Away from Dissatisfaction,Closer to Well-Being: A Multidimensional Synthetic Measure

As part of the international debate on methods for measuring the social progress of a population, there has been increasing interest in individual subjective opinions about different aspects of quality of life (elementary indicators). In the literature, many methods have been introduced for producing measures of subjective well-being based on these opinions. Some of these methods aim to construct synthetic measures that allow us to consider all the aspects simultaneously. This topic often requires subjective methodological choices and/or distributional assumptions and, when the opinions are encoded by means of categorical ordinal values, the eventual quantification of the original variables. Here, starting from the Istat multipurpose survey on households’—aspects of daily life, we propose an original method for constructing a global satisfaction index. We introduce a variable based on the joint distribution of all the elementary indicators that is able to express the individual degree of global satisfaction. This approach allows us to maintain the original ordinal data scale and to avoid any aggregation formula. By comparing the observed distribution of the new variable and the theoretical one, which refers to the situation of overall dissatisfaction (all individuals are dissatisfied for every aspect), we propose three indices of global satisfaction. We also implemented two simulation studies that confirms both the efficacy and robustness of our method. We then applied it to measure the global satisfaction degree of the Italian population, using Istat multipurpose survey data for the year 2013.     

Political information use on WeChat and political discussion in China: toward a networked political discussion model

This study was conducted to test the relationships between WeChat (a popular Chinese mobile SNS) and a number of variables including the structural features of users’ networks, the use of political information on WeChat, political discussions, and political attitudes. The results of this study showed that the use of political information by WeChat users on this platform affected their political discussions and political attitudes. Furthermore, both positive and negative WeChat political discussions mediated the effects of the use of political information on political attitudes. Additionally, the connectedness of networks significantly lowered the likelihood of individual users to comment negatively on politics. These findings indicate that WeChat users with diverse social networks are more likely to engage in positive political discussions than in negative political discussions. The theoretical and practical implications of this study are discussed.     

Married female labor force participation and suicide in Canada, 1971 and 1981

The cultural context affects the relationship between women's involvement in the labor force and the odds of suicide for both men and women. In this study, we examine this relationship in Canada in 1971 and then again in 1981, when cultural conditions were significantly different. Two hypotheses are evaluated: (1) in 1971 the effects of married female labor force participation increase suicide risk for both men and women, due to the relative antipathy of society toward women's participation in the labor force; and (2) in 1981 the effects of married female labor force participation decrease the risk of suicide for both sexes, for there are net positive gains (psychic and material) in a context of widespread acceptance of women's involvement in the paid economy. The empirical analysis provides support for these two hypotheses.     

Urbanization homogenizes the interactions of plant-frugivore bird networks

Urban Ecosystems - Anthropogenic activities are the main cause of habitat loss and fragmentation, which directly affects biodiversity. Disruption in landscape connectivity among populations may...     

Old scissors to industrial automation: the impact of technologic evolution on worker's health

To cut a fabric, the professional performs different jobs and among them stands out the cut. The scissors has been the instrument most used for this activity. Over the years, technology has been conquering its space in the textile industry. However, despite the industrial automation able to offer subsidies to answer employment market demands, without appropriate orientation, the worker is exposed to the risks inherent at the job. Ergonomics is a science that search to promote the comfort and well being in consonance with efficacy. Its goals are properly well defined and clearly guide the actions aimed at transforming the working conditions. This study aimed to analyze the activity of cut tissues with a machine by a seamstress and the implications on their body posture. The methodology used was the observation technique and application of the Protocol RULA, where the result obtained was the level 3 and score 5, confirming that "investigations and changes are required soon". Conclude that using the machine to tissue cut should be encouraged, but in conjunction with orientations for improving posture while handling it. It seeks to prevent dysfunction of the musculoskeletal system that prevents employees from performing their work tasks efficiently and productively.     

Are diamonds a safe haven?

The diamond market has recently experienced important structural changes moving from a monopolistic market to a more liberalised and competitive one. As a result, diamonds are being discussed as a new investment asset class, with possible valuable portfolio contributions. The aim of this paper is to analyse their potential role within an investment framework, using previously unpublished data. We use the GemShares and NASDAQ OMX patented license and Polished Prices proprietary Price Reporting Agency (PRA) database to build our own standardized financial polished diamond basket indices (DBIs), using actual reported data of traded prices, adjusted for liquidity by traded volume. The impact of adjusting for traded volume of investment grade (only) diamonds is sufficient to develop a unique subset different to that captured and reported by the PRA. We first construct an index for High-Quality (HQ) and a second one for Medium-Quality (MQ) diamonds so we can study both of their dynamics and investment features. We further analyse the relationship the two indices have with major macroeconomic and financial variables, as well as other precious commodities to investigate their role as safe haven or hedge. We find that the DBI_HQ Index returns are, on average, positively correlated with major macroeconomic variables—in particular with the Euro and Chinese Interest rates. The DBI_MQ Index returns are largely uncorrelated with the same macroeconomic variables—with the exception of Euro Interest rates and the Israeli Exchange rate. When we compare our Diamond Indices returns with major financial variables and other precious commodities, we find a broad lack of correlation between their returns, and significant difference between the DBI_HQ and DBI_MQ Indices. We may conclude that diamonds are broadly a poor hedge for any of the portfolios we considered, with a few important exceptions—especially gold. Using Bauer and Lucey’s (Financ Rev 45(2):217–229. doi: 10.2139/ssrn.952289, 2010) approach we further tested the “safe haven value” and “hedging usefulness” of the two Indices. In contrast with previous studies we believe the unique data we accessed allowed us to demonstrate that diamonds represent a strong hedge for gold investors, and in addition exhibit features of a safe haven for stock markets during periods of financial stress.     

Estimating Listeria monocytogenes Growth in Ready-to-Eat Chicken Salad Using a Challenge Test for Quantitative Microbial Risk Assessment

Currently, there is a growing preference for convenience food products, such as ready-to-eat (RTE) foods, associated with long refrigerated shelf-lives, not requiring a heat treatment prior to consumption. Because Listeria monocytogenes is able to grow at refrigeration temperatures, inconsistent temperatures during production, distribution, and at consumer's household may allow for the pathogen to thrive, reaching unsafe limits. L. monocytogenes is the causative agent of listeriosis, a rare but severe human illness, with high fatality rates, transmitted almost exclusively by food consumption. With the aim of assessing the quantitative microbial risk of L. monocytogenes in RTE chicken salads, a challenge test was performed. Salads were inoculated with a three-strain mixture of cold-adapted L. monocytogenes and stored at 4, 12, and 16 °C for eight days. Results revealed that the salad was able to support L. monocytogenes’ growth, even at refrigeration temperatures. The Baranyi primary model was fitted to microbiological data to estimate the pathogen's growth kinetic parameters. Temperature effect on the maximum specific growth rate (μ_max) was modeled using a square-root-type model. Storage temperature significantly influenced μ_max of L. monocytogenes (p < 0.05). These predicted growth models for L. monocytogenes were subsequently used to develop a quantitative microbial risk assessment, estimating a median number of 0.00008726 listeriosis cases per year linked to the consumption of these RTE salads. Sensitivity analysis considering different time–temperature scenarios indicated a very low median risk per portion (<−7 log), even if the assessed RTE chicken salad was kept in abuse storage conditions.     

Expectations of Career Counseling and Their Effect on Client Satisfaction

Although there has been growing attention to clients' expectations of career counseling, more research is necessary to clarify the role of these expectations in shaping client satisfaction at the end of the intervention. On the basis of expectation confirmation theory, this study examined the indirect effect of clients' initial expectations on overall satisfaction through the perceived performance and final confirmation of expectations. We also explored whether this indirect effect is dependent on counselors' initial expectations. Longitudinal data were collected on 83 counselor-client dyads involved in a career counseling intervention in northeast Italy. Results confirmed that clients' initial expectations predicted overall satisfaction with the intervention through the subsequent mediation of perceived performance and confirmation of clients' expectations. The moderating role of the counselors' initial expectations was not confirmed. These findings imply that career counselors should invest their efforts in managing clients' expectations.     

How employee empowerment influences organization–employee relationship in China

The current study examines how employees’ perceptions of empowerment impact the quality of the organization–employee relationship. Based on the on-line survey of 223 employees from a variety of companies in China, both dimensions of employee empowerment—feelings of competence and feelings of control—serve as positive predictors for organization–employee relationship. However, employees’ feelings of control wield more weight in the prediction than do feelings of competence.