College and Education

Archive for the ‘Science’ Category

Adolescence is a period in the biological, psychological, sexual and social immediately following the beginning with childhood and puberty. Their range of duration varies according to different sources and medical positions, scientific and psychological but generally falls between 11 or 12 years to 19 or 20.

For the World Health Organization, adolescence is the period between 10 and 19 and falls within the period of youth, between 10 and 24 years. Early puberty or adolescence is the first phase typically begins at age 10 in girls and 11 for boys and goes up to 14-15 years. The middle and late adolescence is extended to 19 years. A teenage youth remains full, from 20 to 24 years dren.

Some psychologists believe that adolescence covers up to 21 years and some authors have extended recent studies from adolescence to age 25

Definition The World Health Organization (WHO) estimates that one in five people in the world is young, 85 percent of them live in poor or middle income, and about 1.7 million of them die annually. [5] The WHO defines adolescence as the period ranging between 10 or 11 years to 19 years, and considers two phases: early adolescence, the 10 or 11 to 14 or 15 years, and late adolescence, 15 to 19 years. [6] However, the condition of youth is not uniform and varies by social group to be eligible. Read the rest of this entry »

Syllogisms

It is a figure of deductive thinking which contains two premises (the major and minor) or Judgments inferred conclusion.

Classification of trials or Premises

A = Affirmative Universal .- Includes all items. Every human dies.

Universal Negative E = .- rejects all elements. No human is vegetable.

I = Individual Affirmative .- Includes some elements. Some humans have twins.

O = .- Not Particular Negative include some elements. Some animals are carnivores.

Two basic characteristics of the syllogisms are:

Truth = that what is said or preached is true.

Validity = probable syllogisms That match the three figures or models exactly unchanged. Read the rest of this entry »

Time, what can we understand how long?, We live in a world governed by this parameter and really nobody has been able to establish a satisfactory explanation of what it means. We say that time is something that passes between an event and another, we can say that time is what clocks measure, the fourth dimension of space-time, etc.

All answers are equally correct, describe the effect but not really explain what this thing called time. In the end we can be that is what we need always to do the things we want.

Many authors, philosophers, scientists, religious … have written on this subject and there are multicolored explanations from those who bet on the non-existence of time as he considers that time is eternal. Try, between the written and the views, shed some light and we see what questions come up.

Before seeking an explanation of the concept directly, which as I said no one has clearly, we can look at their property, what comes to mind when we mention the word time, and from there try to make our humble idea of ​​what can be. And as I read somewhere it is better to be incomprehensible or simplify something. The idea is to write for physical, rather it would be desirable to be understandable by people completely outside the realm of physics. Read the rest of this entry »

There is still no agreement on the age of the universe, yet passionate look into this, because it is something that concerns us, as we walk in it

Wikipedia gives us, the age of the universe, according to the theory of Big Bang is the time elapsed since the Big Bang to the present. The consensus of contemporary scientists is about 13,600,000,000 years (thirteen million in 1600)

The age of the Universe can be determined by measuring the Hubble constant today and extrapolating back in time with the observed values ​​of the parameters of density (O). Before the discovery of dark energy, it was believed that the universe was so dominant in O in this figure corresponds to Ωm. Note that the acceleration of the Universe’s expansion was the longest era, while the Big Crunch of the universe was young age.

It adds that the problem of determining the age of the universe is closer to the problem of determining the values ​​of the cosmological parameters. Today this is largely overcome in the context of the ΛCDM model, which assumes that the universe contains ordinary matter (baryonic) cold dark matter, radiation (protons and neutrinos) and a cosmological constant. The fractional contribution of each energy density of the universe today is given by the density parameter Ωm, and ΩΛ Ωr. ΛCDM The complete model is described by other parameters, but for the purpose of calculating the age of the universe, these three, along with the Hubble constant H0 are the most important Read the rest of this entry »

Young, newly graduated with high English proficiency and ease in some other foreign language, with some work experience, entrepreneurial, dynamic, restless, eager to learn and work and also with full availability.

It seems the overall profile presented by young people starting their career in the labor market, but … is there anything I can do them different from each other? What is that little nuance that makes a chief of staff can be decided in some cases, one candidate in particular?

The answer may lie in the postgraduate courses, Masters or training courses. We talked about the most common means that new graduates or those looking to enhance their professional value, used as a vehicle to achieve the desired specialization, many times, does not guarantee a college education.

Any person who is committed to making a master or a postgraduate course, knows that this is a long term investment and that its benefits will impact on their resume and their job prospects.

The demand for such services is increasing. Infoempleo According to reports, the number of graduate programs has been increasing by about 15% each year. Read the rest of this entry »

Contemporary life has become increasingly complex and problematic, which is why most people must face constant challenges, perceptible and imperceptible threats and deal with unusual situations. Substantive capacity to determine its mode of operation is intelligence, understood as the tool to intellection, detect, and plan actions to realize consistent. Classically, this ability is understood as the intellectual power, the collection of information flow and a good imagination to interpret reality and plan consistent solutions. In a very general could penarse a good formal education provides these elements and thus the person would be prepared to successfully in life. In somewhat more specific terms can be assumed that the case would be the prototype of the professional university, who with the kind of education and had agreed to such a degree of training that can make for your personal development, social and emotional development. While all this is true, the demands of life in recent times has shown that it is absolutely true. In other words, it takes more than a good formal education and the possession of one kind of intelligence is understood in ordinary terms.

Then immediately the question arises, what is more? Among the most characteristic responses that have been given is that which speaks of “other types of intelligence.” In this context, have introduced the concepts of multiple intelligences (1), emotional intelligence (2), practical intelligence (3) and spiritual intelligence (4). Basically, the thrust that propels these alternatives is to rescue all dimensions and capacities of human beings seen that intellectual ability alone is not sufficient to achieve satisfactory performance vital And what are those other existential dimensions and carrying capacities? It may be mentioned by way of illustrative examples, the communication capacity, maturity, imagination, creative, intuitive perception, relational warmth and spontaneous generosity, among others. Read the rest of this entry »

The complexity of studying this phenomenon has attracted various sciences to contradict and deepen this phenomenon originated when, if ever existed or is the final stage of capitalism in which we live, or has always had its existence.

Globalization connotes not always correct because it is linked with the economic and social impact is also, technological and cultural.
But let’s go back to the past and old, whether cultural globalization had its origins as 5000 years BC when the Jewish people tried to invade and conquer new lands or countries to impose their religion and culture, so we could say then from that moment we were in the presence of a globalization that began to start and grow.

We move forward in our analysis, how many countries there who speak the same language? That is also due to cultural globalization that influenced those countries in the languages ​​spoken in common. Let’s also great conquerors like Christopher Columbus who discovered America beyond existing theories he never knew he had done, and what technology has always existed? Of course, if we can make the big wars that took to Troy with large ships did not have the people who were to be conquered, Alexander the Great, until the industrial revolution that was the big step towards a modern future.
We can then define what is technology because it sounds today to something that only relates to the Internet, digital, concept that is completely wrong. Read the rest of this entry »

The word hydroponics is derived from the Greek words Hydro (water) and Ponos (labor or work) and literally means “working water.” Hydroponics is the science of crops without soil.
Although hydroponics is, in practice, synonymous with “farming without land,” this does not necessarily mean that plants grow in water or hanging in the air or water baths as is the case of aeroponics. There are various ways of hydroponics, some of which make use of solid substrates that are NOT GROUND, such as coconut shell, rice husk, washed river sand, perlite, rock wool, etc.. In these substrates plants may be adequate support to grow and offer the ability to hold moisture and promote oxygenation of the roots of plants.
Land is a classic substrate for growing. Provides support, maintains moisture and has own soil nutrients which make the crop. On the ground, however, the flow of oxygen is not good and can transmit bacterial and viral diseases that occur in addition to factors such as pollution of soil and groundwater.
These problems do not occur with hydroponics, because the substrate used in hydroponics only offers the support and the ability to hold moisture and oxygen to the roots of plants. It brings nutrients and is easily controlled that is free from contamination and pests and diseases. The nutrients in the water (HYDRO) is used as a nutrient solution of hydroponics. And that is where the true art of the technique, to have adequate nutrient solutions for each crop at different stages, from the nursery (seed), through germination, bud, growth, flowering, pollination, fruit production and harvesting. Read the rest of this entry »

On many occasions, as has been felt throughout the history of humanity are woven high hopes and expectations with the beginning of a new millennium and the beginning of this century is no exception. The second half of the twentieth century, with its load of questions of positive science, said the gestation of a change in thinking, that although it was slow and went unnoticed at first, experienced more rapidly toward its end, which was seeping into the structures secular modernist thought – in the same way as the revival of medieval thought pierced – making shaken to its foundations. There is a new way of thinking, considering the man and his society, if you want more subjective, more chaotic and complex, where the individual seeks, with some desperation, liberty with equality.

This way of thinking or way of seeing and trying to understand the subject has been called postmodernism, which has been considered by different thinkers who interpret, Gradowska (2004), as “a disaster of our culture …” (p.15) . This is not the idea present in the research is considered as a re-think the postmodern man in this new century and a challenge from its epistemological foundations of existing science. Perez rightly so Lindo (1996), quoted in Gradowska (op.cit), when it states that “change the world is not a crisis or a series of crises. We can understand it better as a mutation, or a change in the very essence of civilization “(p.149). Read the rest of this entry »