Product defects are not created equal: prioritizing production process improvements

Abstract

Despite manufacturers’ efforts to improve quality, customers frequently experience product defects. Based on expectation confirmation theory, hypotheses concerning the effects of experiencing product defects on overall quality perceptions and loyalty to the product manufacturer have been developed and tested. Our results show that experiencing product defects related to performance, ease of use, prestige and versatility damages overall quality perceptions and decrease customer loyalty to the product manufacturer, either fully or partially mediated through overall quality perceptions. Contrary to frequent claims in the literature, experiencing even a single product defect per quality dimension damages customers’ quality perceptions. Furthermore, different types of product defect damage customer perceptions of product quality and loyalty to the manufacturer differently. Building on these results, we develop a defect typology and a portfolio visualization that allows operations managers to prioritize production process improvements.     

Late-onset hypogonadism: the advantages of treatment with human chorionic gonadotropin rather than testosterone

The traditional pharmacological treatment of patients with late onset hypogonadism (LOH) is represented by different formulations of testosterone (T) or alternatively by the extractive human chorionic gonadotropin (HCG). The hormone replacement treatment (HRT) is associated with the potential increase of hematocrit, serum concentrations of prostate-specific antigen (PSA) and prostate volume. Moreover, the gynecomastia represent a condition frequently associated with HRT. Recent evidences showed the role of leydig cells in the 25-hydroxylation of vitamin D and the elevated frequency of hypovitaminosis D among LOH patients. Finally, another important aspect of LOH is represented by the frequency of secondary infertility due to age or to traditional HRT. This study evaluated 40 LOH patients treated for 6 months with extractive HCG (n?=?10 patients) and three different formulations of T: transdermal (n?=?10 patients), undecaonate (n?=?10 patients) and enantate (n?=?10 patients). Hormonal, anthropometric, metabolic and sperm parameters were evaluated and compared. Moreover, the main safety parameters and the results of the main questionnaires were evaluated. After treatment, HCG group showed serum concentrations of 25-OH-vitamin D significantly higher (p?p?p?p?相似文献   

A spatial analysis of health and pharmaceutical firm survival

The presence of knowledge spillovers and shared human capital is at the heart of the Marhall–Arrow–Romer externalities hypothesis. Most of the earlier empirical contributions on knowledge externalities; however, considered data aggregated at a regional level so that conclusions are based on the arbitrary definition of jurisdictional spatial units: this is the essence of the so-called modifiable areal unit problem. A second limitation of these studies is constituted by the fact that, somewhat surprisingly, while concentrating on the effects of agglomeration on firm creation and growth, the literature has, conversely, largely ignored its effects on firm survival. The present paper aims at contributing to the existing literature by answering to some of the open methodological questions reconciling the literature of Cox proportional hazards model with that on point pattern and thus capturing the true nature of spatial information. We also present some empirical results based on Italian firm demography data collected and managed by the Italian National Institute of Statistics (ISTAT).     

The Effects of the Specialist Schools Education Policy on School and Post‐School Outcomes in England

We investigate the effects of the specialist schools policy, introduced in 1994 in England, on test scores and truancy for pupils during compulsory schooling. We also assess the effects on labour market status and post‐secondary test score performance. We use matching models and data from the Youth Cohort Surveys for pupils who left school in either 2002 or 2004. We find that the policy did raise test scores, as well as increase the probability of employment. The evidence on post‐secondary test scores is mixed insofar as the policy increased the number of A levels studied but reduced average points scores.     

Construction of a Frailty Indicator with Partially Ordered Sets: A Multiple-Outcome Proposal Based on Administrative Healthcare Data

Social Indicators Research - Given the progressive aging of Italian and European populations, the number of cases with chronic diseases is steeply increasing. This calls for new strategies for...     

Schengen's Soft Underbelly? Irregular Migration and Human Smuggling across Land and Sea Borders to Italy

La migration illégale à destination de l'Italie ou passant par ce pays est généralement associée dans l'esprit des gens à l'image de centaines, voire de milliers de migrants traversant la Méditerranée entassés dans de vieux rafiots se maintenant tout juste à flot. On considère souvent que les traversées de ce type sont la preuve de l'existence de cartels criminels qui seraient structurés hiérarchiquement, centralisés, extrêmement bien organisés et actifs au niveau mondial. Le seul problème avec de telles idées reçues est qu'elles ne concordent absolument pas avec les faits dont on dispose et n'ont pas grand chose à voir avec la réalité concrète des systèmes de migration illégale. Cette étude passe en revue un certain nombre de dossiers de tribunaux italiens concernant diverses organisations qui opèrent aussi bien au travers des frontières terrestres que maritimes. Elle montre comment de telles organisations opèrent en tenant compte de diverses spécificités locales et contraintes structurelles.     

Lottery- and survey-based risk attitudes linked through a multichoice elicitation task

We analyze the results from three different risk attitude elicitation methods. First, the broadly used test by Holt and Laury (2002), HL, second, the lottery-panel task by Sabater-Grande and Georgantzis (2002), SG, and third, responses to a survey question on self-assessment of general attitude towards risk (Dohmen et al. 2011). The first and the second task are implemented with real monetary incentives, while the third concerns all domains in life in general. Like in previous studies, the correlation of decisions across tasks is low and usually statistically non-significant. However, when we consider only subjects whose behavior across the panels of the SG task is compatible with constant relative risk aversion (CRRA), the correlation between HL and self-assessed risk attitude becomes significant. Furthermore, the correlation between HL and SG also increases for CRRA-compatible subjects, although it remains statistically non-significant.