Use of Emotions in Fake Review Detection

With the availability of information technologies, the number of online reviews is increasing day by day. As consumers utilize online reviews in their purchasing decisions, they need to know the genuineness of the reviews as non-genuine, i.e. fake, reviews result in both monetary and time losses. Furthermore, businesses also suffer financial loss due to fake reviews and face challenges in retaining consumers\u27 trust. Recent studies show that almost one-third of online reviews are fake, and the consumer spending due to fake online reviews is $152 billion. As a result of its huge impact, it is vital for organizations, especially online review platforms, to mitigate fake reviews. In this study, we concentrated on the review content, and by utilizing text analytics, we proposed utilizing the emotional content of online reviews in fake online review detection. We believe such utilization will enable organizations to increase the efficiency of fake review detection systems

Third party involvement process to the Nagorno-Karabakh conflict

This thesis explores the third parties involvement process in conflicts, particularly in the example of the Conference on Security and Cooperation in Europe (CSCE)’s involvement process in the Nagorno-Karabakh conflict. The collapse of the bipolar system and demise of the Soviet Union opened a space to the regional arrangements. In this new environment, the CSCE embarked on new efforts of the mediation of the Nagorno-Karabakh conflict. This is because the bloody conflict between Armenians and Azerbaijanis was threatening the stability and security in the European region and the CSCE was the most appropriate mediator due to its role between East-West dialogues. The chapters of this study evaluate (1) the situation between Armenians and Azerbaijanis on the ground and their arguments on this conflict, (2) the changing international system, particularly the increasing discourse on the region, regionalism and regional arrangements/organizations ideas in the 1980s and 1990s and the institutional evolution of the Conference on Security and Cooperation in Europe (CSCE) from a conference to a regional organization, especially in the area of hard options such as peacekeeping forces deployment or military tasks, (3) the legal framework of the regional organizations’ mediation efforts in the conflicts, the origin of their mandate and legitimacy, and (4) the first case of CSCE’s peacekeeping forces deployment in the Nagorno-Karabakh conflict and the approaches of Azerbaijan and Armenia as well as Russia and the United States to this deployment. The institutional evolution of the CSCE and the Nagorno-Karabakh conflict coincided, especially between 1988- 1994. I argue that the organization was not mature enough to deal with this conflict because it lacked of necessary hard options to deploy peacekeeping forces and force Armenia and Azerbaijan to consent its decisions

On the Usefulness of Online Review Valance

Online reviews are posted by consumers to inform others about their post-usage attitude towards the focal product/service. Often two-sided reviews that provide both pros/cons of a product/service are considered more informative than one-sided reviews. While research has looked into the usefulness of positive versus the negative aspects of the two-sided reviews, the findings are inconclusive. Some studies find negative aspects of the two-sided reviews to be more useful than positive aspects, some find the reverse to be true, and yet there are research findings that show both positive and negative aspects are equally useful. As a result, online review platforms are at loss to deal with the effects of positive/negative aspects of the reviews. Drawing on the Evaluative Space Model, our empirical study of 4705 restaurant reviews from TripAdvisor show that usefulness of reviews depends on how the attitudes of the receivers of the reviews are tilted towards positive or negative aspects of the focal product/service. And that the relationship between review usefulness and reviewers’ attitude is nonlinear

Molecular weight dependent antistaphylococcal activities of oligomers/polymers synthesized from 3-aminopyridi

The main aim of this study was to investigate the relationship between molecular weight and the antistaphylococcal activity of oligomers/polymers synthesized from 3-aminopyridine. Different oligomers/polymers were synthesized from 3-aminopyridine by changing the oxidative polycondensation reaction conditions. They were characterized by size exclusion chromatography and their antibacterial activities were compared by employing standardized susceptibility assays. The obtained experimental results demonstrated that 3-aminopyridine had no antistaphylococcal activity. However, as a result of polymerization, strong antistaphylococcal activity was obtained. Oligomers/polymers synthesized from 3-aminopyridine had varying degrees of antistaphylococcal activity and the maximum activity was obtained from relatively very short oligomers. It was therefore concluded that polymerization of 3-aminopyridine is required for antistaphylococcal activity and strength of this activity depends on the molecular weights of the synthesized molecules

Lagrangian based mathematical modeling and experimental validation of a planar stabilized platform for mobile systems

Typical operating conditions for mobile sensor systems, and in particular mobile robots, exhibit a wide range of mechanical disturbances due their ego-motion. Sensor systems mounted on these mobile platforms often suffer to varying degrees from these disturbances. The quality of acquired data is degraded as a result. For instance, the quality of captured video frames from an onboard camera greatly depends on the angular velocity of the body on which the camera is mounted. Motion blur degradation results if large angular motions are present. In order to compensate for such disturbances, stabilization platforms are used. A common approach is measuring body movements using inertial sensors and attempting their cancellation with actuators and control systems. Design of high performance control systems often requires analytical system models. In this article, a planar stabilization platform is considered, to develop and study its kinematic and simple-to-complex dynamic model. The mathematical derivation of the model is presented with and without neglect of the actuator mass components as well as friction effects. This is followed by the comparative validation of these model alternatives against a realistic numerical model fitted to physical experimental data. The results demonstrate that the analytical model, in particular with the actuator mass and friction components included, provides a high degree of fit to the actual behavior

Ultralow Threshold One-Photon- and Two-Photon-Pumped Optical Gain Media of Blue-Emitting Colloidal Quantum Dot Films

Colloidal quantum dots (QDs) offer advantageous properties as an optical gain media for lasers. Optical gain in the QDs has been shown in the whole visible spectrum, yet it has been intrinsically challenging to realize efficient amplified spontaneous emission (ASE) and lasing in the blue region of the visible spectrum. Here, we synthesize large-sized core/gradient shell CdZnS/ZnS QDs as an efficient optical gain media in the blue spectral range. In this Letter, we demonstrate for the first time that two-photon-absorption-pumped ASE from the blue-emitting QD is achievable with a threshold as low as 6 mJ/cm(2). Utilizing these QDs, we also report one-photon-absorption-pumped ASE at an ultralow threshold of similar to 60 mu J/cm(2), which is comparable to the state-of-the-art red-emitting QD-based gain media. This one-photon-pumped ASE threshold is an order of magnitude better than that of the previously reported best blue-emitting QD-based gain media