Miracle-dz/UniFAR-FTUs huggingface dataset:
The Limits of Reputation in Platform Markets: An Empirical Analysis and Field Experiment

We argue that reputation mechanisms used by platform markets suffer from two problems. First, buyers may draw conclusions about the quality of the platform from single transactions, causing a reputational externality across sellers. Second, for a variety of reasons we discuss, reputations will be biased. We document these problems using eBay data and claim that platforms can benefit from identifying and promoting higher quality sellers. We create an unobservable measure of seller quality and demonstrate the benefits of our approach through a controlled experiment that prioritizes better quality sellers. We highlight the importance of reputational externalities and chart an agenda that aims to create more realistic models of platform markets.
Is there an optimal board size

This research quantitatively examines the determinants of board size and the consequence it has on the performance of large companies in Australia. In line with international and the prevalent United States research the results suggest that there is no significant relationship between board size and their subsequent performance. In examining whether more complex operations require larger boards it was found that larger firms or firms with more lines of business tended to have more directors. Data analysis from the research supports the proposition that blockholders could affect management practices and that they enhances performance as measured by shareholder return.
How Effective Is Test-Driven Development?

Test-Driven Development (TDD) [Beck 2002] is one of the most referenced, yet least used agile practices in industry. Its neglect is due mostly to our lack of understanding of its effects on people, processes, and products. Although most people agree that writing a test case before code promotes more robust implementation and a better design, the unknown costs associated with TDD’s effects and the inversion of the ubiquitous programmer “code-then-test” paradigm has impeded TDD’s adoption.
Analyst Self-Confidence and Forecast Rationality

This paper investigates the bias and over- or under-reaction to previous years earnings using data from years between 1988 and 2005. The purpose is to study the effect of analysts' recommendations on these issues. In most of the previous literature it has been found that there is a positive bias in analyst's forecasts, and that they over-react to previous earnings changes. In this study, it is hypothesized that analysts' self-confidence can be seen in the accuracy of the forecasts. Self-confidence is measured with whether an analyst gives a clear recommendation (strong buy, buy, underperform, sell) or not. It is hypothesized that analysts' self-confidence can be seen in the accuracy of the forecasts. If an analyst is confident of his or her forecast, he or she would be more willing to give a recommendation on the company under investigation. First, it is found that the forecasts are overly optimistic in average, and that there is clear over-reaction to previous earnings changes. This is in accordance to previous studies. Second, according to the results, the optimism is greater for those forecasts that are equipped with a recommendation, but, the over-reaction is greater for the forecasts that are not equipped with any recommendation.
Effect of living donor liver transplantation on outcome of children with inherited liver disease and hepatocellular carcinoma

Abstract: We described six children with heritable liver disease and hepatocellular carcinoma treated with living‐related liver transplantation. Underlying liver diseases were type‐1 tyrosinemia (three patients), progressive familial intrahepatic cholestasis type II (two patients), and Wilson's disease (one patient). Two of the tumors were found incidentally during liver transplantation. Number of nodules was 12, 15, 3, 2, and 1 (in two patients). Three patients were treated with chemotherapy before the procedure. Chemotherapy was not given to any patient after liver transplantation. The mean follow‐up was 17.7 ± 6 months (range: 7–24). All patients are tumor recurrence free. Both graft and patient survival rates are 100% at a median of 18.5 months follow‐up. Physicians in charge of treating children with heritable liver disease should screen them periodically for the development of hepatocellular carcinoma. Liver transplantation may offer these children better survival rates.
Synergistic effect between apolipoprotein E and angiotensinogen gene polymorphisms in the risk for early myocardial infarction.

BACKGROUND Several studies based on different populations worldwide have described an association between cardiovascular diseases and genetic variations in the apolipoprotein E (A:POE), angiotensinogen (A:GT), angiotensin receptor type 1 (A:T1R), and angiotensin-converting enzyme (A:CE) genes. In addition, there is growing evidence of an interaction between hypercholesterolemia and the renin-angiotensin system in the risk for hypertension and atherosclerosis. METHODS To determine whether the DNA polymorphisms in A:POE (epsilon2, epsilon3, and epsilon4 alleles), A:GT (M235T), A:T1R (1166 A:/C:), and ACE (I:/D:) are associated with early onset of myocardial infarction (MI), we genotyped 220 patients and 200 controls <55 years of age. Patients and controls were males from the same homogeneous Caucasian population. Data concerning hypertension, diabetes, and tobacco consumption were recorded. The lipid profiles of patients and controls were also determined. RESULTS APOE, ACE, AGT, and AT1R allele and genotype frequencies did not differ between patients and controls. None of these polymorphisms was related to the biochemical values in patients or controls. The frequency of individuals who were both APOE epsilon4 allele carriers and AGT-TT homozygotes was significantly higher in patients than in controls (11% vs 3.5%; P: = 0.0037). In patients, the frequency of epsilon4 carriers was significantly higher (P: <0.00001) in those who were AGT-TT (46%) than those who were AGT-MT/MM (14%). Mean cholesterol was significantly higher in AGT-TT + APOE epsilon34/44 patients than in the TM/MM + epsilon34/44 or TT + epsilon23/33 genotypes (P: = 0. 029). CONCLUSIONS Our data suggest a synergistic effect between the APOE and AGT polymorphisms and early MI. The increased risk could be mediated in part through higher cholesterol concentrations among individuals who are AGT-TT + APOE epsilon4 allele carriers.
Self-Compassion and Responses to Trauma: The Role of Emotion Regulation

Emerging literature suggests that self-compassion may be an important concept for understanding recovery from the impact of trauma and posttraumatic stress disorder (PTSD). The present study explored the interconnection among self-compassion, resilience, emotion dysregulation, and PTSD symptom severity in a sample of treatment-seeking women with PTSD. We predicted that self-compassion would be negatively related to PTSD symptom severity and to emotion dysregulation, and positively related to resilience. The results supported our main hypotheses. In addition, emotion dysregulation mediated the relationship between PTSD symptom severity and self-compassion and affected the relationship between self-compassion and resilience. These findings corroborate previous research that points to the important role of self-compassion in mental health and in the aftermath of stressful life events. The present study expands this research by demonstrating that PTSD symptom severity is negatively related to self-compassion in a clinical population of women with experiences of severe and repeated interpersonal trauma.
Role Stress, Emotional Exhaustion, and Job Satisfaction in the Hotel Industry: The Moderating Role of Supervisory Support

The purpose of this study is to investigate supervisory support as a moderator of the effects of role conflict and role ambiguity on emotional exhaustion and job satisfaction. This study also examines the moderating role of supervisory support on the relationship between emotional exhaustion and job satisfaction. Data were collected from a sample of frontline hotel employees in Northern Cyprus. The aforementioned relationships were tested based on hierarchical multiple regression analysis. The results demonstrate that supervisory support mitigates the impact of role conflict on emotional exhaustion and further reveal that supervisory support reduces the effect of emotional exhaustion on job satisfaction. There is no empirical support for the rest of the hypothesized relationships. Implications of the empirical results are discussed, and future research directions are offered. The purpose of this study is to investigate supervisory support as a moderator of the effects of role conflict and role ambiguity on emotional exhaustion and job satisfaction. This study also examines the moderating role of supervisory support on the relationship between emotional exhaustion and job satisfaction. Data were collected from a sample of frontline hotel employees in Northern Cyprus. The aforementioned relationships were tested based on hierarchical multiple regression analysis. The results demonstrate that supervisory support mitigates the impact of role conflict on emotional exhaustion and further reveal that supervisory support reduces the effect of emotional exhaustion on job satisfaction. There is no empirical support for the rest of the hypothesized relationships. Implications of the empirical results are discussed, and future research directions are offered.
Understanding B2B e-commerce implementation : the evolving Australian experience

This study investigates the implementation process of business-to-business (B2B) e-commerce in Australian organisations. Using a case study method, the study extends substantially theories on Information Systems (IS) implementation. It also suggests an entirely new framework for understanding e-commerce implementation behaviour, which is useful for organisations developing and managing e-commerce initiatives.
Comparative, cross‐cultural, and cross‐national research

Purpose – The paper seeks to provide guidance for those who have data from multiple countries and are considering writing a comparative or cross‐cultural/national research paper.Design/methodology/approach – The approach taken is an essay format.Findings – International comparative marketing research studies are often rejected from the International Marketing Review because authors develop theory for which they have inappropriate data.Research limitations/implications – Research models need to be commensurate with the data available. Models that claim to assess how nation‐level variables of interest differentially drive beliefs, attitudes, and behaviors across countries, and yet only test the models using samples from two or three countries are not appropriate. Appropriate solutions for researchers seeking to undertake international comparative research are suggested.Originality/value – The paper provides researchers with insights into successful strategies for publishing international comparative research.
Acquirers’ Goals’ Influence on Acquirer-Target Bilateral Interactions

We argue that the two distinct components of the economic synergy goal (i.e. cost reduction and revenue enhancement) have different implementation implications, in particular, as they relate to two interactive dimensions of acquisition implementation: the acquirer’s effort at involving target employees in implementation decision-making and at operational cross-fertilization. Our paper contributes to the acquisition and strategy implementation literature, as well as to human resource management and organization design research more broadly.
Does the New Economy Need New Governance? Ownership, Knowledge and Performance

We study the implications of ownership and its induced incentives on firm performance in the ‘New Economy’. Instead of traditional performance we use firm survival on the stock market as the performance indicator. Using a unique data set of all 341 firms listed on the Neuer Markt, the German counterpart of the NASDAQ, our results differ from studies on more traditional firms. Ownership by CEOs has no influence on firm survival when introducing measurements of human capital and intellectual property rights. This confirms assumptions that firms in the ‘New Economy’ differ also in their governance structure from traditional firms.
Insights from Spanish-Speaking Employees in the Iowa Horticultural Industry

Addressing the needs of Latino workers can help improve working conditions, job satisfaction, and productivity of both employees and the companies hiring Latino workers. The study reported here assessed educational needs, communication gaps, and technical skills of Latino workers working in the horticultural industry in Iowa—an ethnic group that is relatively new to Iowa. Focus groups were conducted with Latino workers and produced topics for educational programming and suggestions that could improve communications between predominantly English-speaking managers and Spanish-speaking Latino employees, and the horticultural knowledge of the Latino employees.
Business logistics/supply chain management : planning, organizing, and controlling the supply chain

I. INTRODUCTION AND PLANNING. 1. Business Logistics/Supply Chain-A Vital Subject. 2. Logistics Strategy/Supply Chain and Planning. II. CUSTOMER SERVICE GOALS. 3. The Logistics/Supply Chain Product. 4. Logistics/Supply Chain Customer Service. 5. Order Processing and Information Systems. III. TRANSPORT STRATEGY. 6. Transport Fundamentals. 7. Transport Decisions. IV. INVENTORY STRATEGY. 8. Forecasting Supply Chain Requirements. 9. Inventory Policy Decisions. 10. Purchasing and Supply Scheduling Decisions. 11. The Storage and Handling System. 12. Storage and Handling Decisions. V. LOCATION STRATEGY. 13. Facility Location. 14. The Network Planning Process. VI. ORGANIZATION AND CONTROL. 15. Logistics/Supply Chain Organization. 16. Logistics/Supply Chain Control. Selected Bibliography. Appendix A. Areas Under the Standardized Normal Distribution. Appendix B. Unit Normal Loss Integrals.
Verrucous carcinoma of the larynx: Role of human papillomavirus, radiation, and surgery

There is confusion regarding verrucous carcinoma of the larynx, an enigmatic, well‐differentiated variant of squamous cell carcinoma known for local recurrence and anaplastic transformation following irradiation. This report adds 12 new cases and reviews the literature concerning radiation results versus surgical results. Treatment of 37 patients with primary radiotherapy resulted in a 49% cure rate and a 51% failure rate; the death rate from anaplastic transformation was 11%. Primary surgery on 144 patients resulted in a 92.4% cure rate, a 7.6% initial failure rate, and a 3.5% rate of deaths attributed to neoplasm. Isolation of human papillomavirus type 16 (HPV‐16) DNA sequences indicates that the lesion is genetically abnormal. Radiation‐induced DNA breaks may activate these sequences. These findings support a surgical approach. Treatment recommendation for T1 lesions is carbon dioxide laser excision to minimize tissue trauma and local recurrence. For T2 to T4 lesions, the recommendation is sound oncologic extirpation. Neck dissection is not indicated.
A randomized control trial to evaluate the effectiveness of intravenous, intra-articular and topical wash regimes of tranexamic acid in primary total knee arthroplasty

Background: The efficacy of tranexamic acid to decrease post-operative blood loss and blood transfusion is well established in literature. However, the ideal mode of administration is debatable. Limited literature has compared all the available modes of administration including intravenous (IV), topical irrigation and retrograde through drain. We hypothesized that no difference would be present in either form of administration of tranexamic acid. Methods: Fifty patients in four groups were enrolled for study. Group 1 received drug intravenously, group 2 had topical washing with drug before closure, group 3 received drug after closure through drain and group 4 was control that received no tranexamic acid. Post-operative blood loss, calculated blood loss, haemoglobin drop, transfusion requirements and complications were studied for all four groups. Results: Tranexamic acid results in lower bleeding irrespective of the mode of administration compared to control group. Total loss at end of 5 days is similar in all tranexamic acid groups irrespective of method used to deliver the drug. Calculated blood loss and haemoglobin drop was minimum for IV and in patients who were administered drug retrograde through drain. Requirement for blood transfusion was found to be lower in all tranexamic acid patients compared to non-tranexamic acid group. The requirement was highest in topical wash group among all tranexamic acid groups. Conclusion: We conclude that intra-articular administration through drain and IV administration are equally effective and superior to topical wash method in reducing blood loss, haemoglobin fall and transfusion requirements.
Molecular analysis of genetic changes in ependymomas

Ependymomas are glial cell‐derived tumors. They are, in contrast to other gliomas (astrocytomas, oligodendrogliomas, and oligoastrocytomas), ill‐defined with respect to the genes and chromosomal segments important in their tumorigenesis. In this study, we extensively screened I7 ependymomas for genetic changes characteristic of other gliomas. Allelic loss was detected on chromosome arm 22q in three tumors; on chromosome 10 in two tumors; on chromosome arm 17p in two tumors; and on chromosome arms 6q, 9p, I 3q, and I9q, each in one tumor. No allelic losses were found on chromosome arms I p and I6q. None of the tumors had EGFR gene amplification. In each case, the chromosomal segment affected by the deletion included the region known t o harbor a tumor suppressor gene important in glioma tumorigenesis. We conclude that ependymomas resemble the other glial neoplasms with respect to type and location of the chromosomal changes involved. Given the relatively infrequent occurrence of these genetic changes, ependymomas should be considered genetically as low‐grade gliomas. © 1995 Wiley‐Liss, Inc.
A Comparison of Left Atrial Size by Two‐Dimensional Transthoracic Echocardiography and Magnetic Endocardial Catheter Mapping

PATEL, V.V. , et al.: A Comparison of Left Atrial Size by Two‐Dimensional Transthoracic Echocardiography and Magnetic Endocardial Catheter Mapping. This study sought to validate the accuracy of magnetic electroanatomic mapping (MEAM) for determining cardiac chamber size in a clinically relevant situation. The authors chose to compare LA size measured by MEAM to that assessed by two‐dimensional guided M‐mode echocardiography. The study included 37 patients with drug refractory paroxysmal atrial fibrillation who underwent two‐dimensional echocardiography and a detailed MEAM of the LA. The entire LA was mapped with a mean of 132 ± 50 points with attention to identifying the mitral annulus and posterior wall of the LA. The MEAM measurement of LA size was taken as the distance from the anterior wall of the LA to the posterior wall in a plane parallel to the mitral valve annulus at atrial end‐diastole. LA dimension determined by M‐mode echocardiography was assessed in a plane parallel to the mitral valve annulus in the parasternal long‐axis view during atrial end‐diastole. LA size assessed by M‐mode echocardiography was 41.2 ± 5.0 versus 40.9 ± 4.5 mm as assessed by MEAM, with good correlation (r = 0.87, P < 0.001). Only three patients had a difference in LA size that was > 0.3 cm between the two measurement techniques. Thus, it appears that LA anteroposterior dimension as determined by electroanatomic mapping is similar to that determined by two‐dimensional guided M‐mode echocardiography. MEAM appears to be an accurate method by which LA size can be assessed in patients with drug refractory atrial fibrillation undergoing left atrial ablation procedures.
All-atom Molecular-level Computational Simulations of Planar Longitudinal Shockwave Interactions with Polyurea, Soda-lime Glass and Polyurea/Glass Interfaces

Purpose – The purpose of this paper is to study the mechanical response of polyurea, soda-lime glass (glass, for short), polyurea/glass/polyurea and glass/polyurea/glass sandwich structures under dynamic-loading conditions involving propagation of planar longitudinal shockwaves. Design/methodology/approach – The problem of shockwave generation, propagation and interaction with material boundaries is investigated using non-equilibrium molecular dynamics. The results obtained are used to construct basic shock Hugoniot relationships associated with the propagation of shockwaves through a homogeneous material (polyurea or glass, in the present case). The fidelity of these relations is established by comparing them with their experimental counterparts, and the observed differences are rationalized in terms of the microstructural changes experienced by the shockwave-swept material. The relationships are subsequently used to predict the outcome of the interactions of shockwaves with polyurea/glass or glass/polyu.
Role of Salt Bridge Formation in Antigen-Antibody Interaction

For elucidation of the role of salt bridge formation in the antigen-antibody complex, the interaction between hen egg white lysozyme (HEL) and its monoclonal antibody HyHEL10, the structure of which has been well characterized and forms one salt bridge (Lys97 of HEL and Asp32 of HyHEL10 heavy chain variable region (VH)), was investigated. Asp32 of VH was substituted with Ala, Asn, or Glu by site-directed mutagenesis, and the interaction between HEL and the mutant fragments of the variable region of light chain was investigated by inhibition of the enzymatic activity of HEL and isothermal titration calorimetry. Inhibition assay indicated that these mutations lowered the inhibition only slightly. Thermodynamic study indicated that the negative enthalpic change in the interaction between each of the mutant variable regions of light chain and HEL was significantly increased, although the association constant was slightly decreased, suggesting that these mutations increased the entropy change upon antigen-antibody binding. These results indicate that the role of salt bridge formation in the HyHEL10-HEL interaction is to lower the entropic loss due to binding. In the mutant proteins, the numbers of residues that were perturbed structurally on binding increased, suggesting that the salt bridge suppresses excess structural movement of the antibody upon binding.