Due to several reasons, when teaching basic physics in other careers, it is usual to find\nbehaviors ranging from a poor interest to a total reject of the course. To our minds,\nsome of these conducts can be avoided, or at least softened, choosing adequate textbooks suitable to circumvent the following negative features, sometimes showing in\nlectures of physics: a) Overriding physics with mathematics. b) Not take into account\nmeasurements, standards and uncertainty. c) The questioning of students who ask,\n¿why do I need physics if I do not want to be a physicist? d) The scarce time available\nwhen compared to the extension of the programs, and: e) the worries of many students\nabout the need of remembering too much concepts and formulas without being able to\ngrasp the meaning of each one. A preliminary version of some basic physics texts including Mechanics, Thermodynamics, Electromagnetism and Optics, written following\nthese criteria, appears with free access in www.geocities.ws/fisica1y2/fisica1/fis1.htm,\nand the same placing 2 instead of 1 in fisica1/fis1.htm.

An earlier study on two Sanyo and Panasonic induction kitchens disclosed that at 30 cm\nof the hob the intensity of the radiation was well below the security standards accepted\nat the time. Only at a distance of 10 cm the intensity was near the maximum allowed,\nand would be harmful only if exposed to for several hours. Yet, the same paper pointed\nout the absence of studies in the specific working range of those kitchens (20-100 kHz).\nEven at present, reports in that range do not appear. The study did not mention the possible effects of low intensity radiation on gens in living cells, a fact reported later in\nseveral studies. A 2014 report of the Washington University counted 114 genetic studies at medium and low intensities and frequencies ranging from 60 Hz to microwave;\n65% of those studies found harmful effects on living cells. The figure increased to 83%\nwhen only the fraction in the low frequency range was considered. Due to the nearness\nof the cooking hob to the abdominal region, these results advise to take notice of possible cumulative effects on the brain tissues of fetuses in pregnant housewives who recurrently use these hobs. Also, the possible effect on ovules and sperm in adults, mainly\nwhile cell meiosis is taking place, should not be disregarded. Recurrent exposure could\ncause a potential increase in the probability of conceiving a viable fetus with genetic\ndefects.

In this paper, we study an kernel estimator of the conditional hazard quantile function of a scalar response variable $Y$ given a random variable (rv) X taking values in a semi-metric space and using the proposed estimator based of the kernel smoothing method. The almost complete consistency and the asymptotic normality of this estimate are obtained when the sample is an independence sequence.

Wind energy is one of the renewable energy sources which minimize the cost of electricity production. In this paper, a hybrid approach of twin support vector regression and particle swarm optimization (PSO) called PSO-TSVR is presented to forecast wind speed. In order to evaluate the performance of the proposed approach, this paper uses three wind speed data of OpenEI as a case study. The results distinctly show that for this specific datasets, the proposed PSO-TSVR approach has achieved much better forecast performance than the basic TSVR and the genetic algorithm (GA).

Medicinal plants due to existence of bioactive compounds are very important in diseases treatment like cancer, heart problems and oxidative stress. Typha latifolia is traditionally used for the treatment of cancer, heart problems and skin diseases. In the current study Typha latifolia methanolic extracts (TLME) were evaluated for its medicinal value (pharmacological evolution) both in invivo and invitro. Dried leaves of the plant were ground and methanolic extracts were prepared. The results revealed that TLME possess significant (P< 0.01) antioxidant and protective effects against lead nitrate induced toxicity in different tissues comprises heart, liver and kidney due to the presence of bioactive compounds.

The study of witchcraft in Africa is hampered by methodological problems which are the result of the use of the Eurocentric materialistic belittling paradigm. To avoid this pitfall, our paper offered a new methodological approach which relies on: (1) The scientificity of the African indigenous epistemology and its superiority to the Eurocentric view. This eschews any connotation of superstition as far as African values are concerned.  (2) The distinct existence of the divine, human and demonic initiatory lore in African which corner witchcraft to the demonic trend. (3) Witchcraft can be empirically studied as the reverse of the practice of the divine mystery. This paper recommends the Kôngo religion as the best paradigm in this study, because it is scientific and it enables the scholar to seize the different aspects of the ATR.

Se presenta el argumento de W. T. Stace sobre el realismo señalando no que éste sea falso sino solamente que no hay absolutamente ninguna razón para considerar que sea verdadero y por tanto no tenemos por qué creerlo. Esto se aplica a la discusión de la pregunta: ¿Cómo sabemos que los átomos existen? Haciendo referencia a algunas de las respuestas científicas más importantes conocidas que son en orden cronológico: i) La ley de las proporciones definidas o Ley de Proust, ii) la teoría cinética de los gases, iii) el movimiento Browniano y, iv) imágenes de microscopio de efecto túnel.

Pavement thickness design is rapidly transitioning from empirical methods developed in the 1960’s to a more modern and adaptable Mechanistic Empirical framework. The limitations of the AASHTO empirical design system and frequent extrapolations leading to overly conservative designs are motivating the consideration of the new AASHTO‐approved Mechanistic-Empirical Pavement Design Guide (MEPDG) and Mechanistic-Empirical Design Software. Design and construction of perpetual pavements, using mechanistic principles in combination with endurance limits, have also become a viable option as agencies seek long‐life, high‐performing pavement structures. This study was motivated due to incessant failures and low-performing pavement structures in Nigeria leading to increased rate of accidents. It has focused on comparisons between the Empirical 1993 AASHTO Guide and the Mechanistic-Empirical Pavement Design Guide (M-E PDG) methodology for flexible and rigid pavements. The comparisons were made via a detailed review of available literature. Throughout the report, the implicit assumption is made that the M-E PDG predictions are closer to true values than those from the 1993 AASHTO Guide. With capabilities beyond the usual empirical design methods therefore, recommendation and adoption of the utilization of the MEPDG for pavement development in Nigeria was made for cost effective and structurally adequate pavements that will serve stakeholders for their full design life.