We show that the Raman scattering technique can give complete structural information for one-dimensional systems, such as carbon nanotubes. Resonant confocal micro-Raman spectroscopy of an (n,m) individual single-wall nanotube makes it possible to assign its chirality uniquely by measuring one radial breathing mode frequency omega(RBM) and using the theory of resonant transitions. A unique chirality assignment can be made for both metallic and semiconducting nanotubes of diameter d(t), using the parameters gamma(0) = 2.9 eV and omega(RBM) = 248/d(t). For example, the strong RBM intensity observed at 156 cm(-1) for 785 nm laser excitation is assigned to the (13,10) metallic chiral nanotube on a Si/SiO2 surface.

Structural (n,m) determination of isolated single wall carbon nanotubes by resonant Raman scattering

Raman spectroscopy is one of the most extensively employed methods for the characterization of carbon nanotubes. In this review article, an overview about Raman spectroscopy as a tool for the characterization of functionalized single-walled carbon nanotubes (SWCNTs) is given. First, the relevant Raman modes in SWCNTs are introduced. Then, in a phenomenological approach, the effects that are observed for the individual modes in the Raman spectra are compiled and discussed. It is shown that special care has to be taken in order to separate the effects of functionalization, which are specific to a subset of the SWCNTs (metallic/semiconducting or diameter dependent), from changes in sample morphology or doping effects. Copyright © 2007 John Wiley & Sons, Ltd.

Raman spectroscopy of covalently functionalized single‐wall carbon nanotubes

Encyclopedia of the Sciences of Learning

Information systems strategic alignment---the fit between business strategic orientation and information systems (IS) strategic orientation---is an important concept. This study measured business strategic orientation, IS strategic orientation, and IS strategic alignment, and investigated their implications for perceived IS effectiveness and business performance. Analyses of data gathered in a mail survey of North American financial services and manufacturing firms indicated that 1) business strategic orientation, IS strategic orientation, and IS strategic alignment are modeled best by utilizing holistic, ‘systems’ approaches instead of dimension-specific, ‘bivariate’ approaches, 2) three generic IS strategic orientations can be detected, 3) user information satisfaction does not capture important strategic aspects of IS effectiveness, 4) IS strategic alignment is a better predictor of IS effectiveness than is strategic orientation, and 5) business strategic orientation, IS strategic alignment, and IS effectiveness have positive impacts on business performance.

Business strategic orientation, information systems strategic orientation, and strategic alignment : working paper

This article reviews recent advances on the use of Raman spectroscopy to study and characterize carbon nanostructures. It starts with a brief survey of Raman spectroscopy of graphene and carbon nanotubes, followed by recent developments in the field. Various novel topics, including Stokes–anti-Stokes correlation, tip-enhanced Raman spectroscopy in two dimensions, phonon coherence, and high-pressure and shielding effects, are presented. Some consequences for other fields—quantum optics, near-field electromagnetism, archeology, materials and soil sciences—are discussed. The review ends with a discussion of new perspectives on Raman spectroscopy of carbon nanostructures, including how this technique can contribute to the development of biotechnological applications and nanotoxicology.

Raman Studies of Carbon Nanostructures

Online businesses are increasingly investing in Big Data Analytics. Not only does it allow them to gain deeper insights into customer behavior and industry trends, but it also lets them make more accurate decisions to improve merchandising, marketing, customer retention, and every other aspect of their business. However, various problems may emerge particularly when the infrastructure of Big Data fails to perform optimally, hence leading to important intelligence and information to become unavailable or delayed. The essence of this study is not only to understand the benefits and challenges of applying Big Data Analytics but also to introduce a reference architecture as an optimum solutions to online businesses. The reference architecture represents the building blocks from which for every customer-specific situation an optimum solution can be designed by combining various technologies.

http://ijecm.co.uk/wp-content/uploads/2015/05/3560.pdf

Big data driven e-commerce architecture

The purpose of this paper is to explore the role of goal setting as contributing factor for eCommerce systems (ECS) success in small and medium enterprises (SMEs). Based on the literature review relative to eCommerce in SMEs, this research postulates that goal setting influence the success of ECS in SMEs. The success of ECS in SMEs is the dependent variable the dimensions of which are identified by using DeLone and McLean success model. The output result of this paper is a conceptual model identifying the relevant dimensions of both success and goal setting and the resultant hypotheses that require empirical research to validate the proposed model. INTRODUCTION While ECS can be regarded as one form of an IS [16], the concept of success is recognized as one of the problematic issues that can be interpreted in many ways Attempts to measure the success of information system (IS) with single or multiple variables have been the focus of many researchers. Very few SMEs actually undertake any formal measure of their ECS performance. In fact the literature does not present any concept of ECS success developed specifically for SMEs. DeLone and McLean [4] Conducted a comprehensive review of IS literature and proposed the concept of an IS success model which has been argued and validated by many researchers. The present study seeks to extend DeLone and McLean IS success model and adapt it for the SMEs setting by identifying and incorporating dimensions of success relevant to SMEs. There appears to be no such study conducted to examine the applicability of this model in an SME setting. However, DeLone and McLean [6] asserted that the selection of success measures should also consider the independent variables being researched, goal setting in this paper. Many researchers have suggested a variety of independent factors that influence the success of eCommerce in SMEs, yet few studies have addressed ones that are related with the success of ECS in SMEs In terms of their goals [23]. This have been investigated in terms of planning [20] and goal alignment [13] as a success factors of eCommerce implementation. This present paper refers ro these two terms as goal setting. The purpose of this paper is to explore the role of one organizational factor, namely goal setting for ECS success in SMEs. Thus, a research question can be articulated as “What is the contribution of goal setting for ECS success in SMEs”? This would help manager/owners assess their eCommerce initiatives by focusing on the dimensions of success for their ECS as identified in this study. ECS SUCCESS MODEL In attempting to structure the myriad of variables associated with the diversity of information systems. DeLone and McLean [4] conducted comprehensive review of IS literature in which they proposed the concept of the IS success model. Their work is still contributing toward a universal model, which many have employed when looking at information system performance [1; 21; 24]. Pitt et al [18] proposed a modification of this model to include a service quality component; Myers et al [17] suggested additional IS impact measures; [24] argued to exclude the usage from the model and used ‘net benefit’ in his characterization of the outcome. These modifications were endorsed by DeLone and McLean with an updated IS success model [5] and adapted the updated model to the measurement of eCommerce systems [6]. While the DeLone and Mclean framework is flexible the dynamics make it very difficult to operationalize its constructs. However, choice of the appropriate dimensions of the success constructs to be able better to realize benefits is a context dependent and “contingent on the objectives of the empirical investigation”. It is also “a function of the independent variable under investigation” [6]. That, makes it applicable for different domains. However for the purpose of this study we look at the profit based SME as the stakeholder of the ECS and the benefit accrued to that SME invested in the system from the perspective of owners /managers whom they ultimately determine the success of their venture. GOAL SETTING Goal setting serves the purpose of establishing a measure for evaluating the success of a business and sets priorities for its management. This will keep management focused on success and away from distractive activities that drain business resources and accomplish little [26]. Although setting up a goal may seem simple, but in precise terms is futile [27] unless all stakeholders are taken into consideration. It is a standard practice for SMEs to engage the service of an IT provider due to the lack of expertise and financial resources and by default, outsourcing their eCommerce strategies [2]. In doing so SMEs need to strategically align their ECS development with eCommerce strategies in synergy with the customer expectations. While every ECS is unique, it is imperative that it matches the well defined business’ goals, the well articulated IT/IS goals, and the well understood customers’ goals. In an eCommerce

The contribution of goal setting to the success of eCommerce systems among small and medium enterprises in New Zealand

Measurements that capture website performance have long enabled businesses to improve strategies and operations. For an eCommerce website, there exists a limited understanding on how performance is measured. Measuring the performance of a website has been proposed in many ways and various contexts over the past decade. The study presented in this article used the owner perspective to theoretically develop and empirically test measurement model of website performance. The results suggest that performance is a second order factor model. The first order factors of the model are termed usage, financial returns and owner satisfaction. The resulting measurements are framed as a tool for benchmarking the performance of the website as well as a foundation for operationalising the website performance construct.

/pdf/measuring-the-performance-of-ecommerce-websites-3rcvwcv1eo.pdf

Measuring the Performance of Ecommerce Websites

This research paper will attempt to assess the impact the coronavirus has had on the E-Commerce industry of the UAE. Previous literature has been reviewed to understand the scope of E-Commerce previously present in the UAE before the onset of the new novel coronavirus. Two time periods have been included in the regression analysis to develop a better perceptive of the E-Commerce industry before and after the spread of the infectious disease. Through our study, we were able to conclude a significant positive relationship in both periods. Coronavirus has positively affected the E-Commerce industry as more retailers and consumers have shifted onto online channels for their buying and selling activities. The latter part of this paper includes a discussion and special recommendation section to underline the current situation and how it can be improved.

/pdf/covid-19-impact-on-e-commerce-in-uae-4yl7igctv7.pdf

COVID-19 Impact on E-Commerce in UAE

AI Is disrupting almost every industry in every country and has been said to have ushered the fourth industrial revolution. The development of AI, however, has given rise to a new ethical, societal and legal challenges requiring governments of countries to develop a legal framework to address those concerns over this technology. This study investigate these challenges in the context of UAE. The study concludes that UAE is a pioneer in dealing with these issues crafting law that governs all side of the technology at the earliest possible introduction.

Ahmad Ghandour

Papers

Big data driven e-commerce architecture

The contribution of goal setting to the success of eCommerce systems among small and medium enterprises in New Zealand

Measuring the Performance of Ecommerce Websites

COVID-19 Impact on E-Commerce in UAE

Ethical Issues in Artificial Intelligence in UAE