutions and social structures.
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In international business international technology transfer is an important part. It involves several modes. Product or process technologies can be transferred to a host country…
Abstract
In international business international technology transfer is an important part. It involves several modes. Product or process technologies can be transferred to a host country within a multinational company. Other modes include sale or licensing of technology. In these cases a company other than the technology owner takes technology to a host country. International technology transfer involves many matters such as transfer mode, government trade policies, risk of losing technology and influence of industry associations. In this chapter I report a longitudinal case study (1950–1980) of the diffusion of new manufacturing technology, suspension preheating, within the U.S. cement industry. Here I employ concepts from the literature on international technology transfer. Based on this analysis I identify what impact international technology transfer literature has on dominant design theory. Here I address in more detail the era of ferment of the most recent technology adoption (that is innovation).The U.S. cement industry was included in the original development of the dominant design model. However, technology adoption or innovation was defined as the first commercial introduction of a product made by a new manufacturing technology or process in the United States. This domestic definition of technology adoption neglects all aspects of international technology transfer mentioned earlier.While comparing the results of these two studies of the U.S. cement industry I found differences in the adoption time of technology and inconsistence in the introduction of the technology in the United States. I found that the length of the era of ferment was 29 years – contrary to the seven years reported in the development of dominant design model. This time difference has naturally impacted on the analysis of diffusion. It seems that the international business and international technology transfer literature have impacted on the dominant design model and theory.
IF we count the University of Strathclyde School of Librarianship as a “new” school—rather than simply an old school transferred from a College of Commerce to a university—then…
Abstract
IF we count the University of Strathclyde School of Librarianship as a “new” school—rather than simply an old school transferred from a College of Commerce to a university—then four “new” schools were established between 1963 and 1964, three of the four in universities and the other closely linked with a university, though remaining independent. All four schools have their special features but I consider the more significant of Belfast's features to be its right, from the outset, to conduct all its own examinations for graduates and non‐graduates. Queen's was also the first British university to provide non‐graduates with courses in librarianship. (Strathclyde is the second.) All successful students are eligible for admission to the Register of Chartered Librarians (ALA) after they have completed the prescribed period of practical experience.