Miracle-dz/UniFAR-FTUs huggingface dataset:
Theoretical and Experimental Investigation of the Antioxidation Mechanism of Loureirin C by Radical Scavenging for Treatment of Stroke

Recent pharmacological studies have shown that dragon’s blood has an anti-cerebral ischemia effect. Loureirin C (LC), a kind of dihydrochalcone compound in dragon’s blood, is believed to be play an important role in the treatment of ischemia stroke, but fewer studies for LC have been done. In this paper, we report the first experimental and theoretical studies on the antioxidation mechanism of LC by radical scavenging. The experimental studies show that LC has almost no effect on cell viability under 15 μM for the SH-SY5Y cells without any treatments. For the SH-SY5Y cells with oxygen and glucose deprivation-reperfusion (OGD/R) treatment, LC increased the viability of SH-SY5Y cells. The results of 2′,7′-Dichlorodihydrofluorescein diacetate (DCFH-DA) and MitoSox Red experiments indicate that LC is very efficient in inhibiting the generation of the intracellular/mitochondrial reactive oxygen species (ROS) or removing these two kinds of generated ROS. The density functional theory (DFT) calculations allowed us to elucidate the antioxidation mechanisms of LC. Fukui function analysis reveals the radical scavenging of LC by hydrogen abstraction mechanism, the complex formation by e-transfer, and radical adduct formation (RAF) mechanism. Among the H-abstraction, the complex formation by e-transfer, and radical adduct formation (RAF) reactions on LC, the H-abstraction at O-H35 position by OH• is favorable with the smallest energy difference between the product and two reactants of the attack of OH• to LC of −0.0748 Ha. The bond dissociation enthalpies (BDE), proton affinities (PA), ionization potential (IP), proton dissociation enthalpy (PDE), and electron transfer enthalpy (ETE) were calculated to determine thermodynamically preferred reaction pathway for hydrogen abstraction mechanism. In water, IP and the lowest PDE value at O3-H35 position are lower than the lowest BDE value at O3-H35 position; 41.8986 and 34.221 kcal/mol, respectively, indicating that SEPT mechanism is a preferred one in water in comparison with the HAT mechanism. The PA value of O3-H35 of LC in water is −17.8594 kcal/mol, thus the first step of SPLET would occur spontaneously. The minimum value of ETE is higher than the minimum value of PDE at O3-H35 position and IP value, 14.7332 and 22.4108 kcal/mol, respectively, which suggests that the SEPT mechanism is a preferred one in water in comparison with the SPLET mechanism. Thus, we can draw a conclusion that the SEPT mechanism of is the most favorite hydrogen abstraction mechanism in water, and O-H35 hydroxyl group has the greatest ability to donate H-atoms.
Retention Strategies for Oil and Gas Industry Managers

Retention Strategies for Oil and Gas Industry Managers by Faye Gerard MBA, University of Phoenix, 1999 BS, Tuskegee University, 1992 Doctoral Study Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Business Administration Walden University August 2019 Abstract The turnover cost of specialized employees in the oil and gas industry can exceed 400%The turnover cost of specialized employees in the oil and gas industry can exceed 400% of an employee’s annual salary. The purpose of this multiple case study was to explore successful strategies that oil and gas company managers used to retain specialized employees. The specific population for the study was 8 managers from 4 oil and gas companies in a metropolitan city in the southern United States, which included 5 hiring managers and 3 engineering managers who had demonstrated success in retaining specialized employees. The conceptual lens used in this research study was the job embeddedness theory. Study data were collected through semistructured interviews, observations of participants’ nonverbal cues, a review of company documents, and organizational websites. The interview data were analyzed using Yin’s 5 steps for qualitative data analysis. The analysis resulted in 3 themes: (a) leadership engagement improved specialized employee retention, (b) flexibility through work–life balance improved specialized employee retention, and (c) monitoring and assessing retention through research tools and data analysis improved specialized employee retention. The implications of this study for positive social change include the potential to provide successful strategies for oil and gas company managers to retain specialized employees, which may contribute to improving promotion from within the oil and gas industry, reducing the study location area unemployment rates, and improving local job economies. Retention Strategies for Oil and Gas Industry Managers
The impact of enterprise size on the profitability of agricultural enterprises in the Republic of Serbia

The size of the enterprise is one of the most important determinants of the profitability of the enterprise. Some domestic and numerous foreign authors have tried to point out the impact that the size of the enterprise has on profitability. The results of these surveys have been contradictory, namely, some surveys have shown that larger enterprises are more profitable, some that smaller enterprises are more profitable, and some studies have indicated that the size of the enterprise has no impact on profitability. These contradictory conclusions led the authors of this paper to investigate the impact of enterprise size on profitability. This survey used data from regular financial statements for 121 agricultural enterprises for the period from 2014 to 2017. The rate of return on assets (ROA) was used as a measure of the profitability of agricultural enterprises, while the size of each enterprise was taken from the official statements of these enterprises according to the Company Classification Act. The results of the research have shown that larger enterprises were more profitable compared to small and medium-sized enterprises, but that this difference in performance was not statistically significant. It is a general conclusion that the size of the enterprise does not have a statistically significant impact on the profitability of the sampled agricultural enterprises.
Impacts of Coffee Shop Companies’ Mecenat Activity on Identification, Corporate Image, Love Mark and Loyalty

This study would investigate the impacts of coffee shop companies’ mecenat activity on identification, corporate image, love mark and loyalty. For sampling, an investigator who visited the coffee shops in person conducted surveys with customers. 800 copies were distributed for 11 days from May 23 through June 2, 2018, and excluding unreliable questionnaires from the collected questionnaires, 711 copies were used in the final analysis. As a result of the analysis, it turned out that the higher social contribution, purity, public interest and preference, the higher identification became. Also, the higher social contribution, public interest and preference, the higher corporate image became. On the other hand, it turned out that purity had a negative (-) impact on the corporate image. It turned out that purity and preference had positive impacts on the love mark, while did not affect social contribution, while public interest had a negative (-) impact on that. It turned out that identification had a positive impact on the corporate image, and identification and corporate image had positive impacts on the love mark. Also, identification, corporate image and love mark had positive impacts on loyalty. It is expected that the above research result would provide practical implications for coffee shop companies’ marketing techniques in the future, and further, it is judged that it would play a positive role in the quality of life of consumers who experience coffee shop companies’ mecenat activity. ■ keyword :∣Coffee Shop∣Identification∣Mecenat Activity∣Corporate Image∣Love Mark∣ 접수일자 : 2018년 08월 17일 수정일자 : 2018년 08월 29일 심사완료일 : 2018년 08월 29일 교신저자 : 변광인, e-mail : big2011@yumail.ac. kr 커피전문점 기업의 메세나 활동이 동일시, 기업이미지, 러브마크, 충성도에 미치는 영향 483
Why Do Institutional Investors Oppose Shareholder Activism? Evidence from Voting in Proxy Contests

This paper documents significant heterogeneity in institutional investors' support for shareholder activism in proxy contests and examines the following question: why do institutional shareholders frequently vote against activists when the activists’ actions increase the value of target firms? I propose that the voting decisions of institutional investors depend on the effect of shareholder activism on the return of the institutions’ combined shareholdings in both targets and their rival firms. Because institutions underweight target firms and activism could adversely affect the values of rival firms, institutional investors often lack incentives to support activists when gains on targets are diluted or offset by losses on rival firms. Using hand-collected data of mutual and pension fund voting in proxy contests, I find evidence that institutions that benefit less from activism events are less likely to support the activists, even when the activist’s effect on the target firm’s stock price is positive. Furthermore, when target firms do not have publicly-traded competitors, institutional investors are more likely to support activists. The evidence is consistent with the hypothesis that institutional investors’ portfolio returns explain whether or not they support activists.
HR Practices: A Source of Sustainable Competitive Advantage or Competitive Parity – A Systematic Literature Review

High Performance Work Practices or High Commitment Work Practices in HRM are often said to be a potential source of sustainable competitive advantage. However, some researchers have questioned that notion. Therefore, the objective of this paper is to review and analyze relevant literature to determine whether the HR practices can be considered as a real source of sustainable competitive advantage. This study followed the Systematic Literature Review method. This paper analyzes theoretical base for such claim as well as available empirical evidences and suggests that HR practices (often called as High Performance Work Practices) are more likely to be a source of competitive parity than a source of sustainable competitive advantage. The major significance of this paper is that it addresses a key question within Strategic Human Resource Management: whether HR practices can be considered as a source of sustainable competitive advantage. Further, this may be the first to discuss HR practices as a source of competitive parity. It also highlights research gaps in the area of the relationship between HRM and firm-performance.KeywordsHR practices; Sustainable Competitive Advantage; Competitive Parity; HR and firm-performance relation; High Performance Work Practices
Analysis of the Importance Degree and Performance of Internet Service Providers in Makassar City

This study aimed to analyze the customer experience seen from the level of actual performance and the level of importance of services provided by internet service providers PT. XYZ in Makassar City. Variables and attributes issued by TM Forum GB 912 consisting of Customer Management, Fulfillment, Assurance, and Billing, are used to analyze the performance provided by customer service in the field. The analysis technique will be carried out using the Importance Performance Analysis and Customer Satisfaction Index consisting of quadrant analysis and gap analysis used to investigate customer satisfaction and identify variables whose performance is deemed to need improvement. Data were collected using a platform-based questionnaire application from 100 respondents selected using random sampling techniques. The results showed that customers were satisfied with the performance and quality of services provided. The customer satisfaction index value obtained by CSI analysis shows a value of 82.006%. In conclusion, that the Fulfillment variable is a service variable that is considered the most important customer and requires improvement because its performance is still relatively low. While the variables considered good and need to be maintained are the Billing variable. Other service variables are sorted based on priority of improvement in a row, namely Fulfillment, Customer Management, and Assurance.
Frontal and etabolic alar Depression

The authors investigated brain glucose utilization using positron emission tomography (PET) in I2 normal volunteers and 12 unipolar unmedicated depressed patients (six endogenous; six nonendogenous) following injection of [18F@wro-deoxyglucose (FE). Compared by analyses of variance, absolute and relative regional glucose metabolic rates appeared different in depressed patients and control subjects, especially in parietal andfrontal lobes. In patients with unipolar depression, metabolic rates were increased in the orbital part of the frontal lobe and decreased in a frontal dorsolateral area. The metabolic supero-basal gradient calculated in the frontal cortex was signi$cantly lower in depressed patients than in normal subjects. Decreased glucose metabolism was also observed in the parietal cortex of depressed patients. No differences in glucose metabolic rates have been detected berneen endogenous and nonendogenous patients. No cfi*-a “. ,&ion has been found between the metabolic data and the Hamilton Rating Scale.
Regional Autonomic Contribution in Encouraging MSMEs Growth in City of Kediri, East Java, Indonesia

Regional autonomy has an important role in terms of providing local policies and regulations on the sustainability of the MSMEs sector. The existence of regional policies through good decentralization will provide progress for the people's economy. In the last 10 years since 2009-2019, several studies conducted in Kediri City as one of the regions of regional autonomy showed that most of the problems that arose in an effort to empower MSMEs from 4 main aspects namely, 1) internal MSMEs risk problems, 2) the risk of uncertainty or business climate, and 3) dependence on natural resources, and 4) the role of local government. To better understand the root causes and contribute to problem solving through strategy management, researchers use literature studies. Literature studies are expected to provide a clear picture of this. The results revealed that the contribution of regional autonomy in encouraging the growth of MSMEs can be done through 6 strategic indicators namely business capital, business climate, business protection, training and the establishment of special institutions, promotion and the economy is 'green'.
Accessibility and Technology in Smart City Construction

Population growth resulting from the urbanization process without proper planning has generated a number of social problems in cities, such as acess to housing, violence, unemployment and social exclusion. In this context, accessibility issues emerge prominently, mainly considering the increase in the awareness of people for equal rights. The use of technology provides a revision of this problem, helping not only in issues such as accessibility, but above all in the sense of making cities more human and intelligent. From this context, this work aimed to construct a technological artifact to mitigate the problem and propagate information about accessibility. The fundamentals are based on crowdsensing concepts and smart cities, and use the design research method. Data collection techniques include closed questionnaires, interviews, and iconographic data. As result, we present an application that can be used from a computer or smartphone, either actively or passively.
PERAN MEDIASI PERCEIVED USEFULNESS DALAM PLATFORM C2C E-COMMERCE

<p><em>T</em><em>he purpose of this research is to find out the factors that influence in C2C e-commerce. The sample of this study was people who had done online shopping This study</em><em></em><em>uses PLS in testing hypotheses</em><em>using 342 respondents</em><em>. The results of this study indicate that independent, information quality, trust, perceived ease of use variables have influence on perceived usefulness. Another finding is perceived usefulness influencing on consumer participation (purchase intention, recommendation intention). </em><em></em></p>
The role of access to finance from different finance providers in production risks of horticulture in Indonesia

This paper aims to investigate the association between perceived production risk of horticultural farms and access to finance from different finance providers. The collection of data was conducted among 434 farmers in Indonesia particularly farmers produced mango, mangosteen, chili and red onion. Production risk was measured by the coefficient of variation, skewness, kurtosis and the 25th percentile. Depending on the risk measure, a lower production risk was found for commercial credit from banks and flexible payments of inputs to kiosks. Conversely, we did not find any lower production risk associated with finance provided by farmers’ associations and other sources such as family and friends. Results of this study are useful for policy makers, finance providers and supply chain actors in agriculture. For policy makers, the results of this study can help in designing policy to enhance farmers’ access to finance, whereas finance providers and supply chain actors, such as traders, obtain insight into whether their financial provisions effectively reduce production risk.
Accounting Covenants in Credit Lines: Protecting Banks Against Aggregate Liquidity Shocks

We provide evidence that credit lines are a contingent source of liquidity and, therefore, an imperfect substitute for cash holdings. We consider the role of credit line covenants in rationing scarce liquidity in the banking sector. While firms use credit lines as insurance against liquidity shocks, banks use covenants to ration scarce liquidity during systemic liquidity shocks. When liquidity is abundant banks preserve firm’s access to credit following a covenant violation because of reputation concerns. Consistent with the predictions of our model, covenant violations outside the recent crisis did not lead to a higher likelihood of credit-line revocations. During the credit crisis period the revocation probability for firms violating a covenant was higher by seven percent relative to non-violating firms. Banks with high credit-line reputation revoked less outside of the crisis but during the crisis they revoked similarly to banks with low reputation due to liquidity concerns.
An Empirical Analysis of Market Value Added and Economic Profit with Reference to Listed Public Sector Enterprises of India

Measuring performance of firms from the standpoint of shareholders is crucial, given the fact that shareholders are the owners of the company and provide much needed risky – equity capital. Companies are required to augment shareholders’ wealth to indicate that they effectively and efficiently utilize owners’ money. Value based measures are primarily used to measure the shareholders’ wealth. This study aims at measuring the shareholders’ wealth by using measures like Market Value Added (MVA) and Economic Profit in the context of listed public sector enterprises of India. The study covers a period of four years ranging from 2012 to 2015. The study reveals that out of 20 companies, 11companies recorded statistically significantly positive MVA during the study period. On the contrary, only three companies recorded statistically significantly positive mean Economic Profit during the study period. The study also finds that MVA and Economic Profit are statistically significantly correlated. The results of the study provide insights into the shareholders’ wealth creation in the context of PSEs. It will help the policy makers in understanding the framework of MVA and Economic Profit while measuring the performance of these companies from the shareholder’s perspective.
From words to pixels: text and image mining methods for service research

Purpose The purpose of this paper is to describe and position the state-of-the-art of text and image mining methods in business research. By providing a detailed conceptual and technical review of both methods, it aims to increase their utilization in service research. Design/methodology/approach On a first stage, the authors review business literature in marketing, operations and management concerning the use of text and image mining methods. On a second stage, the authors identify and analyze empirical papers that used text and image mining methods in services journals and premier business. Finally, avenues for further research in services are provided. Findings The manuscript identifies seven text mining methods and describes their approaches, processes, techniques and algorithms, involved in their implementation. Four of these methods are positioned similarly for image mining. There are 39 papers using text mining in service research, with a focus on measuring consumer sentiment, experiences, and service quality. Due to the nonexistent use of image mining service journals, the authors review their application in marketing and management, and suggest ideas for further research in services. Research limitations/implications This manuscript focuses on the different methods and their implementation in service research, but it does not offer a complete review of business literature using text and image mining methods. Practical implications The results have a number of implications for the discipline that are presented and discussed. The authors provide research directions using text and image mining methods in service priority areas such as artificial intelligence, frontline employees, transformative consumer research and customer experience. Originality/value The manuscript provides an introduction to text and image mining methods to service researchers and practitioners interested in the analysis of unstructured data. This paper provides several suggestions concerning the use of new sources of data (e.g. customer reviews, social media images, employee reviews and emails), measurement of new constructs (beyond sentiment and valence) and the use of more recent methods (e.g. deep learning).
PENGARUH PROFITABILITAS, LEVERAGE, DAN UKURAN PERUSAHAAN TERHADAP LUAS PENGUNGKAPAN TANGGUNG JAWAB SOSIAL

This research is aimed to at knowing the effect of profitability, leverage, and company size to corporate sosial responsibility disclosure of mining companies. The population in this study were mining companies listed on the Indonesian stock exchange. The samples in this study are 11 companies. The data used is secondary data from www.idx. co.id. Data analysis techniques used multiple linear regression analysis and a measurement instruments to test this research use SPSS. The affect of three variable are profitability, leverage and company size of corporate sosial responsibility disclosure 35,2%, while the rest is influenced by other factors outside research variable. Partially, profitability has a significant positive effect on CSR with significance value 0,002<0,05, leverage has no significant effect on CSR with significance value 0,106>0,05, Company size has significant on CSR with significance value 0,001<0,05.