FENOMENA ADIKSI INTERNET DAN MEDIA SOSIAL PADA GENERASI XYZ

The phenomenon of internet and social media addiction has attracted the attention of many people. We have conducted a research to examine whether or not the phenomenon of addiction to the internet and social media is a scientific reality. Then, we follow up this research. About 2014 respondents have been surveyed. Pearson’s Product Moment and Cronbach's Alpha tests were conducted to find out whether or not all the questions on this survey questionnaire were valid and reliable. The Chi Square hypothesis test was put forward Helmert’s theory around 1960; Helmert was a German Mathematical Physicist who mainly studied the field of Geodesy, even though Ernst Abbe and Irenne Jules Bienayme had already discovered this Chi Square distribution. The results of the internet addiction survey showed that 74.68% of respondents were not addicted and the rest were addicted mildly, moderately and severely. For the social media addiction survey, 79.94% of respondents were not addicted and the rest were addicted. Variables affecting addiction are age, occupation, and education. Internet and social media addiction is mostly experienced by Generation Y and Z, while Generation X has less addiction. The results of the measurement of Internet and social media addiction include scientific reality and attention should be paid to it and steps should be taken in the context of prevention and recovery for those who are addicted. Prevention and recovery for those who are addicted can be done by involving three major components: family, community, and state.

Analytic combinatorics and QFT

In this chapter we present how several analytic techniques, often used in combinatorics, appear naturally in various QFT issues. In the first section we show how one can use the Mellin transform technique to re-express Feynman integrals in a useful way for the mathematical physicist. Finally, we briefly present how the saddle point approximation technique can be also used in QFT. The first phrase of Philippe Flajolet and Robert Sedgewick's encyclopaedic book on analytic combinatorics gives the reader a first glimpse of what analytic combinatorics deals. In the following chapter, we present how several analytic techniques, often used in combinatorics,appear naturally in various QFT issues.

Mathematics and Relatedness: Predicting Optimal Social Engagement in Late Life

Multiple causes converge for older adults to shed social relationships. Lost opportunities for social engagement are tied to weakened cognitive reserve and under-optimal aging in health and disease. For example, a woman, 75, regularly strolls with younger friends. At 80, her reduced motor fitness makes it hard to keep pace and she withdraws her participation. With same-age peers, she might continue this healthy physical and social activity a few more years by unobtrusively shortening the outing or by slowing her pace. A man, 85, loves to debate politics with family, but his turn at talks diminish: his hearing loss (sensory) prevents quick grasp of the discussion; his slower verbal fluency (cognitive) hamper quick-witted replies. Both examples illustrate that social aging is not only a ¬¬¬property of the aging individual. Social context plays an important role. Our recently formed interdisciplinary group (geropsychiatric nurse, mathematical physicist and complexity scientist) is studying the systemic complexities of social aging with experiments and mathematical models. Our aim is to present our model and aging-focused hypotheses, as well as empirical validation in younger adults. Four key variables are group size and heterogeneity, and the strength and adaptability of social coordination. Our current results show that people coordinate better with others like them in pace, but they lose the ability to coordinate with people whose pace is different. We anticipate that our program of research will deliver evidence-based recommendations on social-engineering of activities that maximize opportunities for sustained interactions among older adults.

The Robin function and conformal welding – A new proof of the existence

Green’s function of the mixed boundary value problem for harmonic functions is sometimes named the Robin function {R(z,\zeta\/)} after the French mathematical physicist Gustave Robin (1855–1897). The aim of this paper is to provide a new proof of the existence of the Robin function for planar n-fold connected domains using a special version of the well-known Koebe’s uniformization theorem and a conformal mapping which is closely related to the Robin function in the simply connected case.

Le Roy, Édouard Louis Emmanuel Julien (1870–1954)

Le Roy was a French mathematical physicist and Catholic modernist philosopher. Starting from a philosophy of life similar to Henri Bergson’s philosophy of creative evolution, he argued that the capacity for invention was fundamental to human existence. This led him to develop a radical form of conventionalism according to which scientific facts are created rather than discovered. Henri Poincaré attacked this view, arguing that the scientist creates only the language in which facts are expressed.

‘Dirty work’, but someone has to do it: Howard P. Robertson and the refereeing practices of Physical Review in the 1930s

In the 1930s the mathematical physicist Howard P. Robertson was the main referee of the journal Physical Review for papers concerning general relativity and related subjects. The rich correspondence between Robertson and the editors of the journal enables a historical investigation of the refereeing process of Physical Review at the time that it was becoming one of the most influential physics periodicals in the world. By focusing on this case study, the paper investigates two complementary aspects of the evolution of the refereeing process: first, the historical evolution of the refereeing practices in connection with broader contextual changes, and second, the attempts to define the activity of the referee, including the epistemic virtues required and the journal's functions according to the participants' categories. By exploring the tension between Robertson's idealized picture about how the referee should behave and the desire to promote his intellectual agenda, I show that the evaluation criteria that Robertson employed were contextually dependent and I argue that, in the 1930s, through his reports the referee had an enormous power in defining what direction future research should take.