Inferring Mood-While-Eating with Smartphone Sensing and Community-Based Model Personalization

The interplay between mood and eating has been the subject of extensive research within the fields of nutrition and behavioral science, indicating a strong connection between the two. Further, phone sensor data have been used to characterize both eating behavior and mood, independently, in the context of mobile food diaries and mobile health applications. However, limitations within the current body of literature include: i) the lack of investigation around the generalization of mood inference models trained with passive sensor data from a range of everyday life situations, to specific contexts such as eating, ii) no prior studies that use sensor data to study the intersection of mood and eating, and iii) the inadequate examination of model personalization techniques within limited label settings, as we commonly experience in mood inference. In this study, we sought to examine everyday eating behavior and mood using two datasets of college students in Mexico (N_mex = 84, 1843 mood-while-eating reports) and eight countries (N_mul = 678, 329K mood reports incl. 24K mood-while-eating reports), containing both passive smartphone sensing and self-report data. Our results indicate that generic mood inference models decline in performance in certain contexts, such as when eating. Additionally, we found that population-level (non-personalized) and hybrid (partially personalized) modeling techniques were inadequate for the commonly used three-class mood inference task (positive, neutral, negative). Furthermore, we found that user-level modeling was challenging for the majority of participants due to a lack of sufficient labels and data from the negative class. To address these limitations, we employed a novel community-based approach for personalization by building models with data from a set of similar users to a target user

Workplace Safety and Industrial Accidents in Korea: Forecasting Fatalities for 2018-2019

Workplace safety is every workers’ basic human right that have to be exercised for the well- being and survival of the employees. Among OECD countries, Korea has the highest fatality rate in workplace. Numerous studies have been conducted on this issue but majority of them were focused on diagnosis of the causes only after the accidents occur. This study analyzes historical workplace fatality data to forecast the industrial accident patterns of the upcoming two years, so that preventive measures to decrease fatality in workplace can be discussed before they happen. Four different forecasting methods are applied and decomposition method produce the least amount of error terms. Result of analysis shows that, during 2018 and 2019, even though there will be a very slight decrease, patterns of industrial accident in Korea are expected to remain similar with previous years. Discussion on more initiatives for accelerating the decreasing trend of industrial accidents in workplace is presented.Keywords: Workplace safety, occupational accident, forecasting fatality of industrial accident, industrial accident in Korea, labor force management in Korea</p

Patterns of Workplace Safety and Fatalities in Korea: Forecasting 2015-2016

Workplace safety is an issue that threatens not only the well-being of a person but also the very existence of them. Among OECD countries, Korea has the highest fatality in workplace.Literature on this issue has been focused on diagnosis of the causes only after the accidents occur. Instead of using a retrospective perspective, this study analyzed historical data to forecast the future accident patterns so that effective alternatives to decrease fatality in workplaces can be discussed before they happen. Four different forecasting methods were applied and regression analysis produced forecasting values with the least amount of error terms. Analyses predict that industrial accidents in Korea during 2015 and 2016 will continue their persistent pattern and only experience a gradual decrease. More initiatives for accelerating the decreasing trend of industrial accidents in workplaces need to be taken. Keywords : Workplace Safety, Workplace Accident, Forecasting Fatality of Industrial Accident,Industrial Accident in Korea, Labor Force Management in Korea</p

Paternalistic Leadership in Korean Small and Medium Scale Enterprises: Applicability of a Turkish Paternalism Scale

Social and cultural exchange between Korea and Turkey has been rapidly increasing and is expected to be accelerated for the future. Especially business exchange is interest of many people in both countries. This paper aims to provide insights for business people in Korea and Turkey to understand each country’s cultural aspects. Among different perspectives, paternalism is focused in the study. Paternalism is an important intersection of both cultures but it did not receive much attention. Even though both Turkish and Korean leaders are paternalistic, the origin of the characteristic is based on different background. The current studies of paternalism in Korea are based on Confucianism and economic crisis whereas those of Turkey are based on nomadic history, military Coup d'Etat, complicated bureaucracy, and economic instability. Using a paternalism scale developed with Turkish sample, this study measured Korean employees’ perception on paternalism and paternalistic leadership. The results showed that the scale is applicable in Korean organizations as well

Korea's Drinking Culture: When an Organizational Socialization Tool Threatens Workplace Well-being

According to recent studies, Koreans consume the most amount of alcohol in the world. Alcohol consumption is not only a matter of taste but also a patr of the socialization process in Korean culture. Moreover, this aspect of the culture affects organizations, and drinking plays an impoitant role in workplace socialization Hoesik or dining together is one of the most important forms of socialization in Korean organizations. During drinking sessions, employees encourage each other to consume alcohol as they share ideas and build social networks. However, frequent hoesik sessions and a "bottoms-up" drinking culture indicate that Koreans often consume hazardous amounts of alcohol. Excessive alcohol consumption threatens not only the well-being of employees but also the sustainability of organizations. This study discusses organizational socialization in Korea, the role of hoesik as an important organizational socialization activity, and the effects of excessive alcohol consumption on employees. There is a growing need to improve the well-being of Korean employees, and stopping heavy alcohol consumption is an important step toward achieving this need

Investigating Healthcare Management System and its Stakeholders: A Case Study of Korea’s MERS Outbreak

Recently, there is a worldwide increase in the epidemic disease outbreaks. Whenever these emergencies happen, they challenge the health systems and their procedures. Many of the established systems fail in the process and precious time is lost while trying to contain the diseases. In 2015, it took more than two months to contain Middle East Respiratory Syndrome outbreak in Korea. Considering the fact that Korea’s geographical location allows travel abroad only by air or sea, control of a Middle East origin disease outbreak should have been easier. However, examination during the outbreak period shows that the country was not prepared for emergency management especially in terms of healthcare management culture. In this study, we present problems and difficulties Korean healthcare organizations confronted during the outbreak and critically review management of Korean healthcare organizations from stakeholder theory’s point of view. By taking one of the biggest hospitals in Korea as a representative case, it can be seen that Korean healthcare organizations do not fulfill accountabilities toward their stakeholders and it led the whole country into chaos both socially and economically. Analysis of the case shows that Korean healthcare organizations’ great focus on financial profit and their corporate structures caused a failure in protecting the hospitals’ main ethical priority: patients’ welfare. Failures of the system show that evaluations of healthcare organization should be solely based on healthcare quality provided by the organization, not by the name value of any related corporations.</p

Korea’s Drinking Culture: When an Organizational Tool Threatens Workplace Well-being

According to recent studies, Koreans consume the most amount of alcohol in the world. Alcohol consumption is not only a matter of taste but also a part of the socialization process in Korean culture. Moreover, this aspect of the culture affects organizations, and drinking plays an important role in workplace socialization. Hoesik or dining together is one of the most important forms of socialization in Korean organizations.During drinking sessions, employees encourage each other to consume alcohol as they share ideas and build social networks. However, frequent hoesik sessions and a “bottoms-up” drinking culture indicate that Koreans often consume hazardous amounts of alcohol. Excessive alcohol consumption threatens not only the well-being of employees but also the sustainability of organizations. This study discusses organizational socialization in Korea, the role of hoesik as an important organizational socialization activity, and the effectsof excessive alcohol consumption on employees. There is a growing need to improve the well-being of Korean employees, and stopping heavy alcohol consumption is an important step toward achieving this need.Keywords: Organizational socialization • Hoesik • Drinking culture in Korea • Employee well-being • Work–life balance</p

EVALUATING THE INSTRUCTOR EFFECTIVENESS: A TURKISH BUSINESS FACULTY EXAMPLE

In light of recent developments in the educational system in Turkey, we aimed to investigate students’ evaluation on teaching effectiveness in business school. We attempted to learn the characteristics students consider when they evaluate overall performance of instructors and the factors that influence the students when they appraise the instructors and their courses. In our study, we attempted to draw attention to a verified multidimensional measure of teaching evaluation. For this purpose, Students’ Evaluation of Teaching Effectiveness Rating Scale (SETERS) was used in a business faculty in Turkey. Findings show that students consider “effective knowledge delivery” and “communication skill” as important aspects of a successful instructor.Keywords: Business Education, Student Evaluation, Teaching Effectiveness in Business School, Educational Research, Student Characteristic.ÖzTürk eğitim sistemindeki son gelişmeler ışığında, “etkin öğretim” ve “öğrencilerin değerlendirmesi ile etkin öğretim” kavramlarını bir işletme fakültesi bağlamında araştırmayı amaçladık. Eğitimcilerin genel performansını değerlendirmek amacı ile öğrencilerin ne tür özellikleri dikkate aldığını; eğitimcillerin genel performansını ve derslerini Çalışmamızda, “Student’s Evaluation of Teaching Effectiveness Rating Scale” (SETERS), öğretim değerlendirme üzerine uluslararası boyutlu bir ölçek, Türkiye’deki bir üniversitede, işletme fakültesi altında ele alınmıştır. Ulaşılan bulgular, öğrencilerin “etkin bilgi aktarımı” ve “iletişim becerisi” özelliklerini etkin bir eğitimcide olması gereken önemli unsurlar olarak nitelendirdiklerini göstermektedir.Anahtar Kelimeler:&nbsp;İşletme Eğitimi, Öğrencilerin Öğretim Üyesi Değerlendirmesi, İşletme Yönetiminde Öğretim Etkinliği, Eğitim Araştırmaları, Öğrenci Karakteristikleri</div

Do Day-traders Destabilize the Market? The Case of the KOSPI200 Futures Market

a We analyze the trading records of 25 day-traders from a brokerage firm to explore how day-traders trade and how their trades affect futures prices. We find evidence that day-traders herd and follow positive feedback trading strategies. Day-traders trade with positive feedback within 3 minutes before they place a buy or a sell order. Even though day-traders are often blamed to destabilize the financial market, neither herding nor positive feedback trading necessarily destabilize prices. When we investigate the impact of heavy volume of orders by day-traders on futures prices during the day, no convincing evidence is found that day-traders destabilize prices in the financial markets. On the contrary, they quickly catch up the signal of price changes and spread the information by placing sell or buy orders