Interactive Mining of Strong Friends from Social Networks and Its Applications in E-Commerce

Social networks are generally made of individuals who are linked by some types of interdependencies such as friendship. Most individuals in social networks have many linkages in terms of friends, connections, and/or followers. Among these linkages, some of them are stronger than others. For instance, some friends may be acquaintances of an individual, whereas others may be friends who care about him or her (e.g., who frequently post on his or her wall). In this study, we integrate data mining with social computing to form a social network mining algorithm, which helps the individual distinguish these strong friends from a large number of friends in a specific portion of the social networks in which he or she is interested. Moreover, our mining algorithm allows the individual to interactively change his or her mining parameters. Furthermore, we discuss applications of our social mining algorithm to organizational computing and e-commerce     

Determinants of employee willingness to use feedback for performance improvement: cultural and organizational interpretations

This study was designed to identify determinants of employee willingness to use feedback for performance improvement. The proposed determinants included objectives of appraisal, supervisor's knowledge of subordinate's job, agreed plan for performance improvement, trust in supervisor and perceived fairness and accuracy of performance evaluation. Data were collected in two phases. The first phase consisted of a questionnaire survey among 100 Hong Kong Chinese employees working in public and private sector organizations. Regression analysis of questionnaire data indicated that agreed plan for performance improvement and perceived fairness and accuracy of performance evaluation had significant positive effects on employee willingness to use performance feedback. In the second phase, focus group interviews were held to triangulate survey findings. Interview data suggested that Chinese cultural characteristics of paternalism and personalism influenced the underlying dynamics of the evaluation process. Findings are interpreted in the context of employees cultural and organizational background.     

Culture and business networks: International business negotiations with Arab managers

The Arab world is an important economic region due to its natural resources, geographic location and political influence. However, limited attention has been paid to researching and understanding the way business is conducted in this region. We address this gap by exploring the key socio-economic, cultural and political factors that influence the negotiation process between Arab and non-Arab managers. Semi-structured interviews were conducted with 30 Arab managers in Lebanon with experience in international business. The findings of the study show that: Arab negotiators place emphasis on building relationships and use referent power (wasta); the political uncertainty influences the bargaining power of the Arab negotiators and political volatility in the country influences the Arab managers’ use of time during negotiations.     

Macroeconomic consequences of increased productivity in less developed economies

This paper examines the impact of improvements in productivity on prices, output, the real wage rate and the balance of payments. Within the context of the model used in this paper, an improvement in productivity can take two alternative forms: (1) a cost saving for a given output and (2) an increase in production without a direct decrease in employment. The results presented are based on a simple model of a small open economy that includes some key features of less developed economies. It is shown that, in the presence of monetary and fiscal restraints, an improvement in productivity leads to increases in output, employment and the real wage and the effect on the balance of payments, in the short and the medium runs, is also positive. We find that whether or not improvement in productivity is import saving plays a crucial role in both comparative static and simulation exercises.     

The Balance-of-Payments Constraint and Growth Rate Differences Among African and East Asian Economies

The balance-of-payments constrained growth rate model postulates that the balance of payments position of a country is the main constraint on economic growth, because it imposes a limit on demand to which supply can adapt. This paper applies the model to a sample of African and Asian countries aiming at explaining growth rate differences among these countries by quantifying the individual and combined contributions of export growth, capital flows and changes in the terms of trade in each country’s case. The results obtained give support to the argument that, in contrast to Asian countries, the low growth rates in African countries are explained by low export expansion relative to the imports required for the processes of growth and development. This poor performance of African countries is attributed to the low magnitudes of their dynamic Harrod foreign trade multipliers, which are determined by the respective income elasticities of demand for exports and imports. It is asserted that the low dynamic Harrod foreign trade multipliers of African countries are direct products of their excessive dependency on the exportation of primary products. — Le modèle de taux de croissance contrariés par la balance des paiements postule que la position de la balance des paiements constitue le principal obstacle à la croissance économique d’un pays, dans la mesure où elle impose une limite à la demande à laquelle l’offre pourrait s’adapter. Le présent article applique ce modèle à un échantillon de pays africains et asiatiques afin d’expliquer les différences de taux de croissance entre ces pays, en quantifiant la contribution individuelle et collective de facteurs tels que la croissane des exportations, les flux de capitaux et la variation des termes de l’échange dans chaque pays. Les résultats obtenus confortent l’argument selon lequel, contrairement à ce qui se passe dans les pays asiatiques, la modicité des taux de croissance dans les des pays africains s’explique par la faible expansion des exportations par rapport aux importations nécessaires pour assurer le processus de croissance et de développement. Cette performance médiocre des économies africaines est imputée à l’insuffisance de leur multiplicateur dynamique du commerce extérieur de Harrod, qui est déterminé par leurs élasticités-revenu de la demande d’exportations et d’importations. Cette insuffisance est elle-même une conséquence directe de la dépendance excessive de ces pays à l’égard des exportations de produits de base.     

Green Consumerism and Ecolabelling: A Strategic Behavioural Model

The ethos of “green” marketing is to affect tastes and perceptions so that those individuals for whom the attribute of environmental‐friendliness is significant can signal this preference by choosing the “green” alternative. This paper presents a strategic behavioural model of interactions between two agents, a firm and consumer, under conditions of incomplete information. The outcome of the model is that, unless some restrictive and (arguably) unrealistic conditions apply, some proportion of “green” marketing campaigns will be misleading; “green” marketing is not restricted to “green” products, and “green” consumers only adapt their purchasing habits some of the time. Ecolabelling schemes can be used as a means of ameliorating this inefficiency in information‐transfer. Whether state intervention to make ecolabelling mandatory for “green” products is welfare‐improving depends on the balance between the deadweight losses from the process and the gains in terms of facilitating the expression of “green” preferences.     

Engineered nanomaterials: risk perception,regulation and insurance

Concerns surrounding the health risk of engineered nanomaterials, effective regulation and the lack of specifically tailored insurance products for the nanotechnology sector are putting the industry’s long-term economic viability at risk. From the perspective of the underwriter, this article speculates on the relationship between risk perception, regulation and insurability. In the nanotechnology sector, regulators are currently failing to keep pace with innovation, and insurers generally lack guiding principles for underwriting occupational risk from nanomaterial exposure. Such vulnerabilities when combined with misguided risk perceptions can lead to the overpricing of risk transfer and ill-conceived regulatory initiatives, thus potentially exhausting resources and stifling innovation in the sector. In the absence of well-developed regulatory protocols, the insurance industry has, and will continue, to occupy a key role as an effective lobby in terms of improved risk management practice. We suggest that the insurance industry will increasingly rely on control banding frameworks and ‘risk mitigation at source’ methods developed in conjunction with their clients to manage severe acute diversifiable risks. Long tail risk will continue to represent a serious challenge to insurers and regulators. In the meantime, insurers will have to bridge their current needs with improvised solutions. As an example of one possible solution, we outline a framework that utilizes financial instruments to hedge an insurer’s exposure to uncertain estimates of these long-term risks.     

Effects of COVID-19 in E-learning on higher education institution students: the group comparison between male and female

Quality & Quantity - In response to the emerging and ever solution to the COVID-19 outbreak. This study proposes a theoretical framework based on literature and model to determined E-learning...     

Is money an omitted variable in the production function? Some further results

In recent years, numerous studies have emphasized the role of real balances in the production function in terms of money being useful: as an intermediate good; as liquid reserves for investment; and also serving as a link between aggregate supply and the nominal interest rate. In this paper we report new Canadian empirical evidence regarding the important role of money in the production process of aggregate manufacturing industries based on a flexible translog cost function approach. In general, our results support the hypothesis that money is an important factor in the production function and that there are potential supply side effects of a change in the interest rate.