Pilomatrix carcinoma of the lacrimal caruncle: a case report.

A 45-year-old man presented with a 3-month history of a mass located in the caruncle of his right eye. An incisional biopsy had been performed one month prior by another specialist, and the histopathology report showed basal cell carcinoma. The mass was completely excised with a 2 mm safety margin, and the large conjunctival defect was reconstructed with one sheet of amniotic membrane allograft. A histological diagnosis of pilomatrix carcinoma was established. To prevent recurrence after surgery, we added bevacizumab (25 mg/mL, 1.25 mg/mL per drop) eye drops four times per day for three months. At the one-year follow-up, the patient showed no evidence of local recurrence or distant metastasis after initial excision and remains under close follow-up. Pilomatrix carcinoma should be considered in the differential diagnosis of a caruncular mass

Role of Governance Infrastructure in Attracting FDI to Georgia

Many economists argue that FDI has a significant role for countries economic growth, especially, countries like Georgia. However,the question is how to attract FDI into our country. There are several factors which make economy attractive for foreigners.The purpose of this research is to focus on the role of governance infrastructure which is one of the most important fordeveloping nations. This is a relatively new term for Georgian economy, which contains of all regulations, legislation and legalsystems of the country. Thus, their importance will be investigated.The methods used for this research are survey, interview and some other observation on the operation of Georgianeconomy. The interview was conducted with Georgian expert in politics. Expert in economics was also asked to answerseveral questions. In addition, the Survey was applied to 60 people and as a result most of them agreed on the importanceof governance infrastructure, that it needs improvement and that it will definitely make Georgia more attractive country forpotential investors.In conclusion policy-makers should pay much attention to those institutions which can contribute more to the creation ofstable economic environment and investment environment. Improvement of governance infrastructure will definitely decreasethe risks for potential investors, increase their confidence in our country, and push them towards more investments, especiallywhen Georgia’s geographic location offers wide variety of spheres where foreigners can do business

Dynamics of Georgian mineral water market

The purpose of this research paper is to determine the volume of the production and market demand for Georgian mineral water, to identify competitiveness between producers, awareness among consumers and their demands on packaging and pricing. Also to study export climate and effects of political decisions on the Georgian mineral water market. The paper examines overall situation on Georgian mineral water mar- ket by survey and interviews. The analyzed results presented in this paper demonstrate that, Georgian mineral water market can be described as competitive, with variety of products, high quality and low prices. Mineral water is produced by both - low and high income consumers and identification of one brand to another, affects the way consumers behave in choosing drinks. Georgian Mineral water is highly demanded prod- uct in foreign markets as well, because of the competitive advantages it has. According to the study, Georgian mineral water market can be evaluated as fast growing sector of the country’s economy. Thus, the given industry creates many jobs that result in domestic economic growth

Experimental study on the nucleate boiling heat transfer characteristics of a water-based multi-walled carbon nanotubes nanofluid in a confined space

Experimental investigation of nucleate boiling heat transfer of a water-based multi-walled carbon nanotubes (MWCNTs) nanofluid in a confined space is presented in this study. First, the effects of four different surfactants on the stability of the nanofluids were investigated and the suitable surfactant gum acacia (GA) was selected for the boiling experiments. Then, the boiling experiments of the nanofluids with various volume fractions (0.005–0.2%) of the MWCNTs were conducted at a sub-atmospheric pressure of 1 × 10−3 Pa and the test heat fluxes are from 100 to 740 kW/m2. Furthermore, GA with four different mass fractions was respectively dissolved in the nanofluids to investigate the effect of the GA concentration on the boiling heat transfer. The effects of the heat flux, the concentrations of the MWCNTs and surfactants, the bubble behaviors and the surface conditions after the boiling processes have been analyzed. The results show that the MWCNTs nanofluid can enhance boiling heat transfer as compared to the base fluid. This is mainly caused by the nanoparticles deposition on the boiling surface result in increasing the surface roughness and reducing surface contact angle. It is also found that addition of GA can inhibit the deposition of the nanoparticles but may reduce the boiling heat transfer coefficient of the nanofluids. According to the experimental results, the maximum heat transfer coefficient enhancement ratio can reach 40.53%. It is also noticed that the heat transfer enhancement ratio decreases with increasing the heat flux at lower heat fluxes from 100 to 340 kW/m2 while it increases with increasing the heat flux at higher fluxes from 340 to 740 kW/m2. At the lower heat fluxes, the deposition layer increases the frequency of bubble formation and thus the boiling heat transfer is strengthened. While at the high heat fluxes, the increasing heat flux may strengthen the capability of the nanoparticles deposition and the disturbance of the nanoparticles and increase the enhancement ratio of heat transfer coefficient

Exploring Academic Stressors Related to Second Language Acquisition and Barriers of Turkish-International Graduate Students Studying Education in the Southeast United States

Many students around the world have a strong desire to study in the United States, and in recent years international students in the United States have enrolled at an all-time high. There is a significant need to learn more about these students\u27 needs and strategies to identify the most effective practices to improve their academic life and life quality. The demand for overcoming life challenges in a new country and achieve high academic performance with their second language creates high stress for these international students. One of the groups among these international students that has been understudied is the Turkish students. The purpose of this research is to explore the academic and second language-related stress of Turkish international students, in addition to investigating students\u27 self-reported stress management strategies. This study uses a case study methodology to thoroughly understand the impact of the second language of participants\u27 reported stress and how they manage their life and academic performance. The researcher collected interviews from three Turkish-International students who study in a graduate school in the US. The researcher conducted inductive coding and created themes from the qualitative data. The results of the study indicate that students experience challenges due to their second language which creates stressful situations. One of the most critical areas that participants emphasized is the difficulties that they experience while they speak. Participants indicated that the challenges of speaking tasks affect their self-confidence and they tend to speak up less. One of the other critical findings of the study that participants highlighted is that they need to spend more time studying just to be able to survive in a highly competitive academic life as it is challenging to comprehend content knowledge with a second language. The obligation of studying in long hours affects their social and family life. The researcher explored the coping mechanisms that participants found effective and a summary related to the COVID-19 pandemic and how it impacted these students\u27 stress

Analytical Nonlinear Distortion Characterization for Frequency-Selective Massive MIMO Channels

Nonlinear distortion stemming from low-cost power amplifiers may severely affect wireless communication performance through out-of-band (OOB) radiation and in-band distortion. The distortion is correlated between different transmit antennas in an antenna array, which results in a beamforming gain at the receiver side that grows with the number of antennas. In this paper, we investigate how the strength of the distortion is affected by the frequency selectivity of the channel. A closed-form expression for the received distortion power is derived as a function of the number of multipath components (MPCs) and the delay spread, which highlight their impact. The performed analysis, which is verified via numerical simulations, reveals that as the number of MPCs increases, distortion exhibits distinct characteristics for in-band and OOB frequencies. It is shown that the received in-band and OOB distortion power is inversely proportional to the number of MPCs, and it is reported that as the delay spread gets narrower, the in-band distortion power is beamformed towards the intended user, which yields higher received in-band distortion compared to the OOB distortion.Comment: This paper is presented in ICC 202

Migrant Ridesharing Drivers in San Francisco: A Case of Blocked Mobility?

Migrants have long turned to self-employment in host country labor markets due to not only racial and ethnic prejudices, but also issues of local language proficiency and lack of recognition of the academic degree from the sending country. The taxi industry, one particular occupational niche dominated by migrants, has long been studied by scholars. However, the industry has evolved into a newer and understudied form of transportation: ridesharing. This study argues that in the case of the ridesharing industry, drivers did indeed turn to the occupation because of factors such as insufficient English language level and foreign academic degrees, but also age and personal family matters. Participants were attracted to the ridesharing industry in large part because of the flexibility and level of compensation provided. As a whole, participants saw ridesharing as the best option available to them in an otherwise unsuitable labor market