When technical indicators predict short-term reversal

I went through the history of some of the most successful trading rules from the 80s in the US market. Then, combining them, I created a strategy based on picking the best stocks for the next month. It has underperformed the benchmark heavily, generating the worst portfolio of the entire pool of stocks. Therefore, I analyze short-term reversal as explanation. The same could also justify why the worst predicted performer portfolio is the one that does best. This shows that, when too many investors go into the same direction of trades, the outcome is the existence of opportunities to exploit

Parenting Styles and Family Communication as Correlates of Juvenile Delinquency

The goal of this study was to examine parenting styles and family communication as correlates of juvenile delinquency. A review of the literature was completed in the areas of parenting styles, family communication, and juvenile delinquency. The literature that was reviewed for this study was examined mainly from juvenile perceptions. This study was approached from a general systems theory perspective. A sample of juveniles (N = 78) from Weber County, Utah, involved in the juvenile justice system completed a survey assessing their perception of parenting styles and family communication. The survey was a 25-item questionnaire measuring kindness, unkindness, communication, authoritarian parenting, authoritative parenting, and permissive parenting. A correlation was computed to show the relationship between the variables . It showed that there were moderate positive correlations between kindness, communication, and authoritative parenting styles. Also there was a moderate negative correlation between unkindness, communication, and authoritative parenting styles. While the sample limits generalizations of results, these preliminary findings provide interesting results for professionals who work with juveniles involved in the juvenile justice system

P-wave velocity, density and vertical stress magnitude along the crustal Po Plain (northern Italy) from sonic log drilling data

In order to better characterize P-wave velocities for the shallow crust of the Po Plain and surrounding regions, we have selected 64 deep wells mainly located in the plain and also along the Apennine belt and Adriatic coast. In particular, we have analyzed the stratigraphic profiles for all wells, and the available sonic logs (37 out of 64). From these data we have examinated the P-wave velocity trend with depth and estimated rock density following an empirical relationship between sonic velocity and density in sedimentary rocks. Then we have calculated, notably for the first time in a large area of Italy, the overburden stress magnitude for each well. For instance at a depth of 5 km we have found values varying from 105 to 130 MPa moving from the Adriatic coast to the Apennine belt. Consequently, the Apennines belt shows a maximum regional lithostatic gradient of around 26 MPa/km while the Po Plain and Adriatic region have values of around 21 MPa/km. The maximum density value that can be considered for the Apennine crustal belt corresponds to 2.65 g/cm3; in the Po Plain the mean density is around 2.25 g/cm3, while in the Adriatic area the average density has the lowest value in the region at 2.13 g/cm3. Although in this area a 2D crustal P-wave velocity model does not adequately constrain the complicated and uneven tectonics, we have nevertheless established a shallow model consisting of five separate layers. The strength of this paper lies in the possible use of these direct data, together with other derived geological and geophysical information, to build a 3D model of the area

Liquid chromatographic strategies for separation of bioactive compounds in food matrices

Nowadays, there is an increasing attention for nutraceuticals and, in general, bioactive compounds naturally present in food. Indeed, the possibility of preserving human health and preventing disease (e.g., cardiovascular diseases, cancer etc.) by the intake of healthy food is attractive for both consumers and food industries. In turn, research in this field was also prompted significantly, with the aim of characterizing these bioactive compounds and ascribe to them a specific activity. The bioactive compounds can belong to several chemical classes. However, their chemical diversity and presence in complex matrices, such as food, make it challenging both their isolation and characterization. To tackle this issue, efficient separation systems are needed, which are mainly based on chromatography. In this context, this mini-review aims to provide the reader with an overview of the most relevant and recent approaches for the separation of the most common bioactive compounds in food, in particular polyphenols, phenols, carotenoids, and peptides, by liquid chromatography approaches. © 2018 by the authors

Epidemiology of coronary microvascular obstruction

Primary percutaneous coronary intervention (PPCI) is nowadays the preferred reperfusion strategy for treating ST-elevation myocardial infarction (STEMI) patients, aiming at restoring epicardial infarct-related artery patency and achieving microvascular reperfusion as early as possible, thus limiting the extent of irreversibly injured myocardium. Yet, in a sizeable proportion of patients, PPCI achieves epicardial coronary artery reperfusion but not myocardial reperfusion due to the occurrence of coronary microvascular obstruction (CMVO), a condition clinically known as no-reflow. Prevalence of CMVO is variable, ranging from 5% up to 50%, according to the methods used to assess the phenomenon and to the population under study. Indeed, CMVO can be assessed using different techniques and at different time points after STEMI. In this chapter, we review the available data regarding the incidence of CMVO in STEMI patients according to different reperfusion strategies (PPCI, effective thrombolysis, and rescue PCI) and according to the different modalities of its detection. Finally, we analyzed data in the literature reporting the incidence of CMVO in different clinical subsets (diabetes, chronic kidney disease, women, and latecomers) and different subset of lesions (saphenous vein graft)