Aggressive Youthful Action. The Role of the School in Youth Deviance

In Italy, as in many countries, it is difficult to measure the phenomenon of youthful deviance and associate it with the role of educational institutions in growth and training. It is a silent, hidden, overbearing bond, which is not measurable by the indicators represented in the social, psychological and economic systems and which often hides one or many truths (misunderstandings, personal, family and socio-economic distress, baby crime, gang initiation). We will try to highlight the elements of this link.What can be done to reduce the discomfort of young people that very often results in aggressive behavior towards themselves and towards others

Education and the Determinants of Early School Leaving in Campania

Skills gaps between people and socio-economic groups persist over time and affect the future of generations.Social change sees the relationship between education as a dynamic process, linked to “life long learning” and equity (Lisbon Commision, 2020) and the concept of human capital.The analysis of such a correlation will be the subject of the study to highlight the reasons for early school leaving and the repercussions on the labour market in some disadvantaged territorial units of reference in Campania (Italy).This regional context is characterized by a higher incidence of poverty, poor school performance and a less favourable condition of young people in the labour market.The examination will focus on the northern suburbs of Naples

Gromov-Hausdorff Limits of Closed Surfaces

We completely describe the Gromov-Hausdorff closure of the class of length spaces being homeomorphic to a fixed closed surface.Comment: 20 pages, additional results adde

Factors influencing selling price of performance tested bulls

Lifetime performance and sale records of 688 purebred, Angus, Hereford and Polled Hereford bulls, developed on breeder\u27s farms and consigned to the Tennessee Breeders\u27 Performance Tested Bull Sales during the 5-year period (1966-1971) were utilized in this study. In order to be eligible for these sales a bull had to have minimum requirements with reference to growth rate from birth to weaning, lifetime weight per day of age, type grades at weaning and at the end of the post-weaning test. All bulls were full fed for a period of 98 days. The objective of this study was to ascertain the most important factor or factors influencing the selling price of bulls sold in performance tested sales. A preliminary analyses on a within-year-sale location by breed indicated no apparent difference between breeds for any of the traits studied. In the final analyses, variation in the dependent variable, selling price of the bulls, was considered to be due to variation in seven independent variables. In order to assess the influence of each of the independent variables, after other variables had been considered, the order of incorporation into a regression model was based on the practical sequence of these variables in evaluating performance. This order was; (1) weight off test, (2) average daily gain on full feed, (3) age at the end of test, (4) lifetime weight per day of age, (5) average daily gain from birth to weaning, (6) adjusted average daily gain from birth to weaning, and (7) age at weaning. The seven performance traits explained 60.4 percent of the variation in the selling price of performance tested bulls. Weight off test alone explained 28.6 percent of the variation in the selling price whereas average daily gain on full feed added only 11.0 percent to the explanation of the variation. Grade at weaning had a significant effect (P\u3c.01) on the selling price of performance tested bulls. Bulls grading average fancy at weaning, on the average, sold from $194.44 more than bulls grading low choice. However, when weaning grade alone was included in the model the R2 value was only .024. Although the differences between grade at weaning on selling price was significant very little if any variation was explained. Final type grade had a significant effect (P\u3c.01) on the selling price of performance tested bulls. These data indicate that bulls grading low choice at the end of the test sold for$474.94 less than bulls grading average fancy. When final type grade was included the R2 value was only .168. In Analysis III final type grade was included as a discrete variable with age at the end of the test and lifetime-weight-per-day-of- age as continuous independent variables. Final type grade had a significant effect on the selling price of performance tested bulls. Bulls grading average fancy within the range of these data, sold on the average for $382.43 more than bulls grading low choice. When selling price was regressed on age at the end of the test, these data indicate that on the average for each increase in days of age above the mean. that selling price increased$1.53. Lifetime-weight per day of age was also a significant (P\u3c.01) source of variation. These data indicate that on the average for each unit of increase in lifetime-weight-per-day-of-age that selling price increased $527.94. These findings indicate that those individuals buying Breeders\u27 Performance Tested bulls were concerned with final type grade, age at the end of the test as well as lifetime-weight- per-day-of-age. Final type grade in Analysis IV had a significant (P\u3c.01) effect on the selling price received of performance tested bulls. Weight off test as well as lifetime-weight per day of age when included as a continuous variable had a significant effect (P\u3c.01) on the price received for the sale of performance tested bulls. The R value of .438 indicates the variation that was accounted for by the inclusion of these independent variables. These data indicate that buyers of performance tested bulls were interested in the individual performance data presented in the catalog but tended to let conformation, size, as described by weight, and age influence them in their final decision

Layer-by-layer assembly of organic films and their application to multichannel surface plasmon resonance sensing

This thesis provides a study of a single chip, multi-channel surface plasmon resonance (SPR) imaging system. The equipment has no moving parts and uses a single sensor "chip" onto which multiple channels can be incorporated. A light emitting diode is used as a photon source while a CCD camera forms the detector. The optical configuration has been designed to achieve a uniform illumination of the sample over a fixed area with a range of incident angles. Poly(ethylene imine), PEI, poly(ethylene-co-maleic acid), PMAE, poly(styrene sulfonate), PSS, and a cationic modified polyacrylic ester, PMADAMBQ, are used as the molecular "bricks" in layer-by-layer (LbL) self-assembled organic architectures. Reflectivity changes in real time are used to follow the adsorption steps during the deposition of the multilayer films. Sensing experiments are mainly focused on the first row transition metals such as iron (II), nickel (II), copper (II)and zinc (II). Sensing of anionic sodium dodecylbenzene sulphate, C(_12)H(_25)C(_6)H(_4)SO(_3)Na, and a reversible pH-dependent response for a PEI/PMAE/PMADAMBQ LbL film are also reported. Using a two bilayer structure, PEI/PMAE/PMADAMBQ/PMAE, a detection limit of less of one part per million for copper ions in solution is measured. Atomic force microscopy is used to elucidate the morphology of the organic films. In some cases, the visualization of isolated polymeric chains is demonstrated. It is proved that polyelectrolytes of different charge density form dissimilar structures. The outer surface of PEI/PSS bilayers appears to be more uniform than that of PEI/PMAE bilayers. This is believed to have an influence on the sensing performance of the LbL architectures. The use of the SPR sensing system for simultaneous interrogation of different polyelectrolyte thin films is demonstrated. Two different LbL self-assembled films, PEI/PSS and PEI/PMAE, are built-up on the same chip. Their response to a variety of metal ions is shown to be independent and reasonably reproducible. Moreover, consistent results are obtained when using sensing chips stored for a relatively long time

The Impact of the Present International System on the Non-Aligned Movement

With the thaw of the cold war and the emergence of detente between the superpowers, it was widely argued that the policy of non-alignment had almost lost its relevance. Behind this belief was the assumption that non-alignment was the outcome of the cold war. However, non alignment did not go into oblivion as predicted by the cold war theory. On the contrary, the Movement was able to adapt itself to the new international conditions of the 1970\u27s and to reemerge bigorously as a major political force in the 1980\u27s. The papers published in this volume tackle these questions from various perspectives. The first two, written by two Indian scholars, provide us with a macroscopic viewpoint of the present international system and its impact on the primary orientations of the Non-Aligned Movement. The papers of Dr. Haroub Othman and Dr. Samir Ahmed review the political and organizational evolution of the Movement. Dr. Galal\u27s and Dr. Singh\u27s papers attempt to describe the security challenges of the Non-Aligned Move cent in the 1980\u27 s and the feasibility of formulating a Non-Aligned Security Doctrine. The next two contributions discuss the political economy of non-alignment. Dr. Selim\u27s paper reviews the emergence of the economic paradigm of non-aligned countries -- the evolution of the Movement of Non-Alignment as to form the main economic pressure group for Third World countries during the 1970\u27s and the basic obstacles which arc likely to influence the economic role of the Movement in Dr Bashai discusses the role of the Movement in North-South the negotiations and the fostering of South-South cooperation. In his second contribution to chis volume, Dr. Samir Ahmed discusses the particular nature of Africa\u27s non-alignment and the basic challenges which confront the continent its endeavor to preserve its non-aligned international status. Finally, Dr. Tadic and Dr. Farajallah succinctly tackle the difficult task of attempting co-identify the general global and structural problems which confront the Nonaligned Movement in the 1980\u27s and the prospects for the future.https://fount.aucegypt.edu/faculty_book_chapters/1879/thumbnail.jp

Pituitary body in its relation to the skeleton

The pituitary body in its relation to the skeleton: a review of the literature, with a preliminary report on personal experiments, and notes on experimental surgery.This research is not presented as a completed scientific investigation. It may be worth while, however, to give an account of the objects in view and the methods employed, together with a preliminary communication of the results obtained up to the present time.The object of this research is primarily to further the elucidation of the problems which concern diseases of bones. It is recognized that a thorough knowledge of the physiological conditions which influence bone growth, bone maintenance and bone repair is essential before pathological states are fully comprehensible and their rational treatment possible. The subject of normal bone growth and maintenance has therefore been taken up first; and the investigation resolves itself into an inquiry into the factors which exercise an important influenc on this.Before proceeding to apply the scheme of investigation ... it is necessary to review any previous investigations bearing on the subject. This must include the effects of pituitary disturbances on the other endocrine organs, and the influence of any such disturbance of another organ on bone. The importance of this general review is obvious when we consider the interdependence of the members of the endocrine group, the complex derangements which may thus follow a lesion of any one of them, and the consequent difficulty in interpreting the results of such a lesion. This subject is dealt with in Section I.The available methods of investigation then fall to be considered. In Section II the more general points are set forth; and in Section III the operative methods used are given in detail. The general results of operations and pituitary feeding are dealt with in Section IV. Section V contains summaries of individual experiments; and Section VI gives my own results in relation to bone growth

An economic analysis of the marketing trends of the wholesale nursery industry in Tennessee

Changing marketing trends is a major problem facing nursery wholesalers. Developing markets and maintaining market share is of vital importance to insure short term and long term success. Little research has been conducted on the changing economic and marketing trends of nurseries in Tennessee. The purpose of this study was to gather information on the market structure of the Tennessee nursery industry. A survey questionnaire administered personally by the researcher was used to collect data regarding sales by product category, sales by state, share of sales to the firm\u27s largest trading partners, advertising, and transportation. Ninety randomly selected nurseries from 17 counties were selected from a list of certified nurseries provided by the Tennessee Department of Agriculture. Three nursery classifications were created in terms of acreage in production-small (0-9.9 acres); medium (10.0-99.9 acres); and large (100.0 acres or more). Thirty nurseries comprised each classification. In addition to the preceding classifications, nurseries are also divided into six groups according to annual sales - less than $10,000;$10,000-$49,999;$50,000-$99,999;$100,000- $499,999;$500,000-$999,999; and more than$1,000,000

Numbers and Activity of Nitrogen-Fixing Bacteria Associated with Spring Wheat

Much of the food production in the world today depends on the presence of an adequate supply of nitrogen in the soil. Whether farming methods are simple or intense, nitrogen in usually the primary limiting factor in this production. In order to relieve this limitation, much of the world\u27s agriculture has turned to the commercial manufacture and application of nitrogen fertilizers to increase crop output and to bring new lands into production. The manufacture of nitrogen fertilizer is an energy intensive process requiring large amounts of petroleum. The increasing price of fossil fuels is then passed on in the form of higher food prices, making it increasingly difficult to meet the growing world-wide demand for food. On a global scale, the Haber-Basch method of producing chemical fertilizer consumes more than 2 million barrels of oil daily. As an alternative to this type of fertilization, the process of nitrogen fixation has come under close study. Significant contributions of nitrogen to crop production have been well documented in the cases of the legume Rhizobium symbioses, and in the contribution of nitrogen to paddy rice by bluegreen bacteria. One aspect of nitrogen fixation that has not been as clearly defined, however, is that of chemoheterotrophic associative nitrogen-fixing bacteria. There have been many encouraging, but also some contradictory reports of plant growth increases caused by bacteria growing in the rhizosphere. Any advancements made in this area could have significant effects on the production of non-legume crops such as corn and wheat. Also, since new discoveries involving nitrogen fixation by root-associated bacteria could potentially be used in nearly any type of farming, it represents an important area of study. This study was conducted with the following objectives: 1) to determine if the roots of spring wheat display a \u27\u27rhizosphere effect on nitrogen-fixing bacteria. 2) to determine if the stage of growth of the plant affected the activity of these bacteria, and 3) to determine the effect of inoculation of known nitrogen-fixing bacterial species onto the wheat plant. That is, do the applied bacteria survive in high numbers in the rhizosphere and do they promote nitrogen increases in the plant